[PATCH 1/5] drm/i915/dram: add intel_fsb_freq() and use it

[Jani Nikula]

Add a more generic intel_fsb_freq() function instead of platform
specific ones.

Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/display/intel_cdclk.c     |  2 +-
 drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c |  2 +-
 drivers/gpu/drm/i915/soc/intel_dram.c          | 14 ++++++++++----
 drivers/gpu/drm/i915/soc/intel_dram.h          |  2 +-
 4 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index 228aa64c1349..50f8e8e7b2a2 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -3569,7 +3569,7 @@ static int i9xx_hrawclk(struct intel_display *display)
 	struct drm_i915_private *i915 = to_i915(display->drm);
 
 	/* hrawclock is 1/4 the FSB frequency */
-	return DIV_ROUND_CLOSEST(i9xx_fsb_freq(i915), 4);
+	return DIV_ROUND_CLOSEST(intel_fsb_freq(i915), 4);
 }
 
 /**
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c b/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
index 6c499692d61e..88b147fa5cb1 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
@@ -148,7 +148,7 @@ static u32 gen4_read_clock_frequency(struct intel_uncore *uncore)
 	 *
 	 * Testing on actual hardware has shown there is no /16.
 	 */
-	return DIV_ROUND_CLOSEST(i9xx_fsb_freq(uncore->i915), 4) * 1000;
+	return DIV_ROUND_CLOSEST(intel_fsb_freq(uncore->i915), 4) * 1000;
 }
 
 static u32 read_clock_frequency(struct intel_uncore *uncore)
diff --git a/drivers/gpu/drm/i915/soc/intel_dram.c b/drivers/gpu/drm/i915/soc/intel_dram.c
index deb159548a09..6be3618d4885 100644
--- a/drivers/gpu/drm/i915/soc/intel_dram.c
+++ b/drivers/gpu/drm/i915/soc/intel_dram.c
@@ -153,7 +153,7 @@ static void detect_mem_freq(struct drm_i915_private *i915)
 		drm_dbg(&i915->drm, "DDR speed: %d kHz\n", i915->mem_freq);
 }
 
-unsigned int i9xx_fsb_freq(struct drm_i915_private *i915)
+static unsigned int i9xx_fsb_freq(struct drm_i915_private *i915)
 {
 	u32 fsb;
 
@@ -235,13 +235,19 @@ static unsigned int ilk_fsb_freq(struct drm_i915_private *dev_priv)
 	}
 }
 
-static void detect_fsb_freq(struct drm_i915_private *i915)
+unsigned int intel_fsb_freq(struct drm_i915_private *i915)
 {
 	if (GRAPHICS_VER(i915) == 5)
-		i915->fsb_freq = ilk_fsb_freq(i915);
+		return ilk_fsb_freq(i915);
 	else if (GRAPHICS_VER(i915) == 3 || GRAPHICS_VER(i915) == 4)
-		i915->fsb_freq = i9xx_fsb_freq(i915);
+		return i9xx_fsb_freq(i915);
+	else
+		return 0;
+}
 
+static void detect_fsb_freq(struct drm_i915_private *i915)
+{
+	i915->fsb_freq = intel_fsb_freq(i915);
 	if (i915->fsb_freq)
 		drm_dbg(&i915->drm, "FSB frequency: %d kHz\n", i915->fsb_freq);
 }
diff --git a/drivers/gpu/drm/i915/soc/intel_dram.h b/drivers/gpu/drm/i915/soc/intel_dram.h
index 2a696e03aad4..09a7a581d949 100644
--- a/drivers/gpu/drm/i915/soc/intel_dram.h
+++ b/drivers/gpu/drm/i915/soc/intel_dram.h
@@ -33,7 +33,7 @@ struct dram_info {
 
 void intel_dram_edram_detect(struct drm_i915_private *i915);
 int intel_dram_detect(struct drm_i915_private *i915);
-unsigned int i9xx_fsb_freq(struct drm_i915_private *i915);
+unsigned int intel_fsb_freq(struct drm_i915_private *i915);
 const struct dram_info *intel_dram_info(struct drm_device *drm);
 
 #endif /* __INTEL_DRAM_H__ */
-- 
2.39.5