/kernel-2.6.29/arch/arm/mach-omap2/board-omap3beagle.c

/*
 * linux/arch/arm/mach-omap2/board-omap3beagle.c
 *
 * Copyright (C) 2008 Texas Instruments
 *
 * Modified from mach-omap2/board-3430sdp.c
 *
 * Initial code: Syed Mohammed Khasim
 *
 * 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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand.h>

#include <linux/regulator/machine.h>
#include <linux/i2c/twl4030.h>
#include <linux/omapfb.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>

#include <mach/board.h>
#include <mach/usb.h>
#include <mach/common.h>
#include <mach/gpmc.h>
#include <mach/nand.h>
#include <mach/mux.h>
#include <mach/display.h>

#include <linux/spi/spi.h>
#include <socketcan/can/platform/stm32bb.h>

#include "twl4030-generic-scripts.h"
#include "mmc-twl4030.h"


#define GPMC_CS0_BASE  0x60
#define GPMC_CS_SIZE   0x30

#define NAND_BLOCK_SIZE		SZ_128K

static struct mtd_partition omap3beagle_nand_partitions[] = {
	/* All the partition sizes are listed in terms of NAND block size */
	{
		.name		= "X-Loader",
		.offset		= 0,
		.size		= 4 * NAND_BLOCK_SIZE,
		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
	},
	{
		.name		= "U-Boot",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
		.size		= 15 * NAND_BLOCK_SIZE,
		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
	},
	{
		.name		= "U-Boot Env",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x260000 */
		.size		= 1 * NAND_BLOCK_SIZE,
	},
	{
		.name		= "Kernel",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
		.size		= 32 * NAND_BLOCK_SIZE,
	},
	{
		.name		= "File System",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
		.size		= MTDPART_SIZ_FULL,
	},
};

static struct omap_nand_platform_data omap3beagle_nand_data = {
	.options	= NAND_BUSWIDTH_16,
	.parts		= omap3beagle_nand_partitions,
	.nr_parts	= ARRAY_SIZE(omap3beagle_nand_partitions),
	.dma_channel	= -1,		/* disable DMA in OMAP NAND driver */
	.nand_setup	= NULL,
	.dev_ready	= NULL,
};

static struct resource omap3beagle_nand_resource = {
	.flags		= IORESOURCE_MEM,
};

static struct platform_device omap3beagle_nand_device = {
	.name		= "omap2-nand",
	.id		= -1,
	.dev		= {
		.platform_data	= &omap3beagle_nand_data,
	},
	.num_resources	= 1,
	.resource	= &omap3beagle_nand_resource,
};

#include "sdram-micron-mt46h32m32lf-6.h"

static struct omap_uart_config omap3_beagle_uart_config __initdata = {
	.enabled_uarts	= ((1 << 0) | (1 << 1) | (1 << 2)),
};

static struct twl4030_usb_data beagle_usb_data = {
	.usb_mode	= T2_USB_MODE_ULPI,
};

static struct twl4030_hsmmc_info mmc[] = {
	{
		.mmc		= 1,
		.wires		= 8,
		.gpio_wp	= 29,
	},
	{}	/* Terminator */
};

static struct regulator_consumer_supply beagle_vmmc1_supply = {
	.supply			= "vmmc",
};

static struct regulator_consumer_supply beagle_vsim_supply = {
	.supply			= "vmmc_aux",
};

static struct gpio_led gpio_leds[];

static int beagle_twl_gpio_setup(struct device *dev,
		unsigned gpio, unsigned ngpio)
{
	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
	omap_cfg_reg(AH8_34XX_GPIO29);
	mmc[0].gpio_cd = gpio + 0;
	twl4030_mmc_init(mmc);

	/* link regulators to MMC adapters */
	beagle_vmmc1_supply.dev = mmc[0].dev;
	beagle_vsim_supply.dev = mmc[0].dev;

	/* REVISIT: need ehci-omap hooks for external VBUS
	 * power switch and overcurrent detect
	 */

