X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Farm%2Fplat-omap%2Fgpio.c;h=ca3681a824ac6581d9bfb2c3fe27e0b74b28091a;hb=d08fa1a22e4b7240ac081ba57a67ce8e8cf94cc7;hp=1c85b4e536c2e005b25f2249113bec4e60d97a5c;hpb=5c23804a0941a111752fdacefe0bea2db1b4d93f;p=linux-2.6-omap-h63xx.git diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c index 1c85b4e536c..ca3681a824a 100644 --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -3,7 +3,7 @@ * * Support functions for OMAP GPIO * - * Copyright (C) 2003 Nokia Corporation + * Copyright (C) 2003-2005 Nokia Corporation * Written by Juha Yrjölä * * This program is free software; you can redistribute it and/or modify @@ -17,6 +17,9 @@ #include #include #include +#include +#include +#include #include #include @@ -29,7 +32,7 @@ /* * OMAP1510 GPIO registers */ -#define OMAP1510_GPIO_BASE 0xfffce000 +#define OMAP1510_GPIO_BASE (void __iomem *)0xfffce000 #define OMAP1510_GPIO_DATA_INPUT 0x00 #define OMAP1510_GPIO_DATA_OUTPUT 0x04 #define OMAP1510_GPIO_DIR_CONTROL 0x08 @@ -43,34 +46,37 @@ /* * OMAP1610 specific GPIO registers */ -#define OMAP1610_GPIO1_BASE 0xfffbe400 -#define OMAP1610_GPIO2_BASE 0xfffbec00 -#define OMAP1610_GPIO3_BASE 0xfffbb400 -#define OMAP1610_GPIO4_BASE 0xfffbbc00 +#define OMAP1610_GPIO1_BASE (void __iomem *)0xfffbe400 +#define OMAP1610_GPIO2_BASE (void __iomem *)0xfffbec00 +#define OMAP1610_GPIO3_BASE (void __iomem *)0xfffbb400 +#define OMAP1610_GPIO4_BASE (void __iomem *)0xfffbbc00 #define OMAP1610_GPIO_REVISION 0x0000 #define OMAP1610_GPIO_SYSCONFIG 0x0010 #define OMAP1610_GPIO_SYSSTATUS 0x0014 #define OMAP1610_GPIO_IRQSTATUS1 0x0018 #define OMAP1610_GPIO_IRQENABLE1 0x001c +#define OMAP1610_GPIO_WAKEUPENABLE 0x0028 #define OMAP1610_GPIO_DATAIN 0x002c #define OMAP1610_GPIO_DATAOUT 0x0030 #define OMAP1610_GPIO_DIRECTION 0x0034 #define OMAP1610_GPIO_EDGE_CTRL1 0x0038 #define OMAP1610_GPIO_EDGE_CTRL2 0x003c #define OMAP1610_GPIO_CLEAR_IRQENABLE1 0x009c +#define OMAP1610_GPIO_CLEAR_WAKEUPENA 0x00a8 #define OMAP1610_GPIO_CLEAR_DATAOUT 0x00b0 #define OMAP1610_GPIO_SET_IRQENABLE1 0x00dc +#define OMAP1610_GPIO_SET_WAKEUPENA 0x00e8 #define OMAP1610_GPIO_SET_DATAOUT 0x00f0 /* * OMAP730 specific GPIO registers */ -#define OMAP730_GPIO1_BASE 0xfffbc000 -#define OMAP730_GPIO2_BASE 0xfffbc800 -#define OMAP730_GPIO3_BASE 0xfffbd000 -#define OMAP730_GPIO4_BASE 0xfffbd800 -#define OMAP730_GPIO5_BASE 0xfffbe000 -#define OMAP730_GPIO6_BASE 0xfffbe800 +#define OMAP730_GPIO1_BASE (void __iomem *)0xfffbc000 +#define OMAP730_GPIO2_BASE (void __iomem *)0xfffbc800 +#define OMAP730_GPIO3_BASE (void __iomem *)0xfffbd000 +#define OMAP730_GPIO4_BASE (void __iomem *)0xfffbd800 +#define OMAP730_GPIO5_BASE (void __iomem *)0xfffbe000 +#define OMAP730_GPIO6_BASE (void __iomem *)0xfffbe800 #define OMAP730_GPIO_DATA_INPUT 0x00 #define OMAP730_GPIO_DATA_OUTPUT 0x04 #define OMAP730_GPIO_DIR_CONTROL 0x08 @@ -78,14 +84,43 @@ #define OMAP730_GPIO_INT_MASK 0x10 #define OMAP730_GPIO_INT_STATUS 0x14 +/* + * omap24xx specific GPIO registers + */ +#define OMAP24XX_GPIO1_BASE (void __iomem *)0x48018000 +#define OMAP24XX_GPIO2_BASE (void __iomem *)0x4801a000 +#define