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/* linux/arch/arm/mach-msm/board-mahimahi-mmc.c
*
* Copyright (C) 2009 Google, Inc.
* Copyright (C) 2009 HTC Corporation
*
* 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/delay.h>
#include <linux/debugfs.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/platform_device.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/mach/mmc.h>
#include <mach/vreg.h>
#include "board-mahimahi.h"
#include "devices.h"
#include "proc_comm.h"
#undef MAHIMAHI_DEBUG_MMC
static bool opt_disable_sdcard;
static int __init mahimahi_disablesdcard_setup(char *str)
{
opt_disable_sdcard = (bool)simple_strtol(str, NULL, 0);
return 1;
}
__setup("board_mahimahi.disable_sdcard=", mahimahi_disablesdcard_setup);
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);
}
}
static uint32_t sdcard_on_gpio_table[] = {
PCOM_GPIO_CFG(62, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
PCOM_GPIO_CFG(63, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
PCOM_GPIO_CFG(64, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT3 */
PCOM_GPIO_CFG(65, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT2 */
PCOM_GPIO_CFG(66, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
PCOM_GPIO_CFG(67, 1, 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 struct vreg *sdslot_vreg;
static uint32_t sdslot_vdd = 0xffffffff;
static uint32_t sdslot_vreg_enabled;
static struct {
int mask;
int level;
} 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 uint32_t mahimahi_sdslot_switchvdd(struct device *dev, unsigned int vdd)
{
int i;
int ret;
if (vdd == sdslot_vdd)
return 0;
sdslot_vdd = vdd;
if (vdd == 0) {
config_gpio_table(sdcard_off_gpio_table,
ARRAY_SIZE(sdcard_off_gpio_table));
vreg_disable(sdslot_vreg);
sdslot_vreg_enabled = 0;
return 0;
}
if (!sdslot_vreg_enabled) {
ret = vreg_enable(sdslot_vreg);
if (ret)
pr_err("%s: Error enabling vreg (%d)\n", __func__, ret);
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))
continue;
ret = vreg_set_level(sdslot_vreg, mmc_vdd_table[i].level);
if (ret)
pr_err("%s: Error setting level (%d)\n", __func__, ret);
return 0;
}
pr_err("%s: Invalid VDD (%d) specified\n", __func__, vdd);
return 0;
}
static uint32_t mahimahi_cdma_sdslot_switchvdd(struct device *dev, unsigned int vdd)
{
if (!vdd == !sdslot_vdd)
return 0;
/* In CDMA version, the vdd of sdslot is not configurable, and it is
* fixed in 2.85V by hardware design.
*/
sdslot_vdd = vdd ? MMC_VDD_28_29 : 0;
if (vdd) {
gpio_set_value(MAHIMAHI_CDMA_SD_2V85_EN, 1);
config_gpio_table(sdcard_on_gpio_table,
ARRAY_SIZE(sdcard_on_gpio_table));
} else {
config_gpio_table(sdcard_off_gpio_table,
ARRAY_SIZE(sdcard_off_gpio_table));
gpio_set_value(MAHIMAHI_CDMA_SD_2V85_EN, 0);
}
sdslot_vreg_enabled = !!vdd;
return 0;
}
static unsigned int mahimahi_sdslot_status_rev0(struct device *dev)
{
return !gpio_get_value(MAHIMAHI_GPIO_SDMC_CD_REV0_N);
}
#define MAHIMAHI_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)
int mahimahi_microp_sdslot_status_register(void (*cb)(int, void *), void *);
unsigned int mahimahi_microp_sdslot_status(struct device *);
