--- /dev/null
+What: /sys/bus/soundwire/devices/sdw:.../dev-properties/mipi_revision
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/wake_capable
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/test_mode_capable
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/clk_stop_mode1
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/simple_clk_stop_capable
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/clk_stop_timeout
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/ch_prep_timeout
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/reset_behave
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/high_PHY_capable
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/paging_support
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/bank_delay_support
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/p15_behave
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/master_count
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/source_ports
+ /sys/bus/soundwire/devices/sdw:.../dev-properties/sink_ports
+
+Date: May 2020
+
+Contact: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
+ Bard Liao <yung-chuan.liao@linux.intel.com>
+ Vinod Koul <vkoul@kernel.org>
+
+Description: SoundWire Slave DisCo properties.
+ These properties are defined by MIPI DisCo Specification
+ for SoundWire. They define various properties of the
+ SoundWire Slave and are used by the bus to configure
+ the Slave
+
+
+What: /sys/bus/soundwire/devices/sdw:.../dp0/max_word
+ /sys/bus/soundwire/devices/sdw:.../dp0/min_word
+ /sys/bus/soundwire/devices/sdw:.../dp0/words
+ /sys/bus/soundwire/devices/sdw:.../dp0/BRA_flow_controlled
+ /sys/bus/soundwire/devices/sdw:.../dp0/simple_ch_prep_sm
+ /sys/bus/soundwire/devices/sdw:.../dp0/imp_def_interrupts
+
+Date: May 2020
+
+Contact: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
+ Bard Liao <yung-chuan.liao@linux.intel.com>
+ Vinod Koul <vkoul@kernel.org>
+
+Description: SoundWire Slave Data Port-0 DisCo properties.
+ These properties are defined by MIPI DisCo Specification
+ for the SoundWire. They define various properties of the
+ Data port 0 are used by the bus to configure the Data Port 0.
+
+
+What: /sys/bus/soundwire/devices/sdw:.../dpN_src/max_word
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/min_word
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/words
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/type
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/max_grouping
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/simple_ch_prep_sm
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/ch_prep_timeout
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/imp_def_interrupts
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/min_ch
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/max_ch
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/channels
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/ch_combinations
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/max_async_buffer
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/block_pack_mode
+ /sys/bus/soundwire/devices/sdw:.../dpN_src/port_encoding
+
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/max_word
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/min_word
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/words
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/type
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/max_grouping
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/simple_ch_prep_sm
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/ch_prep_timeout
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/imp_def_interrupts
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/min_ch
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/max_ch
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/channels
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/ch_combinations
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/max_async_buffer
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/block_pack_mode
+ /sys/bus/soundwire/devices/sdw:.../dpN_sink/port_encoding
+
+Date: May 2020
+
+Contact: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
+ Bard Liao <yung-chuan.liao@linux.intel.com>
+ Vinod Koul <vkoul@kernel.org>
+
+Description: SoundWire Slave Data Source/Sink Port-N DisCo properties.
+ These properties are defined by MIPI DisCo Specification
+ for SoundWire. They define various properties of the
+ Source/Sink Data port N and are used by the bus to configure
+ the Data Port N.
