37 static void ucb1400_ts_mode_int(struct ucb1400_ts *ucb)  in ucb1400_ts_mode_int()  argument
39 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_mode_int()
49 static unsigned int ucb1400_ts_read_pressure(struct ucb1400_ts *ucb)  in ucb1400_ts_read_pressure()  argument
51 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_pressure()
58 	return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPY, adcsync);  in ucb1400_ts_read_pressure()
67 static unsigned int ucb1400_ts_read_xpos(struct ucb1400_ts *ucb)  in ucb1400_ts_read_xpos()  argument
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()
75 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_xpos()
81 	return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPY, adcsync);  in ucb1400_ts_read_xpos()
90 static int ucb1400_ts_read_ypos(struct ucb1400_ts *ucb)  in ucb1400_ts_read_ypos()  argument
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()
98 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_ypos()
104 	return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPX, adcsync);  in ucb1400_ts_read_ypos()
111 static unsigned int ucb1400_ts_read_xres(struct ucb1400_ts *ucb)  in ucb1400_ts_read_xres()  argument
113 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_xres()
116 	return ucb1400_adc_read(ucb->ac97, 0, adcsync);  in ucb1400_ts_read_xres()
123 static unsigned int ucb1400_ts_read_yres(struct ucb1400_ts *ucb)  in ucb1400_ts_read_yres()  argument
125 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR,  in ucb1400_ts_read_yres()
128 	return ucb1400_adc_read(ucb->ac97, 0, adcsync);  in ucb1400_ts_read_yres()
131 static int ucb1400_ts_pen_up(struct ucb1400_ts *ucb)  in ucb1400_ts_pen_up()  argument
133 	unsigned short val = ucb1400_reg_read(ucb->ac97, UCB_TS_CR);  in ucb1400_ts_pen_up()
138 static void ucb1400_ts_irq_enable(struct ucb1400_ts *ucb)  in ucb1400_ts_irq_enable()  argument
140 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, UCB_IE_TSPX);  in ucb1400_ts_irq_enable()
141 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);  in ucb1400_ts_irq_enable()
142 	ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, UCB_IE_TSPX);  in ucb1400_ts_irq_enable()
145 static void ucb1400_ts_irq_disable(struct ucb1400_ts *ucb)  in ucb1400_ts_irq_disable()  argument
147 	ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, 0);  in ucb1400_ts_irq_disable()
166 static void ucb1400_clear_pending_irq(struct ucb1400_ts *ucb)  in ucb1400_clear_pending_irq()  argument
170 	isr = ucb1400_reg_read(ucb->ac97, UCB_IE_STATUS);  in ucb1400_clear_pending_irq()
171 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, isr);  in ucb1400_clear_pending_irq()
172 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);  in ucb1400_clear_pending_irq()
175 		ucb1400_ts_irq_disable(ucb);  in ucb1400_clear_pending_irq()
177 		dev_dbg(&ucb->ts_idev->dev,  in ucb1400_clear_pending_irq()
190 	struct ucb1400_ts *ucb = devid;  in ucb1400_irq()  local
194 	if (unlikely(irqnr != ucb->irq))  in ucb1400_irq()
197 	ucb1400_clear_pending_irq(ucb);  in ucb1400_irq()
202 	while (!ucb->stopped && !(penup = ucb1400_ts_pen_up(ucb))) {  in ucb1400_irq()
204 		ucb1400_adc_enable(ucb->ac97);  in ucb1400_irq()
205 		x = ucb1400_ts_read_xpos(ucb);  in ucb1400_irq()
206 		y = ucb1400_ts_read_ypos(ucb);  in ucb1400_irq()
207 		p = ucb1400_ts_read_pressure(ucb);  in ucb1400_irq()
208 		ucb1400_adc_disable(ucb->ac97);  in ucb1400_irq()
210 		ucb1400_ts_report_event(ucb->ts_idev, p, x, y);  in ucb1400_irq()
212 		wait_event_timeout(ucb->ts_wait, ucb->stopped,  in ucb1400_irq()
216 	ucb1400_ts_event_release(ucb->ts_idev);  in ucb1400_irq()
218 	if (!ucb->stopped) {  in ucb1400_irq()
220 		ucb1400_ts_mode_int(ucb);  in ucb1400_irq()
221 		ucb1400_ts_irq_enable(ucb);  in ucb1400_irq()
227 static void ucb1400_ts_stop(struct ucb1400_ts *ucb)  in ucb1400_ts_stop()  argument
230 	ucb->stopped = true;  in ucb1400_ts_stop()
232 	wake_up(&ucb->ts_wait);  in ucb1400_ts_stop()
233 	disable_irq(ucb->irq);  in ucb1400_ts_stop()
235 	ucb1400_ts_irq_disable(ucb);  in ucb1400_ts_stop()
236 	ucb1400_reg_write(ucb->ac97, UCB_TS_CR, 0);  in ucb1400_ts_stop()
240 static void ucb1400_ts_start(struct ucb1400_ts *ucb)  in ucb1400_ts_start()  argument
243 	ucb->stopped = false;  in ucb1400_ts_start()
246 	ucb1400_ts_mode_int(ucb);  in ucb1400_ts_start()
247 	ucb1400_ts_irq_enable(ucb);  in ucb1400_ts_start()
249 	enable_irq(ucb->irq);  in ucb1400_ts_start()
