--- /dev/null
+/*
+ * Marvell MVEBU pinctrl core driver
+ *
+ * Authors: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/pinctrl/machine.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+
+#include "pinctrl-mvebu.h"
+
+#define MPPS_PER_REG 8
+#define MPP_BITS 4
+#define MPP_MASK 0xf
+
+struct mvebu_pinctrl_function {
+ const char *name;
+ const char **groups;
+ unsigned num_groups;
+};
+
+struct mvebu_pinctrl_group {
+ const char *name;
+ struct mvebu_mpp_ctrl *ctrl;
+ struct mvebu_mpp_ctrl_setting *settings;
+ unsigned num_settings;
+ unsigned gid;
+ unsigned *pins;
+ unsigned npins;
+};
+
+struct mvebu_pinctrl {
+ struct device *dev;
+ struct pinctrl_dev *pctldev;
+ struct pinctrl_desc desc;
+ struct mvebu_pinctrl_group *groups;
+ unsigned num_groups;
+ struct mvebu_pinctrl_function *functions;
+ unsigned num_functions;
+ u8 variant;
+};
+
+static struct mvebu_pinctrl_group *mvebu_pinctrl_find_group_by_pid(
+ struct mvebu_pinctrl *pctl, unsigned pid)
+{
+ unsigned n;
+ for (n = 0; n < pctl->num_groups; n++) {
+ if (pid >= pctl->groups[n].pins[0] &&
+ pid < pctl->groups[n].pins[0] +
+ pctl->groups[n].npins)
+ return &pctl->groups[n];
+ }
+ return NULL;
+}
+
+static struct mvebu_pinctrl_group *mvebu_pinctrl_find_group_by_name(
+ struct mvebu_pinctrl *pctl, const char *name)
+{
+ unsigned n;
+ for (n = 0; n < pctl->num_groups; n++) {
+ if (strcmp(name, pctl->groups[n].name) == 0)
+ return &pctl->groups[n];
+ }
+ return NULL;
+}
+
+static struct mvebu_mpp_ctrl_setting *mvebu_pinctrl_find_setting_by_val(
+ struct mvebu_pinctrl *pctl, struct mvebu_pinctrl_group *grp,
+ unsigned long config)
+{
+ unsigned n;
+ for (n = 0; n < grp->num_settings; n++) {
+ if (config == grp->settings[n].val) {
+ if (!pctl->variant || (pctl->variant &
+ grp->settings[n].variant))
+ return &grp->settings[n];
+ }
+ }
+ return NULL;
+}
+
+static struct mvebu_mpp_ctrl_setting *mvebu_pinctrl_find_setting_by_name(
+ struct mvebu_pinctrl *pctl, struct mvebu_pinctrl_group *grp,
+ const char *name)
+{
+ unsigned n;
+ for (n = 0; n < grp->num_settings; n++) {
+ if (strcmp(name, grp->settings[n].name) == 0) {
+ if (!pctl->variant || (pctl->variant &
+ grp->settings[n].variant))
+ return &grp->settings[n];
+ }
+ }
+ return NULL;
+}
+
+static struct mvebu_mpp_ctrl_setting *mvebu_pinctrl_find_gpio_setting(
+ struct mvebu_pinctrl *pctl, struct mvebu_pinctrl_group *grp)
+{
+ unsigned n;
+ for (n = 0; n < grp->num_settings; n++) {
+ if (grp->settings[n].flags &
+ (MVEBU_SETTING_GPO | MVEBU_SETTING_GPI)) {
+ if (!pctl->variant || (pctl->variant &
+ grp->settings[n].variant))
+ return &grp->settings[n];
+ }
+ }
+ return NULL;
+}
+
+static struct mvebu_pinctrl_function *mvebu_pinctrl_find_function_by_name(
+ struct mvebu_pinctrl *pctl, const char *name)
+{
+ unsigned n;
+ for (n = 0; n < pctl->num_functions; n++) {
+ if (strcmp(name, pctl->functions[n].name) == 0)
+ return &pctl->functions[n];
+ }
+ return NULL;
+}
+
+static int mvebu_pinconf_group_get(struct pinctrl_dev *pctldev,
