1 files changed, 457 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/board-ventana-panel.c b/arch/arm/mach-tegra/board-ventana-panel.c
new file mode 100644
index 00000000000..4cacd3dc421
--- /dev/null
+++ b/arch/arm/mach-tegra/board-ventana-panel.c
@@ -0,0 +1,457 @@
+/*
+ * arch/arm/mach-tegra/board-ventana-panel.c
+ *
+ * Copyright (c) 2010-2012, NVIDIA Corporation.
+ *
+ * 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 <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <linux/resource.h>
+#include <asm/mach-types.h>
+#include <linux/platform_device.h>
+#include <linux/earlysuspend.h>
+#include <linux/pwm_backlight.h>
+#include <linux/nvhost.h>
+#include <mach/nvmap.h>
+#include <mach/irqs.h>
+#include <mach/iomap.h>
+#include <mach/dc.h>
+#include <mach/fb.h>
+
+#include "devices.h"
+#include "gpio-names.h"
+#include "board.h"
+
+#define ventana_bl_enb          TEGRA_GPIO_PD4
+#define ventana_lvds_shutdown   TEGRA_GPIO_PB2
+#define ventana_hdmi_hpd        TEGRA_GPIO_PN7
+#define ventana_hdmi_enb        TEGRA_GPIO_PV5
+
+/*panel power on sequence timing*/
+#define ventana_pnl_to_lvds_ms  0
+#define ventana_lvds_to_bl_ms   200
+
+static struct regulator *pnl_pwr;
+
+#ifdef CONFIG_TEGRA_DC
+static struct regulator *ventana_hdmi_reg = NULL;
+static struct regulator *ventana_hdmi_pll = NULL;
+#endif
+
+static int ventana_backlight_init(struct device *dev) {
+        int ret;
+
+        ret = gpio_request(ventana_bl_enb, "backlight_enb");
+        if (ret < 0)
+                return ret;
+
+        ret = gpio_direction_output(ventana_bl_enb, 1);
+        if (ret < 0)
+                gpio_free(ventana_bl_enb);
+        else
+                tegra_gpio_enable(ventana_bl_enb);
+
+        return ret;
+};
+
+static void ventana_backlight_exit(struct device *dev) {
+        gpio_set_value(ventana_bl_enb, 0);
+        gpio_free(ventana_bl_enb);
+        tegra_gpio_disable(ventana_bl_enb);
+}
+
+static int ventana_backlight_notify(struct device *unused, int brightness)
+{
+        gpio_set_value(ventana_bl_enb, !!brightness);
+        return brightness;
+}
+
+static int ventana_disp1_check_fb(struct device *dev, struct fb_info *info);
+
+static struct platform_pwm_backlight_data ventana_backlight_data = {
+        .pwm_id         = 2,
+        .max_brightness = 255,
+        .dft_brightness = 224,
+        .pwm_period_ns  = 5000000,
+        .init           = ventana_backlight_init,
+        .exit           = ventana_backlight_exit,
+        .notify         = ventana_backlight_notify,
+        /* Only toggle backlight on fb blank notifications for disp1 */
+        .check_fb   = ventana_disp1_check_fb,
+};
+
+static struct platform_device ventana_backlight_device = {
+        .name   = "pwm-backlight",
+        .id     = -1,
+        .dev    = {
+                .platform_data = &ventana_backlight_data,
+        },
+};
+
+#ifdef CONFIG_TEGRA_DC
+static int ventana_panel_enable(void)
+{
+        struct regulator *reg = regulator_get(NULL, "vdd_ldo4");
+
+        if (!reg) {
+                regulator_enable(reg);
+                regulator_put(reg);
+        }
+
+        if (pnl_pwr == NULL) {
+                pnl_pwr = regulator_get(NULL, "pnl_pwr");
+                if (WARN_ON(IS_ERR(pnl_pwr)))
+                        pr_err("%s: couldn't get regulator pnl_pwr: %ld\n",
+                                __func__, PTR_ERR(pnl_pwr));
+                else
+                        regulator_enable(pnl_pwr);
+        } else {
+                regulator_enable(pnl_pwr);
+        }
+
+        mdelay(ventana_pnl_to_lvds_ms);
+        gpio_set_value(ventana_lvds_shutdown, 1);
+        mdelay(ventana_lvds_to_bl_ms);
+        return 0;
+}
+
+static int ventana_panel_disable(void)
+{
+        gpio_set_value(ventana_lvds_shutdown, 0);
+        regulator_disable(pnl_pwr);
+        return 0;
+}
+
+static int ventana_hdmi_enable(void)
+{
+        if (!ventana_hdmi_reg) {
+                ventana_hdmi_reg = regulator_get(NULL, "avdd_hdmi"); /* LD07 */
+                if (IS_ERR_OR_NULL(ventana_hdmi_reg)) {
+                        pr_err("hdmi: couldn't get regulator avdd_hdmi\n");
