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Diffstat (limited to 'arch/arm/mach-omap2/mailbox.c')
-rw-r--r--arch/arm/mach-omap2/mailbox.c318
1 files changed, 0 insertions, 318 deletions
diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c
deleted file mode 100644
index b03cd06e055..00000000000
--- a/arch/arm/mach-omap2/mailbox.c
+++ /dev/null
@@ -1,318 +0,0 @@
-/*
- * Mailbox reservation modules for OMAP2
- *
- * Copyright (C) 2006 Nokia Corporation
- * Written by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
- * and Paul Mundt <paul.mundt@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.
- */
-
-#include <linux/kernel.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/platform_device.h>
-#include <asm/arch/mailbox.h>
-#include <asm/arch/irqs.h>
-#include <asm/io.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)))
-
-struct omap_mbox2_fifo {
- unsigned long msg;
- unsigned long fifo_stat;
- unsigned long msg_stat;
-};
-
-struct omap_mbox2_priv {
- struct omap_mbox2_fifo tx_fifo;
- struct omap_mbox2_fifo rx_fifo;
- unsigned long irqenable;
- unsigned long irqstatus;
- u32 newmsg_bit;
- u32 notfull_bit;
-};
-
-static struct clk *mbox_ick_handle;
-
-static inline unsigned int mbox_read_reg(unsigned int reg)
-{
- return __raw_readl(mbox_base + reg);
-}
-
-static inline void mbox_write_reg(unsigned int val, unsigned int reg)
-{
- __raw_writel(val, mbox_base + reg);
-}
-
-/* Mailbox H/W preparations */
-static inline int omap2_mbox_startup(struct omap_mbox *mbox)
-{
- unsigned int l;
-
- mbox_ick_handle = clk_get(NULL, "mailboxes_ick");
- if (IS_ERR(mbox_ick_handle)) {
- printk("Could not get mailboxes_ick\n");
- return -ENODEV;
- }
- clk_enable(mbox_ick_handle);
-
- /* set smart-idle & autoidle */
- l = mbox_read_reg(MAILBOX_SYSCONFIG);
- l |= 0x00000011;
- mbox_write_reg(l, MAILBOX_SYSCONFIG);
-
- return 0;
-}
-
-static inline void omap2_mbox_shutdown(struct omap_mbox *mbox)
-{
- clk_disable(mbox_ick_handle);
- clk_put(mbox_ick_handle);
-}
-
-/* Mailbox FIFO handle functions */
-static inline mbox_msg_t omap2_mbox_fifo_read(struct omap_mbox *mbox)
-{
- struct omap_mbox2_fifo *fifo =
- &((struct omap_mbox2_priv *)mbox->priv)->rx_fifo;
- return (mbox_msg_t) mbox_read_reg(fifo->msg);
-}
-
-static inline void omap2_mbox_fifo_write(struct omap_mbox *mbox, mbox_msg_t msg)
-{
- struct omap_mbox2_fifo *fifo =
- &((struct omap_mbox2_priv *)mbox->priv)->tx_fifo;
- mbox_write_reg(msg, fifo->msg);
-}
-
-static inline int omap2_mbox_fifo_empty(struct omap_mbox *mbox)
-{
- struct omap_mbox2_fifo *fifo =
- &((struct omap_mbox2_priv *)mbox->priv)->rx_fifo;
- return (mbox_read_reg(fifo->msg_stat) == 0);
-}
-
-static inline int omap2_mbox_fifo_full(struct omap_mbox *mbox)
-{
- struct omap_mbox2_fifo *fifo =
- &((struct omap_mbox2_priv *)mbox->priv)->tx_fifo;
- return (mbox_read_reg(fifo->fifo_stat));
-}
-
-/* Mailbox IRQ handle functions */
-static inline void omap2_mbox_enable_irq(struct omap_mbox *mbox,
- omap_mbox_type_t irq)
-{
- struct omap_mbox2_priv *p = (struct omap_mbox2_priv *)mbox->priv;
- u32 l, bit = (irq == IRQ_TX) ? p->notfull_bit : p->newmsg_bit;
-
- l = mbox_read_reg(p->irqenable);
- l |= bit;
- mbox_write_reg(l, p->irqenable);
-}
-
-static inline void omap2_mbox_disable_irq(struct omap_mbox *mbox,
- omap_mbox_type_t irq)
-{
- struct omap_mbox2_priv *p = (struct omap_mbox2_priv *)mbox->priv;
- u32 l, bit = (irq == IRQ_TX) ? p->notfull_bit : p->newmsg_bit;
-
- l = mbox_read_reg(p->irqenable);
- l &= ~bit;
- mbox_write_reg(l, p->irqenable);
