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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Texas Instruments TI-SCI Processor Controller Helper Functions4 *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_H10#define REMOTEPROC_TI_SCI_PROC_H11 12#include <linux/soc/ti/ti_sci_protocol.h>13 14/**15 * struct ti_sci_proc - structure representing a processor control client16 * @sci: cached TI-SCI protocol handle17 * @ops: cached TI-SCI proc ops18 * @dev: cached client device pointer19 * @proc_id: processor id for the consumer remoteproc device20 * @host_id: host id to pass the control over for this consumer remoteproc21 * device22 */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 inline32struct 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 */131