+++ /dev/null
-/* linux/arch/arm/mach-msm/board-trout-mmc.c
-** Author: Brian Swetland <swetland@google.com>
-*/
-#include <linux/gpio.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/mmc/host.h>
-#include <linux/mmc/sdio_ids.h>
-#include <linux/err.h>
-#include <linux/debugfs.h>
-
-#include <asm/io.h>
-
-#include <mach/vreg.h>
-
-#include <linux/platform_data/mmc-msm_sdcc.h>
-
-#include "devices.h"
-
-#include "board-trout.h"
-
-#include "proc_comm.h"
-
-#define DEBUG_SDSLOT_VDD 1
-
-/* ---- COMMON ---- */
-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);
- }
-}
-
-/* ---- SDCARD ---- */
-
-static uint32_t sdcard_on_gpio_table[] = {
- PCOM_GPIO_CFG(62, 2, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
- PCOM_GPIO_CFG(63, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
- PCOM_GPIO_CFG(64, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* DAT3 */
- PCOM_GPIO_CFG(65, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* DAT2 */
- PCOM_GPIO_CFG(66, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
- PCOM_GPIO_CFG(67, 2, 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 uint opt_disable_sdcard;
-
-static int __init trout_disablesdcard_setup(char *str)
-{
- int cal = simple_strtol(str, NULL, 0);
-
- opt_disable_sdcard = cal;
- return 1;
-}
-
-__setup("board_trout.disable_sdcard=", trout_disablesdcard_setup);
-
-static struct vreg *vreg_sdslot; /* SD slot power */
-
-struct mmc_vdd_xlat {
- int mask;
- int level;
-};
-
-static struct mmc_vdd_xlat 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 unsigned int sdslot_vdd = 0xffffffff;
-static unsigned int sdslot_vreg_enabled;
-
-static uint32_t trout_sdslot_switchvdd(struct device *dev, unsigned int vdd)
-{
- int i, rc;
-
- BUG_ON(!vreg_sdslot);
-
- if (vdd == sdslot_vdd)
- return 0;
-
- sdslot_vdd = vdd;
-
- if (vdd == 0) {
-#if DEBUG_SDSLOT_VDD
- printk("%s: Disabling SD slot power\n", __func__);
-#endif
- config_gpio_table(sdcard_off_gpio_table,
- ARRAY_SIZE(sdcard_off_gpio_table));
- vreg_disable(vreg_sdslot);
- sdslot_vreg_enabled = 0;
- return 0;
- }
-
- if (!sdslot_vreg_enabled) {
- rc = vreg_enable(vreg_sdslot);
- if (rc) {
- printk(KERN_ERR "%s: Error enabling vreg (%d)\n",
- __func__, rc);
- }
- 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)) {
-#if DEBUG_SDSLOT_VDD
- printk("%s: Setting level to %u\n",
- __func__, mmc_vdd_table[i].level);
-#endif
- rc = vreg_set_level(vreg_sdslot,
- mmc_vdd_table[i].level);
- if (rc) {
- printk(KERN_ERR
- "%s: Error setting vreg level (%d)\n",
- __func__, rc);
- }
- return 0;
- }
- }
-
- printk(KERN_ERR "%s: Invalid VDD %d specified\n", __func__, vdd);
- return 0;
-}
-
-static unsigned int trout_sdslot_status(struct device *dev)
-{
- unsigned int status;
-
- status = (unsigned int) gpio_get_value(TROUT_GPIO_SDMC_CD_N);
- return (!status);
-}
-
-#define TROUT_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
-
-static struct msm_mmc_platform_data trout_sdslot_data = {
- .ocr_mask = TROUT_MMC_VDD,
- .status = trout_sdslot_status,
- .translate_vdd = trout_sdslot_switchvdd,
-};
-
-int __init trout_init_mmc(unsigned int sys_rev)
-{
- sdslot_vreg_enabled = 0;
-
- vreg_sdslot = vreg_get(0, "gp6");
- if (IS_ERR(vreg_sdslot))
- return PTR_ERR(vreg_sdslot);
-
- irq_set_irq_wake(TROUT_GPIO_TO_INT(TROUT_GPIO_SDMC_CD_N), 1);
-
- if (!opt_disable_sdcard)
- msm_add_sdcc(2, &trout_sdslot_data,
- TROUT_GPIO_TO_INT(TROUT_GPIO_SDMC_CD_N), 0);
- else
- printk(KERN_INFO "trout: SD-Card interface disabled\n");
- return 0;
-}
-
projects / firefly-linux-kernel-4.4.55.git / blobdiff