b8a7cf8e2b
The OMAP mailbox platform driver code has been cleaned up to remove the dependencies with soc.h in preparation for moving the mailbox code to drivers folder. The code relied on cpu_is_xxx/soc_is_xxx macros previously to pick the the right set of mailbox devices and register with the mailbox driver. This data is now represented in a concise format and moved to the respective omap_hwmod data files and published to the driver through the platform data. Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Suman Anna <s-anna@ti.com>
106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/* mailbox.h */
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#ifndef MAILBOX_H
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#define MAILBOX_H
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/interrupt.h>
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#include <linux/device.h>
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#include <linux/kfifo.h>
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typedef u32 mbox_msg_t;
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struct omap_mbox;
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typedef int __bitwise omap_mbox_irq_t;
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#define IRQ_TX ((__force omap_mbox_irq_t) 1)
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#define IRQ_RX ((__force omap_mbox_irq_t) 2)
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typedef int __bitwise omap_mbox_type_t;
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#define OMAP_MBOX_TYPE1 ((__force omap_mbox_type_t) 1)
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#define OMAP_MBOX_TYPE2 ((__force omap_mbox_type_t) 2)
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struct omap_mbox_ops {
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omap_mbox_type_t type;
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int (*startup)(struct omap_mbox *mbox);
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void (*shutdown)(struct omap_mbox *mbox);
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/* fifo */
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mbox_msg_t (*fifo_read)(struct omap_mbox *mbox);
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void (*fifo_write)(struct omap_mbox *mbox, mbox_msg_t msg);
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int (*fifo_empty)(struct omap_mbox *mbox);
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int (*fifo_full)(struct omap_mbox *mbox);
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/* irq */
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void (*enable_irq)(struct omap_mbox *mbox,
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omap_mbox_irq_t irq);
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void (*disable_irq)(struct omap_mbox *mbox,
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omap_mbox_irq_t irq);
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void (*ack_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq);
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int (*is_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq);
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/* ctx */
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void (*save_ctx)(struct omap_mbox *mbox);
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void (*restore_ctx)(struct omap_mbox *mbox);
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};
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struct omap_mbox_queue {
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spinlock_t lock;
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struct kfifo fifo;
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struct work_struct work;
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struct tasklet_struct tasklet;
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struct omap_mbox *mbox;
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bool full;
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};
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struct omap_mbox {
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const char *name;
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unsigned int irq;
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struct omap_mbox_queue *txq, *rxq;
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struct omap_mbox_ops *ops;
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struct device *dev;
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void *priv;
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int use_count;
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struct blocking_notifier_head notifier;
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};
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int omap_mbox_msg_send(struct omap_mbox *, mbox_msg_t msg);
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void omap_mbox_init_seq(struct omap_mbox *);
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struct omap_mbox *omap_mbox_get(const char *, struct notifier_block *nb);
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void omap_mbox_put(struct omap_mbox *mbox, struct notifier_block *nb);
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int omap_mbox_register(struct device *parent, struct omap_mbox **);
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int omap_mbox_unregister(void);
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static inline void omap_mbox_save_ctx(struct omap_mbox *mbox)
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{
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if (!mbox->ops->save_ctx) {
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dev_err(mbox->dev, "%s:\tno save\n", __func__);
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return;
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}
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mbox->ops->save_ctx(mbox);
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}
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static inline void omap_mbox_restore_ctx(struct omap_mbox *mbox)
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{
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if (!mbox->ops->restore_ctx) {
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dev_err(mbox->dev, "%s:\tno restore\n", __func__);
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return;
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}
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mbox->ops->restore_ctx(mbox);
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}
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static inline void omap_mbox_enable_irq(struct omap_mbox *mbox,
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omap_mbox_irq_t irq)
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{
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mbox->ops->enable_irq(mbox, irq);
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}
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static inline void omap_mbox_disable_irq(struct omap_mbox *mbox,
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omap_mbox_irq_t irq)
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{
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mbox->ops->disable_irq(mbox, irq);
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}
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#endif /* MAILBOX_H */
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