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From: Pavel Machek on 3 Nov 2009 06:00

This is what I came up with (relative to the previous
patches). Unfortunately, it does not quite work: mmc controller is
detected, but it hangs trying to access the card.

Good news is that GPIO support seems to work, and I am able to flash
the keyboard backlight.

Does anyone have an idea what is wrong? Do I need some more
infrastructure to set up (DMA transfers or something?)?

I'm only setting up one mmc channel; I believe the other one is for
wifi, and it should work like this...?
Pavel

diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index 91e6f5c..16c0faa 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -6,4 +6,4 @@ obj-y += clock.o clock-7x01a.o

obj-$(CONFIG_MACH_HALIBUT) += board-halibut.o

-obj-$(CONFIG_MACH_TROUT) += board-dream.o
+obj-$(CONFIG_MACH_TROUT) += board-dream.o board-dream-mmc.o board-dream-gpio.o generic_gpio.o
diff --git a/arch/arm/mach-msm/board-dream-gpio.c b/arch/arm/mach-msm/board-dream-gpio.c
new file mode 100644
index 0000000..7e86a99
--- /dev/null
+++ b/arch/arm/mach-msm/board-dream-gpio.c
@@ -0,0 +1,301 @@
+/* arch/arm/mach-msm/board-dream-gpio.c
+ *
+ * Copyright (C) 2008 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/irq.h>
+#include <linux/pm.h>
+#include <linux/sysdev.h>
+
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <asm/mach-types.h>
+
+#include "board-dream.h"
+#include "gpio_chip.h"
+
+#undef MODULE_PARAM_PREFIX
+#define MODULE_PARAM_PREFIX "board_dream."
+
+static uint cpld_usb_h2w_sw;
+module_param_named(usb_h2w_sw, cpld_usb_h2w_sw, uint, 0);
+
+static uint8_t dream_cpld_shadow[4] = {
+#if defined(CONFIG_MSM_DEBUG_UART1)
+ /* H2W pins <-> UART1 */
+ [0] = 0x40, // for serial debug, low current
+#else
+ /* H2W pins <-> UART3, Bluetooth <-> UART1 */
+ [0] = 0x80, // for serial debug, low current
+#endif
+ [1] = 0x04, // I2C_PULL
+ [3] = 0x04, // mmdi 32k en
+};
+static uint8_t dream_int_mask[2] = {
+ [0] = 0xff, /* mask all interrupts */
+ [1] = 0xff,
+};
+static uint8_t dream_sleep_int_mask[] = {
+ [0] = 0xff,
+ [1] = 0xff,
+};
+static int dream_suspended;
+
+static int dream_gpio_read(struct gpio_chip *chip, unsigned n)
+{
+ uint8_t b;
+ int reg;
+ if (n >= TROUT_GPIO_VIRTUAL_BASE)
+ n += TROUT_GPIO_VIRTUAL_TO_REAL_OFFSET;
+ b = 1U << (n & 7);
+ reg = (n & 0x78) >> 2; // assumes base is 128
+ return !!(readb(TROUT_CPLD_BASE + reg) & b);
+}
+
+static void update_pwrsink(unsigned gpio, unsigned on)
+{
+ switch(gpio) {
+ case TROUT_GPIO_UI_LED_EN:
+ break;
+ case TROUT_GPIO_QTKEY_LED_EN:
+ break;
+ }
+}
+
+static uint8_t dream_gpio_write_shadow(unsigned n, unsigned on)
+{
+ uint8_t b = 1U << (n & 7);
+ int reg = (n & 0x78) >> 2; // assumes base is 128
+
+ if(on)
+ return dream_cpld_shadow[reg >> 1] |= b;
+ else
+ return dream_cpld_shadow[reg >> 1] &= ~b;
+}
+
+static int dream_gpio_write(struct gpio_chip *chip, unsigned n, unsigned on)
+{
+ int reg = (n & 0x78) >> 2; // assumes base is 128
+ unsigned long flags;
+ uint8_t reg_val;
+
+ if ((reg >> 1) >= ARRAY_SIZE(dream_cpld_shadow)) {
+ printk(KERN_ERR "dream_gpio_write called on input %d\n", n);
+ return -ENOTSUPP;
+ }
+
+ local_irq_save(flags);
+ update_pwrsink(n, on);
+ reg_val = dream_gpio_write_shadow(n, on);
+ writeb(reg_val, TROUT_CPLD_BASE + reg);
+ local_irq_restore(flags);
+ return 0;
+}
+
+static int dream_gpio_configure(struct gpio_chip *chip, unsigned int gpio, unsigned long flags)
+{
+ if(flags & (GPIOF_OUTPUT_LOW | GPIOF_OUTPUT_HIGH))
+ dream_gpio_write(chip, gpio, flags & GPIOF_OUTPUT_HIGH);
+ return 0;
+}
+
+static int dream_gpio_get_irq_num(struct gpio_chip *chip, unsigned int gpio, unsigned int *irqp, unsigned long *irqnumflagsp)
+{
+ if ((gpio < TROUT_GPIO_BANK0_FIRST_INT_SOURCE ||
+ gpio > TROUT_GPIO_BANK0_LAST_INT_SOURCE) &&
+ (gpio < TROUT_GPIO_BANK1_FIRST_INT_SOURCE ||
+ gpio > TROUT_GPIO_BANK1_LAST_INT_SOURCE))
+ return -ENOENT;
+ *irqp = TROUT_GPIO_TO_INT(gpio);
+ if(irqnumflagsp)
+ *irqnumflagsp = 0;
+ return 0;
+}
+
+static void dream_gpio_irq_ack(unsigned int irq)
+{
+ int bank = TROUT_INT_TO_BANK(irq);
+ uint8_t mask = TROUT_INT_TO_MASK(irq);
+ int reg = TROUT_BANK_TO_STAT_REG(bank);
+ /*printk(KERN_INFO "dream_gpio_irq_ack irq %d\n", irq);*/
+ writeb(mask, TROUT_CPLD_BASE + reg);
+}
+
+static void dream_gpio_irq_mask(unsigned int irq)
+{
+ unsigned long flags;
+ uint8_t reg_val;
+ int bank = TROUT_INT_TO_BANK(irq);
+ uint8_t mask = TROUT_INT_TO_MASK(irq);
+ int reg = TROUT_BANK_TO_MASK_REG(bank);
+
+ local_irq_save(flags);
+ reg_val = dream_int_mask[bank] |= mask;
+ /*printk(KERN_INFO "dream_gpio_irq_mask irq %d => %d:%02x\n",
+ irq, bank, reg_val);*/
+ if (!dream_suspended)
+ writeb(reg_val, TROUT_CPLD_BASE + reg);
+ local_irq_restore(flags);
+}
+
+static void dream_gpio_irq_unmask(unsigned int irq)
+{
+ unsigned long flags;
+ uint8_t reg_val;
+ int bank = TROUT_INT_TO_BANK(irq);
+ uint8_t mask = TROUT_INT_TO_MASK(irq);
+ int reg = TROUT_BANK_TO_MASK_REG(bank);
+
+ local_irq_save(flags);
+ reg_val = dream_int_mask[bank] &= ~mask;
+ /*printk(KERN_INFO "dream_gpio_irq_unmask irq %d => %d:%02x\n",
+ irq, bank, reg_val);*/
+ if (!dream_suspended)
+ writeb(reg_val, TROUT_CPLD_BASE + reg);
+ local_irq_restore(flags);
+}
+
+int dream_gpio_irq_set_wake(unsigned int irq, unsigned int on)
+{
+ unsigned long flags;
+ int bank = TROUT_INT_TO_BANK(irq);
+ uint8_t mask = TROUT_INT_TO_MASK(irq);
+
+ local_irq_save(flags);
+ if(on)
+ dream_sleep_int_mask[bank] &= ~mask;
+ else
+ dream_sleep_int_mask[bank] |= mask;
+ local_irq_restore(flags);
+ return 0;
+}
+
+static void dream_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
+{
+ int j, m;
+ unsigned v;
+ int bank;
+ int stat_reg;
+ int int_base = TROUT_INT_START;
+ uint8_t int_mask;
+
+ for (bank = 0; bank < 2; bank++) {
+ stat_reg = TROUT_BANK_TO_STAT_REG(bank);
+ v = readb(TROUT_CPLD_BASE + stat_reg);
+ int_mask = dream_int_mask[bank];
