/*
 * Core driver for the pin config portions of the pin control subsystem
 *
 * Copyright (C) 2011 ST-Ericsson SA
 * Written on behalf of Linaro for ST-Ericsson
 *
 * Author: Linus Walleij <linus.walleij@linaro.org>
 *
 * License terms: GNU General Public License (GPL) version 2
 */
#define pr_fmt(fmt) "pinconfig core: " fmt

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/pinctrl/machine.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinconf.h>
#include "core.h"
#include "pinconf.h"

int pinconf_check_ops(struct pinctrl_dev *pctldev)
{
        const struct pinconf_ops *ops = pctldev->desc->confops;

        /* We must be able to read out pin status */
        if (!ops->pin_config_get && !ops->pin_config_group_get) {
                dev_err(pctldev->dev,
                        "pinconf must be able to read out pin status\n");
                return -EINVAL;
        }
        /* We have to be able to config the pins in SOME way */
        if (!ops->pin_config_set && !ops->pin_config_group_set) {
                dev_err(pctldev->dev,
                        "pinconf has to be able to set a pins config\n");
                return -EINVAL;
        }
        return 0;
}

int pinconf_validate_map(struct pinctrl_map const *map, int i)
{
        if (!map->data.configs.group_or_pin) {
                pr_err("failed to register map %s (%d): no group/pin given\n",
                       map->name, i);
                return -EINVAL;
        }

        if (!map->data.configs.num_configs ||
                        !map->data.configs.configs) {
                pr_err("failed to register map %s (%d): no configs given\n",
                       map->name, i);
                return -EINVAL;
        }

        return 0;
}

int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
                           unsigned long *config)
{
        const struct pinconf_ops *ops = pctldev->desc->confops;

        if (!ops || !ops->pin_config_get) {
                dev_err(pctldev->dev, "cannot get pin configuration, missing "
                        "pin_config_get() function in driver\n");
                return -EINVAL;
        }

        return ops->pin_config_get(pctldev, pin, config);
}

/**
 * pin_config_get() - get the configuration of a single pin parameter
 * @dev_name: name of the pin controller device for this pin
 * @name: name of the pin to get the config for
 * @config: the config pointed to by this argument will be filled in with the
 *      current pin state, it can be used directly by drivers as a numeral, or
 *      it can be dereferenced to any struct.
 */
int pin_config_get(const char *dev_name, const char *name,
                          unsigned long *config)
{
        struct pinctrl_dev *pctldev;
        int pin;

        pctldev = get_pinctrl_dev_from_devname(dev_name);
        if (!pctldev) {
                pin = -EINVAL;
                return pin;
        }

        mutex_lock(&pctldev->mutex);

        pin = pin_get_from_name(pctldev, name);
        if (pin < 0)
                goto unlock;

        pin = pin_config_get_for_pin(pctldev, pin, config);

unlock:
        mutex_unlock(&pctldev->mutex);
        return pin;
}
EXPORT_SYMBOL(pin_config_get);

static int pin_config_set_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
                           unsigned long config)
{
        const struct pinconf_ops *ops = pctldev->desc->confops;
        int ret;

        if (!ops || !ops->pin_config_set) {
                dev_err(pctldev->dev, "cannot configure pin, missing "
                        "config function in driver\n");
                return -EINVAL;
        }

        ret = ops->pin_config_set(pctldev, pin, config);
        if (ret) {
                dev_err(pctldev->dev,
                        "unable to set pin configuration on pin %d\n", pin);
                return ret;
        }

        return 0;
}

/**
 * pin_config_set() - set the configuration of a single pin parameter
 * @dev_name: name of pin controller device for this pin
 * @name: name of the pin to set the config for
 * @config: the config in this argument will contain the desired pin state, it
 *      can be used directly by drivers as a numeral, or it can be dereferenced
 *      to any struct.
 */
int pin_config_set(const char *dev_name, const char *name,
                   unsigned long config)
{
        struct pinctrl_dev *pctldev;
        int pin, ret;

        pctldev = get_pinctrl_dev_from_devname(dev_name);
        if (!pctldev) {
                ret = -EINVAL;
                return ret;
        }

        mutex_lock(&pctldev->mutex);

