592 lines
14 KiB
C
592 lines
14 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/mmc/host.h>
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#include <linux/regulator/machine.h>
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#include <linux/i2c/twl.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 <plat/board.h>
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#include <plat/common.h>
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#include <plat/display.h>
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#include <plat/gpmc.h>
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#include <plat/nand.h>
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#include <plat/usb.h>
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#include "mux.h"
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#include "hsmmc.h"
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#include "timer-gp.h"
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#define NAND_BLOCK_SIZE SZ_128K
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/*
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* OMAP3 Beagle revision
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* Run time detection of Beagle revision is done by reading GPIO.
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* GPIO ID -
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* AXBX = GPIO173, GPIO172, GPIO171: 1 1 1
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* C1_3 = GPIO173, GPIO172, GPIO171: 1 1 0
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* C4 = GPIO173, GPIO172, GPIO171: 1 0 1
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* XM = GPIO173, GPIO172, GPIO171: 0 0 0
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*/
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enum {
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OMAP3BEAGLE_BOARD_UNKN = 0,
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OMAP3BEAGLE_BOARD_AXBX,
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OMAP3BEAGLE_BOARD_C1_3,
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OMAP3BEAGLE_BOARD_C4,
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OMAP3BEAGLE_BOARD_XM,
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};
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static u8 omap3_beagle_version;
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static u8 omap3_beagle_get_rev(void)
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{
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return omap3_beagle_version;
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}
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static void __init omap3_beagle_init_rev(void)
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{
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int ret;
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u16 beagle_rev = 0;
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omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
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omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
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omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
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ret = gpio_request(171, "rev_id_0");
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if (ret < 0)
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goto fail0;
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ret = gpio_request(172, "rev_id_1");
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if (ret < 0)
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goto fail1;
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ret = gpio_request(173, "rev_id_2");
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if (ret < 0)
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goto fail2;
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gpio_direction_input(171);
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gpio_direction_input(172);
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gpio_direction_input(173);
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beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
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| (gpio_get_value(173) << 2);
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switch (beagle_rev) {
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case 7:
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printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
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omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
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break;
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case 6:
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printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
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omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
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break;
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case 5:
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printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
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omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
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break;
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case 0:
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printk(KERN_INFO "OMAP3 Beagle Rev: xM\n");
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omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
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break;
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default:
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printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
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omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
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}
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return;
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fail2:
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gpio_free(172);
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fail1:
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gpio_free(171);
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fail0:
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printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
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omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
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return;
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}
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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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/* DSS */
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static int beagle_enable_dvi(struct omap_dss_device *dssdev)
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{
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if (gpio_is_valid(dssdev->reset_gpio))
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gpio_set_value(dssdev->reset_gpio, 1);
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return 0;
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}
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static void beagle_disable_dvi(struct omap_dss_device *dssdev)
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{
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if (gpio_is_valid(dssdev->reset_gpio))
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gpio_set_value(dssdev->reset_gpio, 0);
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}
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static struct omap_dss_device beagle_dvi_device = {
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.type = OMAP_DISPLAY_TYPE_DPI,
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.name = "dvi",
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.driver_name = "generic_panel",
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.phy.dpi.data_lines = 24,
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.reset_gpio = 170,
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.platform_enable = beagle_enable_dvi,
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.platform_disable = beagle_disable_dvi,
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};
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static struct omap_dss_device beagle_tv_device = {
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.name = "tv",
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.driver_name = "venc",
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.type = OMAP_DISPLAY_TYPE_VENC,
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.phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
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};
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static struct omap_dss_device *beagle_dss_devices[] = {
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&beagle_dvi_device,
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&beagle_tv_device,
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};
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static struct omap_dss_board_info beagle_dss_data = {
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.num_devices = ARRAY_SIZE(beagle_dss_devices),
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.devices = beagle_dss_devices,
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.default_device = &beagle_dvi_device,
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};
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static struct platform_device beagle_dss_device = {
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.name = "omapdss",
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.id = -1,
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.dev = {
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.platform_data = &beagle_dss_data,
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},
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};
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static struct regulator_consumer_supply beagle_vdac_supply =
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REGULATOR_SUPPLY("vdda_dac", "omapdss");
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static struct regulator_consumer_supply beagle_vdvi_supply =
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REGULATOR_SUPPLY("vdds_dsi", "omapdss");
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static void __init beagle_display_init(void)
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{
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int r;
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r = gpio_request(beagle_dvi_device.reset_gpio, "DVI reset");
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if (r < 0) {
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printk(KERN_ERR "Unable to get DVI reset GPIO\n");
