151 static void wm9712_phy_init(struct wm97xx *wm)  in wm9712_phy_init()  argument
160 		dev_dbg(wm->dev, "setting pen detect pull-up to %d Ohms\n",  in wm9712_phy_init()
167 		dev_dbg(wm->dev, "setting 5-wire touchscreen mode.\n");  in wm9712_phy_init()
170 			dev_warn(wm->dev, "pressure measurement is not "  in wm9712_phy_init()
179 		dev_dbg(wm->dev,  in wm9712_phy_init()
182 		dev_dbg(wm->dev,  in wm9712_phy_init()
189 		dev_dbg(wm->dev, "supplied delay out of range.\n");  in wm9712_phy_init()
194 	dev_dbg(wm->dev, "setting adc sample delay to %d u Secs.\n",  in wm9712_phy_init()
202 		reg = wm97xx_reg_read(wm, AC97_MISC_AFE);  in wm9712_phy_init()
203 		wm97xx_reg_write(wm, AC97_MISC_AFE, reg | WM97XX_GPIO_4);  in wm9712_phy_init()
204 		reg = wm97xx_reg_read(wm, AC97_GPIO_CFG);  in wm9712_phy_init()
205 		wm97xx_reg_write(wm, AC97_GPIO_CFG, reg | WM97XX_GPIO_4);  in wm9712_phy_init()
212 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, dig1);  in wm9712_phy_init()
213 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2);  in wm9712_phy_init()
216 static void wm9712_dig_enable(struct wm97xx *wm, int enable)  in wm9712_dig_enable()  argument
218 	u16 dig2 = wm->dig[2];  in wm9712_dig_enable()
221 		wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2,  in wm9712_dig_enable()
223 		wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); /* dummy read */  in wm9712_dig_enable()
225 		wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2,  in wm9712_dig_enable()
229 static void wm9712_aux_prepare(struct wm97xx *wm)  in wm9712_aux_prepare()  argument
231 	memcpy(wm->dig_save, wm->dig, sizeof(wm->dig));  in wm9712_aux_prepare()
232 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, 0);  in wm9712_aux_prepare()
233 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, WM97XX_PRP_DET_DIG);  in wm9712_aux_prepare()
236 static void wm9712_dig_restore(struct wm97xx *wm)  in wm9712_dig_restore()  argument
238 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, wm->dig_save[1]);  in wm9712_dig_restore()
239 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, wm->dig_save[2]);  in wm9712_dig_restore()
242 static inline int is_pden(struct wm97xx *wm)  in is_pden()  argument
244 	return wm->dig[2] & WM9712_PDEN;  in is_pden()
250 static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample)  in wm9712_poll_sample()  argument
255 	if (wants_pen && !wm->pen_probably_down) {  in wm9712_poll_sample()
256 		u16 data = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD);  in wm9712_poll_sample()
259 		wm->pen_probably_down = 1;  in wm9712_poll_sample()
263 	if (wm->mach_ops && wm->mach_ops->pre_sample)  in wm9712_poll_sample()
264 		wm->mach_ops->pre_sample(adcsel);  in wm9712_poll_sample()
265 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, (adcsel & WM97XX_ADCSEL_MASK)  in wm9712_poll_sample()
272 	while ((wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER1) & WM97XX_POLL)  in wm9712_poll_sample()
280 		if (is_pden(wm))  in wm9712_poll_sample()
281 			wm->pen_probably_down = 0;  in wm9712_poll_sample()
283 			dev_dbg(wm->dev, "adc sample timeout\n");  in wm9712_poll_sample()
287 	*sample = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD);  in wm9712_poll_sample()
288 	if (wm->mach_ops && wm->mach_ops->post_sample)  in wm9712_poll_sample()
289 		wm->mach_ops->post_sample(adcsel);  in wm9712_poll_sample()
293 		dev_dbg(wm->dev, "adc wrong sample, wanted %x got %x\n",  in wm9712_poll_sample()
301 		*sample = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD);  in wm9712_poll_sample()
303 			wm->pen_probably_down = 0;  in wm9712_poll_sample()
314 static int wm9712_poll_coord(struct wm97xx *wm, struct wm97xx_data *data)  in wm9712_poll_coord()  argument
318 	if (!wm->pen_probably_down) {  in wm9712_poll_coord()
319 		u16 data_rd = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD);  in wm9712_poll_coord()
322 		wm->pen_probably_down = 1;  in wm9712_poll_coord()
326 	if (wm->mach_ops && wm->mach_ops->pre_sample)  in wm9712_poll_coord()
327 		wm->mach_ops->pre_sample(WM97XX_ADCSEL_X | WM97XX_ADCSEL_Y);  in wm9712_poll_coord()
329 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1,  in wm9712_poll_coord()
334 	data->x = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD);  in wm9712_poll_coord()
336 	while ((wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER1) & WM97XX_POLL)  in wm9712_poll_coord()
344 		if (is_pden(wm))  in wm9712_poll_coord()
345 			wm->pen_probably_down = 0;  in wm9712_poll_coord()
347 			dev_dbg(wm->dev, "adc sample timeout\n");  in wm9712_poll_coord()
352 	data->y = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD);  in wm9712_poll_coord()
354 		data->p = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD);  in wm9712_poll_coord()
358 	if (wm->mach_ops && wm->mach_ops->post_sample)  in wm9712_poll_coord()
359 		wm->mach_ops->post_sample(WM97XX_ADCSEL_X | WM97XX_ADCSEL_Y);  in wm9712_poll_coord()
368 		wm->pen_probably_down = 0;  in wm9712_poll_coord()
379 static int wm9712_poll_touch(struct wm97xx *wm, struct wm97xx_data *data)  in wm9712_poll_touch()  argument
384 		rc = wm9712_poll_coord(wm, data);  in wm9712_poll_touch()
388 		rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_X | WM97XX_PEN_DOWN,  in wm9712_poll_touch()
393 		rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_Y | WM97XX_PEN_DOWN,  in wm9712_poll_touch()
399 			rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_PRES | WM97XX_PEN_DOWN,  in wm9712_poll_touch()
413 static int wm9712_acc_enable(struct wm97xx *wm, int enable)  in wm9712_acc_enable()  argument
418 	dig1 = wm->dig[1];  in wm9712_acc_enable()
419 	dig2 = wm->dig[2];  in wm9712_acc_enable()
423 		if (wm->mach_ops->acc_startup) {  in wm9712_acc_enable()
424 			ret = wm->mach_ops->acc_startup(wm);  in wm9712_acc_enable()
432 			WM97XX_SLT(wm->acc_slot) |  in wm9712_acc_enable()
433 			WM97XX_RATE(wm->acc_rate);  in wm9712_acc_enable()
440 		if (wm->mach_ops->acc_shutdown)  in wm9712_acc_enable()
441 			wm->mach_ops->acc_shutdown(wm);  in wm9712_acc_enable()
444 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, dig1);  in wm9712_acc_enable()
445 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2);  in wm9712_acc_enable()