* [PATCH v2 0/3] drm/panel: Support Rocktech jh057n00900 DSI panel @ 2019-03-01 13:02 ` Guido Günther 0 siblings, 0 replies; 10+ messages in thread From: Guido Günther @ 2019-03-01 13:02 UTC (permalink / raw) To: Thierry Reding, David Airlie, Daniel Vetter, linux-kernel, dri-devel, Sam Ravnborg It's a 5.5" 720x1440 TFT LCD MIPI DSI panel with built in touchscreen and backlight as found in the Librem 5 devkit. These patches are against linux next as of 2019-02-08. Changes from v1 * As per review comments from Sam Ravnborg * Make SPDX-License-Identifier match MODULE_LICENSE * Sort include files alphabetically * Drop drmP.h and use individual includes * Drop superfuous 'x' in mode printout on error path * Allpixelson_set: Add proper space around '*' * Drop superfluous put_device(&ctx->backlight->dev); * Add /* Sentinel */ in jh057n_of_match * Drop jh057n->enabled * Drop drm_display_info_set_bus_formats * Kconfig: Depend on BACKLIGHT_CLASS_DEVICE which somehow got lost * Move jh057n_enable close to jh057n_disable Guido Günther (3): dt-bindings: Add vendor prefix for ROCKTECH DISPLAYS LIMITED dt-bindings: Add Rocktech jh057n00900 panel bindings drm/panel: Add Rocktech jh057n00900 panel driver .../display/panel/rocktech,jh057n00900.txt | 18 + .../devicetree/bindings/vendor-prefixes.txt | 1 + drivers/gpu/drm/panel/Kconfig | 13 + drivers/gpu/drm/panel/Makefile | 1 + .../drm/panel/panel-rocktech-jh057n00900.c | 385 ++++++++++++++++++ 5 files changed, 418 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt create mode 100644 drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c -- 2.20.1 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v2 0/3] drm/panel: Support Rocktech jh057n00900 DSI panel @ 2019-03-01 13:02 ` Guido Günther 0 siblings, 0 replies; 10+ messages in thread From: Guido Günther @ 2019-03-01 13:02 UTC (permalink / raw) To: Thierry Reding, David Airlie, Daniel Vetter, linux-kernel, dri-devel, Sam Ravnborg It's a 5.5" 720x1440 TFT LCD MIPI DSI panel with built in touchscreen and backlight as found in the Librem 5 devkit. These patches are against linux next as of 2019-02-08. Changes from v1 * As per review comments from Sam Ravnborg * Make SPDX-License-Identifier match MODULE_LICENSE * Sort include files alphabetically * Drop drmP.h and use individual includes * Drop superfuous 'x' in mode printout on error path * Allpixelson_set: Add proper space around '*' * Drop superfluous put_device(&ctx->backlight->dev); * Add /* Sentinel */ in jh057n_of_match * Drop jh057n->enabled * Drop drm_display_info_set_bus_formats * Kconfig: Depend on BACKLIGHT_CLASS_DEVICE which somehow got lost * Move jh057n_enable close to jh057n_disable Guido Günther (3): dt-bindings: Add vendor prefix for ROCKTECH DISPLAYS LIMITED dt-bindings: Add Rocktech jh057n00900 panel bindings drm/panel: Add Rocktech jh057n00900 panel driver .../display/panel/rocktech,jh057n00900.txt | 18 + .../devicetree/bindings/vendor-prefixes.txt | 1 + drivers/gpu/drm/panel/Kconfig | 13 + drivers/gpu/drm/panel/Makefile | 1 + .../drm/panel/panel-rocktech-jh057n00900.c | 385 ++++++++++++++++++ 5 files changed, 418 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt create mode 100644 drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c -- 2.20.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel ^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v2 1/3] dt-bindings: Add vendor prefix for ROCKTECH DISPLAYS LIMITED 2019-03-01 13:02 ` Guido Günther @ 2019-03-01 13:02 ` Guido Günther -1 siblings, 0 replies; 10+ messages in thread From: Guido Günther @ 2019-03-01 13:02 UTC (permalink / raw) To: Thierry Reding, David Airlie, Daniel Vetter, linux-kernel, dri-devel, Sam Ravnborg Add ROCKTECH DISPLAYS LIMITED (https://rocktech.com.hk) LCD panel supplier. Signed-off-by: Guido Günther <agx@sigxcpu.org> --- Documentation/devicetree/bindings/vendor-prefixes.txt | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 413c6f30ce88..cc24619a4249 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -338,6 +338,7 @@ ricoh Ricoh Co. Ltd. rikomagic Rikomagic Tech Corp. Ltd riscv RISC-V Foundation rockchip Fuzhou Rockchip Electronics Co., Ltd +rocktech ROCKTECH DISPLAYS LIMITED rohm ROHM Semiconductor Co., Ltd roofull Shenzhen Roofull Technology Co, Ltd samsung Samsung Semiconductor -- 2.20.1 ^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v2 1/3] dt-bindings: Add vendor prefix for ROCKTECH DISPLAYS LIMITED @ 2019-03-01 13:02 ` Guido Günther 0 siblings, 0 replies; 10+ messages in thread From: Guido Günther @ 2019-03-01 13:02 UTC (permalink / raw) To: Thierry Reding, David Airlie, Daniel Vetter, linux-kernel, dri-devel, Sam Ravnborg Add ROCKTECH DISPLAYS LIMITED (https://rocktech.com.hk) LCD panel supplier. Signed-off-by: Guido Günther <agx@sigxcpu.org> --- Documentation/devicetree/bindings/vendor-prefixes.txt | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 413c6f30ce88..cc24619a4249 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -338,6 +338,7 @@ ricoh Ricoh Co. Ltd. rikomagic Rikomagic Tech Corp. Ltd riscv RISC-V Foundation rockchip Fuzhou Rockchip Electronics Co., Ltd +rocktech ROCKTECH DISPLAYS LIMITED rohm ROHM Semiconductor Co., Ltd roofull Shenzhen Roofull Technology Co, Ltd samsung Samsung Semiconductor -- 2.20.