Merge tag 'drm-intel-fixes-2023-06-08' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

CDCLK voltage fix for ADL-P and eDP wake sync pulse fix.
Two error handling fixes to selftests (to appease static checkers)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZIGUHBz7+LsqN2nm@jlahtine-mobl.ger.corp.intel.com

Author: airlied

drivers/gpu/drm/i915/display/intel_cdclk.c

@@ -1453,6 +1453,18 @@ static u8 tgl_calc_voltage_level(int cdclk)
 		return 0;
 }
 
+static u8 rplu_calc_voltage_level(int cdclk)
+{
+	if (cdclk > 556800)
+		return 3;
+	else if (cdclk > 480000)
+		return 2;
+	else if (cdclk > 312000)
+		return 1;
+	else
+		return 0;
+}
+
 static void icl_readout_refclk(struct drm_i915_private *dev_priv,
 			       struct intel_cdclk_config *cdclk_config)
 {
@@ -3242,6 +3254,13 @@ static const struct intel_cdclk_funcs mtl_cdclk_funcs = {
 	.calc_voltage_level = tgl_calc_voltage_level,
 };
 
+static const struct intel_cdclk_funcs rplu_cdclk_funcs = {
+	.get_cdclk = bxt_get_cdclk,
+	.set_cdclk = bxt_set_cdclk,
+	.modeset_calc_cdclk = bxt_modeset_calc_cdclk,
+	.calc_voltage_level = rplu_calc_voltage_level,
+};
+
 static const struct intel_cdclk_funcs tgl_cdclk_funcs = {
 	.get_cdclk = bxt_get_cdclk,
 	.set_cdclk = bxt_set_cdclk,
@@ -3384,14 +3403,17 @@ void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv)
 		dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;
 		dev_priv->display.cdclk.table = dg2_cdclk_table;
 	} else if (IS_ALDERLAKE_P(dev_priv)) {
-		dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;
 		/* Wa_22011320316:adl-p[a0] */
-		if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+		if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0)) {
 			dev_priv->display.cdclk.table = adlp_a_step_cdclk_table;
-		else if (IS_ADLP_RPLU(dev_priv))
+			dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;
+		} else if (IS_ADLP_RPLU(dev_priv)) {
 			dev_priv->display.cdclk.table = rplu_cdclk_table;
-		else
+			dev_priv->display.funcs.cdclk = &rplu_cdclk_funcs;
+		} else {
 			dev_priv->display.cdclk.table = adlp_cdclk_table;
+			dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;
+		}
 	} else if (IS_ROCKETLAKE(dev_priv)) {
 		dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;
 		dev_priv->display.cdclk.table = rkl_cdclk_table;

drivers/gpu/drm/i915/display/intel_dp_aux.c

@@ -129,7 +129,7 @@ static int intel_dp_aux_sync_len(void)
 
 static int intel_dp_aux_fw_sync_len(void)
 {
-	int precharge = 16; /* 10-16 */
+	int precharge = 10; /* 10-16 */
 	int preamble = 8;
 
 	return precharge + preamble;

drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c

@@ -346,8 +346,10 @@ static int live_parallel_switch(void *arg)
 				continue;
 
 			ce = intel_context_create(data[m].ce[0]->engine);
-			if (IS_ERR(ce))
+			if (IS_ERR(ce)) {
+				err = PTR_ERR(ce);
 				goto out;
+			}
 
 			err = intel_context_pin(ce);
 			if (err) {
@@ -367,8 +369,10 @@ static int live_parallel_switch(void *arg)
 
 		worker = kthread_create_worker(0, "igt/parallel:%s",
 					       data[n].ce[0]->engine->name);
-		if (IS_ERR(worker))
+		if (IS_ERR(worker)) {
+			err = PTR_ERR(worker);
 			goto out;
+		}
 
 		data[n].worker = worker;
 	}
@@ -397,8 +401,10 @@ static int live_parallel_switch(void *arg)
 			}
 		}
 
-		if (igt_live_test_end(&t))
-			err = -EIO;
+		if (igt_live_test_end(&t)) {
+			err = err ?: -EIO;
+			break;
+		}
 	}
 
 out:

drivers/gpu/drm/i915/gt/selftest_execlists.c

@@ -1530,22 +1530,26 @@ static int live_busywait_preempt(void *arg)
 	struct drm_i915_gem_object *obj;
 	struct i915_vma *vma;
 	enum intel_engine_id id;
-	int err = -ENOMEM;
 	u32 *map;
+	int err;
 
 	/*
 	 * Verify that even without HAS_LOGICAL_RING_PREEMPTION, we can
 	 * preempt the busywaits used to synchronise between rings.
 	 */
 
 	ctx_hi = kernel_context(gt->i915, NULL);
-	if (!ctx_hi)
-		return -ENOMEM;
+	if (IS_ERR(ctx_hi))
+		return PTR_ERR(ctx_hi);
+
 	ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY;
 
 	ctx_lo = kernel_context(gt->i915, NULL);
-	if (!ctx_lo)
+	if (IS_ERR(ctx_lo)) {
+		err = PTR_ERR(ctx_lo);
 		goto err_ctx_hi;
+	}
+
 	ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY;
 
 	obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);