M7350/kernel/arch/arm/mach-msm/board-8930-storage.c
2024-09-09 08:52:07 +00:00

326 lines
9.3 KiB
C

/* Copyright (c) 2011-2012, The Linux Foundation. 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 <linux/init.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/bootmem.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/mmc.h>
#include <mach/msm_bus_board.h>
#include <mach/board.h>
#include <mach/gpiomux.h>
#include <mach/socinfo.h>
#include "devices.h"
#include "board-8930.h"
#include "board-storage-common-a.h"
/* MSM8960 has 5 SDCC controllers */
enum sdcc_controllers {
SDCC1,
SDCC2,
SDCC3,
SDCC4,
SDCC5,
MAX_SDCC_CONTROLLER
};
/* All SDCC controllers require VDD/VCC voltage */
static struct msm_mmc_reg_data mmc_vdd_reg_data[MAX_SDCC_CONTROLLER] = {
/* SDCC1 : eMMC card connected */
[SDCC1] = {
.name = "sdc_vdd",
.high_vol_level = 2950000,
.low_vol_level = 2950000,
.always_on = 1,
.lpm_sup = 1,
.lpm_uA = 9000,
.hpm_uA = 200000, /* 200mA */
},
/* SDCC3 : External card slot connected */
[SDCC3] = {
.name = "sdc_vdd",
.high_vol_level = 2950000,
.low_vol_level = 2950000,
/*
* Normally this is not an always ON regulator. On this
* platform, unfortunately the sd detect line is connected
* to this via esd circuit and so turn this off/on while card
* is not present causes the sd detect line to toggle
* continuously. This is expected to be fixed in the newer
* hardware revisions - maybe once that is done, this can be
* reverted.
*/
.lpm_sup = 1,
.hpm_uA = 800000, /* 800mA */
.lpm_uA = 9000,
},
};
/* All SDCC controllers may require voting for VDD PAD voltage */
static struct msm_mmc_reg_data mmc_vdd_io_reg_data[MAX_SDCC_CONTROLLER] = {
/* SDCC1 : eMMC card connected */
[SDCC1] = {
.name = "sdc_vdd_io",
.always_on = 1,
.high_vol_level = 1800000,
.low_vol_level = 1800000,
.hpm_uA = 200000, /* 200mA */
},
/* SDCC3 : External card slot connected */
[SDCC3] = {
.name = "sdc_vdd_io",
.high_vol_level = 2950000,
.low_vol_level = 1850000,
.always_on = 1,
.lpm_sup = 1,
/* Max. Active current required is 16 mA */
.hpm_uA = 16000,
/*
* Sleep current required is ~300 uA. But min. vote can be
* in terms of mA (min. 1 mA). So let's vote for 2 mA
* during sleep.
*/
.lpm_uA = 2000,
}
};
static struct msm_mmc_slot_reg_data mmc_slot_vreg_data[MAX_SDCC_CONTROLLER] = {
/* SDCC1 : eMMC card connected */
[SDCC1] = {
.vdd_data = &mmc_vdd_reg_data[SDCC1],
.vdd_io_data = &mmc_vdd_io_reg_data[SDCC1],
},
/* SDCC3 : External card slot connected */
[SDCC3] = {
.vdd_data = &mmc_vdd_reg_data[SDCC3],
.vdd_io_data = &mmc_vdd_io_reg_data[SDCC3],
}
};
/* SDC1 pad data */
static struct msm_mmc_pad_drv sdc1_pad_drv_on_cfg[] = {
{TLMM_HDRV_SDC1_CLK, GPIO_CFG_16MA},
{TLMM_HDRV_SDC1_CMD, GPIO_CFG_10MA},
{TLMM_HDRV_SDC1_DATA, GPIO_CFG_10MA}
};
static struct msm_mmc_pad_drv sdc1_pad_drv_off_cfg[] = {
{TLMM_HDRV_SDC1_CLK, GPIO_CFG_2MA},
{TLMM_HDRV_SDC1_CMD, GPIO_CFG_2MA},
{TLMM_HDRV_SDC1_DATA, GPIO_CFG_2MA}
