blob: 93a61782cc590565b5836ca5157ab4af587e32de [file] [log] [blame]
/* Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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 <asm/mach-types.h>
#include <asm/mach/mmc.h>
#include <linux/regulator/consumer.h>
#include <mach/gpio.h>
#include <mach/gpiomux.h>
#include <mach/board.h>
#include "devices.h"
#include "board-msm7627a.h"
#if (defined(CONFIG_MMC_MSM_SDC1_SUPPORT)\
|| defined(CONFIG_MMC_MSM_SDC2_SUPPORT)\
|| defined(CONFIG_MMC_MSM_SDC3_SUPPORT)\
|| defined(CONFIG_MMC_MSM_SDC4_SUPPORT))
static unsigned long vreg_sts, gpio_sts;
struct sdcc_gpio {
struct msm_gpio *cfg_data;
uint32_t size;
struct msm_gpio *sleep_cfg_data;
};
/**
* Due to insufficient drive strengths for SDC GPIO lines some old versioned
* SD/MMC cards may cause data CRC errors. Hence, set optimal values
* for SDC slots based on timing closure and marginality. SDC1 slot
* require higher value since it should handle bad signal quality due
* to size of T-flash adapters.
*/
static struct msm_gpio sdc1_cfg_data[] = {
{GPIO_CFG(51, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_14MA),
"sdc1_dat_3"},
{GPIO_CFG(52, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_14MA),
"sdc1_dat_2"},
{GPIO_CFG(53, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_14MA),
"sdc1_dat_1"},
{GPIO_CFG(54, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_14MA),
"sdc1_dat_0"},
{GPIO_CFG(55, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_14MA),
"sdc1_cmd"},
{GPIO_CFG(56, 1, GPIO_CFG_OUTPUT, GPIO_CFG_NO_PULL, GPIO_CFG_14MA),
"sdc1_clk"},
};
static struct msm_gpio sdc2_cfg_data[] = {
{GPIO_CFG(62, 2, GPIO_CFG_OUTPUT, GPIO_CFG_NO_PULL, GPIO_CFG_8MA),
"sdc2_clk"},
{GPIO_CFG(63, 2, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc2_cmd"},
{GPIO_CFG(64, 2, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc2_dat_3"},
{GPIO_CFG(65, 2, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc2_dat_2"},
{GPIO_CFG(66, 2, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc2_dat_1"},
{GPIO_CFG(67, 2, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc2_dat_0"},
};
static struct msm_gpio sdc2_sleep_cfg_data[] = {
{GPIO_CFG(62, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_DOWN, GPIO_CFG_2MA),
"sdc2_clk"},
{GPIO_CFG(63, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_DOWN, GPIO_CFG_2MA),
"sdc2_cmd"},
{GPIO_CFG(64, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_DOWN, GPIO_CFG_2MA),
"sdc2_dat_3"},
{GPIO_CFG(65, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_DOWN, GPIO_CFG_2MA),
"sdc2_dat_2"},
{GPIO_CFG(66, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_DOWN, GPIO_CFG_2MA),
"sdc2_dat_1"},
{GPIO_CFG(67, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_DOWN, GPIO_CFG_2MA),
"sdc2_dat_0"},
};
static struct msm_gpio sdc3_cfg_data[] = {
{GPIO_CFG(88, 1, GPIO_CFG_OUTPUT, GPIO_CFG_NO_PULL, GPIO_CFG_8MA),
"sdc3_clk"},
{GPIO_CFG(89, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc3_cmd"},
{GPIO_CFG(90, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc3_dat_3"},
{GPIO_CFG(91, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc3_dat_2"},
{GPIO_CFG(92, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc3_dat_1"},
{GPIO_CFG(93, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc3_dat_0"},
#ifdef CONFIG_MMC_MSM_SDC3_8_BIT_SUPPORT
{GPIO_CFG(19, 3, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc3_dat_7"},
{GPIO_CFG(20, 3, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc3_dat_6"},
{GPIO_CFG(21, 3, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc3_dat_5"},
{GPIO_CFG(108, 3, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc3_dat_4"},
#endif
};
static struct msm_gpio sdc4_cfg_data[] = {
{GPIO_CFG(19, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc4_dat_3"},
{GPIO_CFG(20, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc4_dat_2"},
