On Fri, 28 Mar 2014, Vandana Kannan <vandana.kannan@xxxxxxxxx> wrote:
> Definition of VLV RR switch bit and corresponding toggling in
> set_drrs function.
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> Signed-off-by: Vandana Kannan <vandana.kannan@xxxxxxxxx>
> Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 1 +
> drivers/gpu/drm/i915/intel_dp.c | 10 ++++++++--
> 2 files changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 04fc64a..435ed64 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -3257,6 +3257,7 @@ enum punit_power_well {
> #define PIPECONF_INTERLACE_MODE_MASK (7 << 21)
> #define PIPECONF_EDP_RR_MODE_SWITCH (1 << 20)
> #define PIPECONF_CXSR_DOWNCLOCK (1<<16)
> +#define PIPECONF_EDP_RR_MODE_SWITCH_VLV (1 << 14)
> #define PIPECONF_COLOR_RANGE_SELECT (1 << 13)
> #define PIPECONF_BPC_MASK (0x7 << 5)
> #define PIPECONF_8BPC (0<<5)
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 6cdbb38..79d880b 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -3721,10 +3721,16 @@ void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate)
> reg = PIPECONF(intel_crtc->config.cpu_transcoder);
> val = I915_READ(reg);
> if (index > DRRS_HIGH_RR) {
> - val |= PIPECONF_EDP_RR_MODE_SWITCH;
> + if (IS_VALLEYVIEW(dev))
> + val |= PIPECONF_EDP_RR_MODE_SWITCH_VLV;
> + else
> + val |= PIPECONF_EDP_RR_MODE_SWITCH;
> intel_dp_set_m2_n2(intel_crtc, &config->dp_m2_n2);
> } else {
> - val &= ~PIPECONF_EDP_RR_MODE_SWITCH;
> + if (IS_VALLEYVIEW(dev))
> + val &= ~PIPECONF_EDP_RR_MODE_SWITCH_VLV;
> + else
> + val &= ~PIPECONF_EDP_RR_MODE_SWITCH;
> }
> I915_WRITE(reg, val);
> }
> --
> 1.7.9.5
>
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--
Jani Nikula, Intel Open Source Technology Center
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