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel ^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v2 2/3] dt-bindings: Add Rocktech jh057n00900 panel bindings 2019-03-01 13:02 ` Guido Günther @ 2019-03-01 13:02 ` Guido Günther -1 siblings, 0 replies; 10+ messages in thread From: Guido Günther @ 2019-03-01 13:02 UTC (permalink / raw) To: Thierry Reding, David Airlie, Daniel Vetter, linux-kernel, dri-devel, Sam Ravnborg The Rocktec jh057n00900 is a 5.5" MIPI DSI video mode panel with a 720x1440 resolution and a built in backlight. Signed-off-by: Guido Günther <agx@sigxcpu.org> --- .../display/panel/rocktech,jh057n00900.txt | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt diff --git a/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt new file mode 100644 index 000000000000..32f4001d2d6f --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt @@ -0,0 +1,18 @@ +Rocktech jh057n00900 5.5" 720x1440 TFT LCD panel + +Required properties: +- compatible: should be "rocktech,jh057n00900" +- reg: DSI virtual channel of the peripheral +- reset-gpios: panel reset gpio +- backlight: phandle of the backlight device attached to the panel + +Example: + + &mipi_dsi { + panel { + compatible = "rocktech,jh057n00900"; + reg = <0>; + backlight = <&backlight>; + reset-gpios = <&gpio3 13 GPIO_ACTIVE_LOW>; + }; + }; -- 2.20.1 ^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v2 2/3] dt-bindings: Add Rocktech jh057n00900 panel bindings @ 2019-03-01 13:02 ` Guido Günther 0 siblings, 0 replies; 10+ messages in thread From: Guido Günther @ 2019-03-01 13:02 UTC (permalink / raw) To: Thierry Reding, David Airlie, Daniel Vetter, linux-kernel, dri-devel, Sam Ravnborg The Rocktec jh057n00900 is a 5.5" MIPI DSI video mode panel with a 720x1440 resolution and a built in backlight. Signed-off-by: Guido Günther <agx@sigxcpu.org> --- .../display/panel/rocktech,jh057n00900.txt | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt diff --git a/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt new file mode 100644 index 000000000000..32f4001d2d6f --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt @@ -0,0 +1,18 @@ +Rocktech jh057n00900 5.5" 720x1440 TFT LCD panel + +Required properties: +- compatible: should be "rocktech,jh057n00900" +- reg: DSI virtual channel of the peripheral +- reset-gpios: panel reset gpio +- backlight: phandle of the backlight device attached to the panel + +Example: + + &mipi_dsi { + panel { + compatible = "rocktech,jh057n00900"; + reg = <0>; + backlight = <&backlight>; + reset-gpios = <&gpio3 13 GPIO_ACTIVE_LOW>; + }; + }; -- 2.20.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel ^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v2 3/3] drm/panel: Add Rocktech jh057n00900 panel driver 2019-03-01 13:02 ` Guido Günther @ 2019-03-01 13:02 ` Guido Günther -1 siblings, 0 replies; 10+ messages in thread From: Guido Günther @ 2019-03-01 13:02 UTC (permalink / raw) To: Thierry Reding, David Airlie, Daniel Vetter, linux-kernel, dri-devel, Sam Ravnborg Support Rocktech jh057n00900 5.5" 720x1440 TFT LCD panel. It is a MIPI DSI video mode panel. The panel seems to use a Sitronix ST7703 look alike (most of the commands look similar to the ST7703's data sheet but use a different number of parameters). The initial version of the DSI init sequence (including sleeps) were provided by the vendor. Sleeps were reduced considerably though to speed up initialization. Signed-off-by: Guido Günther <agx@sigxcpu.org> Cc: guido.gunther@puri.sm --- drivers/gpu/drm/panel/Kconfig | 13 + drivers/gpu/drm/panel/Makefile | 1 + .../drm/panel/panel-rocktech-jh057n00900.c | 385 ++++++++++++++++++ 3 files changed, 399 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 3e070153ef21..42f541fe57ae 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -149,6 +149,19 @@ config DRM_PANEL_RAYDIUM_RM68200 Say Y here if you want to enable support for Raydium RM68200 720x1280 DSI video mode panel. +config DRM_PANEL_ROCKTECH_JH057N00900 + tristate "Rocktech JH057N00900 MIPI touchscreen 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 Rocktech JH057N00900 + MIPI DSI panel as e.g. used in the Librem 5 devkit. It has a + resolution of 720x1440 pixels, a built in backlight and touch + controller. + Touch input support is provided by the goodix driver and needs to be + selected separately. + config DRM_PANEL_SAMSUNG_S6D16D0 tristate "Samsung S6D16D0 DSI video mode panel" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index e7ab71968bbf..902e871059d0 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o +obj-$(CONFIG_DRM_PANEL_ROCKTECH_JH057N00900) += panel-rocktech-jh057n00900.