        pin = pin_get_from_name(pctldev, name);
        if (pin < 0) {
                ret = pin;
                goto unlock;
        }

        ret = pin_config_set_for_pin(pctldev, pin, config);

unlock:
        mutex_unlock(&pctldev->mutex);
        return ret;
}
EXPORT_SYMBOL(pin_config_set);

int pin_config_group_get(const char *dev_name, const char *pin_group,
                         unsigned long *config)
{
        struct pinctrl_dev *pctldev;
        const struct pinconf_ops *ops;
        int selector, ret;

        pctldev = get_pinctrl_dev_from_devname(dev_name);
        if (!pctldev) {
                ret = -EINVAL;
                return ret;
        }

        mutex_lock(&pctldev->mutex);

        ops = pctldev->desc->confops;

        if (!ops || !ops->pin_config_group_get) {
                dev_err(pctldev->dev, "cannot get configuration for pin "
                        "group, missing group config get function in "
                        "driver\n");
                ret = -EINVAL;
                goto unlock;
        }

        selector = pinctrl_get_group_selector(pctldev, pin_group);
        if (selector < 0) {
                ret = selector;
                goto unlock;
        }

        ret = ops->pin_config_group_get(pctldev, selector, config);

unlock:
        mutex_unlock(&pctldev->mutex);
        return ret;
}
EXPORT_SYMBOL(pin_config_group_get);

int pin_config_group_set(const char *dev_name, const char *pin_group,
                         unsigned long config)
{
        struct pinctrl_dev *pctldev;
        const struct pinconf_ops *ops;
        const struct pinctrl_ops *pctlops;
        int selector;
        const unsigned *pins;
        unsigned num_pins;
        int ret;
        int i;

        pctldev = get_pinctrl_dev_from_devname(dev_name);
        if (!pctldev) {
                ret = -EINVAL;
                return ret;
        }

        mutex_lock(&pctldev->mutex);

        ops = pctldev->desc->confops;
        pctlops = pctldev->desc->pctlops;

        if (!ops || (!ops->pin_config_group_set && !ops->pin_config_set)) {
                dev_err(pctldev->dev, "cannot configure pin group, missing "
                        "config function in driver\n");
                ret = -EINVAL;
                goto unlock;
        }

        selector = pinctrl_get_group_selector(pctldev, pin_group);
        if (selector < 0) {
                ret = selector;
                goto unlock;
        }

        ret = pctlops->get_group_pins(pctldev, selector, &pins, &num_pins);
        if (ret) {
                dev_err(pctldev->dev, "cannot configure pin group, error "
                        "getting pins\n");
                goto unlock;
        }

        /*
         * If the pin controller supports handling entire groups we use that
         * capability.
         */
        if (ops->pin_config_group_set) {
                ret = ops->pin_config_group_set(pctldev, selector, config);
                /*
                 * If the pin controller prefer that a certain group be handled
                 * pin-by-pin as well, it returns -EAGAIN.
                 */
                if (ret != -EAGAIN)
                        goto unlock;
        }

        /*
         * If the controller cannot handle entire groups, we configure each pin
         * individually.
         */
        if (!ops->pin_config_set) {
                ret = 0;
                goto unlock;
        }

        for (i = 0; i < num_pins; i++) {
                ret = ops->pin_config_set(pctldev, pins[i], config);
                if (ret < 0)
                        goto unlock;
        }

        ret = 0;

unlock:
        mutex_unlock(&pctldev->mutex);

        return ret;
}
EXPORT_SYMBOL(pin_config_group_set);

int pinconf_map_to_setting(struct pinctrl_map const *map,
                          struct pinctrl_setting *setting)
{
        struct pinctrl_dev *pctldev = setting->pctldev;
        int pin;

        switch (setting->type) {
        case PIN_MAP_TYPE_CONFIGS_PIN:
                pin = pin_get_from_name(pctldev,
                                        map->data.configs.group_or_pin);
                if (pin < 0) {
                        dev_err(pctldev->dev, "could not map pin config for \"%s\"",
                                map->data.configs.group_or_pin);
                        return pin;
                }
                setting->data.configs.group_or_pin = pin;
                break;
        case PIN_MAP_TYPE_CONFIGS_GROUP:
                pin = pinctrl_get_group_selector(pctldev,
                                         map->data.configs.group_or_pin);
                if (pin < 0) {
                        dev_err(pctldev->dev, "could not map group config for \"%s\"",
                                map->data.configs.group_or_pin);
                        return pin;
                }
                setting->data.configs.group_or_pin = pin;
                break;
        default:
                return -EINVAL;
        }

