ath9k: add a patch for dumping the eeprom contents via debugfs

SVN-Revision: 22870

diff --git a/package/mac80211/patches/540-ath9k_eeprom_debugfs.patch b/package/mac80211/patches/540-ath9k_eeprom_debugfs.patch
new file mode 100644 (file)
index 0000000..62a5d31
--- /dev/null
+++ b/package/mac80211/patches/540-ath9k_eeprom_debugfs.patch
@@ -0,0 +1,67 @@
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -897,6 +897,53 @@ static const struct file_operations fops
+       .owner = THIS_MODULE
+ };
+ 
++static ssize_t read_file_eeprom(struct file *file, char __user *user_buf,
++                           size_t count, loff_t *ppos)
++{
++      struct ath_softc *sc = file->private_data;
++      struct ath_hw *ah = sc->sc_ah;
++      struct ath_common *common = ath9k_hw_common(ah);
++      int bytes = 0;
++      int pos = *ppos;
++      int size = 4096;
++      u16 val;
++      int i;
++
++      if (AR_SREV_9300_20_OR_LATER(ah))
++              size = 16384;
++
++      if (*ppos < 0)
++              return -EINVAL;
++
++      if (count > size - *ppos)
++              count = size - *ppos;
++
++      for (i = *ppos / 2; count > 0; count -= bytes, *ppos += bytes, i++) {
++              void *from = &val;
++
++              if (!common->bus_ops->eeprom_read(common, i, &val))
++                      val = 0xffff;
++
++              if (*ppos % 2) {
++                      from++;
++                      bytes = 1;
++              } else if (count == 1) {
++                      bytes = 1;
++              } else {
++                      bytes = 2;
++              }
++              copy_to_user(user_buf, from, bytes);
++              user_buf += bytes;
++      }
++      return *ppos - pos;
++}
++
++static const struct file_operations fops_eeprom = {
++      .read = read_file_eeprom,
++      .open = ath9k_debugfs_open,
++      .owner = THIS_MODULE
++};
++
+ int ath9k_init_debug(struct ath_hw *ah)
+ {
+       struct ath_common *common = ath9k_hw_common(ah);
+@@ -960,6 +1007,10 @@ int ath9k_init_debug(struct ath_hw *ah)
+                       sc->debug.debugfs_phy, &ah->config.cwm_ignore_extcca))
+               goto err;
+ 
++      if (!debugfs_create_file("eeprom", S_IRUSR,
++                      sc->debug.debugfs_phy, sc, &fops_eeprom))
++              goto err;
++
+       sc->debug.regidx = 0;
+       return 0;
+ err: