73 static int titsc_config_wires(struct titsc *ts_dev)  in titsc_config_wires()  argument
84 		analog_line[i] = (ts_dev->config_inp[i] & 0xF0) >> 4;  in titsc_config_wires()
85 		wire_order[i] = ts_dev->config_inp[i] & 0x0F;  in titsc_config_wires()
103 			ts_dev->bit_xp = bit_cfg;  in titsc_config_wires()
104 			ts_dev->inp_xp = an_line;  in titsc_config_wires()
108 			ts_dev->bit_xn = bit_cfg;  in titsc_config_wires()
109 			ts_dev->inp_xn = an_line;  in titsc_config_wires()
113 			ts_dev->bit_yp = bit_cfg;  in titsc_config_wires()
114 			ts_dev->inp_yp = an_line;  in titsc_config_wires()
117 			ts_dev->bit_yn = bit_cfg;  in titsc_config_wires()
118 			ts_dev->inp_yn = an_line;  in titsc_config_wires()
125 static void titsc_step_config(struct titsc *ts_dev)  in titsc_step_config()  argument
133 			STEPCONFIG_AVG_16 | ts_dev->bit_xp |  in titsc_step_config()
135 	switch (ts_dev->wires) {  in titsc_step_config()
137 		config |= STEPCONFIG_INP(ts_dev->inp_yp) | ts_dev->bit_xn;  in titsc_step_config()
140 		config |= ts_dev->bit_yn |  in titsc_step_config()
141 				STEPCONFIG_INP_AN4 | ts_dev->bit_xn |  in titsc_step_config()
142 				ts_dev->bit_yp;  in titsc_step_config()
145 		config |= STEPCONFIG_INP(ts_dev->inp_yp) | ts_dev->bit_xn;  in titsc_step_config()
149 	tsc_steps = ts_dev->coordinate_readouts * 2 + 2;  in titsc_step_config()
154 	for (i = end_step - ts_dev->coordinate_readouts; i < end_step; i++) {  in titsc_step_config()
155 		titsc_writel(ts_dev, REG_STEPCONFIG(i), config);  in titsc_step_config()
156 		titsc_writel(ts_dev, REG_STEPDELAY(i),  in titsc_step_config()
161 			STEPCONFIG_AVG_16 | ts_dev->bit_yn |  in titsc_step_config()
163 	switch (ts_dev->wires) {  in titsc_step_config()
165 		config |= ts_dev->bit_yp | STEPCONFIG_INP(ts_dev->inp_xp);  in titsc_step_config()
168 		config |= ts_dev->bit_xp | STEPCONFIG_INP_AN4 |  in titsc_step_config()
172 		config |= ts_dev->bit_yp | STEPCONFIG_INP(ts_dev->inp_xp);  in titsc_step_config()
177 	end_step = first_step + ts_dev->coordinate_readouts;  in titsc_step_config()
180 		titsc_writel(ts_dev, REG_STEPCONFIG(i), config);  in titsc_step_config()
181 		titsc_writel(ts_dev, REG_STEPDELAY(i),  in titsc_step_config()
187 	config = titsc_readl(ts_dev, REG_IDLECONFIG);  in titsc_step_config()
188 	titsc_writel(ts_dev, REG_CHARGECONFIG, config);  in titsc_step_config()
189 	titsc_writel(ts_dev, REG_CHARGEDELAY, ts_dev->charge_delay);  in titsc_step_config()
193 			STEPCONFIG_AVG_16 | ts_dev->bit_yp |  in titsc_step_config()
194 			ts_dev->bit_xn | STEPCONFIG_INM_ADCREFM |  in titsc_step_config()
195 			STEPCONFIG_INP(ts_dev->inp_xp);  in titsc_step_config()
196 	titsc_writel(ts_dev, REG_STEPCONFIG(end_step), config);  in titsc_step_config()
197 	titsc_writel(ts_dev, REG_STEPDELAY(end_step),  in titsc_step_config()
202 			STEPCONFIG_AVG_16 | ts_dev->bit_yp |  in titsc_step_config()
203 			ts_dev->bit_xn | STEPCONFIG_INM_ADCREFM |  in titsc_step_config()
204 			STEPCONFIG_INP(ts_dev->inp_yn);  in titsc_step_config()
205 	titsc_writel(ts_dev, REG_STEPCONFIG(end_step), config);  in titsc_step_config()
206 	titsc_writel(ts_dev, REG_STEPDELAY(end_step),  in titsc_step_config()
214 	ts_dev->step_mask = stepenable;  in titsc_step_config()
215 	am335x_tsc_se_set_cache(ts_dev->mfd_tscadc, ts_dev->step_mask);  in titsc_step_config()
223 static void titsc_read_coordinates(struct titsc *ts_dev,  in titsc_read_coordinates()  argument
228 	unsigned int creads = ts_dev->coordinate_readouts;  in titsc_read_coordinates()
231 		yvals[i] = titsc_readl(ts_dev, REG_FIFO0);  in titsc_read_coordinates()
235 	*z1 = titsc_readl(ts_dev, REG_FIFO0);  in titsc_read_coordinates()
237 	*z2 = titsc_readl(ts_dev, REG_FIFO0);  in titsc_read_coordinates()
241 		xvals[i] = titsc_readl(ts_dev, REG_FIFO0);  in titsc_read_coordinates()
277 	struct titsc *ts_dev = dev;  in titsc_irq()  local
278 	struct input_dev *input_dev = ts_dev->input;  in titsc_irq()
