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linux/drivers/gpu/drm/panel/panel-novatek-nt36672a.c
Uwe Kleine-König 79abca2b39 drm/mipi-dsi: Make remove callback return void 
All implementations return 0 and the return value of mipi_dsi_drv_remove()
is ignored anyhow.

So change the prototype of the remove function to return no value. This
way driver authors are not tempted to assume that passing an error to
the upper layer is a good idea. All drivers are adapted accordingly.
There is no intended change of behaviour.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220708094922.1408248-4-u.kleine-koenig@pengutronix.de
2022-07-09 10:50:03 +02:00

720 lines
18 KiB
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2020 Linaro Ltd
* Author: Sumit Semwal <sumit.semwal@linaro.org>
*
* 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/of_device.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;
bool prepared;
};
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;
if (!pinfo->prepared)
return 0;
/* 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);
pinfo->prepared = false;
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;
if (pinfo->prepared)
return 0;
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);
pinfo->prepared = true;
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];
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");
for (i = 0; i < ARRAY_SIZE(pinfo->supplies); i++) {
ret = regulator_set_load(pinfo->supplies[i].consumer,
nt36672a_regulator_enable_loads[i]);
if (ret)
return dev_err_probe(dev, ret, "failed to set regulator enable loads\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 = drm_panel_unprepare(&pinfo->base);
if (err < 0)
dev_err(&dsi->dev, "failed to unprepare panel: %d\n", err);
err = drm_panel_disable(&pinfo->base);
if (err < 0)
dev_err(&dsi->dev, "failed to disable panel: %d\n", 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 void nt36672a_panel_shutdown(struct mipi_dsi_device *dsi)
{
struct nt36672a_panel *pinfo = mipi_dsi_get_drvdata(dsi);
drm_panel_disable(&pinfo->base);
drm_panel_unprepare(&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,
.shutdown = nt36672a_panel_shutdown,
};
module_mipi_dsi_driver(nt36672a_panel_driver);
MODULE_AUTHOR("Sumit Semwal <sumit.semwal@linaro.org>");
MODULE_DESCRIPTION("NOVATEK NT36672A based MIPI-DSI LCD panel driver");
MODULE_LICENSE("GPL");
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