forked from luck/tmp_suning_uos_patched
[SERIAL] sunhv: Convert to of_driver layer.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
parent
1815aed5ed
commit
93872ba21d
@ -20,8 +20,8 @@
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#include <asm/hypervisor.h>
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#include <asm/spitfire.h>
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#include <asm/vdev.h>
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#include <asm/oplib.h>
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#include <asm/prom.h>
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#include <asm/of_device.h>
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#include <asm/irq.h>
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#if defined(CONFIG_MAGIC_SYSRQ)
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@ -407,144 +407,120 @@ static inline struct console *SUNHV_CONSOLE(void)
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return &sunhv_console;
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}
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static int __init hv_console_compatible(char *buf, int len)
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{
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while (len) {
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int this_len;
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if (!strcmp(buf, "qcn"))
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return 1;
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this_len = strlen(buf) + 1;
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buf += this_len;
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len -= this_len;
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}
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return 0;
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}
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static unsigned int __init get_interrupt(void)
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{
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struct device_node *dev_node;
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dev_node = sun4v_vdev_root->child;
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while (dev_node != NULL) {
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struct property *prop;
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if (strcmp(dev_node->name, "console"))
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goto next_sibling;
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prop = of_find_property(dev_node, "compatible", NULL);
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if (!prop)
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goto next_sibling;
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if (hv_console_compatible(prop->value, prop->length))
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break;
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next_sibling:
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dev_node = dev_node->sibling;
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}
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if (!dev_node)
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return 0;
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/* Ok, the this is the OBP node for the sun4v hypervisor
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* console device. Decode the interrupt.
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*/
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return sun4v_vdev_device_interrupt(dev_node);
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}
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static int __init sunhv_init(void)
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static int __devinit hv_probe(struct of_device *op, const struct of_device_id *match)
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{
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struct uart_port *port;
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int ret;
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int err;
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if (tlb_type != hypervisor)
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if (op->irqs[0] == 0xffffffff)
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return -ENODEV;
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port = kmalloc(sizeof(struct uart_port), GFP_KERNEL);
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port = kzalloc(sizeof(struct uart_port), GFP_KERNEL);
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if (unlikely(!port))
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return -ENOMEM;
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memset(port, 0, sizeof(struct uart_port));
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sunhv_port = port;
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port->line = 0;
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port->ops = &sunhv_pops;
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port->type = PORT_SUNHV;
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port->uartclk = ( 29491200 / 16 ); /* arbitrary */
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/* Set this just to make uart_configure_port() happy. */
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port->membase = (unsigned char __iomem *) __pa(port);
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port->irq = get_interrupt();
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if (!port->irq) {
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kfree(port);
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return -ENODEV;
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}
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port->irq = op->irqs[0];
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port->dev = &op->dev;
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sunhv_reg.minor = sunserial_current_minor;
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sunhv_reg.nr = 1;
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ret = uart_register_driver(&sunhv_reg);
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if (ret < 0) {
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printk(KERN_ERR "SUNHV: uart_register_driver() failed %d\n",
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ret);
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kfree(port);
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return ret;
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}
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err = uart_register_driver(&sunhv_reg);
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if (err)
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goto out_free_port;
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sunhv_reg.tty_driver->name_base = sunhv_reg.minor - 64;
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sunserial_current_minor += 1;
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sunhv_reg.cons = SUNHV_CONSOLE();
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sunhv_port = port;
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err = uart_add_one_port(&sunhv_reg, port);
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if (err)
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goto out_unregister_driver;
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ret = uart_add_one_port(&sunhv_reg, port);
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if (ret < 0) {
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printk(KERN_ERR "SUNHV: uart_add_one_port() failed %d\n", ret);
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sunserial_current_minor -= 1;
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uart_unregister_driver(&sunhv_reg);
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kfree(port);
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sunhv_port = NULL;
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return -ENODEV;
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}
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err = request_irq(port->irq, sunhv_interrupt, 0, "hvcons", port);
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if (err)
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goto out_remove_port;
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if (request_irq(port->irq, sunhv_interrupt,
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SA_SHIRQ, "serial(sunhv)", port)) {
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printk(KERN_ERR "sunhv: Cannot register IRQ\n");
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uart_remove_one_port(&sunhv_reg, port);
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sunserial_current_minor -= 1;
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uart_unregister_driver(&sunhv_reg);
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kfree(port);
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sunhv_port = NULL;
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return -ENODEV;
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}
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dev_set_drvdata(&op->dev, port);
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return 0;
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out_remove_port:
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uart_remove_one_port(&sunhv_reg, port);
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out_unregister_driver:
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sunserial_current_minor -= 1;
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uart_unregister_driver(&sunhv_reg);
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out_free_port:
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kfree(port);
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sunhv_port = NULL;
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return err;
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}
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static void __exit sunhv_exit(void)
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static int __devexit hv_remove(struct of_device *dev)
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{
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struct uart_port *port = sunhv_port;
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BUG_ON(!port);
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struct uart_port *port = dev_get_drvdata(&dev->dev);
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free_irq(port->irq, port);
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uart_remove_one_port(&sunhv_reg, port);
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sunserial_current_minor -= 1;
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sunserial_current_minor -= 1;
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uart_unregister_driver(&sunhv_reg);
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kfree(sunhv_port);
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kfree(port);
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sunhv_port = NULL;
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dev_set_drvdata(&dev->dev, NULL);
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return 0;
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}
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static struct of_device_id hv_match[] = {
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{
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.name = "console",
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.compatible = "qcn",
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},
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{},
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};
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MODULE_DEVICE_TABLE(of, hv_match);
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static struct of_platform_driver hv_driver = {
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.name = "hv",
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.match_table = hv_match,
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.probe = hv_probe,
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.remove = __devexit_p(hv_remove),
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};
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static int __init sunhv_init(void)
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{
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if (tlb_type != hypervisor)
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return -ENODEV;
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return of_register_driver(&hv_driver, &of_bus_type);
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}
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static void __exit sunhv_exit(void)
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{
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of_unregister_driver(&hv_driver);
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}
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module_init(sunhv_init);
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module_exit(sunhv_exit);
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MODULE_AUTHOR("David S. Miller");
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MODULE_DESCRIPTION("SUN4V Hypervisor console driver")
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MODULE_DESCRIPTION("SUN4V Hypervisor console driver");
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MODULE_VERSION("2.0");
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MODULE_LICENSE("GPL");
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