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332 lines
7.9 KiB
332 lines
7.9 KiB
/*
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* linux/arch/arm/mach-omap2/board-am3517evm.c
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*
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* Copyright (C) 2009 Texas Instruments Incorporated
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* Author: Ranjith Lohithakshan <ranjithl@ti.com>
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*
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* Based on mach-omap2/board-omap3evm.c
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
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* whether express or implied; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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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/gpio.h>
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#include <linux/i2c/pca953x.h>
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#include <mach/hardware.h>
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#include <mach/am35xx.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 <plat/board.h>
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#include <plat/common.h>
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#include <plat/usb.h>
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#include <plat/display.h>
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#include "mux.h"
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#define LCD_PANEL_PWR 176
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#define LCD_PANEL_BKLIGHT_PWR 182
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#define LCD_PANEL_PWM 181
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static struct i2c_board_info __initdata am3517evm_i2c_boardinfo[] = {
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{
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I2C_BOARD_INFO("s35390a", 0x30),
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.type = "s35390a",
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},
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};
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/*
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* RTC - S35390A
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*/
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#define GPIO_RTCS35390A_IRQ 55
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static void __init am3517_evm_rtc_init(void)
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{
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int r;
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omap_mux_init_gpio(GPIO_RTCS35390A_IRQ, OMAP_PIN_INPUT_PULLUP);
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r = gpio_request(GPIO_RTCS35390A_IRQ, "rtcs35390a-irq");
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if (r < 0) {
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printk(KERN_WARNING "failed to request GPIO#%d\n",
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GPIO_RTCS35390A_IRQ);
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return;
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}
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r = gpio_direction_input(GPIO_RTCS35390A_IRQ);
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if (r < 0) {
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printk(KERN_WARNING "GPIO#%d cannot be configured as input\n",
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GPIO_RTCS35390A_IRQ);
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gpio_free(GPIO_RTCS35390A_IRQ);
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return;
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}
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am3517evm_i2c_boardinfo[0].irq = gpio_to_irq(GPIO_RTCS35390A_IRQ);
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}
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/*
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* I2C GPIO Expander - TCA6416
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*/
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/* Mounted on Base-Board */
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static struct pca953x_platform_data am3517evm_gpio_expander_info_0 = {
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.gpio_base = OMAP_MAX_GPIO_LINES,
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};
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static struct i2c_board_info __initdata am3517evm_tca6416_info_0[] = {
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{
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I2C_BOARD_INFO("tca6416", 0x21),
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.platform_data = &am3517evm_gpio_expander_info_0,
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},
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};
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/* Mounted on UI Card */
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static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_1 = {
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.gpio_base = OMAP_MAX_GPIO_LINES + 16,
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};
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static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_2 = {
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.gpio_base = OMAP_MAX_GPIO_LINES + 32,
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};
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static struct i2c_board_info __initdata am3517evm_ui_tca6416_info[] = {
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{
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I2C_BOARD_INFO("tca6416", 0x20),
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.platform_data = &am3517evm_ui_gpio_expander_info_1,
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},
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{
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I2C_BOARD_INFO("tca6416", 0x21),
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.platform_data = &am3517evm_ui_gpio_expander_info_2,
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},
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};
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static int __init am3517_evm_i2c_init(void)
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{
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omap_register_i2c_bus(1, 400, NULL, 0);
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omap_register_i2c_bus(2, 400, am3517evm_tca6416_info_0,
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ARRAY_SIZE(am3517evm_tca6416_info_0));
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omap_register_i2c_bus(3, 400, am3517evm_ui_tca6416_info,
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ARRAY_SIZE(am3517evm_ui_tca6416_info));
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return 0;
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}
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static int lcd_enabled;
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static int dvi_enabled;
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static void __init am3517_evm_display_init(void)
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{
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int r;
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omap_mux_init_gpio(LCD_PANEL_PWR, OMAP_PIN_INPUT_PULLUP);
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omap_mux_init_gpio(LCD_PANEL_BKLIGHT_PWR, OMAP_PIN_INPUT_PULLDOWN);
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omap_mux_init_gpio(LCD_PANEL_PWM, OMAP_PIN_INPUT_PULLDOWN);
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/*
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* Enable GPIO 182 = LCD Backlight Power
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*/
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r = gpio_request(LCD_PANEL_BKLIGHT_PWR, "lcd_backlight_pwr");
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if (r) {
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printk(KERN_ERR "failed to get lcd_backlight_pwr\n");
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return;
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}
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gpio_direction_output(LCD_PANEL_BKLIGHT_PWR, 1);
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/*
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* Enable GPIO 181 = LCD Panel PWM
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*/
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r = gpio_request(LCD_PANEL_PWM, "lcd_pwm");
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if (r) {
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printk(KERN_ERR "failed to get lcd_pwm\n");
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goto err_1;
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}
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gpio_direction_output(LCD_PANEL_PWM, 1);
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/*
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* Enable GPIO 176 = LCD Panel Power enable pin
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*/
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r = gpio_request(LCD_PANEL_PWR, "lcd_panel_pwr");
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if (r) {
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printk(KERN_ERR "failed to get lcd_panel_pwr\n");
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goto err_2;
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}
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gpio_direction_output(LCD_PANEL_PWR, 1);
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printk(KERN_INFO "Display initialized successfully\n");
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return;
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err_2:
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gpio_free(LCD_PANEL_PWM);
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err_1:
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gpio_free(LCD_PANEL_BKLIGHT_PWR);
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}
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static int am3517_evm_panel_enable_lcd(struct omap_dss_device *dssdev)
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{
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if (dvi_enabled) {
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printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
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return -EINVAL;
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}
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gpio_set_value(LCD_PANEL_PWR, 1);
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lcd_enabled = 1;
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return 0;
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}
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static void am3517_evm_panel_disable_lcd(struct omap_dss_device *dssdev)
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{
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gpio_set_value(LCD_PANEL_PWR, 0);
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lcd_enabled = 0;
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}
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static struct omap_dss_device am3517_evm_lcd_device = {
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.type = OMAP_DISPLAY_TYPE_DPI,
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.name = "lcd",
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.driver_name = "sharp_lq_panel",
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.phy.dpi.data_lines = 16,
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.platform_enable = am3517_evm_panel_enable_lcd,
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.platform_disable = am3517_evm_panel_disable_lcd,
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};
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static int am3517_evm_panel_enable_tv(struct omap_dss_device *dssdev)
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{
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return 0;
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}
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static void am3517_evm_panel_disable_tv(struct omap_dss_device *dssdev)
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{
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}
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static struct omap_dss_device am3517_evm_tv_device = {
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.type = OMAP_DISPLAY_TYPE_VENC,
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.name = "tv",
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.driver_name = "venc",
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.phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
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.platform_enable = am3517_evm_panel_enable_tv,
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.platform_disable = am3517_evm_panel_disable_tv,
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};
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static int am3517_evm_panel_enable_dvi(struct omap_dss_device *dssdev)
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{
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if (lcd_enabled) {
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printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
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return -EINVAL;
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}
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dvi_enabled = 1;
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return 0;
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}
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static void am3517_evm_panel_disable_dvi(struct omap_dss_device *dssdev)
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{
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dvi_enabled = 0;
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}
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static struct omap_dss_device am3517_evm_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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.platform_enable = am3517_evm_panel_enable_dvi,
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.platform_disable = am3517_evm_panel_disable_dvi,
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};
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static struct omap_dss_device *am3517_evm_dss_devices[] = {
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&am3517_evm_lcd_device,
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&am3517_evm_tv_device,
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&am3517_evm_dvi_device,
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};
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static struct omap_dss_board_info am3517_evm_dss_data = {
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.num_devices = ARRAY_SIZE(am3517_evm_dss_devices),
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.devices = am3517_evm_dss_devices,
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.default_device = &am3517_evm_lcd_device,
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};
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struct platform_device am3517_evm_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 = &am3517_evm_dss_data,
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},
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};
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/*
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* Board initialization
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*/
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static struct omap_board_config_kernel am3517_evm_config[] __initdata = {
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};
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static struct platform_device *am3517_evm_devices[] __initdata = {
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&am3517_evm_dss_device,
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};
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static void __init am3517_evm_init_irq(void)
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{
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omap_board_config = am3517_evm_config;
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omap_board_config_size = ARRAY_SIZE(am3517_evm_config);
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omap2_init_common_hw(NULL, NULL);
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omap_init_irq();
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omap_gpio_init();
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}
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static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
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.port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
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.port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
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.port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
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.phy_reset = true,
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.reset_gpio_port[0] = 57,
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.reset_gpio_port[1] = -EINVAL,
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.reset_gpio_port[2] = -EINVAL
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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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#else
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#define board_mux NULL
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#endif
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static void __init am3517_evm_init(void)
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{
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omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
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am3517_evm_i2c_init();
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platform_add_devices(am3517_evm_devices,
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ARRAY_SIZE(am3517_evm_devices));
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omap_serial_init();
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/* Configure GPIO for EHCI port */
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omap_mux_init_gpio(57, OMAP_PIN_OUTPUT);
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usb_ehci_init(&ehci_pdata);
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/* DSS */
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am3517_evm_display_init();
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/* RTC - S35390A */
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am3517_evm_rtc_init();
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i2c_register_board_info(1, am3517evm_i2c_boardinfo,
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ARRAY_SIZE(am3517evm_i2c_boardinfo));
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}
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static void __init am3517_evm_map_io(void)
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{
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omap2_set_globals_343x();
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omap34xx_map_common_io();
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}
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MACHINE_START(OMAP3517EVM, "OMAP3517/AM3517 EVM")
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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 = am3517_evm_map_io,
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.init_irq = am3517_evm_init_irq,
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.init_machine = am3517_evm_init,
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.timer = &omap_timer,
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MACHINE_END
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