Merge tag 'mips_6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS updates from Thomas Bogendoerfer:

 - removed AR7 platform support

 - cleanups and fixes

* tag 'mips_6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: AR7: remove platform
  watchdog: ar7_wdt: remove driver to prepare for platform removal
  vlynq: remove bus driver
  mtd: parsers: ar7: remove support
  serial: 8250: remove AR7 support
  arch: mips: remove ReiserFS from defconfig
  MIPS: lantiq: Remove unnecessary include of <linux/of_irq.h>
  MIPS: lantiq: Fix pcibios_plat_dev_init() "no previous prototype" warning
  MIPS: KVM: Fix a build warning about variable set but not used
  MIPS: Remove dead code in relocate_new_kernel
  mips: dts: ralink: mt7621: rename to GnuBee GB-PC1 and GnuBee GB-PC2
  mips: dts: ralink: mt7621: define each reset as an item
  mips: dts: ingenic: Remove unneeded probe-type properties
  MIPS: loongson32: Remove dma.h and nand.h

12 files changed, 0 insertions, 1293 deletions

diff --git a/drivers/Kconfig b/drivers/Kconfig
index 9826907eb06e..7bdad836fc62 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -135,8 +135,6 @@ source "drivers/uio/Kconfig"
 
 source "drivers/vfio/Kconfig"
 
-source "drivers/vlynq/Kconfig"
-
 source "drivers/virt/Kconfig"
 
 source "drivers/virtio/Kconfig"
diff --git a/drivers/Makefile b/drivers/Makefile
index 722d15be0eb7..d828329c268d 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -151,7 +151,6 @@ obj-$(CONFIG_BCMA)		+= bcma/
 obj-$(CONFIG_VHOST_RING)	+= vhost/
 obj-$(CONFIG_VHOST_IOTLB)	+= vhost/
 obj-$(CONFIG_VHOST)		+= vhost/
-obj-$(CONFIG_VLYNQ)		+= vlynq/
 obj-$(CONFIG_GREYBUS)		+= greybus/
 obj-$(CONFIG_COMEDI)		+= comedi/
 obj-$(CONFIG_STAGING)		+= staging/
diff --git a/drivers/mtd/parsers/Kconfig b/drivers/mtd/parsers/Kconfig
index 60738edcd5d5..da03ab6efe04 100644
--- a/drivers/mtd/parsers/Kconfig
+++ b/drivers/mtd/parsers/Kconfig
@@ -1,9 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
-config MTD_AR7_PARTS
-	tristate "TI AR7 partitioning parser"
-	help
-	  TI AR7 partitioning parser support
-
 config MTD_BCM47XX_PARTS
 	tristate "BCM47XX partitioning parser"
 	depends on BCM47XX || ARCH_BCM_5301X
diff --git a/drivers/mtd/parsers/Makefile b/drivers/mtd/parsers/Makefile
index 0e70b621a1d8..9b00c62b837a 100644
--- a/drivers/mtd/parsers/Makefile
+++ b/drivers/mtd/parsers/Makefile
@@ -1,5 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_MTD_AR7_PARTS)		+= ar7part.o
 obj-$(CONFIG_MTD_BCM47XX_PARTS)		+= bcm47xxpart.o
 obj-$(CONFIG_MTD_BCM63XX_PARTS)		+= bcm63xxpart.o
 obj-$(CONFIG_MTD_BRCM_U_BOOT)		+= brcm_u-boot.o
diff --git a/drivers/mtd/parsers/ar7part.c b/drivers/mtd/parsers/ar7part.c
deleted file mode 100644
index 8cd683711ac6..000000000000
--- a/drivers/mtd/parsers/ar7part.c
+++ /dev/null
@@ -1,129 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright © 2007 Eugene Konev <ejka@openwrt.org>
- *
- * TI AR7 flash partition table.
