// SPDX-License-Identifier: GPL-2.0
/*
* Synaptics R63353 Controller driver
*
* Copyright (C) 2020 BSH Hausgerate GmbH
*/
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/media-bus-format.h>
#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
#include <video/mipi_display.h>
#define R63353_INSTR(...) { \
.len = sizeof((u8[]) {__VA_ARGS__}), \
.data = (u8[]){__VA_ARGS__} \
}
struct r63353_instr {
size_t len;
const u8 *data;
};
static const struct r63353_instr sharp_ls068b3sx02_init[] = {
R63353_INSTR(0x51, 0xff),
R63353_INSTR(0x53, 0x0c),
R63353_INSTR(0x55, 0x00),
R63353_INSTR(0x84, 0x00),
R63353_INSTR(0x29),
};
struct r63353_desc {
const char *name;
const struct r63353_instr *init;
const size_t init_length;
const struct drm_display_mode *mode;
u32 width_mm;
u32 height_mm;
};
struct r63353_panel {
struct drm_panel base;
struct mipi_dsi_device *dsi;
struct gpio_desc *reset_gpio;
struct regulator *dvdd;
struct regulator *avdd;
struct r63353_desc *pdata;
};
static inline struct r63353_panel *to_r63353_panel(struct drm_panel *panel)
{
return container_of(panel, struct r63353_panel, base);
}
static int r63353_panel_power_on(struct r63353_panel *rpanel)
{
struct mipi_dsi_device *dsi = rpanel->dsi;
struct device *dev = &dsi->dev;
int ret;
ret = regulator_enable(rpanel->avdd);
if (ret) {
dev_err(dev, "Failed to enable avdd regulator (%d)\n", ret);
return ret;
}
usleep_range(15000, 25000);
ret = regulator_enable(rpanel->dvdd);
if (ret) {
dev_err(dev, "Failed to enable dvdd regulator (%d)\n", ret);
regulator_disable(rpanel->avdd);
return ret;
}
usleep_range(300000, 350000);
gpiod_set_value(rpanel->reset_gpio, 1);
usleep_range(15000, 25000);
return 0;
}
static int r63353_panel_power_off(struct r63353_panel *rpanel)
{
gpiod_set_value(rpanel->reset_gpio, 0);
regulator_disable(rpanel->dvdd);
regulator_disable(rpanel->avdd);
return 0;
}
static int r63353_panel_activate(struct r63353_panel *rpanel)
{
struct mipi_dsi_device *dsi = rpanel->dsi;
struct device *dev = &dsi->dev;
int i, ret;
ret = mipi_dsi_dcs_soft_reset(dsi);
if (ret < 0) {
dev_err(dev, "Failed to do Software Reset (%d)\n", ret);
goto fail;
}
usleep_range(15000, 17000);
ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
if (ret < 0) {
dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
goto fail;
}
for (i = 0; i < rpanel->pdata->init_length; i++) {
const struct r63353_instr *instr = &rpanel->pdata->init[i];
ret = mipi_dsi_dcs_write_buffer(dsi, instr->data, instr->len);
if (ret < 0)
goto fail;
}
msleep(120);
ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
if (ret < 0) {
dev_err(dev, "Failed to exit sleep mode (%d)\n", ret);
goto fail;
}
usleep_range(5000, 10000);
ret = mipi_dsi_dcs_set_display_on(dsi);
if (ret < 0) {
dev_err(dev, "Failed to set display ON (%d)\n", ret);
goto fail;
}
return 0;
fail:
gpiod_set_value(rpanel->reset_gpio, 0);
return ret;
}
static int r63353_panel_prepare(struct drm_panel *panel)
{
struct r63353_panel *rpanel = to_r63353_panel(panel);
struct mipi_dsi_device *dsi = rpanel->dsi;
struct device *dev = &dsi->dev;
int ret;
dev_dbg(dev, "Preparing\n");
ret = r63353_panel_power_on(rpanel);
if (ret)
return ret;
ret = r63353_panel_activate(rpanel);
if (ret) {
r63353_panel_power_off(rpanel);
return ret;
}
dev_dbg(dev, "Prepared\n");
return 0;
}
static int r63353_panel_deactivate(struct r63353_panel *rpanel)
{
struct mipi_dsi_device *dsi = rpanel->dsi;
struct device *dev = &dsi->dev;
int ret;
ret = mipi_dsi_dcs_set_display_off(dsi);
if (ret < 0) {
dev_err(dev, "Failed to set display OFF (%d)\n", ret);
return ret;
}
usleep_range(5000, 10000);
ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
if (ret < 0) {
dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
return ret;
}
return 0;
}
static int r63353_panel_unprepare(struct drm_panel *panel)
{
