1 files changed, 473 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/board-colibri_t20-panel.c b/arch/arm/mach-tegra/board-colibri_t20-panel.c
new file mode 100644
index 000000000000..4c11b6c7f6e1
--- /dev/null
+++ b/arch/arm/mach-tegra/board-colibri_t20-panel.c
@@ -0,0 +1,473 @@
+/*
+ * arch/arm/mach-tegra/board-colibri_t20-panel.c
+ *
+ * Copyright (c) 2012, Toradex, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <asm/mach-types.h>
+
+#include <linux/delay.h>
+#include <linux/earlysuspend.h>
+#include <linux/gpio.h>
+#include <linux/nvhost.h>
+#include <linux/nvmap.h>
+#include <linux/platform_device.h>
+#include <linux/pwm_backlight.h>
+#include <linux/regulator/consumer.h>
+#include <linux/resource.h>
+
+#include <mach/dc.h>
+#include <mach/fb.h>
+#include <mach/iomap.h>
+#include <mach/irqs.h>
+
+#include "board.h"
+#include "board-colibri_t20.h"
+#include "devices.h"
+#include "gpio-names.h"
+#include "tegra2_host1x_devices.h"
+
+#ifndef COLIBRI_T20_VI
+#define colibri_t20_bl_enb	TEGRA_GPIO_PT4	/* BL_ON */
+#endif
+#define colibri_t20_hdmi_hpd	TEGRA_GPIO_PN7	/* HOTPLUG_DETECT */
+#ifdef IRIS
+#define iris_dac_psave		TEGRA_GPIO_PA0	/* DAC_PSAVE# */
+#endif
+
+#ifdef CONFIG_TEGRA_DC
+static struct regulator *colibri_t20_hdmi_reg = NULL;
+static struct regulator *colibri_t20_hdmi_pll = NULL;
+#endif
+
+#ifndef COLIBRI_T20_VI
+static int colibri_t20_backlight_init(struct device *dev) {
+	int ret;
+
+	ret = gpio_request(colibri_t20_bl_enb, "BL_ON");
+	if (ret < 0)
+		return ret;
+
+	ret = gpio_direction_output(colibri_t20_bl_enb, 1);
+	if (ret < 0)
+		gpio_free(colibri_t20_bl_enb);
+
+	return ret;
+};
+
+static void colibri_t20_backlight_exit(struct device *dev) {
+	gpio_set_value(colibri_t20_bl_enb, 0);
+	gpio_free(colibri_t20_bl_enb);
+}
+
+static int colibri_t20_backlight_notify(struct device *dev, int brightness)
+{
+	struct platform_pwm_backlight_data *pdata = dev->platform_data;
+
+	gpio_set_value(colibri_t20_bl_enb, !!brightness);
+
+	/* Unified TFT interface displays (e.g. EDT ET070080DH6) LEDCTRL pin
+	   with inverted behaviour (e.g. 0V brightest vs. 3.3V darkest)
+	   Note: brightness polarity display model specific */
+	if (brightness)	return pdata->max_brightness - brightness;
+	else return brightness;
+}
+
+static int colibri_t20_disp1_check_fb(struct device *dev, struct fb_info *info);
+
+static struct platform_pwm_backlight_data colibri_t20_backlight_data = {
+#ifndef MECS_TELLURIUM
+	.pwm_id		= 0, /* PWM<A> (PMFM_PWM0) */
+#else
+	.pwm_id		= 2, /* PWM<C> (PMFM_PWM2) */
+#endif
+	.max_brightness	= 255,
+	.dft_brightness	= 127,
+	.pwm_period_ns	= 1000000, /* 1 kHz */
+	.init		= colibri_t20_backlight_init,
+	.exit		= colibri_t20_backlight_exit,
+	.notify		= colibri_t20_backlight_notify,
+	/* Only toggle backlight on fb blank notifications for disp1 */
+	.check_fb	= colibri_t20_disp1_check_fb,
+};
+
+static struct platform_device colibri_t20_backlight_device = {
+	.name	= "pwm-backlight",
+	.id	= -1,
+	.dev	= {
+		.platform_data = &colibri_t20_backlight_data,
+	},
+};
+#endif /* !COLIBRI_T20_VI */
+
+#ifdef CONFIG_TEGRA_DC
+static int colibri_t20_panel_enable(void)
+{
+#ifdef IRIS
+	gpio_set_value(iris_dac_psave, 1);
+#endif
