| Message ID | 1446244470-8517-2-git-send-email-bjorn.andersson@sonymobile.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Delegated to: | Andy Gross |
| Headers | show |
On 10/31/2015 04:04 AM, Bjorn Andersson wrote: > From: Werner Johansson <werner.johansson@sonymobile.com> > > This adds support for the Sharp panel found on the Qualcomm > Snapdragon 800 Dragonboard (APQ8074) > > Signed-off-by: Werner Johansson <werner.johansson@sonymobile.com> > Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Reviewed-by: Archit Taneja <architt@codeaurora.org> > --- > > Change since v1: > - Dropped -vid suffix from compatible > > drivers/gpu/drm/panel/Kconfig | 9 + > drivers/gpu/drm/panel/Makefile | 1 + > drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c | 387 ++++++++++++++++++++++++ > 3 files changed, 397 insertions(+) > create mode 100644 drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c > > diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig > index 7d4704b1292b..da3b9c7889c4 100644 > --- a/drivers/gpu/drm/panel/Kconfig > +++ b/drivers/gpu/drm/panel/Kconfig > @@ -51,4 +51,13 @@ config DRM_PANEL_SHARP_LQ101R1SX01 > To compile this driver as a module, choose M here: the module > will be called panel-sharp-lq101r1sx01. > > +config DRM_PANEL_SHARP_LS043T1LE01 > + tristate "Sharp LS043T1LE01 qHD video mode panel" > + depends on OF > + depends on DRM_MIPI_DSI > + depends on BACKLIGHT_CLASS_DEVICE > + help > + Say Y here if you want to enable support for Sharp LS043T1LE01 qHD > + (540x960) DSI panel as found on the Qualcomm APQ8074 Dragonboard > + > endmenu > diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile > index d0f016dd7ddb..53de90aa49cd 100644 > --- a/drivers/gpu/drm/panel/Makefile > +++ b/drivers/gpu/drm/panel/Makefile > @@ -3,3 +3,4 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o > obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o > obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o > obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o > +obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o > diff --git a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c > new file mode 100644 > index 000000000000..3aeb0bda4947 > --- /dev/null > +++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c > @@ -0,0 +1,387 @@ > +/* > + * Copyright (C) 2015 Red Hat > + * Copyright (C) 2015 Sony Mobile Communications Inc. > + * Author: Werner Johansson <werner.johansson@sonymobile.com> > + * > + * Based on AUO panel driver by Rob Clark <robdclark@gmail.com> > + * > + * This program is free software; you can redistribute it and/or modify it > + * under the terms of the GNU General Public License version 2 as published by > + * the Free Software Foundation. > + * > + * This program is distributed in the hope that it will be useful, but WITHOUT > + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or > + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for > + * more details. > + * > + * You should have received a copy of the GNU General Public License along with > + * this program. If not, see <http://www.gnu.org/licenses/>. > + */ > + > +#include <linux/backlight.h> > +#include <linux/gpio/consumer.h> > +#include <linux/module.h> > +#include <linux/of.h> > +#include <linux/regulator/consumer.h> > + > +#include <drm/drmP.h> > +#include <drm/drm_crtc.h> > +#include <drm/drm_mipi_dsi.h> > +#include <drm/drm_panel.h> > + > +#include <video/mipi_display.h> > + > +struct sharp_nt_panel { > + struct drm_panel base; > + struct mipi_dsi_device *dsi; > + > + struct backlight_device *backlight; > + struct regulator *supply; > + struct gpio_desc *reset_gpio; > + > + bool