struct r63353_panel *rpanel = to_r63353_panel(panel);
r63353_panel_deactivate(rpanel);
r63353_panel_power_off(rpanel);
return 0;
}
static const struct drm_display_mode sharp_ls068b3sx02_timing = {
.clock = 70000,
.hdisplay = 640,
.hsync_start = 640 + 35,
.hsync_end = 640 + 35 + 2,
.htotal = 640 + 35 + 2 + 150,
.vdisplay = 1280,
.vsync_start = 1280 + 2,
.vsync_end = 1280 + 2 + 4,
.vtotal = 1280 + 2 + 4 + 0,
};
static int r63353_panel_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct r63353_panel *rpanel = to_r63353_panel(panel);
struct drm_display_mode *mode;
static const u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;
mode = drm_mode_duplicate(connector->dev, rpanel->pdata->mode);
if (!mode)
return -ENOMEM;
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
connector->display_info.width_mm = rpanel->pdata->width_mm;
connector->display_info.height_mm = rpanel->pdata->height_mm;
drm_display_info_set_bus_formats(&connector->display_info,
&bus_format, 1);
return 1;
}
static const struct drm_panel_funcs r63353_panel_funcs = {
.prepare = r63353_panel_prepare,
.unprepare = r63353_panel_unprepare,
.get_modes = r63353_panel_get_modes,
};
static int r63353_panel_probe(struct mipi_dsi_device *dsi)
{
int ret = 0;
struct device *dev = &dsi->dev;
struct r63353_panel *panel;
panel = devm_kzalloc(&dsi->dev, sizeof(*panel), GFP_KERNEL);
if (!panel)
return -ENOMEM;
mipi_dsi_set_drvdata(dsi, panel);
panel->dsi = dsi;
panel->pdata = (struct r63353_desc *)of_device_get_match_data(dev);
dev_info(dev, "Panel %s\n", panel->pdata->name);
dsi->lanes = 2;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO |
MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM |
MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_NO_EOT_PACKET;
panel->dvdd = devm_regulator_get(dev, "dvdd");
if (IS_ERR(panel->dvdd))
return PTR_ERR(panel->dvdd);
panel->avdd = devm_regulator_get(dev, "avdd");
if (IS_ERR(panel->avdd))
return PTR_ERR(panel->avdd);
panel->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(panel->reset_gpio)) {
dev_err(dev, "failed to get RESET GPIO\n");
return PTR_ERR(panel->reset_gpio);
}
drm_panel_init(&panel->base, dev, &r63353_panel_funcs,
DRM_MODE_CONNECTOR_DSI);
panel->base.prepare_prev_first = true;
ret = drm_panel_of_backlight(&panel->base);
if (ret)
return ret;
drm_panel_add(&panel->base);
ret = mipi_dsi_attach(dsi);
if (ret < 0) {
dev_err(dev, "mipi_dsi_attach failed: %d\n", ret);
drm_panel_remove(&panel->base);
return ret;
}
return ret;
}
static void r63353_panel_remove(struct mipi_dsi_device *dsi)
{
struct r63353_panel *rpanel = mipi_dsi_get_drvdata(dsi);
struct device *dev = &dsi->dev;
int ret;
ret = mipi_dsi_detach(dsi);
if (ret < 0)
dev_err(dev, "Failed to detach from host (%d)\n", ret);
drm_panel_remove(&rpanel->base);
}
static void r63353_panel_shutdown(struct mipi_dsi_device *dsi)
{
struct r63353_panel *rpanel = mipi_dsi_get_drvdata(dsi);
r63353_panel_unprepare(&rpanel->base);
}
static const struct r63353_desc sharp_ls068b3sx02_data = {
.name = "Sharp LS068B3SX02",
.mode = &sharp_ls068b3sx02_timing,
.init = sharp_ls068b3sx02_init,
.init_length = ARRAY_SIZE(sharp_ls068b3sx02_init),
.width_mm = 68,
.height_mm = 159,
};
static const struct of_device_id r63353_of_match[] = {
{ .compatible = "sharp,ls068b3sx02", .data = &sharp_ls068b3sx02_data },
{ }
};
MODULE_DEVICE_TABLE(of, r63353_of_match);
static struct mipi_dsi_driver r63353_panel_driver = {
.driver = {
.name = "r63353-dsi",
.of_match_table = r63353_of_match,
},
.probe = r63353_panel_probe,
.remove = r63353_panel_remove,
.shutdown = r63353_panel_shutdown,
};
module_mipi_dsi_driver(r63353_panel_driver);
MODULE_AUTHOR("Matthias Proske <[email protected]>");
MODULE_AUTHOR("Michael Trimarchi <[email protected]>");
MODULE_DESCRIPTION("Synaptics R63353 Controller Driver");
MODULE_LICENSE("GPL");
Codebase Browser
linux