34 static void ucb1400_ts_mode_int(struct ucb1400_ts *ucb)  in ucb1400_ts_mode_int()  argument
36 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_mode_int()
46 static unsigned int ucb1400_ts_read_pressure(struct ucb1400_ts *ucb)  in ucb1400_ts_read_pressure()  argument
48 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_pressure()
55 	return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPY, adcsync);  in ucb1400_ts_read_pressure()
64 static unsigned int ucb1400_ts_read_xpos(struct ucb1400_ts *ucb)  in ucb1400_ts_read_xpos()  argument
66 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_xpos()
69 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_xpos()
72 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_xpos()
78 	return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPY, adcsync);  in ucb1400_ts_read_xpos()
87 static int ucb1400_ts_read_ypos(struct ucb1400_ts *ucb)  in ucb1400_ts_read_ypos()  argument
89 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_ypos()
92 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_ypos()
95 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_ypos()
101 	return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPX, adcsync);  in ucb1400_ts_read_ypos()
108 static unsigned int ucb1400_ts_read_xres(struct ucb1400_ts *ucb)  in ucb1400_ts_read_xres()  argument
110 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_xres()
113 	return ucb1400_adc_read(ucb->ac97, 0, adcsync);  in ucb1400_ts_read_xres()
120 static unsigned int ucb1400_ts_read_yres(struct ucb1400_ts *ucb)  in ucb1400_ts_read_yres()  argument
122 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_yres()
125 	return ucb1400_adc_read(ucb->ac97, 0, adcsync);  in ucb1400_ts_read_yres()
128 static int ucb1400_ts_pen_up(struct ucb1400_ts *ucb)  in ucb1400_ts_pen_up()  argument
130 	unsigned short val = ucb1400_reg_read(ucb->ac97, UCB_TS_CR);  in ucb1400_ts_pen_up()
135 static void ucb1400_ts_irq_enable(struct ucb1400_ts *ucb)  in ucb1400_ts_irq_enable()  argument
137 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, UCB_IE_TSPX);  in ucb1400_ts_irq_enable()
138 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);  in ucb1400_ts_irq_enable()
139 	ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, UCB_IE_TSPX);  in ucb1400_ts_irq_enable()
142 static void ucb1400_ts_irq_disable(struct ucb1400_ts *ucb)  in ucb1400_ts_irq_disable()  argument
144 	ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, 0);  in ucb1400_ts_irq_disable()
163 static void ucb1400_clear_pending_irq(struct ucb1400_ts *ucb)  in ucb1400_clear_pending_irq()  argument
167 	isr = ucb1400_reg_read(ucb->ac97, UCB_IE_STATUS);  in ucb1400_clear_pending_irq()
168 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, isr);  in ucb1400_clear_pending_irq()
169 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);  in ucb1400_clear_pending_irq()
172 		ucb1400_ts_irq_disable(ucb);  in ucb1400_clear_pending_irq()
174 		dev_dbg(&ucb->ts_idev->dev,  in ucb1400_clear_pending_irq()
187 	struct ucb1400_ts *ucb = devid;  in ucb1400_irq()  local
190 	if (unlikely(irqnr != ucb->irq))  in ucb1400_irq()
193 	ucb1400_clear_pending_irq(ucb);  in ucb1400_irq()
198 	while (!ucb->stopped && !ucb1400_ts_pen_up(ucb)) {  in ucb1400_irq()
199 		ucb1400_adc_enable(ucb->ac97);  in ucb1400_irq()
200 		x = ucb1400_ts_read_xpos(ucb);  in ucb1400_irq()
201 		y = ucb1400_ts_read_ypos(ucb);  in ucb1400_irq()
202 		p = ucb1400_ts_read_pressure(ucb);  in ucb1400_irq()
203 		ucb1400_adc_disable(ucb->ac97);  in ucb1400_irq()
205 		ucb1400_ts_report_event(ucb->ts_idev, p, x, y);  in ucb1400_irq()
207 		wait_event_timeout(ucb->ts_wait, ucb->stopped,  in ucb1400_irq()
211 	ucb1400_ts_event_release(ucb->ts_idev);  in ucb1400_irq()
213 	if (!ucb->stopped) {  in ucb1400_irq()
215 		ucb1400_ts_mode_int(ucb);  in ucb1400_irq()
216 		ucb1400_ts_irq_enable(ucb);  in ucb1400_irq()
222 static void ucb1400_ts_stop(struct ucb1400_ts *ucb)  in ucb1400_ts_stop()  argument
225 	ucb->stopped = true;  in ucb1400_ts_stop()
227 	wake_up(&ucb->ts_wait);  in ucb1400_ts_stop()
228 	disable_irq(ucb->irq);  in ucb1400_ts_stop()
230 	ucb1400_ts_irq_disable(ucb);  in ucb1400_ts_stop()
231 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR, 0);  in ucb1400_ts_stop()
235 static void ucb1400_ts_start(struct ucb1400_ts *ucb)  in ucb1400_ts_start()  argument
238 	ucb->stopped = false;  in ucb1400_ts_start()
241 	ucb1400_ts_mode_int(ucb);  in ucb1400_ts_start()
242 	ucb1400_ts_irq_enable(ucb);  in ucb1400_ts_start()
