linux-kernel - Re: [PATCH 1/2] ACPI: resource: do IRQ override on LENOVO IdeaPad

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Date:   Thu, 13 Oct 2022 20:51:15 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     "Jiri Slaby (SUSE)" <jirislaby@...nel.org>
Cc:     rafael.j.wysocki@...el.com, linux-kernel@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
        Chuanhong Guo <gch981213@...il.com>,
        Tighe Donnelly <tighe.donnelly@...tonmail.com>,
        Mario Limonciello <mario.limonciello@....com>,
        Fridrich Strba <fstrba@...e.com>
Subject: Re: [PATCH 1/2] ACPI: resource: do IRQ override on LENOVO IdeaPad

On Tue, Oct 4, 2022 at 12:33 PM Jiri Slaby (SUSE) <jirislaby@...nel.org> wrote:
>
> LENOVO IdeaPad Flex 5 is ryzen-5 based and the commit below removed IRQ
> overriding for those. This broke touchscreen and trackpad:
>  i2c_designware AMDI0010:00: controller timed out
>  i2c_designware AMDI0010:03: controller timed out
>  i2c_hid_acpi i2c-MSFT0001:00: failed to reset device: -61
>  i2c_designware AMDI0010:03: controller timed out
>  ...
>  i2c_hid_acpi i2c-MSFT0001:00: can't add hid device: -61
>  i2c_hid_acpi: probe of i2c-MSFT0001:00 failed with error -61
>
> White-list this specific model in the override_table.
>
> For this to work, the ZEN test needs to be put below the table walk.
>
> Fixes: 37c81d9f1d1b (ACPI: resource: skip IRQ override on AMD Zen platforms)
> Link: https://bugzilla.suse.com/show_bug.cgi?id=1203794
> Cc: "Rafael J. Wysocki" <rafael@...nel.org>
> Cc: Len Brown <lenb@...nel.org>
> Cc: linux-acpi@...r.kernel.org
> Cc: Chuanhong Guo <gch981213@...il.com>
> Cc: Tighe Donnelly <tighe.donnelly@...tonmail.com>
> Cc: Mario Limonciello <mario.limonciello@....com>
> Cc: Fridrich Strba <fstrba@...e.com>
> Signed-off-by: Jiri Slaby (SUSE) <jirislaby@...nel.org>
> ---
>  drivers/acpi/resource.c | 42 +++++++++++++++++++++++++++--------------
>  1 file changed, 28 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
> index 514d89656dde..8d13e94bb921 100644
> --- a/drivers/acpi/resource.c
> +++ b/drivers/acpi/resource.c
> @@ -424,17 +424,31 @@ static const struct dmi_system_id asus_laptop[] = {
>         { }
>  };
>
> +static const struct dmi_system_id lenovo_82ra[] = {
> +       {
> +               .ident = "LENOVO IdeaPad Flex 5 16ALC7",
> +               .matches = {
> +                       DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> +                       DMI_MATCH(DMI_PRODUCT_NAME, "82RA"),
> +               },
> +       },
> +       { }
> +};
> +
>  struct irq_override_cmp {
>         const struct dmi_system_id *system;
>         unsigned char irq;
>         unsigned char triggering;
>         unsigned char polarity;
>         unsigned char shareable;
> +       bool override;
>  };
>
> -static const struct irq_override_cmp skip_override_table[] = {
> -       { medion_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0 },
> -       { asus_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0 },
> +static const struct irq_override_cmp override_table[] = {
> +       { medion_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
> +       { asus_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
> +       { lenovo_82ra, 6, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, true },
> +       { lenovo_82ra, 10, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, true },
>  };
>
>  static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
> @@ -442,6 +456,17 @@ static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
>  {
>         int i;
>
> +       for (i = 0; i < ARRAY_SIZE(override_table); i++) {
> +               const struct irq_override_cmp *entry = &override_table[i];
> +
> +               if (dmi_check_system(entry->system) &&
> +                   entry->irq == gsi &&
> +                   entry->triggering == triggering &&
> +                   entry->polarity == polarity &&
> +                   entry->shareable == shareable)
> +                       return entry->override;
> +       }
> +
>  #ifdef CONFIG_X86
>         /*
>          * IRQ override isn't needed on modern AMD Zen systems and
> @@ -452,17 +477,6 @@ static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
>                 return false;
>  #endif
>
> -       for (i = 0; i < ARRAY_SIZE(skip_override_table); i++) {
> -               const struct irq_override_cmp *entry = &skip_override_table[i];
> -
> -               if (dmi_check_system(entry->system) &&
> -                   entry->irq == gsi &&
> -                   entry->triggering == triggering &&
> -                   entry->polarity == polarity &&
> -                   entry->shareable == shareable)
> -                       return false;
> -       }
> -
>         return true;
>  }
>
> --

Applied along with the [2/2] as 6.1-rc material, thanks!