USB: serial: mos7840: add support for MCS7810 devices
This patch added the support of MCS7810 device for the mos7840 driver. The MCS7810 device supports single USB2.0-to-Serial port with a LED indicator for reflecting transmission or reception activity. Signed-off-by: Donald Lee <donald@asix.com.tw> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Donald
Greg Kroah-Hartman
parent
c256667f04
commit
0eafe4de1a
1 changed files with 188 additions and 14 deletions
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@ -114,6 +114,7 @@
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#define USB_VENDOR_ID_MOSCHIP 0x9710
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#define MOSCHIP_DEVICE_ID_7840 0x7840
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#define MOSCHIP_DEVICE_ID_7820 0x7820
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#define MOSCHIP_DEVICE_ID_7810 0x7810
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/* The native component can have its vendor/device id's overridden
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* in vendor-specific implementations. Such devices can be handled
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* by making a change here, in moschip_port_id_table, and in
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@ -184,10 +185,16 @@
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#define NUM_URBS 16 /* URB Count */
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#define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */
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/* LED on/off milliseconds*/
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#define LED_ON_MS 500
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#define LED_OFF_MS 500
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static int device_type;
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static const struct usb_device_id moschip_port_id_table[] = {
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{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)},
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{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
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{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)},
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{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)},
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{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)},
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{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)},
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@ -209,6 +216,7 @@ static const struct usb_device_id moschip_port_id_table[] = {
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static const struct usb_device_id moschip_id_table_combined[] __devinitconst = {
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{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)},
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{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
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{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)},
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{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)},
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{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)},
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{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)},
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@ -261,8 +269,13 @@ struct moschip_port {
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struct urb *write_urb_pool[NUM_URBS];
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char busy[NUM_URBS];
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bool read_urb_busy;
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};
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/* For device(s) with LED indicator */
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bool has_led;
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bool led_flag;
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struct timer_list led_timer1; /* Timer for LED on */
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struct timer_list led_timer2; /* Timer for LED off */
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};
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static bool debug;
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@ -572,6 +585,69 @@ static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg,
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return ret;
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}
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static void mos7840_set_led_callback(struct urb *urb)
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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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break;
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case -ECONNRESET:
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case -ENOENT:
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case -ESHUTDOWN:
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/* This urb is terminated, clean up */
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dbg("%s - urb shutting down with status: %d", __func__,
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urb->status);
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break;
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default:
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dbg("%s - nonzero urb status received: %d", __func__,
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urb->status);
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}
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}
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static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval,
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__u16 reg)
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{
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struct usb_device *dev = mcs->port->serial->dev;
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struct usb_ctrlrequest *dr = mcs->dr;
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dr->bRequestType = MCS_WR_RTYPE;
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dr->bRequest = MCS_WRREQ;
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dr->wValue = cpu_to_le16(wval);
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dr->wIndex = cpu_to_le16(reg);
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dr->wLength = cpu_to_le16(0);
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usb_fill_control_urb(mcs->control_urb, dev, usb_sndctrlpipe(dev, 0),
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(unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL);
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usb_submit_urb(mcs->control_urb, GFP_ATOMIC);
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}
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static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg,
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__u16 val)
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{
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struct usb_device *dev = port->serial->dev;
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usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE,
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val, reg, NULL, 0, MOS_WDR_TIMEOUT);
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}
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static void mos7840_led_off(unsigned long arg)
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{
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struct moschip_port *mcs = (struct moschip_port *) arg;
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/* Turn off LED */
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mos7840_set_led_async(mcs, 0x0300, MODEM_CONTROL_REGISTER);
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mod_timer(&mcs->led_timer2,
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jiffies + msecs_to_jiffies(LED_OFF_MS));
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}
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static void mos7840_led_flag_off(unsigned long arg)
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{
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struct moschip_port *mcs = (struct moschip_port *) arg;
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mcs->led_flag = false;
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}
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/*****************************************************************************
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* mos7840_interrupt_callback
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* this is the callback function for when we have received data on the
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@ -792,6 +868,14 @@ static void mos7840_bulk_in_callback(struct urb *urb)
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return;
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}
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/* Turn on LED */
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if (mos7840_port->has_led && !mos7840_port->led_flag) {
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mos7840_port->led_flag = true;
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mos7840_set_led_async(mos7840_port, 0x0301,
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MODEM_CONTROL_REGISTER);
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mod_timer(&mos7840_port->led_timer1,
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jiffies + msecs_to_jiffies(LED_ON_MS));
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}
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mos7840_port->read_urb_busy = true;
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retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
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@ -1554,6 +1638,14 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port,
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data1 = urb->transfer_buffer;
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dbg("bulkout endpoint is %d", port->bulk_out_endpointAddress);
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/* Turn on LED */
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if (mos7840_port->has_led && !mos7840_port->led_flag) {
