soc: qcom: geni-se: Add geni_icc_set_bw_ab() function

Add a new function geni_icc_set_bw_ab() that allows callers to set
average bandwidth values for all ICC (Interconnect) paths in a single
call. This function takes separate parameters for core, config, and DDR
average bandwidth values and applies them to the respective ICC paths.

This provides a more convenient API for drivers that need to configure
specific average bandwidth values.

Co-developed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
Tested-by: Mattijs Korpershoek <mkorpershoek@kernel.org>
Link: https://lore.kernel.org/r/20260227061544.1785978-3-praveen.talari@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c
index b6167b968ef60a16be074b386e0dfdeeba5dc321..b0542f83645370554db8c4c73c66ee083b4e49db 100644 (file)
--- a/drivers/soc/qcom/qcom-geni-se.c
+++ b/drivers/soc/qcom/qcom-geni-se.c
@@ -946,6 +946,28 @@ int geni_icc_set_bw(struct geni_se *se)
 }
 EXPORT_SYMBOL_GPL(geni_icc_set_bw);
 
+/**
+ * geni_icc_set_bw_ab() - Set average bandwidth for all ICC paths and apply
+ * @se:                Pointer to the concerned serial engine.
+ * @core_ab:   Average bandwidth in kBps for GENI_TO_CORE path.
+ * @cfg_ab:    Average bandwidth in kBps for CPU_TO_GENI path.
+ * @ddr_ab:    Average bandwidth in kBps for GENI_TO_DDR path.
+ *
+ * Sets bandwidth values for all ICC paths and applies them. DDR path is
+ * optional and only set if it exists.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+int geni_icc_set_bw_ab(struct geni_se *se, u32 core_ab, u32 cfg_ab, u32 ddr_ab)
+{
+       se->icc_paths[GENI_TO_CORE].avg_bw = core_ab;
+       se->icc_paths[CPU_TO_GENI].avg_bw = cfg_ab;
+       se->icc_paths[GENI_TO_DDR].avg_bw = ddr_ab;
+
+       return geni_icc_set_bw(se);
+}
+EXPORT_SYMBOL_GPL(geni_icc_set_bw_ab);
+
 void geni_icc_set_tag(struct geni_se *se, u32 tag)
 {
        int i;

diff --git a/include/linux/soc/qcom/geni-se.h b/include/linux/soc/qcom/geni-se.h
index 0a984e2579fe236572e6a8d5afa1dda0e7a469f4..980aabea2157849b6eb68ca0e57266ddece78a1d 100644 (file)
--- a/include/linux/soc/qcom/geni-se.h
+++ b/include/linux/soc/qcom/geni-se.h
@@ -528,6 +528,7 @@ void geni_se_rx_dma_unprep(struct geni_se *se, dma_addr_t iova, size_t len);
 int geni_icc_get(struct geni_se *se, const char *icc_ddr);
 
 int geni_icc_set_bw(struct geni_se *se);
+int geni_icc_set_bw_ab(struct geni_se *se, u32 core_ab, u32 cfg_ab, u32 ddr_ab);
 void geni_icc_set_tag(struct geni_se *se, u32 tag);
 
 int geni_icc_enable(struct geni_se *se);