* [PATCH 1/4] dt-bindings: Add Japan Display Inc vendor id
@ 2016-07-13 16:44 Vinay Simha BN
2016-07-13 16:44 ` [PATCH v2 2/4] dt-bindings: Add jdi lt070me05000 panel bindings Vinay Simha BN
` (2 more replies)
0 siblings, 3 replies; 7+ messages in thread
From: Vinay Simha BN @ 2016-07-13 16:44 UTC (permalink / raw)
Cc: Vinay Simha BN, Archit Taneja, John Stultz, Thierry Reding,
Sumit Semwal, Rob Herring, Mark Rutland, Thierry Reding,
Jonathan Cameron, Shawn Guo, Jarkko Sakkinen,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
open list
Add vendor id for Japan Display Inc.
Cc: Archit Taneja <archit.taneja@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
Acked-by: Rob Herring <robh@kernel.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 ecc8cf4..1b134f3 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -138,6 +138,7 @@ 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
--
1.9.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v2 2/4] dt-bindings: Add jdi lt070me05000 panel bindings
2016-07-13 16:44 [PATCH 1/4] dt-bindings: Add Japan Display Inc vendor id Vinay Simha BN
@ 2016-07-13 16:44 ` Vinay Simha BN
2016-07-13 16:44 ` [PATCH v2 3/4] drm/dsi: Implement dcs set/get display brightness Vinay Simha BN
2016-07-13 16:44 ` [PATCH v8 4/4] drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel Vinay Simha BN
2 siblings, 0 replies; 7+ messages in thread
From: Vinay Simha BN @ 2016-07-13 16:44 UTC (permalink / raw)
Cc: Vinay Simha BN, Archit Taneja, John Stultz, Thierry Reding,
Sumit Semwal, David Airlie, Rob Herring, Mark Rutland,
open list:DRM PANEL DRIVERS,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
open list
Add documentation for lt070me05000 panel
Cc: Archit Taneja <archit.taneja@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
---
v2:
* incorporated rob herring and thierry reviews
gpio to gpios, gpio to regulator using fixed regulators
and pwm backlight is removed, since it is controlled by
dcs commands
---
.../bindings/display/panel/jdi,lt070me05000.txt | 57 ++++++++++++++++++++++
1 file changed, 57 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/panel/jdi,lt070me05000.txt
diff --git a/Documentation/devicetree/bindings/display/panel/jdi,lt070me05000.txt b/Documentation/devicetree/bindings/display/panel/jdi,lt070me05000.txt
new file mode 100644
index 0000000..613b76f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/jdi,lt070me05000.txt
@@ -0,0 +1,57 @@
+JDI model LT070ME05000 1200x1920 7" DSI Panel
+
+Required properties:
+- compatible: should be "jdi,lt070me05000"
+- vddp-supply: phandle of the regulator that provides the supply voltage
+ Power IC supply (3-5V)
+- dcdc_en-supply: phandle of the regulator that provides the supply voltage
+ Power IC supply enable, High active
+- vcc-supply: phandle of the regulator that provides the supply voltage
+ IOVCC , power supply for LCM (1.8V)
+- reset-gpios: phandle of gpio for reset line
+ This should be 8mA, gpio can be configured using mux, pinctrl, pinctrl-names
+ XRES, Reset, Low active
+- enable-gpios: phandle of gpio for enable line
+ LED_EN, LED backlight enable, High active
+
+Example:
+
+ vcc_1p8v: regulator-fixed@2 {
+ compatible = "regulator-fixed";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-name = "vcc_1p8v";
+ regulator-type = "voltage";
+ startup-delay-us = <0>;
+ gpio = <&pm8921_gpio 23 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ regulator-boot-on;
+ };
+
+ tlmm_pinmux: pinctrl@800000 {
+
+ dsi_panel_pinctrl: dsi-panel-pinctrl {
+ mux {
+ pins = "gpio54";
+ function = "gpio";
+ bias-pull-up;
+ drive-strength = <8>;
+ };
+ };
+ };
+
+ dsi0: qcom,mdss_dsi@4700000 {
+ panel@0 {
+ compatible = "jdi,lt070me05000";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&dsi_panel_pinctrl>;
+
+ vddp-supply = <&pm8921_l17>;
+ dcdc_en-supply = <&pm8921_lvs7>;
+ vcc-supply = <&vcc_1p8v>;
+
+ reset-gpios = <&tlmm_pinmux 54 0>;
