219 static int rpi_touchscreen_i2c_read(struct rpi_touchscreen *ts, u8 reg)  in rpi_touchscreen_i2c_read()  argument
221 	return i2c_smbus_read_byte_data(ts->i2c, reg);  in rpi_touchscreen_i2c_read()
224 static void rpi_touchscreen_i2c_write(struct rpi_touchscreen *ts,  in rpi_touchscreen_i2c_write()  argument
229 	ret = i2c_smbus_write_byte_data(ts->i2c, reg, val);  in rpi_touchscreen_i2c_write()
231 		dev_err(&ts->i2c->dev, "I2C write failed: %d\n", ret);  in rpi_touchscreen_i2c_write()
234 static int rpi_touchscreen_write(struct rpi_touchscreen *ts, u16 reg, u32 val)  in rpi_touchscreen_write()  argument
245 	mipi_dsi_generic_write(ts->dsi, msg, sizeof(msg));  in rpi_touchscreen_write()
252 	struct rpi_touchscreen *ts = panel_to_ts(panel);  in rpi_touchscreen_disable()  local
254 	rpi_touchscreen_i2c_write(ts, REG_PWM, 0);  in rpi_touchscreen_disable()
256 	rpi_touchscreen_i2c_write(ts, REG_POWERON, 0);  in rpi_touchscreen_disable()
269 	struct rpi_touchscreen *ts = panel_to_ts(panel);  in rpi_touchscreen_prepare()  local
272 	rpi_touchscreen_i2c_write(ts, REG_POWERON, 1);  in rpi_touchscreen_prepare()
275 		if (rpi_touchscreen_i2c_read(ts, REG_PORTB) & 1)  in rpi_touchscreen_prepare()
279 	rpi_touchscreen_write(ts, DSI_LANEENABLE,  in rpi_touchscreen_prepare()
282 	rpi_touchscreen_write(ts, PPI_D0S_CLRSIPOCOUNT, 0x05);  in rpi_touchscreen_prepare()
283 	rpi_touchscreen_write(ts, PPI_D1S_CLRSIPOCOUNT, 0x05);  in rpi_touchscreen_prepare()
284 	rpi_touchscreen_write(ts, PPI_D0S_ATMR, 0x00);  in rpi_touchscreen_prepare()
285 	rpi_touchscreen_write(ts, PPI_D1S_ATMR, 0x00);  in rpi_touchscreen_prepare()
286 	rpi_touchscreen_write(ts, PPI_LPTXTIMECNT, 0x03);  in rpi_touchscreen_prepare()
288 	rpi_touchscreen_write(ts, SPICMR, 0x00);  in rpi_touchscreen_prepare()
289 	rpi_touchscreen_write(ts, LCDCTRL, 0x00100150);  in rpi_touchscreen_prepare()
290 	rpi_touchscreen_write(ts, SYSCTRL, 0x040f);  in rpi_touchscreen_prepare()
293 	rpi_touchscreen_write(ts, PPI_STARTPPI, 0x01);  in rpi_touchscreen_prepare()
294 	rpi_touchscreen_write(ts, DSI_STARTDSI, 0x01);  in rpi_touchscreen_prepare()
302 	struct rpi_touchscreen *ts = panel_to_ts(panel);  in rpi_touchscreen_enable()  local
305 	rpi_touchscreen_i2c_write(ts, REG_PWM, 255);  in rpi_touchscreen_enable()
312 	rpi_touchscreen_i2c_write(ts, REG_PORTA, BIT(2));  in rpi_touchscreen_enable()
366 	struct rpi_touchscreen *ts;  in rpi_touchscreen_probe()  local
376 	ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL);  in rpi_touchscreen_probe()
377 	if (!ts)  in rpi_touchscreen_probe()
380 	i2c_set_clientdata(i2c, ts);  in rpi_touchscreen_probe()
382 	ts->i2c = i2c;  in rpi_touchscreen_probe()
384 	ver = rpi_touchscreen_i2c_read(ts, REG_ID);  in rpi_touchscreen_probe()
400 	rpi_touchscreen_i2c_write(ts, REG_POWERON, 0);  in rpi_touchscreen_probe()
424 	ts->dsi = mipi_dsi_device_register_full(host, &info);  in rpi_touchscreen_probe()
425 	if (IS_ERR(ts->dsi)) {  in rpi_touchscreen_probe()
427 			PTR_ERR(ts->dsi));  in rpi_touchscreen_probe()
428 		return PTR_ERR(ts->dsi);  in rpi_touchscreen_probe()
431 	drm_panel_init(&ts->base, dev, &rpi_touchscreen_funcs,  in rpi_touchscreen_probe()
437 	drm_panel_add(&ts->base);  in rpi_touchscreen_probe()
448 	struct rpi_touchscreen *ts = i2c_get_clientdata(i2c);  in rpi_touchscreen_remove()  local
450 	mipi_dsi_detach(ts->dsi);  in rpi_touchscreen_remove()
452 	drm_panel_remove(&ts->base);  in rpi_touchscreen_remove()
454 	mipi_dsi_device_unregister(ts->dsi);  in rpi_touchscreen_remove()