drm/radeon/kms: add support for hw i2c on r1xx-r5xx

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wire hw i2c support into radeon i2c algo.

fixes merged:
- handle bus probing correctly
- use meaningful error numbers
- abort if transaction fails
- The line mapping is different depending on the asic.
- protect hw i2c engine with a mutex
- rs300 doesn't have a pin select bit
- r200 has a different pin select setup

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

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This commit is contained in:

Alex Deucher 2009-12-23 03:23:21 -05:00 • committed by Dave Airlie

parent 5a6f98f5bf

commit 40bacf1631

6 changed files with 736 additions and 82 deletions

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100

drivers/gpu/drm/radeon/r500_reg.h

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1

drivers/gpu/drm/radeon/radeon.h

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71

drivers/gpu/drm/radeon/radeon_combios.c

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1

drivers/gpu/drm/radeon/radeon_device.c

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597

drivers/gpu/drm/radeon/radeon_i2c.c

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48

drivers/gpu/drm/radeon/radeon_reg.h

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