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return;
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}
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gpio_direction_output(beagle_dvi_device.reset_gpio, 0);
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}
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#include "sdram-micron-mt46h32m32lf-6.h"
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static struct omap2_hsmmc_info mmc[] = {
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{
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.mmc = 1,
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.caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
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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 regulator_consumer_supply beagle_vmmc1_supply = {
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.supply = "vmmc",
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};
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static struct regulator_consumer_supply beagle_vsim_supply = {
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.supply = "vmmc_aux",
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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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if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
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mmc[0].gpio_wp = -EINVAL;
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} else if ((omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C1_3) ||
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(omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C4)) {
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omap_mux_init_gpio(23, OMAP_PIN_INPUT);
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mmc[0].gpio_wp = 23;
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} else {
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omap_mux_init_gpio(29, OMAP_PIN_INPUT);
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}
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/* gpio + 0 is "mmc0_cd" (input/IRQ) */
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mmc[0].gpio_cd = gpio + 0;
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omap2_hsmmc_init(mmc);
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/* link regulators to MMC adapters */
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beagle_vmmc1_supply.dev = mmc[0].dev;
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beagle_vsim_supply.dev = mmc[0].dev;
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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, 0);
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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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/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
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static struct regulator_init_data beagle_vmmc1 = {
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.constraints = {
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.min_uV = 1850000,
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.max_uV = 3150000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL
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| REGULATOR_MODE_STANDBY,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_MODE
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| REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = 1,
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.consumer_supplies = &beagle_vmmc1_supply,
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};
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/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
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static struct regulator_init_data beagle_vsim = {
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.constraints = {
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.min_uV = 1800000,
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.max_uV = 3000000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL
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| REGULATOR_MODE_STANDBY,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_MODE
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| REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = 1,
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.consumer_supplies = &beagle_vsim_supply,
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};
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/* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
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static struct regulator_init_data beagle_vdac = {
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.constraints = {
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.min_uV = 1800000,
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.max_uV = 1800000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL
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| REGULATOR_MODE_STANDBY,
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.valid_ops_mask = REGULATOR_CHANGE_MODE
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| REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = 1,
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.consumer_supplies = &beagle_vdac_supply,
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};
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/* VPLL2 for digital video outputs */
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static struct regulator_init_data beagle_vpll2 = {
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.constraints = {
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.name = "VDVI",
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.min_uV = 1800000,
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.max_uV = 1800000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL
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| REGULATOR_MODE_STANDBY,
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.valid_ops_mask = REGULATOR_CHANGE_MODE
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| REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = 1,
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.consumer_supplies = &beagle_vdvi_supply,
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};
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static struct twl4030_usb_data beagle_usb_data = {
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.usb_mode = T2_USB_MODE_ULPI,
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};
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static struct twl4030_codec_audio_data beagle_audio_data = {
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.audio_mclk = 26000000,
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};
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static struct twl4030_codec_data beagle_codec_data = {
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.audio_mclk = 26000000,
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.audio = &beagle_audio_data,
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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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.usb = &beagle_usb_data,
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.gpio = &beagle_gpio_data,
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.codec = &beagle_codec_data,
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.vmmc1 = &beagle_vmmc1,
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.vsim = &beagle_vsim,
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.vdac = &beagle_vdac,
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.vpll2 = &beagle_vpll2,
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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 struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
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{
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I2C_BOARD_INFO("eeprom", 0x50),
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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, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
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return 0;
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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 void __init omap3_beagle_init_irq(void)
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{
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omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
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mt46h32m32lf6_sdrc_params);
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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);
|
|
#endif
|
|
}
|
|
|
|
static struct platform_device *omap3_beagle_devices[] __initdata = {
|
|
&leds_gpio,
|
|
&keys_gpio,
|
|
&beagle_dss_device,
|
|
};
|
|
|
|
static void __init omap3beagle_flash_init(void)
|
|
{
|
|
u8 cs = 0;
|
|
u8 nandcs = GPMC_CS_NUM + 1;
|
|
|
|
/* 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;
|
|
|
|
printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
|
|
if (gpmc_nand_init(&omap3beagle_nand_data) < 0)
|
|
printk(KERN_ERR "Unable to register NAND device\n");
|
|
}
|
|
}
|
|
|
|
static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
|
|
|
|
.port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
|
|
.port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
|
|
.port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
|
|
|
|
.phy_reset = true,
|
|
.reset_gpio_port[0] = -EINVAL,
|
|
.reset_gpio_port[1] = 147,
|
|
.reset_gpio_port[2] = -EINVAL
|
|
};
|
|
|
|
#ifdef CONFIG_OMAP_MUX
|
|
static struct omap_board_mux board_mux[] __initdata = {
|
|
{ .reg_offset = OMAP_MUX_TERMINATOR },
|
|
};
|
|
#endif
|
|
|
|
static struct omap_musb_board_data musb_board_data = {
|
|
.interface_type = MUSB_INTERFACE_ULPI,
|
|
.mode = MUSB_OTG,
|
|
.power = 100,
|
|
};
|
|
|
|
static void __init omap3_beagle_init(void)
|
|
{
|
|
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
|
|
omap3_beagle_init_rev();
|
|
omap3_beagle_i2c_init();
|
|
platform_add_devices(omap3_beagle_devices,
|
|
ARRAY_SIZE(omap3_beagle_devices));
|
|
omap_serial_init();
|
|
|
|
omap_mux_init_gpio(170, OMAP_PIN_INPUT);
|
|
gpio_request(170, "DVI_nPD");
|
|
/* REVISIT leave DVI powered down until it's needed ... */
|
|
gpio_direction_output(170, true);
|
|
|
|
usb_musb_init(&musb_board_data);
|
|
usb_ehci_init(&ehci_pdata);
|
|
omap3beagle_flash_init();
|
|
|
|
/* Ensure SDRC pins are mux'd for self-refresh */
|
|
omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
|
|
omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
|
|
|
|
beagle_display_init();
|
|
}
|
|
|
|
MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
|
|
/* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
|
|
.boot_params = 0x80000100,
|
|
.map_io = omap3_map_io,
|
|
.reserve = omap_reserve,
|
|
.init_irq = omap3_beagle_init_irq,
|
|
.init_machine = omap3_beagle_init,
|
|
.timer = &omap_timer,
|
|
MACHINE_END
|