On Fri, Oct 30, 2015 at 5:38 PM, <bjorn@xxxxxxx> wrote: Ping? > From: Werner Johansson <werner.johansson@xxxxxxxxxxxxxx> > > This adds support for the Panasonic panel found in some Xperia Z2 > tablets. > > Signed-off-by: Werner Johansson <werner.johansson@xxxxxxxxxxxxxx> > Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx> > --- > drivers/gpu/drm/panel/Kconfig | 10 + > drivers/gpu/drm/panel/Makefile | 1 + > .../gpu/drm/panel/panel-panasonic-vvx10f034n00.c | 334 +++++++++++++++++++++ > 3 files changed, 345 insertions(+) > create mode 100644 drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c > > diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig > index 7d4704b..77a20d6 100644 > --- a/drivers/gpu/drm/panel/Kconfig > +++ b/drivers/gpu/drm/panel/Kconfig > @@ -51,4 +51,14 @@ 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_PANASONIC_VVX10F034N00 > + tristate "Panasonic VVX10F034N00 1920x1200 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 Panasonic VVX10F034N00 > + WUXGA (1920x1200) Novatek NT1397-based DSI panel as found in some > + Xperia Z2 tablets > + > endmenu > diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile > index d0f016d..a2ca8ff 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_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o > diff --git a/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c b/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c > new file mode 100644 > index 0000000..7f915f7 > --- /dev/null > +++ b/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c > @@ -0,0 +1,334 @@ > +/* > + * Copyright (C) 2015 Red Hat > + * Copyright (C) 2015 Sony Mobile Communications Inc. > + * Author: Werner Johansson <werner.johansson@xxxxxxxxxxxxxx> > + * > + * Based on AUO panel driver by Rob Clark <robdclark@xxxxxxxxx> > + * > + * 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/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> > + > +/* > + * When power is turned off to this panel a minimum off time of 500ms has to be > + * observed before powering back on as there's no external reset pin. Keep > + * track of earliest wakeup time and delay subsequent prepare call accordingly > + */ > +#define MIN_POFF_MS (500) > + > +struct wuxga_nt_panel { > + struct drm_panel base; > + struct mipi_dsi_device *dsi; > + > + struct backlight_device *backlight; > + struct regulator *supply; > + > + bool prepared; > + bool enabled; > + > + ktime_t earliest_wake; > + > + const struct drm_display_mode *mode; > +}; > + > +static inline struct wuxga_nt_panel *to_wuxga_nt_panel(struct drm_panel *panel) > +{ > + return container_of(panel, struct wuxga_nt_panel, base); > +} > + > +static int wuxga_nt_panel_on(struct wuxga_nt_panel *wuxga_nt) > +{ > + struct mipi_dsi_device *dsi = wuxga_nt->dsi; > + int ret; > + > + ret = mipi_dsi_turn_on_peripheral(dsi); > + if (ret < 0) > + return ret; > + > + return 0; > +} > + > +static int wuxga_nt_panel_disable(struct drm_panel *panel) > +{ > + struct wuxga_nt_panel *wuxga_nt = to_wuxga_nt_panel(panel); > + > + if (!wuxga_nt->enabled) > + return 0; > + > + mipi_dsi_shutdown_peripheral(wuxga_nt->dsi); > + > + if (wuxga_nt->backlight) { > + wuxga_nt->backlight->props.power = FB_BLANK_POWERDOWN; > + wuxga_nt->backlight->props.state |= BL_CORE_FBBLANK; > + backlight_update_status(wuxga_nt->backlight); > + } > + > + wuxga_nt->enabled = false; > + > + return 0; > +} > + > +static int wuxga_nt_panel_unprepare(struct drm_panel *panel) > +{ > + struct wuxga_nt_panel *wuxga_nt = to_wuxga_nt_panel(panel); > + > + if (!wuxga_nt->prepared) > + return 0; > + > + regulator_disable(wuxga_nt->supply); > + wuxga_nt->earliest_wake = ktime_add_ms(ktime_get_real(), MIN_POFF_MS); > + wuxga_nt->prepared = false; > + > + return 0; > +} > + > +static int wuxga_nt_panel_prepare(struct drm_panel *panel) > +{ > + struct wuxga_nt_panel *wuxga_nt = to_wuxga_nt_panel(panel); > + int ret; > + s64 enablewait; > + > + if (wuxga_nt->prepared) > + return 0; > + > + /* > + * If the user re-enabled the panel before the required off-time then > + * we need to wait the remaining period before re-enabling regulator > + */ > + enablewait = ktime_ms_delta(wuxga_nt->earliest_wake, ktime_get_real()); > + > + /* Sanity check, this should never happen */ > + if (enablewait > MIN_POFF_MS) > + enablewait = MIN_POFF_MS; > + > + if (enablewait > 0) > + msleep(enablewait); > + > + ret = regulator_enable(wuxga_nt->supply); > + if (ret < 0) > + return ret; > + > + /* > + * A minimum delay of 250ms is required after power-up until commands > + * can be sent > + */ > + msleep(250); > + > + ret = wuxga_nt_panel_on(wuxga_nt); > + if (ret < 0) { > + dev_err(panel->dev, "failed to set panel on: %d\n", ret); > + goto poweroff; > + } > + > + wuxga_nt->prepared = true; > + > + return 0; > + > +poweroff: > + regulator_disable(wuxga_nt->supply); > + > + return ret; > +} > + > +static int wuxga_nt_panel_enable(struct drm_panel *panel) > +{ > + struct wuxga_nt_panel *wuxga_nt = to_wuxga_nt_panel(panel); > + > + if (wuxga_nt->enabled) > + return 0; > + > + if (wuxga_nt->backlight) { > + wuxga_nt->backlight->props.power = FB_BLANK_UNBLANK; > + wuxga_nt->backlight->props.state &= ~BL_CORE_FBBLANK; > + backlight_update_status(wuxga_nt->backlight); > + } > + > + wuxga_nt->enabled = true; > + > + return 0; > +} > + > +static const struct drm_display_mode default_mode = { > + .clock = 164402, > + .hdisplay = 1920, > + .hsync_start = 1920 + 152, > + .hsync_end = 1920 + 152 + 52, > + .htotal = 1920 + 152 + 52 + 20, > + .vdisplay = 1200, > + .vsync_start = 1200 + 24, > + .vsync_end = 1200 + 24 + 6, > + .vtotal = 1200 + 24 + 6 + 48, > + .vrefresh = 60, > +}; > + > +static int wuxga_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 = 217; > + panel->connector->display_info.height_mm = 136; > + > + return 1; > +} > + > +static const struct drm_panel_funcs wuxga_nt_panel_funcs = { > + .disable = wuxga_nt_panel_disable, > + .unprepare = wuxga_nt_panel_unprepare, > + .prepare = wuxga_nt_panel_prepare, > + .enable = wuxga_nt_panel_enable, > + .get_modes = wuxga_nt_panel_get_modes, > +}; > + > +static const struct of_device_id wuxga_nt_of_match[] = { > + { .compatible = "panasonic,vvx10f034n00", }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, wuxga_nt_of_match); > + > +static int wuxga_nt_panel_add(struct wuxga_nt_panel *wuxga_nt) > +{ > + struct device *dev = &wuxga_nt->dsi->dev; > + struct device_node *np; > + int ret; > + > + wuxga_nt->mode = &default_mode; > + > + wuxga_nt->supply = devm_regulator_get(dev, "power"); > + if (IS_ERR(wuxga_nt->supply)) > + return PTR_ERR(wuxga_nt->supply); > + > + np = of_parse_phandle(dev->of_node, "backlight", 0); > + if (np) { > + wuxga_nt->backlight = of_find_backlight_by_node(np); > + of_node_put(np); > + > + if (!wuxga_nt->backlight) > + return -EPROBE_DEFER; > + } > + > + drm_panel_init(&wuxga_nt->base); > + wuxga_nt->base.funcs = &wuxga_nt_panel_funcs; > + wuxga_nt->base.dev = &wuxga_nt->dsi->dev; > + > + ret = drm_panel_add(&wuxga_nt->base); > + if (ret < 0) > + goto put_backlight; > + > + return 0; > + > +put_backlight: > + if (wuxga_nt->backlight) > + put_device(&wuxga_nt->backlight->dev); > + > + return ret; > +} > + > +static void wuxga_nt_panel_del(struct wuxga_nt_panel *wuxga_nt) > +{ > + if (wuxga_nt->base.dev) > + drm_panel_remove(&wuxga_nt->base); > + > + if (wuxga_nt->backlight) > + put_device(&wuxga_nt->backlight->dev); > +} > + > +static int wuxga_nt_panel_probe(struct mipi_dsi_device *dsi) > +{ > + struct wuxga_nt_panel *wuxga_nt; > + int ret; > + > + dsi->lanes = 4; > + 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_LPM; > + > + wuxga_nt = devm_kzalloc(&dsi->dev, sizeof(*wuxga_nt), GFP_KERNEL); > + if (!wuxga_nt) > + return -ENOMEM; > + > + mipi_dsi_set_drvdata(dsi, wuxga_nt); > + > + wuxga_nt->dsi = dsi; > + > + ret = wuxga_nt_panel_add(wuxga_nt); > + if (ret < 0) > + return ret; > + > + return mipi_dsi_attach(dsi); > +} > + > +static int wuxga_nt_panel_remove(struct mipi_dsi_device *dsi) > +{ > + struct wuxga_nt_panel *wuxga_nt = mipi_dsi_get_drvdata(dsi); > + int ret; > + > + ret = wuxga_nt_panel_disable(&wuxga_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(&wuxga_nt->base); > + wuxga_nt_panel_del(wuxga_nt); > + > + return 0; > +} > + > +static void wuxga_nt_panel_shutdown(struct mipi_dsi_device *dsi) > +{ > + struct wuxga_nt_panel *wuxga_nt = mipi_dsi_get_drvdata(dsi); > + > + wuxga_nt_panel_disable(&wuxga_nt->base); > +} > + > +static struct mipi_dsi_driver wuxga_nt_panel_driver = { > + .driver = { > + .name = "panel-panasonic-vvx10f034n00", > + .of_match_table = wuxga_nt_of_match, > + }, > + .probe = wuxga_nt_panel_probe, > + .remove = wuxga_nt_panel_remove, > + .shutdown = wuxga_nt_panel_shutdown, > +}; > +module_mipi_dsi_driver(wuxga_nt_panel_driver); > + > +MODULE_AUTHOR("Werner Johansson <werner.johansson@xxxxxxxxxxxxxx>"); > +MODULE_DESCRIPTION("Panasonic VVX10F034N00 Novatek NT1397-based WUXGA (1920x1200) video mode panel driver"); > +MODULE_LICENSE("GPL v2"); > -- > 2.3.2 (Apple Git-55) > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
