[Intel-gfx] [PATCH v3 07/17] drm/i915: Feed the DPLL output freq back into crtc_state
Ville Syrjala
ville.syrjala at linux.intel.com
Mon Jun 20 17:52:00 UTC 2022
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
Fill port_clock and hw.adjusted_mode.crtc_clock with the actual
frequency we're going to be getting from the hardware. This will
let us accurately compute all derived state that depends on those.
v2: Reintroduce iCLKIP WARN
v3: Try to deal with VLV/BXT DSI PLL as well
Reviewed-by: Jani Nikula <jani.nikula at intel.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_crt.c | 3 +
drivers/gpu/drm/i915/display/intel_dpll.c | 60 ++++++++++++++++++-
drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 24 +++++++-
.../gpu/drm/i915/display/intel_pch_refclk.c | 10 ++++
.../gpu/drm/i915/display/intel_pch_refclk.h | 1 +
drivers/gpu/drm/i915/display/vlv_dsi.c | 11 ++--
drivers/gpu/drm/i915/display/vlv_dsi_pll.c | 20 ++++++-
7 files changed, 117 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_crt.c b/drivers/gpu/drm/i915/display/intel_crt.c
index 6a3893c8ff22..a225af030ad7 100644
--- a/drivers/gpu/drm/i915/display/intel_crt.c
+++ b/drivers/gpu/drm/i915/display/intel_crt.c
@@ -46,6 +46,7 @@
#include "intel_gmbus.h"
#include "intel_hotplug.h"
#include "intel_pch_display.h"
+#include "intel_pch_refclk.h"
/* Here's the desired hotplug mode */
#define ADPA_HOTPLUG_BITS (ADPA_CRT_HOTPLUG_PERIOD_128 | \
@@ -444,6 +445,8 @@ static int hsw_crt_compute_config(struct intel_encoder *encoder,
/* FDI must always be 2.7 GHz */
pipe_config->port_clock = 135000 * 2;
+ adjusted_mode->crtc_clock = lpt_iclkip(pipe_config);
+
return 0;
}
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
index 69dc018385db..cffce8b86d64 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -938,12 +938,25 @@ static int hsw_crtc_compute_clock(struct intel_atomic_state *state,
intel_atomic_get_new_crtc_state(state, crtc);
struct intel_encoder *encoder =
intel_get_crtc_new_encoder(state, crtc_state);
+ int ret;
if (DISPLAY_VER(dev_priv) < 11 &&
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
return 0;
- return intel_compute_shared_dplls(state, crtc, encoder);
+ ret = intel_compute_shared_dplls(state, crtc, encoder);
+ if (ret)
+ return ret;
+
+ /* FIXME this is a mess */
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+ return 0;
+
+ /* CRT dotclock is determined via other means */
+ if (!crtc_state->has_pch_encoder)
+ crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+ return 0;
}
static int hsw_crtc_get_shared_dpll(struct intel_atomic_state *state,
@@ -969,8 +982,15 @@ static int dg2_crtc_compute_clock(struct intel_atomic_state *state,
intel_atomic_get_new_crtc_state(state, crtc);
struct intel_encoder *encoder =
intel_get_crtc_new_encoder(state, crtc_state);
+ int ret;
- return intel_mpllb_calc_state(crtc_state, encoder);
+ ret = intel_mpllb_calc_state(crtc_state, encoder);
+ if (ret)
+ return ret;
+
+ crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+ return 0;
}
static bool ilk_needs_fb_cb_tune(const struct dpll *dpll, int factor)
@@ -1096,6 +1116,7 @@ static int ilk_crtc_compute_clock(struct intel_atomic_state *state,
intel_atomic_get_new_crtc_state(state, crtc);
const struct intel_limit *limit;
int refclk = 120000;
+ int ret;
/* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
if (!crtc_state->has_pch_encoder)
@@ -1132,7 +1153,14 @@ static int ilk_crtc_compute_clock(struct intel_atomic_state *state,
ilk_compute_dpll(crtc_state, &crtc_state->dpll,
&crtc_state->dpll);
- return intel_compute_shared_dplls(state, crtc, NULL);
+ ret = intel_compute_shared_dplls(state, crtc, NULL);
+ if (ret)
+ return ret;
+
+ crtc_state->port_clock = crtc_state->dpll.dot;
+ crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+ return ret;
}
static int ilk_crtc_get_shared_dpll(struct intel_atomic_state *state,
@@ -1198,6 +1226,13 @@ static int chv_crtc_compute_clock(struct intel_atomic_state *state,
