[PATCH 1/2] msm: Install the Google-Android gpio driver.
Gregory Bean
gbean at codeaurora.org
Mon Aug 30 20:18:25 EDT 2010
From: Arve Hjønnevåg <arve at android.com>
As part of the ongoing effort to converge on a common code base,
adopt the Google-Android msmgpio driver, as it has a stronger pedigree
than the previous submission from codeaurora.
Cc: Arve Hjønnevåg <arve at android.com>
Signed-off-by: Gregory Bean <gbean at codeaurora.org>
---
arch/arm/mach-msm/Makefile | 3 +
arch/arm/mach-msm/gpio.c | 627 +++++++++++++++++++++++++++++++++++++++++++
arch/arm/mach-msm/gpio_hw.h | 277 +++++++++++++++++++
3 files changed, 907 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-msm/gpio.c
create mode 100644 arch/arm/mach-msm/gpio_hw.h
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index 2263b8f..c95d19a 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -22,3 +22,6 @@ obj-$(CONFIG_ARCH_QSD8X50) += board-qsd8x50.o devices-qsd8x50.o
obj-$(CONFIG_ARCH_MSM7X30) += gpiomux-7x30.o gpiomux-v1.o gpiomux.o
obj-$(CONFIG_ARCH_QSD8X50) += gpiomux-8x50.o gpiomux-v1.o gpiomux.o
obj-$(CONFIG_ARCH_MSM8X60) += gpiomux-8x60.o gpiomux-v2.o gpiomux.o
+ifndef CONFIG_MSM_V2_TLMM
+obj-y += gpio.o
+endif
diff --git a/arch/arm/mach-msm/gpio.c b/arch/arm/mach-msm/gpio.c
new file mode 100644
index 0000000..fd899a1
--- /dev/null
+++ b/arch/arm/mach-msm/gpio.c
@@ -0,0 +1,627 @@
+/* linux/arch/arm/mach-msm/gpio.c
+ *
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
+ *
+ * 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/bitops.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include "gpio_hw.h"
+#include "proc_comm.h"
+#include "smd_private.h"
+
+#define FIRST_GPIO_IRQ MSM_GPIO_TO_INT(0)
+
+enum {
+ GPIO_DEBUG_SLEEP = 1U << 0,
+};
+static int msm_gpio_debug_mask;
+module_param_named(debug_mask, msm_gpio_debug_mask, int,
+ S_IRUGO | S_IWUSR | S_IWGRP);
+
+#define MSM_GPIO_BROKEN_INT_CLEAR 1
+
+struct msm_gpio_regs {
+ void __iomem *out;
+ void __iomem *in;
+ void __iomem *int_status;
+ void __iomem *int_clear;
+ void __iomem *int_en;
+ void __iomem *int_edge;
+ void __iomem *int_pos;
+ void __iomem *oe;
+};
+
+struct msm_gpio_chip {
+ spinlock_t lock;
+ struct gpio_chip chip;
+ struct msm_gpio_regs regs;
+#if MSM_GPIO_BROKEN_INT_CLEAR
+ unsigned int_status_copy;
+#endif
+ unsigned int both_edge_detect;
+ unsigned int int_enable[2]; /* 0: awake, 1: sleep */
+};
+
+static int msm_gpio_write(struct msm_gpio_chip *msm_chip,
+ unsigned offset, unsigned on)
+{
+ unsigned b = 1U << offset;
+ unsigned v;
+
+ v = readl(msm_chip->regs.out);
+ if (on)
+ writel(v | b, msm_chip->regs.out);
+ else
+ writel(v & (~b), msm_chip->regs.out);
+ return 0;
+}
+
+static void msm_gpio_update_both_edge_detect(struct msm_gpio_chip *msm_chip)
+{
+ int loop_limit = 100;
+ unsigned pol, val, val2, intstat;
+ do {
+ val = readl(msm_chip->regs.in);
+ pol = readl(msm_chip->regs.int_pos);
+ pol = (pol & ~msm_chip->both_edge_detect) |
