/*
* 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;
}
