lkml.org 
[lkml]   [2019]   [Jan]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v4 03/14] pinctrl: qcom: spmi-gpio: hardcode IRQ counts
On Sun 13 Jan 07:47 PST 2019, Brian Masney wrote:

> The probing of this driver calls platform_irq_count, which will
> setup all of the IRQs that are configured in device tree. In
> preparation for converting this driver to be a hierarchical IRQ
> chip, hardcode the IRQ count based on the hardware type so that all
> the IRQs are not configured immediately and are configured on an
> as-needed basis later in the boot process. This change will also
> allow for the removal of the interrupts property later in this
> patch series once the hierarchical IRQ chip support is in.
>
> This patch also removes the generic qcom,spmi-gpio OF match since we
> don't know the number of pins. All of the existing upstream bindings
> already include the more-specific binding.
>
> The pm8941 code was tested on a LG Nexus 5 (hammerhead) phone.
>
> Signed-off-by: Brian Masney <masneyb@onstation.org>
> ---
> Changes since v3:
> - More variants are now included. I missed these since I searched for
> qcom,spmi-gpio in the arm dts, and missed the ones in the arm64 dts.
>
> Changes since v2:
> - Don't move pmic_gpio_of_match block. Use device_get_match_data instead
> of of_match_device.
> - Correct build warning on arm64: warning: cast from pointer to integer
> of different size
>
> drivers/pinctrl/qcom/pinctrl-spmi-gpio.c | 28 ++++++++++--------------
> 1 file changed, 11 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
> index 5f2977982ef1..b74c44357e8a 100644
> --- a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
> +++ b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
> @@ -951,13 +951,7 @@ static int pmic_gpio_probe(struct platform_device *pdev)
> return ret;
> }
>
> - npins = platform_irq_count(pdev);
> - if (!npins)
> - return -EINVAL;
> - if (npins < 0)
> - return npins;
> -
> - BUG_ON(npins > ARRAY_SIZE(pmic_gpio_groups));
> + npins = (u16)(uintptr_t) device_get_match_data(&pdev->dev);

Why u16, afaict npins is an int? I'm pretty sure you can leave the last
cast as implicit and as it's not actually a pointer that we're acquiring
casting it to "unsigned long" is the idiomatic way.

Apart from this the change looks good.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Regards,
Bjorn

>
> state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL);
> if (!state)
> @@ -1063,16 +1057,16 @@ static int pmic_gpio_remove(struct platform_device *pdev)
> }
>
> static const struct of_device_id pmic_gpio_of_match[] = {
> - { .compatible = "qcom,pm8005-gpio" }, /* 4 GPIO's */
> - { .compatible = "qcom,pm8916-gpio" }, /* 4 GPIO's */
> - { .compatible = "qcom,pm8941-gpio" }, /* 36 GPIO's */
> - { .compatible = "qcom,pm8994-gpio" }, /* 22 GPIO's */
> - { .compatible = "qcom,pmi8994-gpio" }, /* 10 GPIO's */
> - { .compatible = "qcom,pm8998-gpio" }, /* 26 GPIO's */
> - { .compatible = "qcom,pmi8998-gpio" }, /* 14 GPIO's */
> - { .compatible = "qcom,pma8084-gpio" }, /* 22 GPIO's */
> - { .compatible = "qcom,pms405-gpio" }, /* 12 GPIO's, holes on 1 9 10 */
> - { .compatible = "qcom,spmi-gpio" }, /* Generic */
> + { .compatible = "qcom,pm8005-gpio", .data = (void *) 4 },
> + { .compatible = "qcom,pm8916-gpio", .data = (void *) 4 },
> + { .compatible = "qcom,pm8941-gpio", .data = (void *) 36 },
> + { .compatible = "qcom,pm8994-gpio", .data = (void *) 22 },
> + { .compatible = "qcom,pmi8994-gpio", .data = (void *) 10 },
> + { .compatible = "qcom,pm8998-gpio", .data = (void *) 26 },
> + { .compatible = "qcom,pmi8998-gpio", .data = (void *) 14 },
> + { .compatible = "qcom,pma8084-gpio", .data = (void *) 22 },
> + /* pms405 has 12 GPIOs with holes on 1, 9, and 10 */
> + { .compatible = "qcom,pms405-gpio", .data = (void *) 12 },
> { },
> };
>
> --
> 2.17.2
>

\
 
 \ /
  Last update: 2019-01-15 01:35    [W:0.220 / U:4.208 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site