From mboxrd@z Thu Jan  1 00:00:00 1970
From: alexg@meprolight.com (Alex)
Date: Thu, 8 Dec 2011 14:05:48 +0200
Subject: [PATCH] ARM: OMAP3LOGIC: Adding DSS support
Message-ID: <1323345948-14533-1-git-send-email-alexg@meprolight.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

This patch adds DSS2 support to the LogicPD OMAP 35x Torpedo boardfile. LCD and
TV-out are supported.

Signed-off-by: Alex Gershgorin <alexg@meprolight.com>
---
 arch/arm/mach-omap2/board-omap3logic.c |  151 ++++++++++++++++++++++++++++++++
 1 files changed, 151 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3logic.c b/arch/arm/mach-omap2/board-omap3logic.c
index 7c0f193..86175fa 100644
--- a/arch/arm/mach-omap2/board-omap3logic.c
+++ b/arch/arm/mach-omap2/board-omap3logic.c
@@ -7,6 +7,9 @@
  * Copyright (C) 2010 Logic Product Development, Inc.
  * Peter Barada <peter.barada@logicpd.com>
  *
+ * Copyright (C) 2011 Meprolight, Ltd.
+ * Alex Gershgorin <alexg@meprolight.com>
+ *
  * Modified from Beagle, EVM, and RX51
  *
  * This program is free software; you can redistribute it and/or modify
@@ -44,6 +47,10 @@
 #include <plat/gpmc-smsc911x.h>
 #include <plat/gpmc.h>
 #include <plat/sdrc.h>
+#include <plat/vram.h>
+
+#include <video/omapdss.h>
+#include <video/omap-panel-generic-dpi.h>
 
 #define OMAP3LOGIC_SMSC911X_CS			1
 
@@ -58,6 +65,14 @@ static struct regulator_consumer_supply omap3logic_vmmc1_supply[] = {
 	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 };
 
+static struct regulator_consumer_supply omap3logic_vdds_supplies[] = {
+	REGULATOR_SUPPLY("vdds_sdi", "omapdss"),
+	REGULATOR_SUPPLY("vdds_dsi", "omapdss"),
+};
+
+static struct regulator_consumer_supply omap3logic_vdac_supply =
+	REGULATOR_SUPPLY("vdda_dac", "omapdss_venc");
+
 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 static struct regulator_init_data omap3logic_vmmc1 = {
 	.constraints = {
@@ -74,6 +89,34 @@ static struct regulator_init_data omap3logic_vmmc1 = {
 	.consumer_supplies      = omap3logic_vmmc1_supply,
 };
 
+static struct regulator_init_data omap3logic_vpll2 = {
+	.constraints = {
+		.name			= "VDDS_DSI",
+		.min_uV			= 1800000,
+		.max_uV			= 1800000,
+		.apply_uV		= true,
+		.always_on		= true,
+		.valid_modes_mask	= REGULATOR_MODE_NORMAL
+					| REGULATOR_MODE_STANDBY,
+		.valid_ops_mask		= REGULATOR_CHANGE_MODE,
+	},
+	.num_consumer_supplies  = ARRAY_SIZE(omap3logic_vdds_supplies),
+	.consumer_supplies      = omap3logic_vdds_supplies,
+};
+
+static struct regulator_init_data omap3logic_vdac = {
+	.constraints = {
+		.min_uV			= 1800000,
+		.max_uV			= 1800000,
+		.valid_modes_mask	= REGULATOR_MODE_NORMAL
+					| REGULATOR_MODE_STANDBY,
+		.valid_ops_mask		= REGULATOR_CHANGE_MODE
+					| REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies	= 1,
+	.consumer_supplies	= &omap3logic_vdac_supply,
+};
+
 static struct twl4030_gpio_platform_data omap3logic_gpio_data = {
 	.gpio_base	= OMAP_MAX_GPIO_LINES,
 	.irq_base	= TWL4030_GPIO_IRQ_BASE,
@@ -91,6 +134,8 @@ static struct twl4030_platform_data omap3logic_twldata = {
 	/* platform_data for children goes here */
 	.gpio		= &omap3logic_gpio_data,
 	.vmmc1		= &omap3logic_vmmc1,
+	.vpll2		= &omap3logic_vpll2,
+	.vdac		= &omap3logic_vdac,
 };
 
 static int __init omap3logic_i2c_init(void)
@@ -182,6 +227,110 @@ static inline void __init board_smsc911x_init(void)
 	gpmc_smsc911x_init(&board_smsc911x_data);
 }
 
