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@xxxxxxxxxxxxxxxx> Signed-off-by: Mukesh Kumar Savaliya <mukesh.savaliya@xxxxxxxxxxxxxxxx> Signed-off-by: Viken Dadhaniya <viken.dadhaniya@xxxxxxxxxxxxxxxx> --- Dependencies: This patch depends on patch 3 of this series. v5 -> v6: - No change. v5 Link: https://lore.kernel.org/linux-i2c/20250624095102.1587580-6-viken.dadhaniya@xxxxxxxxxxxxxxxx/ v4 -> v5: - Updated the email domain from 'quic' to 'oss'. v4 Link: https://lore.kernel.org/all/20250503111029.3583807-6-quic_vdadhani@xxxxxxxxxxx/ v3 -> v4: - Add a patch dependency note. v3 Link: https://lore.kernel.org/linux-arm-msm/20250303124349.3474185-10-quic_vdadhani@xxxxxxxxxxx/ v2 -> v3: - Load firmware only if the protocol is invalid. v2 Link: https://lore.kernel.org/linux-arm-msm/20250124105309.295769-9-quic_vdadhani@xxxxxxxxxxx/ v1 -> v2: - No change. v1 Link: https://lore.kernel.org/linux-arm-msm/20241204150326.1470749-8-quic_vdadhani@xxxxxxxxxxx/ --- --- 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 9c7b1cea7cfe..eba225be9b38 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -1179,7 +1179,13 @@ 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
