[linux-block.git] / drivers / net / wireless / ath / ath9k / calib.h

/*
 * Copyright (c) 2008-2009 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef CALIB_H
#define CALIB_H

extern const struct ath9k_percal_data iq_cal_multi_sample;
extern const struct ath9k_percal_data iq_cal_single_sample;
extern const struct ath9k_percal_data adc_gain_cal_multi_sample;
extern const struct ath9k_percal_data adc_gain_cal_single_sample;
extern const struct ath9k_percal_data adc_dc_cal_multi_sample;
extern const struct ath9k_percal_data adc_dc_cal_single_sample;
extern const struct ath9k_percal_data adc_init_dc_cal;

#define AR_PHY_CCA_MAX_AR5416_GOOD_VALUE	-85
#define AR_PHY_CCA_MAX_AR9280_GOOD_VALUE	-112
#define AR_PHY_CCA_MAX_AR9285_GOOD_VALUE	-118
#define AR_PHY_CCA_MAX_AR9287_GOOD_VALUE	-118
#define AR_PHY_CCA_MAX_HIGH_VALUE      		-62
#define AR_PHY_CCA_MIN_BAD_VALUE       		-140
#define AR_PHY_CCA_FILTERWINDOW_LENGTH_INIT     3
#define AR_PHY_CCA_FILTERWINDOW_LENGTH          5

#define NUM_NF_READINGS       6
#define ATH9K_NF_CAL_HIST_MAX 5

struct ar5416IniArray {
	u32 *ia_array;
	u32 ia_rows;
	u32 ia_columns;
};

#define INIT_INI_ARRAY(iniarray, array, rows, columns) do {	\
		(iniarray)->ia_array = (u32 *)(array);		\
		(iniarray)->ia_rows = (rows);			\
		(iniarray)->ia_columns = (columns);		\
	} while (0)

#define INI_RA(iniarray, row, column) \
	(((iniarray)->ia_array)[(row) *	((iniarray)->ia_columns) + (column)])

#define INIT_CAL(_perCal) do {				\
		(_perCal)->calState = CAL_WAITING;	\
		(_perCal)->calNext = NULL;		\
	} while (0)

#define INSERT_CAL(_ahp, _perCal)					\
	do {								\
		if ((_ahp)->cal_list_last == NULL) {			\
			(_ahp)->cal_list =				\
				(_ahp)->cal_list_last = (_perCal);	\
			((_ahp)->cal_list_last)->calNext = (_perCal); \
		} else {						\
			((_ahp)->cal_list_last)->calNext = (_perCal); \
			(_ahp)->cal_list_last = (_perCal);		\
			(_perCal)->calNext = (_ahp)->cal_list;	\
		}							\
	} while (0)

enum ath9k_cal_types {
	ADC_DC_INIT_CAL = 0x1,
	ADC_GAIN_CAL = 0x2,
	ADC_DC_CAL = 0x4,
	IQ_MISMATCH_CAL = 0x8
};

enum ath9k_cal_state {
	CAL_INACTIVE,
	CAL_WAITING,
	CAL_RUNNING,
	CAL_DONE
};

#define MIN_CAL_SAMPLES     1
#define MAX_CAL_SAMPLES    64
#define INIT_LOG_COUNT      5
#define PER_MIN_LOG_COUNT   2
#define PER_MAX_LOG_COUNT  10

struct ath9k_percal_data {
	enum ath9k_cal_types calType;
	u32 calNumSamples;
	u32 calCountMax;
	void (*calCollect) (struct ath_hw *);
	void (*calPostProc) (struct ath_hw *, u8);
};

struct ath9k_cal_list {
	const struct ath9k_percal_data *calData;
	enum ath9k_cal_state calState;
	struct ath9k_cal_list *calNext;
};

struct ath9k_nfcal_hist {
	int16_t nfCalBuffer[ATH9K_NF_CAL_HIST_MAX];
	u8 currIndex;
	int16_t privNF;
	u8 invalidNFcount;
};

#define MAX_PACAL_SKIPCOUNT 8
struct ath9k_pacal_info{
	int32_t prev_offset;	/* Previous value of PA offset value */
	int8_t max_skipcount;	/* Max No. of times PACAL can be skipped */
	int8_t skipcount;	/* No. of times the PACAL to be skipped */
};

bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
void ath9k_hw_start_nfcal(struct ath_hw *ah);
void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
int16_t ath9k_hw_getnf(struct ath_hw *ah,
		       struct ath9k_channel *chan);
void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah);
s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);
bool ath9k_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
			u8 rxchainmask, bool longcal);
bool ath9k_hw_init_cal(struct ath_hw *ah,
		       struct ath9k_channel *chan);

