According to HSW PM programming guide, frequency bits starts at 24 instead of 25.
v2: Paulo Zanoni noticed that only frequency bits can be set at GEN6_RPNSWREQ. All others are read only. CC: Ben Widawsky <[email protected]> CC: Paulo Zanoni <[email protected] Signed-off-by: Rodrigo Vivi <[email protected]> --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_pm.c | 31 +++++++++++++++++++++---------- 2 files changed, 22 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index bceca11..5e995ec 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4190,6 +4190,7 @@ #define GEN6_RPNSWREQ 0xA008 #define GEN6_TURBO_DISABLE (1<<31) #define GEN6_FREQUENCY(x) ((x)<<25) +#define HSW_FREQUENCY(x) ((x)<<24) #define GEN6_OFFSET(x) ((x)<<19) #define GEN6_AGGRESSIVE_TURBO (0<<15) #define GEN6_RC_VIDEO_FREQ 0xA00C diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 6fa9b79..27f94cd 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2460,10 +2460,14 @@ void gen6_set_rps(struct drm_device *dev, u8 val) if (val == dev_priv->rps.cur_delay) return; - I915_WRITE(GEN6_RPNSWREQ, - GEN6_FREQUENCY(val) | - GEN6_OFFSET(0) | - GEN6_AGGRESSIVE_TURBO); + if (IS_HASWELL(dev)) + I915_WRITE(GEN6_RPNSWREQ, + HSW_FREQUENCY(val)); + else + I915_WRITE(GEN6_RPNSWREQ, + GEN6_FREQUENCY(val) | + GEN6_OFFSET(0) | + GEN6_AGGRESSIVE_TURBO); /* Make sure we continue to get interrupts * until we hit the minimum or maximum frequencies. @@ -2601,12 +2605,19 @@ static void gen6_enable_rps(struct drm_device *dev) GEN6_RC_CTL_EI_MODE(1) | GEN6_RC_CTL_HW_ENABLE); - I915_WRITE(GEN6_RPNSWREQ, - GEN6_FREQUENCY(10) | - GEN6_OFFSET(0) | - GEN6_AGGRESSIVE_TURBO); - I915_WRITE(GEN6_RC_VIDEO_FREQ, - GEN6_FREQUENCY(12)); + if (IS_HASWELL(dev)) { + I915_WRITE(GEN6_RPNSWREQ, + HSW_FREQUENCY(10)); + I915_WRITE(GEN6_RC_VIDEO_FREQ, + HSW_FREQUENCY(12)); + } else { + I915_WRITE(GEN6_RPNSWREQ, + GEN6_FREQUENCY(10) | + GEN6_OFFSET(0) | + GEN6_AGGRESSIVE_TURBO); + I915_WRITE(GEN6_RC_VIDEO_FREQ, + GEN6_FREQUENCY(12)); + } I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, -- 1.8.1.4 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
