414 lines
12 KiB
C
414 lines
12 KiB
C
/* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/regulator/consumer.h>
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#include <linux/gpio.h>
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#include <asm/mach-types.h>
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#include <asm/mach/mmc.h>
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#include <mach/gpiomux.h>
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#include <mach/board.h>
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#include "devices.h"
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#include "pm.h"
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#include "board-msm7627a.h"
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#if (defined(CONFIG_MMC_MSM_SDC1_SUPPORT)\
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|| defined(CONFIG_MMC_MSM_SDC2_SUPPORT)\
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|| defined(CONFIG_MMC_MSM_SDC3_SUPPORT)\
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|| defined(CONFIG_MMC_MSM_SDC4_SUPPORT))
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#define MAX_SDCC_CONTROLLER 4
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static unsigned long vreg_sts, gpio_sts;
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struct sdcc_gpio {
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struct msm_gpio *cfg_data;
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uint32_t size;
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struct msm_gpio *sleep_cfg_data;
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};
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/**
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* Due to insufficient drive strengths for SDC GPIO lines some old versioned
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* SD/MMC cards may cause data CRC errors. Hence, set optimal values
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* for SDC slots based on timing closure and marginality. SDC1 slot
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* require higher value since it should handle bad signal quality due
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* to size of T-flash adapters.
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*/
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static struct msm_gpio sdc1_cfg_data[] = {
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{GPIO_CFG(51, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_14MA),
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"sdc1_dat_3"},
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{GPIO_CFG(52, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_14MA),
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"sdc1_dat_2"},
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{GPIO_CFG(53, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_14MA),
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"sdc1_dat_1"},
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{GPIO_CFG(54, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_14MA),
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"sdc1_dat_0"},
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{GPIO_CFG(55, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_14MA),
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"sdc1_cmd"},
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{GPIO_CFG(56, 1, GPIO_CFG_OUTPUT, GPIO_CFG_NO_PULL, GPIO_CFG_14MA),
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"sdc1_clk"},
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};
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static struct msm_gpio sdc2_cfg_data[] = {
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{GPIO_CFG(62, 2, GPIO_CFG_OUTPUT, GPIO_CFG_NO_PULL, GPIO_CFG_8MA),
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"sdc2_clk"},
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{GPIO_CFG(63, 2, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc2_cmd"},
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{GPIO_CFG(64, 2, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc2_dat_3"},
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{GPIO_CFG(65, 2, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc2_dat_2"},
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{GPIO_CFG(66, 2, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc2_dat_1"},
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{GPIO_CFG(67, 2, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc2_dat_0"},
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};
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static struct msm_gpio sdc2_sleep_cfg_data[] = {
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{GPIO_CFG(62, 0, GPIO_CFG_INPUT, GPIO_CFG_NO_PULL, GPIO_CFG_2MA),
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"sdc2_clk"},
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{GPIO_CFG(63, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_UP, GPIO_CFG_2MA),
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"sdc2_cmd"},
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{GPIO_CFG(64, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_UP, GPIO_CFG_2MA),
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"sdc2_dat_3"},
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{GPIO_CFG(65, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_UP, GPIO_CFG_2MA),
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"sdc2_dat_2"},
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{GPIO_CFG(66, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_UP, GPIO_CFG_2MA),
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"sdc2_dat_1"},
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{GPIO_CFG(67, 0, GPIO_CFG_INPUT, GPIO_CFG_PULL_UP, GPIO_CFG_2MA),
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"sdc2_dat_0"},
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};
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static struct msm_gpio sdc3_cfg_data[] = {
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{GPIO_CFG(88, 1, GPIO_CFG_OUTPUT, GPIO_CFG_NO_PULL, GPIO_CFG_8MA),
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"sdc3_clk"},
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{GPIO_CFG(89, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc3_cmd"},
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{GPIO_CFG(90, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc3_dat_3"},
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{GPIO_CFG(91, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc3_dat_2"},
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{GPIO_CFG(92, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc3_dat_1"},
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{GPIO_CFG(93, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc3_dat_0"},
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#ifdef CONFIG_MMC_MSM_SDC3_8_BIT_SUPPORT
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{GPIO_CFG(19, 3, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc3_dat_7"},