#
#Bus Objs
-soundwire-bus-objs := bus_type.o bus.o master.o slave.o mipi_disco.o stream.o
+soundwire-bus-objs := bus_type.o bus.o master.o slave.o mipi_disco.o stream.o \
+ sysfs_slave.o sysfs_slave_dpn.o
obj-$(CONFIG_SOUNDWIRE) += soundwire-bus.o
ifdef CONFIG_DEBUG_FS
#include <linux/soundwire/sdw_registers.h>
#include <linux/soundwire/sdw.h>
#include "bus.h"
+#include "sysfs_local.h"
static DEFINE_IDA(sdw_ida);
#define SDW_UNATTACH_REQUEST_MASTER_RESET BIT(0)
void sdw_clear_slave_status(struct sdw_bus *bus, u32 request);
+int sdw_slave_modalias(const struct sdw_slave *slave, char *buf, size_t size);
#endif /* __SDW_BUS_H */
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_type.h>
#include "bus.h"
+#include "sysfs_local.h"
/**
* sdw_get_device_id - find the matching SoundWire device id
return ret;
}
-static int sdw_slave_modalias(const struct sdw_slave *slave, char *buf,
- size_t size)
+int sdw_slave_modalias(const struct sdw_slave *slave, char *buf, size_t size)
{
/* modalias is sdw:m<mfg_id>p<part_id> */
if (slave->ops && slave->ops->read_prop)
slave->ops->read_prop(slave);
+ /* init the sysfs as we have properties now */
+ ret = sdw_slave_sysfs_init(slave);
+ if (ret < 0)
+ dev_warn(dev, "Slave sysfs init failed:%d\n", ret);
+
/*
* Check for valid clk_stop_timeout, use DisCo worst case value of
* 300ms
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright(c) 2015-2020 Intel Corporation. */
+
+#ifndef __SDW_SYSFS_LOCAL_H
+#define __SDW_SYSFS_LOCAL_H
+
+/*
+ * SDW sysfs APIs -
+ */
+
+int sdw_slave_sysfs_init(struct sdw_slave *slave);
+int sdw_slave_sysfs_dpn_init(struct sdw_slave *slave);
+
+#endif /* __SDW_SYSFS_LOCAL_H */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright(c) 2015-2020 Intel Corporation.
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/soundwire/sdw.h>
+#include <linux/soundwire/sdw_type.h>
+#include "bus.h"
+#include "sysfs_local.h"
+
+/*
+ * Slave sysfs
+ */
+
+/*
+ * The sysfs for Slave reflects the MIPI description as given
+ * in the MIPI DisCo spec
+ *
+ * Base file is device
+ * |---- modalias
+ * |---- dev-properties
+ * |---- mipi_revision
+ * |---- wake_capable
+ * |---- test_mode_capable
+ * |---- clk_stop_mode1
+ * |---- simple_clk_stop_capable
+ * |---- clk_stop_timeout
+ * |---- ch_prep_timeout
+ * |---- reset_behave
+ * |---- high_PHY_capable
+ * |---- paging_support
+ * |---- bank_delay_support
+ * |---- p15_behave
+ * |---- master_count
+ * |---- source_ports
+ * |---- sink_ports
+ * |---- dp0
+ * |---- max_word
+ * |---- min_word
+ * |---- words
+ * |---- BRA_flow_controlled
+ * |---- simple_ch_prep_sm
+ * |---- imp_def_interrupts
+ * |---- dpN_<sink/src>
+ * |---- max_word
+ * |---- min_word
+ * |---- words
+ * |---- type
+ * |---- max_grouping
+ * |---- simple_ch_prep_sm
+ * |---- ch_prep_timeout
+ * |---- imp_def_interrupts
+ * |---- min_ch
+ * |---- max_ch
+ * |---- channels
+ * |---- ch_combinations
+ * |---- max_async_buffer
+ * |---- block_pack_mode
+ * |---- port_encoding
+ *
+ */
+
+#define sdw_slave_attr(field, format_string) \
+static ssize_t field##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ struct sdw_slave *slave = dev_to_sdw_dev(dev); \
+ return sprintf(buf, format_string, slave->prop.field); \
+} \
+static DEVICE_ATTR_RO(field)
+
+sdw_slave_attr(mipi_revision, "0x%x\n");
+sdw_slave_attr(wake_capable, "%d\n");
+sdw_slave_attr(test_mode_capable, "%d\n");
+sdw_slave_attr(clk_stop_mode1, "%d\n");
+sdw_slave_attr(simple_clk_stop_capable, "%d\n");
