drm/i915: Move rps.hw_lock to dev_priv and s/hw_lock/pcu_lock

In order to separate GT PM related functionality into new structure
we are updating rps structure. hw_lock in it is used for display
related PCU communication too hence move it to dev_priv.
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/1507360055-19948-8-git-send-email-sagar.a.kamble@intel.comAcked-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171010213010.7415-7-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/i915_debugfs.c

@@ -1097,7 +1097,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
 	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		u32 rpmodectl, freq_sts;
 
-		mutex_lock(&dev_priv->rps.hw_lock);
+		mutex_lock(&dev_priv->pcu_lock);
 
 		rpmodectl = I915_READ(GEN6_RP_CONTROL);
 		seq_printf(m, "Video Turbo Mode: %s\n",
@@ -1130,7 +1130,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
 		seq_printf(m,
 			   "efficient (RPe) frequency: %d MHz\n",
 			   intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq));
-		mutex_unlock(&dev_priv->rps.hw_lock);
+		mutex_unlock(&dev_priv->pcu_lock);
 	} else if (INTEL_GEN(dev_priv) >= 6) {
 		u32 rp_state_limits;
 		u32 gt_perf_status;
@@ -1565,9 +1565,9 @@ static int gen6_drpc_info(struct seq_file *m)
 		gen9_powergate_status = I915_READ(GEN9_PWRGT_DOMAIN_STATUS);
 	}
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	seq_printf(m, "RC1e Enabled: %s\n",
 		   yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
@@ -1842,7 +1842,7 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
 
 	intel_runtime_pm_get(dev_priv);
 
-	ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
+	ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
 	if (ret)
 		goto out;
 
@@ -1873,7 +1873,7 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
 			   ((ia_freq >> 8) & 0xff) * 100);
 	}
 
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 out:
 	intel_runtime_pm_put(dev_priv);
@@ -4320,7 +4320,7 @@ i915_max_freq_set(void *data, u64 val)
 
 	DRM_DEBUG_DRIVER("Manually setting max freq to %llu\n", val);
 
-	ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
+	ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
 	if (ret)
 		return ret;
 
@@ -4333,7 +4333,7 @@ i915_max_freq_set(void *data, u64 val)
 	hw_min = dev_priv->rps.min_freq;
 
 	if (val < hw_min || val > hw_max || val < dev_priv->rps.min_freq_softlimit) {
-		mutex_unlock(&dev_priv->rps.hw_lock);
+		mutex_unlock(&dev_priv->pcu_lock);
 		return -EINVAL;
 	}
 
@@ -4342,7 +4342,7 @@ i915_max_freq_set(void *data, u64 val)
 	if (intel_set_rps(dev_priv, val))
 		DRM_DEBUG_DRIVER("failed to update RPS to new softlimit\n");
 
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	return 0;
 }
@@ -4375,7 +4375,7 @@ i915_min_freq_set(void *data, u64 val)
 
 	DRM_DEBUG_DRIVER("Manually setting min freq to %llu\n", val);
 
-	ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
+	ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
 	if (ret)
 		return ret;
 
@@ -4389,7 +4389,7 @@ i915_min_freq_set(void *data, u64 val)
 
 	if (val < hw_min ||
 	    val > hw_max || val > dev_priv->rps.max_freq_softlimit) {
-		mutex_unlock(&dev_priv->rps.hw_lock);
+		mutex_unlock(&dev_priv->pcu_lock);
 		return -EINVAL;
 	}
 
@@ -4398,7 +4398,7 @@ i915_min_freq_set(void *data, u64 val)
 	if (intel_set_rps(dev_priv, val))
 		DRM_DEBUG_DRIVER("failed to update RPS to new softlimit\n");
 
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	return 0;
 }

drivers/gpu/drm/i915/i915_drv.h

@@ -1364,14 +1364,6 @@ struct intel_gen6_power_mgmt {
 
 	/* manual wa residency calculations */
 	struct intel_rps_ei ei;
-
-	/*
-	 * Protects RPS/RC6 register access and PCU communication.
-	 * Must be taken after struct_mutex if nested. Note that
-	 * this lock may be held for long periods of time when
-	 * talking to hw - so only take it when talking to hw!
-	 */
-	struct mutex hw_lock;
 };
 
