// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2020 Linaro Ltd
* Author: Sumit Semwal <[email protected]>
*
* This driver is for the DSI interface to panels using the NT36672A display driver IC
* from Novatek.
* Currently supported are the Tianma FHD+ panels found in some Xiaomi phones, including
* some variants of the Poco F1 phone.
*
* Panels using the Novatek NT37762A IC should add appropriate configuration per-panel and
* use this driver.
*/
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/gpio/consumer.h>
#include <linux/pinctrl/consumer.h>
#include <linux/regulator/consumer.h>
#include <drm/drm_device.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
#include <video/mipi_display.h>
struct nt36672a_panel_cmd {
const char data[2];
};
static const char * const nt36672a_regulator_names[] = {
"vddio",
"vddpos",
"vddneg",
};
static unsigned long const nt36672a_regulator_enable_loads[] = {
62000,
100000,
100000
};
struct nt36672a_panel_desc {
const struct drm_display_mode *display_mode;
const char *panel_name;
unsigned int width_mm;
unsigned int height_mm;
unsigned long mode_flags;
enum mipi_dsi_pixel_format format;
unsigned int lanes;
unsigned int num_on_cmds_1;
const struct nt36672a_panel_cmd *on_cmds_1;
unsigned int num_on_cmds_2;
const struct nt36672a_panel_cmd *on_cmds_2;
unsigned int num_off_cmds;
const struct nt36672a_panel_cmd *off_cmds;
};
struct nt36672a_panel {
struct drm_panel base;
struct mipi_dsi_device *link;
const struct nt36672a_panel_desc *desc;
struct regulator_bulk_data supplies[ARRAY_SIZE(nt36672a_regulator_names)];
struct gpio_desc *reset_gpio;
};
static inline struct nt36672a_panel *to_nt36672a_panel(struct drm_panel *panel)
{
return container_of(panel, struct nt36672a_panel, base);
}
static int nt36672a_send_cmds(struct drm_panel *panel, const struct nt36672a_panel_cmd *cmds,
int num)
{
struct nt36672a_panel *pinfo = to_nt36672a_panel(panel);
unsigned int i;
int err;
for (i = 0; i < num; i++) {
const struct nt36672a_panel_cmd *cmd = &cmds[i];
err = mipi_dsi_dcs_write(pinfo->link, cmd->data[0], cmd->data + 1, 1);
if (err < 0)
return err;
}
return 0;
}
static int nt36672a_panel_power_off(struct drm_panel *panel)
{
struct nt36672a_panel *pinfo = to_nt36672a_panel(panel);
int ret = 0;
gpiod_set_value(pinfo->reset_gpio, 1);
ret = regulator_bulk_disable(ARRAY_SIZE(pinfo->supplies), pinfo->supplies);
if (ret)
dev_err(panel->dev, "regulator_bulk_disable failed %d\n", ret);
return ret;
}
static int nt36672a_panel_unprepare(struct drm_panel *panel)
{
struct nt36672a_panel *pinfo = to_nt36672a_panel(panel);
int ret;
/* send off cmds */
ret = nt36672a_send_cmds(panel, pinfo->desc->off_cmds,
pinfo->desc->num_off_cmds);
if (ret < 0)
dev_err(panel->dev, "failed to send DCS off cmds: %d\n", ret);
ret = mipi_dsi_dcs_set_display_off(pinfo->link);
if (ret < 0)
dev_err(panel->dev, "set_display_off cmd failed ret = %d\n", ret);
/* 120ms delay required here as per DCS spec */
msleep(120);
ret = mipi_dsi_dcs_enter_sleep_mode(pinfo->link);
if (ret < 0)
dev_err(panel->dev, "enter_sleep cmd failed ret = %d\n", ret);
/* 0x3C = 60ms delay */
msleep(60);
ret = nt36672a_panel_power_off(panel);
if (ret < 0)
dev_err(panel->dev, "power_off failed ret = %d\n", ret);
return ret;
}
static int nt36672a_panel_power_on(struct nt36672a_panel *pinfo)
{
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(pinfo->supplies), pinfo->supplies);
if (ret < 0)
return ret;
/*
* As per downstream kernel, Reset sequence of Tianma FHD panel requires the panel to
* be out of reset for 10ms, followed by being held in reset for 10ms. But for Android
* AOSP, we needed to bump it upto 200ms otherwise we get white screen sometimes.
