drivers/remoteproc/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  */
  23 struct 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
  31 static inline
  32 struct 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
  57 static 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
  68 static 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
  79 static 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
  90 static 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
 104 static 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
 116 static 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 */