Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1383206 > unrolled thread

[PATCH v2 1/4] dt-bindings: Add jdi panel vendor

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  [PATCH v2 1/4] dt-bindings: Add jdi panel vendor Vinay Simha BN <simhavcs@gmail.com> - 2016-04-20 11:40 +0200
    [PATCH v2 4/4] drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel Vinay Simha BN <simhavcs@gmail.com> - 2016-04-20 11:40 +0200
    [PATCH v2 3/4] drm/dsi: Implement set tear scanline Vinay Simha BN <simhavcs@gmail.com> - 2016-04-20 11:40 +0200
      Re: [PATCH v2 3/4] drm/dsi: Implement set tear scanline kbuild test robot <lkp@intel.com> - 2016-04-20 12:00 +0200
        [PATCH v3] drm/dsi: Implement set tear scanline compile fix Vinay Simha BN <simhavcs@gmail.com> - 2016-04-20 12:30 +0200
    Re: [PATCH v2 1/4] dt-bindings: Add jdi panel vendor Rob Herring <robh@kernel.org> - 2016-04-21 17:40 +0200

#1383206 — [PATCH v2 1/4] dt-bindings: Add jdi panel vendor

Japan Display Inc.

Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
---
 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 0061d25..a9ae6c14 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -133,6 +133,7 @@ invensense	InvenSense Inc.
 isee	ISEE 2007 S.L.
 isil	Intersil
 issi	Integrated Silicon Solutions Inc.
+jdi	Japan Display Inc.
 jedec	JEDEC Solid State Technology Association
 karo	Ka-Ro electronics GmbH
 keymile	Keymile GmbH
-- 
2.1.2

[toc] | [next] | [standalone]

#1383211 — [PATCH v2 4/4] drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel

Add support for the JDI lt070me05000 WUXGA DSI panel used in
Nexus 7 2013 devices.

Programming sequence for the panel is was originally found in the
android-msm-flo-3.4-lollipop-release branch from:
    https://android.googlesource.com/kernel/msm.git

And video mode setting is from dsi-panel-jdi-dualmipi1-video.dtsi
file in:
    git://codeaurora.org/kernel/msm-3.10.git  LNX.LA.3.6_rb1.27

Other fixes folded in were provided
by Archit Taneja <archit.taneja@gmail.com>

Cc: Archit Taneja <archit.taneja@gmail.com>
Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
[sumit.semwal: Ported to the drm/panel framework]
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
[jstultz: Cherry-picked to mainline, folded down other fixes
 from Vinay and Archit]
Signed-off-by: John Stultz <john.stultz@linaro.org>
[vinay simha bn: removed interface setting cmd mode, video
mode panel setting selection]
Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
---
 drivers/gpu/drm/panel/Kconfig                  |  11 +
 drivers/gpu/drm/panel/Makefile                 |   1 +
 drivers/gpu/drm/panel/panel-jdi-lt070me05000.c | 506 +++++++++++++++++++++++++
 3 files changed, 518 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-jdi-lt070me05000.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 1500ab9..4a6fcc2 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -7,6 +7,17 @@ config DRM_PANEL
 menu "Display Panels"
 	depends on DRM && DRM_PANEL
 
