7e367c18c0
Looks like the LCD panel on LDP has been broken quite a while, and
recently got fixed by commit 0b2aa8bed3 (gpio: twl4030: Fix regression
for twl gpio output). However, there's still an issue left where the panel
backlight does not come on if the LCD drivers are built into the
kernel.
Fix the issue by registering the DPI LCD panel only after the twl4030
GPIO has probed.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
[tony@atomide.com: updated per Tomi's comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>
431 lines
10 KiB
C
431 lines
10 KiB
C
/*
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* linux/arch/arm/mach-omap2/board-ldp.c
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*
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* Copyright (C) 2008 Texas Instruments Inc.
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* Nishant Kamat <nskamat@ti.com>
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*
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* Modified from mach-omap2/board-3430sdp.c
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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/gpio.h>
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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/input.h>
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#include <linux/input/matrix_keypad.h>
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#include <linux/gpio_keys.h>
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#include <linux/workqueue.h>
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#include <linux/err.h>
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#include <linux/clk.h>
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#include <linux/spi/spi.h>
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#include <linux/regulator/fixed.h>
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#include <linux/regulator/machine.h>
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#include <linux/i2c/twl.h>
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#include <linux/io.h>
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#include <linux/smsc911x.h>
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#include <linux/mmc/host.h>
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#include <linux/usb/phy.h>
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#include <linux/platform_data/spi-omap2-mcspi.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 "common.h"
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#include "gpmc.h"
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#include "gpmc-smsc911x.h"
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#include <video/omapdss.h>
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#include <video/omap-panel-data.h>
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#include "board-flash.h"
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#include "mux.h"
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#include "hsmmc.h"
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#include "control.h"
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#include "common-board-devices.h"
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#define LDP_SMSC911X_CS 1
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#define LDP_SMSC911X_GPIO 152
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#define DEBUG_BASE 0x08000000
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#define LDP_ETHR_START DEBUG_BASE
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static uint32_t board_keymap[] = {
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KEY(0, 0, KEY_1),
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KEY(1, 0, KEY_2),
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KEY(2, 0, KEY_3),
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KEY(0, 1, KEY_4),
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KEY(1, 1, KEY_5),
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KEY(2, 1, KEY_6),
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KEY(3, 1, KEY_F5),
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KEY(0, 2, KEY_7),
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KEY(1, 2, KEY_8),
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KEY(2, 2, KEY_9),
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KEY(3, 2, KEY_F6),
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KEY(0, 3, KEY_F7),
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KEY(1, 3, KEY_0),
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KEY(2, 3, KEY_F8),
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PERSISTENT_KEY(4, 5),
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KEY(4, 4, KEY_VOLUMEUP),
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KEY(5, 5, KEY_VOLUMEDOWN),
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0
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};
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static struct matrix_keymap_data board_map_data = {
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.keymap = board_keymap,
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.keymap_size = ARRAY_SIZE(board_keymap),
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};
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static struct twl4030_keypad_data ldp_kp_twl4030_data = {
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.keymap_data = &board_map_data,
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.rows = 6,
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.cols = 6,
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.rep = 1,
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};
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static struct gpio_keys_button ldp_gpio_keys_buttons[] = {
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[0] = {
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.code = KEY_ENTER,
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.gpio = 101,
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.desc = "enter sw",
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.active_low = 1,
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.debounce_interval = 30,
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},
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[1] = {
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.code = KEY_F1,
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.gpio = 102,
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.desc = "func 1",
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.active_low = 1,
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.debounce_interval = 30,
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},
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[2] = {
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.code = KEY_F2,
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.gpio = 103,
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.desc = "func 2",
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.active_low = 1,
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.debounce_interval = 30,
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},
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[3] = {
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.code = KEY_F3,
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.gpio = 104,
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.desc = "func 3",
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.active_low = 1,
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.debounce_interval = 30,
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},
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[4] = {
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.code = KEY_F4,
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.gpio = 105,
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.desc = "func 4",
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.active_low = 1,
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.debounce_interval = 30,
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},
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[5] = {
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.code = KEY_LEFT,
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.gpio = 106,
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.desc = "left sw",
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.active_low = 1,
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.debounce_interval = 30,
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},
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[6] = {
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.code = KEY_RIGHT,
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.gpio = 107,
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.desc = "right sw",
