| /* |
| * linux/drivers/mfd/ucb1x00-core.c |
| * |
| * Copyright (C) 2001 Russell King, All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License. |
| * |
| * The UCB1x00 core driver provides basic services for handling IO, |
| * the ADC, interrupts, and accessing registers. It is designed |
| * such that everything goes through this layer, thereby providing |
| * a consistent locking methodology, as well as allowing the drivers |
| * to be used on other non-MCP-enabled hardware platforms. |
| * |
| * Note that all locks are private to this file. Nothing else may |
| * touch them. |
| */ |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/slab.h> |
| #include <linux/init.h> |
| #include <linux/errno.h> |
| #include <linux/interrupt.h> |
| #include <linux/device.h> |
| #include <linux/mutex.h> |
| |
| #include <asm/dma.h> |
| #include <asm/hardware.h> |
| |
| #include "ucb1x00.h" |
| |
| static DEFINE_MUTEX(ucb1x00_mutex); |
| static LIST_HEAD(ucb1x00_drivers); |
| static LIST_HEAD(ucb1x00_devices); |
| |
| /** |
| * ucb1x00_io_set_dir - set IO direction |
| * @ucb: UCB1x00 structure describing chip |
| * @in: bitfield of IO pins to be set as inputs |
| * @out: bitfield of IO pins to be set as outputs |
| * |
| * Set the IO direction of the ten general purpose IO pins on |
| * the UCB1x00 chip. The @in bitfield has priority over the |
| * @out bitfield, in that if you specify a pin as both input |
| * and output, it will end up as an input. |
| * |
| * ucb1x00_enable must have been called to enable the comms |
| * before using this function. |
| * |
| * This function takes a spinlock, disabling interrupts. |
| */ |
| void ucb1x00_io_set_dir(struct ucb1x00 *ucb, unsigned int in, unsigned int out) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ucb->io_lock, flags); |
| ucb->io_dir |= out; |
| ucb->io_dir &= ~in; |
| |
| ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir); |
| spin_unlock_irqrestore(&ucb->io_lock, flags); |
| } |
| |
| /** |
| * ucb1x00_io_write - set or clear IO outputs |
| * @ucb: UCB1x00 structure describing chip |
| * @set: bitfield of IO pins to set to logic '1' |
| * @clear: bitfield of IO pins to set to logic '0' |
| * |
| * Set the IO output state of the specified IO pins. The value |
| * is retained if the pins are subsequently configured as inputs. |
| * The @clear bitfield has priority over the @set bitfield - |
| * outputs will be cleared. |
| * |
| * ucb1x00_enable must have been called to enable the comms |
| * before using this function. |
| * |
| * This function takes a spinlock, disabling interrupts. |
| */ |
| void ucb1x00_io_write(struct ucb1x00 *ucb, unsigned int set, unsigned int clear) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ucb->io_lock, flags); |
| ucb->io_out |= set; |
| ucb->io_out &= ~clear; |
| |
| ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out); |
| spin_unlock_irqrestore(&ucb->io_lock, flags); |
| } |
| |
| /** |
| * ucb1x00_io_read - read the current state of the IO pins |
| * @ucb: UCB1x00 structure describing chip |
| * |
| * Return a bitfield describing the logic state of the ten |
