[PATCH v4 3/5] i2c: qcom-geni: Load i2c qup Firmware from linux side

[Viken Dadhaniya]

Add provision to load firmware of Serial engine for I2C protocol from
Linux Execution Environment on running on APPS processor.

Co-developed-by: Mukesh Kumar Savaliya <quic_msavaliy@xxxxxxxxxxx>
Signed-off-by: Mukesh Kumar Savaliya <quic_msavaliy@xxxxxxxxxxx>
Signed-off-by: Viken Dadhaniya <quic_vdadhani@xxxxxxxxxxx>
---
Dependencies:

This patch depends on patch 2 of this series.

v3 - >v4:

- Add a patch dependency note.

v3 Link: https://lore.kernel.org/linux-arm-msm/20250303124349.3474185-8-quic_vdadhani@xxxxxxxxxxx/

v2 -> v3:

- Load firmware only if the protocol is invalid.

v2 Link: https://lore.kernel.org/linux-arm-msm/20250124105309.295769-7-quic_vdadhani@xxxxxxxxxxx/

v1 -> v2:

- No change.

v1 Link: https://lore.kernel.org/linux-arm-msm/20241204150326.1470749-6-quic_vdadhani@xxxxxxxxxxx/
---
---
 drivers/i2c/busses/i2c-qcom-geni.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
index ccea575fb783..97be9e468c75 100644
--- a/drivers/i2c/busses/i2c-qcom-geni.c
+++ b/drivers/i2c/busses/i2c-qcom-geni.c
@@ -870,7 +870,13 @@ static int geni_i2c_probe(struct platform_device *pdev)
 		goto err_clk;
 	}
 	proto = geni_se_read_proto(&gi2c->se);
-	if (proto != GENI_SE_I2C) {
+	if (proto == GENI_SE_INVALID_PROTO) {
+		ret = geni_load_se_firmware(&gi2c->se, GENI_SE_I2C);
+		if (ret) {
+			dev_err_probe(dev, ret, "i2c firmware load failed ret: %d\n", ret);
+			goto err_resources;
+		}
+	} else if (proto != GENI_SE_I2C) {
 		ret = dev_err_probe(dev, -ENXIO, "Invalid proto %d\n", proto);
 		goto err_resources;
 	}
-- 
2.34.1