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Support for tft displays based on ilitek,ili9486

PATCH Superseded Kamlesh Gurudasani 1 participant 4 messages Jan 27, 2020

Subsystems (4)
Device tree bindings DRM drivers DRM misc DRM driver for ilitek ILI9486 panels

v3 of 5 Superseded Latest is v5 →

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Kamlesh Gurudasani

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#0 lore raw

v3 cover Support for tft displays based on ilitek,ili9486

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

v3 changes:
* added vendor prefix patch to this series instead of seperate patch

Kamlesh Gurudasani (3):
dt-bindings: add vendor prefix for OzzMaker and Waveshare Electronics
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 ++++++
 .../devicetree/bindings/vendor-prefixes.yaml       |   4 +
 MAINTAINERS                                        |   7 +
 drivers/gpu/drm/tiny/Kconfig                       |  14 +
 drivers/gpu/drm/tiny/Makefile                      |   1 +
 drivers/gpu/drm/tiny/ili9486.c                     | 283 +++++++++++++++++++++
 6 files changed, 388 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
 create mode 100644 drivers/gpu/drm/tiny/ili9486.c
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2.7.4
author maintainer
#1 lore raw

PATCH v3 1/3 dt-bindings: add vendor prefix for OzzMaker and Waveshare Electronics

Add vendor prefix for OzzMaker [1] and Waveshare Electronics [2] Both are display manufacturers

[1] https://ozzmaker.com/about/
[2] https://www.waveshare.com/contact_us

Signed-off-by Kamlesh Gurudasani <[email protected]>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 4 ++++
 1 file changed, 4 insertions(+)
Documentation/devicetree/bindings/vendor-prefixes.yaml +4 -0
index ac4804d..dfb926d 100644
@@ -721,6 +721,8 @@ patternProperties:
     description: OmniVision Technologies
   "^oxsemi,.*":
     description: Oxford Semiconductor, Ltd.
+  "^ozzmaker,.*":
+    description: OzzMaker
   "^panasonic,.*":
     description: Panasonic Corporation
   "^parade,.*":

@@ -1038,6 +1040,8 @@ patternProperties:
     description: Vision Optical Technology Co., Ltd.
   "^vxt,.*":
     description: VXT Ltd
+  "^waveshare,.*":
+    description: Waveshare Electronics
   "^wd,.*":
     description: Western Digital Corp.
   "^wetek,.*":
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2.7.4
author maintainer
#2 lore raw

PATCH v3 2/3 dt-bindings: add binding for tft displays based on ilitek, ili9486

In reply to 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 <[email protected]>

---

v2 changes:
* Changing file from txt to yaml format
* removed ilitek,ili9486 from compatible string

v3 changes:
* no changes

---
 .../bindings/display/ilitek,ili9486.yaml           | 79 ++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
Documentation/devicetree/bindings/display/ilitek,ili9486.yaml new file +79 -0
new file mode 100644
index 0000000..dd306c88
@@ -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 <[email protected]>
+
+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>;
+            };
+    };
+
+...
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2.7.4
author maintainer
#3 lore raw

PATCH v3 3/3 drm/tinydrm: add support for tft displays based on ilitek, ili9486

In reply to 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 <[email protected]>

---

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

v3 changes:
* no changes

---
 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
MAINTAINERS +7 -0
index 16423f5..30dd396 100644
@@ -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 <[email protected]>
+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 <[email protected]>
 T:	git git://anongit.freedesktop.org/drm/drm-misc
drivers/gpu/drm/tiny/Kconfig +14 -0
index a866421..4160e74 100644
@@ -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
drivers/gpu/drm/tiny/Makefile +1 -0
index 896cf31..c96ceee 100644
@@ -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
drivers/gpu/drm/tiny/ili9486.c new file +283 -0

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