diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 563 |
1 files changed, 426 insertions, 137 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 63c1bd4c2954..8beac06e3f10 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -29,6 +29,7 @@ #include <drm/i915_drm.h> #include "display/intel_display.h" +#include "display/intel_display_types.h" #include "display/intel_gmbus.h" #include "i915_drv.h" @@ -58,6 +59,13 @@ * that. */ +/* Wrapper for VBT child device config */ +struct display_device_data { + struct child_device_config child; + struct dsc_compression_parameters_entry *dsc; + struct list_head node; +}; + #define SLAVE_ADDR1 0x70 #define SLAVE_ADDR2 0x72 @@ -202,17 +210,12 @@ get_lvds_fp_timing(const struct bdb_header *bdb, return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs); } -/* Try to find integrated panel data */ +/* Parse general panel options */ static void -parse_lfp_panel_data(struct drm_i915_private *dev_priv, - const struct bdb_header *bdb) +parse_panel_options(struct drm_i915_private *dev_priv, + const struct bdb_header *bdb) { const struct bdb_lvds_options *lvds_options; - const struct bdb_lvds_lfp_data *lvds_lfp_data; - const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs; - const struct lvds_dvo_timing *panel_dvo_timing; - const struct lvds_fp_timing *fp_timing; - struct drm_display_mode *panel_fixed_mode; int panel_type; int drrs_mode; int ret; @@ -261,6 +264,19 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv, DRM_DEBUG_KMS("DRRS not supported (VBT input)\n"); break; } +} + +/* Try to find integrated panel timing data */ +static void +parse_lfp_panel_dtd(struct drm_i915_private *dev_priv, + const struct bdb_header *bdb) +{ + const struct bdb_lvds_lfp_data *lvds_lfp_data; + const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs; + const struct lvds_dvo_timing *panel_dvo_timing; + const struct lvds_fp_timing *fp_timing; + struct drm_display_mode *panel_fixed_mode; + int panel_type = dev_priv->vbt.panel_type; lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA); if (!lvds_lfp_data) @@ -282,7 +298,7 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv, dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode; - DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n"); + DRM_DEBUG_KMS("Found panel mode in BIOS VBT legacy lfp table:\n"); drm_mode_debug_printmodeline(panel_fixed_mode); fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data, @@ -300,6 +316,98 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv, } static void +parse_generic_dtd(struct drm_i915_private *dev_priv, + const struct bdb_header *bdb) +{ + const struct bdb_generic_dtd *generic_dtd; + const struct generic_dtd_entry *dtd; + struct drm_display_mode *panel_fixed_mode; + int num_dtd; + + generic_dtd = find_section(bdb, BDB_GENERIC_DTD); + if (!generic_dtd) + return; + + if (generic_dtd->gdtd_size < sizeof(struct generic_dtd_entry)) { + DRM_ERROR("GDTD size %u is too small.\n", + generic_dtd->gdtd_size); + return; + } else if (generic_dtd->gdtd_size != + sizeof(struct generic_dtd_entry)) { + DRM_ERROR("Unexpected GDTD size %u\n", generic_dtd->gdtd_size); + /* DTD has unknown fields, but keep going */ + } + + num_dtd = (get_blocksize(generic_dtd) - + sizeof(struct bdb_generic_dtd)) / generic_dtd->gdtd_size; + if (dev_priv->vbt.panel_type >= num_dtd) { + DRM_ERROR("Panel type %d not found in table of %d DTD's\n", + dev_priv->vbt.panel_type, num_dtd); + return; + } + + dtd = &generic_dtd->dtd[dev_priv->vbt.panel_type]; + + panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); + if (!panel_fixed_mode) + return; + + panel_fixed_mode->hdisplay = dtd->hactive; + panel_fixed_mode->hsync_start = + panel_fixed_mode->hdisplay + dtd->hfront_porch; + panel_fixed_mode->hsync_end = + panel_fixed_mode->hsync_start + dtd->hsync; + panel_fixed_mode->htotal = panel_fixed_mode->hsync_end; + + panel_fixed_mode->vdisplay = dtd->vactive; + panel_fixed_mode->vsync_start = + panel_fixed_mode->vdisplay + dtd->vfront_porch; + panel_fixed_mode->vsync_end = + panel_fixed_mode->vsync_start + dtd->vsync; + panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end; + + panel_fixed_mode->clock = dtd->pixel_clock; + panel_fixed_mode->width_mm = dtd->width_mm; + panel_fixed_mode->height_mm = dtd->height_mm; + + panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; + drm_mode_set_name(panel_fixed_mode); + + if (dtd->hsync_positive_polarity) + panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC; + else + panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC; + + if (dtd->vsync_positive_polarity) + panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC; + else + panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC; + + DRM_DEBUG_KMS("Found panel mode in BIOS VBT generic dtd table:\n"); + drm_mode_debug_printmodeline(panel_fixed_mode); + + dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode; +} + +static void +parse_panel_dtd(struct drm_i915_private *dev_priv, + const struct bdb_header *bdb) +{ + /* + * Older VBTs provided provided DTD information for internal displays + * through the "LFP panel DTD" block (42). As of VBT revision 229, + * that block is now deprecated and DTD information should be provided + * via a newer "generic DTD" block (58). Just to be safe, we'll + * try the new generic DTD block first on VBT >= 229, but still fall + * back to trying the old LFP block if that fails. + */ + if (bdb->version >= 229) + parse_generic_dtd(dev_priv, bdb); + if (!dev_priv->vbt.lfp_lvds_vbt_mode) + parse_lfp_panel_dtd(dev_priv, bdb); +} + +static void parse_lfp_backlight(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) { @@ -449,8 +557,9 @@ static void parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, u8 bdb_version) { struct sdvo_device_mapping *mapping; + const struct display_device_data *devdata; const struct child_device_config *child; - int i, count = 0; + int count = 0; /* * Only parse SDVO mappings on gens that could have SDVO. This isn't @@ -461,8 +570,8 @@ parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, u8 bdb_version) return; } - for (i = 0, count = 0; i < dev_priv->vbt.child_dev_num; i++) { - child = dev_priv->vbt.child_dev + i; + list_for_each_entry(devdata, &dev_priv->vbt.display_devices, node) { + child = &devdata->child; if (child->slave_addr != SLAVE_ADDR1 && child->slave_addr != SLAVE_ADDR2) { @@ -552,16 +661,45 @@ parse_driver_features(struct drm_i915_private *dev_priv, dev_priv->vbt.int_lvds_support = 0; } - DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled); + if (bdb->version < 228) { + DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled); + /* + * If DRRS is not supported, drrs_type has to be set to 0. + * This is because, VBT is configured in such a way that + * static DRRS is 0 and DRRS not supported is represented by + * driver->drrs_enabled=false + */ + if (!driver->drrs_enabled) + dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; + + dev_priv->vbt.psr.enable = driver->psr_enabled; + } +} + +static void +parse_power_conservation_features(struct drm_i915_private *dev_priv, + const struct bdb_header *bdb) +{ + const struct bdb_lfp_power *power; + u8 panel_type = dev_priv->vbt.panel_type; + + if (bdb->version < 228) + return; + + power = find_section(bdb, BDB_LVDS_POWER); + if (!power) + return; + + dev_priv->vbt.psr.enable = power->psr & BIT(panel_type); + /* * If DRRS is not supported, drrs_type has to be set to 0. * This is because, VBT is configured in such a way that * static DRRS is 0 and DRRS not supported is represented by - * driver->drrs_enabled=false + * power->drrs & BIT(panel_type)=false */ - if (!driver->drrs_enabled) + if (!