mailbox/omap: remove OMAP1 mailbox driver

There are no existing users for OMAP1 mailbox driver
in kernel. Commit ab6f775 "Removing dead OMAP_DSP"
has cleaned up all the dead code related to the only
possible user, including the creation of the mailbox
platform device.

Remove this stale driver so that the OMAP mailbox
driver can be simplified and streamlined better for
converting to mailbox framework.

Signed-off-by: Suman Anna <s-anna@ti.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/configs/omap1_defconfig

@@ -26,8 +26,6 @@ CONFIG_ARCH_OMAP=y
 CONFIG_ARCH_OMAP1=y
 CONFIG_OMAP_RESET_CLOCKS=y
 # CONFIG_OMAP_MUX is not set
-CONFIG_MAILBOX=y
-CONFIG_OMAP1_MBOX=y
 CONFIG_OMAP_32K_TIMER=y
 CONFIG_OMAP_DM_TIMER=y
 CONFIG_ARCH_OMAP730=y

drivers/mailbox/Kconfig

@@ -20,17 +20,8 @@ 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
-	help
-	  Mailbox implementation for OMAP chips with hardware for
-	  interprocessor communication involving DSP in OMAP1. Say Y here
-	  if you want to use OMAP1 Mailbox framework support.
+	  driver such as CONFIG_OMAP2PLUS_MBOX. This enables the common OMAP
+	  mailbox framework code.
 
 config OMAP2PLUS_MBOX
 	tristate "OMAP2+ Mailbox framework support"
@@ -44,7 +35,7 @@ config OMAP2PLUS_MBOX
 
 config OMAP_MBOX_KFIFO_SIZE
 	int "Mailbox kfifo default buffer size (bytes)"
-	depends on OMAP2PLUS_MBOX || OMAP1_MBOX
+	depends on OMAP2PLUS_MBOX
 	default 256
 	help
 	  Specify the default size of mailbox's kfifo buffers (bytes).

drivers/mailbox/Makefile

@@ -1,7 +1,5 @@
 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
 mailbox_omap2-objs		:= mailbox-omap2.o

