This framework is no longer needed, and the users should move over to
the new common framework. Mark the existing implementations as broken,
and deprecate the api, as a stop-gap.
Signed-off-by: Courtney Cavin <courtney.cavin@xxxxxxxxxxxxxx>
---
drivers/mailbox/Kconfig | 19 +-
drivers/mailbox/Makefile | 1 -
drivers/mailbox/omap-mailbox.c | 469 -----------------------------------------
drivers/mailbox/omap-mbox.h | 67 ------
include/linux/omap-mailbox.h | 45 +++-
5 files changed, 40 insertions(+), 561 deletions(-)
delete mode 100644 drivers/mailbox/omap-mailbox.c
delete mode 100644 drivers/mailbox/omap-mbox.h
diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig
index c8b5c13..6befc6e 100644
--- a/drivers/mailbox/Kconfig
+++ b/drivers/mailbox/Kconfig
@@ -16,17 +16,10 @@ config PL320_MBOX
Management Engine, primarily for cpufreq. Say Y here if you want
to use the PL320 IPCM support.
-config OMAP_MBOX
- tristate
- help
- This option is selected by any OMAP architecture specific mailbox
- driver such as CONFIG_OMAP1_MBOX or CONFIG_OMAP2PLUS_MBOX. This
- enables the common OMAP mailbox framework code.
-
config OMAP1_MBOX
tristate "OMAP1 Mailbox framework support"
depends on ARCH_OMAP1
- select OMAP_MBOX
+ depends on BROKEN
help
Mailbox implementation for OMAP chips with hardware for
interprocessor communication involving DSP in OMAP1. Say Y here
@@ -35,19 +28,11 @@ config OMAP1_MBOX
config OMAP2PLUS_MBOX
tristate "OMAP2+ Mailbox framework support"
depends on ARCH_OMAP2PLUS
- select OMAP_MBOX
+ depends on BROKEN
help
Mailbox implementation for OMAP family chips with hardware for
interprocessor communication involving DSP, IVA1.0 and IVA2 in
OMAP2/3; or IPU, IVA HD and DSP in OMAP4/5. Say Y here if you
want to use OMAP2+ Mailbox framework support.
-config OMAP_MBOX_KFIFO_SIZE
- int "Mailbox kfifo default buffer size (bytes)"
- depends on OMAP2PLUS_MBOX || OMAP1_MBOX
- default 256
- help
- Specify the default size of mailbox's kfifo buffers (bytes).
- This can also be changed at runtime (via the mbox_kfifo_size
- module parameter).
endif
diff --git a/drivers/mailbox/Makefile b/drivers/mailbox/Makefile
index 53712ed..c8e51a0 100644
--- a/drivers/mailbox/Makefile
+++ b/drivers/mailbox/Makefile
@@ -1,7 +1,6 @@
obj-$(CONFIG_MAILBOX) += core.o
obj-$(CONFIG_PL320_MBOX) += pl320-ipc.o
-obj-$(CONFIG_OMAP_MBOX) += omap-mailbox.o
obj-$(CONFIG_OMAP1_MBOX) += mailbox_omap1.o
mailbox_omap1-objs := mailbox-omap1.o
obj-$(CONFIG_OMAP2PLUS_MBOX) += mailbox_omap2.o
diff --git a/drivers/mailbox/omap-mailbox.c b/drivers/mailbox/omap-mailbox.c
deleted file mode 100644
index d79a646..0000000
--- a/drivers/mailbox/omap-mailbox.c
+++ /dev/null
@@ -1,469 +0,0 @@
-/*
- * OMAP mailbox driver
- *
- * Copyright (C) 2006-2009 Nokia Corporation. All rights reserved.
