/*
* arch/arm/mach-tegra/board-whistler-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/kernel.h>
#include <linux/pwm_backlight.h>
#include <linux/tegra_pwm_bl.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 whistler_hdmi_hpd TEGRA_GPIO_PN7
#ifdef CONFIG_TEGRA_DC
static struct regulator *whistler_hdmi_reg = NULL;
static struct regulator *whistler_hdmi_pll = NULL;
#endif
/*
* In case which_pwm is TEGRA_PWM_PM0,
* gpio_conf_to_sfio should be TEGRA_GPIO_PW0: set LCD_CS1_N pin to SFIO
* In case which_pwm is TEGRA_PWM_PM1,
* gpio_conf_to_sfio should be TEGRA_GPIO_PW1: set LCD_M1 pin to SFIO
*/
static struct platform_tegra_pwm_backlight_data whistler_disp1_backlight_data = {
.which_dc = 0,
.which_pwm = TEGRA_PWM_PM1,
.max_brightness = 256,
.dft_brightness = 77,
.gpio_conf_to_sfio = TEGRA_GPIO_PW1,
.switch_to_sfio = &tegra_gpio_disable,
.period = 0x1F,
.clk_div = 3,
.clk_select = 2,
};
static struct platform_device whistler_disp1_backlight_device = {
.name = "tegra-pwm-bl",
.id = -1,
.dev = {
.platform_data = &whistler_disp1_backlight_data,
},
};
#ifdef CONFIG_TEGRA_DC
static int whistler_hdmi_enable(void)
{
if (!whistler_hdmi_reg) {
whistler_hdmi_reg = regulator_get(NULL, "avdd_hdmi"); /* LD011 */
if (IS_ERR_OR_NULL(whistler_hdmi_reg)) {
pr_err("hdmi: couldn't get regulator avdd_hdmi\n");
whistler_hdmi_reg = NULL;
return PTR_ERR(whistler_hdmi_reg);
}
}
regulator_enable(whistler_hdmi_reg);
if (!whistler_hdmi_pll) {
whistler_hdmi_pll = regulator_get(NULL, "avdd_hdmi_pll"); /* LD06 */
if (IS_ERR_OR_NULL(whistler_hdmi_pll)) {
pr_err("hdmi: couldn't get regulator avdd_hdmi_pll\n");
whistler_hdmi_pll = NULL;
regulator_disable(whistler_hdmi_reg);
whistler_hdmi_reg = NULL;
return PTR_ERR(whistler_hdmi_pll);
}
}
regulator_enable(whistler_hdmi_pll);
return 0;
}
static int whistler_hdmi_disable(void)
{
regulator_disable(whistler_hdmi_reg);
regulator_disable(whistler_hdmi_pll);
return 0;
}
static struct resource whistler_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 whistler_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 whistler_panel_modes[] = {
{
.pclk = 27000000,
.h_ref_to_sync = 4,
.v_ref_to_sync = 2,
.h_sync_width = 10,
.v_sync_width = 3,
.h_back_porch = 20,
.v_back_porch = 3,
.h_active = 800,
.v_active = 480,
.h_front_porch = 70,
.v_front_porch = 3,
},
};
static struct tegra_dc_out_pin whistler_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 u8 whistler_dc_out_pin_sel_config[] = {
TEGRA_PIN_OUT_CONFIG_SEL_LM1_PM1,
};
static struct tegra_dc_out whistler_disp1_out = {
.type = TEGRA_DC_OUT_RGB,
.align = TEGRA_DC_ALIGN_MSB,
.order = TEGRA_DC_ORDER_RED_BLUE,
.height = 54, /* mm */
.width = 90, /* mm */
.modes = whistler_panel_modes,
.n_modes = ARRAY_SIZE(whistler_panel_modes),
.out_pins = whistler_dc_out_pins,
.n_out_pins = ARRAY_SIZE(whistler_dc_out_pins),
.out_sel_configs = whistler_dc_out_pin_sel_config,
.n_out_sel_configs = ARRAY_SIZE(whistler_dc_out_pin_sel_config),
};
static struct tegra_dc_out whistler_disp2_out = {
.type = TEGRA_DC_OUT_HDMI,
.flags = TEGRA_DC_OUT_HOTPLUG_HIGH,
.dcc_bus = 1,
.hotplug_gpio = whistler_hdmi_hpd,
.max_pixclock = KHZ2PICOS(148500),
.align = TEGRA_DC_ALIGN_MSB,
.order = TEGRA_DC_ORDER_RED_BLUE,
.enable = whistler_hdmi_enable,
.disable = whistler_hdmi_disable,
};
static struct tegra_fb_data whistler_fb_data = {
