* [PATCH v2 0/2] Support for tft displays based on ilitek,ili9486
@ 2020-01-26 17:39 ` Kamlesh Gurudasani
0 siblings, 0 replies; 10+ messages in thread
From: Kamlesh Gurudasani @ 2020-01-26 17:39 UTC (permalink / raw)
To: noralf, Rob Herring, Sam Ravnborg
Cc: devicetree, dri-devel, Kamlesh Gurudasani
The goal of this series is to get the displays based on ilitek,ili9486
working.
Ozzmaker, Piscreen and waveshare,rpi-lcd-35 are such displays.
v2 changes:
* Changing file from txt to yaml format
* removed ilitek,ili9486 from compatible string
* assignment of dbi_command before registration
* made dc and reset gpio compulsory
* typos and unwanted comments removed
* changed the name of function which were display specific
* arranged the Makefile entries in alphabetical order
Kamlesh Gurudasani (2):
dt-bindings: add binding for tft displays based on ilitek,ili9486
drm/tinydrm: add support for tft displays based on ilitek,ili9486
.../bindings/display/ilitek,ili9486.yaml | 79 ++++++
MAINTAINERS | 7 +
drivers/gpu/drm/tiny/Kconfig | 14 +
drivers/gpu/drm/tiny/Makefile | 1 +
drivers/gpu/drm/tiny/ili9486.c | 283 +++++++++++++++++++++
5 files changed, 384 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
create mode 100644 drivers/gpu/drm/tiny/ili9486.c
--
2.7.4
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v2 0/2] Support for tft displays based on ilitek,ili9486
@ 2020-01-26 17:39 ` Kamlesh Gurudasani
0 siblings, 0 replies; 10+ messages in thread
From: Kamlesh Gurudasani @ 2020-01-26 17:39 UTC (permalink / raw)
To: noralf, Rob Herring, Sam Ravnborg
Cc: devicetree, Kamlesh Gurudasani, dri-devel
The goal of this series is to get the displays based on ilitek,ili9486
working.
Ozzmaker, Piscreen and waveshare,rpi-lcd-35 are such displays.
v2 changes:
* Changing file from txt to yaml format
* removed ilitek,ili9486 from compatible string
* assignment of dbi_command before registration
* made dc and reset gpio compulsory
* typos and unwanted comments removed
* changed the name of function which were display specific
* arranged the Makefile entries in alphabetical order
Kamlesh Gurudasani (2):
dt-bindings: add binding for tft displays based on ilitek,ili9486
drm/tinydrm: add support for tft displays based on ilitek,ili9486
.../bindings/display/ilitek,ili9486.yaml | 79 ++++++
MAINTAINERS | 7 +
drivers/gpu/drm/tiny/Kconfig | 14 +
drivers/gpu/drm/tiny/Makefile | 1 +
drivers/gpu/drm/tiny/ili9486.c | 283 +++++++++++++++++++++
5 files changed, 384 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
create mode 100644 drivers/gpu/drm/tiny/ili9486.c
--
2.7.4
_______________________________________________
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 1/2] dt-bindings: add binding for tft displays based on ilitek,ili9486
2020-01-26 17:39 ` Kamlesh Gurudasani
@ 2020-01-26 17:42 ` Kamlesh Gurudasani
-1 siblings, 0 replies; 10+ messages in thread
From: Kamlesh Gurudasani @ 2020-01-26 17:42 UTC (permalink / raw)
To: noralf, Rob Herring, Sam Ravnborg
Cc: devicetree, dri-devel, Kamlesh Gurudasani
This binding is for the tft displays based on ilitek,ili9486.
ozzmaker,piscreen and waveshare,rpi-lcd-35 are such displays
Signed-off-by: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
---
v2 changes:
* Changing file from txt to yaml format
* removed ilitek,ili9486 from compatible string
---
.../bindings/display/ilitek,ili9486.yaml | 79 ++++++++++++++++++++++
1 file changed, 79 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
diff --git a/Documentation/devicetree/bindings/display/ilitek,ili9486.yaml b/Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
new file mode 100644
index 0000000..dd306c88
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/ilitek,ili9486.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ilitek ILI9486 display panels device tree bindings
+
+maintainers:
+ - Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
+
+description:
+ This binding is for display panels using an Ilitek ILI9486 controller in SPI
+ mode.
+
+allOf:
+ - $ref: panel/panel-common.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - description:
+ Waveshare 3.5" 320x480 Color TFT LCD
+ items:
+ - enum:
+ - waveshare,rpi-lcd-35
+ - const: ilitek,ili9486
+ - description:
+ Ozzmaker 3.5" 320x480 Color TFT LCD
+ items:
+ - enum:
+ - ozzmaker,piscreen
+ - const: ilitek,ili9486
+
+ spi-max-frequency:
+ maximum: 32000000
+
+ dc-gpios:
+ maxItems: 1
+ description: Display data/command selection (D/CX)
+
+ backlight: true
+ reg: true
+ reset-gpios: true
+ rotation: true
+
+required:
+ - compatible
+ - reg
+ - dc-gpios
+ - reset-gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ backlight: backlight {
+ compatible = "gpio-backlight";
+ gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
+ };
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+
+ display@0{
+ compatible = "waveshare,rpi-lcd-35";
+ reg = <0>;
+ spi-max-frequency = <32000000>;
+ dc-gpios = <&gpio0 24 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&gpio0 25 GPIO_ACTIVE_HIGH>;
+ rotation = <180>;
+ backlight = <&backlight>;
+ };
+ };
+
+...