| * general purpose IO pins. |
| * |
| * ucb1x00_enable must have been called to enable the comms |
| * before using this function. |
| * |
| * This function does not take any semaphores or spinlocks. |
| */ |
| unsigned int ucb1x00_io_read(struct ucb1x00 *ucb) |
| { |
| return ucb1x00_reg_read(ucb, UCB_IO_DATA); |
| } |
| |
| /* |
| * UCB1300 data sheet says we must: |
| * 1. enable ADC => 5us (including reference startup time) |
| * 2. select input => 51*tsibclk => 4.3us |
| * 3. start conversion => 102*tsibclk => 8.5us |
| * (tsibclk = 1/11981000) |
| * Period between SIB 128-bit frames = 10.7us |
| */ |
| |
| /** |
| * ucb1x00_adc_enable - enable the ADC converter |
| * @ucb: UCB1x00 structure describing chip |
| * |
| * Enable the ucb1x00 and ADC converter on the UCB1x00 for use. |
| * Any code wishing to use the ADC converter must call this |
| * function prior to using it. |
| * |
| * This function takes the ADC semaphore to prevent two or more |
| * concurrent uses, and therefore may sleep. As a result, it |
| * can only be called from process context, not interrupt |
| * context. |
| * |
| * You should release the ADC as soon as possible using |
| * ucb1x00_adc_disable. |
| */ |
| void ucb1x00_adc_enable(struct ucb1x00 *ucb) |
| { |
| down(&ucb->adc_sem); |
| |
| ucb->adc_cr |= UCB_ADC_ENA; |
| |
| ucb1x00_enable(ucb); |
| ucb1x00_reg_write(ucb, UCB_ADC_CR, ucb->adc_cr); |
| } |
| |
| /** |
| * ucb1x00_adc_read - read the specified ADC channel |
| * @ucb: UCB1x00 structure describing chip |
| * @adc_channel: ADC channel mask |
| * @sync: wait for syncronisation pulse. |
| * |
| * Start an ADC conversion and wait for the result. Note that |
| * synchronised ADC conversions (via the ADCSYNC pin) must wait |
| * until the trigger is asserted and the conversion is finished. |
| * |
| * This function currently spins waiting for the conversion to |
| * complete (2 frames max without sync). |
| * |
| * If called for a synchronised ADC conversion, it may sleep |
| * with the ADC semaphore held. |
| */ |
| unsigned int ucb1x00_adc_read(struct ucb1x00 *ucb, int adc_channel, int sync) |
| { |
| unsigned int val; |
| |
| if (sync) |
| adc_channel |= UCB_ADC_SYNC_ENA; |
| |
| ucb1x00_reg_write(ucb, UCB_ADC_CR, ucb->adc_cr | adc_channel); |
| ucb1x00_reg_write(ucb, UCB_ADC_CR, ucb->adc_cr | adc_channel | UCB_ADC_START); |
| |
| for (;;) { |
| val = ucb1x00_reg_read(ucb, UCB_ADC_DATA); |
| if (val & UCB_ADC_DAT_VAL) |
| break; |
| /* yield to other processes */ |
| set_current_state(TASK_INTERRUPTIBLE); |
| schedule_timeout(1); |
| } |
| |
| return UCB_ADC_DAT(val); |
| } |
| |
| /** |
| * ucb1x00_adc_disable - disable the ADC converter |
| * @ucb: UCB1x00 structure describing chip |
| * |
| * Disable the ADC converter and release the ADC semaphore. |
| */ |
| void ucb1x00_adc_disable(struct ucb1x00 *ucb) |
| { |
| ucb->adc_cr &= ~UCB_ADC_ENA; |
| ucb1x00_reg_write(ucb, UCB_ADC_CR, ucb->adc_cr); |
| ucb1x00_disable(ucb); |
| |
| up(&ucb->adc_sem); |
| } |
| |
| /* |
| * UCB1x00 Interrupt handling. |
| * |
| * The UCB1x00 can generate interrupts when the SIBCLK is stopped. |
