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/* linux/arch/arm/mach-msm/board-sapphire-mmc.c
* Copyright (C) 2007-2009 HTC Corporation.
* Author: Thomas Tsai <thomas_tsai@htc.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* 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.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/err.h>
#include <linux/debugfs.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <asm/mach-types.h>
#include <mach/vreg.h>
#include <mach/htc_pwrsink.h>
#include <asm/mach/mmc.h>
#include "devices.h"
#include "gpio_chip.h"
#include "board-sapphire.h"
#include "proc_comm.h"
#define DEBUG_SDSLOT_VDD 0
extern int msm_add_sdcc(unsigned int controller, struct mmc_platform_data *plat,
unsigned int stat_irq, unsigned long stat_irq_flags);
/* ---- COMMON ---- */
static void config_gpio_table(uint32_t *table, int len)
{
int n;
unsigned id;
for (n = 0; n < len; n++) {
id = table[n];
msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &id, 0);
}
}
/* ---- SDCARD ---- */
static uint32_t sdcard_on_gpio_table[] = {
PCOM_GPIO_CFG(62, 2, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
PCOM_GPIO_CFG(63, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
PCOM_GPIO_CFG(64, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* DAT3 */
PCOM_GPIO_CFG(65, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* DAT2 */
PCOM_GPIO_CFG(66, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
PCOM_GPIO_CFG(67, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT0 */
};
static uint32_t sdcard_off_gpio_table[] = {
PCOM_GPIO_CFG(62, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CLK */
PCOM_GPIO_CFG(63, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CMD */
PCOM_GPIO_CFG(64, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT3 */
PCOM_GPIO_CFG(65, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT2 */
PCOM_GPIO_CFG(66, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT1 */
PCOM_GPIO_CFG(67, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT0 */
};
static uint opt_disable_sdcard;
static int __init sapphire_disablesdcard_setup(char *str)
{
int cal = simple_strtol(str, NULL, 0);
opt_disable_sdcard = cal;
return 1;
}
__setup("board_sapphire.disable_sdcard=", sapphire_disablesdcard_setup);
static struct vreg *vreg_sdslot; /* SD slot power */
struct mmc_vdd_xlat {
int mask;
int level;
};
static struct mmc_vdd_xlat mmc_vdd_table[] = {
{ MMC_VDD_165_195, 1800 },
{ MMC_VDD_20_21, 2050 },
{ MMC_VDD_21_22, 2150 },
{ MMC_VDD_22_23, 2250 },
{ MMC_VDD_23_24, 2350 },
{ MMC_VDD_24_25, 2450 },
{ MMC_VDD_25_26, 2550 },
{ MMC_VDD_26_27, 2650 },
{ MMC_VDD_27_28, 2750 },
{ MMC_VDD_28_29, 2850 },
{ MMC_VDD_29_30, 2950 },
};
static unsigned int sdslot_vdd = 0xffffffff;
static unsigned int sdslot_vreg_enabled;
static uint32_t sapphire_sdslot_switchvdd(struct device *dev, unsigned int vdd)
{
int i, rc;
BUG_ON(!vreg_sdslot);
if (vdd == sdslot_vdd)
return 0;
sdslot_vdd = vdd;
if (vdd == 0) {
