Re: [PATCH v4 1/2] mfd: add irq domain support for max8997 interrupts
From: MyungJoo Ham <myungjoo.ham@samsung.com>
Date: 2012-03-26 12:20:49
Also in:
linux-arm-kernel, linux-samsung-soc, lkml
On Sat, Mar 24, 2012 at 6:49 PM, Thomas Abraham [off-list ref] wrote:
Add irq domain support for max8997 interrupts. The reverse mapping method used is linear mapping since the sub-drivers of max8997 such as regulator and charger drivers can use the max8997 irq_domain to get the linux irq number for max8997 interrupts. All uses of irq_base in platform data and max8997 driver private data are removed. Cc: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Thomas Abraham <redacted> Acked-by: Grant Likely <redacted>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
quoted hunk ↗ jump to hunk
--- arch/arm/mach-exynos/mach-nuri.c | 4 -- arch/arm/mach-exynos/mach-origen.c | 1 - drivers/mfd/max8997-irq.c | 61 ++++++++++++++++++++-------------- drivers/mfd/max8997.c | 1 - include/linux/mfd/max8997-private.h | 4 ++- include/linux/mfd/max8997.h | 1 - 6 files changed, 39 insertions(+), 33 deletions(-)diff --git a/arch/arm/mach-exynos/mach-nuri.c b/arch/arm/mach-exynos/mach-nuri.c index 7ac81ce..b21d85d 100644 --- a/arch/arm/mach-exynos/mach-nuri.c +++ b/arch/arm/mach-exynos/mach-nuri.c@@ -1077,12 +1077,8 @@ static struct platform_device nuri_max8903_device = {static void __init nuri_power_init(void) { int gpio; - int irq_base = IRQ_GPIO_END + 1; int ta_en = 0; - nuri_max8997_pdata.irq_base = irq_base; - irq_base += MAX8997_IRQ_NR; - gpio = EXYNOS4_GPX0(7); gpio_request(gpio, "AP_PMIC_IRQ"); s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(0xf));diff --git a/arch/arm/mach-exynos/mach-origen.c b/arch/arm/mach-exynos/mach-origen.c index 827cb99..d3b2e9d 100644 --- a/arch/arm/mach-exynos/mach-origen.c +++ b/arch/arm/mach-exynos/mach-origen.c@@ -424,7 +424,6 @@ static struct max8997_platform_data __initdata origen_max8997_pdata = {.buck1_gpiodvs = false, .buck2_gpiodvs = false, .buck5_gpiodvs = false, - .irq_base = IRQ_GPIO_END + 1, .ignore_gpiodvs_side_effect = true, .buck125_default_idx = 0x0,diff --git a/drivers/mfd/max8997-irq.c b/drivers/mfd/max8997-irq.c index 09274cf..00390a1 100644 --- a/drivers/mfd/max8997-irq.c +++ b/drivers/mfd/max8997-irq.c@@ -142,7 +142,8 @@ static void max8997_irq_sync_unlock(struct irq_data *data)static const inline struct max8997_irq_data * irq_to_max8997_irq(struct max8997_dev *max8997, int irq) { - return &max8997_irqs[irq - max8997->irq_base]; + struct irq_data *data = irq_get_irq_data(irq); + return &max8997_irqs[data->hwirq]; } static void max8997_irq_mask(struct irq_data *data)@@ -182,7 +183,7 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)u8 irq_reg[MAX8997_IRQ_GROUP_NR] = {}; u8 irq_src; int ret; - int i; + int i, cur_irq; ret = max8997_read_reg(max8997->i2c, MAX8997_REG_INTSRC, &irq_src); if (ret < 0) {@@ -269,8 +270,11 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)/* Report */ for (i = 0; i < MAX8997_IRQ_NR; i++) { - if (irq_reg[max8997_irqs[i].group] & max8997_irqs[i].mask) - handle_nested_irq(max8997->irq_base + i); + if (irq_reg[max8997_irqs[i].group] & max8997_irqs[i].mask) { + cur_irq = irq_find_mapping(max8997->irq_domain, i); + if (cur_irq) + handle_nested_irq(cur_irq); + } } return IRQ_HANDLED;@@ -278,26 +282,40 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)int max8997_irq_resume(struct max8997_dev *max8997) { - if (max8997->irq && max8997->irq_base) - max8997_irq_thread(max8997->irq_base, max8997); + if (max8997->irq && max8997->irq_domain) + max8997_irq_thread(0, max8997); + return 0; +} + +static int max8997_irq_domain_map(struct irq_domain *d, unsigned int irq, + irq_hw_number_t hw) +{ + struct max8997_dev *max8997 = d->host_data; + + irq_set_chip_data(irq, max8997); + irq_set_chip_and_handler(irq, &max8997_irq_chip, handle_edge_irq); + irq_set_nested_thread(irq, 1); +#ifdef CONFIG_ARM + set_irq_flags(irq, IRQF_VALID); +#else + irq_set_noprobe(irq); +#endif return 0; } +static struct irq_domain_ops max8997_irq_domain_ops = { + .map = max8997_irq_domain_map, +}; + int max8997_irq_init(struct max8997_dev *max8997) { + struct irq_domain *domain; int i; - int cur_irq; int ret; u8 val; if (!max8997->irq) { dev_warn(max8997->dev, "No interrupt specified.\n"); - max8997->irq_base = 0; - return 0; - } - - if (!max8997->irq_base) { - dev_err(max8997->dev, "No interrupt base specified.\n"); return 0; }@@ -327,18 +345,11 @@ int max8997_irq_init(struct max8997_dev *max8997)true : false; } - /* Register with genirq */ - for (i = 0; i < MAX8997_IRQ_NR; i++) { - cur_irq = i + max8997->irq_base; - irq_set_chip_data(cur_irq, max8997); - irq_set_chip_and_handler(cur_irq, &max8997_irq_chip, - handle_edge_irq); - irq_set_nested_thread(cur_irq, 1); -#ifdef CONFIG_ARM - set_irq_flags(cur_irq, IRQF_VALID); -#else - irq_set_noprobe(cur_irq); -#endif + domain = irq_domain_add_linear(NULL, MAX8997_IRQ_NR, + &max8997_irq_domain_ops, &max8997); + if (!domain) { + dev_err(max8997->dev, "could not create irq domain\n"); + return -ENODEV; } ret = request_threaded_irq(max8997->irq, NULL, max8997_irq_thread,diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c index cb83a7a..20ecad3 100644 --- a/drivers/mfd/max8997.c +++ b/drivers/mfd/max8997.c@@ -143,7 +143,6 @@ static int max8997_i2c_probe(struct i2c_client *i2c,if (!pdata) goto err; - max8997->irq_base = pdata->irq_base; max8997->ono = pdata->ono; mutex_init(&max8997->iolock);diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h index 3f4deb6..830152c 100644 --- a/include/linux/mfd/max8997-private.h +++ b/include/linux/mfd/max8997-private.h@@ -23,6 +23,8 @@#define __LINUX_MFD_MAX8997_PRIV_H #include <linux/i2c.h> +#include <linux/export.h> +#include <linux/irqdomain.h> #define MAX8997_REG_INVALID (0xff)@@ -325,7 +327,7 @@ struct max8997_dev {int irq; int ono; - int irq_base; + struct irq_domain *irq_domain; struct mutex irqlock; int irq_masks_cur[MAX8997_IRQ_GROUP_NR]; int irq_masks_cache[MAX8997_IRQ_GROUP_NR];diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h index fff5905..818486c 100644 --- a/include/linux/mfd/max8997.h +++ b/include/linux/mfd/max8997.h@@ -155,7 +155,6 @@ struct max8997_led_platform_data {struct max8997_platform_data { /* IRQ */ - int irq_base; int ono; int wakeup; -- 1.6.6.rc2 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
-- MyungJoo Ham, Ph.D. Mobile Software Platform Lab, DMC Business, Samsung Electronics