/*
* arch/arm/mach-tegra/board-kai-panel.c
*
* Copyright (c) 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 version 2 as
* published by the Free Software Foundation.
*
* 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 <asm/atomic.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 "board-kai.h"
#include "devices.h"
#include "gpio-names.h"
/* kai default display board pins */
#define kai_lvds_avdd_en TEGRA_GPIO_PH6
#define kai_lvds_stdby TEGRA_GPIO_PG5
#define kai_lvds_rst TEGRA_GPIO_PG7
#define kai_lvds_shutdown TEGRA_GPIO_PN6
#define kai_lvds_rs TEGRA_GPIO_PV6
#define kai_lvds_lr TEGRA_GPIO_PG1
/* kai A00 display board pins */
#define kai_lvds_rs_a00 TEGRA_GPIO_PH1
/* common pins( backlight ) for all display boards */
#define kai_bl_enb TEGRA_GPIO_PH3
#define kai_bl_pwm TEGRA_GPIO_PH0
#define kai_hdmi_hpd TEGRA_GPIO_PN7
#ifdef CONFIG_TEGRA_DC
static struct regulator *kai_hdmi_reg;
static struct regulator *kai_hdmi_pll;
static struct regulator *kai_hdmi_vddio;
#endif
static atomic_t sd_brightness = ATOMIC_INIT(255);
static struct regulator *kai_lvds_reg;
static struct regulator *kai_lvds_vdd_panel;
static tegra_dc_bl_output kai_bl_output_measured = {
0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 49, 50, 51, 52, 53, 54,
55, 56, 57, 58, 59, 60, 61, 62,
63, 64, 65, 66, 67, 68, 69, 70,
70, 72, 73, 74, 75, 76, 77, 78,
79, 80, 81, 82, 83, 84, 85, 86,
87, 88, 89, 90, 91, 92, 93, 94,
95, 96, 97, 98, 99, 100, 101, 102,
103, 104, 105, 106, 107, 108, 110, 111,
112, 113, 114, 115, 116, 117, 118, 119,
120, 121, 122, 123, 124, 124, 125, 126,
127, 128, 129, 130, 131, 132, 133, 133,
134, 135, 136, 137, 138, 139, 140, 141,
142, 143, 144, 145, 146, 147, 148, 148,
149, 150, 151, 152, 153, 154, 155, 156,
157, 158, 159, 160, 161, 162, 163, 164,
165, 166, 167, 168, 169, 170, 171, 172,
173, 174, 175, 176, 177, 179, 180, 181,
182, 184, 185, 186, 187, 188, 189, 190,
191, 192, 193, 194, 195, 196, 197, 198,
199, 200, 201, 202, 203, 204, 205, 206,
207, 208, 209, 211, 212, 213, 214, 215,
216, 217, 218, 219, 220, 221, 222, 223,
224, 225, 226, 227, 228, 229, 230, 231,
232, 233, 234, 235, 236, 237, 238, 239,
240, 241, 242, 243, 244, 245, 246, 247,
248, 249, 250, 251, 252, 253, 254, 255
};
static p_tegra_dc_bl_output bl_output;
static int kai_backlight_init(struct device *dev)
{
int ret;
bl_output = kai_bl_output_measured;
if (WARN_ON(ARRAY_SIZE(kai_bl_output_measured) != 256))
pr_err("bl_output array does not have 256 elements\n");
tegra_gpio_disable(kai_bl_pwm);
ret = gpio_request(kai_bl_enb, "backlight_enb");
if (ret < 0)
return ret;
ret = gpio_direction_output(kai_bl_enb, 1);
if (ret < 0)
gpio_free(kai_bl_enb);
else
tegra_gpio_enable(kai_bl_enb);
return ret;
};
static void kai_backlight_exit(struct device *dev)
{
/* int ret; */
/*ret = gpio_request(kai_bl_enb, "backlight_enb");*/
gpio_set_value(kai_bl_enb, 0);
