[deliverable/linux.git] / arch / arm / mach-pxa / pxa3xx.c

/*
 * 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/sysdev.h>
#include <linux/i2c/pxa-i2c.h>

#include <asm/mach/map.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <mach/pxa3xx-regs.h>
#include <mach/reset.h>
#include <mach/ohci.h>
#include <mach/pm.h>
#include <mach/dma.h>
#include <mach/regs-intc.h>
#include <mach/smemc.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_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),
};

#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;

	extern void pxa3xx_cpu_suspend(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);

	pxa3xx_cpu_suspend(PLAT_PHYS_OFFSET - PAGE_OFFSET);

	*p = saved_data;

	AD3ER = 0;
}

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)
{
	ICMR2 &= ~(1 << ((d->irq - PXA_IRQ(0)) & 0x1f));
	PECR &= ~PECR_IE(d->irq - IRQ_WAKEUP0);
}

static void pxa_unmask_ext_wakeup(struct irq_data *d)
{
	ICMR2 |= 1 << ((d->irq - PXA_IRQ(0)) & 0x1f);
	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(set_wake_t fn)
{
	int irq;

	for (irq = IRQ_WAKEUP0; irq <= IRQ_WAKEUP1; irq++) {
		set_irq_chip(irq, &pxa_ext_wakeup_chip);
		set_irq_handler(irq, 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);
	pxa_init_gpio(IRQ_GPIO_2_x, 2, 127, NULL);
}

static struct map_desc pxa3xx_io_desc[] __initdata = {
	{	/* Mem Ctl */
		.virtual	= 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 = {
	&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 struct sys_device pxa3xx_sysdev[] = {
	{
		.cls	= &pxa_irq_sysclass,
	}, {
		.cls	= &pxa3xx_mfp_sysclass,
	}, {
		.cls	= &pxa_gpio_sysclass,
	}, {
		.cls	= &pxa3xx_clock_sysclass,
	}
};

static int __init pxa3xx_init(void)
{
	int i, 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();

		for (i = 0; i < ARRAY_SIZE(pxa3xx_sysdev); i++) {
			ret = sysdev_register(&pxa3xx_sysdev[i]);
			if (ret)
				pr_err("failed to register sysdev[%d]\n", i);
		}

