66 static inline int is_pen_down(struct da9034_touch *touch)  in is_pen_down()  argument
68 	return da903x_query_status(touch->da9034_dev, DA9034_STATUS_PEN_DOWN);  in is_pen_down()
71 static inline int detect_pen_down(struct da9034_touch *touch, int on)  in detect_pen_down()  argument
74 		return da903x_set_bits(touch->da9034_dev,  in detect_pen_down()
77 		return da903x_clr_bits(touch->da9034_dev,  in detect_pen_down()
81 static int read_tsi(struct da9034_touch *touch)  in read_tsi()  argument
86 	ret = da903x_read(touch->da9034_dev, DA9034_TSI_X_MSB, &_x);  in read_tsi()
90 	ret = da903x_read(touch->da9034_dev, DA9034_TSI_Y_MSB, &_y);  in read_tsi()
94 	ret = da903x_read(touch->da9034_dev, DA9034_TSI_XY_LSB, &_v);  in read_tsi()
98 	touch->last_x = ((_x << 2) & 0x3fc) | (_v & 0x3);  in read_tsi()
99 	touch->last_y = ((_y << 2) & 0x3fc) | ((_v & 0xc) >> 2);  in read_tsi()
104 static inline int start_tsi(struct da9034_touch *touch)  in start_tsi()  argument
106 	return da903x_set_bits(touch->da9034_dev,  in start_tsi()
110 static inline int stop_tsi(struct da9034_touch *touch)  in stop_tsi()  argument
112 	return da903x_clr_bits(touch->da9034_dev,  in stop_tsi()
116 static inline void report_pen_down(struct da9034_touch *touch)  in report_pen_down()  argument
118 	int x = touch->last_x;  in report_pen_down()
119 	int y = touch->last_y;  in report_pen_down()
122 	if (touch->x_inverted)  in report_pen_down()
125 	if (touch->y_inverted)  in report_pen_down()
128 	input_report_abs(touch->input_dev, ABS_X, x);  in report_pen_down()
129 	input_report_abs(touch->input_dev, ABS_Y, y);  in report_pen_down()
130 	input_report_key(touch->input_dev, BTN_TOUCH, 1);  in report_pen_down()
132 	input_sync(touch->input_dev);  in report_pen_down()
135 static inline void report_pen_up(struct da9034_touch *touch)  in report_pen_up()  argument
137 	input_report_key(touch->input_dev, BTN_TOUCH, 0);  in report_pen_up()
138 	input_sync(touch->input_dev);  in report_pen_up()
141 static void da9034_event_handler(struct da9034_touch *touch, int event)  in da9034_event_handler()  argument
145 	switch (touch->state) {  in da9034_event_handler()
153 		err = start_tsi(touch);  in da9034_event_handler()
157 		touch->state = STATE_BUSY;  in da9034_event_handler()
164 		err = read_tsi(touch);  in da9034_event_handler()
171 		err = stop_tsi(touch);  in da9034_event_handler()
175 		touch->state = STATE_STOP;  in da9034_event_handler()
183 		da9034_event_handler(touch,  in da9034_event_handler()
184 				     is_pen_down(touch) ? EVENT_PEN_DOWN :  in da9034_event_handler()
190 			report_pen_down(touch);  in da9034_event_handler()
191 			schedule_delayed_work(&touch->tsi_work,  in da9034_event_handler()
192 				msecs_to_jiffies(touch->interval_ms));  in da9034_event_handler()
193 			touch->state = STATE_WAIT;  in da9034_event_handler()
197 			report_pen_up(touch);  in da9034_event_handler()
198 			touch->state = STATE_IDLE;  in da9034_event_handler()
206 		if (is_pen_down(touch)) {  in da9034_event_handler()
207 			start_tsi(touch);  in da9034_event_handler()
208 			touch->state = STATE_BUSY;  in da9034_event_handler()
210 			report_pen_up(touch);  in da9034_event_handler()
211 			touch->state = STATE_IDLE;  in da9034_event_handler()
218 	touch->state = STATE_IDLE;  in da9034_event_handler()
219 	stop_tsi(touch);  in da9034_event_handler()
220 	detect_pen_down(touch, 1);  in da9034_event_handler()
225 	struct da9034_touch *touch =  in da9034_tsi_work()  local
228 	da9034_event_handler(touch, EVENT_TIMEDOUT);  in da9034_tsi_work()
234 	struct da9034_touch *touch =  in da9034_touch_notifier()  local
238 		da9034_event_handler(touch, EVENT_TSI_READY);  in da9034_touch_notifier()
240 	if ((event & DA9034_EVENT_PEN_DOWN) && touch->state == STATE_IDLE)  in da9034_touch_notifier()
241 		da9034_event_handler(touch, EVENT_PEN_DOWN);  in da9034_touch_notifier()
248 	struct da9034_touch *touch = input_get_drvdata(dev);  in da9034_touch_open()  local
251 	ret = da903x_register_notifier(touch->da9034_dev, &touch->notifier,  in da9034_touch_open()
257 	ret = da903x_set_bits(touch->da9034_dev,  in da9034_touch_open()
263 	ret = da903x_write(touch->da9034_dev, DA9034_TSI_CTRL1, 0x1b);  in da9034_touch_open()
267 	ret = da903x_write(touch->da9034_dev, DA9034_TSI_CTRL2, 0x00);  in da9034_touch_open()
271 	touch->state = STATE_IDLE;  in da9034_touch_open()
272 	detect_pen_down(touch, 1);  in da9034_touch_open()
279 	struct da9034_touch *touch = input_get_drvdata(dev);  in da9034_touch_close()  local
281 	da903x_unregister_notifier(touch->da9034_dev, &touch->notifier,  in da9034_touch_close()
284 	cancel_delayed_work_sync(&touch->tsi_work);  in da9034_touch_close()
286 	touch->state = STATE_IDLE;  in da9034_touch_close()
287 	stop_tsi(touch);  in da9034_touch_close()
288 	detect_pen_down(touch, 0);  in da9034_touch_close()
291 	da903x_clr_bits(touch->da9034_dev,  in da9034_touch_close()
299 	struct da9034_touch *touch;  in da9034_touch_probe()  local
303 	touch = devm_kzalloc(&pdev->dev, sizeof(struct da9034_touch),  in da9034_touch_probe()
305 	if (!touch) {  in da9034_touch_probe()
310 	touch->da9034_dev = pdev->dev.parent;  in da9034_touch_probe()
313 		touch->interval_ms	= pdata->interval_ms;  in da9034_touch_probe()
314 		touch->x_inverted	= pdata->x_inverted;  in da9034_touch_probe()
315 		touch->y_inverted	= pdata->y_inverted;  in da9034_touch_probe()
318 		touch->interval_ms	= 10;  in da9034_touch_probe()
321 	INIT_DELAYED_WORK(&touch->tsi_work, da9034_tsi_work);  in da9034_touch_probe()
322 	touch->notifier.notifier_call = da9034_touch_notifier;  in da9034_touch_probe()
344 	touch->input_dev = input_dev;  in da9034_touch_probe()
345 	input_set_drvdata(input_dev, touch);  in da9034_touch_probe()
356 		.name	= "da9034-touch",
365 MODULE_ALIAS("platform:da9034-touch");