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 --- 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 6d64c7bb908b..7ee9c9aa857a 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -43,4 +43,13 @@ 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 4b2a0430804b..13ccdcc47e32 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -2,3 +2,4 @@ obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o obj-$(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..481f4cdfc8ad --- /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-vid", }, + { } +}; +MODULE_DEVICE_TABLE(of, sharp_nt_of_match); + +static struct mipi_dsi_driver sharp_nt_panel_driver = { + .driver = { + .name = "panel-sharp-ls043t1le01-qhd-video", + .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");