OMAP24XX_GPIO3_BASE (void __iomem *)0x4801c000 +#define OMAP24XX_GPIO4_BASE (void __iomem *)0x4801e000 +#define OMAP24XX_GPIO_REVISION 0x0000 +#define OMAP24XX_GPIO_SYSCONFIG 0x0010 +#define OMAP24XX_GPIO_SYSSTATUS 0x0014 +#define OMAP24XX_GPIO_IRQSTATUS1 0x0018 +#define OMAP24XX_GPIO_IRQENABLE1 0x001c +#define OMAP24XX_GPIO_CTRL 0x0030 +#define OMAP24XX_GPIO_OE 0x0034 +#define OMAP24XX_GPIO_DATAIN 0x0038 +#define OMAP24XX_GPIO_DATAOUT 0x003c +#define OMAP24XX_GPIO_LEVELDETECT0 0x0040 +#define OMAP24XX_GPIO_LEVELDETECT1 0x0044 +#define OMAP24XX_GPIO_RISINGDETECT 0x0048 +#define OMAP24XX_GPIO_FALLINGDETECT 0x004c +#define OMAP24XX_GPIO_CLEARIRQENABLE1 0x0060 +#define OMAP24XX_GPIO_SETIRQENABLE1 0x0064 +#define OMAP24XX_GPIO_CLEARWKUENA 0x0080 +#define OMAP24XX_GPIO_SETWKUENA 0x0084 +#define OMAP24XX_GPIO_CLEARDATAOUT 0x0090 +#define OMAP24XX_GPIO_SETDATAOUT 0x0094 + #define OMAP_MPUIO_MASK (~OMAP_MAX_GPIO_LINES & 0xff) struct gpio_bank { - u32 base; + void __iomem *base; u16 irq; u16 virtual_irq_start; - u8 method; + int method; u32 reserved_map; + u32 suspend_wakeup; + u32 saved_wakeup; spinlock_t lock; }; @@ -93,8 +128,9 @@ struct gpio_bank { #define METHOD_GPIO_1510 1 #define METHOD_GPIO_1610 2 #define METHOD_GPIO_730 3 +#define METHOD_GPIO_24XX 4 -#if defined(CONFIG_ARCH_OMAP16XX) +#ifdef CONFIG_ARCH_OMAP16XX static struct gpio_bank gpio_bank_1610[5] = { { OMAP_MPUIO_BASE, INT_MPUIO, IH_MPUIO_BASE, METHOD_MPUIO}, { OMAP1610_GPIO1_BASE, INT_GPIO_BANK1, IH_GPIO_BASE, METHOD_GPIO_1610 }, @@ -104,7 +140,7 @@ static struct gpio_bank gpio_bank_1610[5] = { }; #endif -#ifdef CONFIG_ARCH_OMAP1510 +#ifdef CONFIG_ARCH_OMAP15XX static struct gpio_bank gpio_bank_1510[2] = { { OMAP_MPUIO_BASE, INT_MPUIO, IH_MPUIO_BASE, METHOD_MPUIO }, { OMAP1510_GPIO_BASE, INT_GPIO_BANK1, IH_GPIO_BASE, METHOD_GPIO_1510 } @@ -123,12 +159,21 @@ static struct gpio_bank gpio_bank_730[7] = { }; #endif +#ifdef CONFIG_ARCH_OMAP24XX +static struct gpio_bank gpio_bank_24xx[4] = { + { OMAP24XX_GPIO1_BASE, INT_24XX_GPIO_BANK1, IH_GPIO_BASE, METHOD_GPIO_24XX }, + { OMAP24XX_GPIO2_BASE, INT_24XX_GPIO_BANK2, IH_GPIO_BASE + 32, METHOD_GPIO_24XX }, + { OMAP24XX_GPIO3_BASE, INT_24XX_GPIO_BANK3, IH_GPIO_BASE + 64, METHOD_GPIO_24XX }, + { OMAP24XX_GPIO4_BASE, INT_24XX_GPIO_BANK4, IH_GPIO_BASE + 96, METHOD_GPIO_24XX }, +}; +#endif + static struct gpio_bank *gpio_bank; static int gpio_bank_count; static inline struct gpio_bank *get_gpio_bank(int gpio) { -#ifdef CONFIG_ARCH_OMAP1510 +#ifdef CONFIG_ARCH_OMAP15XX if (cpu_is_omap1510()) { if (OMAP_GPIO_IS_MPUIO(gpio)) return &gpio_bank[0]; @@ -149,14 +194,23 @@ static inline struct gpio_bank *get_gpio_bank(int gpio) return &gpio_bank[1 + (gpio >> 5)]; } #endif +#ifdef CONFIG_ARCH_OMAP24XX + if (cpu_is_omap24xx()) + return &gpio_bank[gpio >> 5]; +#endif } static inline int get_gpio_index(int gpio) { +#ifdef CONFIG_ARCH_OMAP730 if (cpu_is_omap730()) return gpio & 0x1f; - else - return gpio & 0x0f; +#endif +#ifdef CONFIG_ARCH_OMAP24XX + if (cpu_is_omap24xx()) + return gpio & 0x1f; +#endif + return gpio & 0x0f; } static inline int gpio_valid(int gpio) @@ -168,7 +222,7 @@ static inline int