aiot/waterDataPreprocessing/externalListeningThread/dataMonitoring.c

/*
 *
 * arch/arm/mach-u300/core.c
 *
 *
 * Copyright (C) 2007-2012 ST-Ericsson SA
 * License terms: GNU General Public License (GPL) version 2
 * Core platform support, IRQ handling and device definitions.
 * Author: Linus Walleij <linus.walleij@stericsson.com>
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/mm.h>
#include <linux/termios.h>
#include <linux/dmaengine.h>
#include <linux/amba/bus.h>
#include <linux/amba/mmci.h>
#include <linux/amba/serial.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/fsmc.h>
#include <linux/pinctrl/machine.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/dma-mapping.h>
#include <linux/platform_data/clk-u300.h>
#include <linux/platform_data/pinctrl-coh901.h>

#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/hardware/vic.h>
#include <asm/mach/map.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>

#include <mach/coh901318.h>
#include <mach/hardware.h>
#include <mach/syscon.h>
#include <mach/irqs.h>

#include "timer.h"
#include "spi.h"
#include "i2c.h"
#include "u300-gpio.h"
#include "dma_channels.h"

/*
 * Static I/O mappings that are needed for booting the U300 platforms. The
 * only things we need are the areas where we find the timer, syscon and
 * intcon, since the remaining device drivers will map their own memory
 * physical to virtual as the need arise.
 */
static struct map_desc u300_io_desc[] __initdata = {
	{
		.virtual	= U300_SLOW_PER_VIRT_BASE,
		.pfn		= __phys_to_pfn(U300_SLOW_PER_PHYS_BASE),
		.length		= SZ_64K,
		.type		= MT_DEVICE,
	},
	{
		.virtual	= U300_AHB_PER_VIRT_BASE,
		.pfn		= __phys_to_pfn(U300_AHB_PER_PHYS_BASE),
		.length		= SZ_32K,
		.type		= MT_DEVICE,
	},
	{
		.virtual	= U300_FAST_PER_VIRT_BASE,
		.pfn		= __phys_to_pfn(U300_FAST_PER_PHYS_BASE),
		.length		= SZ_32K,
		.type		= MT_DEVICE,
	},
};

static void __init u300_map_io(void)
{
	iotable_init(u300_io_desc, ARRAY_SIZE(u300_io_desc));
}

/*
 * Declaration of devices found on the U300 board and
 * their respective memory locations.
 */

static struct amba_pl011_data uart0_plat_data = {
#ifdef CONFIG_COH901318
	.dma_filter = coh901318_filter_id,
	.dma_rx_param = (void *) U300_DMA_UART0_RX,
	.dma_tx_param = (void *) U300_DMA_UART0_TX,
#endif
};

/* Slow device at 0x3000 offset */
static AMBA_APB_DEVICE(uart0, "uart0", 0, U300_UART0_BASE,
	{ IRQ_U300_UART0 }, &uart0_plat_data);

/* The U335 have an additional UART1 on the APP CPU */
static struct amba_pl011_data uart1_plat_data = {
#ifdef CONFIG_COH901318
	.dma_filter = coh901318_filter_id,
	.dma_rx_param = (void *) U300_DMA_UART1_RX,
	.dma_tx_param = (void *) U300_DMA_UART1_TX,
#endif
};

/* Fast device at 0x7000 offset */
static AMBA_APB_DEVICE(uart1, "uart1", 0, U300_UART1_BASE,
	{ IRQ_U300_UART1 }, &uart1_plat_data);

/* AHB device at 0x4000 offset */
static AMBA_APB_DEVICE(pl172, "pl172", 0, U300_EMIF_CFG_BASE, { }, NULL);

/* Fast device at 0x6000 offset */
static AMBA_APB_DEVICE(pl022, "pl022", 0, U300_SPI_BASE,
	{ IRQ_U300_SPI }, NULL);

/* Fast device at 0x1000 offset */
#define U300_MMCSD_IRQS	{ IRQ_U300_MMCSD_MCIINTR0, IRQ_U300_MMCSD_MCIINTR1 }

static struct mmci_platform_data mmcsd_platform_data = {
	/*
	 * Do not set ocr_mask or voltage translation function,
	 * we have a regulator we can control instead.
	 */
	.f_max = 24000000,
	.gpio_wp = -1,
	.gpio_cd = U300_GPIO_PIN_MMC_CD,
	.cd_invert = true,
	.capabilities = MMC_CAP_MMC_HIGHSPEED |
	MMC_CAP_SD_HIGHSPEED | MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
#ifdef CONFIG_COH901318
	.dma_filter = coh901318_filter_id,
	.dma_rx_param = (void *) U300_DMA_MMCSD_RX_TX,
	/* Don't specify a TX channel, this RX channel is bidirectional */
#endif
};

static AMBA_APB_DEVICE(mmcsd, "mmci", 0, U300_MMCSD_BASE,
	U300_MMCSD_IRQS, &mmcsd_platform_data);

/*
 * The order of device declaration may be important, since some devices
 * have dependencies on other devices being initialized first.
 */
static struct amba_device *amba_devs[] __initdata = {
	&uart0_device,
	&uart1_device,
	&pl022_device,
	&pl172_device,
	&mmcsd_device,
};

