Debounce filter setting should be independent from irq type setting
because according to the ACPI specs, there are separate arguments for
specifying debounce timeout and irq type in GpioIo and GpioInt.
This will fix broken touchpads for Lenovo Legion-5 AMD gaming laptops
including 15ARH05 (R7000) and R7000P whose BIOS set the debounce timeout
to 124.8ms which led to the kernel receiving only ~7 HID reports per
second.
Cc: Hans de Goede <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: Benjamin Tissoires <[email protected]>
BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1887190
Link: https://lore.kernel.org/linux-gpio/CAHp75VcwiGREBUJ0A06EEw-SyabqYsp%2Bdqs2DpSrhaY-2GVdAA%40mail.gmail.com/
Signed-off-by: Coiby Xu <[email protected]>
---
drivers/pinctrl/pinctrl-amd.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index e9b761c2b77a..2d4acf21117c 100644
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -468,7 +468,6 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
pin_reg &= ~BIT(LEVEL_TRIG_OFF);
pin_reg &= ~(ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
pin_reg |= ACTIVE_HIGH << ACTIVE_LEVEL_OFF;
- pin_reg |= DB_TYPE_REMOVE_GLITCH << DB_CNTRL_OFF;
irq_set_handler_locked(d, handle_edge_irq);
break;
@@ -476,7 +475,6 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
pin_reg &= ~BIT(LEVEL_TRIG_OFF);
pin_reg &= ~(ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
pin_reg |= ACTIVE_LOW << ACTIVE_LEVEL_OFF;
- pin_reg |= DB_TYPE_REMOVE_GLITCH << DB_CNTRL_OFF;
irq_set_handler_locked(d, handle_edge_irq);
break;
@@ -484,7 +482,6 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
pin_reg &= ~BIT(LEVEL_TRIG_OFF);
pin_reg &= ~(ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
pin_reg |= BOTH_EADGE << ACTIVE_LEVEL_OFF;
- pin_reg |= DB_TYPE_REMOVE_GLITCH << DB_CNTRL_OFF;
irq_set_handler_locked(d, handle_edge_irq);
break;
@@ -492,8 +489,6 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
pin_reg |= LEVEL_TRIGGER << LEVEL_TRIG_OFF;
pin_reg &= ~(ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
pin_reg |= ACTIVE_HIGH << ACTIVE_LEVEL_OFF;
- pin_reg &= ~(DB_CNTRl_MASK << DB_CNTRL_OFF);
- pin_reg |= DB_TYPE_PRESERVE_LOW_GLITCH << DB_CNTRL_OFF;
irq_set_handler_locked(d, handle_level_irq);
break;
@@ -501,8 +496,6 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
pin_reg |= LEVEL_TRIGGER << LEVEL_TRIG_OFF;
pin_reg &= ~(ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
pin_reg |= ACTIVE_LOW << ACTIVE_LEVEL_OFF;
- pin_reg &= ~(DB_CNTRl_MASK << DB_CNTRL_OFF);
- pin_reg |= DB_TYPE_PRESERVE_HIGH_GLITCH << DB_CNTRL_OFF;
irq_set_handler_locked(d, handle_level_irq);
break;
--
2.28.0
On Thu, Nov 5, 2020 at 1:07 AM Coiby Xu <[email protected]> wrote:
>
> Debounce filter setting should be independent from irq type setting
> because according to the ACPI specs, there are separate arguments for
> specifying debounce timeout and irq type in GpioIo and GpioInt.
irq -> IRQ
GpioIo()
GpioInt()
> This will fix broken touchpads for Lenovo Legion-5 AMD gaming laptops
> including 15ARH05 (R7000) and R7000P whose BIOS set the debounce timeout
> to 124.8ms which led to the kernel receiving only ~7 HID reports per
> second.
Reviewed-by: Andy Shevchenko <[email protected]>
> Cc: Hans de Goede <[email protected]>
> Cc: Andy Shevchenko <[email protected]>
> Cc: Benjamin Tissoires <[email protected]>
> BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1887190
> Link: https://lore.kernel.org/linux-gpio/CAHp75VcwiGREBUJ0A06EEw-SyabqYsp%2Bdqs2DpSrhaY-2GVdAA%40mail.gmail.com/
> Signed-off-by: Coiby Xu <[email protected]>
> ---
> drivers/pinctrl/pinctrl-amd.c | 7 -------
> 1 file changed, 7 deletions(-)
>
> diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
> index e9b761c2b77a..2d4acf21117c 100644
> --- a/drivers/pinctrl/pinctrl-amd.c
> +++ b/drivers/pinctrl/pinctrl-amd.c
> @@ -468,7 +468,6 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
> pin_reg &= ~BIT(LEVEL_TRIG_OFF);
> pin_reg &= ~(ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
> pin_reg |= ACTIVE_HIGH << ACTIVE_LEVEL_OFF;
> - pin_reg |= DB_TYPE_REMOVE_GLITCH << DB_CNTRL_OFF;
> irq_set_handler_locked(d, handle_edge_irq);
> break;
>
> @@ -476,7 +475,6 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
> pin_reg &= ~BIT(LEVEL_TRIG_OFF);
> pin_reg &= ~(ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
> pin_reg |= ACTIVE_LOW << ACTIVE_LEVEL_OFF;
> - pin_reg |= DB_TYPE_REMOVE_GLITCH << DB_CNTRL_OFF;
> irq_set_handler_locked(d, handle_edge_irq);
> break;
>
> @@ -484,7 +482,6 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
> pin_reg &= ~BIT(LEVEL_TRIG_OFF);
> pin_reg &= ~(ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
> pin_reg |= BOTH_EADGE << ACTIVE_LEVEL_OFF;
> - pin_reg |= DB_TYPE_REMOVE_GLITCH << DB_CNTRL_OFF;
> irq_set_handler_locked(d, handle_edge_irq);
> break;
>
> @@ -492,8 +489,6 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
> pin_reg |= LEVEL_TRIGGER << LEVEL_TRIG_OFF;
> pin_reg &= ~(ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
> pin_reg |= ACTIVE_HIGH << ACTIVE_LEVEL_OFF;
> - pin_reg &= ~(DB_CNTRl_MASK << DB_CNTRL_OFF);
> - pin_reg |= DB_TYPE_PRESERVE_LOW_GLITCH << DB_CNTRL_OFF;
> irq_set_handler_locked(d, handle_level_irq);
> break;
>
> @@ -501,8 +496,6 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
> pin_reg |= LEVEL_TRIGGER << LEVEL_TRIG_OFF;
> pin_reg &= ~(ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
> pin_reg |= ACTIVE_LOW << ACTIVE_LEVEL_OFF;
> - pin_reg &= ~(DB_CNTRl_MASK << DB_CNTRL_OFF);
> - pin_reg |= DB_TYPE_PRESERVE_HIGH_GLITCH << DB_CNTRL_OFF;
> irq_set_handler_locked(d, handle_level_irq);
> break;
>
> --
> 2.28.0
>
--
With Best Regards,
Andy Shevchenko