diff options
| author | Leonard Crestez | 2020-04-28 20:03:02 +0300 |
|---|---|---|
| committer | Georgi Djakov | 2020-04-28 20:03:02 +0300 |
| commit | f0d8048525d7d8618a79550cd70de9ce0a6a496f (patch) | |
| tree | 96bbae7798f2f8ba4f9a3ecf746ef6adfdc3f32d /drivers/interconnect/imx/imx.h | |
| parent | 146eee039d7ab236f71edd56b975f4ff49635db9 (diff) | |
interconnect: Add imx core driver
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>
Diffstat (limited to 'drivers/interconnect/imx/imx.h')
| -rw-r--r-- | drivers/interconnect/imx/imx.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/interconnect/imx/imx.h b/drivers/interconnect/imx/imx.h new file mode 100644 index 000000000000..75da51076c68 --- /dev/null +++ b/drivers/interconnect/imx/imx.h @@ -0,0 +1,61 @@ +/* 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 */ |