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linuxdebug/drivers/gpu/drm/panel/panel-edp.c

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null pointer error
2024-07-16 15:50:57 +02:00
/*
* 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/debugfs.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/iopoll.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/display/drm_dp_aux_bus.h>
#include <drm/display/drm_dp_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_edid.h>
#include <drm/drm_panel.h>
/**
* struct panel_delay - Describes delays for a simple panel.
*/
struct panel_delay {
/**
* @hpd_reliable: Time for HPD to be reliable
*
* The time (in milliseconds) that it takes after powering the panel
* before the HPD signal is reliable. Ideally this is 0 but some panels,
* board designs, or bad pulldown configs can cause a glitch here.
*
* NOTE: on some old panel data this number appears to be much too big.
* Presumably some old panels simply didn't have HPD hooked up and put
* the hpd_absent here because this field predates the
* hpd_absent. While that works, it's non-ideal.
*/
unsigned int hpd_reliable;
/**
* @hpd_absent: Time to wait if HPD isn't hooked up.
*
* Add this to the prepare delay if we know Hot Plug Detect isn't used.
*
* This is T3-max on eDP timing diagrams or the delay from power on
* until HPD is guaranteed to be asserted.
*/
unsigned int hpd_absent;
/**
* @prepare_to_enable: Time between prepare and enable.
*
* The minimum time, in milliseconds, that needs to have passed
* between when prepare finished and enable may begin. If at
* enable time less time has passed since prepare finished,
* the driver waits for the remaining time.
*
* If a fixed enable delay is also specified, we'll start
* counting before delaying for the fixed delay.
*
* If a fixed prepare delay is also specified, we won't start
* counting until after the fixed delay. We can't overlap this
* fixed delay with the min time because the fixed delay
* doesn't happen at the end of the function if a HPD GPIO was
* specified.
*
* In other words:
* prepare()
* ...
* // do fixed prepare delay
* // wait for HPD GPIO if applicable
* // start counting for prepare_to_enable
*
* enable()
* // do fixed enable delay
* // enforce prepare_to_enable min time
*
* This is not specified in a standard way on eDP timing diagrams.
* It is effectively the time from HPD going high till you can
* turn on the backlight.
*/
unsigned int prepare_to_enable;
/**
* @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.
*
* This is (T6-min + max(T7-max, T8-min)) on eDP timing diagrams or
* the delay after link training finishes until we can turn the
* backlight on and see valid data.
*/
unsigned int enable;
/**
* @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).
*
* This is T9-min (delay from backlight off to end of valid video
* data) on eDP timing diagrams. It is not common to set.
*/
unsigned int disable;
/**
* @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.
*
* This is T12-min on eDP timing diagrams.
*/
unsigned int unprepare;
};
/**
* 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 panel_delay delay;
};
/**
* struct edp_panel_entry - Maps panel ID to delay / panel name.
*/
struct edp_panel_entry {
/** @panel_id: 32-bit ID for panel, encoded with drm_edid_encode_panel_id(). */
u32 panel_id;
/** @delay: The power sequencing delays needed for this panel. */
const struct panel_delay *delay;
/** @name: Name of this panel (for printing to logs). */
const char *name;
};
struct panel_edp {
struct drm_panel base;
bool enabled;
bool no_hpd;
bool prepared;
ktime_t prepared_time;
ktime_t unprepared_time;
const struct panel_desc *desc;
struct regulator *supply;
struct i2c_adapter *ddc;
struct drm_dp_aux *aux;
struct gpio_desc *enable_gpio;
struct gpio_desc *hpd_gpio;
const struct edp_panel_entry *detected_panel;
struct edid *edid;
struct drm_display_mode override_mode;
enum drm_panel_orientation orientation;
};
static inline struct panel_edp *to_panel_edp(struct drm_panel *panel)
{
return container_of(panel, struct panel_edp, base);
}
static unsigned int panel_edp_get_timings_modes(struct panel_edp *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_edp_get_display_modes(struct panel_edp *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_edp_get_non_edid_modes(struct panel_edp *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_edp_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_edp_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;
return num;
}
static void panel_edp_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();
if (ktime_before(now_ktime, min_ktime))
msleep(ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1);
}
static int panel_edp_disable(struct drm_panel *panel)
{
struct panel_edp *p = to_panel_edp(panel);
if (!p->enabled)
return 0;
if (p->desc->delay.disable)
msleep(p->desc->delay.disable);
p->enabled = false;
return 0;
}
static int panel_edp_suspend(struct device *dev)
{
struct panel_edp *p = dev_get_drvdata(dev);
gpiod_set_value_cansleep(p->enable_gpio, 0);
regulator_disable(p->supply);
p->unprepared_time = ktime_get();
return 0;
}
static int panel_edp_unprepare(struct drm_panel *panel)
{
struct panel_edp *p = to_panel_edp(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_edp_get_hpd_gpio(struct device *dev, struct panel_edp *p)
{
p->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN);
if (IS_ERR(p->hpd_gpio))
return dev_err_probe(dev, PTR_ERR(p->hpd_gpio),
"failed to get 'hpd' GPIO\n");
return 0;
}
static bool panel_edp_can_read_hpd(struct panel_edp *p)
{
return !p->no_hpd && (p->hpd_gpio || (p->aux && p->aux->wait_hpd_asserted));
}
static int panel_edp_prepare_once(struct panel_edp *p)
{
struct device *dev = p->base.dev;
unsigned int delay;
int err;
int hpd_asserted;
unsigned long hpd_wait_us;
panel_edp_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);
delay = p->desc->delay.hpd_reliable;
if (p->no_hpd)
delay = max(delay, p->desc->delay.hpd_absent);
if (delay)
msleep(delay);
if (panel_edp_can_read_hpd(p)) {
if (p->desc->delay.hpd_absent)
hpd_wait_us = p->desc->delay.hpd_absent * 1000UL;
else
hpd_wait_us = 2000000;
if (p->hpd_gpio) {
err = readx_poll_timeout(gpiod_get_value_cansleep,
p->hpd_gpio, hpd_asserted,
hpd_asserted, 1000, hpd_wait_us);
if (hpd_asserted < 0)
err = hpd_asserted;
} else {
err = p->aux->wait_hpd_asserted(p->aux, hpd_wait_us);
}
if (err) {
if (err != -ETIMEDOUT)
dev_err(dev,
"error waiting for hpd GPIO: %d\n", err);
goto error;
}
}
p->prepared_time = ktime_get();
return 0;
error:
gpiod_set_value_cansleep(p->enable_gpio, 0);
regulator_disable(p->supply);
p->unprepared_time = ktime_get();
return err;
}
/*
* Some panels simply don't always come up and need to be power cycled to
* work properly. We'll allow for a handful of retries.
