11d0ea069SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
23f8c50c9SJohn Crispin /*
33f8c50c9SJohn Crispin * linux/drivers/pinctrl/pinctrl-lantiq.c
43f8c50c9SJohn Crispin * based on linux/drivers/pinctrl/pinctrl-pxa3xx.c
53f8c50c9SJohn Crispin *
655e40950SJohn Crispin * Copyright (C) 2012 John Crispin <john@phrozen.org>
73f8c50c9SJohn Crispin */
83f8c50c9SJohn Crispin
93f8c50c9SJohn Crispin #include <linux/device.h>
103f8c50c9SJohn Crispin #include <linux/io.h>
11*d854028aSAndy Shevchenko #include <linux/module.h>
123f8c50c9SJohn Crispin #include <linux/of.h>
13*d854028aSAndy Shevchenko #include <linux/platform_device.h>
14*d854028aSAndy Shevchenko #include <linux/seq_file.h>
15*d854028aSAndy Shevchenko #include <linux/slab.h>
163f8c50c9SJohn Crispin
173f8c50c9SJohn Crispin #include "pinctrl-lantiq.h"
183f8c50c9SJohn Crispin
ltq_get_group_count(struct pinctrl_dev * pctrldev)193f8c50c9SJohn Crispin static int ltq_get_group_count(struct pinctrl_dev *pctrldev)
203f8c50c9SJohn Crispin {
213f8c50c9SJohn Crispin struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
223f8c50c9SJohn Crispin return info->num_grps;
233f8c50c9SJohn Crispin }
243f8c50c9SJohn Crispin
ltq_get_group_name(struct pinctrl_dev * pctrldev,unsigned selector)253f8c50c9SJohn Crispin static const char *ltq_get_group_name(struct pinctrl_dev *pctrldev,
263f8c50c9SJohn Crispin unsigned selector)
273f8c50c9SJohn Crispin {
283f8c50c9SJohn Crispin struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
293f8c50c9SJohn Crispin if (selector >= info->num_grps)
303f8c50c9SJohn Crispin return NULL;
313f8c50c9SJohn Crispin return info->grps[selector].name;
323f8c50c9SJohn Crispin }
333f8c50c9SJohn Crispin
ltq_get_group_pins(struct pinctrl_dev * pctrldev,unsigned selector,const unsigned ** pins,unsigned * num_pins)343f8c50c9SJohn Crispin static int ltq_get_group_pins(struct pinctrl_dev *pctrldev,
353f8c50c9SJohn Crispin unsigned selector,
363f8c50c9SJohn Crispin const unsigned **pins,
373f8c50c9SJohn Crispin unsigned *num_pins)
383f8c50c9SJohn Crispin {
393f8c50c9SJohn Crispin struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
403f8c50c9SJohn Crispin if (selector >= info->num_grps)
413f8c50c9SJohn Crispin return -EINVAL;
423f8c50c9SJohn Crispin *pins = info->grps[selector].pins;
433f8c50c9SJohn Crispin *num_pins = info->grps[selector].npins;
443f8c50c9SJohn Crispin return 0;
453f8c50c9SJohn Crispin }
463f8c50c9SJohn Crispin
ltq_pinctrl_dt_free_map(struct pinctrl_dev * pctldev,struct pinctrl_map * map,unsigned num_maps)4789377aa5SAxel Lin static void ltq_pinctrl_dt_free_map(struct pinctrl_dev *pctldev,
483f8c50c9SJohn Crispin struct pinctrl_map *map, unsigned num_maps)
493f8c50c9SJohn Crispin {
503f8c50c9SJohn Crispin int i;
513f8c50c9SJohn Crispin
523f8c50c9SJohn Crispin for (i = 0; i < num_maps; i++)
531dda2fa6SLaurent Pinchart if (map[i].type == PIN_MAP_TYPE_CONFIGS_PIN ||
541dda2fa6SLaurent Pinchart map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP)
553f8c50c9SJohn Crispin kfree(map[i].data.configs.configs);