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mos7840_port->led_flag = true;
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mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0301);
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mod_timer(&mos7840_port->led_timer1,
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jiffies + msecs_to_jiffies(LED_ON_MS));
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}
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/* send it down the pipe */
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status = usb_submit_urb(urb, GFP_ATOMIC);
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@ -2327,28 +2419,74 @@ static int mos7840_ioctl(struct tty_struct *tty,
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return -ENOIOCTLCMD;
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}
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static int mos7810_check(struct usb_serial *serial)
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{
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int i, pass_count = 0;
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__u16 data = 0, mcr_data = 0;
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__u16 test_pattern = 0x55AA;
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/* Store MCR setting */
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usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
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MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER,
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&mcr_data, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT);
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for (i = 0; i < 16; i++) {
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/* Send the 1-bit test pattern out to MCS7810 test pin */
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usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
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MCS_WRREQ, MCS_WR_RTYPE,
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(0x0300 | (((test_pattern >> i) & 0x0001) << 1)),
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MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT);
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/* Read the test pattern back */
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usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
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MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data,
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VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT);
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/* If this is a MCS7810 device, both test patterns must match */
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if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001)
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break;
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pass_count++;
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}
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/* Restore MCR setting */
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usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), MCS_WRREQ,
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MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL,
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0, MOS_WDR_TIMEOUT);
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if (pass_count == 16)
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return 1;
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return 0;
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}
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static int mos7840_calc_num_ports(struct usb_serial *serial)
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{
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__u16 Data = 0x00;
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int ret = 0;
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__u16 data = 0x00;
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int mos7840_num_ports;
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ret = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
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MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &Data,
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usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
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MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data,
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VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT);
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if ((Data & 0x01) == 0) {
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mos7840_num_ports = 2;
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serial->num_bulk_in = 2;
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serial->num_bulk_out = 2;
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serial->num_ports = 2;
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if (serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7810 ||
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serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7820) {
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device_type = serial->dev->descriptor.idProduct;
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} else {
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mos7840_num_ports = 4;
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serial->num_bulk_in = 4;
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serial->num_bulk_out = 4;
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serial->num_ports = 4;
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/* For a MCS7840 device GPIO0 must be set to 1 */
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if ((data & 0x01) == 1)
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device_type = MOSCHIP_DEVICE_ID_7840;
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else if (mos7810_check(serial))
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device_type = MOSCHIP_DEVICE_ID_7810;
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else
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device_type = MOSCHIP_DEVICE_ID_7820;
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}
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mos7840_num_ports = (device_type >> 4) & 0x000F;
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serial->num_bulk_in = mos7840_num_ports;
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serial->num_bulk_out = mos7840_num_ports;
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serial->num_ports = mos7840_num_ports;
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return mos7840_num_ports;
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}
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@ -2563,6 +2701,34 @@ static int mos7840_startup(struct usb_serial *serial)
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status = -ENOMEM;
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goto error;
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}
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mos7840_port->has_led = false;
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/* Initialize LED timers */
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if (device_type == MOSCHIP_DEVICE_ID_7810) {
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mos7840_port->has_led = true;
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init_timer(&mos7840_port->led_timer1);
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mos7840_port->led_timer1.function = mos7840_led_off;
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mos7840_port->led_timer1.expires =
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jiffies + msecs_to_jiffies(LED_ON_MS);
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mos7840_port->led_timer1.data =
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(unsigned long)mos7840_port;
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init_timer(&mos7840_port->led_timer2);
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mos7840_port->led_timer2.function =
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mos7840_led_flag_off;
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mos7840_port->led_timer2.expires =
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jiffies + msecs_to_jiffies(LED_OFF_MS);
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mos7840_port->led_timer2.data =
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(unsigned long)mos7840_port;
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mos7840_port->led_flag = false;
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/* Turn off LED */
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mos7840_set_led_sync(serial->port[i],
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MODEM_CONTROL_REGISTER, 0x0300);
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}
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}
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dbg ("mos7840_startup: all ports configured...........");
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@ -2654,6 +2820,14 @@ static void mos7840_release(struct usb_serial *serial)
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mos7840_port = mos7840_get_port_private(serial->port[i]);
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dbg("mos7840_port %d = %p", i, mos7840_port);
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if (mos7840_port) {
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if (mos7840_port->has_led) {
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/* Turn off LED */
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mos7840_set_led_sync(mos7840_port->port,
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MODEM_CONTROL_REGISTER, 0x0300);
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del_timer_sync(&mos7840_port->led_timer1);
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del_timer_sync(&mos7840_port->led_timer2);
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}
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kfree(mos7840_port->ctrl_buf);
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kfree(mos7840_port->dr);
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kfree(mos7840_port);
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