Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 264 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
new file mode 100644
index 000000000..ab8808ce7
--- /dev/null
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -0,0 +1,264 @@
+/*
+ *  linux/arch/arm/mach-pxa/pxa25x.c
+ *
+ *  Author:	Nicolas Pitre
+ *  Created:	Jun 15, 2001
+ *  Copyright:	MontaVista Software Inc.
+ *
+ * Code specific to PXA21x/25x/26x variants.
+ *
+ * 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.
+ *
+ * Since this file should be linked before any other machine specific file,
+ * the __initcall() here will be executed first.  This serves as default
+ * initialization stuff for PXA machines which can be overridden later if
+ * need be.
+ */
+#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/platform_device.h>
+#include <linux/suspend.h>
+#include <linux/syscore_ops.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/platform_data/mmp_dma.h>
+
+#include <asm/mach/map.h>
+#include <asm/suspend.h>
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include "pxa25x.h"
+#include <mach/reset.h>
+#include "pm.h"
+#include <mach/dma.h>
+#include <mach/smemc.h>
+
+#include "generic.h"
+#include "devices.h"
+
+/*
+ * Various clock factors driven by the CCCR register.
+ */
+
+#ifdef CONFIG_PM
+
+#define SAVE(x)		sleep_save[SLEEP_SAVE_##x] = x
+#define RESTORE(x)	x = sleep_save[SLEEP_SAVE_##x]
+
+/*
+ * 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_COUNT
+};
+
+
+static void pxa25x_cpu_pm_save(unsigned long *sleep_save)
+{
+	SAVE(PSTR);
+}
+
+static void pxa25x_cpu_pm_restore(unsigned long *sleep_save)
+{
+	RESTORE(PSTR);
+}
+
+static void pxa25x_cpu_pm_enter(suspend_state_t state)
+{
+	/* Clear reset status */
+	RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
+
+	switch (state) {
+	case PM_SUSPEND_MEM:
+		cpu_suspend(PWRMODE_SLEEP, pxa25x_finish_suspend);
+		break;
+	}
+}
+
+static int pxa25x_cpu_pm_prepare(void)
+{
+	/* set resume return address */
+	PSPR = __pa_symbol(cpu_resume);
+	return 0;
+}
+
+static void pxa25x_cpu_pm_finish(void)
+{
+	/* ensure not to come back here if it wasn't intended */
+	PSPR = 0;
+}
+
+static struct pxa_cpu_pm_fns pxa25x_cpu_pm_fns = {
+	.save_count	= SLEEP_SAVE_COUNT,
+	.valid		= suspend_valid_only_mem,
+	.save		= pxa25x_cpu_pm_save,
+	.restore	= pxa25x_cpu_pm_restore,
+	.enter		= pxa25x_cpu_pm_enter,
+	.prepare	= pxa25x_cpu_pm_prepare,
+	.finish		= pxa25x_cpu_pm_finish,
+};
+
+static void __init pxa25x_init_pm(void)
+{
+	pxa_cpu_pm_fns = &pxa25x_cpu_pm_fns;
+}
+#else
+static inline void pxa25x_init_pm(void) {}
+#endif
+
+/* PXA25x: supports wakeup from GPIO0..GPIO15 and RTC alarm
+ */
+
+static int pxa25x_set_wake(struct irq_data *d, unsigned int on)
+{
+	int gpio = pxa_irq_to_gpio(d->irq);
+	uint32_t mask = 0;
