diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-pxa/pxa3xx.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-pxa/pxa3xx.c | 475 |
1 files changed, 0 insertions, 475 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-pxa/pxa3xx.c b/ANDROID_3.4.5/arch/arm/mach-pxa/pxa3xx.c deleted file mode 100644 index dffb7e81..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-pxa/pxa3xx.c +++ /dev/null @@ -1,475 +0,0 @@ -/* - * linux/arch/arm/mach-pxa/pxa3xx.c - * - * code specific to pxa3xx aka Monahans - * - * Copyright (C) 2006 Marvell International Ltd. - * - * 2007-09-02: eric miao <eric.miao@marvell.com> - * initial version - * - * 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/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/pm.h> -#include <linux/platform_device.h> -#include <linux/irq.h> -#include <linux/io.h> -#include <linux/syscore_ops.h> -#include <linux/i2c/pxa-i2c.h> - -#include <asm/mach/map.h> -#include <asm/suspend.h> -#include <mach/hardware.h> -#include <mach/pxa3xx-regs.h> -#include <mach/reset.h> -#include <mach/ohci.h> -#include <mach/pm.h> -#include <mach/dma.h> -#include <mach/smemc.h> -#include <mach/irqs.h> - -#include "generic.h" -#include "devices.h" -#include "clock.h" - -#define PECR_IE(n) ((1 << ((n) * 2)) << 28) -#define PECR_IS(n) ((1 << ((n) * 2)) << 29) - -static DEFINE_PXA3_CKEN(pxa3xx_ffuart, FFUART, 14857000, 1); -static DEFINE_PXA3_CKEN(pxa3xx_btuart, BTUART, 14857000, 1); -static DEFINE_PXA3_CKEN(pxa3xx_stuart, STUART, 14857000, 1); -static DEFINE_PXA3_CKEN(pxa3xx_i2c, I2C, 32842000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_udc, UDC, 48000000, 5); -static DEFINE_PXA3_CKEN(pxa3xx_usbh, USBH, 48000000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_u2d, USB2, 48000000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_keypad, KEYPAD, 32768, 0); -static DEFINE_PXA3_CKEN(pxa3xx_ssp1, SSP1, 13000000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_ssp2, SSP2, 13000000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_ssp3, SSP3, 13000000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_ssp4, SSP4, 13000000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_pwm0, PWM0, 13000000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_pwm1, PWM1, 13000000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_mmc1, MMC1, 19500000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_mmc2, MMC2, 19500000, 0); -static DEFINE_PXA3_CKEN(pxa3xx_gpio, GPIO, 13000000, 0); - -static DEFINE_CK(pxa3xx_lcd, LCD, &clk_pxa3xx_hsio_ops); -static DEFINE_CK(pxa3xx_smemc, SMC, &clk_pxa3xx_smemc_ops); -static DEFINE_CK(pxa3xx_camera, CAMERA, &clk_pxa3xx_hsio_ops); -static DEFINE_CK(pxa3xx_ac97, AC97, &clk_pxa3xx_ac97_ops); -static DEFINE_CLK(pxa3xx_pout, &clk_pxa3xx_pout_ops, 13000000, 70); - -static struct clk_lookup pxa3xx_clkregs[] = { - INIT_CLKREG(&clk_pxa3xx_pout, NULL, "CLK_POUT"), - /* Power I2C clock is always on */ - INIT_CLKREG(&clk_dummy, "pxa3xx-pwri2c.1", NULL), - INIT_CLKREG(&clk_pxa3xx_lcd, "pxa2xx-fb", NULL), - INIT_CLKREG(&clk_pxa3xx_camera, NULL, "CAMCLK"), - INIT_CLKREG(&clk_pxa3xx_ac97, NULL, "AC97CLK"), - INIT_CLKREG(&clk_pxa3xx_ffuart, "pxa2xx-uart.0", NULL), - INIT_CLKREG(&clk_pxa3xx_btuart, "pxa2xx-uart.1", NULL), - INIT_CLKREG(&clk_pxa3xx_stuart, "pxa2xx-uart.2", NULL), - INIT_CLKREG(&clk_pxa3xx_stuart, "pxa2xx-ir", "UARTCLK"), - INIT_CLKREG(&clk_pxa3xx_i2c, "pxa2xx-i2c.0", NULL), - INIT_CLKREG(&clk_pxa3xx_udc, "pxa27x-udc", NULL), - INIT_CLKREG(&clk_pxa3xx_usbh, "pxa27x-ohci", NULL), - INIT_CLKREG(&clk_pxa3xx_u2d, "pxa3xx-u2d", NULL), - INIT_CLKREG(&clk_pxa3xx_keypad, "pxa27x-keypad", NULL), - INIT_CLKREG(&clk_pxa3xx_ssp1, "pxa27x-ssp.0", NULL), - INIT_CLKREG(&clk_pxa3xx_ssp2, "pxa27x-ssp.1", NULL), - INIT_CLKREG(&clk_pxa3xx_ssp3, "pxa27x-ssp.2", NULL), - INIT_CLKREG(&clk_pxa3xx_ssp4, "pxa27x-ssp.3", NULL), - INIT_CLKREG(&clk_pxa3xx_pwm0, "pxa27x-pwm.0", NULL), - INIT_CLKREG(&clk_pxa3xx_pwm1, "pxa27x-pwm.1", NULL), - INIT_CLKREG(&clk_pxa3xx_mmc1, "pxa2xx-mci.0", NULL), - INIT_CLKREG(&clk_pxa3xx_mmc2, "pxa2xx-mci.1", NULL), - INIT_CLKREG(&clk_pxa3xx_smemc, "pxa2xx-pcmcia", NULL), - INIT_CLKREG(&clk_pxa3xx_gpio, "pxa-gpio", NULL), - INIT_CLKREG(&clk_dummy, "sa1100-rtc", NULL), -}; - -#ifdef CONFIG_PM - -#define ISRAM_START 0x5c000000 -#define ISRAM_SIZE SZ_256K - -static void __iomem *sram; -static unsigned long wakeup_src; - -/* - * Enter a standby mode (S0D1C2 or S0D2C2). Upon wakeup, the dynamic - * memory controller has to be reinitialised, so we place some code - * in the SRAM to perform this function. - * - * We disable FIQs across the standby - otherwise, we might receive a - * FIQ while the SDRAM is unavailable. - */ -static void pxa3xx_cpu_standby(unsigned int pwrmode) -{ - extern const char pm_enter_standby_start[], pm_enter_standby_end[]; - void (*fn)(unsigned int) = (void __force *)(sram + 0x8000); - - memcpy_toio(sram + 0x8000, pm_enter_standby_start, - pm_enter_standby_end - pm_enter_standby_start); - - AD2D0SR = ~0; - AD2D1SR = ~0; - AD2D0ER = wakeup_src; - AD2D1ER = 0; - ASCR = ASCR; - ARSR = ARSR; - - local_fiq_disable(); - fn(pwrmode); - local_fiq_enable(); - - AD2D0ER = 0; - AD2D1ER = 0; -} - -/* - * NOTE: currently, the OBM (OEM Boot Module) binary comes along with - * PXA3xx development kits assumes that the resuming process continues - * with the address stored within the first 4 bytes of SDRAM. The PSPR - * register is used privately by BootROM and OBM, and _must_ be set to - * 0x5c014000 for the moment. - */ -static void pxa3xx_cpu_pm_suspend(void) -{ - volatile unsigned long *p = (volatile void *)0xc0000000; - unsigned long saved_data = *p; -#ifndef CONFIG_IWMMXT - u64 acc0; - - asm volatile("mra %Q0, %R0, acc0" : "=r" (acc0)); -#endif - - extern int pxa3xx_finish_suspend(unsigned long); - - /* resuming from D2 requires the HSIO2/BOOT/TPM clocks enabled */ - CKENA |= (1 << CKEN_BOOT) | (1 << CKEN_TPM); - CKENB |= 1 << (CKEN_HSIO2 & 0x1f); - - /* clear and setup wakeup source */ - AD3SR = ~0; - AD3ER = wakeup_src; - ASCR = ASCR; - ARSR = ARSR; - - PCFR |= (1u << 13); /* L1_DIS */ - PCFR &= ~((1u << 12) | (1u << 1)); /* L0_EN | SL_ROD */ - - PSPR = 0x5c014000; - - /* overwrite with the resume address */ - *p = virt_to_phys(cpu_resume); - - cpu_suspend(0, pxa3xx_finish_suspend); - - *p = saved_data; - - AD3ER = 0; - -#ifndef CONFIG_IWMMXT - asm volatile("mar acc0, %Q0, %R0" : "=r" (acc0)); -#endif -} - -static void pxa3xx_cpu_pm_enter(suspend_state_t state) -{ - /* - * Don't sleep if no wakeup sources are defined - */ - if (wakeup_src == 0) { - printk(KERN_ERR "Not suspending: no wakeup sources\n"); - return; - } - - switch (state) { - case PM_SUSPEND_STANDBY: - pxa3xx_cpu_standby(PXA3xx_PM_S0D2C2); - break; - - case PM_SUSPEND_MEM: - pxa3xx_cpu_pm_suspend(); - break; - } -} - -static int pxa3xx_cpu_pm_valid(suspend_state_t state) -{ - return state == PM_SUSPEND_MEM || state == PM_SUSPEND_STANDBY; -} - -static struct pxa_cpu_pm_fns pxa3xx_cpu_pm_fns = { - .valid = pxa3xx_cpu_pm_valid, - .enter = pxa3xx_cpu_pm_enter, -}; - -static void __init pxa3xx_init_pm(void) -{ - sram = ioremap(ISRAM_START, ISRAM_SIZE); - if (!sram) { - printk(KERN_ERR "Unable to map ISRAM: disabling standby/suspend\n"); - return; - } - - /* - * Since we copy wakeup code into the SRAM, we need to ensure - * that it is preserved over the low power modes. Note: bit 8 - * is undocumented in the developer manual, but must be set. - */ - AD1R |= ADXR_L2 | ADXR_R0; - AD2R |= ADXR_L2 | ADXR_R0; - AD3R |= ADXR_L2 | ADXR_R0; - - /* - * Clear the resume enable registers. - */ - AD1D0ER = 0; - AD2D0ER = 0; - AD2D1ER = 0; - AD3ER = 0; - - pxa_cpu_pm_fns = &pxa3xx_cpu_pm_fns; -} - -static int pxa3xx_set_wake(struct irq_data *d, unsigned int on) -{ - unsigned long flags, mask = 0; - - switch (d->irq) { - case IRQ_SSP3: - mask = ADXER_MFP_WSSP3; - break; - case IRQ_MSL: - mask = ADXER_WMSL0; - break; - case IRQ_USBH2: - case IRQ_USBH1: - mask = ADXER_WUSBH; - break; - case IRQ_KEYPAD: - mask = ADXER_WKP; - break; - case IRQ_AC97: - mask = ADXER_MFP_WAC97; - break; - case IRQ_USIM: - mask = ADXER_WUSIM0; - break; - case IRQ_SSP2: - mask = ADXER_MFP_WSSP2; - break; - case IRQ_I2C: - mask = ADXER_MFP_WI2C; - break; - case IRQ_STUART: - mask = ADXER_MFP_WUART3; - break; - case IRQ_BTUART: - mask = ADXER_MFP_WUART2; - break; - case IRQ_FFUART: - mask = ADXER_MFP_WUART1; - break; - case IRQ_MMC: - mask = ADXER_MFP_WMMC1; - break; - case IRQ_SSP: - mask = ADXER_MFP_WSSP1; - break; - case IRQ_RTCAlrm: - mask = ADXER_WRTC; - break; - case IRQ_SSP4: - mask = ADXER_MFP_WSSP4; - break; - case IRQ_TSI: - mask = ADXER_WTSI; - break; - case IRQ_USIM2: - mask = ADXER_WUSIM1; - break; - case IRQ_MMC2: - mask = ADXER_MFP_WMMC2; - break; - case IRQ_NAND: - mask = ADXER_MFP_WFLASH; - break; - case IRQ_USB2: - mask = ADXER_WUSB2; - break; - case IRQ_WAKEUP0: - mask = ADXER_WEXTWAKE0; - break; - case IRQ_WAKEUP1: - mask = ADXER_WEXTWAKE1; - break; - case IRQ_MMC3: - mask = ADXER_MFP_GEN12; - break; - default: - return -EINVAL; - } - - local_irq_save(flags); - if (on) - wakeup_src |= mask; - else - wakeup_src &= ~mask; - local_irq_restore(flags); - - return 0; -} -#else -static inline void pxa3xx_init_pm(void) {} -#define pxa3xx_set_wake NULL -#endif - -static void pxa_ack_ext_wakeup(struct irq_data *d) -{ - PECR |= PECR_IS(d->irq - IRQ_WAKEUP0); -} - -static void