- *
- * Contact: Hiroshi DOYU <Hiroshi.DOYU@xxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
- */
-
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/mutex.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/kfifo.h>
-#include <linux/err.h>
-#include <linux/notifier.h>
-#include <linux/module.h>
-
-#include "omap-mbox.h"
-
-static struct omap_mbox **mboxes;
-
-static int mbox_configured;
-static DEFINE_MUTEX(mbox_configured_lock);
-
-static unsigned int mbox_kfifo_size = CONFIG_OMAP_MBOX_KFIFO_SIZE;
-module_param(mbox_kfifo_size, uint, S_IRUGO);
-MODULE_PARM_DESC(mbox_kfifo_size, "Size of omap's mailbox kfifo (bytes)");
-
-/* 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 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);
-}
-
-/*
- * message sender
- */
-static int __mbox_poll_for_space(struct omap_mbox *mbox)
-{
- int ret = 0, i = 1000;
-
- while (mbox_fifo_full(mbox)) {
- if (mbox->ops->type == OMAP_MBOX_TYPE2)
- return -1;
- if (--i == 0)
- return -1;
- udelay(1);
- }
- return ret;
-}
-
-int omap_mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg)
-{
- struct omap_mbox_queue *mq = mbox->txq;
- int ret = 0, len;
-
- spin_lock_bh(&mq->lock);
-
- if (kfifo_avail(&mq->fifo) < sizeof(msg)) {
- ret = -ENOMEM;
- goto out;
- }
-
- if (kfifo_is_empty(&mq->fifo) && !__mbox_poll_for_space(mbox)) {
- mbox_fifo_write(mbox, msg);
- goto out;
- }
-
- len = kfifo_in(&mq->fifo, (unsigned char *)&msg, sizeof(msg));
- WARN_ON(len != sizeof(msg));
-
- tasklet_schedule(&mbox->txq->tasklet);
-
-out:
- spin_unlock_bh(&mq->lock);
- return ret;
-}
-EXPORT_SYMBOL(omap_mbox_msg_send);
-
-void omap_mbox_save_ctx(struct omap_mbox *mbox)
-{
- if (!mbox->ops->save_ctx) {
- dev_err(mbox->dev, "%s:\tno save\n", __func__);
- return;
- }
-
- mbox->ops->save_ctx(mbox);
-}
-EXPORT_SYMBOL(omap_mbox_save_ctx);
-
-void omap_mbox_restore_ctx(struct omap_mbox *mbox)
-{
- if (!mbox->ops->restore_ctx) {
- dev_err(mbox->dev, "%s:\tno restore\n", __func__);
- return;
- }
-
- mbox->ops->restore_ctx(mbox);
-}
-EXPORT_SYMBOL(omap_mbox_restore_ctx);
-
-void omap_mbox_enable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
-{
- mbox->ops->enable_irq(mbox, irq);
-}
-EXPORT_SYMBOL(omap_mbox_enable_irq);
-
-void omap_mbox_disable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
-{
- mbox->ops->disable_irq(mbox, irq);
-}
-EXPORT_SYMBOL(omap_mbox_disable_irq);
-
-static void mbox_tx_tasklet(unsigned long tx_data)
-{
- struct omap_mbox *mbox = (struct omap_mbox *)tx_data;
- struct omap_mbox_queue *mq = mbox->txq;
- mbox_msg_t msg;
- int ret;
-
- while (kfifo_len(&mq->fifo)) {
- if (__mbox_poll_for_space(mbox)) {
- omap_mbox_enable_irq(mbox, IRQ_TX);
- break;
- }
-
- ret = kfifo_out(&mq->fifo, (unsigned char *)&msg,
- sizeof(msg));
- WARN_ON(ret != sizeof(msg));
-
- mbox_fifo_write(mbox, msg);
- }
-}
-
-/*
- * Message receiver(workqueue)
- */
-static void mbox_rx_work(struct work_struct *work)
-{
- struct omap_mbox_queue *mq =
- container_of(work, struct omap_mbox_queue, work);
- mbox_msg_t msg;
- int len;
