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/*
* arch/arm/mach-tegra/board-aruba-panel.c
*
* Copyright (c) 2010-2011, 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 <linux/nvhost.h>
#include <mach/nvmap.h>
#include <mach/irqs.h>
#include <mach/iomap.h>
#include <mach/dc.h>
#include <mach/fb.h>
#include "board.h"
#include "devices.h"
#include "gpio-names.h"
#define aruba_lvds_shutdown TEGRA_GPIO_PB2
#define aruba_bl_enb TEGRA_GPIO_PW1
static int aruba_backlight_init(struct device *dev) {
int ret;
ret = gpio_request(aruba_bl_enb, "backlight_enb");
if (ret < 0)
return ret;
ret = gpio_direction_output(aruba_bl_enb, 1);
if (ret < 0)
gpio_free(aruba_bl_enb);
else
tegra_gpio_enable(aruba_bl_enb);
return ret;
};
static void aruba_backlight_exit(struct device *dev) {
gpio_set_value(aruba_bl_enb, 0);
gpio_free(aruba_bl_enb);
tegra_gpio_disable(aruba_bl_enb);
}
static int aruba_backlight_notify(struct device *unused, int brightness)
{
gpio_set_value(aruba_bl_enb, !!brightness);
return brightness;
}
static struct platform_pwm_backlight_data aruba_backlight_data = {
.pwm_id = 2,
.max_brightness = 255,
.dft_brightness = 224,
.pwm_period_ns = 5000000,
.init = aruba_backlight_init,
.exit = aruba_backlight_exit,
.notify = aruba_backlight_notify,
};
static struct platform_device aruba_backlight_device = {
.name = "pwm-backlight",
.id = -1,
.dev = {
.platform_data = &aruba_backlight_data,
},
};
static int aruba_panel_enable(void)
{
static struct regulator *reg = NULL;
if (reg == NULL) {
reg = regulator_get(NULL, "avdd_lvds");
if (WARN_ON(IS_ERR(reg)))
pr_err("%s: couldn't get regulator avdd_lvds: %ld\n",
__func__, PTR_ERR(reg));
else
regulator_enable(reg);
}
gpio_set_value(aruba_lvds_shutdown, 1);
return 0;
}
static int aruba_panel_disable(void)
{
gpio_set_value(aruba_lvds_shutdown, 0);
return 0;
}
static struct resource aruba_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 = 0, /* Filled in by aruba_panel_init() */
.end = 0, /* Filled in by aruba_panel_init() */
.flags = IORESOURCE_MEM,
},
};
static struct tegra_dc_mode aruba_panel_modes[] = {
{
.pclk = 18000000,
.h_ref_to_sync = 8,
.v_ref_to_sync = 2,
.h_sync_width = 4,
.v_sync_width = 1,
.h_back_porch = 20,
.v_back_porch = 7,
.h_active = 480,
.v_active = 640,
.h_front_porch = 8,
.v_front_porch = 8,
},
};
static struct tegra_fb_data aruba_fb_data = {
.win = 0,
.xres = 480,
.yres = 640,
.bits_per_pixel = 16,
};
static struct tegra_dc_out aruba_disp1_out = {
.type = TEGRA_DC_OUT_RGB,
.align = TEGRA_DC_ALIGN_MSB,
.order = TEGRA_DC_ORDER_RED_BLUE,
.modes = aruba_panel_modes,
.n_modes = ARRAY_SIZE(aruba_panel_modes),
.enable = aruba_panel_enable,
.disable = aruba_panel_disable,
};
static struct tegra_dc_platform_data aruba_disp1_pdata = {
.flags = TEGRA_DC_FLAG_ENABLED,
.default_out = &aruba_disp1_out,
.fb = &aruba_fb_data,
};
static struct nvhost_device aruba_disp1_device = {
.name = "tegradc",
.id = 0,
.resource = aruba_disp1_resources,
.num_resources = ARRAY_SIZE(aruba_disp1_resources),
.dev = {
.platform_data = &aruba_disp1_pdata,
},
};
static struct nvmap_platform_carveout aruba_carveouts[] = {
[0] = NVMAP_HEAP_CARVEOUT_IRAM_INIT,
[1] = {
.name = "generic-0",
.usage_mask = NVMAP_HEAP_CARVEOUT_GENERIC,
.base = 0, /* Filled in by aruba_panel_init() */
.size = 0, /* Filled in by aruba_panel_init() */
.buddy_size = SZ_32K,
},
};
static struct nvmap_platform_data aruba_nvmap_data = {
.carveouts = aruba_carveouts,
.nr_carveouts = ARRAY_SIZE(aruba_carveouts),
};
static struct platform_device aruba_nvmap_device = {
.name = "tegra-nvmap",
.id = -1,
.dev = {
.platform_data = &aruba_nvmap_data,
},
};
static struct platform_device *aruba_gfx_devices[] __initdata = {
&aruba_nvmap_device,
&tegra_grhost_device,
&tegra_pwfm2_device,
&aruba_backlight_device,
};
int __init aruba_panel_init(void)
{
int err;
struct resource *res;
aruba_carveouts[1].base = tegra_carveout_start;
aruba_carveouts[1].size = tegra_carveout_size;
err = platform_add_devices(aruba_gfx_devices,
ARRAY_SIZE(aruba_gfx_devices));
res = nvhost_get_resource_byname(&aruba_disp1_device,
IORESOURCE_MEM, "fbmem");
res->start = tegra_fb_start;
res->end = tegra_fb_start + tegra_fb_size - 1;
/* 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 (!err)
err = nvhost_device_register(&aruba_disp1_device);
return err;
}
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