/*
 * arch/arm/mach-tegra/board-loki-panel.c
 *
 * Copyright (c) 2011-2014, NVIDIA Corporation. All rights reserved.
 *
 * 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/ioport.h>
#include <linux/fb.h>
#include <linux/nvmap.h>
#include <linux/nvhost.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/tegra_pwm_bl.h>
#include <linux/regulator/consumer.h>
#include <linux/pwm_backlight.h>
#include <linux/dma-mapping.h>

#include <mach/irqs.h>
#include <mach/dc.h>
#include <mach/pinmux-t12.h>
#include <mach/io_dpd.h>

#include "board.h"
#include "devices.h"
#include "gpio-names.h"
#include "iomap.h"
#include "tegra12_host1x_devices.h"
#include "board-panel.h"
#include "common.h"
#include "tegra-board-id.h"

struct platform_device * __init loki_host1x_init(void)
{
	struct platform_device *pdev = NULL;

#ifdef CONFIG_TEGRA_GRHOST
	if (!of_have_populated_dt())
		pdev = tegra12_register_host1x_devices();
	else
		pdev = to_platform_device(bus_find_device_by_name(
			&platform_bus_type, NULL, "host1x"));

	if (!pdev) {
		pr_err("host1x devices registration failed\n");
		return NULL;
	}
#endif
	return pdev;
}

#ifdef CONFIG_TEGRA_DC

#define DSI_PANEL_RST_GPIO	TEGRA_GPIO_PH3
#define DSI_PANEL_BL_PWM_GPIO	TEGRA_GPIO_PH1

/* HDMI Hotplug detection pin */
#define loki_hdmi_hpd	TEGRA_GPIO_PN7

static struct regulator *loki_hdmi_reg;
static struct regulator *loki_hdmi_pll;
static struct regulator *loki_hdmi_vddio;

static struct resource loki_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 loki_panel_init() */
		.end	= 0, /* Filled in by loki_panel_init() */
		.flags	= IORESOURCE_MEM,
	},
	{
		.name	= "dsi_regs",
		.start	= TEGRA_DSI_BASE,
		.end	= TEGRA_DSI_BASE + TEGRA_DSI_SIZE - 1,
		.flags	= IORESOURCE_MEM,
	},
	{
		.name	= "mipi_cal",
		.start	= TEGRA_MIPI_CAL_BASE,
		.end	= TEGRA_MIPI_CAL_BASE + TEGRA_MIPI_CAL_SIZE - 1,
		.flags	= IORESOURCE_MEM,
	},
};

static struct resource loki_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",
		.start	= 0, /* Filled in by loki_panel_init() */
		.end	= 0, /* Filled in by loki_panel_init() */
		.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_sd_settings sd_settings;

static struct tegra_dc_out loki_disp1_out = {
	.type		= TEGRA_DC_OUT_DSI,
	.sd_settings	= &sd_settings,
};

static int loki_hdmi_enable(struct device *dev)
{
	int ret;
	if (!loki_hdmi_reg) {
		loki_hdmi_reg = regulator_get(dev, "avdd_hdmi");
		if (IS_ERR(loki_hdmi_reg)) {
			pr_err("hdmi: couldn't get regulator avdd_hdmi\n");
			loki_hdmi_reg = NULL;
			return PTR_ERR(loki_hdmi_reg);
		}
	}
	ret = regulator_enable(loki_hdmi_reg);
	if (ret < 0) {
		pr_err("hdmi: couldn't enable regulator avdd_hdmi\n");
		return ret;
	}
	if (!loki_hdmi_pll) {
		loki_hdmi_pll = regulator_get(dev, "avdd_hdmi_pll");
		if (IS_ERR(loki_hdmi_pll)) {
			pr_err("hdmi: couldn't get regulator avdd_hdmi_pll\n");
			loki_hdmi_pll = NULL;
			regulator_put(loki_hdmi_reg);
			loki_hdmi_reg = NULL;
			return PTR_ERR(loki_hdmi_pll);
		}
	}
	ret = regulator_enable(loki_hdmi_pll);
	if (ret < 0) {
		pr_err("hdmi: couldn't enable regulator avdd_hdmi_pll\n");
		return ret;
	}
	return 0;
}