- * Based on ar7 map by Felix Fietkau <nbd@openwrt.org>
- */
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-#include <linux/memblock.h>
-#include <linux/module.h>
-
-#include <uapi/linux/magic.h>
-
-#define AR7_PARTS	4
-#define ROOT_OFFSET	0xe0000
-
-#define LOADER_MAGIC1	le32_to_cpu(0xfeedfa42)
-#define LOADER_MAGIC2	le32_to_cpu(0xfeed1281)
-
-struct ar7_bin_rec {
-	unsigned int checksum;
-	unsigned int length;
-	unsigned int address;
-};
-
-static int create_mtd_partitions(struct mtd_info *master,
-				 const struct mtd_partition **pparts,
-				 struct mtd_part_parser_data *data)
-{
-	struct ar7_bin_rec header;
-	unsigned int offset;
-	size_t len;
-	unsigned int pre_size = master->erasesize, post_size = 0;
-	unsigned int root_offset = ROOT_OFFSET;
-
-	int retries = 10;
-	struct mtd_partition *ar7_parts;
-
-	ar7_parts = kcalloc(AR7_PARTS, sizeof(*ar7_parts), GFP_KERNEL);
-	if (!ar7_parts)
-		return -ENOMEM;
-	ar7_parts[0].name = "loader";
-	ar7_parts[0].offset = 0;
-	ar7_parts[0].size = master->erasesize;
-	ar7_parts[0].mask_flags = MTD_WRITEABLE;
-
-	ar7_parts[1].name = "config";
-	ar7_parts[1].offset = 0;
-	ar7_parts[1].size = master->erasesize;
-	ar7_parts[1].mask_flags = 0;
-
-	do { /* Try 10 blocks starting from master->erasesize */
-		offset = pre_size;
-		mtd_read(master, offset, sizeof(header), &len,
-			 (uint8_t *)&header);
-		if (!strncmp((char *)&header, "TIENV0.8", 8))
-			ar7_parts[1].offset = pre_size;
-		if (header.checksum == LOADER_MAGIC1)
-			break;
-		if (header.checksum == LOADER_MAGIC2)
-			break;
-		pre_size += master->erasesize;
-	} while (retries--);
-
-	pre_size = offset;
-
-	if (!ar7_parts[1].offset) {
-		ar7_parts[1].offset = master->size - master->erasesize;
-		post_size = master->erasesize;
-	}
-
-	switch (header.checksum) {
-	case LOADER_MAGIC1:
-		while (header.length) {
-			offset += sizeof(header) + header.length;
-			mtd_read(master, offset, sizeof(header), &len,
-				 (uint8_t *)&header);
-		}
-		root_offset = offset + sizeof(header) + 4;
-		break;
-	case LOADER_MAGIC2:
-		while (header.length) {
-			offset += sizeof(header) + header.length;
-			mtd_read(master, offset, sizeof(header), &len,
-				 (uint8_t *)&header);
-		}
-		root_offset = offset + sizeof(header) + 4 + 0xff;
-		root_offset &= ~(uint32_t)0xff;
-		break;
-	default:
-		printk(KERN_WARNING "Unknown magic: %08x\n", header.checksum);
-		break;
-	}
-
-	mtd_read(master, root_offset, sizeof(header), &len, (u8 *)&header);
-	if (header.checksum != SQUASHFS_MAGIC) {
-		root_offset += master->erasesize - 1;
-		root_offset &= ~(master->erasesize - 1);
-	}
-
-	ar7_parts[2].name = "linux";
-	ar7_parts[2].offset = pre_size;
-	ar7_parts[2].size = master->size - pre_size - post_size;
-	ar7_parts[2].mask_flags = 0;
-
-	ar7_parts[3].name = "rootfs";
-	ar7_parts[3].offset = root_offset;
-	ar7_parts[3].size = master->size - root_offset - post_size;
-	ar7_parts[3].mask_flags = 0;
-
-	*pparts = ar7_parts;
-	return AR7_PARTS;
-}
-
-static struct mtd_part_parser ar7_parser = {
-	.parse_fn = create_mtd_partitions,
-	.name = "ar7part",
-};
-module_mtd_part_parser(ar7_parser);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR(	"Felix Fietkau <nbd@openwrt.org>, "
-		"Eugene Konev <ejka@openwrt.org>");
-MODULE_DESCRIPTION("MTD partitioning for TI AR7");
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 925ee1d61afb..8ca061d3bbb9 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -170,13 +170,6 @@ static const struct serial8250_config uart_config[] = {
 		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
 		.flags		= UART_CAP_FIFO,
 	},
-	[PORT_AR7] = {
-		.name		= "AR7",
-		.fifo_size	= 16,
-		.tx_loadsz	= 16,
-		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00,
-		.flags		= UART_CAP_FIFO /* | UART_CAP_AFE */,
-	},
 	[PORT_U6_16550A] = {
 		.name		= "U6_16550A",
 		.fifo_size	= 64,
diff --git a/drivers/vlynq/Kconfig b/drivers/vlynq/Kconfig
deleted file mode 100644
index e7f9492a0b04..000000000000
--- a/drivers/vlynq/Kconfig
+++ /dev/null
@@ -1,21 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-menu "TI VLYNQ"
-	depends on AR7
-
-config VLYNQ
-	bool "TI VLYNQ bus support"
-	help
-	  Support for Texas Instruments(R) VLYNQ bus.
-	  The VLYNQ bus is a high-speed, serial and packetized
-	  data bus which allows external peripherals of a SoC
-	  to appear into the system's main memory.
