diff options
Diffstat (limited to 'drivers/i2c/busses')
| -rw-r--r-- | drivers/i2c/busses/i2c-ibm_iic.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c index 6f7bfdec3c6..d8a19c11056 100644 --- a/drivers/i2c/busses/i2c-ibm_iic.c +++ b/drivers/i2c/busses/i2c-ibm_iic.c @@ -42,13 +42,7 @@ #include <asm/io.h> #include <linux/i2c.h> #include <linux/i2c-id.h> - -#ifdef CONFIG_IBM_OCP -#include <asm/ocp.h> -#include <asm/ibm4xx.h> -#else #include <linux/of_platform.h> -#endif #include "i2c-ibm_iic.h" @@ -665,180 +659,6 @@ static inline u8 iic_clckdiv(unsigned int opb) return (u8)((opb + 9) / 10 - 1); } -#ifdef CONFIG_IBM_OCP -/* - * Register single IIC interface - */ -static int __devinit iic_probe(struct ocp_device *ocp){ - - struct ibm_iic_private* dev; - struct i2c_adapter* adap; - struct ocp_func_iic_data* iic_data = ocp->def->additions; - int ret; - - if (!iic_data) - printk(KERN_WARNING"ibm-iic%d: missing additional data!\n", - ocp->def->index); - - if (!(dev = kzalloc(sizeof(*dev), GFP_KERNEL))) { - printk(KERN_ERR "ibm-iic%d: failed to allocate device data\n", - ocp->def->index); - return -ENOMEM; - } - - dev->idx = ocp->def->index; - ocp_set_drvdata(ocp, dev); - - if (!request_mem_region(ocp->def->paddr, sizeof(struct iic_regs), - "ibm_iic")) { - ret = -EBUSY; - goto fail1; - } - - if (!(dev->vaddr = ioremap(ocp->def->paddr, sizeof(struct iic_regs)))){ - printk(KERN_ERR "ibm-iic%d: failed to ioremap device registers\n", - dev->idx); - ret = -ENXIO; - goto fail2; - } - - init_waitqueue_head(&dev->wq); - - dev->irq = iic_force_poll ? -1 : ocp->def->irq; - if (dev->irq >= 0){ - /* Disable interrupts until we finish initialization, - assumes level-sensitive IRQ setup... - */ - iic_interrupt_mode(dev, 0); - if (request_irq(dev->irq, iic_handler, 0, "IBM IIC", dev)){ - printk(KERN_ERR "ibm-iic%d: request_irq %d failed\n", - dev->idx, dev->irq); - /* Fallback to the polling mode */ - dev->irq = -1; - } - } - - if (dev->irq < 0) - printk(KERN_WARNING "ibm-iic%d: using polling mode\n", - dev->idx); - - /* Board specific settings */ - dev->fast_mode = iic_force_fast ? 1 : (iic_data ? iic_data->fast_mode : 0); - - /* clckdiv is the same for *all* IIC interfaces, - * but I'd rather make a copy than introduce another global. --ebs - */ - dev->clckdiv = iic_clckdiv(ocp_sys_info.opb_bus_freq); - DBG("%d: clckdiv = %d\n", dev->idx, dev->clckdiv); - - /* Initialize IIC interface */ - iic_dev_init(dev); - - /* Register it with i2c layer */ - adap = &dev->adap; - adap->dev.parent = &ocp->dev; - strcpy(adap->name, "IBM IIC"); - i2c_set_adapdata(adap, dev); - adap->id = I2C_HW_OCP; - adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD; - adap->algo = &iic_algo; - adap->client_register = NULL; - adap->client_unregister = NULL; - adap->timeout = 1; - - /* - * If "dev->idx" is negative we consider it as zero. - * The reason to do so is to avoid sysfs names that only make - * sense when there are multiple adapters. - */ - adap->nr = dev->idx >= 0 ? dev->idx : 0; - - if ((ret = i2c_add_numbered_adapter(adap)) < 0) { - printk(KERN_ERR "ibm-iic%d: failed to register i2c adapter\n", - dev->idx); - goto fail; - } - - printk(KERN_INFO "ibm-iic%d: using %s mode\n", dev->idx, - dev->fast_mode ? "fast (400 kHz)" : "standard (100 kHz)"); - - return 0; - -fail: - if (dev->irq >= 0){ - iic_interrupt_mode(dev, 0); - free_irq(dev->irq, dev); - } - - iounmap(dev->vaddr); -fail2: - release_mem_region(ocp->def->paddr, sizeof(struct iic_regs)); -fail1: - ocp_set_drvdata(ocp, NULL); - kfree(dev); - return ret; -} - -/* - * Cleanup initialized IIC interface - */ -static void __devexit iic_remove(struct ocp_device *ocp) -{ - struct ibm_iic_private* dev = (struct ibm_iic_private*)ocp_get_drvdata(ocp); - BUG_ON(dev == NULL); - if (i2c_del_adapter(&dev->adap)){ - printk(KERN_ERR "ibm-iic%d: failed to delete i2c adapter :(\n", - dev->idx); - /* That's *very* bad, just shutdown IRQ ... */ - if (dev->irq >= 0){ - iic_interrupt_mode(dev, 0); - free_irq(dev->irq, dev); - dev->irq = -1; - } - } else { - if (dev->irq >= 0){ - iic_interrupt_mode(dev, 0); - free_irq(dev->irq, dev); - } - iounmap(dev->vaddr); - release_mem_region(ocp->def->paddr, sizeof(struct iic_regs)); - kfree(dev); - } -} - -static struct ocp_device_id ibm_iic_ids[] __devinitdata = -{ - { .vendor = OCP_VENDOR_IBM, .function = OCP_FUNC_IIC }, - { .vendor = OCP_VENDOR_INVALID } -}; - -MODULE_DEVICE_TABLE(ocp, ibm_iic_ids); - -static struct ocp_driver ibm_iic_driver = -{ - .name = "iic", - .id_table = ibm_iic_ids, - .probe = iic_probe, - .remove = __devexit_p(iic_remove), -#if defined(CONFIG_PM) - .suspend = NULL, - .resume = NULL, -#endif -}; - -static int __init iic_init(void) -{ - printk(KERN_INFO "IBM IIC driver v" DRIVER_VERSION "\n"); - return ocp_register_driver(&ibm_iic_driver); -} - -static void __exit iic_exit(void) -{ - ocp_unregister_driver(&ibm_iic_driver); -} - -#else /* !CONFIG_IBM_OCP */ - static int __devinit iic_request_irq(struct of_device *ofdev, struct ibm_iic_private *dev) { @@ -1011,7 +831,6 @@ static void __exit iic_exit(void) { of_unregister_platform_driver(&ibm_iic_driver); } -#endif /* CONFIG_IBM_OCP */ module_init(iic_init); module_exit(iic_exit); |