+ unsigned gid, unsigned long *config)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ struct mvebu_pinctrl_group *grp = &pctl->groups[gid];
+
+ if (!grp->ctrl)
+ return -EINVAL;
+
+ return grp->ctrl->mpp_get(grp->pins[0], config);
+}
+
+static int mvebu_pinconf_group_set(struct pinctrl_dev *pctldev,
+ unsigned gid, unsigned long *configs,
+ unsigned num_configs)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ struct mvebu_pinctrl_group *grp = &pctl->groups[gid];
+ int i, ret;
+
+ if (!grp->ctrl)
+ return -EINVAL;
+
+ for (i = 0; i < num_configs; i++) {
+ ret = grp->ctrl->mpp_set(grp->pins[0], configs[i]);
+ if (ret)
+ return ret;
+ } /* for each config */
+
+ return 0;
+}
+
+static void mvebu_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *s, unsigned gid)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ struct mvebu_pinctrl_group *grp = &pctl->groups[gid];
+ struct mvebu_mpp_ctrl_setting *curr;
+ unsigned long config;
+ unsigned n;
+
+ if (mvebu_pinconf_group_get(pctldev, gid, &config))
+ return;
+
+ curr = mvebu_pinctrl_find_setting_by_val(pctl, grp, config);
+
+ if (curr) {
+ seq_printf(s, "current: %s", curr->name);
+ if (curr->subname)
+ seq_printf(s, "(%s)", curr->subname);
+ if (curr->flags & (MVEBU_SETTING_GPO | MVEBU_SETTING_GPI)) {
+ seq_printf(s, "(");
+ if (curr->flags & MVEBU_SETTING_GPI)
+ seq_printf(s, "i");
+ if (curr->flags & MVEBU_SETTING_GPO)
+ seq_printf(s, "o");
+ seq_printf(s, ")");
+ }
+ } else
+ seq_printf(s, "current: UNKNOWN");
+
+ if (grp->num_settings > 1) {
+ seq_printf(s, ", available = [");
+ for (n = 0; n < grp->num_settings; n++) {
+ if (curr == &grp->settings[n])
+ continue;
+
+ /* skip unsupported settings for this variant */
+ if (pctl->variant &&
+ !(pctl->variant & grp->settings[n].variant))
+ continue;
+
+ seq_printf(s, " %s", grp->settings[n].name);
+ if (grp->settings[n].subname)
+ seq_printf(s, "(%s)", grp->settings[n].subname);
+ if (grp->settings[n].flags &
+ (MVEBU_SETTING_GPO | MVEBU_SETTING_GPI)) {
+ seq_printf(s, "(");
+ if (grp->settings[n].flags & MVEBU_SETTING_GPI)
+ seq_printf(s, "i");
+ if (grp->settings[n].flags & MVEBU_SETTING_GPO)
+ seq_printf(s, "o");
+ seq_printf(s, ")");
+ }
+ }
+ seq_printf(s, " ]");
+ }
+ return;
+}
+
+static const struct pinconf_ops mvebu_pinconf_ops = {
+ .pin_config_group_get = mvebu_pinconf_group_get,
+ .pin_config_group_set = mvebu_pinconf_group_set,
+ .pin_config_group_dbg_show = mvebu_pinconf_group_dbg_show,
+};
+
+static int mvebu_pinmux_get_funcs_count(struct pinctrl_dev *pctldev)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+
+ return pctl->num_functions;
+}
+
+static const char *mvebu_pinmux_get_func_name(struct pinctrl_dev *pctldev,
+ unsigned fid)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+
+ return pctl->functions[fid].name;
+}
+
+static int mvebu_pinmux_get_groups(struct pinctrl_dev *pctldev, unsigned fid,
+ const char * const **groups,
+ unsigned * const num_groups)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+
+ *groups = pctl->functions[fid].groups;
+ *num_groups = pctl->functions[fid].num_groups;