+ (~val & msm_chip->both_edge_detect);
+ writel(pol, msm_chip->regs.int_pos);
+ intstat = readl(msm_chip->regs.int_status);
+ val2 = readl(msm_chip->regs.in);
+ if (((val ^ val2) & msm_chip->both_edge_detect & ~intstat) == 0)
+ return;
+ } while (loop_limit-- > 0);
+ printk(KERN_ERR "msm_gpio_update_both_edge_detect, "
+ "failed to reach stable state %x != %x\n", val, val2);
+}
+
+static int msm_gpio_clear_detect_status(struct msm_gpio_chip *msm_chip,
+ unsigned offset)
+{
+ unsigned b = BIT(offset);
+
+#if MSM_GPIO_BROKEN_INT_CLEAR
+ /* Save interrupts that already triggered before we loose them. */
+ /* Any interrupt that triggers between the read of int_status */
+ /* and the write to int_clear will still be lost though. */
+ msm_chip->int_status_copy |= readl(msm_chip->regs.int_status);
+ msm_chip->int_status_copy &= ~b;
+#endif
+ writel(b, msm_chip->regs.int_clear);
+ msm_gpio_update_both_edge_detect(msm_chip);
+ return 0;
+}
+
+static int msm_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+ struct msm_gpio_chip *msm_chip;
+ unsigned long irq_flags;
+
+ msm_chip = container_of(chip, struct msm_gpio_chip, chip);
+ spin_lock_irqsave(&msm_chip->lock, irq_flags);
+ writel(readl(msm_chip->regs.oe) & ~BIT(offset), msm_chip->regs.oe);
+ spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
+ return 0;
+}
+
+static int
+msm_gpio_direction_output(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct msm_gpio_chip *msm_chip;
+ unsigned long irq_flags;
+
+ msm_chip = container_of(chip, struct msm_gpio_chip, chip);
+ spin_lock_irqsave(&msm_chip->lock, irq_flags);
+ msm_gpio_write(msm_chip, offset, value);
+ writel(readl(msm_chip->regs.oe) | BIT(offset), msm_chip->regs.oe);
+ spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
+ return 0;
+}
+
+static int msm_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct msm_gpio_chip *msm_chip;
+
+ msm_chip = container_of(chip, struct msm_gpio_chip, chip);
+ return (readl(msm_chip->regs.in) & (1U << offset)) ? 1 : 0;
+}
+
+static void msm_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct msm_gpio_chip *msm_chip;
+ unsigned long irq_flags;
+
+ msm_chip = container_of(chip, struct msm_gpio_chip, chip);
+ spin_lock_irqsave(&msm_chip->lock, irq_flags);
+ msm_gpio_write(msm_chip, offset, value);
+ spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
+}
+
+static int msm_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+ return MSM_GPIO_TO_INT(chip->base + offset);
+}
+
+struct msm_gpio_chip msm_gpio_chips[] = {
+ {
+ .regs = {
+ .out = GPIO_OUT_0,
+ .in = GPIO_IN_0,
+ .int_status = GPIO_INT_STATUS_0,
+ .int_clear = GPIO_INT_CLEAR_0,
+ .int_en = GPIO_INT_EN_0,
+ .int_edge = GPIO_INT_EDGE_0,
+ .int_pos = GPIO_INT_POS_0,
+ .oe = GPIO_OE_0,
+ },
+ .chip = {
+ .base = 0,
+ .ngpio = 16,
+ .get = msm_gpio_get,
+ .set = msm_gpio_set,
+ .direction_input = msm_gpio_direction_input,
+ .direction_output = msm_gpio_direction_output,
+ .to_irq = msm_gpio_to_irq,
+ }
+ },
+ {