pxa_mask_ext_wakeup(struct irq_data *d) -{ - pxa_mask_irq(d); - PECR &= ~PECR_IE(d->irq - IRQ_WAKEUP0); -} - -static void pxa_unmask_ext_wakeup(struct irq_data *d) -{ - pxa_unmask_irq(d); - PECR |= PECR_IE(d->irq - IRQ_WAKEUP0); -} - -static int pxa_set_ext_wakeup_type(struct irq_data *d, unsigned int flow_type) -{ - if (flow_type & IRQ_TYPE_EDGE_RISING) - PWER |= 1 << (d->irq - IRQ_WAKEUP0); - - if (flow_type & IRQ_TYPE_EDGE_FALLING) - PWER |= 1 << (d->irq - IRQ_WAKEUP0 + 2); - - return 0; -} - -static struct irq_chip pxa_ext_wakeup_chip = { - .name = "WAKEUP", - .irq_ack = pxa_ack_ext_wakeup, - .irq_mask = pxa_mask_ext_wakeup, - .irq_unmask = pxa_unmask_ext_wakeup, - .irq_set_type = pxa_set_ext_wakeup_type, -}; - -static void __init pxa_init_ext_wakeup_irq(int (*fn)(struct irq_data *, - unsigned int)) -{ - int irq; - - for (irq = IRQ_WAKEUP0; irq <= IRQ_WAKEUP1; irq++) { - irq_set_chip_and_handler(irq, &pxa_ext_wakeup_chip, - handle_edge_irq); - set_irq_flags(irq, IRQF_VALID); - } - - pxa_ext_wakeup_chip.irq_set_wake = fn; -} - -void __init pxa3xx_init_irq(void) -{ - /* enable CP6 access */ - u32 value; - __asm__ __volatile__("mrc p15, 0, %0, c15, c1, 0\n": "=r"(value)); - value |= (1 << 6); - __asm__ __volatile__("mcr p15, 0, %0, c15, c1, 0\n": :"r"(value)); - - pxa_init_irq(56, pxa3xx_set_wake); - pxa_init_ext_wakeup_irq(pxa3xx_set_wake); -} - -static struct map_desc pxa3xx_io_desc[] __initdata = { - { /* Mem Ctl */ - .virtual = (unsigned long)SMEMC_VIRT, - .pfn = __phys_to_pfn(PXA3XX_SMEMC_BASE), - .length = 0x00200000, - .type = MT_DEVICE - } -}; - -void __init pxa3xx_map_io(void) -{ - pxa_map_io(); - iotable_init(ARRAY_AND_SIZE(pxa3xx_io_desc)); - pxa3xx_get_clk_frequency_khz(1); -} - -/* - * device registration specific to PXA3xx. - */ - -void __init pxa3xx_set_i2c_power_info(struct i2c_pxa_platform_data *info) -{ - pxa_register_device(&pxa3xx_device_i2c_power, info); -} - -static struct platform_device *devices[] __initdata = { - &pxa_device_gpio, - &pxa27x_device_udc, - &pxa_device_pmu, - &pxa_device_i2s, - &pxa_device_asoc_ssp1, - &pxa_device_asoc_ssp2, - &pxa_device_asoc_ssp3, - &pxa_device_asoc_ssp4, - &pxa_device_asoc_platform, - &sa1100_device_rtc, - &pxa_device_rtc, - &pxa27x_device_ssp1, - &pxa27x_device_ssp2, - &pxa27x_device_ssp3, - &pxa3xx_device_ssp4, - &pxa27x_device_pwm0, - &pxa27x_device_pwm1, -}; - -static int __init pxa3xx_init(void) -{ - int ret = 0; - - if (cpu_is_pxa3xx()) { - - reset_status = ARSR; - - /* - * clear RDH bit every time after reset - * - * Note: the last 3 bits DxS are write-1-to-clear so carefully - * preserve them here in case they will be referenced later - */ - ASCR &= ~(ASCR_RDH | ASCR_D1S | ASCR_D2S | ASCR_D3S); - - clkdev_add_table(pxa3xx_clkregs, ARRAY_SIZE(pxa3xx_clkregs)); - - if ((ret = pxa_init_dma(IRQ_DMA, 32))) - return ret; - - pxa3xx_init_pm(); - - register_syscore_ops(&pxa_irq_syscore_ops); - register_syscore_ops(&pxa3xx_mfp_syscore_ops); - register_syscore_ops(&pxa3xx_clock_syscore_ops); - - ret = platform_add_devices(devices, ARRAY_SIZE(devices)); - } - - return ret; -} - -postcore_initcall(pxa3xx_init); |