| Suman Anna | c869c75 | 2013-03-12 17:55:29 -0500 | [diff] [blame] | 1 | /* |
| 2 | * omap-mbox.h: OMAP mailbox internal definitions |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | */ |
| 8 | |
| 9 | #ifndef OMAP_MBOX_H |
| 10 | #define OMAP_MBOX_H |
| 11 | |
| 12 | #include <linux/device.h> |
| 13 | #include <linux/interrupt.h> |
| 14 | #include <linux/kfifo.h> |
| 15 | #include <linux/spinlock.h> |
| 16 | #include <linux/workqueue.h> |
| 17 | #include <linux/omap-mailbox.h> |
| 18 | |
| 19 | typedef int __bitwise omap_mbox_type_t; |
| 20 | #define OMAP_MBOX_TYPE1 ((__force omap_mbox_type_t) 1) |
| 21 | #define OMAP_MBOX_TYPE2 ((__force omap_mbox_type_t) 2) |
| 22 | |
| 23 | struct omap_mbox_ops { |
| 24 | omap_mbox_type_t type; |
| 25 | int (*startup)(struct omap_mbox *mbox); |
| 26 | void (*shutdown)(struct omap_mbox *mbox); |
| 27 | /* fifo */ |
| 28 | mbox_msg_t (*fifo_read)(struct omap_mbox *mbox); |
| 29 | void (*fifo_write)(struct omap_mbox *mbox, mbox_msg_t msg); |
| 30 | int (*fifo_empty)(struct omap_mbox *mbox); |
| 31 | int (*fifo_full)(struct omap_mbox *mbox); |
| 32 | /* irq */ |
| 33 | void (*enable_irq)(struct omap_mbox *mbox, |
| 34 | omap_mbox_irq_t irq); |
| 35 | void (*disable_irq)(struct omap_mbox *mbox, |
| 36 | omap_mbox_irq_t irq); |
| 37 | void (*ack_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); |
| 38 | int (*is_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); |
| 39 | /* ctx */ |
| 40 | void (*save_ctx)(struct omap_mbox *mbox); |
| 41 | void (*restore_ctx)(struct omap_mbox *mbox); |
| 42 | }; |
| 43 | |
| 44 | struct omap_mbox_queue { |
| 45 | spinlock_t lock; |
| 46 | struct kfifo fifo; |
| 47 | struct work_struct work; |
| 48 | struct tasklet_struct tasklet; |
| 49 | struct omap_mbox *mbox; |
| 50 | bool full; |
| 51 | }; |
| 52 | |
| 53 | struct omap_mbox { |
| 54 | const char *name; |
| 55 | unsigned int irq; |
| 56 | struct omap_mbox_queue *txq, *rxq; |
| 57 | struct omap_mbox_ops *ops; |
| 58 | struct device *dev; |
| 59 | void *priv; |
| 60 | int use_count; |
| 61 | struct blocking_notifier_head notifier; |
| 62 | }; |
| 63 | |
| 64 | int omap_mbox_register(struct device *parent, struct omap_mbox **); |
| 65 | int omap_mbox_unregister(void); |
| 66 | |
| 67 | #endif /* OMAP_MBOX_H */ |