From 20d391d72519527d2266a0166490118b40ff998d Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 1 Feb 2011 16:12:34 -0500 Subject: [PATCH] drm/radeon/kms: rv6xx+ thermal sensor fixes Some fixes to the thermal sensor code: - handle negative numbers - properly handle temp calculation on different asics Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/evergreen.c | 21 ++++++++++++--------- drivers/gpu/drm/radeon/r600.c | 8 ++++++-- drivers/gpu/drm/radeon/radeon.h | 8 ++++---- drivers/gpu/drm/radeon/radeon_pm.c | 2 +- drivers/gpu/drm/radeon/rv770.c | 23 ++++++++++++++--------- 5 files changed, 37 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 677af91b555c..5a11fec98fb2 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -97,26 +97,29 @@ u32 evergreen_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base) } /* get temperature in millidegrees */ -u32 evergreen_get_temp(struct radeon_device *rdev) +int evergreen_get_temp(struct radeon_device *rdev) { u32 temp = (RREG32(CG_MULT_THERMAL_STATUS) & ASIC_T_MASK) >> ASIC_T_SHIFT; u32 actual_temp = 0; - if ((temp >> 10) & 1) - actual_temp = 0; - else if ((temp >> 9) & 1) + if (temp & 0x400) + actual_temp = -256; + else if (temp & 0x200) actual_temp = 255; - else - actual_temp = (temp >> 1) & 0xff; + else if (temp & 0x100) { + actual_temp = temp & 0x1ff; + actual_temp |= ~0x1ff; + } else + actual_temp = temp & 0xff; - return actual_temp * 1000; + return (actual_temp * 1000) / 2; } -u32 sumo_get_temp(struct radeon_device *rdev) +int sumo_get_temp(struct radeon_device *rdev) { u32 temp = RREG32(CG_THERMAL_STATUS) & 0xff; - u32 actual_temp = (temp >> 1) & 0xff; + int actual_temp = temp - 49; return actual_temp * 1000; } diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 1e10e3e2ba2a..650672a0f5ad 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -97,12 +97,16 @@ void r600_irq_disable(struct radeon_device *rdev); static void r600_pcie_gen2_enable(struct radeon_device *rdev); /* get temperature in millidegrees */ -u32 rv6xx_get_temp(struct radeon_device *rdev) +int rv6xx_get_temp(struct radeon_device *rdev) { u32 temp = (RREG32(CG_THERMAL_STATUS) & ASIC_T_MASK) >> ASIC_T_SHIFT; + int actual_temp = temp & 0xff; - return temp * 1000; + if (temp & 0x100) + actual_temp -= 256; + + return actual_temp * 1000; } void r600_pm_get_dynpm_state(struct radeon_device *rdev) diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 71d2a554bbe6..4f29d445d038 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -179,10 +179,10 @@ void radeon_combios_get_power_modes(struct radeon_device *rdev); void radeon_atombios_get_power_modes(struct radeon_device *rdev); void radeon_atom_set_voltage(struct radeon_device *rdev, u16 level); void rs690_pm_info(struct radeon_device *rdev); -extern u32 rv6xx_get_temp(struct radeon_device *rdev); -extern u32 rv770_get_temp(struct radeon_device *rdev); -extern u32 evergreen_get_temp(struct radeon_device *rdev); -extern u32 sumo_get_temp(struct radeon_device *rdev); +extern int rv6xx_get_temp(struct radeon_device *rdev); +extern int rv770_get_temp(struct radeon_device *rdev); +extern int evergreen_get_temp(struct radeon_device *rdev); +extern int sumo_get_temp(struct radeon_device *rdev); /* * Fences. diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index 3b1b2bf9cdd5..813620034a33 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -430,7 +430,7 @@ static ssize_t radeon_hwmon_show_temp(struct device *dev, { struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev)); struct radeon_device *rdev = ddev->dev_private; - u32 temp; + int temp; switch (rdev->pm.int_thermal_type) { case THERMAL_TYPE_RV6XX: diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c index 491dc9000655..2211a323db41 100644 --- a/drivers/gpu/drm/radeon/rv770.c +++ b/drivers/gpu/drm/radeon/rv770.c @@ -78,18 +78,23 @@ u32 rv770_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base) } /* get temperature in millidegrees */ -u32 rv770_get_temp(struct radeon_device *rdev) +int rv770_get_temp(struct radeon_device *rdev) { u32 temp = (RREG32(CG_MULT_THERMAL_STATUS) & ASIC_T_MASK) >> ASIC_T_SHIFT; - u32 actual_temp = 0; - - if ((temp >> 9) & 1) - actual_temp = 0; - else - actual_temp = (temp >> 1) & 0xff; - - return actual_temp * 1000; + int actual_temp; + + if (temp & 0x400) + actual_temp = -256; + else if (temp & 0x200) + actual_temp = 255; + else if (temp & 0x100) { + actual_temp = temp & 0x1ff; + actual_temp |= ~0x1ff; + } else + actual_temp = temp & 0xff; + + return (actual_temp * 1000) / 2; } void rv770_pm_misc(struct radeon_device *rdev) -- 2.20.1