gpio_free(kai_bl_enb);
tegra_gpio_disable(kai_bl_enb);
return;
}
static int kai_backlight_notify(struct device *unused, int brightness)
{
int cur_sd_brightness = atomic_read(&sd_brightness);
/* Set the backlight GPIO pin mode to 'backlight_enable' */
gpio_set_value(kai_bl_enb, !!brightness);
/* SD brightness is a percentage, 8-bit value. */
brightness = (brightness * cur_sd_brightness) / 255;
/* Apply any backlight response curve */
if (brightness > 255)
pr_info("Error: Brightness > 255!\n");
else
brightness = bl_output[brightness];
return brightness;
}
static int kai_disp1_check_fb(struct device *dev, struct fb_info *info);
static struct platform_pwm_backlight_data kai_backlight_data = {
.pwm_id = 0,
.max_brightness = 255,
.dft_brightness = 224,
.pwm_period_ns = 100000,
.init = kai_backlight_init,
.exit = kai_backlight_exit,
.notify = kai_backlight_notify,
/* Only toggle backlight on fb blank notifications for disp1 */
.check_fb = kai_disp1_check_fb,
};
static struct platform_device kai_backlight_device = {
.name = "pwm-backlight",
.id = -1,
.dev = {
.platform_data = &kai_backlight_data,
},
};
static int kai_panel_enable(void)
{
if (kai_lvds_reg == NULL) {
kai_lvds_reg = regulator_get(NULL, "vdd_lvds");
if (WARN_ON(IS_ERR(kai_lvds_reg)))
pr_err("%s: couldn't get regulator vdd_lvds: %ld\n",
__func__, PTR_ERR(kai_lvds_reg));
else
regulator_enable(kai_lvds_reg);
}
if (kai_lvds_vdd_panel == NULL) {
kai_lvds_vdd_panel = regulator_get(NULL, "vdd_lcd_panel");
if (WARN_ON(IS_ERR(kai_lvds_vdd_panel)))
pr_err("%s: couldn't get regulator vdd_lcd_panel: %ld\n",
__func__, PTR_ERR(kai_lvds_vdd_panel));
else
regulator_enable(kai_lvds_vdd_panel);
}
mdelay(5);
gpio_set_value(kai_lvds_avdd_en, 1);
mdelay(5);
gpio_set_value(kai_lvds_stdby, 1);
gpio_set_value(kai_lvds_rst, 1);
gpio_set_value(kai_lvds_shutdown, 1);
gpio_set_value(kai_lvds_lr, 1);
mdelay(10);
return 0;
}
static int kai_panel_disable(void)
{
gpio_set_value(kai_lvds_lr, 0);
gpio_set_value(kai_lvds_shutdown, 0);
gpio_set_value(kai_lvds_rst, 0);
gpio_set_value(kai_lvds_stdby, 0);
mdelay(5);
gpio_set_value(kai_lvds_avdd_en, 0);
mdelay(5);
regulator_disable(kai_lvds_reg);
regulator_put(kai_lvds_reg);
kai_lvds_reg = NULL;
regulator_disable(kai_lvds_vdd_panel);
regulator_put(kai_lvds_vdd_panel);
kai_lvds_vdd_panel = NULL;
return 0;
}
#ifdef CONFIG_TEGRA_DC
static int kai_hdmi_vddio_enable(void)
{
int ret;
if (!kai_hdmi_vddio) {
kai_hdmi_vddio = regulator_get(NULL, "vdd_hdmi_con");
if (IS_ERR_OR_NULL(kai_hdmi_vddio)) {
ret = PTR_ERR(kai_hdmi_vddio);
pr_err("hdmi: couldn't get regulator vdd_hdmi_con\n");
kai_hdmi_vddio = NULL;
return ret;
}
}
ret = regulator_enable(kai_hdmi_vddio);
if (ret < 0) {
pr_err("hdmi: couldn't enable regulator vdd_hdmi_con\n");
regulator_put(kai_hdmi_vddio);
kai_hdmi_vddio = NULL;
return ret;
}
return ret;
}