--
2.7.4
^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v2 1/2] dt-bindings: add binding for tft displays based on ilitek, ili9486
@ 2020-01-26 17:42 ` Kamlesh Gurudasani
0 siblings, 0 replies; 10+ messages in thread
From: Kamlesh Gurudasani @ 2020-01-26 17:42 UTC (permalink / raw)
To: noralf, Rob Herring, Sam Ravnborg
Cc: devicetree, Kamlesh Gurudasani, dri-devel
This binding is for the tft displays based on ilitek,ili9486.
ozzmaker,piscreen and waveshare,rpi-lcd-35 are such displays
Signed-off-by: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
---
v2 changes:
* Changing file from txt to yaml format
* removed ilitek,ili9486 from compatible string
---
.../bindings/display/ilitek,ili9486.yaml | 79 ++++++++++++++++++++++
1 file changed, 79 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
diff --git a/Documentation/devicetree/bindings/display/ilitek,ili9486.yaml b/Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
new file mode 100644
index 0000000..dd306c88
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/ilitek,ili9486.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ilitek ILI9486 display panels device tree bindings
+
+maintainers:
+ - Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
+
+description:
+ This binding is for display panels using an Ilitek ILI9486 controller in SPI
+ mode.
+
+allOf:
+ - $ref: panel/panel-common.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - description:
+ Waveshare 3.5" 320x480 Color TFT LCD
+ items:
+ - enum:
+ - waveshare,rpi-lcd-35
+ - const: ilitek,ili9486
+ - description:
+ Ozzmaker 3.5" 320x480 Color TFT LCD
+ items:
+ - enum:
+ - ozzmaker,piscreen
+ - const: ilitek,ili9486
+
+ spi-max-frequency:
+ maximum: 32000000
+
+ dc-gpios:
+ maxItems: 1
+ description: Display data/command selection (D/CX)
+
+ backlight: true
+ reg: true
+ reset-gpios: true
+ rotation: true
+
+required:
+ - compatible
+ - reg
+ - dc-gpios
+ - reset-gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ backlight: backlight {
+ compatible = "gpio-backlight";
+ gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
+ };
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+
+ display@0{
+ compatible = "waveshare,rpi-lcd-35";
+ reg = <0>;
+ spi-max-frequency = <32000000>;
+ dc-gpios = <&gpio0 24 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&gpio0 25 GPIO_ACTIVE_HIGH>;
+ rotation = <180>;
+ backlight = <&backlight>;
+ };
+ };
+
+...
--
2.7.4
_______________________________________________
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 2/2] drm/tinydrm: add support for tft displays based on ilitek,ili9486
2020-01-26 17:39 ` Kamlesh Gurudasani
@ 2020-01-26 17:42 ` Kamlesh Gurudasani
-1 siblings, 0 replies; 10+ messages in thread
From: Kamlesh Gurudasani @ 2020-01-26 17:42 UTC (permalink / raw)
To: noralf, Rob Herring, Sam Ravnborg
Cc: devicetree, dri-devel, Kamlesh Gurudasani
This adds support fot ilitek,ili9486 based displays with shift register
in front of controller.
Ozzmaker,Piscreen and Waveshare,rpi-lcd-35 are such displays.
Signed-off-by: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
---
v2 changes:
* assignment of dbi_command before registration
* made dc and reset gpio compulsory
* typos and unwanted comments removed
* changed the name of function which were display specific
* arranged the Makefile entries in alphabetical order
---
MAINTAINERS | 7 +
drivers/gpu/drm/tiny/Kconfig | 14 ++
drivers/gpu/drm/tiny/Makefile | 1 +
drivers/gpu/drm/tiny/ili9486.c | 283 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 305 insertions(+)
create mode 100644 drivers/gpu/drm/tiny/ili9486.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 16423f5..30dd396 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5233,6 +5233,13 @@ S: Maintained
F: drivers/gpu/drm/tiny/ili9225.c
F: Documentation/devicetree/bindings/display/ilitek,ili9225.txt
+DRM DRIVER FOR ILITEK ILI9486 PANELS
+M: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
+T: git git://anongit.freedesktop.org/drm/drm-misc
+S: Maintained
+F: drivers/gpu/drm/tiny/ili9486.c
+F: Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
+
DRM DRIVER FOR HX8357D PANELS
M: Eric Anholt <eric@anholt.net>
T: git git://anongit.freedesktop.org/drm/drm-misc
diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig
index a866421..4160e74 100644
--- a/drivers/gpu/drm/tiny/Kconfig
+++ b/drivers/gpu/drm/tiny/Kconfig
@@ -47,6 +47,20 @@ config TINYDRM_ILI9341
If M is selected the module will be called ili9341.
