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drm/i915/dram: add intel_fsb_freq() and use it

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

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/c5b77311c5f64b7163c86a042b7d023c07a685e2.1755511595.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula 2025-08-18 13:07:24 +03:00
parent 1d409b0a77
commit e0b1bbed5e
4 changed files with 13 additions and 7 deletions
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2
drivers/gpu/drm/i915/display/intel_cdclk.c
View File

@ -3574,7 +3574,7 @@ 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);
}
/**

2
drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
View File

@ -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)

14
drivers/gpu/drm/i915/soc/intel_dram.c
View File

@ -154,7 +154,7 @@ 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;
@ -236,13 +236,19 @@ 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);
}

2
drivers/gpu/drm/i915/soc/intel_dram.h
View File

@ -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__ */