Re: [Intel-gfx] [PATCH v3 1/2] drm/i915: Add a wrapper for frequency debugfs

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On Wed, 05 Oct 2022, Vinay Belgaumkar <vinay.belgaumkar@xxxxxxxxx> wrote:
> Move it to the RPS source file.
>
> v2: Separate out code movement and functional changes (Jani)
>
> Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@xxxxxxxxx>

Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>

> ---
>  drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c | 157 +----------------
>  drivers/gpu/drm/i915/gt/intel_rps.c           | 163 ++++++++++++++++++
>  drivers/gpu/drm/i915/gt/intel_rps.h           |   3 +
>  3 files changed, 167 insertions(+), 156 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
> index 10f680dbd7b6..40d0a3be42ac 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
> @@ -344,162 +344,7 @@ void intel_gt_pm_frequency_dump(struct intel_gt *gt, struct drm_printer *p)
>  		drm_printf(p, "efficient (RPe) frequency: %d MHz\n",
>  			   intel_gpu_freq(rps, rps->efficient_freq));
>  	} else if (GRAPHICS_VER(i915) >= 6) {
> -		u32 rp_state_limits;
> -		u32 gt_perf_status;
> -		struct intel_rps_freq_caps caps;
> -		u32 rpmodectl, rpinclimit, rpdeclimit;
> -		u32 rpstat, cagf, reqf;
> -		u32 rpcurupei, rpcurup, rpprevup;
> -		u32 rpcurdownei, rpcurdown, rpprevdown;
> -		u32 rpupei, rpupt, rpdownei, rpdownt;
> -		u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask;
> -
> -		rp_state_limits = intel_uncore_read(uncore, GEN6_RP_STATE_LIMITS);
> -		gen6_rps_get_freq_caps(rps, &caps);
> -		if (IS_GEN9_LP(i915))
> -			gt_perf_status = intel_uncore_read(uncore, BXT_GT_PERF_STATUS);
> -		else
> -			gt_perf_status = intel_uncore_read(uncore, GEN6_GT_PERF_STATUS);
> -
> -		/* RPSTAT1 is in the GT power well */
> -		intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
> -
> -		reqf = intel_uncore_read(uncore, GEN6_RPNSWREQ);
> -		if (GRAPHICS_VER(i915) >= 9) {
> -			reqf >>= 23;
> -		} else {
> -			reqf &= ~GEN6_TURBO_DISABLE;
> -			if (IS_HASWELL(i915) || IS_BROADWELL(i915))
> -				reqf >>= 24;
> -			else
> -				reqf >>= 25;
> -		}
> -		reqf = intel_gpu_freq(rps, reqf);
> -
> -		rpmodectl = intel_uncore_read(uncore, GEN6_RP_CONTROL);
> -		rpinclimit = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD);
> -		rpdeclimit = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD);
> -
> -		rpstat = intel_uncore_read(uncore, GEN6_RPSTAT1);
> -		rpcurupei = intel_uncore_read(uncore, GEN6_RP_CUR_UP_EI) & GEN6_CURICONT_MASK;
> -		rpcurup = intel_uncore_read(uncore, GEN6_RP_CUR_UP) & GEN6_CURBSYTAVG_MASK;
> -		rpprevup = intel_uncore_read(uncore, GEN6_RP_PREV_UP) & GEN6_CURBSYTAVG_MASK;
> -		rpcurdownei = intel_uncore_read(uncore, GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK;
