diff options
| author | Nicolas Pitre <nico@cam.org> | 2007-07-04 23:40:34 -0400 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2007-09-23 21:02:57 +0200 |
| commit | 5ed334a1f8caaae98806d572f78c5802975ea20f (patch) | |
| tree | 782905c5f25652af672bb38ed42a68c0c71e8e4c | |
| parent | 6e418a9d26ab4fd44b3e07dc1158027cbdf0a919 (diff) | |
sdio: add /proc interface to sdio_uart driver
This mimics what the serial_core does. Useful for diagnostics.
Signed-off-by: Nicolas Pitre <npitre@mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| -rw-r--r-- | drivers/mmc/card/sdio_uart.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c index e4d9e85ff58..190120d1449 100644 --- a/drivers/mmc/card/sdio_uart.c +++ b/drivers/mmc/card/sdio_uart.c @@ -913,6 +913,67 @@ static int sdio_uart_tiocmset(struct tty_struct *tty, struct file *file, return result; } +static int sdio_uart_read_proc(char *page, char **start, off_t off, + int count, int *eof, void *data) +{ + int i, len = 0; + off_t begin = 0; + + len += sprintf(page, "serinfo:1.0 driver%s%s revision:%s\n", + "", "", ""); + for (i = 0; i < UART_NR && len < PAGE_SIZE - 96; i++) { + struct sdio_uart_port *port = sdio_uart_port_get(i); + if (port) { + len += sprintf(page+len, "%d: uart:SDIO", i); + if(capable(CAP_SYS_ADMIN)) { + len += sprintf(page + len, " tx:%d rx:%d", + port->icount.tx, port->icount.rx); + if (port->icount.frame) + len += sprintf(page + len, " fe:%d", + port->icount.frame); + if (port->icount.parity) + len += sprintf(page + len, " pe:%d", + port->icount.parity); + if (port->icount.brk) + len += sprintf(page + len, " brk:%d", + port->icount.brk); + if (port->icount.overrun) + len += sprintf(page + len, " oe:%d", + port->icount.overrun); + if (port->icount.cts) + len += sprintf(page + len, " cts:%d", + port->icount.cts); + if (port->icount.dsr) + len += sprintf(page + len, " dsr:%d", + port->icount.dsr); + if (port->icount.rng) + len += sprintf(page + len, " rng:%d", + port->icount.rng); + if (port->icount.dcd) + len += sprintf(page + len, " dcd:%d", + port->icount.dcd); + } + strcat(page, "\n"); + len++; + sdio_uart_port_put(port); + } + + if (len + begin > off + count) + goto done; + if (len + begin < off) { + begin += len; + len = 0; + } + } + *eof = 1; + +done: + if (off >= len + begin) + return 0; + *start = page + (off - begin); + return (count < begin + len - off) ? count : (begin + len - off); +} + static const struct tty_operations sdio_uart_ops = { .open = sdio_uart_open, .close = sdio_uart_close, @@ -926,6 +987,7 @@ static const struct tty_operations sdio_uart_ops = { .break_ctl = sdio_uart_break_ctl, .tiocmget = sdio_uart_tiocmget, .tiocmset = sdio_uart_tiocmset, + .read_proc = sdio_uart_read_proc, }; static struct tty_driver *sdio_uart_tty_driver; |