linux-kernel - Re: [PATCH v3 10/15] drm/tests: hdmi: Replace open coded EDID setup

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Message-ID: <e54840a9-d699-4ffd-b4a0-77dcf344c233@collabora.com>
Date: Thu, 10 Apr 2025 13:27:21 +0300
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: Maxime Ripard <mripard@...nel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>,
 Dave Stevenson <dave.stevenson@...pberrypi.com>,
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, kernel@...labora.com,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 10/15] drm/tests: hdmi: Replace open coded EDID setup

On 4/9/25 6:15 PM, Maxime Ripard wrote:
> On Wed, Mar 26, 2025 at 12:19:59PM +0200, Cristian Ciocaltea wrote:
>> Make use of the recently introduced macros to reduce boilerplate code
>> around EDID setup. This also helps dropping the redundant calls to
>> set_connector_edid().
>>
>> No functional changes intended.
>>
>> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
>> ---
>>  drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 220 ++++++++-------------
>>  1 file changed, 78 insertions(+), 142 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
>> index 284bd9b1418a454d05c4a38263519eb8ae450090..7b2aaee5009ce58e6edf2649e2182c43ba834523 100644
>> --- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
>> +++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
>> @@ -751,19 +751,15 @@ static void drm_test_check_output_bpc_crtc_mode_changed(struct kunit *test)
>>  	struct drm_crtc *crtc;
>>  	int ret;
>>  
>> -	priv = drm_kunit_helper_connector_hdmi_init(test,
>> -						    BIT(HDMI_COLORSPACE_RGB),
>> -						    10);
>> +	priv = drm_kunit_helper_connector_hdmi_init_with_edid(test,
>> +				BIT(HDMI_COLORSPACE_RGB),
>> +				10,
>> +				test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz);
>>  	KUNIT_ASSERT_NOT_NULL(test, priv);
>>  
>>  	drm = &priv->drm;
>>  	crtc = priv->crtc;
>>  	conn = &priv->connector;
>> -	ret = set_connector_edid(test, conn,
>> -				 test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz,
>> -				 ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz));
>> -	KUNIT_ASSERT_GT(test, ret, 0);
>> -
> 
> Yeah, ok, nvm what I said on the previous patch, it's needed.
> 
>>  	preferred = find_preferred_mode(conn);
>>  	KUNIT_ASSERT_NOT_NULL(test, preferred);
>>  
>> @@ -830,19 +826,15 @@ static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
>>  	struct drm_crtc *crtc;
>>  	int ret;
>>  
>> -	priv = drm_kunit_helper_connector_hdmi_init(test,
>> -						    BIT(HDMI_COLORSPACE_RGB),
>> -						    10);
>> +	priv = drm_kunit_helper_connector_hdmi_init_with_edid(test,
>> +				BIT(HDMI_COLORSPACE_RGB),
>> +				10,
>> +				test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz);
> 
> Alignment is off.

Yeah, that's a compromise to get rid of a bunch of checkpatch complaints:

  WARNING: line length of ... exceeds 100 columns

So we ended up with the following instead:

  CHECK: Alignment should match open parenthesis

But at least it's not a warning anymore.

Alternatively, we could maybe come up with a (very) short name for
drm_kunit_helper_connector_hdmi_init_with_edid(), though I'm not what
would that be :-(