linux/drivers/soundwire/sysfs_slave_dpn.c

// 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 { … };

/*
 * 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 …

#define sdw_dpn_attribute_alloc(field) …

#define sdw_dpn_attr(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) …

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)
{ … }

int sdw_slave_sysfs_dpn_init(struct sdw_slave *slave)
{ … }