Tool/software:
Hello TI
The SDK version I'm using is TDA4VM_SDK_10.05. I want to use the file psdkla/board-support/ti-linux-kernel-6.6.32+git-ti/drivers/gpu/drm/panel/panel-simple.c to configure the DSI.
However, there is no signal output from the DSI.The panel_simple_dsi_probe function has not been successfully probed either. The modified panel-simple.c is as follows.
/*
* Copyright (C) 2013, NVIDIA Corporation. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sub license,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/media-bus-format.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <video/display_timing.h>
#include <video/of_display_timing.h>
#include <video/videomode.h>
#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_edid.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_panel.h>
/**
* struct panel_desc - Describes a simple panel.
*/
struct panel_desc {
/**
* @modes: Pointer to array of fixed modes appropriate for this panel.
*
* If only one mode then this can just be the address of the mode.
* NOTE: cannot be used with "timings" and also if this is specified
* then you cannot override the mode in the device tree.
*/
const struct drm_display_mode *modes;
/** @num_modes: Number of elements in modes array. */
unsigned int num_modes;
/**
* @timings: Pointer to array of display timings
*
* NOTE: cannot be used with "modes" and also these will be used to
* validate a device tree override if one is present.
*/
const struct display_timing *timings;
/** @num_timings: Number of elements in timings array. */
unsigned int num_timings;
/** @bpc: Bits per color. */
unsigned int bpc;
/** @size: Structure containing the physical size of this panel. */
struct {
/**
* @size.width: Width (in mm) of the active display area.
*/
unsigned int width;
/**
* @size.height: Height (in mm) of the active display area.
*/
unsigned int height;
} size;
/** @delay: Structure containing various delay values for this panel. */
struct {
/**
* @delay.prepare: Time for the panel to become ready.
*
* The time (in milliseconds) that it takes for the panel to
* become ready and start receiving video data
*/
unsigned int prepare;
/**
* @delay.enable: Time for the panel to display a valid frame.
*
* The time (in milliseconds) that it takes for the panel to
* display the first valid frame after starting to receive
* video data.
*/
unsigned int enable;
/**
* @delay.disable: Time for the panel to turn the display off.
*
* The time (in milliseconds) that it takes for the panel to
* turn the display off (no content is visible).
*/
unsigned int disable;
/**
* @delay.unprepare: Time to power down completely.
*
* The time (in milliseconds) that it takes for the panel
* to power itself down completely.
*
* This time is used to prevent a future "prepare" from
* starting until at least this many milliseconds has passed.
* If at prepare time less time has passed since unprepare
* finished, the driver waits for the remaining time.
*/
unsigned int unprepare;
} delay;
/** @bus_format: See MEDIA_BUS_FMT_... defines. */
u32 bus_format;
/** @bus_flags: See DRM_BUS_FLAG_... defines. */
u32 bus_flags;
/** @connector_type: LVDS, eDP, DSI, DPI, etc. */
int connector_type;
};
struct panel_simple {
struct drm_panel base;
bool enabled;
bool prepared;
ktime_t unprepared_time;
const struct panel_desc *desc;
struct regulator *supply;
struct i2c_adapter *ddc;
struct gpio_desc *enable_gpio;
struct edid *edid;
struct drm_display_mode override_mode;
enum drm_panel_orientation orientation;
};
static inline struct panel_simple *to_panel_simple(struct drm_panel *panel)
{
return container_of(panel, struct panel_simple, base);
}
static unsigned int panel_simple_get_timings_modes(struct panel_simple *panel,
struct drm_connector *connector)
{
struct drm_display_mode *mode;
unsigned int i, num = 0;
for (i = 0; i < panel->desc->num_timings; i++) {
const struct display_timing *dt = &panel->desc->timings[i];
struct videomode vm;
videomode_from_timing(dt, &vm);
mode = drm_mode_create(connector->dev);