static struct mmc_platform_data mahimahi_sdslot_data = {
.ocr_mask = MAHIMAHI_MMC_VDD,
.status = mahimahi_microp_sdslot_status,
.register_status_notify = mahimahi_microp_sdslot_status_register,
.translate_vdd = mahimahi_sdslot_switchvdd,
};
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(152, 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(152, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* WLAN IRQ */
};
/* BCM4329 returns wrong sdio_vsn(1) when we read cccr,
* we use predefined value (sdio_vsn=2) here to initial sdio driver well
*/
static struct embedded_sdio_data mahimahi_wifi_emb_data = {
.cccr = {
.sdio_vsn = 2,
.multi_block = 1,
.low_speed = 0,
.wide_bus = 0,
.high_power = 1,
.high_speed = 1,
},
};
static int mahimahi_wifi_cd = 0; /* WIFI virtual 'card detect' status */
static void (*wifi_status_cb)(int card_present, void *dev_id);
static void *wifi_status_cb_devid;
static int mahimahi_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 mahimahi_wifi_status(struct device *dev)
{
return mahimahi_wifi_cd;
}
static struct mmc_platform_data mahimahi_wifi_data = {
.ocr_mask = MMC_VDD_28_29,
.built_in = 1,
.status = mahimahi_wifi_status,
.register_status_notify = mahimahi_wifi_status_register,
.embedded_sdio = &mahimahi_wifi_emb_data,
};
int mahimahi_wifi_set_carddetect(int val)
{
pr_info("%s: %d\n", __func__, val);
mahimahi_wifi_cd = val;
if (wifi_status_cb) {
wifi_status_cb(val, wifi_status_cb_devid);
} else
pr_warning("%s: Nobody to notify\n", __func__);
return 0;
}
static int mahimahi_wifi_power_state;
int mahimahi_wifi_power(int on)
{
printk("%s: %d\n", __func__, on);
if (on) {
config_gpio_table(wifi_on_gpio_table,
ARRAY_SIZE(wifi_on_gpio_table));
mdelay(50);
} else {
config_gpio_table(wifi_off_gpio_table,
ARRAY_SIZE(wifi_off_gpio_table));
}
mdelay(100);
gpio_set_value(MAHIMAHI_GPIO_WIFI_SHUTDOWN_N, on); /* WIFI_SHUTDOWN */
mdelay(200);
mahimahi_wifi_power_state = on;
return 0;
}
static int mahimahi_wifi_reset_state;
int mahimahi_wifi_reset(int on)
{
printk("%s: do nothing\n", __func__);
mahimahi_wifi_reset_state = on;
return 0;
}
int msm_add_sdcc(unsigned int controller, struct mmc_platform_data *plat,
unsigned int stat_irq, unsigned long stat_irq_flags);
int __init mahimahi_init_mmc(unsigned int sys_rev, unsigned debug_uart)
{
uint32_t id;
printk("%s()+\n", __func__);
/* initial WIFI_SHUTDOWN# */
id = PCOM_GPIO_CFG(MAHIMAHI_GPIO_WIFI_SHUTDOWN_N, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA),
msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &id, 0);
msm_add_sdcc(1, &mahimahi_wifi_data, 0, 0);
if (debug_uart) {
pr_info("%s: sdcard disabled due to debug uart\n", __func__);
goto done;
}
if (opt_disable_sdcard) {
pr_info("%s: sdcard disabled on cmdline\n", __func__);
goto done;
}
sdslot_vreg_enabled = 0;
if (is_cdma_version(sys_rev)) {
/* In the CDMA version, sdslot is supplied by a gpio. */
int rc = gpio_request(MAHIMAHI_CDMA_SD_2V85_EN, "sdslot_en");
if (rc < 0) {
pr_err("%s: gpio_request(%d) failed: %d\n", __func__,
MAHIMAHI_CDMA_SD_2V85_EN, rc);
return rc;
}
