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/*
* Copyright (c) 2013-2014, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
*/
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/export.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <mach/dc.h>
#include "board-panel.h"
#include "board.h"
#include "iomap.h"
atomic_t sd_brightness = ATOMIC_INIT(255);
EXPORT_SYMBOL(sd_brightness);
void tegra_dsi_resources_init(u8 dsi_instance,
struct resource *resources, int n_resources)
{
int i;
for (i = 0; i < n_resources; i++) {
struct resource *r = &resources[i];
if (resource_type(r) == IORESOURCE_MEM &&
!strcmp(r->name, "dsi_regs")) {
switch (dsi_instance) {
case DSI_INSTANCE_0:
r->start = TEGRA_DSI_BASE;
r->end = TEGRA_DSI_BASE + TEGRA_DSI_SIZE - 1;
break;
case DSI_INSTANCE_1:
default:
r->start = TEGRA_DSIB_BASE;
r->end = TEGRA_DSIB_BASE + TEGRA_DSIB_SIZE - 1;
break;
}
}
if (resource_type(r) == IORESOURCE_MEM &&
!strcmp(r->name, "ganged_dsia_regs")) {
r->start = TEGRA_DSI_BASE;
r->end = TEGRA_DSI_BASE + TEGRA_DSI_SIZE - 1;
}
if (resource_type(r) == IORESOURCE_MEM &&
!strcmp(r->name, "ganged_dsib_regs")) {
r->start = TEGRA_DSIB_BASE;
r->end = TEGRA_DSIB_BASE + TEGRA_DSIB_SIZE - 1;
}
}
}
void tegra_dsi_update_init_cmd_gpio_rst(
struct tegra_dc_out *dsi_disp1_out)
{
int i;
for (i = 0; i < dsi_disp1_out->dsi->n_init_cmd; i++) {
if (dsi_disp1_out->dsi->dsi_init_cmd[i].cmd_type ==
TEGRA_DSI_GPIO_SET)
dsi_disp1_out->dsi->dsi_init_cmd[i].sp_len_dly.gpio
= dsi_disp1_out->dsi->dsi_panel_rst_gpio;
}
}
int tegra_panel_reset(struct tegra_panel_of *panel, unsigned int delay_ms)
{
int gpio = panel->panel_gpio[TEGRA_GPIO_RESET];
if (!gpio_is_valid(gpio))
return -ENOENT;
gpio_direction_output(gpio, 1);
usleep_range(1000, 5000);
gpio_set_value(gpio, 0);
usleep_range(1000, 5000);
gpio_set_value(gpio, 1);
msleep(delay_ms);
return 0;
}
int tegra_panel_gpio_get_dt(const char *comp_str,
struct tegra_panel_of *panel)
{
int cnt = 0;
char *label = NULL;
const char *node_status;
int err = 0;
struct device_node *node =
of_find_compatible_node(NULL, NULL, comp_str);
/*
* If gpios are already populated, just return.
