diff options
Diffstat (limited to 'arch/arm/plat-omap/gpio.c')
-rw-r--r-- | arch/arm/plat-omap/gpio.c | 134 |
1 files changed, 100 insertions, 34 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c index 17d7afe42b8..7fd89ba8d3b 100644 --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -6,6 +6,9 @@ * Copyright (C) 2003-2005 Nokia Corporation * Written by Juha Yrjölä <juha.yrjola@nokia.com> * + * Copyright (C) 2009 Texas Instruments + * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com> + * * 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. @@ -146,6 +149,16 @@ #define OMAP34XX_GPIO5_BASE IO_ADDRESS(0x49056000) #define OMAP34XX_GPIO6_BASE IO_ADDRESS(0x49058000) +/* + * OMAP44XX specific GPIO registers + */ +#define OMAP44XX_GPIO1_BASE IO_ADDRESS(0x4a310000) +#define OMAP44XX_GPIO2_BASE IO_ADDRESS(0x48055000) +#define OMAP44XX_GPIO3_BASE IO_ADDRESS(0x48057000) +#define OMAP44XX_GPIO4_BASE IO_ADDRESS(0x48059000) +#define OMAP44XX_GPIO5_BASE IO_ADDRESS(0x4805B000) +#define OMAP44XX_GPIO6_BASE IO_ADDRESS(0x4805D000) + #define OMAP_MPUIO_VBASE IO_ADDRESS(OMAP_MPUIO_BASE) struct gpio_bank { @@ -153,11 +166,13 @@ struct gpio_bank { u16 irq; u16 virtual_irq_start; int method; -#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \ + defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4) u32 suspend_wakeup; u32 saved_wakeup; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) u32 non_wakeup_gpios; u32 enabled_non_wakeup_gpios; @@ -251,6 +266,24 @@ static struct gpio_bank gpio_bank_34xx[6] = { #endif +#ifdef CONFIG_ARCH_OMAP4 +static struct gpio_bank gpio_bank_44xx[6] = { + { OMAP44XX_GPIO1_BASE, INT_44XX_GPIO_BANK1, IH_GPIO_BASE, \ + METHOD_GPIO_24XX }, + { OMAP44XX_GPIO2_BASE, INT_44XX_GPIO_BANK2, IH_GPIO_BASE + 32, \ + METHOD_GPIO_24XX }, + { OMAP44XX_GPIO3_BASE, INT_44XX_GPIO_BANK3, IH_GPIO_BASE + 64, \ + METHOD_GPIO_24XX }, + { OMAP44XX_GPIO4_BASE, INT_44XX_GPIO_BANK4, IH_GPIO_BASE + 96, \ + METHOD_GPIO_24XX }, + { OMAP44XX_GPIO5_BASE, INT_44XX_GPIO_BANK5, IH_GPIO_BASE + 128, \ + METHOD_GPIO_24XX }, + { OMAP44XX_GPIO6_BASE, INT_44XX_GPIO_BANK6, IH_GPIO_BASE + 160, \ + METHOD_GPIO_24XX }, +}; + +#endif + static struct gpio_bank *gpio_bank; static int gpio_bank_count; @@ -273,7 +306,7 @@ static inline struct gpio_bank *get_gpio_bank(int gpio) } if (cpu_is_omap24xx()) return &gpio_bank[gpio >> 5]; - if (cpu_is_omap34xx()) + if (cpu_is_omap34xx() || cpu_is_omap44xx()) return &gpio_bank[gpio >> 5]; BUG(); return NULL; @@ -285,7 +318,7 @@ static inline int get_gpio_index(int gpio) return gpio & 0x1f; if (cpu_is_omap24xx()) return gpio & 0x1f; - if (cpu_is_omap34xx()) + if (cpu_is_omap34xx() || cpu_is_omap44xx()) return gpio & 0x1f; return gpio & 0x0f; } @@ -307,7 +340,7 @@ static inline int gpio_valid(int gpio) return 0; if (cpu_is_omap24xx() && gpio < 128) return 0; - if (cpu_is_omap34xx() && gpio < 160) + if ((cpu_is_omap34xx() || cpu_is_omap44xx()) && gpio < 192) return 0; return -1; } @@ -353,7 +386,8 @@ static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input) reg += OMAP850_GPIO_DIR_CONTROL; break; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) case METHOD_GPIO_24XX: reg += OMAP24XX_GPIO_OE; break; @@ -425,7 +459,8 @@ static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable) l &= ~(1 << gpio); break; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) case METHOD_GPIO_24XX: if (enable) reg += OMAP24XX_GPIO_SETDATAOUT; @@ -476,7 +511,8 @@ static int __omap_get_gpio_datain(int gpio) reg += OMAP850_GPIO_DATA_INPUT; break; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) case METHOD_GPIO_24XX: reg += OMAP24XX_GPIO_DATAIN; break; @@ -520,7 +556,7 @@ void omap_set_gpio_debounce(int gpio, int enable) else goto done; - if (cpu_is_omap34xx()) { + if (cpu_is_omap34xx() || cpu_is_omap44xx()) { if (enable) clk_enable(bank->dbck); else @@ -550,7 +586,8 @@ void omap_set_gpio_debounce_time(int gpio, int enc_time) } EXPORT_SYMBOL(omap_set_gpio_debounce_time); -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger) { @@ -660,7 +697,8 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger) goto bad; break; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) case METHOD_GPIO_24XX: set_24xx_gpio_triggering(bank, gpio, trigger); break; @@ -745,7 +783,8 @@ static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask) reg += OMAP850_GPIO_INT_STATUS; break; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) case METHOD_GPIO_24XX: reg += OMAP24XX_GPIO_IRQSTATUS1; break; @@ -814,7 +853,8 @@ static u32 _get_gpio_irqbank_mask(struct gpio_bank *bank) inv = 1; break; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) case METHOD_GPIO_24XX: reg += OMAP24XX_GPIO_IRQENABLE1; mask = 0xffffffff; @@ -887,7 +927,8 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask, int enab l |= gpio_mask; break; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) case METHOD_GPIO_24XX: if (enable) reg += OMAP24XX_GPIO_SETIRQENABLE1; @@ -932,7 +973,8 @@ static int _set_gpio_wakeup(struct gpio_bank *bank, int gpio, int enable) spin_unlock_irqrestore(&bank->lock, flags); return 0; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) case METHOD_GPIO_24XX: if (bank->non_wakeup_gpios & (1 << gpio)) { printk(KERN_ERR "Unable to modify wakeup on " @@ -1017,7 +1059,8 @@ static void omap_gpio_free(struct gpio_chip *chip, unsigned offset) __raw_writel(1 << offset, reg); } #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) if (bank->method == METHOD_GPIO_24XX) { /* Disable wake-up during idle for dynamic tick */ void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA; @@ -1069,7 +1112,8 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) if (bank->method == METHOD_GPIO_850) isr_reg = bank->base + OMAP850_GPIO_INT_STATUS; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) if (bank->method == METHOD_GPIO_24XX) isr_reg = bank->base + OMAP24XX_GPIO_IRQSTATUS1; #endif @@ -1346,7 +1390,7 @@ static int gpio_2irq(struct gpio_chip *chip, unsigned offset) /*---------------------------------------------------------------------*/ static int initialized; -#if !defined(CONFIG_ARCH_OMAP3) +#if !(defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)) static struct clk * gpio_ick; #endif @@ -1359,7 +1403,7 @@ static struct clk * gpio5_ick; static struct clk * gpio5_fck; #endif -#if defined(CONFIG_ARCH_OMAP3) +#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4) static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS]; #endif @@ -1419,8 +1463,8 @@ static int __init _omap_gpio_init(void) } #endif -#if defined(CONFIG_ARCH_OMAP3) - if (cpu_is_omap34xx()) { +#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4) + if (cpu_is_omap34xx() || cpu_is_omap44xx()) { for (i = 0; i < OMAP34XX_NR_GPIOS; i++) { sprintf(clk_name, "gpio%d_ick", i + 1); gpio_iclks[i] = clk_get(NULL, clk_name); @@ -1497,6 +1541,17 @@ static int __init _omap_gpio_init(void) (rev >> 4) & 0x0f, rev & 0x0f); } #endif +#ifdef CONFIG_ARCH_OMAP4 + if (cpu_is_omap44xx()) { + int rev; + + gpio_bank_count = OMAP34XX_NR_GPIOS; + gpio_bank = gpio_bank_44xx; + rev = __raw_readl(gpio_bank[0].base + OMAP24XX_GPIO_REVISION); + printk(KERN_INFO "OMAP44xx 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; @@ -1520,7 +1575,8 @@ static int __init _omap_gpio_init(void) gpio_count = 32; /* 730 has 32-bit GPIOs */ } -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) if (bank->method == METHOD_GPIO_24XX) { static const u32 non_wakeup_gpios[] = { 0xe203ffc0, 0x08700040 @@ -1577,7 +1633,7 @@ static int __init _omap_gpio_init(void) set_irq_chained_handler(bank->irq, gpio_irq_handler); set_irq_data(bank->irq, bank); - if (cpu_is_omap34xx()) { + if (cpu_is_omap34xx() || cpu_is_omap44xx()) { sprintf(clk_name, "gpio%d_dbck", i + 1); bank->dbck = clk_get(NULL, clk_name); if (IS_ERR(bank->dbck)) @@ -1599,7 +1655,8 @@ static int __init _omap_gpio_init(void) return 0; } -#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \ + defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4) static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg) { int i; @@ -1622,7 +1679,8 @@ static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg) wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA; break; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) case METHOD_GPIO_24XX: wake_status = bank->base + OMAP24XX_GPIO_WAKE_EN; wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA; @@ -1663,7 +1721,8 @@ static int omap_gpio_resume(struct sys_device *dev) wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA; break; #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) case METHOD_GPIO_24XX: wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA; wake_set = bank->base + OMAP24XX_GPIO_SETWKUENA; @@ -1695,7 +1754,8 @@ static struct sys_device omap_gpio_device = { #endif -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) static int workaround_enabled; @@ -1711,7 +1771,8 @@ void omap2_gpio_prepare_for_retention(void) if (!(bank->enabled_non_wakeup_gpios)) continue; -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) bank->saved_datain = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN); l1 = __raw_readl(bank->base + OMAP24XX_GPIO_FALLINGDETECT); l2 = __raw_readl(bank->base + OMAP24XX_GPIO_RISINGDETECT); @@ -1720,7 +1781,8 @@ void omap2_gpio_prepare_for_retention(void) bank->saved_risingdetect = l2; l1 &= ~bank->enabled_non_wakeup_gpios; l2 &= ~bank->enabled_non_wakeup_gpios; -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) __raw_writel(l1, bank->base + OMAP24XX_GPIO_FALLINGDETECT); __raw_writel(l2, bank->base + OMAP24XX_GPIO_RISINGDETECT); #endif @@ -1745,7 +1807,8 @@ void omap2_gpio_resume_after_retention(void) if (!(bank->enabled_non_wakeup_gpios)) continue; -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) __raw_writel(bank->saved_fallingdetect, bank->base + OMAP24XX_GPIO_FALLINGDETECT); __raw_writel(bank->saved_risingdetect, @@ -1755,14 +1818,16 @@ void omap2_gpio_resume_after_retention(void) * state. If so, generate an IRQ by software. This is * horribly racy, but it's the best we can do to work around * this silicon bug. */ -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) l = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN); #endif l ^= bank->saved_datain; l &= bank->non_wakeup_gpios; if (l) { u32 old0, old1; -#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \ + defined(CONFIG_ARCH_OMAP4) old0 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT0); old1 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT1); __raw_writel(old0 | l, bank->base + OMAP24XX_GPIO_LEVELDETECT0); @@ -1798,7 +1863,8 @@ static int __init omap_gpio_sysinit(void) mpuio_init(); -#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) +#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \ + defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4) if (cpu_is_omap16xx() || cpu_class_is_omap2()) { if (ret == 0) { ret = sysdev_class_register(&omap_gpio_sysclass); @@ -1887,7 +1953,7 @@ static int dbg_gpio_show(struct seq_file *s, void *unused) irqstat = irq_desc[irq].status; #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \ - defined(CONFIG_ARCH_OMAP34XX) + defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4) if (is_in && ((bank->suspend_wakeup & mask) || irqstat & IRQ_TYPE_SENSE_MASK)) { char *trigger = NULL; |