+ if (v & int_mask) {
+ writeb(v & int_mask, TROUT_CPLD_BASE + stat_reg);
+ printk(KERN_ERR "dream_gpio_irq_handler: got masked "
+ "interrupt: %d:%02x\n", bank, v & int_mask);
+ }
+ v &= ~int_mask;
+ while (v) {
+ m = v & -v;
+ j = fls(m) - 1;
+ /*printk(KERN_INFO "msm_gpio_irq_handler %d:%02x %02x b"
+ "it %d irq %d\n", bank, v, m, j, int_base + j);*/
+ v &= ~m;
+ generic_handle_irq(int_base + j);
+ }
+ int_base += TROUT_INT_BANK0_COUNT;
+ }
+ desc->chip->ack(irq);
+}
+
+static int dream_sysdev_suspend(struct sys_device *dev, pm_message_t state)
+{
+ dream_suspended = 1;
+ writeb(dream_sleep_int_mask[0],
+ TROUT_CPLD_BASE + TROUT_GPIO_INT_MASK0_REG);
+ writeb(dream_sleep_int_mask[1],
+ TROUT_CPLD_BASE + TROUT_GPIO_INT_MASK1_REG);
+ writeb(dream_sleep_int_mask[0],
+ TROUT_CPLD_BASE + TROUT_GPIO_INT_STAT0_REG);
+ writeb(dream_sleep_int_mask[1],
+ TROUT_CPLD_BASE + TROUT_GPIO_INT_STAT1_REG);
+ return 0;
+}
+
+int dream_sysdev_resume(struct sys_device *dev)
+{
+ writeb(dream_int_mask[0], TROUT_CPLD_BASE + TROUT_GPIO_INT_MASK0_REG);
+ writeb(dream_int_mask[1], TROUT_CPLD_BASE + TROUT_GPIO_INT_MASK1_REG);
+ dream_suspended = 0;
+ return 0;
+}
+
+static struct irq_chip dream_gpio_irq_chip = {
+ .name = "dreamgpio",
+ .ack = dream_gpio_irq_ack,
+ .mask = dream_gpio_irq_mask,
+ .unmask = dream_gpio_irq_unmask,
+ .set_wake = dream_gpio_irq_set_wake,
+ //.set_type = dream_gpio_irq_set_type,
+};
+
+static struct gpio_chip dream_gpio_chip = {
+ .start = TROUT_GPIO_START,
+ .end = TROUT_GPIO_END,
+ .configure = dream_gpio_configure,
+ .get_irq_num = dream_gpio_get_irq_num,
+ .read = dream_gpio_read,
+ .write = dream_gpio_write,
+// .read_detect_status = dream_gpio_read_detect_status,
+// .clear_detect_status = dream_gpio_clear_detect_status
+};
+
+struct sysdev_class dream_sysdev_class = {
+ .name = "dreamgpio_irq",
+ .suspend = dream_sysdev_suspend,
+ .resume = dream_sysdev_resume,
+};
+
+static struct sys_device dream_irq_device = {
+ .cls = &dream_sysdev_class,
+};
+
+static int __init dream_init_gpio(void)
+{
+ int i;
+
+ if (!machine_is_trout())
+ return 0;
+
+ /* adjust GPIOs based on bootloader request */
+ pr_info("dream_init_gpio: cpld_usb_hw2_sw = %d\n", cpld_usb_h2w_sw);
+ dream_gpio_write_shadow(TROUT_GPIO_USB_H2W_SW, cpld_usb_h2w_sw);
+
+ for(i = 0; i < ARRAY_SIZE(dream_cpld_shadow); i++)
+ writeb(dream_cpld_shadow[i], TROUT_CPLD_BASE + i * 2);
+
+ for(i = TROUT_INT_START; i <= TROUT_INT_END; i++) {
+ set_irq_chip(i, &dream_gpio_irq_chip);
+ set_irq_handler(i, handle_edge_irq);
+ set_irq_flags(i, IRQF_VALID);
+ }
+
+ register_gpio_chip(&dream_gpio_chip);
+
+ set_irq_type(MSM_GPIO_TO_INT(17), IRQF_TRIGGER_HIGH);
+ set_irq_chained_handler(MSM_GPIO_TO_INT(17), dream_gpio_irq_handler);
+ set_irq_wake(MSM_GPIO_TO_INT(17), 1);
+
+ if(sysdev_class_register(&dream_sysdev_class) == 0)
+ sysdev_register(&dream_irq_device);
+
+ return 0;
+}
+
+postcore_initcall(dream_init_gpio);
diff --git a/arch/arm/mach-msm/board-dream-mmc.c b/arch/arm/mach-msm/board-dream-mmc.c
new file mode 100644
index 0000000..1b65ece
--- /dev/null
+++ b/arch/arm/mach-msm/board-dream-mmc.c
@@ -0,0 +1,240 @@
+/* linux/arch/arm/mach-msm/board-dream-mmc.c
+ * Author: Brian Swetland <swetland(a)google.com>
+ *
+ * GPLv2.
+ */
+
+#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/gpio.h>
+#include <asm/io.h>
+
+#include <mach/vreg.h>
+
+#include <mach/mmc.h>
+
+#include "devices.h"
+#include "board-dream.h"
+#include "proc_comm.h"
+
+#define DEBUG_SDSLOT_VDD 1
+
+extern int msm_add_sdcc(unsigned int controller, struct mmc_platform_data *plat,
+ unsigned int stat_irq, unsigned long stat_irq_flags);
+
+/* ---- 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 dream_disablesdcard_setup(char *str)
+{
+ int cal = simple_strtol(str, NULL, 0);
+
+ opt_disable_sdcard = cal;
+ return 1;
+}
+
+__setup("board_dream.disable_sdcard=", dream_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 dream_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 dream_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 mmc_platform_data dream_sdslot_data = {
+ .ocr_mask = TROUT_MMC_VDD,
+ .status = dream_sdslot_status,
+ .translate_vdd = dream_sdslot_switchvdd,
+};
+
+int __init dream_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);
+
+ set_irq_wake(TROUT_GPIO_TO_INT(TROUT_GPIO_SDMC_CD_N), 1);
+
+ if (!opt_disable_sdcard)
+ msm_add_sdcc(2, &dream_sdslot_data,
+ TROUT_GPIO_TO_INT(TROUT_GPIO_SDMC_CD_N), 0);
+ else
+ printk(KERN_INFO "dream: SD-Card interface disabled\n");
+ return 0;
+}
+
+#if defined(CONFIG_DEBUG_FS)
+static int dreammmc_dbg_sd_pwr_set(void *data, u64 val)
+{
+ dream_sdslot_switchvdd(NULL, (unsigned int) val);
+ return 0;
+}
+
+static int dreammmc_dbg_sd_pwr_get(void *data, u64 *val)
+{
+ *val = sdslot_vdd;
+ return 0;
+}
+
+static int dreammmc_dbg_sd_cd_set(void *data, u64 val)
+{
+ return -ENOSYS;
+}
+
+static int dreammmc_dbg_sd_cd_get(void *data, u64 *val)
+{
+ *val = dream_sdslot_status(NULL);
+ return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(dreammmc_dbg_sd_pwr_fops,
+ dreammmc_dbg_sd_pwr_get,
+ dreammmc_dbg_sd_pwr_set, "%llu\n");
+
+DEFINE_SIMPLE_ATTRIBUTE(dreammmc_dbg_sd_cd_fops,
+ dreammmc_dbg_sd_cd_get,
+ dreammmc_dbg_sd_cd_set, "%llu\n");
+
+static int __init dreammmc_dbg_init(void)
+{
+ struct dentry *dent;
+
+ dent = debugfs_create_dir("dreammmc_dbg", 0);
+ if (IS_ERR(dent))
+ return PTR_ERR(dent);
+
+ debugfs_create_file("sd_pwr", 0644, dent, NULL,
+ &dreammmc_dbg_sd_pwr_fops);
+ debugfs_create_file("sd_cd", 0644, dent, NULL,
+ &dreammmc_dbg_sd_cd_fops);
+
+ return 0;
+}
+
+device_initcall(dreammmc_dbg_init);
+
+#endif
diff --git a/arch/arm/mach-msm/board-dream.c b/arch/arm/mach-msm/board-dream.c
index a0877a3..49de63b 100644
--- a/arch/arm/mach-msm/board-dream.c
+++ b/arch/arm/mach-msm/board-dream.c
@@ -12,16 +12,19 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
+ * This machine is also known by its codename, "trout".
*/