-}
-
-static inline void omap2_mbox_ack_irq(struct omap_mbox *mbox,
- omap_mbox_type_t irq)
-{
- struct omap_mbox2_priv *p = (struct omap_mbox2_priv *)mbox->priv;
- u32 bit = (irq == IRQ_TX) ? p->notfull_bit : p->newmsg_bit;
-
- mbox_write_reg(bit, p->irqstatus);
-}
-
-static inline int omap2_mbox_is_irq(struct omap_mbox *mbox,
- omap_mbox_type_t irq)
-{
- struct omap_mbox2_priv *p = (struct omap_mbox2_priv *)mbox->priv;
- u32 bit = (irq == IRQ_TX) ? p->notfull_bit : p->newmsg_bit;
- u32 enable = mbox_read_reg(p->irqenable);
- u32 status = mbox_read_reg(p->irqstatus);
-
- return (enable & status & bit);
-}
-
-static struct omap_mbox_ops omap2_mbox_ops = {
- .type = OMAP_MBOX_TYPE2,
- .startup = omap2_mbox_startup,
- .shutdown = omap2_mbox_shutdown,
- .fifo_read = omap2_mbox_fifo_read,
- .fifo_write = omap2_mbox_fifo_write,
- .fifo_empty = omap2_mbox_fifo_empty,
- .fifo_full = omap2_mbox_fifo_full,
- .enable_irq = omap2_mbox_enable_irq,
- .disable_irq = omap2_mbox_disable_irq,
- .ack_irq = omap2_mbox_ack_irq,
- .is_irq = omap2_mbox_is_irq,
-};
-
-/*
- * MAILBOX 0: ARM -> DSP,
- * MAILBOX 1: ARM <- DSP.
- * MAILBOX 2: ARM -> IVA,
- * MAILBOX 3: ARM <- IVA.
- */
-
-/* FIXME: the following structs should be filled automatically by the user id */
-
-/* DSP */
-static struct omap_mbox2_priv omap2_mbox_dsp_priv = {
- .tx_fifo = {
- .msg = MAILBOX_MESSAGE_0,
- .fifo_stat = MAILBOX_FIFOSTATUS_0,
- },
- .rx_fifo = {
- .msg = MAILBOX_MESSAGE_1,
- .msg_stat = MAILBOX_MSGSTATUS_1,
- },
- .irqenable = MAILBOX_IRQENABLE_0,
- .irqstatus = MAILBOX_IRQSTATUS_0,
- .notfull_bit = MAILBOX_IRQ_NOTFULL(0),
- .newmsg_bit = MAILBOX_IRQ_NEWMSG(1),
-};
-
-struct omap_mbox mbox_dsp_info = {
- .name = "dsp",
- .ops = &omap2_mbox_ops,
- .priv = &omap2_mbox_dsp_priv,
-};
-EXPORT_SYMBOL(mbox_dsp_info);
-
-/* IVA */
-static struct omap_mbox2_priv omap2_mbox_iva_priv = {
- .tx_fifo = {
- .msg = MAILBOX_MESSAGE_2,
- .fifo_stat = MAILBOX_FIFOSTATUS_2,
- },
- .rx_fifo = {
- .msg = MAILBOX_MESSAGE_3,
- .msg_stat = MAILBOX_MSGSTATUS_3,
- },
- .irqenable = MAILBOX_IRQENABLE_3,
- .irqstatus = MAILBOX_IRQSTATUS_3,
- .notfull_bit = MAILBOX_IRQ_NOTFULL(2),
- .newmsg_bit = MAILBOX_IRQ_NEWMSG(3),
-};
-
-static struct omap_mbox mbox_iva_info = {
- .name = "iva",
- .ops = &omap2_mbox_ops,
- .priv = &omap2_mbox_iva_priv,
-};
-
-static int __init 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;
- }
-
- /* MBOX base */
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (unlikely(!res)) {
- dev_err(&pdev->dev, "invalid mem resource\n");
- return -ENODEV;
- }
- mbox_base = res->start;
-
- /* DSP IRQ */
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (unlikely(!res)) {
- dev_err(&pdev->dev, "invalid irq resource\n");
- return -ENODEV;
- }
- 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;
- }
- mbox_iva_info.irq = res->start;
-
- ret = omap_mbox_register(&mbox_iva_info);
-
- return ret;
-}
-
-static int omap2_mbox_remove(struct platform_device *pdev)
-{
- omap_mbox_unregister(&mbox_dsp_info);
- return 0;
-}
-
-static struct platform_driver omap2_mbox_driver = {
- .probe = omap2_mbox_probe,
- .remove = omap2_mbox_remove,
- .driver = {
- .name = "mailbox",
- },
-};
-
-static int __init omap2_mbox_init(void)
-{
- return platform_driver_register(&omap2_mbox_driver);
-}
-
-static void __exit omap2_mbox_exit(void)
-{
- platform_driver_unregister(&omap2_mbox_driver);
-}
-
-module_init(omap2_mbox_init);
-module_exit(omap2_mbox_exit);
-
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 03:40:11 +0000