diff options
Diffstat (limited to 'drivers/pinctrl/pinctrl-tegra.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-tegra.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-tegra.c b/drivers/pinctrl/pinctrl-tegra.c index e767355ab0a..65458096f41 100644 --- a/drivers/pinctrl/pinctrl-tegra.c +++ b/drivers/pinctrl/pinctrl-tegra.c @@ -39,6 +39,7 @@ struct tegra_pmx { struct pinctrl_dev *pctl; const struct tegra_pinctrl_soc_data *soc; + const char **group_pins; int nbanks; void __iomem **regs; @@ -620,6 +621,8 @@ int tegra_pinctrl_probe(struct platform_device *pdev, struct tegra_pmx *pmx; struct resource *res; int i; + const char **group_pins; + int fn, gn, gfn; pmx = devm_kzalloc(&pdev->dev, sizeof(*pmx), GFP_KERNEL); if (!pmx) { @@ -629,6 +632,41 @@ int tegra_pinctrl_probe(struct platform_device *pdev, pmx->dev = &pdev->dev; pmx->soc = soc_data; + /* + * Each mux group will appear in 4 functions' list of groups. + * This over-allocates slightly, since not all groups are mux groups. + */ + pmx->group_pins = devm_kzalloc(&pdev->dev, + soc_data->ngroups * 4 * sizeof(*pmx->group_pins), + GFP_KERNEL); + if (!pmx->group_pins) + return -ENOMEM; + + group_pins = pmx->group_pins; + for (fn = 0; fn < soc_data->nfunctions; fn++) { + struct tegra_function *func = &soc_data->functions[fn]; + + func->groups = group_pins; + + for (gn = 0; gn < soc_data->ngroups; gn++) { + const struct tegra_pingroup *g = &soc_data->groups[gn]; + + if (g->mux_reg == -1) + continue; + + for (gfn = 0; gfn < 4; gfn++) + if (g->funcs[gfn] == fn) + break; + if (gfn == 4) + continue; + + BUG_ON(group_pins - pmx->group_pins >= + soc_data->ngroups * 4); + *group_pins++ = g->name; + func->ngroups++; + } + } + tegra_pinctrl_gpio_range.npins = pmx->soc->ngpios; tegra_pinctrl_desc.name = dev_name(&pdev->dev); tegra_pinctrl_desc.pins = pmx->soc->pins; |