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Message-ID: <20240902152451.862-6-johan+linaro@kernel.org>
Date: Mon, 2 Sep 2024 17:24:48 +0200
From: Johan Hovold <johan+linaro@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Jiri Slaby <jirislaby@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>,
Douglas Anderson <dianders@...omium.org>,
'NĂcolas F . R . A . Prado' <nfraprado@...labora.com>,
linux-arm-msm@...r.kernel.org,
linux-serial@...r.kernel.org,
linux-kernel@...r.kernel.org,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 5/8] serial: qcom-geni: introduce qcom_geni_serial_poll_bitfield()
From: Douglas Anderson <dianders@...omium.org>
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 <dianders@...omium.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
Link: https://lore.kernel.org/r/20240610152420.v4.5.Ic6411eab8d9d37acc451705f583fb535cd6dadb2@changeid
Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
drivers/tty/serial/qcom_geni_serial.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 4625a2e5ebfb..7029c39a9a21 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;
@@ -294,7 +294,7 @@ 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;
@@ -302,6 +302,12 @@ 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;
--
2.44.2
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