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

// SPDX-License-Identifier: GPL-2.0-only
/*
 * linux/arch/arm/mach-pxa/pxa3xx.c
 *
 * code specific to pxa3xx aka Monahans
 *
 * Copyright (C) 2006 Marvell International Ltd.
 *
 * 2007-09-02: eric miao <[email protected]>
 *             initial version
 */
#include <linux/dmaengine.h>
#include <linux/dma/pxa-dma.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/gpio-pxa.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/irqchip.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/syscore_ops.h>
#include <linux/platform_data/i2c-pxa.h>
#include <linux/platform_data/mmp_dma.h>
#include <linux/soc/pxa/cpu.h>

#include <asm/mach/map.h>
#include <asm/suspend.h>
#include <mach/pxa3xx-regs.h>
#include <mach/reset.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
#include "pm.h"
#include <mach/addr-map.h>
#include <mach/smemc.h>
#include <mach/irqs.h>

#include "generic.h"
#include "devices.h"

#define PECR_IE(n)	((1 << ((n) * 2)) << 28)
#define PECR_IS(n)	((1 << ((n) * 2)) << 29)

extern void __init pxa_dt_irq_init(int (*fn)(struct irq_data *, unsigned int));

/*
 * NAND NFC: DFI bus arbitration subset
 */
#define NDCR			(*(volatile u32 __iomem*)(NAND_VIRT + 0))
#define NDCR_ND_ARB_EN		(1 << 12)
#define NDCR_ND_ARB_CNTL	(1 << 19)

#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)
{
	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(".arch_extension xscale\n\t"
		     "mra %Q0, %R0, acc0" : "=r" (acc0));
#endif

	/* 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 = __pa_symbol(cpu_resume);

	cpu_suspend(0, pxa3xx_finish_suspend);

	*p = saved_data;

	AD3ER = 0;

#ifndef CONFIG_IWMMXT
	asm volatile(".arch_extension xscale\n\t"
		     "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);
		irq_clear_status_flags(irq, IRQ_NOREQUEST);
	}

	pxa_ext_wakeup_chip.irq_set_wake = fn;
}

static 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_ext_wakeup_irq(pxa3xx_set_wake);
}

void __init pxa3xx_init_irq(void)
{
	__pxa3xx_init_irq();
	pxa_init_irq(56, pxa3xx_set_wake);
}

#ifdef CONFIG_OF
static int __init __init
pxa3xx_dt_init_irq(struct device_node *node, struct device_node *parent)
{
	__pxa3xx_init_irq();
	pxa_dt_irq_init(pxa3xx_set_wake);
	set_handle_irq(ichp_handle_irq);

	return 0;
}
IRQCHIP_DECLARE(pxa3xx_intc, "marvell,pxa-intc", pxa3xx_dt_init_irq);
#endif	/* CONFIG_OF */

static struct map_desc pxa3xx_io_desc[] __initdata = {
	{	/* Mem Ctl */
		.virtual	= (unsigned long)SMEMC_VIRT,
		.pfn		= __phys_to_pfn(PXA3XX_SMEMC_BASE),
		.length		= SMEMC_SIZE,
		.type		= MT_DEVICE
	}, {
		.virtual	= (unsigned long)NAND_VIRT,
		.pfn		= __phys_to_pfn(NAND_PHYS),
		.length		= NAND_SIZE,
		.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 pxa_gpio_platform_data pxa3xx_gpio_pdata = {
	.irq_base	= PXA_GPIO_TO_IRQ(0),
};

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,
	&pxa_device_rtc,
	&pxa3xx_device_ssp1,
	&pxa3xx_device_ssp2,
	&pxa3xx_device_ssp3,
	&pxa3xx_device_ssp4,
	&pxa27x_device_pwm0,
	&pxa27x_device_pwm1,
};