		ret = platform_add_devices(devices, ARRAY_SIZE(devices));
	}

	return ret;
}

postcore_initcall(pxa3xx_init);
Commit	Line	Data
2c8086a5	1	/*
	2	* linux/arch/arm/mach-pxa/pxa3xx.c
	3	*
	4	* code specific to pxa3xx aka Monahans
	5	*
	6	* Copyright (C) 2006 Marvell International Ltd.
	7	*
e9bba8ee	8	* 2007-09-02: eric miao <eric.miao@marvell.com>
2c8086a5	9	* initial version
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License version 2 as
	13	* published by the Free Software Foundation.
	14	*/
	15
	16	#include <linux/module.h>
	17	#include <linux/kernel.h>
	18	#include <linux/init.h>
	19	#include <linux/pm.h>
	20	#include <linux/platform_device.h>
	21	#include <linux/irq.h>
7b5dea12	22	#include <linux/io.h>
c0165504	23	#include <linux/sysdev.h>
b459396e	24	#include <linux/i2c/pxa-i2c.h>
2c8086a5	25
851982c1	26	#include <asm/mach/map.h>
a09e64fb	27	#include <mach/hardware.h>
a58fbcd8	28	#include <mach/gpio.h>
a09e64fb	29	#include <mach/pxa3xx-regs.h>
afd2fc02	30	#include <mach/reset.h>
a09e64fb RK	31	#include <mach/ohci.h>
	32	#include <mach/pm.h>
	33	#include <mach/dma.h>
bf293aec	34	#include <mach/regs-intc.h>
ad68bb9f	35	#include <mach/smemc.h>
2c8086a5	36
	37	#include "generic.h"
	38	#include "devices.h"
	39	#include "clock.h"
	40
bf293aec MR	41	#define PECR_IE(n) ((1 << ((n) * 2)) << 28)
	42	#define PECR_IS(n) ((1 << ((n) * 2)) << 29)
	43
8c3abc7d RK	44	static DEFINE_PXA3_CKEN(pxa3xx_ffuart, FFUART, 14857000, 1);
	45	static DEFINE_PXA3_CKEN(pxa3xx_btuart, BTUART, 14857000, 1);
	46	static DEFINE_PXA3_CKEN(pxa3xx_stuart, STUART, 14857000, 1);
	47	static DEFINE_PXA3_CKEN(pxa3xx_i2c, I2C, 32842000, 0);
	48	static DEFINE_PXA3_CKEN(pxa3xx_udc, UDC, 48000000, 5);
	49	static DEFINE_PXA3_CKEN(pxa3xx_usbh, USBH, 48000000, 0);
e68750ae	50	static DEFINE_PXA3_CKEN(pxa3xx_u2d, USB2, 48000000, 0);
8c3abc7d RK	51	static DEFINE_PXA3_CKEN(pxa3xx_keypad, KEYPAD, 32768, 0);
	52	static DEFINE_PXA3_CKEN(pxa3xx_ssp1, SSP1, 13000000, 0);
	53	static DEFINE_PXA3_CKEN(pxa3xx_ssp2, SSP2, 13000000, 0);
	54	static DEFINE_PXA3_CKEN(pxa3xx_ssp3, SSP3, 13000000, 0);
	55	static DEFINE_PXA3_CKEN(pxa3xx_ssp4, SSP4, 13000000, 0);
	56	static DEFINE_PXA3_CKEN(pxa3xx_pwm0, PWM0, 13000000, 0);
	57	static DEFINE_PXA3_CKEN(pxa3xx_pwm1, PWM1, 13000000, 0);
	58	static DEFINE_PXA3_CKEN(pxa3xx_mmc1, MMC1, 19500000, 0);
	59	static DEFINE_PXA3_CKEN(pxa3xx_mmc2, MMC2, 19500000, 0);
	60
2e8581e7	61	static DEFINE_CK(pxa3xx_lcd, LCD, &clk_pxa3xx_hsio_ops);
c085052b	62	static DEFINE_CK(pxa3xx_smemc, SMC, &clk_pxa3xx_smemc_ops);
2e8581e7 EM	63	static DEFINE_CK(pxa3xx_camera, CAMERA, &clk_pxa3xx_hsio_ops);
2e8581e7 EM	64	static DEFINE_CK(pxa3xx_ac97, AC97, &clk_pxa3xx_ac97_ops);
4029813c	65	static DEFINE_CLK(pxa3xx_pout, &clk_pxa3xx_pout_ops, 13000000, 70);
2e8581e7	66
8c3abc7d RK	67	static struct clk_lookup pxa3xx_clkregs[] = {
	68	INIT_CLKREG(&clk_pxa3xx_pout, NULL, "CLK_POUT"),
	69	/* Power I2C clock is always on */
5c68b099	70	INIT_CLKREG(&clk_dummy, "pxa3xx-pwri2c.1", NULL),