+config TINYDRM_ILI9486
+ tristate "DRM support for ILI9486 display panels"
+ depends on DRM && SPI
+ select DRM_KMS_HELPER
+ select DRM_KMS_CMA_HELPER
+ select DRM_MIPI_DBI
+ select BACKLIGHT_CLASS_DEVICE
+ help
+ DRM driver for the following Ilitek ILI9486 panels:
+ * PISCREEN 3.5" 320x480 TFT (Ozzmaker 3.5")
+ * RPILCD 3.5" 320x480 TFT (Waveshare 3.5")
+
+ If M is selected the module will be called ili9486.
+
config TINYDRM_MI0283QT
tristate "DRM support for MI0283QT"
depends on DRM && SPI
diff --git a/drivers/gpu/drm/tiny/Makefile b/drivers/gpu/drm/tiny/Makefile
index 896cf31..c96ceee 100644
--- a/drivers/gpu/drm/tiny/Makefile
+++ b/drivers/gpu/drm/tiny/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_GM12U320) += gm12u320.o
obj-$(CONFIG_TINYDRM_HX8357D) += hx8357d.o
obj-$(CONFIG_TINYDRM_ILI9225) += ili9225.o
obj-$(CONFIG_TINYDRM_ILI9341) += ili9341.o
+obj-$(CONFIG_TINYDRM_ILI9486) += ili9486.o
obj-$(CONFIG_TINYDRM_MI0283QT) += mi0283qt.o
obj-$(CONFIG_TINYDRM_REPAPER) += repaper.o
obj-$(CONFIG_TINYDRM_ST7586) += st7586.o
diff --git a/drivers/gpu/drm/tiny/ili9486.c b/drivers/gpu/drm/tiny/ili9486.c
new file mode 100644
index 0000000..e960b16
--- /dev/null
+++ b/drivers/gpu/drm/tiny/ili9486.c
@@ -0,0 +1,283 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DRM driver for Ilitek ILI9486 panels
+ *
+ * Copyright 2020 Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+#include <video/mipi_display.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
+#include <drm/drm_modeset_helper.h>
+
+#define ILI9486_ITFCTR1 0xb0
+#define ILI9486_PWCTRL1 0xc2
+#define ILI9486_VMCTRL1 0xc5
+#define ILI9486_PGAMCTRL 0xe0
+#define ILI9486_NGAMCTRL 0xe1
+#define ILI9486_DGAMCTRL 0xe2
+#define ILI9486_MADCTL_BGR BIT(3)
+#define ILI9486_MADCTL_MV BIT(5)
+#define ILI9486_MADCTL_MX BIT(6)
+#define ILI9486_MADCTL_MY BIT(7)
+
+/*
+ * The PiScreen/waveshare rpi-lcd-35 has a SPI to 16-bit parallel bus converter
+ * in front of the display controller. This means that 8-bit values have to be
+ * transferred as 16-bit.
+ */
+static int waveshare_command(struct mipi_dbi *mipi, u8 *cmd, u8 *par, size_t num)
+{
+ struct spi_device *spi = mipi->spi;
+ void *data = par;
+ u32 speed_hz;
+ int i, ret;
+ u16 *buf;
+
+ buf = kmalloc(32 * sizeof(u16), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ /*
+ * The displays are Raspberry Pi HATs and connected to the 8-bit only
+ * SPI controller, so 16-bit command and parameters need byte swapping
+ * before being transferred as 8-bit on the big endian SPI bus.
+ * Pixel data bytes have already been swapped before this function is
+ * called.
