| /* |
| * 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 <plat/mcspi.h> |
| #include <video/omapdss.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 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) |
| { |
| 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); |
| |
| 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, |
| .single_channel = 1, /* 0: slave, 1: master */ |
| }; |
| |
| 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(); |
| } |
| |