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| author | Shirish S <s.shirish@samsung.com> | 2012-08-30 07:04:06 +0000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-09-13 11:28:59 +1000 |
| commit | cd004b3f4cd4169815c82bf9e424fda06978898a (patch) | |
| tree | 937c4b7676e7f375bb3cc6ad9833b17123a10c13 /drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | |
| parent | 93eb58d53fb14e9eeb1b42f8c04dbd7afc09adf7 (diff) | |
| download | talos-op-linux-cd004b3f4cd4169815c82bf9e424fda06978898a.tar.gz talos-op-linux-cd004b3f4cd4169815c82bf9e424fda06978898a.zip | |
drm: edid: add support for E-DDC
The current logic for probing ddc is limited to
2 blocks (256 bytes), this patch adds support
for the 4 block (512) data.
To do this, a single 8-bit segment index is
passed to the display via the I2C address 30h.
Data from the selected segment is then immediately
read via the regular DDC2 address using a repeated
I2C 'START' signal.
Signed-off-by: Shirish S <s.shirish@samsung.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_kms.c')
0 files changed, 0 insertions, 0 deletions
