396 lines
10 KiB
C
396 lines
10 KiB
C
/* linux/arch/arm/mach-msm/board-htcleo-mmc.c
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*
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* Copyright (C) 2009 Google, Inc.
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* Copyright (C) 2009 HTC Corporation
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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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/delay.h>
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#include <linux/debugfs.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/sdio_ids.h>
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#include <linux/platform_device.h>
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#include <asm/gpio.h>
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#include <asm/io.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/vreg.h>
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#include <mach/gpio.h>
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#include "board-htcleo.h"
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#include "devices.h"
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#include "proc_comm.h"
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#undef HTCLEO_DEBUG_MMC
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static bool opt_disable_sdcard;
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static int __init htcleo_disablesdcard_setup(char *str)
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{
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opt_disable_sdcard = (bool)simple_strtol(str, NULL, 0);
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return 1;
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}
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__setup("board_htcleo.disable_sdcard=", htcleo_disablesdcard_setup);
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static uint32_t sdcard_on_gpio_table[] =
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{
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PCOM_GPIO_CFG(62, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
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PCOM_GPIO_CFG(63, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
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PCOM_GPIO_CFG(64, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT3 */
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PCOM_GPIO_CFG(65, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT2 */
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PCOM_GPIO_CFG(66, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
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PCOM_GPIO_CFG(67, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT0 */
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};
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static uint32_t sdcard_off_gpio_table[] =
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{
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PCOM_GPIO_CFG(62, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CLK */
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PCOM_GPIO_CFG(63, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CMD */
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PCOM_GPIO_CFG(64, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT3 */
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PCOM_GPIO_CFG(65, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT2 */
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PCOM_GPIO_CFG(66, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT1 */
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PCOM_GPIO_CFG(67, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT0 */
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};
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static uint32_t sdslot_vdd = 0xffffffff;
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static uint32_t sdslot_vreg_enabled;
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static struct {
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int mask;
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int level;
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} mmc_vdd_table[] = {
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{ MMC_VDD_165_195, 1800 },
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{ MMC_VDD_20_21, 2050 },
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{ MMC_VDD_21_22, 2150 },
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{ MMC_VDD_22_23, 2250 },
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{ MMC_VDD_23_24, 2350 },
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{ MMC_VDD_24_25, 2450 },
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{ MMC_VDD_25_26, 2550 },
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{ MMC_VDD_26_27, 2650 },
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{ MMC_VDD_27_28, 2750 },
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{ MMC_VDD_28_29, 2850 },
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{ MMC_VDD_29_30, 2950 },
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};
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static uint32_t htcleo_sdslot_switchvdd(struct device *dev, unsigned int vdd)
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{
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// We have to find the right vreg Interface on Leo
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int i;
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int ret = 0;
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if (vdd == sdslot_vdd)
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return 0;
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sdslot_vdd = vdd;
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if (vdd == 0) {
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config_gpio_table(sdcard_off_gpio_table,
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ARRAY_SIZE(sdcard_off_gpio_table));
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//htcleo_pm_set_vreg(0, 0x17);
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sdslot_vreg_enabled = 0;
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return 0;
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}
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if (!sdslot_vreg_enabled) {
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// htcleo_pm_set_vreg(1, 0x17);
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config_gpio_table(sdcard_on_gpio_table,
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ARRAY_SIZE(sdcard_on_gpio_table));
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sdslot_vreg_enabled = 1;
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}
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for (i = 0; i < ARRAY_SIZE(mmc_vdd_table); i++) {
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if (mmc_vdd_table[i].mask != (1 << vdd))
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continue;
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// ret = vreg_set_level(sdslot_vreg, mmc_vdd_table[i].level);
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if (ret)
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pr_err("%s: Error setting level (%d)\n", __func__, ret);
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return 0;
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}
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pr_err("%s: Invalid VDD (%d) specified\n", __func__, vdd);
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return 0;
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}
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static unsigned int htcleo_sdslot_status_rev0(struct device *dev)
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{
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return !gpio_get_value(HTCLEO_GPIO_SDMC_CD_REV0_N);
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}
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#define HTCLEO_MMC_VDD (MMC_VDD_165_195 | MMC_VDD_20_21 | \
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MMC_VDD_21_22 | MMC_VDD_22_23 | \
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MMC_VDD_23_24 | MMC_VDD_24_25 | \
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MMC_VDD_25_26 | MMC_VDD_26_27 | \
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MMC_VDD_27_28 | MMC_VDD_28_29 | \
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MMC_VDD_29_30)
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static struct mmc_platform_data htcleo_sdslot_data =
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{