static const struct dma_slave_map pxa3xx_slave_map[] = {
	/* PXA25x, PXA27x and PXA3xx common entries */
	{ "pxa2xx-ac97", "pcm_pcm_mic_mono", PDMA_FILTER_PARAM(LOWEST, 8) },
	{ "pxa2xx-ac97", "pcm_pcm_aux_mono_in", PDMA_FILTER_PARAM(LOWEST, 9) },
	{ "pxa2xx-ac97", "pcm_pcm_aux_mono_out",
	  PDMA_FILTER_PARAM(LOWEST, 10) },
	{ "pxa2xx-ac97", "pcm_pcm_stereo_in", PDMA_FILTER_PARAM(LOWEST, 11) },
	{ "pxa2xx-ac97", "pcm_pcm_stereo_out", PDMA_FILTER_PARAM(LOWEST, 12) },
	{ "pxa-ssp-dai.0", "rx", PDMA_FILTER_PARAM(LOWEST, 13) },
	{ "pxa-ssp-dai.0", "tx", PDMA_FILTER_PARAM(LOWEST, 14) },
	{ "pxa-ssp-dai.1", "rx", PDMA_FILTER_PARAM(LOWEST, 15) },
	{ "pxa-ssp-dai.1", "tx", PDMA_FILTER_PARAM(LOWEST, 16) },
	{ "pxa2xx-ir", "rx", PDMA_FILTER_PARAM(LOWEST, 17) },
	{ "pxa2xx-ir", "tx", PDMA_FILTER_PARAM(LOWEST, 18) },
	{ "pxa2xx-mci.0", "rx", PDMA_FILTER_PARAM(LOWEST, 21) },
	{ "pxa2xx-mci.0", "tx", PDMA_FILTER_PARAM(LOWEST, 22) },
	{ "pxa-ssp-dai.2", "rx", PDMA_FILTER_PARAM(LOWEST, 66) },
	{ "pxa-ssp-dai.2", "tx", PDMA_FILTER_PARAM(LOWEST, 67) },

	/* PXA3xx specific map */
	{ "pxa-ssp-dai.3", "rx", PDMA_FILTER_PARAM(LOWEST, 2) },
	{ "pxa-ssp-dai.3", "tx", PDMA_FILTER_PARAM(LOWEST, 3) },
	{ "pxa2xx-mci.1", "rx", PDMA_FILTER_PARAM(LOWEST, 93) },
	{ "pxa2xx-mci.1", "tx", PDMA_FILTER_PARAM(LOWEST, 94) },
	{ "pxa3xx-nand", "data", PDMA_FILTER_PARAM(LOWEST, 97) },
	{ "pxa2xx-mci.2", "rx", PDMA_FILTER_PARAM(LOWEST, 100) },
	{ "pxa2xx-mci.2", "tx", PDMA_FILTER_PARAM(LOWEST, 101) },
};

static struct mmp_dma_platdata pxa3xx_dma_pdata = {
	.dma_channels	= 32,
	.nb_requestors	= 100,
	.slave_map	= pxa3xx_slave_map,
	.slave_map_cnt	= ARRAY_SIZE(pxa3xx_slave_map),
};

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);

		/*
		 * Disable DFI bus arbitration, to prevent a system bus lock if
		 * somebody disables the NAND clock (unused clock) while this
		 * bit remains set.
		 */
		NDCR = (NDCR & ~NDCR_ND_ARB_EN) | NDCR_ND_ARB_CNTL;

		pxa3xx_init_pm();

		enable_irq_wake(IRQ_WAKEUP0);
		if (cpu_is_pxa320())
			enable_irq_wake(IRQ_WAKEUP1);

		register_syscore_ops(&pxa_irq_syscore_ops);
		register_syscore_ops(&pxa3xx_mfp_syscore_ops);

		if (of_have_populated_dt())
			return 0;

		pxa2xx_set_dmac_info(&pxa3xx_dma_pdata);
		ret = platform_add_devices(devices, ARRAY_SIZE(devices));
		if (ret)
			return ret;
		if (cpu_is_pxa300() || cpu_is_pxa310() || cpu_is_pxa320()) {
			platform_device_add_data(&pxa3xx_device_gpio,
						 &pxa3xx_gpio_pdata,
						 sizeof(pxa3xx_gpio_pdata));
			ret = platform_device_register(&pxa3xx_device_gpio);
		}
	}

