72 static int titsc_config_wires(struct titsc *ts_dev)  in titsc_config_wires()  argument
83 		analog_line[i] = (ts_dev->config_inp[i] & 0xF0) >> 4;  in titsc_config_wires()
84 		wire_order[i] = ts_dev->config_inp[i] & 0x0F;  in titsc_config_wires()
102 			ts_dev->bit_xp = bit_cfg;  in titsc_config_wires()
103 			ts_dev->inp_xp = an_line;  in titsc_config_wires()
107 			ts_dev->bit_xn = bit_cfg;  in titsc_config_wires()
108 			ts_dev->inp_xn = an_line;  in titsc_config_wires()
112 			ts_dev->bit_yp = bit_cfg;  in titsc_config_wires()
113 			ts_dev->inp_yp = an_line;  in titsc_config_wires()
116 			ts_dev->bit_yn = bit_cfg;  in titsc_config_wires()
117 			ts_dev->inp_yn = an_line;  in titsc_config_wires()
124 static void titsc_step_config(struct titsc *ts_dev)  in titsc_step_config()  argument
132 			STEPCONFIG_AVG_16 | ts_dev->bit_xp;  in titsc_step_config()
133 	switch (ts_dev->wires) {  in titsc_step_config()
135 		config |= STEPCONFIG_INP(ts_dev->inp_yp) | ts_dev->bit_xn;  in titsc_step_config()
138 		config |= ts_dev->bit_yn |  in titsc_step_config()
139 				STEPCONFIG_INP_AN4 | ts_dev->bit_xn |  in titsc_step_config()
140 				ts_dev->bit_yp;  in titsc_step_config()
143 		config |= STEPCONFIG_INP(ts_dev->inp_yp) | ts_dev->bit_xn;  in titsc_step_config()
147 	tsc_steps = ts_dev->coordinate_readouts * 2 + 2;  in titsc_step_config()
151 	for (i = end_step - ts_dev->coordinate_readouts; i < end_step; i++) {  in titsc_step_config()
152 		titsc_writel(ts_dev, REG_STEPCONFIG(i), config);  in titsc_step_config()
153 		titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY);  in titsc_step_config()
158 			STEPCONFIG_AVG_16 | ts_dev->bit_yn |  in titsc_step_config()
160 	switch (ts_dev->wires) {  in titsc_step_config()
162 		config |= ts_dev->bit_yp | STEPCONFIG_INP(ts_dev->inp_xp);  in titsc_step_config()
165 		config |= ts_dev->bit_xp | STEPCONFIG_INP_AN4 |  in titsc_step_config()
169 		config |= ts_dev->bit_yp | STEPCONFIG_INP(ts_dev->inp_xp);  in titsc_step_config()
174 	end_step = first_step + ts_dev->coordinate_readouts;  in titsc_step_config()
176 		titsc_writel(ts_dev, REG_STEPCONFIG(i), config);  in titsc_step_config()
177 		titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY);  in titsc_step_config()
182 	config = titsc_readl(ts_dev, REG_IDLECONFIG);  in titsc_step_config()
183 	titsc_writel(ts_dev, REG_CHARGECONFIG, config);  in titsc_step_config()
184 	titsc_writel(ts_dev, REG_CHARGEDELAY, ts_dev->charge_delay);  in titsc_step_config()
188 			STEPCONFIG_AVG_16 | ts_dev->bit_yp |  in titsc_step_config()
189 			ts_dev->bit_xn | STEPCONFIG_INM_ADCREFM |  in titsc_step_config()
190 			STEPCONFIG_INP(ts_dev->inp_xp);  in titsc_step_config()
191 	titsc_writel(ts_dev, REG_STEPCONFIG(end_step), config);  in titsc_step_config()
192 	titsc_writel(ts_dev, REG_STEPDELAY(end_step),  in titsc_step_config()
196 	config |= STEPCONFIG_INP(ts_dev->inp_yn);  in titsc_step_config()
197 	titsc_writel(ts_dev, REG_STEPCONFIG(end_step), config);  in titsc_step_config()
198 	titsc_writel(ts_dev, REG_STEPDELAY(end_step),  in titsc_step_config()
206 	ts_dev->step_mask = stepenable;  in titsc_step_config()
207 	am335x_tsc_se_set_cache(ts_dev->mfd_tscadc, ts_dev->step_mask);  in titsc_step_config()
215 static void titsc_read_coordinates(struct titsc *ts_dev,  in titsc_read_coordinates()  argument
220 	unsigned int creads = ts_dev->coordinate_readouts;  in titsc_read_coordinates()
223 		yvals[i] = titsc_readl(ts_dev, REG_FIFO0);  in titsc_read_coordinates()
227 	*z1 = titsc_readl(ts_dev, REG_FIFO0);  in titsc_read_coordinates()
229 	*z2 = titsc_readl(ts_dev, REG_FIFO0);  in titsc_read_coordinates()
233 		xvals[i] = titsc_readl(ts_dev, REG_FIFO0);  in titsc_read_coordinates()
269 	struct titsc *ts_dev = dev;  in titsc_irq()  local
270 	struct input_dev *input_dev = ts_dev->input;  in titsc_irq()