-
-	  If unsure, say N
-
-config VLYNQ_DEBUG
-	bool "VLYNQ bus debug"
-	depends on VLYNQ && DEBUG_KERNEL
-	help
-	  Turn on VLYNQ bus debugging.
-
-endmenu
diff --git a/drivers/vlynq/Makefile b/drivers/vlynq/Makefile
deleted file mode 100644
index d9ce5b2b5ce0..000000000000
--- a/drivers/vlynq/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Makefile for kernel vlynq drivers
-#
-
-obj-$(CONFIG_VLYNQ) += vlynq.o
diff --git a/drivers/vlynq/vlynq.c b/drivers/vlynq/vlynq.c
deleted file mode 100644
index 4af6615808cc..000000000000
--- a/drivers/vlynq/vlynq.c
+++ /dev/null
@@ -1,799 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2006, 2007 Eugene Konev <ejka@openwrt.org>
- *
- * Parts of the VLYNQ specification can be found here:
- * http://www.ti.com/litv/pdf/sprue36a
- */
-
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/device.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/irq.h>
-
-#include <linux/vlynq.h>
-
-#define VLYNQ_CTRL_PM_ENABLE		0x80000000
-#define VLYNQ_CTRL_CLOCK_INT		0x00008000
-#define VLYNQ_CTRL_CLOCK_DIV(x)		(((x) & 7) << 16)
-#define VLYNQ_CTRL_INT_LOCAL		0x00004000
-#define VLYNQ_CTRL_INT_ENABLE		0x00002000
-#define VLYNQ_CTRL_INT_VECTOR(x)	(((x) & 0x1f) << 8)
-#define VLYNQ_CTRL_INT2CFG		0x00000080
-#define VLYNQ_CTRL_RESET		0x00000001
-
-#define VLYNQ_CTRL_CLOCK_MASK          (0x7 << 16)
-
-#define VLYNQ_INT_OFFSET		0x00000014
-#define VLYNQ_REMOTE_OFFSET		0x00000080
-
-#define VLYNQ_STATUS_LINK		0x00000001
-#define VLYNQ_STATUS_LERROR		0x00000080
-#define VLYNQ_STATUS_RERROR		0x00000100
-
-#define VINT_ENABLE			0x00000100
-#define VINT_TYPE_EDGE			0x00000080
-#define VINT_LEVEL_LOW			0x00000040
-#define VINT_VECTOR(x)			((x) & 0x1f)
-#define VINT_OFFSET(irq)		(8 * ((irq) % 4))
-
-#define VLYNQ_AUTONEGO_V2		0x00010000
-
-struct vlynq_regs {
-	u32 revision;
-	u32 control;
-	u32 status;
-	u32 int_prio;
-	u32 int_status;
-	u32 int_pending;
-	u32 int_ptr;
-	u32 tx_offset;
-	struct vlynq_mapping rx_mapping[4];
-	u32 chip;
-	u32 autonego;
-	u32 unused[6];
-	u32 int_device[8];
-};
-
-#ifdef CONFIG_VLYNQ_DEBUG
-static void vlynq_dump_regs(struct vlynq_device *dev)
-{
-	int i;
-
-	printk(KERN_DEBUG "VLYNQ local=%p remote=%p\n",
-			dev->local, dev->remote);
-	for (i = 0; i < 32; i++) {
-		printk(KERN_DEBUG "VLYNQ: local %d: %08x\n",
-			i + 1, ((u32 *)dev->local)[i]);
-		printk(KERN_DEBUG "VLYNQ: remote %d: %08x\n",
-			i + 1, ((u32 *)dev->remote)[i]);
-	}
-}
-
-static void vlynq_dump_mem(u32 *base, int count)
-{
-	int i;
-
-	for (i = 0; i < (count + 3) / 4; i++) {
-		if (i % 4 == 0)
-			printk(KERN_DEBUG "\nMEM[0x%04x]:", i * 4);
-		printk(KERN_DEBUG " 0x%08x", *(base + i));
-	}
-	printk(KERN_DEBUG "\n");
-}
-#endif
-
-/* Check the VLYNQ link status with a given device */
-static int vlynq_linked(struct vlynq_device *dev)
-{
-	int i;
-
-	for (i = 0; i < 100; i++)
-		if (readl(&dev->local->status) & VLYNQ_STATUS_LINK)
-			return 1;
-		else
-			cpu_relax();
-
-	return 0;
-}
-
-static void vlynq_reset(struct vlynq_device *dev)
-{
-	writel(readl(&dev->local->control) | VLYNQ_CTRL_RESET,
-			&dev->local->control);
-
-	/* Wait for the devices to finish resetting */
-	msleep(5);
-
-	/* Remove reset bit */
-	writel(readl(&dev->local->control) & ~VLYNQ_CTRL_RESET,
-			&dev->local->control);
-
-	/* Give some time for the devices to settle */
-	msleep(5);
-}
-