        setting->data.configs.num_configs = map->data.configs.num_configs;
        setting->data.configs.configs = map->data.configs.configs;

        return 0;
}

void pinconf_free_setting(struct pinctrl_setting const *setting)
{
}

int pinconf_apply_setting(struct pinctrl_setting const *setting)
{
        struct pinctrl_dev *pctldev = setting->pctldev;
        const struct pinconf_ops *ops = pctldev->desc->confops;
        int i, ret;

        if (!ops) {
                dev_err(pctldev->dev, "missing confops\n");
                return -EINVAL;
        }

        switch (setting->type) {
        case PIN_MAP_TYPE_CONFIGS_PIN:
                if (!ops->pin_config_set) {
                        dev_err(pctldev->dev, "missing pin_config_set op\n");
                        return -EINVAL;
                }
                for (i = 0; i < setting->data.configs.num_configs; i++) {
                        ret = ops->pin_config_set(pctldev,
                                        setting->data.configs.group_or_pin,
                                        setting->data.configs.configs[i]);
                        if (ret < 0) {
                                dev_err(pctldev->dev,
                                        "pin_config_set op failed for pin %d config %08lx\n",
                                        setting->data.configs.group_or_pin,
                                        setting->data.configs.configs[i]);
                                return ret;
                        }
                }
                break;
        case PIN_MAP_TYPE_CONFIGS_GROUP:
                if (!ops->pin_config_group_set) {
                        dev_err(pctldev->dev,
                                "missing pin_config_group_set op\n");
                        return -EINVAL;
                }
                for (i = 0; i < setting->data.configs.num_configs; i++) {
                        ret = ops->pin_config_group_set(pctldev,
                                        setting->data.configs.group_or_pin,
                                        setting->data.configs.configs[i]);
                        if (ret < 0) {
                                dev_err(pctldev->dev,
                                        "pin_config_group_set op failed for group %d config %08lx\n",
                                        setting->data.configs.group_or_pin,
                                        setting->data.configs.configs[i]);
                                return ret;
                        }
                }
                break;
        default:
                return -EINVAL;
        }

        return 0;
}

#ifdef CONFIG_DEBUG_FS

void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map)
{
        struct pinctrl_dev *pctldev;
        const struct pinconf_ops *confops;
        int i;

        pctldev = get_pinctrl_dev_from_devname(map->ctrl_dev_name);
        if (pctldev)
                confops = pctldev->desc->confops;
        else
                confops = NULL;

        switch (map->type) {
        case PIN_MAP_TYPE_CONFIGS_PIN:
                seq_printf(s, "pin ");
                break;
        case PIN_MAP_TYPE_CONFIGS_GROUP:
                seq_printf(s, "group ");
                break;
        default:
                break;
        }

        seq_printf(s, "%s\n", map->data.configs.group_or_pin);

        for (i = 0; i < map->data.configs.num_configs; i++) {
                seq_printf(s, "config ");
                if (confops && confops->pin_config_config_dbg_show)
                        confops->pin_config_config_dbg_show(pctldev, s,
                                                map->data.configs.configs[i]);
                else
                        seq_printf(s, "%08lx", map->data.configs.configs[i]);
                seq_printf(s, "\n");
        }
}

void pinconf_show_setting(struct seq_file *s,
                          struct pinctrl_setting const *setting)
{
        struct pinctrl_dev *pctldev = setting->pctldev;
        const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
        const struct pinconf_ops *confops = pctldev->desc->confops;
        struct pin_desc *desc;
        int i;

        switch (setting->type) {
        case PIN_MAP_TYPE_CONFIGS_PIN:
                desc = pin_desc_get(setting->pctldev,
                                    setting->data.configs.group_or_pin);
                seq_printf(s, "pin %s (%d)",
                           desc->name ? desc->name : "unnamed",
                           setting->data.configs.group_or_pin);
                break;
        case PIN_MAP_TYPE_CONFIGS_GROUP:
                seq_printf(s, "group %s (%d)",
                           pctlops->get_group_name(pctldev,
                                        setting->data.configs.group_or_pin),
                           setting->data.configs.group_or_pin);
                break;
        default:
                break;
        }

