soc: qcom: ocmem: Add OCMEM hardware version print

It might be useful to know what hardware version of the OCMEM block the
SoC contains. Add a debug print for that.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230509-ocmem-hwver-v3-1-e51f3488e0f4@z3ntu.xyz

diff --git a/drivers/soc/qcom/ocmem.c b/drivers/soc/qcom/ocmem.c
index 199fe98..aaddc3c 100644 (file)
--- a/drivers/soc/qcom/ocmem.c
+++ b/drivers/soc/qcom/ocmem.c
@@ -76,6 +76,10 @@ struct ocmem {
 #define OCMEM_REG_GFX_MPU_START                        0x00001004
 #define OCMEM_REG_GFX_MPU_END                  0x00001008
 
+#define OCMEM_HW_VERSION_MAJOR(val)            FIELD_GET(GENMASK(31, 28), val)
+#define OCMEM_HW_VERSION_MINOR(val)            FIELD_GET(GENMASK(27, 16), val)
+#define OCMEM_HW_VERSION_STEP(val)             FIELD_GET(GENMASK(15, 0), val)
+
 #define OCMEM_HW_PROFILE_NUM_PORTS(val)                FIELD_PREP(0x0000000f, (val))
 #define OCMEM_HW_PROFILE_NUM_MACROS(val)       FIELD_PREP(0x00003f00, (val))
 
@@ -355,6 +359,12 @@ static int ocmem_dev_probe(struct platform_device *pdev)
                }
        }
 
+       reg = ocmem_read(ocmem, OCMEM_REG_HW_VERSION);
+       dev_dbg(dev, "OCMEM hardware version: %lu.%lu.%lu\n",
+               OCMEM_HW_VERSION_MAJOR(reg),
+               OCMEM_HW_VERSION_MINOR(reg),
+               OCMEM_HW_VERSION_STEP(reg));
+
        reg = ocmem_read(ocmem, OCMEM_REG_HW_PROFILE);
        ocmem->num_ports = OCMEM_HW_PROFILE_NUM_PORTS(reg);
        ocmem->num_macros = OCMEM_HW_PROFILE_NUM_MACROS(reg);