Hi Akash,
On Tue, Mar 31, 2020 at 04:39:30PM +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
>
> Changes in V3:
> - Add geni_icc_get, geni_icc_vote_on and geni_icc_vote_off as helper API.
> - Add geni_icc_path structure in common header
>
> drivers/soc/qcom/qcom-geni-se.c | 98 +++++++++++++++++++++++++++++++++++++++++
> include/linux/qcom-geni-se.h | 36 +++++++++++++++
> 2 files changed, 134 insertions(+)
>
> diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c
> index 7d622ea..9344c14 100644
> --- a/drivers/soc/qcom/qcom-geni-se.c
> +++ b/drivers/soc/qcom/qcom-geni-se.c
> @@ -720,6 +720,104 @@ void geni_se_rx_dma_unprep(struct geni_se *se, dma_addr_t iova, size_t len)
> }
> EXPORT_SYMBOL(geni_se_rx_dma_unprep);
>
> +int geni_icc_get(struct geni_se *se, const char *icc_core, const char *icc_cpu,
> + const char *icc_ddr)
> +{
> + if (icc_core) {
> + se->to_core.path = devm_of_icc_get(se->dev, "qup-core");
> + if (IS_ERR(se->to_core.path))
> + return PTR_ERR(se->to_core.path);
> + }
> +
> + if (icc_cpu) {
> + se->from_cpu.path = devm_of_icc_get(se->dev, "qup-config");
> + if (IS_ERR(se->from_cpu.path))
> + return PTR_ERR(se->from_cpu.path);
> + }
> +
> + if (icc_ddr) {
> + se->to_ddr.path = devm_of_icc_get(se->dev, "qup-memory");
> + if (IS_ERR(se->to_ddr.path))
> + return PTR_ERR(se->to_ddr.path);
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(geni_icc_get);
> +
> +int geni_icc_vote_on(struct geni_se *se)
> +{
> + int ret;
> +
> + if (se->to_core.path) {
> + ret = icc_set_bw(se->to_core.path, se->to_core.avg_bw,
> + se->to_core.peak_bw);
> + if (ret) {
> + dev_err_ratelimited(se->dev, "%s: ICC BW voting failed for core\n",
> + __func__);
> + return ret;
> + }
> + }
> +
> + if (se->from_cpu.path) {
> + ret = icc_set_bw(se->from_cpu.path, se->from_cpu.avg_bw,
> + se->from_cpu.peak_bw);
> + if (ret) {
> + dev_err_ratelimited(se->dev, "%s: ICC BW voting failed for cpu\n",
> + __func__);
> + return ret;
> + }
> + }
> +
> + if (se->to_ddr.path) {
> + ret = icc_set_bw(se->to_ddr.path, se->to_ddr.avg_bw,
> + se->to_ddr.peak_bw);
> + if (ret) {
> + dev_err_ratelimited(se->dev, "%s: ICC BW voting failed for ddr\n",
> + __func__);
> + return ret;
> + }
> + }
With an array of 'struct geni_icc_path' pointers the above could be
reduced to:
for (i = 0; i < ARRAY_SIZE(se->icc_paths); i++) {
if (!se->icc_paths[i])
continue;
ret = icc_set_bw(se->icc_paths[i]->path, se->icc_paths[i]->avg_bw,
se->icc_paths[i]->peak_bw);
if (ret) {
dev_err_ratelimited(se->dev, "%s: ICC BW voting failed\n",
__func__);
return ret;
}
}
similar for geni_icc_vote_off()
It's just a suggestion, looks also good to me as is.
Reviewed-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
