| /* |
| * Atmel maXTouch Touchscreen driver |
| * |
| * Copyright (C) 2010 Samsung Electronics Co.Ltd |
| * Copyright (C) 2011-2012 Atmel Corporation |
| * Copyright (C) 2012 Google, Inc. |
| * |
| * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| */ |
| #define pr_fmt(fmt) "atmel_mxt_ts_mmi: %s: " fmt, __func__ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/completion.h> |
| #include <linux/delay.h> |
| #include <linux/firmware.h> |
| #include <linux/i2c.h> |
| #include <linux/i2c/atmel_mxt_ts_mmi.h> |
| #include <linux/input/mt.h> |
| #include <linux/interrupt.h> |
| #include <linux/slab.h> |
| #include <linux/regulator/consumer.h> |
| #include <linux/gpio.h> |
| #include <linux/pinctrl/consumer.h> |
| #include <linux/semaphore.h> |
| #include <linux/atomic.h> |
| |
| enum { |
| STATE_UNKNOWN, |
| STATE_ACTIVE, |
| STATE_SUSPEND, |
| STATE_STANDBY = 4, |
| STATE_BL, |
| STATE_INIT, |
| STATE_FLASH, |
| STATE_QUERY, |
| STATE_INVALID |
| }; |
| |
| #define STATE_UI (STATE_ACTIVE | STATE_SUSPEND) |
| |
| #ifdef CONFIG_OF |
| #include <linux/of.h> |
| #include <linux/of_gpio.h> |
| #endif |
| |
| #ifdef CONFIG_FB |
| #include <linux/notifier.h> |
| #include <linux/fb.h> |
| #include <linux/workqueue.h> |
| |
| static int fb_notifier_callback(struct notifier_block *self, |
| unsigned long event, void *data); |
| static void mxt_queued_resume(struct work_struct *w); |
| #endif |
| |
| #define DRIVER_NAME "atmel_mxt_ts" |
| #define MXT_MAX_RETRIES 10 |
| #define MXT_MAX_BLOCK_WRITE 256 |
| #define MXT_MAX_BUTTONS 8 |
| #define DEBUG_MSG_MAX 200 |
| |
| /* Configuration file */ |
| #define MXT_CFG_MAGIC "OBP_RAW V1" |
| /* Registers */ |
| #define MXT_OBJECT_START 0x07 |
| #define MXT_OBJECT_SIZE 6 |
| #define MXT_INFO_CHECKSUM_SIZE 3 |
| #define MXT_T37_REVISION 21 |
| |
| /* Object types */ |
| #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
| #define MXT_GEN_MESSAGE_T5 5 |
| #define MXT_GEN_COMMAND_T6 6 |
| #define MXT_GEN_POWER_T7 7 |
| #define MXT_GEN_ACQUIRE_T8 8 |
| #define MXT_GEN_DATASOURCE_T53 53 |
| #define MXT_TOUCH_MULTI_T9 9 |
| #define MXT_TOUCH_KEYARRAY_T15 15 |
| #define MXT_TOUCH_PROXIMITY_T23 23 |
| #define MXT_TOUCH_PROXKEY_T52 52 |
| #define MXT_PROCI_GRIPFACE_T20 20 |
| #define MXT_PROCG_NOISE_T22 22 |
| #define MXT_PROCI_ONETOUCH_T24 24 |
| #define MXT_PROCI_TWOTOUCH_T27 27 |
| #define MXT_PROCI_GRIP_T40 40 |
| #define MXT_PROCI_PALM_T41 41 |
| #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 |
| #define MXT_PROCI_STYLUS_T47 47 |
| #define MXT_PROCG_NOISESUPPRESSION_T48 48 |
| #define MXT_SPT_COMMSCONFIG_T18 18 |
| #define MXT_SPT_GPIOPWM_T19 19 |
| #define MXT_SPT_SELFTEST_T25 25 |
| #define MXT_SPT_CTECONFIG_T28 28 |
| #define MXT_SPT_USERDATA_T38 38 |
| #define MXT_SPT_DIGITIZER_T43 43 |
| #define MXT_SPT_MESSAGECOUNT_T44 44 |
| #define MXT_SPT_CTECONFIG_T46 46 |
| #define MXT_PROCI_ACTIVE_STYLUS_T63 63 |
| #define MXT_PROCI_LENSEBENDING_T65 65 |
| #define MXT_PROCG_NOISESUPPRESSION_T72 72 |
| #define MXT_PROCI_TOUCHSEQUENCELOGGER_T93 93 |
| #define MXT_TOUCH_MULTITOUCHSCREEN_T100 100 |
| |
| /* MXT_GEN_MESSAGE_T5 object */ |
| #define MXT_RPTID_NOMSG 0xff |
| |
| /* MXT_GEN_COMMAND_T6 field */ |
| #define MXT_COMMAND_RESET 0 |
| #define MXT_COMMAND_BACKUPNV 1 |
| #define MXT_COMMAND_CALIBRATE 2 |
| #define MXT_COMMAND_REPORTALL 3 |
| #define MXT_COMMAND_DIAGNOSTIC 5 |
| |
| /* Define for T6 status byte */ |
| #define MXT_T6_STATUS_RESET (1 << 7) |
| #define MXT_T6_STATUS_OFL (1 << 6) |
| #define MXT_T6_STATUS_SIGERR (1 << 5) |
| #define MXT_T6_STATUS_CAL (1 << 4) |
| #define MXT_T6_STATUS_CFGERR (1 << 3) |
| #define MXT_T6_STATUS_COMSERR (1 << 2) |
| |
| /* MXT_GEN_POWER_T7 field */ |
| struct t7_config { |
| u8 idle; |
| u8 active; |
| u8 actv2idle; |
| } __packed; |
| |
| #define MXT_POWER_CFG_RUN 0 |
| #define MXT_POWER_CFG_DEEPSLEEP 1 |
| |
| /* MXT_TOUCH_MULTI_T9 field */ |
| #define MXT_T9_ORIENT 9 |
| #define MXT_T9_RANGE 18 |
| |
| /* MXT_TOUCH_MULTI_T9 status */ |
| #define MXT_T9_UNGRIP (1 << 0) |
| #define MXT_T9_SUPPRESS (1 << 1) |
| #define MXT_T9_AMP (1 << 2) |
| #define MXT_T9_VECTOR (1 << 3) |
| #define MXT_T9_MOVE (1 << 4) |
| #define MXT_T9_RELEASE (1 << 5) |
| #define MXT_T9_PRESS (1 << 6) |
| #define MXT_T9_DETECT (1 << 7) |
| |
| struct t9_range { |
| u16 x; |
| u16 y; |
| } __packed; |
| |
| /* MXT_TOUCH_MULTI_T9 orient */ |
| #define MXT_T9_ORIENT_SWITCH (1 << 0) |
| |
| /* MXT_SPT_COMMSCONFIG_T18 */ |
| #define MXT_COMMS_CTRL 0 |
| #define MXT_COMMS_CMD 1 |
| #define MXT_COMMS_RETRIGEN (1 << 6) |
| |
| /* Define for MXT_GEN_COMMAND_T6 */ |
| #define MXT_BOOT_VALUE 0xa5 |
| #define MXT_RESET_VALUE 0x01 |
| #define MXT_BACKUP_VALUE 0x55 |
| #define MXT_IDENT_VALUE 0x80 |
| |
| /* Define for MXT_PROCI_TOUCHSUPPRESSION_T42 */ |
| #define MXT_T42_MSG_TCHSUP (1 << 0) |
| |
| /* T47 Stylus */ |
| #define MXT_TOUCH_MAJOR_T47_STYLUS 1 |
| |
| /* T63 Stylus */ |
| #define MXT_T63_STYLUS_PRESS (1 << 0) |
| #define MXT_T63_STYLUS_RELEASE (1 << 1) |
| #define MXT_T63_STYLUS_MOVE (1 << 2) |
| #define MXT_T63_STYLUS_SUPPRESS (1 << 3) |
| |
| #define MXT_T63_STYLUS_DETECT (1 << 4) |
| #define MXT_T63_STYLUS_TIP (1 << 5) |
| #define MXT_T63_STYLUS_ERASER (1 << 6) |
| #define MXT_T63_STYLUS_BARREL (1 << 7) |
| |
| #define MXT_T63_STYLUS_PRESSURE_MASK 0x3F |
| |
| /* T100 Multiple Touch Touchscreen */ |
| #define MXT_T100_CTRL 0 |
| #define MXT_T100_CFG1 1 |
| #define MXT_T100_TCHAUX 3 |
| #define MXT_T100_NUMTCH 6 |
| #define MXT_T100_XRANGE 13 |
| #define MXT_T100_YRANGE 24 |
| #define MXT_T100_MOVHYSTI 47 |
| #define MXT_T100_MOVHYSTN 49 |
| |
| #define MXT_T100_CFG_SWITCHXY (1 << 5) |
| |
| #define MXT_T100_TCHAUX_VECT (1 << 0) |
| #define MXT_T100_TCHAUX_AMPL (1 << 1) |
| #define MXT_T100_TCHAUX_AREA (1 << 2) |
| |
| #define MXT_T100_DETECT (1 << 7) |
| #define MXT_T100_TYPE_MASK 0x70 |
| #define MXT_T100_TYPE_STYLUS 0x20 |
| |
| /* Delay times */ |
| #define MXT_BACKUP_TIME 50 /* msec */ |
| #define MXT_RESET_TIME 200 /* msec */ |
| #define MXT_RESET_TIMEOUT 3000 /* msec */ |
| #define MXT_CRC_TIMEOUT 2000 /* msec */ |
| #define MXT_FW_RESET_TIME 3500 /* msec */ |
| #define MXT_FW_CHG_TIMEOUT 300 /* msec */ |
| #define MXT_WAKEUP_TIME 25 /* msec */ |
| #define MXT_REGULATOR_DELAY 150 /* msec */ |
| #define MXT_POWERON_DELAY 150 /* msec */ |
| |
| /* Command to unlock bootloader */ |
| #define MXT_UNLOCK_CMD_MSB 0xaa |
| #define MXT_UNLOCK_CMD_LSB 0xdc |
| |
| /* Bootloader mode status */ |
| #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
| #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ |
| #define MXT_FRAME_CRC_CHECK 0x02 |
| #define MXT_FRAME_CRC_FAIL 0x03 |
| #define MXT_FRAME_CRC_PASS 0x04 |
| #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ |
| #define MXT_BOOT_STATUS_MASK 0x3f |
| #define MXT_BOOT_EXTENDED_ID (1 << 5) |
| #define MXT_BOOT_ID_MASK 0x1f |
| |
| /* Touchscreen absolute values */ |
| #define MXT_MAX_AREA 0xff |
| #define MXT_MAX_PRESSURE 0xff |
| |
| #define MXT_PIXELS_PER_MM 20 |
| |
| struct mxt_obj_patch { |
| u8 number; |
| u8 instance; |
| u8 offset; |
| u8 value; |
| struct list_head link; |
| }; |
| |
| struct mxt_patch { |
| const char *name; |
| int cfg_num; |
| struct list_head cfg_head; |
| }; |
| |
| |
| struct mxt_patchset { |
| int patch_num; |
| struct mxt_patch *patch_data; |
| }; |
| |
| struct mxt_object { |
| u8 type; |
| u16 start_address; |
| u8 size_minus_one; |
| u8 instances_minus_one; |
| u8 num_report_ids; |
| } __packed; |
| |
| struct mxt_tdat_section { |
| const unsigned char *data; |
| size_t size; |
| }; |
| |
| #define ACTIVE_IDX 0 |
| #define SUSPEND_IDX 1 |
| #define MAX_NUM_STATES 2 |
| |
| /* Each client has this additional data */ |
| struct mxt_data { |
| struct i2c_client *client; |
| struct input_dev *input_dev; |
| char phys[64]; /* device physical location */ |
| struct mxt_platform_data *pdata; |
| struct mxt_object *object_table; |
| struct mxt_info *info; |
| void *raw_info_block; |
| atomic_t state; |
| unsigned int irq; |
| unsigned int max_x; |
| unsigned int max_y; |
| bool in_bootloader; |
| u16 mem_size; |
| u32 config_id; |
| u32 firmware_id; |
| u8 t100_aux_ampl; |
| u8 t100_aux_area; |
| u8 t100_aux_vect; |
| bool mem_access_created; |
| struct bin_attribute mem_access_attr; |
| bool debug_enabled; |
| bool debug_v2_enabled; |
| u8 *debug_msg_data; |
| |
| u16 debug_msg_count; |
| struct bin_attribute debug_msg_attr; |
| struct mutex debug_msg_lock; |
| u8 revision_id; |
| u8 max_reportid; |
| u32 config_crc; |
| u32 info_crc; |
| u8 bootloader_addr; |
| struct t7_config t7_on_cfg; |
| u8 *msg_buf; |
| u8 t6_status; |
| bool update_input; |
| u8 last_message_count; |
| u8 num_touchids; |
| u8 num_stylusids; |
| unsigned long t15_keystatus; |
| bool use_retrigen_workaround; |
| bool use_regulator; |
| bool poweron; |
| bool input_registered; |
| bool buttons_enabled; |
| |
| bool mode_is_wakeable; |
| bool mode_is_persistent; |
| |
| struct mxt_patchset *default_mode; |
| struct mxt_patchset *alternate_mode; |
| struct mxt_patchset *current_mode; |
| |
| bool irq_enabled; |
| struct regulator *reg_vdd; |
| struct regulator *reg_avdd; |
| char *fw_name; |
| char *cfg_name; |
| u8 *T100_data; |
| |
| /* Cached parameters from object table */ |
| u16 T5_address; |
| u8 T5_msg_size; |
| u8 T6_reportid; |
| u16 T6_address; |
| u16 T7_address; |
| u16 T38_address; |
| u8 T9_reportid_min; |
| u8 T9_reportid_max; |
| u8 T15_reportid_min; |
| u8 T15_reportid_max; |
| u16 T18_address; |
| u8 T19_reportid; |
| u8 T42_reportid_min; |
| u8 T42_reportid_max; |
| u16 T44_address; |
| u8 T48_reportid; |
| u8 T63_reportid_min; |
| u8 T63_reportid_max; |
| u8 T93_reportid; |
| u8 T100_reportid_min; |
| u8 T100_reportid_max; |
| |
| /* for fw update in bootloader */ |
| struct completion bl_completion; |
| |
| /* for reset handling */ |
| struct completion reset_completion; |
| |
| /* for reset handling */ |
| struct completion crc_completion; |
| |
| /* Enable reporting of input events */ |
| bool enable_reporting; |
| |
| /* Indicates whether device is in suspend */ |
| atomic_t suspended; |
| |
| #ifdef CONFIG_FB |
| struct notifier_block fb_notif; |
| struct work_struct resume_work; |
| #endif |
| struct semaphore crit_section_lock; |
| const struct firmware *tdat; |
| struct mxt_tdat_section fw; |
| struct mxt_tdat_section tsett; |
| }; |
| |
| #define mxt_unlock(s) {\ |
| up(s);\ |
| pr_debug("critical section RELEASED (count %d)\n",\ |
| ((struct semaphore *)(s))->count);\ |
| } |
| |
| static void mxt_lock(struct semaphore *sem) |
| { |
| ktime_t after, before; |
| int retval, elapsed_time; |
| |
| retval = down_trylock(sem); |
| if (!retval) |
| goto done; |
| /* will have to wait */ |
| before = ktime_get(); |
| retval = down_interruptible(sem); |
| if (retval) { |
| pr_err("cannot lock critical section\n"); |
| return; |
| } |
| after = ktime_get(); |
| elapsed_time = (ktime_to_timeval(after).tv_sec - |
| ktime_to_timeval(before).tv_sec) * 1000; |
| elapsed_time += (ktime_to_timeval(after).tv_usec - |
| ktime_to_timeval(before).tv_usec) / 1000; |
| pr_info("lock delayed by %d ms\n", elapsed_time); |
| done: |
| pr_debug("critical section LOCKED (count %d)\n", sem->count); |
| } |
| |
| |
| static int mxt_suspend(struct device *dev); |
| static int mxt_resume(struct device *dev); |
| static int mxt_get_sensor_state(struct mxt_data *data); |
| static int mxt_init_t7_power_cfg(struct mxt_data *data); |
| static void mxt_regulator_disable(struct mxt_data *data); |
| static void mxt_regulator_enable(struct mxt_data *data); |
| static void mxt_reset_slots(struct mxt_data *data); |
| |
| struct debug_section { |
| unsigned long j; |
| unsigned int count; |
| }; |
| |
| static struct debug_section mxt_proc_t100_dbg; |
| static struct debug_section mxt_dump_message_dbg; |
| |
| /* Function: throttle_dbgout |
| * Print no more than n messages in msec interval |
| * Return |
| * - false if printing is allowed |
| * - true if printing is NOT allowed |
| */ |
| bool throttle_dbgout(struct debug_section *dbg, int n, unsigned int msec) |
| { |
| if (printk_timed_ratelimit(&dbg->j, msec)) |
| dbg->count = 0; |
| |
| if (dbg->count < n) { |
| ++dbg->count; |
| return false; |
| } else |
| return true; |
| } |
| |
| struct touch_up_down { |
| int mismatch; |
| u8 up_down; |
| unsigned int counter; |
| }; |
| |
| struct touch_area_stats { |
| struct touch_up_down *ud; |
| ssize_t ud_len; |
| ssize_t ud_id; |
| ssize_t unknown_counter; |
| const char *name; |
| }; |
| |
| static struct touch_up_down display_ud[20]; |
| static struct touch_area_stats display_ud_stats = { |
| .ud = display_ud, |
| .ud_len = ARRAY_SIZE(display_ud), |
| .name = "ts" |
| }; |
| |
| static struct touch_up_down button_ud[10]; |
| static struct touch_area_stats button_ud_stats = { |
| .ud = button_ud, |
| .ud_len = ARRAY_SIZE(button_ud), |
| .name = "btn" |
| }; |
| |
| static void ud_set_id(struct touch_area_stats *tas, int id) |
| { |
| tas->ud_id = id; |
| } |
| |
| static void ud_log_status(struct touch_area_stats *tas, bool down) |
| { |
| struct touch_up_down *ud = tas->ud; |
| ssize_t id = tas->ud_id; |
| |
| if (id >= tas->ud_len) |
| tas->unknown_counter++; |
| |
| if (!down) { /* up */ |
| if (ud[id].up_down == 0x10) { |
| pr_debug("%s UP[%d]\n", tas->name, id); |
| ud[id].up_down |= 1; |
| ud[id].mismatch--; |
| } |
| } else if (down) { /* down */ |
| if (ud[id].up_down == 0) { |
| ud[id].up_down |= (1 << 4); |
| pr_debug("%s DOWN[%d]\n", tas->name, id); |
| ud[id].mismatch++; |
| } else if (ud[id].up_down == 0x10) |
| return; |
| } |
| |
| if (ud[id].up_down == 0x11) { |
| pr_debug("%s CLEAR[%d]\n", tas->name, id); |
| ud[id].up_down = 0; |
| ud[id].counter++; |
| } |
| } |
| |
| static void TSI_state(struct input_dev *dev, unsigned int tool, bool status) |
| { |
| ud_log_status(&display_ud_stats, status); |
| input_mt_report_slot_state(dev, tool, status); |
| } |
| |
| static void TSI_id(struct input_dev *dev, int id) |
| { |
| ud_set_id(&display_ud_stats, id); |
| input_mt_slot(dev, id); |
| } |
| |
| #define input_mt_report_slot_state TSI_state |
| #define input_mt_slot TSI_id |
| |
| static ssize_t mxt_ud_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| int i; |
| struct mxt_data *data = dev_get_drvdata(dev); |
| ssize_t total = 0; |
| total += scnprintf(buf + total, PAGE_SIZE - total, "display:\n"); |
| for (i = 0; i < display_ud_stats.ud_len; i++) |
| total += scnprintf(buf + total, PAGE_SIZE - total, |
| "[%d]: full cycles-%u, mismatch-%d\n", i, |
| display_ud[i].counter, |
| display_ud[i].mismatch); |
| |
| if (data->buttons_enabled) { |
| total += scnprintf(buf + total, PAGE_SIZE - total, |
| "buttons:\n"); |
| for (i = 0; i < button_ud_stats.ud_len; i++) |
| total += scnprintf(buf + total, PAGE_SIZE - total, |
| "[%d]: full cycles-%u, mismatch-%d\n", |
| i, |
| button_ud[i].counter, |
| button_ud[i].mismatch); |
| } |
| return total; |
| } |
| |
| static ssize_t mxt_ud_stat(char *buf, ssize_t size) |
| { |
| int i; |
| ssize_t total = 0; |
| total += scnprintf(buf + total, size - total, "screen: "); |
| for (i = 0; i < display_ud_stats.ud_len; i++) |
| if (display_ud[i].mismatch) |
| total += scnprintf(buf + total, size - total, |
| "%d)%u,%d ", i, |
| display_ud[i].counter, |
| display_ud[i].mismatch); |
| else if (display_ud[i].counter) |
| total += scnprintf(buf + total, size - total, |
| "%d)%u ", i, |
| display_ud[i].counter); |
| |
| total += scnprintf(buf + total, size - total, "buttons: "); |
| for (i = 0; i < button_ud_stats.ud_len; i++) |
| if (button_ud[i].mismatch) |
| total += scnprintf(buf + total, size - total, |
| "%d)%u,%d ", i, |
| button_ud[i].counter, |
| button_ud[i].mismatch); |
| else if (button_ud[i].counter) |
| total += scnprintf(buf + total, size - total, |
| "%d)%u ", i, |
| button_ud[i].counter); |
| |
| return total; |
| } |
| |
| static char *mxt_find_patch(char *head, char *delimiters, char **next) |
| { |
| char *patch = head; |
| |
| for (; patch; patch = *next) { |
| *next = strpbrk(patch, delimiters); |
| if (*next) |
| *(*next)++ = '\0'; |
| |
| patch = skip_spaces(patch); |
| if (!patch || !*patch || *patch == '#') |
| continue; |
| else |
| break; |
| } |
| |
| return patch; |
| } |
| |
| static int mxt_parse_patch(int object, int instance, char *query, |
| struct mxt_patch *patch_ptr) |
| { |
| int i, error; |
| char *next, *value_p, *pair = query; |
| long offset_v, value_v; |
| struct mxt_obj_patch *patch; |
| |
| for (i = 0; pair; pair = next, i++) { |
| pair = mxt_find_patch(pair, ",", &next); |
| |
| value_p = strpbrk(pair, "="); |
| if (!value_p) { |
| pr_err("T%d[%d]: invalid syntax '%s'\n", |
| object, i, pair); |
| continue; |
| } |
| |
| /* make sure string is null terminated */ |
| *value_p = '\0'; |
| |
| error = kstrtol(pair, 10, &offset_v); |
| if (error) { |
| pr_err("T%d[%d]: dec conversion error\n", object, i); |
| continue; |
| } |
| |
| error = kstrtol(++value_p, 16, &value_v); |