+#if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
+
+#define OMAP3_TORPEDO_LCD_BACKLIGHT_GPIO	154
+#define OMAP3_TORPEDO_LCD_ENABLE_GPIO		155
+#define OMAP3_TORPEDO_LCD_PWM_GPIO		56
+
+static struct gpio omap3logic_dss_gpios[] __initdata = {
+	{OMAP3_TORPEDO_LCD_BACKLIGHT_GPIO, GPIOF_OUT_INIT_LOW, "lcd_bl_pwr"},
+	{OMAP3_TORPEDO_LCD_PWM_GPIO, GPIOF_OUT_INIT_LOW, "lcd bl enable"},
+	{OMAP3_TORPEDO_LCD_ENABLE_GPIO, GPIOF_OUT_INIT_LOW, "lcd enable"},
+};
+
+static int omap3logic_enable_lcd(struct omap_dss_device *dssdev)
+{
+	gpio_set_value_cansleep(OMAP3_TORPEDO_LCD_ENABLE_GPIO, 1);
+	msleep(20);
+	gpio_set_value_cansleep(OMAP3_TORPEDO_LCD_BACKLIGHT_GPIO, 1);
+
+	return 0;
+}
+
+static void omap3logic_disable_lcd(struct omap_dss_device *dssdev)
+{
+	gpio_set_value_cansleep(OMAP3_TORPEDO_LCD_ENABLE_GPIO, 0);
+	msleep(20);
+	gpio_set_value_cansleep(OMAP3_TORPEDO_LCD_BACKLIGHT_GPIO, 0);
+}
+
+static struct panel_generic_dpi_data lcd_panel = {
+	.name			= "sharp_lq",
+	.platform_enable	= omap3logic_enable_lcd,
+	.platform_disable	= omap3logic_disable_lcd,
+};
+
+static struct omap_dss_device omap3logic_lcd_device = {
+	.name			= "lcd",
+	.driver_name		= "generic_dpi_panel",
+	.type			= OMAP_DISPLAY_TYPE_DPI,
+	.data			= &lcd_panel,
+	.phy.dpi.data_lines	= 16,
+};
+
+static struct omap_dss_device omap3logic_tv_device = {
+	.name			= "tv",
+	.driver_name		= "venc",
+	.type			= OMAP_DISPLAY_TYPE_VENC,
+	.phy.venc.type		= OMAP_DSS_VENC_TYPE_SVIDEO,
+};
+
+static struct omap_dss_device *omap3logic_dss_devices[] = {
+	&omap3logic_lcd_device,
+	&omap3logic_tv_device,
+};
+
+static struct omap_dss_board_info omap3logic_dss_data = {
+	.num_devices		= ARRAY_SIZE(omap3logic_dss_devices),
+	.devices		= omap3logic_dss_devices,
+	.default_device		= &omap3logic_lcd_device,
+};
+
+static void __init omap3logic_display_init(void)
+{
+	int r;
+
+	r = gpio_request_array(omap3logic_dss_gpios,
+			       ARRAY_SIZE(omap3logic_dss_gpios));
+	if (r) {
+		printk(KERN_ERR "failed to get lcd_panel_* gpios\n");
+		return;
+	}
+
+	gpio_export(OMAP3_TORPEDO_LCD_BACKLIGHT_GPIO, 0);
+	gpio_export(OMAP3_TORPEDO_LCD_ENABLE_GPIO, 0);
+	gpio_export(OMAP3_TORPEDO_LCD_PWM_GPIO, 0);
+
+	r = omap_display_init(&omap3logic_dss_data);
+	if (r) {
+		pr_err("OMAP3LOGIC: failed to register DSS device\n");
+		gpio_free_array(omap3logic_dss_gpios,
+				ARRAY_SIZE(omap3logic_dss_gpios));
+	}
+}
+
+static void __init omap3logic_video_mem_init(void)
+{
+	/*
+	 * GFX 480x272x32bpp
+	 * VID1/2 480x272x32bpp double buffered
+	 */
+	omap_vram_set_sdram_vram(PAGE_ALIGN(480 * 272 * 4) +
+			2 * PAGE_ALIGN(480 * 272 * 4 * 2), 0);
+}
+
+#else
+static void __init omap3logic_display_init(void) { }
+static void __init omap3logic_video_mem_init(void){ }
+#endif /* defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE) */
+
+static void __init omap3logic_reserve(void)
+{
+	omap3logic_video_mem_init();
+	omap_reserve();
+}
+
 #ifdef CONFIG_OMAP_MUX
 static struct omap_board_mux board_mux[] __initdata = {
 	{ .reg_offset = OMAP_MUX_TERMINATOR },
@@ -197,6 +346,7 @@ static void __init omap3logic_init(void)
 	omap_sdrc_init(NULL, NULL);
 	board_mmc_init();
 	board_smsc911x_init();
+	omap3logic_display_init();
 
 	/* Ensure SDRC pins are mux'd for self-refresh */
 	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
@@ -205,6 +355,7 @@ static void __init omap3logic_init(void)
 
 MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
 	.atag_offset	= 0x100,
+	.reserve	= omap3logic_reserve,
 	.map_io		= omap3_map_io,
 	.init_early	= omap35xx_init_early,
 	.init_irq	= omap3_init_irq,
-- 
1.7.0.4