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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/arm/mach-ux500/cpu-db8500.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/arm/mach-ux500/cpu-db8500.c')
-rw-r--r--arch/arm/mach-ux500/cpu-db8500.c208
1 files changed, 208 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c
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+/*
+ * Copyright (C) 2008-2009 ST-Ericsson SA
+ *
+ * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
+ *
+ * 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/types.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/amba/bus.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <asm/mach/map.h>
+#include <asm/pmu.h>
+#include <plat/gpio-nomadik.h>
+#include <mach/hardware.h>
+#include <mach/setup.h>
+#include <mach/devices.h>
+#include <mach/usb.h>
+#include <mach/db8500-regs.h>
+
+#include "devices-db8500.h"
+#include "ste-dma40-db8500.h"
+
+/* minimum static i/o mapping required to boot U8500 platforms */
+static struct map_desc u8500_uart_io_desc[] __initdata = {
+ __IO_DEV_DESC(U8500_UART0_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_UART2_BASE, SZ_4K),
+};
+
+static struct map_desc u8500_io_desc[] __initdata = {
+ /* SCU base also covers GIC CPU BASE and TWD with its 4K page */
+ __IO_DEV_DESC(U8500_SCU_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_GIC_DIST_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_L2CC_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_BACKUPRAM0_BASE, SZ_8K),
+
+ __IO_DEV_DESC(U8500_CLKRST1_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_CLKRST2_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_CLKRST3_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_CLKRST5_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_CLKRST6_BASE, SZ_4K),
+
+ __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_GPIO0_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_GPIO1_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_GPIO3_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K),
+};
+
+void __init u8500_map_io(void)
+{
+ /*
+ * Map the UARTs early so that the DEBUG_LL stuff continues to work.
+ */
+ iotable_init(u8500_uart_io_desc, ARRAY_SIZE(u8500_uart_io_desc));
+
+ ux500_map_io();
+
+ iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc));
+
+ _PRCMU_BASE = __io_address(U8500_PRCMU_BASE);
+}
+
+static struct resource db8500_pmu_resources[] = {
+ [0] = {
+ .start = IRQ_DB8500_PMU,
+ .end = IRQ_DB8500_PMU,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+/*
+ * The PMU IRQ lines of two cores are wired together into a single interrupt.
+ * Bounce the interrupt to the other core if it's not ours.
+ */
+static irqreturn_t db8500_pmu_handler(int irq, void *dev, irq_handler_t handler)
+{
+ irqreturn_t ret = handler(irq, dev);
+ int other = !smp_processor_id();
+
+ if (ret == IRQ_NONE && cpu_online(other))
+ irq_set_affinity(irq, cpumask_of(other));
+
+ /*
+ * We should be able to get away with the amount of IRQ_NONEs we give,
+ * while still having the spurious IRQ detection code kick in if the
+ * interrupt really starts hitting spuriously.
+ */
+ return ret;
+}
+
+static struct arm_pmu_platdata db8500_pmu_platdata = {
+ .handle_irq = db8500_pmu_handler,
+};
+
+static struct platform_device db8500_pmu_device = {
+ .name = "arm-pmu",
+ .id = ARM_PMU_DEVICE_CPU,
+ .num_resources = ARRAY_SIZE(db8500_pmu_resources),
+ .resource = db8500_pmu_resources,
+ .dev.platform_data = &db8500_pmu_platdata,
+};
+
+static struct platform_device db8500_prcmu_device = {
+ .name = "db8500-prcmu",
+};
+
+static struct platform_device *platform_devs[] __initdata = {
+ &u8500_dma40_device,
+ &db8500_pmu_device,
+ &db8500_prcmu_device,
+};
+
+static resource_size_t __initdata db8500_gpio_base[] = {
+ U8500_GPIOBANK0_BASE,
+ U8500_GPIOBANK1_BASE,
+ U8500_GPIOBANK2_BASE,
+ U8500_GPIOBANK3_BASE,
+ U8500_GPIOBANK4_BASE,
+ U8500_GPIOBANK5_BASE,
+ U8500_GPIOBANK6_BASE,
+ U8500_GPIOBANK7_BASE,
+ U8500_GPIOBANK8_BASE,
+};
+
+static void __init db8500_add_gpios(struct device *parent)
+{
+ struct nmk_gpio_platform_data pdata = {
+ .supports_sleepmode = true,
+ };
+
+ dbx500_add_gpios(parent, ARRAY_AND_SIZE(db8500_gpio_base),
+ IRQ_DB8500_GPIO0, &pdata);
+}
+
+static int usb_db8500_rx_dma_cfg[] = {
+ DB8500_DMA_DEV38_USB_OTG_IEP_1_9,
+ DB8500_DMA_DEV37_USB_OTG_IEP_2_10,
+ DB8500_DMA_DEV36_USB_OTG_IEP_3_11,
+ DB8500_DMA_DEV19_USB_OTG_IEP_4_12,
+ DB8500_DMA_DEV18_USB_OTG_IEP_5_13,
+ DB8500_DMA_DEV17_USB_OTG_IEP_6_14,
+ DB8500_DMA_DEV16_USB_OTG_IEP_7_15,
+ DB8500_DMA_DEV39_USB_OTG_IEP_8
+};
+
+static int usb_db8500_tx_dma_cfg[] = {
+ DB8500_DMA_DEV38_USB_OTG_OEP_1_9,
+ DB8500_DMA_DEV37_USB_OTG_OEP_2_10,
+ DB8500_DMA_DEV36_USB_OTG_OEP_3_11,
+ DB8500_DMA_DEV19_USB_OTG_OEP_4_12,
+ DB8500_DMA_DEV18_USB_OTG_OEP_5_13,
+ DB8500_DMA_DEV17_USB_OTG_OEP_6_14,
+ DB8500_DMA_DEV16_USB_OTG_OEP_7_15,
+ DB8500_DMA_DEV39_USB_OTG_OEP_8
+};
+
+static const char *db8500_read_soc_id(void)
+{
+ void __iomem *uid = __io_address(U8500_BB_UID_BASE);
+
+ return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x",
+ readl((u32 *)uid+1),
+ readl((u32 *)uid+1), readl((u32 *)uid+2),
+ readl((u32 *)uid+3), readl((u32 *)uid+4));
+}
+
+static struct device * __init db8500_soc_device_init(void)
+{
+ const char *soc_id = db8500_read_soc_id();
+
+ return ux500_soc_device_init(soc_id);
+}
+
+/*
+ * This function is called from the board init
+ */
+struct device * __init u8500_init_devices(void)
+{
+ struct device *parent;
+ int i;
+
+ parent = db8500_soc_device_init();
+
+ db8500_add_rtc(parent);
+ db8500_add_gpios(parent);
+ db8500_add_usb(parent, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg);
+
+ platform_device_register_data(parent,
+ "cpufreq-u8500", -1, NULL, 0);
+
+ for (i = 0; i < ARRAY_SIZE(platform_devs); i++)
+ platform_devs[i]->dev.parent = parent;
+
+ platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
+
+ return parent;
+}