+++ /dev/null
-// 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);
projects / linux-block.git / commitdiff