[Intel-gfx] [PATCH 06/10] drm/i915/psr: set CHICKEN_TRANS for psr2

[Jani Nikula]

On Fri, 13 Jan 2017, Rodrigo Vivi <rodrigo.vivi at gmail.com> wrote:
> This and all the remaining patches on this series (6,7,8 and 9) got
> merged to dinq.

Given that this patch series was not properly sent as a thread, I don't
think our CI ran it as a whole, and it should not have been pushed
before that.

BR,
Jani.

>
> Thanks for the patches.
>
> On Thu, Jan 12, 2017 at 12:12 PM, Vivi, Rodrigo <rodrigo.vivi at intel.com> wrote:
>> Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
>>
>> On Fri, 2017-01-13 at 00:31 +0530, vathsala nagaraju wrote:
>>> As per bpsec, CHICKEN_TRANS_EDP bit 12 ,15 must be programmed in
>>> psr2 enable sequence.
>>> bit 12 : Program Transcoder EDP VSC DIP header with a valid setting for
>>>         PSR2 and Set CHICKEN_TRANS_EDP(0x420cc) bit 12 for programmable
>>>         header packet.
>>> bit 15 : Set CHICKEN_TRANS_EDP(0x420cc) bit 15 if Y coordinate is supported
>>>
>>> v2: (Rodrigo)
>>> - move CHICKEN_TRANS_EDP bit set logic right after setup_vsc
>>>
>>> v3:(Rodrigo)
>>> - initialize chicken_trans to CHICKEN_TRANS_BIT12 instead of 0
>>>
>>> v4:(chris wilson)
>>> - use BIT(12), remove CHICKEN_TRANS_BIT12
>>> - remove unnecessary comments
>>> - update commit message
>>>
>>> v5:
>>> - rename bit 12 PSR2_VSC_ENABLE_PROG_HEADER
>>> - rename bit 15 PSR2_ADD_VERTICAL_LINE_COUNT
>>>
>>> v6:(Rodrigo)
>>> - remove TRANS_EDP=3, use cpu_transcoder
>>>
>>> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
>>> Cc: Jim Bride <jim.bride at linux.intel.com>
>>> Signed-off-by: vathsala nagaraju <vathsala.nagaraju at intel.com>
>>> Signed-off-by: Patil Deepti <deepti.patil at intel.com>
>>> ---
>>>  drivers/gpu/drm/i915/i915_reg.h  | 6 ++++++
>>>  drivers/gpu/drm/i915/intel_psr.c | 7 +++++++
>>>  2 files changed, 13 insertions(+)
>>>
>>> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
>>> index 7830e6e..c9c1ccd 100644
>>> --- a/drivers/gpu/drm/i915/i915_reg.h
>>> +++ b/drivers/gpu/drm/i915/i915_reg.h
>>> @@ -6449,6 +6449,12 @@ enum {
>>>  #define  BDW_DPRS_MASK_VBLANK_SRD    (1 << 0)
>>>  #define CHICKEN_PIPESL_1(pipe) _MMIO_PIPE(pipe, _CHICKEN_PIPESL_1_A, _CHICKEN_PIPESL_1_B)
>>>
>>> +#define CHICKEN_TRANS_A         0x420c0
>>> +#define CHICKEN_TRANS_B         0x420c4
>>> +#define CHICKEN_TRANS(trans) _MMIO_TRANS(trans, CHICKEN_TRANS_A, CHICKEN_TRANS_B)
>>> +#define PSR2_VSC_ENABLE_PROG_HEADER    (1<<12)
>>> +#define PSR2_ADD_VERTICAL_LINE_COUNT   (1<<15)
>>> +
>>>  #define DISP_ARB_CTL _MMIO(0x45000)
>>>  #define  DISP_FBC_MEMORY_WAKE                (1<<31)
>>>  #define  DISP_TILE_SURFACE_SWIZZLING (1<<13)
>>> diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
>>> index 36c4045..935402e 100644
>>> --- a/drivers/gpu/drm/i915/intel_psr.c
>>> +++ b/drivers/gpu/drm/i915/intel_psr.c
>>> @@ -480,6 +480,9 @@ void intel_psr_enable(struct intel_dp *intel_dp)
>>>       struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
>>>       struct drm_device *dev = intel_dig_port->base.base.dev;
>>>       struct drm_i915_private *dev_priv = to_i915(dev);
>>> +     struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc);
>>> +     enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
>>> +     u32 chicken;
>>>
>>>       if (!HAS_PSR(dev_priv)) {
>>>               DRM_DEBUG_KMS("PSR not supported on this platform\n");
>>> @@ -505,6 +508,10 @@ void intel_psr_enable(struct intel_dp *intel_dp)
>>>       if (HAS_DDI(dev_priv)) {
>>>               if (dev_priv->psr.psr2_support) {
>>>                       skl_psr_setup_su_vsc(intel_dp);
>>> +                     chicken = PSR2_VSC_ENABLE_PROG_HEADER;
>>> +                     if (dev_priv->psr.y_cord_support)
>>> +                             chicken |= PSR2_ADD_VERTICAL_LINE_COUNT;
>>> +                     I915_WRITE(CHICKEN_TRANS(cpu_transcoder), chicken);
>>>               } else {
>>>                       /* set up vsc header for psr1 */
>>>                       hsw_psr_setup_vsc(intel_dp);
>>
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>> Intel-gfx at lists.freedesktop.org
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-- 
Jani Nikula, Intel Open Source Technology Center