275 	status = titsc_readl(ts_dev, REG_RAWIRQSTATUS);  in titsc_irq()
277 		ts_dev->pen_down = true;  in titsc_irq()
279 		pm_stay_awake(ts_dev->mfd_tscadc->dev);  in titsc_irq()
283 		fsm = titsc_readl(ts_dev, REG_ADCFSM);  in titsc_irq()
285 			ts_dev->pen_down = false;  in titsc_irq()
289 			pm_relax(ts_dev->mfd_tscadc->dev);  in titsc_irq()
291 			ts_dev->pen_down = true;  in titsc_irq()
305 		titsc_read_coordinates(ts_dev, &x, &y, &z1, &z2);  in titsc_irq()
307 		if (ts_dev->pen_down && z1 != 0 && z2 != 0) {  in titsc_irq()
315 			z *= ts_dev->x_plate_resistance;  in titsc_irq()
330 		titsc_writel(ts_dev, REG_IRQSTATUS, irqclr);  in titsc_irq()
332 			am335x_tsc_se_set_cache(ts_dev->mfd_tscadc,  in titsc_irq()
333 						ts_dev->step_mask);  in titsc_irq()
340 					struct titsc *ts_dev)  in titsc_parse_dt()  argument
348 	err = of_property_read_u32(node, "ti,wires", &ts_dev->wires);  in titsc_parse_dt()
351 	switch (ts_dev->wires) {  in titsc_parse_dt()
361 			&ts_dev->x_plate_resistance);  in titsc_parse_dt()
370 			&ts_dev->coordinate_readouts);  in titsc_parse_dt()
374 				&ts_dev->coordinate_readouts);  in titsc_parse_dt()
380 	if (ts_dev->coordinate_readouts <= 0) {  in titsc_parse_dt()
383 		ts_dev->coordinate_readouts = 5;  in titsc_parse_dt()
387 				   &ts_dev->charge_delay);  in titsc_parse_dt()
393 		ts_dev->charge_delay = CHARGEDLY_OPENDLY;  in titsc_parse_dt()
398 			ts_dev->config_inp, ARRAY_SIZE(ts_dev->config_inp));  in titsc_parse_dt()
407 	struct titsc *ts_dev;  in titsc_probe()  local
413 	ts_dev = kzalloc(sizeof(*ts_dev), GFP_KERNEL);  in titsc_probe()
415 	if (!ts_dev || !input_dev) {  in titsc_probe()
421 	tscadc_dev->tsc = ts_dev;  in titsc_probe()
422 	ts_dev->mfd_tscadc = tscadc_dev;  in titsc_probe()
423 	ts_dev->input = input_dev;  in titsc_probe()
424 	ts_dev->irq = tscadc_dev->irq;  in titsc_probe()
426 	err = titsc_parse_dt(pdev, ts_dev);  in titsc_probe()
432 	err = request_irq(ts_dev->irq, titsc_irq,  in titsc_probe()
433 			  IRQF_SHARED, pdev->dev.driver->name, ts_dev);  in titsc_probe()
439 	titsc_writel(ts_dev, REG_IRQSTATUS, TSC_IRQENB_MASK);  in titsc_probe()
440 	titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES);  in titsc_probe()
441 	titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_EOS);  in titsc_probe()
442 	err = titsc_config_wires(ts_dev);  in titsc_probe()
447 	titsc_step_config(ts_dev);  in titsc_probe()
448 	titsc_writel(ts_dev, REG_FIFO0THR,  in titsc_probe()
449 			ts_dev->coordinate_readouts * 2 + 2 - 1);  in titsc_probe()
466 	platform_set_drvdata(pdev, ts_dev);  in titsc_probe()
470 	free_irq(ts_dev->irq, ts_dev);  in titsc_probe()
473 	kfree(ts_dev);  in titsc_probe()
479 	struct titsc *ts_dev = platform_get_drvdata(pdev);  in titsc_remove()  local
482 	free_irq(ts_dev->irq, ts_dev);  in titsc_remove()
485 	steps = 2 * ts_dev->coordinate_readouts + 2;  in titsc_remove()
487 	am335x_tsc_se_clr(ts_dev->mfd_tscadc, steps);  in titsc_remove()
489 	input_unregister_device(ts_dev->input);  in titsc_remove()
491 	kfree(ts_dev);  in titsc_remove()
497 	struct titsc *ts_dev = dev_get_drvdata(dev);  in titsc_suspend()  local
503 		titsc_writel(ts_dev, REG_IRQSTATUS, TSC_IRQENB_MASK);  in titsc_suspend()
504 		idle = titsc_readl(ts_dev, REG_IRQENABLE);  in titsc_suspend()
505 		titsc_writel(ts_dev, REG_IRQENABLE,  in titsc_suspend()
507 		titsc_writel(ts_dev, REG_IRQWAKEUP, IRQWKUP_ENB);  in titsc_suspend()
514 	struct titsc *ts_dev = dev_get_drvdata(dev);  in titsc_resume()  local
519 		titsc_writel(ts_dev, REG_IRQWAKEUP,  in titsc_resume()
521 		titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN);  in titsc_resume()
522 		pm_relax(ts_dev->mfd_tscadc->dev);  in titsc_resume()
524 	titsc_step_config(ts_dev);  in titsc_resume()
525 	titsc_writel(ts_dev, REG_FIFO0THR,  in titsc_resume()
526 			ts_dev->coordinate_readouts * 2 + 2 - 1);  in titsc_resume()