diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_i2c.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c.c b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c.c index dd41736bb5c4..f5cd2392fc5f 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c.c @@ -25,6 +25,32 @@ #include "dce_i2c.h" #include "reg_helper.h" +bool dce_i2c_oem_device_present( + struct resource_pool *pool, + struct ddc_service *ddc, + size_t slave_address +) +{ + struct dc *dc = ddc->ctx->dc; + struct dc_bios *dcb = dc->ctx->dc_bios; + struct graphics_object_id id = {0}; + struct graphics_object_i2c_info i2c_info; + + if (!dc->ctx->dc_bios->fw_info.oem_i2c_present) + return false; + + id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id; + id.enum_id = 0; + id.type = OBJECT_TYPE_GENERIC; + if (dcb->funcs->get_i2c_info(dcb, id, &i2c_info) != BP_RESULT_OK) + return false; + + if (i2c_info.i2c_slave_address != slave_address) + return false; + + return true; +} + bool dce_i2c_submit_command( struct resource_pool *pool, struct ddc *ddc, |