#if 0 /* TODO: This needs to be modified to not rely on u-boot */
	gpio_request(gpio + 1, "EHCI_nOC");
	gpio_direction_input(gpio + 1);

	/* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
	gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
	gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
#endif

	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
	return 0;
}

static struct twl4030_gpio_platform_data beagle_gpio_data = {
	.gpio_base	= OMAP_MAX_GPIO_LINES,
	.irq_base	= TWL4030_GPIO_IRQ_BASE,
	.irq_end	= TWL4030_GPIO_IRQ_END,
	.use_leds	= true,
	.pullups	= BIT(1),
	.pulldowns	= BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
				| BIT(15) | BIT(16) | BIT(17),
	.setup		= beagle_twl_gpio_setup,
};

static struct platform_device omap3_beagle_lcd_device = {
	.name		= "omap3beagle_lcd",
	.id		= -1,
};

static struct regulator_consumer_supply beagle_vdac_supply = {
	.supply		= "vdac",
	.dev		= &omap3_beagle_lcd_device.dev,
};

static struct regulator_consumer_supply beagle_vdvi_supply = {
	.supply		= "vdvi",
	.dev		= &omap3_beagle_lcd_device.dev,
};

/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data beagle_vmmc1 = {
	.constraints = {
		.min_uV			= 1850000,
		.max_uV			= 3150000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
					| REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= 1,
	.consumer_supplies	= &beagle_vmmc1_supply,
};

/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
static struct regulator_init_data beagle_vsim = {
	.constraints = {
		.min_uV			= 1800000,
		.max_uV			= 3000000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
					| REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= 1,
	.consumer_supplies	= &beagle_vsim_supply,
};

/* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
static struct regulator_init_data beagle_vdac = {
	.constraints = {
		.min_uV			= 1800000,
		.max_uV			= 1800000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= 1,
	.consumer_supplies	= &beagle_vdac_supply,
};

/* VPLL2 for digital video outputs */
static struct regulator_init_data beagle_vpll2 = {
	.constraints = {
		.name			= "VDVI",
		.min_uV			= 1800000,
		.max_uV			= 1800000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= 1,
	.consumer_supplies	= &beagle_vdvi_supply,
};

static const struct twl4030_resconfig beagle_resconfig[] = {
	/* disable regulators that u-boot left enabled; the
	 * devices' drivers should be managing these.
	 */
	{ .resource = RES_VAUX3, },	/* not even connected! */
	{ .resource = RES_VMMC1, },
	{ .resource = RES_VSIM, },
	{ .resource = RES_VPLL2, },
	{ .resource = RES_VDAC, },
	{ .resource = RES_VUSB_1V5, },
	{ .resource = RES_VUSB_1V8, },
	{ .resource = RES_VUSB_3V1, },
	{ 0, },
};

static struct twl4030_power_data beagle_power_data = {
	.resource_config	= beagle_resconfig,
	/* REVISIT can't use GENERIC3430_T2SCRIPTS_DATA;
	 * among other things, it makes reboot fail.
	 */
};

static struct twl4030_platform_data beagle_twldata = {
	.irq_base	= TWL4030_IRQ_BASE,
	.irq_end	= TWL4030_IRQ_END,

	/* platform_data for children goes here */
	.usb		= &beagle_usb_data,
	.gpio		= &beagle_gpio_data,
	.power		= &beagle_power_data,
	.vmmc1		= &beagle_vmmc1,
	.vsim		= &beagle_vsim,
	.vdac		= &beagle_vdac,
	.vpll2		= &beagle_vpll2,
};

static struct i2c_board_info __initdata beagle_i2c_rtc[] = {
	{
		I2C_BOARD_INFO("pcf8563", 0x51),
	},
};

static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
	{
		I2C_BOARD_INFO("twl4030", 0x48),
		.flags = I2C_CLIENT_WAKE,
		.irq = INT_34XX_SYS_NIRQ,
		.platform_data = &beagle_twldata,
	},
};

static int __init omap3_beagle_i2c_init(void)
{
	omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
			ARRAY_SIZE(beagle_i2c_boardinfo));
	omap_register_i2c_bus(2, 100, beagle_i2c_rtc,
			ARRAY_SIZE(beagle_i2c_rtc));
	/* Bus 3 is attached to the DVI port where devices like the pico DLP
	 * projector don't work reliably with 400kHz */
	omap_register_i2c_bus(3, 100, NULL, 0);
	return 0;
}