+ .regs = {
+ .out = GPIO_OUT_1,
+ .in = GPIO_IN_1,
+ .int_status = GPIO_INT_STATUS_1,
+ .int_clear = GPIO_INT_CLEAR_1,
+ .int_en = GPIO_INT_EN_1,
+ .int_edge = GPIO_INT_EDGE_1,
+ .int_pos = GPIO_INT_POS_1,
+ .oe = GPIO_OE_1,
+ },
+ .chip = {
+ .base = 16,
+#if defined(CONFIG_ARCH_MSM7X30)
+ .ngpio = 28,
+#else
+ .ngpio = 27,
+#endif
+ .get = msm_gpio_get,
+ .set = msm_gpio_set,
+ .direction_input = msm_gpio_direction_input,
+ .direction_output = msm_gpio_direction_output,
+ .to_irq = msm_gpio_to_irq,
+ }
+ },
+ {
+ .regs = {
+ .out = GPIO_OUT_2,
+ .in = GPIO_IN_2,
+ .int_status = GPIO_INT_STATUS_2,
+ .int_clear = GPIO_INT_CLEAR_2,
+ .int_en = GPIO_INT_EN_2,
+ .int_edge = GPIO_INT_EDGE_2,
+ .int_pos = GPIO_INT_POS_2,
+ .oe = GPIO_OE_2,
+ },
+ .chip = {
+#if defined(CONFIG_ARCH_MSM7X30)
+ .base = 44,
+ .ngpio = 24,
+#else
+ .base = 43,
+ .ngpio = 25,
+#endif
+ .get = msm_gpio_get,
+ .set = msm_gpio_set,
+ .direction_input = msm_gpio_direction_input,
+ .direction_output = msm_gpio_direction_output,
+ .to_irq = msm_gpio_to_irq,
+ }
+ },
+ {
+ .regs = {
+ .out = GPIO_OUT_3,
+ .in = GPIO_IN_3,
+ .int_status = GPIO_INT_STATUS_3,
+ .int_clear = GPIO_INT_CLEAR_3,
+ .int_en = GPIO_INT_EN_3,
+ .int_edge = GPIO_INT_EDGE_3,
+ .int_pos = GPIO_INT_POS_3,
+ .oe = GPIO_OE_3,
+ },
+ .chip = {
+ .base = 68,
+ .ngpio = 27,
+ .get = msm_gpio_get,
+ .set = msm_gpio_set,
+ .direction_input = msm_gpio_direction_input,
+ .direction_output = msm_gpio_direction_output,
+ .to_irq = msm_gpio_to_irq,
+ }
+ },
+ {
+ .regs = {
+ .out = GPIO_OUT_4,
+ .in = GPIO_IN_4,
+ .int_status = GPIO_INT_STATUS_4,
+ .int_clear = GPIO_INT_CLEAR_4,
+ .int_en = GPIO_INT_EN_4,
+ .int_edge = GPIO_INT_EDGE_4,
+ .int_pos = GPIO_INT_POS_4,
+ .oe = GPIO_OE_4,
+ },
+ .chip = {
+ .base = 95,
+#if defined(CONFIG_ARCH_QSD8X50)
+ .ngpio = 9,
+#else
+ .ngpio = 12,
+#endif
+ .get = msm_gpio_get,
+ .set = msm_gpio_set,
+ .direction_input = msm_gpio_direction_input,
+ .direction_output = msm_gpio_direction_output,
+ .to_irq = msm_gpio_to_irq,
+ }
+ },
+ {
+ .regs = {
+ .out = GPIO_OUT_5,
+ .in = GPIO_IN_5,
+ .int_status = GPIO_INT_STATUS_5,
+ .int_clear = GPIO_INT_CLEAR_5,
+ .int_en = GPIO_INT_EN_5,
+ .int_edge = GPIO_INT_EDGE_5,
+ .int_pos = GPIO_INT_POS_5,
+ .oe = GPIO_OE_5,
+ },
+ .chip = {
+#if defined(CONFIG_ARCH_QSD8X50)
+ .base = 104,
+ .ngpio = 18,
+#elif defined(CONFIG_ARCH_MSM7X30)
+ .base = 107,
+ .ngpio = 27,
+#elif defined(CONFIG_ARCH_MSM7X27)
+ .base = 107,
+ .ngpio = 26,
+#else
+ .base = 107,
+ .ngpio = 15,
+#endif
+ .get = msm_gpio_get,
+ .set = msm_gpio_set,
+ .direction_input = msm_gpio_direction_input,
+ .direction_output = msm_gpio_direction_output,
+ .to_irq = msm_gpio_to_irq,
+ }
+ },
+#if defined(CONFIG_ARCH_QSD8X50) || defined(CONFIG_ARCH_MSM7X30)
+ {
+ .regs = {
+ .out = GPIO_OUT_6,
+ .in = GPIO_IN_6,
+ .int_status = GPIO_INT_STATUS_6,
+ .int_clear = GPIO_INT_CLEAR_6,
+ .int_en = GPIO_INT_EN_6,
+ .int_edge = GPIO_INT_EDGE_6,
+ .int_pos = GPIO_INT_POS_6,