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.ocr_mask = HTCLEO_MMC_VDD,
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.status = htcleo_sdslot_status_rev0,
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.register_status_notify = NULL,
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.translate_vdd = htcleo_sdslot_switchvdd,
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};
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static uint32_t wifi_on_gpio_table[] =
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{
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PCOM_GPIO_CFG(51, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT3 */
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PCOM_GPIO_CFG(52, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT2 */
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PCOM_GPIO_CFG(53, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
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PCOM_GPIO_CFG(54, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT0 */
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PCOM_GPIO_CFG(55, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
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PCOM_GPIO_CFG(56, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
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PCOM_GPIO_CFG(152, 0, GPIO_INPUT, GPIO_NO_PULL, GPIO_4MA), /* WLAN IRQ */
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};
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static uint32_t wifi_off_gpio_table[] =
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{
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PCOM_GPIO_CFG(51, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT3 */
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PCOM_GPIO_CFG(52, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT2 */
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PCOM_GPIO_CFG(53, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT1 */
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PCOM_GPIO_CFG(54, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT0 */
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PCOM_GPIO_CFG(55, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CMD */
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PCOM_GPIO_CFG(56, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CLK */
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PCOM_GPIO_CFG(152, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* WLAN IRQ */
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};
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/* BCM4329 returns wrong sdio_vsn(1) when we read cccr,
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* we use predefined value (sdio_vsn=2) here to initial sdio driver well
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*/
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static struct embedded_sdio_data htcleo_wifi_emb_data = {
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.cccr = {
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.sdio_vsn = 2,
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.multi_block = 1,
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.low_speed = 0,
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.wide_bus = 0,
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.high_power = 1,
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.high_speed = 1,
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},
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};
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static int htcleo_wifi_cd = 0; /* WIFI virtual 'card detect' status */
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static void (*wifi_status_cb)(int card_present, void *dev_id);
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static void *wifi_status_cb_devid;
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static int htcleo_wifi_status_register(
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void (*callback)(int card_present, void *dev_id),
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void *dev_id)
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{
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if (wifi_status_cb)
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return -EAGAIN;
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wifi_status_cb = callback;
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wifi_status_cb_devid = dev_id;
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return 0;
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}
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static unsigned int htcleo_wifi_status(struct device *dev)
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{
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return htcleo_wifi_cd;
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}
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static struct mmc_platform_data htcleo_wifi_data = {
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.ocr_mask = MMC_VDD_28_29,
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.status = htcleo_wifi_status,
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.register_status_notify = htcleo_wifi_status_register,
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.embedded_sdio = &htcleo_wifi_emb_data,
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};
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int htcleo_wifi_set_carddetect(int val)
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{
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pr_info("%s: %d\n", __func__, val);
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htcleo_wifi_cd = val;
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if (wifi_status_cb) {
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wifi_status_cb(val, wifi_status_cb_devid);
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} else
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pr_warning("%s: Nobody to notify\n", __func__);
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return 0;
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}
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static int htcleo_wifi_power_state;
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int htcleo_wifi_power(int on)
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{
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printk("%s: %d\n", __func__, on);
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if (on) {
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config_gpio_table(wifi_on_gpio_table,ARRAY_SIZE(wifi_on_gpio_table));
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mdelay(50);
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} else {
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config_gpio_table(wifi_off_gpio_table, ARRAY_SIZE(wifi_off_gpio_table));
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}
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mdelay(100);
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gpio_set_value(HTCLEO_GPIO_WIFI_SHUTDOWN_N, on); /* WIFI_SHUTDOWN */
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mdelay(200);
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htcleo_wifi_power_state = on;
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return 0;
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}
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static int htcleo_wifi_reset_state;
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int htcleo_wifi_reset(int on)
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{
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printk("%s: do nothing\n", __func__);
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htcleo_wifi_reset_state = on;
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return 0;
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}
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int msm_add_sdcc(unsigned int controller, struct mmc_platform_data *plat,
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unsigned int stat_irq, unsigned long stat_irq_flags);
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int __init htcleo_init_mmc(unsigned debug_uart)
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{
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uint32_t id;
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printk("%s()+\n", __func__);
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/* initial WIFI_SHUTDOWN# */