static int loki_hdmi_disable(void)
{
	if (loki_hdmi_reg) {
		regulator_disable(loki_hdmi_reg);
		regulator_put(loki_hdmi_reg);
		loki_hdmi_reg = NULL;
	}

	if (loki_hdmi_pll) {
		regulator_disable(loki_hdmi_pll);
		regulator_put(loki_hdmi_pll);
		loki_hdmi_pll = NULL;
	}

	return 0;
}

static int loki_hdmi_postsuspend(void)
{
	if (loki_hdmi_vddio) {
		regulator_disable(loki_hdmi_vddio);
		regulator_put(loki_hdmi_vddio);
		loki_hdmi_vddio = NULL;
	}
	return 0;
}

static int loki_hdmi_hotplug_init(struct device *dev)
{
	if (!loki_hdmi_vddio) {
		loki_hdmi_vddio = regulator_get(dev, "vdd_hdmi_5v0");
		if (WARN_ON(IS_ERR(loki_hdmi_vddio))) {
			pr_err("%s: couldn't get regulator vdd_hdmi_5v0: %ld\n",
					__func__, PTR_ERR(loki_hdmi_vddio));
			loki_hdmi_vddio = NULL;
		} else
			return regulator_enable(loki_hdmi_vddio);
	}
	return 0;
}

/* Table of electrical characteristics for Roth HDMI.
 * All modes must be declared here
 */
struct tmds_config loki_tmds_config[] = {
	{ /* 720p / 74.25MHz modes */
		.pclk = 74250000,
		.pll0 = 0x01003110,
		.pll1 = 0x00301500,
		.pe_current = 0x00000000,
		.drive_current = 0x32323232,
		.peak_current = 0x05050505,
	},
	{ /* 1080p / 148.5MHz modes */
		.pclk = 148500000,
		.pll0 = 0x01003310,
		.pll1 = 0x00301500,
		.pe_current = 0x00000000,
		.drive_current = 0x32323232,
		.peak_current = 0x05050505,
	},
	{ /* 297MHz modes */
		.pclk = INT_MAX,
		.pll0 = 0x01003f10,
		.pll1 = 0x00300f00,
		.pe_current = 0x00000000,
		.drive_current = 0x36363636,
		.peak_current = 0x07070707,
	},
};

struct tegra_hdmi_out loki_hdmi_out = {
	.tmds_config = loki_tmds_config,
	.n_tmds_config = 3,
};

static void loki_hdmi_hotplug_report(bool state)
{
	if (state) {
		tegra_pinmux_set_pullupdown(TEGRA_PINGROUP_DDC_SDA,
						TEGRA_PUPD_PULL_DOWN);
		tegra_pinmux_set_pullupdown(TEGRA_PINGROUP_DDC_SCL,
						TEGRA_PUPD_PULL_DOWN);
	} else {
		tegra_pinmux_set_pullupdown(TEGRA_PINGROUP_DDC_SDA,
						TEGRA_PUPD_NORMAL);
		tegra_pinmux_set_pullupdown(TEGRA_PINGROUP_DDC_SCL,
						TEGRA_PUPD_NORMAL);
	}
}

static struct tegra_dc_out loki_disp2_out = {
	.type		= TEGRA_DC_OUT_HDMI,
	.flags		= TEGRA_DC_OUT_HOTPLUG_HIGH,
	.parent_clk	= "pll_d2",

