Rather than calling get_memory_clock and get_engine_clock, used the tracked values from the pm code. Calling the tables adds additional latency in the modesetting and pm paths.
Signed-off-by: Alex Deucher alexdeucher@gmail.com --- drivers/gpu/drm/radeon/radeon_clocks.c | 8 ++++++++ drivers/gpu/drm/radeon/radeon_device.c | 28 +++++++++------------------- drivers/gpu/drm/radeon/radeon_i2c.c | 2 +- 3 files changed, 18 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_clocks.c b/drivers/gpu/drm/radeon/radeon_clocks.c index f64936c..5e916df 100644 --- a/drivers/gpu/drm/radeon/radeon_clocks.c +++ b/drivers/gpu/drm/radeon/radeon_clocks.c @@ -246,6 +246,14 @@ void radeon_get_clock_info(struct drm_device *dev) mpll->max_feedback_div = 0xff; mpll->best_vco = 0;
+ if (!rdev->clock.default_sclk) + rdev->clock.default_sclk = radeon_get_engine_clock(rdev); + if ((!rdev->clock.default_mclk) && rdev->asic->get_memory_clock) + rdev->clock.default_mclk = radeon_get_memory_clock(rdev); + + rdev->pm.current_sclk = rdev->clock.default_sclk; + rdev->pm.current_mclk = rdev->clock.default_mclk; + }
/* 10 khz */ diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 39a2b97..a1f3361 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -363,30 +363,20 @@ bool radeon_card_posted(struct radeon_device *rdev) void radeon_update_bandwidth_info(struct radeon_device *rdev) { fixed20_12 a; - u32 sclk, mclk; + u32 sclk = rdev->pm.current_sclk; + u32 mclk = rdev->pm.current_mclk;
- if (rdev->flags & RADEON_IS_IGP) { - sclk = radeon_get_engine_clock(rdev); - mclk = rdev->clock.default_mclk; - - a.full = dfixed_const(100); - rdev->pm.sclk.full = dfixed_const(sclk); - rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a); - rdev->pm.mclk.full = dfixed_const(mclk); - rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a); + /* sclk/mclk in Mhz */ + a.full = dfixed_const(100); + rdev->pm.sclk.full = dfixed_const(sclk); + rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a); + rdev->pm.mclk.full = dfixed_const(mclk); + rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
+ if (rdev->flags & RADEON_IS_IGP) { a.full = dfixed_const(16); /* core_bandwidth = sclk(Mhz) * 16 */ rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a); - } else { - sclk = radeon_get_engine_clock(rdev); - mclk = radeon_get_memory_clock(rdev); - - a.full = dfixed_const(100); - rdev->pm.sclk.full = dfixed_const(sclk); - rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a); - rdev->pm.mclk.full = dfixed_const(mclk); - rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a); } }
diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c index bfd2ce5..ea15e62 100644 --- a/drivers/gpu/drm/radeon/radeon_i2c.c +++ b/drivers/gpu/drm/radeon/radeon_i2c.c @@ -206,7 +206,7 @@ static void post_xfer(struct i2c_adapter *i2c_adap)
static u32 radeon_get_i2c_prescale(struct radeon_device *rdev) { - u32 sclk = radeon_get_engine_clock(rdev); + u32 sclk = rdev->pm.current_sclk; u32 prescale = 0; u32 nm; u8 n, m, loop;