static int kai_hdmi_vddio_disable(void)
{
if (kai_hdmi_vddio) {
regulator_disable(kai_hdmi_vddio);
regulator_put(kai_hdmi_vddio);
kai_hdmi_vddio = NULL;
}
return 0;
}
static int kai_hdmi_enable(void)
{
int ret;
if (!kai_hdmi_reg) {
kai_hdmi_reg = regulator_get(NULL, "avdd_hdmi");
if (IS_ERR_OR_NULL(kai_hdmi_reg)) {
pr_err("hdmi: couldn't get regulator avdd_hdmi\n");
kai_hdmi_reg = NULL;
return PTR_ERR(kai_hdmi_reg);
}
}
ret = regulator_enable(kai_hdmi_reg);
if (ret < 0) {
pr_err("hdmi: couldn't enable regulator avdd_hdmi\n");
return ret;
}
if (!kai_hdmi_pll) {
kai_hdmi_pll = regulator_get(NULL, "avdd_hdmi_pll");
if (IS_ERR_OR_NULL(kai_hdmi_pll)) {
pr_err("hdmi: couldn't get regulator avdd_hdmi_pll\n");
kai_hdmi_pll = NULL;
regulator_put(kai_hdmi_reg);
kai_hdmi_reg = NULL;
return PTR_ERR(kai_hdmi_pll);
}
}
ret = regulator_enable(kai_hdmi_pll);
if (ret < 0) {
pr_err("hdmi: couldn't enable regulator avdd_hdmi_pll\n");
return ret;
}
return 0;
}
static int kai_hdmi_disable(void)
{
regulator_disable(kai_hdmi_reg);
regulator_put(kai_hdmi_reg);
kai_hdmi_reg = NULL;
regulator_disable(kai_hdmi_pll);
regulator_put(kai_hdmi_pll);
kai_hdmi_pll = NULL;
return 0;
}
static struct resource kai_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 kai_panel_init() */
.end = 0, /* Filled in by kai_panel_init() */
.flags = IORESOURCE_MEM,
},
};
static struct resource kai_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,
.start = 0,
.end = 0,
},
{
.name = "hdmi_regs",
.start = TEGRA_HDMI_BASE,
.end = TEGRA_HDMI_BASE + TEGRA_HDMI_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
#endif
static struct tegra_dc_mode kai_panel_modes[] = {
{
/* 1024x600@60Hz */
.pclk = 51206000,
.h_ref_to_sync = 11,
.v_ref_to_sync = 1,
.h_sync_width = 10,
.v_sync_width = 5,
.h_back_porch = 10,
.v_back_porch = 15,
.h_active = 1024,
.v_active = 600,
.h_front_porch = 300,
.v_front_porch = 15,
},
};
static struct tegra_dc_sd_settings kai_sd_settings = {
.enable = 1, /* enabled by default. */
.use_auto_pwm = false,
.hw_update_delay = 0,
.bin_width = -1,
.aggressiveness = 1,
.phase_in_adjustments = true,
.use_vid_luma = false,
/* Default video coefficients */
.coeff = {5, 9, 2},
.fc = {0, 0},
/* Immediate backlight changes */
.blp = {1024, 255},
/* Gammas: R: 2.2 G: 2.2 B: 2.2 */
/* Default BL TF */
.bltf = {
{
{57, 65, 74, 83},
{93, 103, 114, 126},
{138, 151, 165, 179},
{194, 209, 225, 242},
},
{
{58, 66, 75, 84},
{94, 105, 116, 127},
{140, 153, 166, 181},
{196, 211, 227, 244},
},
{
{60, 68, 77, 87},
{97, 107, 119, 130},
{143, 156, 170, 184},
{199, 215, 231, 248},
},
{
{64, 73, 82, 91},
{102, 113, 124, 137},
{149, 163, 177, 192},
{207, 223, 240, 255},
},
},
/* Default LUT */
.lut = {
{
{250, 250, 250},
{194, 194, 194},
{149, 149, 149},
{113, 113, 113},
{82, 82, 82},
{56, 56, 56},
{34, 34, 34},
{15, 15, 15},
{0, 0, 0},
},
{
{246, 246, 246},
