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path: root/drivers/net/wireless/hermes.c
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Diffstat (limited to 'drivers/net/wireless/hermes.c')
-rw-r--r--drivers/net/wireless/hermes.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/net/wireless/hermes.c b/drivers/net/wireless/hermes.c
index eba0d9d2b7c..579480dad37 100644
--- a/drivers/net/wireless/hermes.c
+++ b/drivers/net/wireless/hermes.c
@@ -444,6 +444,43 @@ int hermes_bap_pwrite(hermes_t *hw, int bap, const void *buf, unsigned len,
return err;
}
+/* Write a block of data to the chip's buffer with padding if
+ * neccessary, via the BAP. Synchronization/serialization is the
+ * caller's problem. len must be even.
+ *
+ * Returns: < 0 on internal failure (errno), 0 on success, > 0 on error from firmware
+ */
+int hermes_bap_pwrite_pad(hermes_t *hw, int bap, const void *buf, unsigned data_len, unsigned len,
+ u16 id, u16 offset)
+{
+ int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
+ int err = 0;
+
+ if (len < 0 || len % 2 || data_len > len)
+ return -EINVAL;
+
+ err = hermes_bap_seek(hw, bap, id, offset);
+ if (err)
+ goto out;
+
+ /* Transfer all the complete words of data */
+ hermes_write_words(hw, dreg, buf, data_len/2);
+ /* If there is an odd byte left over pad and transfer it */
+ if (data_len & 1) {
+ u8 end[2];
+ end[1] = 0;
+ end[0] = ((unsigned char *)buf)[data_len - 1];
+ hermes_write_words(hw, dreg, end, 1);
+ data_len ++;
+ }
+ /* Now send zeros for the padding */
+ if (data_len < len)
+ hermes_clear_words(hw, dreg, (len - data_len) / 2);
+ /* Complete */
+ out:
+ return err;
+}
+
/* Read a Length-Type-Value record from the card.
*
* If length is NULL, we ignore the length read from the card, and
@@ -531,6 +568,7 @@ EXPORT_SYMBOL(hermes_allocate);
EXPORT_SYMBOL(hermes_bap_pread);
EXPORT_SYMBOL(hermes_bap_pwrite);
+EXPORT_SYMBOL(hermes_bap_pwrite_pad);
EXPORT_SYMBOL(hermes_read_ltv);
EXPORT_SYMBOL(hermes_write_ltv);