mbox series

[v4,0/5] mmc: mediatek: add mmc cqhci support

Message ID 1586165281-11888-1-git-send-email-chun-hung.wu@mediatek.com
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Series mmc: mediatek: add mmc cqhci support | expand

Message

Chun-Hung Wu (巫駿宏) April 6, 2020, 9:27 a.m. UTC
This series provides MediaTek cqhci implementations as below:
  - Extend mmc_of_parse() to parse CQE bindings
  - Remove redundant host CQE bindings
  - Refine msdc timeout api to reduce redundant code
  - MediaTek command queue support
  - dt-bindings for mt6779

v1 -> v2:
  - Add more patch details in commit message
  - Separate msdc timeout api refine to individual patch

v2 -> v3:
  - Remove CR-Id, Change-Id and Feature in patches
  - Add Signed-off-by in patches

v3 -> v4:
  - Refine CQE bindings in mmc_of_parse (Ulf Hansson)
  - Remove redundant host CQE bindings (Linux Walleij)

Chun-Hung Wu (5):
  [1/5] mmc: core: Extend mmc_of_parse() to parse CQE bindings
  [2/5] mmc: host: Remove redundant CQE bindings
  [3/5] mmc: mediatek: refine msdc timeout api
  [4/5] mmc: mediatek: command queue support
  [5/5] dt-bindings: mmc: mediatek: Add document for mt6779

 Documentation/devicetree/bindings/mmc/mtk-sd.txt |   1 +
 drivers/mmc/core/host.c                          |   5 +
 drivers/mmc/host/mtk-sd.c                        | 151 +++++++++++++++++++++--
 drivers/mmc/host/sdhci-brcmstb.c                 |  11 +-
 drivers/mmc/host/sdhci-msm.c                     |   3 +-
 drivers/mmc/host/sdhci-of-arasan.c               |   3 -
 drivers/mmc/host/sdhci-tegra.c                   |   2 +-
 7 files changed, 155 insertions(+), 21 deletions(-)

-- 
1.9.1

Comments

Alan Cooper April 16, 2020, 6:25 p.m. UTC | #1
On Mon, Apr 13, 2020 at 8:22 PM Chun-Hung Wu <chun-hung.wu@mediatek.com> wrote:
>
> On Mon, 2020-04-06 at 09:59 -0400, Alan Cooper wrote:
> > On Mon, Apr 6, 2020 at 5:28 AM Chun-Hung Wu <chun-hung.wu@mediatek.com> wrote:
> > >
> > > CQE bindings "supports-cqe" and "disable-cqe-dcmd" is parsed
> > > in mmc_of_parse(). Remove vendor code which parses CQE bindings,
> > > and use mmc_host->caps2 to decide support CQE or not.
> > >
> > > Signed-off-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
> > > ---
> > >  drivers/mmc/host/sdhci-brcmstb.c   | 11 ++++++-----
> > >  drivers/mmc/host/sdhci-msm.c       |  3 +--
> > >  drivers/mmc/host/sdhci-of-arasan.c |  3 ---
> > >  drivers/mmc/host/sdhci-tegra.c     |  2 +-
> > >  4 files changed, 8 insertions(+), 11 deletions(-)
> > >
> > > diff --git a/drivers/mmc/host/sdhci-brcmstb.c b/drivers/mmc/host/sdhci-brcmstb.c
> > > index ad01f64..07c90c6 100644
> > > --- a/drivers/mmc/host/sdhci-brcmstb.c
> > > +++ b/drivers/mmc/host/sdhci-brcmstb.c
> > > @@ -247,10 +247,6 @@ static int sdhci_brcmstb_probe(struct platform_device *pdev)
> > >                 return res;
> > >
> > >         memset(&brcmstb_pdata, 0, sizeof(brcmstb_pdata));
> > > -       if (device_property_read_bool(&pdev->dev, "supports-cqe")) {
> > > -               has_cqe = true;
> > > -               match_priv->ops->irq = sdhci_brcmstb_cqhci_irq;
> >
> > The above line that sets the irq was moved to later in the function,
> > but needs to come before sdhci_pltfm_init()
> >
> > Al
> After check the code in sdhci_pltfm_init(), I don't see where
> match_priv->ops->irq being used in code section.
> Only "host->ops = pdata->ops;" is assigned, may I know why should
> we put match_priv->ops->irq = sdhci_brcmstb_cqhci_irq; before
> sdhci_pltfm_init()?
> By the way, host only added to kernel after sdhci_brcmstb_add_host(),
> So, I suppose isr assignment is ok before anywhere of it.

