[Intel-gfx] [PATCH] drm/i915/bdw: Add Broadwell support for debugfs rps freq info

[Tom.O'Rourke at intel.com]

From: Tom O'Rourke <Tom.O'Rourke at intel.com>

Add Broadwell support to i915_frequency_info
and extend i915_max|min_freq_get|set to (gen >= 6).

v2: generalized support for i915_max|min_freq_get|set (Daniel).

Signed-off-by: Tom O'Rourke <Tom.O'Rourke at intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c |   16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 5858cbb..a75d57d 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1027,7 +1027,9 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
 			   MEMSTAT_VID_SHIFT);
 		seq_printf(m, "Current P-state: %d\n",
 			   (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
-	} else if ((IS_GEN6(dev) || IS_GEN7(dev)) && !IS_VALLEYVIEW(dev)) {
+	} else if (IS_GEN6(dev)
+			|| (IS_GEN7(dev) && !IS_VALLEYVIEW(dev))
+			|| IS_BROADWELL(dev)) {
 		u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 		u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 		u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
@@ -1046,7 +1048,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
 
 		reqf = I915_READ(GEN6_RPNSWREQ);
 		reqf &= ~GEN6_TURBO_DISABLE;
-		if (IS_HASWELL(dev))
+		if (IS_HASWELL(dev) || IS_BROADWELL(dev))
 			reqf >>= 24;
 		else
 			reqf >>= 25;
@@ -1063,7 +1065,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
 		rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 		rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 		rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
-		if (IS_HASWELL(dev))
+		if (IS_HASWELL(dev) || IS_BROADWELL(dev))
 			cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
 		else
 			cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
@@ -3500,7 +3502,7 @@ i915_max_freq_get(void *data, u64 *val)
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	int ret;
 
-	if (!(IS_GEN6(dev) || IS_GEN7(dev)))
+	if (INTEL_INFO(dev)->gen < 6)
 		return -ENODEV;
 
 	flush_delayed_work(&dev_priv->rps.delayed_resume_work);
@@ -3526,7 +3528,7 @@ i915_max_freq_set(void *data, u64 val)
 	u32 rp_state_cap, hw_max, hw_min;
 	int ret;
 
-	if (!(IS_GEN6(dev) || IS_GEN7(dev)))
+	if (INTEL_INFO(dev)->gen < 6)
 		return -ENODEV;
 
 	flush_delayed_work(&dev_priv->rps.delayed_resume_work);
@@ -3581,7 +3583,7 @@ i915_min_freq_get(void *data, u64 *val)
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	int ret;
 
-	if (!(IS_GEN6(dev) || IS_GEN7(dev)))
+	if (INTEL_INFO(dev)->gen < 6)
 		return -ENODEV;
 
 	flush_delayed_work(&dev_priv->rps.delayed_resume_work);
@@ -3607,7 +3609,7 @@ i915_min_freq_set(void *data, u64 val)
 	u32 rp_state_cap, hw_max, hw_min;
 	int ret;
 
-	if (!(IS_GEN6(dev) || IS_GEN7(dev)))
+	if (INTEL_INFO(dev)->gen < 6)
 		return -ENODEV;
 
 	flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-- 
1.7.9.5