| if (error) { |
| pr_err("T%d[%d]: hex conversion error\n", object, i); |
| continue; |
| } |
| |
| /* primitive data validation */ |
| if (object <= 0 || object > 255 || |
| offset_v < 0 || offset_v > 255) { |
| pr_err("T%d[%d]: invalid values\n", object, i); |
| continue; |
| } |
| |
| patch = kzalloc(sizeof(*patch), GFP_KERNEL); |
| if (!patch) { |
| pr_err("failed to alloc mem\n"); |
| return -ENOMEM; |
| } |
| |
| patch->number = (u8)object; |
| patch->instance = (u8)instance; |
| patch->offset = (u8)offset_v; |
| patch->value = (u8)value_v; |
| |
| pr_debug("T%d[%d], instance %d, offset %d, value 0x%02x\n", |
| patch->number, i, |
| patch->instance, patch->offset, patch->value); |
| patch_ptr->cfg_num++; |
| list_add_tail(&patch->link, &patch_ptr->cfg_head); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Special settings can be passed to the driver via kernel cmd line |
| * Example: atmxt="T100@0=1f,1=a0;T72@47=b2;T110-3@26=a" |
| * Where: |
| * T100 - decimal object number |
| * @ - delimits object number and following patch sets |
| * 0=1f - patch set decimal offset and hex value |
| * 110-3 - object number and instance |
| */ |
| static void mxt_parse_setup_string(struct mxt_data *data, |
| const char *patch_ptr, struct mxt_patch *patch) |
| { |
| struct device *dev = &data->client->dev; |
| long number_v, instance_v; |
| char *patch_string; |
| char *config_p, *instance_p, *next, *patch_set; |
| int i, error; |
| |
| patch_string = kstrdup(patch_ptr, GFP_KERNEL); |
| for (i = 0, patch_set = patch_string; patch_set; patch_set = next) { |
| patch_set = mxt_find_patch(patch_set, ";\n", &next); |
| if (!patch_set) |
| break; |
| |
| dev_dbg(dev, "patch set %d: \"%s\"\n", i, patch_set); |
| |
| config_p = strpbrk(patch_set, "@"); |
| |
| if ((*patch_set != 'T' && *patch_set != 't') || !config_p) { |
| dev_err(dev, "invalid syntax '%s'\n", patch_set); |
| continue; |
| } |
| |
| /* strip non digits */ |
| *config_p++ = '\0'; |
| |
| instance_v = 0L; |
| instance_p = strpbrk(patch_set, "-"); |
| if (instance_p) { |
| *instance_p++ = '\0'; |
| error = kstrtol(instance_p, 10, &instance_v); |
| if (error) |
| dev_err(dev, "kstrtol error %d\n", error); |
| } |
| |
| error = kstrtol(++patch_set, 10, &number_v); |
| if (error) { |
| dev_err(dev, "kstrtol error %d\n", error); |
| continue; |
| } |
| |
| error = mxt_parse_patch((int)number_v, (int)instance_v, |
| config_p, patch); |
| if (error < 0) { |
| dev_err(dev, "invalid patch; parse error %d\n", error); |
| continue; |
| } |
| |
| i++; |
| } |
| kfree(patch_string); |
| if (patch->cfg_num) |
| dev_info(dev, "processed %d patch sets for %d objects\n", |
| patch->cfg_num, i); |
| else |
| dev_info(dev, "no valid patch sets found\n"); |
| } |
| |
| static inline size_t mxt_obj_size(const struct mxt_object *obj) |
| { |
| return obj->size_minus_one + 1; |
| } |
| |
| static inline size_t mxt_obj_instances(const struct mxt_object *obj) |
| { |
| return obj->instances_minus_one + 1; |
| } |
| |
| static bool mxt_object_readable(unsigned int type) |
| { |
| switch (type) { |
| case MXT_GEN_POWER_T7: |
| case MXT_GEN_ACQUIRE_T8: |
| case MXT_SPT_SELFTEST_T25: |
| case MXT_SPT_USERDATA_T38: |
| case MXT_SPT_CTECONFIG_T46: |
| case MXT_PROCI_LENSEBENDING_T65: |
| case MXT_PROCG_NOISESUPPRESSION_T72: |
| case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
| return true; |
| case MXT_GEN_DATASOURCE_T53: |
| case MXT_TOUCH_MULTI_T9: |
| case MXT_TOUCH_KEYARRAY_T15: |
| case MXT_TOUCH_PROXIMITY_T23: |
| case MXT_TOUCH_PROXKEY_T52: |
| case MXT_PROCI_GRIPFACE_T20: |
| case MXT_PROCG_NOISE_T22: |
| case MXT_PROCI_ONETOUCH_T24: |
| case MXT_PROCI_TWOTOUCH_T27: |
| case MXT_PROCI_GRIP_T40: |
| case MXT_PROCI_PALM_T41: |
| case MXT_PROCI_TOUCHSUPPRESSION_T42: |
| case MXT_PROCI_STYLUS_T47: |
| case MXT_PROCG_NOISESUPPRESSION_T48: |
| case MXT_SPT_COMMSCONFIG_T18: |
| case MXT_SPT_GPIOPWM_T19: |
| case MXT_SPT_CTECONFIG_T28: |
| case MXT_SPT_DIGITIZER_T43: |
| default: |
| return false; |
| } |
| } |
| |
| static void mxt_dump_message(struct mxt_data *data, u8 *message) |
| { |
| if (!throttle_dbgout(&mxt_dump_message_dbg, 20, 300000)) |
| print_hex_dump_bytes("atmel_mxt_ts_mmi: MXT MSG:", |
| DUMP_PREFIX_NONE, message, data->T5_msg_size); |
| } |
| |
| static void mxt_debug_msg_enable(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| |
| if (data->debug_v2_enabled) |
| return; |
| |
| mutex_lock(&data->debug_msg_lock); |
| |
| data->debug_msg_data = kcalloc(DEBUG_MSG_MAX, |
| data->T5_msg_size, GFP_KERNEL); |
| if (!data->debug_msg_data) { |
| mutex_unlock(&data->debug_msg_lock); |
| dev_err(&data->client->dev, "Failed to allocate buffer\n"); |
| return; |
| } |
| |
| data->debug_v2_enabled = true; |
| mutex_unlock(&data->debug_msg_lock); |
| |
| dev_info(dev, "Enabled message output\n"); |
| } |
| |
| static void mxt_debug_msg_disable(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| |
| if (!data->debug_v2_enabled) |
| return; |
| |
| dev_info(dev, "disabling message output\n"); |
| data->debug_v2_enabled = false; |
| |
| mutex_lock(&data->debug_msg_lock); |
| kfree(data->debug_msg_data); |
| data->debug_msg_data = NULL; |
| data->debug_msg_count = 0; |
| mutex_unlock(&data->debug_msg_lock); |
| dev_info(dev, "Disabled message output\n"); |
| } |
| |
| static void mxt_debug_msg_add(struct mxt_data *data, u8 *msg) |
| { |
| struct device *dev = &data->client->dev; |
| |
| mutex_lock(&data->debug_msg_lock); |
| |
| if (!data->debug_msg_data) { |
| mutex_unlock(&data->debug_msg_lock); |
| dev_err(dev, "No buffer!\n"); |
| return; |
| } |
| |
| if (data->debug_msg_count < DEBUG_MSG_MAX) { |
| memcpy(data->debug_msg_data + |
| data->debug_msg_count * data->T5_msg_size, |
| msg, data->T5_msg_size); |
| data->debug_msg_count++; |
| } else { |
| dev_dbg(dev, "Discarding %u messages\n", data->debug_msg_count); |
| data->debug_msg_count = 0; |
| } |
| |
| mutex_unlock(&data->debug_msg_lock); |
| |
| sysfs_notify(&data->client->dev.kobj, NULL, "debug_notify"); |
| } |
| |
| static ssize_t mxt_debug_msg_write(struct file *filp, struct kobject *kobj, |
| struct bin_attribute *bin_attr, char *buf, loff_t off, |
| size_t count) |
| { |
| return -EIO; |
| } |
| |
| static ssize_t mxt_debug_msg_read(struct file *filp, struct kobject *kobj, |
| struct bin_attribute *bin_attr, char *buf, loff_t off, size_t bytes) |
| { |
| struct device *dev = container_of(kobj, struct device, kobj); |
| struct mxt_data *data = dev_get_drvdata(dev); |
| size_t count, bytes_read; |
| |
| if (!data->debug_msg_data) { |
| dev_err(dev, "No buffer!\n"); |
| return 0; |
| } |
| |
| count = bytes / data->T5_msg_size; |
| |
| if (count > DEBUG_MSG_MAX) |
| count = DEBUG_MSG_MAX; |
| |
| mutex_lock(&data->debug_msg_lock); |
| |
| if (count > data->debug_msg_count) |
| count = data->debug_msg_count; |
| |
| bytes_read = count * data->T5_msg_size; |
| |
| memcpy(buf, data->debug_msg_data, bytes_read); |
| data->debug_msg_count = 0; |
| |
| mutex_unlock(&data->debug_msg_lock); |
| |
| return bytes_read; |
| } |
| |
| static int mxt_debug_msg_init(struct mxt_data *data) |
| { |
| sysfs_bin_attr_init(&data->debug_msg_attr); |
| data->debug_msg_attr.attr.name = "debug_msg"; |
| data->debug_msg_attr.attr.mode = S_IRUGO | S_IWUSR | S_IWGRP; |
| data->debug_msg_attr.read = mxt_debug_msg_read; |
| data->debug_msg_attr.write = mxt_debug_msg_write; |
| data->debug_msg_attr.size = data->T5_msg_size * DEBUG_MSG_MAX; |
| |
| if (sysfs_create_bin_file(&data->client->dev.kobj, |
| &data->debug_msg_attr) < 0) { |
| dev_err(&data->client->dev, "Failed to create %s\n", |
| data->debug_msg_attr.attr.name); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static void mxt_debug_msg_remove(struct mxt_data *data) |
| { |
| if (data->debug_msg_attr.attr.name) { |
| sysfs_remove_bin_file(&data->client->dev.kobj, |
| &data->debug_msg_attr); |
| data->debug_msg_attr.attr.name = NULL; |
| } |
| } |
| |
| static int mxt_wait_for_completion(struct mxt_data *data, |
| struct completion *comp, unsigned int timeout_ms) |
| { |
| struct device *dev = &data->client->dev; |
| unsigned long timeout = msecs_to_jiffies(timeout_ms); |
| long ret; |
| |
| ret = wait_for_completion_interruptible_timeout(comp, timeout); |
| if (ret < 0) { |
| dev_err(dev, "Wait for completion interrupted.\n"); |
| return -EINTR; |
| } else if (ret == 0) { |
| dev_err(dev, "Wait for completion timed out.\n"); |
| return -ETIMEDOUT; |
| } |
| return 0; |
| } |
| |
| static int mxt_bootloader_read(struct mxt_data *data, |
| u8 *val, unsigned int count) |
| { |
| int ret; |
| struct i2c_msg msg; |
| |
| msg.addr = data->bootloader_addr; |
| msg.flags = data->client->flags & I2C_M_TEN; |
| msg.flags |= I2C_M_RD; |
| msg.len = count; |
| msg.buf = val; |
| |
| ret = i2c_transfer(data->client->adapter, &msg, 1); |
| |
| if (ret == 1) { |
| ret = 0; |
| } else { |
| ret = (ret < 0) ? ret : -EIO; |
| dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", |
| __func__, ret); |
| } |
| |
| return ret; |
| } |
| |
| static int mxt_bootloader_write(struct mxt_data *data, |
| const u8 * const val, unsigned int count) |
| { |
| int ret; |
| struct i2c_msg msg; |
| |
| msg.addr = data->bootloader_addr; |
| msg.flags = data->client->flags & I2C_M_TEN; |
| msg.len = count; |
| msg.buf = (u8 *)val; |
| |
| ret = i2c_transfer(data->client->adapter, &msg, 1); |
| if (ret == 1) { |
| ret = 0; |
| } else { |
| ret = (ret < 0) ? ret : -EIO; |
| dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", |
| __func__, ret); |
| } |
| |
| return ret; |
| } |
| |
| static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry) |
| { |
| u8 appmode = data->client->addr; |
| u8 bootloader; |
| u8 family_id = 0; |
| |
| if (data->info) |
| family_id = data->info->family_id; |
| else |
| family_id = data->pdata->dt_info.family_id; |
| |
| switch (appmode) { |
| case 0x4a: |
| case 0x4b: |
| /* Chips after 1664S use different scheme */ |
| if (retry || family_id >= 0xa2) { |
| bootloader = appmode - 0x24; |
| break; |
| } |
| /* Fall through for normal case */ |
| case 0x4c: |
| case 0x4d: |
| case 0x5a: |
| case 0x5b: |
| bootloader = appmode - 0x26; |
| break; |
| default: |
| dev_err(&data->client->dev, |
| "Appmode i2c address 0x%02x not found\n", |
| appmode); |
| return -EINVAL; |
| } |
| |
| data->bootloader_addr = bootloader; |
| dev_dbg(&data->client->dev, "Bootloader address set to %x\n", |
| data->bootloader_addr); |
| |
| return 0; |
| } |
| |
| static int mxt_probe_bootloader(struct mxt_data *data, bool retry) |
| { |
| struct device *dev = &data->client->dev; |
| int ret; |
| u8 val; |
| bool crc_failure; |
| |
| ret = mxt_lookup_bootloader_address(data, retry); |
| if (ret) |
| return ret; |
| |
| ret = mxt_bootloader_read(data, &val, 1); |
| if (ret) |
| return ret; |
| |
| /* Check app crc fail mode */ |
| crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL; |
| |
| dev_err(dev, "Detected bootloader, status:%02X%s\n", |
| val, crc_failure ? ", APP_CRC_FAIL" : ""); |
| |
| return 0; |
| } |
| |
| static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) |
| { |
| struct device *dev = &data->client->dev; |
| u8 buf[3]; |
| |
| if (val & MXT_BOOT_EXTENDED_ID) { |
| if (mxt_bootloader_read(data, &buf[0], 3) != 0) { |
| dev_err(dev, "%s: i2c failure\n", __func__); |
| return -EIO; |
| } |
| |
| dev_info(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); |
| |
| return buf[0]; |
| } else { |
| dev_info(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); |
| |
| return val; |
| } |
| } |
| |
| static int mxt_check_bootloader(struct mxt_data *data, unsigned int state, |
| bool wait) |
| { |
| struct device *dev = &data->client->dev; |
| u8 val; |
| int ret; |
| |
| recheck: |
| if (wait) { |
| /* |
| * In application update mode, the interrupt |
| * line signals state transitions. We must wait for the |
| * CHG assertion before reading the status byte. |
| * Once the status byte has been read, the line is deasserted. |
| */ |
| ret = mxt_wait_for_completion(data, &data->bl_completion, |
| MXT_FW_CHG_TIMEOUT); |
| if (ret) { |
| /* |
| * TODO: handle -EINTR better by terminating fw update |
| * process before returning to userspace by writing |
| * length 0x000 to device (if we are in |
| * WAITING_FRAME_DATA state). |
| */ |
| dev_err(dev, "Update wait error %d\n", ret); |
| return ret; |
| } |
| } |
| |
| ret = mxt_bootloader_read(data, &val, 1); |
| if (ret) |
| return ret; |
| |
| if (state == MXT_WAITING_BOOTLOAD_CMD) |
| val = mxt_get_bootloader_version(data, val); |
| |
| switch (state) { |
| case MXT_WAITING_BOOTLOAD_CMD: |
| case MXT_WAITING_FRAME_DATA: |
| case MXT_APP_CRC_FAIL: |
| val &= ~MXT_BOOT_STATUS_MASK; |
| break; |
| case MXT_FRAME_CRC_PASS: |
| if (val == MXT_FRAME_CRC_CHECK) { |
| goto recheck; |
| } else if (val == MXT_FRAME_CRC_FAIL) { |
| dev_err(dev, "Bootloader CRC fail\n"); |
| return -EINVAL; |
| } |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| if (val != state) { |
| dev_err(dev, "Invalid bootloader state %02X != %02X\n", |
| val, state); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock) |
| { |
| int ret; |
| u8 buf[2]; |
| |
| if (unlock) { |
| buf[0] = MXT_UNLOCK_CMD_LSB; |
| buf[1] = MXT_UNLOCK_CMD_MSB; |
| } else { |
| buf[0] = 0x01; |
| buf[1] = 0x01; |
| } |
| |
| ret = mxt_bootloader_write(data, buf, 2); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int __mxt_read_reg(struct i2c_client *client, |
| u16 reg, u16 len, void *val) |
| { |
| struct i2c_msg xfer[2]; |
| u8 buf[2]; |
| int ret; |
| int retry = MXT_MAX_RETRIES; |
| |
| buf[0] = reg & 0xff; |
| buf[1] = (reg >> 8) & 0xff; |
| |
| /* Write register */ |
| xfer[0].addr = client->addr; |
| xfer[0].flags = 0; |
| xfer[0].len = 2; |
| xfer[0].buf = buf; |
| |
| /* Read data */ |
| xfer[1].addr = client->addr; |
| xfer[1].flags = I2C_M_RD; |
| xfer[1].len = len; |
| xfer[1].buf = val; |
| |
| retry_read: |
| ret = i2c_transfer(client->adapter, xfer, ARRAY_SIZE(xfer)); |
| if (ret != ARRAY_SIZE(xfer)) { |
| if (--retry) { |
| dev_dbg(&client->dev, "%s: i2c retry %d\n", |
| __func__, MXT_MAX_RETRIES - retry); |
| msleep(MXT_WAKEUP_TIME); |
| goto retry_read; |
| } else { |
| dev_err(&client->dev, "%s: i2c read @%d failed (%d)\n", |
| __func__, reg, ret); |
| return -EIO; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
| const void *val) |
| { |
| u8 *buf; |
| size_t count; |
| int ret; |
| int retry = MXT_MAX_RETRIES; |
| |
| count = len + 2; |
| buf = kmalloc(count, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| buf[0] = reg & 0xff; |
| buf[1] = (reg >> 8) & 0xff; |
| memcpy(&buf[2], val, len); |
| |
| retry_write: |
| ret = i2c_master_send(client, buf, count); |
| if (ret != count) { |
| if (--retry) { |
| dev_dbg(&client->dev, "%s: i2c retry %d\n", |
| __func__, MXT_MAX_RETRIES - retry); |
| msleep(MXT_WAKEUP_TIME); |
| goto retry_write; |
| } else { |
| dev_err(&client->dev, "%s: i2c write @%d failed (%d)\n", |
| __func__, reg, ret); |
| ret = -EIO; |
| } |
| } else { |
| ret = 0; |
| } |
| |
| kfree(buf); |
| return ret; |
| } |
| |
| static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
| { |
| return __mxt_write_reg(client, reg, 1, &val); |
| } |
| |
| static struct mxt_object *mxt_get_object(struct mxt_data *data, u8 type) |
| { |
| struct mxt_object *object; |
| int i; |
| |
| for (i = 0; i < data->info->object_num; i++) { |
| object = data->object_table + i; |
| if (object->type == type) |
| return object; |
| } |
| |
| dev_warn(&data->client->dev, "Invalid object type T%u\n", type); |
| return NULL; |
| } |
| |
| static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) |
| { |
| struct device *dev = &data->client->dev; |
| u8 status = msg[1]; |
| u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16); |
| |
| if (crc != data->config_crc) { |
| data->config_crc = crc; |
| dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc); |
| complete(&data->crc_completion); |
| } |
| |
| /* Detect transition out of reset */ |
| if ((data->t6_status & MXT_T6_STATUS_RESET) && |
| !(status & MXT_T6_STATUS_RESET)) |
| complete(&data->reset_completion); |
| |
| /* Output debug if status has changed */ |
| if (status != data->t6_status) |
| dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n", |
| status, |
| (status == 0) ? " OK" : "", |
| (status & MXT_T6_STATUS_RESET) ? " RESET" : "", |
| (status & MXT_T6_STATUS_OFL) ? " OFL" : "", |
| (status & MXT_T6_STATUS_SIGERR) ? " SIGERR" : "", |
| (status & MXT_T6_STATUS_CAL) ? " CAL" : "", |
| (status & MXT_T6_STATUS_CFGERR) ? " CFGERR" : "", |
| (status & MXT_T6_STATUS_COMSERR) ? " COMSERR" : ""); |
| |
| /* Save current status */ |
| data->t6_status = status; |
| } |
| |
| static void mxt_input_button(struct mxt_data *data, u8 *message) |
| { |
| struct input_dev *input = data->input_dev; |
| const struct mxt_platform_data *pdata = data->pdata; |
| bool button; |
| int i; |
| |
| /* do not report events if input device not yet registered */ |
