1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
2 // Copyright(c) 2015-17 Intel Corporation.
5  * MIPI Discovery And Configuration (DisCo) Specification for SoundWire
47  * sdw_master_read_prop() - Read Master properties
52 	struct sdw_master_prop *prop = &bus->prop;  in sdw_master_read_prop()
60 	device_property_read_u32(bus->dev,  in sdw_master_read_prop()
61 				 "mipi-sdw-sw-interface-revision",  in sdw_master_read_prop()
62 				 &prop->revision);  in sdw_master_read_prop()
66 		 "mipi-sdw-link-%d-subproperties", bus->link_id);  in sdw_master_read_prop()
68 	link = device_get_named_child_node(bus->dev, name);  in sdw_master_read_prop()
70 		dev_err(bus->dev, "Master node %s not found\n", name);  in sdw_master_read_prop()
71 		return -EIO;  in sdw_master_read_prop()
75 				      "mipi-sdw-clock-stop-mode0-supported"))  in sdw_master_read_prop()
76 		prop->clk_stop_modes |= BIT(SDW_CLK_STOP_MODE0);  in sdw_master_read_prop()
79 				      "mipi-sdw-clock-stop-mode1-supported"))  in sdw_master_read_prop()
80 		prop->clk_stop_modes |= BIT(SDW_CLK_STOP_MODE1);  in sdw_master_read_prop()
83 				 "mipi-sdw-max-clock-frequency",  in sdw_master_read_prop()
84 				 &prop->max_clk_freq);  in sdw_master_read_prop()
86 	nval = fwnode_property_count_u32(link, "mipi-sdw-clock-frequencies-supported");  in sdw_master_read_prop()
88 		prop->num_clk_freq = nval;  in sdw_master_read_prop()
89 		prop->clk_freq = devm_kcalloc(bus->dev, prop->num_clk_freq,  in sdw_master_read_prop()
90 					      sizeof(*prop->clk_freq),  in sdw_master_read_prop()
92 		if (!prop->clk_freq) {  in sdw_master_read_prop()
94 			return -ENOMEM;  in sdw_master_read_prop()
98 				"mipi-sdw-clock-frequencies-supported",  in sdw_master_read_prop()
99 				prop->clk_freq, prop->num_clk_freq);  in sdw_master_read_prop()
108 	if (!prop->max_clk_freq && prop->clk_freq) {  in sdw_master_read_prop()
109 		prop->max_clk_freq = prop->clk_freq[0];  in sdw_master_read_prop()
110 		for (i = 1; i < prop->num_clk_freq; i++) {  in sdw_master_read_prop()
111 			if (prop->clk_freq[i] > prop->max_clk_freq)  in sdw_master_read_prop()
112 				prop->max_clk_freq = prop->clk_freq[i];  in sdw_master_read_prop()
116 	scales_prop = "mipi-sdw-supported-clock-scales";  in sdw_master_read_prop()
119 		scales_prop = "mipi-sdw-supported-clock-gears";  in sdw_master_read_prop()
123 		prop->num_clk_gears = nval;  in sdw_master_read_prop()
124 		prop->clk_gears = devm_kcalloc(bus->dev, prop->num_clk_gears,  in sdw_master_read_prop()
125 					       sizeof(*prop->clk_gears),  in sdw_master_read_prop()
127 		if (!prop->clk_gears) {  in sdw_master_read_prop()
129 			return -ENOMEM;  in sdw_master_read_prop()
134 					       prop->clk_gears,  in sdw_master_read_prop()
135 					       prop->num_clk_gears);  in sdw_master_read_prop()
140 	fwnode_property_read_u32(link, "mipi-sdw-default-frame-rate",  in sdw_master_read_prop()
141 				 &prop->default_frame_rate);  in sdw_master_read_prop()
143 	fwnode_property_read_u32(link, "mipi-sdw-default-frame-row-size",  in sdw_master_read_prop()
144 				 &prop->default_row);  in sdw_master_read_prop()
146 	fwnode_property_read_u32(link, "mipi-sdw-default-frame-col-size",  in sdw_master_read_prop()
147 				 &prop->default_col);  in sdw_master_read_prop()
149 	prop->dynamic_frame =  mipi_fwnode_property_read_bool(link,  in sdw_master_read_prop()