gpio_valid(int gpio) return -1; return 0; } -#ifdef CONFIG_ARCH_OMAP1510 +#ifdef CONFIG_ARCH_OMAP15XX if (cpu_is_omap1510() && gpio < 16) return 0; #endif @@ -179,6 +233,10 @@ static inline int gpio_valid(int gpio) #ifdef CONFIG_ARCH_OMAP730 if (cpu_is_omap730() && gpio < 192) return 0; +#endif +#ifdef CONFIG_ARCH_OMAP24XX + if (cpu_is_omap24xx() && gpio < 128) + return 0; #endif return -1; } @@ -195,7 +253,7 @@ static int check_gpio(int gpio) static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input) { - u32 reg = bank->base; + void __iomem *reg = bank->base; u32 l; switch (bank->method) { @@ -211,6 +269,9 @@ static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input) case METHOD_GPIO_730: reg += OMAP730_GPIO_DIR_CONTROL; break; + case METHOD_GPIO_24XX: + reg += OMAP24XX_GPIO_OE; + break; } l = __raw_readl(reg); if (is_input) @@ -234,7 +295,7 @@ void omap_set_gpio_direction(int gpio, int is_input) static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable) { - u32 reg = bank->base; + void __iomem *reg = bank->base; u32 l = 0; switch (bank->method) { @@ -269,6 +330,13 @@ static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable) else l &= ~(1 << gpio); break; + case METHOD_GPIO_24XX: + if (enable) + reg += OMAP24XX_GPIO_SETDATAOUT; + else + reg += OMAP24XX_GPIO_CLEARDATAOUT; + l = 1 << gpio; + break; default: BUG(); return; @@ -291,7 +359,7 @@ void omap_set_gpio_dataout(int gpio, int enable) int omap_get_gpio_datain(int gpio) { struct gpio_bank *bank; - u32 reg; + void __iomem *reg; if (check_gpio(gpio) < 0) return -1; @@ -310,109 +378,132 @@ int omap_get_gpio_datain(int gpio) case METHOD_GPIO_730: reg += OMAP730_GPIO_DATA_INPUT; break; + case METHOD_GPIO_24XX: + reg += OMAP24XX_GPIO_DATAIN; + break; default: BUG(); return -1; } - return (__raw_readl(reg) & (1 << get_gpio_index(gpio))) != 0; + return (__raw_readl(reg) + & (1 << get_gpio_index(gpio))) != 0; } -static void _set_gpio_edge_ctrl(struct gpio_bank *bank, int gpio, int edge) +#define MOD_REG_BIT(reg, bit_mask, set) \ +do { \ + int l = __raw_readl(base + reg); \ + if (set) l |= bit_mask; \ + else l &= ~bit_mask; \ + __raw_writel(l, base + reg); \ +} while(0) + +static inline void set_24xx_gpio_triggering(void __iomem *base, int gpio, int trigger) { - u32 reg = bank->base; - u32 l; + u32 gpio_bit = 1 << gpio; + + MOD_REG_BIT(OMAP24XX_GPIO_LEVELDETECT0, gpio_bit, + trigger & IRQT_LOW); + MOD_REG_BIT(OMAP24XX_GPIO_LEVELDETECT1, gpio_bit, + trigger & IRQT_HIGH); + MOD_REG_BIT(OMAP24XX_GPIO_RISINGDETECT, gpio_bit, + trigger & IRQT_RISING); + MOD_REG_BIT(OMAP24XX_GPIO_FALLINGDETECT, gpio_bit, + trigger & IRQT_FALLING); + /* FIXME: Possibly do 'set_irq_handler(j, do_level_IRQ)' if only level + * triggering requested. */ +} + +static int _set_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger) +{ + void __iomem *reg = bank->base; + u32 l = 0; switch (bank->method) { case METHOD_MPUIO: reg += OMAP_MPUIO_GPIO_INT_EDGE; l = __raw_readl(reg); - if (edge == OMAP_GPIO_RISING_EDGE) + if (trigger == IRQT_RISING) l |= 1 << gpio; - else + else if (trigger == IRQT_FALLING) l &= ~(1 << gpio); - __raw_writel(l, reg); + else + goto bad; break; case METHOD_GPIO_1510: reg += OMAP1510_GPIO_INT_CONTROL; l = __raw_readl(reg); - if (edge == OMAP_GPIO_RISING_EDGE) + if (trigger == IRQT_RISING) l |= 1 << gpio; - else + else if (trigger == IRQT_FALLING) l &= ~(1 << gpio); - __raw_writel(l, reg); + else + goto bad; break; case METHOD_GPIO_1610: - edge &= 0x03; if (gpio & 0x08) reg += OMAP1610_GPIO_EDGE_CTRL2; else reg += OMAP1610_GPIO_EDGE_CTRL1; gpio &= 0x07; + /* We allow only edge triggering, i.e. two lowest bits */ + if (trigger & ~IRQT_BOTHEDGE) + BUG(); + /* NOTE: knows __IRQT_{FAL,RIS}EDGE match OMAP hardware */ + trigger &= 0x03; l = __raw_readl(reg); l &= ~(3 << (gpio << 1)); - l |= edge << (gpio << 1); - __raw_writel(l, reg); + l |= trigger << (gpio << 1); break; case METHOD_GPIO_730: reg += OMAP730_GPIO_INT_CONTROL; l = __raw_readl(reg); - if (edge == OMAP_GPIO_RISING_EDGE) + if (trigger == IRQT_RISING) l |= 1 << gpio; - else + else if (trigger == IRQT_FALLING) l &= ~(1 << gpio); - __raw_writel(l, reg); + else + goto bad; + break; + case METHOD_GPIO_24XX: + set_24xx_gpio_triggering(reg, gpio, trigger); break; default: BUG(); - return; + goto bad; } + __raw_writel(l, reg); + return 0; +bad: + return -EINVAL; } -void omap_set_gpio_edge_ctrl(int gpio, int edge) +static int gpio_irq_type(unsigned irq, unsigned type) { struct gpio_bank *bank; + unsigned gpio; + int retval; + + if (irq > IH_MPUIO_BASE) + gpio = OMAP_MPUIO(irq - IH_MPUIO_BASE); + else + gpio = irq - IH_GPIO_BASE; if (check_gpio(gpio) < 0) - return; + return -EINVAL; + + if (type & (__IRQT_LOWLVL|__IRQT_HIGHLVL|IRQT_PROBE)) + return -EINVAL; + bank = get_gpio_bank(gpio); spin_lock(&bank->lock); - _set_gpio_edge_ctrl(bank, get_gpio_index(gpio), edge); + retval = _set_gpio_triggering(bank, get_gpio_index(gpio), type); spin_unlock(&bank->lock); -} - - -static int _get_gpio_edge_ctrl(struct gpio_bank *bank, int gpio) -{ - u32 reg = bank->base, l; - - switch (bank->method) { - case METHOD_MPUIO: - l = __raw_readl(reg + OMAP_MPUIO_GPIO_INT_EDGE); - return (l & (1 << gpio)) ? - OMAP_GPIO_RISING_EDGE : OMAP_GPIO_FALLING_EDGE; - case METHOD_GPIO_1510: - l = __raw_readl(reg + OMAP1510_GPIO_INT_CONTROL); - return (l & (1 << gpio)) ? - OMAP_GPIO_RISING_EDGE : OMAP_GPIO_FALLING_EDGE; - case METHOD_GPIO_1610: - if (gpio & 0x08) - reg += OMAP1610_GPIO_EDGE_CTRL2; - else - reg += OMAP1610_GPIO_EDGE_CTRL1; - return (__raw_readl(reg) >> ((gpio & 0x07) << 1)) & 0x03; - case METHOD_GPIO_730: - l = __raw_readl(reg + OMAP730_GPIO_INT_CONTROL); - return (l & (1 << gpio)) ? - OMAP_GPIO_RISING_EDGE : OMAP_GPIO_FALLING_EDGE; - default: - BUG(); - return -1; - } + return retval; } static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask) { - u32 reg = bank->base; + void __iomem *reg = bank->base; switch (bank->method) { case METHOD_MPUIO: @@ -428,6 +519,9 @@ static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask) case METHOD_GPIO_730: reg += OMAP730_GPIO_INT_STATUS; break; + case METHOD_GPIO_24XX: + reg += OMAP24XX_GPIO_IRQSTATUS1; + break; default: BUG(); return; @@ -442,7 +536,7 @@ static inline void _clear_gpio_irqstatus(struct gpio_bank *bank, int