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[83.9.30.53]) by smtp.gmail.com with ESMTPSA id w9-20020a05651204c900b004f85628ec34sm897120lfq.33.2023.07.28.10.46.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 28 Jul 2023 10:46:51 -0700 (PDT) Message-ID: Date: Fri, 28 Jul 2023 19:46:49 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 13/33] iris: vidc: add helper functions for power management Content-Language: en-US To: Vikash Garodia , stanimir.k.varbanov@gmail.com, agross@kernel.org, andersson@kernel.org, mchehab@kernel.org, hans.verkuil@cisco.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org Cc: quic_dikshita@quicinc.com References: <1690550624-14642-1-git-send-email-quic_vgarodia@quicinc.com> <1690550624-14642-14-git-send-email-quic_vgarodia@quicinc.com> From: Konrad Dybcio Autocrypt: addr=konrad.dybcio@linaro.org; keydata= xsFNBF9ALYUBEADWAhxdTBWrwAgDQQzc1O/bJ5O7b6cXYxwbBd9xKP7MICh5YA0DcCjJSOum BB/OmIWU6X+LZW6P88ZmHe+KeyABLMP5s1tJNK1j4ntT7mECcWZDzafPWF4F6m4WJOG27kTJ HGWdmtO+RvadOVi6CoUDqALsmfS3MUG5Pj2Ne9+0jRg4hEnB92AyF9rW2G3qisFcwPgvatt7 TXD5E38mLyOPOUyXNj9XpDbt1hNwKQfiidmPh5e7VNAWRnW1iCMMoKqzM1Anzq7e5Afyeifz zRcQPLaqrPjnKqZGL2BKQSZDh6NkI5ZLRhhHQf61fkWcUpTp1oDC6jWVfT7hwRVIQLrrNj9G MpPzrlN4YuAqKeIer1FMt8cq64ifgTzxHzXsMcUdclzq2LTk2RXaPl6Jg/IXWqUClJHbamSk t1bfif3SnmhA6TiNvEpDKPiT3IDs42THU6ygslrBxyROQPWLI9IL1y8S6RtEh8H+NZQWZNzm UQ3imZirlPjxZtvz1BtnnBWS06e7x/UEAguj7VHCuymVgpl2Za17d1jj81YN5Rp5L9GXxkV1 aUEwONM3eCI3qcYm5JNc5X+JthZOWsbIPSC1Rhxz3JmWIwP1udr5E3oNRe9u2LIEq+wH/toH kpPDhTeMkvt4KfE5m5ercid9+ZXAqoaYLUL4HCEw+HW0DXcKDwARAQABzShLb25yYWQgRHli Y2lvIDxrb25yYWQuZHliY2lvQGxpbmFyby5vcmc+wsGOBBMBCAA4FiEEU24if9oCL2zdAAQV R4cBcg5dfFgFAmQ5bqwCGwMFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AACgkQR4cBcg5dfFjO BQ//YQV6fkbqQCceYebGg6TiisWCy8LG77zV7DB0VMIWJv7Km7Sz0QQrHQVzhEr3trNenZrf yy+o2tQOF2biICzbLM8oyQPY8B///KJTWI2khoB8IJSJq3kNG68NjPg2vkP6CMltC/X3ohAo xL2UgwN5vj74QnlNneOjc0vGbtA7zURNhTz5P/YuTudCqcAbxJkbqZM4WymjQhe0XgwHLkiH 5LHSZ31MRKp/+4Kqs4DTXMctc7vFhtUdmatAExDKw8oEz5NbskKbW+qHjW1XUcUIrxRr667V GWH6MkVceT9ZBrtLoSzMLYaQXvi3sSAup0qiJiBYszc/VOu3RbIpNLRcXN3KYuxdQAptacTE mA+5+4Y4DfC3rUSun+hWLDeac9z9jjHm5rE998OqZnOU9aztbd6zQG5VL6EKgsVXAZD4D3RP x1NaAjdA3MD06eyvbOWiA5NSzIcC8UIQvgx09xm7dThCuQYJR4Yxjd+9JPJHI6apzNZpDGvQ BBZzvwxV6L1CojUEpnilmMG1ZOTstktWpNzw3G2Gis0XihDUef0MWVsQYJAl0wfiv/0By+XK mm2zRR+l/dnzxnlbgJ5pO0imC2w0TVxLkAp0eo0LHw619finad2u6UPQAkZ4oj++iIGrJkt5 Lkn2XgB+IW8ESflz6nDY3b5KQRF8Z6XLP0+IEdLOOARkOW7yEgorBgEEAZdVAQUBAQdAwmUx xrbSCx2ksDxz7rFFGX1KmTkdRtcgC6F3NfuNYkYDAQgHwsF2BBgBCAAgFiEEU24if9oCL2zd AAQVR4cBcg5dfFgFAmQ5bvICGwwACgkQR4cBcg5dfFju1Q//Xta1ShwL0MLSC1KL1lXGXeRM 8arzfyiB5wJ9tb9U/nZvhhdfilEDLe0jKJY0RJErbdRHsalwQCrtq/1ewQpMpsRxXzAjgfRN jc4tgxRWmI+aVTzSRpywNahzZBT695hMz81cVZJoZzaV0KaMTlSnBkrviPz1nIGHYCHJxF9r cIu0GSIyUjZ/7xslxdvjpLth16H27JCWDzDqIQMtg61063gNyEyWgt1qRSaK14JIH/DoYRfn