1 // SPDX-License-Identifier: GPL-2.0-or-later
5  *   Copyright 2003 Vivien Chappelier <vivien.chappelier@linux-mips.org>
20  * AD1843 bitfield definitions.  All are named as in the AD1843 data
21  * sheet, with ad1843_ prepended and individual bit numbers removed.
35 	ad1843_PDNO   = {  0, 14,  1 },	/* Converter Power-Down Flag */
85 	ad1843_ADLF   = { 26,  0,  2 }, /* ADC Left Channel Data Format */
86 	ad1843_ADRF   = { 26,  2,  2 }, /* ADC Right Channel Data Format */
89 	ad1843_DA1F   = { 26,  8,  2 },	/* DAC1 Data Format Select */
90 	ad1843_DA2F   = { 26, 10,  2 },	/* DAC2 Data Format Select */
177 	w = ad1843->read(ad1843->chip, field->reg);  in ad1843_read_bits()
178 	return w >> field->lo_bit & ((1 << field->nbits) - 1);  in ad1843_read_bits()
191 	w = ad1843->read(ad1843->chip, field->reg);  in ad1843_write_bits()
192 	mask = ((1 << field->nbits) - 1) << field->lo_bit;  in ad1843_write_bits()
193 	oldval = (w & mask) >> field->lo_bit;  in ad1843_write_bits()
194 	newbits = (newval << field->lo_bit) & mask;  in ad1843_write_bits()
196 	ad1843->write(ad1843->chip, field->reg, w);  in ad1843_write_bits()
218 	int w = 0, mask, *value, reg = -1;  in ad1843_read_multi()
221 	while (--argcount >= 0) {  in ad1843_read_multi()
224 		if (reg == -1) {  in ad1843_read_multi()
225 			reg = fp->reg;  in ad1843_read_multi()
226 			w = ad1843->read(ad1843->chip, reg);  in ad1843_read_multi()
229 		mask = (1 << fp->nbits) - 1;  in ad1843_read_multi()
230 		*value = w >> fp->lo_bit & mask;  in ad1843_read_multi()
256 	reg = -1;  in ad1843_write_multi()
259 	while (--argcount >= 0) {  in ad1843_write_multi()
262 		if (reg == -1)  in ad1843_write_multi()
263 			reg = fp->reg;  in ad1843_write_multi()
265 			WARN_ON(reg != fp->reg);  in ad1843_write_multi()
266 		m = ((1 << fp->nbits) - 1) << fp->lo_bit;  in ad1843_write_multi()
268 		bits |= (value << fp->lo_bit) & m;  in ad1843_write_multi()
273 		w = ad1843->read(ad1843->chip, reg);  in ad1843_write_multi()
277 	ad1843->write(ad1843->chip, reg, w);  in ad1843_write_multi()
285 	ret = (1 << gp->lfield->nbits);  in ad1843_get_gain_max()
286 	if (!gp->lmute)  in ad1843_get_gain_max()
287 		ret -= 1;  in ad1843_get_gain_max()
300 	unsigned short mask = (1 << gp->lfield->nbits) - 1;  in ad1843_get_gain()
302 	ad1843_read_multi(ad1843, 2, gp->lfield, &lg, gp->rfield, &rg);  in ad1843_get_gain()
303 	if (gp->negative) {  in ad1843_get_gain()
304 		lg = mask - lg;  in ad1843_get_gain()
305 		rg = mask - rg;  in ad1843_get_gain()
307 	if (gp->lmute) {  in ad1843_get_gain()
308 		ad1843_read_multi(ad1843, 2, gp->lmute, &lm, gp->rmute, &rm);  in ad1843_get_gain()
326 	unsigned short mask = (1 << gp->lfield->nbits) - 1;  in ad1843_set_gain()
333 	if (gp->negative) {  in ad1843_set_gain()
334 		lg = mask - lg;  in ad1843_set_gain()
335 		rg = mask - rg;  in ad1843_set_gain()
337 	if (gp->lmute)  in ad1843_set_gain()
338 		ad1843_write_multi(ad1843, 2, gp->lmute, lm, gp->rmute, rm);  in ad1843_set_gain()
339 	ad1843_write_multi(ad1843, 2, gp->lfield, lg, gp->rfield, rg);  in ad1843_set_gain()
360  * Returns newsrc on success, -errno on failure.
366 		return -EINVAL;  in ad1843_set_recsrc()
461  * Fully initialize the ad1843.  As described in the AD1843 data
462  * sheet, section "START-UP SEQUENCE".  The numbered comments are
463  * subsection headings from the data sheet.  See the data sheet, pages
464  * 52-54, for more info.
466  * return 0 on success, -errno on failure.  */
474 		return -EIO;  in ad1843_init()
487 			return -EIO;  in ad1843_init()
540 	/* Set Speaker Out level to +/- 4V and unmute it. */  in ad1843_init()