Fabio Estevam <festevam@xxxxxxxxx> wrote:
>On Wed, Jun 13, 2012 at 9:34 AM, Richard Zhao
><richard.zhao@xxxxxxxxxxxxx> wrote:
>
>> +static void __init imx6q_config_on_boot(void)
>> +{
>> + struct device_node *np;
>> + struct property *pp;
>> + int cnt, len, i;
>> + int gpio;
>> +
>> + np = of_find_node_by_path("/config-on-boot");
>> + if (!np)
>> + return;
>> + cnt = of_gpio_named_count(np, "output-gpios");
>> + pp = of_find_property(np, "output-gpio-values", &len);
>> + if (!pp || cnt != len / sizeof(u32)) {
>> + pr_err("Invalid config-on-boot gpios!\n");
>> + of_node_put(np);
>> + return;
>> + }
>> + for (i = 0; i < cnt; i++) {
>> + gpio = of_get_named_gpio(np, "output-gpios", i);
>> + if (gpio_is_valid(gpio))
>> + gpio_request_one(gpio, GPIOF_OUT_INIT_HIGH,
>> + "config-on-boot");
>> + }
>> +
>> + of_node_put(np);
>> +}
>
>Couldn't this function be made generic and put outside of mach-imx6q.c
>so that other platforms could use it?
>
>I need the same for mxs.
Yes, it is common. But it must be called after populate devices. Rob didn't agree the way yet.
--
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