-static void vlynq_irq_unmask(struct irq_data *d)
-{
-	struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
-	int virq;
-	u32 val;
-
-	BUG_ON(!dev);
-	virq = d->irq - dev->irq_start;
-	val = readl(&dev->remote->int_device[virq >> 2]);
-	val |= (VINT_ENABLE | virq) << VINT_OFFSET(virq);
-	writel(val, &dev->remote->int_device[virq >> 2]);
-}
-
-static void vlynq_irq_mask(struct irq_data *d)
-{
-	struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
-	int virq;
-	u32 val;
-
-	BUG_ON(!dev);
-	virq = d->irq - dev->irq_start;
-	val = readl(&dev->remote->int_device[virq >> 2]);
-	val &= ~(VINT_ENABLE << VINT_OFFSET(virq));
-	writel(val, &dev->remote->int_device[virq >> 2]);
-}
-
-static int vlynq_irq_type(struct irq_data *d, unsigned int flow_type)
-{
-	struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
-	int virq;
-	u32 val;
-
-	BUG_ON(!dev);
-	virq = d->irq - dev->irq_start;
-	val = readl(&dev->remote->int_device[virq >> 2]);
-	switch (flow_type & IRQ_TYPE_SENSE_MASK) {
-	case IRQ_TYPE_EDGE_RISING:
-	case IRQ_TYPE_EDGE_FALLING:
-	case IRQ_TYPE_EDGE_BOTH:
-		val |= VINT_TYPE_EDGE << VINT_OFFSET(virq);
-		val &= ~(VINT_LEVEL_LOW << VINT_OFFSET(virq));
-		break;
-	case IRQ_TYPE_LEVEL_HIGH:
-		val &= ~(VINT_TYPE_EDGE << VINT_OFFSET(virq));
-		val &= ~(VINT_LEVEL_LOW << VINT_OFFSET(virq));
-		break;
-	case IRQ_TYPE_LEVEL_LOW:
-		val &= ~(VINT_TYPE_EDGE << VINT_OFFSET(virq));
-		val |= VINT_LEVEL_LOW << VINT_OFFSET(virq);
-		break;
-	default:
-		return -EINVAL;
-	}
-	writel(val, &dev->remote->int_device[virq >> 2]);
-	return 0;
-}
-
-static void vlynq_local_ack(struct irq_data *d)
-{
-	struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
-	u32 status = readl(&dev->local->status);
-
-	pr_debug("%s: local status: 0x%08x\n",
-		       dev_name(&dev->dev), status);
-	writel(status, &dev->local->status);
-}
-
-static void vlynq_remote_ack(struct irq_data *d)
-{
-	struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
-	u32 status = readl(&dev->remote->status);
-
-	pr_debug("%s: remote status: 0x%08x\n",
-		       dev_name(&dev->dev), status);
-	writel(status, &dev->remote->status);
-}
-
-static irqreturn_t vlynq_irq(int irq, void *dev_id)
-{
-	struct vlynq_device *dev = dev_id;
-	u32 status;
-	int virq = 0;
-
-	status = readl(&dev->local->int_status);
-	writel(status, &dev->local->int_status);
-
-	if (unlikely(!status))
-		spurious_interrupt();
-
-	while (status) {
-		if (status & 1)
-			do_IRQ(dev->irq_start + virq);
-		status >>= 1;
-		virq++;
-	}
-
-	return IRQ_HANDLED;
-}
-
-static struct irq_chip vlynq_irq_chip = {
-	.name = "vlynq",
-	.irq_unmask = vlynq_irq_unmask,
-	.irq_mask = vlynq_irq_mask,
-	.irq_set_type = vlynq_irq_type,
-};
-
-static struct irq_chip vlynq_local_chip = {
-	.name = "vlynq local error",
-	.irq_unmask = vlynq_irq_unmask,
-	.irq_mask = vlynq_irq_mask,
-	.irq_ack = vlynq_local_ack,
-};
-
-static struct irq_chip vlynq_remote_chip = {
-	.name = "vlynq local error",
-	.irq_unmask = vlynq_irq_unmask,
-	.irq_mask = vlynq_irq_mask,
-	.irq_ack = vlynq_remote_ack,
-};
-
-static int vlynq_setup_irq(struct vlynq_device *dev)
-{
-	u32 val;
-	int i, virq;
-
-	if (dev->local_irq == dev->remote_irq) {
-		printk(KERN_ERR
-		       "%s: local vlynq irq should be different from remote\n",
-		       dev_name(&dev->dev));
-		return -EINVAL;
-	}
-
-	/* Clear local and remote error bits */
