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 V2 2/7] USB: serial: f81232: Add tx_empty function
Date: Mon, 23 Sep 2019 10:24:44 +0800 [thread overview]
Message-ID: <20190923022449.10952-3-hpeter+linux_kernel@gmail.com> (raw)
In-Reply-To: <20190923022449.10952-1-hpeter+linux_kernel@gmail.com>
Add tx_empty() function for F81232.
Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
---
drivers/usb/serial/f81232.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index c07d376c743d..b42b3738a768 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -685,6 +685,23 @@ static void f81232_dtr_rts(struct usb_serial_port *port, int on)
f81232_set_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS);
}
+static bool f81232_tx_empty(struct usb_serial_port *port)
+{
+ int status;
+ u8 tmp;
+
+ status = f81232_get_register(port, LINE_STATUS_REGISTER, &tmp);
+ if (status) {
+ dev_err(&port->dev, "get LSR status failed: %d\n", status);
+ return false;
+ }
+
+ if ((tmp & UART_LSR_TEMT) != UART_LSR_TEMT)
+ return false;
+
+ return true;
+}
+
static int f81232_carrier_raised(struct usb_serial_port *port)
{
u8 msr;
@@ -820,6 +837,7 @@ static struct usb_serial_driver f81232_device = {
.tiocmget = f81232_tiocmget,
.tiocmset = f81232_tiocmset,
.tiocmiwait = usb_serial_generic_tiocmiwait,
+ .tx_empty = f81232_tx_empty,
.process_read_urb = f81232_process_read_urb,
.read_int_callback = f81232_read_int_callback,
.port_probe = f81232_port_probe,
--
2.17.1
next prev parent reply other threads:[~2019-09-23 2:25 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-23 2:24 [PATCH V2 0/7] Add Fintek F81534A series usb-to-serial driver Ji-Ze Hong (Peter Hong)
2019-09-23 2:24 ` [PATCH V2 1/7] USB: serial: f81232: Extract LSR handler Ji-Ze Hong (Peter Hong)
2019-10-23 9:23 ` Johan Hovold
2019-09-23 2:24 ` Ji-Ze Hong (Peter Hong) [this message]
2019-10-23 9:15 ` [PATCH V2 2/7] USB: serial: f81232: Add tx_empty function Johan Hovold
2019-09-23 2:24 ` [PATCH V2 3/7] USB: serial: f81232: Use devm_kzalloc Ji-Ze Hong (Peter Hong)
2019-09-23 2:24 ` [PATCH V2 4/7] USB: serial: f81232: Add F81534A support Ji-Ze Hong (Peter Hong)
2019-10-23 9:59 ` Johan Hovold
2019-09-23 2:24 ` [PATCH V2 5/7] USB: serial: f81232: Set F81534A serial port with RS232 mode Ji-Ze Hong (Peter Hong)
2019-10-23 11:53 ` Johan Hovold
2019-10-24 8:52 ` Ji-Ze Hong (Peter Hong)
2020-01-08 14:35 ` Johan Hovold
[not found] ` <3c79f786-de34-550e-3964-d7fb334f6d56@gmail.com>
2020-01-13 15:17 ` Johan Hovold
2020-01-14 1:08 ` Ji-Ze Hong (Peter Hong)
2019-09-23 2:24 ` [PATCH V2 6/7] USB: serial: f81232: Add generator for F81534A Ji-Ze Hong (Peter Hong)
2019-10-23 12:05 ` Johan Hovold
2019-10-23 12:25 ` Johan Hovold
2019-09-23 2:24 ` [PATCH V2 7/7] USB: serial: f81232: Add gpiolib to GPIO device Ji-Ze Hong (Peter Hong)
2019-10-23 12:22 ` Johan Hovold
2019-10-30 2:00 ` Ji-Ze Hong (Peter Hong)
2020-01-08 14:46 ` Johan Hovold
2020-01-09 2:43 ` Ji-Ze Hong (Peter Hong)
2020-01-13 15:24 ` Johan Hovold
2019-10-23 9:21 ` [PATCH V2 0/7] Add Fintek F81534A series usb-to-serial driver Johan Hovold
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