| /* drivers/input/touchscreen/goodix_tool.c |
| * |
| * 2010 - 2012 Goodix Technology. |
| * |
| * 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. |
| * |
| * This program is distributed in the hope that it will be a reference |
| * to you, when you are integrating the GOODiX's CTP IC into your system, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * Version:1.2 |
| * V1.0:2012/05/01,create file. |
| * V1.2:2012/06/08,modify some warning. |
| * V1.4:2012/08/28,modified to support GT9XX |
| * |
| */ |
| |
| #include <linux/i2c/gt9xx.h> |
| |
| /* #define IC_TYPE_NAME "GT813" */ |
| #define DATA_LENGTH_UINT 512 |
| #define CMD_HEAD_LENGTH (sizeof(struct st_cmd_head) - sizeof(u8 *)) |
| #define GOODIX_ENTRY_NAME "goodix_tool" |
| |
| #pragma pack(1) |
| struct st_cmd_head { |
| u8 wr; /* write read flag 0:R 1:W 2:PID 3: */ |
| u8 flag; /* 0:no need flag/int |
| 1: need flag 2:need int */ |
| u8 flag_addr[2]; /* flag address */ |
| u8 flag_val; /* flag val */ |
| u8 flag_relation; /* flag_val:flag 0:not equal 1:equal 2:> 3:< */ |
| u16 circle; /* polling cycle */ |
| u8 times; /* plling times */ |
| u8 retry; /* I2C retry times */ |
| u16 delay; /* delay befor read or after write */ |
| u16 data_len; /* data length */ |
| u8 addr_len; /* address length */ |
| u8 addr[2]; /* address */ |
| u8 res[3]; /* reserved */ |
| u8 *data; /* data pointer */ |
| }; |
| #pragma pack() |
| struct st_cmd_head cmd_head; |
| |
| static struct i2c_client *gt_client; |
| |
| static struct proc_dir_entry *goodix_proc_entry; |
| |
| static s32 goodix_tool_write(struct file *filp, const char __user *buff, |
| unsigned long len, void *data); |
| static s32 goodix_tool_read(char *page, char **start, off_t off, int count, |
| int *eof, void *data); |
| static s32(*tool_i2c_read) (u8 *, u16); |
| static s32(*tool_i2c_write) (u8 *, u16); |
| |
| s32 DATA_LENGTH; |
| s8 IC_TYPE[16] = { 0 }; |
| |
| static s32 tool_i2c_read_no_extra(u8 *buf, u16 len) |
| { |
| s32 ret = -1; |
| s32 i = 0; |
| struct i2c_msg msgs[2]; |
| |
| msgs[0].flags = !I2C_M_RD; |
| msgs[0].addr = gt_client->addr; |
| msgs[0].len = cmd_head.addr_len; |
| msgs[0].buf = &buf[0]; |
| |
| msgs[1].flags = I2C_M_RD; |
| msgs[1].addr = gt_client->addr; |
| msgs[1].len = len; |
| msgs[1].buf = &buf[GTP_ADDR_LENGTH]; |
| |
| for (i = 0; i < cmd_head.retry; i++) { |
| ret = i2c_transfer(gt_client->adapter, msgs, 2); |
| if (ret > 0) |
| break; |
| } |
| return ret; |
| } |
| |
| static s32 tool_i2c_write_no_extra(u8 *buf, u16 len) |
| { |
| s32 ret = -1; |
| s32 i = 0; |
| struct i2c_msg msg; |
| |
| msg.flags = !I2C_M_RD; |
| msg.addr = gt_client->addr; |
| msg.len = len; |
| msg.buf = buf; |
| |
| for (i = 0; i < cmd_head.retry; i++) { |
| ret = i2c_transfer(gt_client->adapter, &msg, 1); |
| if (ret > 0) |
| break; |
| } |
| return ret; |
| } |
| |
