Andrew,
On 04/07/2015 04:44 PM, Andrew Bresticker wrote:
[..]
> +static int pistachio_pinmux_enable(struct pinctrl_dev *pctldev,
> + unsigned func, unsigned group)
> +{
> + struct pistachio_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
> + const struct pistachio_pin_group *pg = &pctl->groups[group];
> + const struct pistachio_function *pf = &pctl->functions[func];
> + struct pinctrl_gpio_range *range;
> + unsigned int i;
> + u32 val;
> +
> + if (pg->mux_reg > 0) {
> + for (i = 0; i < ARRAY_SIZE(pg->mux_option); i++) {
> + if (pg->mux_option[i] == func)
> + break;
> + }
> + if (i == ARRAY_SIZE(pg->mux_option)) {
> + dev_err(pctl->dev, "Cannot mux pin %u to function %u\n",
> + group, func);
> + return -EINVAL;
> + }
> +
> + val = pctl_readl(pctl, pg->mux_reg);
> + val &= ~(pg->mux_mask << pg->mux_shift);
> + val |= i << pg->mux_shift;
> + pctl_writel(pctl, val, pg->mux_reg);
> +
> + if (pf->scenarios) {
> + for (i = 0; i < pf->nscenarios; i++) {
> + if (pf->scenarios[i] == group)
> + break;
> + }
> + if (WARN_ON(i == pf->nscenarios))
> + return -EINVAL;
> +
> + val = pctl_readl(pctl, pf->scenario_reg);
> + val &= ~(pf->scenario_mask << pf->scenario_shift);
> + val |= i << pf->scenario_shift;
> + pctl_writel(pctl, val, pf->scenario_reg);
> + }
> + }
> +
> + range = pinctrl_find_gpio_range_from_pin(pctl->pctldev, group);
> + if (range)
> + gpio_disable(gc_to_bank(range->gc), group - range->pin_base);
> +
If you plan to submit a v4, how about using "pg->pins" here instead of "group"?
Using "group" relies on having the same numberspace for the group and the pin,
and it'll break when introducing the RPU pinctrl.
Thanks!
--
Ezequiel
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