*/
if (panel->panel_gpio_populated)
return 0;
if (!node) {
pr_info("%s panel dt support not available\n", comp_str);
err = -ENOENT;
goto fail;
}
of_property_read_string(node, "status", &node_status);
if (strcmp(node_status, "okay")) {
pr_info("%s panel dt support disabled\n", comp_str);
err = -ENOENT;
goto fail;
}
panel->panel_gpio[TEGRA_GPIO_RESET] =
of_get_named_gpio(node, "nvidia,dsi-panel-rst-gpio", 0);
panel->panel_gpio[TEGRA_GPIO_BL_ENABLE] =
of_get_named_gpio(node, "nvidia,dsi-panel-bl-en-gpio", 0);
panel->panel_gpio[TEGRA_GPIO_PWM] =
of_get_named_gpio(node, "nvidia,dsi-panel-bl-pwm-gpio", 0);
for (cnt = 0; cnt < TEGRA_N_GPIO_PANEL; cnt++) {
if (gpio_is_valid(panel->panel_gpio[cnt])) {
switch (cnt) {
case TEGRA_GPIO_RESET:
label = "tegra-panel-reset";
break;
case TEGRA_GPIO_BL_ENABLE:
label = "tegra-panel-bl-enable";
break;
case TEGRA_GPIO_PWM:
label = "tegra-panel-pwm";
break;
default:
pr_err("tegra panel no gpio entry\n");
}
gpio_request(panel->panel_gpio[cnt], label);
}
}
if (gpio_is_valid(panel->panel_gpio[TEGRA_GPIO_PWM]))
gpio_free(panel->panel_gpio[TEGRA_GPIO_PWM]);
panel->panel_gpio_populated = true;
fail:
of_node_put(node);
return err;
}
static void tegra_panel_register_ops(struct tegra_dc_out *dc_out,
struct tegra_panel_ops *p_ops)
{
BUG_ON(!dc_out);
if (!p_ops) {
/* TODO: register default ops */
}
dc_out->enable = p_ops->enable;
dc_out->postpoweron = p_ops->postpoweron;
dc_out->prepoweroff = p_ops->prepoweroff;
dc_out->disable = p_ops->disable;
dc_out->hotplug_init = p_ops->hotplug_init;
dc_out->postsuspend = p_ops->postsuspend;
dc_out->hotplug_report = p_ops->hotplug_report;
}
struct device_node *tegra_panel_get_dt_node(
struct tegra_dc_platform_data *pdata)
{
struct tegra_dc_out *dc_out = NULL;
struct device_node *np_panel = NULL;
struct board_info display_board;
tegra_get_display_board_info(&display_board);
if (pdata)
dc_out = pdata->default_out;
switch (display_board.board_id) {
case BOARD_E1627:
case BOARD_E1797:
if (pdata && dc_out)
tegra_panel_register_ops(dc_out,
&dsi_p_wuxga_10_1_ops);
np_panel = of_find_compatible_node(NULL, NULL, "p,wuxga-10-1");
break;
case BOARD_E1549:
if (pdata && dc_out)
tegra_panel_register_ops(dc_out,
&dsi_lgd_wxga_7_0_ops);
np_panel = of_find_compatible_node(NULL, NULL, "lg,wxga-7");
break;
case BOARD_E1639:
case BOARD_E1813:
if (pdata && dc_out)
tegra_panel_register_ops(dc_out,
&dsi_s_wqxga_10_1_ops);
np_panel = of_find_compatible_node(NULL, NULL, "s,wqxga-10-1");
break;
default:
WARN(1, "Display panel not supported\n");
};
return of_device_is_available(np_panel) ? np_panel : NULL;
}
#ifdef CONFIG_TEGRA_DC
/**
* tegra_init_hdmi - initialize and add HDMI device if not disabled by DT
*/
int tegra_init_hdmi(struct platform_device *pdev,
struct platform_device *phost1x)
{
struct resource __maybe_unused *res;
bool enabled = true;
int err;
#ifdef CONFIG_OF
struct device_node *hdmi_node = NULL;
hdmi_node = of_find_node_by_path("/host1x/hdmi");
/* disable HDMI if explicitly set that way in the device tree */
enabled = !hdmi_node || of_device_is_available(hdmi_node);
#endif
if (enabled) {
#ifndef CONFIG_TEGRA_HDMI_PRIMARY
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"fbmem");
res->start = tegra_fb2_start;
res->end = tegra_fb2_start + tegra_fb2_size - 1;
#endif
pdev->dev.parent = &phost1x->dev;
err = platform_device_register(pdev);
if (err) {
dev_err(&pdev->dev, "device registration failed\n");
return err;
}
}
return 0;
}
#else
int tegra_init_hdmi(struct platform_device *pdev,
struct platform_device *phost1x)
{
return 0;
}
#endif
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