| if (!data->enable_reporting) |
| return; |
| |
| /* Active-low switch */ |
| for (i = 0; i < pdata->t19_num_keys; i++) { |
| if (pdata->t19_keymap[i] == KEY_RESERVED) |
| continue; |
| button = !(message[1] & (1 << i)); |
| input_report_key(input, pdata->t19_keymap[i], button); |
| } |
| } |
| |
| static void mxt_input_sync(struct input_dev *input_dev) |
| { |
| input_mt_report_pointer_emulation(input_dev, false); |
| input_sync(input_dev); |
| } |
| |
| static void mxt_proc_t9_message(struct mxt_data *data, u8 *message) |
| { |
| struct device *dev = &data->client->dev; |
| struct input_dev *input_dev = data->input_dev; |
| int id; |
| u8 status; |
| int x; |
| int y; |
| int area; |
| int amplitude; |
| u8 vector; |
| int tool; |
| |
| /* do not report events if input device not yet registered */ |
| if (!data->enable_reporting) |
| return; |
| |
| id = message[0] - data->T9_reportid_min; |
| status = message[1]; |
| x = (message[2] << 4) | ((message[4] >> 4) & 0xf); |
| y = (message[3] << 4) | ((message[4] & 0xf)); |
| |
| /* Handle 10/12 bit switching */ |
| if (data->max_x < 1024) |
| x >>= 2; |
| if (data->max_y < 1024) |
| y >>= 2; |
| |
| area = message[5]; |
| |
| amplitude = message[6]; |
| vector = message[7]; |
| |
| dev_dbg(dev, |
| "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u vector: %02X\n", |
| id, |
| (status & MXT_T9_DETECT) ? 'D' : '.', |
| (status & MXT_T9_PRESS) ? 'P' : '.', |
| (status & MXT_T9_RELEASE) ? 'R' : '.', |
| (status & MXT_T9_MOVE) ? 'M' : '.', |
| (status & MXT_T9_VECTOR) ? 'V' : '.', |
| (status & MXT_T9_AMP) ? 'A' : '.', |
| (status & MXT_T9_SUPPRESS) ? 'S' : '.', |
| (status & MXT_T9_UNGRIP) ? 'U' : '.', |
| x, y, area, amplitude, vector); |
| |
| input_mt_slot(input_dev, id); |
| |
| if (status & MXT_T9_DETECT) { |
| /* Multiple bits may be set if the host is slow to read the |
| * status messages, indicating all the events that have |
| * happened */ |
| if (status & MXT_T9_RELEASE) { |
| input_mt_report_slot_state(input_dev, |
| MT_TOOL_FINGER, 0); |
| mxt_input_sync(input_dev); |
| } |
| |
| /* A reported size of zero indicates that the reported touch |
| * is a stylus from a linked Stylus T47 object. */ |
| if (area == 0) { |
| area = MXT_TOUCH_MAJOR_T47_STYLUS; |
| tool = MT_TOOL_PEN; |
| } else { |
| tool = MT_TOOL_FINGER; |
| } |
| |
| /* Touch active */ |
| input_mt_report_slot_state(input_dev, tool, 1); |
| input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
| input_report_abs(input_dev, ABS_MT_POSITION_Y, y); |
| input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); |
| input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); |
| input_report_abs(input_dev, ABS_MT_ORIENTATION, vector); |
| } else { |
| /* Touch no longer active, close out slot */ |
| input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); |
| } |
| |
| data->update_input = true; |
| } |
| |
| static void mxt_proc_t100_message(struct mxt_data *data, u8 *message) |
| { |
| struct input_dev *input_dev = data->input_dev; |
| int id; |
| u8 status; |
| int x; |
| int y; |
| int tool; |
| |
| /* do not report events if input device not yet registered */ |
| if (!data->enable_reporting) |
| return; |
| |
| id = message[0] - data->T100_reportid_min - 2; |
| |
| /* ignore SCRSTATUS events */ |
| if (id < 0) |
| return; |
| |
| status = message[1]; |
| x = (message[3] << 8) | message[2]; |
| y = (message[5] << 8) | message[4]; |
| |
| if (!throttle_dbgout(&mxt_proc_t100_dbg, 20, 60000)) |
| dev_dbg(&data->client->dev, |
| "[%u] status:%02X x:%u y:%u area:%02X amp:%02X vec:%02X\n", |
| id, |
| status, |
| x, y, |
| (data->t100_aux_area) ? message[data->t100_aux_area] : 0, |
| (data->t100_aux_ampl) ? message[data->t100_aux_ampl] : 0, |
| (data->t100_aux_vect) ? message[data->t100_aux_vect] : 0); |
| |
| input_mt_slot(input_dev, id); |
| |
| if (status & MXT_T100_DETECT) { |
| /* A reported size of zero indicates that the reported touch |
| * is a stylus from a linked Stylus T47 object. */ |
| if ((status & MXT_T100_TYPE_MASK) == MXT_T100_TYPE_STYLUS) |
| tool = MT_TOOL_PEN; |
| else |
| tool = MT_TOOL_FINGER; |
| |
| /* Touch active */ |
| input_mt_report_slot_state(input_dev, tool, 1); |
| input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
| input_report_abs(input_dev, ABS_MT_POSITION_Y, y); |
| |
| if (data->t100_aux_ampl) |
| input_report_abs(input_dev, ABS_MT_PRESSURE, |
| message[data->t100_aux_ampl]); |
| |
| if (data->t100_aux_area) { |
| if (tool == MT_TOOL_PEN) |
| input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, |
| MXT_TOUCH_MAJOR_T47_STYLUS); |
| else |
| input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, |
| message[data->t100_aux_area]); |
| } |
| |
| if (data->t100_aux_vect) |
| input_report_abs(input_dev, ABS_MT_ORIENTATION, |
| message[data->t100_aux_vect]); |
| } else { |
| /* Touch no longer active, close out slot */ |
| input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); |
| } |
| |
| data->update_input = true; |
| } |
| |
| static void mxt_proc_t15_messages(struct mxt_data *data, u8 *msg) |
| { |
| struct input_dev *input_dev = data->input_dev; |
| int key; |
| bool curr_state, new_state; |
| bool sync = false; |
| unsigned long keystates = le32_to_cpu(msg[2]); |
| |
| /* do not report events if input device not yet registered */ |
| if (!data->enable_reporting) |
| return; |
| |
| for (key = 0; key < data->pdata->t15_num_keys; key++) { |
| curr_state = test_bit(key, &data->t15_keystatus); |
| new_state = test_bit(key, &keystates); |
| |
| ud_set_id(&button_ud_stats, key); |
| |
| if (!curr_state && new_state) { |
| __set_bit(key, &data->t15_keystatus); |
| input_event(input_dev, EV_KEY, |
| data->pdata->t15_keymap[key], 1); |
| sync = true; |
| ud_log_status(&button_ud_stats, true); |
| } else if (curr_state && !new_state) { |
| __clear_bit(key, &data->t15_keystatus); |
| input_event(input_dev, EV_KEY, |
| data->pdata->t15_keymap[key], 0); |
| sync = true; |
| ud_log_status(&button_ud_stats, false); |
| } |
| } |
| |
| if (sync) |
| input_sync(input_dev); |
| } |
| |
| static void mxt_proc_t42_messages(struct mxt_data *data, u8 *msg) |
| { |
| struct device *dev = &data->client->dev; |
| u8 status = msg[1]; |
| |
| if (status & MXT_T42_MSG_TCHSUP) |
| dev_info(dev, "T42 suppress\n"); |
| else |
| dev_info(dev, "T42 normal\n"); |
| } |
| |
| static void mxt_proc_t93_messages(struct mxt_data *data, u8 *msg) |
| { |
| u8 status = msg[1]; |
| |
| if (status & 0x2) { |
| struct device *dev = &data->client->dev; |
| struct input_dev *input_dev = data->input_dev; |
| |
| input_report_key(input_dev, KEY_POWER, 1); |
| input_report_key(input_dev, KEY_POWER, 0); |
| input_sync(input_dev); |
| |
| dev_dbg(dev, "T93 status %s\n", (status & 0x2) ? "DBLTAP" : ""); |
| } |
| } |
| |
| static int mxt_proc_t48_messages(struct mxt_data *data, u8 *msg) |
| { |
| struct device *dev = &data->client->dev; |
| u8 status, state; |
| |
| status = msg[1]; |
| state = msg[4]; |
| |
| dev_dbg(dev, "T48 state %d status %02X %s%s%s%s%s\n", |
| state, |
| status, |
| (status & 0x01) ? "FREQCHG " : "", |
| (status & 0x02) ? "APXCHG " : "", |
| (status & 0x04) ? "ALGOERR " : "", |
| (status & 0x10) ? "STATCHG " : "", |
| (status & 0x20) ? "NLVLCHG " : ""); |
| |
| return 0; |
| } |
| |
| static void mxt_proc_t63_messages(struct mxt_data *data, u8 *msg) |
| { |
| struct device *dev = &data->client->dev; |
| struct input_dev *input_dev = data->input_dev; |
| u8 id; |
| u16 x, y; |
| u8 pressure; |
| |
| /* do not report events if input device not yet registered */ |
| if (!data->enable_reporting) |
| return; |
| |
| /* stylus slots come after touch slots */ |
| id = data->num_touchids + (msg[0] - data->T63_reportid_min); |
| |
| if (id < 0 || id > (data->num_touchids + data->num_stylusids)) { |
| dev_err(dev, "invalid stylus id %d, max slot is %d\n", |
| id, data->num_stylusids); |
| return; |
| } |
| |
| x = msg[3] | (msg[4] << 8); |
| y = msg[5] | (msg[6] << 8); |
| pressure = msg[7] & MXT_T63_STYLUS_PRESSURE_MASK; |
| |
| dev_dbg(dev, |
| "[%d] %c%c%c%c x: %d y: %d pressure: %d stylus:%c%c%c%c\n", |
| id, |
| (msg[1] & MXT_T63_STYLUS_SUPPRESS) ? 'S' : '.', |
| (msg[1] & MXT_T63_STYLUS_MOVE) ? 'M' : '.', |
| (msg[1] & MXT_T63_STYLUS_RELEASE) ? 'R' : '.', |
| (msg[1] & MXT_T63_STYLUS_PRESS) ? 'P' : '.', |
| x, y, pressure, |
| (msg[2] & MXT_T63_STYLUS_BARREL) ? 'B' : '.', |
| (msg[2] & MXT_T63_STYLUS_ERASER) ? 'E' : '.', |
| (msg[2] & MXT_T63_STYLUS_TIP) ? 'T' : '.', |
| (msg[2] & MXT_T63_STYLUS_DETECT) ? 'D' : '.'); |
| |
| input_mt_slot(input_dev, id); |
| |
| if (msg[2] & MXT_T63_STYLUS_DETECT) { |
| input_mt_report_slot_state(input_dev, MT_TOOL_PEN, 1); |
| input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
| input_report_abs(input_dev, ABS_MT_POSITION_Y, y); |
| input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); |
| } else { |
| input_mt_report_slot_state(input_dev, MT_TOOL_PEN, 0); |
| } |
| |
| input_report_key(input_dev, BTN_STYLUS, |
| (msg[2] & MXT_T63_STYLUS_ERASER)); |
| input_report_key(input_dev, BTN_STYLUS2, |
| (msg[2] & MXT_T63_STYLUS_BARREL)); |
| |
| mxt_input_sync(input_dev); |
| } |
| |
| static int mxt_proc_message(struct mxt_data *data, u8 *message) |
| { |
| u8 report_id = message[0]; |
| bool dump = data->debug_enabled; |
| |
| if (report_id == MXT_RPTID_NOMSG) |
| return 0; |
| |
| if (report_id == data->T6_reportid) { |
| mxt_proc_t6_messages(data, message); |
| } else if (report_id >= data->T9_reportid_min |
| && report_id <= data->T9_reportid_max) { |
| mxt_proc_t9_message(data, message); |
| } else if (report_id >= data->T100_reportid_min |
| && report_id <= data->T100_reportid_max) { |
| mxt_proc_t100_message(data, message); |
| } else if (report_id == data->T19_reportid) { |
| mxt_input_button(data, message); |
| data->update_input = true; |
| } else if (report_id >= data->T63_reportid_min |
| && report_id <= data->T63_reportid_max) { |
| mxt_proc_t63_messages(data, message); |
| } else if (report_id >= data->T42_reportid_min |
| && report_id <= data->T42_reportid_max) { |
| mxt_proc_t42_messages(data, message); |
| } else if (report_id == data->T48_reportid) { |
| mxt_proc_t48_messages(data, message); |
| } else if (report_id >= data->T15_reportid_min |
| && report_id <= data->T15_reportid_max) { |
| mxt_proc_t15_messages(data, message); |
| } else if (report_id == data->T93_reportid) { |
| mxt_proc_t93_messages(data, message); |
| } else { |
| dump = true; |
| } |
| |
| if (dump) |
| mxt_dump_message(data, message); |
| |
| if (data->debug_v2_enabled) |
| mxt_debug_msg_add(data, message); |
| |
| return 1; |
| } |
| |
| static int mxt_read_and_process_messages(struct mxt_data *data, u8 count) |
| { |
| struct device *dev = &data->client->dev; |
| int ret; |
| int i; |
| u8 num_valid = 0; |
| |
| /* Safety check for msg_buf */ |
| if (count > data->max_reportid) |
| return -EINVAL; |
| |
| /* Process remaining messages if necessary */ |
| ret = __mxt_read_reg(data->client, data->T5_address, |
| data->T5_msg_size * count, data->msg_buf); |
| if (ret) { |
| dev_err(dev, "Failed to read %u messages (%d)\n", count, ret); |
| return ret; |
| } |
| |
| for (i = 0; i < count; i++) { |
| ret = mxt_proc_message(data, |
| data->msg_buf + data->T5_msg_size * i); |
| |
| if (ret == 1) |
| num_valid++; |
| } |
| |
| /* return number of messages read */ |
| return num_valid; |
| } |
| |
| static irqreturn_t mxt_process_messages_t44(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| int ret; |
| u8 count, num_left; |
| |
| if (!data->msg_buf) { |
| dev_err(dev, "Message buffer not allocated!!!\n"); |
| return IRQ_NONE; |
| } |
| |
| /* Read T44 and T5 together */ |
| ret = __mxt_read_reg(data->client, data->T44_address, |
| data->T5_msg_size + 1, data->msg_buf); |
| if (ret) { |
| dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret); |
| return IRQ_NONE; |
| } |
| |
| count = data->msg_buf[0]; |
| |
| if (count == 0) { |
| dev_warn(dev, "Interrupt triggered but zero messages\n"); |
| return IRQ_NONE; |
| } else if (count > data->max_reportid) { |
| dev_err(dev, "T44 count %d exceeded max report id\n", count); |
| count = data->max_reportid; |
| } |
| |
| /* Process first message */ |
| ret = mxt_proc_message(data, data->msg_buf + 1); |
| if (ret < 0) { |
| dev_warn(dev, "Unexpected invalid message\n"); |
| return IRQ_NONE; |
| } |
| |
| num_left = count - 1; |
| |
| /* Process remaining messages if necessary */ |
| if (num_left) { |
| ret = mxt_read_and_process_messages(data, num_left); |
| if (ret < 0) |
| goto end; |
| else if (ret != num_left) |
| dev_warn(dev, "Unexpected invalid message\n"); |
| } |
| |
| end: |
| if (data->update_input) { |
| mxt_input_sync(data->input_dev); |
| data->update_input = false; |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int mxt_process_messages_until_invalid(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| int num_handled, processed = 0; |
| bool pin_high; |
| |
| do { |
| /* It appears host has to read "beyond" the message */ |
| /* with invalid id to ensure CHG line gets deasserted */ |
| num_handled = mxt_read_and_process_messages(data, 3); |
| processed += num_handled; |
| } while (num_handled > 0); |
| |
| if (processed) |
| dev_dbg(dev, "processed %d messages\n", processed); |
| |
| pin_high = gpio_get_value(data->pdata->gpio_irq) == 1; |
| if (!pin_high) |
| dev_err(dev, "CHG pin still asserted\n"); |
| |
| return 0; |
| } |
| |
| static irqreturn_t mxt_process_messages(struct mxt_data *data) |
| { |
| int total_handled, num_handled; |
| u8 count = data->last_message_count; |
| |
| if (count < 1 || count > data->max_reportid) |
| count = 1; |
| |
| /* include final invalid message */ |
| total_handled = mxt_read_and_process_messages(data, count + 1); |
| if (total_handled < 0) |
| return IRQ_NONE; |
| /* if there were invalid messages, then we are done */ |
| else if (total_handled <= count) |
| goto update_count; |
| |
| /* read two at a time until an invalid message or else we reach |
| * reportid limit */ |
| do { |
| num_handled = mxt_read_and_process_messages(data, 2); |
| if (num_handled < 0) |
| return IRQ_NONE; |
| |
| total_handled += num_handled; |
| |
| if (num_handled < 2) |
| break; |
| } while (total_handled < data->num_touchids); |
| |
| update_count: |
| data->last_message_count = total_handled; |
| |
| if (data->enable_reporting && data->update_input) { |
| mxt_input_sync(data->input_dev); |
| data->update_input = false; |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
| { |
| struct mxt_data *data = dev_id; |
| int state = mxt_get_sensor_state(data); |
| |
| if (data->in_bootloader || |
| (!data->poweron && !data->mode_is_wakeable) || |
| (state == STATE_UNKNOWN)) { |
| /* bootloader state transition completion */ |
| complete(&data->bl_completion); |
| return IRQ_HANDLED; |
| } |
| |
| if (!data->object_table) |
| return IRQ_NONE; |
| |
| if (data->T44_address) |
| return mxt_process_messages_t44(data); |
| else |
| return mxt_process_messages(data); |
| } |
| |
| static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, |
| u8 value, bool wait) |
| { |
| u16 reg; |
| u8 command_register; |
| int timeout_counter = 0; |
| int ret; |
| |
| reg = data->T6_address + cmd_offset; |
| |
| ret = mxt_write_reg(data->client, reg, value); |
| if (ret) |
| return ret; |
| |
| if (!wait) |
| return 0; |
| |
| do { |
| msleep(20); |
| ret = __mxt_read_reg(data->client, reg, 1, &command_register); |
| if (ret) |
| return ret; |
| } while ((command_register != 0) && (timeout_counter++ <= 100)); |
| |
| if (timeout_counter > 100) { |
| dev_err(&data->client->dev, "Command failed!\n"); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_read_revision_id(struct mxt_data *data, u8 *revision) |
| { |
| struct mxt_object *object; |
| int error = -EINVAL; |
| |
| object = mxt_get_object(data, MXT_DEBUG_DIAGNOSTIC_T37); |
| if (!object) |
| goto err_exit; |
| |
| error = mxt_t6_command(data, MXT_COMMAND_DIAGNOSTIC, |
| MXT_IDENT_VALUE, true); |
| if (error) |
| goto err_exit; |
| |
| error = __mxt_read_reg(data->client, |
| object->start_address + MXT_T37_REVISION, |
| sizeof(*revision), revision); |
| err_exit: |
| return error; |
| } |
| |
| static int mxt_soft_reset(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| int ret = 0; |
| |
| dev_info(dev, "Resetting chip\n"); |
| |
| INIT_COMPLETION(data->reset_completion); |
| |
| ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); |
| if (ret) |
| return ret; |
| |
| ret = mxt_wait_for_completion(data, &data->reset_completion, |
| MXT_RESET_TIMEOUT); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) |
| { |
| /* on failure, CRC is set to 0 and config will always be downloaded */ |
| data->config_crc = 0; |
| INIT_COMPLETION(data->crc_completion); |
| |
| mxt_t6_command(data, cmd, value, true); |
| |
| /* Wait for crc message. On failure, CRC is set to 0 and config will |
| * always be downloaded */ |
| mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); |
| } |
| |
| static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte) |
| { |
| static const unsigned int crcpoly = 0x80001B; |
| u32 result; |
| u32 data_word; |
| |
| data_word = (secondbyte << 8) | firstbyte; |
| result = ((*crc << 1) ^ data_word); |
| |
| if (result & 0x1000000) |
| result ^= crcpoly; |
| |
| *crc = result; |
| } |
| |
| static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off) |
| { |
| u32 crc = 0; |
| u8 *ptr = base + start_off; |
| u8 *last_val = base + end_off - 1; |
| |
| if (end_off < start_off) |
| return -EINVAL; |
| |
| while (ptr < last_val) { |
| mxt_calc_crc24(&crc, *ptr, *(ptr + 1)); |
| ptr += 2; |
| } |
| |
| /* if len is odd, fill the last byte with 0 */ |
| if (ptr == last_val) |
| mxt_calc_crc24(&crc, *ptr, 0); |
| |
| /* Mask to 24-bit */ |
| crc &= 0x00FFFFFF; |
| |
| return crc; |
| } |
| |
| static int mxt_check_retrigen(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| int error; |
| int val; |
| |
| if (data->pdata->irqflags & IRQF_TRIGGER_LOW) |
| return 0; |
| |
| if (data->T18_address) { |
| error = __mxt_read_reg(client, |
| data->T18_address + MXT_COMMS_CTRL, |
| 1, &val); |
| if (error) |
| return error; |
| |
| if (val & MXT_COMMS_RETRIGEN) |
| return 0; |
| } |
| |
| dev_warn(&client->dev, "Enabling RETRIGEN workaround\n"); |
| data->use_retrigen_workaround = true; |
| return 0; |
| } |
| |
| /* |
| * mxt_check_reg_init - download configuration to chip |
| * |
| * Atmel Raw Config File Format |
| * |
| * The first four lines of the raw config file contain: |
| * 1) Version |
| * 2) Chip ID Information (first 7 bytes of device memory) |
| * 3) Chip Information Block 24-bit CRC Checksum |
| * 4) Chip Configuration 24-bit CRC Checksum |
| * |
| * The rest of the file consists of one line per object instance: |
| * <TYPE> <INSTANCE> <SIZE> <CONTENTS> |
| * |
| * <TYPE> - 2-byte object type as hex |
| * <INSTANCE> - 2-byte object instance number as hex |
| * <SIZE> - 2-byte object size as hex |
| * <CONTENTS> - array of <SIZE> 1-byte hex values |
| */ |
| static int mxt_check_reg_init(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| struct mxt_info cfg_info; |
| struct mxt_object *object; |
| const struct firmware *cfg = NULL; |
| int ret; |
| int offset; |
| int data_pos; |
| int byte_offset; |
| int i; |
| int cfg_start_ofs; |
| u32 info_crc, config_crc, calculated_crc; |
| u8 *config_mem; |
| size_t config_mem_size; |
| unsigned int type, instance, size; |
| u8 val; |
| u16 reg; |
| |
| if (!data->cfg_name) |
| return 0; |
| |
| ret = request_firmware(&cfg, data->cfg_name, dev); |
| if (ret < 0) { |
| dev_err(dev, "Failure to request config file %s\n", |
| data->cfg_name); |
| return 0; |
| } |
| |
| mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); |
| |
| if (strncmp(cfg->data, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) { |
| dev_err(dev, "Unrecognised config file\n"); |
| ret = -EINVAL; |
| goto release; |
| } |
| |
| data_pos = strlen(MXT_CFG_MAGIC); |
| |
| /* Load information block and check */ |
| for (i = 0; i < sizeof(struct mxt_info); i++) { |
| ret = sscanf(cfg->data + data_pos, "%hhx%n", |
| (unsigned char *)&cfg_info + i, |
| &offset); |
| if (ret != 1) { |
| dev_err(dev, "Bad format\n"); |
| ret = -EINVAL; |
| goto release; |
| } |
| |
| data_pos += offset; |
| } |
| |
| if (cfg_info.family_id != data->info->family_id) { |
| dev_err(dev, "Family ID mismatch!\n"); |
| ret = -EINVAL; |
| goto release; |
| } |
| |
| if (cfg_info.variant_id != data->info->variant_id) { |
| dev_err(dev, "Variant ID mismatch!\n"); |
| ret = -EINVAL; |
| goto release; |
| } |
| |
| /* Read CRCs */ |
| ret = sscanf(cfg->data + data_pos, "%x%n", &info_crc, &offset); |
| if (ret != 1) { |
| dev_err(dev, "Bad format: failed to parse Info CRC\n"); |
| ret = -EINVAL; |
| goto release; |
| } |
| data_pos += offset; |
| |
| ret = sscanf(cfg->data + data_pos, "%x%n", &config_crc, &offset); |
| if (ret != 1) { |
| dev_err(dev, "Bad format: failed to parse Config CRC\n"); |
| ret = -EINVAL; |
| goto release; |
| } |
| data_pos += offset; |
| |
| /* The Info Block CRC is calculated over mxt_info and the object table |
| * If it does not match then we are trying to load the configuration |
| * from a different chip or firmware version, so the configuration CRC |
| * is invalid anyway. */ |
| if (info_crc == data->info_crc) { |
| if (config_crc == 0 || data->config_crc == 0) { |
| dev_info(dev, "CRC zero, attempting to apply config\n"); |
| } else if (config_crc == data->config_crc) { |
| dev_info(dev, "Config CRC 0x%06X: OK\n", |
| data->config_crc); |
| ret = 0; |
| goto release; |
| } else { |
| dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n", |
| data->config_crc, config_crc); |
| } |
| } else { |
| dev_warn(dev, |
| "Warning: Info CRC error - device=0x%06X file=0x%06X\n", |
| data->info_crc, info_crc); |
| } |
| |
| /* Malloc memory to store configuration */ |
| cfg_start_ofs = MXT_OBJECT_START |
| + data->info->object_num * sizeof(struct mxt_object) |
| + MXT_INFO_CHECKSUM_SIZE; |
| config_mem_size = data->mem_size - cfg_start_ofs; |
| config_mem = kzalloc(config_mem_size, GFP_KERNEL); |
| if (!config_mem) { |
| dev_err(dev, "Failed to allocate memory\n"); |
| ret = -ENOMEM; |
| goto release; |
| } |
| |
| while (data_pos < cfg->size) { |
| /* Read type, instance, length */ |
| ret = sscanf(cfg->data + data_pos, "%x %x %x%n", |
| &type, &instance, &size, &offset); |
| if (ret == 0) { |
| /* EOF */ |
| break; |
| } else if (ret != 3) { |
| dev_err(dev, "Bad format: failed to parse object\n"); |
| ret = -EINVAL; |
| goto release_mem; |
| } |
| data_pos += offset; |
| |
| object = mxt_get_object(data, type); |
| if (!object) { |
| /* Skip object */ |
| for (i = 0; i < size; i++) { |
| ret = sscanf(cfg->data + data_pos, "%hhx%n", |
| &val, |
| &offset); |
| data_pos += offset; |
| } |
| continue; |
| } |
| |
| if (size > mxt_obj_size(object)) { |
| /* Either we are in fallback mode due to wrong |
| * config or config from a later fw version, |
| * or the file is corrupt or hand-edited */ |
| dev_warn(dev, "Discarding %u byte(s) in T%u\n", |
| size - mxt_obj_size(object), type); |
| } else if (mxt_obj_size(object) > size) { |
| /* If firmware is upgraded, new bytes may be added to |
| * end of objects. It is generally forward compatible |
| * to zero these bytes - previous behaviour will be |
| * retained. However this does invalidate the CRC and |
| * will force fallback mode until the configuration is |
| * updated. We warn here but do nothing else - the |
| * malloc has zeroed the entire configuration. */ |
| dev_warn(dev, "Zeroing %u byte(s) in T%d\n", |
| mxt_obj_size(object) - size, type); |
| } |
| |
| if (instance >= mxt_obj_instances(object)) { |
| dev_err(dev, "Object instances exceeded!\n"); |
| ret = -EINVAL; |
| goto release_mem; |
| } |
| |
| reg = object->start_address + mxt_obj_size(object) * instance; |
| |
| for (i = 0; i < size; i++) { |
| ret = sscanf(cfg->data + data_pos, "%hhx%n", |
| &val, |
| &offset); |
| if (ret != 1) { |
| dev_err(dev, "Bad format in T%d\n", type); |
| ret = -EINVAL; |
| goto release_mem; |
| } |
| data_pos += offset; |
| |
| if (i > mxt_obj_size(object)) |
| continue; |
| |
| byte_offset = reg + i - cfg_start_ofs; |
| |
| if ((byte_offset >= 0) |
| && (byte_offset <= config_mem_size)) { |
| *(config_mem + byte_offset) = val; |
| } else { |
| dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n", |
| reg, object->type, byte_offset); |
| ret = -EINVAL; |
| goto release_mem; |
| } |
| } |
| } |
| |
| /* calculate crc of the received configs (not the raw config file) */ |
| if (data->T7_address < cfg_start_ofs) { |
| dev_err(dev, "Bad T7 address, T7addr = %x, config offset %x\n", |
| data->T7_address, cfg_start_ofs); |
| ret = 0; |
| goto release_mem; |
| } |
| |
| calculated_crc = mxt_calculate_crc(config_mem, |
| data->T7_address - cfg_start_ofs, |
| config_mem_size); |
| |
| if (config_crc > 0 && (config_crc != calculated_crc)) |
| dev_warn(dev, "Config CRC error, calculated=%06X, file=%06X\n", |
| calculated_crc, config_crc); |
| |
| /* Write configuration as blocks */ |
| byte_offset = 0; |
| while (byte_offset < config_mem_size) { |
| size = config_mem_size - byte_offset; |
| |
| if (size > MXT_MAX_BLOCK_WRITE) |
| size = MXT_MAX_BLOCK_WRITE; |
| |
| ret = __mxt_write_reg(data->client, |
| cfg_start_ofs + byte_offset, |
| size, config_mem + byte_offset); |
| if (ret != 0) { |
| dev_err(dev, "Config write error, ret=%d\n", ret); |
| goto release_mem; |
| } |
| |
| byte_offset += size; |
| } |
| |
| mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
| |
| ret = mxt_check_retrigen(data); |
| if (ret) |
| goto release_mem; |
| |
| ret = mxt_soft_reset(data); |
| if (ret) |
| goto release_mem; |
| |
| dev_info(dev, "Config written\n"); |
| |
| /* T7 config may have changed */ |
| mxt_init_t7_power_cfg(data); |
| |
| release_mem: |
| kfree(config_mem); |
| release: |
| release_firmware(cfg); |
| return ret; |
| } |
| |
| static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep) |
| { |
| struct device *dev = &data->client->dev; |
| int error; |
| struct t7_config *new_config; |
| struct t7_config deepsleep = { .active = 0, .idle = 0 }; |
| |
| if (sleep == MXT_POWER_CFG_DEEPSLEEP) |
| new_config = &deepsleep; |
| else |
| new_config = &data->t7_on_cfg; |
| |
| error = __mxt_write_reg(data->client, data->T7_address, |
| sizeof(*new_config), |
| new_config); |
| if (error) |
| return error; |
| |
| dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d ACTV2IDLE:%d\n", |
| new_config->active, new_config->idle, new_config->actv2idle); |
| |
| return 0; |
| } |
| |
| static int mxt_init_t7_power_cfg(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| int error; |
| bool retry = false; |
| |
| recheck: |
| error = __mxt_read_reg(data->client, data->T7_address, |
| sizeof(data->t7_on_cfg), &data->t7_on_cfg); |
| if (error) |
| return error; |
| |
| if (data->t7_on_cfg.active == 0 || data->t7_on_cfg.idle == 0) { |
| if (!retry) { |
| dev_info(dev, "T7 cfg zero, resetting\n"); |
| mxt_soft_reset(data); |
| retry = true; |
| goto recheck; |
| } |
| |
| dev_dbg(dev, "T7 cfg zero after reset, overriding\n"); |
| data->t7_on_cfg.active = 20; |
| data->t7_on_cfg.idle = 100; |
| data->t7_on_cfg.actv2idle = 50; |
| return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); |
| } |
| |
| dev_info(dev, "Initialized power cfg: ACTV %d, IDLE %d\n", |
| data->t7_on_cfg.active, data->t7_on_cfg.idle); |
| return 0; |
| } |
| |
| static bool mxt_t47_stylus_state(struct mxt_data *data) |
| { |
| struct mxt_object *object; |
| int error; |
| u8 control = 0; |
| |
| object = mxt_get_object(data, MXT_PROCI_STYLUS_T47); |
| if (!object) |
| return false; |
| |
| error = __mxt_read_reg(data->client, object->start_address, |
| sizeof(control), &control); |
| if (error) |
| dev_warn(&data->client->dev, "Unable to read T47\n"); |
| |
| return control ? true : false; |
| } |
| |
| static inline int mxt_acquire_irq(struct mxt_data *data) |
| { |
| return mxt_process_messages_until_invalid(data); |
| } |
| |
| static void mxt_irq_enable(struct mxt_data *data, bool enable) |
| { |
| if (enable && !data->irq_enabled) { |
| enable_irq(data->irq); |
| data->irq_enabled = true; |
| } else if (!enable && data->irq_enabled) { |
| disable_irq(data->irq); |
| data->irq_enabled = false; |
| } |
| } |
| |
| static void mxt_apply_patchset(struct mxt_data *data, struct mxt_patch *patch) |
| { |
| struct mxt_obj_patch *mo_patch; |
| struct mxt_object *object; |
| u16 reg2w; |
| int error; |
| |
| if (!patch || !patch->cfg_num) { |
| pr_debug("patchset is empty!\n"); |
| return; |
| } |
| |
| list_for_each_entry(mo_patch, &patch->cfg_head, link) { |
| object = mxt_get_object(data, mo_patch->number); |
| if (!object) |
| continue; |
| |
| if (mo_patch->offset > object->size_minus_one) |
| continue; |
| |
| reg2w = object->start_address + |
| mxt_obj_size(object) * mo_patch->instance + |
| mo_patch->offset; |
| |
| dev_dbg(&data->client->dev, "patching T%d-%d@%d,0x%x off=%d\n", |
| mo_patch->number, mo_patch->instance, |
| mo_patch->offset, mo_patch->value, reg2w); |
| |
| error = __mxt_write_reg(data->client, reg2w, |
| 1, &mo_patch->value); |
| if (error) |
| dev_warn(&data->client->dev, "patch failed\n"); |
| } |
| } |
| |
| static void mxt_enable_wakeup_source(struct mxt_data *data, bool enable) |
| { |
| int error; |
| error = irq_set_irq_wake(data->irq, (int)enable); |
| pr_debug("%s wakeup; rc=%d\n", enable ? "enabled" : "disabled", error); |
| } |
| |
| static void mxt_sensor_state_config(struct mxt_data *data, int state) |
| { |
| if (data->mode_is_wakeable) |
| mxt_enable_wakeup_source(data, true); |
| mxt_apply_patchset(data, &data->current_mode->patch_data[state]); |
| pr_debug("applying %s in mode %s\n", |
| state == ACTIVE_IDX ? "ACTIVE" : "SUSPEND", |
| data->current_mode == data->default_mode ? "DEFAULT" : "OTHER"); |
| } |
| |
| static void mxt_wait_for_idle(struct mxt_data *data) |
| { |
| int state, timeout_retries = 0; |
| unsigned long start_wait_jiffies = jiffies; |
| |
| /* Reset completion indicated by asserting CHG */ |
| /* Wait for CHG asserted or timeout after 200ms */ |
| do { |
| state = gpio_get_value(data->pdata->gpio_irq); |
| if (!state) |
| break; |
| usleep_range(1000, 1000); |
| } while (++timeout_retries < 100); |
| |
| if (!state) |
| dev_dbg(&data->client->dev, "reset took %ums\n", |
| jiffies_to_msecs(jiffies - start_wait_jiffies)); |
| else |
| dev_warn(&data->client->dev, "timeout waiting for idle %ums\n", |
| jiffies_to_msecs(jiffies - start_wait_jiffies)); |
| } |
| |
| static inline void mxt_set_alternate_mode(struct mxt_data *data, |
| struct mxt_patchset *mode, bool wakeable, bool persistent) |
| { |
| data->mode_is_wakeable = wakeable; |
| data->mode_is_persistent = persistent; |
| data->current_mode = mode; |
| if (wakeable) |
| mxt_enable_wakeup_source(data, true); |
| } |
| |
| static inline void mxt_restore_default_mode(struct mxt_data *data) |
| { |
| if (data->mode_is_wakeable) |
| mxt_enable_wakeup_source(data, false); |
| data->mode_is_wakeable = false; |
| data->mode_is_persistent = true; |
| data->current_mode = data->default_mode; |
| } |
| |
| static const char * const mxt_state_names[] = { "UNKNOWN", "ACTIVE", "SUSPEND", |
| "UNUSED", "STANDBY", "BL", "INIT", "FLASH", "QUERY", "INVALID" }; |
| |
| static const char *mxt_state_name(int state) |
| { |
| int index = state < 0 || state > STATE_INVALID ? STATE_INVALID : state; |
| return mxt_state_names[index]; |
| } |
| |
| static int mxt_get_sensor_state(struct mxt_data *data) |
| { |
| return atomic_read(&data->state); |
| } |
| |
| static void mxt_set_sensor_state(struct mxt_data *data, int state) |
| { |
| int current_state = mxt_get_sensor_state(data); |
| |
| if (current_state == state) |
| return; |
| |
| switch (state) { |
| case STATE_QUERY: |
| /* drop flag to allow object specific message handling */ |
| if (data->in_bootloader) |
| data->in_bootloader = false; |
| case STATE_UNKNOWN: |
| case STATE_FLASH: |
| /* no special handling for these states */ |
| break; |
| |
| case STATE_SUSPEND: |
| if (!data->mode_is_wakeable) |
| mxt_irq_enable(data, false); |
| data->enable_reporting = false; |
| if (!data->in_bootloader) |
| mxt_sensor_state_config(data, SUSPEND_IDX); |
| break; |
| |
| case STATE_ACTIVE: |
| if (!data->in_bootloader) |
| mxt_sensor_state_config(data, ACTIVE_IDX); |
| data->enable_reporting = true; |
| |
| if (!data->mode_is_persistent) { |
| mxt_restore_default_mode(data); |
| pr_debug("Non-persistent mode; restoring default\n"); |
| } |
| break; |
| |
| case STATE_STANDBY: |
| mxt_irq_enable(data, false); |
| break; |
| |
| case STATE_BL: |
| if (!data->in_bootloader) |
| data->in_bootloader = true; |
| |
| mxt_irq_enable(data, false); |
| break; |
| |
| case STATE_INIT: |
| /* set flag to avoid object specific message handling */ |
| if (!data->in_bootloader) |
| data->in_bootloader = true; |
| break; |
| } |
| |
| pr_info("state change %s -> %s\n", mxt_state_name(current_state), |
| mxt_state_name(state)); |
| atomic_set(&data->state, state); |
| |
| if (state == STATE_ACTIVE) |
| mxt_irq_enable(data, true); |
| } |
| |
| static void mxt_free_input_device(struct mxt_data *data) |
| { |
| if (data->input_dev) { |
| if (data->input_registered) |
| input_unregister_device(data->input_dev); |
| else |
| input_free_device(data->input_dev); |
| data->input_dev = NULL; |
| data->input_registered = false; |
| } |
| } |
| |
| static void mxt_free_object_table(struct mxt_data *data) |
| { |
| mxt_debug_msg_remove(data); |
| |
| kfree(data->raw_info_block); |
| data->object_table = NULL; |
| data->info = NULL; |
| data->raw_info_block = NULL; |
| kfree(data->msg_buf); |
| data->msg_buf = NULL; |
| kfree(data->T100_data); |
| data->T100_data = NULL; |
| |
| mxt_free_input_device(data); |
