pinctrl/pinconf: partial revert of pin config debugfs

I accidentally left this patch:

commit 6f9e41f4e673bf9ae6a5c0831b1524a91ea1c440
"pinctrl/pinconfig: add debug interface"

in the tree though the patch was not yet finished.
Revert it partially (we need the infrastructural changes).

Cc: Laurent Meunier <laurent.meunier@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c
index 8aefd28..baee2cc 100644 (file)
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -574,207 +574,6 @@ static const struct file_operations pinconf_groups_ops = {
        .release        = single_release,
 };
 
-/* 32bit read/write ressources */
-#define MAX_NAME_LEN 16
-char dbg_pinname[MAX_NAME_LEN]; /* shared: name of the state of the pin*/
-char dbg_state_name[MAX_NAME_LEN]; /* shared: state of the pin*/
-static u32 dbg_config; /* shared: config to be read/set for the pin & state*/
-
-static int pinconf_dbg_pinname_print(struct seq_file *s, void *d)
-{
-       if (strlen(dbg_pinname))
-               seq_printf(s, "%s\n", dbg_pinname);
-       else
-               seq_printf(s, "No pin name set\n");
-       return 0;
-}
-
-static int pinconf_dbg_pinname_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, pinconf_dbg_pinname_print, inode->i_private);
-}
-
-static int pinconf_dbg_pinname_write(struct file *file,
-       const char __user *user_buf, size_t count, loff_t *ppos)
-{
-       int err;
-
-       if (count > MAX_NAME_LEN)
-               return -EINVAL;
-
-       err = sscanf(user_buf, "%15s", dbg_pinname);
-
-       if (err != 1)
-               return -EINVAL;
-
-       return count;
-}
-
-static const struct file_operations pinconf_dbg_pinname_fops = {
-       .open = pinconf_dbg_pinname_open,
-       .write = pinconf_dbg_pinname_write,
-       .read = seq_read,
-       .llseek = seq_lseek,
-       .release = single_release,
-       .owner = THIS_MODULE,
-};
-
-static int pinconf_dbg_state_print(struct seq_file *s, void *d)
-{
-       if (strlen(dbg_state_name))
-               seq_printf(s, "%s\n", dbg_pinname);
-       else
-               seq_printf(s, "No pin state set\n");
-       return 0;
-}
-
-static int pinconf_dbg_state_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, pinconf_dbg_state_print, inode->i_private);
-}
-
-static int pinconf_dbg_state_write(struct file *file,
-       const char __user *user_buf, size_t count, loff_t *ppos)
-{
-       int err;
-
-       if (count > MAX_NAME_LEN)
-               return -EINVAL;
-
-       err = sscanf(user_buf, "%15s", dbg_state_name);
-
-       if (err != 1)
-               return -EINVAL;
-
-       return count;
-}
-
-static const struct file_operations pinconf_dbg_pinstate_fops = {
-       .open = pinconf_dbg_state_open,
-       .write = pinconf_dbg_state_write,
-       .read = seq_read,
-       .llseek = seq_lseek,
-       .release = single_release,
-       .owner = THIS_MODULE,
-};
-
-/**
- * pinconf_dbg_config_print() - display the pinctrl config from the pinctrl
- * map, of a pin/state pair based on pinname and state that have been
- * selected with the debugfs entries pinconf-name and pinconf-state
- * @s: contains the 32bits config to be written
- * @d: not used
- */
-static int pinconf_dbg_config_print(struct seq_file *s, void *d)
-{
-       struct pinctrl_maps *maps_node;
-       struct pinctrl_map const *map;
-       struct pinctrl_dev *pctldev = NULL;
-       const struct pinconf_ops *confops = NULL;
-       int i, j;
-       bool found = false;
-
-       mutex_lock(&pinctrl_mutex);
-
-       /* Parse the pinctrl map and look for the elected pin/state */
-       for_each_maps(maps_node, i, map) {
-               if (map->type != PIN_MAP_TYPE_CONFIGS_PIN)
-                       continue;
-
-               if (strncmp(map->name, dbg_state_name, MAX_NAME_LEN) > 0)
