ti_sci_proc.h

  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * Texas Instruments TI-SCI Processor Controller Helper Functions
  4 *
  5 * Copyright (C) 2018-2020 Texas Instruments Incorporated - https://www.ti.com/
  6 *	Suman Anna <s-anna@ti.com>
  7 */
  8
  9#ifndef REMOTEPROC_TI_SCI_PROC_H
 10#define REMOTEPROC_TI_SCI_PROC_H
 11
 12#include <linux/soc/ti/ti_sci_protocol.h>
 13
 14/**
 15 * struct ti_sci_proc - structure representing a processor control client
 16 * @sci: cached TI-SCI protocol handle
 17 * @ops: cached TI-SCI proc ops
 18 * @dev: cached client device pointer
 19 * @proc_id: processor id for the consumer remoteproc device
 20 * @host_id: host id to pass the control over for this consumer remoteproc
 21 *	     device
 22 */
 23struct ti_sci_proc {
 24	const struct ti_sci_handle *sci;
 25	const struct ti_sci_proc_ops *ops;
 26	struct device *dev;
 27	u8 proc_id;
 28	u8 host_id;
 29};
 30
 31static inline
 32struct ti_sci_proc *ti_sci_proc_of_get_tsp(struct device *dev,
 33					   const struct ti_sci_handle *sci)
 34{
 35	struct ti_sci_proc *tsp;
 36	u32 temp[2];
 37	int ret;
 38
 39	ret = of_property_read_u32_array(dev_of_node(dev), "ti,sci-proc-ids",
 40					 temp, 2);
 41	if (ret < 0)
 42		return ERR_PTR(ret);
 43
 44	tsp = devm_kzalloc(dev, sizeof(*tsp), GFP_KERNEL);
 45	if (!tsp)
 46		return ERR_PTR(-ENOMEM);
 47
 48	tsp->dev = dev;
 49	tsp->sci = sci;
 50	tsp->ops = &sci->ops.proc_ops;
 51	tsp->proc_id = temp[0];
 52	tsp->host_id = temp[1];
 53
 54	return tsp;
 55}
 56
 57static inline int ti_sci_proc_request(struct ti_sci_proc *tsp)
 58{
 59	int ret;
 60
 61	ret = tsp->ops->request(tsp->sci, tsp->proc_id);
 62	if (ret)
 63		dev_err(tsp->dev, "ti-sci processor request failed: %d\n",
 64			ret);
 65	return ret;
 66}
 67
 68static inline int ti_sci_proc_release(struct ti_sci_proc *tsp)
 69{
 70	int ret;
 71
 72	ret = tsp->ops->release(tsp->sci, tsp->proc_id);
 73	if (ret)
 74		dev_err(tsp->dev, "ti-sci processor release failed: %d\n",
 75			ret);
 76	return ret;
 77}
 78
 79static inline int ti_sci_proc_handover(struct ti_sci_proc *tsp)
 80{
 81	int ret;
 82
 83	ret = tsp->ops->handover(tsp->sci, tsp->proc_id, tsp->host_id);
 84	if (ret)
 85		dev_err(tsp->dev, "ti-sci processor handover of %d to %d failed: %d\n",
 86			tsp->proc_id, tsp->host_id, ret);
 87	return ret;
 88}
 89
 90static inline int ti_sci_proc_set_config(struct ti_sci_proc *tsp,
 91					 u64 boot_vector,
 92					 u32 cfg_set, u32 cfg_clr)
 93{
 94	int ret;
 95
 96	ret = tsp->ops->set_config(tsp->sci, tsp->proc_id, boot_vector,
 97				   cfg_set, cfg_clr);
 98	if (ret)
 99		dev_err(tsp->dev, "ti-sci processor set_config failed: %d\n",
100			ret);
101	return ret;
102}
103
104static inline int ti_sci_proc_set_control(struct ti_sci_proc *tsp,
105					  u32 ctrl_set, u32 ctrl_clr)
106{
107	int ret;
108
109	ret = tsp->ops->set_control(tsp->sci, tsp->proc_id, ctrl_set, ctrl_clr);
110	if (ret)
111		dev_err(tsp->dev, "ti-sci processor set_control failed: %d\n",
112			ret);
113	return ret;
114}
115
116static inline int ti_sci_proc_get_status(struct ti_sci_proc *tsp,
117					 u64 *boot_vector, u32 *cfg_flags,
118					 u32 *ctrl_flags, u32 *status_flags)
119{
120	int ret;
121
122	ret = tsp->ops->get_status(tsp->sci, tsp->proc_id, boot_vector,
123				   cfg_flags, ctrl_flags, status_flags);
124	if (ret)
125		dev_err(tsp->dev, "ti-sci processor get_status failed: %d\n",
126			ret);
127	return ret;
128}
129
130#endif /* REMOTEPROC_TI_SCI_PROC_H */