150 			"mipi-sdw-dynamic-frame-shape");  in sdw_master_read_prop()
152 	fwnode_property_read_u32(link, "mipi-sdw-command-error-threshold",  in sdw_master_read_prop()
153 				 &prop->err_threshold);  in sdw_master_read_prop()
168 	fwnode_property_read_u32(port, "mipi-sdw-port-max-wordlength",  in sdw_slave_read_dp0()
169 				 &dp0->max_word);  in sdw_slave_read_dp0()
171 	fwnode_property_read_u32(port, "mipi-sdw-port-min-wordlength",  in sdw_slave_read_dp0()
172 				 &dp0->min_word);  in sdw_slave_read_dp0()
174 	nval = fwnode_property_count_u32(port, "mipi-sdw-port-wordlength-configs");  in sdw_slave_read_dp0()
177 		dp0->num_words = nval;  in sdw_slave_read_dp0()
178 		dp0->words = devm_kcalloc(&slave->dev,  in sdw_slave_read_dp0()
179 					  dp0->num_words, sizeof(*dp0->words),  in sdw_slave_read_dp0()
181 		if (!dp0->words)  in sdw_slave_read_dp0()
182 			return -ENOMEM;  in sdw_slave_read_dp0()
185 				"mipi-sdw-port-wordlength-configs",  in sdw_slave_read_dp0()
186 				dp0->words, dp0->num_words);  in sdw_slave_read_dp0()
191 	dp0->BRA_flow_controlled = mipi_fwnode_property_read_bool(port,  in sdw_slave_read_dp0()
192 				"mipi-sdw-bra-flow-controlled");  in sdw_slave_read_dp0()
194 	dp0->simple_ch_prep_sm = mipi_fwnode_property_read_bool(port,  in sdw_slave_read_dp0()
195 				"mipi-sdw-simplified-channel-prepare-sm");  in sdw_slave_read_dp0()
197 	dp0->imp_def_interrupts = mipi_fwnode_property_read_bool(port,  in sdw_slave_read_dp0()
198 				"mipi-sdw-imp-def-dp0-interrupts-supported");  in sdw_slave_read_dp0()
200 	nval = fwnode_property_count_u32(port, "mipi-sdw-lane-list");  in sdw_slave_read_dp0()
202 		dp0->num_lanes = nval;  in sdw_slave_read_dp0()
203 		dp0->lane_list = devm_kcalloc(&slave->dev,  in sdw_slave_read_dp0()
204 					      dp0->num_lanes, sizeof(*dp0->lane_list),  in sdw_slave_read_dp0()
206 		if (!dp0->lane_list)  in sdw_slave_read_dp0()
207 			return -ENOMEM;  in sdw_slave_read_dp0()
210 					       "mipi-sdw-lane-list",  in sdw_slave_read_dp0()
211 					       dp0->lane_list, dp0->num_lanes);  in sdw_slave_read_dp0()
236 			 "mipi-sdw-dp-%d-%s-subproperties", bit, type);  in sdw_slave_read_dpn()
240 		node = device_get_named_child_node(&slave->dev, name);  in sdw_slave_read_dpn()
242 			dev_err(&slave->dev, "%s dpN not found\n", name);  in sdw_slave_read_dpn()
243 			return -EIO;  in sdw_slave_read_dpn()
246 		fwnode_property_read_u32(node, "mipi-sdw-port-max-wordlength",  in sdw_slave_read_dpn()
248 		fwnode_property_read_u32(node, "mipi-sdw-port-min-wordlength",  in sdw_slave_read_dpn()
251 		nval = fwnode_property_count_u32(node, "mipi-sdw-port-wordlength-configs");  in sdw_slave_read_dpn()
254 			dpn[i].words = devm_kcalloc(&slave->dev,  in sdw_slave_read_dpn()
260 				return -ENOMEM;  in sdw_slave_read_dpn()
264 					"mipi-sdw-port-wordlength-configs",  in sdw_slave_read_dpn()
270 		fwnode_property_read_u32(node, "mipi-sdw-data-port-type",  in sdw_slave_read_dpn()
274 					 "mipi-sdw-max-grouping-supported",  in sdw_slave_read_dpn()
278 				"mipi-sdw-simplified-channelprepare-sm");  in sdw_slave_read_dpn()
281 					 "mipi-sdw-port-channelprepare-timeout",  in sdw_slave_read_dpn()
285 				"mipi-sdw-imp-def-dpn-interrupts-supported",  in sdw_slave_read_dpn()
288 		fwnode_property_read_u32(node, "mipi-sdw-min-channel-number",  in sdw_slave_read_dpn()