chv_compute_dpll(crtc_state);
+ /* FIXME this is a mess */
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+ return 0;
+
+ crtc_state->port_clock = crtc_state->dpll.dot;
+ crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
return 0;
}
@@ -1217,6 +1252,13 @@ static int vlv_crtc_compute_clock(struct intel_atomic_state *state,
vlv_compute_dpll(crtc_state);
+ /* FIXME this is a mess */
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+ return 0;
+
+ crtc_state->port_clock = crtc_state->dpll.dot;
+ crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
return 0;
}
@@ -1259,6 +1301,9 @@ static int g4x_crtc_compute_clock(struct intel_atomic_state *state,
i9xx_compute_dpll(crtc_state, &crtc_state->dpll,
&crtc_state->dpll);
+ crtc_state->port_clock = crtc_state->dpll.dot;
+ crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
return 0;
}
@@ -1292,6 +1337,9 @@ static int pnv_crtc_compute_clock(struct intel_atomic_state *state,
i9xx_compute_dpll(crtc_state, &crtc_state->dpll,
&crtc_state->dpll);
+ crtc_state->port_clock = crtc_state->dpll.dot;
+ crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
return 0;
}
@@ -1325,6 +1373,9 @@ static int i9xx_crtc_compute_clock(struct intel_atomic_state *state,
i9xx_compute_dpll(crtc_state, &crtc_state->dpll,
&crtc_state->dpll);
+ crtc_state->port_clock = crtc_state->dpll.dot;
+ crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
return 0;
}
@@ -1360,6 +1411,9 @@ static int i8xx_crtc_compute_clock(struct intel_atomic_state *state,
i8xx_compute_dpll(crtc_state, &crtc_state->dpll,
&crtc_state->dpll);
+ crtc_state->port_clock = crtc_state->dpll.dot;
+ crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
return 0;
}
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index bfccc96f16fe..09816526c5e4 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -949,6 +949,7 @@ static int
hsw_ddi_wrpll_compute_dpll(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
+ struct drm_i915_private *i915 = to_i915(state->base.dev);
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
unsigned int p, n2, r2;
@@ -960,6 +961,9 @@ hsw_ddi_wrpll_compute_dpll(struct intel_atomic_state *state,
WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) |
WRPLL_DIVIDER_POST(p);
+ crtc_state->port_clock = hsw_ddi_wrpll_get_freq(i915, NULL,
+ &crtc_state->dpll_hw_state);
+
return 0;
}
@@ -1723,6 +1727,9 @@ static int skl_ddi_hdmi_pll_dividers(struct intel_crtc_state *crtc_state)
crtc_state->dpll_hw_state.cfgcr1 = cfgcr1;
crtc_state->dpll_hw_state.cfgcr2 = cfgcr2;
+ crtc_state->port_clock = skl_ddi_wrpll_get_freq(i915, NULL,
+ &crtc_state->dpll_hw_state);
+
return 0;
}
@@ -2275,11 +2282,20 @@ bxt_ddi_dp_set_dpll_hw_state(struct intel_crtc_state *crtc_state)
static int
bxt_ddi_hdmi_set_dpll_hw_state(struct intel_crtc_state *crtc_state)
{
+ struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
struct dpll clk_div = {};
+ int ret;
bxt_ddi_hdmi_pll_dividers(crtc_state, &clk_div);
- return bxt_ddi_set_dpll_hw_state(crtc_state, &clk_div);
+ ret = bxt_ddi_set_dpll_hw_state(crtc_state, &clk_div);
+ if (ret)
+ return ret;
+
+ crtc_state->port_clock = bxt_ddi_pll_get_freq(i915, NULL,
+ &crtc_state->dpll_hw_state);
+
+ return 0;
}
static int bxt_compute_dpll(struct intel_atomic_state *state,
@@ -3197,6 +3213,9 @@ static int icl_compute_combo_phy_dpll(struct intel_atomic_state *state,
icl_calc_dpll_state(dev_priv, &pll_params, &port_dpll->hw_state);
+ crtc_state->port_clock = icl_ddi_combo_pll_get_freq(dev_priv, NULL,
+ &port_dpll->hw_state);
+
return 0;
}
@@ -3282,6 +3301,9 @@ static int icl_compute_tc_phy_dplls(struct intel_atomic_state *state,
if (ret)
return ret;
+ crtc_state->port_clock = icl_ddi_mg_pll_get_freq(dev_priv, NULL,
+ &port_dpll->hw_state);
+
return 0;
}
diff --git a/drivers/gpu/drm/i915/display/intel_pch_refclk.c b/drivers/gpu/drm/i915/display/intel_pch_refclk.c
index 9934c8a9e240..55dfd37cb04e 100644
--- a/drivers/gpu/drm/i915/display/intel_pch_refclk.c