#if DEBUG_SDSLOT_VDD
printk(KERN_DEBUG "%s: Disabling SD slot power\n", __func__);
#endif
config_gpio_table(sdcard_off_gpio_table,
ARRAY_SIZE(sdcard_off_gpio_table));
vreg_disable(vreg_sdslot);
sdslot_vreg_enabled = 0;
return 0;
}
if (!sdslot_vreg_enabled) {
rc = vreg_enable(vreg_sdslot);
if (rc) {
printk(KERN_ERR "%s: Error enabling vreg (%d)\n",
__func__, rc);
}
config_gpio_table(sdcard_on_gpio_table,
ARRAY_SIZE(sdcard_on_gpio_table));
sdslot_vreg_enabled = 1;
}
for (i = 0; i < ARRAY_SIZE(mmc_vdd_table); i++) {
if (mmc_vdd_table[i].mask == (1 << vdd)) {
#if DEBUG_SDSLOT_VDD
printk(KERN_DEBUG "%s: Setting level to %u\n",
__func__, mmc_vdd_table[i].level);
#endif
rc = vreg_set_level(vreg_sdslot,
mmc_vdd_table[i].level);
if (rc) {
printk(KERN_ERR
"%s: Error setting vreg level (%d)\n",
__func__, rc);
}
return 0;
}
}
printk(KERN_ERR "%s: Invalid VDD %d specified\n", __func__, vdd);
return 0;
}
static unsigned int sapphire_sdslot_status(struct device *dev)
{
unsigned int status;
status = (unsigned int) gpio_get_value(SAPPHIRE_GPIO_SDMC_CD_N);
return !status;
}
#define SAPPHIRE_MMC_VDD (MMC_VDD_165_195 | MMC_VDD_20_21 | MMC_VDD_21_22 \
| MMC_VDD_22_23 | MMC_VDD_23_24 | MMC_VDD_24_25 \
| MMC_VDD_25_26 | MMC_VDD_26_27 | MMC_VDD_27_28 \
| MMC_VDD_28_29 | MMC_VDD_29_30)
static struct mmc_platform_data sapphire_sdslot_data = {
.ocr_mask = SAPPHIRE_MMC_VDD,
.status = sapphire_sdslot_status,
.translate_vdd = sapphire_sdslot_switchvdd,
};
/* ---- WIFI ---- */
static uint32_t wifi_on_gpio_table[] = {
PCOM_GPIO_CFG(51, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT3 */
PCOM_GPIO_CFG(52, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT2 */
PCOM_GPIO_CFG(53, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
PCOM_GPIO_CFG(54, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT0 */
PCOM_GPIO_CFG(55, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
PCOM_GPIO_CFG(56, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
PCOM_GPIO_CFG(29, 0, GPIO_INPUT, GPIO_NO_PULL, GPIO_4MA), /* WLAN IRQ */
};
static uint32_t wifi_off_gpio_table[] = {
PCOM_GPIO_CFG(51, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT3 */
PCOM_GPIO_CFG(52, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT2 */
PCOM_GPIO_CFG(53, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT1 */
PCOM_GPIO_CFG(54, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT0 */
PCOM_GPIO_CFG(55, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CMD */
PCOM_GPIO_CFG(56, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CLK */
PCOM_GPIO_CFG(29, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* WLAN IRQ */
};
static struct vreg *vreg_wifi_osc; /* WIFI 32khz oscilator */
static int sapphire_wifi_cd = 0; /* WIFI virtual 'card detect' status */
static struct sdio_embedded_func wifi_func = {
.f_class = SDIO_CLASS_WLAN,
.f_maxblksize = 512,
};
static struct embedded_sdio_data sapphire_wifi_emb_data = {
.cis = {
.vendor = 0x104c,
.device = 0x9066,
.blksize = 512,
