diff options
Diffstat (limited to 'arch/arm/mach-pxa/pxa27x.c')
| -rw-r--r-- | arch/arm/mach-pxa/pxa27x.c | 151 |
1 files changed, 126 insertions, 25 deletions
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index aa5bb02c897b..203371ab19db 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -126,14 +126,107 @@ EXPORT_SYMBOL(get_lcdclk_frequency_10khz); #ifdef CONFIG_PM -void pxa_cpu_pm_enter(suspend_state_t state) +#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 + * with the stack pointer in sleep.S. + */ +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, + SLEEP_SAVE_GAFR1_L, SLEEP_SAVE_GAFR1_U, + SLEEP_SAVE_GAFR2_L, SLEEP_SAVE_GAFR2_U, + SLEEP_SAVE_GAFR3_L, SLEEP_SAVE_GAFR3_U, + + SLEEP_SAVE_PSTR, + + SLEEP_SAVE_ICMR, + SLEEP_SAVE_CKEN, + + SLEEP_SAVE_MDREFR, + SLEEP_SAVE_PWER, SLEEP_SAVE_PCFR, SLEEP_SAVE_PRER, + SLEEP_SAVE_PFER, SLEEP_SAVE_PKWR, + + SLEEP_SAVE_SIZE +}; + +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); + SAVE(GAFR1_L); SAVE(GAFR1_U); + SAVE(GAFR2_L); SAVE(GAFR2_U); + SAVE(GAFR3_L); SAVE(GAFR3_U); + + SAVE(MDREFR); + SAVE(PWER); SAVE(PCFR); SAVE(PRER); + SAVE(PFER); SAVE(PKWR); + + SAVE(ICMR); ICMR = 0; + 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) +{ + /* ensure not to come back here if it wasn't intended */ + 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); + RESTORE(PWER); RESTORE(PCFR); RESTORE(PRER); + RESTORE(PFER); RESTORE(PKWR); + + PSSR = PSSR_RDH | PSSR_PH; + + RESTORE(CKEN); + + ICLR = 0; + ICCR = 1; + RESTORE(ICMR); + RESTORE(PSTR); +} + +void pxa27x_cpu_pm_enter(suspend_state_t state) { extern void pxa_cpu_standby(void); - extern void pxa_cpu_suspend(unsigned int); - extern void pxa_cpu_resume(void); if (state == PM_SUSPEND_STANDBY) - CKEN = (1 << CKEN_MEMC) | (1 << CKEN_OSTIMER) | (1 << CKEN_LCD) | (1 << CKEN_PWM0); + CKEN = (1 << CKEN_MEMC) | (1 << CKEN_OSTIMER) | + (1 << CKEN_LCD) | (1 << CKEN_PWM0); else CKEN = (1 << CKEN_MEMC) | (1 << CKEN_OSTIMER); @@ -150,20 +243,28 @@ void pxa_cpu_pm_enter(suspend_state_t state) case PM_SUSPEND_MEM: /* set resume return address */ PSPR = virt_to_phys(pxa_cpu_resume); - pxa_cpu_suspend(PWRMODE_SLEEP); + pxa27x_cpu_suspend(PWRMODE_SLEEP); break; } } -static int pxa27x_pm_valid(suspend_state_t state) +static int pxa27x_cpu_pm_valid(suspend_state_t state) { return state == PM_SUSPEND_MEM || state == PM_SUSPEND_STANDBY; } -static struct pm_ops pxa27x_pm_ops = { - .enter = pxa_pm_enter, - .valid = pxa27x_pm_valid, +static struct pxa_cpu_pm_fns pxa27x_cpu_pm_fns = { + .save_size = SLEEP_SAVE_SIZE, + .save = pxa27x_cpu_pm_save, + .restore = pxa27x_cpu_pm_restore, + .valid = pxa27x_cpu_pm_valid, + .enter = pxa27x_cpu_pm_enter, }; + +static void __init pxa27x_init_pm(void) +{ + pxa_cpu_pm_fns = &pxa27x_cpu_pm_fns; +} #endif /* @@ -185,7 +286,7 @@ static struct resource pxa27x_ohci_resources[] = { }, }; -static struct platform_device pxaohci_device = { +static struct platform_device pxa27x_device_ohci = { .name = "pxa27x-ohci", .id = -1, .dev = { @@ -198,7 +299,7 @@ static struct platform_device pxaohci_device = { void __init pxa_set_ohci_info(struct pxaohci_platform_data *info) { - pxaohci_device.dev.platform_data = info; + pxa27x_device_ohci.dev.platform_data = info; } static struct resource i2c_power_resources[] = { @@ -213,7 +314,7 @@ static struct resource i2c_power_resources[] = { }, }; -static struct platform_device pxai2c_power_device = { +static struct platform_device pxa27x_device_i2c_power = { .name = "pxa2xx-i2c", .id = 1, .resource = i2c_power_resources, @@ -221,18 +322,18 @@ static struct platform_device pxai2c_power_device = { }; static struct platform_device *devices[] __initdata = { - &pxamci_device, - &pxaudc_device, - &pxafb_device, - &ffuart_device, - &btuart_device, - &stuart_device, - &pxai2c_device, - &pxai2c_power_device, - &pxai2s_device, - &pxaficp_device, - &pxartc_device, - &pxaohci_device, + &pxa_device_mci, + &pxa_device_udc, + &pxa_device_fb, + &pxa_device_ffuart, + &pxa_device_btuart, + &pxa_device_stuart, + &pxa_device_i2c, + &pxa_device_i2s, + &pxa_device_ficp, + &pxa_device_rtc, + &pxa27x_device_i2c_power, + &pxa27x_device_ohci, }; void __init pxa27x_init_irq(void) @@ -249,7 +350,7 @@ static int __init pxa27x_init(void) if ((ret = pxa_init_dma(32))) return ret; #ifdef CONFIG_PM - pm_set_ops(&pxa27x_pm_ops); + pxa27x_init_pm(); #endif ret = platform_add_devices(devices, ARRAY_SIZE(devices)); } |