* FIXME: Try to reduce this 200ms to a lesser value.
*/
gpiod_set_value(pinfo->reset_gpio, 1);
msleep(200);
gpiod_set_value(pinfo->reset_gpio, 0);
msleep(200);
return 0;
}
static int nt36672a_panel_prepare(struct drm_panel *panel)
{
struct nt36672a_panel *pinfo = to_nt36672a_panel(panel);
int err;
err = nt36672a_panel_power_on(pinfo);
if (err < 0)
goto poweroff;
/* send first part of init cmds */
err = nt36672a_send_cmds(panel, pinfo->desc->on_cmds_1,
pinfo->desc->num_on_cmds_1);
if (err < 0) {
dev_err(panel->dev, "failed to send DCS Init 1st Code: %d\n", err);
goto poweroff;
}
err = mipi_dsi_dcs_exit_sleep_mode(pinfo->link);
if (err < 0) {
dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
goto poweroff;
}
/* 0x46 = 70 ms delay */
msleep(70);
err = mipi_dsi_dcs_set_display_on(pinfo->link);
if (err < 0) {
dev_err(panel->dev, "failed to Set Display ON: %d\n", err);
goto poweroff;
}
/* Send rest of the init cmds */
err = nt36672a_send_cmds(panel, pinfo->desc->on_cmds_2,
pinfo->desc->num_on_cmds_2);
if (err < 0) {
dev_err(panel->dev, "failed to send DCS Init 2nd Code: %d\n", err);
goto poweroff;
}
msleep(120);
return 0;
poweroff:
gpiod_set_value(pinfo->reset_gpio, 0);
return err;
}
static int nt36672a_panel_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct nt36672a_panel *pinfo = to_nt36672a_panel(panel);
const struct drm_display_mode *m = pinfo->desc->display_mode;
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, m);
if (!mode) {
dev_err(panel->dev, "failed to add mode %ux%u@%u\n", m->hdisplay,
m->vdisplay, drm_mode_vrefresh(m));
return -ENOMEM;
}
connector->display_info.width_mm = pinfo->desc->width_mm;
connector->display_info.height_mm = pinfo->desc->height_mm;
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
return 1;
}
static const struct drm_panel_funcs panel_funcs = {
.unprepare = nt36672a_panel_unprepare,
.prepare = nt36672a_panel_prepare,
.get_modes = nt36672a_panel_get_modes,
};
static const struct nt36672a_panel_cmd tianma_fhd_video_on_cmds_1[] = {
/* skin enhancement mode */
{ .data = {0xFF, 0x22} },
{ .data = {0x00, 0x40} },
{ .data = {0x01, 0xC0} },
{ .data = {0x02, 0x40} },
{ .data = {0x03, 0x40} },
{ .data = {0x04, 0x40} },
{ .data = {0x05, 0x40} },
{ .data = {0x06, 0x40} },
{ .data = {0x07, 0x40} },
{ .data = {0x08, 0x40} },
{ .data = {0x09, 0x40} },
{ .data = {0x0A, 0x40} },
{ .data = {0x0B, 0x40} },
{ .data = {0x0C, 0x40} },
{ .data = {0x0D, 0x40} },
{ .data = {0x0E, 0x40} },
{ .data = {0x0F, 0x40} },
{ .data = {0x10, 0x40} },
{ .data = {0x11, 0x50} },
{ .data = {0x12, 0x60} },
{ .data = {0x13, 0x70} },
{ .data = {0x14, 0x58} },
{ .data = {0x15, 0x68} },