	.ddc_bus	= 3,
	.hotplug_gpio	= loki_hdmi_hpd,

	.max_pixclock	= KHZ2PICOS(297000),

	.align		= TEGRA_DC_ALIGN_MSB,
	.order		= TEGRA_DC_ORDER_RED_BLUE,

	.enable		= loki_hdmi_enable,
	.disable	= loki_hdmi_disable,
	.postsuspend	= loki_hdmi_postsuspend,
	.hotplug_init	= loki_hdmi_hotplug_init,
	.hotplug_report = loki_hdmi_hotplug_report,
};

static struct tegra_fb_data loki_disp1_fb_data = {
	.win		= 0,
	.bits_per_pixel = 32,
	.flags		= TEGRA_FB_FLIP_ON_PROBE,
};

static struct tegra_dc_platform_data loki_disp1_pdata = {
	.flags		= TEGRA_DC_FLAG_ENABLED,
	.default_out	= &loki_disp1_out,
	.fb		= &loki_disp1_fb_data,
	.emc_clk_rate	= 204000000,
#ifdef CONFIG_TEGRA_DC_CMU
	.cmu_enable	= 1,
#endif
};

static struct tegra_fb_data loki_disp2_fb_data = {
	.win		= 0,
	.xres		= 1024,
	.yres		= 600,
	.bits_per_pixel = 32,
	.flags		= TEGRA_FB_FLIP_ON_PROBE,
};

static struct tegra_dc_platform_data loki_disp2_pdata = {
	.flags		= TEGRA_DC_FLAG_ENABLED,
	.default_out	= &loki_disp2_out,
	.fb		= &loki_disp2_fb_data,
	.emc_clk_rate	= 300000000,
#ifdef CONFIG_TEGRA_DC_CMU
	.cmu_enable	= 1,
#endif
};

static struct platform_device loki_disp2_device = {
	.name		= "tegradc",
	.id		= 1,
	.resource	= loki_disp2_resources,
	.num_resources	= ARRAY_SIZE(loki_disp2_resources),
	.dev = {
		.platform_data = &loki_disp2_pdata,
	},
};

static struct platform_device loki_disp1_device = {
	.name		= "tegradc",
	.id		= 0,
	.resource	= loki_disp1_resources,
	.num_resources	= ARRAY_SIZE(loki_disp1_resources),
	.dev = {
		.platform_data = &loki_disp1_pdata,
	},
};

static struct nvmap_platform_carveout loki_carveouts[] = {
	[0] = {
		.name		= "iram",
		.usage_mask	= NVMAP_HEAP_CARVEOUT_IRAM,
		.base		= TEGRA_IRAM_BASE + TEGRA_RESET_HANDLER_SIZE,
		.size		= TEGRA_IRAM_SIZE - TEGRA_RESET_HANDLER_SIZE,
		.dma_dev	= &tegra_iram_dev,
	},
	[1] = {
		.name		= "generic-0",
		.usage_mask	= NVMAP_HEAP_CARVEOUT_GENERIC,
		.base		= 0, /* Filled in by loki_panel_init() */
		.size		= 0, /* Filled in by loki_panel_init() */
		.dma_dev	= &tegra_generic_dev,
	},
	[2] = {
		.name		= "vpr",
		.usage_mask	= NVMAP_HEAP_CARVEOUT_VPR,
		.base		= 0, /* Filled in by loki_panel_init() */
		.size		= 0, /* Filled in by loki_panel_init() */
		.dma_dev	= &tegra_vpr_dev,
	},
};

static struct nvmap_platform_data loki_nvmap_data = {
	.carveouts	= loki_carveouts,
	.nr_carveouts	= ARRAY_SIZE(loki_carveouts),
};

