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/*
* arch/arm/mach-tegra/board-harmony-panel.c
*
* Copyright (c) 2010, 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/pwm_backlight.h>
#include <mach/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"
#define harmony_bl_enb TEGRA_GPIO_PB5
#define harmony_lvds_shutdown TEGRA_GPIO_PB2
#define harmony_en_vdd_pnl TEGRA_GPIO_PC6
#define harmony_bl_vdd TEGRA_GPIO_PW0
#define harmony_bl_pwm TEGRA_GPIO_PB4
static int harmony_backlight_init(struct device *dev)
{
int ret;
ret = gpio_request(harmony_bl_enb, "backlight_enb");
if (ret < 0)
return ret;
ret = gpio_direction_output(harmony_bl_enb, 1);
if (ret < 0)
gpio_free(harmony_bl_enb);
else
tegra_gpio_enable(harmony_bl_enb);
return ret;
};
static void harmony_backlight_exit(struct device *dev)
{
gpio_set_value(harmony_bl_enb, 0);
gpio_free(harmony_bl_enb);
tegra_gpio_disable(harmony_bl_enb);
}
static int harmony_backlight_notify(struct device *unused, int brightness)
{
gpio_set_value(harmony_en_vdd_pnl, !!brightness);
gpio_set_value(harmony_lvds_shutdown, !!brightness);
gpio_set_value(harmony_bl_enb, !!brightness);
return brightness;
}
static struct platform_pwm_backlight_data harmony_backlight_data = {
.pwm_id = 0,
.max_brightness = 255,
.dft_brightness = 224,
.pwm_period_ns = 5000000,
.init = harmony_backlight_init,
.exit = harmony_backlight_exit,
.notify = harmony_backlight_notify,
};
static struct platform_device harmony_backlight_device = {
.name = "pwm-backlight",
.id = -1,
.dev = {
.platform_data = &harmony_backlight_data,
},
};
static int harmony_panel_enable(void)
{
gpio_set_value(harmony_lvds_shutdown, 1);
return 0;
}
static int harmony_panel_disable(void)
{
gpio_set_value(harmony_lvds_shutdown, 0);
return 0;
}
static struct resource harmony_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",
.start = 0x1c012000,
.end = 0x1c012000 + 0x258000 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct tegra_dc_mode harmony_panel_modes[] = {
{
.pclk = 42430000,
.h_ref_to_sync = 4,
.v_ref_to_sync = 2,
.h_sync_width = 136,
.v_sync_width = 4,
.h_back_porch = 138,
.v_back_porch = 21,
.h_active = 1024,
.v_active = 600,
.h_front_porch = 34,
.v_front_porch = 4,
},
};
static struct tegra_fb_data harmony_fb_data = {
.win = 0,
.xres = 1024,
.yres = 600,
.bits_per_pixel = 16,
};
static struct tegra_dc_out harmony_disp1_out = {
.type = TEGRA_DC_OUT_RGB,
.align = TEGRA_DC_ALIGN_MSB,
.order = TEGRA_DC_ORDER_RED_BLUE,
.modes = harmony_panel_modes,
.n_modes = ARRAY_SIZE(harmony_panel_modes),
.enable = harmony_panel_enable,
.disable = harmony_panel_disable,
};
static struct tegra_dc_platform_data harmony_disp1_pdata = {
.flags = TEGRA_DC_FLAG_ENABLED,
.default_out = &harmony_disp1_out,
.fb = &harmony_fb_data,
};
static struct nvhost_device harmony_disp1_device = {
.name = "tegradc",
.id = 0,
.resource = harmony_disp1_resources,
.num_resources = ARRAY_SIZE(harmony_disp1_resources),
.dev = {
.platform_data = &harmony_disp1_pdata,
},
};
static struct nvmap_platform_carveout harmony_carveouts[] = {
[0] = {
.name = "iram",
.usage_mask = NVMAP_HEAP_CARVEOUT_IRAM,
.base = TEGRA_IRAM_BASE,
.size = TEGRA_IRAM_SIZE,
.buddy_size = 0, /* no buddy allocation for IRAM */
},
[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 harmony_nvmap_data = {
.carveouts = harmony_carveouts,
.nr_carveouts = ARRAY_SIZE(harmony_carveouts),
};
static struct platform_device harmony_nvmap_device = {
.name = "tegra-nvmap",
.id = -1,
.dev = {
.platform_data = &harmony_nvmap_data,
},
};
static struct platform_device *harmony_gfx_devices[] __initdata = {
&harmony_nvmap_device,
&tegra_grhost_device,
&tegra_pwfm0_device,
&harmony_backlight_device,
};
int __init harmony_panel_init(void)
{
int err;
gpio_request(harmony_en_vdd_pnl, "en_vdd_pnl");
gpio_direction_output(harmony_en_vdd_pnl, 1);
tegra_gpio_enable(harmony_en_vdd_pnl);
gpio_request(harmony_bl_vdd, "bl_vdd");
gpio_direction_output(harmony_bl_vdd, 1);
tegra_gpio_enable(harmony_bl_vdd);
gpio_request(harmony_lvds_shutdown, "lvds_shdn");
gpio_direction_output(harmony_lvds_shutdown, 1);
tegra_gpio_enable(harmony_lvds_shutdown);
err = platform_add_devices(harmony_gfx_devices,
ARRAY_SIZE(harmony_gfx_devices));
if (!err)
err = nvhost_device_register(&harmony_disp1_device);
return err;
}
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