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add wl0_txpwr setting to wificonf
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@2528 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -112,6 +112,64 @@ static int nvram_disabled(char *name)
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}
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/* Quarter dBm units to mW
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* Table starts at QDBM_OFFSET, so the first entry is mW for qdBm=153
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* Table is offset so the last entry is largest mW value that fits in
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* a uint16.
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*/
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#define QDBM_OFFSET 153
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#define QDBM_TABLE_LEN 40
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/* Smallest mW value that will round up to the first table entry, QDBM_OFFSET.
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* Value is ( mW(QDBM_OFFSET - 1) + mW(QDBM_OFFSET) ) / 2
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*/
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#define QDBM_TABLE_LOW_BOUND 6493
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/* Largest mW value that will round down to the last table entry,
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* QDBM_OFFSET + QDBM_TABLE_LEN-1.
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* Value is ( mW(QDBM_OFFSET + QDBM_TABLE_LEN - 1) + mW(QDBM_OFFSET + QDBM_TABLE_LEN) ) / 2.
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*/
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#define QDBM_TABLE_HIGH_BOUND 64938
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static const uint16 nqdBm_to_mW_map[QDBM_TABLE_LEN] = {
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/* qdBm: +0 +1 +2 +3 +4 +5 +6 +7 */
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/* 153: */ 6683, 7079, 7499, 7943, 8414, 8913, 9441, 10000,
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/* 161: */ 10593, 11220, 11885, 12589, 13335, 14125, 14962, 15849,
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/* 169: */ 16788, 17783, 18836, 19953, 21135, 22387, 23714, 25119,
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/* 177: */ 26607, 28184, 29854, 31623, 33497, 35481, 37584, 39811,
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/* 185: */ 42170, 44668, 47315, 50119, 53088, 56234, 59566, 63096
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};
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unsigned char mw_to_qdbm(uint16 mw)
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{
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char qdbm;
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int offset;
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uint mw_uint = mw;
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uint boundary;
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/* handle boundary case */
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if (mw_uint <= 1)
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return 0;
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offset = QDBM_OFFSET;
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/* move mw into the range of the table */
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while (mw_uint < QDBM_TABLE_LOW_BOUND) {
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mw_uint *= 10;
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offset -= 40;
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}
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for (qdbm = 0; qdbm < QDBM_TABLE_LEN-1; qdbm++) {
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boundary = nqdBm_to_mW_map[qdbm] + (nqdBm_to_mW_map[qdbm+1] - nqdBm_to_mW_map[qdbm])/2;
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if (mw_uint < boundary) break;
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}
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qdbm += (unsigned char)offset;
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return(qdbm);
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}
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static int bcom_ioctl(int skfd, char *ifname, int cmd, void *buf, int len)
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{
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struct ifreq ifr;
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@ -523,6 +581,12 @@ static void setup_bcom_common(int skfd, char *ifname)
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buf[3] = 0;
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bcom_ioctl(skfd, ifname, WLC_SET_COUNTRY, buf, 4);
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if (v = nvram_get(wl_var("txpwr"))) {
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val = atoi(v);
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val = mw_to_qdbm(val);
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bcom_set_int(skfd, ifname, "qtxpower", val);
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}
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/* Set other options */
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val = nvram_enabled(wl_var("lazywds"));
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bcom_ioctl(skfd, ifname, WLC_SET_LAZYWDS, &val, sizeof(val));
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