{191, 191, 191},
{147, 147, 147},
{111, 111, 111},
{80, 80, 80},
{55, 55, 55},
{33, 33, 33},
{14, 14, 14},
{0, 0, 0},
},
{
{239, 239, 239},
{185, 185, 185},
{142, 142, 142},
{107, 107, 107},
{77, 77, 77},
{52, 52, 52},
{30, 30, 30},
{12, 12, 12},
{0, 0, 0},
},
{
{224, 224, 224},
{173, 173, 173},
{133, 133, 133},
{99, 99, 99},
{70, 70, 70},
{46, 46, 46},
{25, 25, 25},
{7, 7, 7},
{0, 0, 0},
},
},
.sd_brightness = &sd_brightness,
.bl_device = &kai_backlight_device,
};
#ifdef CONFIG_TEGRA_DC
static struct tegra_fb_data kai_fb_data = {
.win = 0,
.xres = 1024,
.yres = 600,
.bits_per_pixel = 32,
.flags = TEGRA_FB_FLIP_ON_PROBE,
};
static struct tegra_fb_data kai_hdmi_fb_data = {
.win = 0,
.xres = 1024,
.yres = 600,
.bits_per_pixel = 32,
.flags = TEGRA_FB_FLIP_ON_PROBE,
};
static struct tegra_dc_out kai_disp2_out = {
.type = TEGRA_DC_OUT_HDMI,
.flags = TEGRA_DC_OUT_HOTPLUG_HIGH,
.dcc_bus = 3,
.hotplug_gpio = kai_hdmi_hpd,
.max_pixclock = KHZ2PICOS(148500),
.align = TEGRA_DC_ALIGN_MSB,
.order = TEGRA_DC_ORDER_RED_BLUE,
.enable = kai_hdmi_enable,
.disable = kai_hdmi_disable,
.postsuspend = kai_hdmi_vddio_disable,
.hotplug_init = kai_hdmi_vddio_enable,
};
static struct tegra_dc_platform_data kai_disp2_pdata = {
.flags = 0,
.default_out = &kai_disp2_out,
.fb = &kai_hdmi_fb_data,
.emc_clk_rate = 300000000,
};
#endif
static struct tegra_dc_out kai_disp1_out = {
.align = TEGRA_DC_ALIGN_MSB,
.order = TEGRA_DC_ORDER_RED_BLUE,
.sd_settings = &kai_sd_settings,
.parent_clk = "pll_p",
.parent_clk_backup = "pll_d2_out0",
.type = TEGRA_DC_OUT_RGB,
.depth = 18,
.dither = TEGRA_DC_ORDERED_DITHER,
.modes = kai_panel_modes,
.n_modes = ARRAY_SIZE(kai_panel_modes),
.enable = kai_panel_enable,
.disable = kai_panel_disable,
};
#ifdef CONFIG_TEGRA_DC
static struct tegra_dc_platform_data kai_disp1_pdata = {
.flags = TEGRA_DC_FLAG_ENABLED,
.default_out = &kai_disp1_out,
.emc_clk_rate = 300000000,
.fb = &kai_fb_data,
};
static struct nvhost_device kai_disp1_device = {
.name = "tegradc",
.id = 0,
.resource = kai_disp1_resources,
.num_resources = ARRAY_SIZE(kai_disp1_resources),
.dev = {
.platform_data = &kai_disp1_pdata,
},
};
static int kai_disp1_check_fb(struct device *dev, struct fb_info *info)
{
return info->device == &kai_disp1_device.dev;
}
static struct nvhost_device kai_disp2_device = {
.name = "tegradc",
.id = 1,
.resource = kai_disp2_resources,
.num_resources = ARRAY_SIZE(kai_disp2_resources),
.dev = {
.platform_data = &kai_disp2_pdata,
},
};
#else
static int kai_disp1_check_fb(struct device *dev, struct fb_info *info)
{
return 0;
}
#endif
#if defined(CONFIG_TEGRA_NVMAP)
static struct nvmap_platform_carveout kai_carveouts[] = {
[0] = NVMAP_HEAP_CARVEOUT_IRAM_INIT,
[1] = {
.name = "generic-0",
.usage_mask = NVMAP_HEAP_CARVEOUT_GENERIC,
.base = 0, /* Filled in by kai_panel_init() */
.size = 0, /* Filled in by kai_panel_init() */