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{GPIO_CFG(20, 3, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc3_dat_6"},
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{GPIO_CFG(21, 3, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc3_dat_5"},
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{GPIO_CFG(108, 3, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc3_dat_4"},
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#endif
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};
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static struct msm_gpio sdc4_cfg_data[] = {
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{GPIO_CFG(19, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc4_dat_3"},
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{GPIO_CFG(20, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc4_dat_2"},
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{GPIO_CFG(21, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc4_dat_1"},
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{GPIO_CFG(107, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc4_cmd"},
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{GPIO_CFG(108, 1, GPIO_CFG_OUTPUT, GPIO_CFG_PULL_UP, GPIO_CFG_10MA),
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"sdc4_dat_0"},
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{GPIO_CFG(109, 1, GPIO_CFG_OUTPUT, GPIO_CFG_NO_PULL, GPIO_CFG_8MA),
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"sdc4_clk"},
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};
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static struct sdcc_gpio sdcc_cfg_data[] = {
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{
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.cfg_data = sdc1_cfg_data,
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.size = ARRAY_SIZE(sdc1_cfg_data),
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},
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{
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.cfg_data = sdc2_cfg_data,
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.size = ARRAY_SIZE(sdc2_cfg_data),
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.sleep_cfg_data = sdc2_sleep_cfg_data,
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},
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{
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.cfg_data = sdc3_cfg_data,
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.size = ARRAY_SIZE(sdc3_cfg_data),
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},
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{
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.cfg_data = sdc4_cfg_data,
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.size = ARRAY_SIZE(sdc4_cfg_data),
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},
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};
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static int gpio_sdc1_hw_det = 85;
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static void gpio_sdc1_config(void)
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{
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if (machine_is_msm7627a_qrd1() || machine_is_msm7627a_evb()
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|| machine_is_msm8625_evb()
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|| machine_is_msm7627a_qrd3()
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|| machine_is_msm8625_qrd7())
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gpio_sdc1_hw_det = 42;
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}
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static struct regulator *sdcc_vreg_data[MAX_SDCC_CONTROLLER];
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static int msm_sdcc_setup_gpio(int dev_id, unsigned int enable)
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{
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int rc = 0;
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struct sdcc_gpio *curr;
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curr = &sdcc_cfg_data[dev_id - 1];
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if (!(test_bit(dev_id, &gpio_sts)^enable))
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return rc;
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if (enable) {
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set_bit(dev_id, &gpio_sts);
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rc = msm_gpios_request_enable(curr->cfg_data, curr->size);
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if (rc)
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pr_err("%s: Failed to turn on GPIOs for slot %d\n",
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__func__, dev_id);
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} else {
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clear_bit(dev_id, &gpio_sts);
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if (curr->sleep_cfg_data) {
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rc = msm_gpios_enable(curr->sleep_cfg_data, curr->size);
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msm_gpios_free(curr->sleep_cfg_data, curr->size);
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return rc;
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}
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msm_gpios_disable_free(curr->cfg_data, curr->size);
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}
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return rc;
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}
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static int msm_sdcc_setup_vreg(int dev_id, unsigned int enable)
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{
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int rc = 0;
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struct regulator *curr = sdcc_vreg_data[dev_id - 1];
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if (test_bit(dev_id, &vreg_sts) == enable)
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return 0;
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if (!curr)
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return -ENODEV;
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if (IS_ERR(curr))
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return PTR_ERR(curr);
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if (enable) {
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set_bit(dev_id, &vreg_sts);
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rc = regulator_enable(curr);
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if (rc)
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pr_err("%s: could not enable regulator: %d\n",
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__func__, rc);
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} else {
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clear_bit(dev_id, &vreg_sts);
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rc = regulator_disable(curr);
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if (rc)