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id = PCOM_GPIO_CFG(HTCLEO_GPIO_WIFI_SHUTDOWN_N, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA),
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// msm_gpio_set_function(id);
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msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &id, 0);
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msm_add_sdcc(1, &htcleo_wifi_data, 0, 0);
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if (debug_uart) {
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pr_info("%s: sdcard disabled due to debug uart\n", __func__);
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goto done;
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}
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if (opt_disable_sdcard) {
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pr_info("%s: sdcard disabled on cmdline\n", __func__);
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goto done;
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}
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sdslot_vreg_enabled = 0;
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set_irq_wake(MSM_GPIO_TO_INT(HTCLEO_GPIO_SDMC_CD_REV0_N), 1);
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msm_add_sdcc(2, &htcleo_sdslot_data,
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MSM_GPIO_TO_INT(HTCLEO_GPIO_SDMC_CD_REV0_N),
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IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE);
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done:
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printk("%s()-\n", __func__);
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return 0;
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}
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#if defined(HTCLEO_DEBUG_MMC) && defined(CONFIG_DEBUG_FS)
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static int htcleommc_dbg_wifi_reset_set(void *data, u64 val)
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{
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htcleo_wifi_reset((int) val);
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return 0;
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}
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static int htcleommc_dbg_wifi_reset_get(void *data, u64 *val)
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{
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*val = htcleo_wifi_reset_state;
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return 0;
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}
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static int htcleommc_dbg_wifi_cd_set(void *data, u64 val)
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{
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htcleo_wifi_set_carddetect((int) val);
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return 0;
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}
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static int htcleommc_dbg_wifi_cd_get(void *data, u64 *val)
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{
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*val = htcleo_wifi_cd;
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return 0;
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}
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static int htcleommc_dbg_wifi_pwr_set(void *data, u64 val)
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{
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htcleo_wifi_power((int) val);
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return 0;
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}
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static int htcleommc_dbg_wifi_pwr_get(void *data, u64 *val)
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{
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*val = htcleo_wifi_power_state;
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return 0;
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}
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static int htcleommc_dbg_sd_pwr_set(void *data, u64 val)
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{
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htcleo_sdslot_switchvdd(NULL, (unsigned int) val);
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return 0;
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}
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static int htcleommc_dbg_sd_pwr_get(void *data, u64 *val)
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{
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*val = sdslot_vdd;
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return 0;
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}
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static int htcleommc_dbg_sd_cd_set(void *data, u64 val)
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{
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return -ENOSYS;
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}
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static int htcleommc_dbg_sd_cd_get(void *data, u64 *val)
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{
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*val = htcleo_sdslot_data.status(NULL);
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return 0;
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}
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DEFINE_SIMPLE_ATTRIBUTE(htcleommc_dbg_wifi_reset_fops,
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htcleommc_dbg_wifi_reset_get,
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htcleommc_dbg_wifi_reset_set, "%llu\n");
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DEFINE_SIMPLE_ATTRIBUTE(htcleommc_dbg_wifi_cd_fops,
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htcleommc_dbg_wifi_cd_get,
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htcleommc_dbg_wifi_cd_set, "%llu\n");
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DEFINE_SIMPLE_ATTRIBUTE(htcleommc_dbg_wifi_pwr_fops,
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htcleommc_dbg_wifi_pwr_get,
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htcleommc_dbg_wifi_pwr_set, "%llu\n");
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DEFINE_SIMPLE_ATTRIBUTE(htcleommc_dbg_sd_pwr_fops,
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htcleommc_dbg_sd_pwr_get,
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htcleommc_dbg_sd_pwr_set, "%llu\n");
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DEFINE_SIMPLE_ATTRIBUTE(htcleommc_dbg_sd_cd_fops,
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htcleommc_dbg_sd_cd_get,
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htcleommc_dbg_sd_cd_set, "%llu\n");
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static int __init htcleommc_dbg_init(void)
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{
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struct dentry *dent;
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if (!machine_is_htcleo() && !machine_is_htcleo())
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return 0;
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dent = debugfs_create_dir("htcleo_mmc_dbg", 0);
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if (IS_ERR(dent))
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return PTR_ERR(dent);
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debugfs_create_file("wifi_reset", 0644, dent, NULL,
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&htcleommc_dbg_wifi_reset_fops);
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debugfs_create_file("wifi_cd", 0644, dent, NULL,
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&htcleommc_dbg_wifi_cd_fops);
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debugfs_create_file("wifi_pwr", 0644, dent, NULL,
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&htcleommc_dbg_wifi_pwr_fops);
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debugfs_create_file("sd_pwr", 0644, dent, NULL,
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&htcleommc_dbg_sd_pwr_fops);
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debugfs_create_file("sd_cd", 0644, dent, NULL,
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&htcleommc_dbg_sd_cd_fops);
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return 0;
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}
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device_initcall(htcleommc_dbg_init);
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#endif
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