-	writel(readl(&dev->local->status), &dev->local->status);
-	writel(readl(&dev->remote->status), &dev->remote->status);
-
-	/* Now setup interrupts */
-	val = VLYNQ_CTRL_INT_VECTOR(dev->local_irq);
-	val |= VLYNQ_CTRL_INT_ENABLE | VLYNQ_CTRL_INT_LOCAL |
-		VLYNQ_CTRL_INT2CFG;
-	val |= readl(&dev->local->control);
-	writel(VLYNQ_INT_OFFSET, &dev->local->int_ptr);
-	writel(val, &dev->local->control);
-
-	val = VLYNQ_CTRL_INT_VECTOR(dev->remote_irq);
-	val |= VLYNQ_CTRL_INT_ENABLE;
-	val |= readl(&dev->remote->control);
-	writel(VLYNQ_INT_OFFSET, &dev->remote->int_ptr);
-	writel(val, &dev->remote->int_ptr);
-	writel(val, &dev->remote->control);
-
-	for (i = dev->irq_start; i <= dev->irq_end; i++) {
-		virq = i - dev->irq_start;
-		if (virq == dev->local_irq) {
-			irq_set_chip_and_handler(i, &vlynq_local_chip,
-						 handle_level_irq);
-			irq_set_chip_data(i, dev);
-		} else if (virq == dev->remote_irq) {
-			irq_set_chip_and_handler(i, &vlynq_remote_chip,
-						 handle_level_irq);
-			irq_set_chip_data(i, dev);
-		} else {
-			irq_set_chip_and_handler(i, &vlynq_irq_chip,
-						 handle_simple_irq);
-			irq_set_chip_data(i, dev);
-			writel(0, &dev->remote->int_device[virq >> 2]);
-		}
-	}
-
-	if (request_irq(dev->irq, vlynq_irq, IRQF_SHARED, "vlynq", dev)) {
-		printk(KERN_ERR "%s: request_irq failed\n",
-					dev_name(&dev->dev));
-		return -EAGAIN;
-	}
-
-	return 0;
-}
-
-static void vlynq_device_release(struct device *dev)
-{
-	struct vlynq_device *vdev = to_vlynq_device(dev);
-	kfree(vdev);
-}
-
-static int vlynq_device_match(struct device *dev,
-			      struct device_driver *drv)
-{
-	struct vlynq_device *vdev = to_vlynq_device(dev);
-	struct vlynq_driver *vdrv = to_vlynq_driver(drv);
-	struct vlynq_device_id *ids = vdrv->id_table;
-
-	while (ids->id) {
-		if (ids->id == vdev->dev_id) {
-			vdev->divisor = ids->divisor;
-			vlynq_set_drvdata(vdev, ids);
-			printk(KERN_INFO "Driver found for VLYNQ "
-				"device: %08x\n", vdev->dev_id);
-			return 1;
-		}
-		printk(KERN_DEBUG "Not using the %08x VLYNQ device's driver"
-			" for VLYNQ device: %08x\n", ids->id, vdev->dev_id);
-		ids++;
-	}
-	return 0;
-}
-
-static int vlynq_device_probe(struct device *dev)
-{
-	struct vlynq_device *vdev = to_vlynq_device(dev);
-	struct vlynq_driver *drv = to_vlynq_driver(dev->driver);
-	struct vlynq_device_id *id = vlynq_get_drvdata(vdev);
-	int result = -ENODEV;
-
-	if (drv->probe)
-		result = drv->probe(vdev, id);
-	if (result)
-		put_device(dev);
-	return result;
-}
-
-static void vlynq_device_remove(struct device *dev)
-{
-	struct vlynq_driver *drv = to_vlynq_driver(dev->driver);
-
-	if (drv->remove)
-		drv->remove(to_vlynq_device(dev));
-}
-
-int __vlynq_register_driver(struct vlynq_driver *driver, struct module *owner)
-{
-	driver->driver.name = driver->name;
-	driver->driver.bus = &vlynq_bus_type;
-	return driver_register(&driver->driver);
-}
-EXPORT_SYMBOL(__vlynq_register_driver);
-
-void vlynq_unregister_driver(struct vlynq_driver *driver)
-{
-	driver_unregister(&driver->driver);
-}
-EXPORT_SYMBOL(vlynq_unregister_driver);
-
-/*
- * A VLYNQ remote device can clock the VLYNQ bus master
- * using a dedicated clock line. In that case, both the
- * remove device and the bus master should have the same
- * serial clock dividers configured. Iterate through the
- * 8 possible dividers until we actually link with the
- * device.
