83 static inline const int16_t *fir16_create(struct fir16_state_t *fir,  in fir16_create()  argument
86 	fir->taps = taps;  in fir16_create()
87 	fir->curr_pos = taps - 1;  in fir16_create()
88 	fir->coeffs = coeffs;  in fir16_create()
89 	fir->history = kcalloc(taps, sizeof(int16_t), GFP_KERNEL);  in fir16_create()
90 	return fir->history;  in fir16_create()
93 static inline void fir16_flush(struct fir16_state_t *fir)  in fir16_flush()  argument
95 	memset(fir->history, 0, fir->taps * sizeof(int16_t));  in fir16_flush()
98 static inline void fir16_free(struct fir16_state_t *fir)  in fir16_free()  argument
100 	kfree(fir->history);  in fir16_free()
103 static inline int16_t fir16(struct fir16_state_t *fir, int16_t sample)  in fir16()  argument
110 	fir->history[fir->curr_pos] = sample;  in fir16()
112 	offset2 = fir->curr_pos;  in fir16()
113 	offset1 = fir->taps - offset2;  in fir16()
115 	for (i = fir->taps - 1; i >= offset1; i--)  in fir16()
116 		y += fir->coeffs[i] * fir->history[i - offset1];  in fir16()
118 		y += fir->coeffs[i] * fir->history[i + offset2];  in fir16()
119 	if (fir->curr_pos <= 0)  in fir16()
120 		fir->curr_pos = fir->taps;  in fir16()
121 	fir->curr_pos--;  in fir16()
125 static inline const int16_t *fir32_create(struct fir32_state_t *fir,  in fir32_create()  argument
128 	fir->taps = taps;  in fir32_create()
129 	fir->curr_pos = taps - 1;  in fir32_create()
130 	fir->coeffs = coeffs;  in fir32_create()
131 	fir->history = kcalloc(taps, sizeof(int16_t), GFP_KERNEL);  in fir32_create()
132 	return fir->history;  in fir32_create()
135 static inline void fir32_flush(struct fir32_state_t *fir)  in fir32_flush()  argument
137 	memset(fir->history, 0, fir->taps * sizeof(int16_t));  in fir32_flush()
140 static inline void fir32_free(struct fir32_state_t *fir)  in fir32_free()  argument
142 	kfree(fir->history);  in fir32_free()
145 static inline int16_t fir32(struct fir32_state_t *fir, int16_t sample)  in fir32()  argument
152 	fir->history[fir->curr_pos] = sample;  in fir32()
153 	offset2 = fir->curr_pos;  in fir32()
154 	offset1 = fir->taps - offset2;  in fir32()
156 	for (i = fir->taps - 1; i >= offset1; i--)  in fir32()
157 		y += fir->coeffs[i] * fir->history[i - offset1];  in fir32()
159 		y += fir->coeffs[i] * fir->history[i + offset2];  in fir32()
160 	if (fir->curr_pos <= 0)  in fir32()
161 		fir->curr_pos = fir->taps;  in fir32()
162 	fir->curr_pos--;  in fir32()