| * Since we need to read an internal register, we must re-enable |
| * SIBCLK to talk to the chip. We leave the clock running until |
| * we have finished processing all interrupts from the chip. |
| */ |
| static irqreturn_t ucb1x00_irq(int irqnr, void *devid, struct pt_regs *regs) |
| { |
| struct ucb1x00 *ucb = devid; |
| struct ucb1x00_irq *irq; |
| unsigned int isr, i; |
| |
| ucb1x00_enable(ucb); |
| isr = ucb1x00_reg_read(ucb, UCB_IE_STATUS); |
| ucb1x00_reg_write(ucb, UCB_IE_CLEAR, isr); |
| ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0); |
| |
| for (i = 0, irq = ucb->irq_handler; i < 16 && isr; i++, isr >>= 1, irq++) |
| if (isr & 1 && irq->fn) |
| irq->fn(i, irq->devid); |
| ucb1x00_disable(ucb); |
| |
| return IRQ_HANDLED; |
| } |
| |
| /** |
| * ucb1x00_hook_irq - hook a UCB1x00 interrupt |
| * @ucb: UCB1x00 structure describing chip |
| * @idx: interrupt index |
| * @fn: function to call when interrupt is triggered |
| * @devid: device id to pass to interrupt handler |
| * |
| * Hook the specified interrupt. You can only register one handler |
| * for each interrupt source. The interrupt source is not enabled |
| * by this function; use ucb1x00_enable_irq instead. |
| * |
| * Interrupt handlers will be called with other interrupts enabled. |
| * |
| * Returns zero on success, or one of the following errors: |
| * -EINVAL if the interrupt index is invalid |
| * -EBUSY if the interrupt has already been hooked |
| */ |
| int ucb1x00_hook_irq(struct ucb1x00 *ucb, unsigned int idx, void (*fn)(int, void *), void *devid) |
| { |
| struct ucb1x00_irq *irq; |
| int ret = -EINVAL; |
| |
| if (idx < 16) { |
| irq = ucb->irq_handler + idx; |
| ret = -EBUSY; |
| |
| spin_lock_irq(&ucb->lock); |
| if (irq->fn == NULL) { |
| irq->devid = devid; |
| irq->fn = fn; |
| ret = 0; |
| } |
| spin_unlock_irq(&ucb->lock); |
| } |
| return ret; |
| } |
| |
| /** |
| * ucb1x00_enable_irq - enable an UCB1x00 interrupt source |
| * @ucb: UCB1x00 structure describing chip |
| * @idx: interrupt index |
| * @edges: interrupt edges to enable |
| * |
| * Enable the specified interrupt to trigger on %UCB_RISING, |
| * %UCB_FALLING or both edges. The interrupt should have been |
| * hooked by ucb1x00_hook_irq. |
| */ |
| void ucb1x00_enable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges) |
| { |
| unsigned long flags; |
| |
| if (idx < 16) { |
| spin_lock_irqsave(&ucb->lock, flags); |
| |
| ucb1x00_enable(ucb); |
| if (edges & UCB_RISING) { |
| ucb->irq_ris_enbl |= 1 << idx; |
| ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl); |
| } |
| if (edges & UCB_FALLING) { |
| ucb->irq_fal_enbl |= 1 << idx; |
| ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl); |
| } |
| ucb1x00_disable(ucb); |
| spin_unlock_irqrestore(&ucb->lock, flags); |
| } |
| } |
| |
| /** |
| * ucb1x00_disable_irq - disable an UCB1x00 interrupt source |
| * @ucb: UCB1x00 structure describing chip |
| * @edges: interrupt edges to disable |
| * |
| * Disable the specified interrupt triggering on the specified |
| * (%UCB_RISING, %UCB_FALLING or both) edges. |
| */ |