+ .oe = GPIO_OE_6,
+ },
+ .chip = {
+#if defined(CONFIG_ARCH_MSM7X30)
+ .base = 134,
+ .ngpio = 17,
+#else
+ .base = 122,
+ .ngpio = 31,
+#endif
+ .get = msm_gpio_get,
+ .set = msm_gpio_set,
+ .direction_input = msm_gpio_direction_input,
+ .direction_output = msm_gpio_direction_output,
+ .to_irq = msm_gpio_to_irq,
+ }
+ },
+ {
+ .regs = {
+ .out = GPIO_OUT_7,
+ .in = GPIO_IN_7,
+ .int_status = GPIO_INT_STATUS_7,
+ .int_clear = GPIO_INT_CLEAR_7,
+ .int_en = GPIO_INT_EN_7,
+ .int_edge = GPIO_INT_EDGE_7,
+ .int_pos = GPIO_INT_POS_7,
+ .oe = GPIO_OE_7,
+ },
+ .chip = {
+#if defined(CONFIG_ARCH_MSM7X30)
+ .base = 151,
+ .ngpio = 31,
+#else
+ .base = 153,
+ .ngpio = 12,
+#endif
+ .get = msm_gpio_get,
+ .set = msm_gpio_set,
+ .direction_input = msm_gpio_direction_input,
+ .direction_output = msm_gpio_direction_output,
+ .to_irq = msm_gpio_to_irq,
+ }
+ },
+#endif
+};
+
+static void msm_gpio_irq_ack(unsigned int irq)
+{
+ unsigned long irq_flags;
+ struct msm_gpio_chip *msm_chip = get_irq_chip_data(irq);
+ spin_lock_irqsave(&msm_chip->lock, irq_flags);
+ msm_gpio_clear_detect_status(msm_chip,
+ irq - gpio_to_irq(msm_chip->chip.base));
+ spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
+}
+
+static void msm_gpio_irq_mask(unsigned int irq)
+{
+ unsigned long irq_flags;
+ struct msm_gpio_chip *msm_chip = get_irq_chip_data(irq);
+ unsigned offset = irq - gpio_to_irq(msm_chip->chip.base);
+
+ spin_lock_irqsave(&msm_chip->lock, irq_flags);
+ /* level triggered interrupts are also latched */
+ if (!(readl(msm_chip->regs.int_edge) & BIT(offset)))
+ msm_gpio_clear_detect_status(msm_chip, offset);
+ msm_chip->int_enable[0] &= ~BIT(offset);
+ writel(msm_chip->int_enable[0], msm_chip->regs.int_en);
+ spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
+}
+
+static void msm_gpio_irq_unmask(unsigned int irq)
+{
+ unsigned long irq_flags;
+ struct msm_gpio_chip *msm_chip = get_irq_chip_data(irq);
+ unsigned offset = irq - gpio_to_irq(msm_chip->chip.base);
+
+ spin_lock_irqsave(&msm_chip->lock, irq_flags);
+ /* level triggered interrupts are also latched */
+ if (!(readl(msm_chip->regs.int_edge) & BIT(offset)))
+ msm_gpio_clear_detect_status(msm_chip, offset);
+ msm_chip->int_enable[0] |= BIT(offset);
+ writel(msm_chip->int_enable[0], msm_chip->regs.int_en);
+ spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
+}
+
+static int msm_gpio_irq_set_wake(unsigned int irq, unsigned int on)
+{
+ unsigned long irq_flags;
+ struct msm_gpio_chip *msm_chip = get_irq_chip_data(irq);
+ unsigned offset = irq - gpio_to_irq(msm_chip->chip.base);
+
+ spin_lock_irqsave(&msm_chip->lock, irq_flags);
+
+ if (on)
+ msm_chip->int_enable[1] |= BIT(offset);
+ else
+ msm_chip->int_enable[1] &= ~BIT(offset);
+
+ spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
+ return 0;
+}
+
+static int msm_gpio_irq_set_type(unsigned int irq, unsigned int flow_type)
+{
+ unsigned long irq_flags;
+ struct msm_gpio_chip *msm_chip = get_irq_chip_data(irq);