244 	enable_irq(ucb->irq);  in ucb1400_ts_start()
249 	struct ucb1400_ts *ucb = input_get_drvdata(idev);  in ucb1400_ts_open()  local
251 	ucb1400_ts_start(ucb);  in ucb1400_ts_open()
258 	struct ucb1400_ts *ucb = input_get_drvdata(idev);  in ucb1400_ts_close()  local
260 	ucb1400_ts_stop(ucb);  in ucb1400_ts_close()
271 static int ucb1400_ts_detect_irq(struct ucb1400_ts *ucb,  in ucb1400_ts_detect_irq()  argument
279 	ucb1400_reg_write(ucb->ac97, UCB_IE_RIS, UCB_IE_ADC);  in ucb1400_ts_detect_irq()
280 	ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, UCB_IE_ADC);  in ucb1400_ts_detect_irq()
281 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0xffff);  in ucb1400_ts_detect_irq()
282 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);  in ucb1400_ts_detect_irq()
285 	ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, UCB_ADC_ENA);  in ucb1400_ts_detect_irq()
286 	ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START);  in ucb1400_ts_detect_irq()
290 	while (!(ucb1400_reg_read(ucb->ac97, UCB_ADC_DATA) &  in ucb1400_ts_detect_irq()
299 	ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, 0);  in ucb1400_ts_detect_irq()
302 	ucb1400_reg_write(ucb->ac97, UCB_IE_RIS, 0);  in ucb1400_ts_detect_irq()
303 	ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, 0);  in ucb1400_ts_detect_irq()
304 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0xffff);  in ucb1400_ts_detect_irq()
305 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);  in ucb1400_ts_detect_irq()
308 	ucb->irq = probe_irq_off(mask);  in ucb1400_ts_detect_irq()
309 	if (ucb->irq < 0 || ucb->irq == NO_IRQ)  in ucb1400_ts_detect_irq()
317 	struct ucb1400_ts *ucb = dev_get_platdata(&pdev->dev);  in ucb1400_ts_probe()  local
321 	ucb->ts_idev = input_allocate_device();  in ucb1400_ts_probe()
322 	if (!ucb->ts_idev) {  in ucb1400_ts_probe()
328 	if (ucb->irq < 0) {  in ucb1400_ts_probe()
329 		error = ucb1400_ts_detect_irq(ucb, pdev);  in ucb1400_ts_probe()
335 	dev_dbg(&pdev->dev, "found IRQ %d\n", ucb->irq);  in ucb1400_ts_probe()
337 	init_waitqueue_head(&ucb->ts_wait);  in ucb1400_ts_probe()
339 	input_set_drvdata(ucb->ts_idev, ucb);  in ucb1400_ts_probe()
341 	ucb->ts_idev->dev.parent	= &pdev->dev;  in ucb1400_ts_probe()
342 	ucb->ts_idev->name		= "UCB1400 touchscreen interface";  in ucb1400_ts_probe()
343 	ucb->ts_idev->id.vendor		= ucb1400_reg_read(ucb->ac97,  in ucb1400_ts_probe()
345 	ucb->ts_idev->id.product	= ucb->id;  in ucb1400_ts_probe()
346 	ucb->ts_idev->open		= ucb1400_ts_open;  in ucb1400_ts_probe()
347 	ucb->ts_idev->close		= ucb1400_ts_close;  in ucb1400_ts_probe()
348 	ucb->ts_idev->evbit[0]		= BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);  in ucb1400_ts_probe()
349 	ucb->ts_idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);  in ucb1400_ts_probe()
356 	fcsr = ucb1400_reg_read(ucb->ac97, UCB_FCSR);  in ucb1400_ts_probe()
357 	ucb1400_reg_write(ucb->ac97, UCB_FCSR, fcsr | UCB_FCSR_AVE);  in ucb1400_ts_probe()
359 	ucb1400_adc_enable(ucb->ac97);  in ucb1400_ts_probe()
360 	x_res = ucb1400_ts_read_xres(ucb);  in ucb1400_ts_probe()
361 	y_res = ucb1400_ts_read_yres(ucb);  in ucb1400_ts_probe()
362 	ucb1400_adc_disable(ucb->ac97);  in ucb1400_ts_probe()
365 	input_set_abs_params(ucb->ts_idev, ABS_X, 0, x_res, 0, 0);  in ucb1400_ts_probe()
366 	input_set_abs_params(ucb->ts_idev, ABS_Y, 0, y_res, 0, 0);  in ucb1400_ts_probe()
367 	input_set_abs_params(ucb->ts_idev, ABS_PRESSURE, 0, 0, 0, 0);  in ucb1400_ts_probe()
369 	ucb1400_ts_stop(ucb);  in ucb1400_ts_probe()
371 	error = request_threaded_irq(ucb->irq, NULL, ucb1400_irq,  in ucb1400_ts_probe()
373 				     "UCB1400", ucb);  in ucb1400_ts_probe()
376 			"unable to grab irq%d: %d\n", ucb->irq, error);  in ucb1400_ts_probe()
380 	error = input_register_device(ucb->ts_idev);  in ucb1400_ts_probe()
387 	free_irq(ucb->irq, ucb);  in ucb1400_ts_probe()
389 	input_free_device(ucb->ts_idev);  in ucb1400_ts_probe()
396 	struct ucb1400_ts *ucb = dev_get_platdata(&pdev->dev);  in ucb1400_ts_remove()  local
398 	free_irq(ucb->irq, ucb);  in ucb1400_ts_remove()
399 	input_unregister_device(ucb->ts_idev);  in ucb1400_ts_remove()
406 	struct ucb1400_ts *ucb = dev_get_platdata(dev);  in ucb1400_ts_suspend()  local
407 	struct input_dev *idev = ucb->ts_idev;  in ucb1400_ts_suspend()
412 		ucb1400_ts_stop(ucb);  in ucb1400_ts_suspend()
420 	struct ucb1400_ts *ucb = dev_get_platdata(dev);  in ucb1400_ts_resume()  local
421 	struct input_dev *idev = ucb->ts_idev;  in ucb1400_ts_resume()
426 		ucb1400_ts_start(ucb);  in ucb1400_ts_resume()