prepared; > + bool enabled; > + > + const struct drm_display_mode *mode; > +}; > + > +static inline struct sharp_nt_panel *to_sharp_nt_panel(struct drm_panel *panel) > +{ > + return container_of(panel, struct sharp_nt_panel, base); > +} > + > +static int sharp_nt_panel_init(struct sharp_nt_panel *sharp_nt) > +{ > + struct mipi_dsi_device *dsi = sharp_nt->dsi; > + int ret; > + > + dsi->mode_flags |= MIPI_DSI_MODE_LPM; > + > + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); > + if (ret < 0) > + return ret; > + > + msleep(120); > + > + /* Novatek two-lane operation */ > + ret = mipi_dsi_dcs_write(dsi, 0xae, (u8[]){ 0x03 }, 1); > + if (ret < 0) > + return ret; > + > + /* Set both MCU and RGB I/F to 24bpp */ > + ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT | > + (MIPI_DCS_PIXEL_FMT_24BIT << 4)); > + if (ret < 0) > + return ret; > + > + return 0; > +} > + > +static int sharp_nt_panel_on(struct sharp_nt_panel *sharp_nt) > +{ > + struct mipi_dsi_device *dsi = sharp_nt->dsi; > + int ret; > + > + dsi->mode_flags |= MIPI_DSI_MODE_LPM; > + > + ret = mipi_dsi_dcs_set_display_on(dsi); > + if (ret < 0) > + return ret; > + > + return 0; > +} > + > +static int sharp_nt_panel_off(struct sharp_nt_panel *sharp_nt) > +{ > + struct mipi_dsi_device *dsi = sharp_nt->dsi; > + int ret; > + > + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; > + > + ret = mipi_dsi_dcs_set_display_off(dsi); > + if (ret < 0) > + return ret; > + > + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); > + if (ret < 0) > + return ret; > + > + return 0; > +} > + > + > +static int sharp_nt_panel_disable(struct drm_panel *panel) > +{ > + struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); > + > + if (!sharp_nt->enabled) > + return 0; > + > + if (sharp_nt->backlight) { > + sharp_nt->backlight->props.power = FB_BLANK_POWERDOWN; > + backlight_update_status(sharp_nt->backlight); > + } > + > + sharp_nt->enabled = false; > + > + return 0; > +} > + > +static int sharp_nt_panel_unprepare(struct drm_panel *panel) > +{ > + struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); > + int ret; > + > + if (!sharp_nt->prepared) > + return 0; > + > + ret = sharp_nt_panel_off(sharp_nt); > + if (ret < 0) { > + dev_err(panel->dev, "failed to set panel off: %d\n", ret); > + return ret; > + } > + > + regulator_disable(sharp_nt->supply); > + if (sharp_nt->reset_gpio) > + gpiod_set_value(sharp_nt->reset_gpio, 0); > + > + sharp_nt->prepared = false; > + > + return 0; > +} > + > +static int sharp_nt_panel_prepare(struct drm_panel *panel) > +{ > + struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); > + int ret; > + > + if (sharp_nt->prepared) > + return 0; > + > + ret = regulator_enable(sharp_nt->supply); > + if (ret < 0) > + return ret; > + > + msleep(20); > + > + if (sharp_nt->reset_gpio) { > + gpiod_set_value(sharp_nt->reset_gpio, 1); > + msleep(1); > + gpiod_set_value(sharp_nt->reset_gpio, 0); > + msleep(1); > + gpiod_set_value(sharp_nt->reset_gpio, 1); > + msleep(10); > + } > + > + ret = sharp_nt_panel_init(sharp_nt); > + if (ret < 0) { > + dev_err(panel->dev, "failed to init panel: %d\n", ret); > + goto poweroff; > + } > + > + ret = sharp_nt_panel_on(sharp_nt); > + if (ret < 0) { > + dev_err(panel->dev, "failed to set panel on: %d\n", ret); > + goto poweroff; > + } > + > + sharp_nt->prepared = true; > + > + return 0; > + > +poweroff: > + regulator_disable(sharp_nt->supply); > + if (sharp_nt->reset_gpio) > + gpiod_set_value(sharp_nt->reset_gpio, 0); > + return ret; > +} > + > +static int sharp_nt_panel_enable(struct drm_panel *panel) > +{ > + struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); > + > + if (sharp_nt->enabled) > + return 0; > + > + if (sharp_nt->backlight) { > + sharp_nt->backlight->props.power = FB_BLANK_UNBLANK; > + backlight_update_status(sharp_nt->backlight); > + } > + > + sharp_nt->enabled = true; > + > + return 0; > +} > + > +static const struct drm_display_mode default_mode = { > + .clock = 41118, > + .hdisplay = 540, > + .hsync_start = 540 + 48, > + .hsync_end = 540 + 48 + 80, > + .htotal = 540 + 48 + 80 + 32, > + .vdisplay = 960, > + .vsync_start = 960 + 3, > + .vsync_end = 960 + 3 + 15, > + .vtotal = 960 + 3 + 15 + 1, > + .vrefresh = 60, > +}; > + > +static int sharp_nt_panel_get_modes(struct drm_panel *panel) > +{ > + struct drm_display_mode *mode; > + > + mode = drm_mode_duplicate(panel->drm, &default_mode); > + if (!mode) { > + dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n", > + default_mode.hdisplay, default_mode.vdisplay, > + default_mode.vrefresh); > + return -ENOMEM; > + } > + > + drm_mode_set_name(mode); > + > + drm_mode_probed_add(panel->connector, mode); > + > + panel->connector->display_info.width_mm = 54; > + panel->connector->display_info.height_mm = 95; > + > + return 1; > +} > + > +static const struct drm_panel_funcs sharp_nt_panel_funcs = { > + .disable = sharp_nt_panel_disable, > + .unprepare = sharp_nt_panel_unprepare, > + .prepare = sharp_nt_panel_prepare, > + .enable = sharp_nt_panel_enable, > + .get_modes = sharp_nt_panel_get_modes, > +}; > + > +static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt) > +{ > + struct device *dev = &sharp_nt->dsi->dev; > + struct device_node *np; > + int ret; > + > + sharp_nt->mode = &default_mode; > + > + sharp_nt->supply = devm_regulator_get(dev, "avdd"); > + if (IS_ERR(sharp_nt->supply)) > + return PTR_ERR(sharp_nt->supply); > + > + sharp_nt->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); > + if (IS_ERR(sharp_nt->reset_gpio)) { > + dev_err(dev, "cannot get reset-gpios %ld\n", > + PTR_ERR(sharp_nt->reset_gpio)); > + sharp_nt->reset_gpio = NULL; > + } else { > + gpiod_set_value(sharp_nt->reset_gpio, 0); > + } > + > + np = of_parse_phandle(dev->of_node, "backlight", 0); > + if (np) { > + sharp_nt->backlight = of_find_backlight_by_node(np); > + of_node_put(np); > + > + if (!sharp_nt->backlight) > + return -EPROBE_DEFER; > + } > + > + drm_panel_init(&sharp_nt->base); > + sharp_nt->base.funcs = &sharp_nt_panel_funcs; > + sharp_nt->base.dev = &sharp_nt->dsi->dev; > + > + ret = drm_panel_add(&sharp_nt->base); > + if (ret < 0) > + goto put_backlight; > + > + return 0; > + > +put_backlight: > + if (sharp_nt->backlight) > + put_device(&sharp_nt->backlight->dev); > + > + return ret; > +} > + > +static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt) > +{ > + if (sharp_nt->base.dev) > + drm_panel_remove(&sharp_nt->base); > + > + if (sharp_nt->backlight) > + put_device(&sharp_nt->backlight->dev); > +} > + > +static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi) > +{ > + struct sharp_nt_panel *sharp_nt; > + int ret; > + > + dsi->lanes = 2; > + dsi->format = MIPI_DSI_FMT_RGB888; > + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | > + MIPI_DSI_MODE_VIDEO_HSE | > + MIPI_DSI_CLOCK_NON_CONTINUOUS | > + MIPI_DSI_MODE_EOT_PACKET; > + > + sharp_nt = devm_kzalloc(&dsi->dev, sizeof(*sharp_nt), GFP_KERNEL); > + if (!sharp_nt) > + return -ENOMEM; > + > + mipi_dsi_set_drvdata(dsi, sharp_nt); > + > + sharp_nt->dsi = dsi; > + > + ret = sharp_nt_panel_add(sharp_nt); > + if (ret < 0) > + return ret; > + > + return mipi_dsi_attach(dsi); > +} > + > +static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi) > +{ > + struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi); > + int ret; > + > + ret = sharp_nt_panel_disable(&sharp_nt->base); > + if (ret < 0) > + dev_err(&dsi->dev, "failed to disable panel: %d\n", ret); > + > + ret = mipi_dsi_detach(dsi); > + if (ret < 0) > + dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); > + > + drm_panel_detach(&sharp_nt->base); > + sharp_nt_panel_del(sharp_nt); > + > + return 0; > +} > + > +static void sharp_nt_panel_shutdown(struct mipi_dsi_device *dsi) > +{ > + struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi); > + > + sharp_nt_panel_disable(&sharp_nt->base); > +} > + > +static const struct of_device_id sharp_nt_of_match[] = { > + { .compatible = "sharp,ls043t1le01-qhd", }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, sharp_nt_of_match); > + > +static struct mipi_dsi_driver sharp_nt_panel_driver = { > + .driver = { > + .name = "panel-sharp-ls043t1le01-qhd", > + .of_match_table = sharp_nt_of_match, > + }, > + .probe = sharp_nt_panel_probe, > + .remove = sharp_nt_panel_remove, > + .shutdown = sharp_nt_panel_shutdown, > +}; > +module_mipi_dsi_driver(sharp_nt_panel_driver); > + > +MODULE_AUTHOR("Werner Johansson <werner.johansson@sonymobile.com>"); > +MODULE_DESCRIPTION("Sharp LS043T1LE01 NT35565-based qHD (540x960) video mode panel driver"); > +MODULE_LICENSE("GPL v2"); >
On Fri, Oct 30, 2015 at 03:34:30PM -0700, Bjorn Andersson wrote: > From: Werner Johansson <werner.johansson@sonymobile.com> > > This adds support for the Sharp panel found on the Qualcomm > Snapdragon 800 Dragonboard (APQ8074) > > Signed-off-by: Werner Johansson <werner.johansson@sonymobile.com> > Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> > --- > > Change since v1: > - Dropped -vid suffix from compatible Applied, thanks. Thierry
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 7d4704b1292b..da3b9c7889c4 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -51,4 +51,13 @@ config DRM_PANEL_SHARP_LQ101R1SX01 To compile this driver as a module, choose M here: the module will be called panel-sharp-lq101r1sx01. +config DRM_PANEL_SHARP_LS043T1LE01 + tristate "Sharp LS043T1LE01 qHD video mode panel" + depends on OF + depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y here if you want to enable support for Sharp LS043T1LE01 qHD + (540x960) DSI panel as found on the Qualcomm APQ8074 Dragonboard + endmenu diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index d0f016dd7ddb..53de90aa49cd 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -3,3 +3,4 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o +obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o diff --git a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c new file mode 100644 index 000000000000..3aeb0bda4947 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c @@ -0,0 +1,387 @@ +/* + * Copyright (C) 2015 Red Hat + * Copyright (C) 2015 Sony Mobile Communications Inc. + * Author: Werner Johansson <werner.johansson@sonymobile.com> + * + * Based on AUO panel driver by Rob Clark <robdclark@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/backlight.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/regulator/consumer.h> + +#include <drm/drmP.h> +#include <drm/drm_crtc.