| void ucb1x00_disable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges) |
| { |
| unsigned long flags; |
| |
| if (idx < 16) { |
| spin_lock_irqsave(&ucb->lock, flags); |
| |
| ucb1x00_enable(ucb); |
| if (edges & UCB_RISING) { |
| ucb->irq_ris_enbl &= ~(1 << idx); |
| ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl); |
| } |
| if (edges & UCB_FALLING) { |
| ucb->irq_fal_enbl &= ~(1 << idx); |
| ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl); |
| } |
| ucb1x00_disable(ucb); |
| spin_unlock_irqrestore(&ucb->lock, flags); |
| } |
| } |
| |
| /** |
| * ucb1x00_free_irq - disable and free the specified UCB1x00 interrupt |
| * @ucb: UCB1x00 structure describing chip |
| * @idx: interrupt index |
| * @devid: device id. |
| * |
| * Disable the interrupt source and remove the handler. devid must |
| * match the devid passed when hooking the interrupt. |
| * |
| * Returns zero on success, or one of the following errors: |
| * -EINVAL if the interrupt index is invalid |
| * -ENOENT if devid does not match |
| */ |
| int ucb1x00_free_irq(struct ucb1x00 *ucb, unsigned int idx, void *devid) |
| { |
| struct ucb1x00_irq *irq; |
| int ret; |
| |
| if (idx >= 16) |
| goto bad; |
| |
| irq = ucb->irq_handler + idx; |
| ret = -ENOENT; |
| |
| spin_lock_irq(&ucb->lock); |
| if (irq->devid == devid) { |
| ucb->irq_ris_enbl &= ~(1 << idx); |
| ucb->irq_fal_enbl &= ~(1 << idx); |
| |
| ucb1x00_enable(ucb); |
| ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl); |
| ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl); |
| ucb1x00_disable(ucb); |
| |
| irq->fn = NULL; |
| irq->devid = NULL; |
| ret = 0; |
| } |
| spin_unlock_irq(&ucb->lock); |
| return ret; |
| |
| bad: |
| printk(KERN_ERR "Freeing bad UCB1x00 irq %d\n", idx); |
| return -EINVAL; |
| } |
| |
| static int ucb1x00_add_dev(struct ucb1x00 *ucb, struct ucb1x00_driver *drv) |
| { |
| struct ucb1x00_dev *dev; |
| int ret = -ENOMEM; |
| |
| dev = kmalloc(sizeof(struct ucb1x00_dev), GFP_KERNEL); |
| if (dev) { |
| dev->ucb = ucb; |
| dev->drv = drv; |
| |
| ret = drv->add(dev); |
| |
| if (ret == 0) { |
| list_add(&dev->dev_node, &ucb->devs); |
| list_add(&dev->drv_node, &drv->devs); |
| } else { |
| kfree(dev); |
| } |
| } |
| return ret; |
| } |
| |
| static void ucb1x00_remove_dev(struct ucb1x00_dev *dev) |
| { |
| dev->drv->remove(dev); |
| list_del(&dev->dev_node); |
| list_del(&dev->drv_node); |
| kfree(dev); |
| } |
| |
| /* |
| * Try to probe our interrupt, rather than relying on lots of |
| * hard-coded machine dependencies. For reference, the expected |
| * IRQ mappings are: |
| * |
| * Machine Default IRQ |
| * adsbitsy IRQ_GPCIN4 |
| * cerf IRQ_GPIO_UCB1200_IRQ |
| * flexanet IRQ_GPIO_GUI |
| * freebird IRQ_GPIO_FREEBIRD_UCB1300_IRQ |
| * graphicsclient ADS_EXT_IRQ(8) |
| * graphicsmaster ADS_EXT_IRQ(8) |
| * lart LART_IRQ_UCB1200 |
| * omnimeter IRQ_GPIO23 |
| * pfs168 IRQ_GPIO_UCB1300_IRQ |
| * simpad IRQ_GPIO_UCB1300_IRQ |
| * shannon SHANNON_IRQ_GPIO_IRQ_CODEC |
| * yopy IRQ_GPIO_UCB1200_IRQ |
| */ |
| static int ucb1x00_detect_irq(struct ucb1x00 *ucb) |
| { |
| unsigned long mask; |
| |
