From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomasz Figa Subject: Re: [PATCH v2 11/29] venus: venc,vdec: adds clocks needed for venus 4xx Date: Thu, 24 May 2018 15:11:46 +0900 Message-ID: References: <20180515075859.17217-1-stanimir.varbanov@linaro.org> <20180515075859.17217-12-stanimir.varbanov@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: In-Reply-To: <20180515075859.17217-12-stanimir.varbanov@linaro.org> Sender: linux-kernel-owner@vger.kernel.org To: Stanimir Varbanov Cc: Mauro Carvalho Chehab , Hans Verkuil , Linux Media Mailing List , Linux Kernel Mailing List , linux-arm-msm , vgarodia@codeaurora.org List-Id: linux-arm-msm@vger.kernel.org Hi Stanimir, On Tue, May 15, 2018 at 5:10 PM Stanimir Varbanov < stanimir.varbanov@linaro.org> wrote: > This extends the clocks number to support suspend and resume > on Venus version 4xx. > Signed-off-by: Stanimir Varbanov > --- > drivers/media/platform/qcom/venus/core.h | 4 +-- > drivers/media/platform/qcom/venus/vdec.c | 42 ++++++++++++++++++++++++++------ > drivers/media/platform/qcom/venus/venc.c | 42 ++++++++++++++++++++++++++------ > 3 files changed, 72 insertions(+), 16 deletions(-) > diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h > index 8d3e150800c9..b5b9a84e9155 100644 > --- a/drivers/media/platform/qcom/venus/core.h > +++ b/drivers/media/platform/qcom/venus/core.h > @@ -92,8 +92,8 @@ struct venus_core { > void __iomem *base; > int irq; > struct clk *clks[VIDC_CLKS_NUM_MAX]; > - struct clk *core0_clk; > - struct clk *core1_clk; > + struct clk *core0_clk, *core0_bus_clk; > + struct clk *core1_clk, *core1_bus_clk; > struct video_device *vdev_dec; > struct video_device *vdev_enc; > struct v4l2_device v4l2_dev; > diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c > index 261a51adeef2..c45452634e7e 100644 > --- a/drivers/media/platform/qcom/venus/vdec.c > +++ b/drivers/media/platform/qcom/venus/vdec.c > @@ -1081,12 +1081,18 @@ static int vdec_probe(struct platform_device *pdev) > if (!core) > return -EPROBE_DEFER; > - if (core->res->hfi_version == HFI_VERSION_3XX) { > + if (IS_V3(core) || IS_V4(core)) { > core->core0_clk = devm_clk_get(dev, "core"); > if (IS_ERR(core->core0_clk)) > return PTR_ERR(core->core0_clk); > } > + if (IS_V4(core)) { > + core->core0_bus_clk = devm_clk_get(dev, "bus"); > + if (IS_ERR(core->core0_bus_clk)) > + return PTR_ERR(core->core0_bus_clk); > + } > + Rather than doing this conditional dance, wouldn't it make more sense to just list all the clocks in variant data struct and use clk_bulk_get()? > platform_set_drvdata(pdev, core); > vdev = video_device_alloc(); > @@ -1132,12 +1138,23 @@ static __maybe_unused int vdec_runtime_suspend(struct device *dev) > { > struct venus_core *core = dev_get_drvdata(dev); > - if (core->res->hfi_version == HFI_VERSION_1XX) > + if (IS_V1(core)) > return 0; > - writel(0, core->base + WRAPPER_VDEC_VCODEC_POWER_CONTROL); > + if (IS_V3(core)) > + writel(0, core->base + WRAPPER_VDEC_VCODEC_POWER_CONTROL); > + else if (IS_V4(core)) > + writel(0, core->base + WRAPPER_VCODEC0_MMCC_POWER_CONTROL); > + > + if (IS_V4(core)) > + clk_disable_unprepare(core->core0_bus_clk); > + > clk_disable_unprepare(core->core0_clk); > - writel(1, core->base + WRAPPER_VDEC_VCODEC_POWER_CONTROL); > + > + if (IS_V3(core)) > + writel(1, core->base + WRAPPER_VDEC_VCODEC_POWER_CONTROL); > + else if (IS_V4(core)) > + writel(1, core->base + WRAPPER_VCODEC0_MMCC_POWER_CONTROL); Almost every step here differs between version. I'd suggest splitting this into separate functions for both versions. > return 0; > } > @@ -1147,12 +1164,23 @@ static __maybe_unused int vdec_runtime_resume(struct device *dev) > struct venus_core *core = dev_get_drvdata(dev); > int ret; > - if (core->res->hfi_version == HFI_VERSION_1XX) > + if (IS_V1(core)) > return 0; > - writel(0, core->base + WRAPPER_VDEC_VCODEC_POWER_CONTROL); > + if (IS_V3(core)) > + writel(0, core->base + WRAPPER_VDEC_VCODEC_POWER_CONTROL); > + else if (IS_V4(core)) > + writel(0, core->base + WRAPPER_VCODEC0_MMCC_POWER_CONTROL); > + > ret = clk_prepare_enable(core->core0_clk); > - writel(1, core->base + WRAPPER_VDEC_VCODEC_POWER_CONTROL); > + > + if (IS_V4(core)) > + ret |= clk_prepare_enable(core->core0_bus_clk); Please don't OR error codes. If both calls end up with different errors, the resulting value would be meaningless. > + > + if (IS_V3(core)) > + writel(1, core->base + WRAPPER_VDEC_VCODEC_POWER_CONTROL); > + else if (IS_V4(core)) > + writel(1, core->base + WRAPPER_VCODEC0_MMCC_POWER_CONTROL); > return ret; > } Same for this function. I'd see separate function for each version. > diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c > index 947001170a77..bc8c2e7a8d2c 100644 > --- a/drivers/media/platform/qcom/venus/venc.c > +++ b/drivers/media/platform/qcom/venus/venc.c > @@ -1225,12 +1225,18 @@ static int venc_probe(struct platform_device *pdev) > if (!core) > return -EPROBE_DEFER; > - if (core->res->hfi_version == HFI_VERSION_3XX) { > + if (IS_V3(core) || IS_V4(core)) { > core->core1_clk = devm_clk_get(dev, "core"); > if (IS_ERR(core->core1_clk)) > return PTR_ERR(core->core1_clk); > } > + if (IS_V4(core)) { > + core->core1_bus_clk = devm_clk_get(dev, "bus"); > + if (IS_ERR(core->core1_bus_clk)) > + return PTR_ERR(core->core1_bus_clk); > + } > + Same as for corresponding function of vdec. > platform_set_drvdata(pdev, core); > vdev = video_device_alloc(); > @@ -1276,12 +1282,23 @@ static __maybe_unused int venc_runtime_suspend(struct device *dev) > { > struct venus_core *core = dev_get_drvdata(dev); > - if (core->res->hfi_version == HFI_VERSION_1XX) > + if (IS_V1(core)) > return 0; > - writel(0, core->base + WRAPPER_VENC_VCODEC_POWER_CONTROL); > + if (IS_V3(core)) > + writel(0, core->base + WRAPPER_VENC_VCODEC_POWER_CONTROL); > + else if (IS_V4(core)) > + writel(0, core->base + WRAPPER_VCODEC1_MMCC_POWER_CONTROL); > + > + if (IS_V4(core)) > + clk_disable_unprepare(core->core1_bus_clk); > + > clk_disable_unprepare(core->core1_clk); > - writel(1, core->base + WRAPPER_VENC_VCODEC_POWER_CONTROL); > + > + if (IS_V3(core)) > + writel(1, core->base + WRAPPER_VENC_VCODEC_POWER_CONTROL); > + else if (IS_V4(core)) > + writel(1, core->base + WRAPPER_VCODEC1_MMCC_POWER_CONTROL); > return 0; > } Same as for vdec. > @@ -1291,12 +1308,23 @@ static __maybe_unused int venc_runtime_resume(struct device *dev) > struct venus_core *core = dev_get_drvdata(dev); > int ret; > - if (core->res->hfi_version == HFI_VERSION_1XX) > + if (IS_V1(core)) > return 0; > - writel(0, core->base + WRAPPER_VENC_VCODEC_POWER_CONTROL); > + if (IS_V3(core)) > + writel(0, core->base + WRAPPER_VENC_VCODEC_POWER_CONTROL); > + else if (IS_V4(core)) > + writel(0, core->base + WRAPPER_VCODEC1_MMCC_POWER_CONTROL); > + > ret = clk_prepare_enable(core->core1_clk); > - writel(1, core->base + WRAPPER_VENC_VCODEC_POWER_CONTROL); > + > + if (IS_V4(core)) > + ret |= clk_prepare_enable(core->core1_bus_clk); > + > + if (IS_V3(core)) > + writel(1, core->base + WRAPPER_VENC_VCODEC_POWER_CONTROL); > + else if (IS_V4(core)) > + writel(1, core->base + WRAPPER_VCODEC1_MMCC_POWER_CONTROL); > return ret; > } Same as for vdec. Best regards, Tomasz