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.active_low = 1,
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.debounce_interval = 30,
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},
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[7] = {
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.code = KEY_UP,
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.gpio = 108,
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.desc = "up sw",
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.active_low = 1,
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.debounce_interval = 30,
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},
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[8] = {
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.code = KEY_DOWN,
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.gpio = 109,
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.desc = "down sw",
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.active_low = 1,
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.debounce_interval = 30,
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},
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};
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static struct gpio_keys_platform_data ldp_gpio_keys = {
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.buttons = ldp_gpio_keys_buttons,
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.nbuttons = ARRAY_SIZE(ldp_gpio_keys_buttons),
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.rep = 1,
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};
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static struct platform_device ldp_gpio_keys_device = {
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.name = "gpio-keys",
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.id = -1,
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.dev = {
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.platform_data = &ldp_gpio_keys,
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},
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};
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static struct omap_smsc911x_platform_data smsc911x_cfg = {
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.cs = LDP_SMSC911X_CS,
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.gpio_irq = LDP_SMSC911X_GPIO,
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.gpio_reset = -EINVAL,
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.flags = SMSC911X_USE_32BIT,
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};
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static inline void __init ldp_init_smsc911x(void)
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{
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gpmc_smsc911x_init(&smsc911x_cfg);
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}
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/* LCD */
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#define LCD_PANEL_RESET_GPIO 55
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#define LCD_PANEL_QVGA_GPIO 56
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static const struct display_timing ldp_lcd_videomode = {
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.pixelclock = { 0, 5400000, 0 },
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.hactive = { 0, 240, 0 },
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.hfront_porch = { 0, 3, 0 },
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.hback_porch = { 0, 39, 0 },
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.hsync_len = { 0, 3, 0 },
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.vactive = { 0, 320, 0 },
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.vfront_porch = { 0, 2, 0 },
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.vback_porch = { 0, 7, 0 },
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.vsync_len = { 0, 1, 0 },
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.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
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DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
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};
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static struct panel_dpi_platform_data ldp_lcd_pdata = {
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.name = "lcd",
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.source = "dpi.0",
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.data_lines = 18,
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.display_timing = &ldp_lcd_videomode,
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.enable_gpio = -1, /* filled in code */
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.backlight_gpio = -1, /* filled in code */
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};
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static struct platform_device ldp_lcd_device = {
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.name = "panel-dpi",
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.id = 0,
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.dev.platform_data = &ldp_lcd_pdata,
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};
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static struct omap_dss_board_info ldp_dss_data = {
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.default_display_name = "lcd",
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};
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static void __init ldp_display_init(void)
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{
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int r;
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static struct gpio gpios[] __initdata = {
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{LCD_PANEL_RESET_GPIO, GPIOF_OUT_INIT_HIGH, "LCD RESET"},
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{LCD_PANEL_QVGA_GPIO, GPIOF_OUT_INIT_HIGH, "LCD QVGA"},
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};
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r = gpio_request_array(gpios, ARRAY_SIZE(gpios));
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if (r) {
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pr_err("Cannot request LCD GPIOs, error %d\n", r);
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return;
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}
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omap_display_init(&ldp_dss_data);
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}
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static int ldp_twl_gpio_setup(struct device *dev, unsigned gpio, unsigned ngpio)
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{
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int res;
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/* LCD enable GPIO */
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ldp_lcd_pdata.enable_gpio = gpio + 7;
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/* Backlight enable GPIO */
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ldp_lcd_pdata.backlight_gpio = gpio + 15;
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res = platform_device_register(&ldp_lcd_device);
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if (res)
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pr_err("Unable to register LCD: %d\n", res);
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return 0;
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}
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static struct twl4030_gpio_platform_data ldp_gpio_data = {
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.setup = ldp_twl_gpio_setup,
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};
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static struct regulator_consumer_supply ldp_vmmc1_supply[] = {
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REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
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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 ldp_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 = ARRAY_SIZE(ldp_vmmc1_supply),
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.consumer_supplies = ldp_vmmc1_supply,
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};
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/* ads7846 on SPI */
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static struct regulator_consumer_supply ldp_vaux1_supplies[] = {
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REGULATOR_SUPPLY("vcc", "spi1.0"),
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};
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/* VAUX1 */
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static struct regulator_init_data ldp_vaux1 = {
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.constraints = {