(power->drrs & BIT(panel_type))) dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; - dev_priv->vbt.psr.enable = driver->psr_enabled; } static void @@ -1230,6 +1368,57 @@ err: memset(dev_priv->vbt.dsi.sequence, 0, sizeof(dev_priv->vbt.dsi.sequence)); } +static void +parse_compression_parameters(struct drm_i915_private *i915, + const struct bdb_header *bdb) +{ + const struct bdb_compression_parameters *params; + struct display_device_data *devdata; + const struct child_device_config *child; + u16 block_size; + int index; + + if (bdb->version < 198) + return; + + params = find_section(bdb, BDB_COMPRESSION_PARAMETERS); + if (params) { + /* Sanity checks */ + if (params->entry_size != sizeof(params->data[0])) { + DRM_DEBUG_KMS("VBT: unsupported compression param entry size\n"); + return; + } + + block_size = get_blocksize(params); + if (block_size < sizeof(*params)) { + DRM_DEBUG_KMS("VBT: expected 16 compression param entries\n"); + return; + } + } + + list_for_each_entry(devdata, &i915->vbt.display_devices, node) { + child = &devdata->child; + + if (!child->compression_enable) + continue; + + if (!params) { + DRM_DEBUG_KMS("VBT: compression params not available\n"); + continue; + } + + if (child->compression_method_cps) { + DRM_DEBUG_KMS("VBT: CPS compression not supported\n"); + continue; + } + + index = child->compression_structure_index; + + devdata->dsc = kmemdup(¶ms->data[index], + sizeof(*devdata->dsc), GFP_KERNEL); + } +} + static u8 translate_iboost(u8 val) { static const u8 mapping[] = { 1, 3, 7 }; /* See VBT spec */ @@ -1246,7 +1435,7 @@ static enum port get_port_by_ddc_pin(struct drm_i915_private *i915, u8 ddc_pin) const struct ddi_vbt_port_info *info; enum port port; - for (port = PORT_A; port < I915_MAX_PORTS; port++) { + for_each_port(port) { info = &i915->vbt.ddi_port_info[port]; if (info->child && ddc_pin == info->alternate_ddc_pin) @@ -1297,7 +1486,7 @@ static enum port get_port_by_aux_ch(struct drm_i915_private *i915, u8 aux_ch) const struct ddi_vbt_port_info *info; enum port port; - for (port = PORT_A; port < I915_MAX_PORTS; port++) { + for_each_port(port) { info = &i915->vbt.ddi_port_info[port]; if (info->child && aux_ch == info->alternate_aux_channel) @@ -1418,9 +1607,10 @@ static enum port dvo_port_to_port(u8 dvo_port) } static void parse_ddi_port(struct drm_i915_private *dev_priv, - const struct child_device_config *child, + struct display_device_data *devdata, u8 bdb_version) { + 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; enum port port; @@ -1443,7 +1633,7 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, is_hdmi = is_dvi && (child->device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0; is_edp = is_dp && (child->device_type & DEVICE_TYPE_INTERNAL_CONNECTOR); - if (port == PORT_A && is_dvi) { + if (port == PORT_A && is_dvi && INTEL_GEN(dev_priv) < 12) { DRM_DEBUG_KMS("VBT claims port A supports DVI%s, ignoring\n", is_hdmi ? "/HDMI" : ""); is_dvi = false; @@ -1461,26 +1651,11 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, if (bdb_version >= 209) info->supports_tbt = child->tbt; - DRM_DEBUG_KMS("Port %c VBT info: CRT:%d DVI:%d HDMI:%d DP:%d eDP:%d LSPCON:%d USB-Type-C:%d TBT:%d\n", + DRM_DEBUG_KMS("Port %c VBT info: CRT:%d DVI:%d HDMI:%d DP:%d eDP:%d LSPCON:%d USB-Type-C:%d TBT:%d DSC:%d\n", port_name(port), is_crt, is_dvi, is_hdmi, is_dp, is_edp, HAS_LSPCON(dev_priv) && child->lspcon, - info->supports_typec_usb, info->supports_tbt); - - if (is_edp && is_dvi) - DRM_DEBUG_KMS("Internal DP port %c is TMDS compatible\n", - port_name(port)); - if (is_crt && port != PORT_E) - DRM_DEBUG_KMS("Port %c is analog\n", port_name(port)); - if (is_crt && (is_dvi || is_dp)) - DRM_DEBUG_KMS("Analog port %c is also DP or TMDS compatible\n", - port_name(port)); - if (is_dvi && (port == PORT_A || port == PORT_E)) - DRM_DEBUG_KMS("Port %c is TMDS compatible\n", port_name(port)); - if (!is_dvi && !is_dp && !is_crt) - DRM_DEBUG_KMS("Port %c is not DP/TMDS/CRT compatible\n", - port_name(port)); - if (is_edp && (port == PORT_B || port == PORT_C || port == PORT_E)) - DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port)); + info->supports_typec_usb, info->supports_tbt, + devdata->dsc != NULL); if (is_dvi) { u8 ddc_pin; @@ -1509,6 +1684,7 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, port_name(port), hdmi_level_shift); info->hdmi_level_shift = hdmi_level_shift; + info->hdmi_level_shift_set = true; } if (bdb_version >= 204) { @@ -1571,8 +1747,7 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, static void parse_ddi_ports(struct drm_i915_private *dev_priv, u8 bdb_version) { - const struct child_device_config *child; - int i; + struct display_device_data *devdata; if (!HAS_DDI(dev_priv) && !IS_CHERRYVIEW(dev_priv)) return; @@ -1580,11 +1755,8 @@ static void parse_ddi_ports(struct drm_i915_private *dev_priv, u8 bdb_version) if (bdb_version < 155) return; - for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { - child = dev_priv->vbt.child_dev + i; - - parse_ddi_port(dev_priv, child, bdb_version); - } + list_for_each_entry(devdata, &dev_priv->vbt.display_devices, node) + parse_ddi_port(dev_priv, devdata, bdb_version); } static void @@ -1592,8 +1764,9 @@ parse_general_definitions(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) { const struct bdb_general_definitions *defs; + struct display_device_data *devdata; const struct child_device_config *child; - int i, child_device_num, count; + int i, child_device_num; u8 expected_size; u16 block_size; int bus_pin; @@ -1649,26 +1822,7 @@ parse_general_definitions(struct drm_i915_private *dev_priv, /* get the number of child device */ child_device_num = (block_size - sizeof(*defs)) / defs->child_dev_size; - count = 0; - /* get the number of child device that is present */ - for (i = 0; i < child_device_num; i++) { - child = child_device_ptr(defs, i); - if (!child->device_type) - continue; - count++; - } - if (!count) { - DRM_DEBUG_KMS("no child dev is parsed from VBT\n"); - return; - } - dev_priv->vbt.child_dev = kcalloc(count, sizeof(*child), GFP_KERNEL); - if (!dev_priv->vbt.child_dev) { - DRM_DEBUG_KMS("No memory space for child device\n"); - return; - } - dev_priv->vbt.child_dev_num = count; - count = 0; for (i = 0; i < child_device_num; i++) { child = child_device_ptr(defs, i); if (!child->device_type) @@ -1677,23 +1831,29 @@ parse_general_definitions(struct drm_i915_private *dev_priv, DRM_DEBUG_KMS("Found VBT child device with type 0x%x\n", child->device_type); + devdata = kzalloc(sizeof(*devdata), GFP_KERNEL); + if (!devdata) + break; + /* * Copy as much as we know (sizeof) and is available - * (child_dev_size) of the child device. Accessing the data must - * depend on VBT version. + * (child_dev_size) of the child device config. Accessing the + * data must depend on VBT version. */ - memcpy(dev_priv->vbt.child_dev + count, child, + memcpy(&devdata->child, child, min_t(size_t, defs->child_dev_size, sizeof(*child))); - count++; + + list_add_tail(&devdata->node, &dev_priv->vbt.display_devices); } + + if (list_empty(&dev_priv->vbt.display_devices)) + DRM_DEBUG_KMS("no child dev is parsed from VBT\n"); } /* Common defaults which may be overridden by VBT. */ static void init_vbt_defaults(struct drm_i915_private *dev_priv) { - enum port port; - dev_priv->vbt.crt_ddc_pin = GMBUS_PIN_VGADDC; /* Default to having backlight */ @@ -1721,13 +1881,6 @@ init_vbt_defaults(struct drm_i915_private *dev_priv) dev_priv->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(dev_priv, !HAS_PCH_SPLIT(dev_priv)); DRM_DEBUG_KMS("Set default to SSC at %d kHz\n", dev_priv->vbt.lvds_ssc_freq); - - for (port = PORT_A; port < I915_MAX_PORTS; port++) { - struct ddi_vbt_port_info *info = - &dev_priv->vbt.ddi_port_info[port]; - - info->hdmi_level_shift = HDMI_LEVEL_SHIFT_UNKNOWN; - } } /* Defaults to initialize only if there is no VBT. */ @@ -1736,7 +1889,7 @@ init_vbt_missing_defaults(struct drm_i915_private *dev_priv) { enum port port; - for (port = PORT_A; port < I915_MAX_PORTS; port++) { + for_each_port(port) { struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port]; enum phy phy = intel_port_to_phy(dev_priv, port); @@ -1787,6 +1940,13 @@ bool intel_bios_is_valid_vbt(const void *buf, size_t size) return false; } + if (vbt->vbt_size > size) { + DRM_DEBUG_DRIVER("VBT incomplete (vbt_size overflows)\n"); + return false; + } + + size = vbt->vbt_size; + if (range_overflows_t(size_t, vbt->bdb_offset, sizeof(struct bdb_header), @@ -1804,28 +1964,61 @@ bool intel_bios_is_valid_vbt(const void *buf, size_t size) return vbt; } -static const struct vbt_header *find_vbt(void __iomem *bios, size_t size) +static struct vbt_header *oprom_get_vbt(struct drm_i915_private *dev_priv) { - size_t i; + struct pci_dev *pdev = dev_priv->drm.pdev; + void __iomem *p = NULL, *oprom; + struct vbt_header *vbt; + u16 vbt_size; + size_t i, size; - /* Scour memory looking for the VBT signature. */ - for (i = 0; i + 4 < size; i++) { - void *vbt; + oprom = pci_map_rom(pdev, &size); + if (!oprom) + return NULL; - if (ioread32(bios + i) != *((const u32 *) "$VBT")) + /* Scour memory looking for the VBT signature. */ + for (i = 0; i + 4 < size; i += 4) { + if (ioread32(oprom + i) != *((const u32 *)"$VBT")) continue; - /* - * This is the one place where we explicitly discard the address - * space (__iomem) of the BIOS/VBT. - */ - vbt = (void __force *) bios + i; - if (intel_bios_is_valid_vbt(vbt, size - i)) - return vbt; - + p = oprom + i; + size -= i; break; } + if (!p) + goto err_unmap_oprom; + + if (sizeof(struct vbt_header) > size) { + DRM_DEBUG_DRIVER("VBT header incomplete\n"); + goto err_unmap_oprom; + } + + vbt_size = ioread16(p + offsetof(struct vbt_header, vbt_size)); + if (vbt_size > size) { + DRM_DEBUG_DRIVER("VBT incomplete (vbt_size overflows)\n"); + goto err_unmap_oprom; + } + + /* The rest will be validated by intel_bios_is_valid_vbt() */ + vbt = kmalloc(vbt_size, GFP_KERNEL); + if (!vbt) + goto err_unmap_oprom; + + memcpy_fromio(vbt, p, vbt_size); + + if (!intel_bios_is_valid_vbt(vbt, vbt_size)) + goto err_free_vbt; + + pci_unmap_rom(pdev, oprom); + + return vbt; + +err_free_vbt: + kfree(vbt); +err_unmap_oprom: + pci_unmap_rom(pdev, oprom); + return NULL; } @@ -1839,10 +2032,11 @@ static const struct vbt_header *find_vbt(void __iomem *bios, size_t size) */ void intel_bios_init(struct drm_i915_private *dev_priv) { - struct pci_dev *pdev = dev_priv->drm.pdev; const struct vbt_header *vbt = dev_priv->opregion.vbt; + struct vbt_header *oprom_vbt = NULL; const struct bdb_header *bdb; - u8 __iomem *bios = NULL; + + INIT_LIST_HEAD(&dev_priv->vbt.display_devices); if (!HAS_DISPLAY(dev_priv) || !INTEL_DISPLAY_ENABLED(dev_priv)) { DRM_DEBUG_KMS("Skipping VBT init due to disabled display.\n"); @@ -1853,15 +2047,11 @@ void intel_bios_init(struct drm_i915_private *dev_priv) /* If the OpRegion does not have VBT, look in PCI ROM. */ if (!vbt) { - size_t size; - - bios = pci_map_rom(pdev, &size); - if (!bios) + oprom_vbt = oprom_get_vbt(dev_priv); + if (!oprom_vbt) goto out; - vbt = find_vbt(bios, size); - if (!vbt) - goto out; + vbt = oprom_vbt; DRM_DEBUG_KMS("Found valid VBT in PCI ROM\n"); } @@ -1874,15 +2064,20 @@ void intel_bios_init(struct drm_i915_private *dev_priv) /* Grab useful general definitions */ parse_general_features(dev_priv, bdb); parse_general_definitions(dev_priv, bdb); - parse_lfp_panel_data(dev_priv, bdb); + parse_panel_options(dev_priv, bdb); + parse_panel_dtd(dev_priv, bdb); parse_lfp_backlight(dev_priv, bdb); parse_sdvo_panel_data(dev_priv, bdb); parse_driver_features(dev_priv, bdb); + parse_power_conservation_features(dev_priv, bdb); parse_edp(dev_priv, bdb); parse_psr(dev_priv, bdb); parse_mipi_config(dev_priv, bdb); parse_mipi_sequence(dev_priv, bdb); + /* Depends on child device list */ + parse_compression_parameters(dev_priv, bdb); + /* Further processing on pre-parsed data */ parse_sdvo_device_mapping(dev_priv, bdb->version); parse_ddi_ports(dev_priv, bdb->version); @@ -1893,8 +2088,7 @@ out: init_vbt_missing_defaults(dev_priv); } - if (bios) - pci_unmap_rom(pdev, bios); + kfree(oprom_vbt); } /** @@ -1903,9 +2097,14 @@ out: */ void intel_bios_driver_remove(struct drm_i915_private *dev_priv) { - kfree(dev_priv->vbt.child_dev); - dev_priv->vbt.child_dev = NULL; - dev_priv->vbt.child_dev_num = 0; + struct display_device_data *devdata, *n; + + list_for_each_entry_safe(devdata, n, &dev_priv->vbt.display_devices, node) { + list_del(&devdata->node); + kfree(devdata->dsc); + kfree(devdata); + } + kfree(dev_priv->vbt.sdvo_lvds_vbt_mode); dev_priv->vbt.sdvo_lvds_vbt_mode = NULL; kfree(dev_priv->vbt.lfp_lvds_vbt_mode); @@ -1929,17 +2128,18 @@ void intel_bios_driver_remove(struct drm_i915_private *dev_priv) */ bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv) { + const struct display_device_data *devdata; const struct child_device_config *child; - int i; if (!dev_priv->vbt.int_tv_support) return false; - if (!dev_priv->vbt.child_dev_num) + if (list_empty(&dev_priv->vbt.display_devices)) return true; - for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { - child = dev_priv->vbt.child_dev + i; + list_for_each_entry(devdata, &dev_priv->vbt.display_devices, node) { + child = &devdata->child; + /* * If the device type is not TV, continue. */ @@ -1971,14 +2171,14 @@ bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv) */ bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin) { + const struct display_device_data *devdata; const struct child_device_config *child; - int i; - if (!dev_priv->vbt.child_dev_num) + if (list_empty(&dev_priv->vbt.display_devices)) return true; - for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { - child = dev_priv->vbt.child_dev + i; + list_for_each_entry(devdata, &dev_priv->vbt.display_devices, node) { + child = &devdata->child; /* If the device type is not LFP, continue. * We have to check both the new identifiers as well as the @@ -2020,6 +2220,7 @@ bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin) */ bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port) { + const struct display_device_data *devdata; const struct child_device_config *child; static const struct { u16 dp, hdmi; @@ -2030,7 +2231,6 @@ bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port por [PORT_E] = { DVO_PORT_DPE, DVO_PORT_HDMIE, }, [PORT_F] = { DVO_PORT_DPF, DVO_PORT_HDMIF, }, }; - int i; if (HAS_DDI(dev_priv)) { const struct ddi_vbt_port_info *port_info = @@ -2045,11 +2245,8 @@ bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port por if (WARN_ON(port == PORT_A) || port >= ARRAY_SIZE(port_mapping)) return false; - if (!dev_priv->vbt.child_dev_num) - return false; - - for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { - child = dev_priv->vbt.child_dev + i; + list_for_each_entry(devdata, &dev_priv->vbt.display_devices, node) { + child = &devdata->child; if ((child->dvo_port == port_mapping[port].dp || child->dvo_port == port_mapping[port].hdmi) && @@ -2070,6 +2267,7 @@ bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port por */ bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port) { + const struct display_device_data *devdata; const struct child_device_config *child; static const short port_mapping[] = { [PORT_B] = DVO_PORT_DPB, @@ -2078,16 +2276,12 @@ bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port) [PORT_E] = DVO_PORT_DPE, [PORT_F] = DVO_PORT_DPF, }; - int i; if (HAS_DDI(dev_priv)) return dev_priv->vbt.ddi_port_info[port].supports_edp; - if (!dev_priv->vbt.child_dev_num) - return false; - - for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { - child = dev_priv->vbt.child_dev + i; + list_for_each_entry(devdata, &dev_priv->vbt.display_devices, node) { + child = &devdata->child; if (child->dvo_port == port_mapping[port] && (child->device_type & DEVICE_TYPE_eDP_BITS) == @@ -2136,13 +2330,10 @@ static bool child_dev_is_dp_dual_mode(const struct child_device_config *child, bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv, enum port port) { - const struct child_device_config *child; - int