diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_acpi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_acpi.c | 107 |
1 files changed, 102 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_acpi.c b/drivers/gpu/drm/i915/display/intel_acpi.c index 833d0c1be4f1..68c01932f7b4 100644 --- a/drivers/gpu/drm/i915/display/intel_acpi.c +++ b/drivers/gpu/drm/i915/display/intel_acpi.c @@ -7,10 +7,14 @@ #include <linux/pci.h> #include <linux/acpi.h> +#include <acpi/video.h> + +#include <drm/drm_print.h> -#include "i915_drv.h" #include "intel_acpi.h" +#include "intel_display_core.h" #include "intel_display_types.h" +#include "intel_display_utils.h" #define INTEL_DSM_REVISION_ID 1 /* For Calpella anyway... */ #define INTEL_DSM_FN_PLATFORM_MUX_INFO 1 /* No args */ @@ -19,6 +23,12 @@ static const guid_t intel_dsm_guid = GUID_INIT(0x7ed873d3, 0xc2d0, 0x4e4f, 0xa8, 0x54, 0x0f, 0x13, 0x17, 0xb0, 0x1c, 0x2c); +#define INTEL_DSM_FN_GET_BIOS_DATA_FUNCS_SUPPORTED 0 /* No args */ + +static const guid_t intel_dsm_guid2 = + GUID_INIT(0x3e5b41c6, 0xeb1d, 0x4260, + 0x9d, 0x15, 0xc7, 0x1f, 0xba, 0xda, 0xe4, 0x14); + static char *intel_dsm_port_name(u8 id) { switch (id) { @@ -146,7 +156,7 @@ static acpi_handle intel_dsm_pci_probe(struct pci_dev *pdev) static bool intel_dsm_detect(void) { acpi_handle dhandle = NULL; - char acpi_method_name[255] = { 0 }; + char acpi_method_name[255] = {}; struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name}; struct pci_dev *pdev = NULL; int vga_count = 0; @@ -176,6 +186,22 @@ void intel_unregister_dsm_handler(void) { } +void intel_dsm_get_bios_data_funcs_supported(struct intel_display *display) +{ + struct pci_dev *pdev = to_pci_dev(display->drm->dev); + acpi_handle dhandle; + union acpi_object *obj; + + dhandle = ACPI_HANDLE(&pdev->dev); + if (!dhandle) + return; + + obj = acpi_evaluate_dsm(dhandle, &intel_dsm_guid2, INTEL_DSM_REVISION_ID, + INTEL_DSM_FN_GET_BIOS_DATA_FUNCS_SUPPORTED, NULL); + if (obj) + ACPI_FREE(obj); +} + /* * ACPI Specification, Revision 5.0, Appendix B.3.2 _DOD (Enumerate All Devices * Attached to the Display Adapter). @@ -240,15 +266,14 @@ static u32 acpi_display_type(struct intel_connector *connector) return display_type; } -void intel_acpi_device_id_update(struct drm_i915_private *dev_priv) +void intel_acpi_device_id_update(struct intel_display *display) { - struct drm_device *drm_dev = &dev_priv->drm; struct intel_connector *connector; struct drm_connector_list_iter conn_iter; u8 display_index[16] = {}; /* Populate the ACPI IDs for all connectors for a given drm_device */ - drm_connector_list_iter_begin(drm_dev, &conn_iter); + drm_connector_list_iter_begin(display->drm, &conn_iter); for_each_intel_connector_iter(connector, &conn_iter) { u32 device_id, type; @@ -263,3 +288,75 @@ void intel_acpi_device_id_update(struct drm_i915_private *dev_priv) } drm_connector_list_iter_end(&conn_iter); } + +/* NOTE: The connector order must be final before this is called. */ +void intel_acpi_assign_connector_fwnodes(struct intel_display *display) +{ + struct drm_device *drm_dev = display->drm; + struct drm_connector_list_iter conn_iter; + struct fwnode_handle *fwnode = NULL; + struct drm_connector *connector; + struct acpi_device *adev; + + drm_connector_list_iter_begin(drm_dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { + /* Always getting the next, even when the last was not used. */ + fwnode = device_get_next_child_node(drm_dev->dev, fwnode); + if (!fwnode) + break; + + switch (connector->connector_type) { + case DRM_MODE_CONNECTOR_LVDS: + case DRM_MODE_CONNECTOR_eDP: + case DRM_MODE_CONNECTOR_DSI: + /* + * Integrated displays have a specific address 0x1f on + * most Intel platforms, but not on all of them. + */ + adev = acpi_find_child_device(ACPI_COMPANION(drm_dev->dev), + 0x1f, 0); + if (adev) { + connector->fwnode = + fwnode_handle_get(acpi_fwnode_handle(adev)); + break; + } + fallthrough; + default: + connector->fwnode = fwnode_handle_get(fwnode); + break; + } + } + drm_connector_list_iter_end(&conn_iter); + /* + * device_get_next_child_node() takes a reference on the fwnode, if + * we stopped iterating because we are out of connectors we need to + * put this, otherwise fwnode is NULL and the put is a no-op. + */ + fwnode_handle_put(fwnode); +} + +void intel_acpi_video_register(struct intel_display *display) +{ + struct drm_connector_list_iter conn_iter; + struct drm_connector *connector; + + acpi_video_register(); + + /* + * If i915 is driving an internal panel without registering its native + * backlight handler try to register the acpi_video backlight. + * For panels not driven by i915 another GPU driver may still register + * a native backlight later and acpi_video_register_backlight() should + * only be called after any native backlights have been registered. + */ + drm_connector_list_iter_begin(display->drm, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { + struct intel_panel *panel = &to_intel_connector(connector)->panel; + + if (panel->backlight.funcs && !panel->backlight.device) { + acpi_video_register_backlight(); + break; + } + } + drm_connector_list_iter_end(&conn_iter); +} |