*/
#define MAX_PANEL_PREPARE_TRIES 5
static int panel_edp_resume(struct device *dev)
{
struct panel_edp *p = dev_get_drvdata(dev);
int ret;
int try;
for (try = 0; try < MAX_PANEL_PREPARE_TRIES; try++) {
ret = panel_edp_prepare_once(p);
if (ret != -ETIMEDOUT)
break;
}
if (ret == -ETIMEDOUT)
dev_err(dev, "Prepare timeout after %d tries\n", try);
else if (try)
dev_warn(dev, "Prepare needed %d retries\n", try);
return ret;
}
static int panel_edp_prepare(struct drm_panel *panel)
{
struct panel_edp *p = to_panel_edp(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_edp_enable(struct drm_panel *panel)
{
struct panel_edp *p = to_panel_edp(panel);
unsigned int delay;
if (p->enabled)
return 0;
delay = p->desc->delay.enable;
/*
* If there is a "prepare_to_enable" delay then that's supposed to be
* the delay from HPD going high until we can turn the backlight on.
* However, we can only count this if HPD is readable by the panel
* driver.
*
* If we aren't handling the HPD pin ourselves then the best we
* can do is assume that HPD went high immediately before we were
* called (and link training took zero time). Note that "no-hpd"
* actually counts as handling HPD ourselves since we're doing the
* worst case delay (in prepare) ourselves.
*
* NOTE: if we ever end up in this "if" statement then we're
* guaranteed that the panel_edp_wait() call below will do no delay.
* It already handles that case, though, so we don't need any special
* code for it.
*/
if (p->desc->delay.prepare_to_enable &&
!panel_edp_can_read_hpd(p) && !p->no_hpd)
delay = max(delay, p->desc->delay.prepare_to_enable);
if (delay)
msleep(delay);
panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable);
p->enabled = true;
return 0;
}
static int panel_edp_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct panel_edp *p = to_panel_edp(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. Don't call this if there are no timings
* and no modes (the generic edp-panel case) because it will clobber
* the display_info that was already set by drm_add_edid_modes().
*/
if (p->desc->num_timings || p->desc->num_modes)
num += panel_edp_get_non_edid_modes(p, connector);
else if (!num)
dev_warn(p->base.dev, "No display modes\n");
/*
* 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_edp_get_timings(struct drm_panel *panel,
unsigned int num_timings,
struct display_timing *timings)
{
struct panel_edp *p = to_panel_edp(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_edp_get_orientation(struct drm_panel *panel)
{
struct panel_edp *p = to_panel_edp(panel);
return p->orientation;
}
static int detected_panel_show(struct seq_file *s, void *data)
{
struct drm_panel *panel = s->private;
struct panel_edp *p = to_panel_edp(panel);
if (IS_ERR(p->detected_panel))
seq_puts(s, "UNKNOWN\n");
else if (!p->detected_panel)
seq_puts(s, "HARDCODED\n");
else
seq_printf(s, "%s\n", p->detected_panel->name);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(detected_panel);
static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root)
{
debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops);
}
static const struct drm_panel_funcs panel_edp_funcs = {
.disable = panel_edp_disable,
.unprepare = panel_edp_unprepare,
.prepare = panel_edp_prepare,
.enable = panel_edp_enable,
.get_modes = panel_edp_get_modes,
.get_orientation = panel_edp_get_orientation,
.get_timings = panel_edp_get_timings,
.debugfs_init = panel_edp_debugfs_init,
};
#define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \
(to_check->field.typ >= bounds->field.min && \
to_check->field.typ <= bounds->field.max)
static void panel_edp_parse_panel_timing_node(struct device *dev,
struct panel_edp *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_EDP_BOUNDS_CHECK(ot, dt, hactive) ||
!PANEL_EDP_BOUNDS_CHECK(ot, dt, hfront_porch) ||
!PANEL_EDP_BOUNDS_CHECK(ot, dt, hback_porch) ||
!PANEL_EDP_BOUNDS_CHECK(ot, dt, hsync_len) ||
!PANEL_EDP_BOUNDS_CHECK(ot, dt, vactive) ||
!PANEL_EDP_BOUNDS_CHECK(ot, dt, vfront_porch) ||
!PANEL_EDP_BOUNDS_CHECK(ot, dt, vback_porch) ||
!PANEL_EDP_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 const struct edp_panel_entry *find_edp_panel(u32 panel_id);
static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)
{
struct panel_desc *desc;
u32 panel_id;
char vend[4];
u16 product_id;
u32 reliable_ms = 0;
u32 absent_ms = 0;
int ret;
desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
if (!desc)
return -ENOMEM;
panel->desc = desc;
/*
* Read the dts properties for the initial probe. These are used by
* the runtime resume code which will get called by the
* pm_runtime_get_sync() call below.