.win = 0,
.xres = 800,
.yres = 480,
.bits_per_pixel = 32,
.flags = TEGRA_FB_FLIP_ON_PROBE,
};
static struct tegra_fb_data whistler_hdmi_fb_data = {
.win = 0,
.xres = 800,
.yres = 480,
.bits_per_pixel = 32,
.flags = TEGRA_FB_FLIP_ON_PROBE,
};
static struct tegra_dc_platform_data whistler_disp1_pdata = {
.flags = TEGRA_DC_FLAG_ENABLED,
.default_out = &whistler_disp1_out,
.fb = &whistler_fb_data,
};
static struct nvhost_device whistler_disp1_device = {
.name = "tegradc",
.id = 0,
.resource = whistler_disp1_resources,
.num_resources = ARRAY_SIZE(whistler_disp1_resources),
.dev = {
.platform_data = &whistler_disp1_pdata,
},
};
static struct tegra_dc_platform_data whistler_disp2_pdata = {
.flags = 0,
.default_out = &whistler_disp2_out,
.fb = &whistler_hdmi_fb_data,
};
static struct nvhost_device whistler_disp2_device = {
.name = "tegradc",
.id = 1,
.resource = whistler_disp2_resources,
.num_resources = ARRAY_SIZE(whistler_disp2_resources),
.dev = {
.platform_data = &whistler_disp2_pdata,
},
};
#endif
#if defined(CONFIG_TEGRA_NVMAP)
static struct nvmap_platform_carveout whistler_carveouts[] = {
[0] = NVMAP_HEAP_CARVEOUT_IRAM_INIT,
[1] = {
.name = "generic-0",
.usage_mask = NVMAP_HEAP_CARVEOUT_GENERIC,
.base = 0x18C00000,
.size = SZ_128M - 0xC00000,
.buddy_size = SZ_32K,
},
};
static struct nvmap_platform_data whistler_nvmap_data = {
.carveouts = whistler_carveouts,
.nr_carveouts = ARRAY_SIZE(whistler_carveouts),
};
static struct platform_device whistler_nvmap_device = {
.name = "tegra-nvmap",
.id = -1,
.dev = {
.platform_data = &whistler_nvmap_data,
},
};
#endif
static struct platform_device *whistler_gfx_devices[] __initdata = {
#if defined(CONFIG_TEGRA_NVMAP)
&whistler_nvmap_device,
#endif
&whistler_disp1_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 whistler_panel_early_suspender;
static void whistler_panel_early_suspend(struct early_suspend *h)
{
/* power down LCD, add use a blank 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 whistler_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 whistler_panel_init(void)
{
int err;
struct resource __maybe_unused *res;
tegra_gpio_enable(whistler_hdmi_hpd);
gpio_request(whistler_hdmi_hpd, "hdmi_hpd");
gpio_direction_input(whistler_hdmi_hpd);
#ifdef CONFIG_HAS_EARLYSUSPEND
whistler_panel_early_suspender.suspend = whistler_panel_early_suspend;
whistler_panel_early_suspender.resume = whistler_panel_late_resume;
whistler_panel_early_suspender.level = EARLY_SUSPEND_LEVEL_DISABLE_FB;
register_early_suspend(&whistler_panel_early_suspender);
#endif
#if defined(CONFIG_TEGRA_NVMAP)
whistler_carveouts[1].base = tegra_carveout_start;
whistler_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(whistler_gfx_devices,
ARRAY_SIZE(whistler_gfx_devices));
#if defined(CONFIG_TEGRA_GRHOST) && defined(CONFIG_TEGRA_DC)
res = nvhost_get_resource_byname(&whistler_disp1_device,
IORESOURCE_MEM, "fbmem");
res->start = tegra_fb_start;
res->end = tegra_fb_start + tegra_fb_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)
res = nvhost_get_resource_byname(&whistler_disp2_device,
IORESOURCE_MEM, "fbmem");
res->start = tegra_fb2_start;
res->end = tegra_fb2_start + tegra_fb2_size - 1;
if (!err)
err = nvhost_device_register(&whistler_disp1_device);
if (!err)
err = nvhost_device_register(&whistler_disp2_device);
#endif
return err;
}
