linux-kernel - Re: [PATCH 3/3] remoteproc: qcom_q6v5

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Date: Thu, 8 Feb 2024 16:08:55 +0530
From: Sibi Sankar <quic_sibis@...cinc.com>
To: Abel Vesa <abel.vesa@...aro.org>,
        Dmitry Baryshkov
	<dmitry.baryshkov@...aro.org>
CC: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konrad.dybcio@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob
 Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-remoteproc@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] remoteproc: qcom_q6v5_pas: Unload lite firmware on
 ADSP



On 1/31/24 15:00, Abel Vesa wrote:
> On 24-01-29 17:17:28, Dmitry Baryshkov wrote:
>> On Mon, 29 Jan 2024 at 15:35, Abel Vesa <abel.vesa@...aro.org> wrote:
>>>
>>> From: Sibi Sankar <quic_sibis@...cinc.com>
>>>
>>> The UEFI loads a lite variant of the ADSP firmware to support charging
>>> use cases. The kernel needs to unload and reload it with the firmware
>>> that has full feature support for audio. This patch arbitarily shutsdown
>>> the lite firmware before loading the full firmware.
>>>
>>> Signed-off-by: Sibi Sankar <quic_sibis@...cinc.com>
>>> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
>>> ---
>>>   drivers/remoteproc/qcom_q6v5_pas.c | 8 ++++++++
>>>   1 file changed, 8 insertions(+)
>>>
>>> diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
>>> index 083d71f80e5c..4f6940368eb4 100644
>>> --- a/drivers/remoteproc/qcom_q6v5_pas.c
>>> +++ b/drivers/remoteproc/qcom_q6v5_pas.c
>>> @@ -39,6 +39,7 @@ struct adsp_data {
>>>          const char *dtb_firmware_name;
>>>          int pas_id;
>>>          int dtb_pas_id;
>>> +       int lite_pas_id;
>>>          unsigned int minidump_id;
>>>          bool auto_boot;
>>>          bool decrypt_shutdown;
>>> @@ -72,6 +73,7 @@ struct qcom_adsp {
>>>          const char *dtb_firmware_name;
>>>          int pas_id;
>>>          int dtb_pas_id;
>>> +       int lite_pas_id;
>>>          unsigned int minidump_id;
>>>          int crash_reason_smem;
>>>          bool decrypt_shutdown;
>>> @@ -210,6 +212,10 @@ static int adsp_load(struct rproc *rproc, const struct firmware *fw)
>>>          /* Store firmware handle to be used in adsp_start() */
>>>          adsp->firmware = fw;
>>>
>>> +       /* WIP: Shutdown the ADSP if it's running a lite version of the firmware*/
>>
>> Why is it still marked as WIP?
> 
> AFAIU, there was more to be done here w.r.t. preloaded lite version
> firmware.
> 
> Later, was agreed that that is not case.
> 
> So maybe I just need to drop the comment.
> 
> Sibi, can you confirm?

ack, this is the best we can currently do. Please drop the comment when
you re-spin the series. Thanks for sending this out.

-Sibi

> 
>>
>>> +       if (adsp->lite_pas_id)
>>> +               ret = qcom_scm_pas_shutdown(adsp->lite_pas_id);
>>> +
>>>          if (adsp->dtb_pas_id) {
>>>                  ret = request_firmware(&adsp->dtb_firmware, adsp->dtb_firmware_name, adsp->dev);
>>>                  if (ret) {
>>> @@ -693,6 +699,7 @@ static int adsp_probe(struct platform_device *pdev)
>>>          adsp->rproc = rproc;
>>>          adsp->minidump_id = desc->minidump_id;
>>>          adsp->pas_id = desc->pas_id;
>>> +       adsp->lite_pas_id = desc->lite_pas_id;
>>>          adsp->info_name = desc->sysmon_name;
>>>          adsp->decrypt_shutdown = desc->decrypt_shutdown;
>>>          adsp->region_assign_idx = desc->region_assign_idx;
>>> @@ -990,6 +997,7 @@ static const struct adsp_data x1e80100_adsp_resource = {
>>>          .dtb_firmware_name = "adsp_dtb.mdt",
>>>          .pas_id = 1,
>>>          .dtb_pas_id = 0x24,
>>> +       .lite_pas_id = 0x1f,
>>>          .minidump_id = 5,
>>>          .auto_boot = true,
>>>          .proxy_pd_names = (char*[]){
>>>
>>> --
>>> 2.34.1
>>>
>>>
>>
>>
>> -- 
>> With best wishes
>> Dmitry