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Diffstat (limited to 'drivers/interconnect/imx/imx.h')
| -rw-r--r-- | drivers/interconnect/imx/imx.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/interconnect/imx/imx.h b/drivers/interconnect/imx/imx.h new file mode 100644 index 000000000..895907cdc --- /dev/null +++ b/drivers/interconnect/imx/imx.h @@ -0,0 +1,108 @@ +/* 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/interconnect-provider.h> +#include <linux/kernel.h> + +#define IMX_ICC_MAX_LINKS 4 + +/* + * High throughput priority level in Regulator mode + * Read Priority in Fixed/Limiter mode + */ +#define PRIORITY0_SHIFT 0 +/* + * Low throughput priority level in Regulator mode + * Write Priority in Fixed/Limiter mode + */ +#define PRIORITY1_SHIFT 8 +#define PRIORITY_MASK 0x7 + +#define PRIORITY_COMP_MARK BIT(31) /* Must set */ + +#define IMX_NOC_MODE_FIXED 0 +#define IMX_NOC_MODE_LIMITER 1 +#define IMX_NOC_MODE_BYPASS 2 +#define IMX_NOC_MODE_REGULATOR 3 +#define IMX_NOC_MODE_UNCONFIGURED 0xFF + +#define IMX_NOC_PRIO_REG 0x8 +#define IMX_NOC_MODE_REG 0xC +#define IMX_NOC_BANDWIDTH_REG 0x10 +#define IMX_NOC_SATURATION 0x14 +#define IMX_NOC_EXT_CTL_REG 0x18 + +struct imx_icc_provider { + void __iomem *noc_base; + struct icc_provider provider; +}; + +/* + * 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; +}; + +/* + * struct imx_icc_noc_setting - Describe an interconnect node setting + * @reg: register offset inside the NoC + * @prio_level: priority level + * @mode: functional mode + * @ext_control: external input control + */ +struct imx_icc_noc_setting { + u32 reg; + u32 prio_level; + u32 mode; + u32 ext_control; +}; + +#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, + struct imx_icc_noc_setting *noc_settings); +void imx_icc_unregister(struct platform_device *pdev); + +#endif /* __DRIVERS_INTERCONNECT_IMX_H */ |