+
+	if (gpio >= 0 && gpio < 85)
+		return gpio_set_wake(gpio, on);
+
+	if (d->irq == IRQ_RTCAlrm) {
+		mask = PWER_RTC;
+		goto set_pwer;
+	}
+
+	return -EINVAL;
+
+set_pwer:
+	if (on)
+		PWER |= mask;
+	else
+		PWER &=~mask;
+
+	return 0;
+}
+
+void __init pxa25x_init_irq(void)
+{
+	pxa_init_irq(32, pxa25x_set_wake);
+}
+
+#ifdef CONFIG_CPU_PXA26x
+void __init pxa26x_init_irq(void)
+{
+	pxa_init_irq(32, pxa25x_set_wake);
+}
+#endif
+
+static int __init __init
+pxa25x_dt_init_irq(struct device_node *node, struct device_node *parent)
+{
+	pxa_dt_irq_init(pxa25x_set_wake);
+	set_handle_irq(icip_handle_irq);
+
+	return 0;
+}
+IRQCHIP_DECLARE(pxa25x_intc, "marvell,pxa-intc", pxa25x_dt_init_irq);
+
+static struct map_desc pxa25x_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 pxa25x_map_io(void)
+{
+	pxa_map_io();
+	iotable_init(ARRAY_AND_SIZE(pxa25x_io_desc));
+	pxa25x_get_clk_frequency_khz(1);
+}
+
+static struct pxa_gpio_platform_data pxa25x_gpio_info __initdata = {
+	.irq_base	= PXA_GPIO_TO_IRQ(0),
+	.gpio_set_wake	= gpio_set_wake,
+};
+
+static struct platform_device *pxa25x_devices[] __initdata = {
+	&pxa25x_device_udc,
+	&pxa_device_pmu,
+	&pxa_device_i2s,
+	&sa1100_device_rtc,
+	&pxa25x_device_ssp,
+	&pxa25x_device_nssp,
+	&pxa25x_device_assp,
+	&pxa25x_device_pwm0,
+	&pxa25x_device_pwm1,
+	&pxa_device_asoc_platform,
+};
+
+static const struct dma_slave_map pxa25x_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.1", "rx", PDMA_FILTER_PARAM(LOWEST, 13) },
+	{ "pxa-ssp-dai.1", "tx", PDMA_FILTER_PARAM(LOWEST, 14) },
+	{ "pxa-ssp-dai.2", "rx", PDMA_FILTER_PARAM(LOWEST, 15) },
+	{ "pxa-ssp-dai.2", "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) },
+
+	/* PXA25x specific map */
+	{ "pxa25x-ssp.0", "rx", PDMA_FILTER_PARAM(LOWEST, 13) },
+	{ "pxa25x-ssp.0", "tx", PDMA_FILTER_PARAM(LOWEST, 14) },
+	{ "pxa25x-nssp.1", "rx", PDMA_FILTER_PARAM(LOWEST, 15) },
+	{ "pxa25x-nssp.1", "tx", PDMA_FILTER_PARAM(LOWEST, 16) },
+	{ "pxa25x-nssp.2", "rx", PDMA_FILTER_PARAM(LOWEST, 23) },
+	{ "pxa25x-nssp.2", "tx", PDMA_FILTER_PARAM(LOWEST, 24) },
+};
+
+static struct mmp_dma_platdata pxa25x_dma_pdata = {
+	.dma_channels	= 16,
+	.nb_requestors	= 40,
+	.slave_map	= pxa25x_slave_map,
+	.slave_map_cnt	= ARRAY_SIZE(pxa25x_slave_map),
+};
+
+static int __init pxa25x_init(void)
+{
+	int ret = 0;
+
+	if (cpu_is_pxa25x()) {
+
+		reset_status = RCSR;
+
+		pxa25x_init_pm();
+
+		register_syscore_ops(&pxa_irq_syscore_ops);
+		register_syscore_ops(&pxa2xx_mfp_syscore_ops);
+
+		if (!of_have_populated_dt()) {
+			pxa2xx_set_dmac_info(&pxa25x_dma_pdata);
+			pxa_register_device(&pxa25x_device_gpio, &pxa25x_gpio_info);
+			ret = platform_add_devices(pxa25x_devices,
+						   ARRAY_SIZE(pxa25x_devices));
+		}
+	}
+
+	return ret;
+}
+
+postcore_initcall(pxa25x_init);