mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-09 01:28:05 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
621
drivers/pinctrl/pinconf.c
Normal file
621
drivers/pinctrl/pinconf.c
Normal file
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@ -0,0 +1,621 @@
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/*
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* Core driver for the pin config portions of the pin control subsystem
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*
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* Copyright (C) 2011 ST-Ericsson SA
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* Written on behalf of Linaro for ST-Ericsson
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*
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* Author: Linus Walleij <linus.walleij@linaro.org>
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*
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* License terms: GNU General Public License (GPL) version 2
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*/
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#define pr_fmt(fmt) "pinconfig core: " fmt
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/uaccess.h>
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#include <linux/pinctrl/machine.h>
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#include <linux/pinctrl/pinctrl.h>
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#include <linux/pinctrl/pinconf.h>
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#include "core.h"
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#include "pinconf.h"
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int pinconf_check_ops(struct pinctrl_dev *pctldev)
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{
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const struct pinconf_ops *ops = pctldev->desc->confops;
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/* We have to be able to config the pins in SOME way */
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if (!ops->pin_config_set && !ops->pin_config_group_set) {
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dev_err(pctldev->dev,
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"pinconf has to be able to set a pins config\n");
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return -EINVAL;
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}
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return 0;
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}
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int pinconf_validate_map(struct pinctrl_map const *map, int i)
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{
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if (!map->data.configs.group_or_pin) {
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pr_err("failed to register map %s (%d): no group/pin given\n",
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map->name, i);
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return -EINVAL;
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}
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if (!map->data.configs.num_configs ||
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!map->data.configs.configs) {
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pr_err("failed to register map %s (%d): no configs given\n",
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map->name, i);
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return -EINVAL;
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}
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return 0;
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}
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int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
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unsigned long *config)
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{
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const struct pinconf_ops *ops = pctldev->desc->confops;
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if (!ops || !ops->pin_config_get) {
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dev_dbg(pctldev->dev, "cannot get pin configuration, missing "
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"pin_config_get() function in driver\n");
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return -ENOTSUPP;
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}
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return ops->pin_config_get(pctldev, pin, config);
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}
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int pin_config_group_get(const char *dev_name, const char *pin_group,
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unsigned long *config)
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{
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struct pinctrl_dev *pctldev;
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const struct pinconf_ops *ops;
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int selector, ret;
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pctldev = get_pinctrl_dev_from_devname(dev_name);
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if (!pctldev) {
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ret = -EINVAL;
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return ret;
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}
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mutex_lock(&pctldev->mutex);
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ops = pctldev->desc->confops;
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if (!ops || !ops->pin_config_group_get) {
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dev_dbg(pctldev->dev, "cannot get configuration for pin "
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"group, missing group config get function in "
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"driver\n");
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ret = -ENOTSUPP;
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goto unlock;
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}
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selector = pinctrl_get_group_selector(pctldev, pin_group);
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if (selector < 0) {
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ret = selector;
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goto unlock;
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}
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ret = ops->pin_config_group_get(pctldev, selector, config);
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unlock:
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mutex_unlock(&pctldev->mutex);
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return ret;
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}
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int pinconf_map_to_setting(struct pinctrl_map const *map,
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struct pinctrl_setting *setting)
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{
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struct pinctrl_dev *pctldev = setting->pctldev;
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int pin;
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switch (setting->type) {
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case PIN_MAP_TYPE_CONFIGS_PIN:
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pin = pin_get_from_name(pctldev,
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map->data.configs.group_or_pin);
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if (pin < 0) {
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dev_err(pctldev->dev, "could not map pin config for \"%s\"",
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map->data.configs.group_or_pin);
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return pin;
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}
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setting->data.configs.group_or_pin = pin;
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break;
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case PIN_MAP_TYPE_CONFIGS_GROUP:
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pin = pinctrl_get_group_selector(pctldev,
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map->data.configs.group_or_pin);
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if (pin < 0) {
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dev_err(pctldev->dev, "could not map group config for \"%s\"",
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map->data.configs.group_or_pin);
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return pin;
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}
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setting->data.configs.group_or_pin = pin;
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break;
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default:
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return -EINVAL;
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}
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setting->data.configs.num_configs = map->data.configs.num_configs;
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setting->data.configs.configs = map->data.configs.configs;
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return 0;
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}
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void pinconf_free_setting(struct pinctrl_setting const *setting)
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{
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}
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int pinconf_apply_setting(struct pinctrl_setting const *setting)
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{
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struct pinctrl_dev *pctldev = setting->pctldev;
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const struct pinconf_ops *ops = pctldev->desc->confops;
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int ret;
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if (!ops) {
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dev_err(pctldev->dev, "missing confops\n");
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return -EINVAL;
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}
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switch (setting->type) {
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case PIN_MAP_TYPE_CONFIGS_PIN:
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if (!ops->pin_config_set) {
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dev_err(pctldev->dev, "missing pin_config_set op\n");
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return -EINVAL;
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}
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ret = ops->pin_config_set(pctldev,
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setting->data.configs.group_or_pin,
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setting->data.configs.configs,
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setting->data.configs.num_configs);
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if (ret < 0) {
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dev_err(pctldev->dev,
