diff options
| author | Hiroshi DOYU <Hiroshi.DOYU@nokia.com> | 2006-12-07 23:43:59 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-05-09 09:37:10 (GMT) |
| commit | 340a614ac6766df18cba87ff7e66182193c2bd6d (patch) | |
| tree | d1ad622625ba6933904567501a7387fc636c0a68 /include/asm-arm/arch-omap/mailbox.h | |
| parent | c40fae9525e6c29c87a4f4361ff0a8d67a36e448 (diff) | |
| download | linux-fsl-qoriq-340a614ac6766df18cba87ff7e66182193c2bd6d.tar.xz | |
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 0000000..4bf0909 --- /dev/null +++ b/include/asm-arm/arch-omap/mailbox.h @@ -0,0 +1,73 @@ +/* mailbox.h */ + +#ifndef MAILBOX_H +#define MAILBOX_H + +#include <linux/wait.h> +#include <linux/workqueue.h> +#include <linux/blkdev.h> + +typedef u32 mbox_msg_t; +typedef void (mbox_receiver_t)(mbox_msg_t msg); +struct omap_mbox; + +typedef int __bitwise omap_mbox_irq_t; +#define IRQ_TX ((__force omap_mbox_irq_t) 1) +#define IRQ_RX ((__force omap_mbox_irq_t) 2) + +typedef int __bitwise omap_mbox_type_t; +#define OMAP_MBOX_TYPE1 ((__force omap_mbox_type_t) 1) +#define OMAP_MBOX_TYPE2 ((__force omap_mbox_type_t) 2) + +struct omap_mbox_ops { + omap_mbox_type_t type; + int (*startup)(struct omap_mbox *mbox); + void (*shutdown)(struct omap_mbox *mbox); + /* fifo */ + mbox_msg_t (*fifo_read)(struct omap_mbox *mbox); + void (*fifo_write)(struct omap_mbox *mbox, mbox_msg_t msg); + int (*fifo_empty)(struct omap_mbox *mbox); + int (*fifo_full)(struct omap_mbox *mbox); + /* irq */ + void (*enable_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); + void (*disable_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); + void (*ack_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); + int (*is_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq); +}; + +struct omap_mbox_queue { + spinlock_t lock; + request_queue_t *queue; + struct work_struct work; + int (*callback)(void *); + struct omap_mbox *mbox; +}; + +struct omap_mbox { + char *name; + unsigned int irq; + + struct omap_mbox_queue *txq, *rxq; + + struct omap_mbox_ops *ops; + + mbox_msg_t seq_snd, seq_rcv; + + struct device dev; + + struct omap_mbox *next; + void *priv; + + void (*err_notify)(void); +}; + +int omap_mbox_msg_send(struct omap_mbox *, mbox_msg_t msg, void *); +void omap_mbox_init_seq(struct omap_mbox *); + +struct omap_mbox *omap_mbox_get(const char *); +void omap_mbox_put(struct omap_mbox *); + +int omap_mbox_register(struct omap_mbox *); +int omap_mbox_unregister(struct omap_mbox *); + +#endif /* MAILBOX_H */ |