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drm/radeon/kms: add support for internal thermal sensors (v3)

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rv6xx/rv7xx/evergreen families supported; older asics did
not have an internal thermal sensor.

Note, not all oems use the internal thermal sensor, so it's
only exposed in cases where it is used.

Note also, that most laptops use an oem specific ACPI solution for
GPU thermal information rather than using the internal thermal
sensor directly.

v2: export millidegrees celsius, use hwmon device properly.
v3: fix Kconfig

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2010-07-02 12:58:16 -04:00
committed by Dave Airlie
parent d7a2952f1a
commit 21a8122ad3
10 changed files with 170 additions and 4 deletions
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5
drivers/gpu/drm/radeon/r600d.h
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@@ -239,6 +239,11 @@
#define GRBM_SOFT_RESET 0x8020
#define SOFT_RESET_CP (1<<0)
#define CG_THERMAL_STATUS 0x7F4
#define ASIC_T(x) ((x) << 0)
#define ASIC_T_MASK 0x1FF
#define ASIC_T_SHIFT 0
#define HDP_HOST_PATH_CNTL 0x2C00
#define HDP_NONSURFACE_BASE 0x2C04
#define HDP_NONSURFACE_INFO 0x2C08