+ */
+ buf[0] = cpu_to_be16(*cmd);
+ gpiod_set_value_cansleep(mipi->dc, 0);
+ speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 2);
+ ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, buf, 2);
+ if (ret || !num)
+ goto free;
+
+ /* 8-bit configuration data, not 16-bit pixel data */
+ if (num <= 32) {
+ for (i = 0; i < num; i++)
+ buf[i] = cpu_to_be16(par[i]);
+ num *= 2;
+ speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num);
+ data = buf;
+ }
+
+ gpiod_set_value_cansleep(mipi->dc, 1);
+ ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, data, num);
+ free:
+ kfree(buf);
+
+ return ret;
+}
+
+static void waveshare_enable(struct drm_simple_display_pipe *pipe,
+ struct drm_crtc_state *crtc_state,
+ struct drm_plane_state *plane_state)
+{
+ struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+ struct mipi_dbi *dbi = &dbidev->dbi;
+ u8 addr_mode;
+ int ret, idx;
+
+ if (!drm_dev_enter(pipe->crtc.dev, &idx))
+ return;
+
+ DRM_DEBUG_KMS("\n");
+
+ ret = mipi_dbi_poweron_conditional_reset(dbidev);
+ if (ret < 0)
+ goto out_exit;
+ if (ret == 1)
+ goto out_enable;
+
+ mipi_dbi_command(dbi, ILI9486_ITFCTR1);
+ mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
+ msleep(250);
+
+ mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, 0x55);
+
+ mipi_dbi_command(dbi, ILI9486_PWCTRL1, 0x44);
+
+ mipi_dbi_command(dbi, ILI9486_VMCTRL1, 0x00, 0x00, 0x00, 0x00);
+
+ mipi_dbi_command(dbi, ILI9486_PGAMCTRL,
+ 0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98,
+ 0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x0);
+ mipi_dbi_command(dbi, ILI9486_NGAMCTRL,
+ 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
+ 0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00);
+ mipi_dbi_command(dbi, ILI9486_DGAMCTRL,
+ 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
+ 0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00);
+
+ mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
+ msleep(100);
+
+ out_enable:
+ switch (dbidev->rotation) {
+ case 90:
+ addr_mode = ILI9486_MADCTL_MY;
+ break;
+ case 180:
+ addr_mode = ILI9486_MADCTL_MV;
+ break;
+ case 270:
+ addr_mode = ILI9486_MADCTL_MX;
+ break;
+ default:
+ addr_mode = ILI9486_MADCTL_MV | ILI9486_MADCTL_MY |
+ ILI9486_MADCTL_MX;
+ break;
+ }
+ addr_mode |= ILI9486_MADCTL_BGR;
+ mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
+ mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
+ out_exit:
+ drm_dev_exit(idx);
+}
+
+static const struct drm_simple_display_pipe_funcs waveshare_pipe_funcs = {
+ .enable = waveshare_enable,
+ .disable = mipi_dbi_pipe_disable,
+ .update = mipi_dbi_pipe_update,
+ .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
+};
+
+static const struct drm_display_mode waveshare_mode = {
+ DRM_SIMPLE_MODE(480, 320, 73, 49),
+};
+
+DEFINE_DRM_GEM_CMA_FOPS(ili9486_fops);
+
+static struct drm_driver ili9486_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+ .fops = &ili9486_fops,
+ .release = mipi_dbi_release,
+ DRM_GEM_CMA_VMAP_DRIVER_OPS,
+ .debugfs_init = mipi_dbi_debugfs_init,
+ .name = "ili9486",
+ .desc = "Ilitek ILI9486",
+ .date = "20200118",
+ .major = 1,
+ .minor = 0,
+};
+
+static const struct of_device_id ili9486_of_match[] = {
+ { .compatible = "waveshare,rpi-lcd-35" },
+ { .compatible = "ozzmaker,piscreen" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ili9486_of_match);
+
+static const struct spi_device_id ili9486_id[] = {
+ { "ili9486", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, ili9486_id);
+
+static int ili9486_probe(struct spi_device *spi)
+{
+ struct device *dev = &spi->dev;
+ struct mipi_dbi_dev *dbidev;
+ struct drm_device *drm;
+ struct mipi_dbi *dbi;
+ struct gpio_desc *dc;
+ u32 rotation = 0;
+ int ret;
+
+ dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
+ if (!dbidev)
+ return -ENOMEM;
+
+ dbi = &dbidev->dbi;
+ drm = &dbidev->drm;
+ ret = devm_drm_dev_init(dev, drm, &ili9486_driver);
+ if (ret) {
+ kfree(dbidev);
+ return ret;
+ }
+
+ drm_mode_config_init(drm);
+
+ dbi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(dbi->reset)) {
+ DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
+ return PTR_ERR(dbi->reset);
+ }
+
+ dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW);
+ if (IS_ERR(dc)) {
+ DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
+ return PTR_ERR(dc);
+ }
+
+ dbidev->backlight = devm_of_find_backlight(dev);
+ if (IS_ERR(dbidev->backlight))
+ return PTR_ERR(dbidev->backlight);
+
+ device_property_read_u32(dev, "rotation", &rotation);
+
+ ret = mipi_dbi_spi_init(spi, dbi, dc);
+ if (ret)
+ return ret;
+
+ dbi->command = waveshare_command;
+ dbi->read_commands = NULL;
+
+ ret = mipi_dbi_dev_init(dbidev, &waveshare_pipe_funcs, &waveshare_mode, rotation);
+ if (ret)
+ return ret;
+
+ drm_mode_config_reset(drm);
+
+ ret = drm_dev_register(drm, 0);
+ if (ret)
+ return ret;
+
+ spi_set_drvdata(spi, drm);
+
+ drm_fbdev_generic_setup(drm, 0);
+
+ return 0;
+}
+
+static int ili9486_remove(struct spi_device *spi)
+{
+ struct drm_device *drm = spi_get_drvdata(spi);
+
+ drm_dev_unplug(drm);
+ drm_atomic_helper_shutdown(drm);
+
+ return 0;
+}
+
+static void ili9486_shutdown(struct spi_device *spi)
+{
+ drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+}
+
+static struct spi_driver ili9486_spi_driver = {
+ .driver = {
+ .name = "ili9486",
+ .of_match_table = ili9486_of_match,
+ },
+ .id_table = ili9486_id,
+ .probe = ili9486_probe,
+ .remove = ili9486_remove,
+ .shutdown = ili9486_shutdown,
+};
+module_spi_driver(ili9486_spi_driver);
+
+MODULE_DESCRIPTION("Ilitek ILI9486 DRM driver");
+MODULE_AUTHOR("Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>");
+MODULE_LICENSE("GPL");
--
2.7.4
^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v2 2/2] drm/tinydrm: add support for tft displays based on ilitek, ili9486
@ 2020-01-26 17:42 ` Kamlesh Gurudasani
0 siblings, 0 replies; 10+ messages in thread
From: Kamlesh Gurudasani @ 2020-01-26 17:42 UTC (permalink / raw)
To: noralf, Rob Herring, Sam Ravnborg
Cc: devicetree, Kamlesh Gurudasani, dri-devel
This adds support fot ilitek,ili9486 based displays with shift register
in front of controller.