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
+#include <linux/delay.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/setup.h>
+#include <asm/gpio.h>

#include <mach/board.h>
#include <mach/hardware.h>
@@ -30,6 +33,9 @@
#include "devices.h"
#include "board-dream.h"

+extern int dream_init_mmc(unsigned int);
+
+
static struct platform_device *devices[] __initdata = {
&msm_device_uart3,
&msm_device_smd,
@@ -40,12 +46,12 @@ static struct platform_device *devices[] __initdata = {

extern struct sys_timer msm_timer;

-static void __init trout_init_irq(void)
+static void __init dream_init_irq(void)
{
msm_init_irq();
}

-static void __init trout_fixup(struct machine_desc *desc, struct tag *tags,
+static void __init dream_fixup(struct machine_desc *desc, struct tag *tags,
char **cmdline, struct meminfo *mi)
{
mi->nr_banks=1;
@@ -54,12 +60,34 @@ static void __init trout_fixup(struct machine_desc *desc, struct tag *tags,
mi->bank[0].size = (101*1024*1024);
}

-static void __init trout_init(void)
+static void __init dream_init(void)
{
+ int rc;
platform_add_devices(devices, ARRAY_SIZE(devices));
+
+ rc = dream_init_mmc(system_rev);
+ if (rc)
+ printk(KERN_CRIT "%s: MMC init failure (%d)\n", __func__, rc);
+
+ gpio_set_value(TROUT_GPIO_UI_LED_EN, 1);
+ mdelay(300);
+ gpio_set_value(TROUT_GPIO_UI_LED_EN, 0);
+ mdelay(300);
+ gpio_set_value(TROUT_GPIO_UI_LED_EN, 1);
+ mdelay(300);
+ gpio_set_value(TROUT_GPIO_UI_LED_EN, 0);
+ mdelay(300);
+ gpio_set_value(TROUT_GPIO_UI_LED_EN, 1);
+ mdelay(300);
+ gpio_set_value(TROUT_GPIO_UI_LED_EN, 0);
+ mdelay(300);
+ gpio_set_value(TROUT_GPIO_UI_LED_EN, 1);
+ mdelay(300);
+ gpio_set_value(TROUT_GPIO_UI_LED_EN, 0);
+ mdelay(300);
}

-static struct map_desc trout_io_desc[] __initdata = {
+static struct map_desc dream_io_desc[] __initdata = {
{
.virtual = TROUT_CPLD_BASE,
.pfn = __phys_to_pfn(TROUT_CPLD_START),
@@ -68,10 +96,10 @@ static struct map_desc trout_io_desc[] __initdata = {
}
};

-static void __init trout_map_io(void)
+static void __init dream_map_io(void)
{
msm_map_common_io();
- iotable_init(trout_io_desc, ARRAY_SIZE(trout_io_desc));
+ iotable_init(dream_io_desc, ARRAY_SIZE(dream_io_desc));

#ifdef CONFIG_MSM_DEBUG_UART3
/* route UART3 to the "H2W" extended usb connector */
@@ -87,9 +115,9 @@ MACHINE_START(TROUT, "HTC Dream")
.io_pg_offst = ((MSM_DEBUG_UART_BASE) >> 18) & 0xfffc,
#endif
.boot_params = 0x10000100,
- .fixup = trout_fixup,
- .map_io = trout_map_io,
- .init_irq = trout_init_irq,
- .init_machine = trout_init,
+ .fixup = dream_fixup,
+ .map_io = dream_map_io,
+ .init_irq = dream_init_irq,
+ .init_machine = dream_init,
.timer = &msm_timer,
MACHINE_END
diff --git a/arch/arm/mach-msm/board-dream.h b/arch/arm/mach-msm/board-dream.h
index 4f345a5..cdfb0ae 100644
--- a/arch/arm/mach-msm/board-dream.h
+++ b/arch/arm/mach-msm/board-dream.h
@@ -1,5 +1,153 @@

+#define MSM_SMI_BASE 0x00000000
+#define MSM_SMI_SIZE 0x00800000
+
+#define MSM_EBI_BASE 0x10000000
+#define MSM_EBI_SIZE 0x06e00000
+
+#define MSM_PMEM_GPU0_BASE 0x00000000
+#define MSM_PMEM_GPU0_SIZE 0x00700000
+
+#define MSM_PMEM_MDP_BASE 0x02000000
+#define MSM_PMEM_MDP_SIZE 0x00800000
+
+#define MSM_PMEM_ADSP_BASE 0x02800000
+#define MSM_PMEM_ADSP_SIZE 0x00800000
+
+#define MSM_PMEM_CAMERA_BASE 0x03000000
+#define MSM_PMEM_CAMERA_SIZE 0x00800000
+
+#define MSM_FB_BASE 0x03800000
+#define MSM_FB_SIZE 0x00100000
+
+#define MSM_LINUX_BASE MSM_EBI_BASE
+#define MSM_LINUX_SIZE 0x06500000
+
+#define MSM_PMEM_GPU1_SIZE 0x800000
+#define MSM_PMEM_GPU1_BASE MSM_RAM_CONSOLE_BASE - MSM_PMEM_GPU1_SIZE
+
+#define MSM_RAM_CONSOLE_BASE MSM_EBI_BASE + 0x6d00000
+#define MSM_RAM_CONSOLE_SIZE 128 * SZ_1K
+
+#if (MSM_FB_BASE + MSM_FB_SIZE) >= (MSM_PMEM_GPU1_BASE)
+#error invalid memory map
+#endif
+
+#define DECLARE_MSM_IOMAP
+#include <mach/msm_iomap.h>
+
+#define TROUT_4_BALL_UP_0 1
+#define TROUT_4_BALL_LEFT_0 18
+#define TROUT_4_BALL_DOWN_0 57
+#define TROUT_4_BALL_RIGHT_0 91
+
+#define TROUT_5_BALL_UP_0 94
+#define TROUT_5_BALL_LEFT_0 18
+#define TROUT_5_BALL_DOWN_0 90
+#define TROUT_5_BALL_RIGHT_0 19
+
+#define TROUT_POWER_KEY 20
+
+#define TROUT_4_TP_LS_EN 19
+#define TROUT_5_TP_LS_EN 1
+
#define TROUT_CPLD_BASE 0xE8100000
#define TROUT_CPLD_START 0x98000000
#define TROUT_CPLD_SIZE SZ_4K

