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SubjectRe: [PATCH] platform/x86: intel_int0002_vgpio: Only implement irq_set_wake on Bay Trail
On Sun, Feb 3, 2019 at 11:42 AM Hans de Goede <hdegoede@redhat.com> wrote:
>
> Commit c3b8e884defa ("platform/x86: intel_int0002_vgpio: Implement
> irq_set_wake"), was written to fix some wakeup issues on Bay Trail (BYT)
> devices.
>
> We've received a bug report that this causes a suspend regression on some
> Cherry Trail (CHT) based devices.
>
> To fix the issues this causes on CHT devices, this commit modifies the
> irq_set_wake support so that we only implement irq_set_wake on BYT devices,
>

Pushed to my review and testing queue, thanks!

> Fixes: c3b8e884defa ("platform/x86: intel_int0002_vgpio: ... irq_set_wake")
> Reported-and-tested-by: Maxim Mikityanskiy <maxtram95@gmail.com>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> ---
> drivers/platform/x86/intel_int0002_vgpio.c | 32 ++++++++++++++++++----
> 1 file changed, 26 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/platform/x86/intel_int0002_vgpio.c b/drivers/platform/x86/intel_int0002_vgpio.c
> index 4b8f7305fc8a..78787934b572 100644
> --- a/drivers/platform/x86/intel_int0002_vgpio.c
> +++ b/drivers/platform/x86/intel_int0002_vgpio.c
> @@ -51,11 +51,14 @@
> #define GPE0A_STS_PORT 0x420
> #define GPE0A_EN_PORT 0x428
>
> -#define ICPU(model) { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, }
> +#define BAYTRAIL 0x01
> +#define CHERRYTRAIL 0x02
> +
> +#define ICPU(model, data) { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, data}
>
> static const struct x86_cpu_id int0002_cpu_ids[] = {
> - ICPU(INTEL_FAM6_ATOM_SILVERMONT), /* Valleyview, Bay Trail */
> - ICPU(INTEL_FAM6_ATOM_AIRMONT), /* Braswell, Cherry Trail */
> + ICPU(INTEL_FAM6_ATOM_SILVERMONT, BAYTRAIL), /* Valleyview, Bay Trail */
> + ICPU(INTEL_FAM6_ATOM_AIRMONT, CHERRYTRAIL), /* Braswell, Cherry Trail */
> {}
> };
>
> @@ -135,7 +138,7 @@ static irqreturn_t int0002_irq(int irq, void *data)
> return IRQ_HANDLED;
> }
>
> -static struct irq_chip int0002_irqchip = {
> +static struct irq_chip int0002_byt_irqchip = {
> .name = DRV_NAME,
> .irq_ack = int0002_irq_ack,
> .irq_mask = int0002_irq_mask,
> @@ -143,10 +146,22 @@ static struct irq_chip int0002_irqchip = {
> .irq_set_wake = int0002_irq_set_wake,
> };
>
> +static struct irq_chip int0002_cht_irqchip = {
> + .name = DRV_NAME,
> + .irq_ack = int0002_irq_ack,
> + .irq_mask = int0002_irq_mask,
> + .irq_unmask = int0002_irq_unmask,
> + /*
> + * No set_wake, on CHT the IRQ is typically shared with the ACPI SCI
> + * and we don't want to mess with the ACPI SCI irq settings.
> + */
> +};
> +
> static int int0002_probe(struct platform_device *pdev)
> {
> struct device *dev = &pdev->dev;
> const struct x86_cpu_id *cpu_id;
> + struct irq_chip *irq_chip;
> struct gpio_chip *chip;
> int irq, ret;
>
> @@ -195,14 +210,19 @@ static int int0002_probe(struct platform_device *pdev)
> return ret;
> }
>
> - ret = gpiochip_irqchip_add(chip, &int0002_irqchip, 0, handle_edge_irq,
> + if (cpu_id->driver_data == BAYTRAIL)
> + irq_chip = &int0002_byt_irqchip;
> + else
> + irq_chip = &int0002_cht_irqchip;
> +
> + ret = gpiochip_irqchip_add(chip, irq_chip, 0, handle_edge_irq,
> IRQ_TYPE_NONE);
> if (ret) {
> dev_err(dev, "Error adding irqchip: %d\n", ret);
> return ret;
> }
>
> - gpiochip_set_chained_irqchip(chip, &int0002_irqchip, irq, NULL);
> + gpiochip_set_chained_irqchip(chip, irq_chip, irq, NULL);
>
> return 0;
> }
> --
> 2.20.1
>


--
With Best Regards,
Andy Shevchenko

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