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D16D0) += panel-samsung-s6d16d0.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c new file mode 100644 index 000000000000..7df72040a90d --- /dev/null +++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c @@ -0,0 +1,385 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Rockteck jh057n00900 5.5" MIPI-DSI panel driver + * + * Copyright (C) Purism SPC 2019 + */ + +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> +#include <drm/drm_print.h> +#include <linux/backlight.h> +#include <linux/debugfs.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/media-bus-format.h> +#include <linux/module.h> +#include <video/display_timing.h> +#include <video/mipi_display.h> + +#define DRV_NAME "jh057n00900" + +/* Manufacturer specific Commands send via DSI */ +#define ST7703_CMD_ALL_PIXEL_OFF 0x22 +#define ST7703_CMD_ALL_PIXEL_ON 0x23 +#define ST7703_CMD_SETDISP 0xB2 +#define ST7703_CMD_SETRGBIF 0xB3 +#define ST7703_CMD_SETCYC 0xB4 +#define ST7703_CMD_SETBGP 0xB5 +#define ST7703_CMD_SETVCOM 0xB6 +#define ST7703_CMD_SETOTP 0xB7 +#define ST7703_CMD_SETPOWER_EXT 0xB8 +#define ST7703_CMD_SETEXTC 0xB9 +#define ST7703_CMD_SETMIPI 0xBA +#define ST7703_CMD_SETVDC 0xBC +#define ST7703_CMD_SETSCR 0xC0 +#define ST7703_CMD_SETPOWER 0xC1 +#define ST7703_CMD_SETPANEL 0xCC +#define ST7703_CMD_SETGAMMA 0xE0 +#define ST7703_CMD_SETEQ 0xE3 +#define ST7703_CMD_SETGIP1 0xE9 +#define ST7703_CMD_SETGIP2 0xEA + +struct jh057n { + struct device *dev; + struct drm_panel panel; + struct gpio_desc *reset_gpio; + struct backlight_device *backlight; + bool prepared; + + struct dentry *debugfs; +}; + +static inline struct jh057n *panel_to_jh057n(struct drm_panel *panel) +{ + return container_of(panel, struct jh057n, panel); +} + +#define dsi_generic_write_seq(dsi, seq...) do { \ + static const u8 d[] = { seq }; \ + int ret; \ + ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \ + if (ret < 0) \ + return ret; \ + } while (0) + +static int jh057n_init_sequence(struct jh057n *ctx) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + struct device *dev = ctx->dev; + int ret; + + /* + * Init sequence was supplied by the panel vendor. Most of the commands + * resemble the ST7703 but the number of parameters often don't match + * so it's likely a clone. + */ + dsi_generic_write_seq(dsi, ST7703_CMD_SETEXTC, + 0xF1, 0x12, 0x83); + dsi_generic_write_seq(dsi, ST7703_CMD_SETRGBIF, + 0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00, + 0x00, 0x00); + dsi_generic_write_seq(dsi, ST7703_CMD_SETSCR, + 0x73, 0x73, 0x50, 0x50, 0x00, 0x00, 0x08, 0x70, + 0x00); + dsi_generic_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E); + dsi_generic_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B); + dsi_generic_write_seq(dsi, ST7703_CMD_SETCYC, 0x80); + dsi_generic_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0x30); + dsi_generic_write_seq(dsi, ST7703_CMD_SETEQ, + 0x07, 0x07, 0x0B, 0x0B, 0x03, 0x0B, 0x00, 0x00, + 0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10); + dsi_generic_write_seq(dsi, ST7703_CMD_SETBGP, 0x08, 0x08); + msleep(20); + + dsi_generic_write_seq(dsi, ST7703_CMD_SETVCOM, 0x3F, 0x3F); + dsi_generic_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00); + dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP1, + 0x82, 0x10, 0x06, 0x05, 0x9E, 0x0A, 0xA5, 0x12, + 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38, + 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00, + 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64, + 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); + dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP2, + 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13, + 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x0A, + 0xA5, 0x00, 0x00, 0x00, 0x00); + dsi_generic_write_seq(dsi, ST7703_CMD_SETGAMMA, + 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41, 0x37, + 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10, 0x11, + 0x18, 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41, + 0x37, 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10, + 0x11, 0x18); + msleep(20); + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret < 0) { + DRM_DEV_ERROR(dev, "Failed to exit sleep mode"); + return ret; + } + /* Panel is operational 120 msec after reset */ + msleep(60); + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret) + return ret; + + DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done"); + return 0; +} + +static int jh057n_enable(struct drm_panel *panel) +{ + struct jh057n *ctx = panel_to_jh057n(panel); + + return backlight_enable(ctx->backlight); +} + +static int