video: tegra: support display board PM313

This change supports PM313 with 19X12 panel.
The change uses PM313 in "Single input to Dual output" mode

Bug ID : 822980
Reviewed-on: http://git-master/r/50215
(cherry picked from commit b83e795747fa860b5b7fb66b2067ebe4f15bcfd0)

Change-Id: Iabf707ded2976e9877481c215d0b1f1940781f14
Reviewed-on: http://git-master/r/60085
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>

Rebase-Id: Re8eadc35c75fa21b0a5f3cb3bee0e8cb77dc3238

1 files changed, 124 insertions, 28 deletions

diff --git a/arch/arm/mach-tegra/board-cardhu-panel.c b/arch/arm/mach-tegra/board-cardhu-panel.c
index 1bea26d26411..5702faf6a4ec 100644
--- a/arch/arm/mach-tegra/board-cardhu-panel.c
+++ b/arch/arm/mach-tegra/board-cardhu-panel.c
@@ -38,22 +38,37 @@
 #include "devices.h"
 #include "gpio-names.h"
 
-/* Select panel to be used. */
+/* Select DSI panel to be used. */
 #define DSI_PANEL_219 0
 #define DSI_PANEL_218 1
 #define AVDD_LCD PMU_TCA6416_GPIO_PORT17
 #define DSI_PANEL_RESET 0
 
-#define pm269_lvds_shutdown	TEGRA_GPIO_PN6
-#define cardhu_lvds_shutdown	TEGRA_GPIO_PL2
-#define cardhu_bl_enb		TEGRA_GPIO_PH2
-#define cardhu_bl_pwm		TEGRA_GPIO_PH0
-#define cardhu_hdmi_hpd		TEGRA_GPIO_PN7
+/* Select LVDS panel resolution. 13X7 is default */
+#define PM313_LVDS_PANEL_19X12_18BPP		1
+
+/* PM313 display board specific pins */
+#define pm313_R_FDE			TEGRA_GPIO_PW0
+#define pm313_R_FB			TEGRA_GPIO_PN4
+#define pm313_MODE0			TEGRA_GPIO_PZ4
+#define pm313_MODE1			TEGRA_GPIO_PW1
+#define pm313_lvds_shutdown		TEGRA_GPIO_PH1
+
+/* E1247 reworked for pm269 pins */
+#define e1247_pm269_lvds_shutdown	TEGRA_GPIO_PN6
+
+/* E1247 cardhu default display board pins */
+#define cardhu_lvds_shutdown		TEGRA_GPIO_PL2
+
+/* common pins( backlight ) for all display boards */
+#define cardhu_bl_enb			TEGRA_GPIO_PH2
+#define cardhu_bl_pwm			TEGRA_GPIO_PH0
+#define cardhu_hdmi_hpd			TEGRA_GPIO_PN7
 
 #if defined(DSI_PANEL_219) || defined(DSI_PANEL_218)
-#define cardhu_dsia_bl_enb	TEGRA_GPIO_PW1
-#define cardhu_dsib_bl_enb	TEGRA_GPIO_PW0
-#define cardhu_dsi_panel_reset	TEGRA_GPIO_PD2
+#define cardhu_dsia_bl_enb		TEGRA_GPIO_PW1
+#define cardhu_dsib_bl_enb		TEGRA_GPIO_PW0
+#define cardhu_dsi_panel_reset		TEGRA_GPIO_PD2
 #endif
 