| static s32 tool_i2c_read_with_extra(u8 *buf, u16 len) |
| { |
| s32 ret = -1; |
| u8 pre[2] = { 0x0f, 0xff }; |
| u8 end[2] = { 0x80, 0x00 }; |
| |
| tool_i2c_write_no_extra(pre, 2); |
| ret = tool_i2c_read_no_extra(buf, len); |
| tool_i2c_write_no_extra(end, 2); |
| |
| return ret; |
| } |
| |
| static s32 tool_i2c_write_with_extra(u8 *buf, u16 len) |
| { |
| s32 ret = -1; |
| u8 pre[2] = { 0x0f, 0xff }; |
| u8 end[2] = { 0x80, 0x00 }; |
| |
| tool_i2c_write_no_extra(pre, 2); |
| ret = tool_i2c_write_no_extra(buf, len); |
| tool_i2c_write_no_extra(end, 2); |
| |
| return ret; |
| } |
| |
| static void register_i2c_func(void) |
| { |
| /*if (!strncmp(IC_TYPE, "GT818", 5) || !strncmp(IC_TYPE, "GT816", 5) */ |
| /* || !strncmp(IC_TYPE, "GT811", 5) || !strncmp(IC_TYPE, "GT818F", 6) */ |
| /* || !strncmp(IC_TYPE, "GT827", 5) || !strncmp(IC_TYPE,"GT828", 5) */ |
| /* || !strncmp(IC_TYPE, "GT813", 5)) */ |
| if (strncmp(IC_TYPE, "GT8110", 6) && strncmp(IC_TYPE, "GT8105", 6) |
| && strncmp(IC_TYPE, "GT801", 5) && strncmp(IC_TYPE, "GT800", 5) |
| && strncmp(IC_TYPE, "GT801PLUS", 9) && strncmp(IC_TYPE, "GT811", 5) |
| && strncmp(IC_TYPE, "GTxxx", 5)) { |
| tool_i2c_read = tool_i2c_read_with_extra; |
| tool_i2c_write = tool_i2c_write_with_extra; |
| GTP_DEBUG("I2C function: with pre and end cmd!"); |
| } else { |
| tool_i2c_read = tool_i2c_read_no_extra; |
| tool_i2c_write = tool_i2c_write_no_extra; |
| GTP_INFO("I2C function: without pre and end cmd!"); |
| } |
| } |
| |
| static void unregister_i2c_func(void) |
| { |
| tool_i2c_read = NULL; |
| tool_i2c_write = NULL; |
| GTP_INFO("I2C function: unregister i2c transfer function!"); |
| } |
| |
| s32 init_wr_node(struct i2c_client *client) |
| { |
| s32 i; |
| |
| gt_client = client; |
| memset(&cmd_head, 0, sizeof(cmd_head)); |
| cmd_head.data = NULL; |
| |
| i = 5; |
| while ((!cmd_head.data) && i) { |
| cmd_head.data = kzalloc(i * DATA_LENGTH_UINT, GFP_KERNEL); |
| if (NULL != cmd_head.data) |
| break; |
| i--; |
| } |
| if (i) { |
| DATA_LENGTH = i * DATA_LENGTH_UINT + GTP_ADDR_LENGTH; |
| GTP_INFO("Applied memory size:%d.", DATA_LENGTH); |
| } else { |
| GTP_ERROR("Apply for memory failed."); |
| return FAIL; |
| } |
| |
| cmd_head.addr_len = 2; |
| cmd_head.retry = 5; |
| |
| register_i2c_func(); |
| |
| goodix_proc_entry = create_proc_entry(GOODIX_ENTRY_NAME, 0666, NULL); |
| if (goodix_proc_entry == NULL) { |
| GTP_ERROR("Couldn't create proc entry!"); |
| return FAIL; |
| } else { |
| GTP_INFO("Create proc entry success!"); |
| goodix_proc_entry->write_proc = goodix_tool_write; |
| goodix_proc_entry->read_proc = goodix_tool_read; |
| } |
| |
| return SUCCESS; |
| } |
| |
| void uninit_wr_node(void) |
| { |
| kfree(cmd_head.data); |
| cmd_head.data = NULL; |
| unregister_i2c_func(); |
| remove_proc_entry(GOODIX_ENTRY_NAME, NULL); |
| } |
| |
