71 static inline const int16_t *fir16_create(struct fir16_state_t *fir,  in fir16_create()  argument
74 	fir->taps = taps;  in fir16_create()
75 	fir->curr_pos = taps - 1;  in fir16_create()
76 	fir->coeffs = coeffs;  in fir16_create()
77 	fir->history = kcalloc(taps, sizeof(int16_t), GFP_KERNEL);  in fir16_create()
78 	return fir->history;  in fir16_create()
81 static inline void fir16_flush(struct fir16_state_t *fir)  in fir16_flush()  argument
83 	memset(fir->history, 0, fir->taps * sizeof(int16_t));  in fir16_flush()
86 static inline void fir16_free(struct fir16_state_t *fir)  in fir16_free()  argument
88 	kfree(fir->history);  in fir16_free()
91 static inline int16_t fir16(struct fir16_state_t *fir, int16_t sample)  in fir16()  argument
98 	fir->history[fir->curr_pos] = sample;  in fir16()
100 	offset2 = fir->curr_pos;  in fir16()
101 	offset1 = fir->taps - offset2;  in fir16()
103 	for (i = fir->taps - 1; i >= offset1; i--)  in fir16()
104 		y += fir->coeffs[i] * fir->history[i - offset1];  in fir16()
106 		y += fir->coeffs[i] * fir->history[i + offset2];  in fir16()
107 	if (fir->curr_pos <= 0)  in fir16()
108 		fir->curr_pos = fir->taps;  in fir16()
109 	fir->curr_pos--;  in fir16()
113 static inline const int16_t *fir32_create(struct fir32_state_t *fir,  in fir32_create()  argument
116 	fir->taps = taps;  in fir32_create()
117 	fir->curr_pos = taps - 1;  in fir32_create()
118 	fir->coeffs = coeffs;  in fir32_create()
119 	fir->history = kcalloc(taps, sizeof(int16_t), GFP_KERNEL);  in fir32_create()
120 	return fir->history;  in fir32_create()
123 static inline void fir32_flush(struct fir32_state_t *fir)  in fir32_flush()  argument
125 	memset(fir->history, 0, fir->taps * sizeof(int16_t));  in fir32_flush()
128 static inline void fir32_free(struct fir32_state_t *fir)  in fir32_free()  argument
130 	kfree(fir->history);  in fir32_free()
133 static inline int16_t fir32(struct fir32_state_t *fir, int16_t sample)  in fir32()  argument
140 	fir->history[fir->curr_pos] = sample;  in fir32()
141 	offset2 = fir->curr_pos;  in fir32()
142 	offset1 = fir->taps - offset2;  in fir32()
144 	for (i = fir->taps - 1; i >= offset1; i--)  in fir32()
145 		y += fir->coeffs[i] * fir->history[i - offset1];  in fir32()
147 		y += fir->coeffs[i] * fir->history[i + offset2];  in fir32()
148 	if (fir->curr_pos <= 0)  in fir32()
149 		fir->curr_pos = fir->taps;  in fir32()
150 	fir->curr_pos--;  in fir32()