	return ret;
}

postcore_initcall(pxa3xx_init);
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
2c8086a5	2	/*
	3	* linux/arch/arm/mach-pxa/pxa3xx.c
	4	*
	5	* code specific to pxa3xx aka Monahans
	6	*
	7	* Copyright (C) 2006 Marvell International Ltd.
	8	*
e9bba8ee	9	* 2007-09-02: eric miao <[email protected]>
2c8086a5	10	* initial version
2c8086a5	11	*/
1da10c17 RJ	12	#include <linux/dmaengine.h>
1da10c17 RJ	13	#include <linux/dma/pxa-dma.h>
2c8086a5	14	#include <linux/module.h>
	15	#include <linux/kernel.h>
	16	#include <linux/init.h>
b8f649f1	17	#include <linux/gpio-pxa.h>
2c8086a5	18	#include <linux/pm.h>
	19	#include <linux/platform_device.h>
	20	#include <linux/irq.h>
32f17997	21	#include <linux/irqchip.h>
7b5dea12	22	#include <linux/io.h>
82ce44d1	23	#include <linux/of.h>
2eaa03b5	24	#include <linux/syscore_ops.h>
f15fc9b1	25	#include <linux/platform_data/i2c-pxa.h>
1da10c17	26	#include <linux/platform_data/mmp_dma.h>
08d3df8c	27	#include <linux/soc/pxa/cpu.h>
2c8086a5	28
851982c1	29	#include <asm/mach/map.h>
2c74a0ce	30	#include <asm/suspend.h>
a09e64fb	31	#include <mach/pxa3xx-regs.h>
afd2fc02	32	#include <mach/reset.h>
293b2da1	33	#include <linux/platform_data/usb-ohci-pxa27x.h>
4c25c5d2	34	#include "pm.h"
08d3df8c	35	#include <mach/addr-map.h>
ad68bb9f	36	#include <mach/smemc.h>
4e611091	37	#include <mach/irqs.h>
2c8086a5	38
	39	#include "generic.h"
	40	#include "devices.h"
2c8086a5	41
bf293aec MR	42	#define PECR_IE(n) ((1 << ((n) * 2)) << 28)
	43	#define PECR_IS(n) ((1 << ((n) * 2)) << 29)
	44
089d0362	45	extern void __init pxa_dt_irq_init(int (fn)(struct irq_data , unsigned int));
7b5dea12	46
adf3442c RJ	47	/*
	48	* NAND NFC: DFI bus arbitration subset
	49	*/
	50	#define NDCR ((volatile u32 __iomem)(NAND_VIRT + 0))
	51	#define NDCR_ND_ARB_EN (1 << 12)
	52	#define NDCR_ND_ARB_CNTL (1 << 19)
	53
63910745 AB	54	#ifdef CONFIG_PM
	55
	56	#define ISRAM_START 0x5c000000
	57	#define ISRAM_SIZE SZ_256K
	58
7b5dea12 RK	59	static void __iomem *sram;
	60	static unsigned long wakeup_src;
	61
7b5dea12 RK	62	/*
	63	* Enter a standby mode (S0D1C2 or S0D2C2). Upon wakeup, the dynamic
	64	* memory controller has to be reinitialised, so we place some code
	65	* in the SRAM to perform this function.
	66	*
	67	* We disable FIQs across the standby - otherwise, we might receive a
	68	* FIQ while the SDRAM is unavailable.
	69	*/
	70	static void pxa3xx_cpu_standby(unsigned int pwrmode)
	71	{
7b5dea12 RK	72	void (fn)(unsigned int) = (void __force )(sram + 0x8000);
	73
	74	memcpy_toio(sram + 0x8000, pm_enter_standby_start,
	75	pm_enter_standby_end - pm_enter_standby_start);
	76
	77	AD2D0SR = ~0;