.max_dtr = 20000000,
},
.cccr = {
.multi_block = 0,
.low_speed = 0,
.wide_bus = 1,
.high_power = 0,
.high_speed = 0,
},
.funcs = &wifi_func,
.num_funcs = 1,
};
static void (*wifi_status_cb)(int card_present, void *dev_id);
static void *wifi_status_cb_devid;
static int sapphire_wifi_status_register(void (*callback)(int card_present,
void *dev_id),
void *dev_id)
{
if (wifi_status_cb)
return -EAGAIN;
wifi_status_cb = callback;
wifi_status_cb_devid = dev_id;
return 0;
}
static unsigned int sapphire_wifi_status(struct device *dev)
{
return sapphire_wifi_cd;
}
int sapphire_wifi_set_carddetect(int val)
{
printk(KERN_DEBUG "%s: %d\n", __func__, val);
sapphire_wifi_cd = val;
if (wifi_status_cb)
wifi_status_cb(val, wifi_status_cb_devid);
else
printk(KERN_WARNING "%s: Nobody to notify\n", __func__);
return 0;
}
#ifndef CONFIG_WIFI_CONTROL_FUNC
EXPORT_SYMBOL(sapphire_wifi_set_carddetect);
#endif
int sapphire_wifi_power_state=0;
int sapphire_bt_power_state=0;
int sapphire_wifi_power(int on)
{
int rc;
printk(KERN_DEBUG "%s: %d\n", __func__, on);
if (on) {
config_gpio_table(wifi_on_gpio_table,
ARRAY_SIZE(wifi_on_gpio_table));
rc = vreg_enable(vreg_wifi_osc);
if (rc)
return rc;
htc_pwrsink_set(PWRSINK_WIFI, 70);
} else {
config_gpio_table(wifi_off_gpio_table,
ARRAY_SIZE(wifi_off_gpio_table));
htc_pwrsink_set(PWRSINK_WIFI, 0);
}
gpio_set_value(SAPPHIRE_GPIO_MAC_32K_EN, on);
mdelay(100);
gpio_set_value(SAPPHIRE_GPIO_WIFI_EN, on);
mdelay(100);
if (!on) {
if(!sapphire_bt_power_state)
{
vreg_disable(vreg_wifi_osc);
printk("WiFi disable vreg_wifi_osc.\n");
}
else
printk("WiFi shouldn't disable vreg_wifi_osc. BT is using it!!\n");
}
sapphire_wifi_power_state = on;
return 0;
}
#ifndef CONFIG_WIFI_CONTROL_FUNC
EXPORT_SYMBOL(sapphire_wifi_power);
#endif
/* Eenable VREG_MMC pin to turn on fastclock oscillator : colin */
int sapphire_bt_fastclock_power(int on)
{
int rc;
printk(KERN_DEBUG "sapphire_bt_fastclock_power on = %d\n", on);
if (vreg_wifi_osc) {
if (on) {
rc = vreg_enable(vreg_wifi_osc);
printk(KERN_DEBUG "BT vreg_enable vreg_mmc, rc=%d\n",
rc);
if (rc) {
printk("Error turn sapphire_bt_fastclock_power rc=%d\n", rc);
return rc;
}
} else {
if (!sapphire_wifi_power_state) {
vreg_disable(vreg_wifi_osc);
printk(KERN_DEBUG "BT disable vreg_wifi_osc.\n");
} else
printk(KERN_DEBUG "BT shouldn't disable vreg_wifi_osc. WiFi is using it!!\n");
}
}
sapphire_bt_power_state = on;
return 0;
}
EXPORT_SYMBOL(sapphire_bt_fastclock_power);
static int sapphire_wifi_reset_state;
void sapphire_wifi_reset(int on)
{
printk(KERN_DEBUG "%s: %d\n", __func__, on);
gpio_set_value(SAPPHIRE_GPIO_WIFI_PA_RESETX, !on);
sapphire_wifi_reset_state = on;
mdelay(50);
}
#ifndef CONFIG_WIFI_CONTROL_FUNC
EXPORT_SYMBOL(sapphire_wifi_reset);
#endif
static struct mmc_platform_data sapphire_wifi_data = {
.ocr_mask = MMC_VDD_28_29,
.status = sapphire_wifi_status,
.register_status_notify = sapphire_wifi_status_register,
.embedded_sdio = &sapphire_wifi_emb_data,
};
