diff options
author | Hiroshi DOYU <Hiroshi.DOYU@nokia.com> | 2006-12-07 18:43:59 -0500 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-05-09 05:37:10 -0400 |
commit | 340a614ac6766df18cba87ff7e66182193c2bd6d (patch) | |
tree | d1ad622625ba6933904567501a7387fc636c0a68 /include/asm-arm/arch-omap/mailbox.h | |
parent | c40fae9525e6c29c87a4f4361ff0a8d67a36e448 (diff) |
ARM: OMAP: Add mailbox support for IVA
This patch adds a generic mailbox interface for for DSP and IVA
(Image Video Accelerator). This patch itself doesn't contain
any IVA driver.
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/arch-omap/mailbox.h')
-rw-r--r-- | include/asm-arm/arch-omap/mailbox.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/include/asm-arm/arch-omap/mailbox.h b/include/asm-arm/arch-omap/mailbox.h new file mode 100644 index 000000000000..4bf0909461f2 --- /dev/null +++ b/include/asm-arm/arch-omap/mailbox.h | |||
@@ -0,0 +1,73 @@ | |||
1 | /* mailbox.h */ | ||
2 | |||
3 | #ifndef MAILBOX_H | ||
4 | #define MAILBOX_H | ||
5 | |||
6 | #include <linux/wait.h> | ||
7 | #include <linux/workqueue.h> | ||
8 | #include <linux/blkdev.h> | ||
9 | |||
10 | typedef u32 mbox_msg_t; | ||
11 | typedef void (mbox_receiver_t)(mbox_msg_t msg); | ||
12 | struct omap_mbox; | ||
13 | |||
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) | ||
17 | |||
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) | ||
21 | |||
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); | ||
26 | /* fifo */ | ||
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); | ||
31 | /* irq */ | ||
32 | void (*enable_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); | ||
33 | void (*disable_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); | ||
34 | void (*ack_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); | ||
35 | int (*is_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); | ||
36 | }; | ||
37 | |||
38 | struct omap_mbox_queue { | ||
39 | spinlock_t lock; | ||
40 | request_queue_t *queue; | ||
41 | struct work_struct work; | ||
42 | int (*callback)(void *); | ||
43 | struct omap_mbox *mbox; | ||
44 | }; | ||
45 | |||
46 | struct omap_mbox { | ||
47 | char *name; | ||
48 | unsigned int irq; | ||
49 | |||
50 | struct omap_mbox_queue *txq, *rxq; | ||
51 | |||
52 | struct omap_mbox_ops *ops; | ||
53 | |||
54 | mbox_msg_t seq_snd, seq_rcv; | ||
55 | |||
56 | struct device dev; | ||
57 | |||
58 | struct omap_mbox *next; | ||
59 | void *priv; | ||
60 | |||
61 | void (*err_notify)(void); | ||
62 | }; | ||
63 | |||
64 | int omap_mbox_msg_send(struct omap_mbox *, mbox_msg_t msg, void *); | ||
65 | void omap_mbox_init_seq(struct omap_mbox *); | ||
66 | |||
67 | struct omap_mbox *omap_mbox_get(const char *); | ||
68 | void omap_mbox_put(struct omap_mbox *); | ||
69 | |||
70 | int omap_mbox_register(struct omap_mbox *); | ||
71 | int omap_mbox_unregister(struct omap_mbox *); | ||
72 | |||
73 | #endif /* MAILBOX_H */ | ||