Re: [PATCH V2 2/8] soc: qcom: geni: Support for ICC voting

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Hi Matthias,

On 3/13/2020 10:12 PM, Matthias Kaehlcke wrote:
Hi Akash,

On Fri, Mar 13, 2020 at 06:42:08PM +0530, Akash Asthana wrote:
Add necessary macros and structure variables to support ICC BW
voting from individual SE drivers.

Signed-off-by: Akash Asthana <akashast@xxxxxxxxxxxxxx>
---
Changes in V2:
  - As per Bjorn's comment dropped enums for ICC paths, given the three
    paths individual members

  include/linux/qcom-geni-se.h | 28 ++++++++++++++++++++++++++++
  1 file changed, 28 insertions(+)

diff --git a/include/linux/qcom-geni-se.h b/include/linux/qcom-geni-se.h
index dd46494..eaae16e 100644
--- a/include/linux/qcom-geni-se.h
+++ b/include/linux/qcom-geni-se.h
@@ -6,6 +6,8 @@
  #ifndef _LINUX_QCOM_GENI_SE
  #define _LINUX_QCOM_GENI_SE
+#include <linux/interconnect.h>
+
  /* Transfer mode supported by GENI Serial Engines */
  enum geni_se_xfer_mode {
  	GENI_SE_INVALID,
@@ -33,6 +35,15 @@ struct clk;
   * @clk:		Handle to the core serial engine clock
   * @num_clk_levels:	Number of valid clock levels in clk_perf_tbl
   * @clk_perf_tbl:	Table of clock frequency input to serial engine clock
+ * @icc_path_geni_to_core:	ICC path handle for geni to core
+ * @icc_path_cpu_to_geni:	ICC path handle for cpu to geni
+ * @icc_path_geni_to_ddr:	ICC path handle for geni to ddr
+ * @avg_bw_core:	Average bus bandwidth value for QUP core 2x clock
+ * @peak_bw_core:	Peak bus bandwidth value for QUP core 2x clock
+ * @avg_bw_cpu:		Average bus bandwidth value for CPU
+ * @peak_bw_cpu:	Peak bus bandwidth value for CPU
+ * @avg_bw_ddr:		Average bus bandwidth value for DDR
+ * @peak_bw_ddr:	Peak bus bandwidth value for DDR
   */
  struct geni_se {
  	void __iomem *base;
@@ -41,6 +52,15 @@ struct geni_se {
  	struct clk *clk;
  	unsigned int num_clk_levels;
  	unsigned long *clk_perf_tbl;
+	struct icc_path *icc_path_geni_to_core;
+	struct icc_path *icc_path_cpu_to_geni;
+	struct icc_path *icc_path_geni_to_ddr;
+	unsigned int avg_bw_core;
+	unsigned int peak_bw_core;
+	unsigned int avg_bw_cpu;
+	unsigned int peak_bw_cpu;
+	unsigned int avg_bw_ddr;
+	unsigned int peak_bw_ddr;
Those are a lot of new individual struct members. How about clustering
them, e.g.:

struct geni_icc_path {
	struct icc_path *path;
	unsigned int avg_bw;
	unsigned int peak_bw;
};
I guess it would be better to add this structure  ICC driver as you suggested@https://patchwork.kernel.org/patch/11436905/.
struct geni_iccs_paths {
	struct geni_icc_path to_core;
	struct geni_icc_path from_cpu;
	struct geni_icc_path to_ddr;
};

And 'struct geni_se' just gets this entry:

	struct geni_icc_paths icc;

or alternatively three 'struct geni_icc_path' entries.

ok

Thanks for reviewing.

Regards

Akash

--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,\na Linux Foundation Collaborative Project



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