Ozzmaker,Piscreen and Waveshare,rpi-lcd-35 are such displays.
Signed-off-by: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
---
v2 changes:
* assignment of dbi_command before registration
* made dc and reset gpio compulsory
* typos and unwanted comments removed
* changed the name of function which were display specific
* arranged the Makefile entries in alphabetical order
---
MAINTAINERS | 7 +
drivers/gpu/drm/tiny/Kconfig | 14 ++
drivers/gpu/drm/tiny/Makefile | 1 +
drivers/gpu/drm/tiny/ili9486.c | 283 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 305 insertions(+)
create mode 100644 drivers/gpu/drm/tiny/ili9486.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 16423f5..30dd396 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5233,6 +5233,13 @@ S: Maintained
F: drivers/gpu/drm/tiny/ili9225.c
F: Documentation/devicetree/bindings/display/ilitek,ili9225.txt
+DRM DRIVER FOR ILITEK ILI9486 PANELS
+M: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
+T: git git://anongit.freedesktop.org/drm/drm-misc
+S: Maintained
+F: drivers/gpu/drm/tiny/ili9486.c
+F: Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
+
DRM DRIVER FOR HX8357D PANELS
M: Eric Anholt <eric@anholt.net>
T: git git://anongit.freedesktop.org/drm/drm-misc
diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig
index a866421..4160e74 100644
--- a/drivers/gpu/drm/tiny/Kconfig
+++ b/drivers/gpu/drm/tiny/Kconfig
@@ -47,6 +47,20 @@ config TINYDRM_ILI9341
If M is selected the module will be called ili9341.
+config TINYDRM_ILI9486
+ tristate "DRM support for ILI9486 display panels"
+ depends on DRM && SPI
+ select DRM_KMS_HELPER
+ select DRM_KMS_CMA_HELPER
+ select DRM_MIPI_DBI
+ select BACKLIGHT_CLASS_DEVICE
+ help
+ DRM driver for the following Ilitek ILI9486 panels:
+ * PISCREEN 3.5" 320x480 TFT (Ozzmaker 3.5")
+ * RPILCD 3.5" 320x480 TFT (Waveshare 3.5")
+
+ If M is selected the module will be called ili9486.
+
config TINYDRM_MI0283QT
tristate "DRM support for MI0283QT"
depends on DRM && SPI
diff --git a/drivers/gpu/drm/tiny/Makefile b/drivers/gpu/drm/tiny/Makefile
index 896cf31..c96ceee 100644
--- a/drivers/gpu/drm/tiny/Makefile
+++ b/drivers/gpu/drm/tiny/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_GM12U320) += gm12u320.o
obj-$(CONFIG_TINYDRM_HX8357D) += hx8357d.o
obj-$(CONFIG_TINYDRM_ILI9225) += ili9225.o
obj-$(CONFIG_TINYDRM_ILI9341) += ili9341.o
+obj-$(CONFIG_TINYDRM_ILI9486) += ili9486.o
obj-$(CONFIG_TINYDRM_MI0283QT) += mi0283qt.o
obj-$(CONFIG_TINYDRM_REPAPER) += repaper.o
obj-$(CONFIG_TINYDRM_ST7586) += st7586.o
diff --git a/drivers/gpu/drm/tiny/ili9486.c b/drivers/gpu/drm/tiny/ili9486.c
new file mode 100644
index 0000000..e960b16
--- /dev/null
+++ b/drivers/gpu/drm/tiny/ili9486.c
@@ -0,0 +1,283 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DRM driver for Ilitek ILI9486 panels
+ *
+ * Copyright 2020 Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+#include <video/mipi_display.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
+#include <drm/drm_modeset_helper.h>
+
+#define ILI9486_ITFCTR1 0xb0
+#define ILI9486_PWCTRL1 0xc2
+#define ILI9486_VMCTRL1 0xc5
+#define ILI9486_PGAMCTRL 0xe0
+#define ILI9486_NGAMCTRL 0xe1
+#define ILI9486_DGAMCTRL 0xe2
+#define ILI9486_MADCTL_BGR BIT(3)
+#define ILI9486_MADCTL_MV BIT(5)
+#define ILI9486_MADCTL_MX BIT(6)
+#define ILI9486_MADCTL_MY BIT(7)
+
+/*
+ * The PiScreen/waveshare rpi-lcd-35 has a SPI to 16-bit parallel bus converter
+ * in front of the display controller. This means that 8-bit values have to be
+ * transferred as 16-bit.
