diff options
| -rw-r--r-- | arch/arm/mach-pxa/generic.c | 57 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/generic.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/pxa25x.c | 19 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/pxa27x.c | 23 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/pxa3xx.c | 2 |
5 files changed, 64 insertions, 38 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 698aeec5296..76970598f55 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -23,6 +23,7 @@ #include <linux/ioport.h> #include <linux/pm.h> #include <linux/string.h> +#include <linux/sysdev.h> #include <asm/hardware.h> #include <asm/irq.h> @@ -226,3 +227,59 @@ void __init pxa_map_io(void) iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); get_clk_frequency_khz(1); } + +#ifdef CONFIG_PM + +static unsigned long saved_gplr[4]; +static unsigned long saved_gpdr[4]; +static unsigned long saved_grer[4]; +static unsigned long saved_gfer[4]; + +static int pxa_gpio_suspend(struct sys_device *dev, pm_message_t state) +{ + int i, gpio; + + for (gpio = 0, i = 0; gpio < pxa_last_gpio; gpio += 32, i++) { + saved_gplr[i] = GPLR(gpio); + saved_gpdr[i] = GPDR(gpio); + saved_grer[i] = GRER(gpio); + saved_gfer[i] = GFER(gpio); + + /* Clear GPIO transition detect bits */ + GEDR(gpio) = GEDR(gpio); + } + return 0; +} + +static int pxa_gpio_resume(struct sys_device *dev) +{ + int i, gpio; + + for (gpio = 0, i = 0; gpio < pxa_last_gpio; gpio += 32, i++) { + /* restore level with set/clear */ + GPSR(gpio) = saved_gplr[i]; + GPCR(gpio) = ~saved_gplr[i]; + + GRER(gpio) = saved_grer[i]; + GFER(gpio) = saved_gfer[i]; + GPDR(gpio) = saved_gpdr[i]; + } + return 0; +} +#else +#define pxa_gpio_suspend NULL +#define pxa_gpio_resume NULL +#endif + +struct sysdev_class pxa_gpio_sysclass = { + .name = "gpio", + .suspend = pxa_gpio_suspend, + .resume = pxa_gpio_resume, +}; + +static int __init pxa_gpio_init(void) +{ + return sysdev_class_register(&pxa_gpio_sysclass); +} + +core_initcall(pxa_gpio_init); diff --git a/arch/arm/mach-pxa/generic.h b/arch/arm/mach-pxa/generic.h index 367b67923e1..1a16ad3ecee 100644 --- a/arch/arm/mach-pxa/generic.h +++ b/arch/arm/mach-pxa/generic.h @@ -54,3 +54,4 @@ extern unsigned pxa3xx_get_memclk_frequency_10khz(void); #endif extern struct sysdev_class pxa_irq_sysclass; +extern struct sysdev_class pxa_gpio_sysclass; diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index 797635eec6b..599e53fcc2c 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -142,11 +142,6 @@ static struct clk pxa25x_clks[] = { #define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x #define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x] -#define RESTORE_GPLEVEL(n) do { \ - GPSR##n = sleep_save[SLEEP_SAVE_GPLR##n]; \ - GPCR##n = ~sleep_save[SLEEP_SAVE_GPLR##n]; \ -} while (0) - /* * List of global PXA peripheral registers to preserve. * More ones like CP and general purpose register values are preserved @@ -154,10 +149,6 @@ static struct clk pxa25x_clks[] = { */ enum { SLEEP_SAVE_START = 0, - SLEEP_SAVE_GPLR0, SLEEP_SAVE_GPLR1, SLEEP_SAVE_GPLR2, - SLEEP_SAVE_GPDR0, SLEEP_SAVE_GPDR1, SLEEP_SAVE_GPDR2, - SLEEP_SAVE_GRER0, SLEEP_SAVE_GRER1, SLEEP_SAVE_GRER2, - SLEEP_SAVE_GFER0, SLEEP_SAVE_GFER1, SLEEP_SAVE_GFER2, SLEEP_SAVE_PGSR0, SLEEP_SAVE_PGSR1, SLEEP_SAVE_PGSR2, SLEEP_SAVE_GAFR0_L, SLEEP_SAVE_GAFR0_U, @@ -174,10 +165,6 @@ enum { SLEEP_SAVE_START = 0, static void pxa25x_cpu_pm_save(unsigned long *sleep_save) { - SAVE(GPLR0); SAVE(GPLR1); SAVE(GPLR2); - SAVE(GPDR0); SAVE(GPDR1); SAVE(GPDR2); - SAVE(GRER0); SAVE(GRER1); SAVE(GRER2); - SAVE(GFER0); SAVE(GFER1); SAVE(GFER2); SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2); SAVE(GAFR0_L); SAVE(GAFR0_U); @@ -197,13 +184,9 @@ static void pxa25x_cpu_pm_restore(unsigned long *sleep_save) PSPR = 0; /* restore registers */ - RESTORE_GPLEVEL(0); RESTORE_GPLEVEL(1); RESTORE_GPLEVEL(2); - RESTORE(GPDR0); RESTORE(GPDR1); RESTORE(GPDR2); RESTORE(GAFR0_L); RESTORE(GAFR0_U); RESTORE(GAFR1_L); RESTORE(GAFR1_U); RESTORE(GAFR2_L); RESTORE(GAFR2_U); - RESTORE(GRER0); RESTORE(GRER1); RESTORE(GRER2); - RESTORE(GFER0); RESTORE(GFER1); RESTORE(GFER2); RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2); PSSR = PSSR_RDH | PSSR_PH; @@ -302,6 +285,8 @@ static struct platform_device *pxa25x_devices[] __initdata = { static struct sys_device pxa25x_sysdev[] = { { .cls = &pxa_irq_sysclass, + }, { + .cls = &pxa_gpio_sysclass, }, }; diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index 343296a710b..46a951c3e5a 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -172,11 +172,6 @@ static struct clk pxa27x_clks[] = { #define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x #define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x] -#define RESTORE_GPLEVEL(n) do { \ - GPSR##n = sleep_save[SLEEP_SAVE_GPLR##n]; \ - GPCR##n = ~sleep_save[SLEEP_SAVE_GPLR##n]; \ -} while (0) - /* * List of global PXA peripheral registers to preserve. * More ones like CP and general purpose register values are preserved @@ -184,10 +179,6 @@ static struct clk pxa27x_clks[] = { */ enum { SLEEP_SAVE_START = 0, - SLEEP_SAVE_GPLR0, SLEEP_SAVE_GPLR1, SLEEP_SAVE_GPLR2, SLEEP_SAVE_GPLR3, - SLEEP_SAVE_GPDR0, SLEEP_SAVE_GPDR1, SLEEP_SAVE_GPDR2, SLEEP_SAVE_GPDR3, - SLEEP_SAVE_GRER0, SLEEP_SAVE_GRER1, SLEEP_SAVE_GRER2, SLEEP_SAVE_GRER3, - SLEEP_SAVE_GFER0, SLEEP_SAVE_GFER1, SLEEP_SAVE_GFER2, SLEEP_SAVE_GFER3, SLEEP_SAVE_PGSR0, SLEEP_SAVE_PGSR1, SLEEP_SAVE_PGSR2, SLEEP_SAVE_PGSR3, SLEEP_SAVE_GAFR0_L, SLEEP_SAVE_GAFR0_U, @@ -208,10 +199,6 @@ enum { SLEEP_SAVE_START = 0, void pxa27x_cpu_pm_save(unsigned long *sleep_save) { - SAVE(GPLR0); SAVE(GPLR1); SAVE(GPLR2); SAVE(GPLR3); - SAVE(GPDR0); SAVE(GPDR1); SAVE(GPDR2); SAVE(GPDR3); - SAVE(GRER0); SAVE(GRER1); SAVE(GRER2); SAVE(GRER3); - SAVE(GFER0); SAVE(GFER1); SAVE(GFER2); SAVE(GFER3); SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2); SAVE(PGSR3); SAVE(GAFR0_L); SAVE(GAFR0_U); @@ -225,9 +212,6 @@ void pxa27x_cpu_pm_save(unsigned long *sleep_save) SAVE(CKEN); SAVE(PSTR); - - /* Clear GPIO transition detect bits */ - GEDR0 = GEDR0; GEDR1 = GEDR1; GEDR2 = GEDR2; GEDR3 = GEDR3; } void pxa27x_cpu_pm_restore(unsigned long *sleep_save) @@ -236,15 +220,10 @@ void pxa27x_cpu_pm_restore(unsigned long *sleep_save) PSPR = 0; /* restore registers */ - RESTORE_GPLEVEL(0); RESTORE_GPLEVEL(1); - RESTORE_GPLEVEL(2); RESTORE_GPLEVEL(3); - RESTORE(GPDR0); RESTORE(GPDR1); RESTORE(GPDR2); RESTORE(GPDR3); RESTORE(GAFR0_L); RESTORE(GAFR0_U); RESTORE(GAFR1_L); RESTORE(GAFR1_U); RESTORE(GAFR2_L); RESTORE(GAFR2_U); RESTORE(GAFR3_L); RESTORE(GAFR3_U); - RESTORE(GRER0); RESTORE(GRER1); RESTORE(GRER2); RESTORE(GRER3); - RESTORE(GFER0); RESTORE(GFER1); RESTORE(GFER2); RESTORE(GFER3); RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2); RESTORE(PGSR3); RESTORE(MDREFR); @@ -412,6 +391,8 @@ static struct sys_device pxa27x_sysdev[] = { }, { .id = 1, .cls = &pxa_irq_sysclass, + }, { + .cls = &pxa_gpio_sysclass, }, }; diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c index 3a7e8ccd70b..d0b2afd4368 100644 --- a/arch/arm/mach-pxa/pxa3xx.c +++ b/arch/arm/mach-pxa/pxa3xx.c @@ -460,6 +460,8 @@ static struct sys_device pxa3xx_sysdev[] = { }, { .id = 1, .cls = &pxa_irq_sysclass, + }, { + .cls = &pxa_gpio_sysclass, }, }; |