linux-kernel - Re: [v5, 2/3] interconnect: qcom: Add SC7180 interconnect provider driver

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Message-ID: <cdd73fe7-c7e4-d035-d1dd-be4f1b9c142c@linaro.org>
Date:   Tue, 10 Mar 2020 17:35:41 +0200
From:   Georgi Djakov <georgi.djakov@...aro.org>
To:     Evan Green <evgreen@...gle.com>,
        Odelu Kukatla <okukatla@...eaurora.org>
Cc:     David Dai <daidavid1@...eaurora.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        linux-pm@...r.kernel.org, sboyd@...nel.org,
        Lina Iyer <ilina@...eaurora.org>,
        Sean Sweeney <seansw@....qualcomm.com>,
        Alex Elder <elder@...aro.org>,
        linux-arm-msm-owner@...r.kernel.org
Subject: Re: [v5, 2/3] interconnect: qcom: Add SC7180 interconnect provider
 driver

On 3/9/20 19:33, Evan Green wrote:
> On Tue, Mar 3, 2020 at 5:18 AM Odelu Kukatla <okukatla@...eaurora.org> wrote:
>>
>> Add driver for the Qualcomm interconnect buses found in SC7180 based
>> platforms. The topology consists of several NoCs that are controlled by
>> a remote processor that collects the aggregated bandwidth for each
>> master-slave pairs.
>>
>> Signed-off-by: Odelu Kukatla <okukatla@...eaurora.org>
>> ---
>>  drivers/interconnect/qcom/Kconfig  |  10 +
>>  drivers/interconnect/qcom/Makefile |   2 +
>>  drivers/interconnect/qcom/sc7180.c | 641 +++++++++++++++++++++++++++++++++++++
>>  drivers/interconnect/qcom/sc7180.h | 149 +++++++++
>>  4 files changed, 802 insertions(+)
>>  create mode 100644 drivers/interconnect/qcom/sc7180.c
>>  create mode 100644 drivers/interconnect/qcom/sc7180.h
>>
>> diff --git a/drivers/interconnect/qcom/Kconfig b/drivers/interconnect/qcom/Kconfig
>> index f6418a6..482c5be 100644
>> --- a/drivers/interconnect/qcom/Kconfig
>> +++ b/drivers/interconnect/qcom/Kconfig
>> @@ -42,6 +42,16 @@ config INTERCONNECT_QCOM_RPMH
>>         depends on INTERCONNECT_QCOM || COMPILE_TEST
>>         depends on QCOM_COMMAND_DB
>>
>> +config INTERCONNECT_QCOM_SC7180
>> +       tristate "Qualcomm SC7180 interconnect driver"
>> +       depends on INTERCONNECT_QCOM
>> +       depends on (QCOM_RPMH && QCOM_COMMAND_DB && OF) || COMPILE_TEST
>> +       select INTERCONNECT_QCOM_RPMH
>> +       select INTERCONNECT_QCOM_BCM_VOTER
>> +       help
>> +         This is a driver for the Qualcomm Network-on-Chip on sc7180-based
>> +         platforms.
>> +
>>  config INTERCONNECT_QCOM_SDM845
>>         tristate "Qualcomm SDM845 interconnect driver"
>>         depends on INTERCONNECT_QCOM
>> diff --git a/drivers/interconnect/qcom/Makefile b/drivers/interconnect/qcom/Makefile
>> index d591bb5..5325558 100644
>> --- a/drivers/interconnect/qcom/Makefile
>> +++ b/drivers/interconnect/qcom/Makefile
>> @@ -5,6 +5,7 @@ qnoc-msm8916-objs                       := msm8916.o
>>  qnoc-msm8974-objs                      := msm8974.o
>>  qnoc-qcs404-objs                       := qcs404.o
>>  icc-rpmh-obj                           := icc-rpmh.o
>> +qnoc-sc7180-objs                       := sc7180.o
>>  qnoc-sdm845-objs                       := sdm845.o
>>  icc-smd-rpm-objs                       := smd-rpm.o
>>
>> @@ -13,5 +14,6 @@ obj-$(CONFIG_INTERCONNECT_QCOM_MSM8916) += qnoc-msm8916.o
>>  obj-$(CONFIG_INTERCONNECT_QCOM_MSM8974) += qnoc-msm8974.o
>>  obj-$(CONFIG_INTERCONNECT_QCOM_QCS404) += qnoc-qcs404.o
>>  obj-$(CONFIG_INTERCONNECT_QCOM_RPMH) += icc-rpmh.o
>> +obj-$(CONFIG_INTERCONNECT_QCOM_SC7180) += qnoc-sc7180.o
>>  obj-$(CONFIG_INTERCONNECT_QCOM_SDM845) += qnoc-sdm845.o
>>  obj-$(CONFIG_INTERCONNECT_QCOM_SMD_RPM) += icc-smd-rpm.o
>> diff --git a/drivers/interconnect/qcom/sc7180.c b/drivers/interconnect/qcom/sc7180.c
>> new file mode 100644
>> index 0000000..dcf493d
>> --- /dev/null
>> +++ b/drivers/interconnect/qcom/sc7180.c
>> @@ -0,0 +1,641 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Copyright (c) 2020, The Linux Foundation. All rights reserved.
>> + *
>> + */
>> +
>> +#include <linux/device.h>
>> +#include <linux/interconnect.h>
>> +#include <linux/interconnect-provider.h>
>> +#include <linux/module.h>
>> +#include <linux/of_platform.h>
> 
> Nit: As Georgi mentioned in the previous review, you can remove this
> an replace it with of_device.h. No need to spin for just that, though.

I have already applied this version, so any follow-up patches are welcome.

Thanks,
Georgi