+ */
+static int waveshare_command(struct mipi_dbi *mipi, u8 *cmd, u8 *par, size_t num)
+{
+ struct spi_device *spi = mipi->spi;
+ void *data = par;
+ u32 speed_hz;
+ int i, ret;
+ u16 *buf;
+
+ buf = kmalloc(32 * sizeof(u16), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ /*
+ * The displays are Raspberry Pi HATs and connected to the 8-bit only
+ * SPI controller, so 16-bit command and parameters need byte swapping
+ * before being transferred as 8-bit on the big endian SPI bus.
+ * Pixel data bytes have already been swapped before this function is
+ * called.
+ */
+ buf[0] = cpu_to_be16(*cmd);
+ gpiod_set_value_cansleep(mipi->dc, 0);
+ speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 2);
+ ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, buf, 2);
+ if (ret || !num)
+ goto free;
+
+ /* 8-bit configuration data, not 16-bit pixel data */
+ if (num <= 32) {
+ for (i = 0; i < num; i++)
+ buf[i] = cpu_to_be16(par[i]);
+ num *= 2;
+ speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num);
+ data = buf;
+ }
+
+ gpiod_set_value_cansleep(mipi->dc, 1);
+ ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, data, num);
+ free:
+ kfree(buf);
+
+ return ret;
+}
+
+static void waveshare_enable(struct drm_simple_display_pipe *pipe,
+ struct drm_crtc_state *crtc_state,
+ struct drm_plane_state *plane_state)
+{
+ struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+ struct mipi_dbi *dbi = &dbidev->dbi;
+ u8 addr_mode;
+ int ret, idx;
+
+ if (!drm_dev_enter(pipe->crtc.dev, &idx))
+ return;
+
+ DRM_DEBUG_KMS("\n");
+
+ ret = mipi_dbi_poweron_conditional_reset(dbidev);
+ if (ret < 0)
+ goto out_exit;
+ if (ret == 1)
+ goto out_enable;
+
+ mipi_dbi_command(dbi, ILI9486_ITFCTR1);
+ mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
+ msleep(250);
+
+ mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, 0x55);
+
+ mipi_dbi_command(dbi, ILI9486_PWCTRL1, 0x44);
+
+ mipi_dbi_command(dbi, ILI9486_VMCTRL1, 0x00, 0x00, 0x00, 0x00);
+
+ mipi_dbi_command(dbi, ILI9486_PGAMCTRL,
+ 0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98,
+ 0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x0);
+ mipi_dbi_command(dbi, ILI9486_NGAMCTRL,
+ 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
+ 0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00);
+ mipi_dbi_command(dbi, ILI9486_DGAMCTRL,
+ 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
+ 0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00);
+
+ mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
+ msleep(100);
+
+ out_enable:
+ switch (dbidev->rotation) {
+ case 90:
+ addr_mode = ILI9486_MADCTL_MY;
+ break;
+ case 180:
+ addr_mode = ILI9486_MADCTL_MV;
+ break;
+ case 270:
+ addr_mode = ILI9486_MADCTL_MX;
+ break;
+ default:
+ addr_mode = ILI9486_MADCTL_MV | ILI9486_MADCTL_MY |
+ ILI9486_MADCTL_MX;
+ break;
+ }
+ addr_mode |= ILI9486_MADCTL_BGR;
+ mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
+ mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
+ out_exit:
+ drm_dev_exit(idx);
+}
+
+static const struct drm_simple_display_pipe_funcs waveshare_pipe_funcs = {
+ .enable = waveshare_enable,
+ .disable = mipi_dbi_pipe_disable,
+ .update = mipi_dbi_pipe_update,
+ .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
+};
+
+static const struct drm_display_mode waveshare_mode = {
+ DRM_SIMPLE_MODE(480, 320, 73, 49),
+};
+
+DEFINE_DRM_GEM_CMA_FOPS(ili9486_fops);
+
+static struct drm_driver ili9486_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+ .fops = &ili9486_fops,
+ .release = mipi_dbi_release,
+ DRM_GEM_CMA_VMAP_DRIVER_OPS,
+ .debugfs_init = mipi_dbi_debugfs_init,
+ .name = "ili9486",
+ .desc = "Ilitek ILI9486",
+ .date = "20200118",
+ .major = 1,
+ .minor = 0,
+};
+
+static const struct of_device_id ili9486_of_match[] = {
+ { .compatible = "waveshare,rpi-lcd-35" },
+ { .compatible = "ozzmaker,piscreen" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ili9486_of_match);
+
