mirror of https://gitee.com/openkylin/linux.git
i2c-ibm_iic: Remove deprecated OCP style part
The deprecated OCP style driver part is used by the "old" arch/ppc platform. This platform is scheduled for removal in June/July this year. This patch now removes the OCP driver part from the IBM I2C driver. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Stefan Roese
Jean Delvare
parent
e0457442fd
commit
e6c3de6c14
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@ -42,13 +42,7 @@
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#include <asm/io.h>
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#include <linux/i2c.h>
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#include <linux/i2c-id.h>
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#ifdef CONFIG_IBM_OCP
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#include <asm/ocp.h>
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#include <asm/ibm4xx.h>
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#else
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#include <linux/of_platform.h>
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#endif
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#include "i2c-ibm_iic.h"
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@ -665,180 +659,6 @@ static inline u8 iic_clckdiv(unsigned int opb)
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return (u8)((opb + 9) / 10 - 1);
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}
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#ifdef CONFIG_IBM_OCP
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/*
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* Register single IIC interface
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*/
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static int __devinit iic_probe(struct ocp_device *ocp){
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struct ibm_iic_private* dev;
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struct i2c_adapter* adap;
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struct ocp_func_iic_data* iic_data = ocp->def->additions;
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int ret;
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if (!iic_data)
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printk(KERN_WARNING"ibm-iic%d: missing additional data!\n",
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ocp->def->index);
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if (!(dev = kzalloc(sizeof(*dev), GFP_KERNEL))) {
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printk(KERN_ERR "ibm-iic%d: failed to allocate device data\n",
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ocp->def->index);
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return -ENOMEM;
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}
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dev->idx = ocp->def->index;
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ocp_set_drvdata(ocp, dev);
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if (!request_mem_region(ocp->def->paddr, sizeof(struct iic_regs),
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"ibm_iic")) {
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ret = -EBUSY;
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goto fail1;
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}
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if (!(dev->vaddr = ioremap(ocp->def->paddr, sizeof(struct iic_regs)))){
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printk(KERN_ERR "ibm-iic%d: failed to ioremap device registers\n",
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dev->idx);
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ret = -ENXIO;
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goto fail2;
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}
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init_waitqueue_head(&dev->wq);
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dev->irq = iic_force_poll ? -1 : ocp->def->irq;
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if (dev->irq >= 0){
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/* Disable interrupts until we finish initialization,
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assumes level-sensitive IRQ setup...
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*/
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iic_interrupt_mode(dev, 0);
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if (request_irq(dev->irq, iic_handler, 0, "IBM IIC", dev)){
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printk(KERN_ERR "ibm-iic%d: request_irq %d failed\n",
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dev->idx, dev->irq);
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/* Fallback to the polling mode */
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dev->irq = -1;
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}
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}
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if (dev->irq < 0)
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printk(KERN_WARNING "ibm-iic%d: using polling mode\n",
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dev->idx);
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/* Board specific settings */
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dev->fast_mode = iic_force_fast ? 1 : (iic_data ? iic_data->fast_mode : 0);
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/* clckdiv is the same for *all* IIC interfaces,
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* but I'd rather make a copy than introduce another global. --ebs
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*/
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dev->clckdiv = iic_clckdiv(ocp_sys_info.opb_bus_freq);
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DBG("%d: clckdiv = %d\n", dev->idx, dev->clckdiv);
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/* Initialize IIC interface */
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iic_dev_init(dev);
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/* Register it with i2c layer */
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adap = &dev->adap;
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adap->dev.parent = &ocp->dev;
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strcpy(adap->name, "IBM IIC");
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i2c_set_adapdata(adap, dev);
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adap->id = I2C_HW_OCP;
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adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
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adap->algo = &iic_algo;
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adap->client_register = NULL;
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adap->client_unregister = NULL;
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adap->timeout = 1;
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/*
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* If "dev->idx" is negative we consider it as zero.
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* The reason to do so is to avoid sysfs names that only make
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* sense when there are multiple adapters.
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*/
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adap->nr = dev->idx >= 0 ? dev->idx : 0;
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if ((ret = i2c_add_numbered_adapter(adap)) < 0) {
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printk(KERN_ERR "ibm-iic%d: failed to register i2c adapter\n",
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dev->idx);
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goto fail;
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}
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printk(KERN_INFO "ibm-iic%d: using %s mode\n", dev->idx,
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dev->fast_mode ? "fast (400 kHz)" : "standard (100 kHz)");
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return 0;
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fail:
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if (dev->irq >= 0){
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iic_interrupt_mode(dev, 0);
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free_irq(dev->irq, dev);
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}
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iounmap(dev->vaddr);
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fail2:
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release_mem_region(ocp->def->paddr, sizeof(struct iic_regs));
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fail1:
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ocp_set_drvdata(ocp, NULL);
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kfree(dev);
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return ret;
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}
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/*
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* Cleanup initialized IIC interface
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*/
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static void __devexit iic_remove(struct ocp_device *ocp)
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{
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struct ibm_iic_private* dev = (struct ibm_iic_private*)ocp_get_drvdata(ocp);
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BUG_ON(dev == NULL);
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if (i2c_del_adapter(&dev->adap)){
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printk(KERN_ERR "ibm-iic%d: failed to delete i2c adapter :(\n",
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dev->idx);
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/* That's *very* bad, just shutdown IRQ ... */
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if (dev->irq >= 0){
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iic_interrupt_mode(dev, 0);
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free_irq(dev->irq, dev);
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dev->irq = -1;
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}
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} else {
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if (dev->irq >= 0){
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iic_interrupt_mode(dev, 0);
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free_irq(dev->irq, dev);
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}
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iounmap(dev->vaddr);
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release_mem_region(ocp->def->paddr, sizeof(struct iic_regs));
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kfree(dev);
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}
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}
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static struct ocp_device_id ibm_iic_ids[] __devinitdata =
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{
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{ .vendor = OCP_VENDOR_IBM, .function = OCP_FUNC_IIC },
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{ .vendor = OCP_VENDOR_INVALID }
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};
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MODULE_DEVICE_TABLE(ocp, ibm_iic_ids);
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static struct ocp_driver ibm_iic_driver =
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{
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.name = "iic",
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.id_table = ibm_iic_ids,
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.probe = iic_probe,
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.remove = __devexit_p(iic_remove),
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#if defined(CONFIG_PM)
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.suspend = NULL,
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.resume = NULL,
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#endif
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};
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static int __init iic_init(void)
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{
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printk(KERN_INFO "IBM IIC driver v" DRIVER_VERSION "\n");
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return ocp_register_driver(&ibm_iic_driver);
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}
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static void __exit iic_exit(void)
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{
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ocp_unregister_driver(&ibm_iic_driver);
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}
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#else /* !CONFIG_IBM_OCP */
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static int __devinit iic_request_irq(struct of_device *ofdev,
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struct ibm_iic_private *dev)
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{
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@ -1011,7 +831,6 @@ static void __exit iic_exit(void)
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{
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of_unregister_platform_driver(&ibm_iic_driver);
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}
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#endif /* CONFIG_IBM_OCP */
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module_init(iic_init);
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module_exit(iic_exit);
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