diff options
| author | Damien Lespiau | 2014-01-20 17:00:59 +0100 |
|---|---|---|
| committer | Daniel Vetter | 2014-09-24 14:47:40 +0200 |
| commit | b6b5e38323b276cae53cf34970d968084de701bc (patch) | |
| tree | b9fbc6916f535fa2c0d001b85ebc5c12b8bcb29d /drivers/gpu/drm/i915/intel_dp.c | |
| parent | drm/i915/skl: gen9 uses the same bind_vma() vfuncs as gen6+ (diff) | |
| download | kernel-qcow2-linux-b6b5e38323b276cae53cf34970d968084de701bc.tar.gz kernel-qcow2-linux-b6b5e38323b276cae53cf34970d968084de701bc.tar.xz kernel-qcow2-linux-b6b5e38323b276cae53cf34970d968084de701bc.zip | |
drm/i915/skl: Implement the get_aux_clock_divider() DP vfunc
We need to provide a vfunc that will make the code in intel_dp_aux_ch()
loop once to start the AUX transaction. The return value (clock divider)
is unused on SKL, so just return 1.
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 17c69101d086..4d2f704ec0a1 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -661,6 +661,16 @@ static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) return index ? 0 : 100; } +static uint32_t skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index) +{ + /* + * SKL doesn't need us to program the AUX clock divider (Hardware will + * derive the clock from CDCLK automatically). We still implement the + * get_aux_clock_divider vfunc to plug-in into the existing code. + */ + return index ? 0 : 1; +} + static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, bool has_aux_irq, int send_bytes, @@ -5083,7 +5093,9 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port, intel_dp->pps_pipe = INVALID_PIPE; /* intel_dp vfuncs */ - if (IS_VALLEYVIEW(dev)) + if (INTEL_INFO(dev)->gen >= 9) + intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider; + else if (IS_VALLEYVIEW(dev)) intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; |