diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/vlynq/Kconfig | 21 | ||||
| -rw-r--r-- | drivers/vlynq/Makefile | 6 | ||||
| -rw-r--r-- | drivers/vlynq/vlynq.c | 799 |
3 files changed, 0 insertions, 826 deletions
diff --git a/drivers/vlynq/Kconfig b/drivers/vlynq/Kconfig deleted file mode 100644 index e7f9492a0b..0000000000 --- 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 d9ce5b2b5c..0000000000 --- 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 4af6615808..0000000000 --- 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); |