- */
-static int __vlynq_try_remote(struct vlynq_device *dev)
-{
-	int i;
-
-	vlynq_reset(dev);
-	for (i = dev->dev_id ? vlynq_rdiv2 : vlynq_rdiv8; dev->dev_id ?
-			i <= vlynq_rdiv8 : i >= vlynq_rdiv2;
-		dev->dev_id ? i++ : i--) {
-
-		if (!vlynq_linked(dev))
-			break;
-
-		writel((readl(&dev->remote->control) &
-				~VLYNQ_CTRL_CLOCK_MASK) |
-				VLYNQ_CTRL_CLOCK_INT |
-				VLYNQ_CTRL_CLOCK_DIV(i - vlynq_rdiv1),
-				&dev->remote->control);
-		writel((readl(&dev->local->control)
-				& ~(VLYNQ_CTRL_CLOCK_INT |
-				VLYNQ_CTRL_CLOCK_MASK)) |
-				VLYNQ_CTRL_CLOCK_DIV(i - vlynq_rdiv1),
-				&dev->local->control);
-
-		if (vlynq_linked(dev)) {
-			printk(KERN_DEBUG
-				"%s: using remote clock divisor %d\n",
-				dev_name(&dev->dev), i - vlynq_rdiv1 + 1);
-			dev->divisor = i;
-			return 0;
-		} else {
-			vlynq_reset(dev);
-		}
-	}
-
-	return -ENODEV;
-}
-
-/*
- * A VLYNQ remote device can be clocked by the VLYNQ bus
- * master using a dedicated clock line. In that case, only
- * the bus master configures the serial clock divider.
- * Iterate through the 8 possible dividers until we
- * actually get a link with the device.
- */
-static int __vlynq_try_local(struct vlynq_device *dev)
-{
-	int i;
-
-	vlynq_reset(dev);
-
-	for (i = dev->dev_id ? vlynq_ldiv2 : vlynq_ldiv8; dev->dev_id ?
-			i <= vlynq_ldiv8 : i >= vlynq_ldiv2;
-		dev->dev_id ? i++ : i--) {
-
-		writel((readl(&dev->local->control) &
-				~VLYNQ_CTRL_CLOCK_MASK) |
-				VLYNQ_CTRL_CLOCK_INT |
-				VLYNQ_CTRL_CLOCK_DIV(i - vlynq_ldiv1),
-				&dev->local->control);
-
-		if (vlynq_linked(dev)) {
-			printk(KERN_DEBUG
-				"%s: using local clock divisor %d\n",
-				dev_name(&dev->dev), i - vlynq_ldiv1 + 1);
-			dev->divisor = i;
-			return 0;
-		} else {
-			vlynq_reset(dev);
-		}
-	}
-
-	return -ENODEV;
-}
-
-/*
- * When using external clocking method, serial clock
- * is supplied by an external oscillator, therefore we
- * should mask the local clock bit in the clock control
- * register for both the bus master and the remote device.
- */
-static int __vlynq_try_external(struct vlynq_device *dev)
-{
-	vlynq_reset(dev);
-	if (!vlynq_linked(dev))
-		return -ENODEV;
-
-	writel((readl(&dev->remote->control) &
-			~VLYNQ_CTRL_CLOCK_INT),
-			&dev->remote->control);
-
-	writel((readl(&dev->local->control) &
-			~VLYNQ_CTRL_CLOCK_INT),
-			&dev->local->control);
-
-	if (vlynq_linked(dev)) {
-		printk(KERN_DEBUG "%s: using external clock\n",
-			dev_name(&dev->dev));
-			dev->divisor = vlynq_div_external;
-		return 0;
-	}
-
-	return -ENODEV;
-}
-
-static int __vlynq_enable_device(struct vlynq_device *dev)
-{
-	int result;
-	struct plat_vlynq_ops *ops = dev->dev.platform_data;
-
-	result = ops->on(dev);
-	if (result)
-		return result;
-
-	switch (dev->divisor) {
-	case vlynq_div_external:
-	case vlynq_div_auto:
-		/* When the device is brought from reset it should have clock
-		 * generation negotiated by hardware.