> -		rpcurdown = intel_uncore_read(uncore, GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK;
> -		rpprevdown = intel_uncore_read(uncore, GEN6_RP_PREV_DOWN) & GEN6_CURBSYTAVG_MASK;
> -
> -		rpupei = intel_uncore_read(uncore, GEN6_RP_UP_EI);
> -		rpupt = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD);
> -
> -		rpdownei = intel_uncore_read(uncore, GEN6_RP_DOWN_EI);
> -		rpdownt = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD);
> -
> -		cagf = intel_rps_read_actual_frequency(rps);
> -
> -		intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
> -
> -		if (GRAPHICS_VER(i915) >= 11) {
> -			pm_ier = intel_uncore_read(uncore, GEN11_GPM_WGBOXPERF_INTR_ENABLE);
> -			pm_imr = intel_uncore_read(uncore, GEN11_GPM_WGBOXPERF_INTR_MASK);
> -			/*
> -			 * The equivalent to the PM ISR & IIR cannot be read
> -			 * without affecting the current state of the system
> -			 */
> -			pm_isr = 0;
> -			pm_iir = 0;
> -		} else if (GRAPHICS_VER(i915) >= 8) {
> -			pm_ier = intel_uncore_read(uncore, GEN8_GT_IER(2));
> -			pm_imr = intel_uncore_read(uncore, GEN8_GT_IMR(2));
> -			pm_isr = intel_uncore_read(uncore, GEN8_GT_ISR(2));
> -			pm_iir = intel_uncore_read(uncore, GEN8_GT_IIR(2));
> -		} else {
> -			pm_ier = intel_uncore_read(uncore, GEN6_PMIER);
> -			pm_imr = intel_uncore_read(uncore, GEN6_PMIMR);
> -			pm_isr = intel_uncore_read(uncore, GEN6_PMISR);
> -			pm_iir = intel_uncore_read(uncore, GEN6_PMIIR);
> -		}
> -		pm_mask = intel_uncore_read(uncore, GEN6_PMINTRMSK);
> -
> -		drm_printf(p, "Video Turbo Mode: %s\n",
> -			   str_yes_no(rpmodectl & GEN6_RP_MEDIA_TURBO));
> -		drm_printf(p, "HW control enabled: %s\n",
> -			   str_yes_no(rpmodectl & GEN6_RP_ENABLE));
> -		drm_printf(p, "SW control enabled: %s\n",
> -			   str_yes_no((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) == GEN6_RP_MEDIA_SW_MODE));
> -
> -		drm_printf(p, "PM IER=0x%08x IMR=0x%08x, MASK=0x%08x\n",
> -			   pm_ier, pm_imr, pm_mask);
> -		if (GRAPHICS_VER(i915) <= 10)
> -			drm_printf(p, "PM ISR=0x%08x IIR=0x%08x\n",
> -				   pm_isr, pm_iir);
> -		drm_printf(p, "pm_intrmsk_mbz: 0x%08x\n",
> -			   rps->pm_intrmsk_mbz);
> -		drm_printf(p, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
> -		drm_printf(p, "Render p-state ratio: %d\n",
> -			   (gt_perf_status & (GRAPHICS_VER(i915) >= 9 ? 0x1ff00 : 0xff00)) >> 8);
> -		drm_printf(p, "Render p-state VID: %d\n",
> -			   gt_perf_status & 0xff);
> -		drm_printf(p, "Render p-state limit: %d\n",
> -			   rp_state_limits & 0xff);
> -		drm_printf(p, "RPSTAT1: 0x%08x\n", rpstat);
> -		drm_printf(p, "RPMODECTL: 0x%08x\n", rpmodectl);
> -		drm_printf(p, "RPINCLIMIT: 0x%08x\n", rpinclimit);
> -		drm_printf(p, "RPDECLIMIT: 0x%08x\n", rpdeclimit);