/* SPI */
static int stm32bb_setup(struct spi_device *spi)
{
	/* irq pin */
	gpio_request(157, "stm32bb_irq");
	gpio_direction_input(157);

	/* data ready pin */
	gpio_request(140, "stm32bb_dr");
	gpio_direction_input(140);
	return 0;
}

static struct stm32bb_platform_data stm32bb_info = {
	.board_specific_setup	= &stm32bb_setup,
	.transfer_ready		= OMAP_GPIO_IRQ(140)
};

static struct spi_board_info beagle_spi_board_info[] = {
	{
		.modalias	= "stm32bb",
		.platform_data	= &stm32bb_info,
		.irq		= OMAP_GPIO_IRQ(157),
		.max_speed_hz	= 20*1000*1000,
		.chip_select	= 0,
		.bus_num	= 3,
		.mode		= SPI_MODE_0,
	},
	{
		.modalias	= "enc424j600",
		.chip_select	= 0,
		.irq		= OMAP_GPIO_IRQ(141),
		.max_speed_hz	= 14*1000*1000,
		.bus_num	= 4,
		.mode = SPI_MODE_0 | SPI_CS_HIGH,
	},
};


static void __init omap3_beagle_init_irq(void)
{
	omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
	omap_init_irq();
	omap_gpio_init();
}

static struct gpio_led gpio_leds[] = {
	{
		.name			= "beagleboard::usr0",
		.default_trigger	= "heartbeat",
		.gpio			= 150,
	},
	{
		.name			= "beagleboard::usr1",
		.default_trigger	= "mmc0",
		.gpio			= 149,
	},
	{
		.name			= "beagleboard::pmu_stat",
		.gpio			= -EINVAL,	/* gets replaced */
		.active_low		= true,
	},
};

static struct gpio_led_platform_data gpio_led_info = {
	.leds		= gpio_leds,
	.num_leds	= ARRAY_SIZE(gpio_leds),
};

static struct platform_device leds_gpio = {
	.name	= "leds-gpio",
	.id	= -1,
	.dev	= {
		.platform_data	= &gpio_led_info,
	},
};

static struct gpio_keys_button gpio_buttons[] = {
	{
		.code			= BTN_EXTRA,
		.gpio			= 7,
		.desc			= "user",
		.wakeup			= 1,
	},
};

static struct gpio_keys_platform_data gpio_key_info = {
	.buttons	= gpio_buttons,
	.nbuttons	= ARRAY_SIZE(gpio_buttons),
};

static struct platform_device keys_gpio = {
	.name	= "gpio-keys",
	.id	= -1,
	.dev	= {
		.platform_data	= &gpio_key_info,
	},
};

/* DSS */

static int beagle_enable_dvi(struct omap_display *display)
{
	if (display->hw_config.panel_reset_gpio != -1)
		gpio_set_value(display->hw_config.panel_reset_gpio, 1);

	return 0;
}

static void beagle_disable_dvi(struct omap_display *display)
{
	if (display->hw_config.panel_reset_gpio != -1)
		gpio_set_value(display->hw_config.panel_reset_gpio, 0);
}

static struct omap_dss_display_config beagle_display_data_dvi = {
	.type = OMAP_DISPLAY_TYPE_DPI,
	.name = "dvi",
	.panel_name = "panel-generic",
	.u.dpi.data_lines = 24,
	.panel_reset_gpio = 170,
	.panel_enable = beagle_enable_dvi,
	.panel_disable = beagle_disable_dvi,
};


static int beagle_panel_enable_tv(struct omap_display *display)
{
#define ENABLE_VDAC_DEDICATED           0x03
#define ENABLE_VDAC_DEV_GRP             0x20

	twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
			ENABLE_VDAC_DEDICATED,
			TWL4030_VDAC_DEDICATED);
	twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
			ENABLE_VDAC_DEV_GRP, TWL4030_VDAC_DEV_GRP);

	return 0;
}

static void beagle_panel_disable_tv(struct omap_display *display)
{
	twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x00,
			TWL4030_VDAC_DEDICATED);
	twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x00,
			TWL4030_VDAC_DEV_GRP);
}

static struct omap_dss_display_config beagle_display_data_tv = {
	.type = OMAP_DISPLAY_TYPE_VENC,
	.name = "tv",
	.u.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
	.panel_enable = beagle_panel_enable_tv,
	.panel_disable = beagle_panel_disable_tv,
};

static struct omap_dss_board_info beagle_dss_data = {
	.num_displays = 2,
	.displays = {
		&beagle_display_data_dvi,
		&beagle_display_data_tv,
	}
};

static struct platform_device beagle_dss_device = {
	.name          = "omapdss",
	.id            = -1,
	.dev            = {
		.platform_data = &beagle_dss_data,
	},
};

static void __init beagle_display_init(void)
{
	int r;

	r = gpio_request(beagle_display_data_dvi.panel_reset_gpio, "DVI reset");
	if (r < 0) {
		printk(KERN_ERR "Unable to get DVI reset GPIO\n");
		return;
	}

	gpio_direction_output(beagle_display_data_dvi.panel_reset_gpio, 0);
}

static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
	{ OMAP_TAG_UART,	&omap3_beagle_uart_config },
};

static struct platform_device *omap3_beagle_devices[] __initdata = {
	&beagle_dss_device,
	&leds_gpio,
	&keys_gpio,
};

static void __init omap3beagle_flash_init(void)
{
	u8 cs = 0;
	u8 nandcs = GPMC_CS_NUM + 1;

	u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;

	/* find out the chip-select on which NAND exists */
	while (cs < GPMC_CS_NUM) {
		u32 ret = 0;
		ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);

		if ((ret & 0xC00) == 0x800) {
			printk(KERN_INFO "Found NAND on CS%d\n", cs);
			if (nandcs > GPMC_CS_NUM)
				nandcs = cs;
		}
		cs++;
	}

	if (nandcs > GPMC_CS_NUM) {
		printk(KERN_INFO "NAND: Unable to find configuration "
				 "in GPMC\n ");
		return;
	}

	if (nandcs < GPMC_CS_NUM) {
		omap3beagle_nand_data.cs = nandcs;
		omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
			(gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
		omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);

		printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
		if (platform_device_register(&omap3beagle_nand_device) < 0)
			printk(KERN_ERR "Unable to register NAND device\n");
	}
}

static void __init omap3_beagle_init(void)
{
	omap3_beagle_i2c_init();
	platform_add_devices(omap3_beagle_devices,
			ARRAY_SIZE(omap3_beagle_devices));
	omap_board_config = omap3_beagle_config;
	omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
	omap_serial_init();

	omap_cfg_reg(J25_34XX_GPIO170);

	usb_musb_init();
	usb_ehci_init();
	omap3beagle_flash_init();
	beagle_display_init();
	
	/* TODO: these have to be moved to device specific init
	 * once the drivers are ready
	 */
	gpio_request(141, "enc424j600_irq");
	gpio_direction_input(141);

	spi_register_board_info(beagle_spi_board_info, 
				ARRAY_SIZE(beagle_spi_board_info));
}

static void __init omap3_beagle_map_io(void)
{
	omap2_set_globals_343x();
	omap2_map_common_io();
}

MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
	/* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
	.phys_io	= 0x48000000,
	.io_pg_offst	= ((0xd8000000) >> 18) & 0xfffc,
	.boot_params	= 0x80000100,
	.map_io		= omap3_beagle_map_io,
	.init_irq	= omap3_beagle_init_irq,
	.init_machine	= omap3_beagle_init,
	.timer		= &omap_timer,
MACHINE_END