diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-pxa/pxa27x.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-pxa/pxa27x.c | 471 |
1 files changed, 0 insertions, 471 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-pxa/pxa27x.c b/ANDROID_3.4.5/arch/arm/mach-pxa/pxa27x.c deleted file mode 100644 index 4726c246..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-pxa/pxa27x.c +++ /dev/null @@ -1,471 +0,0 @@ -/* - * linux/arch/arm/mach-pxa/pxa27x.c - * - * Author: Nicolas Pitre - * Created: Nov 05, 2002 - * Copyright: MontaVista Software Inc. - * - * Code specific to PXA27x aka Bulverde. - * - * 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. - */ -#include <linux/gpio.h> -#include <linux/gpio-pxa.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/suspend.h> -#include <linux/platform_device.h> -#include <linux/syscore_ops.h> -#include <linux/io.h> -#include <linux/irq.h> -#include <linux/i2c/pxa-i2c.h> - -#include <asm/mach/map.h> -#include <mach/hardware.h> -#include <asm/irq.h> -#include <asm/suspend.h> -#include <mach/irqs.h> -#include <mach/pxa27x.h> -#include <mach/reset.h> -#include <mach/ohci.h> -#include <mach/pm.h> -#include <mach/dma.h> -#include <mach/smemc.h> - -#include "generic.h" -#include "devices.h" -#include "clock.h" - -void pxa27x_clear_otgph(void) -{ - if (cpu_is_pxa27x() && (PSSR & PSSR_OTGPH)) - PSSR |= PSSR_OTGPH; -} -EXPORT_SYMBOL(pxa27x_clear_otgph); - -static unsigned long ac97_reset_config[] = { - GPIO113_GPIO, - GPIO113_AC97_nRESET, - GPIO95_GPIO, - GPIO95_AC97_nRESET, -}; - -void pxa27x_assert_ac97reset(int reset_gpio, int on) -{ - if (reset_gpio == 113) - pxa2xx_mfp_config(on ? &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); -} -EXPORT_SYMBOL_GPL(pxa27x_assert_ac97reset); - -/* Crystal clock: 13MHz */ -#define BASE_CLK 13000000 - -/* - * Get the clock frequency as reflected by CCSR and the turbo flag. - * We assume these values have been applied via a fcs. - * If info is not 0 we also display the current settings. - */ -unsigned int pxa27x_get_clk_frequency_khz(int info) -{ - unsigned long ccsr, clkcfg; - unsigned int l, L, m, M, n2, N, S; - int cccr_a, t, ht, b; - - ccsr = CCSR; - cccr_a = CCCR & (1 << 25); - - /* Read clkcfg register: it has turbo, b, half-turbo (and f) */ - asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (clkcfg) ); - t = clkcfg & (1 << 0); - ht = clkcfg & (1 << 2); - b = clkcfg & (1 << 3); - - l = ccsr & 0x1f; - n2 = (ccsr>>7) & 0xf; - m = (l <= 10) ? 1 : (l <= 20) ? 2 : 4; - - L = l * BASE_CLK; - N = (L * n2) / 2; - M = (!cccr_a) ? (L/m) : ((b) ? L : (L/2)); - S = (b) ? L : (L/2); - - if (info) { - printk( KERN_INFO "Run Mode clock: %d.%02dMHz (*%d)\n", - L / 1000000, (L % 1000000) / 10000, l ); - printk( KERN_INFO "Turbo Mode clock: %d.%02dMHz (*%d.%d, %sactive)\n", - N / 1000000, (N % 1000000)/10000, n2 / 2, (n2 % 2)*5, - (t) ? "" : "in" ); - printk( KERN_INFO "Memory clock: %d.%02dMHz (/%d)\n", - M / 1000000, (M % 1000000) / 10000, m ); - printk( KERN_INFO "System bus clock: %d.