 #ifdef CONFIG_TEGRA_DC
@@ -73,6 +88,7 @@ static struct regulator *cardhu_lvds_vdd_panel = NULL;
 #endif
 
 static struct board_info board_info;
+static struct board_info display_board_info;
 
 static tegra_dc_bl_output cardhu_bl_output_measured = {
 	0, 1, 2, 3, 4, 5, 6, 7,
@@ -210,7 +226,13 @@ static int cardhu_backlight_notify(struct device *unused, int brightness)
 	if (brightness > 255) {
 		pr_info("Error: Brightness > 255!\n");
 	} else {
-		brightness = bl_output[brightness];
+		/* This value depends on the panel.
+		  Current 19X12 panel with PM313 gets
+		  full brightness when the output is 0. */
+		if (display_board_info.board_id == BOARD_DISPLAY_PM313)
+			brightness = 255 - bl_output[brightness];
+		else
+			brightness = bl_output[brightness];
 	}
 
 	return brightness;
@@ -267,11 +289,24 @@ static int cardhu_panel_enable(void)
 		else
 			regulator_enable(cardhu_lvds_vdd_panel);
 	}
-	if ((board_info.board_id == BOARD_PM269) ||
-		(board_info.board_id == BOARD_E1257) ||
-		(board_info.board_id == BOARD_PM305) ||
-		(board_info.board_id == BOARD_PM311))
-		gpio_set_value(pm269_lvds_shutdown, 1);
+
+	if (display_board_info.board_id == BOARD_DISPLAY_PM313) {
+		/* lvds configuration */
+		gpio_set_value(pm313_R_FDE, 1);
+		gpio_set_value(pm313_R_FB, 1);
+		gpio_set_value(pm313_MODE0, 1);
+		gpio_set_value(pm313_MODE1, 0);
+
+		/* FIXME : it may require more or less delay for latching
+		  values correctly before enabling RGB2LVDS */
+		mdelay(100);
+		gpio_set_value(pm313_lvds_shutdown, 1);
+	} else if ((display_board_info.board_id == BOARD_DISPLAY_E1247 &&
+			board_info.board_id == BOARD_PM269) ||
+			(board_info.board_id == BOARD_E1257) ||
+			(board_info.board_id == BOARD_PM305) ||
+			(board_info.board_id == BOARD_PM311))
+		gpio_set_value(e1247_pm269_lvds_shutdown, 1);
 	else
 		gpio_set_value(cardhu_lvds_shutdown, 1);
 
@@ -291,13 +326,18 @@ static int cardhu_panel_disable(void)
 	regulator_disable(cardhu_lvds_vdd_panel);
 	regulator_put(cardhu_lvds_vdd_panel);
 	cardhu_lvds_vdd_panel= NULL;
-	if ((board_info.board_id == BOARD_PM269) ||
-		(board_info.board_id == BOARD_E1257) ||
-		(board_info.board_id == BOARD_PM305) ||
-		(board_info.board_id == BOARD_PM311))
-		gpio_set_value(pm269_lvds_shutdown, 0);
-	else
+
+	if (display_board_info.board_id == BOARD_DISPLAY_PM313) {
+		gpio_set_value(pm313_lvds_shutdown, 0);
+	} else if ((display_board_info.board_id == BOARD_DISPLAY_E1247 &&
+			board_info.board_id == BOARD_PM269) ||
+			(board_info.board_id == BOARD_E1257) ||
+			(board_info.board_id == BOARD_PM305) ||
+			(board_info.board_id == BOARD_PM311)) {
+		gpio_set_value(e1247_pm269_lvds_shutdown, 0);
+	} else {
 		gpio_set_value(cardhu_lvds_shutdown, 0);
+	}
 	return 0;
 }
 #endif
@@ -446,6 +486,22 @@ static struct resource cardhu_disp2_resources[] = {
 #endif
 
