From patchwork Tue Mar 3 10:37:28 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: kim kyuwon X-Patchwork-Id: 9679 X-Patchwork-Delegate: khilman@deeprootsystems.com Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n23AbCwa021321 for ; Tue, 3 Mar 2009 10:37:32 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751263AbZCCKhd (ORCPT ); Tue, 3 Mar 2009 05:37:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752827AbZCCKhd (ORCPT ); Tue, 3 Mar 2009 05:37:33 -0500 Received: from mail-fx0-f176.google.com ([209.85.220.176]:48750 "EHLO mail-fx0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751263AbZCCKhb (ORCPT ); Tue, 3 Mar 2009 05:37:31 -0500 Received: by fxm24 with SMTP id 24so2370114fxm.37 for ; Tue, 03 Mar 2009 02:37:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:cc:content-type:content-transfer-encoding; bh=Uqubpz8fOYqUKMB1JS+giMOqATcAidp7a6hW3VG4J6Y=; b=uFB1gGWS3KVj6vSjTn0pYQYZlh4NiH3XMLCn3ccVo7TmO2NEHLAPHof+LP80L3zFE7 VMV88LHNH4qAK1l6u1ERc+UnxMtB+sL0gi/y0+oOlrOCpVZdO8rMXpjcGhtkHYh++T/w l/TL88Wdkvnnccogy7f/DggyTtids0LOfFfSI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=DXiW07nLF3JpRpBWZ62anj8QiL0oc/P6o+wN114rGG2cmDDMv2WSfi4wNulVYh63go LLnwGMmC+G6sVlhGzhnrkZVDvYeTkv9tKB/N1LjW74bBlp7UwbPHyD2fD8SNgNrcd7RS EaHbx3EImfNb72Q8KmIui7gNlBqRzASltKly0= MIME-Version: 1.0 Received: by 10.223.115.193 with SMTP id j1mr6890820faq.98.1236076648102; Tue, 03 Mar 2009 02:37:28 -0800 (PST) Date: Tue, 3 Mar 2009 19:37:28 +0900 Message-ID: <4d34a0a70903030237i6e43461ei986266cdfb72b416@mail.gmail.com> Subject: [PATCH 1/1] OMAP3: PM: Add the wakeup source driver From: Kim Kyuwon To: OMAP Cc: Tony Lindgren , Kevin Hilman , =?EUC-KR?B?udqw5rnO?= Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Sometimes, it is necessary to find out "what does wake up my board?". Notifying wake-up source feature may be used to blame unexpected wake-up events which increase power consumption. And user mode applications can act smartly according to the wake-up event to minimize power consumption. This driver uses sysfs interface to give information to user mode applications like: cat /sys/power/wakeup_irq cat /sys/power/wakeup_event This driver also privides the unified GPIO wake-up source configuration. specific GPIO settings in the board files are: /* Wakeup source configuration */ static struct gpio_wake boardname_gpio_wake[] = { { 23, IRQF_TRIGGER_RISING | IRQF_SHARED, "BT_WAKEUP", 1}, { 24, IRQF_TRIGGER_RISING | IRQF_SHARED, "USB_DETECT", 1}, }; static struct omap_wake_platform_data boardname_wake_data = { .qpio_wakes = boardname_gpio_wake, .gpio_wake_num = ARRAY_SIZE(boardname_gpio_wake), }; static struct platform_device boardname_wakeup = { .name = "omap-wake", .id = -1, .dev = { .platform_data = &boardname_wake_data, }, }; Signed-off-by: Kim Kyuwon --- arch/arm/mach-omap2/Makefile | 1 + arch/arm/mach-omap2/irq.c | 41 +++ arch/arm/mach-omap2/prcm-common.h | 4 + arch/arm/mach-omap2/prm-regbits-34xx.h | 6 + arch/arm/mach-omap2/wake34xx.c | 470 ++++++++++++++++++++++++++++++++ arch/arm/plat-omap/Kconfig | 9 + arch/arm/plat-omap/include/mach/irqs.h | 1 + arch/arm/plat-omap/include/mach/wake.h | 29 ++ 8 files changed, 561 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-omap2/wake34xx.c