> -		drm_printf(p, "RPNSWREQ: %dMHz\n", reqf);
> -		drm_printf(p, "CAGF: %dMHz\n", cagf);
> -		drm_printf(p, "RP CUR UP EI: %d (%lldns)\n",
> -			   rpcurupei,
> -			   intel_gt_pm_interval_to_ns(gt, rpcurupei));
> -		drm_printf(p, "RP CUR UP: %d (%lldns)\n",
> -			   rpcurup, intel_gt_pm_interval_to_ns(gt, rpcurup));
> -		drm_printf(p, "RP PREV UP: %d (%lldns)\n",
> -			   rpprevup, intel_gt_pm_interval_to_ns(gt, rpprevup));
> -		drm_printf(p, "Up threshold: %d%%\n",
> -			   rps->power.up_threshold);
> -		drm_printf(p, "RP UP EI: %d (%lldns)\n",
> -			   rpupei, intel_gt_pm_interval_to_ns(gt, rpupei));
> -		drm_printf(p, "RP UP THRESHOLD: %d (%lldns)\n",
> -			   rpupt, intel_gt_pm_interval_to_ns(gt, rpupt));
> -
> -		drm_printf(p, "RP CUR DOWN EI: %d (%lldns)\n",
> -			   rpcurdownei,
> -			   intel_gt_pm_interval_to_ns(gt, rpcurdownei));
> -		drm_printf(p, "RP CUR DOWN: %d (%lldns)\n",
> -			   rpcurdown,
> -			   intel_gt_pm_interval_to_ns(gt, rpcurdown));
> -		drm_printf(p, "RP PREV DOWN: %d (%lldns)\n",
> -			   rpprevdown,
> -			   intel_gt_pm_interval_to_ns(gt, rpprevdown));
> -		drm_printf(p, "Down threshold: %d%%\n",
> -			   rps->power.down_threshold);
> -		drm_printf(p, "RP DOWN EI: %d (%lldns)\n",
> -			   rpdownei, intel_gt_pm_interval_to_ns(gt, rpdownei));
> -		drm_printf(p, "RP DOWN THRESHOLD: %d (%lldns)\n",
> -			   rpdownt, intel_gt_pm_interval_to_ns(gt, rpdownt));
> -
> -		drm_printf(p, "Lowest (RPN) frequency: %dMHz\n",
> -			   intel_gpu_freq(rps, caps.min_freq));
> -		drm_printf(p, "Nominal (RP1) frequency: %dMHz\n",
> -			   intel_gpu_freq(rps, caps.rp1_freq));
> -		drm_printf(p, "Max non-overclocked (RP0) frequency: %dMHz\n",
> -			   intel_gpu_freq(rps, caps.rp0_freq));
> -		drm_printf(p, "Max overclocked frequency: %dMHz\n",
> -			   intel_gpu_freq(rps, rps->max_freq));
> -
> -		drm_printf(p, "Current freq: %d MHz\n",
> -			   intel_gpu_freq(rps, rps->cur_freq));
> -		drm_printf(p, "Actual freq: %d MHz\n", cagf);
> -		drm_printf(p, "Idle freq: %d MHz\n",
> -			   intel_gpu_freq(rps, rps->idle_freq));
> -		drm_printf(p, "Min freq: %d MHz\n",
> -			   intel_gpu_freq(rps, rps->min_freq));
> -		drm_printf(p, "Boost freq: %d MHz\n",
> -			   intel_gpu_freq(rps, rps->boost_freq));
> -		drm_printf(p, "Max freq: %d MHz\n",
> -			   intel_gpu_freq(rps, rps->max_freq));
> -		drm_printf(p,
> -			   "efficient (RPe) frequency: %d MHz\n",
> -			   intel_gpu_freq(rps, rps->efficient_freq));
> +		gen6_rps_frequency_dump(rps, p);
>  	} else {
>  		drm_puts(p, "no P-state info available\n");
>  	}
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
> index 17b40b625e31..737db780db00 100644
> --- a/drivers/gpu/drm/i915/gt/intel_rps.c
> +++ b/drivers/gpu/drm/i915/gt/intel_rps.c