+config DRM_PANEL_JDI_LT070ME05000
+	tristate "JDI LT070ME05000 WUXGA DSI 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 JDI WUXGA DSI video
+	  mode panel as found in Google Nexus 7 (2013) devices.
+	  The panel has a 1200(RGB)×1920 (WUXGA) resolution and uses
+	  24 bit RGB per pixel.
+
 config DRM_PANEL_SIMPLE
 	tristate "support for simple panels"
 	depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index f277eed..5d74ac2 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -1,3 +1,4 @@
+obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o
 obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
 obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
 obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
diff --git a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
new file mode 100644
index 0000000..aeeba99
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
@@ -0,0 +1,506 @@
+/*
+ * Copyright (C) 2016 InforceComputing
+ * Author: Vinay Simha BN <simhavcs@gmail.com>
+ *
+ * Copyright (C) 2016 Linaro Ltd
+ * Author: Sumit Semwal <sumit.semwal@linaro.org>
+ *
+ * From internet archives, the panel for Nexus 7 2nd Gen, 2013 model is a
+ * JDI model LT070ME05000, and its data sheet is at:
+ * http://panelone.net/en/7-0-inch/JDI_LT070ME05000_7.0_inch-datasheet
+ *
+ * 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/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>
+
+#define PANEL_DEV_REGULATOR_MAX   3
+
+const char *regs[] = {
+	"power",
+	"vddp",
+	"dcdc_en"
+};
+
+struct jdi_panel {
+	struct drm_panel base;
+	struct mipi_dsi_device *dsi;
+
+	struct regulator_bulk_data supplies[PANEL_DEV_REGULATOR_MAX];
+
+	struct gpio_desc *reset_gpio;
+	struct gpio_desc *enable_gpio;
+	struct gpio_desc *vcc_gpio;
+	struct gpio_desc *pwm_gpio;
+
+	/* TODO: Add backlight brightness support */
+	bool prepared;
+	bool enabled;
+
+	const struct drm_display_mode *mode;
+};
+
+static inline struct jdi_panel *to_jdi_panel(struct drm_panel *panel)
+{
+	return container_of(panel, struct jdi_panel, base);
+}
+
+static int jdi_panel_init(struct jdi_panel *jdi)
+{
+	struct mipi_dsi_device *dsi = jdi->dsi;
+	int ret;
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_soft_reset(dsi);
+	if (ret < 0)
+		return ret;
+
+	usleep_range(10000, 20000);
+
+	ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x70);
+	if (ret < 0)
+		return ret;
+
+	ret = mipi_dsi_dcs_set_column_address(dsi, 0x0000, 0x04AF);
+	if (ret < 0)
+		return ret;
+
+	ret = mipi_dsi_dcs_set_page_address(dsi, 0x0000, 0x077F);
+	if (ret < 0)
+		return ret;
+
+	ret = mipi_dsi_dcs_set_tear_on(dsi,
+				       MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	if (ret < 0)
+		return ret;
+	usleep_range(5000, 10000);
+
+	ret = mipi_dsi_set_tear_scanline(dsi, 0x03, 0x00);
+	if (ret < 0)
+		return ret;
+
+	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
+				 (u8[]){ 0xFF }, 1);
+	if (ret < 0)
+		return ret;
+
+	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
+				 (u8[]){ 0x24 }, 1);
+	if (ret < 0)
+		return ret;
+
+	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_POWER_SAVE,
+				 (u8[]){ 0x00 }, 1);
+	if (ret < 0)
+		return ret;
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0)
+		return ret;
+	mdelay(120);
+
+	ret = mipi_dsi_generic_write(dsi, (u8[]){0xB0, 0x00}, 2);
+	if (ret < 0)
+		return ret;
+	mdelay(10);
+
+	ret = mipi_dsi_generic_write(dsi, (u8[])
+				     {0xB3, 0x26, 0x08, 0x00, 0x20, 0x00}, 6);
+	if (ret < 0)
+		return ret;
+	mdelay(20);
+
+	ret = mipi_dsi_generic_write(dsi, (u8[]){0xB0, 0x03}, 2);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int jdi_panel_on(struct jdi_panel *jdi)
+{
