diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/i2c/busses/i2c-pxa-pci.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/i2c/busses/i2c-pxa-pci.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/ANDROID_3.4.5/drivers/i2c/busses/i2c-pxa-pci.c b/ANDROID_3.4.5/drivers/i2c/busses/i2c-pxa-pci.c deleted file mode 100644 index a0581798..00000000 --- a/ANDROID_3.4.5/drivers/i2c/busses/i2c-pxa-pci.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * The CE4100's I2C device is more or less the same one as found on PXA. - * It does not support slave mode, the register slightly moved. This PCI - * device provides three bars, every contains a single I2C controller. - */ -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/platform_device.h> -#include <linux/i2c/pxa-i2c.h> -#include <linux/of.h> -#include <linux/of_device.h> -#include <linux/of_address.h> - -#define CE4100_PCI_I2C_DEVS 3 - -struct ce4100_devices { - struct platform_device *pdev[CE4100_PCI_I2C_DEVS]; -}; - -static struct platform_device *add_i2c_device(struct pci_dev *dev, int bar) -{ - struct platform_device *pdev; - struct i2c_pxa_platform_data pdata; - struct resource res[2]; - struct device_node *child; - static int devnum; - int ret; - - memset(&pdata, 0, sizeof(struct i2c_pxa_platform_data)); - memset(&res, 0, sizeof(res)); - - res[0].flags = IORESOURCE_MEM; - res[0].start = pci_resource_start(dev, bar); - res[0].end = pci_resource_end(dev, bar); - - res[1].flags = IORESOURCE_IRQ; - res[1].start = dev->irq; - res[1].end = dev->irq; - - for_each_child_of_node(dev->dev.of_node, child) { - const void *prop; - struct resource r; - int ret; - - ret = of_address_to_resource(child, 0, &r); - if (ret < 0) - continue; - if (r.start != res[0].start) - continue; - if (r.end != res[0].end) - continue; - if (r.flags != res[0].flags) - continue; - - prop = of_get_property(child, "fast-mode", NULL); - if (prop) - pdata.fast_mode = 1; - - break; - } - - if (!child) { - dev_err(&dev->dev, "failed to match a DT node for bar %d.\n", - bar); - ret = -EINVAL; - goto out; - } - - pdev = platform_device_alloc("ce4100-i2c", devnum); - if (!pdev) { - of_node_put(child); - ret = -ENOMEM; - goto out; - } - pdev->dev.parent = &dev->dev; - pdev->dev.of_node = child; - - ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res)); - if (ret) - goto err; - - ret = platform_device_add_data(pdev, &pdata, sizeof(pdata)); - if (ret) - goto err; - - ret = platform_device_add(pdev); - if (ret) - goto err; - devnum++; - return pdev; -err: - platform_device_put(pdev); -out: - return ERR_PTR(ret); -} - -static int __devinit ce4100_i2c_probe(struct pci_dev *dev, - const struct pci_device_id *ent) -{ - int ret; - int i; - struct ce4100_devices *sds; - - ret = pci_enable_device_mem(dev); - if (ret) - return ret; - - if (!dev->dev.of_node) { - dev_err(&dev->dev, "Missing device tree node.\n"); - return -EINVAL; - } - sds = kzalloc(sizeof(*sds), GFP_KERNEL); - if (!sds) { - ret = -ENOMEM; - goto err_mem; - } - - for (i = 0; i < ARRAY_SIZE(sds->pdev); i++) { - sds->pdev[i] = add_i2c_device(dev, i); - if (IS_ERR(sds->pdev[i])) { - ret = PTR_ERR(sds->pdev[i]); - while (--i >= 0) - platform_device_unregister(sds->pdev[i]); - goto err_dev_add; - } - } - pci_set_drvdata(dev, sds); - return 0; - -err_dev_add: - pci_set_drvdata(dev, NULL); - kfree(sds); -err_mem: - pci_disable_device(dev); - return ret; -} - -static void __devexit ce4100_i2c_remove(struct pci_dev *dev) -{ - struct ce4100_devices *sds; - unsigned int i; - - sds = pci_get_drvdata(dev); - pci_set_drvdata(dev, NULL); - - for (i = 0; i < ARRAY_SIZE(sds->pdev); i++) - platform_device_unregister(sds->pdev[i]); - - pci_disable_device(dev); - kfree(sds); -} - -static DEFINE_PCI_DEVICE_TABLE(ce4100_i2c_devices) = { - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2e68)}, - { }, -}; -MODULE_DEVICE_TABLE(pci, ce4100_i2c_devices); - -static struct pci_driver ce4100_i2c_driver = { - .name = "ce4100_i2c", - .id_table = ce4100_i2c_devices, - .probe = ce4100_i2c_probe, - .remove = __devexit_p(ce4100_i2c_remove), -}; - -static int __init ce4100_i2c_init(void) -{ - return pci_register_driver(&ce4100_i2c_driver); -} -module_init(ce4100_i2c_init); - -static void __exit ce4100_i2c_exit(void) -{ - pci_unregister_driver(&ce4100_i2c_driver); -} -module_exit(ce4100_i2c_exit); - -MODULE_DESCRIPTION("CE4100 PCI-I2C glue code for PXA's driver"); -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Sebastian Andrzej Siewior <bigeasy@linutronix.de>"); |