static struct platform_device loki_nvmap_device = {
	.name	= "tegra-nvmap",
	.id	= -1,
	.dev	= {
		.platform_data = &loki_nvmap_data,
	},
};
static struct tegra_io_dpd dsic_io = {
	.name			= "DSIC",
	.io_dpd_reg_index	= 1,
	.io_dpd_bit		= 8,
};
static struct tegra_io_dpd dsid_io = {
	.name			= "DSID",
	.io_dpd_reg_index	= 1,
	.io_dpd_bit		= 9,
};
static struct tegra_dc_mode hdmi_panel_modes[] = {
	{
		.pclk = 148500000,
		.h_ref_to_sync = 1,
		.v_ref_to_sync = 1,
		.h_sync_width = 44,
		.v_sync_width = 5,
		.h_back_porch = 148,
		.v_back_porch = 36,
		.h_active = 1920,
		.v_active = 1080,
		.h_front_porch = 88,
		.v_front_porch = 4,
	},
};

static void loki_panel_select(void)
{
	struct tegra_panel *panel;
	struct board_info board;
	u8 dsi_instance = DSI_INSTANCE_0;

	tegra_get_display_board_info(&board);

	switch (board.fab) {
	case 0x2:
		panel = &dsi_j_720p_5;
		break;
	case 0x1:
		panel = &dsi_j_1440_810_5_8;
		break;
	case 0x0:
	default:
		panel = &dsi_l_720p_5_loki;
		break;
	}

	tegra_io_dpd_enable(&dsic_io);
	tegra_io_dpd_enable(&dsid_io);

	if (panel) {
		if (panel->init_sd_settings)
			panel->init_sd_settings(&sd_settings);

		if (panel->init_dc_out) {
			panel->init_dc_out(&loki_disp1_out);
			loki_disp1_out.dsi->dsi_instance = dsi_instance;
			loki_disp1_out.dsi->dsi_panel_rst_gpio =
				DSI_PANEL_RST_GPIO;
			loki_disp1_out.dsi->dsi_panel_bl_pwm_gpio =
				DSI_PANEL_BL_PWM_GPIO;
			tegra_dsi_update_init_cmd_gpio_rst(&loki_disp1_out);
		}

		if (panel->init_fb_data)
			panel->init_fb_data(&loki_disp1_fb_data);

		if (panel->init_cmu_data)
			panel->init_cmu_data(&loki_disp1_pdata);

		if (panel->set_disp_device)
			panel->set_disp_device(&loki_disp1_device);

		if (panel->register_bl_dev)
			panel->register_bl_dev();
	}
}

int __init loki_panel_init(int board_id)
{
	int err = 0;
	struct resource __maybe_unused *res;
	struct platform_device *phost1x = NULL;
	struct board_info bi;
#ifdef CONFIG_NVMAP_USE_CMA_FOR_CARVEOUT
	struct dma_declare_info vpr_dma_info;
	struct dma_declare_info generic_dma_info;
#endif

	tegra_get_board_info(&bi);
	if ((bi.sku == BOARD_SKU_FOSTER) && (bi.board_id == BOARD_P2530)) {
		res = platform_get_resource_byname(&loki_disp2_device,
					 IORESOURCE_IRQ, "irq");
		res->start = INT_DISPLAY_GENERAL;
		res->end = INT_DISPLAY_GENERAL;
		res = platform_get_resource_byname(&loki_disp2_device,
					 IORESOURCE_MEM, "regs");
		res->start = TEGRA_DISPLAY_BASE;
		res->end = TEGRA_DISPLAY_BASE + TEGRA_DISPLAY_SIZE - 1;
		loki_disp2_fb_data.xres = 1920;
		loki_disp2_fb_data.yres = 1080;
		loki_disp2_device.id = 0;
		loki_disp2_out.parent_clk = "pll_d";

		loki_disp2_out.modes = hdmi_panel_modes;
		loki_disp2_out.n_modes = ARRAY_SIZE(hdmi_panel_modes);
	} else
		loki_panel_select();

#ifdef CONFIG_TEGRA_NVMAP
	loki_carveouts[1].base = tegra_carveout_start;
	loki_carveouts[1].size = tegra_carveout_size;

	loki_carveouts[2].base = tegra_vpr_start;
	loki_carveouts[2].size = tegra_vpr_size;

