439 lines
11 KiB
C
439 lines
11 KiB
C
/* linux/arch/arm/mach-msm/board-trout-mmc.c
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** Author: Brian Swetland <swetland@google.com>
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/delay.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/err.h>
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#include <linux/debugfs.h>
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#include <asm/gpio.h>
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#include <asm/io.h>
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#include <mach/vreg.h>
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#include <mach/htc_pwrsink.h>
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#include <asm/mach/mmc.h>
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#include "devices.h"
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#include "board-trout.h"
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#include "proc_comm.h"
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#define DEBUG_SDSLOT_VDD 1
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extern 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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/* ---- COMMON ---- */
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static void config_gpio_table(uint32_t *table, int len)
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{
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int n;
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unsigned id;
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for(n = 0; n < len; n++) {
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id = table[n];
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msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &id, 0);
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}
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}
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/* ---- SDCARD ---- */
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static uint32_t sdcard_on_gpio_table[] = {
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PCOM_GPIO_CFG(62, 2, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
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PCOM_GPIO_CFG(63, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
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PCOM_GPIO_CFG(64, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* DAT3 */
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PCOM_GPIO_CFG(65, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* DAT2 */
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PCOM_GPIO_CFG(66, 2, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
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PCOM_GPIO_CFG(67, 2, 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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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 uint opt_disable_sdcard;
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static int __init trout_disablesdcard_setup(char *str)
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{
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int cal = simple_strtol(str, NULL, 0);
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opt_disable_sdcard = cal;
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return 1;
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}
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__setup("board_trout.disable_sdcard=", trout_disablesdcard_setup);
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static struct vreg *vreg_sdslot; /* SD slot power */
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struct mmc_vdd_xlat {
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int mask;
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int level;
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};
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static struct mmc_vdd_xlat 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 unsigned int sdslot_vdd = 0xffffffff;
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static unsigned int sdslot_vreg_enabled;
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static uint32_t trout_sdslot_switchvdd(struct device *dev, unsigned int vdd)
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{
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int i, rc;
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BUG_ON(!vreg_sdslot);
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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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#if DEBUG_SDSLOT_VDD
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printk("%s: Disabling SD slot power\n", __func__);
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#endif
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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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vreg_disable(vreg_sdslot);
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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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rc = vreg_enable(vreg_sdslot);
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if (rc) {
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printk(KERN_ERR "%s: Error enabling vreg (%d)\n",
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__func__, rc);
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}
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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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#if DEBUG_SDSLOT_VDD
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printk("%s: Setting level to %u\n",
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__func__, mmc_vdd_table[i].level);
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#endif
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rc = vreg_set_level(vreg_sdslot,
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mmc_vdd_table[i].level);
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if (rc) {
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printk(KERN_ERR
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"%s: Error setting vreg level (%d)\n",
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__func__, rc);
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}
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return 0;
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}
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}
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printk(KERN_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 trout_sdslot_status(struct device *dev)
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{
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unsigned int status;
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status = (unsigned int) gpio_get_value(TROUT_GPIO_SDMC_CD_N);
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return (!status);
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}
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#define TROUT_MMC_VDD MMC_VDD_165_195 | MMC_VDD_20_21 | MMC_VDD_21_22 \
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| MMC_VDD_22_23 | MMC_VDD_23_24 | MMC_VDD_24_25 \
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| MMC_VDD_25_26 | MMC_VDD_26_27 | MMC_VDD_27_28 \
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| MMC_VDD_28_29 | MMC_VDD_29_30
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static struct mmc_platform_data trout_sdslot_data = {
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.ocr_mask = TROUT_MMC_VDD,
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.status = trout_sdslot_status,
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.translate_vdd = trout_sdslot_switchvdd,
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};
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/* ---- WIFI ---- */
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static uint32_t wifi_on_gpio_table[] = {
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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(29, 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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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(29, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* WLAN IRQ */
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};
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static struct vreg *vreg_wifi_osc; /* WIFI 32khz oscilator */
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static int trout_wifi_cd = 0; /* WIFI virtual 'card detect' status */
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static struct sdio_embedded_func wifi_func = {
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.f_class = SDIO_CLASS_WLAN,
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.f_maxblksize = 512,
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};
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static struct embedded_sdio_data trout_wifi_emb_data = {
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.cis = {
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.vendor = 0x104c,
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.device = 0x9066,
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.blksize = 512,
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/*.max_dtr = 24000000, Max of chip - no worky on Trout */
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.max_dtr = 20000000,
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},
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.cccr = {
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.multi_block = 0,
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.low_speed = 0,
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.wide_bus = 1,
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.high_power = 0,
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.high_speed = 0,
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},
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.funcs = &wifi_func,
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.num_funcs = 1,
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};
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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 trout_wifi_status_register(void (*callback)(int card_present, void *dev_id), 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 trout_wifi_status(struct device *dev)
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{
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return trout_wifi_cd;
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}
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int trout_wifi_set_carddetect(int val)
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{
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printk("%s: %d\n", __func__, val);
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trout_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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printk(KERN_WARNING "%s: Nobody to notify\n", __func__);
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return 0;
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}