+static const struct spi_device_id ili9486_id[] = {
+ { "ili9486", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, ili9486_id);
+
+static int ili9486_probe(struct spi_device *spi)
+{
+ struct device *dev = &spi->dev;
+ struct mipi_dbi_dev *dbidev;
+ struct drm_device *drm;
+ struct mipi_dbi *dbi;
+ struct gpio_desc *dc;
+ u32 rotation = 0;
+ int ret;
+
+ dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
+ if (!dbidev)
+ return -ENOMEM;
+
+ dbi = &dbidev->dbi;
+ drm = &dbidev->drm;
+ ret = devm_drm_dev_init(dev, drm, &ili9486_driver);
+ if (ret) {
+ kfree(dbidev);
+ return ret;
+ }
+
+ drm_mode_config_init(drm);
+
+ dbi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(dbi->reset)) {
+ DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
+ return PTR_ERR(dbi->reset);
+ }
+
+ dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW);
+ if (IS_ERR(dc)) {
+ DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
+ return PTR_ERR(dc);
+ }
+
+ dbidev->backlight = devm_of_find_backlight(dev);
+ if (IS_ERR(dbidev->backlight))
+ return PTR_ERR(dbidev->backlight);
+
+ device_property_read_u32(dev, "rotation", &rotation);
+
+ ret = mipi_dbi_spi_init(spi, dbi, dc);
+ if (ret)
+ return ret;
+
+ dbi->command = waveshare_command;
+ dbi->read_commands = NULL;
+
+ ret = mipi_dbi_dev_init(dbidev, &waveshare_pipe_funcs, &waveshare_mode, rotation);
+ if (ret)
+ return ret;
+
+ drm_mode_config_reset(drm);
+
+ ret = drm_dev_register(drm, 0);
+ if (ret)
+ return ret;
+
+ spi_set_drvdata(spi, drm);
+
+ drm_fbdev_generic_setup(drm, 0);
+
+ return 0;
+}
+
+static int ili9486_remove(struct spi_device *spi)
+{
+ struct drm_device *drm = spi_get_drvdata(spi);
+
+ drm_dev_unplug(drm);
+ drm_atomic_helper_shutdown(drm);
+
+ return 0;
+}
+
+static void ili9486_shutdown(struct spi_device *spi)
+{
+ drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+}
+
+static struct spi_driver ili9486_spi_driver = {
+ .driver = {
+ .name = "ili9486",
+ .of_match_table = ili9486_of_match,
+ },
+ .id_table = ili9486_id,
+ .probe = ili9486_probe,
+ .remove = ili9486_remove,
+ .shutdown = ili9486_shutdown,
+};
+module_spi_driver(ili9486_spi_driver);
+
+MODULE_DESCRIPTION("Ilitek ILI9486 DRM driver");
+MODULE_AUTHOR("Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>");
+MODULE_LICENSE("GPL");
--
2.7.4
_______________________________________________
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 2/2] drm/tinydrm: add support for tft displays based on ilitek,ili9486
2020-01-26 17:42 ` [PATCH v2 2/2] drm/tinydrm: add support for tft displays based on ilitek, ili9486 Kamlesh Gurudasani
@ 2020-01-27 13:04 ` Noralf Trønnes
-1 siblings, 0 replies; 10+ messages in thread
From: Noralf Trønnes @ 2020-01-27 13:04 UTC (permalink / raw)
To: Kamlesh Gurudasani, Rob Herring, Sam Ravnborg; +Cc: devicetree, dri-devel
Den 26.01.2020 18.42, skrev Kamlesh Gurudasani:
> This adds support fot ilitek,ili9486 based displays with shift register
> in front of controller.
> Ozzmaker,Piscreen and Waveshare,rpi-lcd-35 are such displays.
>
> Signed-off-by: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
> ---
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
I'll apply the series when the binding is accepted.
Noralf.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v2 2/2] drm/tinydrm: add support for tft displays based on ilitek,ili9486
@ 2020-01-27 13:04 ` Noralf Trønnes
0 siblings, 0 replies; 10+ messages in thread
From: Noralf Trønnes @ 2020-01-27 13:04 UTC (permalink / raw)
To: Kamlesh Gurudasani, Rob Herring, Sam Ravnborg; +Cc: devicetree, dri-devel
Den 26.01.2020 18.42, skrev Kamlesh Gurudasani:
> This adds support fot ilitek,ili9486 based displays with shift register
> in front of controller.
> Ozzmaker,Piscreen and Waveshare,rpi-lcd-35 are such displays.
>
> Signed-off-by: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
> ---
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
I'll apply the series when the binding is accepted.
Noralf.
