Re: [PATCH 12/18] drm/vc4: hdmi: Replace CSC_CTL hardcoded value by defines

From: Thomas Zimmermann <tzimmermann@suse.de>
To: Maxime Ripard <maxime@cerno.tech>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Daniel Vetter <daniel.vetter@intel.com>,
	David Airlie <airlied@linux.ie>,
	Jernej Skrabec <jernej.skrabec@siol.net>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Jonas Karlman <jonas@kwiboo.se>
Cc: Tim Gover <tim.gover@raspberrypi.com>,
	Dave Stevenson <dave.stevenson@raspberrypi.com>,
	dri-devel@lists.freedesktop.org,
	bcm-kernel-feedback-list@broadcom.com,
	linux-rpi-kernel@lists.infradead.org,
	Phil Elwell <phil@raspberrypi.com>
Subject: Re: [PATCH 12/18] drm/vc4: hdmi: Replace CSC_CTL hardcoded value by defines
Date: Mon, 12 Apr 2021 12:28:48 +0200	[thread overview]
Message-ID: <f9dc15a6-0965-cdd0-8ded-1243678b7e30@suse.de> (raw)
In-Reply-To: <20210317154352.732095-13-maxime@cerno.tech>


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Am 17.03.21 um 16:43 schrieb Maxime Ripard:
> On BCM2711, the HDMI_CSC_CTL register value has been hardcoded to an
> opaque value. Let's replace it with properly defined values.
> 
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>

> ---
>   drivers/gpu/drm/vc4/vc4_hdmi.c | 5 ++---
>   drivers/gpu/drm/vc4/vc4_regs.h | 3 +++
>   2 files changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
> index 9ba555d24187..b0e0cb533944 100644
> --- a/drivers/gpu/drm/vc4/vc4_hdmi.c
> +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
> @@ -528,12 +528,11 @@ static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
>   static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
>   			       const struct drm_display_mode *mode)
>   {
> -	u32 csc_ctl;
> +	u32 csc_ctl = VC5_MT_CP_CSC_CTL_ENABLE | VC4_SET_FIELD(VC4_HD_CSC_CTL_MODE_CUSTOM,
> +							       VC5_MT_CP_CSC_CTL_MODE);
>   
>   	HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, 0x354021);
>   
> -	csc_ctl = 0x07;	/* RGB_CONVERT_MODE = custom matrix, || USE_RGB_TO_YCBCR */
> -
>   	if (vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) {
>   		/* CEA VICs other than #1 requre limited range RGB
>   		 * output unless overridden by an AVI infoframe.
> diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h
> index be2c32a519b3..9d7c034c8b4f 100644
> --- a/drivers/gpu/drm/vc4/vc4_regs.h
> +++ b/drivers/gpu/drm/vc4/vc4_regs.h
> @@ -744,6 +744,9 @@
>   # define VC4_HD_CSC_CTL_RGB2YCC			BIT(1)
>   # define VC4_HD_CSC_CTL_ENABLE			BIT(0)
>   
> +# define VC5_MT_CP_CSC_CTL_ENABLE		BIT(2)
> +# define VC5_MT_CP_CSC_CTL_MODE_MASK		VC4_MASK(1, 0)
> +
>   # define VC4_DVP_HT_CLOCK_STOP_PIXEL		BIT(1)
>   
>   /* HVS display list information. */
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer


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