#ifdef CONFIG_NVMAP_USE_CMA_FOR_CARVEOUT
	generic_dma_info.name = "generic";
	generic_dma_info.base = tegra_carveout_start;
	generic_dma_info.size = tegra_carveout_size;
	generic_dma_info.resize = false;
	generic_dma_info.cma_dev = NULL;

	vpr_dma_info.name = "vpr";
	vpr_dma_info.base = tegra_vpr_start;
	vpr_dma_info.size = tegra_vpr_size;
	vpr_dma_info.resize = false;
	vpr_dma_info.cma_dev = NULL;
	loki_carveouts[1].cma_dev = &tegra_generic_cma_dev;
	loki_carveouts[1].resize = false;
	loki_carveouts[2].cma_dev = &tegra_vpr_cma_dev;
	loki_carveouts[2].resize = true;

	vpr_dma_info.size = SZ_32M;
	vpr_dma_info.resize = true;
	vpr_dma_info.cma_dev = &tegra_vpr_cma_dev;
	vpr_dma_info.notifier.ops = &vpr_dev_ops;

	if (tegra_carveout_size) {
		err = dma_declare_coherent_resizable_cma_memory(
				&tegra_generic_dev, &generic_dma_info);
		if (err) {
			pr_err("Generic coherent memory declaration failed\n");
			return err;
		}
	}
	if (tegra_vpr_size) {
		err = dma_declare_coherent_resizable_cma_memory(
				&tegra_vpr_dev, &vpr_dma_info);
		if (err) {
			pr_err("VPR coherent memory declaration failed\n");
			return err;
		}
	}
#endif

	err = platform_device_register(&loki_nvmap_device);
	if (err) {
		pr_err("nvmap device registration failed\n");
		return err;
	}
#endif

	phost1x = loki_host1x_init();
	if (!phost1x) {
		pr_err("host1x devices registration failed\n");
		return -EINVAL;
	}

	res = platform_get_resource_byname(&loki_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. */
	if (tegra_bootloader_fb_size)
		__tegra_move_framebuffer(&loki_nvmap_device,
			tegra_fb_start, tegra_bootloader_fb_start,
			min(tegra_fb_size, tegra_bootloader_fb_size));
	else
		__tegra_clear_framebuffer(&loki_nvmap_device,
				tegra_fb_start, tegra_fb_size);

	/* Copy the bootloader fb2 to the fb2. */
	if (tegra_bootloader_fb2_size)
		__tegra_move_framebuffer(&loki_nvmap_device,
			tegra_fb2_start, tegra_bootloader_fb2_start,
			min(tegra_fb2_size, tegra_bootloader_fb2_size));
	else
		__tegra_clear_framebuffer(&loki_nvmap_device,
				tegra_fb2_start, tegra_fb2_size);

	res = platform_get_resource_byname(&loki_disp2_device,
					 IORESOURCE_MEM, "fbmem");
	res->start = tegra_fb2_start;
	res->end = tegra_fb2_start + tegra_fb2_size - 1;

	loki_disp1_device.dev.parent = &phost1x->dev;

	if ((bi.sku != BOARD_SKU_FOSTER) || (bi.board_id != BOARD_P2530)) {
		err = platform_device_register(&loki_disp1_device);
		if (err) {
			pr_err("disp1 device registration failed\n");
			return err;
		}
	}

	loki_disp2_device.dev.parent = &phost1x->dev;
	loki_disp2_out.hdmi_out = &loki_hdmi_out;
	err = platform_device_register(&loki_disp2_device);
	if (err) {
		pr_err("disp2 device registration failed\n");
		return err;
	}

	return err;
}
#else
int __init loki_panel_init(void)
{
	if (loki_host1x_init())
		return 0;
	else
		return -EINVAL;
}
#endif