/* * Copyright (C) 2010 Texas Instruments Inc. * * Modified from mach-omap2/board-zoom-peripherals.c * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> #include <linux/gpio.h> #include <linux/i2c/twl.h> #include <linux/spi/spi.h> #include <linux/platform_data/spi-omap2-mcspi.h> #include <video/omapdss.h> #include "board-zoom.h" #include "soc.h" #include "common.h" #define LCD_PANEL_RESET_GPIO_PROD 96 #define LCD_PANEL_RESET_GPIO_PILOT 55 #define LCD_PANEL_QVGA_GPIO 56 static struct gpio zoom_lcd_gpios[] __initdata = { { -EINVAL, GPIOF_OUT_INIT_HIGH, "lcd reset" }, { LCD_PANEL_QVGA_GPIO, GPIOF_OUT_INIT_HIGH, "lcd qvga" }, }; static void __init zoom_lcd_panel_init(void) { zoom_lcd_gpios[0].gpio = (omap_rev() > OMAP3430_REV_ES3_0) ? LCD_PANEL_RESET_GPIO_PROD : LCD_PANEL_RESET_GPIO_PILOT; if (gpio_request_array(zoom_lcd_gpios, ARRAY_SIZE(zoom_lcd_gpios))) pr_err("%s: Failed to get LCD GPIOs.\n", __func__); } static int zoom_panel_enable_lcd(struct omap_dss_device *dssdev) { return 0; } static void zoom_panel_disable_lcd(struct omap_dss_device *dssdev) { } /* * PWMA/B register offsets (TWL4030_MODULE_PWMA) */ #define TWL_INTBR_PMBR1 0xD #define TWL_INTBR_GPBR1 0xC #define TWL_LED_PWMON 0x0 #define TWL_LED_PWMOFF 0x1 static int zoom_set_bl_intensity(struct omap_dss_device *dssdev, int level) { #ifdef CONFIG_TWL4030_CORE unsigned char c; u8 mux_pwm, enb_pwm; if (level > 100) return -1; twl_i2c_read_u8(TWL4030_MODULE_INTBR, &mux_pwm, TWL_INTBR_PMBR1); twl_i2c_read_u8(TWL4030_MODULE_INTBR, &enb_pwm, TWL_INTBR_GPBR1); if (level == 0) { /* disable pwm1 output and clock */ enb_pwm = enb_pwm & 0xF5; /* change pwm1 pin to gpio pin */ mux_pwm = mux_pwm & 0xCF; twl_i2c_write_u8(TWL4030_MODULE_INTBR, enb_pwm, TWL_INTBR_GPBR1); twl_i2c_write_u8(TWL4030_MODULE_INTBR, mux_pwm, TWL_INTBR_PMBR1); return 0; } if (!((enb_pwm & 0xA) && (mux_pwm & 0x30))) { /* change gpio pin to pwm1 pin */ mux_pwm = mux_pwm | 0x30; /* enable pwm1 output and clock*/ enb_pwm = enb_pwm | 0x0A; twl_i2c_write_u8(TWL4030_MODULE_INTBR, mux_pwm, TWL_INTBR_PMBR1); twl_i2c_write_u8(TWL4030_MODULE_INTBR, enb_pwm, TWL_INTBR_GPBR1); } c = ((50 * (100 - level)) / 100) + 1; twl_i2c_write_u8(TWL4030_MODULE_PWM1, 0x7F, TWL_LED_PWMOFF); twl_i2c_write_u8(TWL4030_MODULE_PWM1, c, TWL_LED_PWMON); #else pr_warn("Backlight not enabled\n"); #endif return 0; } static struct omap_dss_device zoom_lcd_device = { .name = "lcd", .driver_name = "NEC_8048_panel", .type = OMAP_DISPLAY_TYPE_DPI, .phy.dpi.data_lines = 24, .platform_enable = zoom_panel_enable_lcd, .platform_disable = zoom_panel_disable_lcd, .max_backlight_level = 100, .set_backlight = zoom_set_bl_intensity, }; static struct omap_dss_device *zoom_dss_devices[] = { &zoom_lcd_device, }; static struct omap_dss_board_info zoom_dss_data = { .num_devices = ARRAY_SIZE(zoom_dss_devices), .devices = zoom_dss_devices, .default_device = &zoom_lcd_device, }; static struct omap2_mcspi_device_config dss_lcd_mcspi_config = { .turbo_mode = 1, }; static struct spi_board_info nec_8048_spi_board_info[] __initdata = { [0] = { .modalias = "nec_8048_spi", .bus_num = 1, .chip_select = 2, .max_speed_hz = 375000, .controller_data = &dss_lcd_mcspi_config, }, }; void __init zoom_display_init(void) { omap_display_init(&zoom_dss_data); spi_register_board_info(nec_8048_spi_board_info, ARRAY_SIZE(nec_8048_spi_board_info)); zoom_lcd_panel_init(); }