8c3abc7d RK	71	INIT_CLKREG(&clk_pxa3xx_lcd, "pxa2xx-fb", NULL),
	72	INIT_CLKREG(&clk_pxa3xx_camera, NULL, "CAMCLK"),
	73	INIT_CLKREG(&clk_pxa3xx_ac97, NULL, "AC97CLK"),
	74	INIT_CLKREG(&clk_pxa3xx_ffuart, "pxa2xx-uart.0", NULL),
	75	INIT_CLKREG(&clk_pxa3xx_btuart, "pxa2xx-uart.1", NULL),
	76	INIT_CLKREG(&clk_pxa3xx_stuart, "pxa2xx-uart.2", NULL),
	77	INIT_CLKREG(&clk_pxa3xx_stuart, "pxa2xx-ir", "UARTCLK"),
	78	INIT_CLKREG(&clk_pxa3xx_i2c, "pxa2xx-i2c.0", NULL),
	79	INIT_CLKREG(&clk_pxa3xx_udc, "pxa27x-udc", NULL),
	80	INIT_CLKREG(&clk_pxa3xx_usbh, "pxa27x-ohci", NULL),
69f22be7	81	INIT_CLKREG(&clk_pxa3xx_u2d, "pxa3xx-u2d", NULL),
8c3abc7d RK	82	INIT_CLKREG(&clk_pxa3xx_keypad, "pxa27x-keypad", NULL),
	83	INIT_CLKREG(&clk_pxa3xx_ssp1, "pxa27x-ssp.0", NULL),
	84	INIT_CLKREG(&clk_pxa3xx_ssp2, "pxa27x-ssp.1", NULL),
	85	INIT_CLKREG(&clk_pxa3xx_ssp3, "pxa27x-ssp.2", NULL),
	86	INIT_CLKREG(&clk_pxa3xx_ssp4, "pxa27x-ssp.3", NULL),
	87	INIT_CLKREG(&clk_pxa3xx_pwm0, "pxa27x-pwm.0", NULL),
	88	INIT_CLKREG(&clk_pxa3xx_pwm1, "pxa27x-pwm.1", NULL),
	89	INIT_CLKREG(&clk_pxa3xx_mmc1, "pxa2xx-mci.0", NULL),
	90	INIT_CLKREG(&clk_pxa3xx_mmc2, "pxa2xx-mci.1", NULL),
c085052b	91	INIT_CLKREG(&clk_pxa3xx_smemc, "pxa2xx-pcmcia", NULL),
2c8086a5	92	};
2c8086a5	93
7b5dea12	94	#ifdef CONFIG_PM
7b5dea12 RK	95
	96	#define ISRAM_START 0x5c000000
	97	#define ISRAM_SIZE SZ_256K
	98
	99	static void __iomem *sram;
	100	static unsigned long wakeup_src;
	101
7b5dea12 RK	102	/*
	103	* Enter a standby mode (S0D1C2 or S0D2C2). Upon wakeup, the dynamic
	104	* memory controller has to be reinitialised, so we place some code
	105	* in the SRAM to perform this function.
	106	*
	107	* We disable FIQs across the standby - otherwise, we might receive a
	108	* FIQ while the SDRAM is unavailable.
	109	*/
	110	static void pxa3xx_cpu_standby(unsigned int pwrmode)
	111	{
	112	extern const char pm_enter_standby_start[], pm_enter_standby_end[];
	113	void (fn)(unsigned int) = (void __force )(sram + 0x8000);
	114
	115	memcpy_toio(sram + 0x8000, pm_enter_standby_start,
	116	pm_enter_standby_end - pm_enter_standby_start);
	117
	118	AD2D0SR = ~0;
	119	AD2D1SR = ~0;
	120	AD2D0ER = wakeup_src;
	121	AD2D1ER = 0;
	122	ASCR = ASCR;
	123	ARSR = ARSR;
	124
	125	local_fiq_disable();
	126	fn(pwrmode);
	127	local_fiq_enable();
	128
	129	AD2D0ER = 0;
	130	AD2D1ER = 0;
7b5dea12 RK	131	}
7b5dea12 RK	132
c4d1fb62	133	/*
	134	* NOTE: currently, the OBM (OEM Boot Module) binary comes along with
	135	* PXA3xx development kits assumes that the resuming process continues
	136	* with the address stored within the first 4 bytes of SDRAM. The PSPR
	137	* register is used privately by BootROM and OBM, and _must_ be set to
	138	* 0x5c014000 for the moment.
	139	*/
	140	static void pxa3xx_cpu_pm_suspend(void)
	141	{
	142	volatile unsigned long p = (volatile void )0xc0000000;
	143	unsigned long saved_data = *p;
	144
4f5ad99b	145	extern void pxa3xx_cpu_suspend(long);
c4d1fb62	146
	147	/* resuming from D2 requires the HSIO2/BOOT/TPM clocks enabled */
