[PATCH] pinctrl: qcom: sdm845: Enable dual edge errata

[PATCH] pinctrl: qcom: sdm845: Enable dual edge errata

[Bjorn Andersson]

It has been observed that dual edge triggered wakeirq GPIOs on SDM845
doesn't trigger interrupts on the falling edge.

Enabling wakeirq_dual_edge_errata for SDM845 indicates that the PDC in
SDM845 suffers from the same problem described, and worked around, by
Doug in 'c3c0c2e18d94 ("pinctrl: qcom: Handle broken/missing PDC dual
edge IRQs on sc7180")', so enable the workaround for SDM845 as well.

The specific problem seen without this is that gpio-keys does not detect
the falling edge of the LID gpio on the Lenovo Yoga C630 and as such
consistently reports the LID as closed.

Fixes: e35a6ae0eb3a ("pinctrl/msm: Setup GPIO chip in hierarchy")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
 drivers/pinctrl/qcom/pinctrl-sdm845.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/qcom/pinctrl-sdm845.c b/drivers/pinctrl/qcom/pinctrl-sdm845.c
index c51793f6546f..fdfd7b8f3a76 100644
--- a/drivers/pinctrl/qcom/pinctrl-sdm845.c
+++ b/drivers/pinctrl/qcom/pinctrl-sdm845.c
@@ -1310,6 +1310,7 @@ static const struct msm_pinctrl_soc_data sdm845_pinctrl = {
 	.ngpios = 151,
 	.wakeirq_map = sdm845_pdc_map,
 	.nwakeirq_map = ARRAY_SIZE(sdm845_pdc_map),
+	.wakeirq_dual_edge_errata = true,
 };
 
 static const struct msm_pinctrl_soc_data sdm845_acpi_pinctrl = {
-- 
2.32.0

Re: [PATCH] pinctrl: qcom: sdm845: Enable dual edge errata

[Stephen Boyd]

Quoting Bjorn Andersson (2021-11-01 20:41:15)
> It has been observed that dual edge triggered wakeirq GPIOs on SDM845
> doesn't trigger interrupts on the falling edge.
>
> Enabling wakeirq_dual_edge_errata for SDM845 indicates that the PDC in
> SDM845 suffers from the same problem described, and worked around, by
> Doug in 'c3c0c2e18d94 ("pinctrl: qcom: Handle broken/missing PDC dual
> edge IRQs on sc7180")', so enable the workaround for SDM845 as well.
>
> The specific problem seen without this is that gpio-keys does not detect
> the falling edge of the LID gpio on the Lenovo Yoga C630 and as such
> consistently reports the LID as closed.
>
> Fixes: e35a6ae0eb3a ("pinctrl/msm: Setup GPIO chip in hierarchy")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@chromium.org>

Re: [PATCH] pinctrl: qcom: sdm845: Enable dual edge errata

[Doug Anderson]

Hi,

On Mon, Nov 1, 2021 at 8:41 PM Bjorn Andersson
<bjorn.andersson@linaro.org> wrote:
>
> It has been observed that dual edge triggered wakeirq GPIOs on SDM845
> doesn't trigger interrupts on the falling edge.
>
> Enabling wakeirq_dual_edge_errata for SDM845 indicates that the PDC in
> SDM845 suffers from the same problem described, and worked around, by
> Doug in 'c3c0c2e18d94 ("pinctrl: qcom: Handle broken/missing PDC dual
> edge IRQs on sc7180")', so enable the workaround for SDM845 as well.
>
> The specific problem seen without this is that gpio-keys does not detect
> the falling edge of the LID gpio on the Lenovo Yoga C630 and as such
> consistently reports the LID as closed.
>
> Fixes: e35a6ae0eb3a ("pinctrl/msm: Setup GPIO chip in hierarchy")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
>  drivers/pinctrl/qcom/pinctrl-sdm845.c | 1 +
>  1 file changed, 1 insertion(+)

Reviewed-by: Douglas Anderson <dianders@chromium.org>

Re: [PATCH] pinctrl: qcom: sdm845: Enable dual edge errata

[Steev Klimaszewski]

On 11/1/21 10:41 PM, Bjorn Andersson wrote:
> It has been observed that dual edge triggered wakeirq GPIOs on SDM845
> doesn't trigger interrupts on the falling edge.
>
> Enabling wakeirq_dual_edge_errata for SDM845 indicates that the PDC in
> SDM845 suffers from the same problem described, and worked around, by
> Doug in 'c3c0c2e18d94 ("pinctrl: qcom: Handle broken/missing PDC dual
> edge IRQs on sc7180")', so enable the workaround for SDM845 as well.
>
> The specific problem seen without this is that gpio-keys does not detect
> the falling edge of the LID gpio on the Lenovo Yoga C630 and as such
> consistently reports the LID as closed.
>
> Fixes: e35a6ae0eb3a ("pinctrl/msm: Setup GPIO chip in hierarchy")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
>   drivers/pinctrl/qcom/pinctrl-sdm845.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/drivers/pinctrl/qcom/pinctrl-sdm845.c b/drivers/pinctrl/qcom/pinctrl-sdm845.c
> index c51793f6546f..fdfd7b8f3a76 100644
> --- a/drivers/pinctrl/qcom/pinctrl-sdm845.c
> +++ b/drivers/pinctrl/qcom/pinctrl-sdm845.c
> @@ -1310,6 +1310,7 @@ static const struct msm_pinctrl_soc_data sdm845_pinctrl = {
>   	.ngpios = 151,
>   	.wakeirq_map = sdm845_pdc_map,
>   	.nwakeirq_map = ARRAY_SIZE(sdm845_pdc_map),
> +	.wakeirq_dual_edge_errata = true,
>   };
>   
>   static const struct msm_pinctrl_soc_data sdm845_acpi_pinctrl = {

Tested here with a number of suspend cycles, works as expected now.  
Thank you so much!

Tested-By: Steev Klimaszewski <steev@kali.org>

Re: [PATCH] pinctrl: qcom: sdm845: Enable dual edge errata

[Linus Walleij]

On Tue, Nov 2, 2021 at 4:41 AM Bjorn Andersson
<bjorn.andersson@linaro.org> wrote:

> It has been observed that dual edge triggered wakeirq GPIOs on SDM845
> doesn't trigger interrupts on the falling edge.
>
> Enabling wakeirq_dual_edge_errata for SDM845 indicates that the PDC in
> SDM845 suffers from the same problem described, and worked around, by
> Doug in 'c3c0c2e18d94 ("pinctrl: qcom: Handle broken/missing PDC dual
> edge IRQs on sc7180")', so enable the workaround for SDM845 as well.
>
> The specific problem seen without this is that gpio-keys does not detect
> the falling edge of the LID gpio on the Lenovo Yoga C630 and as such
> consistently reports the LID as closed.
>
> Fixes: e35a6ae0eb3a ("pinctrl/msm: Setup GPIO chip in hierarchy")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Patch applied for fixes!

Yours,
Linus Walleij