[V6,0/4] Add support for WLED5

Currently, WLED driver supports only WLED4 peripherals that is present
on pmi8998 and pm660L. This patch series  converts the existing WLED4
bindings from .txt to .yaml format and adds the support for WLED5 peripheral
that is present on PM8150L.

PM8150L WLED supports the following.
    - Two modulators and each sink can use any of the modulator
    - Multiple CABC selection options
    - Multiple brightness width selection (12 bits to 15 bits)

Changes from V1:
	- Rebased on top of the below commit.
	  backlight: qcom-wled: Fix unsigned comparison to zero

Changes from V2:
	- Addressed Bjorn's comments by splitting the WLED4 changes
	  in a seperate patch.
	- Added WLED5 auto calibration support

Changes from V3:
        - Addressed comments from Daniel Thompson and Rob Herring
        - Seperated the WLED5 bindings from the driver changes
         - Squashed wled5 auto string detection and wled5 basic changes
          to avoid the NULL callback function pointer issue.

Changes from V4:
        - Addressed the yaml formatting comments from Rob Herring.
        - Addressed the comments from Daniel Thompson on the below patch
  	  "backlight: qcom-wled: Add callback functions"

Changes from V5:
        - This series depends on the below patch.
          https://lore.kernel.org/patchwork/patch/1226258/
        - Addressed yaml formatting comments from Rob Herring.
        - Removed the "wled_ovp_fault_status" callback as per Daniel Thomson
          suggestion from patch #2.
        - Addressed comments from Daniel Thomson on patch #4.

Kiran Gunda (3):
  backlight: qcom-wled: convert the wled bindings to .yaml format
  backlight: qcom-wled: Add callback functions
  backlight: qcom-wled: Add WLED5 bindings

Subbaraman Narayanamurthy (1):
  backlight: qcom-wled: Add support for WLED5 peripheral that is present
    on PM8150L PMICs

 .../bindings/leds/backlight/qcom-wled.txt          | 154 ------
 .../bindings/leds/backlight/qcom-wled.yaml         | 261 +++++++++
 drivers/video/backlight/qcom-wled.c                | 589 ++++++++++++++++++---
 3 files changed, 777 insertions(+), 227 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
 create mode 100644 Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml

On Thu, Apr 23, 2020 at 09:03:37PM +0530, Kiran Gunda wrote:
> From: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
> 
> PM8150L WLED supports the following:
>     - Two modulators and each sink can use any of the modulator
>     - Multiple CABC selection options from which one can be selected/enabled
>     - Multiple brightness width selection (12 bits to 15 bits)
> 
> Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>

Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>

On Thu, 23 Apr 2020 21:03:34 +0530, Kiran Gunda wrote:
> Convert the qcom-wled bindings from .txt to .yaml format.
> Also replace PM8941 to WLED3 and PMI8998 to WLED4.
> 
> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
> Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
> Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
> ---
>  .../bindings/leds/backlight/qcom-wled.txt          | 154 ---------------
>  .../bindings/leds/backlight/qcom-wled.yaml         | 208 +++++++++++++++++++++
>  2 files changed, 208 insertions(+), 154 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
>  create mode 100644 Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
> 

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

On Thu, 23 Apr 2020, Kiran Gunda wrote:

> From: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
> 
> PM8150L WLED supports the following:
>     - Two modulators and each sink can use any of the modulator
>     - Multiple CABC selection options from which one can be selected/enabled
>     - Multiple brightness width selection (12 bits to 15 bits)
> 
> Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
> ---
>  drivers/video/backlight/qcom-wled.c | 378 +++++++++++++++++++++++++++++++++++-
>  1 file changed, 376 insertions(+), 2 deletions(-)

Applied, thanks.