diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2010-07-12 15:33:07 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-07-26 11:41:45 +1000 |
| commit | a6ed76d7ffc62ffa474b41d31b011b6853c5de32 (patch) | |
| tree | 52987cfc795a1b42ab34a20bc6330e14d45d7485 /drivers/gpu/drm/nouveau/nouveau_acpi.c | |
| parent | 03639b50385810c2153624c0c8cb85de93d31356 (diff) | |
drm/nouveau: support fetching LVDS EDID from ACPI
Based on a patch from Matthew Garrett.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_acpi.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_acpi.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c index 381d3851f5c..c17a055ee3e 100644 --- a/drivers/gpu/drm/nouveau/nouveau_acpi.c +++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c @@ -3,6 +3,7 @@ #include <linux/slab.h> #include <acpi/acpi_drivers.h> #include <acpi/acpi_bus.h> +#include <acpi/video.h> #include "drmP.h" #include "drm.h" @@ -11,6 +12,7 @@ #include "nouveau_drv.h" #include "nouveau_drm.h" #include "nv50_display.h" +#include "nouveau_connector.h" #include <linux/vga_switcheroo.h> @@ -259,3 +261,37 @@ int nouveau_acpi_get_bios_chunk(uint8_t *bios, int offset, int len) { return nouveau_rom_call(nouveau_dsm_priv.rom_handle, bios, offset, len); } + +int +nouveau_acpi_edid(struct drm_device *dev, struct drm_connector *connector) +{ + struct nouveau_connector *nv_connector = nouveau_connector(connector); + struct acpi_device *acpidev; + acpi_handle handle; + int type, ret; + void *edid; + + switch (connector->connector_type) { + case DRM_MODE_CONNECTOR_LVDS: + case DRM_MODE_CONNECTOR_eDP: + type = ACPI_VIDEO_DISPLAY_LCD; + break; + default: + return -EINVAL; + } + + handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev); + if (!handle) + return -ENODEV; + + ret = acpi_bus_get_device(handle, &acpidev); + if (ret) + return -ENODEV; + + ret = acpi_video_get_edid(acpidev, type, -1, &edid); + if (ret < 0) + return ret; + + nv_connector->edid = edid; + return 0; +} |