jh057n_disable(struct drm_panel *panel) +{ + struct jh057n *ctx = panel_to_jh057n(panel); + + return backlight_disable(ctx->backlight); +} + +static int jh057n_unprepare(struct drm_panel *panel) +{ + struct jh057n *ctx = panel_to_jh057n(panel); + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + + if (!ctx->prepared) + return 0; + + mipi_dsi_dcs_set_display_off(dsi); + ctx->prepared = false; + + return 0; +} + +static int jh057n_prepare(struct drm_panel *panel) +{ + struct jh057n *ctx = panel_to_jh057n(panel); + int ret; + + if (ctx->prepared) + return 0; + + DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel."); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(20, 40); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + msleep(20); + + ret = jh057n_init_sequence(ctx); + if (ret < 0) { + DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d", ret); + return ret; + } + + ctx->prepared = true; + + return 0; +} + +static const struct drm_display_mode default_mode = { + .hdisplay = 720, + .hsync_start = 720 + 90, + .hsync_end = 720 + 90 + 20, + .htotal = 720 + 90 + 20 + 20, + .vdisplay = 1440, + .vsync_start = 1440 + 20, + .vsync_end = 1440 + 20 + 4, + .vtotal = 1440 + 20 + 4 + 12, + .vrefresh = 60, + .clock = 75276, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 65, + .height_mm = 130, +}; + +static int jh057n_get_modes(struct drm_panel *panel) +{ + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(panel->drm, &default_mode); + if (!mode) { + DRM_ERROR("Failed to add mode %ux%u@%u", + default_mode.hdisplay, default_mode.vdisplay, + default_mode.vrefresh); + return -ENOMEM; + } + + drm_mode_set_name(mode); + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + panel->connector->display_info.width_mm = mode->width_mm; + panel->connector->display_info.height_mm = mode->height_mm; + drm_mode_probed_add(panel->connector, mode); + + return 1; +} + +static const struct drm_panel_funcs jh057n_drm_funcs = { + .disable = jh057n_disable, + .unprepare = jh057n_unprepare, + .prepare = jh057n_prepare, + .enable = jh057n_enable, + .get_modes = jh057n_get_modes, +}; + +static int allpixelson_set(void *data, u64 val) +{ + struct jh057n *ctx = data; + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + + DRM_DEV_DEBUG_DRIVER(ctx->dev, "Setting all pixels on"); + dsi_generic_write_seq(dsi, ST7703_CMD_ALL_PIXEL_ON); + msleep(val * 1000); + /* Reset the panel to get video back */ + drm_panel_disable(&ctx->panel); + drm_panel_unprepare(&ctx->panel); + drm_panel_prepare(&ctx->panel); + drm_panel_enable(&ctx->panel); + + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL, + allpixelson_set, "%llu\n"); + +static int jh057n_debugfs_init(struct jh057n *ctx) +{ + struct dentry *f; + + ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL); + if (!ctx->debugfs) + return -ENOMEM; + + f = debugfs_create_file("allpixelson", 0600, + ctx->debugfs, ctx, &allpixelson_fops); + if (!f) + return -ENOMEM; + + return 0; +} + +static void jh057n_debugfs_remove(struct jh057n *ctx) +{ + debugfs_remove_recursive(ctx->debugfs); + ctx->debugfs = NULL; +} + +static int jh057n_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct jh057n *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset_gpio)) { + DRM_DEV_ERROR(dev, "cannot get reset gpio"); + return PTR_ERR(ctx->reset_gpio); + } + + mipi_dsi_set_drvdata(dsi, ctx); + + ctx->dev = dev; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE; + + ctx->backlight = devm_of_find_backlight(dev); + if (IS_ERR(ctx->backlight)) + return PTR_ERR(ctx->backlight); + + drm_panel_init(&ctx->panel); + ctx->panel.dev = dev; + ctx->panel.funcs = &jh057n_drm_funcs; + + drm_panel_add(&ctx->panel); + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?"); + drm_panel_remove(&ctx->panel); + return ret; + } + + DRM_INFO(DRV_NAME "_panel %ux%u@%u %ubpp dsi %udl - ready", + default_mode.hdisplay, default_mode.vdisplay, + default_mode.vrefresh, + mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes); + + jh057n_debugfs_init(ctx); + return 0; +} + +static void jh057n_shutdown(struct mipi_dsi_device *dsi) +{ + struct jh057n *ctx = mipi_dsi_get_drvdata(dsi); + int ret; + + ret = jh057n_unprepare(&ctx->panel); + if (ret < 0) + DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n", + ret); + + ret = jh057n_disable(&ctx->panel); + if (ret < 0) + DRM_DEV_ERROR(&dsi->dev, "Failed to disable panel: %d\n", + ret); +} + +static int jh057n_remove(struct mipi_dsi_device *dsi) +{ + struct jh057n *ctx = mipi_dsi_get_drvdata(dsi); + int ret; + + jh057n_shutdown(dsi); + + ret = mipi_dsi_detach(dsi); + if (ret < 0) + DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n", + ret); + + drm_panel_remove(&ctx->panel); + + jh057n_debugfs_remove(ctx); + + return 0; +} + +static const struct of_device_id jh057n_of_match[] = { + { .compatible = "rocktech,jh057n00900" }, + { /* Sentinel */ } +}; +MODULE_DEVICE_TABLE(of, jh057n_of_match); + +static struct mipi_dsi_driver jh057n_driver = { + .probe = jh057n_probe, + .remove = jh057n_remove, + .shutdown = jh057n_shutdown, + .driver = { + .name = DRV_NAME "_panel", + .of_match_table = jh057n_of_match, + }, +}; +module_mipi_dsi_driver(jh057n_driver); + +MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>"); +MODULE_DESCRIPTION("DRM driver for Rocktech JH057N00900 MIPI DSI panel"); +MODULE_LICENSE("GPL v2"); -- 2.20.1 ^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v2 3/3] drm/panel: Add Rocktech jh057n00900 panel driver @ 2019-03-01 13:02 ` Guido Günther 0 siblings, 0 replies; 10+ messages in thread From: Guido Günther @ 2019-03-01 13:02 UTC (permalink / raw) To: Thierry Reding, David Airlie, Daniel Vetter, linux-kernel, dri-devel, Sam Ravnborg Support Rocktech jh057n00900 5.5" 720x1440 TFT LCD panel. It is a MIPI DSI video mode panel. The panel seems to use a Sitronix ST7703 look alike (most of the commands look similar to the ST7703's data sheet but use a different number of parameters). The initial version of the DSI init sequence (including sleeps) were provided by the vendor. Sleeps were reduced considerably though to speed up initialization. Signed-off-by: Guido Günther <agx@sigxcpu.org> Cc: guido.gunther@puri.sm --- drivers/gpu/drm/panel/Kconfig | 13 + drivers/gpu/drm/panel/Makefile | 1 + .../drm/panel/panel-rocktech-jh057n00900.c | 385 ++++++++++++++++++ 3 files changed, 399 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 3e070153ef21..42f541fe57ae 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -149,6 +149,19 @@ config DRM_PANEL_RAYDIUM_RM68200 Say Y here if you want to enable support for Raydium RM68200 720x1280 DSI video mode panel. +config DRM_PANEL_ROCKTECH_JH057N00900 + tristate "Rocktech JH057N00900 MIPI touchscreen 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 Rocktech JH057N00900 + MIPI DSI panel as e.g. used in the Librem 5 devkit. It has a + resolution of 720x1440 pixels, a built in backlight and touch + controller. + Touch input support is provided by the goodix driver and needs to be + selected separately. + config DRM_PANEL_SAMSUNG_S6D16D0 tristate "Samsung S6D16D0 DSI video mode panel" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index e7ab71968bbf..902e871059d0 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o +obj-$(CONFIG_DRM_PANEL_ROCKTECH_JH057N00900) += panel-rocktech-jh057n00900.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D16D0) += panel-samsung-s6d16d0.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c new file mode 100644 index 000000000000..7df72040a90d --- /dev/null +++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c @@ -0,0 +1,385 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Rockteck jh057n00900 5.5" MIPI-DSI panel driver + * + * Copyright (C) Purism SPC 2019 + */ + +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> +#include <drm/drm_print.h> +#include <linux/backlight.h> +#include <linux/debugfs.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/media-bus-format.h> +#include <linux/module.h> +#include <video/display_timing.h> +#include <video/mipi_display.h> + +#define DRV_NAME "jh057n00900" + +/* Manufacturer specific Commands send via DSI */ +#define ST7703_CMD_ALL_PIXEL_OFF 0x22 +#define ST7703_CMD_ALL_PIXEL_ON 0x23 +#define ST7703_CMD_SETDISP 0xB2 +#define ST7703_CMD_SETRGBIF 0xB3 +#define ST7703_CMD_SETCYC 0xB4 +#define ST7703_CMD_SETBGP 0xB5 +#define ST7703_CMD_SETVCOM 0xB6 +#define ST7703_CMD_SETOTP 0xB7 +#define ST7703_CMD_SETPOWER_EXT 0xB8 +#define ST7703_CMD_SETEXTC 0xB9 +#define ST7703_CMD_SETMIPI 0xBA +#define ST7703_CMD_SETVDC 0xBC +#define ST7703_CMD_SETSCR 0xC0 +#define ST7703_CMD_SETPOWER 0xC1 +#define ST7703_CMD_SETPANEL 0xCC +#define ST7703_CMD_SETGAMMA 0xE0 +#define ST7703_CMD_SETEQ 0xE3 +#define ST7703_CMD_SETGIP1 0xE9 +#define ST7703_CMD_SETGIP2 0xEA + +struct jh057n { + struct device *dev; + struct drm_panel panel; + struct gpio_desc *reset_gpio; + struct backlight_device *backlight; + bool prepared; + + struct dentry *debugfs; +}; + +static inline struct jh057n *panel_to_jh057n(struct drm_panel *panel) +{ + return container_of(panel, struct jh057n, panel); +} + +#define dsi_generic_write_seq(dsi, seq...) do { \ + static const u8 d[] = { seq }; \ + int ret; \ + ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \ + if (ret < 0) \ + return ret; \ + } while (0) + +static int jh057n_init_sequence(struct jh057n *ctx) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + struct device *dev = ctx->dev; + int ret; + + /* + * Init sequence was supplied by the panel vendor. Most of the commands + * resemble the ST7703 but the number of parameters often don't match + * so it's likely a clone. + */ + dsi_generic_write_seq(dsi, ST7703_CMD_SETEXTC, + 0xF1, 0x12, 0x83); + dsi_generic_write_seq(dsi, ST7703_CMD_SETRGBIF, + 