};
static struct platform_device mbox_device = {
- .name = "mailbox",
+ .name = "omap1-mailbox",
.id = -1,
.num_resources = ARRAY_SIZE(mbox_resources),
.resource = mbox_resources,
/*
* Mailbox reservation modules for DSP
*
- * Copyright (C) 2006 Nokia Corporation
+ * Copyright (C) 2006-2008 Nokia Corporation
* Written by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
*
* This file is subject to the terms and conditions of the GNU General Public
#include <mach/mailbox.h>
#include <mach/irqs.h>
+#define DRV_NAME "omap1-mailbox"
+
#define MAILBOX_ARM2DSP1 0x00
#define MAILBOX_ARM2DSP1b 0x04
#define MAILBOX_DSP2ARM1 0x08
#define MAILBOX_DSP2ARM1_Flag 0x1c
#define MAILBOX_DSP2ARM2_Flag 0x20
-unsigned long mbox_base;
+static void __iomem *mbox_base;
struct omap_mbox1_fifo {
unsigned long cmd;
struct omap_mbox1_fifo rx_fifo;
};
-static inline int mbox_read_reg(unsigned int reg)
+static inline int mbox_read_reg(size_t ofs)
{
- return __raw_readw(mbox_base + reg);
+ return __raw_readw(mbox_base + ofs);
}
-static inline void mbox_write_reg(unsigned int val, unsigned int reg)
+static inline void mbox_write_reg(u32 val, size_t ofs)
{
- __raw_writew(val, mbox_base + reg);
+ __raw_writew(val, mbox_base + ofs);
}
/* msg */
};
EXPORT_SYMBOL(mbox_dsp_info);
-static int __init omap1_mbox_probe(struct platform_device *pdev)
+static int __devinit omap1_mbox_probe(struct platform_device *pdev)
{
struct resource *res;
int ret = 0;
}
mbox_dsp_info.irq = res->start;
- ret = omap_mbox_register(&mbox_dsp_info);
-
- return ret;
+ return omap_mbox_register(&pdev->dev, &mbox_dsp_info);
}
-static int omap1_mbox_remove(struct platform_device *pdev)
+static int __devexit omap1_mbox_remove(struct platform_device *pdev)
{
omap_mbox_unregister(&mbox_dsp_info);
static struct platform_driver omap1_mbox_driver = {
.probe = omap1_mbox_probe,
- .remove = omap1_mbox_remove,
+ .remove = __devexit_p(omap1_mbox_remove),
.driver = {
- .name = "mailbox",
+ .name = DRV_NAME,
},
};
module_init(omap1_mbox_init);
module_exit(omap1_mbox_exit);
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("omap mailbox: omap1 architecture specific functions");
+MODULE_AUTHOR("Hiroshi DOYU" <Hiroshi.DOYU@nokia.com>);
+MODULE_ALIAS("platform:"DRV_NAME);
}
#endif
-#if defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
-#define OMAP2_MBOX_BASE IO_ADDRESS(OMAP24XX_MAILBOX_BASE)
+#if defined(CONFIG_OMAP_MBOX_FWK) || defined(CONFIG_OMAP_MBOX_FWK_MODULE)
-static struct resource mbox_resources[] = {
+#define MBOX_REG_SIZE 0x120
+
+static struct resource omap2_mbox_resources[] = {
{
- .start = OMAP2_MBOX_BASE,
- .end = OMAP2_MBOX_BASE + 0x11f,
+ .start = OMAP24XX_MAILBOX_BASE,
+ .end = OMAP24XX_MAILBOX_BASE + MBOX_REG_SIZE - 1,
.flags = IORESOURCE_MEM,
},
{
},
};
+static struct resource omap3_mbox_resources[] = {
