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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id u13-20020a056870f28d00b001048b819e13sm21166966oap.8.2022.07.06.19.53.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Jul 2022 19:53:46 -0700 (PDT) Date: Wed, 6 Jul 2022 21:53:45 -0500 From: Bjorn Andersson To: Christian Marangi Cc: Andy Gross , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Ohad Ben-Cohen , Baolin Wang , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org Subject: Re: [PATCH 1/3] hwspinlock: qcom: Add support for mmio usage to sfpb-mutex Message-ID: References: <20220707013017.26654-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220707013017.26654-1-ansuelsmth@gmail.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Wed 06 Jul 20:30 CDT 2022, Christian Marangi wrote: > Allow sfpb-mutex to use mmio in addition to syscon. > Reviewed-by: Bjorn Andersson > Signed-off-by: Christian Marangi > --- > drivers/hwspinlock/qcom_hwspinlock.c | 32 ++++++++++++++++++++++------ > 1 file changed, 25 insertions(+), 7 deletions(-) > > diff --git a/drivers/hwspinlock/qcom_hwspinlock.c b/drivers/hwspinlock/qcom_hwspinlock.c > index 364710966665..23c913095bd0 100644 > --- a/drivers/hwspinlock/qcom_hwspinlock.c > +++ b/drivers/hwspinlock/qcom_hwspinlock.c > @@ -19,6 +19,11 @@ > #define QCOM_MUTEX_APPS_PROC_ID 1 > #define QCOM_MUTEX_NUM_LOCKS 32 > > +struct qcom_hwspinlock_of_data { > + u32 offset; > + u32 stride; > +}; > + > static int qcom_hwspinlock_trylock(struct hwspinlock *lock) > { > struct regmap_field *field = lock->priv; > @@ -63,9 +68,20 @@ static const struct hwspinlock_ops qcom_hwspinlock_ops = { > .unlock = qcom_hwspinlock_unlock, > }; > > +static const struct qcom_hwspinlock_of_data of_sfpb_mutex = { > + .offset = 0x4, > + .stride = 0x4, > +}; > + > +/* All modern platform has offset 0 and stride of 4k */ > +static const struct qcom_hwspinlock_of_data of_tcsr_mutex = { > + .offset = 0, > + .stride = 0x1000, > +}; > + > static const struct of_device_id qcom_hwspinlock_of_match[] = { > - { .compatible = "qcom,sfpb-mutex" }, > - { .compatible = "qcom,tcsr-mutex" }, > + { .compatible = "qcom,sfpb-mutex", .data = &of_sfpb_mutex }, > + { .compatible = "qcom,tcsr-mutex", .data = &of_tcsr_mutex }, > { } > }; > MODULE_DEVICE_TABLE(of, qcom_hwspinlock_of_match); > @@ -101,7 +117,7 @@ static struct regmap *qcom_hwspinlock_probe_syscon(struct platform_device *pdev, > return regmap; > } > > -static const struct regmap_config tcsr_mutex_config = { > +static const struct regmap_config qcom_hwspinlock_mmio_config = { Any objections against me skipping this rename when applying the patch? Just to keep the patch to the point? Regards, Bjorn > .reg_bits = 32, > .reg_stride = 4, > .val_bits = 32, > @@ -112,18 +128,20 @@ static const struct regmap_config tcsr_mutex_config = { > static struct regmap *qcom_hwspinlock_probe_mmio(struct platform_device *pdev, > u32 *offset, u32 *stride) > { > + const struct qcom_hwspinlock_of_data *data; > struct device *dev = &pdev->dev; > void __iomem *base; > > - /* All modern platform has offset 0 and stride of 4k */ > - *offset = 0; > - *stride = 0x1000; > + data = of_device_get_match_data(dev); > + > + *offset = data->offset; > + *stride = data->stride; > > base = devm_platform_ioremap_resource(pdev, 0); > if (IS_ERR(base)) > return ERR_CAST(base); > > - return devm_regmap_init_mmio(dev, base, &tcsr_mutex_config); > + return devm_regmap_init_mmio(dev, base, &qcom_hwspinlock_mmio_config); > } > > static int qcom_hwspinlock_probe(struct platform_device *pdev) > -- > 2.36.1 >