From 9f7cdfe0cf7437a4ac87043622657ef34db61048 Mon Sep 17 00:00:00 2001
From: Nicolas Thill <nico@openwrt.org>
Date: Wed, 19 Oct 2005 02:41:50 +0000
Subject: [PATCH] add pl2303 bugfixes (thanks to komodo)
SVN-Revision: 2178
---
.../patches/generic/211-pl2303_bugfixes.patch | 146 ++++++++++++++++++
1 file changed, 146 insertions(+)
create mode 100644 openwrt/target/linux/linux-2.4/patches/generic/211-pl2303_bugfixes.patch
diff --git a/openwrt/target/linux/linux-2.4/patches/generic/211-pl2303_bugfixes.patch b/openwrt/target/linux/linux-2.4/patches/generic/211-pl2303_bugfixes.patch
new file mode 100644
index 0000000000..bf7c3c3c42
--- /dev/null
+++ b/openwrt/target/linux/linux-2.4/patches/generic/211-pl2303_bugfixes.patch
@@ -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 */
--
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