| |
| data->enable_reporting = false; |
| data->T5_address = 0; |
| data->T5_msg_size = 0; |
| data->T6_reportid = 0; |
| data->T7_address = 0; |
| data->T9_reportid_min = 0; |
| data->T9_reportid_max = 0; |
| data->T15_reportid_min = 0; |
| data->T15_reportid_max = 0; |
| data->T18_address = 0; |
| data->T19_reportid = 0; |
| data->T42_reportid_min = 0; |
| data->T42_reportid_max = 0; |
| data->T44_address = 0; |
| data->T48_reportid = 0; |
| data->T63_reportid_min = 0; |
| data->T63_reportid_max = 0; |
| data->T93_reportid = 0; |
| data->T100_reportid_min = 0; |
| data->T100_reportid_max = 0; |
| data->max_reportid = 0; |
| data->T38_address = 0; |
| } |
| |
| static int mxt_parse_object_table(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| int i; |
| u8 reportid; |
| u16 end_address; |
| |
| /* Valid Report IDs start counting from 1 */ |
| reportid = 1; |
| data->mem_size = 0; |
| for (i = 0; i < data->info->object_num; i++) { |
| struct mxt_object *object = data->object_table + i; |
| u8 min_id, max_id; |
| |
| le16_to_cpus(&object->start_address); |
| |
| if (object->num_report_ids) { |
| min_id = reportid; |
| reportid += object->num_report_ids * |
| mxt_obj_instances(object); |
| max_id = reportid - 1; |
| } else { |
| min_id = 0; |
| max_id = 0; |
| } |
| |
| dev_dbg(&data->client->dev, |
| "T%-3u Start:%-4u Size:%-3u Instances:%u Report IDs:%u-%u\n", |
| object->type, object->start_address, |
| mxt_obj_size(object), mxt_obj_instances(object), |
| min_id, max_id); |
| |
| switch (object->type) { |
| case MXT_GEN_MESSAGE_T5: |
| if (data->info->family_id == 0x80) { |
| /* On mXT224 read and discard unused CRC byte |
| * otherwise DMA reads are misaligned */ |
| data->T5_msg_size = mxt_obj_size(object); |
| } else { |
| /* CRC not enabled, so skip last byte */ |
| data->T5_msg_size = mxt_obj_size(object) - 1; |
| } |
| data->T5_address = object->start_address; |
| case MXT_GEN_COMMAND_T6: |
| data->T6_reportid = min_id; |
| data->T6_address = object->start_address; |
| break; |
| case MXT_GEN_POWER_T7: |
| data->T7_address = object->start_address; |
| break; |
| case MXT_SPT_USERDATA_T38: |
| data->T38_address = object->start_address; |
| break; |
| case MXT_TOUCH_MULTI_T9: |
| /* Only handle messages from first T9 instance */ |
| data->T9_reportid_min = min_id; |
| data->T9_reportid_max = min_id + |
| object->num_report_ids - 1; |
| data->num_touchids = object->num_report_ids; |
| break; |
| case MXT_TOUCH_KEYARRAY_T15: |
| data->T15_reportid_min = min_id; |
| data->T15_reportid_max = max_id; |
| break; |
| case MXT_SPT_COMMSCONFIG_T18: |
| data->T18_address = object->start_address; |
| break; |
| case MXT_PROCI_TOUCHSUPPRESSION_T42: |
| data->T42_reportid_min = min_id; |
| data->T42_reportid_max = max_id; |
| break; |
| case MXT_SPT_MESSAGECOUNT_T44: |
| data->T44_address = object->start_address; |
| break; |
| case MXT_SPT_GPIOPWM_T19: |
| data->T19_reportid = min_id; |
| break; |
| case MXT_PROCG_NOISESUPPRESSION_T48: |
| data->T48_reportid = min_id; |
| break; |
| case MXT_PROCI_ACTIVE_STYLUS_T63: |
| /* Only handle messages from first T63 instance */ |
| data->T63_reportid_min = min_id; |
| data->T63_reportid_max = min_id; |
| data->num_stylusids = 1; |
| break; |
| case MXT_PROCI_TOUCHSEQUENCELOGGER_T93: |
| data->T93_reportid = min_id; |
| break; |
| case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
| data->T100_reportid_min = min_id; |
| data->T100_reportid_max = max_id; |
| /* first two report IDs reserved */ |
| data->num_touchids = object->num_report_ids - 2; |
| break; |
| } |
| |
| end_address = object->start_address |
| + mxt_obj_size(object) * mxt_obj_instances(object) - 1; |
| |
| if (end_address >= data->mem_size) |
| data->mem_size = end_address + 1; |
| } |
| |
| /* Store maximum reportid */ |
| data->max_reportid = reportid; |
| |
| /* If T44 exists, T5 position has to be directly after */ |
| if (data->T44_address && (data->T5_address != data->T44_address + 1)) { |
| dev_err(&client->dev, "Invalid T44 position\n"); |
| return -EINVAL; |
| } |
| |
| data->msg_buf = kcalloc(data->max_reportid, |
| data->T5_msg_size, GFP_KERNEL); |
| if (!data->msg_buf) { |
| dev_err(&client->dev, "Failed to allocate message buffer\n"); |
| return -ENOMEM; |
| } |
| |
| return 0; |
| } |
| |
| static u32 mxt_update_config_id(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| u8 userdata[4] = {0}; |
| u32 config_id = 0; |
| int error; |
| |
| error = __mxt_read_reg(client, data->T38_address, |
| sizeof(userdata), userdata); |
| if (error) |
| dev_warn(&client->dev, "Unable to read config id\n"); |
| else |
| config_id = be32_to_cpu(*(unsigned int *)&userdata[0]); |
| |
| return config_id; |
| } |
| |
| static int mxt_read_info_block(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| int error; |
| size_t size; |
| void *buf; |
| uint8_t num_objects; |
| u32 calculated_crc; |
| u8 *crc_ptr; |
| u8 revision = 0; |
| |
| /* If info block already allocated, free it */ |
| if (data->raw_info_block != NULL) |
| mxt_free_object_table(data); |
| |
| /* Read 7-byte ID information block starting at address 0 */ |
| size = sizeof(struct mxt_info); |
| buf = kzalloc(size, GFP_KERNEL); |
| if (!buf) { |
| dev_err(&client->dev, "Failed to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| error = __mxt_read_reg(client, 0, size, buf); |
| if (error) { |
| dev_err(&client->dev, "error reading info block\n"); |
| goto err_free_mem; |
| } |
| |
| /* Resize buffer to give space for rest of info block */ |
| num_objects = ((struct mxt_info *)buf)->object_num; |
| size += (num_objects * sizeof(struct mxt_object)) |
| + MXT_INFO_CHECKSUM_SIZE; |
| |
| buf = krealloc(buf, size, GFP_KERNEL); |
| if (!buf) { |
| dev_err(&client->dev, "Failed to allocate memory\n"); |
| error = -ENOMEM; |
| goto err_free_mem; |
| } |
| |
| /* Read rest of info block */ |
| error = __mxt_read_reg(client, MXT_OBJECT_START, |
| size - MXT_OBJECT_START, |
| buf + MXT_OBJECT_START); |
| if (error) { |
| dev_err(&client->dev, "error reading object table\n"); |
| goto err_free_mem; |
| } |
| |
| /* Extract & calculate checksum */ |
| crc_ptr = buf + size - MXT_INFO_CHECKSUM_SIZE; |
| data->info_crc = crc_ptr[0] | (crc_ptr[1] << 8) | (crc_ptr[2] << 16); |
| |
| calculated_crc = mxt_calculate_crc(buf, 0, |
| size - MXT_INFO_CHECKSUM_SIZE); |
| |
| /* CRC mismatch can be caused by data corruption due to I2C comms |
| * issue or else device is not using Object Based Protocol */ |
| if ((data->info_crc == 0) || (data->info_crc != calculated_crc)) { |
| dev_err(&client->dev, |
| "Info Block CRC error calculated=0x%06X read=0x%06X\n", |
| data->info_crc, calculated_crc); |
| return -EIO; |
| } |
| |
| /* Save pointers in device data structure */ |
| data->raw_info_block = buf; |
| data->info = (struct mxt_info *)buf; |
| data->object_table = (struct mxt_object *)(buf + MXT_OBJECT_START); |
| |
| dev_info(&client->dev, |
| "Family: 0x%X Variant: 0x%X Firmware V%u.%u.%02X Objects: %u\n", |
| data->info->family_id, data->info->variant_id, |
| data->info->version >> 4, data->info->version & 0xf, |
| data->info->build, data->info->object_num); |
| |
| /* Parse object table information */ |
| error = mxt_parse_object_table(data); |
| if (error) { |
| dev_err(&client->dev, "Error %d reading object table\n", error); |
| mxt_free_object_table(data); |
| return error; |
| } |
| |
| if (data->T38_address) |
| data->config_id = mxt_update_config_id(data); |
| |
| error = mxt_read_revision_id(data, &revision); |
| if (!error) { |
| data->revision_id = revision; |
| dev_info(&client->dev, |
| "Revision ID: 0x%02x\n", data->revision_id); |
| } |
| |
| return 0; |
| |
| err_free_mem: |
| kfree(buf); |
| return error; |
| } |
| |
| static int mxt_read_t9_resolution(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| int error; |
| struct t9_range range; |
| unsigned char orient; |
| struct mxt_object *object; |
| |
| object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); |
| if (!object) |
| return -EINVAL; |
| |
| error = __mxt_read_reg(client, |
| object->start_address + MXT_T9_RANGE, |
| sizeof(range), &range); |
| if (error) |
| return error; |
| |
| le16_to_cpus(range.x); |
| le16_to_cpus(range.y); |
| |
| error = __mxt_read_reg(client, |
| object->start_address + MXT_T9_ORIENT, |
| 1, &orient); |
| if (error) |
| return error; |
| |
| /* Handle default values */ |
| if (range.x == 0) |
| range.x = 1023; |
| |
| if (range.y == 0) |
| range.y = 1023; |
| |
| if (orient & MXT_T9_ORIENT_SWITCH) { |
| data->max_x = range.y; |
| data->max_y = range.x; |
| } else { |
| data->max_x = range.x; |
| data->max_y = range.y; |
| } |
| |
| dev_info(&client->dev, |
| "Touchscreen size X%uY%u\n", data->max_x, data->max_y); |
| |
| return 0; |
| } |
| |
| static void mxt_regulator_enable(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| int error; |
| |
| gpio_set_value(data->pdata->gpio_reset, 0); |
| |
| error = regulator_enable(data->reg_vdd); |
| if (error) { |
| dev_err(dev, "Error %d enabling vdd regulator\n", error); |
| return; |
| } |
| |
| if (data->pdata->common_vdd_supply == 0) { |
| error = regulator_enable(data->reg_avdd); |
| if (error) { |
| regulator_disable(data->reg_vdd); |
| dev_err(dev, "Error %d enabling avdd regulator\n", |
| error); |
| return; |
| } |
| } |
| |
| msleep(MXT_WAKEUP_TIME); |
| dev_dbg(&data->client->dev, "Regulator On\n"); |
| |
| gpio_set_value(data->pdata->gpio_reset, 1); |
| mxt_wait_for_idle(data); |
| } |
| |
| static void mxt_regulator_disable(struct mxt_data *data) |
| { |
| gpio_set_value(data->pdata->gpio_reset, 0); |
| |
| regulator_disable(data->reg_vdd); |
| if (data->pdata->common_vdd_supply == 0) |
| regulator_disable(data->reg_avdd); |
| |
| dev_dbg(&data->client->dev, "Regulator Off\n"); |
| } |
| |
| static int mxt_gpio_configure(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| int error = -EINVAL; |
| struct pinctrl *pinctrl; |
| |
| pinctrl = devm_pinctrl_get_select(dev, "active"); |
| if (IS_ERR(pinctrl)) { |
| error = PTR_ERR(pinctrl); |
| dev_err(dev, "pinctrl failed err %d\n", error); |
| return error; |
| } |
| |
| /* According to maXTouch power sequencing specification, RESET line |
| * must be kept low until some time after regulators come up to |
| * voltage */ |
| if (gpio_is_valid(data->pdata->gpio_reset)) { |
| /* configure touchscreen reset out gpio */ |
| error = gpio_request(data->pdata->gpio_reset, "mxt_reset_gpio"); |
| if (error) { |
| dev_err(dev, "unable to request gpio [%u]\n", |
| data->pdata->gpio_reset); |
| goto fail; |
| } |
| |
| error = gpio_direction_output(data->pdata->gpio_reset, 0); |
| if (error) { |
| dev_err(dev, "unable to set direction for gpio [%u]\n", |
| data->pdata->gpio_reset); |
| goto fail_release_reset_gpio; |
| } |
| } else { |
| dev_err(dev, "reset gpio not provided\n"); |
| goto fail; |
| } |
| |
| if (gpio_is_valid(data->pdata->gpio_irq)) { |
| /* configure touchscreen irq gpio */ |
| error = gpio_request(data->pdata->gpio_irq, "mxt_irq_gpio"); |
| if (error) { |
| dev_err(dev, "unable to request gpio [%u]\n", |
| data->pdata->gpio_irq); |
| goto fail_release_reset_gpio; |
| } |
| error = gpio_direction_input(data->pdata->gpio_irq); |
| if (error) { |
| dev_err(dev, "unable to set direction for gpio [%u]\n", |
| data->pdata->gpio_irq); |
| goto fail_release_gpios; |
| } |
| } else { |
| dev_err(dev, "irq gpio not provided\n"); |
| goto fail_release_reset_gpio; |
| } |
| |
| return 0; |
| |
| fail_release_gpios: |
| gpio_free(data->pdata->gpio_irq); |
| fail_release_reset_gpio: |
| gpio_free(data->pdata->gpio_reset); |
| fail: |
| return error; |
| } |
| |
| static void mxt_gpio_free(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| struct pinctrl *pinctrl; |
| |
| gpio_free(data->pdata->gpio_reset); |
| gpio_free(data->pdata->gpio_irq); |
| |
| pinctrl = devm_pinctrl_get_select_default(dev); |
| if (IS_ERR(pinctrl)) |
| dev_err(dev, "pinctrl failed err %ld\n", PTR_ERR(pinctrl)); |
| } |
| |
| static int mxt_power_init(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| int error; |
| |
| #ifdef CONFIG_OF |
| data->reg_vdd = regulator_get(&data->client->dev, "touch_vdd"); |
| #else |
| data->reg_vdd = regulator_get("vdd"); |
| #endif |
| if (IS_ERR(data->reg_vdd)) { |
| error = PTR_ERR(data->reg_vdd); |
| dev_err(dev, "Error %d getting vdd regulator\n", error); |
| goto fail; |
| } |
| |
| if (data->pdata->common_vdd_supply == 0) { |
| #ifdef CONFIG_OF |
| data->reg_avdd = regulator_get( |
| &data->client->dev, "touch_avdd"); |
| #else |
| data->reg_avdd = regulator_get("avdd"); |
| #endif |
| if (IS_ERR(data->reg_avdd)) { |
| error = PTR_ERR(data->reg_avdd); |
| dev_err(dev, "Error %d avdd regulator get\n", error); |
| goto fail_release_vdd; |
| } |
| } |
| |
| return 0; |
| |
| fail_release_vdd: |
| regulator_put(data->reg_vdd); |
| fail: |
| data->reg_vdd = NULL; |
| data->reg_avdd = NULL; |
| return error; |
| } |
| |
| static int mxt_read_t100_config(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| int error; |
| struct mxt_object *object; |
| u16 range_x, range_y; |
| u8 cfg, tchaux; |
| u8 aux; |
| |
| object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100); |
| if (!object) |
| return -EINVAL; |
| |
| error = __mxt_read_reg(client, |
| object->start_address + MXT_T100_XRANGE, |
| sizeof(range_x), &range_x); |
| if (error) |
| return error; |
| |
| le16_to_cpus(range_x); |
| |
| error = __mxt_read_reg(client, |
| object->start_address + MXT_T100_YRANGE, |
| sizeof(range_y), &range_y); |
| if (error) |
| return error; |
| |
| le16_to_cpus(range_y); |
| |
| error = __mxt_read_reg(client, |
| object->start_address + MXT_T100_CFG1, |
| 1, &cfg); |
| if (error) |
| return error; |
| |
| error = __mxt_read_reg(client, |
| object->start_address + MXT_T100_TCHAUX, |
| 1, &tchaux); |
| if (error) |
| return error; |
| |
| /* Handle default values */ |
| if (range_x == 0) |
| range_x = 1023; |
| |
| if (range_y == 0) |
| range_y = 1023; |
| |
| if (cfg & MXT_T100_CFG_SWITCHXY) { |
| data->max_x = range_y; |
| data->max_y = range_x; |
| } else { |
| data->max_x = range_x; |
| data->max_y = range_y; |
| } |
| |
| /* allocate aux bytes */ |
| aux = 6; |
| |
| if (tchaux & MXT_T100_TCHAUX_VECT) |
| data->t100_aux_vect = aux++; |
| |
| if (tchaux & MXT_T100_TCHAUX_AMPL) |
| data->t100_aux_ampl = aux++; |
| |
| if (tchaux & MXT_T100_TCHAUX_AREA) |
| data->t100_aux_area = aux++; |
| |
| dev_info(&client->dev, |
| "T100 Touchscreen size X%uY%u\n", data->max_x, data->max_y); |
| |
| /* T100 object size might change, thus free allocated buffer */ |
| kfree(data->T100_data); |
| |
| /* allocate memory to keep a copy of T100 */ |
| data->T100_data = kzalloc(mxt_obj_size(object), GFP_KERNEL); |
| if (!data->T100_data) |
| dev_warn(&client->dev, "Cannot allocate T100 data buffer\n"); |
| else { |
| error = __mxt_read_reg(client, object->start_address, |
| mxt_obj_size(object), data->T100_data); |
| if (error) { |
| dev_warn(&client->dev, "T100: failed to store data\n"); |
| kfree(data->T100_data); |
| data->T100_data = NULL; |
| } else |
| dev_dbg(&client->dev, "T100: stored %d bytes\n", |
| mxt_obj_size(object)); |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_initialize_t100_input_device(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| struct input_dev *input_dev; |
| int i, error; |
| |
| error = mxt_read_t100_config(data); |
| if (error) |
| dev_warn(dev, "Failed to initialize T100 resolution\n"); |
| |
| input_dev = data->input_dev; |
| #ifdef MXT_DISTINCT_INPUT_NAME |
| input_dev->name = "Atmel maXTouch T100 Touchscreen"; |
| #endif |
| set_bit(INPUT_PROP_DIRECT, input_dev->propbit); |
| |
| /* For multi touch */ |
| input_mt_init_slots(input_dev, data->num_touchids, 0); |
| |
| if (mxt_t47_stylus_state(data)) |
| input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, |
| 0, MT_TOOL_MAX, 0, 0); |
| |
| input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
| 0, data->max_x, 0, 0); |
| input_set_abs_params(input_dev, ABS_MT_POSITION_Y, |
| 0, data->max_y, 0, 0); |
| |
| if (data->t100_aux_area) |
| input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, |
| 0, MXT_MAX_AREA, 0, 0); |
| |
| if (data->t100_aux_ampl) |
| input_set_abs_params(input_dev, ABS_MT_PRESSURE, |
| 0, MXT_MAX_PRESSURE, 0, 0); |
| |
| if (data->t100_aux_vect) |
| input_set_abs_params(input_dev, ABS_MT_ORIENTATION, |
| 0, 255, 0, 0); |
| |
| /* For T15 key array */ |
| if (data->T15_reportid_min) { |
| data->t15_keystatus = 0; |
| |
| for (i = 0; i < data->pdata->t15_num_keys; i++) |
| if (data->pdata->t15_keymap[i]) |
| input_set_capability(input_dev, EV_KEY, |
| data->pdata->t15_keymap[i]); |
| } |
| |
| input_set_capability(input_dev, EV_KEY, KEY_POWER); |
| |
| return 0; |
| } |
| |
| static int mxt_initialize_t9_input_device(struct mxt_data *data); |
| static int mxt_configure_objects(struct mxt_data *data); |
| static int mxt_apply_tdat_tsett(struct mxt_data *data); |