{ .data = {0x16, 0x78} },
{ .data = {0x17, 0x77} },
{ .data = {0x18, 0x39} },
{ .data = {0x19, 0x2D} },
{ .data = {0x1A, 0x2E} },
{ .data = {0x1B, 0x32} },
{ .data = {0x1C, 0x37} },
{ .data = {0x1D, 0x3A} },
{ .data = {0x1E, 0x40} },
{ .data = {0x1F, 0x40} },
{ .data = {0x20, 0x40} },
{ .data = {0x21, 0x40} },
{ .data = {0x22, 0x40} },
{ .data = {0x23, 0x40} },
{ .data = {0x24, 0x40} },
{ .data = {0x25, 0x40} },
{ .data = {0x26, 0x40} },
{ .data = {0x27, 0x40} },
{ .data = {0x28, 0x40} },
{ .data = {0x2D, 0x00} },
{ .data = {0x2F, 0x40} },
{ .data = {0x30, 0x40} },
{ .data = {0x31, 0x40} },
{ .data = {0x32, 0x40} },
{ .data = {0x33, 0x40} },
{ .data = {0x34, 0x40} },
{ .data = {0x35, 0x40} },
{ .data = {0x36, 0x40} },
{ .data = {0x37, 0x40} },
{ .data = {0x38, 0x40} },
{ .data = {0x39, 0x40} },
{ .data = {0x3A, 0x40} },
{ .data = {0x3B, 0x40} },
{ .data = {0x3D, 0x40} },
{ .data = {0x3F, 0x40} },
{ .data = {0x40, 0x40} },
{ .data = {0x41, 0x40} },
{ .data = {0x42, 0x40} },
{ .data = {0x43, 0x40} },
{ .data = {0x44, 0x40} },
{ .data = {0x45, 0x40} },
{ .data = {0x46, 0x40} },
{ .data = {0x47, 0x40} },
{ .data = {0x48, 0x40} },
{ .data = {0x49, 0x40} },
{ .data = {0x4A, 0x40} },
{ .data = {0x4B, 0x40} },
{ .data = {0x4C, 0x40} },
{ .data = {0x4D, 0x40} },
{ .data = {0x4E, 0x40} },
{ .data = {0x4F, 0x40} },
{ .data = {0x50, 0x40} },
{ .data = {0x51, 0x40} },
{ .data = {0x52, 0x40} },
{ .data = {0x53, 0x01} },
{ .data = {0x54, 0x01} },
{ .data = {0x55, 0xFE} },
{ .data = {0x56, 0x77} },
{ .data = {0x58, 0xCD} },
{ .data = {0x59, 0xD0} },
{ .data = {0x5A, 0xD0} },
{ .data = {0x5B, 0x50} },
{ .data = {0x5C, 0x50} },
{ .data = {0x5D, 0x50} },
{ .data = {0x5E, 0x50} },
{ .data = {0x5F, 0x50} },
{ .data = {0x60, 0x50} },
{ .data = {0x61, 0x50} },
{ .data = {0x62, 0x50} },
{ .data = {0x63, 0x50} },
{ .data = {0x64, 0x50} },
{ .data = {0x65, 0x50} },
{ .data = {0x66, 0x50} },
{ .data = {0x67, 0x50} },
{ .data = {0x68, 0x50} },
{ .data = {0x69, 0x50} },
{ .data = {0x6A, 0x50} },
{ .data = {0x6B, 0x50} },
{ .data = {0x6C, 0x50} },
{ .data = {0x6D, 0x50} },
{ .data = {0x6E, 0x50} },
{ .data = {0x6F, 0x50} },
{ .data = {0x70, 0x07} },
{ .data = {0x71, 0x00} },
{ .data = {0x72, 0x00} },
{ .data = {0x73, 0x00} },
{ .data = {0x74, 0x06} },
{ .data = {0x75, 0x0C} },
{ .data = {0x76, 0x03} },
{ .data = {0x77, 0x09} },
{ .data = {0x78, 0x0F} },
{ .data = {0x79, 0x68} },
{ .data = {0x7A, 0x88} },
{ .data = {0x7C, 0x80} },
{ .data = {0x7D, 0x80} },
{ .data = {0x7E, 0x80} },
{ .data = {0x7F, 0x00} },
{ .data = {0x80, 0x00} },
{ .data = {0x81, 0x00} },
{ .data = {0x83, 0x01} },
{ .data = {0x84, 0x00} },
{ .data = {0x85, 0x80} },