	148	CKENA \|= (1 << CKEN_BOOT) \| (1 << CKEN_TPM);
	149	CKENB \|= 1 << (CKEN_HSIO2 & 0x1f);
	150
	151	/* clear and setup wakeup source */
	152	AD3SR = ~0;
	153	AD3ER = wakeup_src;
	154	ASCR = ASCR;
	155	ARSR = ARSR;
	156
	157	PCFR \|= (1u << 13); /* L1_DIS */
	158	PCFR &= ~((1u << 12) \| (1u << 1)); /* L0_EN \| SL_ROD */
	159
	160	PSPR = 0x5c014000;
	161
	162	/* overwrite with the resume address */
4f5ad99b	163	*p = virt_to_phys(cpu_resume);
c4d1fb62	164
4f5ad99b	165	pxa3xx_cpu_suspend(PLAT_PHYS_OFFSET - PAGE_OFFSET);
c4d1fb62	166
	167	*p = saved_data;
	168
	169	AD3ER = 0;
	170	}
	171
7b5dea12 RK	172	static void pxa3xx_cpu_pm_enter(suspend_state_t state)
	173	{
	174	/*
	175	* Don't sleep if no wakeup sources are defined
	176	*/
b86a5da8 MB	177	if (wakeup_src == 0) {
b86a5da8 MB	178	printk(KERN_ERR "Not suspending: no wakeup sources\n");
7b5dea12	179	return;
b86a5da8	180	}
7b5dea12 RK	181
	182	switch (state) {
	183	case PM_SUSPEND_STANDBY:
	184	pxa3xx_cpu_standby(PXA3xx_PM_S0D2C2);
	185	break;
	186
	187	case PM_SUSPEND_MEM:
c4d1fb62	188	pxa3xx_cpu_pm_suspend();
7b5dea12 RK	189	break;
	190	}
	191	}
	192
	193	static int pxa3xx_cpu_pm_valid(suspend_state_t state)
	194	{
	195	return state == PM_SUSPEND_MEM \|\| state == PM_SUSPEND_STANDBY;
	196	}
	197
	198	static struct pxa_cpu_pm_fns pxa3xx_cpu_pm_fns = {
7b5dea12 RK	199	.valid = pxa3xx_cpu_pm_valid,
7b5dea12 RK	200	.enter = pxa3xx_cpu_pm_enter,
2c8086a5	201	};
2c8086a5	202
7b5dea12 RK	203	static void __init pxa3xx_init_pm(void)
	204	{
	205	sram = ioremap(ISRAM_START, ISRAM_SIZE);
	206	if (!sram) {
	207	printk(KERN_ERR "Unable to map ISRAM: disabling standby/suspend\n");
	208	return;
	209	}
	210
	211	/*
	212	* Since we copy wakeup code into the SRAM, we need to ensure
	213	* that it is preserved over the low power modes. Note: bit 8
	214	* is undocumented in the developer manual, but must be set.
	215	*/
	216	AD1R \|= ADXR_L2 \| ADXR_R0;
	217	AD2R \|= ADXR_L2 \| ADXR_R0;
	218	AD3R \|= ADXR_L2 \| ADXR_R0;
	219
	220	/*
	221	* Clear the resume enable registers.
	222	*/
	223	AD1D0ER = 0;
	224	AD2D0ER = 0;
	225	AD2D1ER = 0;
	226	AD3ER = 0;
	227
	228	pxa_cpu_pm_fns = &pxa3xx_cpu_pm_fns;
	229	}
	230
a3f4c927	231	static int pxa3xx_set_wake(struct irq_data *d, unsigned int on)
7b5dea12 RK	232	{
	233	unsigned long flags, mask = 0;
	234
a3f4c927	235	switch (d->irq) {
7b5dea12 RK	236	case IRQ_SSP3:
	237	mask = ADXER_MFP_WSSP3;
	238	break;
	239	case IRQ_MSL:
	240	mask = ADXER_WMSL0;
	241	break;
	242	case IRQ_USBH2:
	243	case IRQ_USBH1:
	244	mask = ADXER_WUSBH;
	245	break;
	246	case IRQ_KEYPAD:
	247	mask = ADXER_WKP;
	248	break;
	249	case IRQ_AC97:
	250	mask = ADXER_MFP_WAC97;
	251	break;
	252	case IRQ_USIM:
	253	mask = ADXER_WUSIM0;
	254	break;
	255	case IRQ_SSP2:
	256	mask = ADXER_MFP_WSSP2;
	257	break;
	258	case IRQ_I2C:
	259	mask = ADXER_MFP_WI2C;
	260	break;
	261	case IRQ_STUART:
	262	mask = ADXER_MFP_WUART3;
	263	break;
	264	case IRQ_BTUART:
	265	mask = ADXER_MFP_WUART2;
	266	break;
	267	case IRQ_FFUART:
