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charset=utf-8 Content-Disposition: inline In-Reply-To: <1585652976-17481-3-git-send-email-akashast@codeaurora.org> User-Agent: Mutt/1.12.2 (2019-09-21) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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 > --- > 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