291 		fwnode_property_read_u32(node, "mipi-sdw-max-channel-number",  in sdw_slave_read_dpn()
294 		nval = fwnode_property_count_u32(node, "mipi-sdw-channel-number-list");  in sdw_slave_read_dpn()
297 			dpn[i].channels = devm_kcalloc(&slave->dev,  in sdw_slave_read_dpn()
303 				return -ENOMEM;  in sdw_slave_read_dpn()
307 					"mipi-sdw-channel-number-list",  in sdw_slave_read_dpn()
313 		nval = fwnode_property_count_u32(node, "mipi-sdw-channel-combination-list");  in sdw_slave_read_dpn()
316 			dpn[i].ch_combinations = devm_kcalloc(&slave->dev,  in sdw_slave_read_dpn()
322 				return -ENOMEM;  in sdw_slave_read_dpn()
326 					"mipi-sdw-channel-combination-list",  in sdw_slave_read_dpn()
334 				"mipi-sdw-modes-supported", &dpn[i].modes);  in sdw_slave_read_dpn()
336 		fwnode_property_read_u32(node, "mipi-sdw-max-async-buffer",  in sdw_slave_read_dpn()
340 				"mipi-sdw-block-packing-mode");  in sdw_slave_read_dpn()
342 		fwnode_property_read_u32(node, "mipi-sdw-port-encoding-type",  in sdw_slave_read_dpn()
345 		nval = fwnode_property_count_u32(node, "mipi-sdw-lane-list");  in sdw_slave_read_dpn()
348 			dpn[i].lane_list = devm_kcalloc(&slave->dev,  in sdw_slave_read_dpn()
352 				return -ENOMEM;  in sdw_slave_read_dpn()
355 						       "mipi-sdw-lane-list",  in sdw_slave_read_dpn()
370  * In MIPI DisCo spec for SoundWire, lane mapping for a slave device is done with
371  * mipi-sdw-lane-x-mapping properties, where x is 1..7, and the values for those
372  * properties are mipi-sdw-manager-lane-x or mipi-sdw-peripheral-link-y, where x
378 	struct sdw_slave_prop *prop = &slave->prop;  in sdw_slave_read_lane_mapping()
379 	struct device *dev = &slave->dev;  in sdw_slave_read_lane_mapping()
387 		snprintf(prop_name, sizeof(prop_name), "mipi-sdw-lane-%d-mapping", i);  in sdw_slave_read_lane_mapping()
394 			return -EINVAL;  in sdw_slave_read_lane_mapping()
397 		ret = kstrtou8(&prop_val[len - 1], 10, &lane);  in sdw_slave_read_lane_mapping()
400 		if (in_range(lane, 1, SDW_MAX_LANES - 1))  in sdw_slave_read_lane_mapping()
401 			prop->lane_maps[i] = lane;  in sdw_slave_read_lane_mapping()
408  * sdw_slave_read_prop() - Read Slave properties
413 	struct sdw_slave_prop *prop = &slave->prop;  in sdw_slave_read_prop()
414 	struct device *dev = &slave->dev;  in sdw_slave_read_prop()
419 	device_property_read_u32(dev, "mipi-sdw-sw-interface-revision",  in sdw_slave_read_prop()
420 				 &prop->mipi_revision);  in sdw_slave_read_prop()
422 	prop->wake_capable = mipi_device_property_read_bool(dev,  in sdw_slave_read_prop()
423 				"mipi-sdw-wake-up-unavailable");  in sdw_slave_read_prop()
424 	prop->wake_capable = !prop->wake_capable;  in sdw_slave_read_prop()
426 	prop->test_mode_capable = mipi_device_property_read_bool(dev,  in sdw_slave_read_prop()
427 				"mipi-sdw-test-mode-supported");  in sdw_slave_read_prop()
429 	prop->clk_stop_mode1 = false;  in sdw_slave_read_prop()
431 				"mipi-sdw-clock-stop-mode1-supported"))  in sdw_slave_read_prop()
432 		prop->clk_stop_mode1 = true;  in sdw_slave_read_prop()
434 	prop->simple_clk_stop_capable = mipi_device_property_read_bool(dev,  in sdw_slave_read_prop()
435 			"mipi-sdw-simplified-clockstopprepare-sm-supported");  in sdw_slave_read_prop()
437 	device_property_read_u32(dev, "mipi-sdw-clockstopprepare-timeout",  in sdw_slave_read_prop()
438 				 &prop->clk_stop_timeout);  in sdw_slave_read_prop()