+ {
+ .start = OMAP34XX_MAILBOX_BASE,
+ .end = OMAP34XX_MAILBOX_BASE + MBOX_REG_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = INT_34XX_MAIL_U0_MPU,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
static struct platform_device mbox_device = {
- .name = "mailbox",
+ .name = "omap2-mailbox",
.id = -1,
- .num_resources = ARRAY_SIZE(mbox_resources),
- .resource = mbox_resources,
};
static inline void omap_init_mbox(void)
{
+ if (cpu_is_omap2420()) {
+ mbox_device.num_resources = ARRAY_SIZE(omap2_mbox_resources);
+ mbox_device.resource = omap2_mbox_resources;
+ } else if (cpu_is_omap3430()) {
+ mbox_device.num_resources = ARRAY_SIZE(omap3_mbox_resources);
+ mbox_device.resource = omap3_mbox_resources;
+ } else {
+ return;
+ }
platform_device_register(&mbox_device);
}
#else
static inline void omap_init_mbox(void) { }
-#endif
+#endif /* CONFIG_OMAP_MBOX_FWK */
#if defined(CONFIG_OMAP_STI)
/*
- * Mailbox reservation modules for OMAP2
+ * Mailbox reservation modules for OMAP2/3
*
- * Copyright (C) 2006 Nokia Corporation
+ * Copyright (C) 2006-2008 Nokia Corporation
* Written by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
- * and Paul Mundt <paul.mundt@nokia.com>
+ * and Paul Mundt
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
#include <mach/mailbox.h>
#include <mach/irqs.h>
-#define MAILBOX_REVISION 0x00
-#define MAILBOX_SYSCONFIG 0x10
-#define MAILBOX_SYSSTATUS 0x14
-#define MAILBOX_MESSAGE_0 0x40
-#define MAILBOX_MESSAGE_1 0x44
-#define MAILBOX_MESSAGE_2 0x48
-#define MAILBOX_MESSAGE_3 0x4c
-#define MAILBOX_MESSAGE_4 0x50
-#define MAILBOX_MESSAGE_5 0x54
-#define MAILBOX_FIFOSTATUS_0 0x80
-#define MAILBOX_FIFOSTATUS_1 0x84
-#define MAILBOX_FIFOSTATUS_2 0x88
-#define MAILBOX_FIFOSTATUS_3 0x8c
-#define MAILBOX_FIFOSTATUS_4 0x90
-#define MAILBOX_FIFOSTATUS_5 0x94
-#define MAILBOX_MSGSTATUS_0 0xc0
-#define MAILBOX_MSGSTATUS_1 0xc4
-#define MAILBOX_MSGSTATUS_2 0xc8
-#define MAILBOX_MSGSTATUS_3 0xcc
-#define MAILBOX_MSGSTATUS_4 0xd0
-#define MAILBOX_MSGSTATUS_5 0xd4
-#define MAILBOX_IRQSTATUS_0 0x100
-#define MAILBOX_IRQENABLE_0 0x104
-#define MAILBOX_IRQSTATUS_1 0x108
-#define MAILBOX_IRQENABLE_1 0x10c
-#define MAILBOX_IRQSTATUS_2 0x110
-#define MAILBOX_IRQENABLE_2 0x114
-#define MAILBOX_IRQSTATUS_3 0x118
-#define MAILBOX_IRQENABLE_3 0x11c
-
-static unsigned long mbox_base;
-
-#define MAILBOX_IRQ_NOTFULL(n) (1 << (2 * (n) + 1))
-#define MAILBOX_IRQ_NEWMSG(n) (1 << (2 * (n)))
+#define DRV_NAME "omap2-mailbox"
+
+#define MAILBOX_REVISION 0x000
+#define MAILBOX_SYSCONFIG 0x010
+#define MAILBOX_SYSSTATUS 0x014
+#define MAILBOX_MESSAGE(m) (0x040 + 4 * (m))
+#define MAILBOX_FIFOSTATUS(m) (0x080 + 4 * (m))
+#define MAILBOX_MSGSTATUS(m) (0x0c0 + 4 * (m))
+#define MAILBOX_IRQSTATUS(u) (0x100 + 8 * (u))
