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440 lines
10 KiB
440 lines
10 KiB
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
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/* |
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* Copyright (C) 2005-2014, 2020 Intel Corporation |
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* Copyright (C) 2016 Intel Deutschland GmbH |
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*/ |
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#include <linux/slab.h> |
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#include <linux/string.h> |
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#include <linux/export.h> |
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#include "iwl-drv.h" |
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#include "iwl-phy-db.h" |
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#include "iwl-debug.h" |
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#include "iwl-op-mode.h" |
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#include "iwl-trans.h" |
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#define CHANNEL_NUM_SIZE 4 /* num of channels in calib_ch size */ |
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struct iwl_phy_db_entry { |
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u16 size; |
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u8 *data; |
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}; |
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/** |
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* struct iwl_phy_db - stores phy configuration and calibration data. |
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* |
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* @cfg: phy configuration. |
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* @calib_nch: non channel specific calibration data. |
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* @n_group_papd: number of entries in papd channel group. |
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* @calib_ch_group_papd: calibration data related to papd channel group. |
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* @n_group_txp: number of entries in tx power channel group. |
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* @calib_ch_group_txp: calibration data related to tx power chanel group. |
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* @trans: transport layer |
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*/ |
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struct iwl_phy_db { |
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struct iwl_phy_db_entry cfg; |
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struct iwl_phy_db_entry calib_nch; |
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int n_group_papd; |
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struct iwl_phy_db_entry *calib_ch_group_papd; |
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int n_group_txp; |
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struct iwl_phy_db_entry *calib_ch_group_txp; |
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struct iwl_trans *trans; |
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}; |
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enum iwl_phy_db_section_type { |
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IWL_PHY_DB_CFG = 1, |
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IWL_PHY_DB_CALIB_NCH, |
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IWL_PHY_DB_UNUSED, |
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IWL_PHY_DB_CALIB_CHG_PAPD, |
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IWL_PHY_DB_CALIB_CHG_TXP, |
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IWL_PHY_DB_MAX |
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}; |
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#define PHY_DB_CMD 0x6c |
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/* for parsing of tx power channel group data that comes from the firmware*/ |
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struct iwl_phy_db_chg_txp { |
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__le32 space; |
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__le16 max_channel_idx; |
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} __packed; |
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struct iwl_phy_db *iwl_phy_db_init(struct iwl_trans *trans) |
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{ |
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struct iwl_phy_db *phy_db = kzalloc(sizeof(struct iwl_phy_db), |
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GFP_KERNEL); |
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if (!phy_db) |
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return phy_db; |
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phy_db->trans = trans; |
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phy_db->n_group_txp = -1; |
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phy_db->n_group_papd = -1; |
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/* TODO: add default values of the phy db. */ |
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return phy_db; |
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} |
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IWL_EXPORT_SYMBOL(iwl_phy_db_init); |
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/* |
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* get phy db section: returns a pointer to a phy db section specified by |
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* type and channel group id. |
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*/ |
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static struct iwl_phy_db_entry * |
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iwl_phy_db_get_section(struct iwl_phy_db *phy_db, |
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enum iwl_phy_db_section_type type, |
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u16 chg_id) |
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{ |
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if (!phy_db || type >= IWL_PHY_DB_MAX) |
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return NULL; |
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switch (type) { |
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case IWL_PHY_DB_CFG: |
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return &phy_db->cfg; |
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case IWL_PHY_DB_CALIB_NCH: |
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return &phy_db->calib_nch; |
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case IWL_PHY_DB_CALIB_CHG_PAPD: |
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if (chg_id >= phy_db->n_group_papd) |
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return NULL; |
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return &phy_db->calib_ch_group_papd[chg_id]; |
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case IWL_PHY_DB_CALIB_CHG_TXP: |
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if (chg_id >= phy_db->n_group_txp) |
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return NULL; |
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return &phy_db->calib_ch_group_txp[chg_id]; |
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default: |
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return NULL; |
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} |
