1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright(c) 2019-2020 Intel Corporation.
9 #include "bus.h"
13  * devices physically attached on a bus segment. In practice enabling
14  * the bus operation will result in children devices become active and
25  *	sdw-master-N
26  *      |---- revision
27  *      |---- clk_stop_modes
28  *      |---- max_clk_freq
29  *      |---- clk_freq
30  *      |---- clk_gears
31  *      |---- default_row
32  *      |---- default_col
33  *      |---- dynamic_shape
34  *      |---- err_threshold
43 	return sprintf(buf, format_string, md->bus->prop.field);	\
49 sdw_master_attr(max_clk_freq, "%d\n");
50 sdw_master_attr(default_row, "%d\n");
51 sdw_master_attr(default_col, "%d\n");
52 sdw_master_attr(default_frame_rate, "%d\n");
53 sdw_master_attr(dynamic_frame, "%d\n");
54 sdw_master_attr(err_threshold, "%d\n");
63 	for (i = 0; i < md->bus->prop.num_clk_freq; i++)  in clock_frequencies_show()
64 		size += sprintf(buf + size, "%8d ",  in clock_frequencies_show()
65 				md->bus->prop.clk_freq[i]);  in clock_frequencies_show()
79 	for (i = 0; i < md->bus->prop.num_clk_gears; i++)  in clock_gears_show()
80 		size += sprintf(buf + size, "%8d ",  in clock_gears_show()
81 				md->bus->prop.clk_gears[i]);  in clock_gears_show()
122  * sdw_master_device_add() - create a Linux Master Device representation.
123  * @bus: SDW bus instance
127 int sdw_master_device_add(struct sdw_bus *bus, struct device *parent,  in sdw_master_device_add()  argument
134 		return -EINVAL;  in sdw_master_device_add()
138 		return -ENOMEM;  in sdw_master_device_add()
140 	md->dev.bus = &sdw_bus_type;  in sdw_master_device_add()
141 	md->dev.type = &sdw_master_type;  in sdw_master_device_add()
142 	md->dev.parent = parent;  in sdw_master_device_add()
143 	md->dev.groups = master_node_groups;  in sdw_master_device_add()
144 	md->dev.of_node = parent->of_node;  in sdw_master_device_add()
145 	md->dev.fwnode = fwnode;  in sdw_master_device_add()
146 	md->dev.dma_mask = parent->dma_mask;  in sdw_master_device_add()
148 	dev_set_name(&md->dev, "sdw-master-%d-%d", bus->controller_id, bus->link_id);  in sdw_master_device_add()
150 	ret = device_register(&md->dev);  in sdw_master_device_add()
152 		dev_err(parent, "Failed to add master: ret %d\n", ret);  in sdw_master_device_add()
157 		put_device(&md->dev);  in sdw_master_device_add()
162 	md->bus = bus;  in sdw_master_device_add()
163 	bus->dev = &md->dev;  in sdw_master_device_add()
164 	bus->md = md;  in sdw_master_device_add()
166 	pm_runtime_set_autosuspend_delay(&bus->md->dev, SDW_MASTER_SUSPEND_DELAY_MS);  in sdw_master_device_add()
167 	pm_runtime_use_autosuspend(&bus->md->dev);  in sdw_master_device_add()
168 	pm_runtime_mark_last_busy(&bus->md->dev);  in sdw_master_device_add()
169 	pm_runtime_set_active(&bus->md->dev);  in sdw_master_device_add()
170 	pm_runtime_enable(&bus->md->dev);  in sdw_master_device_add()
171 	pm_runtime_idle(&bus->md->dev);  in sdw_master_device_add()
177  * sdw_master_device_del() - delete a Linux Master Device representation.
178  * @bus: bus handle
182 int sdw_master_device_del(struct sdw_bus *bus)  in sdw_master_device_del()  argument
184 	pm_runtime_disable(&bus->md->dev);  in sdw_master_device_del()
185 	device_unregister(bus->dev);  in sdw_master_device_del()