linux-stable-rt/arch/arm/mach-omap1/board-fsample.c

/*
 * linux/arch/arm/mach-omap1/board-fsample.c
 *
 * Modified from board-perseus2.c
 *
 * Original OMAP730 support by Jean Pihet <j-pihet@ti.com>
 * Updated for 2.6 by Kevin Hilman <kjh@hilman.org>
 *
 * 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/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/input.h>
#include <linux/smc91x.h>

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

#include <plat/tc.h>
#include <plat/mux.h>
#include <plat/flash.h>
#include <plat/fpga.h>
#include <plat/keypad.h>
#include <plat/common.h>
#include <plat/board.h>

/* fsample is pretty close to p2-sample */

#define fsample_cpld_read(reg) __raw_readb(reg)
#define fsample_cpld_write(val, reg) __raw_writeb(val, reg)

#define FSAMPLE_CPLD_BASE    0xE8100000
#define FSAMPLE_CPLD_SIZE    SZ_4K
#define FSAMPLE_CPLD_START   0x05080000

#define FSAMPLE_CPLD_REG_A   (FSAMPLE_CPLD_BASE + 0x00)
#define FSAMPLE_CPLD_SWITCH  (FSAMPLE_CPLD_BASE + 0x02)
#define FSAMPLE_CPLD_UART    (FSAMPLE_CPLD_BASE + 0x02)
#define FSAMPLE_CPLD_REG_B   (FSAMPLE_CPLD_BASE + 0x04)
#define FSAMPLE_CPLD_VERSION (FSAMPLE_CPLD_BASE + 0x06)
#define FSAMPLE_CPLD_SET_CLR (FSAMPLE_CPLD_BASE + 0x06)

#define FSAMPLE_CPLD_BIT_BT_RESET         0
#define FSAMPLE_CPLD_BIT_LCD_RESET        1
#define FSAMPLE_CPLD_BIT_CAM_PWDN         2
#define FSAMPLE_CPLD_BIT_CHARGER_ENABLE   3
#define FSAMPLE_CPLD_BIT_SD_MMC_EN        4
#define FSAMPLE_CPLD_BIT_aGPS_PWREN       5
#define FSAMPLE_CPLD_BIT_BACKLIGHT        6
#define FSAMPLE_CPLD_BIT_aGPS_EN_RESET    7
#define FSAMPLE_CPLD_BIT_aGPS_SLEEPx_N    8
#define FSAMPLE_CPLD_BIT_OTG_RESET        9

#define fsample_cpld_set(bit) \
    fsample_cpld_write((((bit) & 15) << 4) | 0x0f, FSAMPLE_CPLD_SET_CLR)

#define fsample_cpld_clear(bit) \
    fsample_cpld_write(0xf0 | ((bit) & 15), FSAMPLE_CPLD_SET_CLR)

static const unsigned int fsample_keymap[] = {
	KEY(0, 0, KEY_UP),
	KEY(1, 0, KEY_RIGHT),
	KEY(2, 0, KEY_LEFT),
	KEY(3, 0, KEY_DOWN),
	KEY(4, 0, KEY_ENTER),
	KEY(0, 1, KEY_F10),
	KEY(1, 1, KEY_SEND),
	KEY(2, 1, KEY_END),
	KEY(3, 1, KEY_VOLUMEDOWN),
	KEY(4, 1, KEY_VOLUMEUP),
	KEY(5, 1, KEY_RECORD),
	KEY(0, 2, KEY_F9),
	KEY(1, 2, KEY_3),
	KEY(2, 2, KEY_6),
	KEY(3, 2, KEY_9),
	KEY(4, 2, KEY_KPDOT),
	KEY(0, 3, KEY_BACK),
	KEY(1, 3, KEY_2),
	KEY(2, 3, KEY_5),
	KEY(3, 3, KEY_8),
	KEY(4, 3, KEY_0),
	KEY(5, 3, KEY_KPSLASH),
	KEY(0, 4, KEY_HOME),
	KEY(1, 4, KEY_1),
	KEY(2, 4, KEY_4),
	KEY(3, 4, KEY_7),
	KEY(4, 4, KEY_KPASTERISK),
	KEY(5, 4, KEY_POWER),
};

static struct smc91x_platdata smc91x_info = {
	.flags	= SMC91X_USE_16BIT | SMC91X_NOWAIT,
	.leda	= RPC_LED_100_10,
	.ledb	= RPC_LED_TX_RX,
};

