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add pl2303 bugfixes (thanks to komodo)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2178 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nico
parent
037da526c5
commit
4dbe178493
146
target/linux/linux-2.4/patches/generic/211-pl2303_bugfixes.patch
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146
target/linux/linux-2.4/patches/generic/211-pl2303_bugfixes.patch
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@ -0,0 +1,146 @@
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--- linux/drivers/usb/serial/pl2303.c.orig 2005-10-17 12:09:48.000000000 +0200
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+++ linux/drivers/usb/serial/pl2303.c 2005-10-19 04:10:46.000000000 +0200
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@@ -14,6 +14,13 @@
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* See Documentation/usb/usb-serial.txt for more information on using this driver
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*
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*
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+ * 2005_Oct_19 grsch
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+ * added some missing ioctl commands
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+ * it seems that there's still an issue with the 2.6.8 version when
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+ * using the device with echo "whatever" >/dev/usb/tts/0 .
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+ * Apparently, a timeout is needed upon pl2303_close (implemented in
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+ * 2.6.13.4)
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+ *
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* 2005_Mar_05 grsch
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* ported 2.6.8 pl2303.c to 2.4.20 format
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* (HX model works fine now, ID table should be brought up to date)
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@@ -142,9 +149,8 @@
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static int pl2303_write (struct usb_serial_port *port, int from_user,
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const unsigned char *buf, int count);
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static void pl2303_break_ctl(struct usb_serial_port *port,int break_state);
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-static int pl2303_tiocmget (struct usb_serial_port *port, struct file *file);
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-static int pl2303_tiocmset (struct usb_serial_port *port, struct file *file,
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- unsigned int set, unsigned int clear);
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+static int pl2303_tiocmget (struct usb_serial_port *port, unsigned int* value);
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+static int pl2303_tiocmset (struct usb_serial_port *port, unsigned int cmd, unsigned int *value);
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static int pl2303_startup (struct usb_serial *serial);
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static void pl2303_shutdown (struct usb_serial *serial);
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@@ -642,11 +648,108 @@
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return 0;
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}
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+
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+
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+static int pl2303_tiocmget (struct usb_serial_port *port, unsigned int *value)
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+{
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+ struct pl2303_private *priv = usb_get_serial_port_data(port);
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+ unsigned long flags;
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+ unsigned int mcr;
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+ unsigned int status;
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+ unsigned int result;
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+
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+ dbg("%s (%d)", __FUNCTION__, port->number);
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+
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+ spin_lock_irqsave (&priv->lock, flags);
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+ mcr = priv->line_control;
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+ status = priv->line_status;
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+ spin_unlock_irqrestore (&priv->lock, flags);
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+
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+ result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
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+ | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
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+ | ((status & UART_CTS) ? TIOCM_CTS : 0)
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+ | ((status & UART_DSR) ? TIOCM_DSR : 0)
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+ | ((status & UART_RING) ? TIOCM_RI : 0)
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+ | ((status & UART_DCD) ? TIOCM_CD : 0);
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+
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+ dbg("%s - result = %x", __FUNCTION__, result);
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+
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+ if (copy_to_user(value, &result, sizeof(int)))
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+ return -EFAULT;
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+ return 0;
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+}
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+
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+
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+
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+static int pl2303_tiocmset (struct usb_serial_port *port, unsigned int cmd, unsigned int *value)
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+{
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+ /*
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+ struct pl2303_private *priv = usb_get_serial_port_data(port);
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+ unsigned long flags;
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+ u8 control;
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+
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+ spin_lock_irqsave (&priv->lock, flags);
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+ if (set & TIOCM_RTS)
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+ priv->line_control |= CONTROL_RTS;
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+ if (set & TIOCM_DTR)
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+ priv->line_control |= CONTROL_DTR;
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+ if (clear & TIOCM_RTS)
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+ priv->line_control &= ~CONTROL_RTS;
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+ if (clear & TIOCM_DTR)
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+ priv->line_control &= ~CONTROL_DTR;
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+ control = priv->line_control;
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+ spin_unlock_irqrestore (&priv->lock, flags);
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+
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+ return set_control_lines (port->serial->dev, control);
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+ */
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+ struct pl2303_private *priv = port->private;
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+ unsigned int arg;
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+
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+ if (copy_from_user(&arg, value, sizeof(int)))
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+ return -EFAULT;
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+
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+ switch (cmd) {
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+ case TIOCMBIS:
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+ if (arg & TIOCM_RTS)
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+ priv->line_control |= CONTROL_RTS;
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+ if (arg & TIOCM_DTR)
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+ priv->line_control |= CONTROL_DTR;
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+ break;
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+
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+ case TIOCMBIC:
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+ if (arg & TIOCM_RTS)
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+ priv->line_control &= ~CONTROL_RTS;
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+ if (arg & TIOCM_DTR)
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+ priv->line_control &= ~CONTROL_DTR;
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+ break;
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+
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+ case TIOCMSET:
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+ /* turn off RTS and DTR and then only turn
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+ on what was asked to */
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+ priv->line_control &= ~(CONTROL_RTS | CONTROL_DTR);
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+ priv->line_control |= ((arg & TIOCM_RTS) ? CONTROL_RTS : 0);
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+ priv->line_control |= ((arg & TIOCM_DTR) ? CONTROL_DTR : 0);
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+ break;
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+ }
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+
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+ return set_control_lines (port->serial->dev, priv->line_control);
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+}
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+
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+
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+
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static int pl2303_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
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{
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dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd);
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switch (cmd) {
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+ case TIOCMGET:
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+ dbg("%s (%d) TIOCMGET", __FUNCTION__, port->number);
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+ return pl2303_tiocmget(port,(unsigned int *)arg);
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+ case TIOCMBIS:
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+ case TIOCMBIC:
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+ case TIOCMSET:
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+ dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__, port->number);
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+ return pl2303_tiocmset(port,cmd,(unsigned int*)arg);
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case TIOCMIWAIT:
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dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number);
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return wait_modem_info(port, arg);
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@@ -705,6 +808,8 @@
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dbg("%s (%d)", __FUNCTION__, port->number);
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+ dbg("%s - urb status %d...", __FUNCTION__, urb->status);
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+
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switch (urb->status) {
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case 0:
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/* success */
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