	78	AD2D1SR = ~0;
	79	AD2D0ER = wakeup_src;
	80	AD2D1ER = 0;
	81	ASCR = ASCR;
	82	ARSR = ARSR;
	83
	84	local_fiq_disable();
	85	fn(pwrmode);
	86	local_fiq_enable();
	87
	88	AD2D0ER = 0;
	89	AD2D1ER = 0;
7b5dea12 RK	90	}
7b5dea12 RK	91
c4d1fb62	92	/*
	93	* NOTE: currently, the OBM (OEM Boot Module) binary comes along with
	94	* PXA3xx development kits assumes that the resuming process continues
	95	* with the address stored within the first 4 bytes of SDRAM. The PSPR
	96	* register is used privately by BootROM and OBM, and _must_ be set to
	97	* 0x5c014000 for the moment.
	98	*/
	99	static void pxa3xx_cpu_pm_suspend(void)
	100	{
	101	volatile unsigned long p = (volatile void )0xc0000000;
	102	unsigned long saved_data = *p;
a9503d21 RK	103	#ifndef CONFIG_IWMMXT
a9503d21 RK	104	u64 acc0;
c4d1fb62	105
343c1cdb AB	106	asm volatile(".arch_extension xscale\n\t"
343c1cdb AB	107	"mra %Q0, %R0, acc0" : "=r" (acc0));
a9503d21 RK	108	#endif
a9503d21 RK	109
c4d1fb62	110	/* resuming from D2 requires the HSIO2/BOOT/TPM clocks enabled */
	111	CKENA \|= (1 << CKEN_BOOT) \| (1 << CKEN_TPM);
	112	CKENB \|= 1 << (CKEN_HSIO2 & 0x1f);
	113
	114	/* clear and setup wakeup source */
	115	AD3SR = ~0;
	116	AD3ER = wakeup_src;
	117	ASCR = ASCR;
	118	ARSR = ARSR;
	119
	120	PCFR \|= (1u << 13); /* L1_DIS */
	121	PCFR &= ~((1u << 12) \| (1u << 1)); /* L0_EN \| SL_ROD */
	122
	123	PSPR = 0x5c014000;
	124
	125	/* overwrite with the resume address */
64fc2a94	126	*p = __pa_symbol(cpu_resume);
c4d1fb62	127
2c74a0ce	128	cpu_suspend(0, pxa3xx_finish_suspend);
c4d1fb62	129
	130	*p = saved_data;
	131
	132	AD3ER = 0;
a9503d21 RK	133
a9503d21 RK	134	#ifndef CONFIG_IWMMXT
343c1cdb AB	135	asm volatile(".arch_extension xscale\n\t"
343c1cdb AB	136	"mar acc0, %Q0, %R0" : "=r" (acc0));
a9503d21	137	#endif
c4d1fb62	138	}
c4d1fb62	139
7b5dea12 RK	140	static void pxa3xx_cpu_pm_enter(suspend_state_t state)
	141	{
	142	/*
	143	* Don't sleep if no wakeup sources are defined
	144	*/
b86a5da8 MB	145	if (wakeup_src == 0) {
b86a5da8 MB	146	printk(KERN_ERR "Not suspending: no wakeup sources\n");
7b5dea12	147	return;
b86a5da8	148	}
7b5dea12 RK	149
	150	switch (state) {
	151	case PM_SUSPEND_STANDBY:
	152	pxa3xx_cpu_standby(PXA3xx_PM_S0D2C2);
	153	break;
	154
	155	case PM_SUSPEND_MEM:
c4d1fb62	156	pxa3xx_cpu_pm_suspend();
7b5dea12 RK	157	break;
	158	}
	159	}
	160
	161	static int pxa3xx_cpu_pm_valid(suspend_state_t state)
	162	{
	163	return state == PM_SUSPEND_MEM \|\| state == PM_SUSPEND_STANDBY;
	164	}
	165
	166	static struct pxa_cpu_pm_fns pxa3xx_cpu_pm_fns = {
7b5dea12 RK	167	.valid = pxa3xx_cpu_pm_valid,
7b5dea12 RK	168	.enter = pxa3xx_cpu_pm_enter,
