linux-kernel - [PATCH v1 7/7] serial: qcom-geni: Load UART qup Firmware from linux side

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Message-Id: <20241204150326.1470749-8-quic_vdadhani@quicinc.com>
Date: Wed,  4 Dec 2024 20:33:26 +0530
From: Viken Dadhaniya <quic_vdadhani@...cinc.com>
To: andi.shyti@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
        conor+dt@...nel.org, gregkh@...uxfoundation.org, jirislaby@...nel.org,
        broonie@...nel.or, andersson@...nel.org, konradybcio@...nel.org,
        johan+linaro@...nel.org, dianders@...omium.org, agross@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-i2c@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-serial@...r.kernel.org, linux-spi@...r.kernel.org
Cc: =quic_msavaliy@...cinc.com, quic_anupkulk@...cinc.com,
        Viken Dadhaniya <quic_vdadhani@...cinc.com>,
        Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
Subject: [PATCH v1 7/7] serial: qcom-geni: Load UART qup Firmware from linux side

Add provision to load firmware of Serial engine for UART protocol from
Linux Execution Environment on running on APPS processor.

Co-developed-by: Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
Signed-off-by: Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
Signed-off-by: Viken Dadhaniya <quic_vdadhani@...cinc.com>
---
 drivers/tty/serial/qcom_geni_serial.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index a80ce7aaf309..e3b0fc65f3bb 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -1146,8 +1146,11 @@ static int qcom_geni_serial_port_setup(struct uart_port *uport)
 
 	proto = geni_se_read_proto(&port->se);
 	if (proto != GENI_SE_UART) {
-		dev_err(uport->dev, "Invalid FW loaded, proto: %d\n", proto);
-		return -ENXIO;
+		ret = geni_load_se_firmware(&port->se, GENI_SE_UART);
+		if (ret) {
+			dev_err(uport->dev, "UART firmware load failed ret: %d\n", ret);
+			return ret;
+		}
 	}
 
 	qcom_geni_serial_stop_rx(uport);
-- 
2.34.1