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return NULL; |
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} |
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static void iwl_phy_db_free_section(struct iwl_phy_db *phy_db, |
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enum iwl_phy_db_section_type type, |
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u16 chg_id) |
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{ |
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struct iwl_phy_db_entry *entry = |
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iwl_phy_db_get_section(phy_db, type, chg_id); |
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if (!entry) |
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return; |
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kfree(entry->data); |
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entry->data = NULL; |
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entry->size = 0; |
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} |
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void iwl_phy_db_free(struct iwl_phy_db *phy_db) |
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{ |
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int i; |
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if (!phy_db) |
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return; |
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iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CFG, 0); |
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iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CALIB_NCH, 0); |
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for (i = 0; i < phy_db->n_group_papd; i++) |
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iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CALIB_CHG_PAPD, i); |
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kfree(phy_db->calib_ch_group_papd); |
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for (i = 0; i < phy_db->n_group_txp; i++) |
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iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CALIB_CHG_TXP, i); |
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kfree(phy_db->calib_ch_group_txp); |
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kfree(phy_db); |
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} |
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IWL_EXPORT_SYMBOL(iwl_phy_db_free); |
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int iwl_phy_db_set_section(struct iwl_phy_db *phy_db, |
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struct iwl_rx_packet *pkt) |
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{ |
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unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); |
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struct iwl_calib_res_notif_phy_db *phy_db_notif = |
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(struct iwl_calib_res_notif_phy_db *)pkt->data; |
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enum iwl_phy_db_section_type type; |
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u16 size; |
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struct iwl_phy_db_entry *entry; |
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u16 chg_id = 0; |
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if (pkt_len < sizeof(*phy_db_notif)) |
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return -EINVAL; |
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type = le16_to_cpu(phy_db_notif->type); |
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size = le16_to_cpu(phy_db_notif->length); |
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if (pkt_len < sizeof(*phy_db_notif) + size) |
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return -EINVAL; |
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if (!phy_db) |
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return -EINVAL; |
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if (type == IWL_PHY_DB_CALIB_CHG_PAPD) { |
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chg_id = le16_to_cpup((__le16 *)phy_db_notif->data); |
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if (phy_db && !phy_db->calib_ch_group_papd) { |
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/* |
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* Firmware sends the largest index first, so we can use |
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* it to know how much we should allocate. |
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*/ |
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phy_db->calib_ch_group_papd = kcalloc(chg_id + 1, |
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sizeof(struct iwl_phy_db_entry), |
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GFP_ATOMIC); |
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if (!phy_db->calib_ch_group_papd) |
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return -ENOMEM; |
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phy_db->n_group_papd = chg_id + 1; |
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} |
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} else if (type == IWL_PHY_DB_CALIB_CHG_TXP) { |
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chg_id = le16_to_cpup((__le16 *)phy_db_notif->data); |
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if (phy_db && !phy_db->calib_ch_group_txp) { |
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/* |
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* Firmware sends the largest index first, so we can use |
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* it to know how much we should allocate. |
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*/ |
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phy_db->calib_ch_group_txp = kcalloc(chg_id + 1, |
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sizeof(struct iwl_phy_db_entry), |
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GFP_ATOMIC); |
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if (!phy_db->calib_ch_group_txp) |
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return -ENOMEM; |
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phy_db->n_group_txp = chg_id + 1; |
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} |
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} |
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entry = iwl_phy_db_get_section(phy_db, type, chg_id); |
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if (!entry) |
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return -EINVAL; |
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kfree(entry->data); |
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entry->data = kmemdup(phy_db_notif->data, size, GFP_ATOMIC); |
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if (!entry->data) { |
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entry->size = 0; |
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return -ENOMEM; |
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} |
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entry->size = size; |
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IWL_DEBUG_INFO(phy_db->trans, |
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"%s(%d): [PHYDB]SET: Type %d , Size: %d\n", |
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__func__, __LINE__, type, size); |