2c8086a5	169	};
2c8086a5	170
7b5dea12 RK	171	static void __init pxa3xx_init_pm(void)
	172	{
	173	sram = ioremap(ISRAM_START, ISRAM_SIZE);
	174	if (!sram) {
	175	printk(KERN_ERR "Unable to map ISRAM: disabling standby/suspend\n");
	176	return;
	177	}
	178
	179	/*
	180	* Since we copy wakeup code into the SRAM, we need to ensure
	181	* that it is preserved over the low power modes. Note: bit 8
	182	* is undocumented in the developer manual, but must be set.
	183	*/
	184	AD1R \|= ADXR_L2 \| ADXR_R0;
	185	AD2R \|= ADXR_L2 \| ADXR_R0;
	186	AD3R \|= ADXR_L2 \| ADXR_R0;
	187
	188	/*
	189	* Clear the resume enable registers.
	190	*/
	191	AD1D0ER = 0;
	192	AD2D0ER = 0;
	193	AD2D1ER = 0;
	194	AD3ER = 0;
	195
	196	pxa_cpu_pm_fns = &pxa3xx_cpu_pm_fns;
	197	}
	198
a3f4c927	199	static int pxa3xx_set_wake(struct irq_data *d, unsigned int on)
7b5dea12 RK	200	{
	201	unsigned long flags, mask = 0;
	202
a3f4c927	203	switch (d->irq) {
7b5dea12 RK	204	case IRQ_SSP3:
	205	mask = ADXER_MFP_WSSP3;
	206	break;
	207	case IRQ_MSL:
	208	mask = ADXER_WMSL0;
	209	break;
	210	case IRQ_USBH2:
	211	case IRQ_USBH1:
	212	mask = ADXER_WUSBH;
	213	break;
	214	case IRQ_KEYPAD:
	215	mask = ADXER_WKP;
	216	break;
	217	case IRQ_AC97:
	218	mask = ADXER_MFP_WAC97;
	219	break;
	220	case IRQ_USIM:
	221	mask = ADXER_WUSIM0;
	222	break;
	223	case IRQ_SSP2:
	224	mask = ADXER_MFP_WSSP2;
	225	break;
	226	case IRQ_I2C:
	227	mask = ADXER_MFP_WI2C;
	228	break;
	229	case IRQ_STUART:
	230	mask = ADXER_MFP_WUART3;
	231	break;
	232	case IRQ_BTUART:
	233	mask = ADXER_MFP_WUART2;
	234	break;
	235	case IRQ_FFUART:
	236	mask = ADXER_MFP_WUART1;
	237	break;
	238	case IRQ_MMC:
	239	mask = ADXER_MFP_WMMC1;
	240	break;
	241	case IRQ_SSP:
	242	mask = ADXER_MFP_WSSP1;
	243	break;
	244	case IRQ_RTCAlrm:
	245	mask = ADXER_WRTC;
	246	break;
	247	case IRQ_SSP4:
	248	mask = ADXER_MFP_WSSP4;
	249	break;
	250	case IRQ_TSI:
	251	mask = ADXER_WTSI;
	252	break;
	253	case IRQ_USIM2:
	254	mask = ADXER_WUSIM1;
	255	break;
	256	case IRQ_MMC2:
	257	mask = ADXER_MFP_WMMC2;
	258	break;
	259	case IRQ_NAND:
	260	mask = ADXER_MFP_WFLASH;
	261	break;
	262	case IRQ_USB2:
	263	mask = ADXER_WUSB2;
	264	break;
	265	case IRQ_WAKEUP0:
	266	mask = ADXER_WEXTWAKE0;
	267	break;
268	case IRQ_WAKEUP1:
269	mask = ADXER_WEXTWAKE1;
270	break;
271	case IRQ_MMC3:
272	mask = ADXER_MFP_GEN12;
273	break;
e1217707 MB	274	default:
e1217707 MB	275	return -EINVAL;
7b5dea12 RK	276	}
	277
	278	local_irq_save(flags);
	279	if (on)
	280	wakeup_src \|= mask;
	281	else
	282	wakeup_src &= ~mask;
	283	local_irq_restore(flags);
	284
	285	return 0;
	286	}
7b5dea12 RK	287	#else