+	return 0;
+}
+
+static int colibri_t20_panel_disable(void)
+{
+#ifdef IRIS
+	gpio_set_value(iris_dac_psave, 0);
+#endif
+	return 0;
+}
+
+static int colibri_t20_hdmi_enable(void)
+{
+	if (!colibri_t20_hdmi_reg) {
+		colibri_t20_hdmi_reg = regulator_get(NULL, "avdd_hdmi"); /* LD07 */
+		if (IS_ERR_OR_NULL(colibri_t20_hdmi_reg)) {
+			pr_err("hdmi: couldn't get regulator avdd_hdmi\n");
+			colibri_t20_hdmi_reg = NULL;
+			return PTR_ERR(colibri_t20_hdmi_reg);
+		}
+	}
+	regulator_enable(colibri_t20_hdmi_reg);
+
+	if (!colibri_t20_hdmi_pll) {
+		colibri_t20_hdmi_pll = regulator_get(NULL, "avdd_hdmi_pll"); /* LD08 */
+		if (IS_ERR_OR_NULL(colibri_t20_hdmi_pll)) {
+			pr_err("hdmi: couldn't get regulator avdd_hdmi_pll\n");
+			colibri_t20_hdmi_pll = NULL;
+			regulator_disable(colibri_t20_hdmi_reg);
+			colibri_t20_hdmi_reg = NULL;
+			return PTR_ERR(colibri_t20_hdmi_pll);
+		}
+	}
+	regulator_enable(colibri_t20_hdmi_pll);
+	return 0;
+}
+
+static int colibri_t20_hdmi_disable(void)
+{
+	regulator_disable(colibri_t20_hdmi_reg);
+	regulator_disable(colibri_t20_hdmi_pll);
+	return 0;
+}
+
+static struct resource colibri_t20_disp1_resources[] = {
+	{
+		.name	= "irq",
+		.start	= INT_DISPLAY_GENERAL,
+		.end	= INT_DISPLAY_GENERAL,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.name	= "regs",
+		.start	= TEGRA_DISPLAY_BASE,
+		.end	= TEGRA_DISPLAY_BASE + TEGRA_DISPLAY_SIZE-1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.name	= "fbmem",
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct resource colibri_t20_disp2_resources[] = {
+	{
+		.name	= "irq",
+		.start	= INT_DISPLAY_B_GENERAL,
+		.end	= INT_DISPLAY_B_GENERAL,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.name	= "regs",
+		.start	= TEGRA_DISPLAY2_BASE,
+		.end	= TEGRA_DISPLAY2_BASE + TEGRA_DISPLAY2_SIZE - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.name	= "fbmem",
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.name	= "hdmi_regs",
+		.start	= TEGRA_HDMI_BASE,
+		.end	= TEGRA_HDMI_BASE + TEGRA_HDMI_SIZE - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct tegra_fb_data colibri_t20_fb_data = {
+	.win		= 0,
+	.flags		= TEGRA_FB_FLIP_ON_PROBE,
+};
+
+static struct tegra_fb_data colibri_t20_hdmi_fb_data = {
+	.win		= 0,
+	.flags		= TEGRA_FB_FLIP_ON_PROBE,
+};
+
+static struct tegra_dc_out_pin colibri_t20_dc_out_pins[] = {
+	{
+		.name	= TEGRA_DC_OUT_PIN_H_SYNC,
+		.pol	= TEGRA_DC_OUT_PIN_POL_LOW,
+	},
+	{
+		.name	= TEGRA_DC_OUT_PIN_V_SYNC,
+		.pol	= TEGRA_DC_OUT_PIN_POL_LOW,
+	},
+	{
+		.name	= TEGRA_DC_OUT_PIN_PIXEL_CLOCK,
+		.pol	= TEGRA_DC_OUT_PIN_POL_LOW,
+	},
+};
+
+static struct tegra_dc_out colibri_t20_disp1_out = {
+	.type		= TEGRA_DC_OUT_RGB,
+	.parent_clk	= "pll_p",
+	.parent_clk_backup = "pll_d",
+
+	.max_pixclock	= KHZ2PICOS(162000),
+
+	.align		= TEGRA_DC_ALIGN_MSB,
+	.order		= TEGRA_DC_ORDER_RED_BLUE,
+	.depth		= 18,
+	.dither		= TEGRA_DC_ORDERED_DITHER,
+
+	/* Use 32-bit depth for android builds */
+#ifdef CONFIG_ANDROID
+	.default_mode		= "640x480-32@60",
+#else /* CONFIG_ANDROID */
+	.default_mode		= "640x480-16@60",
+#endif /* CONFIG_ANDROID */
+
+	.out_pins	= colibri_t20_dc_out_pins,
+	.n_out_pins	= ARRAY_SIZE(colibri_t20_dc_out_pins),
+