| mask = probe_irq_on(); |
| if (!mask) { |
| probe_irq_off(mask); |
| return NO_IRQ; |
| } |
| |
| /* |
| * Enable the ADC interrupt. |
| */ |
| ucb1x00_reg_write(ucb, UCB_IE_RIS, UCB_IE_ADC); |
| ucb1x00_reg_write(ucb, UCB_IE_FAL, UCB_IE_ADC); |
| ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0xffff); |
| ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0); |
| |
| /* |
| * Cause an ADC interrupt. |
| */ |
| ucb1x00_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA); |
| ucb1x00_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START); |
| |
| /* |
| * Wait for the conversion to complete. |
| */ |
| while ((ucb1x00_reg_read(ucb, UCB_ADC_DATA) & UCB_ADC_DAT_VAL) == 0); |
| ucb1x00_reg_write(ucb, UCB_ADC_CR, 0); |
| |
| /* |
| * Disable and clear interrupt. |
| */ |
| ucb1x00_reg_write(ucb, UCB_IE_RIS, 0); |
| ucb1x00_reg_write(ucb, UCB_IE_FAL, 0); |
| ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0xffff); |
| ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0); |
| |
| /* |
| * Read triggered interrupt. |
| */ |
| return probe_irq_off(mask); |
| } |
| |
| static void ucb1x00_release(struct class_device *dev) |
| { |
| struct ucb1x00 *ucb = classdev_to_ucb1x00(dev); |
| kfree(ucb); |
| } |
| |
| static struct class ucb1x00_class = { |
| .name = "ucb1x00", |
| .release = ucb1x00_release, |
| }; |
| |
| static int ucb1x00_probe(struct mcp *mcp) |
| { |
| struct ucb1x00 *ucb; |
| struct ucb1x00_driver *drv; |
| unsigned int id; |
| int ret = -ENODEV; |
| |
| mcp_enable(mcp); |
| id = mcp_reg_read(mcp, UCB_ID); |
| |
| if (id != UCB_ID_1200 && id != UCB_ID_1300) { |
| printk(KERN_WARNING "UCB1x00 ID not found: %04x\n", id); |
| goto err_disable; |
| } |
| |
| ucb = kmalloc(sizeof(struct ucb1x00), GFP_KERNEL); |
| ret = -ENOMEM; |
| if (!ucb) |
| goto err_disable; |
| |
| memset(ucb, 0, sizeof(struct ucb1x00)); |
| |
| ucb->cdev.class = &ucb1x00_class; |
| ucb->cdev.dev = &mcp->attached_device; |
| strlcpy(ucb->cdev.class_id, "ucb1x00", sizeof(ucb->cdev.class_id)); |
| |
| spin_lock_init(&ucb->lock); |
| spin_lock_init(&ucb->io_lock); |
| sema_init(&ucb->adc_sem, 1); |
| |
| ucb->id = id; |
| ucb->mcp = mcp; |
| ucb->irq = ucb1x00_detect_irq(ucb); |
| if (ucb->irq == NO_IRQ) { |
| printk(KERN_ERR "UCB1x00: IRQ probe failed\n"); |
| ret = -ENODEV; |
| goto err_free; |
| } |
| |
| ret = request_irq(ucb->irq, ucb1x00_irq, SA_TRIGGER_RISING, |
| "UCB1x00", ucb); |
| if (ret) { |
| printk(KERN_ERR "ucb1x00: unable to grab irq%d: %d\n", |
| ucb->irq, ret); |
| goto err_free; |
| } |
| |
| mcp_set_drvdata(mcp, ucb); |
| |
| ret = class_device_register(&ucb->cdev); |
| if (ret) |
| goto err_irq; |
| |
| INIT_LIST_HEAD(&ucb->devs); |
| mutex_lock(&ucb1x00_mutex); |
| list_add(&ucb->node, &ucb1x00_devices); |
| list_for_each_entry(drv, &ucb1x00_drivers, node) { |
| ucb1x00_add_dev(ucb, drv); |
| } |
| mutex_unlock(&ucb1x00_mutex); |
| goto out; |
| |
| err_irq: |
| free_irq(ucb->irq, ucb); |
| err_free: |
| kfree(ucb); |
| err_disable: |
| mcp_disable(mcp); |
| out: |
| return ret; |
| } |
| |
| static void ucb1x00_remove(struct mcp *mcp) |
| { |