*/
of_property_read_u32(dev->of_node, "hpd-reliable-delay-ms", &reliable_ms);
desc->delay.hpd_reliable = reliable_ms;
of_property_read_u32(dev->of_node, "hpd-absent-delay-ms", &absent_ms);
desc->delay.hpd_absent = absent_ms;
/* Power the panel on so we can read the EDID */
ret = pm_runtime_get_sync(dev);
if (ret < 0) {
dev_err(dev, "Couldn't power on panel to read EDID: %d\n", ret);
goto exit;
}
panel_id = drm_edid_get_panel_id(panel->ddc);
if (!panel_id) {
dev_err(dev, "Couldn't identify panel via EDID\n");
ret = -EIO;
goto exit;
}
drm_edid_decode_panel_id(panel_id, vend, &product_id);
panel->detected_panel = find_edp_panel(panel_id);
/*
* We're using non-optimized timings and want it really obvious that
* someone needs to add an entry to the table, so we'll do a WARN_ON
* splat.
*/
if (WARN_ON(!panel->detected_panel)) {
dev_warn(dev,
"Unknown panel %s %#06x, using conservative timings\n",
vend, product_id);
/*
* It's highly likely that the panel will work if we use very
* conservative timings, so let's do that. We already know that
* the HPD-related delays must have worked since we got this
* far, so we really just need the "unprepare" / "enable"
* delays. We don't need "prepare_to_enable" since that
* overlaps the "enable" delay anyway.
*
* Nearly all panels have a "unprepare" delay of 500 ms though
* there are a few with 1000. Let's stick 2000 in just to be
* super conservative.
*
* An "enable" delay of 80 ms seems the most common, but we'll
* throw in 200 ms to be safe.
*/
desc->delay.unprepare = 2000;
desc->delay.enable = 200;
panel->detected_panel = ERR_PTR(-EINVAL);
} else {
dev_info(dev, "Detected %s %s (%#06x)\n",
vend, panel->detected_panel->name, product_id);
/* Update the delay; everything else comes from EDID */
desc->delay = *panel->detected_panel->delay;
}
ret = 0;
exit:
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
return ret;
}
static int panel_edp_probe(struct device *dev, const struct panel_desc *desc,
struct drm_dp_aux *aux)
{
struct panel_edp *panel;
struct display_timing dt;
struct device_node *ddc;
int err;
panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
if (!panel)
return -ENOMEM;
panel->enabled = false;
panel->prepared_time = 0;
panel->desc = desc;
panel->aux = aux;
panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd");
if (!panel->no_hpd) {
err = panel_edp_get_hpd_gpio(dev, panel);
if (err)
return err;
}
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;
} else if (aux) {
panel->ddc = &aux->ddc;
}
if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
panel_edp_parse_panel_timing_node(dev, panel, &dt);
dev_set_drvdata(dev, panel);
drm_panel_init(&panel->base, dev, &panel_edp_funcs, DRM_MODE_CONNECTOR_eDP);
err = drm_panel_of_backlight(&panel->base);
if (err)
goto err_finished_ddc_init;
/*
* 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);
if (of_device_is_compatible(dev->of_node, "edp-panel")) {
err = generic_edp_panel_probe(dev, panel);
if (err) {
dev_err_probe(dev, err,
"Couldn't detect panel nor find a fallback\n");
goto err_finished_pm_runtime;
}
/* generic_edp_panel_probe() replaces desc in the panel */
desc = panel->desc;
} else if (desc->bpc != 6 && desc->bpc != 8 && desc->bpc != 10) {
dev_warn(dev, "Expected bpc in {6,8,10} but got: %u\n", desc->bpc);
}
if (!panel->base.backlight && panel->aux) {
pm_runtime_get_sync(dev);
err = drm_panel_dp_aux_backlight(&panel->base, panel->aux);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
if (err)
goto err_finished_pm_runtime;
}
drm_panel_add(&panel->base);
return 0;
err_finished_pm_runtime:
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_disable(dev);
err_finished_ddc_init:
if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
put_device(&panel->ddc->dev);
return err;
}
static int panel_edp_remove(struct device *dev)
{
struct panel_edp *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 && (!panel->aux || panel->ddc != &panel->aux->ddc))
put_device(&panel->ddc->dev);
kfree(panel->edid);
panel->edid = NULL;
return 0;
}
static void panel_edp_shutdown(struct device *dev)
{
struct panel_edp *panel = dev_get_drvdata(dev);
drm_panel_disable(&panel->base);
drm_panel_unprepare(&panel->base);
}
static const struct display_timing auo_b101ean01_timing = {
.pixelclock = { 65300000, 72500000, 75000000 },
.hactive = { 1280, 1280, 1280 },
.hfront_porch = { 18, 119, 119 },
.hback_porch = { 21, 21, 21 },
.hsync_len = { 32, 32, 32 },
.vactive = { 800, 800, 800 },
.vfront_porch = { 4, 4, 4 },
.vback_porch = { 8, 8, 8 },
.vsync_len = { 18, 20, 20 },
};
static const struct panel_desc auo_b101ean01 = {
.timings = &auo_b101ean01_timing,
.num_timings = 1,
.bpc = 6,
.size = {
.width = 217,
.height = 136,
},
};
static const struct drm_display_mode auo_b116xak01_mode = {
.clock = 69300,
.hdisplay = 1366,
.hsync_start = 1366 + 48,
.hsync_end = 1366 + 48 + 32,
.htotal = 1366 + 48 + 32 + 10,
.vdisplay = 768,
.vsync_start = 768 + 4,
.vsync_end = 768 + 4 + 6,
.vtotal = 768 + 4 + 6 + 15,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
};
static const struct panel_desc auo_b116xak01 = {
.modes = &auo_b116xak01_mode,
.num_modes = 1,
.bpc = 6,
.size = {
.width = 256,
.height = 144,