+sdw_slave_attr(clk_stop_timeout, "%d\n");
+sdw_slave_attr(ch_prep_timeout, "%d\n");
+sdw_slave_attr(reset_behave, "%d\n");
+sdw_slave_attr(high_PHY_capable, "%d\n");
+sdw_slave_attr(paging_support, "%d\n");
+sdw_slave_attr(bank_delay_support, "%d\n");
+sdw_slave_attr(p15_behave, "%d\n");
+sdw_slave_attr(master_count, "%d\n");
+sdw_slave_attr(source_ports, "0x%x\n");
+sdw_slave_attr(sink_ports, "0x%x\n");
+
+static ssize_t modalias_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct sdw_slave *slave = dev_to_sdw_dev(dev);
+
+ return sdw_slave_modalias(slave, buf, 256);
+}
+static DEVICE_ATTR_RO(modalias);
+
+static struct attribute *slave_attrs[] = {
+ &dev_attr_modalias.attr,
+ NULL,
+};
+ATTRIBUTE_GROUPS(slave);
+
+static struct attribute *slave_dev_attrs[] = {
+ &dev_attr_mipi_revision.attr,
+ &dev_attr_wake_capable.attr,
+ &dev_attr_test_mode_capable.attr,
+ &dev_attr_clk_stop_mode1.attr,
+ &dev_attr_simple_clk_stop_capable.attr,
+ &dev_attr_clk_stop_timeout.attr,
+ &dev_attr_ch_prep_timeout.attr,
+ &dev_attr_reset_behave.attr,
+ &dev_attr_high_PHY_capable.attr,
+ &dev_attr_paging_support.attr,
+ &dev_attr_bank_delay_support.attr,
+ &dev_attr_p15_behave.attr,
+ &dev_attr_master_count.attr,
+ &dev_attr_source_ports.attr,
+ &dev_attr_sink_ports.attr,
+ NULL,
+};
+
+/*
+ * we don't use ATTRIBUTES_GROUP here since we want to add a subdirectory
+ * for device-level properties
+ */
+static struct attribute_group sdw_slave_dev_attr_group = {
+ .attrs = slave_dev_attrs,
+ .name = "dev-properties",
+};
+
+/*
+ * DP0 sysfs
+ */
+
+#define sdw_dp0_attr(field, format_string) \
+static ssize_t field##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ struct sdw_slave *slave = dev_to_sdw_dev(dev); \
+ return sprintf(buf, format_string, slave->prop.dp0_prop->field);\
+} \
+static DEVICE_ATTR_RO(field)
+
+sdw_dp0_attr(max_word, "%d\n");
+sdw_dp0_attr(min_word, "%d\n");
+sdw_dp0_attr(BRA_flow_controlled, "%d\n");
+sdw_dp0_attr(simple_ch_prep_sm, "%d\n");
+sdw_dp0_attr(imp_def_interrupts, "0x%x\n");
+
+static ssize_t words_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct sdw_slave *slave = dev_to_sdw_dev(dev);
+ ssize_t size = 0;
+ int i;
+
+ for (i = 0; i < slave->prop.dp0_prop->num_words; i++)
+ size += sprintf(buf + size, "%d ",
+ slave->prop.dp0_prop->words[i]);
+ size += sprintf(buf + size, "\n");
+
+ return size;
+}
+static DEVICE_ATTR_RO(words);
+
+static struct attribute *dp0_attrs[] = {
+ &dev_attr_max_word.attr,
+ &dev_attr_min_word.attr,
+ &dev_attr_words.attr,
+ &dev_attr_BRA_flow_controlled.attr,
+ &dev_attr_simple_ch_prep_sm.attr,
+ &dev_attr_imp_def_interrupts.attr,
+ NULL,
+};
+
+/*
+ * we don't use ATTRIBUTES_GROUP here since we want to add a subdirectory
+ * for dp0-level properties
+ */
+static const struct attribute_group dp0_group = {
+ .attrs = dp0_attrs,
+ .name = "dp0",
+};
+
+int sdw_slave_sysfs_init(struct sdw_slave *slave)
+{
+ int ret;
+
+ ret = devm_device_add_groups(&slave->dev, slave_groups);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_device_add_group(&slave->dev, &sdw_slave_dev_attr_group);
+ if (ret < 0)
+ return ret;
+
+ if (slave->prop.dp0_prop) {
+ ret = devm_device_add_group(&slave->dev, &dp0_group);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (slave->prop.source_ports || slave->prop.sink_ports) {
+ ret = sdw_slave_sysfs_dpn_init(slave);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright(c) 2015-2020 Intel Corporation.