%02dMHz \n", - S / 1000000, (S % 1000000) / 10000 ); - } - - return (t) ? (N/1000) : (L/1000); -} - -/* - * Return the current mem clock frequency as reflected by CCCR[A], B, and L - */ -static unsigned long clk_pxa27x_mem_getrate(struct clk *clk) -{ - unsigned long ccsr, clkcfg; - unsigned int l, L, m, M; - int cccr_a, b; - - ccsr = CCSR; - cccr_a = CCCR & (1 << 25); - - /* Read clkcfg register: it has turbo, b, half-turbo (and f) */ - asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (clkcfg) ); - b = clkcfg & (1 << 3); - - l = ccsr & 0x1f; - m = (l <= 10) ? 1 : (l <= 20) ? 2 : 4; - - L = l * BASE_CLK; - M = (!cccr_a) ? (L/m) : ((b) ? L : (L/2)); - - return M; -} - -static const struct clkops clk_pxa27x_mem_ops = { - .enable = clk_dummy_enable, - .disable = clk_dummy_disable, - .getrate = clk_pxa27x_mem_getrate, -}; - -/* - * Return the current LCD clock frequency in units of 10kHz as - */ -static unsigned int pxa27x_get_lcdclk_frequency_10khz(void) -{ - unsigned long ccsr; - unsigned int l, L, k, K; - - ccsr = CCSR; - - l = ccsr & 0x1f; - k = (l <= 7) ? 1 : (l <= 16) ? 2 : 4; - - L = l * BASE_CLK; - K = L / k; - - return (K / 10000); -} - -static unsigned long clk_pxa27x_lcd_getrate(struct clk *clk) -{ - return pxa27x_get_lcdclk_frequency_10khz() * 10000; -} - -static const struct clkops clk_pxa27x_lcd_ops = { - .enable = clk_pxa2xx_cken_enable, - .disable = clk_pxa2xx_cken_disable, - .getrate = clk_pxa27x_lcd_getrate, -}; - -static DEFINE_PXA2_CKEN(pxa27x_ffuart, FFUART, 14857000, 1); -static DEFINE_PXA2_CKEN(pxa27x_btuart, BTUART, 14857000, 1); -static DEFINE_PXA2_CKEN(pxa27x_stuart, STUART, 14857000, 1); -static DEFINE_PXA2_CKEN(pxa27x_i2s, I2S, 14682000, 0); -static DEFINE_PXA2_CKEN(pxa27x_i2c, I2C, 32842000, 0); -static DEFINE_PXA2_CKEN(pxa27x_usb, USB, 48000000, 5); -static DEFINE_PXA2_CKEN(pxa27x_mmc, MMC, 19500000, 0); -static DEFINE_PXA2_CKEN(pxa27x_ficp, FICP, 48000000, 0); -static DEFINE_PXA2_CKEN(pxa27x_usbhost, USBHOST, 48000000, 0); -static DEFINE_PXA2_CKEN(pxa27x_pwri2c, PWRI2C, 13000000, 0); -static DEFINE_PXA2_CKEN(pxa27x_keypad, KEYPAD, 32768, 0); -static DEFINE_PXA2_CKEN(pxa27x_ssp1, SSP1, 13000000, 0); -static DEFINE_PXA2_CKEN(pxa27x_ssp2, SSP2, 13000000, 0); -static DEFINE_PXA2_CKEN(pxa27x_ssp3, SSP3, 13000000, 0); -static DEFINE_PXA2_CKEN(pxa27x_pwm0, PWM0, 13000000, 0); -static DEFINE_PXA2_CKEN(pxa27x_pwm1, PWM1, 13000000, 0); -static DEFINE_PXA2_CKEN(pxa27x_ac97, AC97, 24576000, 0); -static DEFINE_PXA2_CKEN(pxa27x_ac97conf, AC97CONF, 24576000, 0); -static DEFINE_PXA2_CKEN(pxa27x_msl, MSL, 48000000, 0); -static DEFINE_PXA2_CKEN(pxa27x_usim, USIM, 48000000, 0); -static DEFINE_PXA2_CKEN(pxa27x_memstk, MEMSTK, 19500000, 0); -static DEFINE_PXA2_CKEN(pxa27x_im, IM, 0, 0); -static DEFINE_PXA2_CKEN(pxa27x_memc, MEMC, 0, 0); - -static DEFINE_CK(pxa27x_lcd, LCD, &clk_pxa27x_lcd_ops); -static DEFINE_CK(pxa27x_camera, CAMERA, &clk_pxa27x_lcd_ops); -static DEFINE_CLK(pxa27x_mem, &clk_pxa27x_mem_ops, 0, 0); - -static struct clk_lookup