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#ifndef CONFIG_WIFI_CONTROL_FUNC
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EXPORT_SYMBOL(trout_wifi_set_carddetect);
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#endif
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static int trout_wifi_power_state;
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int trout_wifi_power(int on)
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{
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int rc;
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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,
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ARRAY_SIZE(wifi_on_gpio_table));
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rc = vreg_enable(vreg_wifi_osc);
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if (rc)
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return rc;
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htc_pwrsink_set(PWRSINK_WIFI, 70);
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} else {
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config_gpio_table(wifi_off_gpio_table,
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ARRAY_SIZE(wifi_off_gpio_table));
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htc_pwrsink_set(PWRSINK_WIFI, 0);
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}
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gpio_set_value( TROUT_GPIO_MAC_32K_EN, on);
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mdelay(100);
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gpio_set_value( TROUT_GPIO_WIFI_EN, on);
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mdelay(100);
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if (!on) {
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vreg_disable(vreg_wifi_osc);
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}
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trout_wifi_power_state = on;
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return 0;
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}
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#ifndef CONFIG_WIFI_CONTROL_FUNC
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EXPORT_SYMBOL(trout_wifi_power);
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#endif
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static int trout_wifi_reset_state;
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int trout_wifi_reset(int on)
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{
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printk("%s: %d\n", __func__, on);
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gpio_set_value( TROUT_GPIO_WIFI_PA_RESETX, !on );
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trout_wifi_reset_state = on;
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mdelay(50);
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return 0;
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}
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#ifndef CONFIG_WIFI_CONTROL_FUNC
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EXPORT_SYMBOL(trout_wifi_reset);
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#endif
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static struct mmc_platform_data trout_wifi_data = {
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.ocr_mask = MMC_VDD_28_29,
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.status = trout_wifi_status,
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.register_status_notify = trout_wifi_status_register,
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.embedded_sdio = &trout_wifi_emb_data,
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};
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int __init trout_init_mmc(unsigned int sys_rev)
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{
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wifi_status_cb = NULL;
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sdslot_vreg_enabled = 0;
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vreg_sdslot = vreg_get(0, "gp6");
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if (IS_ERR(vreg_sdslot))
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return PTR_ERR(vreg_sdslot);
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vreg_wifi_osc = vreg_get(0, "mmc");
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if (IS_ERR(vreg_wifi_osc))
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return PTR_ERR(vreg_wifi_osc);
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set_irq_wake(TROUT_GPIO_TO_INT(TROUT_GPIO_SDMC_CD_N), 1);
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msm_add_sdcc(1, &trout_wifi_data, 0, 0);
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if (!opt_disable_sdcard)
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msm_add_sdcc(2, &trout_sdslot_data,
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TROUT_GPIO_TO_INT(TROUT_GPIO_SDMC_CD_N), 0);
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else
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printk(KERN_INFO "trout: SD-Card interface disabled\n");
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return 0;
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}
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#if defined(CONFIG_DEBUG_FS)
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static int troutmmc_dbg_wifi_reset_set(void *data, u64 val)
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{
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trout_wifi_reset((int) val);
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return 0;
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}
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static int troutmmc_dbg_wifi_reset_get(void *data, u64 *val)
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{
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*val = trout_wifi_reset_state;
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return 0;
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}
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static int troutmmc_dbg_wifi_cd_set(void *data, u64 val)
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{
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trout_wifi_set_carddetect((int) val);
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return 0;
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}
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static int troutmmc_dbg_wifi_cd_get(void *data, u64 *val)
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{
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*val = trout_wifi_cd;
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return 0;
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}
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static int troutmmc_dbg_wifi_pwr_set(void *data, u64 val)
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{
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trout_wifi_power((int) val);
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return 0;
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}
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static int troutmmc_dbg_wifi_pwr_get(void *data, u64 *val)
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{
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*val = trout_wifi_power_state;
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return 0;
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}
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static int troutmmc_dbg_sd_pwr_set(void *data, u64 val)
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{
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trout_sdslot_switchvdd(NULL, (unsigned int) val);
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return 0;
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}
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static int troutmmc_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 troutmmc_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 troutmmc_dbg_sd_cd_get(void *data, u64 *val)
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{
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*val = trout_sdslot_status(NULL);
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return 0;
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}
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DEFINE_SIMPLE_ATTRIBUTE(troutmmc_dbg_wifi_reset_fops,
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troutmmc_dbg_wifi_reset_get,
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troutmmc_dbg_wifi_reset_set, "%llu\n");
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DEFINE_SIMPLE_ATTRIBUTE(troutmmc_dbg_wifi_cd_fops,
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troutmmc_dbg_wifi_cd_get,
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troutmmc_dbg_wifi_cd_set, "%llu\n");
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DEFINE_SIMPLE_ATTRIBUTE(troutmmc_dbg_wifi_pwr_fops,
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troutmmc_dbg_wifi_pwr_get,
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troutmmc_dbg_wifi_pwr_set, "%llu\n");
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DEFINE_SIMPLE_ATTRIBUTE(troutmmc_dbg_sd_pwr_fops,
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troutmmc_dbg_sd_pwr_get,
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troutmmc_dbg_sd_pwr_set, "%llu\n");
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DEFINE_SIMPLE_ATTRIBUTE(troutmmc_dbg_sd_cd_fops,
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troutmmc_dbg_sd_cd_get,
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troutmmc_dbg_sd_cd_set, "%llu\n");
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static int __init troutmmc_dbg_init(void)
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{
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struct dentry *dent;
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dent = debugfs_create_dir("troutmmc_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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&troutmmc_dbg_wifi_reset_fops);
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debugfs_create_file("wifi_cd", 0644, dent, NULL,
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&troutmmc_dbg_wifi_cd_fops);
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debugfs_create_file("wifi_pwr", 0644, dent, NULL,
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&troutmmc_dbg_wifi_pwr_fops);
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debugfs_create_file("sd_pwr", 0644, dent, NULL,
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&troutmmc_dbg_sd_pwr_fops);
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debugfs_create_file("sd_cd", 0644, dent, NULL,
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&troutmmc_dbg_sd_cd_fops);
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return 0;
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}
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device_initcall(troutmmc_dbg_init);
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#endif
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