From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934438AbbCQJsy (ORCPT ); Tue, 17 Mar 2015 05:48:54 -0400 Received: from mail-pa0-f41.google.com ([209.85.220.41]:35006 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932486AbbCQJsl (ORCPT ); Tue, 17 Mar 2015 05:48:41 -0400 From: Peter Hung X-Google-Original-From: Peter Hung To: johan@kernel.org Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, tom_tsai@fintek.com.tw, peter_hong@fintek.com.tw, Peter Hung Subject: [PATCH V9 02/10] USB: f81232: implement RX bulk-in EP Date: Tue, 17 Mar 2015 17:48:20 +0800 Message-Id: <1426585708-6382-3-git-send-email-hpeter+linux_kernel@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1426585708-6382-1-git-send-email-hpeter+linux_kernel@gmail.com> References: <1426585708-6382-1-git-send-email-hpeter+linux_kernel@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The F81232 bulk-in is RX data + LSR channel, data format is [LSR+Data][LSR+Data]..... , We had implemented in f81232_process_read_urb(). Signed-off-by: Peter Hung --- drivers/usb/serial/f81232.c | 73 +++++++++++++++++++++++++-------------------- 1 file changed, 40 insertions(+), 33 deletions(-) diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c index 669a2f2..6b83870b 100644 --- a/drivers/usb/serial/f81232.c +++ b/drivers/usb/serial/f81232.c @@ -23,6 +23,7 @@ #include #include #include +#include static const struct usb_device_id id_table[] = { { USB_DEVICE(0x1934, 0x0706) }, @@ -104,44 +105,50 @@ exit: static void f81232_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; - struct f81232_private *priv = usb_get_serial_port_data(port); unsigned char *data = urb->transfer_buffer; - char tty_flag = TTY_NORMAL; - unsigned long flags; - u8 line_status; - int i; + char tty_flag; + unsigned int i; + u8 lsr; - /* update line status */ - spin_lock_irqsave(&priv->lock, flags); - line_status = priv->modem_status; - priv->modem_status &= ~UART_STATE_TRANSIENT_MASK; - spin_unlock_irqrestore(&priv->lock, flags); + /* It's had 1-byte packet on open, the data is current LSR. but + * in this situation, the byte useless for open. + */ - if (!urb->actual_length) + if ((urb->actual_length < 2) || (urb->actual_length % 2)) return; - /* break takes precedence over parity, */ - /* which takes precedence over framing errors */ - if (line_status & UART_BREAK_ERROR) - tty_flag = TTY_BREAK; - else if (line_status & UART_PARITY_ERROR) - tty_flag = TTY_PARITY; - else if (line_status & UART_FRAME_ERROR) - tty_flag = TTY_FRAME; - dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, tty_flag); - - /* overrun is special, not associated with a char */ - if (line_status & UART_OVERRUN_ERROR) - tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); - - if (port->port.console && port->sysrq) { - for (i = 0; i < urb->actual_length; ++i) - if (!usb_serial_handle_sysrq_char(port, data[i])) - tty_insert_flip_char(&port->port, data[i], - tty_flag); - } else { - tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, - urb->actual_length); + /* bulk-in data: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]... */ + + for (i = 0; i < urb->actual_length; i += 2) { + tty_flag = TTY_NORMAL; + lsr = data[i]; + + if (lsr & UART_LSR_BRK_ERROR_BITS) { + if (lsr & UART_LSR_BI) { + tty_flag = TTY_BREAK; + port->icount.brk++; + usb_serial_handle_break(port); + } else if (lsr & UART_LSR_PE) { + tty_flag = TTY_PARITY; + port->icount.parity++; + } else if (lsr & UART_LSR_FE) { + tty_flag = TTY_FRAME; + port->icount.frame++; + } + + if (lsr & UART_LSR_OE) { + port->icount.overrun++; + tty_insert_flip_char(&port->port, 0, + TTY_OVERRUN); + } + } + + if (port->port.console && port->sysrq) { + if (usb_serial_handle_sysrq_char(port, data[i + 1])) + continue; + } + + tty_insert_flip_char(&port->port, data[i + 1], tty_flag); } tty_flip_buffer_push(&port->port); -- 1.9.1