From: Charulatha V <[email protected]> gpio_bank_count is the count of number of GPIO devices in a SoC. Remove this dependency from the driver. Also remove the dependency on array of pointers to gpio_bank struct of all GPIO devices.
The cpu_is*() checks used in omap2_gpio_prepare_for_idle() and omap2_gpio_resume_after_idle() would be removed in one of the patches in this series Signed-off-by: Charulatha V <[email protected]> Cc: Santosh Shilimkar <[email protected]> Cc: Kevin Hilman <[email protected]> Cc: Tony Lindgren <[email protected]> --- arch/arm/mach-omap1/gpio15xx.c | 1 - arch/arm/mach-omap1/gpio16xx.c | 2 - arch/arm/mach-omap1/gpio7xx.c | 2 - arch/arm/mach-omap2/gpio.c | 1 - arch/arm/plat-omap/gpio.c | 157 ++++++++++++++++--------------- arch/arm/plat-omap/include/plat/gpio.h | 3 - 6 files changed, 81 insertions(+), 85 deletions(-) diff --git a/arch/arm/mach-omap1/gpio15xx.c b/arch/arm/mach-omap1/gpio15xx.c index c3caf25..7a15f69 100644 --- a/arch/arm/mach-omap1/gpio15xx.c +++ b/arch/arm/mach-omap1/gpio15xx.c @@ -117,7 +117,6 @@ static int __init omap15xx_gpio_init(void) platform_device_register(&omap15xx_mpu_gpio); platform_device_register(&omap15xx_gpio); - gpio_bank_count = 2; return 0; } postcore_initcall(omap15xx_gpio_init); diff --git a/arch/arm/mach-omap1/gpio16xx.c b/arch/arm/mach-omap1/gpio16xx.c index f62eaf3..43718ec 100644 --- a/arch/arm/mach-omap1/gpio16xx.c +++ b/arch/arm/mach-omap1/gpio16xx.c @@ -223,8 +223,6 @@ static int __init omap16xx_gpio_init(void) for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++) platform_device_register(omap16xx_gpio_dev[i]); - gpio_bank_count = ARRAY_SIZE(omap16xx_gpio_dev); - return 0; } postcore_initcall(omap16xx_gpio_init); diff --git a/arch/arm/mach-omap1/gpio7xx.c b/arch/arm/mach-omap1/gpio7xx.c index 0fc2557..c7684ce 100644 --- a/arch/arm/mach-omap1/gpio7xx.c +++ b/arch/arm/mach-omap1/gpio7xx.c @@ -284,8 +284,6 @@ static int __init omap7xx_gpio_init(void) for (i = 0; i < ARRAY_SIZE(omap7xx_gpio_dev); i++) platform_device_register(omap7xx_gpio_dev[i]); - gpio_bank_count = ARRAY_SIZE(omap7xx_gpio_dev); - return 0; } postcore_initcall(omap7xx_gpio_init); diff --git a/arch/arm/mach-omap2/gpio.c b/arch/arm/mach-omap2/gpio.c index 6cd26b4..487b49a 100644 --- a/arch/arm/mach-omap2/gpio.c +++ b/arch/arm/mach-omap2/gpio.c @@ -143,7 +143,6 @@ static int omap2_gpio_dev_init(struct omap_hwmod *oh, void *unused) return PTR_ERR(od); } - gpio_bank_count++; return 0; } diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c index 12deb1c..0b76475 100644 --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -30,7 +30,10 @@ #include <mach/gpio.h> #include <asm/mach/irq.h> +static LIST_HEAD(omap_gpio_list); + struct gpio_bank { + struct list_head node; unsigned long pbase; void __iomem *base; u16 irq; @@ -57,6 +60,7 @@ struct gpio_bank { bool dbck_flag; int stride; u32 width; + u16 id; void (*set_dataout)(struct gpio_bank *bank, int gpio, int enable); @@ -80,15 +84,6 @@ struct omap3_gpio_regs { static struct omap3_gpio_regs gpio_context[OMAP34XX_NR_GPIOS]; #endif -/* - * TODO: Cleanup gpio_bank usage as it is having information - * related to all instances of the device - */ -static struct gpio_bank *gpio_bank; - -/* TODO: Analyze removing gpio_bank_count usage from driver code */ -int gpio_bank_count; - #define GPIO_INDEX(bank, gpio) (gpio % bank->width) #define GPIO_BIT(bank, gpio) (1 << GPIO_INDEX(bank, gpio)) #define GPIO_MOD_CTRL_BIT BIT(0) @@ -859,23 +854,29 @@ static struct platform_device omap_mpuio_device = { /* could list the /proc/iomem resources */ }; -static inline void mpuio_init(void) +static inline void