+ return 0;
+}
+
+static int mvebu_pinmux_set(struct pinctrl_dev *pctldev, unsigned fid,
+ unsigned gid)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ struct mvebu_pinctrl_function *func = &pctl->functions[fid];
+ struct mvebu_pinctrl_group *grp = &pctl->groups[gid];
+ struct mvebu_mpp_ctrl_setting *setting;
+ int ret;
+ unsigned long config;
+
+ setting = mvebu_pinctrl_find_setting_by_name(pctl, grp,
+ func->name);
+ if (!setting) {
+ dev_err(pctl->dev,
+ "unable to find setting %s in group %s\n",
+ func->name, func->groups[gid]);
+ return -EINVAL;
+ }
+
+ config = setting->val;
+ ret = mvebu_pinconf_group_set(pctldev, grp->gid, &config, 1);
+ if (ret) {
+ dev_err(pctl->dev, "cannot set group %s to %s\n",
+ func->groups[gid], func->name);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mvebu_pinmux_gpio_request_enable(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range, unsigned offset)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ struct mvebu_pinctrl_group *grp;
+ struct mvebu_mpp_ctrl_setting *setting;
+ unsigned long config;
+
+ grp = mvebu_pinctrl_find_group_by_pid(pctl, offset);
+ if (!grp)
+ return -EINVAL;
+
+ if (grp->ctrl->mpp_gpio_req)
+ return grp->ctrl->mpp_gpio_req(offset);
+
+ setting = mvebu_pinctrl_find_gpio_setting(pctl, grp);
+ if (!setting)
+ return -ENOTSUPP;
+
+ config = setting->val;
+
+ return mvebu_pinconf_group_set(pctldev, grp->gid, &config, 1);
+}
+
+static int mvebu_pinmux_gpio_set_direction(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range, unsigned offset, bool input)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ struct mvebu_pinctrl_group *grp;
+ struct mvebu_mpp_ctrl_setting *setting;
+
+ grp = mvebu_pinctrl_find_group_by_pid(pctl, offset);
+ if (!grp)
+ return -EINVAL;
+
+ if (grp->ctrl->mpp_gpio_dir)
+ return grp->ctrl->mpp_gpio_dir(offset, input);
+
+ setting = mvebu_pinctrl_find_gpio_setting(pctl, grp);
+ if (!setting)
+ return -ENOTSUPP;
+
+ if ((input && (setting->flags & MVEBU_SETTING_GPI)) ||
+ (!input && (setting->flags & MVEBU_SETTING_GPO)))
+ return 0;
+
+ return -ENOTSUPP;
+}
+
+static const struct pinmux_ops mvebu_pinmux_ops = {
+ .get_functions_count = mvebu_pinmux_get_funcs_count,
+ .get_function_name = mvebu_pinmux_get_func_name,
+ .get_function_groups = mvebu_pinmux_get_groups,
+ .gpio_request_enable = mvebu_pinmux_gpio_request_enable,
+ .gpio_set_direction = mvebu_pinmux_gpio_set_direction,
+ .set_mux = mvebu_pinmux_set,
+};
+
+static int mvebu_pinctrl_get_groups_count(struct pinctrl_dev *pctldev)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ return pctl->num_groups;
+}
+
+static const char *mvebu_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned gid)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ return pctl->groups[gid].name;
+}
+
+static int mvebu_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
+ unsigned gid, const unsigned **pins,
+ unsigned *num_pins)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ *pins = pctl->groups[gid].pins;
