Re: [PATCH v3 04/23] drm/i915/display: Move psr related module parameters under display

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On Tue, 2023-10-24 at 13:32 +0300, Jouni Högander wrote:
> Move psr related module parameters under display. Also fix error in
> enable_psr2_sel_fetch module parameter descrtiption. It was saying disabled
> by default while it's vice versa. Also psr_safest_params was missing
> default value in description. This is now added.
> 
> v2:
>   - Fix enable_psr2_sel_fetch description.
>   - Add default value into psr_safest_params description.
> 
> Cc: Luca Coelho <luca@xxxxxxxxx>
> 
> Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx>
> ---
>  .../gpu/drm/i915/display/intel_display_params.c  | 16 ++++++++++++++++
>  .../gpu/drm/i915/display/intel_display_params.h  |  5 +++++
>  drivers/gpu/drm/i915/display/intel_psr.c         | 14 +++++++-------
>  drivers/gpu/drm/i915/i915_params.c               | 15 ---------------
>  drivers/gpu/drm/i915/i915_params.h               |  3 ---
>  5 files changed, 28 insertions(+), 25 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_params.c b/drivers/gpu/drm/i915/display/intel_display_params.c
> index 330613cd64db..0e86d0d10bfa 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_params.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_params.c
> @@ -31,6 +31,22 @@ intel_display_param_named_unsafe(enable_fbc, int, 0400,
>  	"Enable frame buffer compression for power savings "
>  	"(default: -1 (use per-chip default))");
>  
> +intel_display_param_named_unsafe(enable_psr, int, 0400,
> +	"Enable PSR "
> +	"(0=disabled, 1=enable up to PSR1, 2=enable up to PSR2) "
> +	"Default: -1 (use per-chip default)");
> +
> +intel_display_param_named(psr_safest_params, bool, 0400,
> +	"Replace PSR VBT parameters by the safest and not optimal ones. This "
> +	"is helpful to detect if PSR issues are related to bad values set in "
> +	" VBT. (0=use VBT parameters, 1=use safest parameters)"
> +	"Default: 0");
> +
> +intel_display_param_named_unsafe(enable_psr2_sel_fetch, bool, 0400,
> +	"Enable PSR2 selective fetch "
> +	"(0=disabled, 1=enabled) "
> +	"Default: 1");
> +
>  __maybe_unused
>  static void _param_print_bool(struct drm_printer *p, const char *driver_name,
>  			      const char *name, bool val)
> diff --git a/drivers/gpu/drm/i915/display/intel_display_params.h b/drivers/gpu/drm/i915/display/intel_display_params.h
> index 198b03da8055..45a4d38d13e7 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_params.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_params.h
> @@ -6,6 +6,8 @@
>  #ifndef _INTEL_DISPLAY_PARAMS_H_
>  #define _INTEL_DISPLAY_PARAMS_H_
>  
> +#include <linux/types.h>
> +
>  struct drm_printer;
>  struct drm_i915_private;
>  
> @@ -23,6 +25,9 @@ struct drm_i915_private;
>   */
>  #define INTEL_DISPLAY_PARAMS_FOR_EACH(param) \
>  	param(int, enable_fbc, -1, 0600) \
> +	param(int, enable_psr, -1, 0600) \
> +	param(bool, psr_safest_params, false, 0400) \
> +	param(bool, enable_psr2_sel_fetch, true, 0400) \
>  
>  #define MEMBER(T, member, ...) T member;
>  struct intel_display_params {
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
> index 4f1f31fc9529..ecd24a0b86cb 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -179,9 +179,9 @@ static bool psr_global_enabled(struct intel_dp *intel_dp)
>  
>  	switch (intel_dp->psr.debug & I915_PSR_DEBUG_MODE_MASK) {
>  	case I915_PSR_DEBUG_DEFAULT:
> -		if (i915->params.enable_psr == -1)
> +		if (i915->display.params.enable_psr == -1)
>  			return connector->panel.vbt.psr.enable;
> -		return i915->params.enable_psr;
> +		return i915->display.params.enable_psr;
>  	case I915_PSR_DEBUG_DISABLE:
>  		return false;
