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authorNicolas Pitre <nico@cam.org>2007-07-04 23:40:34 -0400
committerPierre Ossman <drzeus@drzeus.cx>2007-09-23 21:02:57 +0200
commit5ed334a1f8caaae98806d572f78c5802975ea20f (patch)
tree782905c5f25652af672bb38ed42a68c0c71e8e4c
parent6e418a9d26ab4fd44b3e07dc1158027cbdf0a919 (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.c62
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;