I thought I remembered having to move the "set irq" to before
sdhci_pltfm_init() when I first added the functionality, but it looks
like it isn't necessary
I tested your changes and they worked correctly.
Acked-by: Al Cooper <alcooperx@gmail.com>



> >
> > > -       }
> > >         brcmstb_pdata.ops = match_priv->ops;
> > >         host = sdhci_pltfm_init(pdev, &brcmstb_pdata,
> > >                                 sizeof(struct sdhci_brcmstb_priv));
> > > @@ -261,7 +257,6 @@ static int sdhci_brcmstb_probe(struct platform_device *pdev)
> > >
> > >         pltfm_host = sdhci_priv(host);
> > >         priv = sdhci_pltfm_priv(pltfm_host);
> > > -       priv->has_cqe = has_cqe;
> > >
> > >         /* Map in the non-standard CFG registers */
> > >         iomem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> > > @@ -276,6 +271,12 @@ static int sdhci_brcmstb_probe(struct platform_device *pdev)
> > >         if (res)
> > >                 goto err;
> > >
> > > +       if (host->mmc->caps2 & MMC_CAP2_CQE) {
> > > +               has_cqe = true;
> > > +               match_priv->ops->irq = sdhci_brcmstb_cqhci_irq;
> > > +       }
> > > +       priv->has_cqe = has_cqe;
> > > +
> > >         /*
> > >          * If the chip has enhanced strobe and it's enabled, add
> > >          * callback
> > > diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> > > index c3a160c..fbb2f57 100644
> > > --- a/drivers/mmc/host/sdhci-msm.c
> > > +++ b/drivers/mmc/host/sdhci-msm.c
> > > @@ -1880,7 +1880,6 @@ static int sdhci_msm_probe(struct platform_device *pdev)
> > >         u8 core_major;
> > >         const struct sdhci_msm_offset *msm_offset;
> > >         const struct sdhci_msm_variant_info *var_info;
> > > -       struct device_node *node = pdev->dev.of_node;
> > >
> > >         host = sdhci_pltfm_init(pdev, &sdhci_msm_pdata, sizeof(*msm_host));
> > >         if (IS_ERR(host))
> > > @@ -2076,7 +2075,7 @@ static int sdhci_msm_probe(struct platform_device *pdev)
> > >         pm_runtime_use_autosuspend(&pdev->dev);
> > >
> > >         host->mmc_host_ops.execute_tuning = sdhci_msm_execute_tuning;
> > > -       if (of_property_read_bool(node, "supports-cqe"))
> > > +       if (host->mmc->caps2 & MMC_CAP2_CQE)
> > >                 ret = sdhci_msm_cqe_add_host(host, pdev);
> > >         else
> > >                 ret = sdhci_add_host(host);
> > > diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
> > > index e49b44b..359eff6 100644
> > > --- a/drivers/mmc/host/sdhci-of-arasan.c
> > > +++ b/drivers/mmc/host/sdhci-of-arasan.c
> > > @@ -1281,9 +1281,6 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
> > >                                         sdhci_arasan_voltage_switch;
> > >                 sdhci_arasan->has_cqe = true;
> > >                 host->mmc->caps2 |= MMC_CAP2_CQE;
> > > -
> > > -               if (!of_property_read_bool(np, "disable-cqe-dcmd"))
> > > -                       host->mmc->caps2 |= MMC_CAP2_CQE_DCMD;
> > >         }
> > >
> > >         ret = sdhci_arasan_add_host(sdhci_arasan);
> > > diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
> > > index 403ac44..d09abdd 100644
> > > --- a/drivers/mmc/host/sdhci-tegra.c
> > > +++ b/drivers/mmc/host/sdhci-tegra.c
> > > @@ -715,7 +715,7 @@ static void tegra_sdhci_parse_dt(struct sdhci_host *host)
> > >         struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> > >         struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
> > >
> > > -       if (device_property_read_bool(host->mmc->parent, "supports-cqe"))
> > > +       if (host->mmc->caps2 & MMC_CAP2_CQE)
> > >                 tegra_host->enable_hwcq = true;
> > >         else
> > >                 tegra_host->enable_hwcq = false;
> > > --
> > > 1.9.1
>