 #ifndef CONFIG_TEGRA_CARDHU_DSI
+static struct tegra_dc_mode panel_19X12_modes[] = {
+	{
+		.pclk = 154000000,
+		.h_ref_to_sync = 11,
+		.v_ref_to_sync = 1,
+		.h_sync_width = 32,
+		.v_sync_width = 6,
+		.h_back_porch = 80,
+		.v_back_porch = 26,
+		.h_active = 1920,
+		.v_active = 1200,
+		.h_front_porch = 48,
+		.v_front_porch = 3,
+	},
+};
+
 static struct tegra_dc_mode cardhu_panel_modes[] = {
 	{
 		/* 1366x768@60Hz */
@@ -985,6 +1041,7 @@ int __init cardhu_panel_init(void)
 	struct resource __maybe_unused *res;
 
 	tegra_get_board_info(&board_info);
+	tegra_get_display_board_info(&display_board_info);
 
 	cardhu_carveouts[1].base = tegra_carveout_start;
 	cardhu_carveouts[1].size = tegra_carveout_size;
@@ -997,13 +1054,52 @@ int __init cardhu_panel_init(void)
 		cardhu_disp1_out.n_modes = ARRAY_SIZE(cardhu_panel_modes_55hz);
 	}
 
-	if ((board_info.board_id == BOARD_PM269) ||
-		(board_info.board_id == BOARD_E1257) ||
-		(board_info.board_id == BOARD_PM305) ||
-		(board_info.board_id == BOARD_PM311)) {
-		gpio_request(pm269_lvds_shutdown, "lvds_shutdown");
-		gpio_direction_output(pm269_lvds_shutdown, 1);
-		tegra_gpio_enable(pm269_lvds_shutdown);
+	if (display_board_info.board_id == BOARD_DISPLAY_PM313) {
+		/* lvds configuration */
+		err = gpio_request(pm313_R_FDE, "R_FDE");
+		err |= gpio_direction_output(pm313_R_FDE, 1);
+		tegra_gpio_enable(pm313_R_FDE);
+
+		err |= gpio_request(pm313_R_FB, "R_FB");
+		err |= gpio_direction_output(pm313_R_FB, 1);
+		tegra_gpio_enable(pm313_R_FB);
+
+		err |= gpio_request(pm313_MODE0, "MODE0");
+		err |= gpio_direction_output(pm313_MODE0, 1);
+		tegra_gpio_enable(pm313_MODE0);
+
+		err |= gpio_request(pm313_MODE1, "MODE1");
+		err |= gpio_direction_output(pm313_MODE1, 0);
+		tegra_gpio_enable(pm313_MODE1);
+
+		err = gpio_request(pm313_lvds_shutdown, "lvds_shutdown");
+		/* free ride provided by bootloader */
+		err |= gpio_direction_output(pm313_lvds_shutdown, 1);
+		tegra_gpio_enable(pm313_lvds_shutdown);
+
+		if (err)
+			printk(KERN_ERR "ERROR(s) in LVDS configuration\n");
+#if defined(PM313_LVDS_PANEL_19X12_18BPP)
+		cardhu_disp1_out.modes = panel_19X12_modes;
+		cardhu_disp1_out.n_modes = ARRAY_SIZE(panel_19X12_modes);
+		cardhu_disp1_out.parent_clk = "pll_d_out0";
+		cardhu_disp1_out.depth = 18;
+
+		cardhu_fb_data.xres = 1920;
+		cardhu_fb_data.yres = 1200;
+
+		cardhu_disp2_out.parent_clk = "pll_d2_out0";
+		cardhu_hdmi_fb_data.xres = 1920;
+		cardhu_hdmi_fb_data.yres = 1200;
+#endif
+	} else if ((display_board_info.board_id == BOARD_DISPLAY_E1247 &&
+				board_info.board_id == BOARD_PM269) ||
+				(board_info.board_id == BOARD_E1257) ||
+				(board_info.board_id == BOARD_PM305) ||
+				(board_info.board_id == BOARD_PM311)) {
+		gpio_request(e1247_pm269_lvds_shutdown, "lvds_shutdown");
+		gpio_direction_output(e1247_pm269_lvds_shutdown, 1);
+		tegra_gpio_enable(e1247_pm269_lvds_shutdown);
 	} else {
 		gpio_request(cardhu_lvds_shutdown, "lvds_shutdown");
 		gpio_direction_output(cardhu_lvds_shutdown, 1);