+                        ventana_hdmi_reg = NULL;
+                        return PTR_ERR(ventana_hdmi_reg);
+                }
+        }
+        regulator_enable(ventana_hdmi_reg);
+
+        if (!ventana_hdmi_pll) {
+                ventana_hdmi_pll = regulator_get(NULL, "avdd_hdmi_pll"); /* LD08 */
+                if (IS_ERR_OR_NULL(ventana_hdmi_pll)) {
+                        pr_err("hdmi: couldn't get regulator avdd_hdmi_pll\n");
+                        ventana_hdmi_pll = NULL;
+                        regulator_disable(ventana_hdmi_reg);
+                        ventana_hdmi_reg = NULL;
+                        return PTR_ERR(ventana_hdmi_pll);
+                }
+        }
+        regulator_enable(ventana_hdmi_pll);
+        return 0;
+}
+
+static int ventana_hdmi_disable(void)
+{
+        regulator_disable(ventana_hdmi_reg);
+        regulator_disable(ventana_hdmi_pll);
+        return 0;
+}
+
+static struct resource ventana_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 ventana_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_dc_mode ventana_panel_modes[] = {
+        {
+                .pclk = 72072000,
+                .h_ref_to_sync = 11,
+                .v_ref_to_sync = 1,
+                .h_sync_width = 58,
+                .v_sync_width = 4,
+                .h_back_porch = 58,
+                .v_back_porch = 4,
+                .h_active = 1366,
+                .v_active = 768,
+                .h_front_porch = 58,
+                .v_front_porch = 4,
+        },
+};
+
+static struct tegra_fb_data ventana_fb_data = {
+        .win            = 0,
+        .xres           = 1366,
+        .yres           = 768,
+        .bits_per_pixel = 32,
+        .flags          = TEGRA_FB_FLIP_ON_PROBE,
+};
+
+static struct tegra_fb_data ventana_hdmi_fb_data = {
+        .win            = 0,
+        .xres           = 1366,
+        .yres           = 768,
+        .bits_per_pixel = 32,
+        .flags          = TEGRA_FB_FLIP_ON_PROBE,
+};
+
+static struct tegra_dc_out ventana_disp1_out = {
+        .type           = TEGRA_DC_OUT_RGB,
+
+        .align          = TEGRA_DC_ALIGN_MSB,
+        .order          = TEGRA_DC_ORDER_RED_BLUE,
+        .depth          = 18,
+        .dither         = TEGRA_DC_ORDERED_DITHER,
+
+        .modes          = ventana_panel_modes,
+        .n_modes        = ARRAY_SIZE(ventana_panel_modes),
+
+        .enable         = ventana_panel_enable,
+        .disable        = ventana_panel_disable,
+};
+
+static struct tegra_dc_out ventana_disp2_out = {
+        .type           = TEGRA_DC_OUT_HDMI,
+        .flags          = TEGRA_DC_OUT_HOTPLUG_HIGH,
+
+        .dcc_bus        = 1,
+        .hotplug_gpio   = ventana_hdmi_hpd,
+
+        .max_pixclock   = KHZ2PICOS(148500),
+
+        .align          = TEGRA_DC_ALIGN_MSB,
+        .order          = TEGRA_DC_ORDER_RED_BLUE,
+
+        .enable         = ventana_hdmi_enable,
+        .disable        = ventana_hdmi_disable,
+};
+
+static struct tegra_dc_platform_data ventana_disp1_pdata = {
+        .flags          = TEGRA_DC_FLAG_ENABLED,
+        .default_out    = &ventana_disp1_out,
+        .fb             = &ventana_fb_data,
+};
+
+static struct tegra_dc_platform_data ventana_disp2_pdata = {
+        .flags          = 0,
+        .default_out    = &ventana_disp2_out,
+        .fb             = &ventana_hdmi_fb_data,
+};
+
+static struct nvhost_device ventana_disp1_device = {
+        .name           = "tegradc",
+        .id             = 0,
+        .resource       = ventana_disp1_resources,
+        .num_resources  = ARRAY_SIZE(ventana_disp1_resources),
+        .dev = {
+                .platform_data = &ventana_disp1_pdata,
+        },
+};
+
+static int ventana_disp1_check_fb(struct device *dev, struct fb_info *info)
+{
+        return info->device == &ventana_disp1_device.dev;
+}
+
+static struct nvhost_device ventana_disp2_device = {
+        .name           = "tegradc",
+        .id             = 1,
+        .resource       = ventana_disp2_resources,
+        .num_resources  = ARRAY_SIZE(ventana_disp2_resources),
+        .dev = {
