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| author | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-23 10:00:05 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-23 10:00:05 -0800 |
| commit | 193cb93e5a5f32c0520eed17e87135d20594d1e1 (patch) | |
| tree | 3b5584f4e5e73f5f01807e5176cbe29e1db69868 /drivers/gpu/drm/radeon/radeon_clocks.c | |
| parent | 23e707dd9b0b26215d801c59e87feed1c218a0f9 (diff) | |
| parent | f42ecb2808db5386f983d593a7c08d3ea3b94a27 (diff) | |
| download | kernel-crypto-193cb93e5a5f32c0520eed17e87135d20594d1e1.tar.gz kernel-crypto-193cb93e5a5f32c0520eed17e87135d20594d1e1.tar.xz kernel-crypto-193cb93e5a5f32c0520eed17e87135d20594d1e1.zip | |
Merge branch 'master' of /home/gregkh/linux/git/torvalds-2.6
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_clocks.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_clocks.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_clocks.c b/drivers/gpu/drm/radeon/radeon_clocks.c index a8135416762..812f24dbc2a 100644 --- a/drivers/gpu/drm/radeon/radeon_clocks.c +++ b/drivers/gpu/drm/radeon/radeon_clocks.c @@ -44,6 +44,10 @@ uint32_t radeon_legacy_get_engine_clock(struct radeon_device *rdev) ref_div = RREG32_PLL(RADEON_M_SPLL_REF_FB_DIV) & RADEON_M_SPLL_REF_DIV_MASK; + + if (ref_div == 0) + return 0; + sclk = fb_div / ref_div; post_div = RREG32_PLL(RADEON_SCLK_CNTL) & RADEON_SCLK_SRC_SEL_MASK; @@ -58,7 +62,7 @@ uint32_t radeon_legacy_get_engine_clock(struct radeon_device *rdev) } /* 10 khz */ -static uint32_t radeon_legacy_get_memory_clock(struct radeon_device *rdev) +uint32_t radeon_legacy_get_memory_clock(struct radeon_device *rdev) { struct radeon_pll *mpll = &rdev->clock.mpll; uint32_t fb_div, ref_div, post_div, mclk; @@ -70,6 +74,10 @@ static uint32_t radeon_legacy_get_memory_clock(struct radeon_device *rdev) ref_div = RREG32_PLL(RADEON_M_SPLL_REF_FB_DIV) & RADEON_M_SPLL_REF_DIV_MASK; + + if (ref_div == 0) + return 0; + mclk = fb_div / ref_div; post_div = RREG32_PLL(RADEON_MCLK_CNTL) & 0x7; @@ -98,8 +106,19 @@ void radeon_get_clock_info(struct drm_device *dev) ret = radeon_combios_get_clock_info(dev); if (ret) { - if (p1pll->reference_div < 2) - p1pll->reference_div = 12; + if (p1pll->reference_div < 2) { + if (!ASIC_IS_AVIVO(rdev)) { + u32 tmp = RREG32_PLL(RADEON_PPLL_REF_DIV); + if (ASIC_IS_R300(rdev)) + p1pll->reference_div = + (tmp & R300_PPLL_REF_DIV_ACC_MASK) >> R300_PPLL_REF_DIV_ACC_SHIFT; + else + p1pll->reference_div = tmp & RADEON_PPLL_REF_DIV_MASK; + if (p1pll->reference_div < 2) + p1pll->reference_div = 12; + } else + p1pll->reference_div = 12; + } if (p2pll->reference_div < 2) p2pll->reference_div = 12; if (rdev->family < CHIP_RS600) { |