[U-Boot] [PATCH 5/6] smdk5420: Implement callbacks needed by exynos_fb driver

[Ajay Kumar]

Add callbacks to set up DP-HPD, backlight and LCD power
on SMDK5420.

Signed-off-by: Ajay Kumar <ajaykumar.rs at samsung.com>
---
 board/samsung/smdk5420/smdk5420.c | 118 +++++++++++---------------------------
 1 file changed, 34 insertions(+), 84 deletions(-)

diff --git a/board/samsung/smdk5420/smdk5420.c b/board/samsung/smdk5420/smdk5420.c
index cf76455..3f29ce0 100644
--- a/board/samsung/smdk5420/smdk5420.c
+++ b/board/samsung/smdk5420/smdk5420.c
@@ -137,98 +137,48 @@ int board_mmc_init(bd_t *bis)
 #endif
 
 #ifdef CONFIG_LCD
-void cfg_lcd_gpio(void)
+void exynos_cfg_lcd_gpio(void)
 {
-	struct exynos5_gpio_part1 *gpio1 =
-		(struct exynos5_gpio_part1 *)samsung_get_base_gpio_part1();
+	struct exynos5420_gpio_part2 *gpio2 =
+		(struct exynos5420_gpio_part2 *)samsung_get_base_gpio_part2();
 
-	/* For Backlight */
+	/* Set Hotplug detect for DP */
+	s5p_gpio_cfg_pin(&gpio2->x0, 7, GPIO_FUNC(0x3));
+}
+
+void exynos_backlight_on(unsigned int onoff)
+{
+	struct exynos5420_gpio_part1 *gpio1 =
+		(struct exynos5420_gpio_part1 *)samsung_get_base_gpio_part1();
+
+	struct exynos5420_gpio_part2 *gpio2 =
+		(struct exynos5420_gpio_part2 *)samsung_get_base_gpio_part2();
+
+	/* For PWM */
 	s5p_gpio_cfg_pin(&gpio1->b2, 0, GPIO_OUTPUT);
 	s5p_gpio_set_value(&gpio1->b2, 0, 1);
 
-	/* LCD power on */
-	s5p_gpio_cfg_pin(&gpio1->x1, 5, GPIO_OUTPUT);
-	s5p_gpio_set_value(&gpio1->x1, 5, 1);
-
-	/* Set Hotplug detect for DP */
-	s5p_gpio_cfg_pin(&gpio1->x0, 7, GPIO_FUNC(0x3));
+	/* BL_EN */
+	s5p_gpio_cfg_pin(&gpio2->x1, 5, GPIO_OUTPUT);
+	s5p_gpio_set_value(&gpio2->x1, 5, 1);
 }
 
-vidinfo_t panel_info = {
-	.vl_freq	= 60,
-	.vl_col		= 2560,
-	.vl_row		= 1600,
-	.vl_width	= 2560,
-	.vl_height	= 1600,
-	.vl_clkp	= CONFIG_SYS_LOW,
-	.vl_hsp		= CONFIG_SYS_LOW,
-	.vl_vsp		= CONFIG_SYS_LOW,
-	.vl_dp		= CONFIG_SYS_LOW,
-	.vl_bpix	= 4,	/* LCD_BPP = 2^4, for output conosle on LCD */
-
-	/* wDP panel timing infomation */
-	.vl_hspw	= 32,
-	.vl_hbpd	= 80,
-	.vl_hfpd	= 48,
-
-	.vl_vspw	= 6,
-	.vl_vbpd	= 37,
-	.vl_vfpd	= 3,
-	.vl_cmd_allow_len = 0xf,
-
-	.win_id		= 3,
-	.cfg_gpio	= cfg_lcd_gpio,
-	.backlight_on	= NULL,
-	.lcd_power_on	= NULL,
-	.reset_lcd	= NULL,
-	.dual_lcd_enabled = 0,
-
-	.init_delay	= 0,
-	.power_on_delay = 0,
-	.reset_delay	= 0,
-	.interface_mode = FIMD_RGB_INTERFACE,
-	.dp_enabled	= 1,
-};
-
-static struct edp_device_info edp_info = {
-	.disp_info = {
-		.h_res = 2560,
-		.h_sync_width = 32,
-		.h_back_porch = 80,
-		.h_front_porch = 48,
-		.v_res = 1600,
-		.v_sync_width  = 6,
-		.v_back_porch = 37,
-		.v_front_porch = 3,
-		.v_sync_rate = 60,
-	},
-	.lt_info = {
-		.lt_status = DP_LT_NONE,
-	},
-	.video_info = {
-		.master_mode = 0,
-		.bist_mode = DP_DISABLE,
-		.bist_pattern = NO_PATTERN,
-		.h_sync_polarity = 0,
-		.v_sync_polarity = 0,
-		.interlaced = 0,
-		.color_space = COLOR_RGB,
-		.dynamic_range = VESA,
-		.ycbcr_coeff = COLOR_YCBCR601,
-		.color_depth = COLOR_8,
-	},
-};
-
-static struct exynos_dp_platform_data dp_platform_data = {
-	.phy_enable	= set_dp_phy_ctrl,
-	.edp_dev_info	= &edp_info,
-};
-
-void init_panel_info(vidinfo_t *vid)
+void exynos_lcd_power_on(void)
 {
-	vid->rgb_mode   = MODE_RGB_P,
-
-	exynos_set_dp_platform_data(&dp_platform_data);
+	int pmic_bus, pmic_i2caddr, ldo38_reg, old_bus;
+	u8 value;
+
+	/* enable VDD_28IO_DP: LDO38 should be at 2.8V */
+	pmic_bus = 4;
+	pmic_i2caddr = 0x66;
+	ldo38_reg = 0x62;
+	value = 0x78;
+
+	old_bus = i2c_get_bus_num();
+	i2c_set_bus_num(pmic_bus);
+	if (i2c_write(pmic_i2caddr, ldo38_reg, 1, &value, 1))
+		printf("i2c write fail. Failed to enable VDD_28IO_DP\n");
+	i2c_set_bus_num(old_bus);
 }
 #endif
 
-- 
1.7.12.4