include/linux/soc/qcom/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
   7 struct device_node;
   8 struct qcom_smem_state;
   9
  10 struct qcom_smem_state_ops {
  11         int (*update_bits)(void *, u32, u32);
  12 };
  13
  14 #ifdef CONFIG_QCOM_SMEM_STATE
  15
  16 struct qcom_smem_state *qcom_smem_state_get(struct device *dev, const char *con_id, unsigned *bit);
  17 struct qcom_smem_state *devm_qcom_smem_state_get(struct device *dev, const char *con_id, unsigned *bit);
  18 void qcom_smem_state_put(struct qcom_smem_state *);
  19
  20 int qcom_smem_state_update_bits(struct qcom_smem_state *state, u32 mask, u32 value);
  21
  22 struct qcom_smem_state *qcom_smem_state_register(struct device_node *of_node, const struct qcom_smem_state_ops *ops, void *data);
  23 void qcom_smem_state_unregister(struct qcom_smem_state *state);
  24
  25 #else
  26
  27 static 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
  33 static 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
  40 static inline void qcom_smem_state_put(struct qcom_smem_state *state)
  41 {
  42 }
  43
  44 static inline int qcom_smem_state_update_bits(struct qcom_smem_state *state,
  45         u32 mask, u32 value)
  46 {
  47         return -EINVAL;
  48 }
  49
  50 static 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
  56 static inline void qcom_smem_state_unregister(struct qcom_smem_state *state)
  57 {
  58 }
  59
  60 #endif
  61
  62 #endif