| static int mxt_alloc_input_device(struct mxt_data *data); |
| |
| static void mxt_request_irq(struct mxt_data *data, unsigned long flags) |
| { |
| int error; |
| |
| dev_dbg(&data->client->dev, "requesting IRQ, flags: %lu\n", flags); |
| error = request_threaded_irq(data->irq, NULL, mxt_interrupt, |
| flags, data->client->name, data); |
| /* no need to stay alive, touch is not functional */ |
| BUG_ON(error); |
| data->irq_enabled = true; |
| } |
| |
| static int mxt_initialize(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| int error, current_state = mxt_get_sensor_state(data); |
| bool alt_bootloader_addr = false; |
| bool retry = false; |
| |
| retry_info: |
| error = mxt_read_info_block(data); |
| if (error) { |
| retry_bootloader: |
| error = mxt_probe_bootloader(data, alt_bootloader_addr); |
| if (error) { |
| if (alt_bootloader_addr) { |
| /* Chip is not in appmode or bootloader mode */ |
| return error; |
| } |
| |
| dev_info(&client->dev, "Trying alternate bootloader address\n"); |
| alt_bootloader_addr = true; |
| goto retry_bootloader; |
| } else { |
| if (retry) { |
| dev_err(&client->dev, |
| "Could not recover device from " |
| "bootloader mode\n"); |
| /* this is not an error state, we can reflash |
| * from here */ |
| mxt_set_sensor_state(data, STATE_BL); |
| return 0; |
| } |
| |
| /* Attempt to exit bootloader into app mode */ |
| mxt_send_bootloader_cmd(data, false); |
| msleep(MXT_FW_RESET_TIME); |
| retry = true; |
| goto retry_info; |
| } |
| } |
| |
| error = mxt_check_retrigen(data); |
| if (error) |
| return error; |
| |
| mxt_acquire_irq(data); |
| |
| error = mxt_configure_objects(data); |
| if (error) |
| return error; |
| |
| /* Touch IC is in UI mode, re-register to level */ |
| /* triggered IRQ mode per Atmel specification */ |
| free_irq(data->irq, data); |
| mxt_request_irq(data, data->pdata->irqflags); |
| |
| mxt_set_sensor_state(data, (current_state == STATE_UNKNOWN) ? |
| STATE_STANDBY : STATE_ACTIVE); |
| return 0; |
| } |
| |
| static int mxt_configure_objects(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| int error; |
| |
| if (!data->input_dev) { |
| error = mxt_alloc_input_device(data); |
| if (error) { |
| dev_err(&client->dev, |
| "Failed to allocate input device\n"); |
| return error; |
| } |
| } |
| |
| error = mxt_debug_msg_init(data); |
| if (error) |
| return error; |
| |
| error = mxt_init_t7_power_cfg(data); |
| if (error) { |
| dev_err(&client->dev, "Failed to initialize power cfg\n"); |
| return error; |
| } |
| |
| /* Check register init values */ |
| if (data->tdat) |
| error = mxt_apply_tdat_tsett(data); |
| else |
| error = mxt_check_reg_init(data); |
| if (error) { |
| dev_err(&client->dev, "Error %d initializing configuration\n", |
| error); |
| return error; |
| } |
| |
| if (data->T9_reportid_min) { |
| error = mxt_initialize_t9_input_device(data); |
| if (error) |
| return error; |
| } else if (data->T100_reportid_min) { |
| error = mxt_initialize_t100_input_device(data); |
| if (error) |
| return error; |
| } else |
| dev_warn(&client->dev, "No touch object detected\n"); |
| |
| if (!data->in_bootloader && !data->input_registered) { |
| error = input_register_device(data->input_dev); |
| if (error) { |
| dev_err(&client->dev, |
| "Error %d registering input device\n", error); |
| return error; |
| } |
| data->input_registered = true; |
| } |
| |
| return 0; |
| } |
| |
| /* Firmware Version is returned as Major.Minor.Build */ |
| static ssize_t mxt_fw_version_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", |
| data->info->version >> 4, data->info->version & 0xf, |
| data->info->build); |
| } |
| |
| /* Hardware Version is returned as FamilyID.VariantID */ |
| static ssize_t mxt_hw_version_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| return scnprintf(buf, PAGE_SIZE, "%u.%u\n", |
| data->info->family_id, data->info->variant_id); |
| } |
| |
| /* Build Id is returned as FamilyID-ConfigID */ |
| static ssize_t mxt_buildid_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| struct mxt_info *info = data->info ? data->info : &data->pdata->dt_info; |
| return scnprintf(buf, PAGE_SIZE, "%02x%02x%02x-%08x\n", |
| info->version >> 4, |
| info->version & 0xf, |
| info->build, |
| data->config_id); |
| } |
| |
| /* Product Id returned as FamilyID */ |
| static ssize_t mxt_productinfo_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| struct mxt_info *info = data->info ? data->info : &data->pdata->dt_info; |
| return scnprintf(buf, PAGE_SIZE, "%02x%02x\n", |
| info->family_id, data->revision_id); |
| } |
| |
| static ssize_t mxt_poweron_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| return scnprintf(buf, PAGE_SIZE, "%d\n", data->poweron); |
| } |
| |
| static ssize_t mxt_ic_ver_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| struct mxt_info *info = data->info ? data->info : &data->pdata->dt_info; |
| return scnprintf(buf, PAGE_SIZE, |
| "%s%02x%02x(%02x)\n%s%02x%02x%02x\n%s%08x\n", |
| "Product ID: ", |
| info->family_id, |
| data->revision_id, |
| info->variant_id, |
| "Build ID: ", |
| info->version >> 4, |
| info->version & 0xf, |
| info->build, |
| "Config ID: ", |
| data->config_id); |
| } |
| |
| static ssize_t mxt_drv_irq_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| return scnprintf(buf, PAGE_SIZE, "%s\n", |
| data->irq_enabled ? "ENABLED" : "DISABLED"); |
| } |
| |
| static ssize_t mxt_drv_irq_store(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| unsigned long value = 0; |
| int err = 0; |
| |
| err = kstrtoul(buf, 10, &value); |
| if (err < 0) { |
| dev_err(dev, "%s: Failed to convert value.\n", __func__); |
| return -EINVAL; |
| } |
| |
| switch (value) { |
| case 0: /* Disable irq */ |
| mxt_irq_enable(data, false); |
| data->enable_reporting = false; |
| break; |
| case 1: /* Enable irq */ |
| mxt_irq_enable(data, true); |
| data->enable_reporting = true; |
| break; |
| default: |
| dev_err(dev, "%s: Invalid value\n", __func__); |
| return -EINVAL; |
| } |
| return count; |
| } |
| |
| static ssize_t mxt_hw_irqstat_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| switch (gpio_get_value(data->pdata->gpio_irq)) { |
| case 0: |
| return scnprintf(buf, PAGE_SIZE, "Low\n"); |
| case 1: |
| return scnprintf(buf, PAGE_SIZE, "High\n"); |
| default: |
| dev_err(dev, "%s: Failed to get GPIO for irq %d.\n", |
| __func__, |
| data->irq); |
| return scnprintf(buf, PAGE_SIZE, "Unknown\n"); |
| } |
| } |
| |
| static void mxt_hw_reset(struct mxt_data *data) |
| { |
| gpio_set_value(data->pdata->gpio_reset, 0); |
| udelay(1500); |
| gpio_set_value(data->pdata->gpio_reset, 1); |
| |
| mxt_wait_for_idle(data); |
| mxt_acquire_irq(data); |
| } |
| |
| static ssize_t mxt_reset_store(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| unsigned int reset; |
| struct mxt_data *data = dev_get_drvdata(dev); |
| |
| if (sscanf(buf, "%u", &reset) != 1) |
| return -EINVAL; |
| |
| if (reset != 1) |
| return -EINVAL; |
| |
| if (atomic_read(&data->suspended)) |
| mxt_resume(&data->client->dev); |
| else { |
| data->enable_reporting = false; |
| mxt_hw_reset(data); |
| data->enable_reporting = true; |
| } |
| |
| return count; |
| } |
| |
| static ssize_t mxt_show_instance(char *buf, int count, |
| struct mxt_object *object, int instance, |
| const u8 *val) |
| { |
| int i; |
| |
| if (mxt_obj_instances(object) > 1) |
| count += scnprintf(buf + count, PAGE_SIZE - count, |
| "Instance %u\n", instance); |
| |
| for (i = 0; i < mxt_obj_size(object); i++) |
| count += scnprintf(buf + count, PAGE_SIZE - count, |
| "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); |
| count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); |
| |
| return count; |
| } |
| |
| static ssize_t mxt_object_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| struct mxt_object *object; |
| int count = 0; |
| int i, j; |
| int error; |
| u8 *obuf; |
| |
| /* Pre-allocate buffer large enough to hold max sized object. */ |
| obuf = kmalloc(256, GFP_KERNEL); |
| if (!obuf) |
| return -ENOMEM; |
| |
| error = 0; |
| for (i = 0; i < data->info->object_num; i++) { |
| object = data->object_table + i; |
| |
| if (!mxt_object_readable(object->type)) |
| continue; |
| |
| count += scnprintf(buf + count, PAGE_SIZE - count, |
| "T%u:\n", object->type); |
| |
| for (j = 0; j < mxt_obj_instances(object); j++) { |
| u16 size = mxt_obj_size(object); |
| u16 addr = object->start_address + j * size; |
| |
| error = __mxt_read_reg(data->client, addr, size, obuf); |
| if (error) |
| goto done; |
| |
| count = mxt_show_instance(buf, count, object, j, obuf); |
| } |
| } |
| |
| done: |
| kfree(obuf); |
| return error ?: count; |
| } |
| |
| static int mxt_check_firmware_format(struct device *dev, |
| const struct firmware *fw) |
| { |
| unsigned int pos = 0; |
| char c; |
| |
| while (pos < fw->size) { |
| c = *(fw->data + pos); |
| |
| if (c < '0' || (c > '9' && c < 'A') || c > 'F') |
| return 0; |
| |
| pos++; |
| } |
| |
| /* To convert file try |
| * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw */ |
| dev_err(dev, "Aborting: firmware file must be in binary format\n"); |
| |
| return -EINVAL; |
| } |
| |
| static int mxt_load_fw(struct device *dev) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| const struct firmware *fw = NULL; |
| unsigned int frame_size; |
| unsigned int pos = 0; |
| unsigned int retry = 0; |
| unsigned int frame = 0; |
| int ret; |
| |
| ret = request_firmware(&fw, data->fw_name, dev); |
| if (ret) { |
| dev_err(dev, "Unable to open firmware %s\n", data->fw_name); |
| return ret; |
| } |
| |
| /* Check for incorrect enc file */ |
| ret = mxt_check_firmware_format(dev, fw); |
| if (ret) |
| goto release_firmware; |
| |
| if (atomic_read(&data->suspended)) |
| mxt_resume(&data->client->dev); |
| |
| if (!data->in_bootloader) { |
| mxt_irq_enable(data, false); |
| |
| /* Change to the bootloader mode */ |
| ret = mxt_t6_command(data, MXT_COMMAND_RESET, |
| MXT_BOOT_VALUE, false); |
| if (ret) |
| goto release_firmware; |
| |
| msleep(MXT_RESET_TIME); |
| |
| /* At this stage, do not need to scan since we know |
| * family ID */ |
| ret = mxt_lookup_bootloader_address(data, 0); |
| if (ret) |
| goto release_firmware; |
| |
| mxt_irq_enable(data, true); |
| } |
| |
| mxt_set_sensor_state(data, STATE_INIT); |
| mxt_free_object_table(data); |
| |
| ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); |
| if (ret) { |
| /* Bootloader may still be unlocked from previous update |
| * attempt */ |
| ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false); |
| if (ret) |
| goto release_firmware; |
| } else { |
| dev_info(dev, "Unlocking bootloader\n"); |
| /* Unlock bootloader */ |
| ret = mxt_send_bootloader_cmd(data, true); |
| if (ret) |
| goto release_firmware; |
| } |
| |
| mxt_set_sensor_state(data, STATE_FLASH); |
| while (pos < fw->size) { |
| ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); |
| if (ret) |
| goto release_firmware; |
| |
| frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); |
| |
| /* Take account of CRC bytes */ |
| frame_size += 2; |
| |
| /* Write one frame to device */ |
| ret = mxt_bootloader_write(data, fw->data + pos, frame_size); |
| if (ret) |
| goto release_firmware; |
| |
| ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); |
| if (ret) { |
| retry++; |
| |
| /* Back off by 20ms per retry */ |
| msleep(retry * 20); |
| |
| if (retry > 20) { |
| dev_err(dev, "Retry count exceeded\n"); |
| goto release_firmware; |
| } |
| } else { |
| retry = 0; |
| pos += frame_size; |
| frame++; |
| } |
| |
| if (frame % 50 == 0) |
| dev_info(dev, "Sent %d frames, %d/%zd bytes\n", |
| frame, pos, fw->size); |
| } |
| |
| dev_info(dev, "Sent %d frames, %zd bytes\n", frame, pos); |
| INIT_COMPLETION(data->bl_completion); |
| /* Wait for flash. */ |
| ret = mxt_wait_for_completion(data, &data->bl_completion, |
| MXT_FW_RESET_TIME); |
| if (ret) |
| goto release_firmware; |
| |
| /* Wait for device to reset. Some bootloader versions do not assert |
| * the CHG line after bootloading has finished, so ignore error */ |
| mxt_wait_for_completion(data, &data->bl_completion, |
| MXT_FW_RESET_TIME); |
| |
| release_firmware: |
| release_firmware(fw); |
| return ret; |
| } |
| |
| static int mxt_update_file_name(struct device *dev, char **file_name, |
| const char *buf, size_t count) |
| { |
| char *file_name_tmp; |
| |
| /* Simple sanity check */ |
| if (count > 64) { |
| dev_warn(dev, "File name too long\n"); |
| return -EINVAL; |
| } |
| |
| file_name_tmp = krealloc(*file_name, count + 1, GFP_KERNEL); |
| if (!file_name_tmp) { |
| dev_warn(dev, "no memory\n"); |
| return -ENOMEM; |
| } |
| |
| *file_name = file_name_tmp; |
| memcpy(*file_name, buf, count); |
| |
| /* Echo into the sysfs entry may append newline at the end of buf */ |
| if (buf[count - 1] == '\n') |
| (*file_name)[count - 1] = '\0'; |
| else |
| (*file_name)[count] = '\0'; |
| |
| return 0; |
| } |
| |
| static ssize_t mxt_update_fw_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| int error; |
| |
| error = mxt_update_file_name(dev, &data->fw_name, buf, count); |
| if (error) |
| return error; |
| |
| error = mxt_load_fw(dev); |
| if (error) { |
| dev_err(dev, "The firmware update failed(%d)\n", error); |
| count = error; |
| } else { |
| dev_info(dev, "The firmware update succeeded\n"); |
| |
| mxt_set_sensor_state(data, STATE_QUERY); |
| |
| error = mxt_initialize(data); |
| if (error) |
| return error; |
| } |
| |
| return count; |
| } |
| |
| static ssize_t mxt_update_cfg_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| int ret; |
| |
| if (data->in_bootloader) { |
| dev_err(dev, "Not in appmode\n"); |
| return -EINVAL; |
| } |
| |
| ret = mxt_update_file_name(dev, &data->cfg_name, buf, count); |
| if (ret) |
| return ret; |
| |
| data->enable_reporting = false; |
| mxt_free_input_device(data); |
| |
| if (atomic_read(&data->suspended)) |
| mxt_resume(&data->client->dev); |
| |
| ret = mxt_configure_objects(data); |
| if (ret) |
| goto out; |
| |
| ret = count; |
| out: |
| return ret; |
| } |
| |
| static ssize_t mxt_debug_enable_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| char c; |
| |
| c = data->debug_enabled ? '1' : '0'; |
| return scnprintf(buf, PAGE_SIZE, "%c\n", c); |
| } |
| |
| static ssize_t mxt_debug_notify_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| return scnprintf(buf, PAGE_SIZE, "0\n"); |
| } |
| |
| static ssize_t mxt_debug_v2_enable_store(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| int i; |
| |
| if (sscanf(buf, "%u", &i) == 1 && i < 2) { |
| if (i == 1) |
| mxt_debug_msg_enable(data); |
| else |
| mxt_debug_msg_disable(data); |
| |
| return count; |
| } else { |
| dev_dbg(dev, "debug_enabled write error\n"); |
| return -EINVAL; |
| } |
| } |
| |
| static ssize_t mxt_debug_enable_store(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| int i; |
| |
| if (sscanf(buf, "%u", &i) == 1 && i < 2) { |
| data->debug_enabled = (i == 1); |
| |
| dev_dbg(dev, "%s\n", i ? "debug enabled" : "debug disabled"); |
| return count; |
| } else { |
| dev_dbg(dev, "debug_enabled write error\n"); |
| return -EINVAL; |
| } |
| } |
| |
| static int mxt_check_mem_access_params(struct mxt_data *data, loff_t off, |
| size_t *count) |
| { |
| if (off >= data->mem_size) |
| return -EIO; |
| |
| if (off + *count > data->mem_size) |
| *count = data->mem_size - off; |
| |
| if (*count > MXT_MAX_BLOCK_WRITE) |
| *count = MXT_MAX_BLOCK_WRITE; |
| |
| return 0; |
| } |
| |
| static ssize_t mxt_mem_access_read(struct file *filp, struct kobject *kobj, |
| struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) |
| { |
| struct device *dev = container_of(kobj, struct device, kobj); |
| struct mxt_data *data = dev_get_drvdata(dev); |
| int ret = 0; |
| |
| ret = mxt_check_mem_access_params(data, off, &count); |
| if (ret < 0) |
| return ret; |
| |
| if (count > 0) |
| ret = __mxt_read_reg(data->client, off, count, buf); |
| |
| return ret == 0 ? count : ret; |
| } |
| |
| static ssize_t mxt_mem_access_write(struct file *filp, struct kobject *kobj, |
| struct bin_attribute *bin_attr, char *buf, loff_t off, |
| size_t count) |
| { |
| struct device *dev = container_of(kobj, struct device, kobj); |
| struct mxt_data *data = dev_get_drvdata(dev); |
| int ret = 0; |
| |
| ret = mxt_check_mem_access_params(data, off, &count); |
| if (ret < 0) |
| return ret; |
| |
| if (count > 0) |
| ret = __mxt_write_reg(data->client, off, count, buf); |
| |
| return ret == 0 ? count : 0; |
| } |
| |
| static int mxt_apply_tdat_tsett(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| struct mxt_object *object; |
| int ret = 0; |
| int offset = 0; |
| int byte_offset; |
| int cfg_start_ofs; |
| u8 *config_mem; |
| size_t config_mem_size; |
| const unsigned char *cfg_data, *obj_data; |
| unsigned int type, instance, size; |
| u16 reg; |
| |
| pr_info("Applying TDAT settings\n"); |
| |
| /* Alloc memory to store configuration */ |