{GPIO_CFG(21, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc4_dat_1"},
{GPIO_CFG(107, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc4_cmd"},
{GPIO_CFG(108, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
"sdc4_dat_0"},
{GPIO_CFG(109, 1, GPIO_CFG_OUTPUT, GPIO_CFG_NO_PULL, GPIO_CFG_8MA),
"sdc4_clk"},
};
static struct sdcc_gpio sdcc_cfg_data[] = {
{
.cfg_data = sdc1_cfg_data,
.size = ARRAY_SIZE(sdc1_cfg_data),
},
{
.cfg_data = sdc2_cfg_data,
.size = ARRAY_SIZE(sdc2_cfg_data),
.sleep_cfg_data = sdc2_sleep_cfg_data,
},
{
.cfg_data = sdc3_cfg_data,
.size = ARRAY_SIZE(sdc3_cfg_data),
},
{
.cfg_data = sdc4_cfg_data,
.size = ARRAY_SIZE(sdc4_cfg_data),
},
};
static int gpio_sdc1_hw_det = 85;
static void gpio_sdc1_config(void)
{
if (machine_is_msm7627a_qrd1() || machine_is_msm7627a_evb())
gpio_sdc1_hw_det = 42;
}
static struct regulator *sdcc_vreg_data[ARRAY_SIZE(sdcc_cfg_data)];
static int msm_sdcc_setup_gpio(int dev_id, unsigned int enable)
{
int rc = 0;
struct sdcc_gpio *curr;
curr = &sdcc_cfg_data[dev_id - 1];
if (!(test_bit(dev_id, &gpio_sts)^enable))
return rc;
if (enable) {
set_bit(dev_id, &gpio_sts);
rc = msm_gpios_request_enable(curr->cfg_data, curr->size);
if (rc)
pr_err("%s: Failed to turn on GPIOs for slot %d\n",
__func__, dev_id);
} else {
clear_bit(dev_id, &gpio_sts);
if (curr->sleep_cfg_data) {
rc = msm_gpios_enable(curr->sleep_cfg_data, curr->size);
msm_gpios_free(curr->sleep_cfg_data, curr->size);
return rc;
}
msm_gpios_disable_free(curr->cfg_data, curr->size);
}
return rc;
}
static int msm_sdcc_setup_vreg(int dev_id, unsigned int enable)
{
int rc = 0;
struct regulator *curr = sdcc_vreg_data[dev_id - 1];
if (test_bit(dev_id, &vreg_sts) == enable)
return 0;
if (!curr)
return -ENODEV;
if (IS_ERR(curr))
return PTR_ERR(curr);
if (enable) {
set_bit(dev_id, &vreg_sts);
rc = regulator_enable(curr);
if (rc)
pr_err("%s: could not enable regulator: %d\n",
__func__, rc);
} else {
clear_bit(dev_id, &vreg_sts);
rc = regulator_disable(curr);
if (rc)
pr_err("%s: could not disable regulator: %d\n",
__func__, rc);
}
return rc;
}
static uint32_t msm_sdcc_setup_power(struct device *dv, unsigned int vdd)
{
int rc = 0;
struct platform_device *pdev;
pdev = container_of(dv, struct platform_device, dev);
rc = msm_sdcc_setup_gpio(pdev->id, !!vdd);
if (rc)
goto out;
rc = msm_sdcc_setup_vreg(pdev->id, !!vdd);
out:
return rc;
}
#if defined(CONFIG_MMC_MSM_SDC1_SUPPORT) \
&& defined(CONFIG_MMC_MSM_CARD_HW_DETECTION)
static unsigned int msm7627a_sdcc_slot_status(struct device *dev)
{
int status;
status = gpio_tlmm_config(GPIO_CFG(gpio_sdc1_hw_det, 2, GPIO_CFG_INPUT,
GPIO_CFG_PULL_UP, GPIO_CFG_8MA),
GPIO_CFG_ENABLE);
if (status)
pr_err("%s:Failed to configure tlmm for GPIO %d\n", __func__,
gpio_sdc1_hw_det);
status = gpio_request(gpio_sdc1_hw_det, "SD_HW_Detect");
if (status) {
pr_err("%s:Failed to request GPIO %d\n", __func__,
gpio_sdc1_hw_det);
} else {
status = gpio_direction_input(gpio_sdc1_hw_det);
if (!status) {
if (machine_is_msm7627a_qrd1() ||
machine_is_msm7627a_evb())
status = !gpio_get_value(gpio_sdc1_hw_det);
else
status = gpio_get_value(gpio_sdc1_hw_det);
}
gpio_free(gpio_sdc1_hw_det);
}
return status;
}
#endif
#ifdef CONFIG_MMC_MSM_SDC1_SUPPORT
static struct mmc_platform_data sdc1_plat_data = {
.ocr_mask = MMC_VDD_28_29,
.translate_vdd = msm_sdcc_setup_power,
.mmc_bus_width = MMC_CAP_4_BIT_DATA,
.msmsdcc_fmin = 144000,
.msmsdcc_fmid = 24576000,
.msmsdcc_fmax = 49152000,
#ifdef CONFIG_MMC_MSM_CARD_HW_DETECTION
.status = msm7627a_sdcc_slot_status,
.irq_flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
#endif
};
#endif
#ifdef CONFIG_MMC_MSM_SDC2_SUPPORT
static struct mmc_platform_data sdc2_plat_data = {
/*
* SDC2 supports only 1.8V, claim for 2.85V range is just
* for allowing buggy cards who advertise 2.8V even though
* they can operate at 1.8V supply.