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.min_uV = 3000000,
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.max_uV = 3000000,
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.apply_uV = true,
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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 = ARRAY_SIZE(ldp_vaux1_supplies),
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.consumer_supplies = ldp_vaux1_supplies,
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};
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static struct regulator_consumer_supply ldp_vpll2_supplies[] = {
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REGULATOR_SUPPLY("vdds_dsi", "omapdss"),
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REGULATOR_SUPPLY("vdds_dsi", "omapdss_dpi.0"),
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REGULATOR_SUPPLY("vdds_dsi", "omapdss_dsi.0"),
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};
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static struct regulator_init_data ldp_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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.apply_uV = true,
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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 = ARRAY_SIZE(ldp_vpll2_supplies),
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.consumer_supplies = ldp_vpll2_supplies,
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};
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static struct twl4030_platform_data ldp_twldata = {
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/* platform_data for children goes here */
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.vmmc1 = &ldp_vmmc1,
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.vaux1 = &ldp_vaux1,
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.vpll2 = &ldp_vpll2,
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.gpio = &ldp_gpio_data,
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.keypad = &ldp_kp_twl4030_data,
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};
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static int __init omap_i2c_init(void)
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{
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omap3_pmic_get_config(&ldp_twldata,
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TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_MADC, 0);
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omap3_pmic_init("twl4030", &ldp_twldata);
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omap_register_i2c_bus(2, 400, NULL, 0);
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omap_register_i2c_bus(3, 400, NULL, 0);
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return 0;
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}
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static struct omap2_hsmmc_info mmc[] __initdata = {
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{
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.mmc = 1,
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.caps = MMC_CAP_4_BIT_DATA,
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.gpio_cd = -EINVAL,
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.gpio_wp = -EINVAL,
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},
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{} /* Terminator */
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};
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static struct platform_device *ldp_devices[] __initdata = {
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&ldp_gpio_keys_device,
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};
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#ifdef CONFIG_OMAP_MUX
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static struct omap_board_mux board_mux[] __initdata = {
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{ .reg_offset = OMAP_MUX_TERMINATOR },
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};
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#endif
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static struct mtd_partition ldp_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-NAND",
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.offset = 0,
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.size = 4 * (64 * 2048), /* 512KB, 0x80000 */
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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-NAND",
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.offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
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.size = 10 * (64 * 2048), /* 1.25MB, 0x140000 */
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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{
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.name = "Boot Env-NAND",
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.offset = MTDPART_OFS_APPEND, /* Offset = 0x1c0000 */
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.size = 2 * (64 * 2048), /* 256KB, 0x40000 */
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},
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{
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.name = "Kernel-NAND",
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.offset = MTDPART_OFS_APPEND, /* Offset = 0x0200000*/
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.size = 240 * (64 * 2048), /* 30M, 0x1E00000 */
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},
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{
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.name = "File System - NAND",
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.offset = MTDPART_OFS_APPEND, /* Offset = 0x2000000 */
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.size = MTDPART_SIZ_FULL, /* 96MB, 0x6000000 */
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},
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};
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static struct regulator_consumer_supply dummy_supplies[] = {
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REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
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REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
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};
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static void __init omap_ldp_init(void)
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{
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regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
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omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
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ldp_init_smsc911x();
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omap_i2c_init();
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platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
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omap_ads7846_init(1, 54, 310, NULL);
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omap_serial_init();
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omap_sdrc_init(NULL, NULL);
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usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
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usb_musb_init(NULL);
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board_nand_init(ldp_nand_partitions, ARRAY_SIZE(ldp_nand_partitions),
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0, 0, nand_default_timings);
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omap_hsmmc_init(mmc);
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ldp_display_init();
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}
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MACHINE_START(OMAP_LDP, "OMAP LDP board")
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.atag_offset = 0x100,
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.reserve = omap_reserve,
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.map_io = omap3_map_io,
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.init_early = omap3430_init_early,
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.init_irq = omap3_init_irq,
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.handle_irq = omap3_intc_handle_irq,
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.init_machine = omap_ldp_init,
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.init_late = omap3430_init_late,
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.init_time = omap3_sync32k_timer_init,
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.restart = omap3xxx_restart,
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MACHINE_END
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