-		 * Check which device is generating clocks and perform setup
-		 * accordingly */
-		if (vlynq_linked(dev) && readl(&dev->remote->control) &
-		   VLYNQ_CTRL_CLOCK_INT) {
-			if (!__vlynq_try_remote(dev) ||
-				!__vlynq_try_local(dev)  ||
-				!__vlynq_try_external(dev))
-				return 0;
-		} else {
-			if (!__vlynq_try_external(dev) ||
-				!__vlynq_try_local(dev)    ||
-				!__vlynq_try_remote(dev))
-				return 0;
-		}
-		break;
-	case vlynq_ldiv1:
-	case vlynq_ldiv2:
-	case vlynq_ldiv3:
-	case vlynq_ldiv4:
-	case vlynq_ldiv5:
-	case vlynq_ldiv6:
-	case vlynq_ldiv7:
-	case vlynq_ldiv8:
-		writel(VLYNQ_CTRL_CLOCK_INT |
-			VLYNQ_CTRL_CLOCK_DIV(dev->divisor -
-			vlynq_ldiv1), &dev->local->control);
-		writel(0, &dev->remote->control);
-		if (vlynq_linked(dev)) {
-			printk(KERN_DEBUG
-				"%s: using local clock divisor %d\n",
-				dev_name(&dev->dev),
-				dev->divisor - vlynq_ldiv1 + 1);
-			return 0;
-		}
-		break;
-	case vlynq_rdiv1:
-	case vlynq_rdiv2:
-	case vlynq_rdiv3:
-	case vlynq_rdiv4:
-	case vlynq_rdiv5:
-	case vlynq_rdiv6:
-	case vlynq_rdiv7:
-	case vlynq_rdiv8:
-		writel(0, &dev->local->control);
-		writel(VLYNQ_CTRL_CLOCK_INT |
-			VLYNQ_CTRL_CLOCK_DIV(dev->divisor -
-			vlynq_rdiv1), &dev->remote->control);
-		if (vlynq_linked(dev)) {
-			printk(KERN_DEBUG
-				"%s: using remote clock divisor %d\n",
-				dev_name(&dev->dev),
-				dev->divisor - vlynq_rdiv1 + 1);
-			return 0;
-		}
-		break;
-	}
-
-	ops->off(dev);
-	return -ENODEV;
-}
-
-int vlynq_enable_device(struct vlynq_device *dev)
-{
-	struct plat_vlynq_ops *ops = dev->dev.platform_data;
-	int result = -ENODEV;
-
-	result = __vlynq_enable_device(dev);
-	if (result)
-		return result;
-
-	result = vlynq_setup_irq(dev);
-	if (result)
-		ops->off(dev);
-
-	dev->enabled = !result;
-	return result;
-}
-EXPORT_SYMBOL(vlynq_enable_device);
-
-
-void vlynq_disable_device(struct vlynq_device *dev)
-{
-	struct plat_vlynq_ops *ops = dev->dev.platform_data;
-
-	dev->enabled = 0;
-	free_irq(dev->irq, dev);
-	ops->off(dev);
-}
-EXPORT_SYMBOL(vlynq_disable_device);
-
-int vlynq_set_local_mapping(struct vlynq_device *dev, u32 tx_offset,
-			    struct vlynq_mapping *mapping)
-{
-	int i;
-
-	if (!dev->enabled)
-		return -ENXIO;
-
-	writel(tx_offset, &dev->local->tx_offset);
-	for (i = 0; i < 4; i++) {
-		writel(mapping[i].offset, &dev->local->rx_mapping[i].offset);
-		writel(mapping[i].size, &dev->local->rx_mapping[i].size);
-	}
-	return 0;
-}
-EXPORT_SYMBOL(vlynq_set_local_mapping);
-
-int vlynq_set_remote_mapping(struct vlynq_device *dev, u32 tx_offset,
-			     struct vlynq_mapping *mapping)
-{
-	int i;
-
-	if (!dev->enabled)
-		return -ENXIO;
-
-	writel(tx_offset, &dev->remote->tx_offset);
-	for (i = 0; i < 4; i++) {
-		writel(mapping[i].offset, &dev->remote->rx_mapping[i].offset);
-		writel(mapping[i].size, &dev->remote->rx_mapping[i].size);
-	}
-	return 0;
-}
-EXPORT_SYMBOL(vlynq_set_remote_mapping);
-
-int vlynq_set_local_irq(struct vlynq_device *dev, int virq)
-{
-	int irq = dev->irq_start + virq;
-	if (dev->enabled)
-		return -EBUSY;
-
-	if ((irq < dev->irq_start) || (irq > dev->irq_end))
-		return -EINVAL;
-
-	if (virq == dev->remote_irq)
-		return -EINVAL;
-
-	dev->local_irq = virq;
-
-	return 0;
-}
-EXPORT_SYMBOL(vlynq_set_local_irq);
-
-int vlynq_set_remote_irq(struct vlynq_device *dev, int virq)
-{
-	int irq = dev->irq_start + virq;
-	if (dev->enabled)
-		return -EBUSY;
-
-	if ((irq < dev->irq_start) || (irq > dev->irq_end))
-		return -EINVAL;
-
-	if (virq == dev->local_irq)
-		return -EINVAL;
-
-	dev->remote_irq = virq;
-
-	return 0;
-}
-EXPORT_SYMBOL(vlynq_set_remote_irq);
