arch/arm/mach-pxa/pxa27x.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/arch/arm/mach-pxa/pxa27x.c
  *
  *  Author:	Nicolas Pitre
  *  Created:	Nov 05, 2002
  *  Copyright:	MontaVista Software Inc.
  *
  * Code specific to PXA27x aka Bulverde.
  */
 #include <linux/dmaengine.h>
 #include <linux/dma/pxa-dma.h>
 #include <linux/gpio.h>
 #include <linux/gpio-pxa.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/irqchip.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/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/irq.h>
 #include <asm/suspend.h>
 #include "irqs.h"
 #include "pxa27x.h"
 #include "reset.h"
 #include <linux/platform_data/usb-ohci-pxa27x.h>
 #include "pm.h"
 #include "addr-map.h"
 #include "smemc.h"

 #include "generic.h"
 #include "devices.h"
 #include <linux/clk-provider.h>
 #include <linux/clkdev.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_AC97_nRESET_GPIO_HIGH,
 	GPIO113_AC97_nRESET,
 	GPIO95_AC97_nRESET_GPIO_HIGH,
 	GPIO95_AC97_nRESET,
 };

 void pxa27x_configure_ac97reset(int reset_gpio, bool to_gpio)
 {
 	/*
 	 * This helper function is used to work around a bug in the pxa27x's
 	 * ac97 controller during a warm reset.  The configuration of the
 	 * reset_gpio is changed as follows:
 	 * to_gpio == true: configured to generic output gpio and driven high
 	 * to_gpio == false: configured to ac97 controller alt fn AC97_nRESET
 	 */

 	if (reset_gpio == 113)
 		pxa2xx_mfp_config(to_gpio ? &ac97_reset_config[0] :
 				  &ac97_reset_config[1], 1);

 	if (reset_gpio == 95)
 		pxa2xx_mfp_config(to_gpio ? &ac97_reset_config[2] :
 				  &ac97_reset_config[3], 1);
 }
 EXPORT_SYMBOL_GPL(pxa27x_configure_ac97reset);

 #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 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(".arch_extension xscale\n\t"
 		     "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(".arch_extension xscale\n\t"
 			     "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 = __pa_symbol(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 int __init
 pxa27x_dt_init_irq(struct device_node *node, struct device_node *parent)
 {
 	pxa_dt_irq_init(pxa27x_set_wake);
 	set_handle_irq(ichp_handle_irq);

 	return 0;
 }
 IRQCHIP_DECLARE(pxa27x_intc, "marvell,pxa-intc", pxa27x_dt_init_irq);

 static struct map_desc pxa27x_io_desc[] __initdata = {
 	{	/* Mem Ctl */
 		.virtual	= (unsigned long)SMEMC_VIRT,
 		.pfn		= __phys_to_pfn(PXA2XX_SMEMC_BASE),
 		.length		= SMEMC_SIZE,
 		.type		= MT_DEVICE
 	}, {	/* UNCACHED_PHYS_0 */
 		.virtual	= UNCACHED_PHYS_0,
 		.pfn		= __phys_to_pfn(0x00000000),
 		.length		= UNCACHED_PHYS_0_SIZE,
 		.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 = {
 	.irq_base	= PXA_GPIO_TO_IRQ(0),
 	.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,
 	&pxa_device_rtc,
 	&pxa27x_device_ssp1,
 	&pxa27x_device_ssp2,
 	&pxa27x_device_ssp3,
 	&pxa27x_device_pwm0,
 	&pxa27x_device_pwm1,
 };

 static const struct dma_slave_map pxa27x_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) },

 	/* PXA27x specific map */
 	{ "pxa2xx-i2s", "rx", PDMA_FILTER_PARAM(LOWEST, 2) },
 	{ "pxa2xx-i2s", "tx", PDMA_FILTER_PARAM(LOWEST, 3) },
 	{ "pxa27x-camera.0", "CI_Y", PDMA_FILTER_PARAM(HIGHEST, 68) },
 	{ "pxa27x-camera.0", "CI_U", PDMA_FILTER_PARAM(HIGHEST, 69) },
 	{ "pxa27x-camera.0", "CI_V", PDMA_FILTER_PARAM(HIGHEST, 70) },
 };

 static struct mmp_dma_platdata pxa27x_dma_pdata = {
 	.dma_channels	= 32,
 	.nb_requestors	= 75,
 	.slave_map	= pxa27x_slave_map,
 	.slave_map_cnt	= ARRAY_SIZE(pxa27x_slave_map),
 };

 static int __init pxa27x_init(void)
 {
 	int ret = 0;

 	if (cpu_is_pxa27x()) {

 		pxa_register_wdt(RCSR);

 		pxa27x_init_pm();

 		register_syscore_ops(&pxa_irq_syscore_ops);
 		register_syscore_ops(&pxa2xx_mfp_syscore_ops);

 		if (!of_have_populated_dt()) {
 			pxa_register_device(&pxa27x_device_gpio,
 					    &pxa27x_gpio_info);
 			pxa2xx_set_dmac_info(&pxa27x_dma_pdata);
 			ret = platform_add_devices(devices,
 						   ARRAY_SIZE(devices));
 		}
 	}