> @@ -2219,6 +2219,169 @@ u32 intel_rps_get_rpn_frequency(struct intel_rps *rps)
>  		return intel_gpu_freq(rps, rps->min_freq);
>  }
>  
> +void gen6_rps_frequency_dump(struct intel_rps *rps, struct drm_printer *p)
> +{
> +	struct intel_gt *gt = rps_to_gt(rps);
> +	struct drm_i915_private *i915 = gt->i915;
> +	struct intel_uncore *uncore = gt->uncore;
> +	struct intel_rps_freq_caps caps;
> +	u32 rp_state_limits;
> +	u32 gt_perf_status;
> +	u32 rpmodectl, rpinclimit, rpdeclimit;
> +	u32 rpstat, cagf, reqf;
> +	u32 rpcurupei, rpcurup, rpprevup;
> +	u32 rpcurdownei, rpcurdown, rpprevdown;
> +	u32 rpupei, rpupt, rpdownei, rpdownt;
> +	u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask;
> +
> +	rp_state_limits = intel_uncore_read(uncore, GEN6_RP_STATE_LIMITS);
> +	gen6_rps_get_freq_caps(rps, &caps);
> +	if (IS_GEN9_LP(i915))
> +		gt_perf_status = intel_uncore_read(uncore, BXT_GT_PERF_STATUS);
> +	else
> +		gt_perf_status = intel_uncore_read(uncore, GEN6_GT_PERF_STATUS);
> +
> +	/* RPSTAT1 is in the GT power well */
> +	intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
> +
> +	reqf = intel_uncore_read(uncore, GEN6_RPNSWREQ);
> +	if (GRAPHICS_VER(i915) >= 9) {
> +		reqf >>= 23;
> +	} else {
> +		reqf &= ~GEN6_TURBO_DISABLE;
> +		if (IS_HASWELL(i915) || IS_BROADWELL(i915))
> +			reqf >>= 24;
> +		else
> +			reqf >>= 25;
> +	}
> +	reqf = intel_gpu_freq(rps, reqf);
> +
> +	rpmodectl = intel_uncore_read(uncore, GEN6_RP_CONTROL);
> +	rpinclimit = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD);
> +	rpdeclimit = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD);
> +
> +	rpstat = intel_uncore_read(uncore, GEN6_RPSTAT1);
> +	rpcurupei = intel_uncore_read(uncore, GEN6_RP_CUR_UP_EI) & GEN6_CURICONT_MASK;
> +	rpcurup = intel_uncore_read(uncore, GEN6_RP_CUR_UP) & GEN6_CURBSYTAVG_MASK;
> +	rpprevup = intel_uncore_read(uncore, GEN6_RP_PREV_UP) & GEN6_CURBSYTAVG_MASK;
> +	rpcurdownei = intel_uncore_read(uncore, GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK;
> +	rpcurdown = intel_uncore_read(uncore, GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK;
> +	rpprevdown = intel_uncore_read(uncore, GEN6_RP_PREV_DOWN) & GEN6_CURBSYTAVG_MASK;
> +
> +	rpupei = intel_uncore_read(uncore, GEN6_RP_UP_EI);
> +	rpupt = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD);
> +
> +	rpdownei = intel_uncore_read(uncore, GEN6_RP_DOWN_EI);
> +	rpdownt = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD);
> +
> +	cagf = intel_rps_read_actual_frequency(rps);
> +
> +	intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
> +
> +	if (GRAPHICS_VER(i915) >= 11) {
> +		pm_ier = intel_uncore_read(uncore, GEN11_GPM_WGBOXPERF_INTR_ENABLE);
> +		pm_imr = intel_uncore_read(uncore, GEN11_GPM_WGBOXPERF_INTR_MASK);
