arch/arm/mach-omap2/board-zoom-display.c

   1 /*
   2  * Copyright (C) 2010 Texas Instruments Inc.
   3  *
   4  * Modified from mach-omap2/board-zoom-peripherals.c
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/gpio.h>
  15 #include <linux/spi/spi.h>
  16 #include <linux/platform_data/spi-omap2-mcspi.h>
  17 #include <video/omapdss.h>
  18 #include "board-zoom.h"
  19
  20 #include "soc.h"
  21 #include "common.h"
  22
  23 #define LCD_PANEL_RESET_GPIO_PROD       96
  24 #define LCD_PANEL_RESET_GPIO_PILOT      55
  25 #define LCD_PANEL_QVGA_GPIO             56
  26
  27 static struct gpio zoom_lcd_gpios[] __initdata = {
  28         { -EINVAL,              GPIOF_OUT_INIT_HIGH, "lcd reset" },
  29         { LCD_PANEL_QVGA_GPIO,  GPIOF_OUT_INIT_HIGH, "lcd qvga"  },
  30 };
  31
  32 static void __init zoom_lcd_panel_init(void)
  33 {
  34         zoom_lcd_gpios[0].gpio = (omap_rev() > OMAP3430_REV_ES3_0) ?
  35                         LCD_PANEL_RESET_GPIO_PROD :
  36                         LCD_PANEL_RESET_GPIO_PILOT;
  37
  38         if (gpio_request_array(zoom_lcd_gpios, ARRAY_SIZE(zoom_lcd_gpios)))
  39                 pr_err("%s: Failed to get LCD GPIOs.\n", __func__);
  40 }
  41
  42 static int zoom_panel_enable_lcd(struct omap_dss_device *dssdev)
  43 {
  44         return 0;
  45 }
  46
  47 static void zoom_panel_disable_lcd(struct omap_dss_device *dssdev)
  48 {
  49 }
  50
  51 static struct omap_dss_device zoom_lcd_device = {
  52         .name                   = "lcd",
  53         .driver_name            = "NEC_8048_panel",
  54         .type                   = OMAP_DISPLAY_TYPE_DPI,
  55         .phy.dpi.data_lines     = 24,
  56         .platform_enable        = zoom_panel_enable_lcd,
  57         .platform_disable       = zoom_panel_disable_lcd,
  58 };
  59
  60 static struct omap_dss_device *zoom_dss_devices[] = {
  61         &zoom_lcd_device,
  62 };
  63
  64 static struct omap_dss_board_info zoom_dss_data = {
  65         .num_devices            = ARRAY_SIZE(zoom_dss_devices),
  66         .devices                = zoom_dss_devices,
  67         .default_device         = &zoom_lcd_device,
  68 };
  69
  70 static struct omap2_mcspi_device_config dss_lcd_mcspi_config = {
  71         .turbo_mode             = 1,
  72 };
  73
  74 static struct spi_board_info nec_8048_spi_board_info[] __initdata = {
  75         [0] = {
  76                 .modalias               = "nec_8048_spi",
  77                 .bus_num                = 1,
  78                 .chip_select            = 2,
  79                 .max_speed_hz           = 375000,
  80                 .controller_data        = &dss_lcd_mcspi_config,
  81         },
  82 };
  83
  84 void __init zoom_display_init(void)
  85 {
  86         omap_display_init(&zoom_dss_data);
  87         spi_register_board_info(nec_8048_spi_board_info,
  88                                 ARRAY_SIZE(nec_8048_spi_board_info));
  89         zoom_lcd_panel_init();
  90 }
  91