-                       continue;
-
-               for (j = 0; j < map->data.configs.num_configs; j++) {
-                       if (0 == strncmp(map->data.configs.group_or_pin,
-                                               dbg_pinname, MAX_NAME_LEN)) {
-                               /* We found the right pin / state, read the
-                                * config and store the pctldev */
-                               dbg_config = map->data.configs.configs[j];
-                               pctldev = get_pinctrl_dev_from_devname
-                                       (map->ctrl_dev_name);
-                               found = true;
-                               break;
-                       }
-               }
-       }
-
-       mutex_unlock(&pinctrl_mutex);
-
-       if (found) {
-               seq_printf(s, "Config of %s in state %s: 0x%08X\n", dbg_pinname,
-                                dbg_state_name, dbg_config);
-
-               if (pctldev)
-                       confops = pctldev->desc->confops;
-
-               if (confops && confops->pin_config_config_dbg_show)
-                       confops->pin_config_config_dbg_show(pctldev,
-                                       s, dbg_config);
-       } else {
-               seq_printf(s, "No pin found for defined name/state\n");
-       }
-
-       return 0;
-}
-
-static int pinconf_dbg_config_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, pinconf_dbg_config_print, inode->i_private);
-}
-
-/**
- * pinconf_dbg_config_write() - overwrite the pinctrl config in thepinctrl
- * map, of a pin/state pair based on pinname and state that have been
- * selected with the debugfs entries pinconf-name and pinconf-state
- */
-static int pinconf_dbg_config_write(struct file *file,
-       const char __user *user_buf, size_t count, loff_t *ppos)
-{
-       int err;
-       unsigned long config;
-       struct pinctrl_maps *maps_node;
-       struct pinctrl_map const *map;
-       int i, j;
-
-       err = kstrtoul_from_user(user_buf, count, 0, &config);
-
-       if (err)
-               return err;
-
-       dbg_config = config;
-
-       mutex_lock(&pinctrl_mutex);
-
-       /* Parse the pinctrl map and look for the selected pin/state */
-       for_each_maps(maps_node, i, map) {
-               if (map->type != PIN_MAP_TYPE_CONFIGS_PIN)
-                       continue;
-
-               if (strncmp(map->name, dbg_state_name, MAX_NAME_LEN) > 0)
-                       continue;
-
-               /*  we found the right pin / state, so overwrite config */
-               for (j = 0; j < map->data.configs.num_configs; j++) {
-                       if (strncmp(map->data.configs.group_or_pin, dbg_pinname,
-                                               MAX_NAME_LEN) == 0)
-                               map->data.configs.configs[j] = dbg_config;
-               }
-       }
-
-       mutex_unlock(&pinctrl_mutex);
-
-       return count;
-}
-
-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)
 {
@@ -782,12 +581,6 @@ void pinconf_init_device_debugfs(struct dentry *devroot,
                            devroot, pctldev, &pinconf_pins_ops);
        debugfs_create_file("pinconf-groups", S_IFREG | S_IRUGO,
                            devroot, pctldev, &pinconf_groups_ops);
-       debugfs_create_file("pinconf-name", (S_IRUGO | S_IWUSR | S_IWGRP),
-                           devroot, pctldev, &pinconf_dbg_pinname_fops);
-       debugfs_create_file("pinconf-state",  (S_IRUGO | S_IWUSR | S_IWGRP),
-                           devroot, pctldev, &pinconf_dbg_pinstate_fops);
-       debugfs_create_file("pinconf-config",  (S_IRUGO | S_IWUSR | S_IWGRP),
-                           devroot, pctldev, &pinconf_dbg_pinconfig_fops);
 }
 
 #endif