+ enable-gpios = <&pm8921_gpio 36 GPIO_ACTIVE_HIGH>;
+ };
+ };
--
1.9.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v2 3/4] drm/dsi: Implement dcs set/get display brightness
2016-07-13 16:44 [PATCH 1/4] dt-bindings: Add Japan Display Inc vendor id Vinay Simha BN
2016-07-13 16:44 ` [PATCH v2 2/4] dt-bindings: Add jdi lt070me05000 panel bindings Vinay Simha BN
@ 2016-07-13 16:44 ` Vinay Simha BN
2016-07-14 21:20 ` Emil Velikov
2016-07-13 16:44 ` [PATCH v8 4/4] drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel Vinay Simha BN
2 siblings, 1 reply; 7+ messages in thread
From: Vinay Simha BN @ 2016-07-13 16:44 UTC (permalink / raw)
Cc: Vinay Simha BN, John Stultz, Sumit Semwal, Archit Taneja,
Rob Clark, Jani Nikula, Thierry Reding, David Airlie,
open list:DRM DRIVERS, open list
Provide a small convenience wrapper that set/get the
display brightness value
Cc: John Stultz <john.stultz@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Archit Taneja <archit.taneja@gmail.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
---
v1:
*tested in nexus7 2nd gen.
v2:
* implemented jani review comments
-functions name mapped accordingly
-bl value increased from 0xff to 0xffff
-backlight interface will be handled in panel driver,
so it is moved from the mipi_dsi helper function
---
drivers/gpu/drm/drm_mipi_dsi.c | 49 ++++++++++++++++++++++++++++++++++++++++++
include/drm/drm_mipi_dsi.h | 4 ++++
2 files changed, 53 insertions(+)
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index af0d471..7c22f64 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -1041,6 +1041,55 @@ int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format)
}
EXPORT_SYMBOL(mipi_dsi_dcs_set_pixel_format);
+/**
+ * mipi_dsi_dcs_get_display_brightness() - gets the current brightness value
+ * of the display
+ * @dsi: DSI peripheral device
+ * @brightness: brightness value
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int mipi_dsi_dcs_get_display_brightness(struct mipi_dsi_device *dsi,
+ u16 *brightness)
+{
+ ssize_t err;
+
+ err = mipi_dsi_dcs_read(dsi, MIPI_DCS_GET_DISPLAY_BRIGHTNESS,
+ brightness, sizeof(*brightness));
+ if (err < 0) {
+ if (err == 0)
+ err = -ENODATA;
+
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(mipi_dsi_dcs_get_display_brightness);
+
+/**
+ * mipi_dsi_dcs_set_display_brightness() - sets the brightness value of
+ * the display
+ * @dsi: DSI peripheral device
+ * @brightness: brightness value
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int mipi_dsi_dcs_set_display_brightness(struct mipi_dsi_device *dsi,
+ u16 brightness)
+{
+ ssize_t err;
+ u8 bl_value[2] = { brightness & 0xff, brightness >> 8 };
+
+ err = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
+ bl_value, sizeof(bl_value));
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL(mipi_dsi_dcs_set_display_brightness);
+
static int mipi_dsi_drv_probe(struct device *dev)
{
struct mipi_dsi_driver *drv = to_mipi_dsi_driver(dev->driver);
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index 47ac925..404c373 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -270,6 +270,10 @@ 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);
int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format);
+int mipi_dsi_dcs_get_display_brightness(struct mipi_dsi_device *dsi,
+ u16 *brightness);
+int mipi_dsi_dcs_set_display_brightness(struct mipi_dsi_device *dsi,
+ u16 brightness);
/**
* struct mipi_dsi_driver - DSI driver
--
1.9.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v8 4/4] drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel
2016-07-13 16:44 [PATCH 1/4] dt-bindings: Add Japan Display Inc vendor id Vinay Simha BN
2016-07-13 16:44 ` [PATCH v2 2/4] dt-bindings: Add jdi lt070me05000 panel bindings Vinay Simha BN
2016-07-13 16:44 ` [PATCH v2 3/4] drm/dsi: Implement dcs set/get display brightness Vinay Simha BN
@ 2016-07-13 16:44 ` Vinay Simha BN
