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
27  * sdw_master_read_prop() - Read Master properties
32 	struct sdw_master_prop *prop = &bus->prop;  in sdw_master_read_prop()
37 	device_property_read_u32(bus->dev,  in sdw_master_read_prop()
38 				 "mipi-sdw-sw-interface-revision",  in sdw_master_read_prop()
39 				 &prop->revision);  in sdw_master_read_prop()
43 		 "mipi-sdw-link-%d-subproperties", bus->link_id);  in sdw_master_read_prop()
45 	link = device_get_named_child_node(bus->dev, name);  in sdw_master_read_prop()
47 		dev_err(bus->dev, "Master node %s not found\n", name);  in sdw_master_read_prop()
48 		return -EIO;  in sdw_master_read_prop()
52 				      "mipi-sdw-clock-stop-mode0-supported"))  in sdw_master_read_prop()
53 		prop->clk_stop_modes |= BIT(SDW_CLK_STOP_MODE0);  in sdw_master_read_prop()
56 				      "mipi-sdw-clock-stop-mode1-supported"))  in sdw_master_read_prop()
57 		prop->clk_stop_modes |= BIT(SDW_CLK_STOP_MODE1);  in sdw_master_read_prop()
60 				 "mipi-sdw-max-clock-frequency",  in sdw_master_read_prop()
61 				 &prop->max_clk_freq);  in sdw_master_read_prop()
63 	nval = fwnode_property_count_u32(link, "mipi-sdw-clock-frequencies-supported");  in sdw_master_read_prop()
65 		prop->num_clk_freq = nval;  in sdw_master_read_prop()
66 		prop->clk_freq = devm_kcalloc(bus->dev, prop->num_clk_freq,  in sdw_master_read_prop()
67 					      sizeof(*prop->clk_freq),  in sdw_master_read_prop()
69 		if (!prop->clk_freq)  in sdw_master_read_prop()
70 			return -ENOMEM;  in sdw_master_read_prop()
73 				"mipi-sdw-clock-frequencies-supported",  in sdw_master_read_prop()
74 				prop->clk_freq, prop->num_clk_freq);  in sdw_master_read_prop()
81 	if (!prop->max_clk_freq && prop->clk_freq) {  in sdw_master_read_prop()
82 		prop->max_clk_freq = prop->clk_freq[0];  in sdw_master_read_prop()
83 		for (i = 1; i < prop->num_clk_freq; i++) {  in sdw_master_read_prop()
84 			if (prop->clk_freq[i] > prop->max_clk_freq)  in sdw_master_read_prop()
85 				prop->max_clk_freq = prop->clk_freq[i];  in sdw_master_read_prop()
89 	nval = fwnode_property_count_u32(link, "mipi-sdw-supported-clock-gears");  in sdw_master_read_prop()
91 		prop->num_clk_gears = nval;  in sdw_master_read_prop()
92 		prop->clk_gears = devm_kcalloc(bus->dev, prop->num_clk_gears,  in sdw_master_read_prop()
93 					       sizeof(*prop->clk_gears),  in sdw_master_read_prop()
95 		if (!prop->clk_gears)  in sdw_master_read_prop()
96 			return -ENOMEM;  in sdw_master_read_prop()
99 					       "mipi-sdw-supported-clock-gears",  in sdw_master_read_prop()
100 					       prop->clk_gears,  in sdw_master_read_prop()
101 					       prop->num_clk_gears);  in sdw_master_read_prop()
104 	fwnode_property_read_u32(link, "mipi-sdw-default-frame-rate",  in sdw_master_read_prop()
105 				 &prop->default_frame_rate);  in sdw_master_read_prop()
107 	fwnode_property_read_u32(link, "mipi-sdw-default-frame-row-size",  in sdw_master_read_prop()
108 				 &prop->default_row);  in sdw_master_read_prop()
110 	fwnode_property_read_u32(link, "mipi-sdw-default-frame-col-size",  in sdw_master_read_prop()
111 				 &prop->default_col);  in sdw_master_read_prop()
113 	prop->dynamic_frame =  fwnode_property_read_bool(link,  in sdw_master_read_prop()
114 			"mipi-sdw-dynamic-frame-shape");  in sdw_master_read_prop()
116 	fwnode_property_read_u32(link, "mipi-sdw-command-error-threshold",  in sdw_master_read_prop()
117 				 &prop->err_threshold);  in sdw_master_read_prop()
129 	fwnode_property_read_u32(port, "mipi-sdw-port-max-wordlength",  in sdw_slave_read_dp0()
130 				 &dp0->max_word);  in sdw_slave_read_dp0()
132 	fwnode_property_read_u32(port, "mipi-sdw-port-min-wordlength",  in sdw_slave_read_dp0()