{ .data = {0x86, 0x80} },
{ .data = {0x87, 0x80} },
{ .data = {0x88, 0x40} },
{ .data = {0x89, 0x91} },
{ .data = {0x8A, 0x98} },
{ .data = {0x8B, 0x80} },
{ .data = {0x8C, 0x80} },
{ .data = {0x8D, 0x80} },
{ .data = {0x8E, 0x80} },
{ .data = {0x8F, 0x80} },
{ .data = {0x90, 0x80} },
{ .data = {0x91, 0x80} },
{ .data = {0x92, 0x80} },
{ .data = {0x93, 0x80} },
{ .data = {0x94, 0x80} },
{ .data = {0x95, 0x80} },
{ .data = {0x96, 0x80} },
{ .data = {0x97, 0x80} },
{ .data = {0x98, 0x80} },
{ .data = {0x99, 0x80} },
{ .data = {0x9A, 0x80} },
{ .data = {0x9B, 0x80} },
{ .data = {0x9C, 0x80} },
{ .data = {0x9D, 0x80} },
{ .data = {0x9E, 0x80} },
{ .data = {0x9F, 0x80} },
{ .data = {0xA0, 0x8A} },
{ .data = {0xA2, 0x80} },
{ .data = {0xA6, 0x80} },
{ .data = {0xA7, 0x80} },
{ .data = {0xA9, 0x80} },
{ .data = {0xAA, 0x80} },
{ .data = {0xAB, 0x80} },
{ .data = {0xAC, 0x80} },
{ .data = {0xAD, 0x80} },
{ .data = {0xAE, 0x80} },
{ .data = {0xAF, 0x80} },
{ .data = {0xB7, 0x76} },
{ .data = {0xB8, 0x76} },
{ .data = {0xB9, 0x05} },
{ .data = {0xBA, 0x0D} },
{ .data = {0xBB, 0x14} },
{ .data = {0xBC, 0x0F} },
{ .data = {0xBD, 0x18} },
{ .data = {0xBE, 0x1F} },
{ .data = {0xBF, 0x05} },
{ .data = {0xC0, 0x0D} },
{ .data = {0xC1, 0x14} },
{ .data = {0xC2, 0x03} },
{ .data = {0xC3, 0x07} },
{ .data = {0xC4, 0x0A} },
{ .data = {0xC5, 0xA0} },
{ .data = {0xC6, 0x55} },
{ .data = {0xC7, 0xFF} },
{ .data = {0xC8, 0x39} },
{ .data = {0xC9, 0x44} },
{ .data = {0xCA, 0x12} },
{ .data = {0xCD, 0x80} },
{ .data = {0xDB, 0x80} },
{ .data = {0xDC, 0x80} },
{ .data = {0xDD, 0x80} },
{ .data = {0xE0, 0x80} },
{ .data = {0xE1, 0x80} },
{ .data = {0xE2, 0x80} },
{ .data = {0xE3, 0x80} },
{ .data = {0xE4, 0x80} },
{ .data = {0xE5, 0x40} },
{ .data = {0xE6, 0x40} },
{ .data = {0xE7, 0x40} },
{ .data = {0xE8, 0x40} },
{ .data = {0xE9, 0x40} },
{ .data = {0xEA, 0x40} },
{ .data = {0xEB, 0x40} },
{ .data = {0xEC, 0x40} },
{ .data = {0xED, 0x40} },
{ .data = {0xEE, 0x40} },
{ .data = {0xEF, 0x40} },
{ .data = {0xF0, 0x40} },
{ .data = {0xF1, 0x40} },
{ .data = {0xF2, 0x40} },
{ .data = {0xF3, 0x40} },
{ .data = {0xF4, 0x40} },
{ .data = {0xF5, 0x40} },
{ .data = {0xF6, 0x40} },
{ .data = {0xFB, 0x1} },
{ .data = {0xFF, 0x23} },
{ .data = {0xFB, 0x01} },
/* dimming enable */
{ .data = {0x01, 0x84} },
{ .data = {0x05, 0x2D} },
{ .data = {0x06, 0x00} },
/* resolution 1080*2246 */
{ .data = {0x11, 0x01} },
{ .data = {0x12, 0x7B} },
{ .data = {0x15, 0x6F} },
{ .data = {0x16, 0x0B} },
/* UI mode */
{ .data = {0x29, 0x0A} },
{ .data = {0x30, 0xFF} },
{ .data = {0x31, 0xFF} },
{ .data = {0x32, 0xFF} },
{ .data = {0x33, 0xFF} },
{ .data = {0x34, 0xFF} },
