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 <mukesh.savaliya@oss.qualcomm.com>
Signed-off-by: Mukesh Kumar Savaliya <mukesh.savaliya@oss.qualcomm.com>
Signed-off-by: Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>
---
Dependencies:
This patch depends on patch 3 of this series.
v6 -> v7:
- No change.
v6 Link: https://lore.kernel.org/all/20250822072651.510027-7-viken.dadhaniya@oss.qualcomm.com/
v5 -> v6:
- No change.
v5 Link: https://lore.kernel.org/linux-i2c/20250624095102.1587580-6-viken.dadhaniya@oss.qualcomm.com/
v4 -> v5:
- Updated the email domain from 'quic' to 'oss'.
v4 Link: https://lore.kernel.org/all/20250503111029.3583807-6-quic_vdadhani@quicinc.com/
v3 -> v4:
- Add a patch dependency note.
v3 Link: https://lore.kernel.org/linux-arm-msm/20250303124349.3474185-10-quic_vdadhani@quicinc.com/
v2 -> v3:
- Load firmware only if the protocol is invalid.
v2 Link: https://lore.kernel.org/linux-arm-msm/20250124105309.295769-9-quic_vdadhani@quicinc.com/
v1 -> v2:
- No change.
v1 Link: https://lore.kernel.org/linux-arm-msm/20241204150326.1470749-8-quic_vdadhani@quicinc.com/
---
---
drivers/tty/serial/qcom_geni_serial.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 0fdda3a1e70b..ce5cb97d60a7 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -1184,7 +1184,13 @@ static int qcom_geni_serial_port_setup(struct uart_port *uport)
int ret;
proto = geni_se_read_proto(&port->se);
- if (proto != GENI_SE_UART) {
+ if (proto == GENI_SE_INVALID_PROTO) {
+ 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;
+ }
+ } else if (proto != GENI_SE_UART) {
dev_err(uport->dev, "Invalid FW loaded, proto: %d\n", proto);
return -ENXIO;
}
--
2.34.1