/* Here follows a list of all hw resources that the platform devices
 * allocate. Note, clock dependencies are not included
 */

static struct resource gpio_resources[] = {
	{
		.start = U300_GPIO_BASE,
		.end   = (U300_GPIO_BASE + SZ_4K - 1),
		.flags = IORESOURCE_MEM,
	},
	{
		.name  = "gpio0",
		.start = IRQ_U300_GPIO_PORT0,
		.end   = IRQ_U300_GPIO_PORT0,
		.flags = IORESOURCE_IRQ,
	},
	{
		.name  = "gpio1",
		.start = IRQ_U300_GPIO_PORT1,
		.end   = IRQ_U300_GPIO_PORT1,
		.flags = IORESOURCE_IRQ,
	},
	{
		.name  = "gpio2",
		.start = IRQ_U300_GPIO_PORT2,
		.end   = IRQ_U300_GPIO_PORT2,
		.flags = IORESOURCE_IRQ,
	},
	{
		.name  = "gpio3",
		.start = IRQ_U300_GPIO_PORT3,
		.end   = IRQ_U300_GPIO_PORT3,
		.flags = IORESOURCE_IRQ,
	},
	{
		.name  = "gpio4",
		.start = IRQ_U300_GPIO_PORT4,
		.end   = IRQ_U300_GPIO_PORT4,
		.flags = IORESOURCE_IRQ,
	},
	{
		.name  = "gpio5",
		.start = IRQ_U300_GPIO_PORT5,
		.end   = IRQ_U300_GPIO_PORT5,
		.flags = IORESOURCE_IRQ,
	},
	{
		.name  = "gpio6",
		.start = IRQ_U300_GPIO_PORT6,
		.end   = IRQ_U300_GPIO_PORT6,
		.flags = IORESOURCE_IRQ,
	},
};

static struct resource keypad_resources[] = {
	{
		.start = U300_KEYPAD_BASE,
		.end   = U300_KEYPAD_BASE + SZ_4K - 1,
		.flags = IORESOURCE_MEM,
	},
	{
		.name  = "coh901461-press",
		.start = IRQ_U300_KEYPAD_KEYBF,
		.end   = IRQ_U300_KEYPAD_KEYBF,
		.flags = IORESOURCE_IRQ,
	},
	{
		.name  = "coh901461-release",
		.start = IRQ_U300_KEYPAD_KEYBR,
		.end   = IRQ_U300_KEYPAD_KEYBR,
		.flags = IORESOURCE_IRQ,
	},
};

static struct resource rtc_resources[] = {
	{
		.start = U300_RTC_BASE,
		.end   = U300_RTC_BASE + SZ_4K - 1,
		.flags = IORESOURCE_MEM,
	},
	{
		.start = IRQ_U300_RTC,
		.end   = IRQ_U300_RTC,
		.flags = IORESOURCE_IRQ,
	},
};

/*
 * Fsmc does have IRQs: #43 and #44 (NFIF and NFIF2)
 * but these are not yet used by the driver.
 */
static struct resource fsmc_resources[] = {
	{
		.name  = "nand_addr",
		.start = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_ALE,
		.end   = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_ALE + SZ_16K - 1,
		.flags = IORESOURCE_MEM,
	},
	{
		.name  = "nand_cmd",
		.start = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_CLE,
		.end   = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_CLE + SZ_16K - 1,
		.flags = IORESOURCE_MEM,
	},
	{
		.name  = "nand_data",
		.start = U300_NAND_CS0_PHYS_BASE,
		.end   = U300_NAND_CS0_PHYS_BASE + SZ_16K - 1,
		.flags = IORESOURCE_MEM,
	},
	{
		.name  = "fsmc_regs",
		.start = U300_NAND_IF_PHYS_BASE,
		.end   = U300_NAND_IF_PHYS_BASE + SZ_4K - 1,
		.flags = IORESOURCE_MEM,
	},
};

static struct resource i2c0_resources[] = {
	{
		.start = U300_I2C0_BASE,
		.end   = U300_I2C0_BASE + SZ_4K - 1,
		.flags = IORESOURCE_MEM,
	},
	{
		.start = IRQ_U300_I2C0,
		.end   = IRQ_U300_I2C0,
		.flags = IORESOURCE_IRQ,
	},
};

static struct resource i2c1_resources[] = {
	{
		.start = U300_I2C1_BASE,
		.end   = U300_I2C1_BASE + SZ_4K - 1,
		.flags = IORESOURCE_MEM,
	},
	{
		.start = IRQ_U300_I2C1,
		.end   = IRQ_U300_I2C1,
		.flags = IORESOURCE_IRQ,
	},

};

static struct resource wdog_resources[] = {
	{
		.start = U300_WDOG_BASE,
		.end   = U300_WDOG_BASE + SZ_4K - 1,
		.flags = IORESOURCE_MEM,
	},
	{
		.start = IRQ_U300_WDOG,
		.end   = IRQ_U300_WDOG,
		.flags = IORESOURCE_IRQ,
	}
};

static struct resource dma_resource[] = {
	{
		.start = U300_DMAC_BASE,
		.end = U300_DMAC_BASE + PAGE_SIZE - 1,
		.flags =  IORESOURCE_MEM,
	},
	{
		.start = IRQ_U300_DMA,
		.end = IRQ_U300_DMA,
		.flags =  IORESOURCE_IRQ,
	}
};

/* points out all dma slave channels.
 * Syntax is [A1, B1, A2, B2, .... ,-1,-1]
 * Select all channels from A to B, end of list is marked with -1,-1
 */
static int dma_slave_channels[] = {