1 // SPDX-License-Identifier: GPL-2.0-or-later
18 #define TSI_PEN_DOWN_STATUS 0x40
30 	da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, 1 << 0, on);  in da9052_ts_adc_toggle()
31 	tsi->adc_on = on;  in da9052_ts_adc_toggle()
38 	if (!tsi->stopped) {  in da9052_ts_pendwn_irq()
40 		da9052_disable_irq_nosync(tsi->da9052, DA9052_IRQ_PENDOWN);  in da9052_ts_pendwn_irq()
41 		da9052_enable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);  in da9052_ts_pendwn_irq()
45 		schedule_delayed_work(&tsi->ts_pen_work, HZ / 50);  in da9052_ts_pendwn_irq()
53 	struct input_dev *input = tsi->dev;  in da9052_ts_read()
58 	ret = da9052_reg_read(tsi->da9052, DA9052_TSI_X_MSB_REG);  in da9052_ts_read()
59 	if (ret < 0)  in da9052_ts_read()
64 	ret = da9052_reg_read(tsi->da9052, DA9052_TSI_Y_MSB_REG);  in da9052_ts_read()
65 	if (ret < 0)  in da9052_ts_read()
70 	ret = da9052_reg_read(tsi->da9052, DA9052_TSI_Z_MSB_REG);  in da9052_ts_read()
71 	if (ret < 0)  in da9052_ts_read()
76 	ret = da9052_reg_read(tsi->da9052, DA9052_TSI_LSB_REG);  in da9052_ts_read()
77 	if (ret < 0)  in da9052_ts_read()
82 	x = ((x << 2) & 0x3fc) | (v & 0x3);  in da9052_ts_read()
83 	y = ((y << 2) & 0x3fc) | ((v & 0xc) >> 2);  in da9052_ts_read()
84 	z = ((z << 2) & 0x3fc) | ((v & 0x30) >> 4);  in da9052_ts_read()
106 	if (!tsi->stopped) {  in da9052_ts_pen_work()
107 		int ret = da9052_reg_read(tsi->da9052, DA9052_TSI_LSB_REG);  in da9052_ts_pen_work()
108 		if (ret < 0 || (ret & TSI_PEN_DOWN_STATUS)) {  in da9052_ts_pen_work()
110 			schedule_delayed_work(&tsi->ts_pen_work, HZ / 50);  in da9052_ts_pen_work()
112 			struct input_dev *input = tsi->dev;  in da9052_ts_pen_work()
118 			input_report_key(input, BTN_TOUCH, 0);  in da9052_ts_pen_work()
119 			input_report_abs(input, ABS_PRESSURE, 0);  in da9052_ts_pen_work()
126 			ret = da9052_reg_update(tsi->da9052,  in da9052_ts_pen_work()
127 						DA9052_EVENT_B_REG, 0xC0, 0xC0);  in da9052_ts_pen_work()
128 			if (ret < 0)  in da9052_ts_pen_work()
132 			da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);  in da9052_ts_pen_work()
133 			da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);  in da9052_ts_pen_work()
142 	error = da9052_reg_update(da9052, DA9052_GPIO_2_3_REG, 0x30, 0);  in da9052_ts_configure_gpio()
143 	if (error < 0)  in da9052_ts_configure_gpio()
146 	error = da9052_reg_update(da9052, DA9052_GPIO_4_5_REG, 0x33, 0);  in da9052_ts_configure_gpio()
147 	if (error < 0)  in da9052_ts_configure_gpio()
150 	error = da9052_reg_update(da9052, DA9052_GPIO_6_7_REG, 0x33, 0);  in da9052_ts_configure_gpio()
151 	if (error < 0)  in da9052_ts_configure_gpio()
154 	return 0;  in da9052_ts_configure_gpio()
161 	error = da9052_ts_configure_gpio(tsi->da9052);  in da9052_configure_tsi()
166 	error = da9052_reg_update(tsi->da9052, DA9052_ADC_CONT_REG,  in da9052_configure_tsi()
168 	if (error < 0)  in da9052_configure_tsi()
171 	/* TSI_DELAY: 3 slots, TSI_SKIP: 0 slots, TSI_MODE: XYZP */  in da9052_configure_tsi()
172 	error = da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, 0xFC, 0xC0);  in da9052_configure_tsi()
173 	if (error < 0)  in da9052_configure_tsi()
177 	error = da9052_reg_write(tsi->da9052, DA9052_LDO9_REG, 0x59);  in da9052_configure_tsi()
178 	if (error < 0)  in da9052_configure_tsi()
181 	return 0;  in da9052_configure_tsi()
188 	tsi->stopped = false;  in da9052_ts_input_open()