        /*
         * FIXME: We should really get the pin controler to dump the config
         * values, so they can be decoded to something meaningful.
         */
        for (i = 0; i < setting->data.configs.num_configs; i++) {
                seq_printf(s, " ");
                if (confops && confops->pin_config_config_dbg_show)
                        confops->pin_config_config_dbg_show(pctldev, s,
                                setting->data.configs.configs[i]);
                else
                        seq_printf(s, "%08lx",
                                   setting->data.configs.configs[i]);
        }

        seq_printf(s, "\n");
}

static void pinconf_dump_pin(struct pinctrl_dev *pctldev,
                             struct seq_file *s, int pin)
{
        const struct pinconf_ops *ops = pctldev->desc->confops;

        /* no-op when not using generic pin config */
        pinconf_generic_dump_pin(pctldev, s, pin);
        if (ops && ops->pin_config_dbg_show)
                ops->pin_config_dbg_show(pctldev, s, pin);
}

static int pinconf_pins_show(struct seq_file *s, void *what)
{
        struct pinctrl_dev *pctldev = s->private;
        const struct pinconf_ops *ops = pctldev->desc->confops;
        unsigned i, pin;

        if (!ops || !ops->pin_config_get)
                return 0;

        seq_puts(s, "Pin config settings per pin\n");
        seq_puts(s, "Format: pin (name): configs\n");

        mutex_lock(&pctldev->mutex);

        /* The pin number can be retrived from the pin controller descriptor */
        for (i = 0; i < pctldev->desc->npins; i++) {
                struct pin_desc *desc;

                pin = pctldev->desc->pins[i].number;
                desc = pin_desc_get(pctldev, pin);
                /* Skip if we cannot search the pin */
                if (desc == NULL)
                        continue;

                seq_printf(s, "pin %d (%s):", pin,
                           desc->name ? desc->name : "unnamed");

                pinconf_dump_pin(pctldev, s, pin);

                seq_printf(s, "\n");
        }

        mutex_unlock(&pctldev->mutex);

        return 0;
}

static void pinconf_dump_group(struct pinctrl_dev *pctldev,
                               struct seq_file *s, unsigned selector,
                               const char *gname)
{
        const struct pinconf_ops *ops = pctldev->desc->confops;

        /* no-op when not using generic pin config */
        pinconf_generic_dump_group(pctldev, s, gname);
        if (ops && ops->pin_config_group_dbg_show)
                ops->pin_config_group_dbg_show(pctldev, s, selector);
}

static int pinconf_groups_show(struct seq_file *s, void *what)
{
        struct pinctrl_dev *pctldev = s->private;
        const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
        const struct pinconf_ops *ops = pctldev->desc->confops;
        unsigned ngroups = pctlops->get_groups_count(pctldev);
        unsigned selector = 0;

        if (!ops || !ops->pin_config_group_get)
                return 0;

        seq_puts(s, "Pin config settings per pin group\n");
        seq_puts(s, "Format: group (name): configs\n");

        while (selector < ngroups) {
                const char *gname = pctlops->get_group_name(pctldev, selector);

                seq_printf(s, "%u (%s):", selector, gname);
                pinconf_dump_group(pctldev, s, selector, gname);
                seq_printf(s, "\n");

                selector++;
        }

        return 0;
}

static int pinconf_pins_open(struct inode *inode, struct file *file)
{
        return single_open(file, pinconf_pins_show, inode->i_private);
}

static int pinconf_groups_open(struct inode *inode, struct file *file)
{
        return single_open(file, pinconf_groups_show, inode->i_private);
}

static const struct file_operations pinconf_pins_ops = {
        .open           = pinconf_pins_open,
        .read           = seq_read,
        .llseek         = seq_lseek,
        .release        = single_release,
};

static const struct file_operations pinconf_groups_ops = {
        .open           = pinconf_groups_open,
        .read           = seq_read,
        .llseek         = seq_lseek,
        .release        = single_release,
};

