[Intel-gfx] [PATCH 1/2] drm/i915/icl: Add TBT checks for PLL calculations

[Srivatsa, Anusha]

>-----Original Message-----
>From: Zanoni, Paulo R
>Sent: Wednesday, July 25, 2018 3:41 PM
>To: Srivatsa, Anusha <anusha.srivatsa at intel.com>; intel-
>gfx at lists.freedesktop.org
>Cc: De Marchi, Lucas <lucas.demarchi at intel.com>
>Subject: Re: [PATCH 1/2] drm/i915/icl: Add TBT checks for PLL calculations
>
>Em Qua, 2018-07-25 às 14:28 -0700, Anusha Srivatsa escreveu:
>> Add missing TBT check in the Pll calculation.
>>
>> v2: do not use a auxiliary function to check if status is TBT or not.
>> (Paulo)
>>
>> Cc: Paulo Zanoni <paulo.r.zanoni at intel.com>
>> Cc: Lucas De Marchi <lucas.demarchi at intel.com>
>> Signed-off-by: Anusha Srivatsa <anusha.srivatsa at intel.com>
>> ---
>>  drivers/gpu/drm/i915/intel_dpll_mgr.c | 6 +++++-
>>  1 file changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c
>> b/drivers/gpu/drm/i915/intel_dpll_mgr.c
>> index 7e5e6eb..ba49078 100644
>> --- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
>> +++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
>> @@ -428,6 +428,7 @@ ibx_get_dpll(struct intel_crtc *crtc, struct
>> intel_crtc_state *crtc_state,
>>  	     struct intel_encoder *encoder)
>>  {
>>  	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
>> +
>>  	struct intel_shared_dpll *pll;
>>  	enum intel_dpll_id i;
>>
>
>This chunk does nothing and the space introduced is even against our coding
>style. Please review your own patches before submitting them to the mailing list:
>this is the kind of error that's very easy to catch by looking at the patch file,
>saving everybody's time.
>
Oops :(
Agreed. 
>
>> @@ -2866,6 +2867,9 @@ static struct intel_shared_dpll *
>> icl_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state
>> *crtc_state,
>>  	     struct intel_encoder *encoder)
>>  {
>> +	struct intel_digital_port *intel_dig_port =
>> +			enc_to_dig_port(&encoder->base);
>> +
>
>This chunk also adds a blank line that goes against our coding style.
>
Will take care!
Thanks,
Anusha
>
>>  	struct intel_shared_dpll *pll;
>>  	struct intel_dpll_hw_state pll_state = {};
>>  	enum port port = encoder->port;
>> @@ -2885,7 +2889,7 @@ icl_get_dpll(struct intel_crtc *crtc, struct
>> intel_crtc_state *crtc_state,
>>  	case PORT_D:
>>  	case PORT_E:
>>  	case PORT_F:
>> -		if (0 /* TODO: TBT PLLs */) {
>> +		if (intel_dig_port->tc_type == TC_PORT_TBT) {
>>  			min = DPLL_ID_ICL_TBTPLL;
>>  			max = min;
>>  			ret = icl_calc_dpll_state(crtc_state, encoder, clock,