};
static struct msm_mmc_pad_pull sdc1_pad_pull_on_cfg[] = {
{TLMM_PULL_SDC1_CLK, GPIO_CFG_NO_PULL},
{TLMM_PULL_SDC1_CMD, GPIO_CFG_PULL_UP},
{TLMM_PULL_SDC1_DATA, GPIO_CFG_PULL_UP}
};
static struct msm_mmc_pad_pull sdc1_pad_pull_off_cfg[] = {
{TLMM_PULL_SDC1_CLK, GPIO_CFG_NO_PULL},
{TLMM_PULL_SDC1_CMD, GPIO_CFG_PULL_UP},
{TLMM_PULL_SDC1_DATA, GPIO_CFG_PULL_UP}
};
/* SDC3 pad data */
static struct msm_mmc_pad_drv sdc3_pad_drv_on_cfg[] = {
{TLMM_HDRV_SDC3_CLK, GPIO_CFG_8MA},
{TLMM_HDRV_SDC3_CMD, GPIO_CFG_8MA},
{TLMM_HDRV_SDC3_DATA, GPIO_CFG_8MA}
};
static struct msm_mmc_pad_drv sdc3_pad_drv_off_cfg[] = {
{TLMM_HDRV_SDC3_CLK, GPIO_CFG_2MA},
{TLMM_HDRV_SDC3_CMD, GPIO_CFG_2MA},
{TLMM_HDRV_SDC3_DATA, GPIO_CFG_2MA}
};
static struct msm_mmc_pad_pull sdc3_pad_pull_on_cfg[] = {
{TLMM_PULL_SDC3_CLK, GPIO_CFG_NO_PULL},
{TLMM_PULL_SDC3_CMD, GPIO_CFG_PULL_UP},
{TLMM_PULL_SDC3_DATA, GPIO_CFG_PULL_UP}
};
static struct msm_mmc_pad_pull sdc3_pad_pull_off_cfg[] = {
{TLMM_PULL_SDC3_CLK, GPIO_CFG_NO_PULL},
/*
* SDC3 CMD line should be PULLed UP otherwise fluid platform will
* see transitions (1 -> 0 and 0 -> 1) on card detection line,
* which would result in false card detection interrupts.
*/
{TLMM_PULL_SDC3_CMD, GPIO_CFG_PULL_UP},
/*
* Keeping DATA lines status to PULL UP will make sure that
* there is no current leak during sleep if external pull up
* is connected to DATA lines.
*/
{TLMM_PULL_SDC3_DATA, GPIO_CFG_PULL_UP}
};
static struct msm_mmc_pad_pull_data mmc_pad_pull_data[MAX_SDCC_CONTROLLER] = {
[SDCC1] = {
.on = sdc1_pad_pull_on_cfg,
.off = sdc1_pad_pull_off_cfg,
.size = ARRAY_SIZE(sdc1_pad_pull_on_cfg)
},
[SDCC3] = {
.on = sdc3_pad_pull_on_cfg,
.off = sdc3_pad_pull_off_cfg,
.size = ARRAY_SIZE(sdc3_pad_pull_on_cfg)
},
};
static struct msm_mmc_pad_drv_data mmc_pad_drv_data[MAX_SDCC_CONTROLLER] = {
[SDCC1] = {
.on = sdc1_pad_drv_on_cfg,
.off = sdc1_pad_drv_off_cfg,
.size = ARRAY_SIZE(sdc1_pad_drv_on_cfg)
},
[SDCC3] = {
.on = sdc3_pad_drv_on_cfg,
.off = sdc3_pad_drv_off_cfg,
.size = ARRAY_SIZE(sdc3_pad_drv_on_cfg)
},
};
static struct msm_mmc_pad_data mmc_pad_data[MAX_SDCC_CONTROLLER] = {
[SDCC1] = {
.pull = &mmc_pad_pull_data[SDCC1],
.drv = &mmc_pad_drv_data[SDCC1]
},
[SDCC3] = {
.pull = &mmc_pad_pull_data[SDCC3],
.drv = &mmc_pad_drv_data[SDCC3]
},
};
static struct msm_mmc_pin_data mmc_slot_pin_data[MAX_SDCC_CONTROLLER] = {
[SDCC1] = {
.pad_data = &mmc_pad_data[SDCC1],
},
[SDCC3] = {
.pad_data = &mmc_pad_data[SDCC3],
},
};
#define MSM_MPM_PIN_SDC1_DAT1 17
#define MSM_MPM_PIN_SDC3_DAT1 21
static unsigned int sdc1_sup_clk_rates[] = {
400000, 24000000, 48000000, 96000000
};
#ifdef CONFIG_MMC_MSM_SDC3_SUPPORT
static unsigned int sdc3_sup_clk_rates[] = {
400000, 24000000, 48000000, 96000000, 192000000,
};
#endif
#ifdef CONFIG_MMC_MSM_SDC1_SUPPORT
static struct mmc_platform_data msm8960_sdc1_data = {
.ocr_mask = MMC_VDD_27_28 | MMC_VDD_28_29,
#ifdef CONFIG_MMC_MSM_SDC1_8_BIT_SUPPORT
