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e9a26010f6
In some configurations, this function uses more than the warning limit of 1024 bytes: drivers/net/wireless/ath/ath9k/ar9003_aic.c: In function 'ar9003_aic_cal_post_process': drivers/net/wireless/ath/ath9k/ar9003_aic.c:434:1: error: the frame size of 1040 bytes is larger than 1024 bytes [-Werror=frame-larger-than=] It turns out that there are two large arrays on the stack here, but almost all the data in them is never used outside of the loop in which it gets written, so we can replace the array with a single instance. The .valid flag is used later, so I'm replacing the array of structures with an array of bools. An obvious follow-up optimization would be to replace it with a bitmask and set_bit()/find_first_bit()/ find_last_bit()/... operations. However, I have not tested this patch, so I sticked to the simpler transformation that does the job of reducing the stack usage to a harmless level. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/*
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* Copyright (c) 2015 Qualcomm Atheros Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef AR9003_AIC_H
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#define AR9003_AIC_H
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#define ATH_AIC_MAX_COM_ATT_DB_TABLE 6
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#define ATH_AIC_MAX_AIC_LIN_TABLE 69
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#define ATH_AIC_MIN_ROT_DIR_ATT_DB 0
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#define ATH_AIC_MIN_ROT_QUAD_ATT_DB 0
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#define ATH_AIC_MAX_ROT_DIR_ATT_DB 37
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#define ATH_AIC_MAX_ROT_QUAD_ATT_DB 37
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#define ATH_AIC_SRAM_AUTO_INCREMENT 0x80000000
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#define ATH_AIC_SRAM_GAIN_TABLE_OFFSET 0x280
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#define ATH_AIC_SRAM_CAL_OFFSET 0x140
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#define ATH_AIC_SRAM_OFFSET 0x00
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#define ATH_AIC_MEAS_MAG_THRESH 20
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#define ATH_AIC_BT_JUPITER_CTRL 0x66820
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#define ATH_AIC_BT_AIC_ENABLE 0x02
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enum aic_cal_state {
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AIC_CAL_STATE_IDLE = 0,
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AIC_CAL_STATE_STARTED,
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AIC_CAL_STATE_DONE,
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AIC_CAL_STATE_ERROR
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};
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struct ath_aic_sram_info {
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bool valid:1;
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bool vga_quad_sign:1;
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bool vga_dir_sign:1;
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u8 rot_quad_att_db;
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u8 rot_dir_att_db;
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u8 com_att_6db;
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};
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struct ath_aic_out_info {
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int16_t dir_path_gain_lin;
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int16_t quad_path_gain_lin;
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};
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u8 ar9003_aic_calibration(struct ath_hw *ah);
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u8 ar9003_aic_start_normal(struct ath_hw *ah);
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u8 ar9003_aic_cal_reset(struct ath_hw *ah);
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u8 ar9003_aic_calibration_single(struct ath_hw *ah);
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#endif /* AR9003_AIC_H */
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