diff options
Diffstat (limited to 'arch/arm/mach-pxa/pxa27x.c')
| -rw-r--r-- | arch/arm/mach-pxa/pxa27x.c | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index a9447f9fe66..301471a07a1 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -12,6 +12,7 @@ * published by the Free Software Foundation. */ #include <linux/gpio.h> +#include <linux/gpio-pxa.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> @@ -21,7 +22,6 @@ #include <linux/io.h> #include <linux/irq.h> #include <linux/i2c/pxa-i2c.h> -#include <linux/gpio.h> #include <asm/mach/map.h> #include <mach/hardware.h> @@ -30,7 +30,7 @@ #include <mach/irqs.h> #include <mach/pxa27x.h> #include <mach/reset.h> -#include <mach/ohci.h> +#include <linux/platform_data/usb-ohci-pxa27x.h> #include <mach/pm.h> #include <mach/dma.h> #include <mach/smemc.h> @@ -53,17 +53,25 @@ static unsigned long ac97_reset_config[] = { GPIO95_AC97_nRESET, }; -void pxa27x_assert_ac97reset(int reset_gpio, int on) +void pxa27x_configure_ac97reset(int reset_gpio, bool to_gpio) { + /* + * This helper function is used to work around a bug in the pxa27x's + * ac97 controller during a warm reset. The configuration of the + * reset_gpio is changed as follows: + * to_gpio == true: configured to generic output gpio and driven high + * to_gpio == false: configured to ac97 controller alt fn AC97_nRESET + */ + if (reset_gpio == 113) - pxa2xx_mfp_config(on ? &ac97_reset_config[0] : - &ac97_reset_config[1], 1); + pxa2xx_mfp_config(to_gpio ? &ac97_reset_config[0] : + &ac97_reset_config[1], 1); if (reset_gpio == 95) - pxa2xx_mfp_config(on ? &ac97_reset_config[2] : - &ac97_reset_config[3], 1); + pxa2xx_mfp_config(to_gpio ? &ac97_reset_config[2] : + &ac97_reset_config[3], 1); } -EXPORT_SYMBOL_GPL(pxa27x_assert_ac97reset); +EXPORT_SYMBOL_GPL(pxa27x_configure_ac97reset); /* Crystal clock: 13MHz */ #define BASE_CLK 13000000 @@ -229,6 +237,8 @@ static struct clk_lookup pxa27x_clkregs[] = { INIT_CLKREG(&clk_pxa27x_im, NULL, "IMCLK"), INIT_CLKREG(&clk_pxa27x_memc, NULL, "MEMCLK"), INIT_CLKREG(&clk_pxa27x_mem, "pxa2xx-pcmcia", NULL), + INIT_CLKREG(&clk_dummy, "pxa27x-gpio", NULL), + INIT_CLKREG(&clk_dummy, "sa1100-rtc", NULL), }; #ifdef CONFIG_PM @@ -355,7 +365,7 @@ static inline void pxa27x_init_pm(void) {} */ static int pxa27x_set_wake(struct irq_data *d, unsigned int on) { - int gpio = irq_to_gpio(d->irq); + int gpio = pxa_irq_to_gpio(d->irq); uint32_t mask; if (gpio >= 0 && gpio < 128) @@ -386,7 +396,6 @@ static int pxa27x_set_wake(struct irq_data *d, unsigned int on) void __init pxa27x_init_irq(void) { pxa_init_irq(34, pxa27x_set_wake); - pxa_init_gpio(IRQ_GPIO_2_x, 2, 120, pxa27x_set_wake); } static struct map_desc pxa27x_io_desc[] __initdata = { @@ -421,6 +430,11 @@ void __init pxa27x_set_i2c_power_info(struct i2c_pxa_platform_data *info) pxa_register_device(&pxa27x_device_i2c_power, info); } +static struct pxa_gpio_platform_data pxa27x_gpio_info __initdata = { + .irq_base = PXA_GPIO_TO_IRQ(0), + .gpio_set_wake = gpio_set_wake, +}; + static struct platform_device *devices[] __initdata = { &pxa27x_device_udc, &pxa_device_pmu, @@ -455,9 +469,9 @@ static int __init pxa27x_init(void) register_syscore_ops(&pxa_irq_syscore_ops); register_syscore_ops(&pxa2xx_mfp_syscore_ops); - register_syscore_ops(&pxa_gpio_syscore_ops); register_syscore_ops(&pxa2xx_clock_syscore_ops); + pxa_register_device(&pxa27x_device_gpio, &pxa27x_gpio_info); ret = platform_add_devices(devices, ARRAY_SIZE(devices)); } |