wireless: Add channel/frequency conversions to ieee80211.h

Added mappings for FHSS, DSSS and OFDM channels - with macros to point
HR DSSS and ERP to the DSSS mappings. Currently just static inline
functions.

Use the new functions in the older fullmac drivers. This eliminates a
number of const static buffers and removes a couple of range checks that
are now redundant.

Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Richard Farina <sidhayn@gmail.com>
Acked-by: Jeroen Vreeken <pe1rxq@amsat.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 8 insertions, 12 deletions

diff --git a/drivers/net/wireless/atmel.c b/drivers/net/wireless/atmel.c
index 4223672c4432..91930a2c3c6b 100644
--- a/drivers/net/wireless/atmel.c
+++ b/drivers/net/wireless/atmel.c
@@ -2204,9 +2204,6 @@ static int atmel_get_frag(struct net_device *dev,
         return 0;
 }
 
-static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
-                                2447, 2452, 2457, 2462, 2467, 2472, 2484 };
-
 static int atmel_set_freq(struct net_device *dev,
                           struct iw_request_info *info,
                           struct iw_freq *fwrq,
@@ -2216,16 +2213,12 @@ static int atmel_set_freq(struct net_device *dev,
         int rc = -EINPROGRESS;          /* Call commit handler */
 
         /* If setting by frequency, convert to a channel */
-        if ((fwrq->e == 1) &&
-            (fwrq->m >= (int) 241200000) &&
-            (fwrq->m <= (int) 248700000)) {
+        if (fwrq->e == 1) {
                 int f = fwrq->m / 100000;
-                int c = 0;
-                while ((c < 14) && (f != frequency_list[c]))
-                        c++;
+
                 /* Hack to fall through... */
                 fwrq->e = 0;
-                fwrq->m = c + 1;
+                fwrq->m = ieee80211_freq_to_dsss_chan(f);
         }
         /* Setting by channel number */
         if ((fwrq->m > 1000) || (fwrq->e > 0))
@@ -2384,8 +2377,11 @@ static int atmel_get_range(struct net_device *dev,
         if (range->num_channels != 0) {
                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
                         range->freq[k].i = i; /* List index */
-                        range->freq[k].m = frequency_list[i - 1] * 100000;
-                        range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
+
+                        /* Values in MHz -> * 10^5 * 10 */
+                        range->freq[k].m = (ieee80211_dsss_chan_to_freq(i) *
+                                            100000);
+                        range->freq[k++].e = 1;
                 }
                 range->num_frequency = k;
         }