linux-kernel - Re: [PATCH] pinctrl: qcom: sc7180: Make gpio28 non wakeup capable

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Date:   Sat, 20 Jun 2020 23:03:05 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Rajendra Nayak <rnayak@...eaurora.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        MSM <linux-arm-msm@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Maulik Shah <mkshah@...eaurora.org>,
        Lina Iyer <ilina@...eaurora.org>
Subject: Re: [PATCH] pinctrl: qcom: sc7180: Make gpio28 non wakeup capable

On Mon, Jun 15, 2020 at 2:42 PM Rajendra Nayak <rnayak@...eaurora.org> wrote:

> It would have been nice to be able to do this only for the particular
> board with this design, however this change of removing gpio28 from the
> pinctrl SoC file means we end up with one less wakeup capable gpio for
> the entire SoC.

Yeah but what about only removing it for this board in the driver then?

> @@ -1122,7 +1122,7 @@ static const struct msm_pingroup sc7180_groups[] = {
>  static const struct msm_gpio_wakeirq_map sc7180_pdc_map[] = {
>         {0, 40}, {3, 50}, {4, 42}, {5, 70}, {6, 41}, {9, 35},
>         {10, 80}, {11, 51}, {16, 20}, {21, 55}, {22, 90}, {23, 21},
> -       {24, 61}, {26, 52}, {28, 36}, {30, 100}, {31, 33}, {32, 81},
> +       {24, 61}, {26, 52}, {30, 100}, {31, 33}, {32, 81},
>         {33, 62}, {34, 43}, {36, 91}, {37, 53}, {38, 63}, {39, 72},
>         {41, 101}, {42, 7}, {43, 34}, {45, 73}, {47, 82}, {49, 17},
>         {52, 109}, {53, 102}, {55, 92}, {56, 56}, {57, 57}, {58, 83},

Make a copy of this tuple-array and in sc7180_pinctrl_probe()
set sc7180_pinctrl.wakeirq_map and .nwakeirq_map to something
board specific like that:

if (of_machine_is_compatible("my,board")) {
    sc7180_pinctrl..wakeirq_map = ... ;
}

Yours,
Linus Walleij