6 #include <linux/wait.h>
7 #include <linux/workqueue.h>
8 #include <linux/blkdev.h>
9 #include <linux/interrupt.h>
11 typedef u32 mbox_msg_t;
14 typedef int __bitwise omap_mbox_irq_t;
15 #define IRQ_TX ((__force omap_mbox_irq_t) 1)
16 #define IRQ_RX ((__force omap_mbox_irq_t) 2)
18 typedef int __bitwise omap_mbox_type_t;
19 #define OMAP_MBOX_TYPE1 ((__force omap_mbox_type_t) 1)
20 #define OMAP_MBOX_TYPE2 ((__force omap_mbox_type_t) 2)
22 struct omap_mbox_ops {
23 omap_mbox_type_t type;
24 int (*startup)(struct omap_mbox *mbox);
25 void (*shutdown)(struct omap_mbox *mbox);
27 mbox_msg_t (*fifo_read)(struct omap_mbox *mbox);
28 void (*fifo_write)(struct omap_mbox *mbox, mbox_msg_t msg);
29 int (*fifo_empty)(struct omap_mbox *mbox);
30 int (*fifo_full)(struct omap_mbox *mbox);
32 void (*enable_irq)(struct omap_mbox *mbox,
34 void (*disable_irq)(struct omap_mbox *mbox,
36 void (*ack_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq);
37 int (*is_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq);
39 void (*save_ctx)(struct omap_mbox *mbox);
40 void (*restore_ctx)(struct omap_mbox *mbox);
43 struct omap_mbox_queue {
45 struct request_queue *queue;
46 struct work_struct work;
47 struct tasklet_struct tasklet;
48 int (*callback)(void *);
49 struct omap_mbox *mbox;
56 struct omap_mbox_queue *txq, *rxq;
58 struct omap_mbox_ops *ops;
60 mbox_msg_t seq_snd, seq_rcv;
64 struct omap_mbox *next;
67 void (*err_notify)(void);
70 int omap_mbox_msg_send(struct omap_mbox *, mbox_msg_t msg);
71 void omap_mbox_init_seq(struct omap_mbox *);
73 struct omap_mbox *omap_mbox_get(const char *);
74 void omap_mbox_put(struct omap_mbox *);
76 int omap_mbox_register(struct device *parent, struct omap_mbox *);
77 int omap_mbox_unregister(struct omap_mbox *);
79 static inline void omap_mbox_save_ctx(struct omap_mbox *mbox)
81 if (!mbox->ops->save_ctx) {
82 dev_err(mbox->dev, "%s:\tno save\n", __func__);
86 mbox->ops->save_ctx(mbox);
89 static inline void omap_mbox_restore_ctx(struct omap_mbox *mbox)
91 if (!mbox->ops->restore_ctx) {
92 dev_err(mbox->dev, "%s:\tno restore\n", __func__);
96 mbox->ops->restore_ctx(mbox);
99 static inline void omap_mbox_enable_irq(struct omap_mbox *mbox,
102 mbox->ops->enable_irq(mbox, irq);
105 static inline void omap_mbox_disable_irq(struct omap_mbox *mbox,
108 mbox->ops->disable_irq(mbox, irq);
111 #endif /* MAILBOX_H */