Commit e0654264 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'backlight-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight 

Pull backlight updates from Lee Jones:
 "Fix-ups:
   - Remove unused BACKLIGHT_LCD_SUPPORT symbol
   - Remove unused BACKLIGHT_CLASS_DEVICE dependencies
   - Add DT support to lm3630a_bl

  Bug Fixes:
   - Fix error path issues in lm3630a_bl"

* tag 'backlight-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: lm3630a: Add firmware node support
  dt-bindings: backlight: Add lm3630a bindings
  backlight: lm3630a: Return 0 on success in update_status functions
  video: lcd: Remove useless BACKLIGHT_CLASS_DEVICE dependencies
  video: backlight: Remove useless BACKLIGHT_LCD_SUPPORT kernel symbol
parents ebcf5bb2 8fbce8ef

Documentation/devicetree/bindings/leds/backlight/lm3630a-backlight.yaml

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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/leds/backlight/lm3630a-backlight.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: TI LM3630A High-Efficiency Dual-String White LED



maintainers:

  - Lee Jones <lee.jones@linaro.org>

  - Daniel Thompson <daniel.thompson@linaro.org>

  - Jingoo Han <jingoohan1@gmail.com>



description: |

  The LM3630A is a current-mode boost converter which supplies the power and

  controls the current in up to two strings of 10 LEDs per string.

  https://www.ti.com/product/LM3630A



properties:

  compatible:

    const: ti,lm3630a



  reg:

    maxItems: 1



  ti,linear-mapping-mode:

    description: |

      Enable linear mapping mode. If disabled, then it will use exponential

      mapping mode in which the ramp up/down appears to have a more uniform

      transition to the human eye.

    type: boolean



required:

  - compatible

  - reg



patternProperties:

  "^led@[01]$":

    type: object

    description: |

      Properties for a string of connected LEDs.



    properties:

      reg:

        description: |

          The control bank that is used to program the two current sinks. The

          LM3630A has two control banks (A and B) and are represented as 0 or 1

          in this property. The two current sinks can be controlled

          independently with both banks, or bank A can be configured to control

          both sinks with the led-sources property.

        maxItems: 1

        minimum: 0

        maximum: 1



      label:

        maxItems: 1



      led-sources:

        allOf:

          - minItems: 1

            maxItems: 2

            items:

              minimum: 0

              maximum: 1



      default-brightness:

        description: Default brightness level on boot.

        minimum: 0

        maximum: 255



      max-brightness:

        description: Maximum brightness that is allowed during runtime.

        minimum: 0

        maximum: 255



    required:

      - reg



    additionalProperties: false



additionalProperties: false



examples:

  - |

    i2c {

        #address-cells = <1>;

        #size-cells = <0>;



        led-controller@38 {

                compatible = "ti,lm3630a";

                reg = <0x38>;



                #address-cells = <1>;

                #size-cells = <0>;



                led@0 {

                        reg = <0>;

                        led-sources = <0 1>;

                        label = "lcd-backlight";

                        default-brightness = <200>;

                        max-brightness = <255>;

                };

        };

    };

  - |

    i2c {

        #address-cells = <1>;

        #size-cells = <0>;



        led-controller@38 {

                compatible = "ti,lm3630a";

                reg = <0x38>;



                #address-cells = <1>;

                #size-cells = <0>;



                led@0 {

                        reg = <0>;

                        default-brightness = <150>;

                        ti,linear-mapping-mode;

                };



                led@1 {

                        reg = <1>;

                        default-brightness = <225>;

                        ti,linear-mapping-mode;

                };

        };

    };

arch/unicore32/Kconfig

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@@ -191,7 +191,6 @@ config I2C_EEPROM_AT24 


config LCD_BACKLIGHT

	tristate "LCD Backlight support"

	select BACKLIGHT_LCD_SUPPORT

	select BACKLIGHT_PWM



endmenu

drivers/gpu/drm/Kconfig

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@@ -200,7 +200,6 @@ config DRM_RADEON 
	select POWER_SUPPLY

	select HWMON

	select BACKLIGHT_CLASS_DEVICE

	select BACKLIGHT_LCD_SUPPORT

	select INTERVAL_TREE

	help

	  Choose this option if you have an ATI Radeon graphics card.  There
@@ -221,7 +220,6 @@ config DRM_AMDGPU 
	select POWER_SUPPLY

	select HWMON

	select BACKLIGHT_CLASS_DEVICE

	select BACKLIGHT_LCD_SUPPORT

	select INTERVAL_TREE

	select CHASH

	help

drivers/gpu/drm/bridge/Kconfig

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@@ -76,7 +76,6 @@ config DRM_PARADE_PS8622 
	depends on OF

	select DRM_PANEL

	select DRM_KMS_HELPER

	select BACKLIGHT_LCD_SUPPORT

	select BACKLIGHT_CLASS_DEVICE

	---help---

	  Parade eDP-LVDS bridge chip driver.

drivers/gpu/drm/fsl-dcu/Kconfig

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@@ -2,7 +2,6 @@ config DRM_FSL_DCU 
	tristate "DRM Support for Freescale DCU"

	depends on DRM && OF && ARM && COMMON_CLK

	select BACKLIGHT_CLASS_DEVICE

	select BACKLIGHT_LCD_SUPPORT

	select DRM_KMS_HELPER

	select DRM_KMS_CMA_HELPER

	select DRM_PANEL

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