gpio) static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask, int enable) { - u32 reg = bank->base; + void __iomem *reg = bank->base; u32 l; switch (bank->method) { @@ -477,6 +571,13 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask, int enab else l |= gpio_mask; break; + case METHOD_GPIO_24XX: + if (enable) + reg += OMAP24XX_GPIO_SETIRQENABLE1; + else + reg += OMAP24XX_GPIO_CLEARIRQENABLE1; + l = gpio_mask; + break; default: BUG(); return; @@ -489,6 +590,50 @@ static inline void _set_gpio_irqenable(struct gpio_bank *bank, int gpio, int ena _enable_gpio_irqbank(bank, 1 << get_gpio_index(gpio), enable); } +/* + * Note that ENAWAKEUP needs to be enabled in GPIO_SYSCONFIG register. + * 1510 does not seem to have a wake-up register. If JTAG is connected + * to the target, system will wake up always on GPIO events. While + * system is running all registered GPIO interrupts need to have wake-up + * enabled. When system is suspended, only selected GPIO interrupts need + * to have wake-up enabled. + */ +static int _set_gpio_wakeup(struct gpio_bank *bank, int gpio, int enable) +{ + switch (bank->method) { + case METHOD_GPIO_1610: + case METHOD_GPIO_24XX: + spin_lock(&bank->lock); + if (enable) + bank->suspend_wakeup |= (1 << gpio); + else + bank->suspend_wakeup &= ~(1 << gpio); + spin_unlock(&bank->lock); + return 0; + default: + printk(KERN_ERR "Can't enable GPIO wakeup for method %i\n", + bank->method); + return -EINVAL; + } +} + +/* Use disable_irq_wake() and enable_irq_wake() functions from drivers */ +static int gpio_wake_enable(unsigned int irq, unsigned int enable) +{ + unsigned int gpio = irq - IH_GPIO_BASE; + struct gpio_bank *bank; + int retval; + + if (check_gpio(gpio) < 0) + return -ENODEV; + bank = get_gpio_bank(gpio); + spin_lock(&bank->lock); + retval = _set_gpio_wakeup(bank, get_gpio_index(gpio), enable); + spin_unlock(&bank->lock); + + return retval; +} + int omap_request_gpio(int gpio) { struct gpio_bank *bank; @@ -505,14 +650,32 @@ int omap_request_gpio(int gpio) return -1; } bank->reserved_map |= (1 << get_gpio_index(gpio)); -#ifdef CONFIG_ARCH_OMAP1510 + + /* Set trigger to none. You need to enable the trigger after request_irq */ + _set_gpio_triggering(bank, get_gpio_index(gpio), IRQT_NOEDGE); + +#ifdef CONFIG_ARCH_OMAP15XX if (bank->method == METHOD_GPIO_1510) { - u32 reg; + void __iomem *reg; - /* Claim the pin for the ARM */ + /* Claim the pin for MPU */ reg = bank->base + OMAP1510_GPIO_PIN_CONTROL; __raw_writel(__raw_readl(reg) | (1 << get_gpio_index(gpio)), reg); } +#endif +#ifdef CONFIG_ARCH_OMAP16XX + if (bank->method == METHOD_GPIO_1610) { + /* Enable wake-up during idle for dynamic tick */ + void __iomem *reg = bank->base + OMAP1610_GPIO_SET_WAKEUPENA; + __raw_writel(1 << get_gpio_index(gpio), reg); + } +#endif +#ifdef CONFIG_ARCH_OMAP24XX + if (bank->method == METHOD_GPIO_24XX) { + /* Enable wake-up during idle for dynamic tick */ + void __iomem *reg = bank->base + OMAP24XX_GPIO_SETWKUENA; + __raw_writel(1 << get_gpio_index(gpio), reg); + } #endif spin_unlock(&bank->lock); @@ -533,6 +696,20 @@ void omap_free_gpio(int gpio) spin_unlock(&bank->lock); return; } +#ifdef