#define MAX_NAME_LEN 15

struct dbg_cfg {
        enum pinctrl_map_type map_type;
        char dev_name[MAX_NAME_LEN+1];
        char state_name[MAX_NAME_LEN+1];
        char pin_name[MAX_NAME_LEN+1];
};

/*
 * Goal is to keep this structure as global in order to simply read the
 * pinconf-config file after a write to check config is as expected
 */
static struct dbg_cfg pinconf_dbg_conf;

/**
 * pinconf_dbg_config_print() - display the pinctrl config from the pinctrl
 * map, of the dev/pin/state that was last written to pinconf-config file.
 * @s: string filled in  with config description
 * @d: not used
 */
static int pinconf_dbg_config_print(struct seq_file *s, void *d)
{
        struct pinctrl_maps *maps_node;
        const struct pinctrl_map *map;
        struct pinctrl_dev *pctldev = NULL;
        const struct pinconf_ops *confops = NULL;
        const struct pinctrl_map_configs *configs;
        struct dbg_cfg *dbg = &pinconf_dbg_conf;
        int i, j;
        bool found = false;
        unsigned long config;

        mutex_lock(&pinctrl_maps_mutex);

        /* Parse the pinctrl map and look for the elected pin/state */
        for_each_maps(maps_node, i, map) {
                if (map->type != dbg->map_type)
                        continue;
                if (strcmp(map->dev_name, dbg->dev_name))
                        continue;
                if (strcmp(map->name, dbg->state_name))
                        continue;

                for (j = 0; j < map->data.configs.num_configs; j++) {
                        if (!strcmp(map->data.configs.group_or_pin,
                                        dbg->pin_name)) {
                                /*
                                 * We found the right pin / state, read the
                                 * config and he pctldev for later use
                                 */
                                configs = &map->data.configs;
                                pctldev = get_pinctrl_dev_from_devname
                                        (map->ctrl_dev_name);
                                found = true;
                                break;
                        }
                }
        }

        if (!found) {
                seq_printf(s, "No config found for dev/state/pin, expected:\n");
                seq_printf(s, "Searched dev:%s\n", dbg->dev_name);
                seq_printf(s, "Searched state:%s\n", dbg->state_name);
                seq_printf(s, "Searched pin:%s\n", dbg->pin_name);
                seq_printf(s, "Use: modify config_pin <devname> "\
                                "<state> <pinname> <value>\n");
                goto exit;
        }

        config = *(configs->configs);
        seq_printf(s, "Dev %s has config of %s in state %s: 0x%08lX\n",
                        dbg->dev_name, dbg->pin_name,
                        dbg->state_name, config);

        if (pctldev)
                confops = pctldev->desc->confops;

        if (confops && confops->pin_config_config_dbg_show)
                confops->pin_config_config_dbg_show(pctldev, s, config);

exit:
        mutex_unlock(&pinctrl_maps_mutex);

        return 0;
}

/**
 * pinconf_dbg_config_write() - modify the pinctrl config in the pinctrl
 * map, of a dev/pin/state entry based on user entries to pinconf-config
 * @user_buf: contains the modification request with expected format:
 *     modify config_pin <devicename> <state> <pinname> <newvalue>
 * modify is literal string, alternatives like add/delete not supported yet
 * config_pin is literal, alternatives like config_mux not supported yet
 * <devicename> <state> <pinname> are values that should match the pinctrl-maps
 * <newvalue> reflects the new config and is driver dependant
 */
static int pinconf_dbg_config_write(struct file *file,
        const char __user *user_buf, size_t count, loff_t *ppos)
{
        struct pinctrl_maps *maps_node;
        const struct pinctrl_map *map;
        struct pinctrl_dev *pctldev = NULL;
        const struct pinconf_ops *confops = NULL;
        struct dbg_cfg *dbg = &pinconf_dbg_conf;
        const struct pinctrl_map_configs *configs;
        char config[MAX_NAME_LEN+1];
        bool found = false;
        char buf[128];
        char *b = &buf[0];
        int buf_size;
        char *token;
        int i;