mahimahi_sdslot_data.translate_vdd = mahimahi_cdma_sdslot_switchvdd;
} else {
/* in UMTS version, sdslot is supplied by pmic */
sdslot_vreg = vreg_get(0, "gp6");
if (IS_ERR(sdslot_vreg))
return PTR_ERR(sdslot_vreg);
}
if (system_rev > 0)
msm_add_sdcc(2, &mahimahi_sdslot_data, 0, 0);
else {
mahimahi_sdslot_data.status = mahimahi_sdslot_status_rev0;
mahimahi_sdslot_data.register_status_notify = NULL;
set_irq_wake(MSM_GPIO_TO_INT(MAHIMAHI_GPIO_SDMC_CD_REV0_N), 1);
msm_add_sdcc(2, &mahimahi_sdslot_data,
MSM_GPIO_TO_INT(MAHIMAHI_GPIO_SDMC_CD_REV0_N),
IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE);
}
done:
printk("%s()-\n", __func__);
return 0;
}
#if defined(MAHIMAHI_DEBUG_MMC) && defined(CONFIG_DEBUG_FS)
static int mahimahimmc_dbg_wifi_reset_set(void *data, u64 val)
{
mahimahi_wifi_reset((int) val);
return 0;
}
static int mahimahimmc_dbg_wifi_reset_get(void *data, u64 *val)
{
*val = mahimahi_wifi_reset_state;
return 0;
}
static int mahimahimmc_dbg_wifi_cd_set(void *data, u64 val)
{
mahimahi_wifi_set_carddetect((int) val);
return 0;
}
static int mahimahimmc_dbg_wifi_cd_get(void *data, u64 *val)
{
*val = mahimahi_wifi_cd;
return 0;
}
static int mahimahimmc_dbg_wifi_pwr_set(void *data, u64 val)
{
mahimahi_wifi_power((int) val);
return 0;
}
static int mahimahimmc_dbg_wifi_pwr_get(void *data, u64 *val)
{
*val = mahimahi_wifi_power_state;
return 0;
}
static int mahimahimmc_dbg_sd_pwr_set(void *data, u64 val)
{
mahimahi_sdslot_switchvdd(NULL, (unsigned int) val);
return 0;
}
static int mahimahimmc_dbg_sd_pwr_get(void *data, u64 *val)
{
*val = sdslot_vdd;
return 0;
}
static int mahimahimmc_dbg_sd_cd_set(void *data, u64 val)
{
return -ENOSYS;
}
static int mahimahimmc_dbg_sd_cd_get(void *data, u64 *val)
{
*val = mahimahi_sdslot_data.status(NULL);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_wifi_reset_fops,
mahimahimmc_dbg_wifi_reset_get,
mahimahimmc_dbg_wifi_reset_set, "%llu\n");
DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_wifi_cd_fops,
mahimahimmc_dbg_wifi_cd_get,
mahimahimmc_dbg_wifi_cd_set, "%llu\n");
DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_wifi_pwr_fops,
mahimahimmc_dbg_wifi_pwr_get,
mahimahimmc_dbg_wifi_pwr_set, "%llu\n");
DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_sd_pwr_fops,
mahimahimmc_dbg_sd_pwr_get,
mahimahimmc_dbg_sd_pwr_set, "%llu\n");
DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_sd_cd_fops,
mahimahimmc_dbg_sd_cd_get,
mahimahimmc_dbg_sd_cd_set, "%llu\n");
static int __init mahimahimmc_dbg_init(void)
{
struct dentry *dent;
if (!machine_is_mahimahi())
return 0;
dent = debugfs_create_dir("mahimahi_mmc_dbg", 0);
if (IS_ERR(dent))
return PTR_ERR(dent);
debugfs_create_file("wifi_reset", 0644, dent, NULL,
&mahimahimmc_dbg_wifi_reset_fops);
debugfs_create_file("wifi_cd", 0644, dent, NULL,
&mahimahimmc_dbg_wifi_cd_fops);
debugfs_create_file("wifi_pwr", 0644, dent, NULL,
&mahimahimmc_dbg_wifi_pwr_fops);
debugfs_create_file("sd_pwr", 0644, dent, NULL,
&mahimahimmc_dbg_sd_pwr_fops);
debugfs_create_file("sd_cd", 0644, dent, NULL,
&mahimahimmc_dbg_sd_cd_fops);
return 0;
}
device_initcall(mahimahimmc_dbg_init);
#endif