341 lines
8.0 KiB
C
341 lines
8.0 KiB
C
/*
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* linux/arch/arm/mach-omap2/board-omap3beagle.c
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*
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* Copyright (C) 2008 Texas Instruments
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*
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* Modified from mach-omap2/board-3430sdp.c
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*
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* Initial code: Syed Mohammed Khasim
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/leds.h>
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#include <linux/gpio.h>
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#include <linux/input.h>
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#include <linux/gpio_keys.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/nand.h>
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#include <linux/i2c/twl4030.h>
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/flash.h>
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#include <mach/board.h>
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#include <mach/common.h>
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#include <mach/gpmc.h>
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#include <mach/nand.h>
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#include <mach/mux.h>
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#include <mach/usb.h>
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#include <mach/timer-gp.h>
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#include "mmc-twl4030.h"
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#define GPMC_CS0_BASE 0x60
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#define GPMC_CS_SIZE 0x30
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#define NAND_BLOCK_SIZE SZ_128K
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static struct mtd_partition omap3beagle_nand_partitions[] = {
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/* All the partition sizes are listed in terms of NAND block size */
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{
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.name = "X-Loader",
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.offset = 0,
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.size = 4 * NAND_BLOCK_SIZE,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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{
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.name = "U-Boot",
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.offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
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.size = 15 * NAND_BLOCK_SIZE,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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{
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.name = "U-Boot Env",
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.offset = MTDPART_OFS_APPEND, /* Offset = 0x260000 */
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.size = 1 * NAND_BLOCK_SIZE,
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},
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{
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.name = "Kernel",
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.offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
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.size = 32 * NAND_BLOCK_SIZE,
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},
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{
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.name = "File System",
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.offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct omap_nand_platform_data omap3beagle_nand_data = {
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.options = NAND_BUSWIDTH_16,
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.parts = omap3beagle_nand_partitions,
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.nr_parts = ARRAY_SIZE(omap3beagle_nand_partitions),
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.dma_channel = -1, /* disable DMA in OMAP NAND driver */
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.nand_setup = NULL,
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.dev_ready = NULL,
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};
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static struct resource omap3beagle_nand_resource = {
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device omap3beagle_nand_device = {
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.name = "omap2-nand",
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.id = -1,
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.dev = {
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.platform_data = &omap3beagle_nand_data,
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},
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.num_resources = 1,
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.resource = &omap3beagle_nand_resource,
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};
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static struct omap_uart_config omap3_beagle_uart_config __initdata = {
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.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
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};
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static struct twl4030_hsmmc_info mmc[] = {
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{
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.mmc = 1,
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.wires = 8,
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.gpio_wp = 29,
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},
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{} /* Terminator */
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};
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static struct gpio_led gpio_leds[];
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static int beagle_twl_gpio_setup(struct device *dev,
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unsigned gpio, unsigned ngpio)
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{
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/* gpio + 0 is "mmc0_cd" (input/IRQ) */
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omap_cfg_reg(AH8_34XX_GPIO29);
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mmc[0].gpio_cd = gpio + 0;
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twl4030_mmc_init(mmc);
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/* REVISIT: need ehci-omap hooks for external VBUS
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* power switch and overcurrent detect
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*/
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gpio_request(gpio + 1, "EHCI_nOC");
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gpio_direction_input(gpio + 1);
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/* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
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gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
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gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
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/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
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gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
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return 0;
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}
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static struct twl4030_gpio_platform_data beagle_gpio_data = {
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.gpio_base = OMAP_MAX_GPIO_LINES,
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.irq_base = TWL4030_GPIO_IRQ_BASE,
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.irq_end = TWL4030_GPIO_IRQ_END,
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.use_leds = true,
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.pullups = BIT(1),
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.pulldowns = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
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| BIT(15) | BIT(16) | BIT(17),
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.setup = beagle_twl_gpio_setup,
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};
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static struct twl4030_platform_data beagle_twldata = {
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.irq_base = TWL4030_IRQ_BASE,
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.irq_end = TWL4030_IRQ_END,
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/* platform_data for children goes here */
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.gpio = &beagle_gpio_data,
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};
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static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
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{
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I2C_BOARD_INFO("twl4030", 0x48),
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.flags = I2C_CLIENT_WAKE,
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.irq = INT_34XX_SYS_NIRQ,
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.platform_data = &beagle_twldata,
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},
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};
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static int __init omap3_beagle_i2c_init(void)
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{
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omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
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ARRAY_SIZE(beagle_i2c_boardinfo));
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/* Bus 3 is attached to the DVI port where devices like the pico DLP
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* projector don't work reliably with 400kHz */
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omap_register_i2c_bus(3, 100, NULL, 0);
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return 0;