+ *num_pins = pctl->groups[gid].npins;
+ return 0;
+}
+
+static int mvebu_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np,
+ struct pinctrl_map **map,
+ unsigned *num_maps)
+{
+ struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ struct property *prop;
+ const char *function;
+ const char *group;
+ int ret, nmaps, n;
+
+ *map = NULL;
+ *num_maps = 0;
+
+ ret = of_property_read_string(np, "marvell,function", &function);
+ if (ret) {
+ dev_err(pctl->dev,
+ "missing marvell,function in node %s\n", np->name);
+ return 0;
+ }
+
+ nmaps = of_property_count_strings(np, "marvell,pins");
+ if (nmaps < 0) {
+ dev_err(pctl->dev,
+ "missing marvell,pins in node %s\n", np->name);
+ return 0;
+ }
+
+ *map = kmalloc(nmaps * sizeof(struct pinctrl_map), GFP_KERNEL);
+ if (*map == NULL) {
+ dev_err(pctl->dev,
+ "cannot allocate pinctrl_map memory for %s\n",
+ np->name);
+ return -ENOMEM;
+ }
+
+ n = 0;
+ of_property_for_each_string(np, "marvell,pins", prop, group) {
+ struct mvebu_pinctrl_group *grp =
+ mvebu_pinctrl_find_group_by_name(pctl, group);
+
+ if (!grp) {
+ dev_err(pctl->dev, "unknown pin %s", group);
+ continue;
+ }
+
+ if (!mvebu_pinctrl_find_setting_by_name(pctl, grp, function)) {
+ dev_err(pctl->dev, "unsupported function %s on pin %s",
+ function, group);
+ continue;
+ }
+
+ (*map)[n].type = PIN_MAP_TYPE_MUX_GROUP;
+ (*map)[n].data.mux.group = group;
+ (*map)[n].data.mux.function = function;
+ n++;
+ }
+
+ *num_maps = nmaps;
+
+ return 0;
+}
+
+static void mvebu_pinctrl_dt_free_map(struct pinctrl_dev *pctldev,
+ struct pinctrl_map *map, unsigned num_maps)
+{
+ kfree(map);
+}
+
+static const struct pinctrl_ops mvebu_pinctrl_ops = {
+ .get_groups_count = mvebu_pinctrl_get_groups_count,
+ .get_group_name = mvebu_pinctrl_get_group_name,
+ .get_group_pins = mvebu_pinctrl_get_group_pins,
+ .dt_node_to_map = mvebu_pinctrl_dt_node_to_map,
+ .dt_free_map = mvebu_pinctrl_dt_free_map,
+};
+
+static int _add_function(struct mvebu_pinctrl_function *funcs, int *funcsize,
+ const char *name)
+{
+ if (*funcsize <= 0)
+ return -EOVERFLOW;
+
+ while (funcs->num_groups) {
+ /* function already there */
+ if (strcmp(funcs->name, name) == 0) {
+ funcs->num_groups++;
+ return -EEXIST;
+ }
+ funcs++;
+ }
+
+ /* append new unique function */
+ funcs->name = name;
+ funcs->num_groups = 1;
+ (*funcsize)--;
+
+ return 0;
+}
+
+static int mvebu_pinctrl_build_functions(struct platform_device *pdev,
+ struct mvebu_pinctrl *pctl)
+{
+ struct mvebu_pinctrl_function *funcs;
+ int num = 0, funcsize = pctl->desc.npins;
+ int n, s;
+
+ /* we allocate functions for number of pins and hope
+ * there are fewer unique functions than pins available */
+ funcs = devm_kzalloc(&pdev->dev, funcsize *
+ sizeof(struct mvebu_pinctrl_function), GFP_KERNEL);
+ if (!funcs)
+ return -ENOMEM;
+
+ for (n = 0; n < pctl->num_groups; n++) {
+ struct mvebu_pinctrl_group *grp = &pctl->groups[n];
+ for (s = 0; s < grp->num_settings; s++) {
+ int ret;
+
+ /* skip unsupported settings on this variant */
+ if (pctl->variant &&
+ !(pctl->variant & grp->settings[s].variant))