563f8c50c9SJohn Crispin kfree(map);
573f8c50c9SJohn Crispin }
583f8c50c9SJohn Crispin
ltq_pinctrl_pin_dbg_show(struct pinctrl_dev * pctldev,struct seq_file * s,unsigned offset)593f8c50c9SJohn Crispin static void ltq_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev,
603f8c50c9SJohn Crispin struct seq_file *s,
613f8c50c9SJohn Crispin unsigned offset)
623f8c50c9SJohn Crispin {
633f8c50c9SJohn Crispin seq_printf(s, " %s", dev_name(pctldev->dev));
643f8c50c9SJohn Crispin }
653f8c50c9SJohn Crispin
ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev * pctldev,struct device_node * np,struct pinctrl_map ** map)663a6b04caSJohn Crispin static void ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
673f8c50c9SJohn Crispin struct device_node *np,
683f8c50c9SJohn Crispin struct pinctrl_map **map)
693f8c50c9SJohn Crispin {
703f8c50c9SJohn Crispin struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev);
713a6b04caSJohn Crispin struct property *pins = of_find_property(np, "lantiq,pins", NULL);
723a6b04caSJohn Crispin struct property *groups = of_find_property(np, "lantiq,groups", NULL);
733f8c50c9SJohn Crispin unsigned long configs[3];
743f8c50c9SJohn Crispin unsigned num_configs = 0;
753f8c50c9SJohn Crispin struct property *prop;
763f8c50c9SJohn Crispin const char *group, *pin;
773f8c50c9SJohn Crispin const char *function;
783f8c50c9SJohn Crispin int ret, i;
793f8c50c9SJohn Crispin
803a6b04caSJohn Crispin if (!pins && !groups) {
8194f4e54cSRob Herring dev_err(pctldev->dev, "%pOFn defines neither pins nor groups\n",
8294f4e54cSRob Herring np);
833a6b04caSJohn Crispin return;
843a6b04caSJohn Crispin }
853a6b04caSJohn Crispin
863a6b04caSJohn Crispin if (pins && groups) {
8794f4e54cSRob Herring dev_err(pctldev->dev, "%pOFn defines both pins and groups\n",
8894f4e54cSRob Herring np);
893a6b04caSJohn Crispin return;
903a6b04caSJohn Crispin }
913a6b04caSJohn Crispin
923f8c50c9SJohn Crispin ret = of_property_read_string(np, "lantiq,function", &function);
933a6b04caSJohn Crispin if (groups && !ret) {
943f8c50c9SJohn Crispin of_property_for_each_string(np, "lantiq,groups", prop, group) {
953f8c50c9SJohn Crispin (*map)->type = PIN_MAP_TYPE_MUX_GROUP;
963f8c50c9SJohn Crispin (*map)->name = function;
973f8c50c9SJohn Crispin (*map)->data.mux.group = group;
983f8c50c9SJohn Crispin (*map)->data.mux.function = function;
993f8c50c9SJohn Crispin (*map)++;
1003f8c50c9SJohn Crispin }
1013f8c50c9SJohn Crispin }
1023f8c50c9SJohn Crispin
1033f8c50c9SJohn Crispin for (i = 0; i < info->num_params; i++) {
1043f8c50c9SJohn Crispin u32 val;
1053f8c50c9SJohn Crispin int ret = of_property_read_u32(np,
1063f8c50c9SJohn Crispin info->params[i].property, &val);
1073f8c50c9SJohn Crispin if (!ret)
1083f8c50c9SJohn Crispin configs[num_configs++] =
1093f8c50c9SJohn Crispin LTQ_PINCONF_PACK(info->params[i].param,
1103f8c50c9SJohn Crispin val);
1113f8c50c9SJohn Crispin }
1123f8c50c9SJohn Crispin
1133f8c50c9SJohn Crispin if (!num_configs)
1143a6b04caSJohn Crispin return;
1153f8c50c9SJohn Crispin