*/
.ocr_mask = MMC_VDD_28_29 | MMC_VDD_165_195,
.translate_vdd = msm_sdcc_setup_power,
.mmc_bus_width = MMC_CAP_4_BIT_DATA,
#ifdef CONFIG_MMC_MSM_SDIO_SUPPORT
.sdiowakeup_irq = MSM_GPIO_TO_INT(66),
#endif
.msmsdcc_fmin = 144000,
.msmsdcc_fmid = 24576000,
.msmsdcc_fmax = 49152000,
#ifdef CONFIG_MMC_MSM_SDC2_DUMMY52_REQUIRED
.dummy52_required = 1,
#endif
};
#endif
#ifdef CONFIG_MMC_MSM_SDC3_SUPPORT
static struct mmc_platform_data sdc3_plat_data = {
.ocr_mask = MMC_VDD_28_29,
.translate_vdd = msm_sdcc_setup_power,
#ifdef CONFIG_MMC_MSM_SDC3_8_BIT_SUPPORT
.mmc_bus_width = MMC_CAP_8_BIT_DATA,
#else
.mmc_bus_width = MMC_CAP_4_BIT_DATA,
#endif
.msmsdcc_fmin = 144000,
.msmsdcc_fmid = 24576000,
.msmsdcc_fmax = 49152000,
.nonremovable = 1,
};
#endif
#if (defined(CONFIG_MMC_MSM_SDC4_SUPPORT)\
&& !defined(CONFIG_MMC_MSM_SDC3_8_BIT_SUPPORT))
static struct mmc_platform_data sdc4_plat_data = {
.ocr_mask = MMC_VDD_28_29,
.translate_vdd = msm_sdcc_setup_power,
.mmc_bus_width = MMC_CAP_4_BIT_DATA,
.msmsdcc_fmin = 144000,
.msmsdcc_fmid = 24576000,
.msmsdcc_fmax = 49152000,
};
#endif
static int __init mmc_regulator_init(int sdcc_no, const char *supply, int uV)
{
int rc;
BUG_ON(sdcc_no < 1 || sdcc_no > 4);
sdcc_no--;
sdcc_vreg_data[sdcc_no] = regulator_get(NULL, supply);
if (IS_ERR(sdcc_vreg_data[sdcc_no])) {
rc = PTR_ERR(sdcc_vreg_data[sdcc_no]);
pr_err("%s: could not get regulator \"%s\": %d\n",
__func__, supply, rc);
goto out;
}
rc = regulator_set_voltage(sdcc_vreg_data[sdcc_no], uV, uV);
if (rc) {
pr_err("%s: could not set voltage for \"%s\" to %d uV: %d\n",
__func__, supply, uV, rc);
goto reg_free;
}
return rc;
reg_free:
regulator_put(sdcc_vreg_data[sdcc_no]);
out:
sdcc_vreg_data[sdcc_no] = NULL;
return rc;
}
void __init msm7627a_init_mmc(void)
{
/* eMMC slot */
#ifdef CONFIG_MMC_MSM_SDC3_SUPPORT
if (mmc_regulator_init(3, "emmc", 3000000))
return;
msm_add_sdcc(3, &sdc3_plat_data);
#endif
/* Micro-SD slot */
#ifdef CONFIG_MMC_MSM_SDC1_SUPPORT
gpio_sdc1_config();
if (mmc_regulator_init(1, "mmc", 2850000))
return;
sdc1_plat_data.status_irq = MSM_GPIO_TO_INT(gpio_sdc1_hw_det);
msm_add_sdcc(1, &sdc1_plat_data);
#endif
/* SDIO WLAN slot */
#ifdef CONFIG_MMC_MSM_SDC2_SUPPORT
if (mmc_regulator_init(2, "mmc", 2850000))
return;
msm_add_sdcc(2, &sdc2_plat_data);
#endif
/* Not Used */
#if (defined(CONFIG_MMC_MSM_SDC4_SUPPORT)\
&& !defined(CONFIG_MMC_MSM_SDC3_8_BIT_SUPPORT))
if (mmc_regulator_init(4, "mmc", 2850000))
return;
msm_add_sdcc(4, &sdc4_plat_data);
#endif
}
#endif