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pr_err("%s: could not disable regulator: %d\n",
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__func__, rc);
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}
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return rc;
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}
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static uint32_t msm_sdcc_setup_power(struct device *dv, unsigned int vdd)
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{
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int rc = 0;
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struct platform_device *pdev;
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pdev = container_of(dv, struct platform_device, dev);
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rc = msm_sdcc_setup_gpio(pdev->id, !!vdd);
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if (rc)
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goto out;
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rc = msm_sdcc_setup_vreg(pdev->id, !!vdd);
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out:
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return rc;
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}
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#ifdef CONFIG_MMC_MSM_SDC1_SUPPORT
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static unsigned int msm7627a_sdcc_slot_status(struct device *dev)
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{
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int status;
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status = gpio_tlmm_config(GPIO_CFG(gpio_sdc1_hw_det, 2, GPIO_CFG_INPUT,
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GPIO_CFG_PULL_UP, GPIO_CFG_8MA),
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GPIO_CFG_ENABLE);
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if (status)
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pr_err("%s:Failed to configure tlmm for GPIO %d\n", __func__,
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gpio_sdc1_hw_det);
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status = gpio_request(gpio_sdc1_hw_det, "SD_HW_Detect");
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if (status) {
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pr_err("%s:Failed to request GPIO %d\n", __func__,
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gpio_sdc1_hw_det);
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} else {
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status = gpio_direction_input(gpio_sdc1_hw_det);
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if (!status) {
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if (machine_is_msm7627a_qrd1() ||
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machine_is_msm7627a_evb() ||
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machine_is_msm8625_evb() ||
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machine_is_msm7627a_qrd3() ||
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machine_is_msm8625_qrd7())
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status = !gpio_get_value(gpio_sdc1_hw_det);
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else
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status = gpio_get_value(gpio_sdc1_hw_det);
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}
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gpio_free(gpio_sdc1_hw_det);
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}
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return status;
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}
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static struct mmc_platform_data sdc1_plat_data = {
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.ocr_mask = MMC_VDD_28_29,
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.translate_vdd = msm_sdcc_setup_power,
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.mmc_bus_width = MMC_CAP_4_BIT_DATA,
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.msmsdcc_fmin = 144000,
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.msmsdcc_fmid = 24576000,
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.msmsdcc_fmax = 49152000,
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.status = msm7627a_sdcc_slot_status,
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.irq_flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
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};
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#endif
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#ifdef CONFIG_MMC_MSM_SDC2_SUPPORT
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static struct mmc_platform_data sdc2_plat_data = {
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/*
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* SDC2 supports only 1.8V, claim for 2.85V range is just
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* for allowing buggy cards who advertise 2.8V even though
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* they can operate at 1.8V supply.
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*/
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.ocr_mask = MMC_VDD_28_29 | MMC_VDD_165_195,
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.translate_vdd = msm_sdcc_setup_power,
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.mmc_bus_width = MMC_CAP_4_BIT_DATA,
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.sdiowakeup_irq = MSM_GPIO_TO_INT(66),
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.msmsdcc_fmin = 144000,
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.msmsdcc_fmid = 24576000,
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.msmsdcc_fmax = 49152000,
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#ifdef CONFIG_MMC_MSM_SDC2_DUMMY52_REQUIRED
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.dummy52_required = 1,
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#endif
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};
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#endif
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#ifdef CONFIG_MMC_MSM_SDC3_SUPPORT
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static struct mmc_platform_data sdc3_plat_data = {
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.ocr_mask = MMC_VDD_28_29,
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.translate_vdd = msm_sdcc_setup_power,
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#ifdef CONFIG_MMC_MSM_SDC3_8_BIT_SUPPORT
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.mmc_bus_width = MMC_CAP_8_BIT_DATA,
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#else
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.mmc_bus_width = MMC_CAP_4_BIT_DATA,
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#endif
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.msmsdcc_fmin = 144000,
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.msmsdcc_fmid = 24576000,
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.msmsdcc_fmax = 49152000,