+#define TROUT_GPIO_CABLE_IN1 (83)
+#define TROUT_GPIO_CABLE_IN2 (49)
+
+#define TROUT_GPIO_START (128)
+
+#define TROUT_GPIO_INT_MASK0_REG (0x0c)
+#define TROUT_GPIO_INT_STAT0_REG (0x0e)
+#define TROUT_GPIO_INT_MASK1_REG (0x14)
+#define TROUT_GPIO_INT_STAT1_REG (0x10)
+
+#define TROUT_GPIO_HAPTIC_PWM (28)
+#define TROUT_GPIO_PS_HOLD (25)
+
+#define TROUT_GPIO_MISC2_BASE (TROUT_GPIO_START + 0x00)
+#define TROUT_GPIO_MISC3_BASE (TROUT_GPIO_START + 0x08)
+#define TROUT_GPIO_MISC4_BASE (TROUT_GPIO_START + 0x10)
+#define TROUT_GPIO_MISC5_BASE (TROUT_GPIO_START + 0x18)
+#define TROUT_GPIO_INT2_BASE (TROUT_GPIO_START + 0x20)
+#define TROUT_GPIO_MISC1_BASE (TROUT_GPIO_START + 0x28)
+#define TROUT_GPIO_VIRTUAL_BASE (TROUT_GPIO_START + 0x30)
+#define TROUT_GPIO_INT5_BASE (TROUT_GPIO_START + 0x48)
+
+#define TROUT_GPIO_CHARGER_EN (TROUT_GPIO_MISC2_BASE + 0)
+#define TROUT_GPIO_ISET (TROUT_GPIO_MISC2_BASE + 1)
+#define TROUT_GPIO_H2W_DAT_DIR (TROUT_GPIO_MISC2_BASE + 2)
+#define TROUT_GPIO_H2W_CLK_DIR (TROUT_GPIO_MISC2_BASE + 3)
+#define TROUT_GPIO_H2W_DAT_GPO (TROUT_GPIO_MISC2_BASE + 4)
+#define TROUT_GPIO_H2W_CLK_GPO (TROUT_GPIO_MISC2_BASE + 5)
+#define TROUT_GPIO_H2W_SEL0 (TROUT_GPIO_MISC2_BASE + 6)
+#define TROUT_GPIO_H2W_SEL1 (TROUT_GPIO_MISC2_BASE + 7)
+
+#define TROUT_GPIO_SPOTLIGHT_EN (TROUT_GPIO_MISC3_BASE + 0)
+#define TROUT_GPIO_FLASH_EN (TROUT_GPIO_MISC3_BASE + 1)
+#define TROUT_GPIO_I2C_PULL (TROUT_GPIO_MISC3_BASE + 2)
+#define TROUT_GPIO_TP_I2C_PULL (TROUT_GPIO_MISC3_BASE + 3)
+#define TROUT_GPIO_TP_EN (TROUT_GPIO_MISC3_BASE + 4)
+#define TROUT_GPIO_JOG_EN (TROUT_GPIO_MISC3_BASE + 5)
+#define TROUT_GPIO_UI_LED_EN (TROUT_GPIO_MISC3_BASE + 6)
+#define TROUT_GPIO_QTKEY_LED_EN (TROUT_GPIO_MISC3_BASE + 7)
+
+#define TROUT_GPIO_VCM_PWDN (TROUT_GPIO_MISC4_BASE + 0)
+#define TROUT_GPIO_USB_H2W_SW (TROUT_GPIO_MISC4_BASE + 1)
+#define TROUT_GPIO_COMPASS_RST_N (TROUT_GPIO_MISC4_BASE + 2)
+#define TROUT_GPIO_HAPTIC_EN_UP (TROUT_GPIO_MISC4_BASE + 3)
+#define TROUT_GPIO_HAPTIC_EN_MAIN (TROUT_GPIO_MISC4_BASE + 4)
+#define TROUT_GPIO_USB_PHY_RST_N (TROUT_GPIO_MISC4_BASE + 5)
+#define TROUT_GPIO_WIFI_PA_RESETX (TROUT_GPIO_MISC4_BASE + 6)
+#define TROUT_GPIO_WIFI_EN (TROUT_GPIO_MISC4_BASE + 7)
+
+#define TROUT_GPIO_BT_32K_EN (TROUT_GPIO_MISC5_BASE + 0)
+#define TROUT_GPIO_MAC_32K_EN (TROUT_GPIO_MISC5_BASE + 1)
+#define TROUT_GPIO_MDDI_32K_EN (TROUT_GPIO_MISC5_BASE + 2)
+#define TROUT_GPIO_COMPASS_32K_EN (TROUT_GPIO_MISC5_BASE + 3)
+
+#define TROUT_GPIO_NAVI_ACT_N (TROUT_GPIO_INT2_BASE + 0)
+#define TROUT_GPIO_COMPASS_IRQ (TROUT_GPIO_INT2_BASE + 1)
+#define TROUT_GPIO_SLIDING_DET (TROUT_GPIO_INT2_BASE + 2)
+#define TROUT_GPIO_AUD_HSMIC_DET_N (TROUT_GPIO_INT2_BASE + 3)
+#define TROUT_GPIO_SD_DOOR_N (TROUT_GPIO_INT2_BASE + 4)
+#define TROUT_GPIO_CAM_BTN_STEP1_N (TROUT_GPIO_INT2_BASE + 5)
+#define TROUT_GPIO_CAM_BTN_STEP2_N (TROUT_GPIO_INT2_BASE + 6)
+#define TROUT_GPIO_TP_ATT_N (TROUT_GPIO_INT2_BASE + 7)
+#define TROUT_GPIO_BANK0_FIRST_INT_SOURCE (TROUT_GPIO_NAVI_ACT_N)
+#define TROUT_GPIO_BANK0_LAST_INT_SOURCE (TROUT_GPIO_TP_ATT_N)
+
+#define TROUT_GPIO_H2W_DAT_GPI (TROUT_GPIO_MISC1_BASE + 0)
+#define TROUT_GPIO_H2W_CLK_GPI (TROUT_GPIO_MISC1_BASE + 1)
+#define TROUT_GPIO_CPLD128_VER_0 (TROUT_GPIO_MISC1_BASE + 4)
+#define TROUT_GPIO_CPLD128_VER_1 (TROUT_GPIO_MISC1_BASE + 5)
+#define TROUT_GPIO_CPLD128_VER_2 (TROUT_GPIO_MISC1_BASE + 6)
+#define TROUT_GPIO_CPLD128_VER_3 (TROUT_GPIO_MISC1_BASE + 7)
+
+#define TROUT_GPIO_SDMC_CD_N (TROUT_GPIO_VIRTUAL_BASE + 0)
+#define TROUT_GPIO_END (TROUT_GPIO_SDMC_CD_N)
+#define TROUT_GPIO_BANK1_FIRST_INT_SOURCE (TROUT_GPIO_SDMC_CD_N)
+#define TROUT_GPIO_BANK1_LAST_INT_SOURCE (TROUT_GPIO_SDMC_CD_N)
+
+#define TROUT_GPIO_VIRTUAL_TO_REAL_OFFSET \
+ (TROUT_GPIO_INT5_BASE - TROUT_GPIO_VIRTUAL_BASE)
+
+#define TROUT_INT_START (NR_MSM_IRQS + NR_GPIO_IRQS)
+#define TROUT_INT_BANK0_COUNT (8)
+#define TROUT_INT_BANK1_START (TROUT_INT_START + TROUT_INT_BANK0_COUNT)
+#define TROUT_INT_BANK1_COUNT (1)
+#define TROUT_INT_END (TROUT_INT_START + TROUT_INT_BANK0_COUNT + \
+ TROUT_INT_BANK1_COUNT - 1)
+#define TROUT_GPIO_TO_INT(n) (((n) <= TROUT_GPIO_BANK0_LAST_INT_SOURCE) ? \
+ (TROUT_INT_START - TROUT_GPIO_BANK0_FIRST_INT_SOURCE + (n)) : \
+ (TROUT_INT_BANK1_START - TROUT_GPIO_BANK1_FIRST_INT_SOURCE + (n)))
+
+#define TROUT_INT_TO_BANK(n) ((n - TROUT_INT_START) / TROUT_INT_BANK0_COUNT)
+#define TROUT_INT_TO_MASK(n) (1U << ((n - TROUT_INT_START) & 7))
+#define TROUT_BANK_TO_MASK_REG(bank) \
+ (bank ? TROUT_GPIO_INT_MASK1_REG : TROUT_GPIO_INT_MASK0_REG)
+#define TROUT_BANK_TO_STAT_REG(bank) \
+ (bank ? TROUT_GPIO_INT_STAT1_REG : TROUT_GPIO_INT_STAT0_REG)
diff --git a/arch/arm/mach-msm/devices.c b/arch/arm/mach-msm/devices.c
index 31b6b30..afec7c2 100644
--- a/arch/arm/mach-msm/devices.c
+++ b/arch/arm/mach-msm/devices.c
@@ -155,6 +155,7 @@ struct platform_device msm_device_smd = {
.id = -1,
};

