[v2,2/2] drm/i915/bxt: Move around lane stagger calculation

Message ID	1431499835-24704-1-git-send-email-vandana.kannan@intel.com (mailing list archive)
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Headers	show Return-Path: <intel-gfx-bounces@lists.freedesktop.org> From: Vandana Kannan <vandana.kannan@intel.com> To: intel-gfx@lists.freedesktop.org Date: Wed, 13 May 2015 12:20:35 +0530 Message-Id: <1431499835-24704-1-git-send-email-vandana.kannan@intel.com> In-Reply-To: <1431004070.8610.20.camel@intel.com> References: <1431004070.8610.20.camel@intel.com> Subject: [Intel-gfx] [PATCH v2 2/2] drm/i915/bxt: Move around lane stagger calculation Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>

Message ID

1431499835-24704-1-git-send-email-vandana.kannan@intel.com (mailing list archive)

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New, archived

Headers

From: Vandana Kannan <vandana.kannan@intel.com>
To: intel-gfx@lists.freedesktop.org
Date: Wed, 13 May 2015 12:20:35 +0530
Message-Id: <1431499835-24704-1-git-send-email-vandana.kannan@intel.com>
In-Reply-To: <1431004070.8610.20.camel@intel.com>
References: <1431004070.8610.20.camel@intel.com>
Subject: [Intel-gfx] [PATCH v2 2/2] drm/i915/bxt: Move around lane stagger
	calculation
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Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>

Commit Message

vandana.kannan@intel.com May 13, 2015, 6:50 a.m. UTC

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.kannan@intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c | 40 ++++++++++++++++++++--------------------
 1 file changed, 20 insertions(+), 20 deletions(-)

Comments

Imre Deak May 18, 2015, 4:28 p.m. UTC | #1

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.kannan@intel.com>

Reviewed-by: Imre Deak <imre.deak@intel.com>

> ---
>  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) {

Daniel Vetter May 19, 2015, 8:04 a.m. UTC | #2

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.kannan@intel.com>
> 
> Reviewed-by: Imre Deak <imre.deak@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) {
> 
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

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) {

[v2,2/2] drm/i915/bxt: Move around lane stagger calculation

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