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Message-ID: <ZKqP+BNhFPswyXkB@matsya>
Date: Sun, 9 Jul 2023 16:16:16 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Frank Li <Frank.li@....com>
Cc: robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, peng.fan@....com, joy.zou@....com,
shenwei.wang@....com, imx@...ts.linux.dev
Subject: Re: [PATCH v9 12/13] dmaengine: fsl-edma: integrate v3 support
On 07-07-23, 12:21, Frank Li wrote:
> On Fri, Jul 07, 2023 at 11:14:26AM +0530, Vinod Koul wrote:
> > On 20-06-23, 16:12, Frank Li wrote:
> > > + }
> > > +
> > > + fsl_chan->pd_dev = pd_chan;
> > > +
> > > + pm_runtime_use_autosuspend(fsl_chan->pd_dev);
> > > + pm_runtime_set_autosuspend_delay(fsl_chan->pd_dev, 200);
> > > + pm_runtime_set_active(fsl_chan->pd_dev);
> > > + //pm_runtime_put_sync_suspend(fsl_chan->pd_dev);
> >
> > Ouch!
> >
> > Always remember to run checkpatch on your code before sending!
> >
>
> ./scripts/checkpatch.pl v9-0012-dmaengine-fsl-edma-integrate-v3-support.patch
> total: 0 errors, 0 warnings, 769 lines checked
This should have been caught, strange..
Run with --strict option?
>
> v9-0012-dmaengine-fsl-edma-integrate-v3-support.patch has no obvious style problems and is ready for submission.
>
> anyway, I will fix this.
>
> Frank
>
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > static int fsl_edma_probe(struct platform_device *pdev)
> > > {
> > > const struct of_device_id *of_id =
> > > @@ -234,6 +412,7 @@ static int fsl_edma_probe(struct platform_device *pdev)
> > > struct fsl_edma_engine *fsl_edma;
> > > const struct fsl_edma_drvdata *drvdata = NULL;
> > > struct fsl_edma_chan *fsl_chan;
> > > + u32 chan_mask[2] = {0, 0};
> > > struct edma_regs *regs;
> > > int len, chans;
> > > int ret, i;
> > > @@ -264,8 +443,10 @@ static int fsl_edma_probe(struct platform_device *pdev)
> > > if (IS_ERR(fsl_edma->membase))
> > > return PTR_ERR(fsl_edma->membase);
> > >
> > > - fsl_edma_setup_regs(fsl_edma);
> > > - regs = &fsl_edma->regs;
> > > + if (!(drvdata->flags & FSL_EDMA_DRV_SPLIT_REG)) {
> > > + fsl_edma_setup_regs(fsl_edma);
> > > + regs = &fsl_edma->regs;
> > > + }
> > >
> > > if (drvdata->flags & FSL_EDMA_DRV_HAS_DMACLK) {
> > > fsl_edma->dmaclk = devm_clk_get_enabled(&pdev->dev, "dma");
> > > @@ -275,9 +456,29 @@ static int fsl_edma_probe(struct platform_device *pdev)
> > > }
> > > }
> > >
> > > + if (drvdata->flags & FSL_EDMA_DRV_HAS_CHCLK) {
> > > + fsl_edma->chclk = devm_clk_get_enabled(&pdev->dev, "mp");
> > > + if (IS_ERR(fsl_edma->chclk)) {
> > > + dev_err(&pdev->dev, "Missing MP block clock.\n");
> > > + return PTR_ERR(fsl_edma->chclk);
> > > + }
> > > + }
> > > +
> > > + ret = of_property_read_variable_u32_array(np, "dma-channel-mask", chan_mask, 1, 2);
> > > +
> > > + if (ret > 0) {
> > > + fsl_edma->chan_masked = chan_mask[1];
> > > + fsl_edma->chan_masked <<= 32;
> > > + fsl_edma->chan_masked |= chan_mask[0];
> > > + }
> > > +
> > > for (i = 0; i < fsl_edma->drvdata->dmamuxs; i++) {
> > > char clkname[32];
> > >
> > > + /* eDMAv3 mux register move to TCD area if ch_mux exist */
> > > + if (drvdata->flags & FSL_EDMA_DRV_SPLIT_REG)
> > > + break;
> > > +
> > > fsl_edma->muxbase[i] = devm_platform_ioremap_resource(pdev,
> > > 1 + i);
> > > if (IS_ERR(fsl_edma->muxbase[i])) {
> > > @@ -297,9 +498,18 @@ static int fsl_edma_probe(struct platform_device *pdev)
> > >
> > > fsl_edma->big_endian = of_property_read_bool(np, "big-endian");
> > >
> > > + if (drvdata->flags & FSL_EDMA_DRV_HAS_PD) {
> > > + ret = fsl_edma3_attach_pd(pdev, fsl_edma);
> > > + if (ret)
> > > + return ret;
> > > + }
> > > +
> > > INIT_LIST_HEAD(&fsl_edma->dma_dev.channels);
> > > for (i = 0; i < fsl_edma->n_chans; i++) {
> > > - struct fsl_edma_chan *fsl_chan = &fsl_edma->chans[i];
> > > + fsl_chan = &fsl_edma->chans[i];
> > > +
> > > + if (fsl_edma->chan_masked & BIT(i))
> > > + continue;
> > >
> > > snprintf(fsl_chan->chan_name, sizeof(fsl_chan->chan_name), "%s-CH%02d",
> > > dev_name(&pdev->dev), i);
> > > @@ -310,8 +520,13 @@ static int fsl_edma_probe(struct platform_device *pdev)
> > > fsl_chan->idle = true;
> > > fsl_chan->dma_dir = DMA_NONE;
> > > fsl_chan->vchan.desc_free = fsl_edma_free_desc;
> > > - fsl_chan->tcd = fsl_edma->membase + EDMA_TCD
> > > - + i * sizeof(struct fsl_edma_hw_tcd);
> > > +
> > > + len = (drvdata->flags & FSL_EDMA_DRV_SPLIT_REG) ?