2016-07-13 18:58 ` John Stultz
2 siblings, 1 reply; 7+ messages in thread
From: Vinay Simha BN @ 2016-07-13 16:44 UTC (permalink / raw)
Cc: Vinay Simha BN, Archit Taneja, Rob Clark, Sumit Semwal,
John Stultz, Emil Velikov, Thierry Reding, David Airlie,
open list, open list:DRM PANEL DRIVERS
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
Cc: Archit Taneja <archit.taneja@gmail.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
---
v1:
* sumit ported to drm/panel framework, john cherry-picked to mainline,
folded down other fixes from Vinay and Archit, vinay removed interface
setting cmd mode, video mode panel selected
v2:
* incorporated code reviews from theiry, archit
code style, alphabetical soring in Makefile, Kconfig, regulator_bulk,
arrays of u8, generic helper function, documentation bindings,
v3:
* dcs backlight support added
* tested this panel driver in nexus7 2013 device
v4:
* backlight interface added in the panel driver
* incorporated width_mm and height_mm suggested by rob herring
v5:
* theirry review comments incorporated
panel model naming consistent, alphabetical soring in Kconfig
Makefile, MAX_BRIGHTNESS dropped, regulator_names, parameterize
panel width and height, descprition for control display, cabc
and interface setting, temporary variable removed, consistent
error reporting and commit message
* removed tear on/off, scanline, since these are required only
for command mode panels
v6:
* emil review comments incorporated
PANEL_NUM_REGULATORS dropped, return ret added at necessary
places, if checks dropped for backlight and gpios
v7:
* emil review comments incorporated
added ARRAY_SIZE in struct, regulator_bulk_disable in poweroff,
gpios checks dropped.
some returns cannot be dropped, since drm panel framework return
type required.
v8:
* emil review commnets incorporated for jdi_panel_unprepare,
dropped the returns (ref: panel-sharp-lq101r1sx01.c) and
for jdi_panel_prepare(panel_on) it does not return prematurely
and goes to poweroff if not success
* few dev_err's for panel_init
---
drivers/gpu/drm/panel/Kconfig | 11 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-jdi-lt070me05000.c | 518 +++++++++++++++++++++++++
3 files changed, 530 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..62aba97 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -18,6 +18,17 @@ config DRM_PANEL_SIMPLE
that it can be automatically turned off when the panel goes into a
low power state.
+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 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 per pixel.
+
config DRM_PANEL_SAMSUNG_LD9040
tristate "Samsung LD9040 RGB/SPI panel"
depends on OF && SPI
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index f277eed..a5c7ec0 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -1,4 +1,5 @@
obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
+obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o
obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.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..d54c472
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
@@ -0,0 +1,518 @@
+/*
+ * 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/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>
+
+static const char * const regulator_names[] = {
+ "vddp",
+ "dcdc_en",
+ "vcc"
+};
+
+struct jdi_panel {
+ struct drm_panel base;
+ struct mipi_dsi_device *dsi;
+
+ struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)];
+
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *enable_gpio;
+ struct backlight_device *backlight;
+
+ 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;
+ struct device *dev = &jdi->dsi->dev;
+ 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, MIPI_DCS_PIXEL_FMT_24BIT << 4);
+ if (ret < 0) {
+ dev_err(dev, "failed to set pixel format: %d\n", ret);
+ return ret;
+ }
+
+ ret = mipi_dsi_dcs_set_column_address(dsi, 0, jdi->mode->hdisplay - 1);