 	return ret;
 }

 postcore_initcall(pxa27x_init);
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* linux/arch/arm/mach-pxa/pxa27x.c
	*
	* Author: Nicolas Pitre
	* Created: Nov 05, 2002
	* Copyright: MontaVista Software Inc.
	*
	* Code specific to PXA27x aka Bulverde.
	*/
	#include <linux/dmaengine.h>
	#include <linux/dma/pxa-dma.h>
	#include <linux/gpio.h>
	#include <linux/gpio-pxa.h>
	#include <linux/module.h>
	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/irqchip.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/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/irq.h>
	#include <asm/suspend.h>
	#include "irqs.h"
	#include "pxa27x.h"
	#include "reset.h"
	#include <linux/platform_data/usb-ohci-pxa27x.h>
	#include "pm.h"
	#include "addr-map.h"
	#include "smemc.h"

	#include "generic.h"
	#include "devices.h"
	#include <linux/clk-provider.h>
	#include <linux/clkdev.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_AC97_nRESET_GPIO_HIGH,
	GPIO113_AC97_nRESET,
	GPIO95_AC97_nRESET_GPIO_HIGH,
	GPIO95_AC97_nRESET,
	};

	void pxa27x_configure_ac97reset(int reset_gpio, bool to_gpio)
	{
	/*
	* This helper function is used to work around a bug in the pxa27x's
	* ac97 controller during a warm reset. The configuration of the
	* reset_gpio is changed as follows:
	* to_gpio == true: configured to generic output gpio and driven high
	* to_gpio == false: configured to ac97 controller alt fn AC97_nRESET
	*/

	if (reset_gpio == 113)
	pxa2xx_mfp_config(to_gpio ? &ac97_reset_config[0] :
	&ac97_reset_config[1], 1);

	if (reset_gpio == 95)
	pxa2xx_mfp_config(to_gpio ? &ac97_reset_config[2] :
	&ac97_reset_config[3], 1);
	}
	EXPORT_SYMBOL_GPL(pxa27x_configure_ac97reset);

	#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 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(".arch_extension xscale\n\t"
	"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(".arch_extension xscale\n\t"
	"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 = __pa_symbol(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 int __init
	pxa27x_dt_init_irq(struct device_node node, struct device_node parent)
	{
	pxa_dt_irq_init(pxa27x_set_wake);
	set_handle_irq(ichp_handle_irq);

	return 0;
	}
	IRQCHIP_DECLARE(pxa27x_intc, "marvell,pxa-intc", pxa27x_dt_init_irq);

	static struct map_desc pxa27x_io_desc[] __initdata = {
	{ /* Mem Ctl */
	.virtual = (unsigned long)SMEMC_VIRT,
	.pfn = __phys_to_pfn(PXA2XX_SMEMC_BASE),
	.length = SMEMC_SIZE,
	.type = MT_DEVICE
	}, { /* UNCACHED_PHYS_0 */
	.virtual = UNCACHED_PHYS_0,
	.pfn = __phys_to_pfn(0x00000000),
	.length = UNCACHED_PHYS_0_SIZE,
	.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 = {
	.irq_base = PXA_GPIO_TO_IRQ(0),
	.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,
	&pxa_device_rtc,
	&pxa27x_device_ssp1,
	&pxa27x_device_ssp2,
	&pxa27x_device_ssp3,
	&pxa27x_device_pwm0,
	&pxa27x_device_pwm1,
	};

	static const struct dma_slave_map pxa27x_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) },

	/* PXA27x specific map */
	{ "pxa2xx-i2s", "rx", PDMA_FILTER_PARAM(LOWEST, 2) },
	{ "pxa2xx-i2s", "tx", PDMA_FILTER_PARAM(LOWEST, 3) },
	{ "pxa27x-camera.0", "CI_Y", PDMA_FILTER_PARAM(HIGHEST, 68) },
	{ "pxa27x-camera.0", "CI_U", PDMA_FILTER_PARAM(HIGHEST, 69) },
	{ "pxa27x-camera.0", "CI_V", PDMA_FILTER_PARAM(HIGHEST, 70) },
	};

	static struct mmp_dma_platdata pxa27x_dma_pdata = {
	.dma_channels = 32,
	.nb_requestors = 75,
	.slave_map = pxa27x_slave_map,
	.slave_map_cnt = ARRAY_SIZE(pxa27x_slave_map),
	};

	static int __init pxa27x_init(void)
	{
	int ret = 0;

	if (cpu_is_pxa27x()) {

	pxa_register_wdt(RCSR);

	pxa27x_init_pm();

	register_syscore_ops(&pxa_irq_syscore_ops);
	register_syscore_ops(&pxa2xx_mfp_syscore_ops);

	if (!of_have_populated_dt()) {
	pxa_register_device(&pxa27x_device_gpio,
	&pxa27x_gpio_info);
	pxa2xx_set_dmac_info(&pxa27x_dma_pdata);
	ret = platform_add_devices(devices,
	ARRAY_SIZE(devices));
	}
	}

	return ret;
	}

	postcore_initcall(pxa27x_init);