7b5dea12 RK	288	static inline void pxa3xx_init_pm(void) {}
b9e25ace	289	#define pxa3xx_set_wake NULL
7b5dea12 RK	290	#endif
7b5dea12 RK	291
a3f4c927	292	static void pxa_ack_ext_wakeup(struct irq_data *d)
bf293aec	293	{
a3f4c927	294	PECR \|= PECR_IS(d->irq - IRQ_WAKEUP0);
bf293aec MR	295	}
bf293aec MR	296
a3f4c927	297	static void pxa_mask_ext_wakeup(struct irq_data *d)
bf293aec	298	{
5d284e35	299	pxa_mask_irq(d);
a3f4c927	300	PECR &= ~PECR_IE(d->irq - IRQ_WAKEUP0);
bf293aec MR	301	}
bf293aec MR	302
a3f4c927	303	static void pxa_unmask_ext_wakeup(struct irq_data *d)
bf293aec	304	{
5d284e35	305	pxa_unmask_irq(d);
a3f4c927	306	PECR \|= PECR_IE(d->irq - IRQ_WAKEUP0);
bf293aec MR	307	}
bf293aec MR	308
a3f4c927	309	static int pxa_set_ext_wakeup_type(struct irq_data *d, unsigned int flow_type)
12882096 IG	310	{
12882096 IG	311	if (flow_type & IRQ_TYPE_EDGE_RISING)
a3f4c927	312	PWER \|= 1 << (d->irq - IRQ_WAKEUP0);
12882096 IG	313
12882096 IG	314	if (flow_type & IRQ_TYPE_EDGE_FALLING)
a3f4c927	315	PWER \|= 1 << (d->irq - IRQ_WAKEUP0 + 2);
12882096 IG	316
	317	return 0;
	318	}
	319
bf293aec MR	320	static struct irq_chip pxa_ext_wakeup_chip = {
bf293aec MR	321	.name = "WAKEUP",
a3f4c927 LB	322	.irq_ack = pxa_ack_ext_wakeup,
	323	.irq_mask = pxa_mask_ext_wakeup,
	324	.irq_unmask = pxa_unmask_ext_wakeup,
	325	.irq_set_type = pxa_set_ext_wakeup_type,
bf293aec MR	326	};
bf293aec MR	327
157d2644 HZ	328	static void __init pxa_init_ext_wakeup_irq(int (fn)(struct irq_data ,
157d2644 HZ	329	unsigned int))
bf293aec MR	330	{
	331	int irq;
	332
	333	for (irq = IRQ_WAKEUP0; irq <= IRQ_WAKEUP1; irq++) {
f38c02f3 TG	334	irq_set_chip_and_handler(irq, &pxa_ext_wakeup_chip,
f38c02f3 TG	335	handle_edge_irq);
e8d36d5d	336	irq_clear_status_flags(irq, IRQ_NOREQUEST);
bf293aec MR	337	}
bf293aec MR	338
a3f4c927	339	pxa_ext_wakeup_chip.irq_set_wake = fn;
bf293aec MR	340	}
bf293aec MR	341
089d0362	342	static void __init __pxa3xx_init_irq(void)
2c8086a5	343	{
	344	/* enable CP6 access */
	345	u32 value;
	346	__asm__ __volatile__("mrc p15, 0, %0, c15, c1, 0\n": "=r"(value));
	347	value \|= (1 << 6);
	348	__asm__ __volatile__("mcr p15, 0, %0, c15, c1, 0\n": :"r"(value));
	349
bf293aec	350	pxa_init_ext_wakeup_irq(pxa3xx_set_wake);
2c8086a5	351	}
2c8086a5	352
089d0362 DM	353	void __init pxa3xx_init_irq(void)
	354	{
	355	__pxa3xx_init_irq();
	356	pxa_init_irq(56, pxa3xx_set_wake);
	357	}
	358
e6c509c8	359	#ifdef CONFIG_OF
32f17997 RJ	360	static int __init __init
32f17997 RJ	361	pxa3xx_dt_init_irq(struct device_node node, struct device_node parent)
089d0362 DM	362	{
	363	__pxa3xx_init_irq();
	364	pxa_dt_irq_init(pxa3xx_set_wake);
