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Subject[PATCH 30/41] TTY: moxa, convert to dynamic device
Date
This allows us to provide the tty layer with information about
tty_port for each link.

We also provide a tty_port for the service port. For this one we allow
only ioctl, so this is pretty ugly.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/tty/moxa.c | 24 ++++++++++++++++++++----
1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 89cc934..9dffc72 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -169,6 +169,7 @@ static DEFINE_SPINLOCK(moxa_lock);
static unsigned long baseaddr[MAX_BOARDS];
static unsigned int type[MAX_BOARDS];
static unsigned int numports[MAX_BOARDS];
+static struct tty_port moxa_service_port;

MODULE_AUTHOR("William Chen");
MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
@@ -834,7 +835,7 @@ static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev)
const struct firmware *fw;
const char *file;
struct moxa_port *p;
- unsigned int i;
+ unsigned int i, first_idx;
int ret;

brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports),
@@ -887,6 +888,11 @@ static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev)
mod_timer(&moxaTimer, jiffies + HZ / 50);
spin_unlock_bh(&moxa_lock);

+ first_idx = (brd - moxa_boards) * MAX_PORTS_PER_BOARD;
+ for (i = 0; i < brd->numPorts; i++)
+ tty_port_register_device(&brd->ports[i].port, moxaDriver,
+ first_idx + i, dev);
+
return 0;
err_free:
kfree(brd->ports);
@@ -896,7 +902,7 @@ err:

static void moxa_board_deinit(struct moxa_board_conf *brd)
{
- unsigned int a, opened;
+ unsigned int a, opened, first_idx;

mutex_lock(&moxa_openlock);
spin_lock_bh(&moxa_lock);
@@ -925,6 +931,10 @@ static void moxa_board_deinit(struct moxa_board_conf *brd)
mutex_lock(&moxa_openlock);
}

+ first_idx = (brd - moxa_boards) * MAX_PORTS_PER_BOARD;
+ for (a = 0; a < brd->numPorts; a++)
+ tty_unregister_device(moxaDriver, first_idx + a);
+
iounmap(brd->basemem);
brd->basemem = NULL;
kfree(brd->ports);
@@ -1031,7 +1041,12 @@ static int __init moxa_init(void)

printk(KERN_INFO "MOXA Intellio family driver version %s\n",
MOXA_VERSION);
- moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
+
+ tty_port_init(&moxa_service_port);
+
+ moxaDriver = tty_alloc_driver(MAX_PORTS + 1,
+ TTY_DRIVER_REAL_RAW |
+ TTY_DRIVER_DYNAMIC_DEV);
if (!moxaDriver)
return -ENOMEM;

@@ -1044,8 +1059,9 @@ static int __init moxa_init(void)
moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
moxaDriver->init_termios.c_ispeed = 9600;
moxaDriver->init_termios.c_ospeed = 9600;
- moxaDriver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(moxaDriver, &moxa_ops);
+ /* Having one more port only for ioctls is ugly */
+ tty_port_link_device(&moxa_service_port, moxaDriver, MAX_PORTS);

if (tty_register_driver(moxaDriver)) {
printk(KERN_ERR "can't register MOXA Smartio tty driver!\n");
--
1.7.10.4



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