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}
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static void __init omap3_beagle_init_irq(void)
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{
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omap2_init_common_hw(NULL);
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omap_init_irq();
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#ifdef CONFIG_OMAP_32K_TIMER
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omap2_gp_clockevent_set_gptimer(12);
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#endif
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omap_gpio_init();
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}
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static struct platform_device omap3_beagle_lcd_device = {
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.name = "omap3beagle_lcd",
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.id = -1,
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};
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static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
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.ctrl_name = "internal",
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};
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static struct gpio_led gpio_leds[] = {
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{
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.name = "beagleboard::usr0",
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.default_trigger = "heartbeat",
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.gpio = 150,
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},
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{
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.name = "beagleboard::usr1",
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.default_trigger = "mmc0",
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.gpio = 149,
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},
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{
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.name = "beagleboard::pmu_stat",
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.gpio = -EINVAL, /* gets replaced */
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.active_low = true,
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},
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};
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static struct gpio_led_platform_data gpio_led_info = {
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.leds = gpio_leds,
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.num_leds = ARRAY_SIZE(gpio_leds),
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};
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static struct platform_device leds_gpio = {
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.name = "leds-gpio",
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.id = -1,
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.dev = {
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.platform_data = &gpio_led_info,
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},
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};
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static struct gpio_keys_button gpio_buttons[] = {
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{
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.code = BTN_EXTRA,
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.gpio = 7,
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.desc = "user",
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.wakeup = 1,
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},
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};
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static struct gpio_keys_platform_data gpio_key_info = {
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.buttons = gpio_buttons,
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.nbuttons = ARRAY_SIZE(gpio_buttons),
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};
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static struct platform_device keys_gpio = {
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.name = "gpio-keys",
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.id = -1,
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.dev = {
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.platform_data = &gpio_key_info,
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},
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};
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static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
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{ OMAP_TAG_UART, &omap3_beagle_uart_config },
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{ OMAP_TAG_LCD, &omap3_beagle_lcd_config },
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};
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static struct platform_device *omap3_beagle_devices[] __initdata = {
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&omap3_beagle_lcd_device,
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&leds_gpio,
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&keys_gpio,
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};
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static void __init omap3beagle_flash_init(void)
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{
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u8 cs = 0;
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u8 nandcs = GPMC_CS_NUM + 1;
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u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
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/* find out the chip-select on which NAND exists */
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while (cs < GPMC_CS_NUM) {
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u32 ret = 0;
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ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
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if ((ret & 0xC00) == 0x800) {
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printk(KERN_INFO "Found NAND on CS%d\n", cs);
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if (nandcs > GPMC_CS_NUM)
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nandcs = cs;
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}
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cs++;
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}
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if (nandcs > GPMC_CS_NUM) {
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printk(KERN_INFO "NAND: Unable to find configuration "
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"in GPMC\n ");
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return;
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}
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if (nandcs < GPMC_CS_NUM) {
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omap3beagle_nand_data.cs = nandcs;
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omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
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(gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
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omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
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printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
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if (platform_device_register(&omap3beagle_nand_device) < 0)
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printk(KERN_ERR "Unable to register NAND device\n");
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}
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}
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static void __init omap3_beagle_init(void)
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{
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omap3_beagle_i2c_init();
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platform_add_devices(omap3_beagle_devices,
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ARRAY_SIZE(omap3_beagle_devices));
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omap_board_config = omap3_beagle_config;
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omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
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omap_serial_init();
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omap_cfg_reg(J25_34XX_GPIO170);
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gpio_request(170, "DVI_nPD");
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/* REVISIT leave DVI powered down until it's needed ... */
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gpio_direction_output(170, true);
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usb_musb_init();
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omap3beagle_flash_init();
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}
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static void __init omap3_beagle_map_io(void)
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{
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omap2_set_globals_343x();
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omap2_map_common_io();
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}
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MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
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/* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
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.phys_io = 0x48000000,
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.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
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.boot_params = 0x80000100,
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.map_io = omap3_beagle_map_io,
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.init_irq = omap3_beagle_init_irq,
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.init_machine = omap3_beagle_init,
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.timer = &omap_timer,
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MACHINE_END
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