On Mon, May 18, 2015 at 07:28:04PM +0300, Imre Deak wrote:
> On ke, 2015-05-13 at 12:20 +0530, Vandana Kannan wrote:
> > Making lane stagger calculation common for HDMI and DP
> >
> > v2: Imre's comments addressed
> > - Remove lane stagger from bxt_clk_div and make it a local variable in
> > ddi_pll_select
> >
> > Signed-off-by: Vandana Kannan <vandana.kan...@intel.com>
>
> Reviewed-by: Imre Deak <imre.d...@intel.com>
Both patches applied, thanks.
-Daniel
>
> > ---
> > drivers/gpu/drm/i915/intel_ddi.c | 40
> > ++++++++++++++++++++--------------------
> > 1 file changed, 20 insertions(+), 20 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_ddi.c
> > b/drivers/gpu/drm/i915/intel_ddi.c
> > index a56613c..aadd29e 100644
> > --- a/drivers/gpu/drm/i915/intel_ddi.c
> > +++ b/drivers/gpu/drm/i915/intel_ddi.c
> > @@ -1333,18 +1333,17 @@ struct bxt_clk_div {
> > uint32_t m2_frac;
> > bool m2_frac_en;
> > uint32_t n;
> > - uint32_t lanestagger;
> > };
> >
> > /* pre-calculated values for DP linkrates */
> > static struct bxt_clk_div bxt_dp_clk_val[7] = {
> > - /* 162 */ {4, 2, 32, 1677722, 1, 1, 0xd},
> > - /* 270 */ {4, 1, 27, 0, 0, 1, 0xd},
> > - /* 540 */ {2, 1, 27, 0, 0, 1, 0x18},
> > - /* 216 */ {3, 2, 32, 1677722, 1, 1, 0xd},
> > - /* 243 */ {4, 1, 24, 1258291, 1, 1, 0xd},
> > - /* 324 */ {4, 1, 32, 1677722, 1, 1, 0x18},
> > - /* 432 */ {3, 1, 32, 1677722, 1, 1, 0x18}
> > + /* 162 */ {4, 2, 32, 1677722, 1, 1},
> > + /* 270 */ {4, 1, 27, 0, 0, 1},
> > + /* 540 */ {2, 1, 27, 0, 0, 1},
> > + /* 216 */ {3, 2, 32, 1677722, 1, 1},
> > + /* 243 */ {4, 1, 24, 1258291, 1, 1},
> > + /* 324 */ {4, 1, 32, 1677722, 1, 1},
> > + /* 432 */ {3, 1, 32, 1677722, 1, 1}
> > };
> >
> > static bool
> > @@ -1357,7 +1356,7 @@ bxt_ddi_pll_select(struct intel_crtc *intel_crtc,
> > struct bxt_clk_div clk_div = {0};
> > int vco = 0;
> > uint32_t prop_coef, int_coef, gain_ctl, targ_cnt;
> > - uint32_t dcoampovr_en_h, dco_amp;
> > + uint32_t dcoampovr_en_h, dco_amp, lanestagger;
> >
> > if (intel_encoder->type == INTEL_OUTPUT_HDMI) {
> > intel_clock_t best_clock;
> > @@ -1382,16 +1381,6 @@ bxt_ddi_pll_select(struct intel_crtc *intel_crtc,
> > clk_div.m2_frac_en = clk_div.m2_frac != 0;
> >
> > vco = best_clock.vco;
> > - if (clock > 270000)
> > - clk_div.lanestagger = 0x18;
> > - else if (clock > 135000)
> > - clk_div.lanestagger = 0x0d;
> > - else if (clock > 67000)
> > - clk_div.lanestagger = 0x07;
> > - else if (clock > 33000)
> > - clk_div.lanestagger = 0x04;
> > - else
> > - clk_div.lanestagger = 0x02;
> > } else if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT ||
> > intel_encoder->type == INTEL_OUTPUT_EDP) {
> > struct drm_encoder *encoder = &intel_encoder->base;
> > @@ -1439,6 +1428,17 @@ bxt_ddi_pll_select(struct intel_crtc *intel_crtc,
> > return false;
> > }
> >
> > + if (clock > 270000)
> > + lanestagger = 0x18;
> > + else if (clock > 135000)
> > + lanestagger = 0x0d;
> > + else if (clock > 67000)
> > + lanestagger = 0x07;
> > + else if (clock > 33000)
> > + lanestagger = 0x04;
> > + else
> > + lanestagger = 0x02;
> > +
> > crtc_state->dpll_hw_state.ebb0 =
> > PORT_PLL_P1(clk_div.p1) | PORT_PLL_P2(clk_div.p2);
> > crtc_state->dpll_hw_state.pll0 = clk_div.m2_int;
> > @@ -1462,7 +1462,7 @@ bxt_ddi_pll_select(struct intel_crtc *intel_crtc,
> > crtc_state->dpll_hw_state.pll10 |= PORT_PLL_DCO_AMP(dco_amp);
> >
> > crtc_state->dpll_hw_state.pcsdw12 =
> > - LANESTAGGER_STRAP_OVRD | clk_div.lanestagger;
> > + LANESTAGGER_STRAP_OVRD | lanestagger;
> >
> > pll = intel_get_shared_dpll(intel_crtc, crtc_state);
> > if (pll == NULL) {
>
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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