Re: [PATCH v2 7/7] drm/i915/bios: get rid of vbt ddi_port_info

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LGTM.

Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx>

On 9/1/2021 9:40 PM, Jani Nikula wrote:
We can finally remove the extra caching in ddi_port_info. Good riddance.

v2: Rebased

Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
  drivers/gpu/drm/i915/display/intel_bios.c | 63 +++++++++--------------
  drivers/gpu/drm/i915/i915_drv.h           |  7 +--
  2 files changed, 25 insertions(+), 45 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 0c16a848a6e4..052f27c0fb0c 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -1580,16 +1580,16 @@ static u8 map_ddc_pin(struct drm_i915_private *i915, u8 vbt_pin)
static enum port get_port_by_ddc_pin(struct drm_i915_private *i915, u8 ddc_pin)
  {
-	const struct ddi_vbt_port_info *info;
+	const struct intel_bios_encoder_data *devdata;
  	enum port port;
if (!ddc_pin)
  		return PORT_NONE;
for_each_port(port) {
-		info = &i915->vbt.ddi_port_info[port];
+		devdata = i915->vbt.ports[port];
- if (info->devdata && ddc_pin == info->devdata->child.ddc_pin)
+		if (devdata && ddc_pin == devdata->child.ddc_pin)
  			return port;
  	}
@@ -1600,7 +1600,6 @@ static void sanitize_ddc_pin(struct intel_bios_encoder_data *devdata,
  			     enum port port)
  {
  	struct drm_i915_private *i915 = devdata->i915;
-	struct ddi_vbt_port_info *info;
  	struct child_device_config *child;
  	u8 mapped_ddc_pin;
  	enum port p;
@@ -1637,8 +1636,7 @@ static void sanitize_ddc_pin(struct intel_bios_encoder_data *devdata,
  	 * there are real machines (eg. Asrock B250M-HDV) where VBT has both
  	 * port A and port E with the same AUX ch and we must pick port E :(
  	 */
-	info = &i915->vbt.ddi_port_info[p];
-	child = &info->devdata->child;
+	child = &i915->vbt.ports[p]->child;
child->device_type &= ~DEVICE_TYPE_TMDS_DVI_SIGNALING;
  	child->device_type |= DEVICE_TYPE_NOT_HDMI_OUTPUT;
@@ -1648,16 +1646,16 @@ static void sanitize_ddc_pin(struct intel_bios_encoder_data *devdata,
static enum port get_port_by_aux_ch(struct drm_i915_private *i915, u8 aux_ch)
  {
-	const struct ddi_vbt_port_info *info;
+	const struct intel_bios_encoder_data *devdata;
  	enum port port;
if (!aux_ch)
  		return PORT_NONE;
for_each_port(port) {
-		info = &i915->vbt.ddi_port_info[port];
+		devdata = i915->vbt.ports[port];
- if (info->devdata && aux_ch == info->devdata->child.aux_channel)
+		if (devdata && aux_ch == devdata->child.aux_channel)
  			return port;
  	}
@@ -1668,7 +1666,6 @@ static void sanitize_aux_ch(struct intel_bios_encoder_data *devdata,
  			    enum port port)
  {
  	struct drm_i915_private *i915 = devdata->i915;
-	struct ddi_vbt_port_info *info;
  	struct child_device_config *child;
  	enum port p;
@@ -1691,8 +1688,7 @@ static void sanitize_aux_ch(struct intel_bios_encoder_data *devdata,
  	 * there are real machines (eg. Asrock B250M-HDV) where VBT has both
  	 * port A and port E with the same AUX ch and we must pick port E :(
  	 */
-	info = &i915->vbt.ddi_port_info[p];
-	child = &info->devdata->child;
+	child = &i915->vbt.ports[p]->child;
child->device_type &= ~DEVICE_TYPE_DISPLAYPORT_OUTPUT;
  	child->aux_channel = 0;
@@ -1938,7 +1934,6 @@ static void parse_ddi_port(struct drm_i915_private *i915,
  			   struct intel_bios_encoder_data *devdata)
  {
  	const struct child_device_config *child = &devdata->child;
-	struct ddi_vbt_port_info *info;
  	bool is_dvi, is_hdmi, is_dp, is_edp, is_crt, supports_typec_usb, supports_tbt;
  	int dp_boost_level, dp_max_link_rate, hdmi_boost_level, hdmi_level_shift, max_tmds_clock;
  	enum port port;
@@ -1954,9 +1949,7 @@ static void parse_ddi_port(struct drm_i915_private *i915,
  		return;
  	}
- info = &i915->vbt.ddi_port_info[port];
-
-	if (info->devdata) {
+	if (i915->vbt.ports[port]) {
  		drm_dbg_kms(&i915->drm,
  			    "More than one child device for port %c in VBT, using the first.\n",
  			    port_name(port));
@@ -2019,7 +2012,7 @@ static void parse_ddi_port(struct drm_i915_private *i915,
  			    "Port %c VBT DP max link rate: %d\n",
  			    port_name(port), dp_max_link_rate);
- info->devdata = devdata;
+	i915->vbt.ports[port] = devdata;
  }
static void parse_ddi_ports(struct drm_i915_private *i915)
@@ -2557,12 +2550,8 @@ bool intel_bios_is_port_present(struct drm_i915_private *i915, enum port port)
  		[PORT_F] = { DVO_PORT_DPF, DVO_PORT_HDMIF, },
  	};
- if (HAS_DDI(i915)) {
-		const struct ddi_vbt_port_info *port_info =
-			&i915->vbt.ddi_port_info[port];
-
-		return port_info->devdata;
-	}
+	if (HAS_DDI(i915))
+		return i915->vbt.ports[port];
/* FIXME maybe deal with port A as well? */
  	if (drm_WARN_ON(&i915->drm,
@@ -2813,8 +2802,7 @@ bool