+ unsigned offset = irq - gpio_to_irq(msm_chip->chip.base);
+ unsigned v, b = BIT(offset);
+
+ spin_lock_irqsave(&msm_chip->lock, irq_flags);
+ v = readl(msm_chip->regs.int_edge);
+ if (flow_type & IRQ_TYPE_EDGE_BOTH) {
+ writel(v | b, msm_chip->regs.int_edge);
+ irq_desc[irq].handle_irq = handle_edge_irq;
+ } else {
+ writel(v & ~b, msm_chip->regs.int_edge);
+ irq_desc[irq].handle_irq = handle_level_irq;
+ }
+ if ((flow_type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH) {
+ msm_chip->both_edge_detect |= b;
+ msm_gpio_update_both_edge_detect(msm_chip);
+ } else {
+ msm_chip->both_edge_detect &= ~b;
+ v = readl(msm_chip->regs.int_pos);
+ if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_HIGH))
+ writel(v | b, msm_chip->regs.int_pos);
+ else
+ writel(v & ~b, msm_chip->regs.int_pos);
+ }
+ spin_unlock_irqrestore(&msm_chip->lock, irq_flags);
+ return 0;
+}
+
+static void msm_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
+{
+ int i, j, m;
+ unsigned v;
+
+ for (i = 0; i < ARRAY_SIZE(msm_gpio_chips); i++) {
+ struct msm_gpio_chip *msm_chip = &msm_gpio_chips[i];
+ v = readl(msm_chip->regs.int_status);
+ v &= msm_chip->int_enable[0];
+ while (v) {
+ m = v & -v;
+ j = fls(m) - 1;
+ /* printk("%s %08x %08x bit %d gpio %d irq %d\n",
+ __func__, v, m, j, msm_chip->chip.start + j,
+ FIRST_GPIO_IRQ + msm_chip->chip.start + j); */
+ v &= ~m;
+ generic_handle_irq(FIRST_GPIO_IRQ +
+ msm_chip->chip.base + j);
+ }
+ }
+ desc->chip->ack(irq);
+}
+
+static struct irq_chip msm_gpio_irq_chip = {
+ .name = "msmgpio",
+ .ack = msm_gpio_irq_ack,
+ .mask = msm_gpio_irq_mask,
+ .unmask = msm_gpio_irq_unmask,
+ .set_wake = msm_gpio_irq_set_wake,
+ .set_type = msm_gpio_irq_set_type,
+};
+
+#define NUM_GPIO_SMEM_BANKS 6
+#define GPIO_SMEM_NUM_GROUPS 2
+#define GPIO_SMEM_MAX_PC_INTERRUPTS 8
+struct tramp_gpio_smem {
+ uint16_t num_fired[GPIO_SMEM_NUM_GROUPS];
+ uint16_t fired[GPIO_SMEM_NUM_GROUPS][GPIO_SMEM_MAX_PC_INTERRUPTS];
+ uint32_t enabled[NUM_GPIO_SMEM_BANKS];
+ uint32_t detection[NUM_GPIO_SMEM_BANKS];
+ uint32_t polarity[NUM_GPIO_SMEM_BANKS];
+};
+
+static void msm_gpio_sleep_int(unsigned long arg)
+{
+ int i, j;
+ struct tramp_gpio_smem *smem_gpio;
+
+ BUILD_BUG_ON(NR_GPIO_IRQS > NUM_GPIO_SMEM_BANKS * 32);
+
+ smem_gpio = smem_alloc(SMEM_GPIO_INT, sizeof(*smem_gpio));
+ if (smem_gpio == NULL)
+ return;
+
+ local_irq_disable();
+ for (i = 0; i < GPIO_SMEM_NUM_GROUPS; i++) {
+ int count = smem_gpio->num_fired[i];
+ for (j = 0; j < count; j++) {
+ /* TODO: Check mask */
+ generic_handle_irq(
+ MSM_GPIO_TO_INT(smem_gpio->fired[i][j]));
+ }
+ }
+ local_irq_enable();
+}
+
+static DECLARE_TASKLET(msm_gpio_sleep_int_tasklet, msm_gpio_sleep_int, 0);
+
+void msm_gpio_enter_sleep(int from_idle)
+{
+ int i;
+ struct tramp_gpio_smem *smem_gpio;
+
+ smem_gpio = smem_alloc(SMEM_GPIO_INT, sizeof(*smem_gpio));
+
+ if (smem_gpio) {
+ for (i = 0; i < ARRAY_SIZE(smem_gpio->enabled); i++) {
+ smem_gpio->enabled[i] = 0;
