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add pl2303 bugfixes (thanks to komodo)

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@2178 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nico 2005-10-19 02:41:50 +00:00
parent 9e3844d7fa
commit 3eff226019
1 changed files with 146 additions and 0 deletions
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146
openwrt/target/linux/linux-2.4/patches/generic/211-pl2303_bugfixes.patch Normal file
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@ -0,0 +1,146 @@
--- linux/drivers/usb/serial/pl2303.c.orig 2005-10-17 12:09:48.000000000 +0200
+++ linux/drivers/usb/serial/pl2303.c 2005-10-19 04:10:46.000000000 +0200
@@ -14,6 +14,13 @@
* See Documentation/usb/usb-serial.txt for more information on using this driver
*
*
+ * 2005_Oct_19 grsch
+ * added some missing ioctl commands
+ * it seems that there's still an issue with the 2.6.8 version when
+ * using the device with echo "whatever" >/dev/usb/tts/0 .
+ * Apparently, a timeout is needed upon pl2303_close (implemented in
+ * 2.6.13.4)
+ *
* 2005_Mar_05 grsch
* ported 2.6.8 pl2303.c to 2.4.20 format
* (HX model works fine now, ID table should be brought up to date)
@@ -142,9 +149,8 @@
static int pl2303_write (struct usb_serial_port *port, int from_user,
const unsigned char *buf, int count);
static void pl2303_break_ctl(struct usb_serial_port *port,int break_state);
-static int pl2303_tiocmget (struct usb_serial_port *port, struct file *file);
-static int pl2303_tiocmset (struct usb_serial_port *port, struct file *file,
- unsigned int set, unsigned int clear);
+static int pl2303_tiocmget (struct usb_serial_port *port, unsigned int* value);
+static int pl2303_tiocmset (struct usb_serial_port *port, unsigned int cmd, unsigned int *value);
static int pl2303_startup (struct usb_serial *serial);
static void pl2303_shutdown (struct usb_serial *serial);
@@ -642,11 +648,108 @@
return 0;
}
+
+
+static int pl2303_tiocmget (struct usb_serial_port *port, unsigned int *value)
+{
+ struct pl2303_private *priv = usb_get_serial_port_data(port);
+ unsigned long flags;
+ unsigned int mcr;
+ unsigned int status;
+ unsigned int result;
+
+ dbg("%s (%d)", __FUNCTION__, port->number);
+
+ spin_lock_irqsave (&priv->lock, flags);
+ mcr = priv->line_control;
+ status = priv->line_status;
+ spin_unlock_irqrestore (&priv->lock, flags);
+
+ result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
+ | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
+ | ((status & UART_CTS) ? TIOCM_CTS : 0)
+ | ((status & UART_DSR) ? TIOCM_DSR : 0)
+ | ((status & UART_RING) ? TIOCM_RI : 0)
+ | ((status & UART_DCD) ? TIOCM_CD : 0);
+
+ dbg("%s - result = %x", __FUNCTION__, result);
+
+ if (copy_to_user(value, &result, sizeof(int)))
+ return -EFAULT;
+ return 0;
+}
+
+
+
+static int pl2303_tiocmset (struct usb_serial_port *port, unsigned int cmd, unsigned int *value)
+{
+ /*
+ struct pl2303_private *priv = usb_get_serial_port_data(port);
+ unsigned long flags;
+ u8 control;
+
+ spin_lock_irqsave (&priv->lock, flags);
+ if (set & TIOCM_RTS)
+ priv->line_control |= CONTROL_RTS;
+ if (set & TIOCM_DTR)
+ priv->line_control |= CONTROL_DTR;
+ if (clear & TIOCM_RTS)
+ priv->line_control &= ~CONTROL_RTS;
+ if (clear & TIOCM_DTR)
+ priv->line_control &= ~CONTROL_DTR;
+ control = priv->line_control;
+ spin_unlock_irqrestore (&priv->lock, flags);
+
+ return set_control_lines (port->serial->dev, control);
+ */
+ struct pl2303_private *priv = port->private;
+ unsigned int arg;
+
+ if (copy_from_user(&arg, value, sizeof(int)))
+ return -EFAULT;
+
+ switch (cmd) {
+ case TIOCMBIS:
+ if (arg & TIOCM_RTS)
+ priv->line_control |= CONTROL_RTS;
+ if (arg & TIOCM_DTR)
+ priv->line_control |= CONTROL_DTR;
+ break;
+
+ case TIOCMBIC:
+ if (arg & TIOCM_RTS)
+ priv->line_control &= ~CONTROL_RTS;
+ if (arg & TIOCM_DTR)
+ priv->line_control &= ~CONTROL_DTR;
+ break;
+
+ case TIOCMSET:
+ /* turn off RTS and DTR and then only turn
+ on what was asked to */
+ priv->line_control &= ~(CONTROL_RTS | CONTROL_DTR);
+ priv->line_control |= ((arg & TIOCM_RTS) ? CONTROL_RTS : 0);
+ priv->line_control |= ((arg & TIOCM_DTR) ? CONTROL_DTR : 0);
+ break;
+ }
+
+ return set_control_lines (port->serial->dev, priv->line_control);
+}
+
+
+
static int pl2303_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
{
dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd);
switch (cmd) {
+ case TIOCMGET:
+ dbg("%s (%d) TIOCMGET", __FUNCTION__, port->number);
+ return pl2303_tiocmget(port,(unsigned int *)arg);
+ case TIOCMBIS:
+ case TIOCMBIC:
+ case TIOCMSET:
+ dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__, port->number);
+ return pl2303_tiocmset(port,cmd,(unsigned int*)arg);
case TIOCMIWAIT:
dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number);
return wait_modem_info(port, arg);
@@ -705,6 +808,8 @@
dbg("%s (%d)", __FUNCTION__, port->number);
+ dbg("%s - urb status %d...", __FUNCTION__, urb->status);
+
switch (urb->status) {
case 0:
/* success */