+ if (ret < 0) {
+ dev_err(dev, "failed to set column address: %d\n", ret);
+ return ret;
+ }
+
+ ret = mipi_dsi_dcs_set_page_address(dsi, 0, jdi->mode->vdisplay - 1);
+ if (ret < 0) {
+ dev_err(dev, "failed to set page address: %d\n", ret);
+ return ret;
+ }
+
+ /*
+ * BIT(5) BCTRL = 1 Backlight Control Block On, Brightness registers
+ * are active
+ * BIT(3) BL = 1 Backlight Control On
+ * BIT(2) DD = 0 Display Dimming is Off
+ */
+ ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
+ (u8[]){ 0x24 }, 1);
+ if (ret < 0) {
+ dev_err(dev, "failed to write control display: %d\n", ret);
+ return ret;
+ }
+
+ /* CABC off */
+ ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_POWER_SAVE,
+ (u8[]){ 0x00 }, 1);
+ if (ret < 0) {
+ dev_err(dev, "failed to set cabc off: %d\n", ret);
+ return ret;
+ }
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "failed to set exit sleep mode: %d\n", ret);
+ return ret;
+ }
+
+ msleep(120);
+
+ ret = mipi_dsi_generic_write(dsi, (u8[]){0xB0, 0x00}, 2);
+ if (ret < 0) {
+ dev_err(dev, "failed to set mcap: %d\n", ret);
+ return ret;
+ }
+
+ mdelay(10);
+
+ /* Interface setting, video mode */
+ ret = mipi_dsi_generic_write(dsi, (u8[])
+ {0xB3, 0x26, 0x08, 0x00, 0x20, 0x00}, 6);
+ if (ret < 0) {
+ dev_err(dev, "failed to set display interface setting: %d\n"
+ , ret);
+ return ret;
+ }
+
+ mdelay(20);
+
+ ret = mipi_dsi_generic_write(dsi, (u8[]){0xB0, 0x03}, 2);
+ if (ret < 0) {
+ dev_err(dev, "failed to set default values for mcap: %d\n"
+ , ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int jdi_panel_on(struct jdi_panel *jdi)
+{
+ struct mipi_dsi_device *dsi = jdi->dsi;
+ struct device *dev = &jdi->dsi->dev;
+ int ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0)
+ dev_err(dev, "failed to set display on: %d\n", ret);
+
+ return ret;
+}
+
+static void jdi_panel_off(struct jdi_panel *jdi)
+{
+ struct mipi_dsi_device *dsi = jdi->dsi;
+ struct device *dev = &jdi->dsi->dev;
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0)
+ dev_err(dev, "failed to set display off: %d\n", ret);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0)
+ dev_err(dev, "failed to enter sleep mode: %d\n", ret);
+
+ msleep(100);
+}
+
+static int jdi_panel_disable(struct drm_panel *panel)
+{
+ struct jdi_panel *jdi = to_jdi_panel(panel);
+
+ if (!jdi->enabled)
+ return 0;
+
+ jdi->backlight->props.power = FB_BLANK_POWERDOWN;
+ backlight_update_status(jdi->backlight);
+
+ jdi->enabled = false;
+
+ return 0;
+}
+
+static int jdi_panel_unprepare(struct drm_panel *panel)
+{
+ struct jdi_panel *jdi = to_jdi_panel(panel);
+ struct device *dev = &jdi->dsi->dev;
+ int ret;
+
+ if (!jdi->prepared)
+ return 0;
+
+ jdi_panel_off(jdi);
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(jdi->supplies), jdi->supplies);
+ if (ret < 0)
+ dev_err(dev, "regulator disable failed, %d\n", ret);
+
+ gpiod_set_value(jdi->enable_gpio, 0);
+
+ gpiod_set_value(jdi->reset_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 device *dev = &jdi->dsi->dev;
+ int ret;
+
+ if (jdi->prepared)
+ return 0;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(jdi->supplies), jdi->supplies);
+ if (ret < 0) {
+ dev_err(dev, "regulator enable failed, %d\n", ret);
+ return ret;
+ }
+
+ msleep(20);
+
+ gpiod_set_value(jdi->reset_gpio, 1);
+ usleep_range(10, 20);
+
+ gpiod_set_value(jdi->enable_gpio, 1);
+ usleep_range(10, 20);
+
+ ret = jdi_panel_init(jdi);
+ if (ret < 0) {
+ dev_err(dev, "failed to init panel: %d\n", ret);
+ goto poweroff;
+ }
+
+ ret = jdi_panel_on(jdi);
+ if (ret < 0) {
+ dev_err(dev, "failed to set panel on: %d\n", ret);
+ goto poweroff;
+ }
+
+ jdi->prepared = true;
+
+ return 0;
+
+poweroff:
+ ret = regulator_bulk_disable(ARRAY_SIZE(jdi->supplies), jdi->supplies);
+ if (ret < 0)
+ dev_err(dev, "regulator disable failed, %d\n", ret);
+
+ gpiod_set_value(jdi->enable_gpio, 0);
+
+ gpiod_set_value(jdi->reset_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;
