mirror of https://gitee.com/openkylin/linux.git
211 lines
6.1 KiB
C
211 lines
6.1 KiB
C
/******************************************************************************
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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#include "iwl-dev.h"
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#include "iwl-core.h"
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#include "iwl-io.h"
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#include "iwl-agn.h"
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#include "iwl-trans.h"
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int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
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{
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struct iwl_tx_ant_config_cmd tx_ant_cmd = {
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.valid = cpu_to_le32(valid_tx_ant),
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};
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if (IWL_UCODE_API(priv->ucode_ver) > 1) {
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IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
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return trans_send_cmd_pdu(priv,
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TX_ANT_CONFIGURATION_CMD,
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CMD_SYNC,
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sizeof(struct iwl_tx_ant_config_cmd),
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&tx_ant_cmd);
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} else {
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IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
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return -EOPNOTSUPP;
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}
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}
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void iwlagn_gain_computation(struct iwl_priv *priv,
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u32 average_noise[NUM_RX_CHAINS],
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u16 min_average_noise_antenna_i,
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u32 min_average_noise,
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u8 default_chain)
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{
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int i;
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s32 delta_g;
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struct iwl_chain_noise_data *data = &priv->chain_noise_data;
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/*
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* Find Gain Code for the chains based on "default chain"
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*/
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for (i = default_chain + 1; i < NUM_RX_CHAINS; i++) {
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if ((data->disconn_array[i])) {
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data->delta_gain_code[i] = 0;
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continue;
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}
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delta_g = (priv->cfg->base_params->chain_noise_scale *
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((s32)average_noise[default_chain] -
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(s32)average_noise[i])) / 1500;
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/* bound gain by 2 bits value max, 3rd bit is sign */
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data->delta_gain_code[i] =
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min(abs(delta_g), (long) CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
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if (delta_g < 0)
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/*
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* set negative sign ...
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* note to Intel developers: This is uCode API format,
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* not the format of any internal device registers.
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* Do not change this format for e.g. 6050 or similar
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* devices. Change format only if more resolution
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* (i.e. more than 2 bits magnitude) is needed.
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*/
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data->delta_gain_code[i] |= (1 << 2);
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}
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IWL_DEBUG_CALIB(priv, "Delta gains: ANT_B = %d ANT_C = %d\n",
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data->delta_gain_code[1], data->delta_gain_code[2]);
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if (!data->radio_write) {
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struct iwl_calib_chain_noise_gain_cmd cmd;
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memset(&cmd, 0, sizeof(cmd));
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iwl_set_calib_hdr(&cmd.hdr,
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priv->_agn.phy_calib_chain_noise_gain_cmd);
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cmd.delta_gain_1 = data->delta_gain_code[1];
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cmd.delta_gain_2 = data->delta_gain_code[2];
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trans_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
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CMD_ASYNC, sizeof(cmd), &cmd);
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data->radio_write = 1;
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data->state = IWL_CHAIN_NOISE_CALIBRATED;
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}
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}
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int iwlagn_set_pan_params(struct iwl_priv *priv)
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{
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struct iwl_wipan_params_cmd cmd;
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struct iwl_rxon_context *ctx_bss, *ctx_pan;
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int slot0 = 300, slot1 = 0;
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int ret;
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if (priv->valid_contexts == BIT(IWL_RXON_CTX_BSS))
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return 0;
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BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
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lockdep_assert_held(&priv->mutex);
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ctx_bss = &priv->contexts[IWL_RXON_CTX_BSS];
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ctx_pan = &priv->contexts[IWL_RXON_CTX_PAN];
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/*
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* If the PAN context is inactive, then we don't need
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* to update the PAN parameters, the last thing we'll
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* have done before it goes inactive is making the PAN
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* parameters be WLAN-only.
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*/
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if (!ctx_pan->is_active)
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return 0;
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memset(&cmd, 0, sizeof(cmd));
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/* only 2 slots are currently allowed */
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cmd.num_slots = 2;
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cmd.slots[0].type = 0; /* BSS */
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cmd.slots[1].type = 1; /* PAN */
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if (priv->_agn.hw_roc_channel) {
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/* both contexts must be used for this to happen */
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slot1 = priv->_agn.hw_roc_duration;
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slot0 = IWL_MIN_SLOT_TIME;
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} else if (ctx_bss->vif && ctx_pan->vif) {
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int bcnint = ctx_pan->vif->bss_conf.beacon_int;
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int dtim = ctx_pan->vif->bss_conf.dtim_period ?: 1;
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/* should be set, but seems unused?? */
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cmd.flags |= cpu_to_le16(IWL_WIPAN_PARAMS_FLG_SLOTTED_MODE);
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if (ctx_pan->vif->type == NL80211_IFTYPE_AP &&
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bcnint &&
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bcnint != ctx_bss->vif->bss_conf.beacon_int) {
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IWL_ERR(priv,
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"beacon intervals don't match (%d, %d)\n",
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ctx_bss->vif->bss_conf.beacon_int,
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ctx_pan->vif->bss_conf.beacon_int);
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} else
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bcnint = max_t(int, bcnint,
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ctx_bss->vif->bss_conf.beacon_int);
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if (!bcnint)
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bcnint = DEFAULT_BEACON_INTERVAL;
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slot0 = bcnint / 2;
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slot1 = bcnint - slot0;
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if (test_bit(STATUS_SCAN_HW, &priv->status) ||
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(!ctx_bss->vif->bss_conf.idle &&
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!ctx_bss->vif->bss_conf.assoc)) {
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slot0 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME;
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slot1 = IWL_MIN_SLOT_TIME;
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} else if (!ctx_pan->vif->bss_conf.idle &&
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!ctx_pan->vif->bss_conf.assoc) {
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slot1 = bcnint * 3 - IWL_MIN_SLOT_TIME;
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slot0 = IWL_MIN_SLOT_TIME;
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}
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} else if (ctx_pan->vif) {
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slot0 = 0;
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slot1 = max_t(int, 1, ctx_pan->vif->bss_conf.dtim_period) *
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ctx_pan->vif->bss_conf.beacon_int;
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slot1 = max_t(int, DEFAULT_BEACON_INTERVAL, slot1);
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if (test_bit(STATUS_SCAN_HW, &priv->status)) {
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slot0 = slot1 * 3 - IWL_MIN_SLOT_TIME;
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slot1 = IWL_MIN_SLOT_TIME;
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}
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}
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cmd.slots[0].width = cpu_to_le16(slot0);
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cmd.slots[1].width = cpu_to_le16(slot1);
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ret = trans_send_cmd_pdu(priv, REPLY_WIPAN_PARAMS, CMD_SYNC,
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sizeof(cmd), &cmd);
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if (ret)
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IWL_ERR(priv, "Error setting PAN parameters (%d)\n", ret);
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return ret;
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}
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