1163f8c50c9SJohn Crispin of_property_for_each_string(np, "lantiq,pins", prop, pin) {
1173f8c50c9SJohn Crispin (*map)->data.configs.configs = kmemdup(configs,
1183f8c50c9SJohn Crispin num_configs * sizeof(unsigned long),
1193f8c50c9SJohn Crispin GFP_KERNEL);
1203f8c50c9SJohn Crispin (*map)->type = PIN_MAP_TYPE_CONFIGS_PIN;
1213f8c50c9SJohn Crispin (*map)->name = pin;
1223f8c50c9SJohn Crispin (*map)->data.configs.group_or_pin = pin;
1233f8c50c9SJohn Crispin (*map)->data.configs.num_configs = num_configs;
1243f8c50c9SJohn Crispin (*map)++;
1253f8c50c9SJohn Crispin }
1263a6b04caSJohn Crispin of_property_for_each_string(np, "lantiq,groups", prop, group) {
1273a6b04caSJohn Crispin (*map)->data.configs.configs = kmemdup(configs,
1283a6b04caSJohn Crispin num_configs * sizeof(unsigned long),
1293a6b04caSJohn Crispin GFP_KERNEL);
1303a6b04caSJohn Crispin (*map)->type = PIN_MAP_TYPE_CONFIGS_GROUP;
1313a6b04caSJohn Crispin (*map)->name = group;
1323a6b04caSJohn Crispin (*map)->data.configs.group_or_pin = group;
1333a6b04caSJohn Crispin (*map)->data.configs.num_configs = num_configs;
1343a6b04caSJohn Crispin (*map)++;
1353a6b04caSJohn Crispin }
1363f8c50c9SJohn Crispin }
1373f8c50c9SJohn Crispin
ltq_pinctrl_dt_subnode_size(struct device_node * np)1383f8c50c9SJohn Crispin static int ltq_pinctrl_dt_subnode_size(struct device_node *np)
1393f8c50c9SJohn Crispin {
1403f8c50c9SJohn Crispin int ret;
1413f8c50c9SJohn Crispin
1423f8c50c9SJohn Crispin ret = of_property_count_strings(np, "lantiq,groups");
1433f8c50c9SJohn Crispin if (ret < 0)
1443f8c50c9SJohn Crispin ret = of_property_count_strings(np, "lantiq,pins");
1453f8c50c9SJohn Crispin return ret;
1463f8c50c9SJohn Crispin }
1473f8c50c9SJohn Crispin
ltq_pinctrl_dt_node_to_map(struct pinctrl_dev * pctldev,struct device_node * np_config,struct pinctrl_map ** map,unsigned * num_maps)14889377aa5SAxel Lin static int ltq_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
1493f8c50c9SJohn Crispin struct device_node *np_config,
1503f8c50c9SJohn Crispin struct pinctrl_map **map,
1513f8c50c9SJohn Crispin unsigned *num_maps)
1523f8c50c9SJohn Crispin {
1533f8c50c9SJohn Crispin struct pinctrl_map *tmp;
1543f8c50c9SJohn Crispin struct device_node *np;
1553a6b04caSJohn Crispin int max_maps = 0;
1563f8c50c9SJohn Crispin
1573f8c50c9SJohn Crispin for_each_child_of_node(np_config, np)
1583a6b04caSJohn Crispin max_maps += ltq_pinctrl_dt_subnode_size(np);
1596396bb22SKees Cook *map = kzalloc(array3_size(max_maps, sizeof(struct pinctrl_map), 2),
1606396bb22SKees Cook GFP_KERNEL);
1613f8c50c9SJohn Crispin if (!*map)
1623f8c50c9SJohn Crispin return -ENOMEM;
1633f8c50c9SJohn Crispin tmp = *map;
1643f8c50c9SJohn Crispin
1653a6b04caSJohn Crispin for_each_child_of_node(np_config, np)
1663a6b04caSJohn Crispin ltq_pinctrl_dt_subnode_to_map(pctldev, np, &tmp);
1673a6b04caSJohn Crispin *num_maps = ((int)(tmp - *map));
1683a6b04caSJohn Crispin
1693f8c50c9SJohn Crispin return 0;
1703f8c50c9SJohn Crispin }
1713f8c50c9SJohn Crispin
172022ab148SLaurent Pinchart static const struct pinctrl_ops ltq_pctrl_ops = {