},
.delay = {
.hpd_absent = 200,
},
};
static const struct drm_display_mode auo_b116xw03_mode = {
.clock = 70589,
.hdisplay = 1366,
.hsync_start = 1366 + 40,
.hsync_end = 1366 + 40 + 40,
.htotal = 1366 + 40 + 40 + 32,
.vdisplay = 768,
.vsync_start = 768 + 10,
.vsync_end = 768 + 10 + 12,
.vtotal = 768 + 10 + 12 + 6,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
};
static const struct panel_desc auo_b116xw03 = {
.modes = &auo_b116xw03_mode,
.num_modes = 1,
.bpc = 6,
.size = {
.width = 256,
.height = 144,
},
.delay = {
.enable = 400,
},
};
static const struct drm_display_mode auo_b133han05_mode = {
.clock = 142600,
.hdisplay = 1920,
.hsync_start = 1920 + 58,
.hsync_end = 1920 + 58 + 42,
.htotal = 1920 + 58 + 42 + 60,
.vdisplay = 1080,
.vsync_start = 1080 + 3,
.vsync_end = 1080 + 3 + 5,
.vtotal = 1080 + 3 + 5 + 54,
};
static const struct panel_desc auo_b133han05 = {
.modes = &auo_b133han05_mode,
.num_modes = 1,
.bpc = 8,
.size = {
.width = 293,
.height = 165,
},
.delay = {
.hpd_reliable = 100,
.enable = 20,
.unprepare = 50,
},
};
static const struct drm_display_mode auo_b133htn01_mode = {
.clock = 150660,
.hdisplay = 1920,
.hsync_start = 1920 + 172,
.hsync_end = 1920 + 172 + 80,
.htotal = 1920 + 172 + 80 + 60,
.vdisplay = 1080,
.vsync_start = 1080 + 25,
.vsync_end = 1080 + 25 + 10,
.vtotal = 1080 + 25 + 10 + 10,
};
static const struct panel_desc auo_b133htn01 = {
.modes = &auo_b133htn01_mode,
.num_modes = 1,
.bpc = 6,
.size = {
.width = 293,
.height = 165,
},
.delay = {
.hpd_reliable = 105,
.enable = 20,
.unprepare = 50,
},
};
static const struct drm_display_mode auo_b133xtn01_mode = {
.clock = 69500,
.hdisplay = 1366,
.hsync_start = 1366 + 48,
.hsync_end = 1366 + 48 + 32,
.htotal = 1366 + 48 + 32 + 20,
.vdisplay = 768,
.vsync_start = 768 + 3,
.vsync_end = 768 + 3 + 6,
.vtotal = 768 + 3 + 6 + 13,
};
static const struct panel_desc auo_b133xtn01 = {
.modes = &auo_b133xtn01_mode,
.num_modes = 1,
.bpc = 6,
.size = {
.width = 293,
.height = 165,
},
};
static const struct drm_display_mode auo_b140han06_mode = {
.clock = 141000,
.hdisplay = 1920,
.hsync_start = 1920 + 16,
.hsync_end = 1920 + 16 + 16,
.htotal = 1920 + 16 + 16 + 152,
.vdisplay = 1080,
.vsync_start = 1080 + 3,
.vsync_end = 1080 + 3 + 14,
.vtotal = 1080 + 3 + 14 + 19,
};
static const struct panel_desc auo_b140han06 = {
.modes = &auo_b140han06_mode,
.num_modes = 1,
.bpc = 8,
.size = {
.width = 309,
.height = 174,
},
.delay = {
.hpd_reliable = 100,
.enable = 20,
.unprepare = 50,
},
};
static const struct drm_display_mode boe_nv101wxmn51_modes[] = {
{
.clock = 71900,
.hdisplay = 1280,
.hsync_start = 1280 + 48,
.hsync_end = 1280 + 48 + 32,
.htotal = 1280 + 48 + 32 + 80,
.vdisplay = 800,
.vsync_start = 800 + 3,
.vsync_end = 800 + 3 + 5,
.vtotal = 800 + 3 + 5 + 24,
},
{
.clock = 57500,
.hdisplay = 1280,
.hsync_start = 1280 + 48,
.hsync_end = 1280 + 48 + 32,
.htotal = 1280 + 48 + 32 + 80,
.vdisplay = 800,
.vsync_start = 800 + 3,
.vsync_end = 800 + 3 + 5,
.vtotal = 800 + 3 + 5 + 24,
},
};
static const struct panel_desc boe_nv101wxmn51 = {
.modes = boe_nv101wxmn51_modes,
.num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes),
.bpc = 8,
.size = {
.width = 217,
.height = 136,
},
.delay = {
/* TODO: should be hpd-absent and no-hpd should be set? */
.hpd_reliable = 210,
.enable = 50,
.unprepare = 160,
},
};
static const struct drm_display_mode boe_nv110wtm_n61_modes[] = {
{
.clock = 207800,
.hdisplay = 2160,
.hsync_start = 2160 + 48,
.hsync_end = 2160 + 48 + 32,
.htotal = 2160 + 48 + 32 + 100,
.vdisplay = 1440,
.vsync_start = 1440 + 3,
.vsync_end = 1440 + 3 + 6,
.vtotal = 1440 + 3 + 6 + 31,
.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
},
{
.clock = 138500,
.hdisplay = 2160,
.hsync_start = 2160 + 48,
.hsync_end = 2160 + 48 + 32,
.htotal = 2160 + 48 + 32 + 100,
.vdisplay = 1440,
.vsync_start = 1440 + 3,
.vsync_end = 1440 + 3 + 6,
.vtotal = 1440 + 3 + 6 + 31,
.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
},
};
static const struct panel_desc boe_nv110wtm_n61 = {
.modes = boe_nv110wtm_n61_modes,
.num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes),
.bpc = 8,
.size = {
.width = 233,
.height = 155,
},
.delay = {
.hpd_absent = 200,
.prepare_to_enable = 80,
.enable = 50,
.unprepare = 500,
},
};
/* Also used for boe_nv133fhm_n62 */
static const struct drm_display_mode boe_nv133fhm_n61_modes = {
.clock = 147840,
.hdisplay = 1920,
.hsync_start = 1920 + 48,
.hsync_end = 1920 + 48 + 32,
.htotal = 1920 + 48 + 32 + 200,
.vdisplay = 1080,
.vsync_start = 1080 + 3,
.vsync_end = 1080 + 3 + 6,
.vtotal = 1080 + 3 + 6 + 31,
.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
};
/* Also used for boe_nv133fhm_n62 */
static const struct panel_desc boe_nv133fhm_n61 = {
.modes = &boe_nv133fhm_n61_modes,
.num_modes = 1,
.bpc = 6,
.size = {
.width = 294,
.height = 165,
},
.delay = {
/*
* When power is first given to the panel there's a short
* spike on the HPD line. It was explained that this spike
* was until the TCON data download was complete. On
* one system this was measured at 8 ms. We'll put 15 ms
* in the prepare delay just to be safe. That means:
* - If HPD isn't hooked up you still have 200 ms delay.