-
-static int vlynq_probe(struct platform_device *pdev)
-{
-	struct vlynq_device *dev;
-	struct resource *regs_res, *mem_res, *irq_res;
-	int len, result;
-
-	regs_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
-	if (!regs_res)
-		return -ENODEV;
-
-	mem_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mem");
-	if (!mem_res)
-		return -ENODEV;
-
-	irq_res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "devirq");
-	if (!irq_res)
-		return -ENODEV;
-
-	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-	if (!dev) {
-		printk(KERN_ERR
-		       "vlynq: failed to allocate device structure\n");
-		return -ENOMEM;
-	}
-
-	dev->id = pdev->id;
-	dev->dev.bus = &vlynq_bus_type;
-	dev->dev.parent = &pdev->dev;
-	dev_set_name(&dev->dev, "vlynq%d", dev->id);
-	dev->dev.platform_data = pdev->dev.platform_data;
-	dev->dev.release = vlynq_device_release;
-
-	dev->regs_start = regs_res->start;
-	dev->regs_end = regs_res->end;
-	dev->mem_start = mem_res->start;
-	dev->mem_end = mem_res->end;
-
-	len = resource_size(regs_res);
-	if (!request_mem_region(regs_res->start, len, dev_name(&dev->dev))) {
-		printk(KERN_ERR "%s: Can't request vlynq registers\n",
-		       dev_name(&dev->dev));
-		result = -ENXIO;
-		goto fail_request;
-	}
-
-	dev->local = ioremap(regs_res->start, len);
-	if (!dev->local) {
-		printk(KERN_ERR "%s: Can't remap vlynq registers\n",
-		       dev_name(&dev->dev));
-		result = -ENXIO;
-		goto fail_remap;
-	}
-
-	dev->remote = (struct vlynq_regs *)((void *)dev->local +
-					    VLYNQ_REMOTE_OFFSET);
-
-	dev->irq = platform_get_irq_byname(pdev, "irq");
-	dev->irq_start = irq_res->start;
-	dev->irq_end = irq_res->end;
-	dev->local_irq = dev->irq_end - dev->irq_start;
-	dev->remote_irq = dev->local_irq - 1;
-
-	if (device_register(&dev->dev))
-		goto fail_register;
-	platform_set_drvdata(pdev, dev);
-
-	printk(KERN_INFO "%s: regs 0x%p, irq %d, mem 0x%p\n",
-	       dev_name(&dev->dev), (void *)dev->regs_start, dev->irq,
-	       (void *)dev->mem_start);
-
-	dev->dev_id = 0;
-	dev->divisor = vlynq_div_auto;
-	result = __vlynq_enable_device(dev);
-	if (result == 0) {
-		dev->dev_id = readl(&dev->remote->chip);
-		((struct plat_vlynq_ops *)(dev->dev.platform_data))->off(dev);
-	}
-	if (dev->dev_id)
-		printk(KERN_INFO "Found a VLYNQ device: %08x\n", dev->dev_id);
-
-	return 0;
-
-fail_register:
-	iounmap(dev->local);
-fail_remap:
-fail_request:
-	release_mem_region(regs_res->start, len);
-	kfree(dev);
-	return result;
-}
-
-static int vlynq_remove(struct platform_device *pdev)
-{
-	struct vlynq_device *dev = platform_get_drvdata(pdev);
-
-	device_unregister(&dev->dev);
-	iounmap(dev->local);
-	release_mem_region(dev->regs_start,
-			   dev->regs_end - dev->regs_start + 1);
-
-	kfree(dev);
-
-	return 0;
-}
-
-static struct platform_driver vlynq_platform_driver = {
-	.driver.name = "vlynq",
-	.probe = vlynq_probe,
-	.remove = vlynq_remove,
-};
-
-struct bus_type vlynq_bus_type = {
-	.name = "vlynq",
-	.match = vlynq_device_match,
-	.probe = vlynq_device_probe,
-	.remove = vlynq_device_remove,
-};
-EXPORT_SYMBOL(vlynq_bus_type);
-
-static int vlynq_init(void)
-{
-	int res = 0;
-
-	res = bus_register(&vlynq_bus_type);
-	if (res)
-		goto fail_bus;
-
-	res = platform_driver_register(&vlynq_platform_driver);
-	if (res)
-		goto fail_platform;
-
-	return 0;
-
-fail_platform:
-	bus_unregister(&vlynq_bus_type);
-fail_bus:
-	return res;
-}
-
-static void vlynq_exit(void)
-{
-	platform_driver_unregister(&vlynq_platform_driver);
-	bus_unregister(&vlynq_bus_type);
-}
-
-module_init(vlynq_init);
-module_exit(vlynq_exit);