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Message-Id: <1484960154-6355-1-git-send-email-sudipm.mukherjee@gmail.com>
Date: Sat, 21 Jan 2017 00:55:54 +0000
From: Sudip Mukherjee <sudipm.mukherjee@...il.com>
To: Jarod Wilson <jarod@...sonet.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
devel@...verdev.osuosl.org
Subject: [PATCH RESEND] staging: media: lirc: use new parport device model
From: Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>
Modify lirc_parallel driver to use the new parallel port device model.
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>
---
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
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