[PATCH 4/6] soc: qcom: geni-se: Define the QSPI firmware protocol

[Jyothi Kumar Seerapu]

Add GENI_SE_QSPI with firmware protocol ID 9. The GENI SPI driver uses
this value to request QSPI firmware and validate the protocol running
on a serial engine.

Extend the firmware loader's protocol-name table to accept QSPI.
Reject unused protocol IDs in the sparse table before looking up
firmware.

Signed-off-by: Jyothi Kumar Seerapu <jyothi.seerapu@xxxxxxxxxxxxxxxx>
---
 drivers/soc/qcom/qcom-geni-se.c  | 7 +++++--
 include/linux/soc/qcom/geni-se.h | 1 +
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c
index 873bfbd6b2b7..396f3d81d292 100644
--- a/drivers/soc/qcom/qcom-geni-se.c
+++ b/drivers/soc/qcom/qcom-geni-se.c
@@ -122,7 +122,10 @@ struct geni_se_desc {
 static const char * const icc_path_names[] = {"qup-core", "qup-config",
 						"qup-memory"};
 
-static const char * const protocol_name[] = { "None", "SPI", "UART", "I2C", "I3C", "SPI SLAVE" };
+static const char * const protocol_name[] = {
+	"None", "SPI", "UART", "I2C", "I3C", "SPI SLAVE",
+	[GENI_SE_QSPI] = "QSPI",
+};
 
 /**
  * struct se_fw_hdr - Serial Engine firmware configuration header
@@ -1557,7 +1560,7 @@ int geni_load_se_firmware(struct geni_se *se, enum geni_se_protocol_type protoco
 	enum geni_se_xfer_mode mode = GENI_SE_FIFO;
 	int ret;
 
-	if (protocol >= ARRAY_SIZE(protocol_name)) {
+	if (protocol >= ARRAY_SIZE(protocol_name) || !protocol_name[protocol]) {
 		dev_err(se->dev, "Invalid geni-se protocol: %d", protocol);
 		return -EINVAL;
 	}
diff --git a/include/linux/soc/qcom/geni-se.h b/include/linux/soc/qcom/geni-se.h
index 29a53bbc0dd4..e96266631ae1 100644
--- a/include/linux/soc/qcom/geni-se.h
+++ b/include/linux/soc/qcom/geni-se.h
@@ -37,6 +37,7 @@ enum geni_se_protocol_type {
 	GENI_SE_I2C,
 	GENI_SE_I3C,
 	GENI_SE_SPI_SLAVE,
+	GENI_SE_QSPI = 9,
 	GENI_SE_INVALID_PROTO = 255,
 };
 

-- 
2.34.1