+
static struct resource resources_sdc1[] = {
{
.start = MSM_SDC1_PHYS,
@@ -163,8 +164,19 @@ static struct resource resources_sdc1[] = {
},
{
.start = INT_SDC1_0,
+ .end = INT_SDC1_0,
+ .flags = IORESOURCE_IRQ,
+ .name = "cmd_irq",
+ },
+ {
+ .start = INT_SDC1_1,
.end = INT_SDC1_1,
.flags = IORESOURCE_IRQ,
+ .name = "pio_irq",
+ },
+ {
+ .flags = IORESOURCE_IRQ | IORESOURCE_DISABLED,
+ .name = "status_irq"
},
{
.start = 8,
@@ -181,8 +193,19 @@ static struct resource resources_sdc2[] = {
},
{
.start = INT_SDC2_0,
+ .end = INT_SDC2_0,
+ .flags = IORESOURCE_IRQ,
+ .name = "cmd_irq",
+ },
+ {
+ .start = INT_SDC2_1,
.end = INT_SDC2_1,
.flags = IORESOURCE_IRQ,
+ .name = "pio_irq",
+ },
+ {
+ .flags = IORESOURCE_IRQ | IORESOURCE_DISABLED,
+ .name = "status_irq"
},
{
.start = 8,
@@ -199,8 +222,19 @@ static struct resource resources_sdc3[] = {
},
{
.start = INT_SDC3_0,
+ .end = INT_SDC3_0,
+ .flags = IORESOURCE_IRQ,
+ .name = "cmd_irq",
+ },
+ {
+ .start = INT_SDC3_1,
.end = INT_SDC3_1,
.flags = IORESOURCE_IRQ,
+ .name = "pio_irq",
+ },
+ {
+ .flags = IORESOURCE_IRQ | IORESOURCE_DISABLED,
+ .name = "status_irq"
},
{
.start = 8,
@@ -217,8 +251,19 @@ static struct resource resources_sdc4[] = {
},
{
.start = INT_SDC4_0,
+ .end = INT_SDC4_0,
+ .flags = IORESOURCE_IRQ,
+ .name = "cmd_irq",
+ },
+ {
+ .start = INT_SDC4_1,
.end = INT_SDC4_1,
.flags = IORESOURCE_IRQ,
+ .name = "pio_irq",
+ },
+ {
+ .flags = IORESOURCE_IRQ | IORESOURCE_DISABLED,
+ .name = "status_irq"
},
{
.start = 8,
@@ -266,3 +311,35 @@ struct platform_device msm_device_sdc4 = {
.coherent_dma_mask = 0xffffffff,
},
};
+
+
+static struct platform_device *msm_sdcc_devices[] __initdata = {
+ &msm_device_sdc1,
+ &msm_device_sdc2,
+ &msm_device_sdc3,
+ &msm_device_sdc4,
+};
+
+int __init msm_add_sdcc(unsigned int controller, struct mmc_platform_data *plat,
+ unsigned int stat_irq, unsigned long stat_irq_flags)
+{
+ struct platform_device *pdev;
+ struct resource *res;
+
+ if (controller < 1 || controller > 4)
+ return -EINVAL;
+
+ pdev = msm_sdcc_devices[controller-1];
+ pdev->dev.platform_data = plat;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "status_irq");
+ if (!res)
+ return -EINVAL;
+ else if (stat_irq) {
+ res->start = res->end = stat_irq;
+ res->flags &= ~IORESOURCE_DISABLED;
+ res->flags |= stat_irq_flags;
+ }
+
+ return platform_device_register(pdev);
+}
diff --git a/arch/arm/mach-msm/generic_gpio.c b/arch/arm/mach-msm/generic_gpio.c
new file mode 100644
index 0000000..fe24d38
--- /dev/null
+++ b/arch/arm/mach-msm/generic_gpio.c
@@ -0,0 +1,274 @@
+/* arch/arm/mach-msm/generic_gpio.c
+ *
+ * Copyright (C) 2007 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <asm/gpio.h>
+#include "gpio_chip.h"
+
+#define GPIO_NUM_TO_CHIP_INDEX(gpio) ((gpio)>>5)
+
+struct gpio_state {
+ unsigned long flags;
+ int refcount;
+};
+
+static DEFINE_SPINLOCK(gpio_chips_lock);
+static LIST_HEAD(gpio_chip_list);
+static struct gpio_chip **gpio_chip_array;
+static unsigned long gpio_chip_array_size;
+
+int register_gpio_chip(struct gpio_chip *new_gpio_chip)
+{
+ int err = 0;
+ struct gpio_chip *gpio_chip;
+ int i;
+ unsigned long irq_flags;
+ unsigned int chip_array_start_index, chip_array_end_index;
+
+ new_gpio_chip->state = kzalloc((new_gpio_chip->end + 1 - new_gpio_chip->start) * sizeof(new_gpio_chip->state[0]), GFP_KERNEL);
+ if (new_gpio_chip->state == NULL) {
+ printk(KERN_ERR "register_gpio_chip: failed to allocate state\n");
+ return -ENOMEM;
+ }
+
+ spin_lock_irqsave(&gpio_chips_lock, irq_flags);
+ chip_array_start_index = GPIO_NUM_TO_CHIP_INDEX(new_gpio_chip->start);
+ chip_array_end_index = GPIO_NUM_TO_CHIP_INDEX(new_gpio_chip->end);
+ if (chip_array_end_index >= gpio_chip_array_size) {
+ struct gpio_chip **new_gpio_chip_array;
+ unsigned long new_gpio_chip_array_size = chip_array_end_index + 1;
+
+ new_gpio_chip_array = kmalloc(new_gpio_chip_array_size * sizeof(new_gpio_chip_array[0]), GFP_ATOMIC);
+ if (new_gpio_chip_array == NULL) {
+ printk(KERN_ERR "register_gpio_chip: failed to allocate array\n");
+ err = -ENOMEM;
+ goto failed;
+ }
+ for (i = 0; i < gpio_chip_array_size; i++)
+ new_gpio_chip_array[i] = gpio_chip_array[i];
+ for (i = gpio_chip_array_size; i < new_gpio_chip_array_size; i++)
+ new_gpio_chip_array[i] = NULL;
+ gpio_chip_array = new_gpio_chip_array;
+ gpio_chip_array_size = new_gpio_chip_array_size;
+ }
+ list_for_each_entry(gpio_chip, &gpio_chip_list, list) {
+ if (gpio_chip->start > new_gpio_chip->end) {
+ list_add_tail(&new_gpio_chip->list, &gpio_chip->list);
+ goto added;
+ }
+ if (gpio_chip->end >= new_gpio_chip->start) {
+ printk(KERN_ERR "register_gpio_source %u-%u overlaps with %u-%u\n",
+ new_gpio_chip->start, new_gpio_chip->end,
+ gpio_chip->start, gpio_chip->end);
+ err = -EBUSY;
+ goto failed;
+ }
+ }
+ list_add_tail(&new_gpio_chip->list, &gpio_chip_list);
+added:
+ for (i = chip_array_start_index; i <= chip_array_end_index; i++) {
+ if (gpio_chip_array[i] == NULL || gpio_chip_array[i]->start > new_gpio_chip->start)
+ gpio_chip_array[i] = new_gpio_chip;
+ }
+failed:
+ spin_unlock_irqrestore(&gpio_chips_lock, irq_flags);
+ if (err)
+ kfree(new_gpio_chip->state);
+ return err;
+}
+
+static struct gpio_chip *get_gpio_chip_locked(unsigned int gpio)
+{
