linux/drivers/soundwire/generic_bandwidth_allocation.c

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
// Copyright(c) 2015-2020 Intel Corporation.

/*
 * Bandwidth management algorithm based on 2^n gears
 *
 */

#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/slab.h>
#include <linux/soundwire/sdw.h>
#include "bus.h"

#define SDW_STRM_RATE_GROUPING …

struct sdw_group_params { … };

struct sdw_group { … };

void sdw_compute_slave_ports(struct sdw_master_runtime *m_rt,
			     struct sdw_transport_data *t_data)
{ … }
EXPORT_SYMBOL(…);

static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt,
				     struct sdw_group_params *params,
				     int *port_bo, int hstop)
{ … }

static void _sdw_compute_port_params(struct sdw_bus *bus,
				     struct sdw_group_params *params, int count)
{ … }

static int sdw_compute_group_params(struct sdw_bus *bus,
				    struct sdw_group_params *params,
				    int *rates, int count)
{ … }

static int sdw_add_element_group_count(struct sdw_group *group,
				       unsigned int rate)
{ … }

static int sdw_get_group_count(struct sdw_bus *bus,
			       struct sdw_group *group)
{ … }

/**
 * sdw_compute_port_params: Compute transport and port parameters
 *
 * @bus: SDW Bus instance
 */
static int sdw_compute_port_params(struct sdw_bus *bus)
{ … }

static int sdw_select_row_col(struct sdw_bus *bus, int clk_freq)
{ … }

/**
 * sdw_compute_bus_params: Compute bus parameters
 *
 * @bus: SDW Bus instance
 */
static int sdw_compute_bus_params(struct sdw_bus *bus)
{ … }

/**
 * sdw_compute_params: Compute bus, transport and port parameters
 *
 * @bus: SDW Bus instance
 */
int sdw_compute_params(struct sdw_bus *bus)
{ … }
EXPORT_SYMBOL(…);

MODULE_LICENSE(…) …;
MODULE_DESCRIPTION(…) …;