board/samsung/smdk5420/smdk5420.c

   1 /*
   2  * Copyright (C) 2013 Samsung Electronics
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <fdtdec.h>
   9 #include <asm/io.h>
  10 #include <i2c.h>
  11 #include <lcd.h>
  12 #include <parade.h>
  13 #include <spi.h>
  14 #include <errno.h>
  15 #include <asm/gpio.h>
  16 #include <asm/arch/board.h>
  17 #include <asm/arch/cpu.h>
  18 #include <asm/arch/pinmux.h>
  19 #include <asm/arch/system.h>
  20 #include <asm/arch/dp_info.h>
  21 #include <power/tps65090_pmic.h>
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 int exynos_init(void)
  26 {
  27         return 0;
  28 }
  29
  30 #ifdef CONFIG_LCD
  31 static int has_edp_bridge(void)
  32 {
  33         int node;
  34
  35         node = fdtdec_next_compatible(gd->fdt_blob, 0, COMPAT_PARADE_PS8625);
  36
  37         /* No node for bridge in device tree. */
  38         if (node <= 0)
  39                 return 0;
  40
  41         /* Default is with bridge ic */
  42         return 1;
  43 }
  44
  45 void exynos_lcd_power_on(void)
  46 {
  47         int ret;
  48
  49 #ifdef CONFIG_POWER_TPS65090
  50         ret = tps65090_init();
  51         if (ret < 0) {
  52                 printf("%s: tps65090_init() failed\n", __func__);
  53                 return;
  54         }
  55
  56         tps65090_fet_enable(6);
  57 #endif
  58
  59         mdelay(5);
  60
  61         /* TODO(ajaykumar.rs@samsung.com): Use device tree */
  62         gpio_request(EXYNOS5420_GPIO_X35, "edp_slp#");
  63         gpio_direction_output(EXYNOS5420_GPIO_X35, 1);  /* EDP_SLP# */
  64         mdelay(10);
  65         gpio_request(EXYNOS5420_GPIO_Y77, "edp_rst#");
  66         gpio_direction_output(EXYNOS5420_GPIO_Y77, 1);  /* EDP_RST# */
  67         gpio_request(EXYNOS5420_GPIO_X26, "edp_hpd");
  68         gpio_direction_input(EXYNOS5420_GPIO_X26);      /* EDP_HPD */
  69         gpio_set_pull(EXYNOS5420_GPIO_X26, S5P_GPIO_PULL_NONE);
  70
  71         if (has_edp_bridge())
  72                 if (parade_init(gd->fdt_blob))
  73                         printf("%s: ps8625_init() failed\n", __func__);
  74 }
  75
  76 void exynos_backlight_on(unsigned int onoff)
  77 {
  78         /* For PWM */
  79         gpio_request(EXYNOS5420_GPIO_B20, "backlight_on");
  80         gpio_cfg_pin(EXYNOS5420_GPIO_B20, S5P_GPIO_FUNC(0x1));
  81         gpio_set_value(EXYNOS5420_GPIO_B20, 1);
  82
  83 #ifdef CONFIG_POWER_TPS65090
  84         tps65090_fet_enable(1);
  85 #endif
  86 }
  87 #endif
  88
  89 int board_get_revision(void)
  90 {
  91         return 0;
  92 }