254 	struct ucb1400_ts *ucb = input_get_drvdata(idev);  in ucb1400_ts_open()  local
256 	ucb1400_ts_start(ucb);  in ucb1400_ts_open()
263 	struct ucb1400_ts *ucb = input_get_drvdata(idev);  in ucb1400_ts_close()  local
265 	ucb1400_ts_stop(ucb);  in ucb1400_ts_close()
276 static int ucb1400_ts_detect_irq(struct ucb1400_ts *ucb,  in ucb1400_ts_detect_irq()  argument
284 	ucb1400_reg_write(ucb->ac97, UCB_IE_RIS, UCB_IE_ADC);  in ucb1400_ts_detect_irq()
285 	ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, UCB_IE_ADC);  in ucb1400_ts_detect_irq()
286 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0xffff);  in ucb1400_ts_detect_irq()
287 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);  in ucb1400_ts_detect_irq()
290 	ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, UCB_ADC_ENA);  in ucb1400_ts_detect_irq()
291 	ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START);  in ucb1400_ts_detect_irq()
295 	while (!(ucb1400_reg_read(ucb->ac97, UCB_ADC_DATA) &  in ucb1400_ts_detect_irq()
304 	ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, 0);  in ucb1400_ts_detect_irq()
307 	ucb1400_reg_write(ucb->ac97, UCB_IE_RIS, 0);  in ucb1400_ts_detect_irq()
308 	ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, 0);  in ucb1400_ts_detect_irq()
309 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0xffff);  in ucb1400_ts_detect_irq()
310 	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);  in ucb1400_ts_detect_irq()
313 	ucb->irq = probe_irq_off(mask);  in ucb1400_ts_detect_irq()
314 	if (ucb->irq < 0 || ucb->irq == NO_IRQ)  in ucb1400_ts_detect_irq()
322 	struct ucb1400_ts *ucb = dev_get_platdata(&pdev->dev);  in ucb1400_ts_probe()  local
326 	ucb->ts_idev = input_allocate_device();  in ucb1400_ts_probe()
327 	if (!ucb->ts_idev) {  in ucb1400_ts_probe()
333 	if (ucb->irq < 0) {  in ucb1400_ts_probe()
334 		error = ucb1400_ts_detect_irq(ucb, pdev);  in ucb1400_ts_probe()
340 	dev_dbg(&pdev->dev, "found IRQ %d\n", ucb->irq);  in ucb1400_ts_probe()
342 	init_waitqueue_head(&ucb->ts_wait);  in ucb1400_ts_probe()
344 	input_set_drvdata(ucb->ts_idev, ucb);  in ucb1400_ts_probe()
346 	ucb->ts_idev->dev.parent	= &pdev->dev;  in ucb1400_ts_probe()
347 	ucb->ts_idev->name		= "UCB1400 touchscreen interface";  in ucb1400_ts_probe()
348 	ucb->ts_idev->id.vendor		= ucb1400_reg_read(ucb->ac97,  in ucb1400_ts_probe()
350 	ucb->ts_idev->id.product	= ucb->id;  in ucb1400_ts_probe()
351 	ucb->ts_idev->open		= ucb1400_ts_open;  in ucb1400_ts_probe()
352 	ucb->ts_idev->close		= ucb1400_ts_close;  in ucb1400_ts_probe()
353 	ucb->ts_idev->evbit[0]		= BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);  in ucb1400_ts_probe()
354 	ucb->ts_idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);  in ucb1400_ts_probe()
361 	fcsr = ucb1400_reg_read(ucb->ac97, UCB_FCSR);  in ucb1400_ts_probe()
362 	ucb1400_reg_write(ucb->ac97, UCB_FCSR, fcsr | UCB_FCSR_AVE);  in ucb1400_ts_probe()
364 	ucb1400_adc_enable(ucb->ac97);  in ucb1400_ts_probe()
365 	x_res = ucb1400_ts_read_xres(ucb);  in ucb1400_ts_probe()
366 	y_res = ucb1400_ts_read_yres(ucb);  in ucb1400_ts_probe()
367 	ucb1400_adc_disable(ucb->ac97);  in ucb1400_ts_probe()
370 	input_set_abs_params(ucb->ts_idev, ABS_X, 0, x_res, 0, 0);  in ucb1400_ts_probe()
371 	input_set_abs_params(ucb->ts_idev, ABS_Y, 0, y_res, 0, 0);  in ucb1400_ts_probe()
372 	input_set_abs_params(ucb->ts_idev, ABS_PRESSURE, 0, 0, 0, 0);  in ucb1400_ts_probe()
374 	ucb1400_ts_stop(ucb);  in ucb1400_ts_probe()
376 	error = request_threaded_irq(ucb->irq, NULL, ucb1400_irq,  in ucb1400_ts_probe()
378 				     "UCB1400", ucb);  in ucb1400_ts_probe()
381 			"unable to grab irq%d: %d\n", ucb->irq, error);  in ucb1400_ts_probe()
385 	error = input_register_device(ucb->ts_idev);  in ucb1400_ts_probe()
392 	free_irq(ucb->irq, ucb);  in ucb1400_ts_probe()
394 	input_free_device(ucb->ts_idev);  in ucb1400_ts_probe()
401 	struct ucb1400_ts *ucb = dev_get_platdata(&pdev->dev);  in ucb1400_ts_remove()  local
403 	free_irq(ucb->irq, ucb);  in ucb1400_ts_remove()
404 	input_unregister_device(ucb->ts_idev);  in ucb1400_ts_remove()
411 	struct ucb1400_ts *ucb = dev_get_platdata(dev);  in ucb1400_ts_suspend()  local
412 	struct input_dev *idev = ucb->ts_idev;  in ucb1400_ts_suspend()
417 		ucb1400_ts_start(ucb);  in ucb1400_ts_suspend()
425 	struct ucb1400_ts *ucb = dev_get_platdata(dev);  in ucb1400_ts_resume()  local
426 	struct input_dev *idev = ucb->ts_idev;  in ucb1400_ts_resume()
431 		ucb1400_ts_stop(ucb);  in ucb1400_ts_resume()