+	struct mipi_dsi_device *dsi = jdi->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 jdi_panel_off(struct jdi_panel *jdi)
+{
+	struct mipi_dsi_device *dsi = jdi->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;
+
+	ret = mipi_dsi_dcs_set_tear_off(dsi);
+	if (ret < 0)
+		return ret;
+
+	msleep(100);
+
+	return 0;
+}
+
+static int jdi_panel_disable(struct drm_panel *panel)
+{
+	struct jdi_panel *jdi = to_jdi_panel(panel);
+
+	if (!jdi->enabled)
+		return 0;
+
+	DRM_DEBUG("disable\n");
+
+	/* TODO to add the backlight brightness control */
+
+	jdi->enabled = false;
+
+	return 0;
+}
+
+static int jdi_panel_unprepare(struct drm_panel *panel)
+{
+	struct jdi_panel *jdi = to_jdi_panel(panel);
+	struct regulator_bulk_data *s = jdi->supplies;
+	int num = PANEL_DEV_REGULATOR_MAX;
+	struct device *dev = &jdi->dsi->dev;
+	int ret;
+
+	if (!jdi->prepared)
+		return 0;
+
+	DRM_DEBUG("unprepare\n");
+
+	ret = jdi_panel_off(jdi);
+	if (ret) {
+		dev_err(panel->dev, "failed to set panel off: %d\n", ret);
+		return ret;
+	}
+
+	ret = regulator_bulk_disable(num, s);
+	if (ret < 0) {
+		dev_err(dev, "regulator disable failed, %d\n", ret);
+		return ret;
+	}
+
+	if (jdi->vcc_gpio)
+		gpiod_set_value(jdi->vcc_gpio, 0);
+
+	if (jdi->reset_gpio)
+		gpiod_set_value(jdi->reset_gpio, 0);
+
+	if (jdi->enable_gpio)
+		gpiod_set_value(jdi->enable_gpio, 0);
+
+	jdi->prepared = false;
+
+	return 0;
+}
+
+static int jdi_panel_prepare(struct drm_panel *panel)
+{
+	struct jdi_panel *jdi = to_jdi_panel(panel);
+	struct regulator_bulk_data *s = jdi->supplies;
+	int num = PANEL_DEV_REGULATOR_MAX;
+	struct device *dev = &jdi->dsi->dev;
+	int ret;
+
+	if (jdi->prepared)
+		return 0;
+
+	DRM_DEBUG("prepare\n");
+
+	ret = regulator_bulk_enable(num, s);
+	if (ret < 0) {
+		dev_err(dev, "regulator enable failed, %d\n", ret);
+		return ret;
+	}
+
+	msleep(20);
+
+	if (jdi->vcc_gpio) {
+		gpiod_set_value(jdi->vcc_gpio, 1);
+		usleep_range(10, 20);
+	}
+
+	if (jdi->reset_gpio) {
+		gpiod_set_value(jdi->reset_gpio, 1);
+		usleep_range(10, 20);
+	}
+
+	if (jdi->pwm_gpio) {
+		gpiod_set_value(jdi->pwm_gpio, 1);
+		usleep_range(10, 20);
+	}
+
+	if (jdi->enable_gpio) {
+		gpiod_set_value(jdi->enable_gpio, 1);
+		usleep_range(10, 20);
+	}
+
+	ret = jdi_panel_init(jdi);
+	if (ret) {
+		dev_err(panel->dev, "failed to init panel: %d\n", ret);
+		goto poweroff;
+	}
+
+	ret = jdi_panel_on(jdi);
+	if (ret) {
+		dev_err(panel->dev, "failed to set panel on: %d\n", ret);
+		goto poweroff;
+	}
+
+	jdi->prepared = true;
+
+	return 0;
+
+poweroff:
+	if (jdi->reset_gpio)
+		gpiod_set_value(jdi->reset_gpio, 0);
+	if (jdi->enable_gpio)
+		gpiod_set_value(jdi->enable_gpio, 0);
+	if (jdi->vcc_gpio)
+		gpiod_set_value(jdi->vcc_gpio, 0);
+
+	return ret;
+}
+
+static int jdi_panel_enable(struct drm_panel *panel)
+{
+	struct jdi_panel *jdi = to_jdi_panel(panel);
+
+	if (jdi->enabled)
+		return 0;
+
+	DRM_DEBUG("enable\n");
+
+	/* TODO to add the backlight brightness control */
+	jdi->enabled = true;
+
+	return 0;
+}
+
+static const struct drm_display_mode default_mode = {
+		.clock = 155493,
+		.hdisplay = 1200,
+		.hsync_start = 1200 + 48,
+		.hsync_end = 1200 + 48 + 32,
+		.htotal = 1200 + 48 + 32 + 60,
+		.vdisplay = 1920,
+		.vsync_start = 1920 + 3,
+		.vsync_end = 1920 + 3 + 5,
+		.vtotal = 1920 + 3 + 5 + 6,
+		.vrefresh = 60,
+		.flags = 0,
+};
+
+static int jdi_panel_get_modes(struct drm_panel *panel)
+{
+	struct drm_display_mode *mode;
+	struct jdi_panel *jdi = to_jdi_panel(panel);
+	struct device *dev = &jdi->dsi->dev;
+
+	mode = drm_mode_duplicate(panel->drm, &default_mode);
+	if (!mode) {
+		dev_err(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);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs jdi_panel_funcs = {