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/soundwire/sdw.h>
+#include <linux/soundwire/sdw_type.h>
+#include "bus.h"
+#include "sysfs_local.h"
+
+struct dpn_attribute {
+ struct device_attribute dev_attr;
+ int N;
+ int dir;
+ const char *format_string;
+};
+
+/*
+ * Since we can't use ARRAY_SIZE, hard-code number of dpN attributes.
+ * This needs to be updated when adding new attributes - an error will be
+ * flagged on a mismatch.
+ */
+#define SDW_DPN_ATTRIBUTES 15
+
+#define sdw_dpn_attribute_alloc(field) \
+static int field##_attribute_alloc(struct device *dev, \
+ struct attribute **res, \
+ int N, int dir, \
+ const char *format_string) \
+{ \
+ struct dpn_attribute *dpn_attr; \
+ \
+ dpn_attr = devm_kzalloc(dev, sizeof(*dpn_attr), GFP_KERNEL); \
+ if (!dpn_attr) \
+ return -ENOMEM; \
+ dpn_attr->N = N; \
+ dpn_attr->dir = dir; \
+ dpn_attr->format_string = format_string; \
+ dpn_attr->dev_attr.attr.name = __stringify(field); \
+ dpn_attr->dev_attr.attr.mode = 0444; \
+ dpn_attr->dev_attr.show = field##_show; \
+ \
+ *res = &dpn_attr->dev_attr.attr; \
+ \
+ return 0; \
+}
+
+#define sdw_dpn_attr(field) \
+ \
+static ssize_t field##_dpn_show(struct sdw_slave *slave, \
+ int N, \
+ int dir, \
+ const char *format_string, \
+ char *buf) \
+{ \
+ struct sdw_dpn_prop *dpn; \
+ unsigned long mask; \
+ int bit; \
+ int i; \
+ \
+ if (dir) { \
+ dpn = slave->prop.src_dpn_prop; \
+ mask = slave->prop.source_ports; \
+ } else { \
+ dpn = slave->prop.sink_dpn_prop; \
+ mask = slave->prop.sink_ports; \
+ } \
+ \
+ i = 0; \
+ for_each_set_bit(bit, &mask, 32) { \
+ if (bit == N) { \
+ return sprintf(buf, format_string, \
+ dpn[i].field); \
+ } \
+ i++; \
+ } \
+ return -EINVAL; \
+} \
+ \
+static ssize_t field##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ struct sdw_slave *slave = dev_to_sdw_dev(dev); \
+ struct dpn_attribute *dpn_attr = \
+ container_of(attr, struct dpn_attribute, dev_attr); \
+ \
+ return field##_dpn_show(slave, \
+ dpn_attr->N, dpn_attr->dir, \
+ dpn_attr->format_string, \
+ buf); \
+} \
+sdw_dpn_attribute_alloc(field)
+
+sdw_dpn_attr(imp_def_interrupts);
+sdw_dpn_attr(max_word);
+sdw_dpn_attr(min_word);
+sdw_dpn_attr(type);
+sdw_dpn_attr(max_grouping);
+sdw_dpn_attr(simple_ch_prep_sm);
+sdw_dpn_attr(ch_prep_timeout);
+sdw_dpn_attr(max_ch);
+sdw_dpn_attr(min_ch);
+sdw_dpn_attr(max_async_buffer);
+sdw_dpn_attr(block_pack_mode);
+sdw_dpn_attr(port_encoding);
+
+#define sdw_dpn_array_attr(field) \
+ \
+static ssize_t field##_dpn_show(struct sdw_slave *slave, \
+ int N, \
+ int dir, \
+ const char *format_string, \
+ char *buf) \
+{ \
+ struct sdw_dpn_prop *dpn; \
+ unsigned long mask; \
+ ssize_t size = 0; \
+ int bit; \
+ int i; \
+ int j; \
+ \
+ if (dir) { \
+ dpn = slave->prop.src_dpn_prop; \
+ mask = slave->prop.source_ports; \
+ } else { \
+ dpn = slave->prop.sink_dpn_prop; \
+ mask = slave->prop.sink_ports; \
+ } \
+ \
+ i = 0; \
+ for_each_set_bit(bit, &mask, 32) { \
+ if (bit == N) { \
+ for (j = 0; j < dpn[i].num_##field; j++) \
+ size += sprintf(buf + size, \
+ format_string, \
