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
ti_sci_proc_of_get_tsp(struct device * dev,const struct ti_sci_handle * sci)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
ti_sci_proc_request(struct ti_sci_proc * tsp)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
ti_sci_proc_release(struct ti_sci_proc * tsp)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
ti_sci_proc_handover(struct ti_sci_proc * tsp)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
ti_sci_proc_set_config(struct ti_sci_proc * tsp,u64 boot_vector,u32 cfg_set,u32 cfg_clr)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
ti_sci_proc_set_control(struct ti_sci_proc * tsp,u32 ctrl_set,u32 ctrl_clr)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
ti_sci_proc_get_status(struct ti_sci_proc * tsp,u64 * boot_vector,u32 * cfg_flags,u32 * ctrl_flags,u32 * status_flags)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 */
131