| struct ucb1x00 *ucb = mcp_get_drvdata(mcp); |
| struct list_head *l, *n; |
| |
| mutex_lock(&ucb1x00_mutex); |
| list_del(&ucb->node); |
| list_for_each_safe(l, n, &ucb->devs) { |
| struct ucb1x00_dev *dev = list_entry(l, struct ucb1x00_dev, dev_node); |
| ucb1x00_remove_dev(dev); |
| } |
| mutex_unlock(&ucb1x00_mutex); |
| |
| free_irq(ucb->irq, ucb); |
| class_device_unregister(&ucb->cdev); |
| } |
| |
| int ucb1x00_register_driver(struct ucb1x00_driver *drv) |
| { |
| struct ucb1x00 *ucb; |
| |
| INIT_LIST_HEAD(&drv->devs); |
| mutex_lock(&ucb1x00_mutex); |
| list_add(&drv->node, &ucb1x00_drivers); |
| list_for_each_entry(ucb, &ucb1x00_devices, node) { |
| ucb1x00_add_dev(ucb, drv); |
| } |
| mutex_unlock(&ucb1x00_mutex); |
| return 0; |
| } |
| |
| void ucb1x00_unregister_driver(struct ucb1x00_driver *drv) |
| { |
| struct list_head *n, *l; |
| |
| mutex_lock(&ucb1x00_mutex); |
| list_del(&drv->node); |
| list_for_each_safe(l, n, &drv->devs) { |
| struct ucb1x00_dev *dev = list_entry(l, struct ucb1x00_dev, drv_node); |
| ucb1x00_remove_dev(dev); |
| } |
| mutex_unlock(&ucb1x00_mutex); |
| } |
| |
| static int ucb1x00_suspend(struct mcp *mcp, pm_message_t state) |
| { |
| struct ucb1x00 *ucb = mcp_get_drvdata(mcp); |
| struct ucb1x00_dev *dev; |
| |
| mutex_lock(&ucb1x00_mutex); |
| list_for_each_entry(dev, &ucb->devs, dev_node) { |
| if (dev->drv->suspend) |
| dev->drv->suspend(dev, state); |
| } |
| mutex_unlock(&ucb1x00_mutex); |
| return 0; |
| } |
| |
| static int ucb1x00_resume(struct mcp *mcp) |
| { |
| struct ucb1x00 *ucb = mcp_get_drvdata(mcp); |
| struct ucb1x00_dev *dev; |
| |
| mutex_lock(&ucb1x00_mutex); |
| list_for_each_entry(dev, &ucb->devs, dev_node) { |
| if (dev->drv->resume) |
| dev->drv->resume(dev); |
| } |
| mutex_unlock(&ucb1x00_mutex); |
| return 0; |
| } |
| |
| static struct mcp_driver ucb1x00_driver = { |
| .drv = { |
| .name = "ucb1x00", |
| }, |
| .probe = ucb1x00_probe, |
| .remove = ucb1x00_remove, |
| .suspend = ucb1x00_suspend, |
| .resume = ucb1x00_resume, |
| }; |
| |
| static int __init ucb1x00_init(void) |
| { |
| int ret = class_register(&ucb1x00_class); |
| if (ret == 0) { |
| ret = mcp_driver_register(&ucb1x00_driver); |
| if (ret) |
| class_unregister(&ucb1x00_class); |
| } |
| return ret; |
| } |
| |
| static void __exit ucb1x00_exit(void) |
| { |
| mcp_driver_unregister(&ucb1x00_driver); |
| class_unregister(&ucb1x00_class); |
| } |
| |
| module_init(ucb1x00_init); |
| module_exit(ucb1x00_exit); |
| |
| EXPORT_SYMBOL(ucb1x00_io_set_dir); |
| EXPORT_SYMBOL(ucb1x00_io_write); |
| EXPORT_SYMBOL(ucb1x00_io_read); |
| |
| EXPORT_SYMBOL(ucb1x00_adc_enable); |
| EXPORT_SYMBOL(ucb1x00_adc_read); |
| EXPORT_SYMBOL(ucb1x00_adc_disable); |
| |
| EXPORT_SYMBOL(ucb1x00_hook_irq); |
| EXPORT_SYMBOL(ucb1x00_free_irq); |
| EXPORT_SYMBOL(ucb1x00_enable_irq); |
| EXPORT_SYMBOL(ucb1x00_disable_irq); |
| |
| EXPORT_SYMBOL(ucb1x00_register_driver); |
| EXPORT_SYMBOL(ucb1x00_unregister_driver); |
| |
| MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>"); |
| MODULE_DESCRIPTION("UCB1x00 core driver"); |
| MODULE_LICENSE("GPL"); |