+++ b/drivers/gpu/drm/i915/display/intel_pch_refclk.c
@@ -167,6 +167,15 @@ static void lpt_compute_iclkip(struct iclkip_params *p, int clock)
}
}
+int lpt_iclkip(const struct intel_crtc_state *crtc_state)
+{
+ struct iclkip_params p;
+
+ lpt_compute_iclkip(&p, crtc_state->hw.adjusted_mode.crtc_clock);
+
+ return lpt_iclkip_freq(&p);
+}
+
/* Program iCLKIP clock to the desired frequency */
void lpt_program_iclkip(const struct intel_crtc_state *crtc_state)
{
@@ -179,6 +188,7 @@ void lpt_program_iclkip(const struct intel_crtc_state *crtc_state)
lpt_disable_iclkip(dev_priv);
lpt_compute_iclkip(&p, clock);
+ drm_WARN_ON(&dev_priv->drm, lpt_iclkip_freq(&p) != clock);
/* This should not happen with any sane values */
drm_WARN_ON(&dev_priv->drm, SBI_SSCDIVINTPHASE_DIVSEL(p.divsel) &
diff --git a/drivers/gpu/drm/i915/display/intel_pch_refclk.h b/drivers/gpu/drm/i915/display/intel_pch_refclk.h
index 12ab2c75a800..9bcf56629f24 100644
--- a/drivers/gpu/drm/i915/display/intel_pch_refclk.h
+++ b/drivers/gpu/drm/i915/display/intel_pch_refclk.h
@@ -14,6 +14,7 @@ struct intel_crtc_state;
void lpt_program_iclkip(const struct intel_crtc_state *crtc_state);
void lpt_disable_iclkip(struct drm_i915_private *dev_priv);
int lpt_get_iclkip(struct drm_i915_private *dev_priv);
+int lpt_iclkip(const struct intel_crtc_state *crtc_state);
void intel_init_pch_refclk(struct drm_i915_private *dev_priv);
void lpt_disable_clkout_dp(struct drm_i915_private *dev_priv);
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c
index b9b1fed99874..b3faa12e08cf 100644
--- a/drivers/gpu/drm/i915/display/vlv_dsi.c
+++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
@@ -1277,13 +1277,12 @@ static void intel_dsi_get_config(struct intel_encoder *encoder,
pclk = vlv_dsi_get_pclk(encoder, pipe_config);
}
+ pipe_config->port_clock = pclk;
+
+ /* FIXME definitely not right for burst/cmd mode/pixel overlap */
+ pipe_config->hw.adjusted_mode.crtc_clock = pclk;
if (intel_dsi->dual_link)
- pclk *= 2;
-
- if (pclk) {
- pipe_config->hw.adjusted_mode.crtc_clock = pclk;
- pipe_config->port_clock = pclk;
- }
+ pipe_config->hw.adjusted_mode.crtc_clock *= 2;
}
/* return txclkesc cycles in terms of divider and duration in us */
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi_pll.c b/drivers/gpu/drm/i915/display/vlv_dsi_pll.c
index 2606dbf09ccc..af7402127cd9 100644
--- a/drivers/gpu/drm/i915/display/vlv_dsi_pll.c
+++ b/drivers/gpu/drm/i915/display/vlv_dsi_pll.c
@@ -177,8 +177,7 @@ int vlv_dsi_pll_compute(struct intel_encoder *encoder,
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
- int ret;
- u32 dsi_clk;
+ int pclk, dsi_clk, ret;
dsi_clk = dsi_clk_from_pclk(intel_dsi->pclk, intel_dsi->pixel_format,
intel_dsi->lane_count);
@@ -200,6 +199,14 @@ int vlv_dsi_pll_compute(struct intel_encoder *encoder,
drm_dbg_kms(&dev_priv->drm, "dsi pll div %08x, ctrl %08x\n",
config->dsi_pll.div, config->dsi_pll.ctrl);
+ pclk = vlv_dsi_pclk(encoder, config);
+ config->port_clock = pclk;
+
+ /* FIXME definitely not right for burst/cmd mode/pixel overlap */
+ config->hw.adjusted_mode.crtc_clock = pclk;
+ if (intel_dsi->dual_link)
+ config->hw.adjusted_mode.crtc_clock *= 2;
+
return 0;
}
@@ -478,6 +485,7 @@ int bxt_dsi_pll_compute(struct intel_encoder *encoder,
struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
u8 dsi_ratio, dsi_ratio_min, dsi_ratio_max;
u32 dsi_clk;
+ int pclk;
dsi_clk = dsi_clk_from_pclk(intel_dsi->pclk, intel_dsi->pixel_format,
intel_dsi->lane_count);
@@ -517,6 +525,14 @@ int bxt_dsi_pll_compute(struct intel_encoder *encoder,
if (IS_BROXTON(dev_priv) && dsi_ratio <= 50)
config->dsi_pll.ctrl |= BXT_DSI_PLL_PVD_RATIO_1;
+ pclk = bxt_dsi_pclk(encoder, config);
+ config->port_clock = pclk;
+
+ /* FIXME definitely not right for burst/cmd mode/pixel overlap */
+ config->hw.adjusted_mode.crtc_clock = pclk;
+ if (intel_dsi->dual_link)
+ config->hw.adjusted_mode.crtc_clock *= 2;
+
return 0;
}
--
2.35.1
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