int __init sapphire_init_mmc(unsigned int sys_rev)
{
wifi_status_cb = NULL;
sdslot_vreg_enabled = 0;
vreg_sdslot = vreg_get(0, "gp6");
if (IS_ERR(vreg_sdslot))
return PTR_ERR(vreg_sdslot);
vreg_wifi_osc = vreg_get(0, "mmc");
if (IS_ERR(vreg_wifi_osc))
return PTR_ERR(vreg_wifi_osc);
set_irq_wake(SAPPHIRE_GPIO_TO_INT(SAPPHIRE_GPIO_SDMC_CD_N), 1);
msm_add_sdcc(1, &sapphire_wifi_data, 0, 0);
if (!opt_disable_sdcard)
msm_add_sdcc(2, &sapphire_sdslot_data,
SAPPHIRE_GPIO_TO_INT(SAPPHIRE_GPIO_SDMC_CD_N), 0);
else
printk(KERN_INFO "sapphire: SD-Card interface disabled\n");
return 0;
}
#if defined(CONFIG_DEBUG_FS)
static int sapphiremmc_dbg_wifi_reset_set(void *data, u64 val)
{
sapphire_wifi_reset((int) val);
return 0;
}
static int sapphiremmc_dbg_wifi_reset_get(void *data, u64 *val)
{
*val = sapphire_wifi_reset_state;
return 0;
}
static int sapphiremmc_dbg_wifi_cd_set(void *data, u64 val)
{
sapphire_wifi_set_carddetect((int) val);
return 0;
}
static int sapphiremmc_dbg_wifi_cd_get(void *data, u64 *val)
{
*val = sapphire_wifi_cd;
return 0;
}
static int sapphiremmc_dbg_wifi_pwr_set(void *data, u64 val)
{
sapphire_wifi_power((int) val);
return 0;
}
static int sapphiremmc_dbg_wifi_pwr_get(void *data, u64 *val)
{
*val = sapphire_wifi_power_state;
return 0;
}
static int sapphiremmc_dbg_sd_pwr_set(void *data, u64 val)
{
sapphire_sdslot_switchvdd(NULL, (unsigned int) val);
return 0;
}
static int sapphiremmc_dbg_sd_pwr_get(void *data, u64 *val)
{
*val = sdslot_vdd;
return 0;
}
static int sapphiremmc_dbg_sd_cd_set(void *data, u64 val)
{
return -ENOSYS;
}
static int sapphiremmc_dbg_sd_cd_get(void *data, u64 *val)
{
*val = sapphire_sdslot_status(NULL);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(sapphiremmc_dbg_wifi_reset_fops,
sapphiremmc_dbg_wifi_reset_get,
sapphiremmc_dbg_wifi_reset_set, "%llu\n");
DEFINE_SIMPLE_ATTRIBUTE(sapphiremmc_dbg_wifi_cd_fops,
sapphiremmc_dbg_wifi_cd_get,
sapphiremmc_dbg_wifi_cd_set, "%llu\n");
DEFINE_SIMPLE_ATTRIBUTE(sapphiremmc_dbg_wifi_pwr_fops,
sapphiremmc_dbg_wifi_pwr_get,
sapphiremmc_dbg_wifi_pwr_set, "%llu\n");
DEFINE_SIMPLE_ATTRIBUTE(sapphiremmc_dbg_sd_pwr_fops,
sapphiremmc_dbg_sd_pwr_get,
sapphiremmc_dbg_sd_pwr_set, "%llu\n");
DEFINE_SIMPLE_ATTRIBUTE(sapphiremmc_dbg_sd_cd_fops,
sapphiremmc_dbg_sd_cd_get,
sapphiremmc_dbg_sd_cd_set, "%llu\n");
static int __init sapphiremmc_dbg_init(void)
{
struct dentry *dent;
if (!machine_is_sapphire())
return 0;
dent = debugfs_create_dir("sapphiremmc_dbg", 0);
if (IS_ERR(dent))
return PTR_ERR(dent);
debugfs_create_file("wifi_reset", 0644, dent, NULL,
&sapphiremmc_dbg_wifi_reset_fops);
debugfs_create_file("wifi_cd", 0644, dent, NULL,
&sapphiremmc_dbg_wifi_cd_fops);
debugfs_create_file("wifi_pwr", 0644, dent, NULL,
&sapphiremmc_dbg_wifi_pwr_fops);
debugfs_create_file("sd_pwr", 0644, dent, NULL,
&sapphiremmc_dbg_sd_pwr_fops);
debugfs_create_file("sd_cd", 0644, dent, NULL,
&sapphiremmc_dbg_sd_cd_fops);
return 0;
}
device_initcall(sapphiremmc_dbg_init);
#endif