+	.enable		= colibri_t20_panel_enable,
+	.disable	= colibri_t20_panel_disable,
+};
+
+static struct tegra_dc_out colibri_t20_disp2_out = {
+	.type		= TEGRA_DC_OUT_HDMI,
+	.flags		= TEGRA_DC_OUT_HOTPLUG_HIGH,
+
+	.dcc_bus	= 1,
+	.hotplug_gpio	= colibri_t20_hdmi_hpd,
+
+	.max_pixclock	= KHZ2PICOS(148500),
+
+	/* Use 32-bit depth for android builds */
+#ifdef CONFIG_ANDROID
+	.default_mode		= "640x480-32@60",
+#else /* CONFIG_ANDROID */
+	.default_mode		= "640x480-16@60",
+#endif /* CONFIG_ANDROID */
+
+	.align		= TEGRA_DC_ALIGN_MSB,
+	.order		= TEGRA_DC_ORDER_RED_BLUE,
+
+	.enable		= colibri_t20_hdmi_enable,
+	.disable	= colibri_t20_hdmi_disable,
+
+//	.dither		= TEGRA_DC_ORDERED_DITHER,
+};
+
+static struct tegra_dc_platform_data colibri_t20_disp1_pdata = {
+	.flags		= TEGRA_DC_FLAG_ENABLED,
+	.default_out	= &colibri_t20_disp1_out,
+	.fb		= &colibri_t20_fb_data,
+};
+
+static struct tegra_dc_platform_data colibri_t20_disp2_pdata = {
+	.flags		= TEGRA_DC_FLAG_ENABLED,
+	.default_out	= &colibri_t20_disp2_out,
+	.fb		= &colibri_t20_hdmi_fb_data,
+};
+
+static struct nvhost_device colibri_t20_disp1_device = {
+	.name		= "tegradc",
+	.id		= 0,
+	.resource	= colibri_t20_disp1_resources,
+	.num_resources	= ARRAY_SIZE(colibri_t20_disp1_resources),
+	.dev = {
+		.platform_data = &colibri_t20_disp1_pdata,
+	},
+};
+
+#ifndef COLIBRI_T20_VI
+static int colibri_t20_disp1_check_fb(struct device *dev, struct fb_info *info)
+{
+	return info->device == &colibri_t20_disp1_device.dev;
+}
+#endif /* !COLIBRI_T20_VI */
+
+static struct nvhost_device colibri_t20_disp2_device = {
+	.name		= "tegradc",
+	.id		= 1,
+	.resource	= colibri_t20_disp2_resources,
+	.num_resources	= ARRAY_SIZE(colibri_t20_disp2_resources),
+	.dev = {
+		.platform_data = &colibri_t20_disp2_pdata,
+	},
+};
+#else /* CONFIG_TEGRA_DC */
+static int colibri_t20_disp1_check_fb(struct device *dev, struct fb_info *info)
+{
+	return 0;
+}
+#endif /* CONFIG_TEGRA_DC */
+
+#if defined(CONFIG_TEGRA_NVMAP)
+static struct nvmap_platform_carveout colibri_t20_carveouts[] = {
+	[0] = NVMAP_HEAP_CARVEOUT_IRAM_INIT,
+	[1] = {
+		.name		= "generic-0",
+		.usage_mask	= NVMAP_HEAP_CARVEOUT_GENERIC,
+		.buddy_size	= SZ_32K,
+	},
+};
+
+static struct nvmap_platform_data colibri_t20_nvmap_data = {
+	.carveouts	= colibri_t20_carveouts,
+	.nr_carveouts	= ARRAY_SIZE(colibri_t20_carveouts),
+};
+
+static struct platform_device colibri_t20_nvmap_device = {
+	.name	= "tegra-nvmap",
+	.id	= -1,
+	.dev	= {
+		.platform_data = &colibri_t20_nvmap_data,
+	},
+};
+#endif /* CONFIG_TEGRA_NVMAP */
+
+static struct platform_device *colibri_t20_gfx_devices[] __initdata = {
+#if defined(CONFIG_TEGRA_NVMAP)
+	&colibri_t20_nvmap_device,
+#endif
+#ifndef COLIBRI_T20_VI
+#ifndef MECS_TELLURIUM
+	&tegra_pwfm0_device,
+#else
+	&tegra_pwfm2_device,
+#endif
+	&colibri_t20_backlight_device,
+#endif /* !COLIBRI_T20_VI */
+};
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+/* put early_suspend/late_resume handlers here for the display in order
+ * to keep the code out of the display driver, keeping it closer to upstream
+ */
+struct early_suspend colibri_t20_panel_early_suspender;
+
+static void colibri_t20_panel_early_suspend(struct early_suspend *h)