{ .data = {0x35, 0xFF} },
{ .data = {0x36, 0xFF} },
{ .data = {0x37, 0xFF} },
{ .data = {0x38, 0xFC} },
{ .data = {0x39, 0xF8} },
{ .data = {0x3A, 0xF4} },
{ .data = {0x3B, 0xF1} },
{ .data = {0x3D, 0xEE} },
{ .data = {0x3F, 0xEB} },
{ .data = {0x40, 0xE8} },
{ .data = {0x41, 0xE5} },
/* STILL mode */
{ .data = {0x2A, 0x13} },
{ .data = {0x45, 0xFF} },
{ .data = {0x46, 0xFF} },
{ .data = {0x47, 0xFF} },
{ .data = {0x48, 0xFF} },
{ .data = {0x49, 0xFF} },
{ .data = {0x4A, 0xFF} },
{ .data = {0x4B, 0xFF} },
{ .data = {0x4C, 0xFF} },
{ .data = {0x4D, 0xED} },
{ .data = {0x4E, 0xD5} },
{ .data = {0x4F, 0xBF} },
{ .data = {0x50, 0xA6} },
{ .data = {0x51, 0x96} },
{ .data = {0x52, 0x86} },
{ .data = {0x53, 0x76} },
{ .data = {0x54, 0x66} },
/* MOVING mode */
{ .data = {0x2B, 0x0E} },
{ .data = {0x58, 0xFF} },
{ .data = {0x59, 0xFF} },
{ .data = {0x5A, 0xFF} },
{ .data = {0x5B, 0xFF} },
{ .data = {0x5C, 0xFF} },
{ .data = {0x5D, 0xFF} },
{ .data = {0x5E, 0xFF} },
{ .data = {0x5F, 0xFF} },
{ .data = {0x60, 0xF6} },
{ .data = {0x61, 0xEA} },
{ .data = {0x62, 0xE1} },
{ .data = {0x63, 0xD8} },
{ .data = {0x64, 0xCE} },
{ .data = {0x65, 0xC3} },
{ .data = {0x66, 0xBA} },
{ .data = {0x67, 0xB3} },
{ .data = {0xFF, 0x25} },
{ .data = {0xFB, 0x01} },
{ .data = {0x05, 0x04} },
{ .data = {0xFF, 0x26} },
{ .data = {0xFB, 0x01} },
{ .data = {0x1C, 0xAF} },
{ .data = {0xFF, 0x10} },
{ .data = {0xFB, 0x01} },
{ .data = {0x51, 0xFF} },
{ .data = {0x53, 0x24} },
{ .data = {0x55, 0x00} },
};
static const struct nt36672a_panel_cmd tianma_fhd_video_on_cmds_2[] = {
{ .data = {0xFF, 0x24} },
{ .data = {0xFB, 0x01} },
{ .data = {0xC3, 0x01} },
{ .data = {0xC4, 0x54} },
{ .data = {0xFF, 0x10} },
};
static const struct nt36672a_panel_cmd tianma_fhd_video_off_cmds[] = {
{ .data = {0xFF, 0x24} },
{ .data = {0xFB, 0x01} },
{ .data = {0xC3, 0x01} },
{ .data = {0xFF, 0x10} },
};
static const struct drm_display_mode tianma_fhd_video_panel_default_mode = {
.clock = 161331,
.hdisplay = 1080,
.hsync_start = 1080 + 40,
.hsync_end = 1080 + 40 + 20,
.htotal = 1080 + 40 + 20 + 44,
.vdisplay = 2246,
.vsync_start = 2246 + 15,
.vsync_end = 2246 + 15 + 2,
.vtotal = 2246 + 15 + 2 + 8,
.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
};
static const struct nt36672a_panel_desc tianma_fhd_video_panel_desc = {
.display_mode = &tianma_fhd_video_panel_default_mode,
.width_mm = 68,
.height_mm = 136,
.mode_flags = MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_VIDEO
| MIPI_DSI_MODE_VIDEO_HSE
| MIPI_DSI_CLOCK_NON_CONTINUOUS
| MIPI_DSI_MODE_VIDEO_BURST,
.format = MIPI_DSI_FMT_RGB888,
.lanes = 4,
.on_cmds_1 = tianma_fhd_video_on_cmds_1,