	268	mask = ADXER_MFP_WUART1;
	269	break;
	270	case IRQ_MMC:
	271	mask = ADXER_MFP_WMMC1;
	272	break;
	273	case IRQ_SSP:
	274	mask = ADXER_MFP_WSSP1;
	275	break;
	276	case IRQ_RTCAlrm:
	277	mask = ADXER_WRTC;
	278	break;
	279	case IRQ_SSP4:
	280	mask = ADXER_MFP_WSSP4;
	281	break;
	282	case IRQ_TSI:
	283	mask = ADXER_WTSI;
	284	break;
	285	case IRQ_USIM2:
	286	mask = ADXER_WUSIM1;
	287	break;
	288	case IRQ_MMC2:
	289	mask = ADXER_MFP_WMMC2;
	290	break;
	291	case IRQ_NAND:
	292	mask = ADXER_MFP_WFLASH;
	293	break;
	294	case IRQ_USB2:
	295	mask = ADXER_WUSB2;
	296	break;
	297	case IRQ_WAKEUP0:
	298	mask = ADXER_WEXTWAKE0;
	299	break;
300	case IRQ_WAKEUP1:
301	mask = ADXER_WEXTWAKE1;
302	break;
303	case IRQ_MMC3:
304	mask = ADXER_MFP_GEN12;
305	break;
e1217707 MB	306	default:
e1217707 MB	307	return -EINVAL;
7b5dea12 RK	308	}
	309
	310	local_irq_save(flags);
	311	if (on)
	312	wakeup_src \|= mask;
	313	else
	314	wakeup_src &= ~mask;
	315	local_irq_restore(flags);
	316
	317	return 0;
	318	}
7b5dea12 RK	319	#else
7b5dea12 RK	320	static inline void pxa3xx_init_pm(void) {}
b9e25ace	321	#define pxa3xx_set_wake NULL
7b5dea12 RK	322	#endif
7b5dea12 RK	323
a3f4c927	324	static void pxa_ack_ext_wakeup(struct irq_data *d)
bf293aec	325	{
a3f4c927	326	PECR \|= PECR_IS(d->irq - IRQ_WAKEUP0);
bf293aec MR	327	}
bf293aec MR	328
a3f4c927	329	static void pxa_mask_ext_wakeup(struct irq_data *d)
bf293aec	330	{
a3f4c927 LB	331	ICMR2 &= ~(1 << ((d->irq - PXA_IRQ(0)) & 0x1f));
a3f4c927 LB	332	PECR &= ~PECR_IE(d->irq - IRQ_WAKEUP0);
bf293aec MR	333	}
bf293aec MR	334
a3f4c927	335	static void pxa_unmask_ext_wakeup(struct irq_data *d)
bf293aec	336	{
a3f4c927 LB	337	ICMR2 \|= 1 << ((d->irq - PXA_IRQ(0)) & 0x1f);
a3f4c927 LB	338	PECR \|= PECR_IE(d->irq - IRQ_WAKEUP0);
bf293aec MR	339	}
bf293aec MR	340
a3f4c927	341	static int pxa_set_ext_wakeup_type(struct irq_data *d, unsigned int flow_type)
12882096 IG	342	{
12882096 IG	343	if (flow_type & IRQ_TYPE_EDGE_RISING)
a3f4c927	344	PWER \|= 1 << (d->irq - IRQ_WAKEUP0);
12882096 IG	345
12882096 IG	346	if (flow_type & IRQ_TYPE_EDGE_FALLING)
a3f4c927	347	PWER \|= 1 << (d->irq - IRQ_WAKEUP0 + 2);
12882096 IG	348
	349	return 0;
	350	}
	351
bf293aec MR	352	static struct irq_chip pxa_ext_wakeup_chip = {
bf293aec MR	353	.name = "WAKEUP",
a3f4c927 LB	354	.irq_ack = pxa_ack_ext_wakeup,
	355	.irq_mask = pxa_mask_ext_wakeup,
	356	.irq_unmask = pxa_unmask_ext_wakeup,
	357	.irq_set_type = pxa_set_ext_wakeup_type,
bf293aec MR	358	};
	359
	360	static void __init pxa_init_ext_wakeup_irq(set_wake_t fn)
	361	{
	362	int irq;
	363
	364	for (irq = IRQ_WAKEUP0; irq <= IRQ_WAKEUP1; irq++) {
	365	set_irq_chip(irq, &pxa_ext_wakeup_chip);
	366	set_irq_handler(irq, handle_edge_irq);
	367	set_irq_flags(irq, IRQF_VALID);
	368	}
	369
a3f4c927	370	pxa_ext_wakeup_chip.irq_set_wake = fn;
bf293aec MR	371	}
bf293aec MR	372
2c8086a5	373	void __init pxa3xx_init_irq(void)
	374	{
	375	/* enable CP6 access */
	376	u32 value;
	377	__asm__ __volatile__("mrc p15, 0, %0, c15, c1, 0\n": "=r"(value));