create mode 100644 arch/arm/plat-omap/include/mach/wake.h diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index ba65cab..1ab87e7 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_ARCH_OMAP2) += pm24xx.o obj-$(CONFIG_ARCH_OMAP24XX) += sleep24xx.o obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o obj-$(CONFIG_PM_DEBUG) += pm-debug.o +obj-$(CONFIG_OMAP_WAKE) += wake34xx.o endif # SmartReflex driver diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c index 2842fe8..21f3d83 100644 --- a/arch/arm/mach-omap2/irq.c +++ b/arch/arm/mach-omap2/irq.c @@ -177,6 +177,47 @@ int omap_irq_pending(void) return 0; } +/* + * Get the first pending MPU IRQ number from 'irq_start'. + * If none, return -1. + */ +int omap_get_pending_mpu_irq(unsigned int irq_start) +{ + struct omap_irq_bank *bank = irq_banks; + int irq, bits_skip, bit_start; + + if (irq_start >= bank->nr_irqs) + return -1; + + bits_skip = irq_start % IRQ_BITS_PER_REG; + bit_start = irq_start - bits_skip; + + for (irq = bit_start; irq < bank->nr_irqs; irq += IRQ_BITS_PER_REG) { + int ret, i, limit, offset = irq & (~(IRQ_BITS_PER_REG - 1)); + + ret = intc_bank_read_reg(bank, (INTC_PENDING_IRQ0 + offset)); + if (!ret) + continue; + + limit = IRQ_BITS_PER_REG; + + if (bit_start == irq) { + ret >>= bits_skip; + limit -= bits_skip; + } else + bits_skip = 0; + + for (i = 0; i < limit; i++) { + if (ret & 0x1) + return irq + i + bits_skip; + else + ret >>= 1; + } + } + + return -1; +} + void __init omap_init_irq(void) { unsigned long nr_of_irqs = 0; diff --git a/arch/arm/mach-omap2/prcm-common.h b/arch/arm/mach-omap2/prcm-common.h index cb1ae84..1f340aa 100644 --- a/arch/arm/mach-omap2/prcm-common.h +++ b/arch/arm/mach-omap2/prcm-common.h @@ -273,6 +273,10 @@ #define OMAP3430_ST_D2D_SHIFT 3 #define OMAP3430_ST_D2D_MASK (1 << 3) +/* PM_WKST3_CORE, CM_IDLEST3_CORE shared bits */ +#define OMAP3430_ST_USBTLL_SHIFT 2 +#define OMAP3430_ST_USBTLL_MASK (1 << 2) + /* CM_FCLKEN_WKUP, CM_ICLKEN_WKUP, PM_WKEN_WKUP shared bits */ #define OMAP3430_EN_GPIO1 (1 << 3) #define OMAP3430_EN_GPIO1_SHIFT 3 diff --git a/arch/arm/mach-omap2/prm-regbits-34xx.h b/arch/arm/mach-omap2/prm-regbits-34xx.h index d73eee8..661d37d 100644 --- a/arch/arm/mach-omap2/prm-regbits-34xx.h +++ b/arch/arm/mach-omap2/prm-regbits-34xx.h @@ -332,6 +332,8 @@ /* PM_IVA2GRPSEL1_CORE specific bits */ /* PM_WKST1_CORE specific bits */ +#define OMAP3430_ST_MMC3_SHIFT 30 +#define OMAP3430_ST_MMC3_MASK (1 << 30) /* PM_PWSTCTRL_CORE specific bits */ #define OMAP3430_MEM2ONSTATE_SHIFT 18 @@ -373,6 +375,7 @@ /* PM_IVA2GRPSEL_WKUP specific bits */ /* PM_WKST_WKUP specific bits */ +#define OMAP3430_ST_IO_CHAIN (1 << 16) #define OMAP3430_ST_IO (1 << 8) /* PRM_CLKSEL */ @@ -430,6 +433,9 @@ /* PM_PREPWSTST_PER specific bits */ +/* PM_WKST_USBHOST specific bits */ +#define OMAP3430_ST_USBHOST (1 << 0) + /* RM_RSTST_EMU specific bits */ /* PM_PWSTST_EMU specific bits */ diff --git a/arch/arm/mach-omap2/wake34xx.c b/arch/arm/mach-omap2/wake34xx.c new file mode 100644 index 0000000..2390bca --- /dev/null +++ b/arch/arm/mach-omap2/wake34xx.c @@ -0,0 +1,466 @@ +/* + * wake34xx.c + * + * Copyright (c) 2009 Samsung Eletronics + * + * Author: Kim Kyuwon + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include +#include +#include +#include + +#include +#include + +#include "prm-regbits-34xx.h" + +/* + * Sometimes, it is necessary to find out "what does wake up my board?" + * Notifying wake-up source feature may be used to blame unexpected wake-up + * events which increase power consumption. And user mode applications can + * act smartly according to the wake-up event to minimize power consumption. + * This driver uses sysfs interface to give information to user mode + * applications. + */ + +#define WAKE_STR_LEN 64 + +char wakeup_irq[WAKE_STR_LEN] = "None"; +char wakeup_event[WAKE_STR_LEN] = "None"; + +struct wake_event { + int index; + const char *name; +}; + +static struct wake_event omap3_wkup_events[] = { + { OMAP3430_ST_IO_CHAIN, "ST_IO" }, + { OMAP3430_ST_IO, "ST_SR2" }, + { OMAP3430_ST_SR2_MASK, "ST_SR2" }, + { OMAP3430_ST_SR1_MASK, "ST_SR1" }, + { OMAP3430_ST_GPIO1_MASK, "ST_GPIO1" }, + { OMAP3430_ST_GPT12_MASK, "ST_GPT12" }, + { OMAP3430_ST_GPT1_MASK, "ST_GPT1" }, +}; + +static struct wake_event omap3_per_events[] = { + { OMAP3430_ST_GPIO6_MASK, "ST_GPIO6" }, + { OMAP3430_ST_GPIO5_MASK, "ST_GPIO5" }, + { OMAP3430_ST_GPIO4_MASK, "ST_GPIO4" }, + { OMAP3430_ST_GPIO3_MASK, "ST_GPIO3" }, + { OMAP3430_ST_GPIO2_MASK, "ST_GPIO2" }, + { OMAP3430_ST_UART3_MASK, "ST_UART3" }, + { OMAP3430_ST_GPT9_MASK, "ST_GPT9" }, + { OMAP3430_ST_GPT8_MASK, "ST_GPT8" }, + { OMAP3430_ST_GPT7_MASK, "ST_GPT7" }, + { OMAP3430_ST_GPT6_MASK, "ST_GPT6" }, + { OMAP3430_ST_GPT5_MASK, "ST_GPT5" }, + { OMAP3430_ST_GPT4_MASK, "ST_GPT4" }, + { OMAP3430_ST_GPT3_MASK, "ST_GPT3" }, + { OMAP3430_ST_GPT2_MASK, "ST_GPT2" }, + { OMAP3430_EN_MCBSP4, "EN_MCBSP4" }, + { OMAP3430_EN_MCBSP3, "EN_MCBSP3" }, + { OMAP3430_EN_MCBSP2, "EN_MCBSP2" }, +}; + +static struct wake_event omap3_core1_events[] = { + { OMAP3430_ST_MMC3_MASK, "ST_MMC3" }, + { OMAP3430_ST_MMC2_MASK, "ST_MMC2" }, + { OMAP3430_ST_MMC1_MASK, "ST_MMC1" }, + { OMAP3430_ST_MCSPI4_MASK, "ST_MCSPI4" }, + { OMAP3430_ST_MCSPI3_MASK, "ST_MCSPI3" }, + { OMAP3430_ST_MCSPI2_MASK, "ST_MCSPI2" }, + { OMAP3430_ST_MCSPI1_MASK, "ST_MCSPI1" }, + { OMAP3430_ST_I2C3_MASK, "ST_I2C3" }, + { OMAP3430_ST_I2C2_MASK, "ST_I2C2" }, + { OMAP3430_ST_I2C1_MASK, "ST_I2C1" }, + { OMAP3430_ST_UART1_MASK, "ST_UART1" }, + { OMAP3430_ST_GPT11_MASK, "ST_GPT11" }, + { OMAP3430_ST_GPT10_MASK, "ST_GPT10" }, + { OMAP3430_ST_MCBSP5_MASK, "ST_MCBSP5" }, + { OMAP3430_ST_MCBSP1_MASK, "ST_MCBSP1" }, +}; + +static struct wake_event omap3es1_core1_events[] = { + { OMAP3430ES1_ST_FSHOSTUSB_MASK, "ST_FSHOSTUSB" }, + { OMAP3430ES1_ST_HSOTGUSB_MASK, "ST_HSOTGUSB" }, + { OMAP3430_ST_D2D_MASK, "ST_D2D" }, +}; + +static struct wake_event omap3es2_core1_events[] = { + { OMAP3430ES2_ST_HSOTGUSB_STDBY_MASK, "ST_HSOTGUSB" }, +}; + +static struct wake_event omap3_core2_events[] = { + { OMAP3430_ST_USBTLL_MASK, "ST_USBTLL" }, +}; + +static struct wake_event omap3_usbhost_events[] = { + { OMAP3430_ST_USBHOST, "ST_USBHOST" }, +}; + +static ssize_t wakeup_source_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf); + +static void omap_wake_update_event(char *event) +{ + int len; + + if (wakeup_event[0]) + len = strlen(wakeup_event) + strlen(event) + 