pxa27x_clkregs[] = { - INIT_CLKREG(&clk_pxa27x_lcd, "pxa2xx-fb", NULL), - INIT_CLKREG(&clk_pxa27x_camera, "pxa27x-camera.0", NULL), - INIT_CLKREG(&clk_pxa27x_ffuart, "pxa2xx-uart.0", NULL), - INIT_CLKREG(&clk_pxa27x_btuart, "pxa2xx-uart.1", NULL), - INIT_CLKREG(&clk_pxa27x_stuart, "pxa2xx-uart.2", NULL), - INIT_CLKREG(&clk_pxa27x_i2s, "pxa2xx-i2s", NULL), - INIT_CLKREG(&clk_pxa27x_i2c, "pxa2xx-i2c.0", NULL), - INIT_CLKREG(&clk_pxa27x_usb, "pxa27x-udc", NULL), - INIT_CLKREG(&clk_pxa27x_mmc, "pxa2xx-mci.0", NULL), - INIT_CLKREG(&clk_pxa27x_stuart, "pxa2xx-ir", "UARTCLK"), - INIT_CLKREG(&clk_pxa27x_ficp, "pxa2xx-ir", "FICPCLK"), - INIT_CLKREG(&clk_pxa27x_usbhost, "pxa27x-ohci", NULL), - INIT_CLKREG(&clk_pxa27x_pwri2c, "pxa2xx-i2c.1", NULL), - INIT_CLKREG(&clk_pxa27x_keypad, "pxa27x-keypad", NULL), - INIT_CLKREG(&clk_pxa27x_ssp1, "pxa27x-ssp.0", NULL), - INIT_CLKREG(&clk_pxa27x_ssp2, "pxa27x-ssp.1", NULL), - INIT_CLKREG(&clk_pxa27x_ssp3, "pxa27x-ssp.2", NULL), - INIT_CLKREG(&clk_pxa27x_pwm0, "pxa27x-pwm.0", NULL), - INIT_CLKREG(&clk_pxa27x_pwm1, "pxa27x-pwm.1", NULL), - INIT_CLKREG(&clk_pxa27x_ac97, NULL, "AC97CLK"), - INIT_CLKREG(&clk_pxa27x_ac97conf, NULL, "AC97CONFCLK"), - INIT_CLKREG(&clk_pxa27x_msl, NULL, "MSLCLK"), - INIT_CLKREG(&clk_pxa27x_usim, NULL, "USIMCLK"), - INIT_CLKREG(&clk_pxa27x_memstk, NULL, "MSTKCLK"), - 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, "pxa-gpio", NULL), -}; - -#ifdef CONFIG_PM - -#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x -#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x] - -/* - * allow platforms to override default PWRMODE setting used for PM_SUSPEND_MEM - */ -static unsigned int pwrmode = PWRMODE_SLEEP; - -int __init pxa27x_set_pwrmode(unsigned int mode) -{ - switch (mode) { - case PWRMODE_SLEEP: - case PWRMODE_DEEPSLEEP: - pwrmode = mode; - return 0; - } - - return -EINVAL; -} - -/* - * 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_PSTR, - SLEEP_SAVE_MDREFR, - SLEEP_SAVE_PCFR, - SLEEP_SAVE_COUNT -}; - -void pxa27x_cpu_pm_save(unsigned long *sleep_save) -{ - sleep_save[SLEEP_SAVE_MDREFR] = __raw_readl(MDREFR); - SAVE(PCFR); - - SAVE(PSTR); -} - -void pxa27x_cpu_pm_restore(unsigned long *sleep_save) -{ - __raw_writel(sleep_save[SLEEP_SAVE_MDREFR], MDREFR); - RESTORE(PCFR); - - PSSR = PSSR_RDH | PSSR_PH; - - RESTORE(PSTR); -} - -void pxa27x_cpu_pm_enter(suspend_state_t state) -{ - extern void pxa_cpu_standby(void); -#ifndef CONFIG_IWMMXT - u64 acc0; - - asm volatile("mra %Q0, %R0, acc0" : "=r" (acc0)); -#endif - - /* ensure voltage-change sequencer not initiated, which hangs */ - PCFR &= ~PCFR_FVC; - - /* Clear edge-detect status register. */ - PEDR = 0xDF12FE1B; - - /* Clear reset status */ - RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR; - - switch (state) { - case PM_SUSPEND_STANDBY: - pxa_cpu_standby(); - break; - case PM_SUSPEND_MEM: - cpu_suspend(pwrmode, pxa27x_finish_suspend); -#ifndef CONFIG_IWMMXT - asm volatile("mar acc0, %Q0, %R0" : "=r" (acc0)); -#endif - break; - } -} - -static int pxa27x_cpu_pm_valid(suspend_state_t state) -{ - return state == PM_SUSPEND_MEM || state == PM_SUSPEND_STANDBY; -} - -static int pxa27x_cpu_pm_prepare(void) -{ - /* set resume return address */ - PSPR = virt_to_phys(cpu_resume); - return 0; -} - -static void pxa27x_cpu_pm_finish(void) -{ - /* ensure not to come back here if it wasn't intended */ - PSPR = 0; -} - -static struct pxa_cpu_pm_fns pxa27x_cpu_pm_fns = { - .save_count = SLEEP_SAVE_COUNT, - .save = pxa27x_cpu_pm_save, - .restore = pxa27x_cpu_pm_restore, - .valid = pxa27x_cpu_pm_valid, - .enter = pxa27x_cpu_pm_enter, - .prepare = pxa27x_cpu_pm_prepare, - .finish = pxa27x_cpu_pm_finish, -}; - -static void __init pxa27x_init_pm(void) -{ - pxa_cpu_pm_fns = &pxa27x_cpu_pm_fns; -} -#else -static inline void pxa27x_init_pm(void) {} -#endif - -/* PXA27x: Various gpios can issue wakeup events. This logic only - * handles the simple cases, not the WEMUX2 and WEMUX3 options - */ -static int pxa27x_set_wake(struct irq_data *d, unsigned int on) -{ - int gpio = pxa_irq_to_gpio(d->irq); - uint32_t mask; - - if (gpio >= 0 && gpio < 128) - return gpio_set_wake(gpio, on); - - if (d->irq == IRQ_KEYPAD) - return keypad_set_wake(on); - - switch (d->irq) { - case IRQ_RTCAlrm: - mask = PWER_RTC; - break; - case IRQ_USB: - mask = 1u << 26; - break; - default: - return -EINVAL; - } - - if (on) - PWER |= mask; - else - PWER &=~mask; - - return 0; -} - -void __init pxa27x_init_irq(void) -{ - pxa_init_irq(34, pxa27x_set_wake); -} - -static struct map_desc pxa27x_io_desc[] __initdata = { - { /* Mem Ctl */ - .virtual = (unsigned long)SMEMC_VIRT, - .pfn = __phys_to_pfn(PXA2XX_SMEMC_BASE), - .length = 0x00200000, - .type = MT_DEVICE - }, { /* IMem ctl */ - .virtual = 0xfe000000, - .pfn = __phys_to_pfn(0x58000000), - .length = 0x00100000, - .type = MT_DEVICE - }, -}; - -void __init pxa27x_map_io(void) -{ - pxa_map_io(); - iotable_init(ARRAY_AND_SIZE(pxa27x_io_desc)); - pxa27x_get_clk_frequency_khz(1); -} - -/* - * device registration specific to PXA27x. - */ -void __init pxa27x_set_i2c_power_info(struct i2c_pxa_platform_data *info) -{ - local_irq_disable(); - PCFR |= PCFR_PI2CEN; - local_irq_enable(); - pxa_register_device(&pxa27x_device_i2c_power, info); -} - -static struct pxa_gpio_platform_data pxa27x_gpio_info __initdata = { - .gpio_set_wake = gpio_set_wake, -}; - -static struct platform_device *devices[] __initdata = { - &pxa27x_device_udc, - &pxa_device_pmu, - &pxa_device_i2s, - &pxa_device_asoc_ssp1, - &pxa_device_asoc_ssp2, - &pxa_device_asoc_ssp3, - &pxa_device_asoc_platform, - &sa1100_device_rtc, - &pxa_device_rtc, - &pxa27x_device_ssp1, - &pxa27x_device_ssp2, - &pxa27x_device_ssp3, - &pxa27x_device_pwm0, - &pxa27x_device_pwm1, -}; - -static int __init pxa27x_init(void) -{ - int ret = 0; - - if (cpu_is_pxa27x()) { - - reset_status = RCSR; - - clkdev_add_table(pxa27x_clkregs, ARRAY_SIZE(pxa27x_clkregs)); - - if ((ret = pxa_init_dma(IRQ_DMA, 32))) - return ret; - - pxa27x_init_pm(); - - register_syscore_ops(&pxa_irq_syscore_ops); - register_syscore_ops(&pxa2xx_mfp_syscore_ops); - register_syscore_ops(&pxa2xx_clock_syscore_ops); - - pxa_register_device(&pxa_device_gpio, &pxa27x_gpio_info); - ret = platform_add_devices(devices, ARRAY_SIZE(devices)); - } - - return ret; -} - -postcore_initcall(pxa27x_init); |