mpuio_init(struct gpio_bank *bank) { - struct gpio_bank *bank = &gpio_bank[0]; + static int mpuio_init_done; + + if (mpuio_init_done || (bank->method != METHOD_MPUIO)) + return; + platform_set_drvdata(&omap_mpuio_device, bank); if (platform_driver_register(&omap_mpuio_driver) == 0) (void) platform_device_register(&omap_mpuio_device); + + mpuio_init_done = 1; } #else -static inline void mpuio_init(void) {} +static inline void mpuio_init(struct gpio_bank *bank) {} #endif /* 16xx */ #else #define bank_is_mpuio(bank) 0 -static inline void mpuio_init(void) {} +static inline void mpuio_init(struct gpio_bank *bank) {} #endif @@ -997,18 +998,6 @@ static void __init omap_gpio_show_rev(struct gpio_bank *bank) */ static struct lock_class_key gpio_lock_class; -static inline int init_gpio_info(struct platform_device *pdev) -{ - /* TODO: Analyze removing gpio_bank_count usage from driver code */ - gpio_bank = kzalloc(gpio_bank_count * sizeof(struct gpio_bank), - GFP_KERNEL); - if (!gpio_bank) { - dev_err(&pdev->dev, "Memory alloc failed for gpio_bank\n"); - return -ENOMEM; - } - return 0; -} - /* TODO: Cleanup cpu_is_* checks */ static void omap_gpio_mod_init(struct gpio_bank *bank) { @@ -1140,36 +1129,37 @@ static void __init omap_gpio_chip_init(struct gpio_bank *bank) static int __devinit omap_gpio_probe(struct platform_device *pdev) { - static int gpio_init_done; struct omap_gpio_platform_data *pdata; struct resource *res; - int id; struct gpio_bank *bank; + int ret = 0; - if (!pdev->dev.platform_data) - return -EINVAL; - - pdata = pdev->dev.platform_data; - - if (!gpio_init_done) { - int ret; - - ret = init_gpio_info(pdev); - if (ret) - return ret; + if (!pdev->dev.platform_data) { + ret = -EINVAL; + goto err_exit; } - id = pdev->id; - bank = &gpio_bank[id]; + bank = kzalloc(sizeof(struct gpio_bank), GFP_KERNEL); + if (!bank) { + dev_err(&pdev->dev, "Memory alloc failed for gpio_bank\n"); + ret = -ENOMEM; + goto err_exit; + } res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (unlikely(!res)) { - dev_err(&pdev->dev, "GPIO Bank %i Invalid IRQ resource\n", id); - return -ENODEV; + dev_err(&pdev->dev, "GPIO Bank %i Invalid IRQ resource\n", + pdev->id); + ret = -ENODEV; + goto err_free; } bank->irq = res->start; + bank->id = pdev->id; + + pdata = pdev->dev.platform_data; bank->virtual_irq_start = pdata->virtual_irq_start; + bank->method = pdata->bank_type; bank->dev = &pdev->dev; bank->dbck_flag = pdata->dbck_flag; @@ -1189,39 +1179,47 @@ static int __devinit omap_gpio_probe(struct platform_device *pdev) /* Static mapping, never released */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (unlikely(!res)) { - dev_err(&pdev->dev, "GPIO Bank %i Invalid mem resource\n", id); - return -ENODEV; + dev_err(&pdev->dev, "GPIO Bank %i Invalid mem resource\n", + pdev->id); + ret = -ENODEV; + goto err_free; } bank->base = ioremap(res->start, resource_size(res)); if (!bank->base) { - dev_err(&pdev->dev, "Could not ioremap gpio bank%i\n", id); - return -ENOMEM; + dev_err(&pdev->dev, "Could not ioremap gpio bank%i\n", + pdev->id); + ret = -ENOMEM; + goto err_free; } pm_runtime_enable(bank->dev); pm_runtime_get_sync(bank->dev); + mpuio_init(bank); omap_gpio_mod_init(bank); omap_gpio_chip_init(bank); omap_gpio_show_rev(bank); - if (!gpio_init_done) - gpio_init_done = 1; + list_add_tail(&bank->node, &omap_gpio_list); - return 0; + return ret; + +err_free: + kfree(bank); +err_exit: + return ret; } #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS) static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg) { - int i; + struct gpio_bank *bank; if (!cpu_class_is_omap2() && !cpu_is_omap16xx()) return 