+ unsigned long i;
+ struct gpio_chip *chip;
+
+ i = GPIO_NUM_TO_CHIP_INDEX(gpio);
+ if (i >= gpio_chip_array_size)
+ return NULL;
+ chip = gpio_chip_array[i];
+ if (chip == NULL)
+ return NULL;
+ list_for_each_entry_from(chip, &gpio_chip_list, list) {
+ if (gpio < chip->start)
+ return NULL;
+ if (gpio <= chip->end)
+ return chip;
+ }
+ return NULL;
+}
+
+static int request_gpio(unsigned int gpio, unsigned long flags)
+{
+ int err = 0;
+ struct gpio_chip *chip;
+ unsigned long irq_flags;
+ unsigned long chip_index;
+
+ spin_lock_irqsave(&gpio_chips_lock, irq_flags);
+ chip = get_gpio_chip_locked(gpio);
+ if (chip == NULL) {
+ err = -EINVAL;
+ goto err;
+ }
+ chip_index = gpio - chip->start;
+ if (chip->state[chip_index].refcount == 0) {
+ chip->configure(chip, gpio, flags);
+ chip->state[chip_index].flags = flags;
+ chip->state[chip_index].refcount++;
+ } else if ((flags & IRQF_SHARED) && (chip->state[chip_index].flags & IRQF_SHARED))
+ chip->state[chip_index].refcount++;
+ else
+ err = -EBUSY;
+err:
+ spin_unlock_irqrestore(&gpio_chips_lock, irq_flags);
+ return err;
+}
+
+int gpio_request(unsigned gpio, const char *label)
+{
+ return request_gpio(gpio, 0);
+}
+EXPORT_SYMBOL(gpio_request);
+
+void gpio_free(unsigned gpio)
+{
+ struct gpio_chip *chip;
+ unsigned long irq_flags;
+ unsigned long chip_index;
+
+ spin_lock_irqsave(&gpio_chips_lock, irq_flags);
+ chip = get_gpio_chip_locked(gpio);
+ if (chip) {
+ chip_index = gpio - chip->start;
+ chip->state[chip_index].refcount--;
+ }
+ spin_unlock_irqrestore(&gpio_chips_lock, irq_flags);
+}
+EXPORT_SYMBOL(gpio_free);
+
+static int gpio_get_irq_num(unsigned int gpio, unsigned int *irqp, unsigned long *irqnumflagsp)
+{
+ int ret = -ENOTSUPP;
+ struct gpio_chip *chip;
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&gpio_chips_lock, irq_flags);
+ chip = get_gpio_chip_locked(gpio);
+ if (chip && chip->get_irq_num)
+ ret = chip->get_irq_num(chip, gpio, irqp, irqnumflagsp);
+ spin_unlock_irqrestore(&gpio_chips_lock, irq_flags);
+ return ret;
+}
+
+int gpio_to_irq(unsigned gpio)
+{
+ int ret, irq;
+ ret = gpio_get_irq_num(gpio, &irq, NULL);
+ if (ret)
+ return ret;
+ return irq;
+}
+EXPORT_SYMBOL(gpio_to_irq);
+
+int gpio_configure(unsigned int gpio, unsigned long flags)
+{
+ int ret = -ENOTSUPP;
+ struct gpio_chip *chip;
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&gpio_chips_lock, irq_flags);
+ chip = get_gpio_chip_locked(gpio);
+ if (chip)
+ ret = chip->configure(chip, gpio, flags);
+ spin_unlock_irqrestore(&gpio_chips_lock, irq_flags);
+ return ret;
+}
+EXPORT_SYMBOL(gpio_configure);
+
+int gpio_direction_input(unsigned gpio)
+{
+ return gpio_configure(gpio, GPIOF_INPUT);
+}
+EXPORT_SYMBOL(gpio_direction_input);
+
+int gpio_direction_output(unsigned gpio, int value)
+{
+ gpio_set_value(gpio, value);
+ return gpio_configure(gpio, GPIOF_DRIVE_OUTPUT);
+}
+EXPORT_SYMBOL(gpio_direction_output);
+
+int gpio_get_value(unsigned gpio)
+{
+ int ret = -ENOTSUPP;
+ struct gpio_chip *chip;
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&gpio_chips_lock, irq_flags);
+ chip = get_gpio_chip_locked(gpio);
+ if (chip && chip->read)
+ ret = chip->read(chip, gpio);
+ spin_unlock_irqrestore(&gpio_chips_lock, irq_flags);
+ return ret;
+}
+EXPORT_SYMBOL(gpio_get_value);
+
+void gpio_set_value(unsigned gpio, int on)
+{
+ int ret = -ENOTSUPP;
+ struct gpio_chip *chip;
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&gpio_chips_lock, irq_flags);
+ chip = get_gpio_chip_locked(gpio);
+ if (chip && chip->write)
+ ret = chip->write(chip, gpio, on);
+ spin_unlock_irqrestore(&gpio_chips_lock, irq_flags);
+}
+EXPORT_SYMBOL(gpio_set_value);
+
+int gpio_read_detect_status(unsigned int gpio)
+{
+ int ret = -ENOTSUPP;
+ struct gpio_chip *chip;
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&gpio_chips_lock, irq_flags);
+ chip = get_gpio_chip_locked(gpio);
+ if (chip && chip->read_detect_status)
+ ret = chip->read_detect_status(chip, gpio);
+ spin_unlock_irqrestore(&gpio_chips_lock, irq_flags);
+ return ret;
+}
+EXPORT_SYMBOL(gpio_read_detect_status);
+
+int gpio_clear_detect_status(unsigned int gpio)
+{
+ int ret = -ENOTSUPP;
+ struct gpio_chip *chip;
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&gpio_chips_lock, irq_flags);
+ chip = get_gpio_chip_locked(gpio);
+ if (chip && chip->clear_detect_status)
+ ret = chip->clear_detect_status(chip, gpio);
+ spin_unlock_irqrestore(&gpio_chips_lock, irq_flags);
+ return ret;
+}
+EXPORT_SYMBOL(gpio_clear_detect_status);
diff --git a/arch/arm/mach-msm/gpio_chip.h b/arch/arm/mach-msm/gpio_chip.h
new file mode 100644
index 0000000..eab9f09
--- /dev/null
+++ b/arch/arm/mach-msm/gpio_chip.h
@@ -0,0 +1,38 @@
+/* arch/arm/mach-msm/gpio_chip.h
+ *
+ * Copyright (C) 2007 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _LINUX_GPIO_CHIP_H
+#define _LINUX_GPIO_CHIP_H
+
+#include <linux/list.h>
+
+struct gpio_chip {
+ struct list_head list;
+ struct gpio_state *state;
+
+ unsigned int start;
+ unsigned int end;
+
+ int (*configure)(struct gpio_chip *chip, unsigned int gpio, unsigned long flags);
+ int (*get_irq_num)(struct gpio_chip *chip, unsigned int gpio, unsigned int *irqp, unsigned long *irqnumflagsp);
+ int (*read)(struct gpio_chip *chip, unsigned int gpio);