-
- while (kfifo_len(&mq->fifo) >= sizeof(msg)) {
- len = kfifo_out(&mq->fifo, (unsigned char *)&msg, sizeof(msg));
- WARN_ON(len != sizeof(msg));
-
- blocking_notifier_call_chain(&mq->mbox->notifier, len,
- (void *)msg);
- spin_lock_irq(&mq->lock);
- if (mq->full) {
- mq->full = false;
- omap_mbox_enable_irq(mq->mbox, IRQ_RX);
- }
- spin_unlock_irq(&mq->lock);
- }
-}
-
-/*
- * Mailbox interrupt handler
- */
-static void __mbox_tx_interrupt(struct omap_mbox *mbox)
-{
- omap_mbox_disable_irq(mbox, IRQ_TX);
- ack_mbox_irq(mbox, IRQ_TX);
- tasklet_schedule(&mbox->txq->tasklet);
-}
-
-static void __mbox_rx_interrupt(struct omap_mbox *mbox)
-{
- struct omap_mbox_queue *mq = mbox->rxq;
- mbox_msg_t msg;
- int len;
-
- while (!mbox_fifo_empty(mbox)) {
- if (unlikely(kfifo_avail(&mq->fifo) < sizeof(msg))) {
- omap_mbox_disable_irq(mbox, IRQ_RX);
- mq->full = true;
- goto nomem;
- }
-
- msg = mbox_fifo_read(mbox);
-
- len = kfifo_in(&mq->fifo, (unsigned char *)&msg, sizeof(msg));
- WARN_ON(len != sizeof(msg));
-
- if (mbox->ops->type == OMAP_MBOX_TYPE1)
- break;
- }
-
- /* no more messages in the fifo. clear IRQ source. */
- ack_mbox_irq(mbox, IRQ_RX);
-nomem:
- schedule_work(&mbox->rxq->work);
-}
-
-static irqreturn_t mbox_interrupt(int irq, void *p)
-{
- struct omap_mbox *mbox = p;
-
- if (is_mbox_irq(mbox, IRQ_TX))
- __mbox_tx_interrupt(mbox);
-
- if (is_mbox_irq(mbox, IRQ_RX))
- __mbox_rx_interrupt(mbox);
-
- return IRQ_HANDLED;
-}
-
-static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox,
- void (*work) (struct work_struct *),
- void (*tasklet)(unsigned long))
-{
- struct omap_mbox_queue *mq;
-
- mq = kzalloc(sizeof(struct omap_mbox_queue), GFP_KERNEL);
- if (!mq)
- return NULL;
-
- spin_lock_init(&mq->lock);
-
- if (kfifo_alloc(&mq->fifo, mbox_kfifo_size, GFP_KERNEL))
- goto error;
-
- if (work)
- INIT_WORK(&mq->work, work);
-
- if (tasklet)
- tasklet_init(&mq->tasklet, tasklet, (unsigned long)mbox);
- return mq;
-error:
- kfree(mq);
- return NULL;
-}
-
-static void mbox_queue_free(struct omap_mbox_queue *q)
-{
- kfifo_free(&q->fifo);
- kfree(q);
-}
-
-static int omap_mbox_startup(struct omap_mbox *mbox)
-{
- int ret = 0;
- struct omap_mbox_queue *mq;
-
- mutex_lock(&mbox_configured_lock);
- if (!mbox_configured++) {
- if (likely(mbox->ops->startup)) {
- ret = mbox->ops->startup(mbox);
- if (unlikely(ret))
- goto fail_startup;
- } else
- goto fail_startup;
- }
-
- if (!mbox->use_count++) {
- mq = mbox_queue_alloc(mbox, NULL, mbox_tx_tasklet);
- if (!mq) {
- ret = -ENOMEM;
- goto fail_alloc_txq;
- }
- mbox->txq = mq;
-
- mq = mbox_queue_alloc(mbox, mbox_rx_work, NULL);
- if (!mq) {
- ret = -ENOMEM;
- goto fail_alloc_rxq;
- }
- mbox->rxq = mq;
- mq->mbox = mbox;
- ret = request_irq(mbox->irq, mbox_interrupt, IRQF_SHARED,
- mbox->name, mbox);
- if (unlikely(ret)) {
- pr_err("failed to register mailbox interrupt:%d\n",
- ret);
- goto fail_request_irq;
- }
-
- omap_mbox_enable_irq(mbox, IRQ_RX);
- }
- mutex_unlock(&mbox_configured_lock);
- return 0;
-
-fail_request_irq:
- mbox_queue_free(mbox->rxq);