+ continue;
+
+ /* check for unique functions and count groups */
+ ret = _add_function(funcs, &funcsize,
+ grp->settings[s].name);
+ if (ret == -EOVERFLOW)
+ dev_err(&pdev->dev,
+ "More functions than pins(%d)\n",
+ pctl->desc.npins);
+ if (ret < 0)
+ continue;
+
+ num++;
+ }
+ }
+
+ pctl->num_functions = num;
+ pctl->functions = funcs;
+
+ for (n = 0; n < pctl->num_groups; n++) {
+ struct mvebu_pinctrl_group *grp = &pctl->groups[n];
+ for (s = 0; s < grp->num_settings; s++) {
+ struct mvebu_pinctrl_function *f;
+ const char **groups;
+
+ /* skip unsupported settings on this variant */
+ if (pctl->variant &&
+ !(pctl->variant & grp->settings[s].variant))
+ continue;
+
+ f = mvebu_pinctrl_find_function_by_name(pctl,
+ grp->settings[s].name);
+
+ /* allocate group name array if not done already */
+ if (!f->groups) {
+ f->groups = devm_kzalloc(&pdev->dev,
+ f->num_groups * sizeof(char *),
+ GFP_KERNEL);
+ if (!f->groups)
+ return -ENOMEM;
+ }
+
+ /* find next free group name and assign current name */
+ groups = f->groups;
+ while (*groups)
+ groups++;
+ *groups = grp->name;
+ }
+ }
+
+ return 0;
+}
+
+int mvebu_pinctrl_probe(struct platform_device *pdev)
+{
+ struct mvebu_pinctrl_soc_info *soc = dev_get_platdata(&pdev->dev);
+ struct mvebu_pinctrl *pctl;
+ struct pinctrl_pin_desc *pdesc;
+ unsigned gid, n, k;
+ unsigned size, noname = 0;
+ char *noname_buf;
+ void *p;
+ int ret;
+
+ if (!soc || !soc->controls || !soc->modes) {
+ dev_err(&pdev->dev, "wrong pinctrl soc info\n");
+ return -EINVAL;
+ }
+
+ pctl = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_pinctrl),
+ GFP_KERNEL);
+ if (!pctl) {
+ dev_err(&pdev->dev, "unable to alloc driver\n");
+ return -ENOMEM;
+ }
+
+ pctl->desc.name = dev_name(&pdev->dev);
+ pctl->desc.owner = THIS_MODULE;
+ pctl->desc.pctlops = &mvebu_pinctrl_ops;
+ pctl->desc.pmxops = &mvebu_pinmux_ops;
+ pctl->desc.confops = &mvebu_pinconf_ops;
+ pctl->variant = soc->variant;
+ pctl->dev = &pdev->dev;
+ platform_set_drvdata(pdev, pctl);
+
+ /* count controls and create names for mvebu generic
+ register controls; also does sanity checks */
+ pctl->num_groups = 0;
+ pctl->desc.npins = 0;
+ for (n = 0; n < soc->ncontrols; n++) {
+ struct mvebu_mpp_ctrl *ctrl = &soc->controls[n];
+
+ pctl->desc.npins += ctrl->npins;
+ /* initialize control's pins[] array */
+ for (k = 0; k < ctrl->npins; k++)
+ ctrl->pins[k] = ctrl->pid + k;
+
+ /*
+ * We allow to pass controls with NULL name that we treat
+ * as a range of one-pin groups with generic mvebu register
+ * controls.
+ */
+ if (!ctrl->name) {
+ pctl->num_groups += ctrl->npins;
+ noname += ctrl->npins;
+ } else {
+ pctl->num_groups += 1;
+ }
+ }
+
+ pdesc = devm_kzalloc(&pdev->dev, pctl->desc.npins *
+ sizeof(struct pinctrl_pin_desc), GFP_KERNEL);
+ if (!pdesc) {
+ dev_err(&pdev->dev, "failed to alloc pinctrl pins\n");
+ return -ENOMEM;
+ }
+
+ for (n = 0; n < pctl->desc.npins; n++)
+ pdesc[n].number = n;
+ pctl->desc.pins = pdesc;
+
+ /*
+ * allocate groups and name buffers for unnamed groups.