+#define MAILBOX_IRQENABLE(u) (0x108 + 8 * (u))
+
+#define MAILBOX_IRQ_NEWMSG(u) (1 << (2 * (u)))
+#define MAILBOX_IRQ_NOTFULL(u) (1 << (2 * (u) + 1))
+
+#define MBOX_REG_SIZE 0x120
+
+static void __iomem *mbox_base;
struct omap_mbox2_fifo {
unsigned long msg;
unsigned long irqstatus;
u32 newmsg_bit;
u32 notfull_bit;
+ char ctx[MBOX_REG_SIZE];
};
static struct clk *mbox_ick_handle;
static void omap2_mbox_enable_irq(struct omap_mbox *mbox,
omap_mbox_type_t irq);
-static inline unsigned int mbox_read_reg(unsigned int reg)
+static inline unsigned int mbox_read_reg(size_t ofs)
{
- return __raw_readl(mbox_base + reg);
+ return __raw_readl(mbox_base + ofs);
}
-static inline void mbox_write_reg(unsigned int val, unsigned int reg)
+static inline void mbox_write_reg(u32 val, size_t ofs)
{
- __raw_writel(val, mbox_base + reg);
+ __raw_writel(val, mbox_base + ofs);
}
/* Mailbox H/W preparations */
}
clk_enable(mbox_ick_handle);
+ l = mbox_read_reg(MAILBOX_REVISION);
+ pr_info("omap mailbox rev %d.%d\n", (l & 0xf0) >> 4, (l & 0x0f));
+
/* set smart-idle & autoidle */
l = mbox_read_reg(MAILBOX_SYSCONFIG);
l |= 0x00000011;
return (enable & status & bit);
}
+static void omap2_mbox_save_ctx(struct omap_mbox *mbox)
+{
+ int i;
+ struct omap_mbox2_priv *p = mbox->priv;
+
+ for (i = 0; i < MBOX_REG_SIZE; i += sizeof(u32)) {
+ u32 val;
+
+ val = mbox_read_reg(i);
+ *(u32 *)(p->ctx + i) = val;
+
+ dev_dbg(mbox->dev, "%s\t[%02d] %08x\n", __func__, i, val);
+ }
+}
+
+static void omap2_mbox_restore_ctx(struct omap_mbox *mbox)
+{
+ int i;
+ struct omap_mbox2_priv *p = mbox->priv;
+
+ for (i = 0; i < MBOX_REG_SIZE; i += sizeof(u32)) {
+ u32 val;
+
+ val = *(u32 *)(p->ctx + i);
+ mbox_write_reg(val, i);
+
+ dev_dbg(mbox->dev, "%s\t[%02d] %08x\n", __func__, i, val);
+ }
+}
+
static struct omap_mbox_ops omap2_mbox_ops = {
.type = OMAP_MBOX_TYPE2,
.startup = omap2_mbox_startup,
.disable_irq = omap2_mbox_disable_irq,
.ack_irq = omap2_mbox_ack_irq,
.is_irq = omap2_mbox_is_irq,
+ .save_ctx = omap2_mbox_save_ctx,
+ .restore_ctx = omap2_mbox_restore_ctx,
};
/*
/* DSP */
static struct omap_mbox2_priv omap2_mbox_dsp_priv = {
.tx_fifo = {
- .msg = MAILBOX_MESSAGE_0,
- .fifo_stat = MAILBOX_FIFOSTATUS_0,
+ .msg = MAILBOX_MESSAGE(0),
+ .fifo_stat = MAILBOX_FIFOSTATUS(0),
},
.rx_fifo = {
- .msg = MAILBOX_MESSAGE_1,
- .msg_stat = MAILBOX_MSGSTATUS_1,
+ .msg = MAILBOX_MESSAGE(1),
+ .msg_stat = MAILBOX_MSGSTATUS(1),
},
- .irqenable = MAILBOX_IRQENABLE_0,
- .irqstatus = MAILBOX_IRQSTATUS_0,
+ .irqenable = MAILBOX_IRQENABLE(0),
+ .irqstatus = MAILBOX_IRQSTATUS(0),
.notfull_bit = MAILBOX_IRQ_NOTFULL(0),
.newmsg_bit = MAILBOX_IRQ_NEWMSG(1),
};
};
EXPORT_SYMBOL(mbox_dsp_info);
-/* IVA */
+#if defined(CONFIG_ARCH_OMAP2420) /* IVA */
static struct omap_mbox2_priv omap2_mbox_iva_priv = {
.tx_fifo = {