| cfg_start_ofs = MXT_OBJECT_START |
| + data->info->object_num * sizeof(struct mxt_object) |
| + MXT_INFO_CHECKSUM_SIZE; |
| config_mem_size = data->mem_size - cfg_start_ofs; |
| config_mem = kzalloc(config_mem_size, GFP_KERNEL); |
| if (!config_mem) { |
| dev_err(dev, "Failed to allocate memory\n"); |
| ret = -ENOMEM; |
| goto just_leave; |
| } |
| dev_dbg(dev, "Config memory: size %u, start_ofs %u\n", |
| config_mem_size, cfg_start_ofs); |
| cfg_data = data->tsett.data; |
| while (offset < data->tsett.size) { |
| /* Read type, instance, length */ |
| type = (cfg_data[offset+1] << 8) | cfg_data[offset]; |
| instance = cfg_data[offset+2]; |
| size = (cfg_data[offset+4] << 8) | cfg_data[offset+3]; |
| obj_data = &cfg_data[offset+5]; |
| |
| dev_dbg(dev, "T%u, instance: %u, size: %u, Tsett-offset: %d\n", |
| type, instance, size, offset); |
| offset += size + 5; |
| |
| object = mxt_get_object(data, type); |
| if (!object) |
| continue; |
| |
| if (size > mxt_obj_size(object)) { |
| /* Either we are in fallback mode due to wrong |
| * config or config from a later fw version, |
| * or the file is corrupt or hand-edited */ |
| dev_warn(dev, "Discarding %u byte(s) in T%u\n", |
| size - mxt_obj_size(object), type); |
| } else if (mxt_obj_size(object) > size) { |
| /* If firmware is upgraded, new bytes may be added to |
| * end of objects. It is generally forward compatible |
| * to zero these bytes - previous behaviour will be |
| * retained. However this does invalidate the CRC and |
| * will force fallback mode until the configuration is |
| * updated. We warn here but do nothing else - the |
| * malloc has zeroed the entire configuration. */ |
| dev_warn(dev, "Zeroing %u byte(s) in T%d\n", |
| mxt_obj_size(object) - size, type); |
| } |
| |
| if (instance >= mxt_obj_instances(object)) { |
| dev_err(dev, "Object instances exceeded!\n"); |
| ret = -EINVAL; |
| goto release_mem; |
| } |
| |
| /* config data address in registers memory map */ |
| reg = object->start_address + mxt_obj_size(object) * instance; |
| dev_dbg(dev, "T%u address: %u, instance[%u] data offset %u\n", |
| type, object->start_address, |
| instance, mxt_obj_size(object) * instance); |
| |
| /* copy new config data to config memory buffer */ |
| memcpy(config_mem + reg - cfg_start_ofs, obj_data, size); |
| dev_dbg(dev, "Copied %u bytes at offset %u\n", |
| size, (unsigned)(reg - cfg_start_ofs)); |
| } |
| |
| /* calculate crc of the received configs (not the raw config file) */ |
| if (data->T7_address < cfg_start_ofs) { |
| dev_err(dev, "Bad T7 address, T7addr = %x, config offset %x\n", |
| data->T7_address, cfg_start_ofs); |
| goto release_mem; |
| } |
| |
| /* Write configuration as blocks */ |
| byte_offset = 0; |
| while (byte_offset < config_mem_size) { |
| size = config_mem_size - byte_offset; |
| |
| if (size > MXT_MAX_BLOCK_WRITE) |
| size = MXT_MAX_BLOCK_WRITE; |
| |
| dev_dbg(dev, "Writing config chunk size %u, at address %u\n", |
| size, cfg_start_ofs + byte_offset); |
| |
| ret = __mxt_write_reg(data->client, |
| cfg_start_ofs + byte_offset, |
| size, config_mem + byte_offset); |
| if (ret != 0) { |
| dev_err(dev, "Config write error, ret=%d\n", ret); |
| goto release_mem; |
| } |
| |
| byte_offset += size; |
| } |
| |
| mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
| |
| ret = mxt_check_retrigen(data); |
| if (ret) |
| goto release_mem; |
| |
| mxt_soft_reset(data); |
| dev_info(dev, "Config written\n"); |
| |
| /* T7 config may have changed */ |
| mxt_init_t7_power_cfg(data); |
| |
| /* T38 may have changed */ |
| if (data->T38_address) |
| data->config_id = mxt_update_config_id(data); |
| |
| release_mem: |
| kfree(config_mem); |
| just_leave: |
| return ret; |
| } |
| |
| static bool forcereflash; |
| static ssize_t mxt_forcereflash_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned int input; |
| |
| if (sscanf(buf, "%u", &input) != 1) |
| return -EINVAL; |
| |
| if (input != 1) |
| return -EINVAL; |
| |
| forcereflash = true; |
| |
| return count; |
| } |
| |
| static bool mxt_check_tdat_format(const unsigned char *image) |
| { |
| return image[0] == 0x31; |
| } |
| |
| static int mxt_get_tdat_config_id(const unsigned char *data, size_t size, |
| u32 *config_id, u8 *revision) |
| { |
| unsigned short id; |
| int error = -EINVAL; |
| size_t length, offset; |
| |
| for (offset = 0; offset < size; offset += length+5) { |
| id = (data[offset+1] << 8) | data[offset]; |
| length = (data[offset+4] << 8) | data[offset+3]; |
| if (id == MXT_SPT_USERDATA_T38) { |
| *config_id = be32_to_cpu( |
| *(unsigned int *)&data[offset+5]); |
| *revision = data[offset+9]; |
| error = 0; |
| break; |
| } |
| } |
| return error; |
| } |
| |
| static int mxt_parse_tdat_image(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| u32 firmware_id; |
| u8 *section, id; |
| size_t ii, length, offset, header_sz, raw_size = data->tdat->size; |
| const u8 *raw_image = data->tdat->data; |
| int error; |
| u32 config_id = 0; |
| u8 revision_id = 0; |
| |
| pr_info("Start TDAT image processing\n"); |
| |
| for (ii = 0, offset = 1; offset < raw_size; offset += length+4) { |
| length = (raw_image[offset+3] << 16) | |
| (raw_image[offset+2] << 8) | raw_image[offset+1]; |
| |
| dev_dbg(dev, "Record[%d]: length %u, offset %u\n", |
| ii++, length, offset); |
| |
| if ((offset+length+4) > raw_size) { |
| dev_err(dev, "Data overflow at offset %u (%u)\n", |
| offset, raw_image[offset]); |
| return -EINVAL; |
| } |
| } |
| |
| if (offset != raw_size) { |
| dev_err(dev, "Data is misaligned\n"); |
| return -EINVAL; |
| } |
| |
| for (offset = 1; offset < raw_size; offset += length+4) { |
| /* byte 0 - section id */ |
| /* byte 1-3 - section length */ |
| /* byte 4-... - section data */ |
| id = raw_image[offset]; |
| length = (raw_image[offset+3] << 16) | |
| (raw_image[offset+2] << 8) | raw_image[offset+1]; |
| section = (u8 *)&raw_image[offset+4]; |
| dev_dbg(dev, "Section [%u], size %u\n", id, length); |
| |
| switch (id) { |
| case 1: /* config */ |
| error = mxt_get_tdat_config_id(section, length, |
| &config_id, &revision_id); |
| if (error) |
| return -EINVAL; |
| |
| pr_info("TDAT: Config ID %x, revision 0x%02x\n", |
| config_id, revision_id); |
| data->tsett.data = section; |
| data->tsett.size = length; |
| break; |
| |
| case 2: /* firmware */ |
| firmware_id = be32_to_cpu( |
| *(unsigned int *)(§ion[1])); |
| pr_info("TDAT: FW build ID %x\n", firmware_id); |
| |
| /* skip section header */ |
| header_sz = section[0] + 1; |
| data->fw.data = section + header_sz; |
| data->fw.size = length - header_sz; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| if (revision_id != data->revision_id) { |
| dev_err(dev, "Incorrect firmware (revision id %x <-> %x\n", |
| revision_id, data->revision_id); |
| return -EINVAL; |
| } |
| |
| if ((config_id <= data->config_id) && !forcereflash) { |
| dev_err(dev, "Firmware upgrade is not required\n"); |
| return -EINVAL; |
| } |
| |
| data->config_id = config_id; |
| data->firmware_id = firmware_id; |
| data->revision_id = revision_id; |
| |
| return 0; |
| } |
| |
| static ssize_t mxt_doreflash_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| unsigned int frame_size; |
| unsigned int pos = 0; |
| unsigned int retry = 0; |
| unsigned int frame = 0; |
| int error; |
| |
| error = mxt_update_file_name(dev, &data->fw_name, buf, count); |
| if (error) |
| return error; |
| |
| pr_info("TDAT file name: %s\n", data->fw_name); |
| |
| error = request_firmware(&data->tdat, data->fw_name, dev); |
| if (error) { |
| dev_err(dev, "Unable to load firmware %s\n", data->fw_name); |
| return error; |
| } |
| |
| if (mxt_check_tdat_format(data->tdat->data)) { |
| error = mxt_parse_tdat_image(data); |
| if (error) |
| goto release_firmware; |
| forcereflash = false; |
| } else { |
| dev_err(dev, "invalid TDAT format\n"); |
| goto release_firmware; |
| } |
| |
| mxt_lock(&data->crit_section_lock); |
| |
| mxt_irq_enable(data, false); |
| |
| if (!data->in_bootloader) { |
| dev_dbg(dev, "Reboot to bootloader\n\n"); |
| /* Change to the bootloader mode */ |
| error = mxt_t6_command(data, MXT_COMMAND_RESET, |
| MXT_BOOT_VALUE, false); |
| if (error) |
| goto release_firmware; |
| |
| msleep(MXT_RESET_TIME); |
| |
| /* At this stage, no need to scan since family ID is known */ |
| error = mxt_lookup_bootloader_address(data, 0); |
| if (error) |
| goto release_firmware; |
| |
| /* Level triggered IRQ causes WD reset due to soft IRQ */ |
| /* lockup, thus change to edge for the duration of flash */ |
| free_irq(data->irq, data); |
| mxt_request_irq(data, IRQF_TRIGGER_FALLING | IRQF_ONESHOT); |
| } else |
| mxt_irq_enable(data, true); |
| |
| mxt_set_sensor_state(data, STATE_INIT); |
| |
| mxt_free_object_table(data); |
| |
| dev_dbg(dev, "confirming bootloader mode\n"); |
| error = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); |
| if (error) { |
| error = mxt_check_bootloader(data, |
| MXT_WAITING_FRAME_DATA, false); |
| if (error) |
| goto flash_error; |
| } else { |
| dev_info(dev, "Unlocking bootloader\n"); |
| /* Unlock bootloader */ |
| error = mxt_send_bootloader_cmd(data, true); |
| if (error) |
| goto flash_error; |
| } |
| |
| dev_dbg(dev, "start flashing frames\n"); |
| mxt_set_sensor_state(data, STATE_FLASH); |
| while (pos < data->fw.size) { |
| error = mxt_check_bootloader(data, |
| MXT_WAITING_FRAME_DATA, true); |
| if (error) |
| goto flash_error; |
| |
| frame_size = ((*(data->fw.data + pos) << 8) | |
| *(data->fw.data + pos + 1)); |
| /* Take account of CRC bytes */ |
| frame_size += 2; |
| |
| /* Write one frame to device */ |
| error = mxt_bootloader_write(data, |
| data->fw.data + pos, frame_size); |
| if (error) |
| goto flash_error; |
| |
| error = mxt_check_bootloader(data, |
| MXT_FRAME_CRC_PASS, true); |
| if (error) { |
| retry++; |
| msleep(retry * 20); |
| if (retry > 20) { |
| dev_err(dev, "Retry count exceeded\n"); |
| goto flash_error; |
| } |
| } else { |
| retry = 0; |
| pos += frame_size; |
| frame++; |
| } |
| |
| if (frame % 50 == 0) |
| dev_info(dev, "Sent %d frames, %u/%u bytes\n", |
| frame, pos, data->fw.size); |
| } |
| |
| dev_info(dev, "FW: sent %d frames, %u bytes\n", frame, pos); |
| INIT_COMPLETION(data->bl_completion); |
| error = mxt_wait_for_completion(data, &data->bl_completion, |
| MXT_FW_RESET_TIME); |
| if (error) |
| goto flash_error; |
| |
| dev_info(dev, "The firmware update succeeded\n"); |
| goto initialize; |
| |
| flash_error: |
| mxt_soft_reset(data); |
| |
| initialize: |
| mxt_set_sensor_state(data, STATE_QUERY); |
| error = mxt_initialize(data); |
| if (error) { |
| mxt_set_sensor_state(data, STATE_BL); |
| dev_info(dev, "Init failed after firmware upgrade\n"); |
| } |
| |
| mxt_unlock(&data->crit_section_lock); |
| |
| memset(&data->fw, 0, sizeof(data->fw)); |
| memset(&data->tsett, 0, sizeof(data->tsett)); |
| |
| release_firmware: |
| release_firmware(data->tdat); |
| data->tdat = NULL; |
| return count; |
| } |
| |
| static ssize_t mxt_flashprog_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| return scnprintf(buf, PAGE_SIZE, "%d", data->in_bootloader); |
| } |
| |
| enum wakeup_modes { |
| WAKEUP_OFF = 0, |
| WAKEUP_ON, |
| WAKEUP_AUTO |
| }; |
| |
| static u8 tsp_mode; |
| static char *wakeup_mode_names[] = { "OFF", "ON", "AUTO" }; |
| |
| static char const *mxt_wakeup_mode_name(int mode) |
| { |
| int index = mode < 0 || mode > WAKEUP_AUTO ? WAKEUP_OFF : mode; |
| return wakeup_mode_names[index]; |
| } |
| |
| static ssize_t mxt_tsp_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct mxt_data *mxt_dev_data = dev_get_drvdata(dev); |
| int state, mode; |
| |
| state = mxt_get_sensor_state(mxt_dev_data); |
| |
| pr_debug("state: %s(%d), suspend flag: %d, BL flag: %d\n", |
| mxt_state_name(state), state, |
| atomic_read(&mxt_dev_data->suspended), |
| mxt_dev_data->in_bootloader); |
| |
| if (!strncmp(buf, "on", 2) || !strncmp(buf, "ON", 2)) |
| mode = WAKEUP_ON; |
| else if (!strncmp(buf, "auto", 4) || !strncmp(buf, "AUTO", 4)) |
| mode = WAKEUP_AUTO; |
| else if (!strncmp(buf, "off", 2) || !strncmp(buf, "OFF", 2)) |
| mode = WAKEUP_OFF; |
| else |
| return -EINVAL; |
| |
| if (mode == tsp_mode) |
| return count; |
| |
| tsp_mode = mode; |
| |
| switch (mode) { |
| case WAKEUP_AUTO: |
| mxt_set_alternate_mode(mxt_dev_data, |
| mxt_dev_data->alternate_mode, true, true); |
| break; |
| case WAKEUP_ON: |
| mxt_set_alternate_mode(mxt_dev_data, |
| mxt_dev_data->alternate_mode, true, false); |
| break; |
| case WAKEUP_OFF: |
| mxt_restore_default_mode(mxt_dev_data); |
| break; |
| } |
| |
| dev_dbg(&mxt_dev_data->client->dev, "TAP: %s\n", |
| mxt_wakeup_mode_name(tsp_mode)); |
| return count; |
| } |
| |
| static ssize_t mxt_tsp_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| return scnprintf(buf, PAGE_SIZE, "%s\n", |
| mxt_wakeup_mode_name(tsp_mode)); |
| } |
| |
| static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
| static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); |
| static DEVICE_ATTR(buildid, S_IRUGO, mxt_buildid_show, NULL); |
| static DEVICE_ATTR(productinfo, S_IRUGO, mxt_productinfo_show, NULL); |
| static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
| static DEVICE_ATTR(poweron, S_IRUGO, mxt_poweron_show, NULL); |
| static DEVICE_ATTR(ic_ver, S_IRUGO, mxt_ic_ver_show, NULL); |
| static DEVICE_ATTR(flashprog, S_IRUGO, mxt_flashprog_show, NULL); |
| static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); |
| static DEVICE_ATTR(update_cfg, S_IWUSR, NULL, mxt_update_cfg_store); |
| static DEVICE_ATTR(doreflash, S_IWUSR, NULL, mxt_doreflash_store); |
| static DEVICE_ATTR(forcereflash, S_IWUSR, NULL, mxt_forcereflash_store); |
| static DEVICE_ATTR(hw_irqstat, S_IRUGO, mxt_hw_irqstat_show, NULL); |
| static DEVICE_ATTR(reset, S_IWUSR | S_IWGRP, NULL, mxt_reset_store); |
| static DEVICE_ATTR(drv_irq, S_IRUGO | S_IWUSR | S_IWGRP, |
| mxt_drv_irq_show, mxt_drv_irq_store); |
| static DEVICE_ATTR(debug_v2_enable, S_IWUSR | S_IRUSR, NULL, |
| mxt_debug_v2_enable_store); |
| static DEVICE_ATTR(debug_notify, S_IRUGO, mxt_debug_notify_show, NULL); |
| static DEVICE_ATTR(debug_enable, S_IWUSR | S_IRUSR, mxt_debug_enable_show, |
| mxt_debug_enable_store); |
| static DEVICE_ATTR(tsi, S_IRUGO, mxt_ud_show, NULL); |
| static DEVICE_ATTR(tsp, S_IWUSR | S_IWGRP | S_IRUGO, |
| mxt_tsp_show, mxt_tsp_store); |
| |
| static struct attribute *mxt_attrs[] = { |
| &dev_attr_fw_version.attr, |
| &dev_attr_hw_version.attr, |
| &dev_attr_object.attr, |
| &dev_attr_update_fw.attr, |
| &dev_attr_update_cfg.attr, |
| &dev_attr_ic_ver.attr, |
| &dev_attr_doreflash.attr, |
| &dev_attr_flashprog.attr, |
| &dev_attr_buildid.attr, |
| &dev_attr_productinfo.attr, |
| &dev_attr_poweron.attr, |
| &dev_attr_forcereflash.attr, |
| &dev_attr_drv_irq.attr, |
| &dev_attr_hw_irqstat.attr, |
| &dev_attr_reset.attr, |
| &dev_attr_debug_enable.attr, |
| &dev_attr_debug_v2_enable.attr, |
| &dev_attr_debug_notify.attr, |
| &dev_attr_tsi.attr, |
| &dev_attr_tsp.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group mxt_attr_group = { |
| .attrs = mxt_attrs, |
| }; |
| |
| static void mxt_reset_slots(struct mxt_data *data) |
| { |
| struct input_dev *input_dev = data->input_dev; |
| unsigned int num_mt_slots; |
| int id; |
| |
| if (data->buttons_enabled) |
| data->t15_keystatus = 0; |
| |
| if (!input_dev) |
| return; |
| |
| num_mt_slots = data->num_touchids + data->num_stylusids; |
| |
| for (id = 0; id < num_mt_slots; id++) { |
| input_mt_slot(input_dev, id); |
| input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); |
| } |
| |
| mxt_input_sync(input_dev); |
| } |
| |
| #ifndef CONFIG_FB |
| static int mxt_input_open(struct input_dev *dev) |
| { |
| struct mxt_data *data = input_get_drvdata(dev); |
| |
| mxt_irq_enable(data, true); |
| |
| if (data->use_regulator) { |
| mxt_regulator_enable(data); |
| mxt_acquire_irq(data); |
| } else if (!data->in_bootloader) |
| mxt_hw_reset(hw); |
| |
| mxt_unlock(&data->crit_section_lock); |
| |
| return 0; |
| } |
| |
| static void mxt_input_close(struct input_dev *dev) |
| { |
| struct mxt_data *data = input_get_drvdata(dev); |
| |
| mxt_reset_slots(data); |
| mxt_irq_enable(data, false); |
| |
| if (data->use_regulator) |
| mxt_regulator_disable(data); |
| |
| mxt_lock(&data->crit_section_lock); |
| } |
| #endif |
| |
| #ifdef CONFIG_OF |
| int mxt_dt_parse_state(struct mxt_data *data, struct device_node *np_config, |
| struct mxt_patch *state) |
| { |
| const char *patch_data; |
| struct device_node *np_state; |
| int err; |
| |
| np_state = of_node_get(np_config); |
| err = of_property_read_string(np_config, "patch-data", |
| (const char **)&patch_data); |
| if (err < 0) { |
| pr_err("unable to read patch-data\n"); |
| return err; |
| } |
| |
| pr_debug("processing state: %s\n", patch_data); |
| mxt_parse_setup_string(data, patch_data, state); |
| |
| return 0; |
| } |
| |
| int mxt_dt_parse_mode(struct mxt_data *data, const char *mode_name, |
