input/touchscreen/sun4i-ts.c

12  * The sun4i-ts controller is capable of detecting a second touch, but when a
117 static void sun4i_ts_irq_handle_input(struct sun4i_ts_data *ts, u32 reg_val)
122 		x = readl(ts->base + TP_DATA);
123 		y = readl(ts->base + TP_DATA);
125 		if (!ts->ignore_fifo_data) {
126 			input_report_abs(ts->input, ABS_X, x);
127 			input_report_abs(ts->input, ABS_Y, y);
133 			input_report_key(ts->input, BTN_TOUCH, 1);
134 			input_sync(ts->input);
136 			ts->ignore_fifo_data = false;
141 		ts->ignore_fifo_data = true;
142 		input_report_key(ts->input, BTN_TOUCH, 0);
143 		input_sync(ts->input);
149 	struct sun4i_ts_data *ts = dev_id;
152 	reg_val  = readl(ts->base + TP_INT_FIFOS);
155 		ts->temp_data = readl(ts->base + TEMP_DATA);
157 	if (ts->input)
158 		sun4i_ts_irq_handle_input(ts, reg_val);
160 	writel(reg_val, ts->base + TP_INT_FIFOS);
167 	struct sun4i_ts_data *ts = input_get_drvdata(dev);
171 		TP_UP_IRQ_EN(1), ts->base + TP_INT_FIFOC);
178 	struct sun4i_ts_data *ts = input_get_drvdata(dev);
181 	writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC);
184 static int sun4i_get_temp(const struct sun4i_ts_data *ts, int *temp)
187 	if (ts->temp_data == -1)
190 	*temp = ts->temp_data * ts->temp_step - ts->temp_offset;
207 	struct sun4i_ts_data *ts = dev_get_drvdata(dev);
211 	error = sun4i_get_temp(ts, &temp);
236 	struct sun4i_ts_data *ts;
247 	ts = devm_kzalloc(dev, sizeof(struct sun4i_ts_data), GFP_KERNEL);
248 	if (!ts)
251 	ts->dev = dev;
252 	ts->ignore_fifo_data = true;
253 	ts->temp_data = -1;
254 	if (of_device_is_compatible(np, "allwinner,sun6i-a31-ts")) {
256 		ts->temp_offset = 271000;
257 		ts->temp_step = 167;
258 	} else if (of_device_is_compatible(np, "allwinner,sun4i-a10-ts")) {
265 		ts->temp_offset = 257000;
266 		ts->temp_step = 133;
279 		ts->temp_offset = 144700;
280 		ts->temp_step = 100;
283 	ts_attached = of_property_read_bool(np, "allwinner,ts-attached");
285 		ts->input = devm_input_allocate_device(dev);
286 		if (!ts->input)
289 		ts->input->name = pdev->name;
290 		ts->input->phys = "sun4i_ts/input0";
291 		ts->input->open = sun4i_ts_open;
292 		ts->input->close = sun4i_ts_close;
293 		ts->input->id.bustype = BUS_HOST;
294 		ts->input->id.vendor = 0x0001;
295 		ts->input->id.product = 0x0001;
296 		ts->input->id.version = 0x0100;
297 		ts->input->evbit[0] =  BIT(EV_SYN) | BIT(EV_KEY) | BIT(EV_ABS);
298 		__set_bit(BTN_TOUCH, ts->input->keybit);
299 		input_set_abs_params(ts->input, ABS_X, 0, 4095, 0, 0);
300 		input_set_abs_params(ts->input, ABS_Y, 0, 4095, 0, 0);
301 		input_set_drvdata(ts->input, ts);
304 	ts->base = devm_platform_ioremap_resource(pdev, 0);
305 	if (IS_ERR(ts->base))
306 		return PTR_ERR(ts->base);
308 	ts->irq = platform_get_irq(pdev, 0);
309 	error = devm_request_irq(dev, ts->irq, sun4i_ts_irq, 0, "sun4i-ts", ts);
318 	       ts->base + TP_CTRL0);
327 	       ts->base + TP_CTRL2);
334 	writel(FILTER_EN(1) | FILTER_TYPE(filter_type), ts->base + TP_CTRL3);
337 	writel(TEMP_ENABLE(1) | TEMP_PERIOD(1953), ts->base + TP_TPR);
344 	if (of_device_is_compatible(np, "allwinner,sun6i-a31-ts"))
348 	writel(reg, ts->base + TP_CTRL1);
354 	hwmon = devm_hwmon_device_register_with_groups(ts->dev, "sun4i_ts",
355 						       ts, sun4i_ts_groups);
359 	thermal = devm_thermal_of_zone_register(ts->dev, 0, ts,
364 	writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC);
367 		error = input_register_device(ts->input);
369 			writel(0, ts->base + TP_INT_FIFOC);
374 	platform_set_drvdata(pdev, ts);
380 	struct sun4i_ts_data *ts = platform_get_drvdata(pdev);
383 	if (ts->input)
384 		input_unregister_device(ts->input);
387 	writel(0, ts->base + TP_INT_FIFOC);
391 	{ .compatible = "allwinner,sun4i-a10-ts", },
392 	{ .compatible = "allwinner,sun5i-a13-ts", },
393 	{ .compatible = "allwinner,sun6i-a31-ts", },
400 		.name	= "sun4i-ts",