> > > + offsetof(struct fsl_edma3_ch_reg, tcd) : 0;
> > > + fsl_chan->tcd = fsl_edma->membase
> > > + + i * drvdata->chreg_space_sz + drvdata->chreg_off + len;
> > > +
> > > + fsl_chan->pdev = pdev;
> > > vchan_init(&fsl_chan->vchan, &fsl_edma->dma_dev);
> > >
> > > edma_write_tcdreg(fsl_chan, 0, csr);
> > > @@ -345,12 +560,25 @@ static int fsl_edma_probe(struct platform_device *pdev)
> > >
> > > fsl_edma->dma_dev.src_addr_widths = FSL_EDMA_BUSWIDTHS;
> > > fsl_edma->dma_dev.dst_addr_widths = FSL_EDMA_BUSWIDTHS;
> > > +
> > > + if (drvdata->flags & FSL_EDMA_DRV_BUS_8BYTE) {
> > > + fsl_edma->dma_dev.src_addr_widths |= BIT(DMA_SLAVE_BUSWIDTH_8_BYTES);
> > > + fsl_edma->dma_dev.dst_addr_widths |= BIT(DMA_SLAVE_BUSWIDTH_8_BYTES);
> > > + }
> > > +
> > > fsl_edma->dma_dev.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
> > > + if (drvdata->flags & FSL_EDMA_DRV_DEV_TO_DEV)
> > > + fsl_edma->dma_dev.directions |= BIT(DMA_DEV_TO_DEV);
> > > +
> > > + fsl_edma->dma_dev.copy_align = drvdata->flags & FSL_EDMA_DRV_ALIGN_64BYTE ?
> > > + DMAENGINE_ALIGN_64_BYTES :
> > > + DMAENGINE_ALIGN_32_BYTES;
> > >
> > > - fsl_edma->dma_dev.copy_align = DMAENGINE_ALIGN_32_BYTES;
> > > /* Per worst case 'nbytes = 1' take CITER as the max_seg_size */
> > > dma_set_max_seg_size(fsl_edma->dma_dev.dev, 0x3fff);
> > >
> > > + fsl_edma->dma_dev.residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT;
> > > +
> > > platform_set_drvdata(pdev, fsl_edma);
> > >
> > > ret = dma_async_device_register(&fsl_edma->dma_dev);
> > > @@ -360,7 +588,9 @@ static int fsl_edma_probe(struct platform_device *pdev)
> > > return ret;
> > > }
> > >
> > > - ret = of_dma_controller_register(np, fsl_edma_xlate, fsl_edma);
> > > + ret = of_dma_controller_register(np,
> > > + drvdata->flags & FSL_EDMA_DRV_SPLIT_REG ? fsl_edma3_xlate : fsl_edma_xlate,
> > > + fsl_edma);
> > > if (ret) {
> > > dev_err(&pdev->dev,
> > > "Can't register Freescale eDMA of_dma. (%d)\n", ret);
> > > @@ -369,7 +599,8 @@ static int fsl_edma_probe(struct platform_device *pdev)
> > > }
> > >
> > > /* enable round robin arbitration */
> > > - edma_writel(fsl_edma, EDMA_CR_ERGA | EDMA_CR_ERCA, regs->cr);
> > > + if (!(drvdata->flags & FSL_EDMA_DRV_SPLIT_REG))
> > > + edma_writel(fsl_edma, EDMA_CR_ERGA | EDMA_CR_ERCA, regs->cr);
> > >
> > > return 0;
> > > }
> > > --
> > > 2.34.1
> >
> > --
> > ~Vinod
--
~Vinod
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