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"pin_config_set op failed for pin %d\n",
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setting->data.configs.group_or_pin);
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return ret;
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}
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break;
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case PIN_MAP_TYPE_CONFIGS_GROUP:
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if (!ops->pin_config_group_set) {
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dev_err(pctldev->dev,
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"missing pin_config_group_set op\n");
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return -EINVAL;
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}
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ret = ops->pin_config_group_set(pctldev,
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setting->data.configs.group_or_pin,
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setting->data.configs.configs,
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setting->data.configs.num_configs);
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if (ret < 0) {
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dev_err(pctldev->dev,
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"pin_config_group_set op failed for group %d\n",
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setting->data.configs.group_or_pin);
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return ret;
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}
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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#ifdef CONFIG_DEBUG_FS
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void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map)
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{
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struct pinctrl_dev *pctldev;
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const struct pinconf_ops *confops;
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int i;
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pctldev = get_pinctrl_dev_from_devname(map->ctrl_dev_name);
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if (pctldev)
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confops = pctldev->desc->confops;
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else
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confops = NULL;
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switch (map->type) {
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case PIN_MAP_TYPE_CONFIGS_PIN:
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seq_printf(s, "pin ");
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break;
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case PIN_MAP_TYPE_CONFIGS_GROUP:
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seq_printf(s, "group ");
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break;
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default:
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break;
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}
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seq_printf(s, "%s\n", map->data.configs.group_or_pin);
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for (i = 0; i < map->data.configs.num_configs; i++) {
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seq_printf(s, "config ");
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if (confops && confops->pin_config_config_dbg_show)
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confops->pin_config_config_dbg_show(pctldev, s,
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map->data.configs.configs[i]);
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else
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seq_printf(s, "%08lx", map->data.configs.configs[i]);
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seq_printf(s, "\n");
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}
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}
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void pinconf_show_setting(struct seq_file *s,
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struct pinctrl_setting const *setting)
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{
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struct pinctrl_dev *pctldev = setting->pctldev;
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const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
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const struct pinconf_ops *confops = pctldev->desc->confops;
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struct pin_desc *desc;
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int i;
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switch (setting->type) {
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case PIN_MAP_TYPE_CONFIGS_PIN:
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desc = pin_desc_get(setting->pctldev,
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setting->data.configs.group_or_pin);
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seq_printf(s, "pin %s (%d)",
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desc->name ? desc->name : "unnamed",
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setting->data.configs.group_or_pin);
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break;
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case PIN_MAP_TYPE_CONFIGS_GROUP:
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seq_printf(s, "group %s (%d)",
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pctlops->get_group_name(pctldev,
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setting->data.configs.group_or_pin),
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setting->data.configs.group_or_pin);
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break;
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default:
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break;
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}
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/*
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* FIXME: We should really get the pin controler to dump the config
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* values, so they can be decoded to something meaningful.
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*/
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for (i = 0; i < setting->data.configs.num_configs; i++) {
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seq_printf(s, " ");
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if (confops && confops->pin_config_config_dbg_show)
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confops->pin_config_config_dbg_show(pctldev, s,
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setting->data.configs.configs[i]);
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else
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seq_printf(s, "%08lx",
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setting->data.configs.configs[i]);
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}
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seq_printf(s, "\n");
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}
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static void pinconf_dump_pin(struct pinctrl_dev *pctldev,
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struct seq_file *s, int pin)
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{
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const struct pinconf_ops *ops = pctldev->desc->confops;
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/* no-op when not using generic pin config */
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pinconf_generic_dump_pin(pctldev, s, pin);
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if (ops && ops->pin_config_dbg_show)
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ops->pin_config_dbg_show(pctldev, s, pin);
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}
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static int pinconf_pins_show(struct seq_file *s, void *what)
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{
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struct pinctrl_dev *pctldev = s->private;
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unsigned i, pin;
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seq_puts(s, "Pin config settings per pin\n");
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seq_puts(s, "Format: pin (name): configs\n");
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|
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mutex_lock(&pctldev->mutex);
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|
||||
/* The pin number can be retrived from the pin controller descriptor */
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||||
for (i = 0; i < pctldev->desc->npins; i++) {
|
||||
struct pin_desc *desc;
|
||||
|
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pin = pctldev->desc->pins[i].number;
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desc = pin_desc_get(pctldev, pin);
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/* Skip if we cannot search the pin */
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||||
if (desc == NULL)
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||||
continue;
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||||
|
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seq_printf(s, "pin %d (%s):", pin,
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desc->name ? desc->name : "unnamed");
|
||||
|
||||
pinconf_dump_pin(pctldev, s, pin);
|
||||
|
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seq_printf(s, "\n");
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||||
}
|
||||
|
||||
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;
|
||||
unsigned ngroups = pctlops->get_groups_count(pctldev);
|
||||
unsigned selector = 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;
|
||||
const struct pinctrl_map *found = NULL;
|
||||
struct pinctrl_dev *pctldev;
|
||||
const struct pinconf_ops *confops = NULL;
|
||||
struct dbg_cfg *dbg = &pinconf_dbg_conf;
|
||||
int i, j;
|
||||
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 */
|
||||
found = map;
|
||||
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;
|
||||
}
|
||||
|
||||
pctldev = get_pinctrl_dev_from_devname(found->ctrl_dev_name);
|
||||
config = *found->data.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 ssize_t 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;
|
||||
const struct pinctrl_map *found = NULL;
|
||||
struct pinctrl_dev *pctldev;
|
||||
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];
|
||||
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 = map;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!found) {
|
||||
count = -EINVAL;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
pctldev = get_pinctrl_dev_from_devname(found->ctrl_dev_name);
|
||||
if (pctldev)
|
||||
confops = pctldev->desc->confops;
|
||||
|
||||
if (confops && confops->pin_config_dbg_parse_modify) {
|
||||
configs = &found->data.configs;
|
||||
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
|
||||
Loading…
Add table
Add a link
Reference in a new issue