drivers/mailbox/mailbox-omap1.c

@@ -1,203 +0,0 @@
-/*
- * Mailbox reservation modules for OMAP1
- *
- * Copyright (C) 2006-2009 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.
- */
-
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-
-#include "omap-mbox.h"
-
-#define MAILBOX_ARM2DSP1		0x00
-#define MAILBOX_ARM2DSP1b		0x04
-#define MAILBOX_DSP2ARM1		0x08
-#define MAILBOX_DSP2ARM1b		0x0c
-#define MAILBOX_DSP2ARM2		0x10
-#define MAILBOX_DSP2ARM2b		0x14
-#define MAILBOX_ARM2DSP1_Flag		0x18
-#define MAILBOX_DSP2ARM1_Flag		0x1c
-#define MAILBOX_DSP2ARM2_Flag		0x20
-
-static void __iomem *mbox_base;
-
-struct omap_mbox1_fifo {
-	unsigned long cmd;
-	unsigned long data;
-	unsigned long flag;
-};
-
-struct omap_mbox1_priv {
-	struct omap_mbox1_fifo tx_fifo;
-	struct omap_mbox1_fifo rx_fifo;
-};
-
-static inline int mbox_read_reg(size_t ofs)
-{
-	return __raw_readw(mbox_base + ofs);
-}
-
-static inline void mbox_write_reg(u32 val, size_t ofs)
-{
-	__raw_writew(val, mbox_base + ofs);
-}
-
-/* msg */
-static mbox_msg_t omap1_mbox_fifo_read(struct omap_mbox *mbox)
-{
-	struct omap_mbox1_fifo *fifo =
-		&((struct omap_mbox1_priv *)mbox->priv)->rx_fifo;
-	mbox_msg_t msg;
-
-	msg = mbox_read_reg(fifo->data);
-	msg |= ((mbox_msg_t) mbox_read_reg(fifo->cmd)) << 16;
-
-	return msg;
-}
-
-static void
-omap1_mbox_fifo_write(struct omap_mbox *mbox, mbox_msg_t msg)
-{
-	struct omap_mbox1_fifo *fifo =
-		&((struct omap_mbox1_priv *)mbox->priv)->tx_fifo;
-
-	mbox_write_reg(msg & 0xffff, fifo->data);
-	mbox_write_reg(msg >> 16, fifo->cmd);
-}
-
-static int omap1_mbox_fifo_empty(struct omap_mbox *mbox)
-{
-	return 0;
-}
-
-static int omap1_mbox_fifo_full(struct omap_mbox *mbox)
-{
-	struct omap_mbox1_fifo *fifo =
-		&((struct omap_mbox1_priv *)mbox->priv)->rx_fifo;
-
-	return mbox_read_reg(fifo->flag);
-}
-
-/* irq */
-static void
-omap1_mbox_enable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
-{
-	if (irq == IRQ_RX)
-		enable_irq(mbox->irq);
-}
-
-static void
-omap1_mbox_disable_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
-{
-	if (irq == IRQ_RX)
-		disable_irq(mbox->irq);
-}
-
-static int
-omap1_mbox_is_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq)
-{
-	if (irq == IRQ_TX)
-		return 0;
-	return 1;
-}
-
-static struct omap_mbox_ops omap1_mbox_ops = {
-	.type		= OMAP_MBOX_TYPE1,
-	.fifo_read	= omap1_mbox_fifo_read,
-	.fifo_write	= omap1_mbox_fifo_write,
-	.fifo_empty	= omap1_mbox_fifo_empty,
-	.fifo_full	= omap1_mbox_fifo_full,
-	.enable_irq	= omap1_mbox_enable_irq,
-	.disable_irq	= omap1_mbox_disable_irq,
-	.is_irq		= omap1_mbox_is_irq,
-};
-
-/* FIXME: the following struct should be created automatically by the user id */
-
-/* DSP */
-static struct omap_mbox1_priv omap1_mbox_dsp_priv = {
-	.tx_fifo = {
-		.cmd	= MAILBOX_ARM2DSP1b,
-		.data	= MAILBOX_ARM2DSP1,
-		.flag	= MAILBOX_ARM2DSP1_Flag,
-	},
-	.rx_fifo = {
-		.cmd	= MAILBOX_DSP2ARM1b,
-		.data	= MAILBOX_DSP2ARM1,
-		.flag	= MAILBOX_DSP2ARM1_Flag,
-	},
-};
-
-static struct omap_mbox mbox_dsp_info = {
-	.name	= "dsp",
-	.ops	= &omap1_mbox_ops,
-	.priv	= &omap1_mbox_dsp_priv,
-};
-
-static struct omap_mbox *omap1_mboxes[] = { &mbox_dsp_info, NULL };
-
-static int omap1_mbox_probe(struct platform_device *pdev)
-{
-	struct resource *mem;
-	int ret;
-	struct omap_mbox **list;
-
-	list = omap1_mboxes;
-	list[0]->irq = platform_get_irq_byname(pdev, "dsp");
-
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!mem)
-		return -ENOENT;
-
-	mbox_base = ioremap(mem->start, resource_size(mem));
-	if (!mbox_base)
-		return -ENOMEM;
-
-	ret = omap_mbox_register(&pdev->dev, list);
-	if (ret) {
-		iounmap(mbox_base);
-		return ret;
-	}
-
-	return 0;
-}
-
-static int omap1_mbox_remove(struct platform_device *pdev)
-{
-	omap_mbox_unregister();
-	iounmap(mbox_base);
-	return 0;
-}
-
-static struct platform_driver omap1_mbox_driver = {
-	.probe	= omap1_mbox_probe,
-	.remove	= omap1_mbox_remove,
-	.driver	= {
-		.name	= "omap-mailbox",
-	},
-};
-
-static int __init omap1_mbox_init(void)
-{
-	return platform_driver_register(&omap1_mbox_driver);
-}
-
-static void __exit omap1_mbox_exit(void)
-{
-	platform_driver_unregister(&omap1_mbox_driver);
-}
-
-module_init(omap1_mbox_init);
-module_exit(omap1_mbox_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("omap mailbox: omap1 architecture specific functions");
-MODULE_AUTHOR("Hiroshi DOYU <Hiroshi.DOYU@nokia.com>");
-MODULE_ALIAS("platform:omap1-mailbox");