From: Matthias Kaehlcke <mka@chromium.org>
To: Akash Asthana <akashast@codeaurora.org>
Cc: gregkh@linuxfoundation.org, agross@kernel.org,
bjorn.andersson@linaro.org, wsa@the-dreams.de,
broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org,
georgi.djakov@linaro.org, linux-i2c@vger.kernel.org,
linux-spi@vger.kernel.org, devicetree@vger.kernel.org,
swboyd@chromium.org, mgautam@codeaurora.org,
linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org,
dianders@chromium.org, evgreen@chromium.org
Subject: Re: [PATCH V3 2/8] soc: qcom: geni: Support for ICC voting
Date: Tue, 31 Mar 2020 10:52:07 -0700 [thread overview]
Message-ID: <20200331175207.GG199755@google.com> (raw)
In-Reply-To: <1585652976-17481-3-git-send-email-akashast@codeaurora.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 <akashast@codeaurora.org>
> ---
> 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@chromium.org>
next prev parent reply other threads:[~2020-03-31 17:52 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-31 11:09 [PATCH V3 0/8] Add interconnect support to QSPI and QUP drivers Akash Asthana
2020-03-31 11:09 ` [PATCH V3 1/8] interconnect: Add devm_of_icc_get() as exported API for users Akash Asthana
2020-03-31 11:09 ` [PATCH V3 2/8] soc: qcom: geni: Support for ICC voting Akash Asthana
2020-03-31 17:52 ` Matthias Kaehlcke [this message]
2020-04-02 13:46 ` Akash Asthana
2020-03-31 23:32 ` Bjorn Andersson
2020-04-01 16:26 ` Evan Green
2020-04-07 6:46 ` Akash Asthana
2020-04-07 9:58 ` Georgi Djakov
2020-04-08 11:13 ` Akash Asthana
2020-04-07 6:45 ` Akash Asthana
2020-04-07 22:07 ` Bjorn Andersson
2020-03-31 11:09 ` [PATCH V3 3/8] soc: qcom-geni-se: Add interconnect support to fix earlycon crash Akash Asthana
2020-03-31 18:24 ` Matthias Kaehlcke
2020-04-01 19:46 ` Matthias Kaehlcke
2020-04-07 6:52 ` Akash Asthana
2020-04-07 11:34 ` Akash Asthana
2020-04-07 17:26 ` Matthias Kaehlcke
2020-04-08 11:38 ` Akash Asthana
2020-04-08 17:09 ` Matthias Kaehlcke
2020-03-31 11:09 ` [PATCH V3 4/8] i2c: i2c-qcom-geni: Add interconnect support Akash Asthana
2020-03-31 18:49 ` Matthias Kaehlcke
2020-04-07 7:04 ` Akash Asthana
2020-03-31 11:09 ` [PATCH V3 5/8] spi: spi-geni-qcom: " Akash Asthana
2020-03-31 19:02 ` Matthias Kaehlcke
2020-04-07 7:11 ` Akash Asthana
2020-03-31 11:09 ` [PATCH V3 6/8] tty: serial: qcom_geni_serial: " Akash Asthana
2020-03-31 19:39 ` Matthias Kaehlcke
2020-04-07 9:19 ` Akash Asthana
2020-04-07 9:40 ` Akash Asthana
2020-03-31 11:09 ` [PATCH V3 7/8] spi: spi-qcom-qspi: " Akash Asthana
2020-03-31 11:23 ` Mark Brown
2020-04-07 9:54 ` Akash Asthana
2020-04-07 10:55 ` Mark Brown
2020-04-08 12:17 ` Akash Asthana
2020-04-09 13:17 ` Georgi Djakov
2020-04-09 13:20 ` Mark Brown
2020-04-15 10:34 ` Georgi Djakov
[not found] ` <eca0e6a7-effe-022c-e90e-c0672991251d@codeaurora.org>
2020-04-15 10:54 ` Georgi Djakov
2020-03-31 19:45 ` Matthias Kaehlcke
2020-03-31 11:09 ` [PATCH V3 8/8] arm64: dts: sc7180: Add interconnect for QUP and QSPI Akash Asthana
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