 /* defined intel_pm.c */
@@ -2421,6 +2413,14 @@ struct drm_i915_private {
 	/* Cannot be determined by PCIID. You must always read a register. */
 	u32 edram_cap;
 
+	/*
+	 * Protects RPS/RC6 register access and PCU communication.
+	 * Must be taken after struct_mutex if nested. Note that
+	 * this lock may be held for long periods of time when
+	 * talking to hw - so only take it when talking to hw!
+	 */
+	struct mutex pcu_lock;
+
 	/* gen6+ rps state */
 	struct intel_gen6_power_mgmt rps;
 

drivers/gpu/drm/i915/i915_irq.c

@@ -1181,7 +1181,7 @@ static void gen6_pm_rps_work(struct work_struct *work)
 	if ((pm_iir & dev_priv->pm_rps_events) == 0 && !client_boost)
 		goto out;
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 
 	pm_iir |= vlv_wa_c0_ei(dev_priv, pm_iir);
 
@@ -1235,7 +1235,7 @@ static void gen6_pm_rps_work(struct work_struct *work)
 		dev_priv->rps.last_adj = 0;
 	}
 
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 out:
 	/* Make sure not to corrupt PMIMR state used by ringbuffer on GEN6 */

drivers/gpu/drm/i915/i915_sysfs.c

@@ -246,7 +246,7 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
 
 	intel_runtime_pm_get(dev_priv);
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		u32 freq;
 		freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
@@ -261,7 +261,7 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
 			ret = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
 		ret = intel_gpu_freq(dev_priv, ret);
 	}
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	intel_runtime_pm_put(dev_priv);
 
@@ -304,9 +304,9 @@ static ssize_t gt_boost_freq_mhz_store(struct device *kdev,
 	if (val < dev_priv->rps.min_freq || val > dev_priv->rps.max_freq)
 		return -EINVAL;
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	dev_priv->rps.boost_freq = val;
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	return count;
 }
@@ -344,14 +344,14 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
 
 	intel_runtime_pm_get(dev_priv);
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 
 	val = intel_freq_opcode(dev_priv, val);
 
 	if (val < dev_priv->rps.min_freq ||
 	    val > dev_priv->rps.max_freq ||
 	    val < dev_priv->rps.min_freq_softlimit) {
-		mutex_unlock(&dev_priv->rps.hw_lock);
+		mutex_unlock(&dev_priv->pcu_lock);
 		intel_runtime_pm_put(dev_priv);
 		return -EINVAL;
 	}
@@ -371,7 +371,7 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
 	 * frequency request may be unchanged. */
 	ret = intel_set_rps(dev_priv, val);
 
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	intel_runtime_pm_put(dev_priv);
 
@@ -401,14 +401,14 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
 
 	intel_runtime_pm_get(dev_priv);
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 
 	val = intel_freq_opcode(dev_priv, val);
 
 	if (val < dev_priv->rps.min_freq ||
 	    val > dev_priv->rps.max_freq ||
 	    val > dev_priv->rps.max_freq_softlimit) {
-		mutex_unlock(&dev_priv->rps.hw_lock);
+		mutex_unlock(&dev_priv->pcu_lock);
 		intel_runtime_pm_put(dev_priv);
 		return -EINVAL;
 	}
@@ -424,7 +424,7 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
 	 * frequency request may be unchanged. */
 	ret = intel_set_rps(dev_priv, val);
 
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	intel_runtime_pm_put(dev_priv);
 

drivers/gpu/drm/i915/intel_cdclk.c

@@ -503,7 +503,7 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
 	else
 		cmd = 0;
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
 	val &= ~DSPFREQGUAR_MASK;
 	val |= (cmd << DSPFREQGUAR_SHIFT);
@@ -513,7 +513,7 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
 		     50)) {
 		DRM_ERROR("timed out waiting for CDclk change\n");
 	}
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	mutex_lock(&dev_priv->sb_lock);
 
@@ -590,7 +590,7 @@ static void chv_set_cdclk(struct drm_i915_private *dev_priv,
 	 */
 	cmd = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
 	val &= ~DSPFREQGUAR_MASK_CHV;
 	val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
@@ -600,7 +600,7 @@ static void chv_set_cdclk(struct drm_i915_private *dev_priv,
 		     50)) {
 		DRM_ERROR("timed out waiting for CDclk change\n");
 	}
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	intel_update_cdclk(dev_priv);
 
@@ -656,10 +656,10 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
 		 "trying to change cdclk frequency with cdclk not enabled\n"))
 		return;
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	ret = sandybridge_pcode_write(dev_priv,
 				      BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0);
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 	if (ret) {
 		DRM_ERROR("failed to inform pcode about cdclk change\n");
 		return;
@@ -712,9 +712,9 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
 			LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
 		DRM_ERROR("Switching back to LCPLL failed\n");
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, data);
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	I915_WRITE(CDCLK_FREQ, DIV_ROUND_CLOSEST(cdclk, 1000) - 1);
 
@@ -928,12 +928,12 @@ static void skl_set_cdclk(struct drm_i915_private *dev_priv,
 
 	WARN_ON((cdclk == 24000) != (vco == 0));
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
 				SKL_CDCLK_PREPARE_FOR_CHANGE,
 				SKL_CDCLK_READY_FOR_CHANGE,
 				SKL_CDCLK_READY_FOR_CHANGE, 3);
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 	if (ret) {
 		DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
 			  ret);
@@ -975,9 +975,9 @@ static void skl_set_cdclk(struct drm_i915_private *dev_priv,
 	POSTING_READ(CDCLK_CTL);
 
 	/* inform PCU of the change */
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, pcu_ack);
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	intel_update_cdclk(dev_priv);
 }
@@ -1268,10 +1268,10 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
 	}
 
 	/* Inform power controller of upcoming frequency change */
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
 				      0x80000000);
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	if (ret) {
 		DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n",
@@ -1300,10 +1300,10 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
 		val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
 	I915_WRITE(CDCLK_CTL, val);
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
 				      DIV_ROUND_UP(cdclk, 25000));
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	if (ret) {
 		DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n",
@@ -1518,12 +1518,12 @@ static void cnl_set_cdclk(struct drm_i915_private *dev_priv,
 	u32 val, divider, pcu_ack;
 	int ret;
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
 				SKL_CDCLK_PREPARE_FOR_CHANGE,
 				SKL_CDCLK_READY_FOR_CHANGE,
 				SKL_CDCLK_READY_FOR_CHANGE, 3);
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 	if (ret) {
 		DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
 			  ret);
@@ -1575,9 +1575,9 @@ static void cnl_set_cdclk(struct drm_i915_private *dev_priv,
 	I915_WRITE(CDCLK_CTL, val);
 
 	/* inform PCU of the change */
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 	sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, pcu_ack);
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	intel_update_cdclk(dev_priv);
 }

drivers/gpu/drm/i915/intel_display.c

@@ -4946,10 +4946,10 @@ void hsw_enable_ips(struct intel_crtc *crtc)
 
 	assert_plane_enabled(dev_priv, crtc->plane);
 	if (IS_BROADWELL(dev_priv)) {
-		mutex_lock(&dev_priv->rps.hw_lock);
+		mutex_lock(&dev_priv->pcu_lock);
 		WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL,
 						IPS_ENABLE | IPS_PCODE_CONTROL));
-		mutex_unlock(&dev_priv->rps.hw_lock);
+		mutex_unlock(&dev_priv->pcu_lock);
 		/* Quoting Art Runyan: "its not safe to expect any particular
 		 * value in IPS_CTL bit 31 after enabling IPS through the
 		 * mailbox." Moreover, the mailbox may return a bogus state,
@@ -4979,9 +4979,9 @@ void hsw_disable_ips(struct intel_crtc *crtc)
 
