[v2,5/8] serial: qcom-geni: introduce qcom_geni_serial_poll_bitfield()

Commit Message

Johan Hovold Sept. 6, 2024, 1:13 p.m. UTC

From: Douglas Anderson <[e-mail]>

With a small modification the qcom_geni_serial_poll_bit() function
could be used to poll more than just a single bit. Let's generalize
it. We'll make the qcom_geni_serial_poll_bit() into just a wrapper of
the general function.

Signed-off-by: Douglas Anderson <[e-mail]>
Reviewed-by: Konrad Dybcio <[e-mail]>
Link: https://lore.kernel.org/r/20240610152420.v4.5.Ic6411eab8d9d37acc451705f583fb535cd6dadb2@changeid
Tested-by: Nícolas F. R. A. Prado <[e-mail]>
Signed-off-by: Johan Hovold <[e-mail]>
---
 drivers/tty/serial/qcom_geni_serial.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

Patch

diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 54052c68555d..7bbd70c30620 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -265,8 +265,8 @@  static bool qcom_geni_serial_secondary_active(struct uart_port *uport)
 	return readl(uport->membase + SE_GENI_STATUS) & S_GENI_CMD_ACTIVE;
 }
 
-static bool qcom_geni_serial_poll_bit(struct uart_port *uport,
-				      unsigned int offset, u32 field, bool set)
+static bool qcom_geni_serial_poll_bitfield(struct uart_port *uport,
+					   unsigned int offset, u32 field, u32 val)
 {
 	u32 reg;
 	struct qcom_geni_serial_port *port;
@@ -286,7 +286,7 @@  static bool qcom_geni_serial_poll_bit(struct uart_port *uport,
 	timeout_us = DIV_ROUND_UP(timeout_us, 10) * 10;
 	while (timeout_us) {
 		reg = readl(uport->membase + offset);
-		if ((bool)(reg & field) == set)
+		if ((reg & field) == val)
 			return true;
 		udelay(10);
 		timeout_us -= 10;
@@ -294,6 +294,12 @@  static bool qcom_geni_serial_poll_bit(struct uart_port *uport,
 	return false;
 }
 
+static bool qcom_geni_serial_poll_bit(struct uart_port *uport,
+				      unsigned int offset, u32 field, bool set)
+{
+	return qcom_geni_serial_poll_bitfield(uport, offset, field, set ? field : 0);
+}
+
 static void qcom_geni_serial_setup_tx(struct uart_port *uport, u32 xmit_size)
 {
 	u32 m_cmd;