28 static void da9052_ts_adc_toggle(struct da9052_tsi *tsi, bool on)  in da9052_ts_adc_toggle()  argument
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()
36 	struct da9052_tsi *tsi = data;  in da9052_ts_pendwn_irq()  local
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()
43 		da9052_ts_adc_toggle(tsi, true);  in da9052_ts_pendwn_irq()
45 		schedule_delayed_work(&tsi->ts_pen_work, HZ / 50);  in da9052_ts_pendwn_irq()
51 static void da9052_ts_read(struct da9052_tsi *tsi)  in da9052_ts_read()  argument
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()
64 	ret = da9052_reg_read(tsi->da9052, DA9052_TSI_Y_MSB_REG);  in da9052_ts_read()
70 	ret = da9052_reg_read(tsi->da9052, DA9052_TSI_Z_MSB_REG);  in da9052_ts_read()
76 	ret = da9052_reg_read(tsi->da9052, DA9052_TSI_LSB_REG);  in da9052_ts_read()
95 	struct da9052_tsi *tsi = data;  in da9052_ts_datardy_irq()  local
97 	da9052_ts_read(tsi);  in da9052_ts_datardy_irq()
104 	struct da9052_tsi *tsi = container_of(work, struct da9052_tsi,  in da9052_ts_pen_work()  local
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()
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()
115 			da9052_ts_adc_toggle(tsi, false);  in da9052_ts_pen_work()
126 			ret = da9052_reg_update(tsi->da9052,  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()
157 static int da9052_configure_tsi(struct da9052_tsi *tsi)  in da9052_configure_tsi()  argument
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()
172 	error = da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, 0xFC, 0xC0);  in da9052_configure_tsi()
177 	error = da9052_reg_write(tsi->da9052, DA9052_LDO9_REG, 0x59);  in da9052_configure_tsi()
186 	struct da9052_tsi *tsi = input_get_drvdata(input_dev);  in da9052_ts_input_open()  local
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()
201 	struct da9052_tsi *tsi = input_get_drvdata(input_dev);  in da9052_ts_input_close()  local
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()
210 		da9052_ts_adc_toggle(tsi, false);  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()
227 	struct da9052_tsi *tsi;  in da9052_ts_probe()  local
235 	tsi = kzalloc(sizeof(struct da9052_tsi), GFP_KERNEL);  in da9052_ts_probe()
237 	if (!tsi || !input_dev) {  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()
263 	input_set_drvdata(input_dev, tsi);  in da9052_ts_probe()
266 	da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, 1 << 1, 0);  in da9052_ts_probe()
269 	da9052_ts_adc_toggle(tsi, false);  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()
291 	error = da9052_configure_tsi(tsi);  in da9052_ts_probe()
295 	error = input_register_device(tsi->dev);  in da9052_ts_probe()
299 	platform_set_drvdata(pdev, tsi);  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()
308 	kfree(tsi);  in da9052_ts_probe()
316 	struct da9052_tsi *tsi = platform_get_drvdata(pdev);  in da9052_ts_remove()  local
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()
324 	kfree(tsi);  in da9052_ts_remove()