.num_on_cmds_1 = ARRAY_SIZE(tianma_fhd_video_on_cmds_1),
.on_cmds_2 = tianma_fhd_video_on_cmds_2,
.num_on_cmds_2 = ARRAY_SIZE(tianma_fhd_video_on_cmds_2),
.off_cmds = tianma_fhd_video_off_cmds,
.num_off_cmds = ARRAY_SIZE(tianma_fhd_video_off_cmds),
};
static int nt36672a_panel_add(struct nt36672a_panel *pinfo)
{
struct device *dev = &pinfo->link->dev;
int i, ret;
for (i = 0; i < ARRAY_SIZE(pinfo->supplies); i++) {
pinfo->supplies[i].supply = nt36672a_regulator_names[i];
pinfo->supplies[i].init_load_uA = nt36672a_regulator_enable_loads[i];
}
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(pinfo->supplies),
pinfo->supplies);
if (ret < 0)
return dev_err_probe(dev, ret, "failed to get regulators\n");
pinfo->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(pinfo->reset_gpio))
return dev_err_probe(dev, PTR_ERR(pinfo->reset_gpio),
"failed to get reset gpio from DT\n");
drm_panel_init(&pinfo->base, dev, &panel_funcs, DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_of_backlight(&pinfo->base);
if (ret)
return dev_err_probe(dev, ret, "Failed to get backlight\n");
drm_panel_add(&pinfo->base);
return 0;
}
static int nt36672a_panel_probe(struct mipi_dsi_device *dsi)
{
struct nt36672a_panel *pinfo;
const struct nt36672a_panel_desc *desc;
int err;
pinfo = devm_kzalloc(&dsi->dev, sizeof(*pinfo), GFP_KERNEL);
if (!pinfo)
return -ENOMEM;
desc = of_device_get_match_data(&dsi->dev);
dsi->mode_flags = desc->mode_flags;
dsi->format = desc->format;
dsi->lanes = desc->lanes;
pinfo->desc = desc;
pinfo->link = dsi;
mipi_dsi_set_drvdata(dsi, pinfo);
err = nt36672a_panel_add(pinfo);
if (err < 0)
return err;
err = mipi_dsi_attach(dsi);
if (err < 0) {
drm_panel_remove(&pinfo->base);
return err;
}
return 0;
}
static void nt36672a_panel_remove(struct mipi_dsi_device *dsi)
{
struct nt36672a_panel *pinfo = mipi_dsi_get_drvdata(dsi);
int err;
err = mipi_dsi_detach(dsi);
if (err < 0)
dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
drm_panel_remove(&pinfo->base);
}
static const struct of_device_id tianma_fhd_video_of_match[] = {
{ .compatible = "tianma,fhd-video", .data = &tianma_fhd_video_panel_desc },
{ },
};
MODULE_DEVICE_TABLE(of, tianma_fhd_video_of_match);
static struct mipi_dsi_driver nt36672a_panel_driver = {
.driver = {
.name = "panel-tianma-nt36672a",
.of_match_table = tianma_fhd_video_of_match,
},
.probe = nt36672a_panel_probe,
.remove = nt36672a_panel_remove,
};
module_mipi_dsi_driver(nt36672a_panel_driver);
MODULE_AUTHOR("Sumit Semwal <[email protected]>");
MODULE_DESCRIPTION("NOVATEK NT36672A based MIPI-DSI LCD panel driver");
MODULE_LICENSE("GPL");
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