mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-04 20:19:47 +08:00
f0d8048525
This adds support for i.MX SoC family to interconnect framework. Platform drivers can describe the interconnect graph and several adjustment knobs where icc node bandwidth is converted to a DEV_PM_QOS_MIN_FREQUENCY request. The interconnect provider is probed through the main NOC device and other adjustable nodes on the same graph are found from a fsl,scalable-nodes phandle array property. Signed-off-by: Alexandre Bailon <abailon@baylibre.com> Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Tested-by: Martin Kepplinger <martin.kepplinger@puri.sm> Link: https://lore.kernel.org/r/35920e673df6c04cbbb7d877a7d4ba25fd91a784.1586174566.git.leonard.crestez@nxp.com Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Interconnect framework driver for i.MX SoC
|
|
*
|
|
* Copyright (c) 2019, BayLibre
|
|
* Copyright (c) 2019-2020, NXP
|
|
* Author: Alexandre Bailon <abailon@baylibre.com>
|
|
* Author: Leonard Crestez <leonard.crestez@nxp.com>
|
|
*/
|
|
#ifndef __DRIVERS_INTERCONNECT_IMX_H
|
|
#define __DRIVERS_INTERCONNECT_IMX_H
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#define IMX_ICC_MAX_LINKS 4
|
|
|
|
/*
|
|
* struct imx_icc_node_adj - Describe a dynamic adjustable node
|
|
*/
|
|
struct imx_icc_node_adj_desc {
|
|
unsigned int bw_mul, bw_div;
|
|
const char *phandle_name;
|
|
bool main_noc;
|
|
};
|
|
|
|
/*
|
|
* struct imx_icc_node - Describe an interconnect node
|
|
* @name: name of the node
|
|
* @id: an unique id to identify the node
|
|
* @links: an array of slaves' node id
|
|
* @num_links: number of id defined in links
|
|
*/
|
|
struct imx_icc_node_desc {
|
|
const char *name;
|
|
u16 id;
|
|
u16 links[IMX_ICC_MAX_LINKS];
|
|
u16 num_links;
|
|
const struct imx_icc_node_adj_desc *adj;
|
|
};
|
|
|
|
#define DEFINE_BUS_INTERCONNECT(_name, _id, _adj, ...) \
|
|
{ \
|
|
.id = _id, \
|
|
.name = _name, \
|
|
.adj = _adj, \
|
|
.num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })), \
|
|
.links = { __VA_ARGS__ }, \
|
|
}
|
|
|
|
#define DEFINE_BUS_MASTER(_name, _id, _dest_id) \
|
|
DEFINE_BUS_INTERCONNECT(_name, _id, NULL, _dest_id)
|
|
|
|
#define DEFINE_BUS_SLAVE(_name, _id, _adj) \
|
|
DEFINE_BUS_INTERCONNECT(_name, _id, _adj)
|
|
|
|
int imx_icc_register(struct platform_device *pdev,
|
|
struct imx_icc_node_desc *nodes,
|
|
int nodes_count);
|
|
int imx_icc_unregister(struct platform_device *pdev);
|
|
|
|
#endif /* __DRIVERS_INTERCONNECT_IMX_H */
|