| static u8 relation(u8 src, u8 dst, u8 rlt) |
| { |
| u8 ret = 0; |
| |
| switch (rlt) { |
| case 0: |
| ret = (src != dst) ? true : false; |
| break; |
| |
| case 1: |
| ret = (src == dst) ? true : false; |
| GTP_DEBUG("equal:src:0x%02x dst:0x%02x ret:%d.", src, dst, |
| (s32) ret); |
| break; |
| |
| case 2: |
| ret = (src > dst) ? true : false; |
| break; |
| |
| case 3: |
| ret = (src < dst) ? true : false; |
| break; |
| |
| case 4: |
| ret = (src & dst) ? true : false; |
| break; |
| |
| case 5: |
| ret = (!(src | dst)) ? true : false; |
| break; |
| |
| default: |
| ret = false; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| /******************************************************* |
| Function: |
| Comfirm function. |
| Input: |
| None. |
| Output: |
| Return write length. |
| ********************************************************/ |
| static u8 comfirm(void) |
| { |
| s32 i = 0; |
| u8 buf[32]; |
| |
| /* memcpy(&buf[GTP_ADDR_LENGTH - cmd_head.addr_len], |
| &cmd_head.flag_addr, cmd_head.addr_len); */ |
| /* memcpy(buf, &cmd_head.flag_addr, cmd_head.addr_len); |
| //Modified by Scott, 2012-02-17 */ |
| memcpy(buf, cmd_head.flag_addr, cmd_head.addr_len); |
| |
| for (i = 0; i < cmd_head.times; i++) { |
| if (tool_i2c_read(buf, 1) <= 0) { |
| GTP_ERROR("Read flag data failed!"); |
| return FAIL; |
| } |
| if (true == |
| relation(buf[GTP_ADDR_LENGTH], cmd_head.flag_val, |
| cmd_head.flag_relation)) { |
| GTP_DEBUG("value at flag addr:0x%02x.", |
| buf[GTP_ADDR_LENGTH]); |
| GTP_DEBUG("flag value:0x%02x.", cmd_head.flag_val); |
| break; |
| } |
| |
| msleep(cmd_head.circle); |
| } |
| |
| if (i >= cmd_head.times) { |
| GTP_ERROR("Didn't get the flag to continue!"); |
| return FAIL; |
| } |
| |
| return SUCCESS; |
| } |
| |
| /******************************************************* |
| Function: |
| Goodix tool write function. |
| Input: |
| standard proc write function param. |
| Output: |
| Return write length. |
| ********************************************************/ |
| static s32 goodix_tool_write(struct file *filp, const char __user *buff, |
| unsigned long len, void *data) |
| { |
| s32 ret = 0; |
| GTP_DEBUG_FUNC(); |
| GTP_DEBUG_ARRAY((u8 *)buff, len); |
| |
| ret = copy_from_user(&cmd_head, buff, CMD_HEAD_LENGTH); |
| if (ret) |
| GTP_ERROR("copy_from_user failed."); |
| |
| GTP_DEBUG("wr :0x%02x.", cmd_head.wr); |
| GTP_DEBUG("flag:0x%02x.", cmd_head.flag); |
| GTP_DEBUG("flag addr:0x%02x%02x.", cmd_head.flag_addr[0], |
| cmd_head.flag_addr[1]); |
| GTP_DEBUG("flag val:0x%02x.", cmd_head.flag_val); |
| GTP_DEBUG("flag rel:0x%02x.", cmd_head.flag_relation); |
| GTP_DEBUG("circle :%d.", (s32) cmd_head.circle); |
| GTP_DEBUG("times :%d.", (s32) cmd_head.times); |
| GTP_DEBUG("retry :%d.", (s32) cmd_head.retry); |
| GTP_DEBUG("delay :%d.", (s32) cmd_head.delay); |