+                .platform_data = &ventana_disp2_pdata,
+        },
+};
+#else
+static int ventana_disp1_check_fb(struct device *dev, struct fb_info *info)
+{
+        return 0;
+}
+#endif
+
+#if defined(CONFIG_TEGRA_NVMAP)
+static struct nvmap_platform_carveout ventana_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 ventana_nvmap_data = {
+        .carveouts      = ventana_carveouts,
+        .nr_carveouts   = ARRAY_SIZE(ventana_carveouts),
+};
+
+static struct platform_device ventana_nvmap_device = {
+        .name   = "tegra-nvmap",
+        .id     = -1,
+        .dev    = {
+                .platform_data = &ventana_nvmap_data,
+        },
+};
+#endif
+
+static struct platform_device *ventana_gfx_devices[] __initdata = {
+#if defined(CONFIG_TEGRA_NVMAP)
+        &ventana_nvmap_device,
+#endif
+        &tegra_pwfm2_device,
+        &ventana_backlight_device,
+};
+
+#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 ventana_panel_early_suspender;
+
+static void ventana_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_save_default_governor();
+        cpufreq_set_conservative_governor();
+        cpufreq_set_conservative_governor_param("up_threshold",
+                        SET_CONSERVATIVE_GOVERNOR_UP_THRESHOLD);
+
+        cpufreq_set_conservative_governor_param("down_threshold",
+                        SET_CONSERVATIVE_GOVERNOR_DOWN_THRESHOLD);
+
+        cpufreq_set_conservative_governor_param("freq_step",
+                SET_CONSERVATIVE_GOVERNOR_FREQ_STEP);
+#endif
+}
+
+static void ventana_panel_late_resume(struct early_suspend *h)
+{
+        unsigned i;
+#ifdef CONFIG_TEGRA_CONVSERVATIVE_GOV_ON_EARLYSUPSEND
+        cpufreq_restore_default_governor();
+#endif
+        for (i = 0; i < num_registered_fb; i++)
+                fb_blank(registered_fb[i], FB_BLANK_UNBLANK);
+}
+#endif
+
+int __init ventana_panel_init(void)
+{
+        int err;
+        struct resource __maybe_unused *res;
+
+        gpio_request(ventana_lvds_shutdown, "lvds_shdn");
+        gpio_direction_output(ventana_lvds_shutdown, 1);
+        tegra_gpio_enable(ventana_lvds_shutdown);
+
+        tegra_gpio_enable(ventana_hdmi_enb);
+        gpio_request(ventana_hdmi_enb, "hdmi_5v_en");
+        gpio_direction_output(ventana_hdmi_enb, 1);
+
+        tegra_gpio_enable(ventana_hdmi_hpd);
+        gpio_request(ventana_hdmi_hpd, "hdmi_hpd");
+        gpio_direction_input(ventana_hdmi_hpd);
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+        ventana_panel_early_suspender.suspend = ventana_panel_early_suspend;
+        ventana_panel_early_suspender.resume = ventana_panel_late_resume;
+        ventana_panel_early_suspender.level = EARLY_SUSPEND_LEVEL_DISABLE_FB;
+        register_early_suspend(&ventana_panel_early_suspender);
+#endif
+
+#if defined(CONFIG_TEGRA_NVMAP)
+        ventana_carveouts[1].base = tegra_carveout_start;
+        ventana_carveouts[1].size = tegra_carveout_size;
+#endif
+
+#ifdef CONFIG_TEGRA_GRHOST
+        err = nvhost_device_register(&tegra_grhost_device);
+        if (err)
+                return err;
+#endif
+
+        err = platform_add_devices(ventana_gfx_devices,
+                                   ARRAY_SIZE(ventana_gfx_devices));
+
+#if defined(CONFIG_TEGRA_GRHOST) && defined(CONFIG_TEGRA_DC)
+        res = nvhost_get_resource_byname(&ventana_disp1_device,
+                IORESOURCE_MEM, "fbmem");
+        res->start = tegra_fb_start;
+        res->end = tegra_fb_start + tegra_fb_size - 1;
+
+        res = nvhost_get_resource_byname(&ventana_disp2_device,
+                IORESOURCE_MEM, "fbmem");
+        res->start = tegra_fb2_start;
+        res->end = tegra_fb2_start + tegra_fb2_size - 1;
+#endif
+
+        /* Copy the bootloader fb to the fb. */
+        tegra_move_framebuffer(tegra_fb_start, tegra_bootloader_fb_start,
+                min(tegra_fb_size, tegra_bootloader_fb_size));
+
+#if defined(CONFIG_TEGRA_GRHOST) && defined(CONFIG_TEGRA_DC)
+        if (!err)
+                err = nvhost_device_register(&ventana_disp1_device);
+
+        if (!err)
+                err = nvhost_device_register(&ventana_disp2_device);
+#endif
+
+        return err;
+}
+