* - If HPD is hooked up we won't try to look at it for the
* first 15 ms.
*/
.hpd_reliable = 15,
.hpd_absent = 200,
.unprepare = 500,
},
};
static const struct drm_display_mode boe_nv140fhmn49_modes[] = {
{
.clock = 148500,
.hdisplay = 1920,
.hsync_start = 1920 + 48,
.hsync_end = 1920 + 48 + 32,
.htotal = 2200,
.vdisplay = 1080,
.vsync_start = 1080 + 3,
.vsync_end = 1080 + 3 + 5,
.vtotal = 1125,
},
};
static const struct panel_desc boe_nv140fhmn49 = {
.modes = boe_nv140fhmn49_modes,
.num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes),
.bpc = 6,
.size = {
.width = 309,
.height = 174,
},
.delay = {
/* TODO: should be hpd-absent and no-hpd should be set? */
.hpd_reliable = 210,
.enable = 50,
.unprepare = 160,
},
};
static const struct drm_display_mode innolux_n116bca_ea1_mode = {
.clock = 76420,
.hdisplay = 1366,
.hsync_start = 1366 + 136,
.hsync_end = 1366 + 136 + 30,
.htotal = 1366 + 136 + 30 + 60,
.vdisplay = 768,
.vsync_start = 768 + 8,
.vsync_end = 768 + 8 + 12,
.vtotal = 768 + 8 + 12 + 12,
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
};
static const struct panel_desc innolux_n116bca_ea1 = {
.modes = &innolux_n116bca_ea1_mode,
.num_modes = 1,
.bpc = 6,
.size = {
.width = 256,
.height = 144,
},
.delay = {
.hpd_absent = 200,
.enable = 80,
.disable = 50,
.unprepare = 500,
},
};
/*
* Datasheet specifies that at 60 Hz refresh rate:
* - total horizontal time: { 1506, 1592, 1716 }
* - total vertical time: { 788, 800, 868 }
*
* ...but doesn't go into exactly how that should be split into a front
* porch, back porch, or sync length. For now we'll leave a single setting
* here which allows a bit of tweaking of the pixel clock at the expense of
* refresh rate.
*/
static const struct display_timing innolux_n116bge_timing = {
.pixelclock = { 72600000, 76420000, 80240000 },
.hactive = { 1366, 1366, 1366 },
.hfront_porch = { 136, 136, 136 },
.hback_porch = { 60, 60, 60 },
.hsync_len = { 30, 30, 30 },
.vactive = { 768, 768, 768 },
.vfront_porch = { 8, 8, 8 },
.vback_porch = { 12, 12, 12 },
.vsync_len = { 12, 12, 12 },
.flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
};
static const struct panel_desc innolux_n116bge = {
.timings = &innolux_n116bge_timing,
.num_timings = 1,
.bpc = 6,
.size = {
.width = 256,
.height = 144,
},
};
static const struct drm_display_mode innolux_n125hce_gn1_mode = {
.clock = 162000,
.hdisplay = 1920,
.hsync_start = 1920 + 40,
.hsync_end = 1920 + 40 + 40,
.htotal = 1920 + 40 + 40 + 80,
.vdisplay = 1080,
.vsync_start = 1080 + 4,
.vsync_end = 1080 + 4 + 4,
.vtotal = 1080 + 4 + 4 + 24,
};
static const struct panel_desc innolux_n125hce_gn1 = {
.modes = &innolux_n125hce_gn1_mode,
.num_modes = 1,
.bpc = 8,
.size = {
.width = 276,
.height = 155,
},
};
static const struct drm_display_mode innolux_p120zdg_bf1_mode = {
.clock = 206016,
.hdisplay = 2160,
.hsync_start = 2160 + 48,
.hsync_end = 2160 + 48 + 32,
.htotal = 2160 + 48 + 32 + 80,
.vdisplay = 1440,
.vsync_start = 1440 + 3,
.vsync_end = 1440 + 3 + 10,
.vtotal = 1440 + 3 + 10 + 27,
.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
};
static const struct panel_desc innolux_p120zdg_bf1 = {
.modes = &innolux_p120zdg_bf1_mode,
.num_modes = 1,
.bpc = 8,
.size = {
.width = 254,
.height = 169,
},
.delay = {
.hpd_absent = 200,
.unprepare = 500,
},
};
static const struct drm_display_mode ivo_m133nwf4_r0_mode = {
.clock = 138778,
.hdisplay = 1920,
.hsync_start = 1920 + 24,
.hsync_end = 1920 + 24 + 48,
.htotal = 1920 + 24 + 48 + 88,
.vdisplay = 1080,
.vsync_start = 1080 + 3,
.vsync_end = 1080 + 3 + 12,
.vtotal = 1080 + 3 + 12 + 17,
.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
};
static const struct panel_desc ivo_m133nwf4_r0 = {
.modes = &ivo_m133nwf4_r0_mode,
.num_modes = 1,
.bpc = 8,
.size = {
.width = 294,
.height = 165,
},
.delay = {
.hpd_absent = 200,
.unprepare = 500,
},
};
static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = {
.clock = 81000,
.hdisplay = 1366,
.hsync_start = 1366 + 40,
.hsync_end = 1366 + 40 + 32,
.htotal = 1366 + 40 + 32 + 62,
.vdisplay = 768,
.vsync_start = 768 + 5,
.vsync_end = 768 + 5 + 5,
.vtotal = 768 + 5 + 5 + 122,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
};
static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = {
.modes = &kingdisplay_kd116n21_30nv_a010_mode,
.num_modes = 1,
.bpc = 6,
.size = {
.width = 256,
.height = 144,
},
.delay = {
.hpd_absent = 200,
},
};