.buddy_size = SZ_32K,
},
};
static struct nvmap_platform_data kai_nvmap_data = {
.carveouts = kai_carveouts,
.nr_carveouts = ARRAY_SIZE(kai_carveouts),
};
static struct platform_device kai_nvmap_device = {
.name = "tegra-nvmap",
.id = -1,
.dev = {
.platform_data = &kai_nvmap_data,
},
};
#endif
static struct platform_device *kai_gfx_devices[] __initdata = {
#if defined(CONFIG_TEGRA_NVMAP)
&kai_nvmap_device,
#endif
&tegra_pwfm0_device,
&kai_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 kai_panel_early_suspender;
static void kai_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 kai_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 kai_panel_init(void)
{
int err;
struct resource __maybe_unused *res;
struct board_info board_info;
tegra_get_board_info(&board_info);
#if defined(CONFIG_TEGRA_NVMAP)
kai_carveouts[1].base = tegra_carveout_start;
kai_carveouts[1].size = tegra_carveout_size;
#endif
gpio_request(kai_lvds_avdd_en, "lvds_avdd_en");
gpio_direction_output(kai_lvds_avdd_en, 1);
tegra_gpio_enable(kai_lvds_avdd_en);
gpio_request(kai_lvds_stdby, "lvds_stdby");
gpio_direction_output(kai_lvds_stdby, 1);
tegra_gpio_enable(kai_lvds_stdby);
gpio_request(kai_lvds_rst, "lvds_rst");
gpio_direction_output(kai_lvds_rst, 1);
tegra_gpio_enable(kai_lvds_rst);
if (board_info.fab == BOARD_FAB_A00) {
gpio_request(kai_lvds_rs_a00, "lvds_rs");
gpio_direction_output(kai_lvds_rs_a00, 0);
tegra_gpio_enable(kai_lvds_rs_a00);
} else {
gpio_request(kai_lvds_rs, "lvds_rs");
gpio_direction_output(kai_lvds_rs, 0);
tegra_gpio_enable(kai_lvds_rs);
}
gpio_request(kai_lvds_lr, "lvds_lr");
gpio_direction_output(kai_lvds_lr, 1);
tegra_gpio_enable(kai_lvds_lr);
gpio_request(kai_lvds_shutdown, "lvds_shutdown");
gpio_direction_output(kai_lvds_shutdown, 1);
tegra_gpio_enable(kai_lvds_shutdown);
tegra_gpio_enable(kai_hdmi_hpd);
gpio_request(kai_hdmi_hpd, "hdmi_hpd");
gpio_direction_input(kai_hdmi_hpd);
#ifdef CONFIG_HAS_EARLYSUSPEND
kai_panel_early_suspender.suspend = kai_panel_early_suspend;
kai_panel_early_suspender.resume = kai_panel_late_resume;
kai_panel_early_suspender.level = EARLY_SUSPEND_LEVEL_DISABLE_FB;
register_early_suspend(&kai_panel_early_suspender);
#endif
#ifdef CONFIG_TEGRA_GRHOST
err = nvhost_device_register(&tegra_grhost_device);
if (err)
return err;
#endif
err = platform_add_devices(kai_gfx_devices,
ARRAY_SIZE(kai_gfx_devices));
#if defined(CONFIG_TEGRA_GRHOST) && defined(CONFIG_TEGRA_DC)
res = nvhost_get_resource_byname(&kai_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)
if (!err)
err = nvhost_device_register(&kai_disp1_device);
res = nvhost_get_resource_byname(&kai_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(&kai_disp2_device);
#endif
#if defined(CONFIG_TEGRA_GRHOST) && defined(CONFIG_TEGRA_NVAVP)
if (!err)
err = nvhost_device_register(&nvavp_device);
#endif
return err;
}