        /* Get userspace string and assure termination */
        buf_size = min(count, (sizeof(buf)-1));
        if (copy_from_user(buf, user_buf, buf_size))
                return -EFAULT;
        buf[buf_size] = 0;

        /*
         * need to parse entry and extract parameters:
         * modify configs_pin devicename state pinname newvalue
         */

        /* Get arg: 'modify' */
        token = strsep(&b, " ");
        if (!token)
                return -EINVAL;
        if (strcmp(token, "modify"))
                return -EINVAL;

        /* Get arg type: "config_pin" type supported so far */
        token = strsep(&b, " ");
        if (!token)
                return -EINVAL;
        if (strcmp(token, "config_pin"))
                return -EINVAL;
        dbg->map_type = PIN_MAP_TYPE_CONFIGS_PIN;

        /* get arg 'device_name' */
        token = strsep(&b, " ");
        if (token == NULL)
                return -EINVAL;
        if (strlen(token) >= MAX_NAME_LEN)
                return -EINVAL;
        strncpy(dbg->dev_name, token, MAX_NAME_LEN);

        /* get arg 'state_name' */
        token = strsep(&b, " ");
        if (token == NULL)
                return -EINVAL;
        if (strlen(token) >= MAX_NAME_LEN)
                return -EINVAL;
        strncpy(dbg->state_name, token, MAX_NAME_LEN);

        /* get arg 'pin_name' */
        token = strsep(&b, " ");
        if (token == NULL)
                return -EINVAL;
        if (strlen(token) >= MAX_NAME_LEN)
                return -EINVAL;
        strncpy(dbg->pin_name, token, MAX_NAME_LEN);

        /* get new_value of config' */
        token = strsep(&b, " ");
        if (token == NULL)
                return -EINVAL;
        if (strlen(token) >= MAX_NAME_LEN)
                return -EINVAL;
        strncpy(config, token, MAX_NAME_LEN);

        mutex_lock(&pinctrl_maps_mutex);

        /* Parse the pinctrl map and look for the selected dev/state/pin */
        for_each_maps(maps_node, i, map) {
                if (strcmp(map->dev_name, dbg->dev_name))
                        continue;
                if (map->type != dbg->map_type)
                        continue;
                if (strcmp(map->name, dbg->state_name))
                        continue;

                /*  we found the right pin / state, so overwrite config */
                if (!strcmp(map->data.configs.group_or_pin, dbg->pin_name)) {
                        found = true;
                        pctldev = get_pinctrl_dev_from_devname(
                                        map->ctrl_dev_name);
                        configs = &map->data.configs;
                        break;
                }
        }

        if (!found) {
                count = -EINVAL;
                goto exit;
        }

        if (pctldev)
                confops = pctldev->desc->confops;

        if (confops && confops->pin_config_dbg_parse_modify) {
                for (i = 0; i < configs->num_configs; i++) {
                        confops->pin_config_dbg_parse_modify(pctldev,
                                                     config,
                                                     &configs->configs[i]);
                }
        }

exit:
        mutex_unlock(&pinctrl_maps_mutex);

        return count;
}

static int pinconf_dbg_config_open(struct inode *inode, struct file *file)
{
        return single_open(file, pinconf_dbg_config_print, inode->i_private);
}

static const struct file_operations pinconf_dbg_pinconfig_fops = {
        .open = pinconf_dbg_config_open,
        .write = pinconf_dbg_config_write,
        .read = seq_read,
        .llseek = seq_lseek,
        .release = single_release,
        .owner = THIS_MODULE,
};

void pinconf_init_device_debugfs(struct dentry *devroot,
                         struct pinctrl_dev *pctldev)
{
        debugfs_create_file("pinconf-pins", S_IFREG | S_IRUGO,
                            devroot, pctldev, &pinconf_pins_ops);
        debugfs_create_file("pinconf-groups", S_IFREG | S_IRUGO,
                            devroot, pctldev, &pinconf_groups_ops);
        debugfs_create_file("pinconf-config",  (S_IRUGO | S_IWUSR | S_IWGRP),
                            devroot, pctldev, &pinconf_dbg_pinconfig_fops);
}

#endif