0; - for (i = 0; i < gpio_bank_count; i++) { - struct gpio_bank *bank = &gpio_bank[i]; + list_for_each_entry(bank, &omap_gpio_list, node) { void __iomem *wake_status; void __iomem *wake_clear; void __iomem *wake_set; @@ -1265,13 +1263,12 @@ static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg) static int omap_gpio_resume(struct sys_device *dev) { - int i; + struct gpio_bank *bank; if (!cpu_class_is_omap2() && !cpu_is_omap16xx()) return 0; - for (i = 0; i < gpio_bank_count; i++) { - struct gpio_bank *bank = &gpio_bank[i]; + list_for_each_entry(bank, &omap_gpio_list, node) { void __iomem *wake_clear; void __iomem *wake_set; unsigned long flags; @@ -1327,17 +1324,17 @@ static int workaround_enabled; void omap2_gpio_prepare_for_idle(int off_mode) { - int i, c = 0; - int min = 0; - - if (cpu_is_omap34xx()) - min = 1; + int c = 0; + struct gpio_bank *bank; - for (i = min; i < gpio_bank_count; i++) { - struct gpio_bank *bank = &gpio_bank[i]; + list_for_each_entry(bank, &omap_gpio_list, node) { u32 l1 = 0, l2 = 0; int j; + /* TODO: Do not use cpu_is_omap34xx */ + if ((cpu_is_omap34xx()) && (bank->id == 0)) + continue; + for (j = 0; j < hweight_long(bank->dbck_enable_mask); j++) clk_disable(bank->dbck); @@ -1396,16 +1393,16 @@ void omap2_gpio_prepare_for_idle(int off_mode) void omap2_gpio_resume_after_idle(void) { - int i; - int min = 0; + struct gpio_bank *bank; - if (cpu_is_omap34xx()) - min = 1; - for (i = min; i < gpio_bank_count; i++) { - struct gpio_bank *bank = &gpio_bank[i]; + list_for_each_entry(bank, &omap_gpio_list, node) { u32 l = 0, gen, gen0, gen1; int j; + /* TODO: Do not use cpu_is_omap34xx */ + if ((cpu_is_omap34xx()) && (bank->id == 0)) + continue; + for (j = 0; j < hweight_long(bank->dbck_enable_mask); j++) clk_enable(bank->dbck); @@ -1497,11 +1494,16 @@ void omap2_gpio_resume_after_idle(void) /* save the registers of bank 2-6 */ void omap_gpio_save_context(void) { - int i; + struct gpio_bank *bank; + int i = 0; /* saving banks from 2-6 only since GPIO1 is in WKUP */ - for (i = 1; i < gpio_bank_count; i++) { - struct gpio_bank *bank = &gpio_bank[i]; + list_for_each_entry(bank, &omap_gpio_list, node) { + i++; + + if (bank->id == 0) + continue; + gpio_context[i].irqenable1 = __raw_readl(bank->base + OMAP24XX_GPIO_IRQENABLE1); gpio_context[i].irqenable2 = @@ -1528,10 +1530,15 @@ void omap_gpio_save_context(void) /* restore the required registers of bank 2-6 */ void omap_gpio_restore_context(void) { - int i; + struct gpio_bank *bank; + int i = 0; + + list_for_each_entry(bank, &omap_gpio_list, node) { + i++; + + if (bank->id == 0) + continue; - for (i = 1; i < gpio_bank_count; i++) { - struct gpio_bank *bank = &gpio_bank[i]; __raw_writel(gpio_context[i].irqenable1, bank->base + OMAP24XX_GPIO_IRQENABLE1); __raw_writel(gpio_context[i].irqenable2, @@ -1578,8 +1585,6 @@ static int __init omap_gpio_sysinit(void) { int ret = 0; - mpuio_init(); - #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS) if (cpu_is_omap16xx() || cpu_class_is_omap2()) { if (ret == 0) { diff --git a/arch/arm/plat-omap/include/plat/gpio.h b/arch/arm/plat-omap/include/plat/gpio.h index 8014a8a..ad9e668 100644 --- a/arch/arm/plat-omap/include/plat/gpio.h +++ b/arch/arm/plat-omap/include/plat/gpio.h @@ -204,9 +204,6 @@ struct omap_gpio_platform_data { struct omap_gpio_reg_offs *regs; }; -/* TODO: Analyze removing gpio_bank_count usage from driver code */ -extern int gpio_bank_count; - extern void omap2_gpio_prepare_for_idle(int off_mode); extern void omap2_gpio_resume_after_idle(void); extern void omap_set_gpio_debounce(int gpio, int enable); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