133 				 &dp0->min_word);  in sdw_slave_read_dp0()
135 	nval = fwnode_property_count_u32(port, "mipi-sdw-port-wordlength-configs");  in sdw_slave_read_dp0()
138 		dp0->num_words = nval;  in sdw_slave_read_dp0()
139 		dp0->words = devm_kcalloc(&slave->dev,  in sdw_slave_read_dp0()
140 					  dp0->num_words, sizeof(*dp0->words),  in sdw_slave_read_dp0()
142 		if (!dp0->words)  in sdw_slave_read_dp0()
143 			return -ENOMEM;  in sdw_slave_read_dp0()
146 				"mipi-sdw-port-wordlength-configs",  in sdw_slave_read_dp0()
147 				dp0->words, dp0->num_words);  in sdw_slave_read_dp0()
150 	dp0->BRA_flow_controlled = fwnode_property_read_bool(port,  in sdw_slave_read_dp0()
151 				"mipi-sdw-bra-flow-controlled");  in sdw_slave_read_dp0()
153 	dp0->simple_ch_prep_sm = fwnode_property_read_bool(port,  in sdw_slave_read_dp0()
154 				"mipi-sdw-simplified-channel-prepare-sm");  in sdw_slave_read_dp0()
156 	dp0->imp_def_interrupts = fwnode_property_read_bool(port,  in sdw_slave_read_dp0()
157 				"mipi-sdw-imp-def-dp0-interrupts-supported");  in sdw_slave_read_dp0()
178 			 "mipi-sdw-dp-%d-%s-subproperties", bit, type);  in sdw_slave_read_dpn()
182 		node = device_get_named_child_node(&slave->dev, name);  in sdw_slave_read_dpn()
184 			dev_err(&slave->dev, "%s dpN not found\n", name);  in sdw_slave_read_dpn()
185 			return -EIO;  in sdw_slave_read_dpn()
188 		fwnode_property_read_u32(node, "mipi-sdw-port-max-wordlength",  in sdw_slave_read_dpn()
190 		fwnode_property_read_u32(node, "mipi-sdw-port-min-wordlength",  in sdw_slave_read_dpn()
193 		nval = fwnode_property_count_u32(node, "mipi-sdw-port-wordlength-configs");  in sdw_slave_read_dpn()
196 			dpn[i].words = devm_kcalloc(&slave->dev,  in sdw_slave_read_dpn()
201 				return -ENOMEM;  in sdw_slave_read_dpn()
204 					"mipi-sdw-port-wordlength-configs",  in sdw_slave_read_dpn()
208 		fwnode_property_read_u32(node, "mipi-sdw-data-port-type",  in sdw_slave_read_dpn()
212 					 "mipi-sdw-max-grouping-supported",  in sdw_slave_read_dpn()
216 				"mipi-sdw-simplified-channelprepare-sm");  in sdw_slave_read_dpn()
219 					 "mipi-sdw-port-channelprepare-timeout",  in sdw_slave_read_dpn()
223 				"mipi-sdw-imp-def-dpn-interrupts-supported",  in sdw_slave_read_dpn()
226 		fwnode_property_read_u32(node, "mipi-sdw-min-channel-number",  in sdw_slave_read_dpn()
229 		fwnode_property_read_u32(node, "mipi-sdw-max-channel-number",  in sdw_slave_read_dpn()
232 		nval = fwnode_property_count_u32(node, "mipi-sdw-channel-number-list");  in sdw_slave_read_dpn()
235 			dpn[i].channels = devm_kcalloc(&slave->dev,  in sdw_slave_read_dpn()
240 				return -ENOMEM;  in sdw_slave_read_dpn()
243 					"mipi-sdw-channel-number-list",  in sdw_slave_read_dpn()
247 		nval = fwnode_property_count_u32(node, "mipi-sdw-channel-combination-list");  in sdw_slave_read_dpn()
250 			dpn[i].ch_combinations = devm_kcalloc(&slave->dev,  in sdw_slave_read_dpn()
255 				return -ENOMEM;  in sdw_slave_read_dpn()
258 					"mipi-sdw-channel-combination-list",  in sdw_slave_read_dpn()
264 				"mipi-sdw-modes-supported", &dpn[i].modes);  in sdw_slave_read_dpn()
266 		fwnode_property_read_u32(node, "mipi-sdw-max-async-buffer",  in sdw_slave_read_dpn()
270 				"mipi-sdw-block-packing-mode");  in sdw_slave_read_dpn()
272 		fwnode_property_read_u32(node, "mipi-sdw-port-encoding-type",  in sdw_slave_read_dpn()
275 		/* TODO: Read audio mode */  in sdw_slave_read_dpn()
284  * sdw_slave_read_prop() - Read Slave properties
289 	struct sdw_slave_prop *prop = &slave->prop;  in sdw_slave_read_prop()
290 	struct device *dev = &slave->dev;  in sdw_slave_read_prop()