32f17997 RJ	365	set_handle_irq(ichp_handle_irq);
	366
	367	return 0;
089d0362	368	}
32f17997	369	IRQCHIP_DECLARE(pxa3xx_intc, "marvell,pxa-intc", pxa3xx_dt_init_irq);
e6c509c8	370	#endif /* CONFIG_OF */
089d0362	371
851982c1 MV	372	static struct map_desc pxa3xx_io_desc[] __initdata = {
851982c1 MV	373	{ /* Mem Ctl */
97b09da4	374	.virtual = (unsigned long)SMEMC_VIRT,
ad68bb9f	375	.pfn = __phys_to_pfn(PXA3XX_SMEMC_BASE),
0e32986c	376	.length = SMEMC_SIZE,
851982c1	377	.type = MT_DEVICE
adf3442c RJ	378	}, {
	379	.virtual = (unsigned long)NAND_VIRT,
	380	.pfn = __phys_to_pfn(NAND_PHYS),
	381	.length = NAND_SIZE,
	382	.type = MT_DEVICE
	383	},
851982c1 MV	384	};
	385
	386	void __init pxa3xx_map_io(void)
	387	{
	388	pxa_map_io();
	389	iotable_init(ARRAY_AND_SIZE(pxa3xx_io_desc));
	390	pxa3xx_get_clk_frequency_khz(1);
	391	}
	392
2c8086a5	393	/*
	394	* device registration specific to PXA3xx.
	395	*/
	396
9ba63c4f MR	397	void __init pxa3xx_set_i2c_power_info(struct i2c_pxa_platform_data *info)
9ba63c4f MR	398	{
14758220	399	pxa_register_device(&pxa3xx_device_i2c_power, info);
9ba63c4f MR	400	}
9ba63c4f MR	401
b8f649f1 HZ	402	static struct pxa_gpio_platform_data pxa3xx_gpio_pdata = {
	403	.irq_base = PXA_GPIO_TO_IRQ(0),
	404	};
	405
2c8086a5	406	static struct platform_device *devices[] __initdata = {
94c35a6b	407	&pxa27x_device_udc,
09a5358d	408	&pxa_device_pmu,
2c8086a5	409	&pxa_device_i2s,
f0fba2ad LG	410	&pxa_device_asoc_ssp1,
	411	&pxa_device_asoc_ssp2,
	412	&pxa_device_asoc_ssp3,
	413	&pxa_device_asoc_ssp4,
	414	&pxa_device_asoc_platform,
2c8086a5	415	&pxa_device_rtc,
0da0e227 DM	416	&pxa3xx_device_ssp1,
	417	&pxa3xx_device_ssp2,
	418	&pxa3xx_device_ssp3,
d8e0db11	419	&pxa3xx_device_ssp4,
75540c1a	420	&pxa27x_device_pwm0,
75540c1a	421	&pxa27x_device_pwm1,
2c8086a5	422	};
2c8086a5	423
1da10c17 RJ	424	static const struct dma_slave_map pxa3xx_slave_map[] = {
	425	/* PXA25x, PXA27x and PXA3xx common entries */
	426	{ "pxa2xx-ac97", "pcm_pcm_mic_mono", PDMA_FILTER_PARAM(LOWEST, 8) },
	427	{ "pxa2xx-ac97", "pcm_pcm_aux_mono_in", PDMA_FILTER_PARAM(LOWEST, 9) },
	428	{ "pxa2xx-ac97", "pcm_pcm_aux_mono_out",
	429	PDMA_FILTER_PARAM(LOWEST, 10) },
	430	{ "pxa2xx-ac97", "pcm_pcm_stereo_in", PDMA_FILTER_PARAM(LOWEST, 11) },
	431	{ "pxa2xx-ac97", "pcm_pcm_stereo_out", PDMA_FILTER_PARAM(LOWEST, 12) },
	432	{ "pxa-ssp-dai.0", "rx", PDMA_FILTER_PARAM(LOWEST, 13) },
	433	{ "pxa-ssp-dai.0", "tx", PDMA_FILTER_PARAM(LOWEST, 14) },
	434	{ "pxa-ssp-dai.1", "rx", PDMA_FILTER_PARAM(LOWEST, 15) },
	435	{ "pxa-ssp-dai.1", "tx", PDMA_FILTER_PARAM(LOWEST, 16) },
	436	{ "pxa2xx-ir", "rx", PDMA_FILTER_PARAM(LOWEST, 17) },