+ smem_gpio->detection[i] = 0;
+ smem_gpio->polarity[i] = 0;
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(msm_gpio_chips); i++) {
+ writel(msm_gpio_chips[i].int_enable[!from_idle],
+ msm_gpio_chips[i].regs.int_en);
+ if (smem_gpio) {
+ uint32_t tmp;
+ int start, index, shiftl, shiftr;
+ start = msm_gpio_chips[i].chip.base;
+ index = start / 32;
+ shiftl = start % 32;
+ shiftr = 32 - shiftl;
+ tmp = msm_gpio_chips[i].int_enable[!from_idle];
+ smem_gpio->enabled[index] |= tmp << shiftl;
+ smem_gpio->enabled[index+1] |= tmp >> shiftr;
+ smem_gpio->detection[index] |=
+ readl(msm_gpio_chips[i].regs.int_edge) <<
+ shiftl;
+ smem_gpio->detection[index+1] |=
+ readl(msm_gpio_chips[i].regs.int_edge) >>
+ shiftr;
+ smem_gpio->polarity[index] |=
+ readl(msm_gpio_chips[i].regs.int_pos) << shiftl;
+ smem_gpio->polarity[index+1] |=
+ readl(msm_gpio_chips[i].regs.int_pos) >> shiftr;
+ }
+ }
+
+ if (smem_gpio) {
+ if (msm_gpio_debug_mask & GPIO_DEBUG_SLEEP)
+ for (i = 0; i < ARRAY_SIZE(smem_gpio->enabled); i++) {
+ printk("msm_gpio_enter_sleep gpio %d-%d: enable"
+ " %08x, edge %08x, polarity %08x\n",
+ i * 32, i * 32 + 31,
+ smem_gpio->enabled[i],
+ smem_gpio->detection[i],
+ smem_gpio->polarity[i]);
+ }
+ for (i = 0; i < GPIO_SMEM_NUM_GROUPS; i++)
+ smem_gpio->num_fired[i] = 0;
+ }
+}
+
+void msm_gpio_exit_sleep(void)
+{
+ int i;
+ struct tramp_gpio_smem *smem_gpio;
+
+ smem_gpio = smem_alloc(SMEM_GPIO_INT, sizeof(*smem_gpio));
+
+ for (i = 0; i < ARRAY_SIZE(msm_gpio_chips); i++) {
+ writel(msm_gpio_chips[i].int_enable[0],
+ msm_gpio_chips[i].regs.int_en);
+ }
+
+ if (smem_gpio && (smem_gpio->num_fired[0] || smem_gpio->num_fired[1])) {
+ if (msm_gpio_debug_mask & GPIO_DEBUG_SLEEP)
+ printk(KERN_INFO "gpio: fired %x %x\n",
+ smem_gpio->num_fired[0], smem_gpio->num_fired[1]);
+ tasklet_schedule(&msm_gpio_sleep_int_tasklet);
+ }
+}
+
+static int __init msm_init_gpio(void)
+{
+ int i, j = 0;
+
+ for (i = FIRST_GPIO_IRQ; i < FIRST_GPIO_IRQ + NR_GPIO_IRQS; i++) {
+ if (i - FIRST_GPIO_IRQ >=
+ msm_gpio_chips[j].chip.base +
+ msm_gpio_chips[j].chip.ngpio)
+ j++;
+ set_irq_chip_data(i, &msm_gpio_chips[j]);
+ set_irq_chip(i, &msm_gpio_irq_chip);
+ set_irq_handler(i, handle_edge_irq);
+ set_irq_flags(i, IRQF_VALID);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(msm_gpio_chips); i++) {
+ spin_lock_init(&msm_gpio_chips[i].lock);
+ writel(0, msm_gpio_chips[i].regs.int_en);
+ gpiochip_add(&msm_gpio_chips[i].chip);
+ }
+
+ set_irq_chained_handler(INT_GPIO_GROUP1, msm_gpio_irq_handler);
+ set_irq_chained_handler(INT_GPIO_GROUP2, msm_gpio_irq_handler);
+ set_irq_wake(INT_GPIO_GROUP1, 1);
+ set_irq_wake(INT_GPIO_GROUP2, 2);
+ return 0;
+}
+
+postcore_initcall(msm_init_gpio);
diff --git a/arch/arm/mach-msm/gpio_hw.h b/arch/arm/mach-msm/gpio_hw.h
new file mode 100644
index 0000000..74c22cf
--- /dev/null
+++ b/arch/arm/mach-msm/gpio_hw.h
@@ -0,0 +1,277 @@
+/* arch/arm/mach-msm/gpio_hw.h
+ *
+ * Copyright (C) 2007 Google, Inc.