294 	device_property_read_u32(dev, "mipi-sdw-sw-interface-revision",  in sdw_slave_read_prop()
295 				 &prop->mipi_revision);  in sdw_slave_read_prop()
297 	prop->wake_capable = device_property_read_bool(dev,  in sdw_slave_read_prop()
298 				"mipi-sdw-wake-up-unavailable");  in sdw_slave_read_prop()
299 	prop->wake_capable = !prop->wake_capable;  in sdw_slave_read_prop()
301 	prop->test_mode_capable = device_property_read_bool(dev,  in sdw_slave_read_prop()
302 				"mipi-sdw-test-mode-supported");  in sdw_slave_read_prop()
304 	prop->clk_stop_mode1 = false;  in sdw_slave_read_prop()
306 				"mipi-sdw-clock-stop-mode1-supported"))  in sdw_slave_read_prop()
307 		prop->clk_stop_mode1 = true;  in sdw_slave_read_prop()
309 	prop->simple_clk_stop_capable = device_property_read_bool(dev,  in sdw_slave_read_prop()
310 			"mipi-sdw-simplified-clockstopprepare-sm-supported");  in sdw_slave_read_prop()
312 	device_property_read_u32(dev, "mipi-sdw-clockstopprepare-timeout",  in sdw_slave_read_prop()
313 				 &prop->clk_stop_timeout);  in sdw_slave_read_prop()
315 	device_property_read_u32(dev, "mipi-sdw-slave-channelprepare-timeout",  in sdw_slave_read_prop()
316 				 &prop->ch_prep_timeout);  in sdw_slave_read_prop()
319 			"mipi-sdw-clockstopprepare-hard-reset-behavior",  in sdw_slave_read_prop()
320 			&prop->reset_behave);  in sdw_slave_read_prop()
322 	prop->high_PHY_capable = device_property_read_bool(dev,  in sdw_slave_read_prop()
323 			"mipi-sdw-highPHY-capable");  in sdw_slave_read_prop()
325 	prop->paging_support = device_property_read_bool(dev,  in sdw_slave_read_prop()
326 			"mipi-sdw-paging-support");  in sdw_slave_read_prop()
328 	prop->bank_delay_support = device_property_read_bool(dev,  in sdw_slave_read_prop()
329 			"mipi-sdw-bank-delay-support");  in sdw_slave_read_prop()
332 			"mipi-sdw-port15-read-behavior", &prop->p15_behave);  in sdw_slave_read_prop()
334 	device_property_read_u32(dev, "mipi-sdw-master-count",  in sdw_slave_read_prop()
335 				 &prop->master_count);  in sdw_slave_read_prop()
337 	device_property_read_u32(dev, "mipi-sdw-source-port-list",  in sdw_slave_read_prop()
338 				 &prop->source_ports);  in sdw_slave_read_prop()
340 	device_property_read_u32(dev, "mipi-sdw-sink-port-list",  in sdw_slave_read_prop()
341 				 &prop->sink_ports);  in sdw_slave_read_prop()
344 	port = device_get_named_child_node(dev, "mipi-sdw-dp-0-subproperties");  in sdw_slave_read_prop()
348 		prop->dp0_prop = devm_kzalloc(&slave->dev,  in sdw_slave_read_prop()
349 					      sizeof(*prop->dp0_prop),  in sdw_slave_read_prop()
351 		if (!prop->dp0_prop)  in sdw_slave_read_prop()
352 			return -ENOMEM;  in sdw_slave_read_prop()
354 		sdw_slave_read_dp0(slave, port, prop->dp0_prop);  in sdw_slave_read_prop()
363 	nval = hweight32(prop->source_ports);  in sdw_slave_read_prop()
364 	prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,  in sdw_slave_read_prop()
365 					  sizeof(*prop->src_dpn_prop),  in sdw_slave_read_prop()
367 	if (!prop->src_dpn_prop)  in sdw_slave_read_prop()
368 		return -ENOMEM;  in sdw_slave_read_prop()
371 	sdw_slave_read_dpn(slave, prop->src_dpn_prop, nval,  in sdw_slave_read_prop()
372 			   prop->source_ports, "source");  in sdw_slave_read_prop()
374 	nval = hweight32(prop->sink_ports);  in sdw_slave_read_prop()
375 	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,  in sdw_slave_read_prop()
376 					   sizeof(*prop->sink_dpn_prop),  in sdw_slave_read_prop()
378 	if (!prop->sink_dpn_prop)  in sdw_slave_read_prop()
379 		return -ENOMEM;  in sdw_slave_read_prop()
382 	sdw_slave_read_dpn(slave, prop->sink_dpn_prop, nval,  in sdw_slave_read_prop()
383 			   prop->sink_ports, "sink");  in sdw_slave_read_prop()