0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00, + 0x00, 0x00); + dsi_generic_write_seq(dsi, ST7703_CMD_SETSCR, + 0x73, 0x73, 0x50, 0x50, 0x00, 0x00, 0x08, 0x70, + 0x00); + dsi_generic_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E); + dsi_generic_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B); + dsi_generic_write_seq(dsi, ST7703_CMD_SETCYC, 0x80); + dsi_generic_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0x30); + dsi_generic_write_seq(dsi, ST7703_CMD_SETEQ, + 0x07, 0x07, 0x0B, 0x0B, 0x03, 0x0B, 0x00, 0x00, + 0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10); + dsi_generic_write_seq(dsi, ST7703_CMD_SETBGP, 0x08, 0x08); + msleep(20); + + dsi_generic_write_seq(dsi, ST7703_CMD_SETVCOM, 0x3F, 0x3F); + dsi_generic_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00); + dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP1, + 0x82, 0x10, 0x06, 0x05, 0x9E, 0x0A, 0xA5, 0x12, + 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38, + 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00, + 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64, + 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); + dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP2, + 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13, + 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x0A, + 0xA5, 0x00, 0x00, 0x00, 0x00); + dsi_generic_write_seq(dsi, ST7703_CMD_SETGAMMA, + 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41, 0x37, + 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10, 0x11, + 0x18, 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41, + 0x37, 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10, + 0x11, 0x18); + msleep(20); + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret < 0) { + DRM_DEV_ERROR(dev, "Failed to exit sleep mode"); + return ret; + } + /* Panel is operational 120 msec after reset */ + msleep(60); + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret) + return ret; + + DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done"); + return 0; +} + +static int jh057n_enable(struct drm_panel *panel) +{ + struct jh057n *ctx = panel_to_jh057n(panel); + + return backlight_enable(ctx->backlight); +} + +static int jh057n_disable(struct drm_panel *panel) +{ + struct jh057n *ctx = panel_to_jh057n(panel); + + return backlight_disable(ctx->backlight); +} + +static int jh057n_unprepare(struct drm_panel *panel) +{ + struct jh057n *ctx = panel_to_jh057n(panel); + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + + if (!ctx->prepared) + return 0; + + mipi_dsi_dcs_set_display_off(dsi); + ctx->prepared = false; + + return 0; +} + +static int jh057n_prepare(struct drm_panel *panel) +{ + struct jh057n *ctx = panel_to_jh057n(panel); + int ret; + + if (ctx->prepared) + return 0; + + DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel."); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(20, 40); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + msleep(20); + + ret = jh057n_init_sequence(ctx); + if (ret < 0) { + DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d", ret); + return ret; + } + + ctx->prepared = true; + + return 0; +} + +static const struct drm_display_mode default_mode = { + .hdisplay = 720, + .hsync_start = 720 + 90, + .hsync_end = 720 + 90 + 20, + .htotal = 720 + 90 + 20 + 20, + .vdisplay = 1440, + .vsync_start = 1440 + 20, + .vsync_end = 1440 + 20 + 4, + .vtotal = 1440 + 20 + 4 + 12, + .vrefresh = 60, + .clock = 75276, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 65, + .height_mm = 130, +}; + +static int jh057n_get_modes(struct drm_panel *panel) +{ + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(panel->drm, &default_mode); + if (!mode) { + DRM_ERROR("Failed to add mode %ux%u@%u", + default_mode.hdisplay, default_mode.vdisplay, + default_mode.vrefresh); + return -ENOMEM; + } + + drm_mode_set_name(mode); + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + panel->connector->display_info.width_mm = mode->width_mm; + panel->connector->display_info.height_mm = mode->height_mm; + drm_mode_probed_add(panel->connector, mode); + + return 1; +} + +static const struct drm_panel_funcs jh057n_drm_funcs = { + .disable = jh057n_disable, + .unprepare = jh057n_unprepare, + .prepare = jh057n_prepare, + .enable = jh057n_enable, + .get_modes = jh057n_get_modes, +}; + +static int allpixelson_set(void *data, u64 val) +{ + struct jh057n *ctx = data; + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + + DRM_DEV_DEBUG_DRIVER(ctx->dev, "Setting all pixels on"); + dsi_generic_write_seq(dsi, ST7703_CMD_ALL_PIXEL_ON); + msleep(val * 1000); + /* Reset the panel to get video back */ + drm_panel_disable(&ctx->panel); + drm_panel_unprepare(&ctx->panel); + drm_panel_prepare(&ctx->panel); + drm_panel_enable(&ctx->panel); + + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL, + allpixelson_set, "%llu\n"); + +static