283 	status = titsc_readl(ts_dev, REG_RAWIRQSTATUS);  in titsc_irq()
285 		ts_dev->pen_down = true;  in titsc_irq()
287 		pm_stay_awake(ts_dev->dev);  in titsc_irq()
291 		fsm = titsc_readl(ts_dev, REG_ADCFSM);  in titsc_irq()
293 			ts_dev->pen_down = false;  in titsc_irq()
297 			pm_relax(ts_dev->dev);  in titsc_irq()
299 			ts_dev->pen_down = true;  in titsc_irq()
313 		titsc_read_coordinates(ts_dev, &x, &y, &z1, &z2);  in titsc_irq()
315 		if (ts_dev->pen_down && z1 != 0 && z2 != 0) {  in titsc_irq()
323 			z *= ts_dev->x_plate_resistance;  in titsc_irq()
338 		titsc_writel(ts_dev, REG_IRQSTATUS, irqclr);  in titsc_irq()
340 			am335x_tsc_se_set_cache(ts_dev->mfd_tscadc,  in titsc_irq()
341 						ts_dev->step_mask);  in titsc_irq()
348 					struct titsc *ts_dev)  in titsc_parse_dt()  argument
356 	err = of_property_read_u32(node, "ti,wires", &ts_dev->wires);  in titsc_parse_dt()
359 	switch (ts_dev->wires) {  in titsc_parse_dt()
369 			&ts_dev->x_plate_resistance);  in titsc_parse_dt()
378 			&ts_dev->coordinate_readouts);  in titsc_parse_dt()
382 				&ts_dev->coordinate_readouts);  in titsc_parse_dt()
388 	if (ts_dev->coordinate_readouts <= 0) {  in titsc_parse_dt()
391 		ts_dev->coordinate_readouts = 5;  in titsc_parse_dt()
395 				   &ts_dev->charge_delay);  in titsc_parse_dt()
401 		ts_dev->charge_delay = CHARGEDLY_OPENDLY;  in titsc_parse_dt()
406 			ts_dev->config_inp, ARRAY_SIZE(ts_dev->config_inp));  in titsc_parse_dt()
415 	struct titsc *ts_dev;  in titsc_probe()  local
421 	ts_dev = kzalloc(sizeof(*ts_dev), GFP_KERNEL);  in titsc_probe()
423 	if (!ts_dev || !input_dev) {  in titsc_probe()
429 	tscadc_dev->tsc = ts_dev;  in titsc_probe()
430 	ts_dev->mfd_tscadc = tscadc_dev;  in titsc_probe()
431 	ts_dev->input = input_dev;  in titsc_probe()
432 	ts_dev->irq = tscadc_dev->irq;  in titsc_probe()
433 	ts_dev->dev = &pdev->dev;  in titsc_probe()
435 	err = titsc_parse_dt(pdev, ts_dev);  in titsc_probe()
441 	err = request_irq(ts_dev->irq, titsc_irq,  in titsc_probe()
442 			  IRQF_SHARED, pdev->dev.driver->name, ts_dev);  in titsc_probe()
449 	err = dev_pm_set_wake_irq(&pdev->dev, ts_dev->irq);  in titsc_probe()
453 	titsc_writel(ts_dev, REG_IRQSTATUS, TSC_IRQENB_MASK);  in titsc_probe()
454 	titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES);  in titsc_probe()
455 	titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_EOS);  in titsc_probe()
456 	err = titsc_config_wires(ts_dev);  in titsc_probe()
461 	titsc_step_config(ts_dev);  in titsc_probe()
462 	titsc_writel(ts_dev, REG_FIFO0THR,  in titsc_probe()
463 			ts_dev->coordinate_readouts * 2 + 2 - 1);  in titsc_probe()
480 	platform_set_drvdata(pdev, ts_dev);  in titsc_probe()
486 	free_irq(ts_dev->irq, ts_dev);  in titsc_probe()
489 	kfree(ts_dev);  in titsc_probe()
495 	struct titsc *ts_dev = platform_get_drvdata(pdev);  in titsc_remove()  local
500 	free_irq(ts_dev->irq, ts_dev);  in titsc_remove()
503 	steps = 2 * ts_dev->coordinate_readouts + 2;  in titsc_remove()
505 	am335x_tsc_se_clr(ts_dev->mfd_tscadc, steps);  in titsc_remove()
507 	input_unregister_device(ts_dev->input);  in titsc_remove()
509 	kfree(ts_dev);  in titsc_remove()
514 	struct titsc *ts_dev = dev_get_drvdata(dev);  in titsc_suspend()  local
518 		titsc_writel(ts_dev, REG_IRQSTATUS, TSC_IRQENB_MASK);  in titsc_suspend()
519 		idle = titsc_readl(ts_dev, REG_IRQENABLE);  in titsc_suspend()
520 		titsc_writel(ts_dev, REG_IRQENABLE,  in titsc_suspend()
522 		titsc_writel(ts_dev, REG_IRQWAKEUP, IRQWKUP_ENB);  in titsc_suspend()
529 	struct titsc *ts_dev = dev_get_drvdata(dev);  in titsc_resume()  local
532 		titsc_writel(ts_dev, REG_IRQWAKEUP,  in titsc_resume()
534 		titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN);  in titsc_resume()
537 	titsc_step_config(ts_dev);  in titsc_resume()
538 	titsc_writel(ts_dev, REG_FIFO0THR,  in titsc_resume()
539 			ts_dev->coordinate_readouts * 2 + 2 - 1);  in titsc_resume()