1733f8c50c9SJohn Crispin .get_groups_count = ltq_get_group_count,
1743f8c50c9SJohn Crispin .get_group_name = ltq_get_group_name,
1753f8c50c9SJohn Crispin .get_group_pins = ltq_get_group_pins,
1763f8c50c9SJohn Crispin .pin_dbg_show = ltq_pinctrl_pin_dbg_show,
1773f8c50c9SJohn Crispin .dt_node_to_map = ltq_pinctrl_dt_node_to_map,
1783f8c50c9SJohn Crispin .dt_free_map = ltq_pinctrl_dt_free_map,
1793f8c50c9SJohn Crispin };
1803f8c50c9SJohn Crispin
ltq_pmx_func_count(struct pinctrl_dev * pctrldev)1813f8c50c9SJohn Crispin static int ltq_pmx_func_count(struct pinctrl_dev *pctrldev)
1823f8c50c9SJohn Crispin {
1833f8c50c9SJohn Crispin struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
1843f8c50c9SJohn Crispin
1853f8c50c9SJohn Crispin return info->num_funcs;
1863f8c50c9SJohn Crispin }
1873f8c50c9SJohn Crispin
ltq_pmx_func_name(struct pinctrl_dev * pctrldev,unsigned selector)1883f8c50c9SJohn Crispin static const char *ltq_pmx_func_name(struct pinctrl_dev *pctrldev,
1893f8c50c9SJohn Crispin unsigned selector)
1903f8c50c9SJohn Crispin {
1913f8c50c9SJohn Crispin struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
1923f8c50c9SJohn Crispin
1933f8c50c9SJohn Crispin if (selector >= info->num_funcs)
1943f8c50c9SJohn Crispin return NULL;
1953f8c50c9SJohn Crispin
1963f8c50c9SJohn Crispin return info->funcs[selector].name;
1973f8c50c9SJohn Crispin }
1983f8c50c9SJohn Crispin
ltq_pmx_get_groups(struct pinctrl_dev * pctrldev,unsigned func,const char * const ** groups,unsigned * const num_groups)1993f8c50c9SJohn Crispin static int ltq_pmx_get_groups(struct pinctrl_dev *pctrldev,
2003f8c50c9SJohn Crispin unsigned func,
2013f8c50c9SJohn Crispin const char * const **groups,
2023f8c50c9SJohn Crispin unsigned * const num_groups)
2033f8c50c9SJohn Crispin {
2043f8c50c9SJohn Crispin struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
2053f8c50c9SJohn Crispin
2063f8c50c9SJohn Crispin *groups = info->funcs[func].groups;
2073f8c50c9SJohn Crispin *num_groups = info->funcs[func].num_groups;
2083f8c50c9SJohn Crispin
2093f8c50c9SJohn Crispin return 0;
2103f8c50c9SJohn Crispin }
2113f8c50c9SJohn Crispin
2123f8c50c9SJohn Crispin /* Return function number. If failure, return negative value. */
match_mux(const struct ltq_mfp_pin * mfp,unsigned mux)2133f8c50c9SJohn Crispin static int match_mux(const struct ltq_mfp_pin *mfp, unsigned mux)
2143f8c50c9SJohn Crispin {
2153f8c50c9SJohn Crispin int i;
2163f8c50c9SJohn Crispin for (i = 0; i < LTQ_MAX_MUX; i++) {
2173f8c50c9SJohn Crispin if (mfp->func[i] == mux)
2183f8c50c9SJohn Crispin break;
2193f8c50c9SJohn Crispin }
2203f8c50c9SJohn Crispin if (i >= LTQ_MAX_MUX)
2213f8c50c9SJohn Crispin return -EINVAL;
2223f8c50c9SJohn Crispin return i;
2233f8c50c9SJohn Crispin }
2243f8c50c9SJohn Crispin
225d71ffeb9SDejin Zheng /* don't assume .mfp is linearly mapped. find the mfp with the correct .pin */
match_mfp(const struct ltq_pinmux_info * info,int pin)2263f8c50c9SJohn Crispin static int match_mfp(const struct ltq_pinmux_info *info, int pin)
2273f8c50c9SJohn Crispin {
2283f8c50c9SJohn Crispin int i;
2293f8c50c9SJohn Crispin for (i = 0; i < info->num_mfp; i++) {
2303f8c50c9SJohn Crispin if (info->mfp[i].pin == pin)
2313f8c50c9SJohn Crispin return i;
2323f8c50c9SJohn Crispin }
2333f8c50c9SJohn Crispin return -1;
2343f8c50c9SJohn Crispin }
2353f8c50c9SJohn Crispin
2363f8c50c9SJohn Crispin /* check whether current pin configuration is valid. Negative for failure */
match_group_mux(const struct ltq_pin_group * grp,const struct ltq_pinmux_info * info,unsigned mux)2373f8c50c9SJohn Crispin static int match_group_mux(const struct ltq_pin_group *grp,
2383f8c50c9SJohn Crispin const struct ltq_pinmux_info *info,
2393f8c50c9SJohn Crispin unsigned mux)
2403f8c50c9SJohn Crispin {
2413f8c50c9SJohn Crispin int i, pin, ret = 0;
2423f8c50c9SJohn Crispin for (i = 0; i < grp->npins; i++) {
2433f8c50c9SJohn Crispin pin = match_mfp(info, grp->pins[i]);
2443f8c50c9SJohn Crispin if (pin < 0) {
2453f8c50c9SJohn Crispin dev_err(info->dev, "could not find mfp for pin %d\n",
2463f8c50c9SJohn Crispin grp->pins[i]);
2473f8c50c9SJohn Crispin return -EINVAL;
2483f8c50c9SJohn Crispin }
2493f8c50c9SJohn Crispin ret = match_mux(&info->mfp[pin], mux);
2503f8c50c9SJohn Crispin if (ret < 0) {
2513f8c50c9SJohn Crispin dev_err(info->dev, "Can't find mux %d on pin%d\n",
2523f8c50c9SJohn Crispin mux, pin);
2533f8c50c9SJohn Crispin break;
2543f8c50c9SJohn Crispin }
2553f8c50c9SJohn Crispin }
2563f8c50c9SJohn Crispin return ret;
2573f8c50c9SJohn Crispin }
2583f8c50c9SJohn Crispin
ltq_pmx_set(struct pinctrl_dev * pctrldev,unsigned func,unsigned group)25903e9f0caSLinus Walleij static int ltq_pmx_set(struct pinctrl_dev *pctrldev,
2603f8c50c9SJohn Crispin unsigned func,
2613f8c50c9SJohn Crispin unsigned group)
2623f8c50c9SJohn Crispin {
2633f8c50c9SJohn Crispin struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
2643f8c50c9SJohn Crispin const struct ltq_pin_group *pin_grp = &info->grps[group];
2653f8c50c9SJohn Crispin int i, pin, pin_func, ret;
2663f8c50c9SJohn Crispin
2673f8c50c9SJohn Crispin if (!pin_grp->npins ||
2683f8c50c9SJohn Crispin (match_group_mux(pin_grp, info, pin_grp->mux) < 0)) {
2693f8c50c9SJohn Crispin dev_err(info->dev, "Failed to set the pin group: %s\n",
2703f8c50c9SJohn Crispin info->grps[group].name);
2713f8c50c9SJohn Crispin return -EINVAL;
2723f8c50c9SJohn Crispin }
2733f8c50c9SJohn Crispin for (i = 0; i < pin_grp->npins; i++) {
2743f8c50c9SJohn Crispin pin = match_mfp(info, pin_grp->pins[i]);
2753f8c50c9SJohn Crispin if (pin < 0) {
2763f8c50c9SJohn Crispin dev_err(info->dev, "could not find mfp for pin %d\n",
2773f8c50c9SJohn Crispin pin_grp->pins[i]);
2783f8c50c9SJohn Crispin return -EINVAL;
2793f8c50c9SJohn Crispin }
2803f8c50c9SJohn Crispin pin_func = match_mux(&info->mfp[pin], pin_grp->mux);
2813f8c50c9SJohn Crispin ret = info->apply_mux(pctrldev, pin, pin_func);
2823f8c50c9SJohn Crispin if (ret) {
2833f8c50c9SJohn Crispin dev_err(info->dev,
2843f8c50c9SJohn Crispin "failed to apply mux %d for pin %d\n",
2853f8c50c9SJohn Crispin pin_func, pin);
