diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-edp.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-edp.c | 2023 |
1 files changed, 2023 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c new file mode 100644 index 000000000..ecd623874 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-edp.c @@ -0,0 +1,2023 @@ +/* + * 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, + .unprepare = 500, + .enable = 50, + }, +}; + +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, "B116XAK01.0"), + 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"); |