Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755893Ab0HaASc (ORCPT ); Mon, 30 Aug 2010 20:18:32 -0400 Received: from wolverine01.qualcomm.com ([199.106.114.254]:53596 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754692Ab0HaASa (ORCPT ); Mon, 30 Aug 2010 20:18:30 -0400 X-IronPort-AV: E=McAfee;i="5400,1158,6090"; a="52801943" From: Gregory Bean To: dwalker@codeaurora.org Cc: linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, =?UTF-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= , Gregory Bean Subject: [PATCH 1/2] msm: Install the Google-Android gpio driver. Date: Mon, 30 Aug 2010 17:18:25 -0700 Message-Id: <1283213906-17671-1-git-send-email-gbean@codeaurora.org> X-Mailer: git-send-email 1.7.0.4 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 30419 Lines: 954 From: Arve Hjønnevåg 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 Signed-off-by: Gregory Bean --- 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 +#include +#include +#include +#include +#include +#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 + * 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 + +/* 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 -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/