drm/display/drm_scdc_helper.c

17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
24 #include <linux/i2c.h>
37  * HDMI 2.0 specification. It is a point-to-point protocol that allows the
38  * HDMI source and HDMI sink to exchange data. The same I2C interface that
58  * drm_scdc_read - read a block of data from SCDC
59  * @adapter: I2C controller
91 		return -EPROTO;  in drm_scdc_read()
98  * drm_scdc_write - write a block of data to SCDC
99  * @adapter: I2C controller
123 		return -ENOMEM;  in drm_scdc_write()
137 		return -EPROTO;  in drm_scdc_write()
144  * drm_scdc_get_scrambling_status - what is status of scrambling?
158 	ret = drm_scdc_readb(connector->ddc, SCDC_SCRAMBLER_STATUS, &status);  in drm_scdc_get_scrambling_status()
160 		drm_dbg_kms(connector->dev,  in drm_scdc_get_scrambling_status()
162 			    connector->base.id, connector->name, ret);  in drm_scdc_get_scrambling_status()
171  * drm_scdc_set_scrambling - enable scrambling
188 	ret = drm_scdc_readb(connector->ddc, SCDC_TMDS_CONFIG, &config);  in drm_scdc_set_scrambling()
190 		drm_dbg_kms(connector->dev,  in drm_scdc_set_scrambling()
192 			    connector->base.id, connector->name, ret);  in drm_scdc_set_scrambling()
201 	ret = drm_scdc_writeb(connector->ddc, SCDC_TMDS_CONFIG, config);  in drm_scdc_set_scrambling()
203 		drm_dbg_kms(connector->dev,  in drm_scdc_set_scrambling()
205 			    connector->base.id, connector->name, ret);  in drm_scdc_set_scrambling()
214  * drm_scdc_set_high_tmds_clock_ratio - set TMDS clock ratio
248 	ret = drm_scdc_readb(connector->ddc, SCDC_TMDS_CONFIG, &config);  in drm_scdc_set_high_tmds_clock_ratio()
250 		drm_dbg_kms(connector->dev,  in drm_scdc_set_high_tmds_clock_ratio()
252 			    connector->base.id, connector->name, ret);  in drm_scdc_set_high_tmds_clock_ratio()
261 	ret = drm_scdc_writeb(connector->ddc, SCDC_TMDS_CONFIG, config);  in drm_scdc_set_high_tmds_clock_ratio()
263 		drm_dbg_kms(connector->dev,  in drm_scdc_set_high_tmds_clock_ratio()
265 			    connector->base.id, connector->name, ret);  in drm_scdc_set_high_tmds_clock_ratio()