[PATCH] drm/i915/display: Check whether platform supports joiner

[Jani Nikula]

On Thu, 12 Sep 2024, Jani Nikula <jani.nikula at linux.intel.com> wrote:
> On Thu, 12 Sep 2024, Ankit Nautiyal <ankit.k.nautiyal at intel.com> wrote:
>> Add macros to check if platform supports bigjoiner/uncompressed joiner.
>> Replace the existing DISPLAY_VER checks with these.
>> Additionally use it before readout for joiner stuff, where its missing.
>
> Please split this to two, adding the macros and then adding the new
> place.

On second thoughts, it's small enough. Just merge after you get CI
results.

>
> BR,
> Jani.
>
>>
>> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
>> ---
>>  drivers/gpu/drm/i915/display/intel_display.c         | 9 ++++++---
>>  drivers/gpu/drm/i915/display/intel_display_debugfs.c | 2 +-
>>  drivers/gpu/drm/i915/display/intel_display_device.h  | 2 ++
>>  drivers/gpu/drm/i915/display/intel_dp.c              | 2 +-
>>  4 files changed, 10 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
>> index fdf244a32b24..d4a371edfcdd 100644
>> --- a/drivers/gpu/drm/i915/display/intel_display.c
>> +++ b/drivers/gpu/drm/i915/display/intel_display.c
>> @@ -1712,7 +1712,7 @@ static void hsw_crtc_enable(struct intel_atomic_state *state,
>>  
>>  		intel_dsc_enable(pipe_crtc_state);
>>  
>> -		if (DISPLAY_VER(dev_priv) >= 13)
>> +		if (HAS_UNCOMPRESSED_JOINER(dev_priv))
>>  			intel_uncompressed_joiner_enable(pipe_crtc_state);
>>  
>>  		intel_set_pipe_src_size(pipe_crtc_state);
>> @@ -3546,6 +3546,9 @@ static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
>>  	*primary_pipes = 0;
>>  	*secondary_pipes = 0;
>>  
>> +	if (!HAS_BIGJOINER(dev_priv))
>> +		return;
>> +
>>  	for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc,
>>  					 joiner_pipes(dev_priv)) {
>>  		enum intel_display_power_domain power_domain;
>> @@ -3565,7 +3568,7 @@ static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
>>  				*secondary_pipes |= BIT(pipe);
>>  		}
>>  
>> -		if (DISPLAY_VER(dev_priv) < 13)
>> +		if (!HAS_UNCOMPRESSED_JOINER(dev_priv))
>>  			continue;
>>  
>>  		power_domain = POWER_DOMAIN_PIPE(pipe);
>> @@ -7966,7 +7969,7 @@ static int max_dotclock(struct drm_i915_private *i915)
>>  	int max_dotclock = i915->display.cdclk.max_dotclk_freq;
>>  
>>  	/* icl+ might use joiner */
>> -	if (DISPLAY_VER(i915) >= 11)
>> +	if (HAS_BIGJOINER(i915))
>>  		max_dotclock *= 2;
>>  
>>  	return max_dotclock;
>> diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
>> index b75361e95e97..8caacdd624bd 100644
>> --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
>> +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
>> @@ -1550,7 +1550,7 @@ void intel_connector_debugfs_add(struct intel_connector *connector)
>>  				    connector, &i915_dsc_fractional_bpp_fops);
>>  	}
>>  
>> -	if (DISPLAY_VER(i915) >= 11 &&
>> +	if (HAS_BIGJOINER(i915) &&
>>  	    (connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
>>  	     connector_type == DRM_MODE_CONNECTOR_eDP)) {
>>  		debugfs_create_bool("i915_bigjoiner_force_enable", 0644, root,
>> diff --git a/drivers/gpu/drm/i915/display/intel_display_device.h b/drivers/gpu/drm/i915/display/intel_display_device.h
>> index dfb0c8bf5ca2..5306bbd13e59 100644
>> --- a/drivers/gpu/drm/i915/display/intel_display_device.h
>> +++ b/drivers/gpu/drm/i915/display/intel_display_device.h
>> @@ -118,6 +118,7 @@ enum intel_display_subplatform {
>>  
>>  #define HAS_4TILE(i915)			(IS_DG2(i915) || DISPLAY_VER(i915) >= 14)
>>  #define HAS_ASYNC_FLIPS(i915)		(DISPLAY_VER(i915) >= 5)
>> +#define HAS_BIGJOINER(i915)		(DISPLAY_VER(i915) >= 11)
>>  #define HAS_CDCLK_CRAWL(i915)		(DISPLAY_INFO(i915)->has_cdclk_crawl)
>>  #define HAS_CDCLK_SQUASH(i915)		(DISPLAY_INFO(i915)->has_cdclk_squash)
>>  #define HAS_CUR_FBC(i915)		(!HAS_GMCH(i915) && IS_DISPLAY_VER(i915, 7, 13))
>> @@ -152,6 +153,7 @@ enum intel_display_subplatform {
>>  #define HAS_SAGV(i915)			(DISPLAY_VER(i915) >= 9 && !IS_LP(i915))
>>  #define HAS_TRANSCODER(i915, trans)	((DISPLAY_RUNTIME_INFO(i915)->cpu_transcoder_mask & \
>>  					  BIT(trans)) != 0)
>> +#define HAS_UNCOMPRESSED_JOINER(i915)	(DISPLAY_VER(i915) >= 13)
>>  #define HAS_VRR(i915)			(DISPLAY_VER(i915) >= 11)
>>  #define HAS_AS_SDP(i915)		(DISPLAY_VER(i915) >= 13)
>>  #define HAS_CMRR(i915)			(DISPLAY_VER(i915) >= 20)
>> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
>> index cb0f6db5f8e7..c53eb8e165de 100644
>> --- a/drivers/gpu/drm/i915/display/intel_dp.c
>> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
>> @@ -2520,7 +2520,7 @@ bool intel_dp_joiner_needs_dsc(struct drm_i915_private *i915, bool use_joiner)
>>  	 * limitation. DG2 onwards pipe joiner can be enabled without
>>  	 * compression.
>>  	 */
>> -	return DISPLAY_VER(i915) < 13 && use_joiner;
>> +	return !HAS_UNCOMPRESSED_JOINER(i915) && use_joiner;
>>  }
>>  
>>  static int

-- 
Jani Nikula, Intel