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return 0; |
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} |
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IWL_EXPORT_SYMBOL(iwl_phy_db_set_section); |
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static int is_valid_channel(u16 ch_id) |
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{ |
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if (ch_id <= 14 || |
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(36 <= ch_id && ch_id <= 64 && ch_id % 4 == 0) || |
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(100 <= ch_id && ch_id <= 140 && ch_id % 4 == 0) || |
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(145 <= ch_id && ch_id <= 165 && ch_id % 4 == 1)) |
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return 1; |
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return 0; |
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} |
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static u8 ch_id_to_ch_index(u16 ch_id) |
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{ |
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if (WARN_ON(!is_valid_channel(ch_id))) |
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return 0xff; |
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if (ch_id <= 14) |
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return ch_id - 1; |
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if (ch_id <= 64) |
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return (ch_id + 20) / 4; |
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if (ch_id <= 140) |
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return (ch_id - 12) / 4; |
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return (ch_id - 13) / 4; |
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} |
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static u16 channel_id_to_papd(u16 ch_id) |
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{ |
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if (WARN_ON(!is_valid_channel(ch_id))) |
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return 0xff; |
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if (1 <= ch_id && ch_id <= 14) |
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return 0; |
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if (36 <= ch_id && ch_id <= 64) |
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return 1; |
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if (100 <= ch_id && ch_id <= 140) |
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return 2; |
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return 3; |
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} |
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static u16 channel_id_to_txp(struct iwl_phy_db *phy_db, u16 ch_id) |
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{ |
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struct iwl_phy_db_chg_txp *txp_chg; |
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int i; |
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u8 ch_index = ch_id_to_ch_index(ch_id); |
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if (ch_index == 0xff) |
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return 0xff; |
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for (i = 0; i < phy_db->n_group_txp; i++) { |
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txp_chg = (void *)phy_db->calib_ch_group_txp[i].data; |
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if (!txp_chg) |
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return 0xff; |
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/* |
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* Looking for the first channel group that its max channel is |
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* higher then wanted channel. |
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*/ |
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if (le16_to_cpu(txp_chg->max_channel_idx) >= ch_index) |
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return i; |
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} |
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return 0xff; |
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} |
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static |
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int iwl_phy_db_get_section_data(struct iwl_phy_db *phy_db, |
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u32 type, u8 **data, u16 *size, u16 ch_id) |
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{ |
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struct iwl_phy_db_entry *entry; |
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u16 ch_group_id = 0; |
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if (!phy_db) |
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return -EINVAL; |
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/* find wanted channel group */ |
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if (type == IWL_PHY_DB_CALIB_CHG_PAPD) |
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ch_group_id = channel_id_to_papd(ch_id); |
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else if (type == IWL_PHY_DB_CALIB_CHG_TXP) |
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ch_group_id = channel_id_to_txp(phy_db, ch_id); |
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entry = iwl_phy_db_get_section(phy_db, type, ch_group_id); |
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if (!entry) |
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return -EINVAL; |
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*data = entry->data; |
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*size = entry->size; |
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IWL_DEBUG_INFO(phy_db->trans, |
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"%s(%d): [PHYDB] GET: Type %d , Size: %d\n", |
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__func__, __LINE__, type, *size); |
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return 0; |
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} |
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static int iwl_send_phy_db_cmd(struct iwl_phy_db *phy_db, u16 type, |
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u16 length, void *data) |
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{ |
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struct iwl_phy_db_cmd phy_db_cmd; |
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struct iwl_host_cmd cmd = { |
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.id = PHY_DB_CMD, |
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}; |
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IWL_DEBUG_INFO(phy_db->trans, |
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"Sending PHY-DB hcmd of type %d, of length %d\n", |
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type, length); |
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/* Set phy db cmd variables */ |
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phy_db_cmd.type = cpu_to_le16(type); |
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phy_db_cmd.length = cpu_to_le16(length); |
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/* Set hcmd variables */ |
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cmd.data[0] = &phy_db_cmd; |
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cmd.len[0] = sizeof(struct iwl_phy_db_cmd); |