>  	default:
> @@ -198,7 +198,7 @@ static bool psr2_global_enabled(struct intel_dp *intel_dp)
>  	case I915_PSR_DEBUG_FORCE_PSR1:
>  		return false;
>  	default:
> -		if (i915->params.enable_psr == 1)
> +		if (i915->display.params.enable_psr == 1)
>  			return false;
>  		return true;
>  	}
> @@ -606,7 +606,7 @@ static u32 intel_psr1_get_tp_time(struct intel_dp *intel_dp)
>  	if (DISPLAY_VER(dev_priv) >= 11)
>  		val |= EDP_PSR_TP4_TIME_0us;
>  
> -	if (dev_priv->params.psr_safest_params) {
> +	if (dev_priv->display.params.psr_safest_params) {
>  		val |= EDP_PSR_TP1_TIME_2500us;
>  		val |= EDP_PSR_TP2_TP3_TIME_2500us;
>  		goto check_tp3_sel;
> @@ -700,7 +700,7 @@ static u32 intel_psr2_get_tp_time(struct intel_dp *intel_dp)
>  	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
>  	u32 val = 0;
>  
> -	if (dev_priv->params.psr_safest_params)
> +	if (dev_priv->display.params.psr_safest_params)
>  		return EDP_PSR2_TP2_TIME_2500us;
>  
>  	if (connector->panel.vbt.psr.psr2_tp2_tp3_wakeup_time_us >= 0 &&
> @@ -943,7 +943,7 @@ static bool intel_psr2_sel_fetch_config_valid(struct intel_dp *intel_dp,
>  {
>  	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
>  
> -	if (!dev_priv->params.enable_psr2_sel_fetch &&
> +	if (!dev_priv->display.params.enable_psr2_sel_fetch &&
>  	    intel_dp->psr.debug != I915_PSR_DEBUG_ENABLE_SEL_FETCH) {
>  		drm_dbg_kms(&dev_priv->drm,
>  			    "PSR2 sel fetch not enabled, disabled by parameter\n");
> @@ -1056,7 +1056,7 @@ static bool _compute_psr2_wake_times(struct intel_dp *intel_dp,
>  	    fast_wake_lines > max_wake_lines)
>  		return false;
>  
> -	if (i915->params.psr_safest_params)
> +	if (i915->display.params.psr_safest_params)
>  		io_wake_lines = fast_wake_lines = max_wake_lines;
>  
>  	/* According to Bspec lower limit should be set as 7 lines. */
> diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
> index 42700b854b79..c65e3314ae48 100644
> --- a/drivers/gpu/drm/i915/i915_params.c
> +++ b/drivers/gpu/drm/i915/i915_params.c
> @@ -102,21 +102,6 @@ i915_param_named_unsafe(enable_hangcheck, bool, 0400,
>  	"WARNING: Disabling this can cause system wide hangs. "
>  	"(default: true)");
>  
> -i915_param_named_unsafe(enable_psr, int, 0400,
> -	"Enable PSR "
> -	"(0=disabled, 1=enable up to PSR1, 2=enable up to PSR2) "
> -	"Default: -1 (use per-chip default)");
> -
> -i915_param_named(psr_safest_params, bool, 0400,
> -	"Replace PSR VBT parameters by the safest and not optimal ones. This "
> -	"is helpful to detect if PSR issues are related to bad values set in "
> -	" VBT. (0=use VBT parameters, 1=use safest parameters)");
> -
> -i915_param_named_unsafe(enable_psr2_sel_fetch, bool, 0400,
> -	"Enable PSR2 selective fetch "
> -	"(0=disabled, 1=enabled) "
> -	"Default: 0");
> -
>  i915_param_named_unsafe(enable_sagv, bool, 0600,
>  	"Enable system agent voltage/frequency scaling (SAGV) (default: true)");
>  
> diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
> index e674de29f92c..47a05c4a8e89 100644
> --- a/drivers/gpu/drm/i915/i915_params.h
> +++ b/drivers/gpu/drm/i915/i915_params.h
> @@ -52,10 +52,7 @@ struct drm_printer;
>  	param(int, panel_use_ssc, -1, 0600) \
>  	param(int, vbt_sdvo_panel_type, -1, 0400) \
>  	param(int, enable_dc, -1, 0400) \
> -	param(int, enable_psr, -1, 0600) \
>  	param(bool, enable_dpt, true, 0400) \
> -	param(bool, psr_safest_params, false, 0400) \
> -	param(bool, enable_psr2_sel_fetch, true, 0400) \
>  	param(bool, enable_sagv, true, 0600) \
>  	param(int, disable_power_well, -1, 0400) \
>  	param(int, enable_ips, 1, 0600) \

Reviewed-by: Luca Coelho <luciano.coelho@xxxxxxxxx>

--
Cheers,
Luca.




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