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USB: serial: cp210x: drop shift macros 

Drop the macros used to shift the flow-control settings to make the code
more readable for consistency with the other requests.

Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Johan Hovold 2021-01-25 14:48:13 +01:00
parent 8cce3bbfb4
commit 568400b15a
1 changed files with 11 additions and 17 deletions
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28
drivers/usb/serial/cp210x.c
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@ -449,17 +449,14 @@ struct cp210x_flow_ctl {
/* cp210x_flow_ctl::ulControlHandshake */
#define CP210X_SERIAL_DTR_MASK GENMASK(1, 0)
#define CP210X_SERIAL_DTR_SHIFT(_mode) (_mode)
#define CP210X_SERIAL_DTR_INACTIVE (0 << 0)
#define CP210X_SERIAL_DTR_ACTIVE (1 << 0)
#define CP210X_SERIAL_DTR_FLOW_CTL (2 << 0)
#define CP210X_SERIAL_CTS_HANDSHAKE BIT(3)
#define CP210X_SERIAL_DSR_HANDSHAKE BIT(4)
#define CP210X_SERIAL_DCD_HANDSHAKE BIT(5)
#define CP210X_SERIAL_DSR_SENSITIVITY BIT(6)
/* values for cp210x_flow_ctl::ulControlHandshake::CP210X_SERIAL_DTR_MASK */
#define CP210X_SERIAL_DTR_INACTIVE 0
#define CP210X_SERIAL_DTR_ACTIVE 1
#define CP210X_SERIAL_DTR_FLOW_CTL 2
/* cp210x_flow_ctl::ulFlowReplace */
#define CP210X_SERIAL_AUTO_TRANSMIT BIT(0)
#define CP210X_SERIAL_AUTO_RECEIVE BIT(1)
@ -467,14 +464,11 @@ struct cp210x_flow_ctl {
#define CP210X_SERIAL_NULL_STRIPPING BIT(3)
#define CP210X_SERIAL_BREAK_CHAR BIT(4)
#define CP210X_SERIAL_RTS_MASK GENMASK(7, 6)
#define CP210X_SERIAL_RTS_SHIFT(_mode) (_mode << 6)
#define CP210X_SERIAL_RTS_INACTIVE (0 << 6)
#define CP210X_SERIAL_RTS_ACTIVE (1 << 6)
#define CP210X_SERIAL_RTS_FLOW_CTL (2 << 6)
#define CP210X_SERIAL_XOFF_CONTINUE BIT(31)
/* values for cp210x_flow_ctl::ulFlowReplace::CP210X_SERIAL_RTS_MASK */
#define CP210X_SERIAL_RTS_INACTIVE 0
#define CP210X_SERIAL_RTS_ACTIVE 1
#define CP210X_SERIAL_RTS_FLOW_CTL 2
/* CP210X_VENDOR_SPECIFIC, CP210X_GET_DEVICEMODE call reads these 0x2 bytes. */
struct cp210x_pin_mode {
u8 eci;
@ -1165,22 +1159,22 @@ static void cp210x_set_flow_control(struct tty_struct *tty,
ctl_hs &= ~CP210X_SERIAL_DSR_SENSITIVITY;
ctl_hs &= ~CP210X_SERIAL_DTR_MASK;
if (port_priv->dtr)
ctl_hs |= CP210X_SERIAL_DTR_SHIFT(CP210X_SERIAL_DTR_ACTIVE);
ctl_hs |= CP210X_SERIAL_DTR_ACTIVE;
else
ctl_hs |= CP210X_SERIAL_DTR_SHIFT(CP210X_SERIAL_DTR_INACTIVE);
ctl_hs |= CP210X_SERIAL_DTR_INACTIVE;
if (C_CRTSCTS(tty)) {
ctl_hs |= CP210X_SERIAL_CTS_HANDSHAKE;
flow_repl &= ~CP210X_SERIAL_RTS_MASK;
flow_repl |= CP210X_SERIAL_RTS_SHIFT(CP210X_SERIAL_RTS_FLOW_CTL);
flow_repl |= CP210X_SERIAL_RTS_FLOW_CTL;
port_priv->crtscts = true;
} else {
ctl_hs &= ~CP210X_SERIAL_CTS_HANDSHAKE;
flow_repl &= ~CP210X_SERIAL_RTS_MASK;
if (port_priv->rts)
flow_repl |= CP210X_SERIAL_RTS_SHIFT(CP210X_SERIAL_RTS_ACTIVE);
flow_repl |= CP210X_SERIAL_RTS_ACTIVE;
else
flow_repl |= CP210X_SERIAL_RTS_SHIFT(CP210X_SERIAL_RTS_INACTIVE);
flow_repl |= CP210X_SERIAL_RTS_INACTIVE;
port_priv->crtscts = false;
}