+ dpn[i].field[j]); \
+ size += sprintf(buf + size, "\n"); \
+ return size; \
+ } \
+ i++; \
+ } \
+ return -EINVAL; \
+} \
+static ssize_t field##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ struct sdw_slave *slave = dev_to_sdw_dev(dev); \
+ struct dpn_attribute *dpn_attr = \
+ container_of(attr, struct dpn_attribute, dev_attr); \
+ \
+ return field##_dpn_show(slave, \
+ dpn_attr->N, dpn_attr->dir, \
+ dpn_attr->format_string, \
+ buf); \
+} \
+sdw_dpn_attribute_alloc(field)
+
+sdw_dpn_array_attr(words);
+sdw_dpn_array_attr(ch_combinations);
+sdw_dpn_array_attr(channels);
+
+static int add_all_attributes(struct device *dev, int N, int dir)
+{
+ struct attribute **dpn_attrs;
+ struct attribute_group *dpn_group;
+ int i = 0;
+ int ret;
+
+ /* allocate attributes, last one is NULL */
+ dpn_attrs = devm_kcalloc(dev, SDW_DPN_ATTRIBUTES + 1,
+ sizeof(struct attribute *),
+ GFP_KERNEL);
+ if (!dpn_attrs)
+ return -ENOMEM;
+
+ ret = max_word_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = min_word_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = words_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = type_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = max_grouping_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = simple_ch_prep_sm_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = ch_prep_timeout_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = imp_def_interrupts_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "0x%x\n");
+ if (ret < 0)
+ return ret;
+
+ ret = min_ch_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = max_ch_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = channels_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = ch_combinations_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = max_async_buffer_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = block_pack_mode_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ ret = port_encoding_attribute_alloc(dev, &dpn_attrs[i++],
+ N, dir, "%d\n");
+ if (ret < 0)
+ return ret;
+
+ /* paranioa check for editing mistakes */
+ if (i != SDW_DPN_ATTRIBUTES) {
+ dev_err(dev, "mismatch in attributes, allocated %d got %d\n",
+ SDW_DPN_ATTRIBUTES, i);
+ return -EINVAL;
+ }
+
+ dpn_group = devm_kzalloc(dev, sizeof(*dpn_group), GFP_KERNEL);
+ if (!dpn_group)
+ return -ENOMEM;
+
+ dpn_group->attrs = dpn_attrs;
+ dpn_group->name = devm_kasprintf(dev, GFP_KERNEL, "dp%d_%s",
+ N, dir ? "src" : "sink");
+ if (!dpn_group->name)
+ return -ENOMEM;
+
+ ret = devm_device_add_group(dev, dpn_group);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+int sdw_slave_sysfs_dpn_init(struct sdw_slave *slave)
+{
+ unsigned long mask;
+ int ret;
+ int i;
+
+ mask = slave->prop.source_ports;
+ for_each_set_bit(i, &mask, 32) {
+ ret = add_all_attributes(&slave->dev, i, 1);
+ if (ret < 0)
+ return ret;
+ }
+
+ mask = slave->prop.sink_ports;
+ for_each_set_bit(i, &mask, 32) {
+ ret = add_all_attributes(&slave->dev, i, 0);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
projects / users / dwmw2 / linux.git / commitdiff