> +		/*
> +		 * The equivalent to the PM ISR & IIR cannot be read
> +		 * without affecting the current state of the system
> +		 */
> +		pm_isr = 0;
> +		pm_iir = 0;
> +	} else if (GRAPHICS_VER(i915) >= 8) {
> +		pm_ier = intel_uncore_read(uncore, GEN8_GT_IER(2));
> +		pm_imr = intel_uncore_read(uncore, GEN8_GT_IMR(2));
> +		pm_isr = intel_uncore_read(uncore, GEN8_GT_ISR(2));
> +		pm_iir = intel_uncore_read(uncore, GEN8_GT_IIR(2));
> +	} else {
> +		pm_ier = intel_uncore_read(uncore, GEN6_PMIER);
> +		pm_imr = intel_uncore_read(uncore, GEN6_PMIMR);
> +		pm_isr = intel_uncore_read(uncore, GEN6_PMISR);
> +		pm_iir = intel_uncore_read(uncore, GEN6_PMIIR);
> +	}
> +	pm_mask = intel_uncore_read(uncore, GEN6_PMINTRMSK);
> +
> +	drm_printf(p, "Video Turbo Mode: %s\n",
> +		   str_yes_no(rpmodectl & GEN6_RP_MEDIA_TURBO));
> +	drm_printf(p, "HW control enabled: %s\n",
> +		   str_yes_no(rpmodectl & GEN6_RP_ENABLE));
> +	drm_printf(p, "SW control enabled: %s\n",
> +		   str_yes_no((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) == GEN6_RP_MEDIA_SW_MODE));
> +
> +	drm_printf(p, "PM IER=0x%08x IMR=0x%08x, MASK=0x%08x\n",
> +		   pm_ier, pm_imr, pm_mask);
> +	if (GRAPHICS_VER(i915) <= 10)
> +		drm_printf(p, "PM ISR=0x%08x IIR=0x%08x\n",
> +			   pm_isr, pm_iir);
> +	drm_printf(p, "pm_intrmsk_mbz: 0x%08x\n",
> +		   rps->pm_intrmsk_mbz);
> +	drm_printf(p, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
> +	drm_printf(p, "Render p-state ratio: %d\n",
> +		   (gt_perf_status & (GRAPHICS_VER(i915) >= 9 ? 0x1ff00 : 0xff00)) >> 8);
> +	drm_printf(p, "Render p-state VID: %d\n",
> +		   gt_perf_status & 0xff);
> +	drm_printf(p, "Render p-state limit: %d\n",
> +		   rp_state_limits & 0xff);
> +	drm_printf(p, "RPSTAT1: 0x%08x\n", rpstat);
> +	drm_printf(p, "RPMODECTL: 0x%08x\n", rpmodectl);
> +	drm_printf(p, "RPINCLIMIT: 0x%08x\n", rpinclimit);
> +	drm_printf(p, "RPDECLIMIT: 0x%08x\n", rpdeclimit);
> +	drm_printf(p, "RPNSWREQ: %dMHz\n", reqf);
> +	drm_printf(p, "CAGF: %dMHz\n", cagf);
> +	drm_printf(p, "RP CUR UP EI: %d (%lldns)\n",
> +		   rpcurupei,
> +		   intel_gt_pm_interval_to_ns(gt, rpcurupei));
> +	drm_printf(p, "RP CUR UP: %d (%lldns)\n",
> +		   rpcurup, intel_gt_pm_interval_to_ns(gt, rpcurup));
> +	drm_printf(p, "RP PREV UP: %d (%lldns)\n",
> +		   rpprevup, intel_gt_pm_interval_to_ns(gt, rpprevup));
> +	drm_printf(p, "Up threshold: %d%%\n",
> +		   rps->power.up_threshold);
> +	drm_printf(p, "RP UP EI: %d (%lldns)\n",
> +		   rpupei, intel_gt_pm_interval_to_ns(gt, rpupei));
> +	drm_printf(p, "RP UP THRESHOLD: %d (%lldns)\n",
> +		   rpupt, intel_gt_pm_interval_to_ns(gt, rpupt));
> +
> +	drm_printf(p, "RP CUR DOWN EI: %d (%lldns)\n",
> +		   rpcurdownei,