+
+ jdi->backlight->props.power = FB_BLANK_UNBLANK;
+ backlight_update_status(jdi->backlight);
+
+ 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);
+
+ panel->connector->display_info.width_mm = 95;
+ panel->connector->display_info.height_mm = 151;
+
+ return 1;
+}
+
+static int dsi_dcs_bl_get_brightness(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ int ret;
+ u16 brightness = bl->props.brightness;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
+ if (ret < 0)
+ return ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ return brightness & 0xff;
+}
+
+static int dsi_dcs_bl_update_status(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_display_brightness(dsi, bl->props.brightness);
+ if (ret < 0)
+ return ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ return 0;
+}
+
+static const struct backlight_ops dsi_bl_ops = {
+ .update_status = dsi_dcs_bl_update_status,
+ .get_brightness = dsi_dcs_bl_get_brightness,
+};
+
+struct backlight_device *
+drm_panel_create_dsi_backlight(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct backlight_properties props;
+
+ memset(&props, 0, sizeof(props));
+ props.type = BACKLIGHT_RAW;
+ props.brightness = 255;
+ props.max_brightness = 255;
+
+ return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+ &dsi_bl_ops, &props);
+}
+
+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;
+ int ret;
+ unsigned int i;
+
+ jdi->mode = &default_mode;
+
+ for (i = 0; i < ARRAY_SIZE(jdi->supplies); i++)
+ jdi->supplies[i].supply = regulator_names[i];
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(jdi->supplies),
+ jdi->supplies);
+ if (ret < 0) {
+ dev_err(dev, "failed to init regulator, ret=%d\n", ret);
+ return ret;
+ }
+
+ jdi->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(jdi->reset_gpio)) {
+ ret = PTR_ERR(jdi->reset_gpio);
+ dev_err(dev, "cannot get reset-gpios %d\n", ret);
+ return ret;
+ }
+
+ jdi->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
+ if (IS_ERR(jdi->enable_gpio)) {
+ ret = PTR_ERR(jdi->enable_gpio);
+ dev_err(dev, "cannot get enable-gpio %d\n", ret);
+ return ret;
+ }
+
+ jdi->backlight = drm_panel_create_dsi_backlight(jdi->dsi);
+ if (IS_ERR(jdi->backlight)) {
+ ret = PTR_ERR(jdi->backlight);
+ dev_err(dev, "failed to register backlight %d\n", ret);
+ return ret;
+ }
+
+ drm_panel_init(&jdi->base);
+ jdi->base.funcs = &jdi_panel_funcs;
+ jdi->base.dev = &jdi->dsi->dev;
+
+ ret = drm_panel_add(&jdi->base);
+
+ return ret;
+}
+
+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_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 LT070ME05000 WUXGA");
+MODULE_LICENSE("GPL v2");
--
1.9.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH v8 4/4] drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel
2016-07-13 16:44 ` [PATCH v8 4/4] drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel Vinay Simha BN
@ 2016-07-13 18:58 ` John Stultz
2016-07-14 21:18 ` Emil Velikov
0 siblings, 1 reply; 7+ messages in thread
From: John Stultz @ 2016-07-13 18:58 UTC (permalink / raw)
To: Vinay Simha BN
Cc: Archit Taneja, Rob Clark, Sumit Semwal, Emil Velikov,
Thierry Reding, David Airlie, open list,
open list:DRM PANEL DRIVERS
On Wed, Jul 13, 2016 at 9:44 AM, Vinay Simha BN <simhavcs@gmail.com> wrote:
> 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
>
> Cc: Archit Taneja <archit.taneja@gmail.com>
> Cc: Rob Clark <robdclark@gmail.com>
> Cc: Sumit Semwal <sumit.semwal@linaro.org>
> Cc: John Stultz <john.stultz@linaro.org>
> Cc: Emil Velikov <emil.l.velikov@gmail.com>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Cc: David Airlie <airlied@linux.ie>
> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
> Signed-off-by: John Stultz <john.stultz@linaro.org>
> Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
Just fyi, I've re-integrated this patch set into my flo-WIP branch and
its working well.