+ * Author: Brian Swetland <swetland at google.com>
+ * Copyright (c) 2008-2010, Code Aurora Forum. All rights reserved.
+ *
+ * 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.
+*/
+
+#if defined(CONFIG_ARCH_MSM7X30)
+#define GPIO1_REG(off) (MSM_GPIO1_BASE + (off))
+#define GPIO2_REG(off) (MSM_GPIO2_BASE + 0x400 + (off))
+#else
+#define GPIO1_REG(off) (MSM_GPIO1_BASE + 0x800 + (off))
+#define GPIO2_REG(off) (MSM_GPIO2_BASE + 0xC00 + (off))
+#endif
+
+#if defined(CONFIG_ARCH_MSM7X00A) || defined(CONFIG_ARCH_MSM7X27)
+
+/* 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
+
+#if defined(CONFIG_ARCH_QSD8X50)
+/* 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 103-95 */
+#define GPIO_OUT_5 GPIO1_REG(0x10) /* gpio 121-104 */
+#define GPIO_OUT_6 GPIO1_REG(0x14) /* gpio 152-122 */
+#define GPIO_OUT_7 GPIO1_REG(0x18) /* gpio 164-153 */
+
+/* same pin map as above, output enable */
+#define GPIO_OE_0 GPIO1_REG(0x20)
+#define GPIO_OE_1 GPIO2_REG(0x08)
+#define GPIO_OE_2 GPIO1_REG(0x24)
+#define GPIO_OE_3 GPIO1_REG(0x28)
+#define GPIO_OE_4 GPIO1_REG(0x2C)
+#define GPIO_OE_5 GPIO1_REG(0x30)
+#define GPIO_OE_6 GPIO1_REG(0x34)
+#define GPIO_OE_7 GPIO1_REG(0x38)
+
+/* same pin map as above, input read */
+#define GPIO_IN_0 GPIO1_REG(0x50)
+#define GPIO_IN_1 GPIO2_REG(0x20)
+#define GPIO_IN_2 GPIO1_REG(0x54)
+#define GPIO_IN_3 GPIO1_REG(0x58)
+#define GPIO_IN_4 GPIO1_REG(0x5C)
+#define GPIO_IN_5 GPIO1_REG(0x60)
+#define GPIO_IN_6 GPIO1_REG(0x64)
+#define GPIO_IN_7 GPIO1_REG(0x68)
+
+/* same pin map as above, 1=edge 0=level interrup */
+#define GPIO_INT_EDGE_0 GPIO1_REG(0x70)
+#define GPIO_INT_EDGE_1 GPIO2_REG(0x50)
+#define GPIO_INT_EDGE_2 GPIO1_REG(0x74)
+#define GPIO_INT_EDGE_3 GPIO1_REG(0x78)
+#define GPIO_INT_EDGE_4 GPIO1_REG(0x7C)
+#define GPIO_INT_EDGE_5 GPIO1_REG(0x80)
+#define GPIO_INT_EDGE_6 GPIO1_REG(0x84)
+#define GPIO_INT_EDGE_7 GPIO1_REG(0x88)
+
+/* same pin map as above, 1=positive 0=negative */
+#define GPIO_INT_POS_0 GPIO1_REG(0x90)
+#define GPIO_INT_POS_1 GPIO2_REG(0x58)
+#define GPIO_INT_POS_2 GPIO1_REG(0x94)
+#define GPIO_INT_POS_3 GPIO1_REG(0x98)
+#define GPIO_INT_POS_4 GPIO1_REG(0x9C)
+#define GPIO_INT_POS_5 GPIO1_REG(0xA0)
+#define GPIO_INT_POS_6 GPIO1_REG(0xA4)
+#define GPIO_INT_POS_7 GPIO1_REG(0xA8)
+
+/* same pin map as above, interrupt enable */
+#define GPIO_INT_EN_0 GPIO1_REG(0xB0)
+#define GPIO_INT_EN_1 GPIO2_REG(0x60)
+#define GPIO_INT_EN_2 GPIO1_REG(0xB4)
+#define GPIO_INT_EN_3 GPIO1_REG(0xB8)
+#define GPIO_INT_EN_4 GPIO1_REG(0xBC)
