From: Roja Rani Yarubandi <rojay@codeaurora.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: akashast@codeaurora.org, msavaliy@qti.qualcomm.com,
mgautam@codeaurora.org, skakit@codeaurora.org,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Jiri Slaby <jslaby@suse.com>,
linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org,
linux-kernel@vger.kernel.org,
Roja Rani Yarubandi <rojay@codeaurora.org>
Subject: [PATCH 1/1] tty: serial: qcom_geni_serial: Configure UART_IO_MACRO_CTRL register
Date: Thu, 23 Jan 2020 18:11:50 +0530 [thread overview]
Message-ID: <20200123124150.19176-2-rojay@codeaurora.org> (raw)
In-Reply-To: <20200123124150.19176-1-rojay@codeaurora.org>
Configure UART_IO_MACRO_CTRL register if UART lines are swapped.
Signed-off-by: Roja Rani Yarubandi <rojay@codeaurora.org>
---
drivers/tty/serial/qcom_geni_serial.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index ff63728a95f4..68b11b6ad3be 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -24,6 +24,7 @@
/* UART specific GENI registers */
#define SE_UART_LOOPBACK_CFG 0x22c
+#define SE_UART_IO_MACRO_CTRL 0x240
#define SE_UART_TX_TRANS_CFG 0x25c
#define SE_UART_TX_WORD_LEN 0x268
#define SE_UART_TX_STOP_BIT_LEN 0x26c
@@ -1260,6 +1261,7 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
int irq;
bool console = false;
struct uart_driver *drv;
+ u32 val;
if (of_device_is_compatible(pdev->dev.of_node, "qcom,geni-debug-uart"))
console = true;
@@ -1309,6 +1311,10 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
return irq;
uport->irq = irq;
+ ret = of_property_read_u32(pdev->dev.of_node, "qcom,pin_inverse", &val);
+ if (!ret)
+ writel(val, uport->membase + SE_UART_IO_MACRO_CTRL);
+
irq_set_status_flags(uport->irq, IRQ_NOAUTOEN);
ret = devm_request_irq(uport->dev, uport->irq, qcom_geni_serial_isr,
IRQF_TRIGGER_HIGH, port->name, uport);
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of the Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2020-01-23 12:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-23 12:41 [PATCH 0/1] tty: serial: qcom_geni_serial: Configure UART_IO_MACRO_CTRL register Roja Rani Yarubandi
2020-01-23 12:41 ` Roja Rani Yarubandi [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-01-23 8:41 Roja Rani Yarubandi
2020-01-23 8:41 ` [PATCH 1/1] " Roja Rani Yarubandi
2020-01-23 9:30 ` Greg Kroah-Hartman
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