 	assert_plane_enabled(dev_priv, crtc->plane);
 	if (IS_BROADWELL(dev_priv)) {
-		mutex_lock(&dev_priv->rps.hw_lock);
+		mutex_lock(&dev_priv->pcu_lock);
 		WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
-		mutex_unlock(&dev_priv->rps.hw_lock);
+		mutex_unlock(&dev_priv->pcu_lock);
 		/* wait for pcode to finish disabling IPS, which may take up to 42ms */
 		if (intel_wait_for_register(dev_priv,
 					    IPS_CTL, IPS_ENABLE, 0,
@@ -8839,11 +8839,11 @@ static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
 static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
 {
 	if (IS_HASWELL(dev_priv)) {
-		mutex_lock(&dev_priv->rps.hw_lock);
+		mutex_lock(&dev_priv->pcu_lock);
 		if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
 					    val))
 			DRM_DEBUG_KMS("Failed to write to D_COMP\n");
-		mutex_unlock(&dev_priv->rps.hw_lock);
+		mutex_unlock(&dev_priv->pcu_lock);
 	} else {
 		I915_WRITE(D_COMP_BDW, val);
 		POSTING_READ(D_COMP_BDW);

drivers/gpu/drm/i915/intel_runtime_pm.c

@@ -785,7 +785,7 @@ static void vlv_set_power_well(struct drm_i915_private *dev_priv,
 	state = enable ? PUNIT_PWRGT_PWR_ON(power_well_id) :
 			 PUNIT_PWRGT_PWR_GATE(power_well_id);
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 
 #define COND \
 	((vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask) == state)
@@ -806,7 +806,7 @@ static void vlv_set_power_well(struct drm_i915_private *dev_priv,
 #undef COND
 
 out:
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 }
 
 static void vlv_power_well_enable(struct drm_i915_private *dev_priv,
@@ -833,7 +833,7 @@ static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
 	mask = PUNIT_PWRGT_MASK(power_well_id);
 	ctrl = PUNIT_PWRGT_PWR_ON(power_well_id);
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 
 	state = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask;
 	/*
@@ -852,7 +852,7 @@ static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
 	ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL) & mask;
 	WARN_ON(ctrl != state);
 
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	return enabled;
 }
@@ -1364,7 +1364,7 @@ static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
 	bool enabled;
 	u32 state, ctrl;
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 
 	state = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & DP_SSS_MASK(pipe);
 	/*
@@ -1381,7 +1381,7 @@ static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
 	ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & DP_SSC_MASK(pipe);
 	WARN_ON(ctrl << 16 != state);
 
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 
 	return enabled;
 }
@@ -1396,7 +1396,7 @@ static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
 
 	state = enable ? DP_SSS_PWR_ON(pipe) : DP_SSS_PWR_GATE(pipe);
 
-	mutex_lock(&dev_priv->rps.hw_lock);
+	mutex_lock(&dev_priv->pcu_lock);
 
 #define COND \
 	((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & DP_SSS_MASK(pipe)) == state)
@@ -1417,7 +1417,7 @@ static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
 #undef COND
 
 out:
-	mutex_unlock(&dev_priv->rps.hw_lock);
+	mutex_unlock(&dev_priv->pcu_lock);
 }
 
 static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv,

drivers/gpu/drm/i915/intel_sideband.c

@@ -81,7 +81,7 @@ u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
 {
 	u32 val = 0;
 
-	WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock));
+	WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
 
 	mutex_lock(&dev_priv->sb_lock);
 	vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
@@ -95,7 +95,7 @@ int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val)
 {
 	int err;
 
-	WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock));
+	WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
 
 	mutex_lock(&dev_priv->sb_lock);
 	err = vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
@@ -125,7 +125,7 @@ u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr)
 {
 	u32 val = 0;
 
-	WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock));
+	WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
 
 	mutex_lock(&dev_priv->sb_lock);
 	vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_NC,