CONFIG_ARCH_OMAP16XX + if (bank->method == METHOD_GPIO_1610) { + /* Disable wake-up during idle for dynamic tick */ + void __iomem *reg = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA; + __raw_writel(1 << get_gpio_index(gpio), reg); + } +#endif +#ifdef CONFIG_ARCH_OMAP24XX + if (bank->method == METHOD_GPIO_24XX) { + /* Disable wake-up during idle for dynamic tick */ + void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA; + __raw_writel(1 << get_gpio_index(gpio), reg); + } +#endif bank->reserved_map &= ~(1 << get_gpio_index(gpio)); _set_gpio_direction(bank, get_gpio_index(gpio), 1); _set_gpio_irqenable(bank, gpio, 0); @@ -552,7 +729,7 @@ void omap_free_gpio(int gpio) static void gpio_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs) { - u32 isr_reg = 0; + void __iomem *isr_reg = NULL; u32 isr; unsigned int gpio_irq; struct gpio_bank *bank; @@ -562,7 +739,7 @@ static void gpio_irq_handler(unsigned int irq, struct irqdesc *desc, bank = (struct gpio_bank *) desc->data; if (bank->method == METHOD_MPUIO) isr_reg = bank->base + OMAP_MPUIO_GPIO_INT; -#ifdef CONFIG_ARCH_OMAP1510 +#ifdef CONFIG_ARCH_OMAP15XX if (bank->method == METHOD_GPIO_1510) isr_reg = bank->base + OMAP1510_GPIO_INT_STATUS; #endif @@ -574,23 +751,29 @@ static void gpio_irq_handler(unsigned int irq, struct irqdesc *desc, if (bank->method == METHOD_GPIO_730) isr_reg = bank->base + OMAP730_GPIO_INT_STATUS; #endif +#ifdef CONFIG_ARCH_OMAP24XX + if (bank->method == METHOD_GPIO_24XX) + isr_reg = bank->base + OMAP24XX_GPIO_IRQSTATUS1; +#endif - isr = __raw_readl(isr_reg); - _enable_gpio_irqbank(bank, isr, 0); - _clear_gpio_irqbank(bank, isr); - _enable_gpio_irqbank(bank, isr, 1); - desc->chip->unmask(irq); - - if (unlikely(!isr)) - return; - - gpio_irq = bank->virtual_irq_start; - for (; isr != 0; isr >>= 1, gpio_irq++) { - struct irqdesc *d; - if (!(isr & 1)) - continue; - d = irq_desc + gpio_irq; - d->handle(gpio_irq, d, regs); + while(1) { + isr = __raw_readl(isr_reg); + _enable_gpio_irqbank(bank, isr, 0); + _clear_gpio_irqbank(bank, isr); + _enable_gpio_irqbank(bank, isr, 1); + desc->chip->unmask(irq); + + if (!isr) + break; + + gpio_irq = bank->virtual_irq_start; + for (; isr != 0; isr >>= 1, gpio_irq++) { + struct irqdesc *d; + if (!(isr & 1)) + continue; + d = irq_desc + gpio_irq; + desc_handle_irq(gpio_irq, d, regs); + } } } @@ -613,14 +796,10 @@ static void gpio_mask_irq(unsigned int irq) static void gpio_unmask_irq(unsigned int irq) { unsigned int gpio = irq - IH_GPIO_BASE; + unsigned int gpio_idx = get_gpio_index(gpio); struct gpio_bank *bank = get_gpio_bank(gpio); - if (_get_gpio_edge_ctrl(bank, get_gpio_index(gpio)) == OMAP_GPIO_NO_EDGE) { - printk(KERN_ERR "OMAP GPIO %d: trying to enable GPIO IRQ while no edge is set\n", - gpio); - _set_gpio_edge_ctrl(bank, get_gpio_index(gpio), OMAP_GPIO_RISING_EDGE); - } - _set_gpio_irqenable(bank, gpio, 1); + _set_gpio_irqenable(bank, gpio_idx, 1); } static void mpuio_ack_irq(unsigned int irq) @@ -645,9 +824,11 @@ static void mpuio_unmask_irq(unsigned int irq) } static struct irqchip gpio_irq_chip = { - .ack = gpio_ack_irq, - .mask = gpio_mask_irq, - .unmask = gpio_unmask_irq, + .ack = gpio_ack_irq, + .mask = gpio_mask_irq, + .unmask = gpio_unmask_irq, + .set_type = gpio_irq_type, + .set_wake = gpio_wake_enable, }; static struct irqchip mpuio_irq_chip = { @@ -656,7 +837,9 @@ static struct irqchip mpuio_irq_chip = { .unmask = mpuio_unmask_irq }; -static int initialized = 0; +static int initialized; +static struct clk * gpio_ick; +static struct clk * gpio_fck; static int __init _omap_gpio_init(void) { @@ -665,7 +848,27 @@ static int __init _omap_gpio_init(void) initialized = 1; -#ifdef CONFIG_ARCH_OMAP1510 + if (cpu_is_omap1510()) { + gpio_ick = clk_get(NULL, "arm_gpio_ck"); + if (IS_ERR(gpio_ick)) + printk("Could not get arm_gpio_ck\n"); + else + clk_use(gpio_ick); + } + if (cpu_is_omap24xx()) { + gpio_ick = clk_get(NULL, "gpios_ick"); + if (IS_ERR(gpio_ick)) + printk("Could not get gpios_ick\n"); + else + clk_use(gpio_ick); + gpio_fck = clk_get(NULL, "gpios_fck"); + if (IS_ERR(gpio_ick)) + printk("Could not get gpios_fck\n"); + else + clk_use(gpio_fck); + } + +#ifdef CONFIG_ARCH_OMAP15XX if (cpu_is_omap1510()) { printk(KERN_INFO "OMAP1510 GPIO hardware\n"); gpio_bank_count = 2; @@ -674,7 +877,7 @@ static int __init _omap_gpio_init(void) #endif #if defined(CONFIG_ARCH_OMAP16XX) if (cpu_is_omap16xx()) { - int rev; + u32 rev; gpio_bank_count = 5; gpio_bank = gpio_bank_1610; @@ -689,6 +892,17 @@ static int __init _omap_gpio_init(void) gpio_bank_count = 7; gpio_bank = gpio_bank_730; } +#endif +#ifdef CONFIG_ARCH_OMAP24XX + if (cpu_is_omap24xx()) { + int rev; + + gpio_bank_count = 4; + gpio_bank = gpio_bank_24xx; + rev = omap_readl(gpio_bank[0].base + OMAP24XX_GPIO_REVISION); + printk(KERN_INFO "OMAP24xx GPIO hardware version %d.%d\n", + (rev >> 4) & 0x0f, rev & 0x0f); + } #endif for (i = 0; i < gpio_bank_count; i++) { int j, gpio_count = 16; @@ -700,7 +914,7 @@ static int __init _omap_gpio_init(void) if (bank->method == METHOD_MPUIO) { omap_writew(0xFFFF, OMAP_MPUIO_BASE + OMAP_MPUIO_GPIO_MASKIT); } -#ifdef CONFIG_ARCH_OMAP1510 +#ifdef CONFIG_ARCH_OMAP15XX if (bank->method == METHOD_GPIO_1510) { __raw_writew(0xffff, bank->base + OMAP1510_GPIO_INT_MASK); __raw_writew(0x0000, bank->base + OMAP1510_GPIO_INT_STATUS); @@ -710,6 +924,7 @@ static int __init _omap_gpio_init(void) if (bank->method == METHOD_GPIO_1610) { __raw_writew(0x0000, bank->base + OMAP1610_GPIO_IRQENABLE1); __raw_writew(0xffff, bank->base + OMAP1610_GPIO_IRQSTATUS1); + __raw_writew(0x0014, bank->base + OMAP1610_GPIO_SYSCONFIG); } #endif #ifdef CONFIG_ARCH_OMAP730 @@ -719,6 +934,14 @@ static int __init _omap_gpio_init(void) gpio_count = 32; /* 730 has 32-bit GPIOs */ } +#endif +#ifdef CONFIG_ARCH_OMAP24XX + if (bank->method == METHOD_GPIO_24XX) { + __raw_writel(0x00000000, bank->base + OMAP24XX_GPIO_IRQENABLE1); + __raw_writel(0xffffffff, bank->base + OMAP24XX_GPIO_IRQSTATUS1); + + gpio_count = 32; + } #endif for (j = bank->virtual_irq_start; j < bank->virtual_irq_start + gpio_count; j++) { @@ -735,14 +958,100 @@ static int __init _omap_gpio_init(void) /* Enable system clock for GPIO module. * The CAM_CLK_CTRL *is* really the right place. */ - if (cpu_is_omap1610() || cpu_is_omap1710()) + if (cpu_is_omap16xx()) omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04, ULPD_CAM_CLK_CTRL); return 0; } +#if defined (CONFIG_ARCH_OMAP16XX) || defined (CONFIG_ARCH_OMAP24XX) +static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg) +{ + int i; + + if (!cpu_is_omap24xx() && !cpu_is_omap16xx()) + return 0; + + for (i = 0; i < gpio_bank_count; i++) { + struct gpio_bank *bank = &gpio_bank[i]; + void __iomem *wake_status; + void __iomem *wake_clear; + void __iomem *wake_set; + + switch (bank->method) { + case METHOD_GPIO_1610: + wake_status = bank->base + OMAP1610_GPIO_WAKEUPENABLE; + wake_clear = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA; + wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA; + break; + case METHOD_GPIO_24XX: + wake_status = bank->base + OMAP24XX_GPIO_SETWKUENA; + wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA; + wake_set = bank->base + OMAP24XX_GPIO_SETWKUENA; + break; + default: + continue; + } + + spin_lock(&bank->lock); + bank->saved_wakeup = __raw_readl(wake_status); + __raw_writel(0xffffffff, wake_clear); + __raw_writel(bank->suspend_wakeup, wake_set); + spin_unlock(&bank->lock); + } + + return 0; +} + +static int omap_gpio_resume(struct sys_device *dev) +{ + int i; + + if (!cpu_is_omap24xx() && !cpu_is_omap16xx()) + return 0; + + for (i = 0; i < gpio_bank_count; i++) { + struct gpio_bank *bank = &gpio_bank[i]; + void __iomem *wake_clear; + void __iomem *wake_set; + + switch (bank->method) { + case METHOD_GPIO_1610: + wake_clear = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA; + wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA; + break; + case METHOD_GPIO_24XX: + wake_clear = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA; + wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA; + break; + default: + continue; + } + + spin_lock(&bank->lock); + __raw_writel(0xffffffff, wake_clear); + __raw_writel(bank->saved_wakeup, wake_set); + spin_unlock(&bank->lock); + } + + return 0; +} + +static struct sysdev_class omap_gpio_sysclass = { + set_kset_name("gpio"), + .suspend = omap_gpio_suspend, + .resume = omap_gpio_resume, +}; + +static struct sys_device omap_gpio_device = { + .id = 0, + .cls = &omap_gpio_sysclass, +}; +#endif + /* * This may get called early from board specific init + * for boards that have interrupts routed via FPGA. */ int omap_gpio_init(void) { @@ -752,11 +1061,30 @@ int omap_gpio_init(void) return 0; } +static int __init omap_gpio_sysinit(void) +{ + int ret = 0; + + if (!initialized) + ret = _omap_gpio_init(); + +#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) + if (cpu_is_omap16xx() || cpu_is_omap24xx()) { + if (ret == 0) { + ret = sysdev_class_register(&omap_gpio_sysclass); + if (ret == 0) + ret = sysdev_register(&omap_gpio_device); + } + } +#endif + + return ret; +} + EXPORT_SYMBOL(omap_request_gpio); EXPORT_SYMBOL(omap_free_gpio); EXPORT_SYMBOL(omap_set_gpio_direction); EXPORT_SYMBOL(omap_set_gpio_dataout); EXPORT_SYMBOL(omap_get_gpio_datain); -EXPORT_SYMBOL(omap_set_gpio_edge_ctrl); -arch_initcall(omap_gpio_init); +arch_initcall(omap_gpio_sysinit);