	378	value \|= (1 << 6);
	379	__asm__ __volatile__("mcr p15, 0, %0, c15, c1, 0\n": :"r"(value));
	380
b9e25ace	381	pxa_init_irq(56, pxa3xx_set_wake);
bf293aec	382	pxa_init_ext_wakeup_irq(pxa3xx_set_wake);
a58fbcd8	383	pxa_init_gpio(IRQ_GPIO_2_x, 2, 127, NULL);
2c8086a5	384	}
2c8086a5	385
851982c1 MV	386	static struct map_desc pxa3xx_io_desc[] __initdata = {
851982c1 MV	387	{ /* Mem Ctl */
ad68bb9f MV	388	.virtual = SMEMC_VIRT,
ad68bb9f MV	389	.pfn = __phys_to_pfn(PXA3XX_SMEMC_BASE),
851982c1 MV	390	.length = 0x00200000,
	391	.type = MT_DEVICE
	392	}
	393	};
	394
	395	void __init pxa3xx_map_io(void)
	396	{
	397	pxa_map_io();
	398	iotable_init(ARRAY_AND_SIZE(pxa3xx_io_desc));
	399	pxa3xx_get_clk_frequency_khz(1);
	400	}
	401
2c8086a5	402	/*
	403	* device registration specific to PXA3xx.
	404	*/
	405
9ba63c4f MR	406	void __init pxa3xx_set_i2c_power_info(struct i2c_pxa_platform_data *info)
9ba63c4f MR	407	{
14758220	408	pxa_register_device(&pxa3xx_device_i2c_power, info);
9ba63c4f MR	409	}
9ba63c4f MR	410
2c8086a5	411	static struct platform_device *devices[] __initdata = {
94c35a6b	412	&pxa27x_device_udc,
09a5358d	413	&pxa_device_pmu,
2c8086a5	414	&pxa_device_i2s,
f0fba2ad LG	415	&pxa_device_asoc_ssp1,
	416	&pxa_device_asoc_ssp2,
	417	&pxa_device_asoc_ssp3,
	418	&pxa_device_asoc_ssp4,
	419	&pxa_device_asoc_platform,
72493146	420	&sa1100_device_rtc,
2c8086a5	421	&pxa_device_rtc,
d8e0db11	422	&pxa27x_device_ssp1,
	423	&pxa27x_device_ssp2,
	424	&pxa27x_device_ssp3,
	425	&pxa3xx_device_ssp4,
75540c1a	426	&pxa27x_device_pwm0,
75540c1a	427	&pxa27x_device_pwm1,
2c8086a5	428	};
2c8086a5	429
c0165504	430	static struct sys_device pxa3xx_sysdev[] = {
c0165504	431	{
c0165504	432	.cls = &pxa_irq_sysclass,
4be35e23	433	}, {
4be35e23	434	.cls = &pxa3xx_mfp_sysclass,
16dfdbf0	435	}, {
16dfdbf0	436	.cls = &pxa_gpio_sysclass,
aae8224d EM	437	}, {
	438	.cls = &pxa3xx_clock_sysclass,
	439	}
c0165504	440	};
c0165504	441
2c8086a5	442	static int __init pxa3xx_init(void)
2c8086a5	443	{
c0165504	444	int i, ret = 0;
2c8086a5	445
2c8086a5	446	if (cpu_is_pxa3xx()) {
04fef228 EM	447
	448	reset_status = ARSR;
	449
86260f98 DK	450	/*
	451	* clear RDH bit every time after reset
	452	*
	453	* Note: the last 3 bits DxS are write-1-to-clear so carefully
	454	* preserve them here in case they will be referenced later
	455	*/
	456	ASCR &= ~(ASCR_RDH \| ASCR_D1S \| ASCR_D2S \| ASCR_D3S);
	457
0a0300dc	458	clkdev_add_table(pxa3xx_clkregs, ARRAY_SIZE(pxa3xx_clkregs));
2c8086a5	459
fef1f99a	460	if ((ret = pxa_init_dma(IRQ_DMA, 32)))
2c8086a5	461	return ret;
2c8086a5	462
7b5dea12 RK	463	pxa3xx_init_pm();
7b5dea12 RK	464
c0165504	465	for (i = 0; i < ARRAY_SIZE(pxa3xx_sysdev); i++) {
	466	ret = sysdev_register(&pxa3xx_sysdev[i]);
	467	if (ret)
	468	pr_err("failed to register sysdev[%d]\n", i);
	469	}
	470
	471	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
2c8086a5	472	}
c0165504	473
c0165504	474	return ret;
2c8086a5	475	}
2c8086a5	476
1c104e0e	477	postcore_initcall(pxa3xx_init);