- .msg = MAILBOX_MESSAGE_2,
- .fifo_stat = MAILBOX_FIFOSTATUS_2,
+ .msg = MAILBOX_MESSAGE(2),
+ .fifo_stat = MAILBOX_FIFOSTATUS(2),
},
.rx_fifo = {
- .msg = MAILBOX_MESSAGE_3,
- .msg_stat = MAILBOX_MSGSTATUS_3,
+ .msg = MAILBOX_MESSAGE(3),
+ .msg_stat = MAILBOX_MSGSTATUS(3),
},
- .irqenable = MAILBOX_IRQENABLE_3,
- .irqstatus = MAILBOX_IRQSTATUS_3,
+ .irqenable = MAILBOX_IRQENABLE(3),
+ .irqstatus = MAILBOX_IRQSTATUS(3),
.notfull_bit = MAILBOX_IRQ_NOTFULL(2),
.newmsg_bit = MAILBOX_IRQ_NEWMSG(3),
};
.ops = &omap2_mbox_ops,
.priv = &omap2_mbox_iva_priv,
};
+#endif
-static int __init omap2_mbox_probe(struct platform_device *pdev)
+static int __devinit omap2_mbox_probe(struct platform_device *pdev)
{
struct resource *res;
- int ret = 0;
-
- if (pdev->num_resources != 3) {
- dev_err(&pdev->dev, "invalid number of resources: %d\n",
- pdev->num_resources);
- return -ENODEV;
- }
+ int ret;
/* MBOX base */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
dev_err(&pdev->dev, "invalid mem resource\n");
return -ENODEV;
}
- mbox_base = res->start;
+ mbox_base = ioremap(res->start, res->end - res->start);
+ if (!mbox_base)
+ return -ENOMEM;
- /* DSP IRQ */
+ /* DSP or IVA2 IRQ */
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (unlikely(!res)) {
dev_err(&pdev->dev, "invalid irq resource\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto err_dsp;
}
mbox_dsp_info.irq = res->start;
- ret = omap_mbox_register(&mbox_dsp_info);
-
- /* IVA IRQ */
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
- if (unlikely(!res)) {
- dev_err(&pdev->dev, "invalid irq resource\n");
- return -ENODEV;
+ ret = omap_mbox_register(&pdev->dev, &mbox_dsp_info);
+ if (ret)
+ goto err_dsp;
+
+#if defined(CONFIG_ARCH_OMAP2420) /* IVA */
+ if (cpu_is_omap2420()) {
+ /* IVA IRQ */
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
+ if (unlikely(!res)) {
+ dev_err(&pdev->dev, "invalid irq resource\n");
+ ret = -ENODEV;
+ goto err_iva1;
+ }
+ mbox_iva_info.irq = res->start;
+ ret = omap_mbox_register(&pdev->dev, &mbox_iva_info);
+ if (ret)
+ goto err_iva1;
}
- mbox_iva_info.irq = res->start;
-
- ret = omap_mbox_register(&mbox_iva_info);
+#endif
+ return 0;
+err_iva1:
+ omap_mbox_unregister(&mbox_dsp_info);
+err_dsp:
+ iounmap(mbox_base);
return ret;
}
-static int omap2_mbox_remove(struct platform_device *pdev)
+static int __devexit omap2_mbox_remove(struct platform_device *pdev)
{
+#if defined(CONFIG_ARCH_OMAP2420)
+ omap_mbox_unregister(&mbox_iva_info);
+#endif
omap_mbox_unregister(&mbox_dsp_info);
+ iounmap(mbox_base);
return 0;
}
static struct platform_driver omap2_mbox_driver = {
.probe = omap2_mbox_probe,
- .remove = omap2_mbox_remove,
+ .remove = __devexit_p(omap2_mbox_remove),
.driver = {
- .name = "mailbox",
+ .name = DRV_NAME,
},
};
module_init(omap2_mbox_init);
