From: Sudip Mukherjee <sudip.mukherjee@xxxxxxxxxxxxxxx> Modify lirc_parallel driver to use the new parallel port device model. Signed-off-by: Sudip Mukherjee <sudip.mukherjee@xxxxxxxxxxxxxxx> --- Resending after more than one year. Prevoius patch is at https://patchwork.kernel.org/patch/7883591/ drivers/staging/media/lirc/lirc_parallel.c | 93 ++++++++++++++++++++---------- 1 file changed, 62 insertions(+), 31 deletions(-) diff --git a/drivers/staging/media/lirc/lirc_parallel.c b/drivers/staging/media/lirc/lirc_parallel.c index bfb76a4..0a43bac2b 100644 --- a/drivers/staging/media/lirc/lirc_parallel.c +++ b/drivers/staging/media/lirc/lirc_parallel.c @@ -626,41 +626,26 @@ static void kf(void *handle) /*** module initialization and cleanup ***/ -static int __init lirc_parallel_init(void) +static void lirc_parallel_attach(struct parport *port) { - int result; - - result = platform_driver_register(&lirc_parallel_driver); - if (result) { - pr_notice("platform_driver_register returned %d\n", result); - return result; - } + struct pardev_cb lirc_parallel_cb; - lirc_parallel_dev = platform_device_alloc(LIRC_DRIVER_NAME, 0); - if (!lirc_parallel_dev) { - result = -ENOMEM; - goto exit_driver_unregister; - } + if (port->base != io) + return; - result = platform_device_add(lirc_parallel_dev); - if (result) - goto exit_device_put; + pport = port; + memset(&lirc_parallel_cb, 0, sizeof(lirc_parallel_cb)); + lirc_parallel_cb.preempt = pf; + lirc_parallel_cb.wakeup = kf; + lirc_parallel_cb.irq_func = lirc_lirc_irq_handler; - pport = parport_find_base(io); - if (!pport) { - pr_notice("no port at %x found\n", io); - result = -ENXIO; - goto exit_device_del; - } - ppdevice = parport_register_device(pport, LIRC_DRIVER_NAME, - pf, kf, lirc_lirc_irq_handler, 0, - NULL); - parport_put_port(pport); + ppdevice = parport_register_dev_model(port, LIRC_DRIVER_NAME, + &lirc_parallel_cb, 0); if (!ppdevice) { pr_notice("parport_register_device() failed\n"); - result = -ENXIO; - goto exit_device_del; + return; } + if (parport_claim(ppdevice) != 0) goto skip_init; is_claimed = 1; @@ -688,18 +673,64 @@ static int __init lirc_parallel_init(void) is_claimed = 0; parport_release(ppdevice); + skip_init: + return; +} + +static void lirc_parallel_detach(struct parport *port) +{ + if (port->base != io) + return; + + parport_unregister_device(ppdevice); +} + +static struct parport_driver lirc_parport_driver = { + .name = LIRC_DRIVER_NAME, + .match_port = lirc_parallel_attach, + .detach = lirc_parallel_detach, + .devmodel = true, +}; + +static int __init lirc_parallel_init(void) +{ + int result; + + result = platform_driver_register(&lirc_parallel_driver); + if (result) { + pr_notice("platform_driver_register returned %d\n", result); + return result; + } + + lirc_parallel_dev = platform_device_alloc(LIRC_DRIVER_NAME, 0); + if (!lirc_parallel_dev) { + result = -ENOMEM; + goto exit_driver_unregister; + } + + result = platform_device_add(lirc_parallel_dev); + if (result) + goto exit_device_put; + + result = parport_register_driver(&lirc_parport_driver); + if (result) { + pr_notice("parport_register_driver returned %d\n", result); + goto exit_device_del; + } + driver.dev = &lirc_parallel_dev->dev; driver.minor = lirc_register_driver(&driver); if (driver.minor < 0) { pr_notice("register_chrdev() failed\n"); - parport_unregister_device(ppdevice); result = -EIO; - goto exit_device_del; + goto exit_unregister; } pr_info("installed using port 0x%04x irq %d\n", io, irq); return 0; +exit_unregister: + parport_unregister_driver(&lirc_parport_driver); exit_device_del: platform_device_del(lirc_parallel_dev); exit_device_put: @@ -711,9 +742,9 @@ static int __init lirc_parallel_init(void) static void __exit lirc_parallel_exit(void) { - parport_unregister_device(ppdevice); lirc_unregister_driver(driver.minor); + parport_unregister_driver(&lirc_parport_driver); platform_device_unregister(lirc_parallel_dev); platform_driver_unregister(&lirc_parallel_driver); } -- 1.9.1 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