+#define GPIO_INT_EN_5 GPIO1_REG(0xC0)
+#define GPIO_INT_EN_6 GPIO1_REG(0xC4)
+#define GPIO_INT_EN_7 GPIO1_REG(0xC8)
+
+/* same pin map as above, write 1 to clear interrupt */
+#define GPIO_INT_CLEAR_0 GPIO1_REG(0xD0)
+#define GPIO_INT_CLEAR_1 GPIO2_REG(0x68)
+#define GPIO_INT_CLEAR_2 GPIO1_REG(0xD4)
+#define GPIO_INT_CLEAR_3 GPIO1_REG(0xD8)
+#define GPIO_INT_CLEAR_4 GPIO1_REG(0xDC)
+#define GPIO_INT_CLEAR_5 GPIO1_REG(0xE0)
+#define GPIO_INT_CLEAR_6 GPIO1_REG(0xE4)
+#define GPIO_INT_CLEAR_7 GPIO1_REG(0xE8)
+
+/* same pin map as above, 1=interrupt pending */
+#define GPIO_INT_STATUS_0 GPIO1_REG(0xF0)
+#define GPIO_INT_STATUS_1 GPIO2_REG(0x70)
+#define GPIO_INT_STATUS_2 GPIO1_REG(0xF4)
+#define GPIO_INT_STATUS_3 GPIO1_REG(0xF8)
+#define GPIO_INT_STATUS_4 GPIO1_REG(0xFC)
+#define GPIO_INT_STATUS_5 GPIO1_REG(0x100)
+#define GPIO_INT_STATUS_6 GPIO1_REG(0x104)
+#define GPIO_INT_STATUS_7 GPIO1_REG(0x108)
+
+#endif
+
+#if defined(CONFIG_ARCH_MSM7X30)
+
+/* output value */
+#define GPIO_OUT_0 GPIO1_REG(0x00) /* gpio 15-0 */
+#define GPIO_OUT_1 GPIO2_REG(0x00) /* gpio 43-16 */
+#define GPIO_OUT_2 GPIO1_REG(0x04) /* gpio 67-44 */
+#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 133-107 */
+#define GPIO_OUT_6 GPIO1_REG(0xC4) /* gpio 150-134 */
+#define GPIO_OUT_7 GPIO1_REG(0x214) /* gpio 181-151 */
+
+/* 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)
+#define GPIO_OE_6 GPIO1_REG(0xC8)
+#define GPIO_OE_7 GPIO1_REG(0x218)
+
+/* 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)
+#define GPIO_IN_6 GPIO1_REG(0xCC)
+#define GPIO_IN_7 GPIO1_REG(0x21C)
+
+/* 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)
+#define GPIO_INT_EDGE_6 GPIO1_REG(0xD0)
+#define GPIO_INT_EDGE_7 GPIO1_REG(0x240)
+
+/* 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)
+#define GPIO_INT_POS_6 GPIO1_REG(0xD4)
+#define GPIO_INT_POS_7 GPIO1_REG(0x228)
+
+/* 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)
+#define GPIO_INT_EN_6 GPIO1_REG(0xD8)
+#define GPIO_INT_EN_7 GPIO1_REG(0x22C)
+
+/* 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)
+#define GPIO_INT_CLEAR_6 GPIO1_REG(0xDC)
+#define GPIO_INT_CLEAR_7 GPIO1_REG(0x230)
+
+/* 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)
+#define GPIO_INT_STATUS_6 GPIO1_REG(0xE0)
+#define GPIO_INT_STATUS_7 GPIO1_REG(0x234)
+
+#endif
+
+#endif
--
1.7.0.4
--
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Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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