if (!mode) {
dev_err(panel->base.dev, "failed to add mode %ux%u\n",
dt->hactive.typ, dt->vactive.typ);
continue;
}
drm_display_mode_from_videomode(&vm, mode);
mode->type |= DRM_MODE_TYPE_DRIVER;
if (panel->desc->num_timings == 1)
mode->type |= DRM_MODE_TYPE_PREFERRED;
drm_mode_probed_add(connector, mode);
num++;
}
return num;
}
static unsigned int panel_simple_get_display_modes(struct panel_simple *panel,
struct drm_connector *connector)
{
struct drm_display_mode *mode;
unsigned int i, num = 0;
for (i = 0; i < panel->desc->num_modes; i++) {
const struct drm_display_mode *m = &panel->desc->modes[i];
mode = drm_mode_duplicate(connector->dev, m);
if (!mode) {
dev_err(panel->base.dev, "failed to add mode %ux%u@%u\n",
m->hdisplay, m->vdisplay,
drm_mode_vrefresh(m));
continue;
}
mode->type |= DRM_MODE_TYPE_DRIVER;
if (panel->desc->num_modes == 1)
mode->type |= DRM_MODE_TYPE_PREFERRED;
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
num++;
}
return num;
}
static int panel_simple_get_non_edid_modes(struct panel_simple *panel,
struct drm_connector *connector)
{
struct drm_display_mode *mode;
bool has_override = panel->override_mode.type;
unsigned int num = 0;
if (!panel->desc)
return 0;
if (has_override) {
mode = drm_mode_duplicate(connector->dev,
&panel->override_mode);
if (mode) {
drm_mode_probed_add(connector, mode);
num = 1;
} else {
dev_err(panel->base.dev, "failed to add override mode\n");
}
}
/* Only add timings if override was not there or failed to validate */
if (num == 0 && panel->desc->num_timings)
num = panel_simple_get_timings_modes(panel, connector);
/*
* Only add fixed modes if timings/override added no mode.
*
* We should only ever have either the display timings specified
* or a fixed mode. Anything else is rather bogus.
*/
WARN_ON(panel->desc->num_timings && panel->desc->num_modes);
if (num == 0)
num = panel_simple_get_display_modes(panel, connector);
connector->display_info.bpc = panel->desc->bpc;
connector->display_info.width_mm = panel->desc->size.width;
connector->display_info.height_mm = panel->desc->size.height;
if (panel->desc->bus_format)
drm_display_info_set_bus_formats(&connector->display_info,
&panel->desc->bus_format, 1);
connector->display_info.bus_flags = panel->desc->bus_flags;
return num;
}
static void panel_simple_wait(ktime_t start_ktime, unsigned int min_ms)
{
ktime_t now_ktime, min_ktime;
if (!min_ms)
return;
min_ktime = ktime_add(start_ktime, ms_to_ktime(min_ms));
now_ktime = ktime_get_boottime();
if (ktime_before(now_ktime, min_ktime))
msleep(ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1);
}
static int panel_simple_disable(struct drm_panel *panel)
{
struct panel_simple *p = to_panel_simple(panel);
if (!p->enabled)
return 0;
if (p->desc->delay.disable)
msleep(p->desc->delay.disable);
p->enabled = false;
return 0;
}
static int panel_simple_suspend(struct device *dev)
{
struct panel_simple *p = dev_get_drvdata(dev);
gpiod_set_value_cansleep(p->enable_gpio, 0);
regulator_disable(p->supply);
p->unprepared_time = ktime_get_boottime();
kfree(p->edid);
p->edid = NULL;
return 0;
}
static int panel_simple_unprepare(struct drm_panel *panel)
{
struct panel_simple *p = to_panel_simple(panel);
int ret;
/* Unpreparing when already unprepared is a no-op */
if (!p->prepared)
return 0;
pm_runtime_mark_last_busy(panel->dev);
ret = pm_runtime_put_autosuspend(panel->dev);
if (ret < 0)
return ret;
p->prepared = false;
return 0;
}
static int panel_simple_resume(struct device *dev)
{
struct panel_simple *p = dev_get_drvdata(dev);
int err;
panel_simple_wait(p->unprepared_time, p->desc->delay.unprepare);
err = regulator_enable(p->supply);
if (err < 0) {
dev_err(dev, "failed to enable supply: %d\n", err);
return err;
}
gpiod_set_value_cansleep(p->enable_gpio, 1);
if (p->desc->delay.prepare)
msleep(p->desc->delay.prepare);
return 0;
}
static int panel_simple_prepare(struct drm_panel *panel)
{
struct panel_simple *p = to_panel_simple(panel);
int ret;
/* Preparing when already prepared is a no-op */
if (p->prepared)