192 	da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);  in da9052_ts_input_open()
195 	return da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG,  in da9052_ts_input_open()
203 	tsi->stopped = true;  in da9052_ts_input_close()
205 	da9052_disable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);  in da9052_ts_input_close()
206 	cancel_delayed_work_sync(&tsi->ts_pen_work);  in da9052_ts_input_close()
208 	if (tsi->adc_on) {  in da9052_ts_input_close()
209 		da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);  in da9052_ts_input_close()
217 		da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);  in da9052_ts_input_close()
221 	da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, 1 << 1, 0);  in da9052_ts_input_close()
231 	da9052 = dev_get_drvdata(pdev->dev.parent);  in da9052_ts_probe()
233 		return -EINVAL;  in da9052_ts_probe()
238 		error = -ENOMEM;  in da9052_ts_probe()
242 	tsi->da9052 = da9052;  in da9052_ts_probe()
243 	tsi->dev = input_dev;  in da9052_ts_probe()
244 	tsi->stopped = true;  in da9052_ts_probe()
245 	INIT_DELAYED_WORK(&tsi->ts_pen_work, da9052_ts_pen_work);  in da9052_ts_probe()
247 	input_dev->id.version = 0x0101;  in da9052_ts_probe()
248 	input_dev->id.vendor = 0x15B6;  in da9052_ts_probe()
249 	input_dev->id.product = 0x9052;  in da9052_ts_probe()
250 	input_dev->name = "Dialog DA9052 TouchScreen Driver";  in da9052_ts_probe()
251 	input_dev->dev.parent = &pdev->dev;  in da9052_ts_probe()
252 	input_dev->open = da9052_ts_input_open;  in da9052_ts_probe()
253 	input_dev->close = da9052_ts_input_close;  in da9052_ts_probe()
255 	__set_bit(EV_ABS, input_dev->evbit);  in da9052_ts_probe()
256 	__set_bit(EV_KEY, input_dev->evbit);  in da9052_ts_probe()
257 	__set_bit(BTN_TOUCH, input_dev->keybit);  in da9052_ts_probe()
259 	input_set_abs_params(input_dev, ABS_X, 0, 1023, 0, 0);  in da9052_ts_probe()
260 	input_set_abs_params(input_dev, ABS_Y, 0, 1023, 0, 0);  in da9052_ts_probe()
261 	input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1023, 0, 0);  in da9052_ts_probe()
266 	da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, 1 << 1, 0);  in da9052_ts_probe()
271 	error = da9052_request_irq(tsi->da9052, DA9052_IRQ_PENDOWN,  in da9052_ts_probe()
272 				"pendown-irq", da9052_ts_pendwn_irq, tsi);  in da9052_ts_probe()
274 		dev_err(tsi->da9052->dev,  in da9052_ts_probe()
279 	error = da9052_request_irq(tsi->da9052, DA9052_IRQ_TSIREADY,  in da9052_ts_probe()
280 				"tsiready-irq", da9052_ts_datardy_irq, tsi);  in da9052_ts_probe()
282 		dev_err(tsi->da9052->dev,  in da9052_ts_probe()
288 	da9052_disable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);  in da9052_ts_probe()
289 	da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);  in da9052_ts_probe()
295 	error = input_register_device(tsi->dev);  in da9052_ts_probe()
301 	return 0;  in da9052_ts_probe()
304 	da9052_free_irq(tsi->da9052, DA9052_IRQ_TSIREADY, tsi);  in da9052_ts_probe()
306 	da9052_free_irq(tsi->da9052, DA9052_IRQ_PENDOWN, tsi);  in da9052_ts_probe()
318 	da9052_reg_write(tsi->da9052, DA9052_LDO9_REG, 0x19);  in da9052_ts_remove()
320 	da9052_free_irq(tsi->da9052, DA9052_IRQ_TSIREADY, tsi);  in da9052_ts_remove()
321 	da9052_free_irq(tsi->da9052, DA9052_IRQ_PENDOWN, tsi);  in da9052_ts_remove()
323 	input_unregister_device(tsi->dev);  in da9052_ts_remove()
326 	return 0;  in da9052_ts_remove()
333 		.name	= "da9052-tsi",
342 MODULE_ALIAS("platform:da9052-tsi");