+ int (*write)(struct gpio_chip *chip, unsigned int gpio, unsigned on);
+ int (*read_detect_status)(struct gpio_chip *chip, unsigned int gpio);
+ int (*clear_detect_status)(struct gpio_chip *chip, unsigned int gpio);
+};
+
+int register_gpio_chip(struct gpio_chip *gpio_chip);
+
+#endif
diff --git a/arch/arm/mach-msm/gpio_hw.h b/arch/arm/mach-msm/gpio_hw.h
new file mode 100644
index 0000000..61f410c
--- /dev/null
+++ b/arch/arm/mach-msm/gpio_hw.h
@@ -0,0 +1,100 @@
+/* arch/arm/mach-msm/gpio_hw.h
+ *
+ * Copyright (C) 2007 Google, Inc.
+ * Author: Brian Swetland <swetland(a)google.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __ARCH_ARM_MACH_MSM_GPIO_HW_H
+#define __ARCH_ARM_MACH_MSM_GPIO_HW_H
+
+#include <mach/msm_iomap.h>
+
+/* see 80-VA736-2 Rev C pp 695-751
+**
+** These are actually the *shadow* gpio registers, since the
+** real ones (which allow full access) are only available to the
+** ARM9 side of the world.
+**
+** Since the _BASE need to be page-aligned when we're mapping them
+** to virtual addresses, adjust for the additional offset in these
+** macros.
+*/
+
+#define GPIO1_REG(off) (MSM_GPIO1_BASE + 0x800 + (off))
+#define GPIO2_REG(off) (MSM_GPIO2_BASE + 0xC00 + (off))
+
+/* output value */
+#define GPIO_OUT_0 GPIO1_REG(0x00) /* gpio 15-0 */
+#define GPIO_OUT_1 GPIO2_REG(0x00) /* gpio 42-16 */
+#define GPIO_OUT_2 GPIO1_REG(0x04) /* gpio 67-43 */
+#define GPIO_OUT_3 GPIO1_REG(0x08) /* gpio 94-68 */
+#define GPIO_OUT_4 GPIO1_REG(0x0C) /* gpio 106-95 */
+#define GPIO_OUT_5 GPIO1_REG(0x50) /* gpio 107-121 */
+
+/* same pin map as above, output enable */
+#define GPIO_OE_0 GPIO1_REG(0x10)
+#define GPIO_OE_1 GPIO2_REG(0x08)
+#define GPIO_OE_2 GPIO1_REG(0x14)
+#define GPIO_OE_3 GPIO1_REG(0x18)
+#define GPIO_OE_4 GPIO1_REG(0x1C)
+#define GPIO_OE_5 GPIO1_REG(0x54)
+
+/* same pin map as above, input read */
+#define GPIO_IN_0 GPIO1_REG(0x34)
+#define GPIO_IN_1 GPIO2_REG(0x20)
+#define GPIO_IN_2 GPIO1_REG(0x38)
+#define GPIO_IN_3 GPIO1_REG(0x3C)
+#define GPIO_IN_4 GPIO1_REG(0x40)
+#define GPIO_IN_5 GPIO1_REG(0x44)
+
+/* same pin map as above, 1=edge 0=level interrup */
+#define GPIO_INT_EDGE_0 GPIO1_REG(0x60)
+#define GPIO_INT_EDGE_1 GPIO2_REG(0x50)
+#define GPIO_INT_EDGE_2 GPIO1_REG(0x64)
+#define GPIO_INT_EDGE_3 GPIO1_REG(0x68)
+#define GPIO_INT_EDGE_4 GPIO1_REG(0x6C)
+#define GPIO_INT_EDGE_5 GPIO1_REG(0xC0)
+
+/* same pin map as above, 1=positive 0=negative */
+#define GPIO_INT_POS_0 GPIO1_REG(0x70)
+#define GPIO_INT_POS_1 GPIO2_REG(0x58)
+#define GPIO_INT_POS_2 GPIO1_REG(0x74)
+#define GPIO_INT_POS_3 GPIO1_REG(0x78)
+#define GPIO_INT_POS_4 GPIO1_REG(0x7C)
+#define GPIO_INT_POS_5 GPIO1_REG(0xBC)
+
+/* same pin map as above, interrupt enable */
+#define GPIO_INT_EN_0 GPIO1_REG(0x80)
+#define GPIO_INT_EN_1 GPIO2_REG(0x60)
+#define GPIO_INT_EN_2 GPIO1_REG(0x84)
+#define GPIO_INT_EN_3 GPIO1_REG(0x88)
+#define GPIO_INT_EN_4 GPIO1_REG(0x8C)
+#define GPIO_INT_EN_5 GPIO1_REG(0xB8)
+
+/* same pin map as above, write 1 to clear interrupt */
+#define GPIO_INT_CLEAR_0 GPIO1_REG(0x90)
+#define GPIO_INT_CLEAR_1 GPIO2_REG(0x68)
+#define GPIO_INT_CLEAR_2 GPIO1_REG(0x94)
+#define GPIO_INT_CLEAR_3 GPIO1_REG(0x98)
+#define GPIO_INT_CLEAR_4 GPIO1_REG(0x9C)
+#define GPIO_INT_CLEAR_5 GPIO1_REG(0xB4)
+
+/* same pin map as above, 1=interrupt pending */
+#define GPIO_INT_STATUS_0 GPIO1_REG(0xA0)
+#define GPIO_INT_STATUS_1 GPIO2_REG(0x70)
+#define GPIO_INT_STATUS_2 GPIO1_REG(0xA4)
+#define GPIO_INT_STATUS_3 GPIO1_REG(0xA8)
+#define GPIO_INT_STATUS_4 GPIO1_REG(0xAC)
+#define GPIO_INT_STATUS_5 GPIO1_REG(0xB0)
+
+#endif
diff --git a/arch/arm/mach-msm/include/mach/gpio.h b/arch/arm/mach-msm/include/mach/gpio.h
new file mode 100644
index 0000000..590573f
--- /dev/null
+++ b/arch/arm/mach-msm/include/mach/gpio.h
@@ -0,0 +1,47 @@
+/* linux/include/asm-arm/arch-msm/gpio.h
+ *
+ * Copyright (C) 2007 Google, Inc.
+ * Author: Mike Lockwood <lockwood(a)android.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __ASM_ARCH_MSM_GPIO_H
+#define __ASM_ARCH_MSM_GPIO_H
+
+#include <linux/interrupt.h>
+
+int gpio_request(unsigned gpio, const char *label);
+void gpio_free(unsigned gpio);
+int gpio_direction_input(unsigned gpio);
+int gpio_direction_output(unsigned gpio, int value);
+int gpio_get_value(unsigned gpio);
+void gpio_set_value(unsigned gpio, int value);
+int gpio_to_irq(unsigned gpio);
+
+#include <asm-generic/gpio.h>
+
+/* extended gpio api */
+
+#define GPIOF_IRQF_MASK 0x0000ffff /* use to specify edge detection without */
+#define GPIOF_IRQF_TRIGGER_NONE 0x00010000 /* IRQF_TRIGGER_NONE is 0 which also means "as already configured" */
+#define GPIOF_INPUT 0x00020000
+#define GPIOF_DRIVE_OUTPUT 0x00040000
+#define GPIOF_OUTPUT_LOW 0x00080000
+#define GPIOF_OUTPUT_HIGH 0x00100000
+
+#define GPIOIRQF_SHARED 0x00000001 /* the irq line is shared with other inputs */
+
+extern int gpio_configure(unsigned int gpio, unsigned long flags);
+extern int gpio_read_detect_status(unsigned int gpio);
+extern int gpio_clear_detect_status(unsigned int gpio);
+
+#endif
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index b31946e..7e0c1ac 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -69,6 +69,7 @@ msmsdcc_request_end(struct msmsdcc_host *host, struct mmc_request *mrq)