return 0;
ret = pm_runtime_get_sync(panel->dev);
if (ret < 0) {
pm_runtime_put_autosuspend(panel->dev);
return ret;
}
p->prepared = true;
return 0;
}
static int panel_simple_enable(struct drm_panel *panel)
{
struct panel_simple *p = to_panel_simple(panel);
if (p->enabled)
return 0;
if (p->desc->delay.enable)
msleep(p->desc->delay.enable);
p->enabled = true;
return 0;
}
static int panel_simple_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct panel_simple *p = to_panel_simple(panel);
int num = 0;
/* probe EDID if a DDC bus is available */
if (p->ddc) {
pm_runtime_get_sync(panel->dev);
if (!p->edid)
p->edid = drm_get_edid(connector, p->ddc);
if (p->edid)
num += drm_add_edid_modes(connector, p->edid);
pm_runtime_mark_last_busy(panel->dev);
pm_runtime_put_autosuspend(panel->dev);
}
/* add hard-coded panel modes */
num += panel_simple_get_non_edid_modes(p, connector);
/*
* TODO: Remove once all drm drivers call
* drm_connector_set_orientation_from_panel()
*/
drm_connector_set_panel_orientation(connector, p->orientation);
return num;
}
static int panel_simple_get_timings(struct drm_panel *panel,
unsigned int num_timings,
struct display_timing *timings)
{
struct panel_simple *p = to_panel_simple(panel);
unsigned int i;
if (p->desc->num_timings < num_timings)
num_timings = p->desc->num_timings;
if (timings)
for (i = 0; i < num_timings; i++)
timings[i] = p->desc->timings[i];
return p->desc->num_timings;
}
static enum drm_panel_orientation panel_simple_get_orientation(struct drm_panel *panel)
{
struct panel_simple *p = to_panel_simple(panel);
return p->orientation;
}
static const struct drm_panel_funcs panel_simple_funcs = {
.disable = panel_simple_disable,
.unprepare = panel_simple_unprepare,
.prepare = panel_simple_prepare,
.enable = panel_simple_enable,
.get_modes = panel_simple_get_modes,
.get_orientation = panel_simple_get_orientation,
.get_timings = panel_simple_get_timings,
};
static struct panel_desc panel_dpi;
static int panel_dpi_probe(struct device *dev,
struct panel_simple *panel)
{
struct display_timing *timing;
const struct device_node *np;
struct panel_desc *desc;
unsigned int bus_flags;
struct videomode vm;
int ret;
np = dev->of_node;
desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
if (!desc)
return -ENOMEM;
timing = devm_kzalloc(dev, sizeof(*timing), GFP_KERNEL);
if (!timing)
return -ENOMEM;
ret = of_get_display_timing(np, "panel-timing", timing);
if (ret < 0) {
dev_err(dev, "%pOF: no panel-timing node found for \"panel-dpi\" binding\n",
np);
return ret;
}
desc->timings = timing;
desc->num_timings = 1;
of_property_read_u32(np, "width-mm", &desc->size.width);
of_property_read_u32(np, "height-mm", &desc->size.height);
/* Extract bus_flags from display_timing */
bus_flags = 0;
vm.flags = timing->flags;
drm_bus_flags_from_videomode(&vm, &bus_flags);
desc->bus_flags = bus_flags;
/* We do not know the connector for the DT node, so guess it */
desc->connector_type = DRM_MODE_CONNECTOR_DPI;
panel->desc = desc;
return 0;
}
#define PANEL_SIMPLE_BOUNDS_CHECK(to_check, bounds, field) \
(to_check->field.typ >= bounds->field.min && \
to_check->field.typ <= bounds->field.max)
static void panel_simple_parse_panel_timing_node(struct device *dev,
struct panel_simple *panel,
const struct display_timing *ot)
{
const struct panel_desc *desc = panel->desc;
struct videomode vm;
unsigned int i;
if (WARN_ON(desc->num_modes)) {
dev_err(dev, "Reject override mode: panel has a fixed mode\n");
return;
}
if (WARN_ON(!desc->num_timings)) {
dev_err(dev, "Reject override mode: no timings specified\n");
return;
}
for (i = 0; i < panel->desc->num_timings; i++) {
const struct display_timing *dt = &panel->desc->timings[i];
if (!PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, hactive) ||
!PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, hfront_porch) ||
!PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, hback_porch) ||
!PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, hsync_len) ||
!PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, vactive) ||
!PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, vfront_porch) ||
!PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, vback_porch) ||
!PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, vsync_len))
continue;
if (ot->flags != dt->flags)
continue;
videomode_from_timing(ot, &vm);
drm_display_mode_from_videomode(&vm, &panel->override_mode);
panel->override_mode.type |= DRM_MODE_TYPE_DRIVER |
DRM_MODE_TYPE_PREFERRED;
break;
}
if (WARN_ON(!panel->override_mode.type))
dev_err(dev, "Reject override mode: No display_timing found\n");
}
static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
{
struct panel_simple *panel;
struct display_timing dt;
struct device_node *ddc;
int connector_type;
u32 bus_flags;
int err;
panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
if (!panel)
return -ENOMEM;
panel->enabled = false;
panel->desc = desc;
panel->supply = devm_regulator_get(dev, "power");
if (IS_ERR(panel->supply))
return PTR_ERR(panel->supply);
panel->enable_gpio = devm_gpiod_get_optional(dev, "enable",
GPIOD_OUT_LOW);
if (IS_ERR(panel->enable_gpio))
return dev_err_probe(dev, PTR_ERR(panel->enable_gpio),
"failed to request GPIO\n");
err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation);
if (err) {
dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
return err;
}
ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
if (ddc) {
panel->ddc = of_find_i2c_adapter_by_node(ddc);
of_node_put(ddc);
if (!panel->ddc)
return -EPROBE_DEFER;
}
if (desc == &panel_dpi) {
/* Handle the generic panel-dpi binding */
err = panel_dpi_probe(dev, panel);
if (err)
goto free_ddc;
desc = panel->desc;
} else {
if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
panel_simple_parse_panel_timing_node(dev, panel, &dt);
}
connector_type = desc->connector_type;
/* Catch common mistakes for panels. */
switch (connector_type) {
case 0:
dev_warn(dev, "Specify missing connector_type\n");
connector_type = DRM_MODE_CONNECTOR_DPI;
break;
case DRM_MODE_CONNECTOR_LVDS:
WARN_ON(desc->bus_flags &
~(DRM_BUS_FLAG_DE_LOW |
DRM_BUS_FLAG_DE_HIGH |
DRM_BUS_FLAG_DATA_MSB_TO_LSB |
DRM_BUS_FLAG_DATA_LSB_TO_MSB));
WARN_ON(desc->bus_format != MEDIA_BUS_FMT_RGB666_1X7X3_SPWG &&
desc->bus_format != MEDIA_BUS_FMT_RGB888_1X7X4_SPWG &&
desc->bus_format != MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA);
WARN_ON(desc->bus_format == MEDIA_BUS_FMT_RGB666_1X7X3_SPWG &&
desc->bpc != 6);
WARN_ON((desc->bus_format == MEDIA_BUS_FMT_RGB888_1X7X4_SPWG ||
desc->bus_format == MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA) &&
desc->bpc != 8);
break;
case DRM_MODE_CONNECTOR_eDP:
dev_warn(dev, "eDP panels moved to panel-edp\n");
err = -EINVAL;
goto free_ddc;
case DRM_MODE_CONNECTOR_DSI:
if (desc->bpc != 6 && desc->bpc != 8)
dev_warn(dev, "Expected bpc in {6,8} but got: %u\n", desc->bpc);
break;
case DRM_MODE_CONNECTOR_DPI:
bus_flags = DRM_BUS_FLAG_DE_LOW |
DRM_BUS_FLAG_DE_HIGH |
DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE |
DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
DRM_BUS_FLAG_DATA_MSB_TO_LSB |
DRM_BUS_FLAG_DATA_LSB_TO_MSB |
DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE |
DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE;
if (desc->bus_flags & ~bus_flags)
dev_warn(dev, "Unexpected bus_flags(%d)\n", desc->bus_flags & ~bus_flags);
if (!(desc->bus_flags & bus_flags))
dev_warn(dev, "Specify missing bus_flags\n");
if (desc->bus_format == 0)
dev_warn(dev, "Specify missing bus_format\n");
if (desc->bpc != 6 && desc->bpc != 8)
dev_warn(dev, "Expected bpc in {6,8} but got: %u\n", desc->bpc);
break;
default:
dev_warn(dev, "Specify a valid connector_type: %d\n", desc->connector_type);
connector_type = DRM_MODE_CONNECTOR_DPI;
break;
}
dev_set_drvdata(dev, panel);
/*
* We use runtime PM for prepare / unprepare since those power the panel
* on and off and those can be very slow operations. This is important
* to optimize powering the panel on briefly to read the EDID before
* fully enabling the panel.