_______________________________________________
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
* Re: [PATCH v2 1/2] dt-bindings: add binding for tft displays based on ilitek,ili9486
2020-01-26 17:42 ` [PATCH v2 1/2] dt-bindings: add binding for tft displays based on ilitek, ili9486 Kamlesh Gurudasani
@ 2020-01-27 14:27 ` Rob Herring
-1 siblings, 0 replies; 10+ messages in thread
From: Rob Herring @ 2020-01-27 14:27 UTC (permalink / raw)
To: Kamlesh Gurudasani
Cc: noralf, Sam Ravnborg, devicetree, dri-devel, Kamlesh Gurudasani
On Sun, 26 Jan 2020 23:12:00 +0530, Kamlesh Gurudasani wrote:
> This binding is for the tft displays based on ilitek,ili9486.
> ozzmaker,piscreen and waveshare,rpi-lcd-35 are such displays
>
> Signed-off-by: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
> ---
>
> v2 changes:
> * Changing file from txt to yaml format
> * removed ilitek,ili9486 from compatible string
> ---
> .../bindings/display/ilitek,ili9486.yaml | 79 ++++++++++++++++++++++
> 1 file changed, 79 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
>
My bot found errors running 'make dt_binding_check' on your patch:
Documentation/devicetree/bindings/display/simple-framebuffer.example.dts:21.16-37.11: Warning (chosen_node_is_root): /example-0/chosen: chosen node must be at root node
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/ilitek,ili9486.example.dt.yaml: display@0: compatible: ['waveshare,rpi-lcd-35'] is not valid under any of the given schemas (Possible causes of the failure):
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/ilitek,ili9486.example.dt.yaml: display@0: compatible: ['waveshare,rpi-lcd-35'] is too short
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/ilitek,ili9486.example.dt.yaml: display@0: compatible:0: 'waveshare,rpi-lcd-35' is not one of ['ozzmaker,piscreen']
See https://patchwork.ozlabs.org/patch/1229397
Please check and re-submit.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v2 1/2] dt-bindings: add binding for tft displays based on ilitek,ili9486
@ 2020-01-27 14:27 ` Rob Herring
0 siblings, 0 replies; 10+ messages in thread
From: Rob Herring @ 2020-01-27 14:27 UTC (permalink / raw)
To: Kamlesh Gurudasani
Cc: devicetree, Kamlesh Gurudasani, Sam Ravnborg, dri-devel
On Sun, 26 Jan 2020 23:12:00 +0530, Kamlesh Gurudasani wrote:
> This binding is for the tft displays based on ilitek,ili9486.
> ozzmaker,piscreen and waveshare,rpi-lcd-35 are such displays
>
> Signed-off-by: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
> ---
>
> v2 changes:
> * Changing file from txt to yaml format
> * removed ilitek,ili9486 from compatible string
> ---
> .../bindings/display/ilitek,ili9486.yaml | 79 ++++++++++++++++++++++
> 1 file changed, 79 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
>
My bot found errors running 'make dt_binding_check' on your patch:
Documentation/devicetree/bindings/display/simple-framebuffer.example.dts:21.16-37.11: Warning (chosen_node_is_root): /example-0/chosen: chosen node must be at root node
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/ilitek,ili9486.example.dt.yaml: display@0: compatible: ['waveshare,rpi-lcd-35'] is not valid under any of the given schemas (Possible causes of the failure):
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/ilitek,ili9486.example.dt.yaml: display@0: compatible: ['waveshare,rpi-lcd-35'] is too short
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/ilitek,ili9486.example.dt.yaml: display@0: compatible:0: 'waveshare,rpi-lcd-35' is not one of ['ozzmaker,piscreen']
See https://patchwork.ozlabs.org/patch/1229397
Please check and re-submit.
_______________________________________________
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
end of thread, other threads:[~2020-01-27 14:27 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-01-26 17:39 [PATCH v2 0/2] Support for tft displays based on ilitek,ili9486 Kamlesh Gurudasani
2020-01-26 17:39 ` Kamlesh Gurudasani
2020-01-26 17:42 ` [PATCH v2 1/2] dt-bindings: add binding " Kamlesh Gurudasani
2020-01-26 17:42 ` [PATCH v2 1/2] dt-bindings: add binding for tft displays based on ilitek, ili9486 Kamlesh Gurudasani
2020-01-27 14:27 ` [PATCH v2 1/2] dt-bindings: add binding for tft displays based on ilitek,ili9486 Rob Herring
2020-01-27 14:27 ` Rob Herring
2020-01-26 17:42 ` [PATCH v2 2/2] drm/tinydrm: add support " Kamlesh Gurudasani
2020-01-26 17:42 ` [PATCH v2 2/2] drm/tinydrm: add support for tft displays based on ilitek, ili9486 Kamlesh Gurudasani
2020-01-27 13:04 ` [PATCH v2 2/2] drm/tinydrm: add support for tft displays based on ilitek,ili9486 Noralf Trønnes
2020-01-27 13:04 ` Noralf Trønnes
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