+{
+	/* power down LCD, add use a black screen for HDMI */
+	if (num_registered_fb > 0)
+		fb_blank(registered_fb[0], FB_BLANK_POWERDOWN);
+	if (num_registered_fb > 1)
+		fb_blank(registered_fb[1], FB_BLANK_NORMAL);
+#ifdef CONFIG_TEGRA_CONVSERVATIVE_GOV_ON_EARLYSUPSEND
+	cpufreq_store_default_gov();
+	cpufreq_change_gov(cpufreq_conservative_gov);
+#endif
+}
+
+static void colibri_t20_panel_late_resume(struct early_suspend *h)
+{
+	unsigned i;
+#ifdef CONFIG_TEGRA_CONVSERVATIVE_GOV_ON_EARLYSUPSEND
+	cpufreq_restore_default_gov();
+#endif
+	for (i = 0; i < num_registered_fb; i++)
+		fb_blank(registered_fb[i], FB_BLANK_UNBLANK);
+}
+#endif /* CONFIG_HAS_EARLYSUSPEND */
+
+int __init colibri_t20_panel_init(void)
+{
+	int err;
+	struct resource __maybe_unused *res;
+	void __iomem *to_io;
+
+#ifdef IRIS
+	gpio_request(iris_dac_psave, "Iris DAC_PSAVE#");
+	gpio_direction_output(iris_dac_psave, 1);
+#endif /* IRIS */
+
+	/* enable hdmi hotplug gpio for hotplug detection */
+	gpio_request(colibri_t20_hdmi_hpd, "hdmi_hpd");
+	gpio_direction_input(colibri_t20_hdmi_hpd);
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+	colibri_t20_panel_early_suspender.suspend = colibri_t20_panel_early_suspend;
+	colibri_t20_panel_early_suspender.resume = colibri_t20_panel_late_resume;
+	colibri_t20_panel_early_suspender.level = EARLY_SUSPEND_LEVEL_DISABLE_FB;
+	register_early_suspend(&colibri_t20_panel_early_suspender);
+#endif /* CONFIG_HAS_EARLYSUSPEND */
+
+#if defined(CONFIG_TEGRA_NVMAP)
+	colibri_t20_carveouts[1].base = tegra_carveout_start;
+	colibri_t20_carveouts[1].size = tegra_carveout_size;
+#endif /* CONFIG_TEGRA_NVMAP */
+
+#ifdef CONFIG_TEGRA_GRHOST
+	err = tegra2_register_host1x_devices();
+	if (err)
+		return err;
+#endif /* CONFIG_TEGRA_NVMAP */
+
+	err = platform_add_devices(colibri_t20_gfx_devices,
+				   ARRAY_SIZE(colibri_t20_gfx_devices));
+
+#if defined(CONFIG_TEGRA_GRHOST) && defined(CONFIG_TEGRA_DC)
+	res = nvhost_get_resource_byname(&colibri_t20_disp1_device,
+		IORESOURCE_MEM, "fbmem");
+	res->start = tegra_fb_start;
+	res->end = tegra_fb_start + tegra_fb_size - 1;
+
+	res = nvhost_get_resource_byname(&colibri_t20_disp2_device,
+		IORESOURCE_MEM, "fbmem");
+	res->start = tegra_fb2_start;
+	res->end = tegra_fb2_start + tegra_fb2_size - 1;
+#endif /* CONFIG_TEGRA_GRHOST & CONFIG_TEGRA_DC */
+
+	/* Make sure LVDS framebuffer is cleared. */
+	to_io = ioremap(tegra_fb_start, tegra_fb_size);
+	if (to_io) {
+		memset(to_io, 0, tegra_fb_size);
+		iounmap(to_io);
+	} else pr_err("%s: Failed to map LVDS framebuffer\n", __func__);
+
+	/* Make sure HDMI framebuffer is cleared.
+	   Note: this seems to fix a tegradc.1 initialisation race in case of
+	   framebuffer console as well. */
+	to_io = ioremap(tegra_fb2_start, tegra_fb2_size);
+	if (to_io) {
+		memset(to_io, 0, tegra_fb2_size);
+		iounmap(to_io);
+	} else pr_err("%s: Failed to map HDMI framebuffer\n", __func__);
+
+#if defined(CONFIG_TEGRA_GRHOST) && defined(CONFIG_TEGRA_DC)
+	if (!err)
+		err = nvhost_device_register(&colibri_t20_disp1_device);
+
+	if (!err)
+		err = nvhost_device_register(&colibri_t20_disp2_device);
+#endif /* CONFIG_TEGRA_GRHOST & CONFIG_TEGRA_DC */
+
+	return err;
+}