static const struct drm_display_mode lg_lp079qx1_sp0v_mode = {
.clock = 200000,
.hdisplay = 1536,
.hsync_start = 1536 + 12,
.hsync_end = 1536 + 12 + 16,
.htotal = 1536 + 12 + 16 + 48,
.vdisplay = 2048,
.vsync_start = 2048 + 8,
.vsync_end = 2048 + 8 + 4,
.vtotal = 2048 + 8 + 4 + 8,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
};
static const struct panel_desc lg_lp079qx1_sp0v = {
.modes = &lg_lp079qx1_sp0v_mode,
.num_modes = 1,
.size = {
.width = 129,
.height = 171,
},
};
static const struct drm_display_mode lg_lp097qx1_spa1_mode = {
.clock = 205210,
.hdisplay = 2048,
.hsync_start = 2048 + 150,
.hsync_end = 2048 + 150 + 5,
.htotal = 2048 + 150 + 5 + 5,
.vdisplay = 1536,
.vsync_start = 1536 + 3,
.vsync_end = 1536 + 3 + 1,
.vtotal = 1536 + 3 + 1 + 9,
};
static const struct panel_desc lg_lp097qx1_spa1 = {
.modes = &lg_lp097qx1_spa1_mode,
.num_modes = 1,
.size = {
.width = 208,
.height = 147,
},
};
static const struct drm_display_mode lg_lp120up1_mode = {
.clock = 162300,
.hdisplay = 1920,
.hsync_start = 1920 + 40,
.hsync_end = 1920 + 40 + 40,
.htotal = 1920 + 40 + 40 + 80,
.vdisplay = 1280,
.vsync_start = 1280 + 4,
.vsync_end = 1280 + 4 + 4,
.vtotal = 1280 + 4 + 4 + 12,
};
static const struct panel_desc lg_lp120up1 = {
.modes = &lg_lp120up1_mode,
.num_modes = 1,
.bpc = 8,
.size = {
.width = 267,
.height = 183,
},
};
static const struct drm_display_mode lg_lp129qe_mode = {
.clock = 285250,
.hdisplay = 2560,
.hsync_start = 2560 + 48,
.hsync_end = 2560 + 48 + 32,
.htotal = 2560 + 48 + 32 + 80,
.vdisplay = 1700,
.vsync_start = 1700 + 3,
.vsync_end = 1700 + 3 + 10,
.vtotal = 1700 + 3 + 10 + 36,
};
static const struct panel_desc lg_lp129qe = {
.modes = &lg_lp129qe_mode,
.num_modes = 1,
.bpc = 8,
.size = {
.width = 272,
.height = 181,
},
};
static const struct drm_display_mode neweast_wjfh116008a_modes[] = {
{
.clock = 138500,
.hdisplay = 1920,
.hsync_start = 1920 + 48,
.hsync_end = 1920 + 48 + 32,
.htotal = 1920 + 48 + 32 + 80,
.vdisplay = 1080,
.vsync_start = 1080 + 3,
.vsync_end = 1080 + 3 + 5,
.vtotal = 1080 + 3 + 5 + 23,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
}, {
.clock = 110920,
.hdisplay = 1920,
.hsync_start = 1920 + 48,
.hsync_end = 1920 + 48 + 32,
.htotal = 1920 + 48 + 32 + 80,
.vdisplay = 1080,
.vsync_start = 1080 + 3,
.vsync_end = 1080 + 3 + 5,
.vtotal = 1080 + 3 + 5 + 23,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
}
};
static const struct panel_desc neweast_wjfh116008a = {
.modes = neweast_wjfh116008a_modes,
.num_modes = 2,
.bpc = 6,
.size = {
.width = 260,
.height = 150,
},
.delay = {
.hpd_reliable = 110,
.enable = 20,
.unprepare = 500,
},
};
static const struct drm_display_mode samsung_lsn122dl01_c01_mode = {
.clock = 271560,
.hdisplay = 2560,
.hsync_start = 2560 + 48,
.hsync_end = 2560 + 48 + 32,
.htotal = 2560 + 48 + 32 + 80,
.vdisplay = 1600,
.vsync_start = 1600 + 2,
.vsync_end = 1600 + 2 + 5,
.vtotal = 1600 + 2 + 5 + 57,
};
static const struct panel_desc samsung_lsn122dl01_c01 = {
.modes = &samsung_lsn122dl01_c01_mode,
.num_modes = 1,
.size = {
.width = 263,
.height = 164,
},
};
static const struct drm_display_mode samsung_ltn140at29_301_mode = {
.clock = 76300,
.hdisplay = 1366,
.hsync_start = 1366 + 64,
.hsync_end = 1366 + 64 + 48,
.htotal = 1366 + 64 + 48 + 128,
.vdisplay = 768,
.vsync_start = 768 + 2,
.vsync_end = 768 + 2 + 5,
.vtotal = 768 + 2 + 5 + 17,
};
static const struct panel_desc samsung_ltn140at29_301 = {
.modes = &samsung_ltn140at29_301_mode,
.num_modes = 1,
.bpc = 6,
.size = {
.width = 320,
.height = 187,
},
};
static const struct drm_display_mode sharp_ld_d5116z01b_mode = {
.clock = 168480,
.hdisplay = 1920,
.hsync_start = 1920 + 48,
.hsync_end = 1920 + 48 + 32,
.htotal = 1920 + 48 + 32 + 80,
.vdisplay = 1280,
.vsync_start = 1280 + 3,
.vsync_end = 1280 + 3 + 10,
.vtotal = 1280 + 3 + 10 + 57,
.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
};
static const struct panel_desc sharp_ld_d5116z01b = {
.modes = &sharp_ld_d5116z01b_mode,
.num_modes = 1,
.bpc = 8,
.size = {
.width = 260,
.height = 120,
},
};
static const struct display_timing sharp_lq123p1jx31_timing = {
.pixelclock = { 252750000, 252750000, 266604720 },
.hactive = { 2400, 2400, 2400 },
.hfront_porch = { 48, 48, 48 },
.hback_porch = { 80, 80, 84 },
.hsync_len = { 32, 32, 32 },
.vactive = { 1600, 1600, 1600 },
.vfront_porch = { 3, 3, 3 },
.vback_porch = { 33, 33, 120 },
.vsync_len = { 10, 10, 10 },
.flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
};
static const struct panel_desc sharp_lq123p1jx31 = {
.timings = &sharp_lq123p1jx31_timing,
.num_timings = 1,
.bpc = 8,
.size = {
.width = 259,
.height = 173,
},
.delay = {
.hpd_reliable = 110,
.enable = 50,
.unprepare = 550,
},
};
static const struct drm_display_mode sharp_lq140m1jw46_mode[] = {
{
.clock = 346500,
.hdisplay = 1920,
.hsync_start = 1920 + 48,
.hsync_end = 1920 + 48 + 32,
.htotal = 1920 + 48 + 32 + 80,
.vdisplay = 1080,
.vsync_start = 1080 + 3,
.vsync_end = 1080 + 3 + 5,
.vtotal = 1080 + 3 + 5 + 69,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
}, {
.clock = 144370,
.hdisplay = 1920,
.hsync_start = 1920 + 48,
.hsync_end = 1920 + 48 + 32,
.htotal = 1920 + 48 + 32 + 80,
.vdisplay = 1080,
.vsync_start = 1080 + 3,
.vsync_end = 1080 + 3 + 5,
.vtotal = 1080 + 3 + 5 + 69,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
},
};
static const struct panel_desc sharp_lq140m1jw46 = {
.modes = sharp_lq140m1jw46_mode,
.num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode),
.bpc = 8,
.size = {
.width = 309,
.height = 174,
},
.delay = {
.hpd_absent = 80,
.enable = 50,
.unprepare = 500,
},
};
static const struct drm_display_mode starry_kr122ea0sra_mode = {
.clock = 147000,
.hdisplay = 1920,
.hsync_start = 1920 + 16,
.hsync_end = 1920 + 16 + 16,
.htotal = 1920 + 16 + 16 + 32,
.vdisplay = 1200,
.vsync_start = 1200 + 15,
.vsync_end = 1200 + 15 + 2,
.vtotal = 1200 + 15 + 2 + 18,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
};
static const struct panel_desc starry_kr122ea0sra = {
.modes = &starry_kr122ea0sra_mode,
.num_modes = 1,
.size = {
.width = 263,
.height = 164,
},
.delay = {
/* TODO: should be hpd-absent and no-hpd should be set? */
.hpd_reliable = 10 + 200,
.enable = 50,
.unprepare = 10 + 500,
},
};
static const struct of_device_id platform_of_match[] = {
{
/* Must be first */
.compatible = "edp-panel",
}, {
.compatible = "auo,b101ean01",
.data = &auo_b101ean01,
}, {
.compatible = "auo,b116xa01",
.data = &auo_b116xak01,
}, {
.compatible = "auo,b116xw03",
.data = &auo_b116xw03,
}, {
.compatible = "auo,b133han05",
.data = &auo_b133han05,
}, {
.compatible = "auo,b133htn01",
.data = &auo_b133htn01,
}, {
.compatible = "auo,b133xtn01",
.data = &auo_b133xtn01,
}, {
.compatible = "auo,b140han06",
.data = &auo_b140han06,
}, {
.compatible = "boe,nv101wxmn51",
.data = &boe_nv101wxmn51,
}, {
.compatible = "boe,nv110wtm-n61",
.data = &boe_nv110wtm_n61,
}, {
.compatible = "boe,nv133fhm-n61",
.data = &boe_nv133fhm_n61,
}, {
.compatible = "boe,nv133fhm-n62",
.data = &boe_nv133fhm_n61,
}, {
.compatible = "boe,nv140fhmn49",
.data = &boe_nv140fhmn49,
}, {
.compatible = "innolux,n116bca-ea1",
.data = &innolux_n116bca_ea1,
}, {
.compatible = "innolux,n116bge",
.data = &innolux_n116bge,
}, {
.compatible = "innolux,n125hce-gn1",
.data = &innolux_n125hce_gn1,
}, {
.compatible = "innolux,p120zdg-bf1",
.data = &innolux_p120zdg_bf1,
}, {
.compatible = "ivo,m133nwf4-r0",
.data = &ivo_m133nwf4_r0,
}, {
.compatible = "kingdisplay,kd116n21-30nv-a010",
.data = &kingdisplay_kd116n21_30nv_a010,
}, {
.compatible = "lg,lp079qx1-sp0v",
.data = &lg_lp079qx1_sp0v,
}, {
.compatible = "lg,lp097qx1-spa1",
.data = &lg_lp097qx1_spa1,
}, {
.compatible = "lg,lp120up1",
.data = &lg_lp120up1,
}, {
.compatible = "lg,lp129qe",
.data = &lg_lp129qe,
}, {
.compatible = "neweast,wjfh116008a",
.data = &neweast_wjfh116008a,
}, {
.compatible = "samsung,lsn122dl01-c01",
.data = &samsung_lsn122dl01_c01,
}, {
.compatible = "samsung,ltn140at29-301",
.data = &samsung_ltn140at29_301,
}, {
.compatible = "sharp,ld-d5116z01b",
.data = &sharp_ld_d5116z01b,
}, {
.compatible = "sharp,lq123p1jx31",
.data = &sharp_lq123p1jx31,
}, {
.compatible = "sharp,lq140m1jw46",
.data = &sharp_lq140m1jw46,
}, {
.compatible = "starry,kr122ea0sra",
.data = &starry_kr122ea0sra,
}, {
/* sentinel */
}
};
MODULE_DEVICE_TABLE(of, platform_of_match);
static const struct panel_delay delay_200_500_p2e80 = {
.hpd_absent = 200,
.unprepare = 500,
.prepare_to_enable = 80,
};
static const struct panel_delay delay_200_500_p2e100 = {
.hpd_absent = 200,
.unprepare = 500,
.prepare_to_enable = 100,
};
static const struct panel_delay delay_200_500_e50 = {
.hpd_absent = 200,
.unprepare = 500,
.enable = 50,
};
static const struct panel_delay delay_200_500_e80_d50 = {
.hpd_absent = 200,
.unprepare = 500,
.enable = 80,
.disable = 50,
};