+	.disable = jdi_panel_disable,
+	.unprepare = jdi_panel_unprepare,
+	.prepare = jdi_panel_prepare,
+	.enable = jdi_panel_enable,
+	.get_modes = jdi_panel_get_modes,
+};
+
+static const struct of_device_id jdi_of_match[] = {
+	{ .compatible = "jdi,lt070me05000", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, jdi_of_match);
+
+static int jdi_panel_add(struct jdi_panel *jdi)
+{
+	struct device *dev = &jdi->dsi->dev;
+	struct regulator_bulk_data *s = jdi->supplies;
+	int num = PANEL_DEV_REGULATOR_MAX;
+	int i, ret;
+
+	jdi->mode = &default_mode;
+
+	for (i = 0; i < num; i++)
+		s[i].supply = regs[i];
+
+	ret = devm_regulator_bulk_get(dev, num, s);
+	if (ret < 0) {
+		dev_err(dev, "%s: failed to init regulator, ret=%d\n",
+			__func__, ret);
+		return ret;
+	}
+
+	jdi->vcc_gpio = devm_gpiod_get(dev, "vcc", GPIOD_OUT_LOW);
+	if (IS_ERR(jdi->vcc_gpio)) {
+		dev_err(dev, "cannot get vcc-gpio %ld\n",
+			PTR_ERR(jdi->vcc_gpio));
+		jdi->vcc_gpio = NULL;
+	} else {
+		gpiod_direction_output(jdi->vcc_gpio, 0);
+	}
+
+	jdi->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(jdi->reset_gpio)) {
+		dev_err(dev, "cannot get reset-gpios %ld\n",
+			PTR_ERR(jdi->reset_gpio));
+		jdi->reset_gpio = NULL;
+	} else {
+		gpiod_direction_output(jdi->reset_gpio, 0);
+	}
+
+	jdi->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(jdi->enable_gpio)) {
+		dev_err(dev, "cannot get enable-gpio %ld\n",
+			PTR_ERR(jdi->enable_gpio));
+		jdi->enable_gpio = NULL;
+	} else {
+		gpiod_direction_output(jdi->enable_gpio, 0);
+	}
+
+	jdi->pwm_gpio = devm_gpiod_get(dev, "pwm", GPIOD_OUT_LOW);
+	if (IS_ERR(jdi->pwm_gpio)) {
+		dev_err(dev, "cannot get pwm-gpio %ld\n",
+			PTR_ERR(jdi->pwm_gpio));
+		jdi->pwm_gpio = NULL;
+	} else {
+		gpiod_direction_output(jdi->pwm_gpio, 0);
+	}
+
+	drm_panel_init(&jdi->base);
+	jdi->base.funcs = &jdi_panel_funcs;
+	jdi->base.dev = &jdi->dsi->dev;
+
+	ret = drm_panel_add(&jdi->base);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static void jdi_panel_del(struct jdi_panel *jdi)
+{
+	if (jdi->base.dev)
+		drm_panel_remove(&jdi->base);
+}
+
+static int jdi_panel_probe(struct mipi_dsi_device *dsi)
+{
+	struct jdi_panel *jdi;
+	int ret;
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags =  MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO |
+			MIPI_DSI_MODE_VIDEO_HFP | MIPI_DSI_MODE_VIDEO_HBP |
+			MIPI_DSI_MODE_VIDEO_HSA |
+			MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+	jdi = devm_kzalloc(&dsi->dev, sizeof(*jdi), GFP_KERNEL);
+	if (!jdi)
+		return -ENOMEM;
+
+	mipi_dsi_set_drvdata(dsi, jdi);
+
+	jdi->dsi = dsi;
+
+	ret = jdi_panel_add(jdi);
+	if (ret < 0)
+		return ret;
+
+	return mipi_dsi_attach(dsi);
+}
+
+static int jdi_panel_remove(struct mipi_dsi_device *dsi)
+{
+	struct jdi_panel *jdi = mipi_dsi_get_drvdata(dsi);
+	int ret;
+
+	ret = jdi_panel_disable(&jdi->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(&jdi->base);
+	jdi_panel_del(jdi);
+
+	return 0;
+}
+
+static void jdi_panel_shutdown(struct mipi_dsi_device *dsi)
+{
+	struct jdi_panel *jdi = mipi_dsi_get_drvdata(dsi);
+
+	jdi_panel_disable(&jdi->base);
+}
+
+static struct mipi_dsi_driver jdi_panel_driver = {
+	.driver = {
+		.name = "panel-jdi-lt070me05000",
+		.of_match_table = jdi_of_match,
+	},
+	.probe = jdi_panel_probe,
+	.remove = jdi_panel_remove,
+	.shutdown = jdi_panel_shutdown,
+};
+module_mipi_dsi_driver(jdi_panel_driver);
+
+MODULE_AUTHOR("Sumit Semwal <sumit.semwal@linaro.org>");
+MODULE_AUTHOR("Vinay Simha BN <simhavcs@gmail.com>");
+MODULE_DESCRIPTION("JDI WUXGA LT070ME05000 DSI video mode panel driver");
+MODULE_LICENSE("GPL v2");
-- 
2.1.2