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cmd.data[1] = data; |
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cmd.len[1] = length; |
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cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY; |
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return iwl_trans_send_cmd(phy_db->trans, &cmd); |
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} |
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static int iwl_phy_db_send_all_channel_groups( |
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struct iwl_phy_db *phy_db, |
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enum iwl_phy_db_section_type type, |
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u8 max_ch_groups) |
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{ |
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u16 i; |
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int err; |
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struct iwl_phy_db_entry *entry; |
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/* Send all the channel specific groups to operational fw */ |
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for (i = 0; i < max_ch_groups; i++) { |
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entry = iwl_phy_db_get_section(phy_db, |
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type, |
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i); |
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if (!entry) |
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return -EINVAL; |
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if (!entry->size) |
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continue; |
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/* Send the requested PHY DB section */ |
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err = iwl_send_phy_db_cmd(phy_db, |
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type, |
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entry->size, |
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entry->data); |
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if (err) { |
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IWL_ERR(phy_db->trans, |
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"Can't SEND phy_db section %d (%d), err %d\n", |
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type, i, err); |
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return err; |
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} |
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IWL_DEBUG_INFO(phy_db->trans, |
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"Sent PHY_DB HCMD, type = %d num = %d\n", |
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type, i); |
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} |
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return 0; |
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} |
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int iwl_send_phy_db_data(struct iwl_phy_db *phy_db) |
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{ |
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u8 *data = NULL; |
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u16 size = 0; |
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int err; |
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IWL_DEBUG_INFO(phy_db->trans, |
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"Sending phy db data and configuration to runtime image\n"); |
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/* Send PHY DB CFG section */ |
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err = iwl_phy_db_get_section_data(phy_db, IWL_PHY_DB_CFG, |
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&data, &size, 0); |
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if (err) { |
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IWL_ERR(phy_db->trans, "Cannot get Phy DB cfg section\n"); |
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return err; |
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} |
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err = iwl_send_phy_db_cmd(phy_db, IWL_PHY_DB_CFG, size, data); |
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if (err) { |
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IWL_ERR(phy_db->trans, |
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"Cannot send HCMD of Phy DB cfg section\n"); |
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return err; |
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} |
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err = iwl_phy_db_get_section_data(phy_db, IWL_PHY_DB_CALIB_NCH, |
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&data, &size, 0); |
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if (err) { |
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IWL_ERR(phy_db->trans, |
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"Cannot get Phy DB non specific channel section\n"); |
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return err; |
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} |
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err = iwl_send_phy_db_cmd(phy_db, IWL_PHY_DB_CALIB_NCH, size, data); |
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if (err) { |
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IWL_ERR(phy_db->trans, |
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"Cannot send HCMD of Phy DB non specific channel section\n"); |
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return err; |
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} |
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/* Send all the TXP channel specific data */ |
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err = iwl_phy_db_send_all_channel_groups(phy_db, |
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IWL_PHY_DB_CALIB_CHG_PAPD, |
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phy_db->n_group_papd); |
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if (err) { |
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IWL_ERR(phy_db->trans, |
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"Cannot send channel specific PAPD groups\n"); |
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return err; |
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} |
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/* Send all the TXP channel specific data */ |
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err = iwl_phy_db_send_all_channel_groups(phy_db, |
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IWL_PHY_DB_CALIB_CHG_TXP, |
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phy_db->n_group_txp); |
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if (err) { |
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IWL_ERR(phy_db->trans, |
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"Cannot send channel specific TX power groups\n"); |
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return err; |
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} |
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IWL_DEBUG_INFO(phy_db->trans, |
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"Finished sending phy db non channel data\n"); |
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return 0; |
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} |
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IWL_EXPORT_SYMBOL(iwl_send_phy_db_data);
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