smem_state.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __QCOM_SMEM_STATE__
 3#define __QCOM_SMEM_STATE__
 4
 5#include <linux/err.h>
 6
 7struct device_node;
 8struct qcom_smem_state;
 9
10struct qcom_smem_state_ops {
11	int (*update_bits)(void *, u32, u32);
12};
13
14#ifdef CONFIG_QCOM_SMEM_STATE
15
16struct qcom_smem_state *qcom_smem_state_get(struct device *dev, const char *con_id, unsigned *bit);
17struct qcom_smem_state *devm_qcom_smem_state_get(struct device *dev, const char *con_id, unsigned *bit);
18void qcom_smem_state_put(struct qcom_smem_state *);
19
20int qcom_smem_state_update_bits(struct qcom_smem_state *state, u32 mask, u32 value);
21
22struct qcom_smem_state *qcom_smem_state_register(struct device_node *of_node, const struct qcom_smem_state_ops *ops, void *data);
23void qcom_smem_state_unregister(struct qcom_smem_state *state);
24
25#else
26
27static inline struct qcom_smem_state *qcom_smem_state_get(struct device *dev,
28	const char *con_id, unsigned *bit)
29{
30	return ERR_PTR(-EINVAL);
31}
32
33static inline struct qcom_smem_state *devm_qcom_smem_state_get(struct device *dev,
34							       const char *con_id,
35							       unsigned *bit)
36{
37	return ERR_PTR(-EINVAL);
38}
39
40static inline void qcom_smem_state_put(struct qcom_smem_state *state)
41{
42}
43
44static inline int qcom_smem_state_update_bits(struct qcom_smem_state *state,
45	u32 mask, u32 value)
46{
47	return -EINVAL;
48}
49
50static inline struct qcom_smem_state *qcom_smem_state_register(struct device_node *of_node,
51	const struct qcom_smem_state_ops *ops, void *data)
52{
53	return ERR_PTR(-EINVAL);
54}
55
56static inline void qcom_smem_state_unregister(struct qcom_smem_state *state)
57{
58}
59
60#endif
61
62#endif