-fail_alloc_rxq:
- mbox_queue_free(mbox->txq);
-fail_alloc_txq:
- if (mbox->ops->shutdown)
- mbox->ops->shutdown(mbox);
- mbox->use_count--;
-fail_startup:
- mbox_configured--;
- mutex_unlock(&mbox_configured_lock);
- return ret;
-}
-
-static void omap_mbox_fini(struct omap_mbox *mbox)
-{
- mutex_lock(&mbox_configured_lock);
-
- if (!--mbox->use_count) {
- omap_mbox_disable_irq(mbox, IRQ_RX);
- free_irq(mbox->irq, mbox);
- tasklet_kill(&mbox->txq->tasklet);
- flush_work(&mbox->rxq->work);
- mbox_queue_free(mbox->txq);
- mbox_queue_free(mbox->rxq);
- }
-
- if (likely(mbox->ops->shutdown)) {
- if (!--mbox_configured)
- mbox->ops->shutdown(mbox);
- }
-
- mutex_unlock(&mbox_configured_lock);
-}
-
-struct omap_mbox *omap_mbox_get(const char *name, struct notifier_block *nb)
-{
- struct omap_mbox *_mbox, *mbox = NULL;
- int i, ret;
-
- if (!mboxes)
- return ERR_PTR(-EINVAL);
-
- for (i = 0; (_mbox = mboxes[i]); i++) {
- if (!strcmp(_mbox->name, name)) {
- mbox = _mbox;
- break;
- }
- }
-
- if (!mbox)
- return ERR_PTR(-ENOENT);
-
- if (nb)
- blocking_notifier_chain_register(&mbox->notifier, nb);
-
- ret = omap_mbox_startup(mbox);
- if (ret) {
- blocking_notifier_chain_unregister(&mbox->notifier, nb);
- return ERR_PTR(-ENODEV);
- }
-
- return mbox;
-}
-EXPORT_SYMBOL(omap_mbox_get);
-
-void omap_mbox_put(struct omap_mbox *mbox, struct notifier_block *nb)
-{
- blocking_notifier_chain_unregister(&mbox->notifier, nb);
- omap_mbox_fini(mbox);
-}
-EXPORT_SYMBOL(omap_mbox_put);
-
-static struct class omap_mbox_class = { .name = "mbox", };
-
-int omap_mbox_register(struct device *parent, struct omap_mbox **list)
-{
- int ret;
- int i;
-
- mboxes = list;
- if (!mboxes)
- return -EINVAL;
-
- for (i = 0; mboxes[i]; i++) {
- struct omap_mbox *mbox = mboxes[i];
- mbox->dev = device_create(&omap_mbox_class,
- parent, 0, mbox, "%s", mbox->name);
- if (IS_ERR(mbox->dev)) {
- ret = PTR_ERR(mbox->dev);
- goto err_out;
- }
-
- BLOCKING_INIT_NOTIFIER_HEAD(&mbox->notifier);
- }
- return 0;
-
-err_out:
- while (i--)
- device_unregister(mboxes[i]->dev);
- return ret;
-}
-EXPORT_SYMBOL(omap_mbox_register);
-
-int omap_mbox_unregister(void)
-{
- int i;
-
- if (!mboxes)
- return -EINVAL;
-
- for (i = 0; mboxes[i]; i++)
- device_unregister(mboxes[i]->dev);
- mboxes = NULL;
- return 0;
-}
-EXPORT_SYMBOL(omap_mbox_unregister);
-
-static int __init omap_mbox_init(void)
-{
- int err;
-
- err = class_register(&omap_mbox_class);
- if (err)
- return err;
-
- /* kfifo size sanity check: alignment and minimal size */
- mbox_kfifo_size = ALIGN(mbox_kfifo_size, sizeof(mbox_msg_t));
- mbox_kfifo_size = max_t(unsigned int, mbox_kfifo_size,
- sizeof(mbox_msg_t));
-
- return 0;
-}
-subsys_initcall(omap_mbox_init);
-
-static void __exit omap_mbox_exit(void)
-{
- class_unregister(&omap_mbox_class);
-}
-module_exit(omap_mbox_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("omap mailbox: interrupt driven messaging");
-MODULE_AUTHOR("Toshihiro Kobayashi");
-MODULE_AUTHOR("Hiroshi DOYU");
diff --git a/drivers/mailbox/omap-mbox.h b/drivers/mailbox/omap-mbox.h