440 	ret = device_property_read_u32(dev, "mipi-sdw-peripheral-channelprepare-timeout",  in sdw_slave_read_prop()
441 				       &prop->ch_prep_timeout);  in sdw_slave_read_prop()
443 		device_property_read_u32(dev, "mipi-sdw-slave-channelprepare-timeout",  in sdw_slave_read_prop()
444 					 &prop->ch_prep_timeout);  in sdw_slave_read_prop()
447 			"mipi-sdw-clockstopprepare-hard-reset-behavior",  in sdw_slave_read_prop()
448 			&prop->reset_behave);  in sdw_slave_read_prop()
450 	prop->high_PHY_capable = mipi_device_property_read_bool(dev,  in sdw_slave_read_prop()
451 			"mipi-sdw-highPHY-capable");  in sdw_slave_read_prop()
453 	prop->paging_support = mipi_device_property_read_bool(dev,  in sdw_slave_read_prop()
454 			"mipi-sdw-paging-support");  in sdw_slave_read_prop()
456 	prop->bank_delay_support = mipi_device_property_read_bool(dev,  in sdw_slave_read_prop()
457 			"mipi-sdw-bank-delay-support");  in sdw_slave_read_prop()
460 			"mipi-sdw-port15-read-behavior", &prop->p15_behave);  in sdw_slave_read_prop()
462 	device_property_read_u32(dev, "mipi-sdw-master-count",  in sdw_slave_read_prop()
463 				 &prop->master_count);  in sdw_slave_read_prop()
465 	device_property_read_u32(dev, "mipi-sdw-source-port-list",  in sdw_slave_read_prop()
466 				 &prop->source_ports);  in sdw_slave_read_prop()
468 	device_property_read_u32(dev, "mipi-sdw-sink-port-list",  in sdw_slave_read_prop()
469 				 &prop->sink_ports);  in sdw_slave_read_prop()
471 	device_property_read_u32(dev, "mipi-sdw-sdca-interrupt-register-list",  in sdw_slave_read_prop()
472 				 &prop->sdca_interrupt_register_list);  in sdw_slave_read_prop()
474 	prop->commit_register_supported = mipi_device_property_read_bool(dev,  in sdw_slave_read_prop()
475 			"mipi-sdw-commit-register-supported");  in sdw_slave_read_prop()
478 	 * Read dp0 properties - we don't rely on the 'mipi-sdw-dp-0-supported'  in sdw_slave_read_prop()
479 	 * property since the 'mipi-sdw-dp0-subproperties' property is logically  in sdw_slave_read_prop()
482 	port = device_get_named_child_node(dev, "mipi-sdw-dp-0-subproperties");  in sdw_slave_read_prop()
486 		prop->dp0_prop = devm_kzalloc(&slave->dev,  in sdw_slave_read_prop()
487 					      sizeof(*prop->dp0_prop),  in sdw_slave_read_prop()
489 		if (!prop->dp0_prop) {  in sdw_slave_read_prop()
491 			return -ENOMEM;  in sdw_slave_read_prop()
494 		sdw_slave_read_dp0(slave, port, prop->dp0_prop);  in sdw_slave_read_prop()
505 	nval = hweight32(prop->source_ports);  in sdw_slave_read_prop()
506 	prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,  in sdw_slave_read_prop()
507 					  sizeof(*prop->src_dpn_prop),  in sdw_slave_read_prop()
509 	if (!prop->src_dpn_prop)  in sdw_slave_read_prop()
510 		return -ENOMEM;  in sdw_slave_read_prop()
513 	sdw_slave_read_dpn(slave, prop->src_dpn_prop, nval,  in sdw_slave_read_prop()
514 			   prop->source_ports, "source");  in sdw_slave_read_prop()
516 	nval = hweight32(prop->sink_ports);  in sdw_slave_read_prop()
517 	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,  in sdw_slave_read_prop()
518 					   sizeof(*prop->sink_dpn_prop),  in sdw_slave_read_prop()
520 	if (!prop->sink_dpn_prop)  in sdw_slave_read_prop()
521 		return -ENOMEM;  in sdw_slave_read_prop()
524 	sdw_slave_read_dpn(slave, prop->sink_dpn_prop, nval,  in sdw_slave_read_prop()
525 			   prop->sink_ports, "sink");  in sdw_slave_read_prop()