i; - - for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { - child = dev_priv->vbt.child_dev + i; + const struct display_device_data *devdata; - if (child_dev_is_dp_dual_mode(child, port)) + list_for_each_entry(devdata, &dev_priv->vbt.display_devices, node) { + if (child_dev_is_dp_dual_mode(&devdata->child, port)) return true; } @@ -2159,12 +2350,12 @@ bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv, bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port) { + const struct display_device_data *devdata; const struct child_device_config *child; u8 dvo_port; - int i; - for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { - child = dev_priv->vbt.child_dev + i; + list_for_each_entry(devdata, &dev_priv->vbt.display_devices, node) { + child = &devdata->child; if (!(child->device_type & DEVICE_TYPE_MIPI_OUTPUT)) continue; @@ -2188,6 +2379,104 @@ bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, return false; } +static void fill_dsc(struct intel_crtc_state *crtc_state, + struct dsc_compression_parameters_entry *dsc, + int dsc_max_bpc) +{ + struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; + int bpc = 8; + + vdsc_cfg->dsc_version_major = dsc->version_major; + vdsc_cfg->dsc_version_minor = dsc->version_minor; + + if (dsc->support_12bpc && dsc_max_bpc >= 12) + bpc = 12; + else if (dsc->support_10bpc && dsc_max_bpc >= 10) + bpc = 10; + else if (dsc->support_8bpc && dsc_max_bpc >= 8) + bpc = 8; + else + DRM_DEBUG_KMS("VBT: Unsupported BPC %d for DCS\n", + dsc_max_bpc); + + crtc_state->pipe_bpp = bpc * 3; + + crtc_state->dsc.compressed_bpp = min(crtc_state->pipe_bpp, + VBT_DSC_MAX_BPP(dsc->max_bpp)); + + /* + * FIXME: This is ugly, and slice count should take DSC engine + * throughput etc. into account. + * + * Also, per spec DSI supports 1, 2, 3 or 4 horizontal slices. + */ + if (dsc->slices_per_line & BIT(2)) { + crtc_state->dsc.slice_count = 4; + } else if (dsc->slices_per_line & BIT(1)) { + crtc_state->dsc.slice_count = 2; + } else { + /* FIXME */ + if (!(dsc->slices_per_line & BIT(0))) + DRM_DEBUG_KMS("VBT: Unsupported DSC slice count for DSI\n"); + + crtc_state->dsc.slice_count = 1; + } + + if (crtc_state->hw.adjusted_mode.crtc_hdisplay % + crtc_state->dsc.slice_count != 0) + DRM_DEBUG_KMS("VBT: DSC hdisplay %d not divisible by slice count %d\n", + crtc_state->hw.adjusted_mode.crtc_hdisplay, + crtc_state->dsc.slice_count); + + /* + * FIXME: Use VBT rc_buffer_block_size and rc_buffer_size for the + * implementation specific physical rate buffer size. Currently we use + * the required rate buffer model size calculated in + * drm_dsc_compute_rc_parameters() according to VESA DSC Annex E. + * + * The VBT rc_buffer_block_size and rc_buffer_size definitions + * correspond to DP 1.4 DPCD offsets 0x62 and 0x63. The DP DSC + * implementation should also use the DPCD (or perhaps VBT for eDP) + * provided value for the buffer size. + */ + + /* FIXME: DSI spec says bpc + 1 for this one */ + vdsc_cfg->line_buf_depth = VBT_DSC_LINE_BUFFER_DEPTH(dsc->line_buffer_depth); + + vdsc_cfg->block_pred_enable = dsc->block_prediction_enable; + + vdsc_cfg->slice_height = dsc->slice_height; +} + +/* FIXME: initially DSI specific */ +bool intel_bios_get_dsc_params(struct intel_encoder *encoder, + struct intel_crtc_state *crtc_state, + int dsc_max_bpc) +{ + struct drm_i915_private *i915 = to_i915(encoder->base.dev); + const struct display_device_data *devdata; + const struct child_device_config *child; + + list_for_each_entry(devdata, &i915->vbt.display_devices, node) { + child = &devdata->child; + + if (!(child->device_type & DEVICE_TYPE_MIPI_OUTPUT)) + continue; + + if (child->dvo_port - DVO_PORT_MIPIA == encoder->port) { + if (!devdata->dsc) + return false; + + if (crtc_state) + fill_dsc(crtc_state, devdata->dsc, dsc_max_bpc); + + return true; + } + } + + return false; +} + /** * intel_bios_is_port_hpd_inverted - is HPD inverted for %port * @i915: i915 device instance |