module_exit(omap2_mbox_exit);
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("omap mailbox: omap2/3 architecture specific functions");
+MODULE_AUTHOR("Hiroshi DOYU <Hiroshi.DOYU@nokia.com>, Paul Mundt");
+MODULE_ALIAS("platform:"DRV_NAME);
default n
help
Say Y here if you want to use OMAP Mailbox framework support for
- DSP and IVA1.0 in OMAP1/2.
+ DSP, IVA1.0 and IVA2 in OMAP1/2/3.
choice
prompt "System timer"
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 {
mbox_msg_t seq_snd, seq_rcv;
- struct device dev;
+ struct device *dev;
struct omap_mbox *next;
void *priv;
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_register(struct device *parent, struct omap_mbox *);
int omap_mbox_unregister(struct omap_mbox *);
+static inline 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);
+}
+
+static inline 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);
+}
+
#endif /* MAILBOX_H */
#define OMAP2_PRM_BASE OMAP3430_PRM_BASE
#define OMAP2_VA_IC_BASE IO_ADDRESS(OMAP34XX_IC_BASE)
#define OMAP34XX_CAMERA_BASE (L4_34XX_BASE + 0xBC000)
+#define OMAP34XX_MAILBOX_BASE (L4_34XX_BASE + 0x94000)
#endif
/*
* OMAP mailbox driver
*
- * Copyright (C) 2006 Nokia Corporation. All rights reserved.
+ * Copyright (C) 2006-2008 Nokia Corporation. All rights reserved.
*
- * Contact: Toshihiro Kobayashi <toshihiro.kobayashi@nokia.com>
- * Restructured by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ * Contact: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
*
*/
-#include <linux/init.h>
#include <linux/module.h>
-#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/device.h>
-#include <linux/blkdev.h>
-#include <linux/err.h>
#include <linux/delay.h>
-#include <linux/io.h>
+
#include <mach/mailbox.h>
-#include "mailbox.h"
+
+static int enable_seq_bit;
+module_param(enable_seq_bit, bool, 0);
+MODULE_PARM_DESC(enable_seq_bit, "Enable sequence bit checking.");
static struct omap_mbox *mboxes;
static DEFINE_RWLOCK(mboxes_lock);
+/*
+ * Mailbox sequence bit API
+ */
+
+/* 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)
+{
+ if (!enable_seq_bit)
+ return;
+
+ /* 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)
+{
+ if (!enable_seq_bit)
+ return;
+
+ /* 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;
+
+ if (!enable_seq_bit)
+ return 0;
+
+ seq = msg & (1 << 31);
+ if (seq == mbox->seq_rcv)
+ return -1;
+ mbox->seq_rcv = seq;
+ return 0;
+}
+
+/* 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)
{
unsigned long flags;
if (mbox->rxq->callback == NULL) {
- sysfs_notify(&mbox->dev.kobj, NULL, "mbox");
+ sysfs_notify(&mbox->dev->kobj, NULL, "mbox");
return;
}
/* no more messages in the fifo. clear IRQ source. */
ack_mbox_irq(mbox, IRQ_RX);
enable_mbox_irq(mbox, IRQ_RX);
- nomem:
+nomem:
schedule_work(&mbox->rxq->work);