static struct resource smc91x_resources[] = {
	[0] = {
		.start	= H2P2_DBG_FPGA_ETHR_START,	/* Physical */
		.end	= H2P2_DBG_FPGA_ETHR_START + 0xf,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= INT_7XX_MPU_EXT_NIRQ,
		.end	= 0,
		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
	},
};

static void __init fsample_init_smc91x(void)
{
	fpga_write(1, H2P2_DBG_FPGA_LAN_RESET);
	mdelay(50);
	fpga_write(fpga_read(H2P2_DBG_FPGA_LAN_RESET) & ~1,
		   H2P2_DBG_FPGA_LAN_RESET);
	mdelay(50);
}

static struct mtd_partition nor_partitions[] = {
	/* bootloader (U-Boot, etc) in first sector */
	{
	      .name		= "bootloader",
	      .offset		= 0,
	      .size		= SZ_128K,
	      .mask_flags	= MTD_WRITEABLE, /* force read-only */
	},
	/* bootloader params in the next sector */
	{
	      .name		= "params",
	      .offset		= MTDPART_OFS_APPEND,
	      .size		= SZ_128K,
	      .mask_flags	= 0,
	},
	/* kernel */
	{
	      .name		= "kernel",
	      .offset		= MTDPART_OFS_APPEND,
	      .size		= SZ_2M,
	      .mask_flags	= 0
	},
	/* rest of flash is a file system */
	{
	      .name		= "rootfs",
	      .offset		= MTDPART_OFS_APPEND,
	      .size		= MTDPART_SIZ_FULL,
	      .mask_flags	= 0
	},
};

static struct physmap_flash_data nor_data = {
	.width		= 2,
	.set_vpp	= omap1_set_vpp,
	.parts		= nor_partitions,
	.nr_parts	= ARRAY_SIZE(nor_partitions),
};

static struct resource nor_resource = {
	.start		= OMAP_CS0_PHYS,
	.end		= OMAP_CS0_PHYS + SZ_32M - 1,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device nor_device = {
	.name		= "physmap-flash",
	.id		= 0,
	.dev		= {
		.platform_data	= &nor_data,
	},
	.num_resources	= 1,
	.resource	= &nor_resource,
};

static void nand_cmd_ctl(struct mtd_info *mtd, int cmd,	unsigned int ctrl)
{
	struct nand_chip *this = mtd->priv;
	unsigned long mask;

	if (cmd == NAND_CMD_NONE)
		return;

	mask = (ctrl & NAND_CLE) ? 0x02 : 0;
	if (ctrl & NAND_ALE)
		mask |= 0x04;
	writeb(cmd, (unsigned long)this->IO_ADDR_W | mask);
}

#define FSAMPLE_NAND_RB_GPIO_PIN	62

static int nand_dev_ready(struct mtd_info *mtd)
{
	return gpio_get_value(FSAMPLE_NAND_RB_GPIO_PIN);
}

static const char *part_probes[] = { "cmdlinepart", NULL };

static struct platform_nand_data nand_data = {
	.chip	= {
		.nr_chips		= 1,
		.chip_offset		= 0,
		.options		= NAND_SAMSUNG_LP_OPTIONS,
		.part_probe_types	= part_probes,
	},
	.ctrl	= {
		.cmd_ctrl	= nand_cmd_ctl,
		.dev_ready	= nand_dev_ready,
	},
};

static struct resource nand_resource = {
	.start		= OMAP_CS3_PHYS,
	.end		= OMAP_CS3_PHYS + SZ_4K - 1,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device nand_device = {
	.name		= "gen_nand",
	.id		= 0,
	.dev		= {
		.platform_data	= &nand_data,
	},
	.num_resources	= 1,
	.resource	= &nand_resource,
};

static struct platform_device smc91x_device = {
	.name		= "smc91x",
	.id		= 0,
	.dev	= {
		.platform_data	= &smc91x_info,
	},
	.num_resources	= ARRAY_SIZE(smc91x_resources),
	.resource	= smc91x_resources,
};

static struct resource kp_resources[] = {
	[0] = {
		.start	= INT_7XX_MPUIO_KEYPAD,
		.end	= INT_7XX_MPUIO_KEYPAD,
		.flags	= IORESOURCE_IRQ,
	},
};

static const struct matrix_keymap_data fsample_keymap_data = {
	.keymap		= fsample_keymap,
	.keymap_size	= ARRAY_SIZE(fsample_keymap),
};

static struct omap_kp_platform_data kp_data = {
	.rows		= 8,
	.cols		= 8,
	.keymap_data	= &fsample_keymap_data,
	.delay		= 4,
};