| GTP_DEBUG("data len:%d.", (s32) cmd_head.data_len); |
| GTP_DEBUG("addr len:%d.", (s32) cmd_head.addr_len); |
| GTP_DEBUG("addr:0x%02x%02x.", cmd_head.addr[0], cmd_head.addr[1]); |
| GTP_DEBUG("len:%d.", (s32) len); |
| GTP_DEBUG("buf[20]:0x%02x.", buff[CMD_HEAD_LENGTH]); |
| |
| if (1 == cmd_head.wr) { |
| /*copy_from_user(&cmd_head.data[cmd_head.addr_len], |
| &buff[CMD_HEAD_LENGTH], cmd_head.data_len); */ |
| ret = |
| copy_from_user(&cmd_head.data[GTP_ADDR_LENGTH], |
| &buff[CMD_HEAD_LENGTH], cmd_head.data_len); |
| if (ret) |
| GTP_ERROR("copy_from_user failed."); |
| memcpy(&cmd_head.data[GTP_ADDR_LENGTH - cmd_head.addr_len], |
| cmd_head.addr, cmd_head.addr_len); |
| |
| GTP_DEBUG_ARRAY(cmd_head.data, |
| cmd_head.data_len + cmd_head.addr_len); |
| GTP_DEBUG_ARRAY((u8 *)&buff[CMD_HEAD_LENGTH], |
| cmd_head.data_len); |
| |
| if (1 == cmd_head.flag) { |
| if (FAIL == comfirm()) { |
| GTP_ERROR("[WRITE]Comfirm fail!"); |
| return FAIL; |
| } |
| } else if (2 == cmd_head.flag) { |
| /* Need interrupt! */ |
| } |
| if (tool_i2c_write |
| (&cmd_head.data[GTP_ADDR_LENGTH - cmd_head.addr_len], |
| cmd_head.data_len + cmd_head.addr_len) <= 0) { |
| GTP_ERROR("[WRITE]Write data failed!"); |
| return FAIL; |
| } |
| |
| GTP_DEBUG_ARRAY(&cmd_head. |
| data[GTP_ADDR_LENGTH - cmd_head.addr_len], |
| cmd_head.data_len + cmd_head.addr_len); |
| if (cmd_head.delay) |
| msleep(cmd_head.delay); |
| |
| return cmd_head.data_len + CMD_HEAD_LENGTH; |
| } else if (3 == cmd_head.wr) { /* Write ic type */ |
| ret = |
| copy_from_user(&cmd_head.data[0], &buff[CMD_HEAD_LENGTH], |
| cmd_head.data_len); |
| if (ret) |
| GTP_ERROR("copy_from_user failed."); |
| memcpy(IC_TYPE, cmd_head.data, cmd_head.data_len); |
| |
| register_i2c_func(); |
| |
| return cmd_head.data_len + CMD_HEAD_LENGTH; |
| } else if (5 == cmd_head.wr) { |
| /* memcpy(IC_TYPE, cmd_head.data, cmd_head.data_len); */ |
| |
| return cmd_head.data_len + CMD_HEAD_LENGTH; |
| } else if (7 == cmd_head.wr) { /* disable irq! */ |
| gtp_irq_disable(i2c_get_clientdata(gt_client)); |
| |
| return CMD_HEAD_LENGTH; |
| } else if (9 == cmd_head.wr) { /* enable irq! */ |
| gtp_irq_enable(i2c_get_clientdata(gt_client)); |
| |
| return CMD_HEAD_LENGTH; |
| } else if (17 == cmd_head.wr) { |
| struct goodix_ts_data *ts = i2c_get_clientdata(gt_client); |
| ret = |
| copy_from_user(&cmd_head.data[GTP_ADDR_LENGTH], |
| &buff[CMD_HEAD_LENGTH], cmd_head.data_len); |
| if (ret) |
| GTP_DEBUG("copy_from_user failed."); |
| if (cmd_head.data[GTP_ADDR_LENGTH]) { |
| GTP_DEBUG("gtp enter rawdiff."); |
| ts->gtp_rawdiff_mode = true; |
| } else { |
| ts->gtp_rawdiff_mode = false; |
| GTP_DEBUG("gtp leave rawdiff."); |
| } |
| return CMD_HEAD_LENGTH; |
| } |
| #ifdef UPDATE_FUNCTIONS |
| else if (11 == cmd_head.wr) { /* Enter update mode! */ |
| if (FAIL == gup_enter_update_mode(gt_client)) |
