We currently don't have support for parsing SDVO mappings from BIOS so we're guessing the bus switch parameter. This isn't working so hardcode it to a configuration known to work on most poulsbo hardware.
Signed-off-by: Patrik Jakobsson patrik.r.jakobsson@gmail.com --- drivers/gpu/drm/gma500/psb_intel_sdvo.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c b/drivers/gpu/drm/gma500/psb_intel_sdvo.c index 20d5366..4882b29 100644 --- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c +++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c @@ -1876,6 +1876,13 @@ static const struct drm_encoder_funcs psb_intel_sdvo_enc_funcs = { static void psb_intel_sdvo_guess_ddc_bus(struct psb_intel_sdvo *sdvo) { + /* FIXME: At the moment, ddc_bus = 2 is the only thing that works. + * We need to figure out if this is true for all available poulsbo + * hardware, or if we need to fiddle with the guessing code above. + * The problem might go away if we can parse sdvo mappings from bios */ + sdvo->ddc_bus = 2; + +#if 0 uint16_t mask = 0; unsigned int num_bits;
@@ -1907,6 +1914,7 @@ psb_intel_sdvo_guess_ddc_bus(struct psb_intel_sdvo *sdvo)
/* Corresponds to SDVO_CONTROL_BUS_DDCx */ sdvo->ddc_bus = 1 << num_bits; +#endif }
/**