input/touchscreen/cy8ctma140.c

55 static void cy8ctma140_report(struct cy8ctma140 *ts, u8 *data, int n_fingers)
74 		slot = input_mt_get_slot_by_key(ts->input, id);
82 		dev_dbg(ts->dev, "finger %d: ID %02x (%d, %d) w: %d\n",
85 		input_mt_slot(ts->input, slot);
86 		input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, true);
87 		touchscreen_report_pos(ts->input, &ts->props, x, y, true);
88 		input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, w);
91 	input_mt_sync_frame(ts->input);
92 	input_sync(ts->input);
97 	struct cy8ctma140 *ts = d;
102 			.addr = ts->client->addr,
107 			.addr = ts->client->addr,
116 	ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));
119 			dev_err(ts->dev, "error reading message: %d\n", ret);
121 			dev_err(ts->dev, "wrong number of messages\n");
126 		dev_dbg(ts->dev, "invalid event\n");
132 		dev_err(ts->dev, "unexpected number of fingers: %d\n",
137 	cy8ctma140_report(ts, buf, n_fingers);
143 static int cy8ctma140_init(struct cy8ctma140 *ts)
150 	ret = i2c_master_send(ts->client, addr, 1);
152 		dev_err(ts->dev, "error sending FW info message\n");
155 	ret = i2c_master_recv(ts->client, buf, 5);
157 		dev_err(ts->dev, "error receiving FW info message\n");
161 		dev_err(ts->dev, "got only %d bytes\n", ret);
165 	dev_dbg(ts->dev, "vendor %c%c, HW ID %.2d, FW ver %.4d\n",
171 static int cy8ctma140_power_up(struct cy8ctma140 *ts)
175 	error = regulator_bulk_enable(ARRAY_SIZE(ts->regulators),
176 				      ts->regulators);
178 		dev_err(ts->dev, "failed to enable regulators\n");
187 static void cy8ctma140_power_down(struct cy8ctma140 *ts)
189 	regulator_bulk_disable(ARRAY_SIZE(ts->regulators),
190 			       ts->regulators);
196 	struct cy8ctma140 *ts = d;
198 	cy8ctma140_power_down(ts);
203 	struct cy8ctma140 *ts;
208 	ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL);
209 	if (!ts)
216 	ts->dev = dev;
217 	ts->client = client;
218 	ts->input = input;
237 	touchscreen_parse_properties(input, true, &ts->props);
248 	input_set_drvdata(input, ts);
257 	ts->regulators[0].supply = "vcpin";
258 	ts->regulators[1].supply = "vdd";
259 	error = devm_regulator_bulk_get(dev, ARRAY_SIZE(ts->regulators),
260 				      ts->regulators);
264 	error = cy8ctma140_power_up(ts);
268 	error = devm_add_action_or_reset(dev, cy8ctma140_power_off_action, ts);
276 					  IRQF_ONESHOT, CY8CTMA140_NAME, ts);
282 	error = cy8ctma140_init(ts);
290 	i2c_set_clientdata(client, ts);
298 	struct cy8ctma140 *ts = i2c_get_clientdata(client);
301 		cy8ctma140_power_down(ts);
309 	struct cy8ctma140 *ts = i2c_get_clientdata(client);
313 		error = cy8ctma140_power_up(ts);