I dunno if its of any use, but:
Tested-by: John Stultz <john.stultz@linaro.org>
thanks
-john
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v8 4/4] drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel
2016-07-13 18:58 ` John Stultz
@ 2016-07-14 21:18 ` Emil Velikov
0 siblings, 0 replies; 7+ messages in thread
From: Emil Velikov @ 2016-07-14 21:18 UTC (permalink / raw)
To: John Stultz
Cc: Vinay Simha BN, Archit Taneja, Rob Clark, Sumit Semwal,
Thierry Reding, David Airlie, open list,
open list:DRM PANEL DRIVERS
On 13 July 2016 at 19:58, John Stultz <john.stultz@linaro.org> wrote:
> On Wed, Jul 13, 2016 at 9:44 AM, Vinay Simha BN <simhavcs@gmail.com> wrote:
>> 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
>>
>> Cc: Archit Taneja <archit.taneja@gmail.com>
>> Cc: Rob Clark <robdclark@gmail.com>
>> Cc: Sumit Semwal <sumit.semwal@linaro.org>
>> Cc: John Stultz <john.stultz@linaro.org>
>> Cc: Emil Velikov <emil.l.velikov@gmail.com>
>> Cc: Thierry Reding <thierry.reding@gmail.com>
>> Cc: David Airlie <airlied@linux.ie>
>> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
>> Signed-off-by: John Stultz <john.stultz@linaro.org>
>> Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
>
> Just fyi, I've re-integrated this patch set into my flo-WIP branch and
> its working well.
>
> I dunno if its of any use, but:
> Tested-by: John Stultz <john.stultz@linaro.org>
>
It always is. Thank you!
Vinay, thanks for the patience and I hope you grok the reason behind
the requested changes.
The patch is
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Regards,
Emil
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v2 3/4] drm/dsi: Implement dcs set/get display brightness
2016-07-13 16:44 ` [PATCH v2 3/4] drm/dsi: Implement dcs set/get display brightness Vinay Simha BN
@ 2016-07-14 21:20 ` Emil Velikov
0 siblings, 0 replies; 7+ messages in thread
From: Emil Velikov @ 2016-07-14 21:20 UTC (permalink / raw)
To: Vinay Simha BN; +Cc: open list, open list:DRM DRIVERS, Archit Taneja
On 13 July 2016 at 17:44, Vinay Simha BN <simhavcs@gmail.com> wrote:
> +int mipi_dsi_dcs_get_display_brightness(struct mipi_dsi_device *dsi,
> + u16 *brightness)
> +{
> + ssize_t err;
> +
> + err = mipi_dsi_dcs_read(dsi, MIPI_DCS_GET_DISPLAY_BRIGHTNESS,
> + brightness, sizeof(*brightness));
> + if (err < 0) {
> + if (err == 0)
Something looks fishy here. This can never be true, can it ?
-Emil
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2016-07-14 21:20 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-07-13 16:44 [PATCH 1/4] dt-bindings: Add Japan Display Inc vendor id Vinay Simha BN
2016-07-13 16:44 ` [PATCH v2 2/4] dt-bindings: Add jdi lt070me05000 panel bindings Vinay Simha BN
2016-07-13 16:44 ` [PATCH v2 3/4] drm/dsi: Implement dcs set/get display brightness Vinay Simha BN
2016-07-14 21:20 ` Emil Velikov
2016-07-13 16:44 ` [PATCH v8 4/4] drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel Vinay Simha BN
2016-07-13 18:58 ` John Stultz
2016-07-14 21:18 ` Emil Velikov
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