linux-kernel - Re: [PATCH V3 1/2] pinctrl: qcom: spmi-gpio: correct parent irqspec translation

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Date:   Mon, 13 Sep 2021 12:57:50 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        satya priya <skakit@...eaurora.org>
Cc:     David Collins <collinsd@...eaurora.org>, kgunda@...eaurora.org,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH V3 1/2] pinctrl: qcom: spmi-gpio: correct parent irqspec translation

Quoting satya priya (2021-09-08 23:01:27)
> From: David Collins <collinsd@...eaurora.org>
>
> pmic_gpio_child_to_parent_hwirq() and
> gpiochip_populate_parent_fwspec_fourcell() translate a pinctrl-
> spmi-gpio irqspec to an SPMI controller irqspec.  When they do
> this, they use a fixed SPMI slave ID of 0 and a fixed GPIO
> peripheral offset of 0xC0 (corresponding to SPMI address 0xC000).
> This translation results in an incorrect irqspec for secondary
> PMICs that don't have a slave ID of 0 as well as for PMIC chips
> which have GPIO peripherals located at a base address other than
> 0xC000.
>
> Correct this issue by passing the slave ID of the pinctrl-spmi-
> gpio device's parent in the SPMI controller irqspec and by
> calculating the peripheral ID base from the device tree 'reg'
> property of the pinctrl-spmi-gpio device.
>
> Signed-off-by: David Collins <collinsd@...eaurora.org>
> Signed-off-by: satya priya <skakit@...eaurora.org>
> Fixes: ca69e2d165eb ("qcom: spmi-gpio: add support for hierarchical IRQ chip")
> ---

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