> +		   intel_gt_pm_interval_to_ns(gt, rpcurdownei));
> +	drm_printf(p, "RP CUR DOWN: %d (%lldns)\n",
> +		   rpcurdown,
> +		   intel_gt_pm_interval_to_ns(gt, rpcurdown));
> +	drm_printf(p, "RP PREV DOWN: %d (%lldns)\n",
> +		   rpprevdown,
> +		   intel_gt_pm_interval_to_ns(gt, rpprevdown));
> +	drm_printf(p, "Down threshold: %d%%\n",
> +		   rps->power.down_threshold);
> +	drm_printf(p, "RP DOWN EI: %d (%lldns)\n",
> +		   rpdownei, intel_gt_pm_interval_to_ns(gt, rpdownei));
> +	drm_printf(p, "RP DOWN THRESHOLD: %d (%lldns)\n",
> +		   rpdownt, intel_gt_pm_interval_to_ns(gt, rpdownt));
> +
> +	drm_printf(p, "Lowest (RPN) frequency: %dMHz\n",
> +		   intel_gpu_freq(rps, caps.min_freq));
> +	drm_printf(p, "Nominal (RP1) frequency: %dMHz\n",
> +		   intel_gpu_freq(rps, caps.rp1_freq));
> +	drm_printf(p, "Max non-overclocked (RP0) frequency: %dMHz\n",
> +		   intel_gpu_freq(rps, caps.rp0_freq));
> +	drm_printf(p, "Max overclocked frequency: %dMHz\n",
> +		   intel_gpu_freq(rps, rps->max_freq));
> +
> +	drm_printf(p, "Current freq: %d MHz\n",
> +		   intel_gpu_freq(rps, rps->cur_freq));
> +	drm_printf(p, "Actual freq: %d MHz\n", cagf);
> +	drm_printf(p, "Idle freq: %d MHz\n",
> +		   intel_gpu_freq(rps, rps->idle_freq));
> +	drm_printf(p, "Min freq: %d MHz\n",
> +		   intel_gpu_freq(rps, rps->min_freq));
> +	drm_printf(p, "Boost freq: %d MHz\n",
> +		   intel_gpu_freq(rps, rps->boost_freq));
> +	drm_printf(p, "Max freq: %d MHz\n",
> +		   intel_gpu_freq(rps, rps->max_freq));
> +	drm_printf(p,
> +		   "efficient (RPe) frequency: %d MHz\n",
> +		   intel_gpu_freq(rps, rps->efficient_freq));
> +}
> +
>  static int set_max_freq(struct intel_rps *rps, u32 val)
>  {
>  	struct drm_i915_private *i915 = rps_to_i915(rps);
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps.h b/drivers/gpu/drm/i915/gt/intel_rps.h
> index 4509dfdc52e0..110300dfd438 100644
> --- a/drivers/gpu/drm/i915/gt/intel_rps.h
> +++ b/drivers/gpu/drm/i915/gt/intel_rps.h
> @@ -10,6 +10,7 @@
>  #include "i915_reg_defs.h"
>  
>  struct i915_request;
> +struct drm_printer;
>  
>  void intel_rps_init_early(struct intel_rps *rps);
>  void intel_rps_init(struct intel_rps *rps);
> @@ -54,6 +55,8 @@ void intel_rps_lower_unslice(struct intel_rps *rps);
>  u32 intel_rps_read_throttle_reason(struct intel_rps *rps);
>  bool rps_read_mask_mmio(struct intel_rps *rps, i915_reg_t reg32, u32 mask);
>  
> +void gen6_rps_frequency_dump(struct intel_rps *rps, struct drm_printer *p);
> +
>  void gen5_rps_irq_handler(struct intel_rps *rps);
>  void gen6_rps_irq_handler(struct intel_rps *rps, u32 pm_iir);
>  void gen11_rps_irq_handler(struct intel_rps *rps, u32 pm_iir);

-- 
Jani Nikula, Intel Open Source Graphics Center



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