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.nonremovable = 1,
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};
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#endif
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#if (defined(CONFIG_MMC_MSM_SDC4_SUPPORT)\
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&& !defined(CONFIG_MMC_MSM_SDC3_8_BIT_SUPPORT))
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static struct mmc_platform_data sdc4_plat_data = {
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.ocr_mask = MMC_VDD_28_29,
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.translate_vdd = msm_sdcc_setup_power,
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.mmc_bus_width = MMC_CAP_4_BIT_DATA,
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.msmsdcc_fmin = 144000,
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.msmsdcc_fmid = 24576000,
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.msmsdcc_fmax = 49152000,
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};
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#endif
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static int __init mmc_regulator_init(int sdcc_no, const char *supply, int uV)
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{
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int rc;
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BUG_ON(sdcc_no < 1 || sdcc_no > 4);
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sdcc_no--;
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sdcc_vreg_data[sdcc_no] = regulator_get(NULL, supply);
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if (IS_ERR(sdcc_vreg_data[sdcc_no])) {
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rc = PTR_ERR(sdcc_vreg_data[sdcc_no]);
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pr_err("%s: could not get regulator \"%s\": %d\n",
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__func__, supply, rc);
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goto out;
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}
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rc = regulator_set_voltage(sdcc_vreg_data[sdcc_no], uV, uV);
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if (rc) {
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pr_err("%s: could not set voltage for \"%s\" to %d uV: %d\n",
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__func__, supply, uV, rc);
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goto reg_free;
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}
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return rc;
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reg_free:
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regulator_put(sdcc_vreg_data[sdcc_no]);
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out:
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sdcc_vreg_data[sdcc_no] = NULL;
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return rc;
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}
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void __init msm7627a_init_mmc(void)
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{
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/* eMMC slot */
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#ifdef CONFIG_MMC_MSM_SDC3_SUPPORT
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/* There is no eMMC on SDC3 for QRD3 based devices */
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if (!(machine_is_msm7627a_qrd3() || machine_is_msm8625_qrd7())) {
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if (mmc_regulator_init(3, "emmc", 3000000))
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return;
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/*
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* On 7x25A FFA data CRC errors are seen, which are
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* probably due to the proximity of SIM card and eMMC.
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* Hence, reducing the clock to 24.7Mhz from 49Mhz.
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*/
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if (machine_is_msm7625a_ffa())
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sdc3_plat_data.msmsdcc_fmax =
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sdc3_plat_data.msmsdcc_fmid;
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msm_add_sdcc(3, &sdc3_plat_data);
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}
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#endif
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/* Micro-SD slot */
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#ifdef CONFIG_MMC_MSM_SDC1_SUPPORT
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gpio_sdc1_config();
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if (mmc_regulator_init(1, "mmc", 2850000))
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return;
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/* 8x25 EVT do not use hw detector */
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if (!((machine_is_msm8625_evt() || machine_is_qrd_skud_prime())))
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sdc1_plat_data.status_irq = MSM_GPIO_TO_INT(gpio_sdc1_hw_det);
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if (machine_is_msm8625_evt() || machine_is_qrd_skud_prime())
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sdc1_plat_data.status = NULL;
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msm_add_sdcc(1, &sdc1_plat_data);
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#endif
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/* SDIO WLAN slot */
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#ifdef CONFIG_MMC_MSM_SDC2_SUPPORT
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if (mmc_regulator_init(2, "smps3", 1800000))
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return;
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msm_add_sdcc(2, &sdc2_plat_data);
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#endif
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/* Not Used */
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#if (defined(CONFIG_MMC_MSM_SDC4_SUPPORT)\
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&& !defined(CONFIG_MMC_MSM_SDC3_8_BIT_SUPPORT))
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/* There is no SDC4 for QRD3/7 based devices */
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if (!(machine_is_msm7627a_qrd3() || machine_is_msm8625_qrd7())) {
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if (mmc_regulator_init(4, "smps3", 1800000))
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return;
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msm_add_sdcc(4, &sdc4_plat_data);
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}
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#endif
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}
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#endif
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