}
static CLASS_ATTR(mbox, S_IRUGO, mbox_show, NULL);
static struct class omap_mbox_class = {
- .name = "omap_mbox",
+ .name = "omap-mailbox",
};
static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox,
return ret;
}
- mbox->dev.class = &omap_mbox_class;
- dev_set_name(&mbox->dev, "%s", mbox->name);
- dev_set_drvdata(&mbox->dev, mbox);
-
- ret = device_register(&mbox->dev);
- if (unlikely(ret))
- goto fail_device_reg;
-
- ret = device_create_file(&mbox->dev, &dev_attr_mbox);
- if (unlikely(ret)) {
- printk(KERN_ERR
- "device_create_file failed: %d\n", ret);
- goto fail_create_mbox;
- }
-
ret = request_irq(mbox->irq, mbox_interrupt, IRQF_DISABLED,
mbox->name, mbox);
if (unlikely(ret)) {
fail_alloc_txq:
free_irq(mbox->irq, mbox);
fail_request_irq:
- device_remove_file(&mbox->dev, &dev_attr_mbox);
- fail_create_mbox:
- device_unregister(&mbox->dev);
- fail_device_reg:
if (unlikely(mbox->ops->shutdown))
mbox->ops->shutdown(mbox);
mbox_queue_free(mbox->rxq);
free_irq(mbox->irq, mbox);
- device_remove_file(&mbox->dev, &dev_attr_mbox);
- class_unregister(&omap_mbox_class);
if (unlikely(mbox->ops->shutdown))
mbox->ops->shutdown(mbox);
}
EXPORT_SYMBOL(omap_mbox_put);
-int omap_mbox_register(struct omap_mbox *mbox)
+int omap_mbox_register(struct device *parent, struct omap_mbox *mbox)
{
int ret = 0;
struct omap_mbox **tmp;
if (mbox->next)
return -EBUSY;
+ mbox->dev = device_create(&omap_mbox_class,
+ parent, 0, mbox, "%s", mbox->name);
+ if (IS_ERR(mbox->dev))
+ return PTR_ERR(mbox->dev);
+
+ ret = device_create_file(mbox->dev, &dev_attr_mbox);
+ if (ret)
+ goto err_sysfs;
+
write_lock(&mboxes_lock);
tmp = find_mboxes(mbox->name);
- if (*tmp)
+ if (*tmp) {
ret = -EBUSY;
- else
- *tmp = mbox;
+ write_unlock(&mboxes_lock);
+ goto err_find;
+ }
+ *tmp = mbox;
write_unlock(&mboxes_lock);
+ return 0;
+
+err_find:
+ device_remove_file(mbox->dev, &dev_attr_mbox);
+err_sysfs:
+ device_unregister(mbox->dev);
return ret;
}
EXPORT_SYMBOL(omap_mbox_register);
*tmp = mbox->next;
mbox->next = NULL;
write_unlock(&mboxes_lock);
+ device_remove_file(mbox->dev, &dev_attr_mbox);
+ device_unregister(mbox->dev);
return 0;
}
tmp = &(*tmp)->next;
subsys_initcall(omap_mbox_class_init);
module_exit(omap_mbox_class_exit);
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("omap mailbox: interrupt driven messaging");
+MODULE_AUTHOR("Toshihiro Kobayashi and Hiroshi DOYU");
+++ /dev/null
-/*
- * Mailbox internal functions
- *
- * Copyright (C) 2006 Nokia Corporation
- * Written by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#ifndef __ARCH_ARM_PLAT_MAILBOX_H
-#define __ARCH_ARM_PLAT_MAILBOX_H
-
-/*
- * 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);
-}
-
-#endif /* __ARCH_ARM_PLAT_MAILBOX_H */
projects / linux-2.6-omap-h63xx.git / commitdiff