jfFQSC8bffFjat7BQGFz4ZpRavkMUFuDirn5Tf28oc5ebe2cIHp4/kajTx/7JOxWZ80U70mA cBgEeYSrYYnX+UJsSxpzLc/0sT1eRJDEhI4XIQM4ClIzpsCIN5HnVF76UQXh3a9zpwh3dk8i bhN/URmCOTH+LHNJYN/MxY8wuukq877DWB7k86pBs5IDLAXmW8v3gIDWyIcgYqb2v8QO2Mqx YMqL7UZxVLul4/JbllsQB8F/fNI8AfttmAQL9cwo6C8yDTXKdho920W4WUR9k8NT/OBqWSyk bGqMHex48FVZhexNPYOd58EY9/7mL5u0sJmo+jTeb4JBgIbFPJCFyng4HwbniWgQJZ1WqaUC nas9J77uICis2WH7N8Bs9jy0wQYezNzqS+FxoNXmDQg2jetX8en4bO2Di7Pmx0jXA4TOb9TM izWDgYvmBE8= In-Reply-To: <1690550624-14642-14-git-send-email-quic_vgarodia@quicinc.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 28.07.2023 15:23, Vikash Garodia wrote: > From: Dikshita Agarwal > > this implements functions for calculating current load of the > hardware. Depending on the count of instances and > resolutions it selects the best clock rate for the video > core. Also it scales clocks, power and enable/disable dcvs. > > Signed-off-by: Dikshita Agarwal > Signed-off-by: Vikash Garodia > ---[...] > + > +/* TODO: Move to dtsi OR use source clock instead of branch clock.*/ > +#define MSM_VIDC_CLOCK_SOURCE_SCALING_RATIO 3 Seems unused in this patch. > + > +enum vidc_bus_type { > + PERF, > + DDR, > + LLCC, > +}; > + > +/* > + * Minimum dimensions for which to calculate bandwidth. > + * This means that anything bandwidth(0, 0) == > + * bandwidth(BASELINE_DIMENSIONS.width, BASELINE_DIMENSIONS.height) > + */ > +static const struct { > + int height, width; > +} BASELINE_DIMENSIONS = { > + .width = 1280, > + .height = 720, > +}; > + > +/* converts Mbps to bps (the "b" part can be bits or bytes based on context) */ if 'b', the multiplier must be 1024 or it makes no sense > +#define kbps(__mbps) ((__mbps) * 1000) > +#define bps(__mbps) (kbps(__mbps) * 1000) > + [...] > +void __dump(struct dump dump[], int len) > +{ > + int c = 0; > + > + for (c = 0; c < len; ++c) { > + char format_line[128] = "", formatted_line[128] = ""; That's a lot of bytes on the stack.. > + > + if (dump[c].val == DUMP_HEADER_MAGIC) { > + snprintf(formatted_line, sizeof(formatted_line), "%s\n", > + dump[c].key); > + } else { > + snprintf(format_line, sizeof(format_line), > + " %-35s: %s\n", dump[c].key, > + dump[c].format); > + snprintf(formatted_line, sizeof(formatted_line), > + format_line, dump[c].val); > + } > + d_vpr_b("%s", formatted_line); > + } > +} > + > +u64 msm_vidc_max_freq(struct msm_vidc_inst *inst) > +{ > + struct msm_vidc_core *core; > + struct frequency_table *freq_tbl; > + u64 freq = 0; > + > + core = inst->core; > + > + if (!core->resource || !core->resource->freq_set.freq_tbl || > + !core->resource->freq_set.count) { > + i_vpr_e(inst, "%s: invalid frequency table\n", __func__); > + return freq; > + } > + freq_tbl = core->resource->freq_set.freq_tbl; Do we need a separate freuqency table if we have OPP? [...] > + if (inst->power.fw_cf) { > + cf = inst->power.fw_cf; > + frame_size = (msm_vidc_get_mbs_per_frame(inst) / (32 * 8) * 3) / 2; too magic! Konrad