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| author | Alex Deucher <alexdeucher@gmail.com> | 2009-12-23 03:23:21 -0500 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-02-09 09:31:10 +1000 |
| commit | 40bacf1631a3e8654b1128aa9b72e73ca801c9e4 (patch) | |
| tree | 9d4dc63b4dfb124203335dd4e541c657417960ce /drivers/gpu/drm/radeon/radeon_combios.c | |
| parent | 5a6f98f5bff7f975c61d56b5c756b5a96c4db167 (diff) | |
| download | blackbird-op-linux-40bacf1631a3e8654b1128aa9b72e73ca801c9e4.tar.gz blackbird-op-linux-40bacf1631a3e8654b1128aa9b72e73ca801c9e4.zip | |
drm/radeon/kms: add support for hw i2c on r1xx-r5xx
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>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_combios.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_combios.c | 71 |
1 files changed, 67 insertions, 4 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c index 318afe83e6b0..e208d730f514 100644 --- a/drivers/gpu/drm/radeon/radeon_combios.c +++ b/drivers/gpu/drm/radeon/radeon_combios.c @@ -486,9 +486,65 @@ static struct radeon_i2c_bus_rec combios_setup_i2c_bus(struct radeon_device *rde i2c.y_data_reg = ddc_line; } - if (rdev->family < CHIP_R200) - i2c.hw_capable = false; - else { + switch (rdev->family) { + case CHIP_R100: + case CHIP_RV100: + case CHIP_RS100: + case CHIP_RV200: + case CHIP_RS200: + case CHIP_RS300: + switch (ddc_line) { + case RADEON_GPIO_DVI_DDC: + /* in theory this should be hw capable, + * but it doesn't seem to work + */ + i2c.hw_capable = false; + break; + default: + i2c.hw_capable = false; + break; + } + break; + case CHIP_R200: + switch (ddc_line) { + case RADEON_GPIO_DVI_DDC: + case RADEON_GPIO_MONID: + i2c.hw_capable = true; + break; + default: + i2c.hw_capable = false; + break; + } + break; + case CHIP_RV250: + case CHIP_RV280: + switch (ddc_line) { + case RADEON_GPIO_VGA_DDC: + case RADEON_GPIO_DVI_DDC: + case RADEON_GPIO_CRT2_DDC: + i2c.hw_capable = true; + break; + default: + i2c.hw_capable = false; + break; + } + break; + case CHIP_R300: + case CHIP_R350: + switch (ddc_line) { + case RADEON_GPIO_VGA_DDC: + case RADEON_GPIO_DVI_DDC: + i2c.hw_capable = true; + break; + default: + i2c.hw_capable = false; + break; + } + break; + case CHIP_RV350: + case CHIP_RV380: + case CHIP_RS400: + case CHIP_RS480: switch (ddc_line) { case RADEON_GPIO_VGA_DDC: case RADEON_GPIO_DVI_DDC: @@ -504,6 +560,10 @@ static struct radeon_i2c_bus_rec combios_setup_i2c_bus(struct radeon_device *rde i2c.hw_capable = false; break; } + break; + default: + i2c.hw_capable = false; + break; } i2c.mm_i2c = false; i2c.i2c_id = 0; @@ -1253,7 +1313,10 @@ bool radeon_legacy_get_ext_tmds_info_from_combios(struct radeon_encoder *encoder tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO"); break; case DDC_LCD: /* MM i2c */ - DRM_ERROR("MM i2c requires hw i2c engine\n"); + i2c_bus.valid = true; + i2c_bus.hw_capable = true; + i2c_bus.mm_i2c = true; + tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO"); break; default: DRM_ERROR("Unsupported gpio %d\n", gpio); |