+ */
+ size = pctl->num_groups * sizeof(*pctl->groups) + noname * 8;
+ p = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
+ if (!p) {
+ dev_err(&pdev->dev, "failed to alloc group data\n");
+ return -ENOMEM;
+ }
+ pctl->groups = p;
+ noname_buf = p + pctl->num_groups * sizeof(*pctl->groups);
+
+ /* assign mpp controls to groups */
+ gid = 0;
+ for (n = 0; n < soc->ncontrols; n++) {
+ struct mvebu_mpp_ctrl *ctrl = &soc->controls[n];
+ pctl->groups[gid].gid = gid;
+ pctl->groups[gid].ctrl = ctrl;
+ pctl->groups[gid].name = ctrl->name;
+ pctl->groups[gid].pins = ctrl->pins;
+ pctl->groups[gid].npins = ctrl->npins;
+
+ /*
+ * We treat unnamed controls as a range of one-pin groups
+ * with generic mvebu register controls. Use one group for
+ * each in this range and assign a default group name.
+ */
+ if (!ctrl->name) {
+ pctl->groups[gid].name = noname_buf;
+ pctl->groups[gid].npins = 1;
+ sprintf(noname_buf, "mpp%d", ctrl->pid+0);
+ noname_buf += 8;
+
+ for (k = 1; k < ctrl->npins; k++) {
+ gid++;
+ pctl->groups[gid].gid = gid;
+ pctl->groups[gid].ctrl = ctrl;
+ pctl->groups[gid].name = noname_buf;
+ pctl->groups[gid].pins = &ctrl->pins[k];
+ pctl->groups[gid].npins = 1;
+ sprintf(noname_buf, "mpp%d", ctrl->pid+k);
+ noname_buf += 8;
+ }
+ }
+ gid++;
+ }
+
+ /* assign mpp modes to groups */
+ for (n = 0; n < soc->nmodes; n++) {
+ struct mvebu_mpp_mode *mode = &soc->modes[n];
+ struct mvebu_pinctrl_group *grp =
+ mvebu_pinctrl_find_group_by_pid(pctl, mode->pid);
+ unsigned num_settings;
+
+ if (!grp) {
+ dev_warn(&pdev->dev, "unknown pinctrl group %d\n",
+ mode->pid);
+ continue;
+ }
+
+ for (num_settings = 0; ;) {
+ struct mvebu_mpp_ctrl_setting *set =
+ &mode->settings[num_settings];
+
+ if (!set->name)
+ break;
+ num_settings++;
+
+ /* skip unsupported settings for this variant */
+ if (pctl->variant && !(pctl->variant & set->variant))
+ continue;
+
+ /* find gpio/gpo/gpi settings */
+ if (strcmp(set->name, "gpio") == 0)
+ set->flags = MVEBU_SETTING_GPI |
+ MVEBU_SETTING_GPO;
+ else if (strcmp(set->name, "gpo") == 0)
+ set->flags = MVEBU_SETTING_GPO;
+ else if (strcmp(set->name, "gpi") == 0)
+ set->flags = MVEBU_SETTING_GPI;
+ }
+
+ grp->settings = mode->settings;
+ grp->num_settings = num_settings;
+ }
+
+ ret = mvebu_pinctrl_build_functions(pdev, pctl);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to build functions\n");
+ return ret;
+ }
+
+ pctl->pctldev = pinctrl_register(&pctl->desc, &pdev->dev, pctl);
+ if (!pctl->pctldev) {
+ dev_err(&pdev->dev, "unable to register pinctrl driver\n");
+ return -EINVAL;
+ }
+
+ dev_info(&pdev->dev, "registered pinctrl driver\n");
+
+ /* register gpio ranges */
+ for (n = 0; n < soc->ngpioranges; n++)
+ pinctrl_add_gpio_range(pctl->pctldev, &soc->gpioranges[n]);
+
+ return 0;
+}
+
+int mvebu_pinctrl_remove(struct platform_device *pdev)
+{
+ struct mvebu_pinctrl *pctl = platform_get_drvdata(pdev);
+ pinctrl_unregister(pctl->pctldev);
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff