linux-kernel - Re: [PATCH] coresight: acpi: Static funnel support

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Message-ID: <CANLsYkzFY_N=JfgJ2fOcA3SDKHXL1+cGvPN_-3r4hD-_G=49Ow@mail.gmail.com>
Date:   Tue, 30 Jul 2019 11:40:30 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Suzuki K Poulose <suzuki.poulose@....com>
Cc:     linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Coresight ML <coresight@...ts.linaro.org>
Subject: Re: [PATCH] coresight: acpi: Static funnel support

On Fri, 26 Jul 2019 at 10:08, Suzuki K Poulose <suzuki.poulose@....com> wrote:
>
> The ACPI bindings for CoreSight has been updated to add the device
> id for non-programmable CoreSight funnels (aka static funnels) as of
> v1.1 [0]. Add the ACPI id for static funnels in the driver.
>
> [0] https://static.docs.arm.com/den0067/a/DEN0067_CoreSight_ACPI_1.1.pdf
>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
> ---
>  drivers/hwtracing/coresight/coresight-funnel.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c
> index fa97cb9ab4f9..0c99848a5d69 100644
> --- a/drivers/hwtracing/coresight/coresight-funnel.c
> +++ b/drivers/hwtracing/coresight/coresight-funnel.c
> @@ -5,6 +5,7 @@
>   * Description: CoreSight Funnel driver
>   */
>
> +#include <linux/acpi.h>
>  #include <linux/kernel.h>
>  #include <linux/init.h>
>  #include <linux/types.h>
> @@ -302,11 +303,19 @@ static const struct of_device_id static_funnel_match[] = {
>         {}
>  };
>
> +#ifdef CONFIG_ACPI
> +static const struct acpi_device_id static_funnel_ids[] = {
> +       {"ARMHC9FE", 0},
> +       {},
> +};
> +#endif
> +
>  static struct platform_driver static_funnel_driver = {
>         .probe          = static_funnel_probe,
>         .driver         = {
>                 .name   = "coresight-static-funnel",
>                 .of_match_table = static_funnel_match,
> +               .acpi_match_table = ACPI_PTR(static_funnel_ids),
>                 .pm     = &funnel_dev_pm_ops,
>                 .suppress_bind_attrs = true,
>         },

I haved also applied this patch.

Mathieu

> --
> 2.21.0
>