#endif /* CALIB_H */
Commit	Line	Data
394cf0a1	1	/*
cee075a2	2	* Copyright (c) 2008-2009 Atheros Communications Inc.
394cf0a1 S	3	*
	4	* Permission to use, copy, modify, and/or distribute this software for any
	5	* purpose with or without fee is hereby granted, provided that the above
	6	* copyright notice and this permission notice appear in all copies.
	7	*
	8	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	9	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	10	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	11	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	12	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	13	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	14	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	15	*/
	16
	17	#ifndef CALIB_H
	18	#define CALIB_H
	19
cbfe9468 S	20	extern const struct ath9k_percal_data iq_cal_multi_sample;
	21	extern const struct ath9k_percal_data iq_cal_single_sample;
	22	extern const struct ath9k_percal_data adc_gain_cal_multi_sample;
	23	extern const struct ath9k_percal_data adc_gain_cal_single_sample;
	24	extern const struct ath9k_percal_data adc_dc_cal_multi_sample;
	25	extern const struct ath9k_percal_data adc_dc_cal_single_sample;
	26	extern const struct ath9k_percal_data adc_init_dc_cal;
394cf0a1	27
a59b5a5e SB	28	#define AR_PHY_CCA_MAX_AR5416_GOOD_VALUE -85
	29	#define AR_PHY_CCA_MAX_AR9280_GOOD_VALUE -112
	30	#define AR_PHY_CCA_MAX_AR9285_GOOD_VALUE -118
6170cd5c	31	#define AR_PHY_CCA_MAX_AR9287_GOOD_VALUE -118
394cf0a1	32	#define AR_PHY_CCA_MAX_HIGH_VALUE -62
b06e786d	33	#define AR_PHY_CCA_MIN_BAD_VALUE -140
394cf0a1 S	34	#define AR_PHY_CCA_FILTERWINDOW_LENGTH_INIT 3
	35	#define AR_PHY_CCA_FILTERWINDOW_LENGTH 5
	36
	37	#define NUM_NF_READINGS 6
	38	#define ATH9K_NF_CAL_HIST_MAX 5
	39
	40	struct ar5416IniArray {
	41	u32 *ia_array;
	42	u32 ia_rows;
	43	u32 ia_columns;
	44	};
	45
	46	#define INIT_INI_ARRAY(iniarray, array, rows, columns) do { \
	47	(iniarray)->ia_array = (u32 *)(array); \
	48	(iniarray)->ia_rows = (rows); \
	49	(iniarray)->ia_columns = (columns); \
	50	} while (0)
	51
	52	#define INI_RA(iniarray, row, column) \
	53	(((iniarray)->ia_array)[(row) * ((iniarray)->ia_columns) + (column)])
	54
	55	#define INIT_CAL(_perCal) do { \
	56	(_perCal)->calState = CAL_WAITING; \
	57	(_perCal)->calNext = NULL; \
	58	} while (0)
	59
	60	#define INSERT_CAL(_ahp, _perCal) \
	61	do { \
2660b81a S	62	if ((_ahp)->cal_list_last == NULL) { \
	63	(_ahp)->cal_list = \
	64	(_ahp)->cal_list_last = (_perCal); \
	65	((_ahp)->cal_list_last)->calNext = (_perCal); \
394cf0a1	66	} else { \
2660b81a S	67	((_ahp)->cal_list_last)->calNext = (_perCal); \
	68	(_ahp)->cal_list_last = (_perCal); \
	69	(_perCal)->calNext = (_ahp)->cal_list; \
394cf0a1 S	70	} \
	71	} while (0)
	72
cbfe9468	73	enum ath9k_cal_types {
394cf0a1 S	74	ADC_DC_INIT_CAL = 0x1,
	75	ADC_GAIN_CAL = 0x2,
	76	ADC_DC_CAL = 0x4,
	77	IQ_MISMATCH_CAL = 0x8
	78	};
	79
cbfe9468	80	enum ath9k_cal_state {
394cf0a1 S	81	CAL_INACTIVE,
	82	CAL_WAITING,
	83	CAL_RUNNING,
	84	CAL_DONE
	85	};
	86
	87	#define MIN_CAL_SAMPLES 1
	88	#define MAX_CAL_SAMPLES 64
	89	#define INIT_LOG_COUNT 5
	90	#define PER_MIN_LOG_COUNT 2
	91	#define PER_MAX_LOG_COUNT 10
	92
cbfe9468 S	93	struct ath9k_percal_data {
cbfe9468 S	94	enum ath9k_cal_types calType;
394cf0a1 S	95	u32 calNumSamples;
394cf0a1 S	96	u32 calCountMax;
cbe61d8a S	97	void (calCollect) (struct ath_hw );
cbe61d8a S	98	void (calPostProc) (struct ath_hw , u8);
394cf0a1 S	99	};
394cf0a1 S	100
cbfe9468 S	101	struct ath9k_cal_list {
	102	const struct ath9k_percal_data *calData;
	103	enum ath9k_cal_state calState;
	104	struct ath9k_cal_list *calNext;
394cf0a1 S	105	};
	106
	107	struct ath9k_nfcal_hist {
	108	int16_t nfCalBuffer[ATH9K_NF_CAL_HIST_MAX];
	109	u8 currIndex;
	110	int16_t privNF;
	111	u8 invalidNFcount;
	112	};
	113
a13883b0 S	114	#define MAX_PACAL_SKIPCOUNT 8
	115	struct ath9k_pacal_info{
	116	int32_t prev_offset; /* Previous value of PA offset value */
	117	int8_t max_skipcount; /* Max No. of times PACAL can be skipped */
	118	int8_t skipcount; /* No. of times the PACAL to be skipped */
	119	};
	120
cbe61d8a S	121	bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
	122	void ath9k_hw_start_nfcal(struct ath_hw *ah);
	123	void ath9k_hw_loadnf(struct ath_hw ah, struct ath9k_channel chan);
	124	int16_t ath9k_hw_getnf(struct ath_hw *ah,
394cf0a1	125	struct ath9k_channel *chan);
cbe61d8a S	126	void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah);
	127	s16 ath9k_hw_getchan_noise(struct ath_hw ah, struct ath9k_channel chan);
	128	bool ath9k_hw_calibrate(struct ath_hw ah, struct ath9k_channel chan,
379f0440	129	u8 rxchainmask, bool longcal);
cbe61d8a	130	bool ath9k_hw_init_cal(struct ath_hw *ah,
394cf0a1 S	131	struct ath9k_channel *chan);
	132
	133	#endif /* CALIB_H */