static struct platform_device kp_device = {
	.name		= "omap-keypad",
	.id		= -1,
	.dev		= {
		.platform_data = &kp_data,
	},
	.num_resources	= ARRAY_SIZE(kp_resources),
	.resource	= kp_resources,
};

static struct platform_device lcd_device = {
	.name		= "lcd_p2",
	.id		= -1,
};

static struct platform_device *devices[] __initdata = {
	&nor_device,
	&nand_device,
	&smc91x_device,
	&kp_device,
	&lcd_device,
};

static struct omap_lcd_config fsample_lcd_config = {
	.ctrl_name	= "internal",
};

static struct omap_board_config_kernel fsample_config[] __initdata = {
	{ OMAP_TAG_LCD,		&fsample_lcd_config },
};

static void __init omap_fsample_init(void)
{
	/* Early, board-dependent init */

	/*
	 * Hold GSM Reset until needed
	 */
	omap_writew(omap_readw(OMAP7XX_DSP_M_CTL) & ~1, OMAP7XX_DSP_M_CTL);

	/*
	 * UARTs -> done automagically by 8250 driver
	 */

	/*
	 * CSx timings, GPIO Mux ... setup
	 */

	/* Flash: CS0 timings setup */
	omap_writel(0x0000fff3, OMAP7XX_FLASH_CFG_0);
	omap_writel(0x00000088, OMAP7XX_FLASH_ACFG_0);

	/*
	 * Ethernet support through the debug board
	 * CS1 timings setup
	 */
	omap_writel(0x0000fff3, OMAP7XX_FLASH_CFG_1);
	omap_writel(0x00000000, OMAP7XX_FLASH_ACFG_1);

	/*
	 * Configure MPU_EXT_NIRQ IO in IO_CONF9 register,
	 * It is used as the Ethernet controller interrupt
	 */
	omap_writel(omap_readl(OMAP7XX_IO_CONF_9) & 0x1FFFFFFF,
			OMAP7XX_IO_CONF_9);

	fsample_init_smc91x();

	if (gpio_request(FSAMPLE_NAND_RB_GPIO_PIN, "NAND ready") < 0)
		BUG();
	gpio_direction_input(FSAMPLE_NAND_RB_GPIO_PIN);

	omap_cfg_reg(L3_1610_FLASH_CS2B_OE);
	omap_cfg_reg(M8_1610_FLASH_CS2B_WE);

	/* Mux pins for keypad */
	omap_cfg_reg(E2_7XX_KBR0);
	omap_cfg_reg(J7_7XX_KBR1);
	omap_cfg_reg(E1_7XX_KBR2);
	omap_cfg_reg(F3_7XX_KBR3);
	omap_cfg_reg(D2_7XX_KBR4);
	omap_cfg_reg(C2_7XX_KBC0);
	omap_cfg_reg(D3_7XX_KBC1);
	omap_cfg_reg(E4_7XX_KBC2);
	omap_cfg_reg(F4_7XX_KBC3);
	omap_cfg_reg(E3_7XX_KBC4);

	platform_add_devices(devices, ARRAY_SIZE(devices));

	omap_board_config = fsample_config;
	omap_board_config_size = ARRAY_SIZE(fsample_config);
	omap_serial_init();
	omap_register_i2c_bus(1, 100, NULL, 0);
}

/* Only FPGA needs to be mapped here. All others are done with ioremap */
static struct map_desc omap_fsample_io_desc[] __initdata = {
	{
		.virtual	= H2P2_DBG_FPGA_BASE,
		.pfn		= __phys_to_pfn(H2P2_DBG_FPGA_START),
		.length		= H2P2_DBG_FPGA_SIZE,
		.type		= MT_DEVICE
	},
	{
		.virtual	= FSAMPLE_CPLD_BASE,
		.pfn		= __phys_to_pfn(FSAMPLE_CPLD_START),
		.length		= FSAMPLE_CPLD_SIZE,
		.type		= MT_DEVICE
	}
};

static void __init omap_fsample_map_io(void)
{
	omap15xx_map_io();
	iotable_init(omap_fsample_io_desc,
		     ARRAY_SIZE(omap_fsample_io_desc));
}

MACHINE_START(OMAP_FSAMPLE, "OMAP730 F-Sample")
/* Maintainer: Brian Swetland <swetland@google.com> */
	.atag_offset	= 0x100,
	.map_io		= omap_fsample_map_io,
	.init_early	= omap1_init_early,
	.reserve	= omap_reserve,
	.init_irq	= omap1_init_irq,
	.init_machine	= omap_fsample_init,
	.timer		= &omap1_timer,
MACHINE_END