i915/display/intel_cmtg.c

1 // SPDX-License-Identifier: MIT
26  * primary and transcoders TGs act as secondary to the CMTG. The CMTG outputs
28  * as secondary, which use those signals to synchronize their own timing with
31  * The CMTG can be used only with eDP or MIPI command mode and supports the
34  * - Dual eDP: The CMTG can be used to keep two eDP TGs in sync when on a
37  * - Single eDP as secondary: It is also possible to use a single eDP
38  *   configuration with the transcoder TG as secondary to the CMTG. That would
42  * - DC6v: In DC6v, the transcoder might be off but the CMTG keeps running to
57 	 * Xe2_LPD adds a second CMTG that can be used for dual eDP async mode.
77 	drm_dbg_kms(display->drm,  in intel_cmtg_dump_config()
78 …  "CMTG readout: CMTG A: %s, CMTG B: %s, Transcoder A secondary: %s, Transcoder B secondary: %s\n",  in intel_cmtg_dump_config()
79 		    str_enabled_disabled(cmtg_config->cmtg_a_enable),  in intel_cmtg_dump_config()
80 		    intel_cmtg_has_cmtg_b(display) ? str_enabled_disabled(cmtg_config->cmtg_b_enable) : "n/a",  in intel_cmtg_dump_config()
81 		    str_yes_no(cmtg_config->trans_a_secondary),  in intel_cmtg_dump_config()
82 		    str_yes_no(cmtg_config->trans_b_secondary));  in intel_cmtg_dump_config()
109 	cmtg_config->cmtg_a_enable = val & CMTG_ENABLE;  in intel_cmtg_get_config()
113 		cmtg_config->cmtg_b_enable = val & CMTG_ENABLE;  in intel_cmtg_get_config()
116 	cmtg_config->trans_a_secondary = intel_cmtg_transcoder_is_secondary(display, TRANSCODER_A);  in intel_cmtg_get_config()
117 	cmtg_config->trans_b_secondary = intel_cmtg_transcoder_is_secondary(display, TRANSCODER_B);  in intel_cmtg_get_config()
126 	return cmtg_config->trans_a_secondary || cmtg_config->trans_b_secondary;  in intel_cmtg_disable_requires_modeset()
135 	if (cmtg_config->trans_a_secondary)  in intel_cmtg_disable()
139 	if (cmtg_config->trans_b_secondary)  in intel_cmtg_disable()
143 	if (cmtg_config->cmtg_a_enable) {  in intel_cmtg_disable()
144 		drm_dbg_kms(display->drm, "Disabling CMTG A\n");  in intel_cmtg_disable()
150 	if (cmtg_config->cmtg_b_enable) {  in intel_cmtg_disable()
151 		drm_dbg_kms(display->drm, "Disabling CMTG B\n");  in intel_cmtg_disable()