  intel_bios_is_port_hpd_inverted(const struct drm_i915_private *i915,
  				enum port port)
  {
-	const struct intel_bios_encoder_data *devdata =
-		i915->vbt.ddi_port_info[port].devdata;
+	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[port];
if (drm_WARN_ON_ONCE(&i915->drm,
  			     !IS_GEMINILAKE(i915) && !IS_BROXTON(i915)))
@@ -2834,8 +2822,7 @@ bool
  intel_bios_is_lspcon_present(const struct drm_i915_private *i915,
  			     enum port port)
  {
-	const struct intel_bios_encoder_data *devdata =
-		i915->vbt.ddi_port_info[port].devdata;
+	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[port];
return HAS_LSPCON(i915) && devdata && devdata->child.lspcon;
  }
@@ -2851,8 +2838,7 @@ bool
  intel_bios_is_lane_reversal_needed(const struct drm_i915_private *i915,
  				   enum port port)
  {
-	const struct intel_bios_encoder_data *devdata =
-		i915->vbt.ddi_port_info[port].devdata;
+	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[port];
return devdata && devdata->child.lane_reversal;
  }
@@ -2860,11 +2846,10 @@ intel_bios_is_lane_reversal_needed(const struct drm_i915_private *i915,
  enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *i915,
  				   enum port port)
  {
-	const struct ddi_vbt_port_info *info =
-		&i915->vbt.ddi_port_info[port];
+	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[port];
  	enum aux_ch aux_ch;
- if (!info->devdata || !info->devdata->child.aux_channel) {
+	if (!devdata || !devdata->child.aux_channel) {
  		aux_ch = (enum aux_ch)port;
drm_dbg_kms(&i915->drm,
@@ -2880,7 +2865,7 @@ enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *i915,
  	 * ADL-S VBT uses PHY based mapping. Combo PHYs A,B,C,D,E
  	 * map to DDI A,TC1,TC2,TC3,TC4 respectively.
  	 */
-	switch (info->devdata->child.aux_channel) {
+	switch (devdata->child.aux_channel) {
  	case DP_AUX_A:
  		aux_ch = AUX_CH_A;
  		break;
@@ -2941,7 +2926,7 @@ enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *i915,
  			aux_ch = AUX_CH_I;
  		break;
  	default:
-		MISSING_CASE(info->devdata->child.aux_channel);
+		MISSING_CASE(devdata->child.aux_channel);
  		aux_ch = AUX_CH_A;
  		break;
  	}
@@ -2955,7 +2940,7 @@ enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *i915,
  int intel_bios_max_tmds_clock(struct intel_encoder *encoder)
  {
  	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ddi_port_info[encoder->port].devdata;
+	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[encoder->port];
return _intel_bios_max_tmds_clock(devdata);
  }
@@ -2964,7 +2949,7 @@ int intel_bios_max_tmds_clock(struct intel_encoder *encoder)
  int intel_bios_hdmi_level_shift(struct intel_encoder *encoder)
  {
  	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ddi_port_info[encoder->port].devdata;
+	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[encoder->port];
return _intel_bios_hdmi_level_shift(devdata);
  }
@@ -2988,7 +2973,7 @@ int intel_bios_encoder_hdmi_boost_level(const struct intel_bios_encoder_data *de
  int intel_bios_dp_max_link_rate(struct intel_encoder *encoder)
  {
  	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ddi_port_info[encoder->port].devdata;
+	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[encoder->port];
return _intel_bios_dp_max_link_rate(devdata);
  }
@@ -2996,7 +2981,7 @@ int intel_bios_dp_max_link_rate(struct intel_encoder *encoder)
  int intel_bios_alternate_ddc_pin(struct intel_encoder *encoder)
  {
  	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ddi_port_info[encoder->port].devdata;
+	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[encoder->port];
if (!devdata || !devdata->child.ddc_pin)
  		return 0;
@@ -3017,5 +3002,5 @@ bool intel_bios_encoder_supports_tbt(const struct intel_bios_encoder_data *devda
  const struct intel_bios_encoder_data *
  intel_bios_encoder_data_lookup(struct drm_i915_private *i915, enum port port)
  {
-	return i915->vbt.ddi_port_info[port].devdata;
+	return i915->vbt.ports[port];
  }
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 744181cbe21c..309a483d1722 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -635,11 +635,6 @@ i915_fence_timeout(const struct drm_i915_private *i915)
  /* Amount of PSF GV points, BSpec precisely defines this */
  #define I915_NUM_PSF_GV_POINTS 3
-struct ddi_vbt_port_info {
-	/* Non-NULL if port present. */
-	struct intel_bios_encoder_data *devdata;
-};
-
  enum psr_lines_to_wait {
  	PSR_0_LINES_TO_WAIT = 0,
  	PSR_1_LINE_TO_WAIT,
@@ -720,7 +715,7 @@ struct intel_vbt_data {
struct list_head display_devices; - struct ddi_vbt_port_info ddi_port_info[I915_MAX_PORTS];
+	struct intel_bios_encoder_data *ports[I915_MAX_PORTS]; /* Non-NULL if port present. */
  	struct sdvo_device_mapping sdvo_mappings[2];
  };



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