*/
pm_runtime_enable(dev);
pm_runtime_set_autosuspend_delay(dev, 1000);
pm_runtime_use_autosuspend(dev);
drm_panel_init(&panel->base, dev, &panel_simple_funcs, connector_type);
err = drm_panel_of_backlight(&panel->base);
if (err) {
dev_err_probe(dev, err, "Could not find backlight\n");
goto disable_pm_runtime;
}
drm_panel_add(&panel->base);
return 0;
disable_pm_runtime:
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_disable(dev);
free_ddc:
if (panel->ddc)
put_device(&panel->ddc->dev);
return err;
}
static void panel_simple_remove(struct device *dev)
{
struct panel_simple *panel = dev_get_drvdata(dev);
drm_panel_remove(&panel->base);
drm_panel_disable(&panel->base);
drm_panel_unprepare(&panel->base);
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_disable(dev);
if (panel->ddc)
put_device(&panel->ddc->dev);
}
static void panel_simple_shutdown(struct device *dev)
{
struct panel_simple *panel = dev_get_drvdata(dev);
drm_panel_disable(&panel->base);
drm_panel_unprepare(&panel->base);
}
static const struct display_timing innolux_g101ice_l01_timing = {
.pixelclock = { 60400000, 71100000, 74700000 },
.hactive = { 1280, 1280, 1280 },
.hfront_porch = { 30, 60, 70 },
.hback_porch = { 30, 60, 70 },
.hsync_len = { 22, 40, 60 },
.vactive = { 800, 800, 800 },
.vfront_porch = { 3, 8, 14 },
.vback_porch = { 3, 8, 14 },
.vsync_len = { 4, 7, 12 },
.flags = DISPLAY_FLAGS_DE_HIGH,
};
static const struct panel_desc innolux_g101ice_l01 = {
.timings = &innolux_g101ice_l01_timing,
.num_timings = 1,
.bpc = 8,
.size = {
.width = 217,
.height = 135,
},
.delay = {
.enable = 200,
.disable = 200,
},
.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
.bus_flags = DRM_BUS_FLAG_DE_HIGH,
.connector_type = DRM_MODE_CONNECTOR_LVDS,
};
static const struct of_device_id platform_of_match[] = {
{
.compatible = "innolux,g101ice-l01",
.data = &innolux_g101ice_l01
}, {
/* sentinel */
}
};
MODULE_DEVICE_TABLE(of, platform_of_match);
static int panel_simple_platform_probe(struct platform_device *pdev)
{
const struct panel_desc *desc;
desc = of_device_get_match_data(&pdev->dev);
if (!desc)
return -ENODEV;
return panel_simple_probe(&pdev->dev, desc);
}
static void panel_simple_platform_remove(struct platform_device *pdev)
{
panel_simple_remove(&pdev->dev);
}
static void panel_simple_platform_shutdown(struct platform_device *pdev)
{
panel_simple_shutdown(&pdev->dev);
}
static const struct dev_pm_ops panel_simple_pm_ops = {
SET_RUNTIME_PM_OPS(panel_simple_suspend, panel_simple_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
static struct platform_driver panel_simple_platform_driver = {
.driver = {
.name = "panel-simple",
.of_match_table = platform_of_match,
.pm = &panel_simple_pm_ops,
},
.probe = panel_simple_platform_probe,
.remove_new = panel_simple_platform_remove,
.shutdown = panel_simple_platform_shutdown,
};
struct panel_desc_dsi {
struct panel_desc desc;
unsigned long flags;
enum mipi_dsi_pixel_format format;
unsigned int lanes;
};
static const struct drm_display_mode lg_ld070wx3_sl01_mode = {
.clock = 71000,
.hdisplay = 800,
.hsync_start = 800 + 32,
.hsync_end = 800 + 32 + 1,
