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yaml
---
r: 137461
b: refs/heads/master
c: 9ae0ee0
h: refs/heads/master
i:
  137459: 9a2c9e9
v: v3
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Hiroshi DOYU authored and Tony Lindgren committed Mar 24, 2009
1 parent 8b1bcde commit 57f6beb
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Showing 3 changed files with 86 additions and 102 deletions.
2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: c75ee7520b4ad48a6948f51ca43b2e46ebd3696a
refs/heads/master: 9ae0ee0076d51d9017e89004643825a67d852910
86 changes: 85 additions & 1 deletion trunk/arch/arm/plat-omap/mailbox.c
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Expand Up @@ -31,11 +31,95 @@
#include <linux/delay.h>
#include <linux/io.h>
#include <mach/mailbox.h>
#include "mailbox.h"

static struct omap_mbox *mboxes;
static DEFINE_RWLOCK(mboxes_lock);

/*
* Mailbox sequence bit API
*/
#if defined(CONFIG_ARCH_OMAP1)
# define MBOX_USE_SEQ_BIT
#elif defined(CONFIG_ARCH_OMAP2)
# define MBOX_USE_SEQ_BIT
#endif

#ifdef MBOX_USE_SEQ_BIT
/* seq_rcv should be initialized with any value other than
* 0 and 1 << 31, to allow either value for the first
* message. */
static inline void mbox_seq_init(struct omap_mbox *mbox)
{
/* any value other than 0 and 1 << 31 */
mbox->seq_rcv = 0xffffffff;
}

static inline void mbox_seq_toggle(struct omap_mbox *mbox, mbox_msg_t * msg)
{
/* add seq_snd to msg */
*msg = (*msg & 0x7fffffff) | mbox->seq_snd;
/* flip seq_snd */
mbox->seq_snd ^= 1 << 31;
}

static inline int mbox_seq_test(struct omap_mbox *mbox, mbox_msg_t msg)
{
mbox_msg_t seq = msg & (1 << 31);
if (seq == mbox->seq_rcv)
return -1;
mbox->seq_rcv = seq;
return 0;
}
#else
static inline void mbox_seq_init(struct omap_mbox *mbox)
{
}
static inline void mbox_seq_toggle(struct omap_mbox *mbox, mbox_msg_t * msg)
{
}
static inline int mbox_seq_test(struct omap_mbox *mbox, mbox_msg_t msg)
{
return 0;
}
#endif

/* Mailbox FIFO handle functions */
static inline mbox_msg_t mbox_fifo_read(struct omap_mbox *mbox)
{
return mbox->ops->fifo_read(mbox);
}
static inline void mbox_fifo_write(struct omap_mbox *mbox, mbox_msg_t msg)
{
mbox->ops->fifo_write(mbox, msg);
}
static inline int mbox_fifo_empty(struct omap_mbox *mbox)
{
return mbox->ops->fifo_empty(mbox);
}
static inline int mbox_fifo_full(struct omap_mbox *mbox)
{
return mbox->ops->fifo_full(mbox);
}

/* Mailbox IRQ handle functions */
static inline void enable_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
{
mbox->ops->enable_irq(mbox, irq);
}
static inline void disable_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
{
mbox->ops->disable_irq(mbox, irq);
}
static inline void ack_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
{
if (mbox->ops->ack_irq)
mbox->ops->ack_irq(mbox, irq);
}
static inline int is_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
{
return mbox->ops->is_irq(mbox, irq);
}

/* Mailbox Sequence Bit function */
void omap_mbox_init_seq(struct omap_mbox *mbox)
{
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100 changes: 0 additions & 100 deletions trunk/arch/arm/plat-omap/mailbox.h

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