deleted file mode 100644
index 6cd38fc..0000000
--- a/drivers/mailbox/omap-mbox.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * omap-mbox.h: OMAP mailbox internal definitions
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef OMAP_MBOX_H
-#define OMAP_MBOX_H
-
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/kfifo.h>
-#include <linux/spinlock.h>
-#include <linux/workqueue.h>
-#include <linux/omap-mailbox.h>
-
-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);
- /* ctx */
- void (*save_ctx)(struct omap_mbox *mbox);
- void (*restore_ctx)(struct omap_mbox *mbox);
-};
-
-struct omap_mbox_queue {
- spinlock_t lock;
- struct kfifo fifo;
- struct work_struct work;
- struct tasklet_struct tasklet;
- struct omap_mbox *mbox;
- bool full;
-};
-
-struct omap_mbox {
- const char *name;
- unsigned int irq;
- struct omap_mbox_queue *txq, *rxq;
- struct omap_mbox_ops *ops;
- struct device *dev;
- void *priv;
- int use_count;
- struct blocking_notifier_head notifier;
-};
-
-int omap_mbox_register(struct device *parent, struct omap_mbox **);
-int omap_mbox_unregister(void);
-
-#endif /* OMAP_MBOX_H */
diff --git a/include/linux/omap-mailbox.h b/include/linux/omap-mailbox.h
index f8322d9..89fb606 100644
--- a/include/linux/omap-mailbox.h
+++ b/include/linux/omap-mailbox.h
@@ -9,6 +9,9 @@
#ifndef OMAP_MAILBOX_H
#define OMAP_MAILBOX_H
+#include <linux/compiler.h>
+#include <linux/mbox.h>
+
typedef u32 mbox_msg_t;
struct omap_mbox;
@@ -16,14 +19,42 @@ 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)
-int omap_mbox_msg_send(struct omap_mbox *, mbox_msg_t msg);
+static inline int __deprecated omap_mbox_msg_send(struct omap_mbox *mbox,
+ mbox_msg_t msg)
+{
+ struct mbox *m = (struct mbox *)mbox;
+ return mbox_put_message(m, &msg, sizeof(msg));
+}
+
+static inline struct omap_mbox *__deprecated omap_mbox_get(const char *name,
+ struct notifier_block *nb);
+{
+ return (struct omap_mbox *)mbox_request(NULL, name, nb);
+}
+
+static inline void __deprecated omap_mbox_put(struct omap_mbox *mbox,
+ struct notifier_block *nb)
+{
+ struct mbox *m = (struct mbox *)mbox;
+ mbox_release(m, nb);
+}
+
+static inline void __deprecated omap_mbox_save_ctx(struct omap_mbox *mbox)
+{
+}
+
+static inline void __deprecated omap_mbox_restore_ctx(struct omap_mbox *mbox)
+{
+}
-struct omap_mbox *omap_mbox_get(const char *, struct notifier_block *nb);
-void omap_mbox_put(struct omap_mbox *mbox, struct notifier_block *nb);
+static inline void __deprecated omap_mbox_enable_irq(struct omap_mbox *mbox,
+ omap_mbox_irq_t irq)
+{
+}
-void omap_mbox_save_ctx(struct omap_mbox *mbox);
-void omap_mbox_restore_ctx(struct omap_mbox *mbox);
-void omap_mbox_enable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq);
-void omap_mbox_disable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq);
+static inline void __deprecated omap_mbox_disable_irq(struct omap_mbox *mbox,
+ omap_mbox_irq_t irq)
+{
+}
#endif /* OMAP_MAILBOX_H */
--
1.8.1.5
--
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