| struct mxt_patchset *mode) |
| { |
| struct device *dev = &data->client->dev; |
| struct device_node *np = dev->of_node; |
| struct device_node *np_modes; |
| int ret; |
| char *propname; |
| struct property *prop; |
| const __be32 *list; |
| int size, config; |
| phandle phandle; |
| struct device_node *np_config; |
| |
| np_modes = of_find_node_by_name(np, "touchstate_modes"); |
| if (!np_modes) { |
| pr_err("can't find touchstate modes node\n"); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| pr_debug("processing mode %s\n", mode_name); |
| propname = kasprintf(GFP_KERNEL, "touchmode-%s", mode_name); |
| prop = of_find_property(np_modes, propname, &size); |
| kfree(propname); |
| of_node_put(np_modes); |
| if (!prop) { |
| pr_err("can't find mode %s\n", mode_name); |
| ret = -EINVAL; |
| goto err; |
| } |
| list = prop->value; |
| size /= sizeof(*list); |
| |
| if (size > MAX_NUM_STATES) { |
| pr_err("unexpected number of states %d\n", size); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| for (config = 0; config < size; config++) { |
| phandle = be32_to_cpup(list++); |
| |
| /* Look up the touchstate configuration node */ |
| np_config = of_find_node_by_phandle(phandle); |
| if (!np_config) { |
| dev_err(dev, |
| "prop %s index %i invalid phandle\n", |
| prop->name, config); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| /* Parse the node */ |
| ret = mxt_dt_parse_state(data, np_config, |
| &mode->patch_data[config]); |
| of_node_put(np_config); |
| if (ret < 0) |
| goto err; |
| } |
| err: |
| return ret; |
| } |
| |
| static int mxt_parse_dt(struct mxt_data *data) |
| { |
| unsigned resolution[2], key_codes[MXT_MAX_BUTTONS]; |
| struct device *dev = &data->client->dev; |
| struct mxt_platform_data *pdata = data->pdata; |
| int error = 0; |
| u32 value; |
| struct device_node *config, *np = dev->of_node; |
| |
| error = mxt_dt_parse_mode(data, "default", data->default_mode); |
| if (error) { |
| pr_err("failed to load default mode\n"); |
| goto exit_parser; |
| } |
| |
| error = mxt_dt_parse_mode(data, "alternate", data->alternate_mode); |
| if (error) { |
| pr_warn("alternate mode not found; using default instead\n"); |
| data->alternate_mode = data->default_mode; |
| } |
| |
| pdata->common_vdd_supply = of_property_read_bool(np, |
| "atmel,common-vdd-supply"); |
| data->use_regulator = of_property_read_bool(np, |
| "atmel,suspend-power-off"); |
| if (data->use_regulator) |
| pr_info("using suspend method: power off\n"); |
| |
| error = of_property_read_u32_array(np, "atmel,panel-resolution", |
| resolution, 2); |
| if (!error) { |
| pdata->res.x_max = resolution[0]; |
| pdata->res.y_max = resolution[1]; |
| pr_debug("panel resolution X%d,Y%d\n", |
| pdata->res.x_max, pdata->res.y_max); |
| } |
| |
| /* reset, irq gpio info */ |
| pdata->gpio_irq = of_get_gpio(np, 0); |
| pdata->gpio_reset = of_get_gpio(np, 1); |
| |
| /* defaults in case DTS is not populated */ |
| pdata->dt_info.family_id = 0xa4; |
| pdata->dt_info.variant_id = 0x2; |
| pdata->dt_info.version = 0x5; |
| pdata->dt_info.build = 0x2; |
| |
| memset(key_codes, 0, sizeof(key_codes)); |
| error = of_property_read_u32_array(np, "atmel,key-buttons", |
| key_codes, MXT_MAX_BUTTONS); |
| if (!error) { |
| int i, keys; |
| |
| pdata->t15_num_keys = MXT_MAX_BUTTONS; |
| pdata->t15_keymap = devm_kzalloc(dev, |
| sizeof(unsigned) * pdata->t15_num_keys, GFP_KERNEL); |
| if (!pdata->t15_keymap) { |
| dev_err(dev, "T15 keymap allocation failure\n"); |
| goto exit_parser; |
| } |
| |
| for (i = 0, keys = 0; i < pdata->t15_num_keys; i++) |
| if (key_codes[i]) { |
| *(pdata->t15_keymap + i) = key_codes[i]; |
| keys++; |
| } |
| |
| data->buttons_enabled = true; |
| pr_info("T15 has %d buttons\n", keys); |
| } |
| |
| config = of_find_node_by_name(np, "atmel,cfg"); |
| if (!config) { |
| dev_err(dev, "can't find default config node\n"); |
| error = -EINVAL; |
| goto exit_parser; |
| } |
| |
| error = of_property_read_u32(config, "atmel,family-id", &value); |
| if (error) { |
| dev_err(dev, "Unable to read family id\n"); |
| goto exit_parser; |
| } |
| pdata->dt_info.family_id = (u8)value; |
| |
| error = of_property_read_u32(config, "atmel,variant-id", &value); |
| if (error) { |
| dev_err(dev, "Unable to read variant id\n"); |
| goto exit_parser; |
| } |
| pdata->dt_info.variant_id = (u8)value; |
| |
| error = of_property_read_u32(config, "atmel,version", &value); |
| if (error) { |
| dev_err(dev, "Unable to read controller version\n"); |
| goto exit_parser; |
| } |
| pdata->dt_info.version = (u8)value; |
| |
| error = of_property_read_u32(config, "atmel,build", &value); |
| if (error) { |
| dev_err(dev, "Unable to read build id\n"); |
| goto exit_parser; |
| } |
| pdata->dt_info.build = (u8)value; |
| |
| error = of_property_read_u32(config, "atmel,revision-id", &value); |
| if (error) { |
| dev_err(dev, "Unable to read revision id\n"); |
| goto exit_parser; |
| } |
| data->revision_id = (u8)value; |
| |
| exit_parser: |
| if (!error) |
| dev_dbg(dev, "DT parsed successfully\n"); |
| return 0; |
| } |
| #else |
| static int mxt_parse_dt(struct device *dev, struct mxt_platform_data *pdata) |
| { |
| return -ENODEV; |
| } |
| #endif |
| |
| static int mxt_handle_pdata(struct mxt_data *data) |
| { |
| int error; |
| data->pdata = dev_get_platdata(&data->client->dev); |
| |
| /* Use provided platform data if present */ |
| if (data->pdata) { |
| if (data->pdata->cfg_name) |
| mxt_update_file_name(&data->client->dev, |
| &data->cfg_name, |
| data->pdata->cfg_name, |
| strlen(data->pdata->cfg_name)); |
| return 0; |
| } |
| |
| data->pdata = kzalloc(sizeof(*data->pdata), GFP_KERNEL); |
| if (!data->pdata) { |
| dev_err(&data->client->dev, "Failed to allocate pdata\n"); |
| return -ENOMEM; |
| } |
| |
| /* Set default parameters */ |
| data->pdata->irqflags = IRQF_TRIGGER_LOW | IRQF_ONESHOT; |
| |
| if (data->client->dev.of_node) { |
| error = mxt_parse_dt(data); |
| if (error) |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_initialize_t9_input_device(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| const struct mxt_platform_data *pdata = data->pdata; |
| struct input_dev *input_dev; |
| int error; |
| unsigned int num_mt_slots; |
| int i; |
| |
| error = mxt_read_t9_resolution(data); |
| if (error) |
| dev_warn(dev, "Failed to initialize T9 resolution\n"); |
| |
| input_dev = data->input_dev; |
| #ifdef MXT_DISTINCT_INPUT_NAME |
| input_dev->name = "Atmel maXTouch T9 Touchscreen"; |
| #endif |
| if (pdata->t19_num_keys) { |
| __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); |
| |
| for (i = 0; i < pdata->t19_num_keys; i++) |
| if (pdata->t19_keymap[i] != KEY_RESERVED) |
| input_set_capability(input_dev, EV_KEY, |
| pdata->t19_keymap[i]); |
| |
| input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); |
| input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); |
| input_abs_set_res(input_dev, ABS_MT_POSITION_X, |
| MXT_PIXELS_PER_MM); |
| input_abs_set_res(input_dev, ABS_MT_POSITION_Y, |
| MXT_PIXELS_PER_MM); |
| #ifdef MXT_DISTINCT_INPUT_NAME |
| input_dev->name = "Atmel maXTouch Touchpad"; |
| #endif |
| } else |
| set_bit(INPUT_PROP_DIRECT, input_dev->propbit); |
| |
| |
| /* For single touch */ |
| input_set_abs_params(input_dev, ABS_X, |
| 0, data->max_x, 0, 0); |
| input_set_abs_params(input_dev, ABS_Y, |
| 0, data->max_y, 0, 0); |
| input_set_abs_params(input_dev, ABS_PRESSURE, |
| 0, 255, 0, 0); |
| |
| /* For multi touch */ |
| num_mt_slots = data->num_touchids + data->num_stylusids; |
| input_mt_init_slots(input_dev, num_mt_slots, 0); |
| |
| input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, |
| 0, MXT_MAX_AREA, 0, 0); |
| input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
| 0, data->max_x, 0, 0); |
| input_set_abs_params(input_dev, ABS_MT_POSITION_Y, |
| 0, data->max_y, 0, 0); |
| input_set_abs_params(input_dev, ABS_MT_PRESSURE, |
| 0, 255, 0, 0); |
| input_set_abs_params(input_dev, ABS_MT_ORIENTATION, |
| 0, 255, 0, 0); |
| |
| /* For T63 active stylus */ |
| if (data->T63_reportid_min) { |
| input_set_capability(input_dev, EV_KEY, BTN_STYLUS); |
| input_set_capability(input_dev, EV_KEY, BTN_STYLUS2); |
| input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, |
| 0, MT_TOOL_MAX, 0, 0); |
| } |
| |
| /* For T15 key array */ |
| if (data->T15_reportid_min) { |
| data->t15_keystatus = 0; |
| |
| for (i = 0; i < data->pdata->t15_num_keys; i++) |
| input_set_capability(input_dev, EV_KEY, |
| data->pdata->t15_keymap[i]); |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_alloc_input_device(struct mxt_data *data) |
| { |
| data->input_dev = input_allocate_device(); |
| if (IS_ERR_OR_NULL(data->input_dev)) |
| return -ENOMEM; |
| |
| #ifndef MXT_DISTINCT_INPUT_NAME |
| data->input_dev->name = DRIVER_NAME; |
| #endif |
| data->input_dev->id.bustype = BUS_I2C; |
| data->input_dev->dev.parent = &data->client->dev; |
| #ifndef CONFIG_FB |
| input_dev->open = mxt_input_open; |
| input_dev->close = mxt_input_close; |
| #endif |
| set_bit(EV_SYN, data->input_dev->evbit); |
| set_bit(EV_ABS, data->input_dev->evbit); |
| |
| input_set_drvdata(data->input_dev, data); |
| |
| return 0; |
| } |
| |
| static int mxt_init_mode(struct mxt_data *data, struct mxt_patchset **pmode) |
| { |
| int i; |
| struct mxt_patchset *mode = *pmode = |
| kzalloc(sizeof(struct mxt_patchset), GFP_KERNEL); |
| if (!mode) |
| return -ENOMEM; |
| |
| mode->patch_num = MAX_NUM_STATES; |
| mode->patch_data = kzalloc(sizeof(struct mxt_patch) * |
| mode->patch_num, GFP_KERNEL); |
| if (!mode->patch_data) { |
| kfree(mode); |
| return -ENOMEM; |
| } |
| |
| for (i = 0; i < mode->patch_num; i++) |
| INIT_LIST_HEAD(&mode->patch_data[i].cfg_head); |
| return 0; |
| } |
| |
| static int mxt_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| struct mxt_data *data; |
| int error; |
| |
| data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); |
| if (!data) { |
| dev_err(&client->dev, "Failed to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
| client->adapter->nr, client->addr); |
| |
| data->client = client; |
| data->irq = client->irq; |
| i2c_set_clientdata(client, data); |
| |
| mxt_init_mode(data, &data->default_mode); |
| mxt_init_mode(data, &data->alternate_mode); |
| |
| error = mxt_handle_pdata(data); |
| if (error) |
| goto err_free_mem; |
| |
| data->current_mode = data->default_mode; |
| |
| init_completion(&data->bl_completion); |
| init_completion(&data->reset_completion); |
| init_completion(&data->crc_completion); |
| mutex_init(&data->debug_msg_lock); |
| |
| atomic_set(&data->suspended, 0); |
| data->poweron = true; |
| |
| error = mxt_gpio_configure(data); |
| if (error) |
| goto err_free_pdata; |
| |
| /* Handle power up in edge triggered IRQ mode */ |
| mxt_request_irq(data, IRQF_TRIGGER_FALLING | IRQF_ONESHOT); |
| |
| error = mxt_power_init(data); |
| if (error) |
| goto err_free_irq; |
| |
| mxt_regulator_enable(data); |
| |
| error = mxt_initialize(data); |
| if (error) |
| goto err_disable_reg; |
| |
| sema_init(&data->crit_section_lock, 1); |
| |
| #ifdef CONFIG_FB |
| data->fb_notif.notifier_call = fb_notifier_callback; |
| error = fb_register_client(&data->fb_notif); |
| if (error) |
| dev_err(&client->dev, "Error registering fb_notifier: %d\n", |
| error); |
| INIT_WORK(&data->resume_work, mxt_queued_resume); |
| #endif |
| error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
| if (error) { |
| dev_err(&client->dev, "Failure %d creating sysfs group\n", |
| error); |
| goto err_free_object; |
| } |
| |
| sysfs_bin_attr_init(&data->mem_access_attr); |
| data->mem_access_attr.attr.name = "mem_access"; |
| data->mem_access_attr.attr.mode = S_IRUGO | S_IWUSR | S_IWGRP; |
| data->mem_access_attr.read = mxt_mem_access_read; |
| data->mem_access_attr.write = mxt_mem_access_write; |
| data->mem_access_attr.size = data->mem_size; |
| |
| if (sysfs_create_bin_file(&client->dev.kobj, |
| &data->mem_access_attr) < 0) { |
| dev_err(&client->dev, "Failed to create %s\n", |
| data->mem_access_attr.attr.name); |
| goto err_remove_sysfs_group; |
| } |
| |
| data->mem_access_created = true; |
| data->mode_is_persistent = true; |
| |
| return 0; |
| |
| err_remove_sysfs_group: |
| sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
| err_free_object: |
| mxt_free_object_table(data); |
| err_disable_reg: |
| mxt_regulator_disable(data); |
| err_free_irq: |
| free_irq(data->irq, data); |
| mxt_gpio_free(data); |
| err_free_pdata: |
| if (!dev_get_platdata(&data->client->dev)) |
| kfree(data->pdata); |
| err_free_mem: |
| kfree(data); |
| return error; |
| } |
| |
| static int mxt_remove(struct i2c_client *client) |
| { |
| struct mxt_data *data = i2c_get_clientdata(client); |
| |
| if (data->mem_access_created) |
| sysfs_remove_bin_file(&client->dev.kobj, |
| &data->mem_access_attr); |
| |
| sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
| free_irq(data->irq, data); |
| regulator_put(data->reg_avdd); |
| if (data->pdata->common_vdd_supply == 0) |
| regulator_put(data->reg_vdd); |
| mxt_gpio_free(data); |
| mxt_free_object_table(data); |
| if (!dev_get_platdata(&data->client->dev)) |
| kfree(data->pdata); |
| kfree(data); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM |
| static int mxt_suspend(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct mxt_data *data = i2c_get_clientdata(client); |
| static char ud_stats[PAGE_SIZE]; |
| |
| if (atomic_cmpxchg(&data->suspended, 0, 1) == 0) { |
| mxt_lock(&data->crit_section_lock); |
| |
| mxt_set_sensor_state(data, STATE_SUSPEND); |
| mxt_reset_slots(data); |
| |
| if (data->use_regulator) |
| mxt_regulator_disable(data); |
| } |
| |
| data->poweron = false; |
| |
| mxt_ud_stat(ud_stats, sizeof(ud_stats)); |
| pr_info("%s\n", ud_stats); |
| |
| return 0; |
| } |
| |
| static int mxt_resume(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct mxt_data *data = i2c_get_clientdata(client); |
| int state = mxt_get_sensor_state(data); |
| |
| if (atomic_cmpxchg(&data->suspended, 1, 0) == 1) { |
| if (data->use_regulator) { |
| mxt_regulator_enable(data); |
| mxt_acquire_irq(data); |
| } else if (!data->in_bootloader) |
| mxt_hw_reset(data); |
| |
| mxt_unlock(&data->crit_section_lock); |
| } |
| |
| if (data->in_bootloader) |
| state = (state == STATE_INIT || |
| state == STATE_FLASH) ? state : STATE_BL; |
| else |
| state = STATE_ACTIVE; |
| |
| data->poweron = true; |
| mxt_set_sensor_state(data, state); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_FB |
| static void mxt_queued_resume(struct work_struct *w) |
| { |
| struct mxt_data *mxt_dev_data = |
| container_of(w, struct mxt_data, resume_work); |
| mxt_resume(&mxt_dev_data->client->dev); |
| dev_dbg(&mxt_dev_data->client->dev, "DISPLAY-ON\n"); |
| } |
| |
| static int fb_notifier_callback(struct notifier_block *self, |
| unsigned long event, void *data) |
| { |
| struct fb_event *evdata = data; |
| int *blank; |
| struct mxt_data *mxt_dev_data = |
| container_of(self, struct mxt_data, fb_notif); |
| |
| if (evdata && evdata->data && event == FB_EVENT_BLANK && mxt_dev_data && |
| mxt_dev_data->client) { |
| blank = evdata->data; |
| if (*blank == FB_BLANK_UNBLANK || |
| (*blank == FB_BLANK_VSYNC_SUSPEND && |
| atomic_read(&mxt_dev_data->suspended))) { |
| queue_work(system_wq, &mxt_dev_data->resume_work); |
| dev_dbg(&mxt_dev_data->client->dev, "queued RESUME\n"); |
| } else if (*blank == FB_BLANK_POWERDOWN) { |
| /* ensure no work left in queue */ |
| cancel_work_sync(&mxt_dev_data->resume_work); |
| |
| mxt_suspend(&mxt_dev_data->client->dev); |
| dev_dbg(&mxt_dev_data->client->dev, "DISPLAY-OFF\n"); |
| } |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| static const struct dev_pm_ops mxt_pm_ops = { |
| #if !defined(CONFIG_FB) |
| .suspend = mxt_suspend, |
| .resume = mxt_resume, |
| #endif |
| }; |
| #endif |
| |
| static void mxt_shutdown(struct i2c_client *client) |
| { |
| struct mxt_data *data = i2c_get_clientdata(client); |
| |
| disable_irq(data->irq); |
| } |
| |
| static const struct i2c_device_id mxt_id[] = { |
| { "qt602240_ts", 0 }, |
| { "atmel_mxt_ts", 0 }, |
| { "atmel_mxt_tp", 0 }, |
| { "mXT224", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, mxt_id); |
| |
| #ifdef CONFIG_OF |
| static struct of_device_id mxt_match_table[] = { |
| { .compatible = "atmel,mxt-ts",}, |
| { }, |
| }; |
| #else |
| #define mxt_match_table NULL |
| #endif |
| |
| static struct i2c_driver mxt_driver = { |
| .driver = { |
| .name = DRIVER_NAME, |
| .owner = THIS_MODULE, |
| .of_match_table = mxt_match_table, |
| #ifdef CONFIG_PM |
| .pm = &mxt_pm_ops, |
| #endif |
| }, |
| .probe = mxt_probe, |
| .remove = mxt_remove, |
| .shutdown = mxt_shutdown, |
| .id_table = mxt_id, |
| }; |
| |
| module_i2c_driver(mxt_driver); |
| |
| /* Module information */ |
| MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); |
| MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
| MODULE_LICENSE("GPL"); |