2; + else + len = strlen(wakeup_event) + strlen(event); + + if (len > WAKE_STR_LEN - 1) { + printk(KERN_ERR "Can't record the wakeup event: %s\n", event); + return; + } + + if (wakeup_event[0]) + strcat(wakeup_event, ", "); + strcat(wakeup_event, event); +} + +static void omap_wake_detect_wkup(u32 wkst, char *event) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(omap3_wkup_events); i++) + if (wkst & omap3_wkup_events[i].index) { + sprintf(event, "%s", + omap3_wkup_events[i].name); + return; + } + + sprintf(event, "WKUP:0x%08x", wkst); +} + +static void omap_wake_detect_per(u32 wkst, char *event) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(omap3_per_events); i++) + if (wkst & omap3_per_events[i].index) { + sprintf(event, "%s", + omap3_per_events[i].name); + return; + } + + sprintf(event, "PER:0x%08x", wkst); +} + +static void omap_wake_detect_core1(u32 wkst, char *event) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(omap3_core1_events); i++) + if (wkst & omap3_core1_events[i].index) { + sprintf(event, "%s", + omap3_core1_events[i].name); + return; + } + + if (omap_rev() == OMAP3430_REV_ES1_0) { + for (i = 0; i < ARRAY_SIZE(omap3es1_core1_events); i++) { + if (wkst & omap3es1_core1_events[i].index) { + sprintf(event, "%s", + omap3es1_core1_events[i].name); + return; + } + } + } else { + for (i = 0; i < ARRAY_SIZE(omap3es2_core1_events); i++) { + if (wkst & omap3es2_core1_events[i].index) { + sprintf(event, "%s", + omap3es2_core1_events[i].name); + return; + } + } + } + + sprintf(event, "CORE1:0x%08x", wkst); +} + +static void omap_wake_detect_core2(u32 wkst, char *event) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(omap3_core2_events); i++) + if (wkst & omap3_core2_events[i].index) { + sprintf(event, "%s", + omap3_core2_events[i].name); + return; + } + + sprintf(event, "CORE2:0x%08x", wkst); +} + +static void omap_wake_detect_usbhost(u32 wkst, char *event) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(omap3_usbhost_events); i++) + if (wkst & omap3_usbhost_events[i].index) { + sprintf(event, "%s", + omap3_usbhost_events[i].name); + return; + } + + sprintf(event, "USBHOST:0x%08x", wkst); +} + +/* Detect wake-up events */ +static void omap_wake_detect_wakeup(void) +{ + u32 wkst; + char buf[32] = {0, }; + int irq, len; + + /* Initialize global string variables */ + memset(wakeup_irq, 0x0, WAKE_STR_LEN); + memset(wakeup_event, 0x0, WAKE_STR_LEN); + + /* IRQ */ + irq = omap_get_pending_mpu_irq(0); + while (irq >= 0) { + if (irq == INT_34XX_SYS_NIRQ) + omap_wake_update_event("sys_nirq"); + + len = strlen(wakeup_irq) + sprintf(buf, "%d", irq); + if (len > WAKE_STR_LEN - 1) + break; + + strcat(wakeup_irq, buf); + + irq = omap_get_pending_mpu_irq(irq + 1); + if (irq >= 0) { + len = strlen(wakeup_irq) + 2; + if (len > WAKE_STR_LEN - 1) + break; + + strcat(wakeup_irq, ", "); + } + } + if (!wakeup_irq[0]) + strncpy(wakeup_irq, "Unknown", WAKE_STR_LEN - 1); + printk(KERN_INFO "Wake-up IRQ: %s\n", wakeup_irq); + + /* WKUP */ + wkst = prm_read_mod_reg(WKUP_MOD, PM_WKST); + if (wkst) { + omap_wake_detect_wkup(wkst, buf); + omap_wake_update_event(buf); + } + + /* PER */ + wkst = prm_read_mod_reg(OMAP3430_PER_MOD, PM_WKST); + if (wkst) { + omap_wake_detect_per(wkst, buf); + omap_wake_update_event(buf); + } + + /* CORE */ + wkst = prm_read_mod_reg(CORE_MOD, PM_WKST1); + if (wkst) { + omap_wake_detect_core1(wkst, buf); + omap_wake_update_event(buf); + } + wkst = prm_read_mod_reg(CORE_MOD, OMAP3430ES2_PM_WKST3); + if (wkst) { + omap_wake_detect_core2(wkst, buf); + omap_wake_update_event(buf); + } + + /* USBHOST */ + wkst = prm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, PM_WKST); + if (wkst) { + omap_wake_detect_usbhost(wkst, buf); + omap_wake_update_event(buf); + } + + if (!wakeup_event[0]) + strncpy(wakeup_event, "Unknown", WAKE_STR_LEN - 1); +} + +static struct kobj_attribute wakeup_irq_attr = + __ATTR(wakeup_irq, 0644, wakeup_source_show, NULL); + +static struct kobj_attribute wakeup_event_attr = + __ATTR(wakeup_event, 0644, wakeup_source_show, NULL); + +static ssize_t wakeup_source_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + if (attr == &wakeup_irq_attr) + return sprintf(buf, "%s\n", wakeup_irq); + else if (attr == &wakeup_event_attr) + return sprintf(buf, "%s\n", wakeup_event); + else + return -EINVAL; +} + +static irqreturn_t omap_wake_detect_gpio(int irq, void *dev_id) +{ + if (!strncmp(wakeup_event, "Unknown", WAKE_STR_LEN - 1)) + strncpy(wakeup_event, dev_id, WAKE_STR_LEN - 1); + else + omap_wake_update_event(dev_id); + + return IRQ_HANDLED; +} + +static int __devinit omap_wake_probe(struct platform_device *pdev) +{ + struct omap_wake_platform_data *pdata = pdev->dev.platform_data; + struct gpio_wake *gw; + int i, ret; + + /* + * It may be good to configure GPIO wake-up sources in each driver. + * Buf if the specific device driver doesn't exist, you can use + * omap-wake driver to configure gpio wake-up sources. + */ + for (i = 0; i < pdata->gpio_wake_num; i++) { + gw = pdata->qpio_wakes + i; + + if (gw->request) { + ret = gpio_request(gw->gpio, gw->name); + if (ret) { + dev_err(&pdev->dev, "can't request gpio%d" + ", return %d\n", gw->gpio, ret); + goto failed_free_gpio; + } + } + gpio_direction_input(gw->gpio); + enable_irq_wake(gpio_to_irq(gw->gpio)); + } + + ret = sysfs_create_file(power_kobj, &wakeup_irq_attr.attr); + if (ret) + dev_err(&pdev->dev, "sysfs_create_file %s failed: %d\n", + wakeup_irq_attr.attr.name, ret); + + ret = sysfs_create_file(power_kobj, &wakeup_event_attr.attr); + if (ret) + dev_err(&pdev->dev, "sysfs_create_file %s failed: %d\n", + wakeup_event_attr.attr.name, ret); + + return 0; + +failed_free_gpio: + for (i--; i >= 0; i--) { + gw = pdata->qpio_wakes + i; + + if (gw->request) + gpio_free(gw->gpio); + } + + return ret; +} + +static int __devexit omap_wake_remove(struct platform_device *pdev) +{ + struct omap_wake_platform_data *pdata = pdev->dev.platform_data; + struct gpio_wake *gw; + int i; + + for (i = 0; i < pdata->gpio_wake_num; i++) { + gw = pdata->qpio_wakes + i; + + if (gw->request) + gpio_free(gw->gpio); + + disable_irq_wake(gpio_to_irq(gw->gpio)); + } + + return 0; +} + +static int omap_wake_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct omap_wake_platform_data *pdata = pdev->dev.platform_data; + struct gpio_wake *gw; + int i, ret; + + for (i = 0; i < pdata->gpio_wake_num; i++) { + gw = pdata->qpio_wakes + i; + + ret = request_irq(gpio_to_irq(gw->gpio), omap_wake_detect_gpio, + gw->irqflag, gw->name, (void *)gw->name); + if (ret) { + dev_err(&pdev->dev, "can't get IRQ%d, return %d\n", + gpio_to_irq(gw->gpio), ret); + goto failed_free_irq; + } + } + + return 0; + +failed_free_irq: + for (i--; i >= 0; i--) { + gw = pdata->qpio_wakes + i; + free_irq(gpio_to_irq(gw->gpio), (void *)gw->name); + } + + return ret; +} + +static int omap_wake_resume_early(struct platform_device *pdev) +{ + omap_wake_detect_wakeup(); + + return 0; +} + +static int omap_wake_resume(struct platform_device *pdev) +{ + struct omap_wake_platform_data *pdata = pdev->dev.platform_data; + struct gpio_wake *gw; + int i; + + for (i = 0; i < pdata->gpio_wake_num; i++) { + gw = pdata->qpio_wakes + i; + + free_irq(gpio_to_irq(gw->gpio), (void *)gw->name); + } + + printk(KERN_INFO "Wake-up event: %s\n", wakeup_event); + + return 0; +} + +static struct platform_driver omap_wake_driver = { + .probe = omap_wake_probe, + .remove = __devexit_p(omap_wake_remove), + .suspend = omap_wake_suspend, + .resume_early = omap_wake_resume_early, + .resume = omap_wake_resume, + .driver = { + .name = "omap-wake", + .owner = THIS_MODULE, + }, +}; + +static int __init omap_wake_init(void) +{ + return platform_driver_register(&omap_wake_driver); +} + +module_init(omap_wake_init); + +static void __exit omap_wake_exit(void) +{ + platform_driver_unregister(&omap_wake_driver); +} +module_exit(omap_wake_exit); + +MODULE_AUTHOR("Kim Kyuwon "); +MODULE_DESCRIPTION("OMAP34xx wakeup driver"); +MODULE_LICENSE("GPL v2"); diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig index 407bd32..7a73c95 100644 --- a/arch/arm/plat-omap/Kconfig +++ b/arch/arm/plat-omap/Kconfig @@ -176,6 +176,15 @@ config OMAP_MBOX_FWK Say Y here if you want to use OMAP Mailbox framework support for DSP, IVA1.0 and IVA2 in OMAP1/2/3. +config OMAP_WAKE + tristate "OMAP34xx wakeup source support" + depends on ARCH_OMAP34XX && PM + default n + help + Select this option if you want to know what kind of wake-up event + wakes up your board from the low power mode. And this option + provides the unified GPIO wake-up source configuration. + choice prompt "System timer" default OMAP_MPU_TIMER diff --git a/arch/arm/plat-omap/include/mach/irqs.h b/arch/arm/plat-omap/include/mach/irqs.h index d12c39f..656cc04 100644 --- a/arch/arm/plat-omap/include/mach/irqs.h +++ b/arch/arm/plat-omap/include/mach/irqs.h @@ -385,6 +385,7 @@ #ifndef __ASSEMBLY__ extern void omap_init_irq(void); extern int omap_irq_pending(void); +extern int omap_get_pending_mpu_irq(unsigned int irq_start); #endif #include diff --git a/arch/arm/plat-omap/include/mach/wake.h b/arch/arm/plat-omap/include/mach/wake.h new file mode 100644 index 0000000..213b263 --- /dev/null +++ b/arch/arm/plat-omap/include/mach/wake.h @@ -0,0 +1,30 @@ +/* + * wake.h + * + * Copyright (c) 2009 Samsung Eletronics + * + * Author: Kim Kyuwon + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#ifndef _WAKE_H_ +#define _WAKE_H_ + +struct gpio_wake { + unsigned int gpio; + unsigned long irqflag; + const char *name; + int request; +}; + +struct omap_wake_platform_data{ + struct gpio_wake *qpio_wakes; + int gpio_wake_num; +}; + +#endif /* _WAKE_H_ */ +