.mmc_bus_width = MMC_CAP_8_BIT_DATA,
#else
.mmc_bus_width = MMC_CAP_4_BIT_DATA,
#endif
.sup_clk_table = sdc1_sup_clk_rates,
.sup_clk_cnt = ARRAY_SIZE(sdc1_sup_clk_rates),
.nonremovable = 1,
.vreg_data = &mmc_slot_vreg_data[SDCC1],
.pin_data = &mmc_slot_pin_data[SDCC1],
.mpm_sdiowakeup_int = MSM_MPM_PIN_SDC1_DAT1,
.msm_bus_voting_data = &sps_to_ddr_bus_voting_data,
.uhs_caps2 = MMC_CAP2_HS200_1_8V_SDR,
};
#endif
#ifdef CONFIG_MMC_MSM_SDC3_SUPPORT
static struct mmc_platform_data msm8960_sdc3_data = {
.ocr_mask = MMC_VDD_27_28 | MMC_VDD_28_29,
.mmc_bus_width = MMC_CAP_4_BIT_DATA,
.sup_clk_table = sdc3_sup_clk_rates,
.sup_clk_cnt = ARRAY_SIZE(sdc3_sup_clk_rates),
#ifdef CONFIG_MMC_MSM_SDC3_WP_SUPPORT
/*TODO: Insert right replacement for PM8038 */
#ifndef MSM8930_PHASE_2
.wpswitch_gpio = PM8921_GPIO_PM_TO_SYS(16),
#else
.wpswitch_gpio = 66,
.is_wpswitch_active_low = true,
#endif
#endif
.vreg_data = &mmc_slot_vreg_data[SDCC3],
.pin_data = &mmc_slot_pin_data[SDCC3],
/*TODO: Insert right replacement for PM8038 */
#ifndef MSM8930_PHASE_2
.status_gpio = PM8921_GPIO_PM_TO_SYS(26),
.status_irq = PM8921_GPIO_IRQ(PM8921_IRQ_BASE, 26),
#else
.status_gpio = 94,
.status_irq = MSM_GPIO_TO_INT(94),
#endif
.irq_flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
.is_status_gpio_active_low = true,
.xpc_cap = 1,
.uhs_caps = (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_DDR50 |
MMC_CAP_UHS_SDR104 | MMC_CAP_MAX_CURRENT_800),
.mpm_sdiowakeup_int = MSM_MPM_PIN_SDC3_DAT1,
.msm_bus_voting_data = &sps_to_ddr_bus_voting_data,
};
#endif
void __init msm8930_init_mmc(void)
{
#ifdef CONFIG_MMC_MSM_SDC1_SUPPORT
/*
* When eMMC runs in DDR mode on CDP platform, we have
* seen instability due to DATA CRC errors. These errors are
* attributed to long physical path between MSM and eMMC on CDP.
* So let's not enable the DDR mode on CDP platform but let other
* platforms take advantage of eMMC DDR mode.
*/
if (!machine_is_msm8930_cdp())
msm8960_sdc1_data.uhs_caps |= (MMC_CAP_1_8V_DDR |
MMC_CAP_UHS_DDR50);
/* SDC1 : eMMC card connected */
msm_add_sdcc(1, &msm8960_sdc1_data);
#endif
#ifdef CONFIG_MMC_MSM_SDC3_SUPPORT
/*
* All 8930 platform boards using the 1.2 SoC have been reworked so that
* the sd card detect line's esd circuit is no longer powered by the sd
* card's voltage regulator. So this means we can turn the regulator off
* to save power without affecting the sd card detect functionality.
* This change to the boards will be true for newer versions of the SoC
* as well.
*/
if (SOCINFO_VERSION_MAJOR(socinfo_get_version()) == 1 &&
SOCINFO_VERSION_MINOR(socinfo_get_version()) < 2) {
msm8960_sdc3_data.vreg_data->vdd_data->always_on = true;
msm8960_sdc3_data.vreg_data->vdd_data->reset_at_init = true;
}
/* SDC3: External card slot */
if (!machine_is_msm8930_cdp()) {
msm8960_sdc3_data.wpswitch_gpio = 0;
msm8960_sdc3_data.is_wpswitch_active_low = false;
}
msm_add_sdcc(3, &msm8960_sdc3_data);
#endif
}