1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright(c) 2015-2020 Intel Corporation.
14  * Slave sysfs
18  * The sysfs for Slave reflects the MIPI description as given
24  *	|---- status
25  *	|---- device_number
26  *	|---- modalias
27  *	|---- dev-properties
28  *		|---- mipi_revision
29  *		|---- wake_capable
30  *		|---- test_mode_capable
31  *		|---- clk_stop_mode1
32  *		|---- simple_clk_stop_capable
33  *		|---- clk_stop_timeout
34  *		|---- ch_prep_timeout
35  *		|---- reset_behave
36  *		|---- high_PHY_capable
37  *		|---- paging_support
38  *		|---- bank_delay_support
39  *		|---- p15_behave
40  *		|---- master_count
41  *		|---- source_ports
42  *		|---- sink_ports
43  *	|---- dp0
44  *		|---- max_word
45  *		|---- min_word
46  *		|---- words
47  *		|---- BRA_flow_controlled
48  *		|---- simple_ch_prep_sm
49  *		|---- imp_def_interrupts
50  *	|---- dpN_<sink/src>
51  *		|---- max_word
52  *		|---- min_word
53  *		|---- words
54  *		|---- type
55  *		|---- max_grouping
56  *		|---- simple_ch_prep_sm
57  *		|---- ch_prep_timeout
58  *		|---- imp_def_interrupts
59  *		|---- min_ch
60  *		|---- max_ch
61  *		|---- channels
62  *		|---- ch_combinations
63  *		|---- max_async_buffer
64  *		|---- block_pack_mode
65  *		|---- port_encoding
70 static ssize_t field##_show(struct device *dev,			\
74 	struct sdw_slave *slave = dev_to_sdw_dev(dev);		\
75 	return sprintf(buf, format_string, slave->prop.field);	\
95 static ssize_t modalias_show(struct device *dev,  in modalias_show()  argument
98 	struct sdw_slave *slave = dev_to_sdw_dev(dev);  in modalias_show()  local
100 	return sdw_slave_modalias(slave, buf, 256);  in modalias_show()
108 ATTRIBUTE_GROUPS(slave);
131  * for device-level properties
135 	.name = "dev-properties",
143 static ssize_t field##_show(struct device *dev,				\
147 	struct sdw_slave *slave = dev_to_sdw_dev(dev);			\
148 	return sprintf(buf, format_string, slave->prop.dp0_prop->field);\
158 static ssize_t words_show(struct device *dev,  in words_show()  argument
161 	struct sdw_slave *slave = dev_to_sdw_dev(dev);  in words_show()  local
165 	for (i = 0; i < slave->prop.dp0_prop->num_words; i++)  in words_show()
167 				slave->prop.dp0_prop->words[i]);  in words_show()
186  * for dp0-level properties
193 int sdw_slave_sysfs_init(struct sdw_slave *slave)  in sdw_slave_sysfs_init()  argument
197 	ret = devm_device_add_groups(&slave->dev, slave_groups);  in sdw_slave_sysfs_init()
201 	ret = devm_device_add_group(&slave->dev, &sdw_slave_dev_attr_group);  in sdw_slave_sysfs_init()
205 	if (slave->prop.dp0_prop) {  in sdw_slave_sysfs_init()
206 		ret = devm_device_add_group(&slave->dev, &dp0_group);  in sdw_slave_sysfs_init()
211 	if (slave->prop.source_ports || slave->prop.sink_ports) {  in sdw_slave_sysfs_init()
212 		ret = sdw_slave_sysfs_dpn_init(slave);  in sdw_slave_sysfs_init()
232 static ssize_t status_show(struct device *dev,  in status_show()  argument
235 	struct sdw_slave *slave = dev_to_sdw_dev(dev);  in status_show()  local
237 	return sprintf(buf, "%s\n", slave_status[slave->status]);  in status_show()
241 static ssize_t device_number_show(struct device *dev,  in device_number_show()  argument
244 	struct sdw_slave *slave = dev_to_sdw_dev(dev);  in device_number_show()  local
246 	if (slave->status == SDW_SLAVE_UNATTACHED)  in device_number_show()
249 		return sprintf(buf, "%d", slave->dev_num);  in device_number_show()