| return FAIL; |
| } else if (13 == cmd_head.wr) { /* Leave update mode! */ |
| gup_leave_update_mode(); |
| } else if (15 == cmd_head.wr) { /* Update firmware! */ |
| show_len = 0; |
| total_len = 0; |
| memset(cmd_head.data, 0, cmd_head.data_len + 1); |
| memcpy(cmd_head.data, &buff[CMD_HEAD_LENGTH], |
| cmd_head.data_len); |
| |
| if (FAIL == gup_update_proc((void *)cmd_head.data)) |
| return FAIL; |
| } |
| #endif |
| |
| return CMD_HEAD_LENGTH; |
| } |
| |
| /******************************************************* |
| Function: |
| Goodix tool read function. |
| Input: |
| standard proc read function param. |
| Output: |
| Return read length. |
| ********************************************************/ |
| static s32 goodix_tool_read(char *page, char **start, off_t off, int count, |
| int *eof, void *data) |
| { |
| GTP_DEBUG_FUNC(); |
| |
| if (cmd_head.wr % 2) { |
| return FAIL; |
| } else if (!cmd_head.wr) { |
| u16 len = 0; |
| s16 data_len = 0; |
| u16 loc = 0; |
| |
| if (1 == cmd_head.flag) { |
| if (FAIL == comfirm()) { |
| GTP_ERROR("[READ]Comfirm fail!"); |
| return FAIL; |
| } |
| } else if (2 == cmd_head.flag) { |
| /* Need interrupt! */ |
| } |
| |
| memcpy(cmd_head.data, cmd_head.addr, cmd_head.addr_len); |
| |
| GTP_DEBUG("[CMD HEAD DATA] ADDR:0x%02x%02x.", cmd_head.data[0], |
| cmd_head.data[1]); |
| GTP_DEBUG("[CMD HEAD ADDR] ADDR:0x%02x%02x.", cmd_head.addr[0], |
| cmd_head.addr[1]); |
| |
| if (cmd_head.delay) |
| msleep(cmd_head.delay); |
| |
| data_len = cmd_head.data_len; |
| while (data_len > 0) { |
| if (data_len > DATA_LENGTH) |
| len = DATA_LENGTH; |
| else |
| len = data_len; |
| data_len -= DATA_LENGTH; |
| |
| if (tool_i2c_read(cmd_head.data, len) <= 0) { |
| GTP_ERROR("[READ]Read data failed!"); |
| return FAIL; |
| } |
| memcpy(&page[loc], &cmd_head.data[GTP_ADDR_LENGTH], |
| len); |
| loc += len; |
| |
| GTP_DEBUG_ARRAY(&cmd_head.data[GTP_ADDR_LENGTH], len); |
| GTP_DEBUG_ARRAY(page, len); |
| } |
| } else if (2 == cmd_head.wr) { |
| /* memcpy(page, "gt8", cmd_head.data_len); |
| memcpy(page, "GT818", 5); |
| page[5] = 0; |
| */ |
| |
| GTP_DEBUG("Return ic type:%s len:%d.", page, |
| (s32) cmd_head.data_len); |
| return cmd_head.data_len; |
| /* return sizeof(IC_TYPE_NAME); */ |
| } else if (4 == cmd_head.wr) { |
| page[0] = show_len >> 8; |
| page[1] = show_len & 0xff; |
| page[2] = total_len >> 8; |
| page[3] = total_len & 0xff; |
| |
| return cmd_head.data_len; |
| } else if (6 == cmd_head.wr) { |
| /* Read error code! */ |
| } else if (8 == cmd_head.wr) {/* Read driver version */ |
| /* memcpy(page, GTP_DRIVER_VERSION, |
| strlen(GTP_DRIVER_VERSION)); */ |
| |
| s32 tmp_len; |
| tmp_len = strlen(GTP_DRIVER_VERSION); |
| memcpy(page, GTP_DRIVER_VERSION, tmp_len); |
| page[tmp_len] = 0; |
| } |
| |
| return cmd_head.data_len; |
| } |