diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 224 |
1 files changed, 189 insertions, 35 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index bf62a19c8f69..9c406b0f4173 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -29,7 +29,9 @@ #include <drm/drmP.h> #include <drm/i915_drm.h> #include "i915_drv.h" -#include "intel_bios.h" + +#define _INTEL_BIOS_PRIVATE +#include "intel_vbt_defs.h" /** * DOC: Video BIOS Table (VBT) @@ -480,7 +482,7 @@ parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, child->slave_addr, (child->dvo_port == DEVICE_PORT_DVOB) ? "SDVOB" : "SDVOC"); - p_mapping = &(dev_priv->sdvo_mappings[child->dvo_port - 1]); + p_mapping = &dev_priv->vbt.sdvo_mappings[child->dvo_port - 1]; if (!p_mapping->initialized) { p_mapping->dvo_port = child->dvo_port; p_mapping->slave_addr = child->slave_addr; @@ -525,10 +527,7 @@ parse_driver_features(struct drm_i915_private *dev_priv, return; if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP) - dev_priv->vbt.edp_support = 1; - - if (driver->dual_frequency) - dev_priv->render_reclock_avail = true; + dev_priv->vbt.edp.support = 1; DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled); /* @@ -550,20 +549,20 @@ parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) edp = find_section(bdb, BDB_EDP); if (!edp) { - if (dev_priv->vbt.edp_support) + if (dev_priv->vbt.edp.support) DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n"); return; } switch ((edp->color_depth >> (panel_type * 2)) & 3) { case EDP_18BPP: - dev_priv->vbt.edp_bpp = 18; + dev_priv->vbt.edp.bpp = 18; break; case EDP_24BPP: - dev_priv->vbt.edp_bpp = 24; + dev_priv->vbt.edp.bpp = 24; break; case EDP_30BPP: - dev_priv->vbt.edp_bpp = 30; + dev_priv->vbt.edp.bpp = 30; break; } @@ -571,14 +570,14 @@ parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) edp_pps = &edp->power_seqs[panel_type]; edp_link_params = &edp->link_params[panel_type]; - dev_priv->vbt.edp_pps = *edp_pps; + dev_priv->vbt.edp.pps = *edp_pps; switch (edp_link_params->rate) { case EDP_RATE_1_62: - dev_priv->vbt.edp_rate = DP_LINK_BW_1_62; + dev_priv->vbt.edp.rate = DP_LINK_BW_1_62; break; case EDP_RATE_2_7: - dev_priv->vbt.edp_rate = DP_LINK_BW_2_7; + dev_priv->vbt.edp.rate = DP_LINK_BW_2_7; break; default: DRM_DEBUG_KMS("VBT has unknown eDP link rate value %u\n", @@ -588,13 +587,13 @@ parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) switch (edp_link_params->lanes) { case EDP_LANE_1: - dev_priv->vbt.edp_lanes = 1; + dev_priv->vbt.edp.lanes = 1; break; case EDP_LANE_2: - dev_priv->vbt.edp_lanes = 2; + dev_priv->vbt.edp.lanes = 2; break; case EDP_LANE_4: - dev_priv->vbt.edp_lanes = 4; + dev_priv->vbt.edp.lanes = 4; break; default: DRM_DEBUG_KMS("VBT has unknown eDP lane count value %u\n", @@ -604,16 +603,16 @@ parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) switch (edp_link_params->preemphasis) { case EDP_PREEMPHASIS_NONE: - dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0; + dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0; break; case EDP_PREEMPHASIS_3_5dB: - dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1; + dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1; break; case EDP_PREEMPHASIS_6dB: - dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2; + dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2; break; case EDP_PREEMPHASIS_9_5dB: - dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3; + dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3; break; default: DRM_DEBUG_KMS("VBT has unknown eDP pre-emphasis value %u\n", @@ -623,16 +622,16 @@ parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) switch (edp_link_params->vswing) { case EDP_VSWING_0_4V: - dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0; + dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0; break; case EDP_VSWING_0_6V: - dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1; + dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1; break; case EDP_VSWING_0_8V: - dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2; + dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2; break; case EDP_VSWING_1_2V: - dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3; + dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3; break; default: DRM_DEBUG_KMS("VBT has unknown eDP voltage swing value %u\n", @@ -645,10 +644,10 @@ parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) /* Don't read from VBT if module parameter has valid value*/ if (i915.edp_vswing) { - dev_priv->edp_low_vswing = i915.edp_vswing == 1; + dev_priv->vbt.edp.low_vswing = i915.edp_vswing == 1; } else { vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF; - dev_priv->edp_low_vswing = vswing == 0; + dev_priv->vbt.edp.low_vswing = vswing == 0; } } } @@ -706,7 +705,7 @@ parse_mipi_config(struct drm_i915_private *dev_priv, const struct mipi_pps_data *pps; /* parse MIPI blocks only if LFP type is MIPI */ - if (!dev_priv->vbt.has_mipi) + if (!intel_bios_is_dsi_present(dev_priv, NULL)) return; /* Initialize this to undefined indicating no generic MIPI support */ @@ -1232,14 +1231,6 @@ parse_device_mapping(struct drm_i915_private *dev_priv, continue; } - if (p_child->common.dvo_port >= DVO_PORT_MIPIA - && p_child->common.dvo_port <= DVO_PORT_MIPID - &&p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT) { - DRM_DEBUG_KMS("Found MIPI as LFP\n"); - dev_priv->vbt.has_mipi = 1; - dev_priv->vbt.dsi.port = p_child->common.dvo_port; - } - child_dev_ptr = dev_priv->vbt.child_dev + count; count++; @@ -1431,3 +1422,166 @@ intel_bios_init(struct drm_i915_private *dev_priv) return 0; } + +/** + * intel_bios_is_tv_present - is integrated TV present in VBT + * @dev_priv: i915 device instance + * + * Return true if TV is present. If no child devices were parsed from VBT, + * assume TV is present. + */ +bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv) +{ + union child_device_config *p_child; + int i; + + if (!dev_priv->vbt.int_tv_support) + return false; + + if (!dev_priv->vbt.child_dev_num) + return true; + + for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { + p_child = dev_priv->vbt.child_dev + i; + /* + * If the device type is not TV, continue. + */ + switch (p_child->old.device_type) { + case DEVICE_TYPE_INT_TV: + case DEVICE_TYPE_TV: + case DEVICE_TYPE_TV_SVIDEO_COMPOSITE: + break; + default: + continue; + } + /* Only when the addin_offset is non-zero, it is regarded + * as present. + */ + if (p_child->old.addin_offset) + return true; + } + + return false; +} + +/** + * intel_bios_is_lvds_present - is LVDS present in VBT + * @dev_priv: i915 device instance + * @i2c_pin: i2c pin for LVDS if present + * + * Return true if LVDS is present. If no child devices were parsed from VBT, + * assume LVDS is present. + */ +bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin) +{ + int i; + + if (!dev_priv->vbt.child_dev_num) + return true; + + for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { + union child_device_config *uchild = dev_priv->vbt.child_dev + i; + struct old_child_dev_config *child = &uchild->old; + + /* If the device type is not LFP, continue. + * We have to check both the new identifiers as well as the + * old for compatibility with some BIOSes. + */ + if (child->device_type != DEVICE_TYPE_INT_LFP && + child->device_type != DEVICE_TYPE_LFP) + continue; + + if (intel_gmbus_is_valid_pin(dev_priv, child->i2c_pin)) + *i2c_pin = child->i2c_pin; + + /* However, we cannot trust the BIOS writers to populate + * the VBT correctly. Since LVDS requires additional + * information from AIM blocks, a non-zero addin offset is + * a good indicator that the LVDS is actually present. + */ + if (child->addin_offset) + return true; + + /* But even then some BIOS writers perform some black magic + * and instantiate the device without reference to any + * additional data. Trust that if the VBT was written into + * the OpRegion then they have validated the LVDS's existence. + */ + if (dev_priv->opregion.vbt) + return true; + } + + return false; +} + +/** + * intel_bios_is_port_edp - is the device in given port eDP + * @dev_priv: i915 device instance + * @port: port to check + * + * Return true if the device in %port is eDP. + */ +bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port) +{ + union child_device_config *p_child; + static const short port_mapping[] = { + [PORT_B] = DVO_PORT_DPB, + [PORT_C] = DVO_PORT_DPC, + [PORT_D] = DVO_PORT_DPD, + [PORT_E] = DVO_PORT_DPE, + }; + int i; + + if (!dev_priv->vbt.child_dev_num) + return false; + + for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { + p_child = dev_priv->vbt.child_dev + i; + + if (p_child->common.dvo_port == port_mapping[port] && + (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == + (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) + return true; + } + + return false; +} + +/** + * intel_bios_is_dsi_present - is DSI present in VBT + * @dev_priv: i915 device instance + * @port: port for DSI if present + * + * Return true if DSI is present, and return the port in %port. + */ +bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, + enum port *port) +{ + union child_device_config *p_child; + u8 dvo_port; + int i; + + for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { + p_child = dev_priv->vbt.child_dev + i; + + if (!(p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT)) + continue; + + dvo_port = p_child->common.dvo_port; + + switch (dvo_port) { + case DVO_PORT_MIPIA: + case DVO_PORT_MIPIC: + if (port) + *port = dvo_port - DVO_PORT_MIPIA; + return true; + case DVO_PORT_MIPIB: + case DVO_PORT_MIPID: + DRM_DEBUG_KMS("VBT has unsupported DSI port %c\n", + port_name(dvo_port - DVO_PORT_MIPIA)); + break; + } + } + + return false; +} |