[toc] | [prev] | [next] | [standalone]

#1383215 — [PATCH v2 3/4] drm/dsi: Implement set tear scanline

Provide a small convenience wrapper that transmits
a set_tear_scanline command.

Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
---
 drivers/gpu/drm/drm_mipi_dsi.c | 22 ++++++++++++++++++++++
 include/drm/drm_mipi_dsi.h     |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index f5d8083..26aba75 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -983,6 +983,28 @@ int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi,
 EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_on);
 
 /**
+ * mipi_dsi_set_tear_scanline() - turn on the display module's Tearing Effect
+ *    output signal on the TE signal line when display module reaches line N
+ *    defined by STS[n:0].
+ * @dsi: DSI peripheral device
+ * @param1: STS[10:8]
+ * @param2: STS[7:0]
+ * Return: 0 on success or a negative error code on failure
+ */
+int mipi_dsi_set_tear_scanline(struct mipi_dsi_device *dsi,
+                             u8 param1, u8 param2)
+{
+        u8 payload[3] = { MIPI_DCS_SET_TEAR_SCANLINE, param1 , param2};
+        ssize_t err;
+
+        err = mipi_dsi_generic_write(dsi, &payload, sizeof(payload));
+        if (err < 0)
+                return err;
+
+        return 0;
+}
+EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_scanline);
+/**
  * mipi_dsi_dcs_set_pixel_format() - sets the pixel format for the RGB image
  *    data used by the interface
  * @dsi: DSI peripheral device
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index 7a9840f..37bd75d 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -263,6 +263,8 @@ int mipi_dsi_dcs_set_column_address(struct mipi_dsi_device *dsi, u16 start,
 				    u16 end);
 int mipi_dsi_dcs_set_page_address(struct mipi_dsi_device *dsi, u16 start,
 				  u16 end);
+int mipi_dsi_set_tear_scanline(struct mipi_dsi_device *dsi, u8 param1,
+				   u8 param2);
 int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi);
 int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi,
 			     enum mipi_dsi_dcs_tear_mode mode);
-- 
2.1.2

[toc] | [prev] | [next] | [standalone]

#1383230 — Re: [PATCH v2 3/4] drm/dsi: Implement set tear scanline

[Multipart message — attachments visible in raw view] — view raw

Hi,

[auto build test ERROR on tegra-drm/drm/tegra/for-next]
[also build test ERROR on v4.6-rc4 next-20160420]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Vinay-Simha-BN/dt-bindings-Add-jdi-panel-vendor/20160420-173456
base:   git://anongit.freedesktop.org/tegra/linux.git drm/tegra/for-next
config: x86_64-randconfig-x012-201616 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/linkage.h:6:0,
                    from include/linux/kernel.h:6,
                    from include/linux/list.h:8,
                    from include/linux/kobject.h:20,
                    from include/linux/device.h:17,
                    from include/drm/drm_mipi_dsi.h:15,
                    from drivers/gpu/drm/drm_mipi_dsi.c:28:
>> drivers/gpu/drm/drm_mipi_dsi.c:1006:15: error: 'mipi_dsi_dcs_set_tear_scanline' undeclared here (not in a function)
    EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_scanline);
                  ^
   include/linux/export.h:57:16: note: in definition of macro '__EXPORT_SYMBOL'
     extern typeof(sym) sym;     \
                   ^
>> drivers/gpu/drm/drm_mipi_dsi.c:1006:1: note: in expansion of macro 'EXPORT_SYMBOL'
    EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_scanline);
    ^

vim +/mipi_dsi_dcs_set_tear_scanline +1006 drivers/gpu/drm/drm_mipi_dsi.c

  1000	        err = mipi_dsi_generic_write(dsi, &payload, sizeof(payload));
  1001	        if (err < 0)
  1002	                return err;
  1003	
  1004	        return 0;
  1005	}
> 1006	EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_scanline);
  1007	/**
  1008	 * mipi_dsi_dcs_set_pixel_format() - sets the pixel format for the RGB image
  1009	 *    data used by the interface

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[toc] | [prev] | [next] | [standalone]

#1383244 — [PATCH v3] drm/dsi: Implement set tear scanline compile fix

Provide a small convenience wrapper that transmits
a set_tear_scanline command.
compilation fix

Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
---
 drivers/gpu/drm/drm_mipi_dsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 26aba75..bba6db2 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -1003,7 +1003,7 @@ int mipi_dsi_set_tear_scanline(struct mipi_dsi_device *dsi,
 
         return 0;
 }
-EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_scanline);
+EXPORT_SYMBOL(mipi_dsi_set_tear_scanline);
 /**
  * mipi_dsi_dcs_set_pixel_format() - sets the pixel format for the RGB image
  *    data used by the interface
-- 
2.1.2

[toc] | [prev] | [next] | [standalone]

#1384367

On Wed, Apr 20, 2016 at 03:02:30PM +0530, Vinay Simha BN wrote:
> Japan Display Inc.
> 
> Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
> ---
>  Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Rob Herring <robh@kernel.org>

[toc] | [prev] | [standalone]

Back to top | Article view | linux.kernel

csiph-web