From: "Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
To: johan@kernel.org
Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, peter_hong@fintek.com.tw,
"Ji-Ze Hong (Peter Hong)" <hpeter+linux_kernel@gmail.com>
Subject: [PATCH V3 1/6] USB: serial: f81232: Extract LSR handler
Date: Thu, 30 Jan 2020 13:47:47 +0800 [thread overview]
Message-ID: <20200130054752.9368-2-hpeter+linux_kernel@gmail.com> (raw)
In-Reply-To: <20200130054752.9368-1-hpeter+linux_kernel@gmail.com>
Extract LSR handler to function that can be re-used by
F81532A/534A/535/536.
Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
---
Changelog:
v3:
1. Change git comment for describe more information.
v2:
1: Separate LSR handler from original combined driver.
drivers/usb/serial/f81232.c | 53 +++++++++++++++++++++----------------
1 file changed, 30 insertions(+), 23 deletions(-)
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index 43fa1f0716b7..c07d376c743d 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -322,10 +322,38 @@ static void f81232_read_int_callback(struct urb *urb)
__func__, retval);
}
+static char f81232_handle_lsr(struct usb_serial_port *port, u8 lsr)
+{
+ struct f81232_private *priv = usb_get_serial_port_data(port);
+ char tty_flag = TTY_NORMAL;
+
+ if (!(lsr & UART_LSR_BRK_ERROR_BITS))
+ return tty_flag;
+
+ 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++;
+ schedule_work(&priv->lsr_work);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
+ }
+
+ return tty_flag;
+}
+
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;
unsigned int i;
@@ -341,29 +369,8 @@ static void f81232_process_read_urb(struct urb *urb)
/* 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++;
- schedule_work(&priv->lsr_work);
- tty_insert_flip_char(&port->port, 0,
- TTY_OVERRUN);
- }
- }
+ tty_flag = f81232_handle_lsr(port, lsr);
if (port->port.console && port->sysrq) {
if (usb_serial_handle_sysrq_char(port, data[i + 1]))
--
2.17.1
next prev parent reply other threads:[~2020-01-30 5:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-30 5:47 [PATCH V3 0/6] Add Fintek F81534A series usb-to-serial driver Ji-Ze Hong (Peter Hong)
2020-01-30 5:47 ` Ji-Ze Hong (Peter Hong) [this message]
2020-01-30 5:47 ` [PATCH V3 2/6] USB: serial: f81232: Add tx_empty function Ji-Ze Hong (Peter Hong)
2020-01-30 5:47 ` [PATCH V3 3/6] USB: serial: f81232: Use devm_kzalloc Ji-Ze Hong (Peter Hong)
2020-01-30 5:47 ` [PATCH V3 4/6] USB: serial: f81232: Add F81534A support Ji-Ze Hong (Peter Hong)
2020-02-25 11:13 ` Johan Hovold
2020-01-30 5:47 ` [PATCH V3 5/6] USB: serial: f81232: Set F81534A serial port with RS232 mode Ji-Ze Hong (Peter Hong)
2020-01-30 5:47 ` [PATCH V3 6/6] USB: serial: f81232: Add generator for F81534A Ji-Ze Hong (Peter Hong)
2020-02-25 11:23 ` Johan Hovold
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