int jh057n_debugfs_init(struct jh057n *ctx) +{ + struct dentry *f; + + ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL); + if (!ctx->debugfs) + return -ENOMEM; + + f = debugfs_create_file("allpixelson", 0600, + ctx->debugfs, ctx, &allpixelson_fops); + if (!f) + return -ENOMEM; + + return 0; +} + +static void jh057n_debugfs_remove(struct jh057n *ctx) +{ + debugfs_remove_recursive(ctx->debugfs); + ctx->debugfs = NULL; +} + +static int jh057n_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct jh057n *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset_gpio)) { + DRM_DEV_ERROR(dev, "cannot get reset gpio"); + return PTR_ERR(ctx->reset_gpio); + } + + mipi_dsi_set_drvdata(dsi, ctx); + + ctx->dev = dev; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE; + + ctx->backlight = devm_of_find_backlight(dev); + if (IS_ERR(ctx->backlight)) + return PTR_ERR(ctx->backlight); + + drm_panel_init(&ctx->panel); + ctx->panel.dev = dev; + ctx->panel.funcs = &jh057n_drm_funcs; + + drm_panel_add(&ctx->panel); + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?"); + drm_panel_remove(&ctx->panel); + return ret; + } + + DRM_INFO(DRV_NAME "_panel %ux%u@%u %ubpp dsi %udl - ready", + default_mode.hdisplay, default_mode.vdisplay, + default_mode.vrefresh, + mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes); + + jh057n_debugfs_init(ctx); + return 0; +} + +static void jh057n_shutdown(struct mipi_dsi_device *dsi) +{ + struct jh057n *ctx = mipi_dsi_get_drvdata(dsi); + int ret; + + ret = jh057n_unprepare(&ctx->panel); + if (ret < 0) + DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n", + ret); + + ret = jh057n_disable(&ctx->panel); + if (ret < 0) + DRM_DEV_ERROR(&dsi->dev, "Failed to disable panel: %d\n", + ret); +} + +static int jh057n_remove(struct mipi_dsi_device *dsi) +{ + struct jh057n *ctx = mipi_dsi_get_drvdata(dsi); + int ret; + + jh057n_shutdown(dsi); + + ret = mipi_dsi_detach(dsi); + if (ret < 0) + DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n", + ret); + + drm_panel_remove(&ctx->panel); + + jh057n_debugfs_remove(ctx); + + return 0; +} + +static const struct of_device_id jh057n_of_match[] = { + { .compatible = "rocktech,jh057n00900" }, + { /* Sentinel */ } +}; +MODULE_DEVICE_TABLE(of, jh057n_of_match); + +static struct mipi_dsi_driver jh057n_driver = { + .probe = jh057n_probe, + .remove = jh057n_remove, + .shutdown = jh057n_shutdown, + .driver = { + .name = DRV_NAME "_panel", + .of_match_table = jh057n_of_match, + }, +}; +module_mipi_dsi_driver(jh057n_driver); + +MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>"); +MODULE_DESCRIPTION("DRM driver for Rocktech JH057N00900 MIPI DSI panel"); +MODULE_LICENSE("GPL v2"); -- 2.20.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel ^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH v2 3/3] drm/panel: Add Rocktech jh057n00900 panel driver 2019-03-01 13:02 ` Guido Günther (?) @ 2019-03-01 22:39 ` Sam Ravnborg 2019-03-04 17:54 ` Guido Günther -1 siblings, 1 reply; 10+ messages in thread From: Sam Ravnborg @ 2019-03-01 22:39 UTC (permalink / raw) To: Guido Günther Cc: Thierry Reding, David Airlie, Daniel Vetter, linux-kernel, dri-devel Hi Guido. Thanks for addressing review comments in first round. Just a few nits in this follow-up. With these nits addressed: Reviewed-by: Sam Ravnborg <sam@ravnborg.org> On Fri, Mar 01, 2019 at 02:02:04PM +0100, Guido Günther wrote: > +#include <video/display_timing.h> This include file is, as far as I could tell, no longer used and can be dropped. > + > +static int jh057n_get_modes(struct drm_panel *panel) > +{ > + struct drm_display_mode *mode; > + > + mode = drm_mode_duplicate(panel->drm, &default_mode); > + if (!mode) { > + DRM_ERROR("Failed to add mode %ux%u@%u", > + default_mode.hdisplay, default_mode.vdisplay, > + default_mode.vrefresh); > + return -ENOMEM; Use DRM_DEV_ERROR() You can find dev via: panel->base.drm-dev > + > +static int jh057n_probe(struct mipi_dsi_device *dsi) > +{ > + struct device *dev = &dsi->dev; > + struct jh057n *ctx; > + int ret; > + > + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); > + if (!ctx) > + return -ENOMEM; > + > + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); > + if (IS_ERR(ctx->reset_gpio)) { > + DRM_DEV_ERROR(dev, "cannot get reset gpio"); > + return PTR_ERR(ctx->reset_gpio); > + } > + > + mipi_dsi_set_drvdata(dsi, ctx); > + > + ctx->dev = dev; > + > + dsi->lanes = 4; > + dsi->format = MIPI_DSI_FMT_RGB888; > + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | > + MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE; > + > + ctx->backlight = devm_of_find_backlight(dev); > + if (IS_ERR(ctx->backlight)) > + return PTR_ERR(ctx->backlight); > + > + drm_panel_init(&ctx->panel); > + ctx->panel.dev = dev; > + ctx->panel.funcs = &jh057n_drm_funcs; > + > + drm_panel_add(&ctx->panel); > + > + ret = mipi_dsi_attach(dsi); > + if (ret < 0) { > + DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?"); > + drm_panel_remove(&ctx->panel); > + return ret; > + } > + > + DRM_INFO(DRV_NAME "_panel %ux%u@%u %ubpp dsi %udl - ready", > + default_mode.hdisplay, default_mode.vdisplay, > + default_mode.vrefresh, > + mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes); You already have dev, so use DRM_DEV_INFO() and drop DRV_NAME > + > +static const struct of_device_id jh057n_of_match[] = { > + { .compatible = "rocktech,jh057n00900" }, > + { /* Sentinel */ } Lower case 's' (sorry, likely my bad) > + .probe = jh057n_probe, > + .remove = jh057n_remove, > + .shutdown = jh057n_shutdown, > + .driver = { > + .name = DRV_NAME "_panel", Drop "_panel" postfix. Other drivers do not use it. Sam ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v2 3/3] drm/panel: Add Rocktech jh057n00900 panel driver 2019-03-01 22:39 ` Sam Ravnborg @ 2019-03-04 17:54 ` Guido Günther 0 siblings, 0 replies; 10+ messages in thread From: Guido Günther @ 2019-03-04 17:54 UTC (permalink / raw) To: Sam Ravnborg Cc: Thierry Reding, David Airlie, Daniel Vetter, linux-kernel, dri-devel Hi, On Fri, Mar 01, 2019 at 11:39:06PM +0100, Sam Ravnborg wrote: > Hi Guido. > > Thanks for addressing review comments in first round. > Just a few nits in this follow-up. > With these nits addressed: > Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Thanks! I made all the suggested changes in v3, on top of that I prepended 'panel-rockteck-' to the driver name to be more consistent with other drivers. -- Guido > > On Fri, Mar 01, 2019 at 02:02:04PM +0100, Guido Günther wrote: > > > +#include <video/display_timing.h> > This include file is, as far as I could tell, no longer used and can be dropped. > > > + > > +static int jh057n_get_modes(struct drm_panel *panel) > > +{ > > + struct drm_display_mode *mode; > > + > > + mode = drm_mode_duplicate(panel->drm, &default_mode); > > + if (!mode) { > > + DRM_ERROR("Failed to add mode %ux%u@%u", > > + default_mode.hdisplay, default_mode.vdisplay, > > + default_mode.vrefresh); > > + return -ENOMEM; > Use DRM_DEV_ERROR() > You can find dev via: panel->base.drm-dev > > > + > > +static int jh057n_probe(struct mipi_dsi_device *dsi) > > +{ > > + struct device *dev = &dsi->dev; > > + struct jh057n *ctx; > > + int ret; > > + > > + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); > > + if (!ctx) > > + return -ENOMEM; > > + > > + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); > > + if (IS_ERR(ctx->reset_gpio)) { > > + DRM_DEV_ERROR(dev, "cannot get reset gpio"); > > + return PTR_ERR(ctx->reset_gpio); > > + } > > + > > + mipi_dsi_set_drvdata(dsi, ctx); > > + > > + ctx->dev = dev; > > + > > + dsi->lanes = 4; > > + dsi->format = MIPI_DSI_FMT_RGB888; > > + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | > > + MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE; > > + > > + ctx->backlight = devm_of_find_backlight(dev); > > + if (IS_ERR(ctx->backlight)) > > + return PTR_ERR(ctx->backlight); > > + > > + drm_panel_init(&ctx->panel); > > + ctx->panel.dev = dev; > > + ctx->panel.funcs = &jh057n_drm_funcs; > > + > > + drm_panel_add(&ctx->panel); > > + > > + ret = mipi_dsi_attach(dsi); > > + if (ret < 0) { > > + DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?"); > > + drm_panel_remove(&ctx->panel); > > + return ret; > > + } > > + > > + DRM_INFO(DRV_NAME "_panel %ux%u@%u %ubpp dsi %udl - ready", > > + default_mode.hdisplay, default_mode.vdisplay, > > + default_mode.vrefresh, > > + mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes); > > You already have dev, so use DRM_DEV_INFO() and drop DRV_NAME > > > + > > +static const struct of_device_id jh057n_of_match[] = { > > + { .compatible = "rocktech,jh057n00900" }, > > + { /* Sentinel */ } > Lower case 's' (sorry, likely my bad) > > > + .probe = jh057n_probe, > > + .remove = jh057n_remove, > > + .shutdown = jh057n_shutdown, > > + .driver = { > > + .name = DRV_NAME "_panel", > Drop "_panel" postfix. Other drivers do not use it. > > Sam > ^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2019-03-04 17:55 UTC | newest] Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2019-03-01 13:02 [PATCH v2 0/3] drm/panel: Support Rocktech jh057n00900 DSI panel Guido Günther 2019-03-01 13:02 ` Guido Günther 2019-03-01 13:02 ` [PATCH v2 1/3] dt-bindings: Add vendor prefix for ROCKTECH DISPLAYS LIMITED Guido Günther 2019-03-01 13:02 ` Guido Günther 2019-03-01 13:02 ` [PATCH v2 2/3] dt-bindings: Add Rocktech jh057n00900 panel bindings Guido Günther 2019-03-01 13:02 ` Guido Günther 2019-03-01 13:02 ` [PATCH v2 3/3] drm/panel: Add Rocktech jh057n00900 panel driver Guido Günther 2019-03-01 13:02 ` Guido Günther 2019-03-01 22:39 ` Sam Ravnborg 2019-03-04 17:54 ` Guido Günther
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