On Wed, 2023-07-26 at 20:39 +0200, Krzysztof Kozlowski wrote:
> On 26/07/2023 09:11, Eliza Balas wrote:
> > This patch introduces the driver for the new ADI TDD engine HDL.
> > The generic TDD controller is in essence a waveform generator
> > capable of addressing RF applications which require Time Division
> > Duplexing, as well as controlling other modules of general
> > applications through its dedicated 32 channel outputs.
> >
> > The reason of creating the generic TDD controller was to reduce
> > the naming confusion around the existing repurposed TDD core
> > built for AD9361, as well as expanding its number of output
> > channels for systems which require more than six controlling signals.
> >
> > Signed-off-by: Eliza Balas <eliza.balas@xxxxxxxxxx>
> > ---
> > .../sysfs-bus-platform-drivers-adi-axi-tdd | 158 ++++
> > MAINTAINERS | 2 +
> > drivers/misc/Kconfig | 10 +
> > drivers/misc/Makefile | 1 +
> > drivers/misc/adi-axi-tdd.c | 753 ++++++++++++++++++
> > 5 files changed, 924 insertions(+)
> > create mode 100644 Documentation/ABI/testing/sysfs-bus-platform-drivers-adi-axi-
> > tdd
> > create mode 100644 drivers/misc/adi-axi-tdd.c
> >
> > diff --git a/Documentation/ABI/testing/sysfs-bus-platform-drivers-adi-axi-tdd
> > b/Documentation/ABI/testing/sysfs-bus-platform-drivers-adi-axi-tdd
> > new file mode 100644
> > index 000000000000..eb5f3db7d0cb
> > --- /dev/null
> > +++ b/Documentation/ABI/testing/sysfs-bus-platform-drivers-adi-axi-tdd
> > @@ -0,0 +1,158 @@
> > +What: /sys/bus/platform/drivers/adi-axi-tdd/*/burst_count
> > +Date: July 2023
> > +KernelVersion: 6.5
>
> We are in 6.5 now, so there is no way your driver will be in 6.5. Target
> 6.6 and use phb crystall ball for next release date (September).
>
> ...
>
> > +
> > +enum adi_axi_tdd_attribute_id {
> > + ADI_TDD_ATTR_VERSION,
> > + ADI_TDD_ATTR_CORE_ID,
> > + ADI_TDD_ATTR_SCRATCH,
> > + ADI_TDD_ATTR_MAGIC,
> > +
>
> ...
>
> > +
> > +static int adi_axi_tdd_probe(struct platform_device *pdev)
> > +{
> > + unsigned int expected_version, version, data;
> > + struct adi_axi_tdd_state *st;
> > + struct clk *aclk;
> > + int ret;
> > +
> > + st = devm_kzalloc(&pdev->dev, sizeof(*st), GFP_KERNEL);
> > + if (!st)
> > + return -ENOMEM;
> > +
> > + st->base = devm_platform_ioremap_resource(pdev, 0);
> > + if (IS_ERR(st->base))
> > + return PTR_ERR(st->base);
> > +
> > + platform_set_drvdata(pdev, st);
> > +
> > + aclk = devm_clk_get_enabled(&pdev->dev, "s_axi_aclk");
> > + if (IS_ERR(aclk))
> > + return PTR_ERR(aclk);
> > +
> > + ret = devm_add_action_or_reset(&pdev->dev, adi_axi_tdd_clk_disable,
> > aclk);
>
> Looks you have here double disable.
>
> > + if (ret)
> > + return ret;
> > +
> > + st->clk.clk = devm_clk_get(&pdev->dev, "intf_clk");
> > + if (IS_ERR(st->clk.clk))
> > + return PTR_ERR(st->clk.clk);
> > +
> > + ret = clk_prepare_enable(st->clk.clk);
> > + if (ret)
> > + return ret;
> > +
> > + ret = devm_add_action_or_reset(&pdev->dev, adi_axi_tdd_clk_disable, st-
> > >clk.clk);
>
> Looks you have here double disable.
>
Not in here but it should actually drop the action and use devm_clk_get_enabled()
- Nuno Sá
