diff options
author | Jani Nikula <jani.nikula@intel.com> | 2021-09-01 19:10:04 +0300 |
---|---|---|
committer | Jani Nikula <jani.nikula@intel.com> | 2021-09-07 10:29:21 +0300 |
commit | dab8477b032b31d07cf6ed5a07d47709c265b4bc (patch) | |
tree | b379475d595c3784eb7bc401db93199d6046a3c5 /drivers/gpu/drm/i915/display/intel_bios.c | |
parent | drm/i915/bios: move ddc pin mapping code next to ddc pin sanitize (diff) | |
download | linux-dev-dab8477b032b31d07cf6ed5a07d47709c265b4bc.tar.xz linux-dev-dab8477b032b31d07cf6ed5a07d47709c265b4bc.zip |
drm/i915/bios: use ddc pin directly from child data
Avoid extra caching of the data. This is slightly more subtle than one
would think. For one thing, we explicitly ignore 0 value in child device
ddc pin; this is specified as N/A and does not warrant a warning. For
another, we start looking for ddc pin collisions in sanitize using
unmapped pin numbering.
v2: Check !devdata in intel_bios_alternate_ddc_pin()
Cc: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/e1dbf7cbdd2191439e760ab9098242dcec5fbb2e.1630512523.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_bios.c')
-rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 49 |
1 files changed, 28 insertions, 21 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index b4113506b3b8..0c16a848a6e4 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -1589,28 +1589,43 @@ static enum port get_port_by_ddc_pin(struct drm_i915_private *i915, u8 ddc_pin) for_each_port(port) { info = &i915->vbt.ddi_port_info[port]; - if (info->devdata && ddc_pin == info->alternate_ddc_pin) + if (info->devdata && ddc_pin == info->devdata->child.ddc_pin) return port; } return PORT_NONE; } -static void sanitize_ddc_pin(struct drm_i915_private *i915, +static void sanitize_ddc_pin(struct intel_bios_encoder_data *devdata, enum port port) { - struct ddi_vbt_port_info *info = &i915->vbt.ddi_port_info[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; - p = get_port_by_ddc_pin(i915, info->alternate_ddc_pin); + if (!devdata->child.ddc_pin) + return; + + mapped_ddc_pin = map_ddc_pin(i915, devdata->child.ddc_pin); + if (!intel_gmbus_is_valid_pin(i915, mapped_ddc_pin)) { + drm_dbg_kms(&i915->drm, + "Port %c has invalid DDC pin %d, " + "sticking to defaults\n", + port_name(port), mapped_ddc_pin); + devdata->child.ddc_pin = 0; + return; + } + + p = get_port_by_ddc_pin(i915, devdata->child.ddc_pin); if (p == PORT_NONE) return; drm_dbg_kms(&i915->drm, "port %c trying to use the same DDC pin (0x%x) as port %c, " "disabling port %c DVI/HDMI support\n", - port_name(port), info->alternate_ddc_pin, + port_name(port), mapped_ddc_pin, port_name(p), port_name(p)); /* @@ -1628,7 +1643,7 @@ static void sanitize_ddc_pin(struct drm_i915_private *i915, child->device_type &= ~DEVICE_TYPE_TMDS_DVI_SIGNALING; child->device_type |= DEVICE_TYPE_NOT_HDMI_OUTPUT; - info->alternate_ddc_pin = 0; + child->ddc_pin = 0; } static enum port get_port_by_aux_ch(struct drm_i915_private *i915, u8 aux_ch) @@ -1966,20 +1981,8 @@ static void parse_ddi_port(struct drm_i915_private *i915, supports_typec_usb, supports_tbt, devdata->dsc != NULL); - if (is_dvi) { - u8 ddc_pin; - - ddc_pin = map_ddc_pin(i915, child->ddc_pin); - if (intel_gmbus_is_valid_pin(i915, ddc_pin)) { - info->alternate_ddc_pin = ddc_pin; - sanitize_ddc_pin(i915, port); - } else { - drm_dbg_kms(&i915->drm, - "Port %c has invalid DDC pin %d, " - "sticking to defaults\n", - port_name(port), ddc_pin); - } - } + if (is_dvi) + sanitize_ddc_pin(devdata, port); if (is_dp) sanitize_aux_ch(devdata, port); @@ -2993,8 +2996,12 @@ 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; + + if (!devdata || !devdata->child.ddc_pin) + return 0; - return i915->vbt.ddi_port_info[encoder->port].alternate_ddc_pin; + return map_ddc_pin(i915, devdata->child.ddc_pin); } bool intel_bios_encoder_supports_typec_usb(const struct intel_bios_encoder_data *devdata) |