host->curr.mrq = NULL;
host->curr.cmd = NULL;
+ printk("msm..._request_end\n");

if (mrq->data)
mrq->data->bytes_xfered = host->curr.data_xfered;
@@ -119,6 +120,7 @@ msmsdcc_dma_complete_func(struct msm_dmov_cmd *cmd,
unsigned long flags;
struct mmc_request *mrq;

+ printk("data complete func\n");
spin_lock_irqsave(&host->lock, flags);
mrq = host->curr.mrq;
BUG_ON(!mrq);
@@ -360,6 +362,8 @@ msmsdcc_start_command(struct msmsdcc_host *host, struct mmc_command *cmd, u32 c)
{
void __iomem *base = host->base;

+ printk("start_command\n");
+
if (readl(base + MMCICOMMAND) & MCI_CPSM_ENABLE) {
writel(0, base + MMCICOMMAND);
udelay(2 + ((5 * 1000000) / host->clk_rate));
@@ -483,6 +487,7 @@ msmsdcc_pio_irq(int irq, void *dev_id)
void __iomem *base = host->base;
uint32_t status;

+ printk("msmsdcc_pio_irq\n");
status = readl(base + MMCISTATUS);

do {
@@ -589,6 +594,7 @@ msmsdcc_handle_irq_data(struct msmsdcc_host *host, u32 status,
{
struct mmc_data *data = host->curr.data;

+ printk("handle_irq_data\n");
if (!data)
return;

@@ -696,6 +702,7 @@ msmsdcc_request(struct mmc_host *mmc, struct mmc_request *mrq)
WARN_ON(host->curr.mrq != NULL);
WARN_ON(host->pwr == 0);

+ printk("msm..._request\n");
spin_lock_irqsave(&host->lock, flags);

host->stats.reqs++;
diff --git a/kernel/printk.c b/kernel/printk.c
index 2c98b0b..5f37e88 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -714,10 +714,12 @@ asmlinkage int vprintk(const char *fmt, va_list args)
printed_len += vscnprintf(printk_buf + printed_len,
sizeof(printk_buf) - printed_len, fmt, args);

+#if 0
{
extern void printascii(const char *);
printascii(printk_buf);
}
+#endif

p = printk_buf;


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From: Pavel Machek on 8 Nov 2009 03:20
Hi!

> > Good news is that GPIO support seems to work, and I am able to flash
> > the keyboard backlight.
> >
> > Does anyone have an idea what is wrong? Do I need some more
> > infrastructure to set up (DMA transfers or something?)?
> >
> > I'm only setting up one mmc channel; I believe the other one is for
> > wifi, and it should work like this...?
> > Pavel
> >
> > diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
> > index 91e6f5c..16c0faa 100644
> > --- a/arch/arm/mach-msm/Makefile
> > +++ b/arch/arm/mach-msm/Makefile
> > @@ -6,4 +6,4 @@ obj-y += clock.o clock-7x01a.o
> >
> > obj-$(CONFIG_MACH_HALIBUT) += board-halibut.o
> >
> > -obj-$(CONFIG_MACH_TROUT) += board-dream.o
> > +obj-$(CONFIG_MACH_TROUT) += board-dream.o board-dream-mmc.o board-dream-gpio.o generic_gpio.o
> > diff --git a/arch/arm/mach-msm/board-dream-gpio.c b/arch/arm/mach-msm/board-dream-gpio.c
> > new file mode 100644
> > index 0000000..7e86a99
> > --- /dev/null
> > +++ b/arch/arm/mach-msm/board-dream-gpio.c
> > @@ -0,0 +1,301 @@
> > +/* arch/arm/mach-msm/board-dream-gpio.c
> > + *
> > + * Copyright (C) 2008 Google, Inc.
> > + *
> > + * This software is licensed under the terms of the GNU General Public
> > + * License version 2, as published by the Free Software Foundation, and
> > + * may be copied, distributed, and modified under those terms.
> > + *
> > + * This program is distributed in the hope that it will be useful,
> > + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > + * GNU General Public License for more details.
> > + *
> > + */
> > +
> > +#include <linux/kernel.h>
> > +#include <linux/errno.h>
> > +#include <linux/irq.h>
> > +#include <linux/pm.h>
> > +#include <linux/sysdev.h>
> > +
> > +#include <asm/io.h>
> > +#include <asm/gpio.h>
> linux/gpio.h
> linux/io.h

I got compile errors when trying to use linux/gpio.h:

arch/arm/mach-msm/board-dream-gpio.c: In function
'dream_gpio_configure':
arch/arm/mach-msm/board-dream-gpio.c:109: error: 'GPIOF_OUTPUT_LOW'
undeclared (first use in this function)
arch/arm/mach-msm/board-dream-gpio.c:109: error: (Each undeclared
identifier is reported only once
arch/arm/mach-msm/board-dream-gpio.c:109: error: for each function it
appears in.)
arch/arm/mach-msm/board-dream-gpio.c:109: error: 'GPIOF_OUTPUT_HIGH'
undeclared (first use in this function)
arch/arm/mach-msm/board-dream-gpio.c: In function 'dream_init_gpio':
arch/arm/mach-msm/board-dream-gpio.c:291: error: 'IRQF_TRIGGER_HIGH'
undeclared (first use in this function)
arch/arm/mach-msm/board-dream-gpio.c:293: error: implicit declaration
of function 'set_irq_wake'

> and why can't use you use gpiolib?

This is what I inherited from google. What advantages are there to it?
I'll eventually take a look.

Pavel

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From: Russell King - ARM Linux on 8 Nov 2009 04:20
On Sun, Nov 08, 2009 at 09:13:14AM +0100, Pavel Machek wrote:
> > > +#include <asm/io.h>
> > > +#include <asm/gpio.h>
> > linux/gpio.h
> > linux/io.h
>
> I got compile errors when trying to use linux/gpio.h:
>
> arch/arm/mach-msm/board-dream-gpio.c: In function
> 'dream_gpio_configure':
> arch/arm/mach-msm/board-dream-gpio.c:109: error: 'GPIOF_OUTPUT_LOW'
> undeclared (first use in this function)

This means it's abusing the gpio header files - which are intended for
the generic GPIO support, but are being used for this platforms private
non-generic GPIO based stuff.

> arch/arm/mach-msm/board-dream-gpio.c:291: error: 'IRQF_TRIGGER_HIGH'
> undeclared (first use in this function)
> arch/arm/mach-msm/board-dream-gpio.c:293: error: implicit declaration
> of function 'set_irq_wake'

That's showing its missing a linux/interrupt.h include.
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From: Arve Hjønnevåg on 8 Nov 2009 21:20
On Sun, Nov 8, 2009 at 1:10 AM, Russell King - ARM Linux
<linux(a)arm.linux.org.uk> wrote:
> On Sun, Nov 08, 2009 at 09:13:14AM +0100, Pavel Machek wrote:
>> > > +#include <asm/io.h>
>> > > +#include <asm/gpio.h>
>> > linux/gpio.h
>> > linux/io.h
>>
>> I got compile errors when trying to use linux/gpio.h:
>>
>> arch/arm/mach-msm/board-dream-gpio.c: In function
>> 'dream_gpio_configure':
>> arch/arm/mach-msm/board-dream-gpio.c:109: error: 'GPIOF_OUTPUT_LOW'
>> undeclared (first use in this function)
>
> This means it's abusing the gpio header files - which are intended for
> the generic GPIO support, but are being used for this platforms private
> non-generic GPIO based stuff.
>

It also means that CONFIG_GENERIC_GPIO is not set, so linux/gpio.h
stubbed out all the gpio functions.

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From: Pavel Machek on 8 Dec 2009 05:30
On Sun 2009-11-08 09:10:10, Russell King - ARM Linux wrote:
> On Sun, Nov 08, 2009 at 09:13:14AM +0100, Pavel Machek wrote:
> > > > +#include <asm/io.h>
> > > > +#include <asm/gpio.h>
> > > linux/gpio.h
> > > linux/io.h
> >
> > I got compile errors when trying to use linux/gpio.h:
> >
> > arch/arm/mach-msm/board-dream-gpio.c: In function
> > 'dream_gpio_configure':
> > arch/arm/mach-msm/board-dream-gpio.c:109: error: 'GPIOF_OUTPUT_LOW'
> > undeclared (first use in this function)
>
> This means it's abusing the gpio header files - which are intended for
> the generic GPIO support, but are being used for this platforms private
> non-generic GPIO based stuff.

Ok, will fix.
Pavel
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