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_panel.h> + +#include <video/mipi_display.h> + +struct sharp_nt_panel { + struct drm_panel base; + struct mipi_dsi_device *dsi; + + struct backlight_device *backlight; + struct regulator *supply; + struct gpio_desc *reset_gpio; + + bool prepared; + bool enabled; + + const struct drm_display_mode *mode; +}; + +static inline struct sharp_nt_panel *to_sharp_nt_panel(struct drm_panel *panel) +{ + return container_of(panel, struct sharp_nt_panel, base); +} + +static int sharp_nt_panel_init(struct sharp_nt_panel *sharp_nt) +{ + struct mipi_dsi_device *dsi = sharp_nt->dsi; + int ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret < 0) + return ret; + + msleep(120); + + /* Novatek two-lane operation */ + ret = mipi_dsi_dcs_write(dsi, 0xae, (u8[]){ 0x03 }, 1); + if (ret < 0) + return ret; + + /* Set both MCU and RGB I/F to 24bpp */ + ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT | + (MIPI_DCS_PIXEL_FMT_24BIT << 4)); + if (ret < 0) + return ret; + + return 0; +} + +static int sharp_nt_panel_on(struct sharp_nt_panel *sharp_nt) +{ + struct mipi_dsi_device *dsi = sharp_nt->dsi; + int ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret < 0) + return ret; + + return 0; +} + +static int sharp_nt_panel_off(struct sharp_nt_panel *sharp_nt) +{ + struct mipi_dsi_device *dsi = sharp_nt->dsi; + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret < 0) + return ret; + + return 0; +} + + +static int sharp_nt_panel_disable(struct drm_panel *panel) +{ + struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); + + if (!sharp_nt->enabled) + return 0; + + if (sharp_nt->backlight) { + sharp_nt->backlight->props.power = FB_BLANK_POWERDOWN; + backlight_update_status(sharp_nt->backlight); + } + + sharp_nt->enabled = false; + + return 0; +} + +static int sharp_nt_panel_unprepare(struct drm_panel *panel) +{ + struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); + int ret; + + if (!sharp_nt->prepared) + return 0; + + ret = sharp_nt_panel_off(sharp_nt); + if (ret < 0) { + dev_err(panel->dev, "failed to set panel off: %d\n", ret); + return ret; + } + + regulator_disable(sharp_nt->supply); + if (sharp_nt->reset_gpio) + gpiod_set_value(sharp_nt->reset_gpio, 0); + + sharp_nt->prepared = false; + + return 0; +} + +static int sharp_nt_panel_prepare(struct drm_panel *panel) +{ + struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); + int ret; + + if (sharp_nt->prepared) + return 0; + + ret = regulator_enable(sharp_nt->supply); + if (ret < 0) + return ret; + + msleep(20); + + if (sharp_nt->reset_gpio) { + gpiod_set_value(sharp_nt->reset_gpio, 1); + msleep(1); + gpiod_set_value(sharp_nt->reset_gpio, 0); + msleep(1); + gpiod_set_value(sharp_nt->reset_gpio, 1); + msleep(10); + } + + ret = sharp_nt_panel_init(sharp_nt); + if (ret < 0) { + dev_err(panel->dev, "failed to init panel: %d\n", ret); + goto poweroff; + } + + ret = sharp_nt_panel_on(sharp_nt); + if (ret < 0) { + dev_err(panel->dev, "failed to set panel on: %d\n", ret); + goto poweroff; + } + + sharp_nt->prepared = true; + + return 0; + +poweroff: + regulator_disable(sharp_nt->supply); + if (sharp_nt->reset_gpio) + gpiod_set_value(sharp_nt->reset_gpio, 0); + return ret; +} + +static int sharp_nt_panel_enable(struct drm_panel *panel) +{ + struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel); + + if (sharp_nt->enabled) + return 0; + + if (sharp_nt->backlight) { + sharp_nt->backlight->props.power = FB_BLANK_UNBLANK; + backlight_update_status(sharp_nt->backlight); + } + + sharp_nt->enabled = true; + + return 0; +} + +static const struct drm_display_mode default_mode = { + .clock = 41118, + .hdisplay = 540, + .hsync_start = 540 + 48, + .hsync_end = 540 + 48 + 80, + .htotal = 540 + 48 + 80 + 32, + .vdisplay = 960, + .vsync_start = 960 + 3, + .vsync_end = 960 + 3 + 15, + .vtotal = 960 + 3 + 15 + 1, + .vrefresh = 60, +}; + +static int sharp_nt_panel_get_modes(struct drm_panel *panel) +{ + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(panel->drm, &default_mode); + if (!mode) { + dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n", + default_mode.hdisplay, default_mode.vdisplay, + default_mode.vrefresh); + return -ENOMEM; + } + + drm_mode_set_name(mode); + + drm_mode_probed_add(panel->connector, mode); + + panel->connector->display_info.width_mm = 54; + panel->connector->display_info.height_mm = 95; + + return 1; +} + +static const struct drm_panel_funcs sharp_nt_panel_funcs = { + .disable = sharp_nt_panel_disable, + .unprepare = sharp_nt_panel_unprepare, + .prepare = sharp_nt_panel_prepare, + .enable = sharp_nt_panel_enable, + .get_modes = sharp_nt_panel_get_modes, +}; + +static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt) +{ + struct device *dev = &sharp_nt->dsi->dev; + struct device_node *np; + int ret; + + sharp_nt->mode = &default_mode; + + sharp_nt->supply = devm_regulator_get(dev, "avdd"); + if (IS_ERR(sharp_nt->supply)) + return PTR_ERR(sharp_nt->supply); + + sharp_nt->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(sharp_nt->reset_gpio)) { + dev_err(dev, "cannot get reset-gpios %ld\n", + PTR_ERR(sharp_nt->reset_gpio)); + sharp_nt->reset_gpio = NULL; + } else { + gpiod_set_value(sharp_nt->reset_gpio, 0); + } + + np = of_parse_phandle(dev->of_node, "backlight", 0); + if (np) { + sharp_nt->backlight = of_find_backlight_by_node(np); + of_node_put(np); + + if (!sharp_nt->backlight) + return -EPROBE_DEFER; + } + + drm_panel_init(&sharp_nt->base); + sharp_nt->base.funcs = &sharp_nt_panel_funcs; + sharp_nt->base.dev = &sharp_nt->dsi->dev; + + ret = drm_panel_add(&sharp_nt->base); + if (ret < 0) + goto put_backlight; + + return 0; + +put_backlight: + if (sharp_nt->backlight) + put_device(&sharp_nt->backlight->dev); + + return ret; +} + +static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt) +{ + if (sharp_nt->base.dev) + drm_panel_remove(&sharp_nt->base); + + if (sharp_nt->backlight) + put_device(&sharp_nt->backlight->dev); +} + +static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi) +{ + struct sharp_nt_panel *sharp_nt; + int ret; + + dsi->lanes = 2; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_HSE | + MIPI_DSI_CLOCK_NON_CONTINUOUS | + MIPI_DSI_MODE_EOT_PACKET; + + sharp_nt = devm_kzalloc(&dsi->dev, sizeof(*sharp_nt), GFP_KERNEL); + if (!sharp_nt) + return -ENOMEM; + + mipi_dsi_set_drvdata(dsi, sharp_nt); + + sharp_nt->dsi = dsi; + + ret = sharp_nt_panel_add(sharp_nt); + if (ret < 0) + return ret; + + return mipi_dsi_attach(dsi); +} + +static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi) +{ + struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi); + int ret; + + ret = sharp_nt_panel_disable(&sharp_nt->base); + if (ret < 0) + dev_err(&dsi->dev, "failed to disable panel: %d\n", ret); + + ret = mipi_dsi_detach(dsi); + if (ret < 0) + dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); + + drm_panel_detach(&sharp_nt->base); + sharp_nt_panel_del(sharp_nt); + + return 0; +} + +static void sharp_nt_panel_shutdown(struct mipi_dsi_device *dsi) +{ + struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi); + + sharp_nt_panel_disable(&sharp_nt->base); +} + +static const struct of_device_id sharp_nt_of_match[] = { + { .compatible = "sharp,ls043t1le01-qhd", }, + { } +}; +MODULE_DEVICE_TABLE(of, sharp_nt_of_match); + +static struct mipi_dsi_driver sharp_nt_panel_driver = { + .driver = { + .name = "panel-sharp-ls043t1le01-qhd", + .of_match_table = sharp_nt_of_match, + }, + .probe = sharp_nt_panel_probe, + .remove = sharp_nt_panel_remove, + .shutdown = sharp_nt_panel_shutdown, +}; +module_mipi_dsi_driver(sharp_nt_panel_driver); + +MODULE_AUTHOR("Werner Johansson <werner.johansson@sonymobile.com>"); +MODULE_DESCRIPTION("Sharp LS043T1LE01 NT35565-based qHD (540x960) video mode panel driver"); +MODULE_LICENSE("GPL v2");