2863f8c50c9SJohn Crispin return ret;
2873f8c50c9SJohn Crispin }
2883f8c50c9SJohn Crispin }
2893f8c50c9SJohn Crispin return 0;
2903f8c50c9SJohn Crispin }
2913f8c50c9SJohn Crispin
ltq_pmx_gpio_request_enable(struct pinctrl_dev * pctrldev,struct pinctrl_gpio_range * range,unsigned pin)2923f8c50c9SJohn Crispin static int ltq_pmx_gpio_request_enable(struct pinctrl_dev *pctrldev,
2933f8c50c9SJohn Crispin struct pinctrl_gpio_range *range,
2943f8c50c9SJohn Crispin unsigned pin)
2953f8c50c9SJohn Crispin {
2963f8c50c9SJohn Crispin struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
297d8a7c1f1SJohn Crispin int mfp = match_mfp(info, pin);
2983f8c50c9SJohn Crispin int pin_func;
2993f8c50c9SJohn Crispin
3003f8c50c9SJohn Crispin if (mfp < 0) {
3013f8c50c9SJohn Crispin dev_err(info->dev, "could not find mfp for pin %d\n", pin);
3023f8c50c9SJohn Crispin return -EINVAL;
3033f8c50c9SJohn Crispin }
3043f8c50c9SJohn Crispin
3053f8c50c9SJohn Crispin pin_func = match_mux(&info->mfp[mfp], 0);
3063f8c50c9SJohn Crispin if (pin_func < 0) {
3073f8c50c9SJohn Crispin dev_err(info->dev, "No GPIO function on pin%d\n", mfp);
3083f8c50c9SJohn Crispin return -EINVAL;
3093f8c50c9SJohn Crispin }
3103f8c50c9SJohn Crispin
3113f8c50c9SJohn Crispin return info->apply_mux(pctrldev, mfp, pin_func);
3123f8c50c9SJohn Crispin }
3133f8c50c9SJohn Crispin
314022ab148SLaurent Pinchart static const struct pinmux_ops ltq_pmx_ops = {
3153f8c50c9SJohn Crispin .get_functions_count = ltq_pmx_func_count,
3163f8c50c9SJohn Crispin .get_function_name = ltq_pmx_func_name,
3173f8c50c9SJohn Crispin .get_function_groups = ltq_pmx_get_groups,
31803e9f0caSLinus Walleij .set_mux = ltq_pmx_set,
3193f8c50c9SJohn Crispin .gpio_request_enable = ltq_pmx_gpio_request_enable,
3203f8c50c9SJohn Crispin };
3213f8c50c9SJohn Crispin
3223f8c50c9SJohn Crispin /*
3233f8c50c9SJohn Crispin * allow different socs to register with the generic part of the lanti
3243f8c50c9SJohn Crispin * pinctrl code
3253f8c50c9SJohn Crispin */
ltq_pinctrl_register(struct platform_device * pdev,struct ltq_pinmux_info * info)3263f8c50c9SJohn Crispin int ltq_pinctrl_register(struct platform_device *pdev,
3273f8c50c9SJohn Crispin struct ltq_pinmux_info *info)
3283f8c50c9SJohn Crispin {
3293f8c50c9SJohn Crispin struct pinctrl_desc *desc;
3303f8c50c9SJohn Crispin
3313f8c50c9SJohn Crispin if (!info)
3323f8c50c9SJohn Crispin return -EINVAL;
3333f8c50c9SJohn Crispin desc = info->desc;
3343f8c50c9SJohn Crispin desc->pctlops = <q_pctrl_ops;
3353f8c50c9SJohn Crispin desc->pmxops = <q_pmx_ops;
3363f8c50c9SJohn Crispin info->dev = &pdev->dev;
3373f8c50c9SJohn Crispin
338280132d1SLaxman Dewangan info->pctrl = devm_pinctrl_register(&pdev->dev, desc, info);
339323de9efSMasahiro Yamada if (IS_ERR(info->pctrl)) {
3403f8c50c9SJohn Crispin dev_err(&pdev->dev, "failed to register LTQ pinmux driver\n");
341323de9efSMasahiro Yamada return PTR_ERR(info->pctrl);
3423f8c50c9SJohn Crispin }
3433f8c50c9SJohn Crispin platform_set_drvdata(pdev, info);
3443f8c50c9SJohn Crispin return 0;
3453f8c50c9SJohn Crispin }
346