	437	{ "pxa2xx-ir", "tx", PDMA_FILTER_PARAM(LOWEST, 18) },
	438	{ "pxa2xx-mci.0", "rx", PDMA_FILTER_PARAM(LOWEST, 21) },
	439	{ "pxa2xx-mci.0", "tx", PDMA_FILTER_PARAM(LOWEST, 22) },
	440	{ "pxa-ssp-dai.2", "rx", PDMA_FILTER_PARAM(LOWEST, 66) },
	441	{ "pxa-ssp-dai.2", "tx", PDMA_FILTER_PARAM(LOWEST, 67) },
	442
	443	/* PXA3xx specific map */
	444	{ "pxa-ssp-dai.3", "rx", PDMA_FILTER_PARAM(LOWEST, 2) },
	445	{ "pxa-ssp-dai.3", "tx", PDMA_FILTER_PARAM(LOWEST, 3) },
	446	{ "pxa2xx-mci.1", "rx", PDMA_FILTER_PARAM(LOWEST, 93) },
	447	{ "pxa2xx-mci.1", "tx", PDMA_FILTER_PARAM(LOWEST, 94) },
	448	{ "pxa3xx-nand", "data", PDMA_FILTER_PARAM(LOWEST, 97) },
	449	{ "pxa2xx-mci.2", "rx", PDMA_FILTER_PARAM(LOWEST, 100) },
	450	{ "pxa2xx-mci.2", "tx", PDMA_FILTER_PARAM(LOWEST, 101) },
	451	};
	452
	453	static struct mmp_dma_platdata pxa3xx_dma_pdata = {
	454	.dma_channels = 32,
	455	.nb_requestors = 100,
	456	.slave_map = pxa3xx_slave_map,
	457	.slave_map_cnt = ARRAY_SIZE(pxa3xx_slave_map),
	458	};
	459
2c8086a5	460	static int __init pxa3xx_init(void)
2c8086a5	461	{
2eaa03b5	462	int ret = 0;
2c8086a5	463
2c8086a5	464	if (cpu_is_pxa3xx()) {
04fef228 EM	465
	466	reset_status = ARSR;
	467
86260f98 DK	468	/*
	469	* clear RDH bit every time after reset
	470	*
	471	* Note: the last 3 bits DxS are write-1-to-clear so carefully
	472	* preserve them here in case they will be referenced later
	473	*/
	474	ASCR &= ~(ASCR_RDH \| ASCR_D1S \| ASCR_D2S \| ASCR_D3S);
	475
adf3442c RJ	476	/*
	477	* Disable DFI bus arbitration, to prevent a system bus lock if
	478	* somebody disables the NAND clock (unused clock) while this
	479	* bit remains set.
	480	*/
	481	NDCR = (NDCR & ~NDCR_ND_ARB_EN) \| NDCR_ND_ARB_CNTL;
	482
7b5dea12 RK	483	pxa3xx_init_pm();
7b5dea12 RK	484
c1c14f89 DM	485	enable_irq_wake(IRQ_WAKEUP0);
	486	if (cpu_is_pxa320())
	487	enable_irq_wake(IRQ_WAKEUP1);
	488
2eaa03b5 RW	489	register_syscore_ops(&pxa_irq_syscore_ops);
2eaa03b5 RW	490	register_syscore_ops(&pxa3xx_mfp_syscore_ops);
c0165504	491
2cab0292 HZ	492	if (of_have_populated_dt())
	493	return 0;
	494
1da10c17	495	pxa2xx_set_dmac_info(&pxa3xx_dma_pdata);
2cab0292 HZ	496	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
	497	if (ret)
	498	return ret;
b8f649f1 HZ	499	if (cpu_is_pxa300() \|\| cpu_is_pxa310() \|\| cpu_is_pxa320()) {
	500	platform_device_add_data(&pxa3xx_device_gpio,
	501	&pxa3xx_gpio_pdata,
	502	sizeof(pxa3xx_gpio_pdata));
2cab0292	503	ret = platform_device_register(&pxa3xx_device_gpio);
b8f649f1	504	}
2c8086a5	505	}
c0165504	506
c0165504	507	return ret;
2c8086a5	508	}
2c8086a5	509
1c104e0e	510	postcore_initcall(pxa3xx_init);