Charulatha V <charu@xxxxxx> writes:
> This patch adds support for handling GPIO as a HWMOD FW adapted
> platform device for OMAP2PLUS chips.
>
> gpio_init needs to be done before machine_init functions access
> gpio APIs.Hence gpio_init is made as a postcore_initcall.
>
> Signed-off-by: Charulatha V <charu@xxxxxx>
> Signed-off-by: Basak, Partha <p-basak2@xxxxxx>
> ---
[...]
> +static int omap2_init_gpio(struct omap_hwmod *oh, void *user)
> +{
> + struct omap_device *od;
> + struct omap_gpio_platform_data *pdata;
> + char *name = "omap-gpio";
> + static int id;
> + struct omap_gpio_dev_attr *gpio_dev_data;
> +
> + if (!oh) {
> + pr_err("Could not look up omap gpio %d\n", id + 1);
> + return -EINVAL;
> + }
> +
> + pdata = kzalloc(sizeof(struct omap_gpio_platform_data),
> + GFP_KERNEL);
> + if (!pdata) {
> + pr_err("Memory allocation failed gpio%d\n", id + 1);
> + return -ENOMEM;
> + }
> +
> + gpio_dev_data = (struct omap_gpio_dev_attr *)oh->dev_attr;
> +
> + pdata->gpio_attr = gpio_dev_data;
> + pdata->virtual_irq_start = IH_GPIO_BASE + 32 * id;
> + switch (oh->class->rev) {
> + case 0:
> + case 1:
> + pdata->bank_type = METHOD_GPIO_24XX;
> + break;
> + case 2:
> + pdata->bank_type = METHOD_GPIO_44XX;
> + break;
> + default:
> + WARN(1, "Invalid gpio bank_type\n");
> + break;
> + }
> + gpio_bank_count++;
> +
> + od = omap_device_build(name, id, oh, pdata,
> + sizeof(*pdata), omap_gpio_latency,
> + ARRAY_SIZE(omap_gpio_latency),
> + false);
> + WARN(IS_ERR(od), "Cant build omap_device for %s:%s.\n",
> + name, oh->name);
> +
pdata should be free'd here as omap_device_build makes a copy for
itself.
Kevin
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