.htotal = 800 + 32 + 1 + 57,
.vdisplay = 1280,
.vsync_start = 1280 + 28,
.vsync_end = 1280 + 28 + 1,
.vtotal = 1280 + 28 + 1 + 14,
};
static const struct panel_desc_dsi lg_ld070wx3_sl01 = {
.desc = {
.modes = &lg_ld070wx3_sl01_mode,
.num_modes = 1,
.bpc = 8,
.size = {
.width = 94,
.height = 151,
},
.connector_type = DRM_MODE_CONNECTOR_DSI,
},
.flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_CLOCK_NON_CONTINUOUS,
.format = MIPI_DSI_FMT_RGB888,
.lanes = 4,
};
static const struct of_device_id dsi_of_match[] = {
{
.compatible = "lg,ld070wx3-sl01",
.data = &lg_ld070wx3_sl01
}, {
/* sentinel */
}
};
MODULE_DEVICE_TABLE(of, dsi_of_match);
static int panel_simple_dsi_probe(struct mipi_dsi_device *dsi)
{
const struct panel_desc_dsi *desc;
int err;
printk("panel_simple_dsi_probe 941 START\n");
desc = of_device_get_match_data(&dsi->dev);
if (!desc)
return -ENODEV;
err = panel_simple_probe(&dsi->dev, &desc->desc);
if (err < 0)
return err;
dsi->mode_flags = desc->flags;
dsi->format = desc->format;
dsi->lanes = desc->lanes;
err = mipi_dsi_attach(dsi);
if (err) {
struct panel_simple *panel = mipi_dsi_get_drvdata(dsi);
drm_panel_remove(&panel->base);
}
printk("panel_simple_dsi_probe 941 end\n");
return err;
}
static void panel_simple_dsi_remove(struct mipi_dsi_device *dsi)
{
int err;
err = mipi_dsi_detach(dsi);
if (err < 0)
dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
panel_simple_remove(&dsi->dev);
}
static void panel_simple_dsi_shutdown(struct mipi_dsi_device *dsi)
{
panel_simple_shutdown(&dsi->dev);
}
static struct mipi_dsi_driver panel_simple_dsi_driver = {
.driver = {
.name = "panel-simple-dsi",
.of_match_table = dsi_of_match,
.pm = &panel_simple_pm_ops,
},
.probe = panel_simple_dsi_probe,
.remove = panel_simple_dsi_remove,
.shutdown = panel_simple_dsi_shutdown,
};
static int __init panel_simple_init(void)
{
int err;
err = platform_driver_register(&panel_simple_platform_driver);
if (err < 0)
return err;
if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
err = mipi_dsi_driver_register(&panel_simple_dsi_driver);
if (err < 0)
goto err_did_platform_register;
}
return 0;
err_did_platform_register:
platform_driver_unregister(&panel_simple_platform_driver);
return err;
}
module_init(panel_simple_init);
static void __exit panel_simple_exit(void)
{
if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
mipi_dsi_driver_unregister(&panel_simple_dsi_driver);
platform_driver_unregister(&panel_simple_platform_driver);
}
module_exit(panel_simple_exit);
MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
MODULE_DESCRIPTION("DRM Driver for Simple Panels");
MODULE_LICENSE("GPL and additional rights");
I only kept ".compatible = "innolux,g101ice-l01"". I also didn't get any log output when printing logs inside the panel_simple_dsi_probe function.
When using the command zcat /proc/config.gz | grep CONFIG_DRM_PANEL_SIMPLE, it shows that CONFIG_DRM_PANEL_SIMPLE=m. The following is the dmesg information.
Could you please help me figure out how to successfully probe panel-simple.c and enable the DSI to have signal output?
Regards,
FuGuojia
