linux-kernel - Re: [PATCH v8 0/7] Add support for XLCDC to sam9x7 SoC family.

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Message-ID: <20240222163526.GA2576040@ravnborg.org>
Date: Thu, 22 Feb 2024 17:35:26 +0100
From: Sam Ravnborg <sam@...nborg.org>
To: Manikandan Muralidharan <manikandan.m@...rochip.com>
Cc: bbrezillon@...nel.org, maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com,
	daniel@...ll.ch, nicolas.ferre@...rochip.com,
	alexandre.belloni@...tlin.com, claudiu.beznea@...on.dev,
	lee@...nel.org, dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Hari.PrasathGE@...rochip.com,
	Balamanikandan.Gunasundar@...rochip.com,
	Durai.ManickamKR@...rochip.com, Nayabbasha.Sayed@...rochip.com,
	Dharma.B@...rochip.com, Varshini.Rajendran@...rochip.com,
	Balakrishnan.S@...rochip.com, Charan.Pedumuru@...rochip.com
Subject: Re: [PATCH v8 0/7] Add support for XLCDC to sam9x7 SoC family.

On Wed, Feb 21, 2024 at 11:05:24AM +0530, Manikandan Muralidharan wrote:
> This patch series aims to add support for XLCDC IP of sam9x7 SoC family
> to the DRM subsystem.XLCDC IP has additional registers and new
> configuration bits compared to the existing register set of HLCDC IP.
> The new compatible string "microchip,sam9x75-xlcdc" is defined for sam9x75
> variant of the sam9x7 SoC family.The is_xlcdc flag under driver data and
> IP specific driver ops helps to differentiate the XLCDC and existing HLCDC
> code within the same driver.
> 
> changes in v8:
> * Re-arrange the patch set to prepare and update the current HLCDC
> code base with the new LCDC IP based driver ops and then add support
> for XLCDC code changes.
> * Fix Cosmetic issues.
> 
> changes in v7:
> * LCDC IP driver ops functions are declared static and its 
> declaration are removed.
> 
> changes in v6:
> * Fixed Cosmetic defects.
> * Added comments for readability.
> 
> changes in v5:
> * return value of regmap_read_poll_timeout is checked in failure
> case.
> * HLCDC and XLCDC specific driver functions are now invoked
> using its IP specific driver ops w/o the need of checking is_xlcdc flag.
> * Removed empty spaces and blank lines.
> 
> changes in v4:
> * fixed kernel warnings reported by kernel test robot.
> 
> changes in v3:
> * Removed de-referencing the value of is_xlcdc flag multiple times in
> a single function.
> * Removed cpu_relax() call when using regmap_read_poll_timeout.
> * Updated xfactor and yfactor equations using shift operators
> * Defined CSC co-efficients in an array for code readability.
> 
> changes in v2:
> * Change the driver compatible name from "microchip,sam9x7-xlcdc" to
> "microchip,sam9x75-xlcdc".
> * Move is_xlcdc flag to driver data.
> * Remove unsed Macro definitions.
> * Add co-developed-bys tags
> * Replace regmap_read() with regmap_read_poll_timeout() call
> * Split code into two helpers for code readablitity.
> ---
> 
> Durai Manickam KR (1):
>   drm: atmel-hlcdc: Define XLCDC specific registers
> 
> Manikandan Muralidharan (6):
>   drm: atmel-hlcdc: add driver ops to differentiate HLCDC and XLCDC IP
>   drm: atmel_hlcdc: Add support for XLCDC using IP specific driver ops
>   drm: atmel-hlcdc: add DPI mode support for XLCDC
>   drm: atmel-hlcdc: add vertical and horizontal scaling support for
>     XLCDC
>   drm: atmel-hlcdc: add support for DSI output formats
>   drm: atmel-hlcdc: add LCD controller layer definition for sam9x75

Hi Manikandan

thanks for your paitent follow-up on this patch set.
Everything looks good and all patches are:
Acked-by: Sam Ravnborg <sam@...nborg.org>

We are at v8 now and if there are additional comments we can handle them
in-tree.
I have asked Thomas Zimmermann to apply the patches to drm-misc as I
have lost my push infrastructure atm.

	Sam