static const struct panel_delay delay_100_500_e200 = {
.hpd_absent = 100,
.unprepare = 500,
.enable = 200,
};
static const struct panel_delay delay_200_500_e200 = {
.hpd_absent = 200,
.unprepare = 500,
.enable = 200,
};
#define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \
{ \
.name = _name, \
.panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
product_id), \
.delay = _delay \
}
/*
* This table is used to figure out power sequencing delays for panels that
* are detected by EDID. Entries here may point to entries in the
* platform_of_match table (if a panel is listed in both places).
*
* Sort first by vendor, then by product ID.
*/
static const struct edp_panel_entry edp_panels[] = {
EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"),
EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"),
EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"),
EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01"),
EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"),
EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"),
EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"),
EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"),
EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"),
EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"),
EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"),
EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"),
EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"),
EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"),
EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"),
EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &sharp_lq140m1jw46.delay, "LQ140M1JW46"),
EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"),
EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"),
{ /* sentinal */ }
};
static const struct edp_panel_entry *find_edp_panel(u32 panel_id)
{
const struct edp_panel_entry *panel;
if (!panel_id)
return NULL;
for (panel = edp_panels; panel->panel_id; panel++)
if (panel->panel_id == panel_id)
return panel;
return NULL;
}
static int panel_edp_platform_probe(struct platform_device *pdev)
{
const struct of_device_id *id;
/* Skip one since "edp-panel" is only supported on DP AUX bus */
id = of_match_node(platform_of_match + 1, pdev->dev.of_node);
if (!id)
return -ENODEV;
return panel_edp_probe(&pdev->dev, id->data, NULL);
}
static int panel_edp_platform_remove(struct platform_device *pdev)
{
return panel_edp_remove(&pdev->dev);
}
static void panel_edp_platform_shutdown(struct platform_device *pdev)
{
panel_edp_shutdown(&pdev->dev);
}
static const struct dev_pm_ops panel_edp_pm_ops = {
SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
static struct platform_driver panel_edp_platform_driver = {
.driver = {
.name = "panel-edp",
.of_match_table = platform_of_match,
.pm = &panel_edp_pm_ops,
},
.probe = panel_edp_platform_probe,
.remove = panel_edp_platform_remove,
.shutdown = panel_edp_platform_shutdown,
};
static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep)
{
const struct of_device_id *id;
id = of_match_node(platform_of_match, aux_ep->dev.of_node);
if (!id)
return -ENODEV;
return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux);
}
static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep)
{
panel_edp_remove(&aux_ep->dev);
}
static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep)
{
panel_edp_shutdown(&aux_ep->dev);
}
static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = {
.driver = {
.name = "panel-simple-dp-aux",
.of_match_table = platform_of_match, /* Same as platform one! */
.pm = &panel_edp_pm_ops,
},
.probe = panel_edp_dp_aux_ep_probe,
.remove = panel_edp_dp_aux_ep_remove,
.shutdown = panel_edp_dp_aux_ep_shutdown,
};
static int __init panel_edp_init(void)
{
int err;
err = platform_driver_register(&panel_edp_platform_driver);
if (err < 0)
return err;
err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver);
if (err < 0)
goto err_did_platform_register;
return 0;
err_did_platform_register:
platform_driver_unregister(&panel_edp_platform_driver);
return err;
}
module_init(panel_edp_init);
static void __exit panel_edp_exit(void)
{
dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver);
platform_driver_unregister(&panel_edp_platform_driver);
}
module_exit(panel_edp_exit);
MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels");
MODULE_LICENSE("GPL and additional rights");