Hi Maxime,
On 26/09/2017 15:00, Maxime Ripard wrote:
> On Tue, Sep 26, 2017 at 12:17:12PM +0000, Quentin Schulz wrote:
>> +static const struct axp20x_desc_pin axp209_pins[] = {
>> + AXP20X_PIN(AXP20X_PINCTRL_PIN(0, "GPIO0"),
>> + AXP20X_FUNCTION(0x0, "gpio_out"),
>> + AXP20X_FUNCTION(0x2, "gpio_in"),
>> + AXP20X_FUNCTION(0x3, "ldo"),
>> + AXP20X_FUNCTION(0x4, "adc")),
>> + AXP20X_PIN(AXP20X_PINCTRL_PIN(1, "GPIO1"),
>> + AXP20X_FUNCTION(0x0, "gpio_out"),
>> + AXP20X_FUNCTION(0x2, "gpio_in"),
>> + AXP20X_FUNCTION(0x3, "ldo"),
>> + AXP20X_FUNCTION(0x4, "adc")),
>> + AXP20X_PIN(AXP20X_PINCTRL_PIN(2, "GPIO2"),
>> + AXP20X_FUNCTION(0x0, "gpio_out"),
>> + AXP20X_FUNCTION(0x2, "gpio_in")),
>> +};
>
> If all the functions are the same, and at the same offset, can't we
> just hardcode it, instead of having (and duplicate) all the logic
> below?
>
AXP20X_PIN(AXP20X_PINCTRL_PIN(0, "GPIO0"),
AXP20X_GPIO_OUT,
AXP20X_GPIO_IN,
AXP20X_LDO,
AXP20X_ADC))
That's what you mean?
>> + pctrl_desc = devm_kzalloc(&pdev->dev, sizeof(*pctrl_desc), GFP_KERNEL);
>> + if (!pctrl_desc)
>> + return -ENOMEM;
>> +
>> + pctrl_desc->name = dev_name(&pdev->dev);
>> + pctrl_desc->owner = THIS_MODULE;
>> + pctrl_desc->pins = pins;
>> + pctrl_desc->npins = gpio->desc->npins;
>> + pctrl_desc->pctlops = &axp20x_pctrl_ops;
>> + pctrl_desc->pmxops = &axp20x_pmx_ops;
>
> The strict flag needs to be set too in order to avoid concurrent uses
> of GPIO and other functions.
>
Strict is a property of pinmux_ops struct (pmxops) and it is set.
Thanks,
Quentin
--
Quentin Schulz, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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