X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=arch%2Farm%2Fmach-pxa%2Fpxa25x.c;h=9732d5d9466b1381fdb1b6ce416403af4215675d;hp=f36ca448338e380ff76cef2764193a7d83e4949c;hb=ef3f2de2b5496f721b12f21a157e19eac816394b;hpb=b91cba52e9b7b3f1c0037908a192d93a869ca9e5 diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index f36ca448338e..9732d5d9466b 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -20,7 +20,7 @@ #include #include #include -#include +#include #include #include @@ -30,6 +30,7 @@ #include "generic.h" #include "devices.h" +#include "clock.h" /* * Various clock factors driven by the CCCR register. @@ -53,7 +54,7 @@ static unsigned char N2_clk_mult[8] = { 0, 0, 2, 3, 4, 0, 6, 0 }; * We assume these values have been applied via a fcs. * If info is not 0 we also display the current settings. */ -unsigned int get_clk_frequency_khz(int info) +unsigned int pxa25x_get_clk_frequency_khz(int info) { unsigned long cccr, turbo; unsigned int l, L, m, M, n2, N; @@ -86,69 +87,216 @@ unsigned int get_clk_frequency_khz(int info) return (turbo & 1) ? (N/1000) : (M/1000); } -EXPORT_SYMBOL(get_clk_frequency_khz); - /* * Return the current memory clock frequency in units of 10kHz */ -unsigned int get_memclk_frequency_10khz(void) +unsigned int pxa25x_get_memclk_frequency_10khz(void) { return L_clk_mult[(CCCR >> 0) & 0x1f] * BASE_CLK / 10000; } -EXPORT_SYMBOL(get_memclk_frequency_10khz); +static unsigned long clk_pxa25x_lcd_getrate(struct clk *clk) +{ + return pxa25x_get_memclk_frequency_10khz() * 10000; +} + +static const struct clkops clk_pxa25x_lcd_ops = { + .enable = clk_cken_enable, + .disable = clk_cken_disable, + .getrate = clk_pxa25x_lcd_getrate, +}; + +/* + * 3.6864MHz -> OST, GPIO, SSP, PWM, PLLs (95.842MHz, 147.456MHz) + * 95.842MHz -> MMC 19.169MHz, I2C 31.949MHz, FICP 47.923MHz, USB 47.923MHz + * 147.456MHz -> UART 14.7456MHz, AC97 12.288MHz, I2S 5.672MHz (allegedly) + */ +static struct clk pxa25x_clks[] = { + INIT_CK("LCDCLK", LCD, &clk_pxa25x_lcd_ops, &pxa_device_fb.dev), + INIT_CKEN("UARTCLK", FFUART, 14745600, 1, &pxa_device_ffuart.dev), + INIT_CKEN("UARTCLK", BTUART, 14745600, 1, &pxa_device_btuart.dev), + INIT_CKEN("UARTCLK", BTUART, 14745600, 1, &pxa_device_btuart.dev), + INIT_CKEN("UARTCLK", STUART, 14745600, 1, NULL), + INIT_CKEN("UDCCLK", USB, 47923000, 5, &pxa_device_udc.dev), + INIT_CKEN("MMCCLK", MMC, 19169000, 0, &pxa_device_mci.dev), + INIT_CKEN("I2CCLK", I2C, 31949000, 0, &pxa_device_i2c.dev), + /* + INIT_CKEN("PWMCLK", PWM0, 3686400, 0, NULL), + INIT_CKEN("PWMCLK", PWM0, 3686400, 0, NULL), + INIT_CKEN("SSPCLK", SSP, 3686400, 0, NULL), + INIT_CKEN("I2SCLK", I2S, 14745600, 0, NULL), + INIT_CKEN("NSSPCLK", NSSP, 3686400, 0, NULL), + */ + INIT_CKEN("FICPCLK", FICP, 47923000, 0, NULL), +}; + +#ifdef CONFIG_PM + +#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) /* - * Return the current LCD clock frequency in units of 10kHz + * 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. */ -unsigned int get_lcdclk_frequency_10khz(void) +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, + SLEEP_SAVE_GAFR1_L, SLEEP_SAVE_GAFR1_U, + SLEEP_SAVE_GAFR2_L, SLEEP_SAVE_GAFR2_U, + + SLEEP_SAVE_PSTR, + + SLEEP_SAVE_ICMR, + SLEEP_SAVE_CKEN, + + SLEEP_SAVE_SIZE +}; + + +static void pxa25x_cpu_pm_save(unsigned long *sleep_save) { - return get_memclk_frequency_10khz(); -} + 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); -EXPORT_SYMBOL(get_lcdclk_frequency_10khz); + SAVE(GAFR0_L); SAVE(GAFR0_U); + SAVE(GAFR1_L); SAVE(GAFR1_U); + SAVE(GAFR2_L); SAVE(GAFR2_U); -#ifdef CONFIG_PM + SAVE(ICMR); ICMR = 0; + SAVE(CKEN); + SAVE(PSTR); + + /* Clear GPIO transition detect bits */ + GEDR0 = GEDR0; GEDR1 = GEDR1; GEDR2 = GEDR2; +} -void pxa_cpu_pm_enter(suspend_state_t state) +static void pxa25x_cpu_pm_restore(unsigned long *sleep_save) { - extern void pxa_cpu_suspend(unsigned int); - extern void pxa_cpu_resume(void); + /* 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(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; + + RESTORE(CKEN); + + ICLR = 0; + ICCR = 1; + RESTORE(ICMR); + RESTORE(PSTR); +} +static void pxa25x_cpu_pm_enter(suspend_state_t state) +{ CKEN = 0; switch (state) { case PM_SUSPEND_MEM: /* set resume return address */ PSPR = virt_to_phys(pxa_cpu_resume); - pxa_cpu_suspend(PWRMODE_SLEEP); + pxa25x_cpu_suspend(PWRMODE_SLEEP); break; } } -static struct pm_ops pxa25x_pm_ops = { - .enter = pxa_pm_enter, - .valid = pm_valid_only_mem, +static struct pxa_cpu_pm_fns pxa25x_cpu_pm_fns = { + .save_size = SLEEP_SAVE_SIZE, + .valid = suspend_valid_only_mem, + .save = pxa25x_cpu_pm_save, + .restore = pxa25x_cpu_pm_restore, + .enter = pxa25x_cpu_pm_enter, }; + +static void __init pxa25x_init_pm(void) +{ + pxa_cpu_pm_fns = &pxa25x_cpu_pm_fns; +} #endif +/* PXA25x: supports wakeup from GPIO0..GPIO15 and RTC alarm + */ + +static int pxa25x_set_wake(unsigned int irq, unsigned int on) +{ + int gpio = IRQ_TO_GPIO(irq); + uint32_t gpio_bit, mask = 0; + + if (gpio >= 0 && gpio <= 15) { + gpio_bit = GPIO_bit(gpio); + mask = gpio_bit; + if (on) { + if (GRER(gpio) | gpio_bit) + PRER |= gpio_bit; + else + PRER &= ~gpio_bit; + + if (GFER(gpio) | gpio_bit) + PFER |= gpio_bit; + else + PFER &= ~gpio_bit; + } + goto set_pwer; + } + + if (irq == IRQ_RTCAlrm) { + mask = PWER_RTC; + goto set_pwer; + } + + return -EINVAL; + +set_pwer: + if (on) + PWER |= mask; + else + PWER &=~mask; + + return 0; +} + void __init pxa25x_init_irq(void) { pxa_init_irq_low(); pxa_init_irq_gpio(85); + pxa_init_irq_set_wake(pxa25x_set_wake); } static struct platform_device *pxa25x_devices[] __initdata = { - &pxamci_device, - &pxaudc_device, - &pxafb_device, - &ffuart_device, - &btuart_device, - &stuart_device, - &pxai2c_device, - &pxai2s_device, - &pxaficp_device, - &pxartc_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, }; static int __init pxa25x_init(void) @@ -156,17 +304,19 @@ static int __init pxa25x_init(void) int ret = 0; if (cpu_is_pxa21x() || cpu_is_pxa25x()) { + clks_register(pxa25x_clks, ARRAY_SIZE(pxa25x_clks)); + if ((ret = pxa_init_dma(16))) return ret; #ifdef CONFIG_PM - pm_set_ops(&pxa25x_pm_ops); + pxa25x_init_pm(); #endif ret = platform_add_devices(pxa25x_devices, ARRAY_SIZE(pxa25x_devices)); } /* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */ if (cpu_is_pxa25x()) - ret = platform_device_register(&hwuart_device); + ret = platform_device_register(&pxa_device_hwuart); return ret; }