91 static int atmel_read(struct atmel_captouch_device *capdev,  in atmel_read()  argument
94 	struct i2c_client *client = capdev->client;  in atmel_read()
99 	if (len > sizeof(capdev->xfer_buf) - 2)  in atmel_read()
102 	capdev->xfer_buf[0] = reg;  in atmel_read()
103 	capdev->xfer_buf[1] = len;  in atmel_read()
107 	msg[0].buf = capdev->xfer_buf;  in atmel_read()
112 	msg[1].buf = capdev->xfer_buf;  in atmel_read()
119 	if (capdev->xfer_buf[0] != reg) {  in atmel_read()
122 			capdev->xfer_buf[0], reg);  in atmel_read()
126 	memcpy(data, &capdev->xfer_buf[2], len);  in atmel_read()
138 	struct atmel_captouch_device *capdev = data;  in atmel_captouch_isr()  local
139 	struct device *dev = &capdev->client->dev;  in atmel_captouch_isr()
145 	error = atmel_read(capdev, REG_KEY_STATE, &new_btn, 1);  in atmel_captouch_isr()
153 	changed_btn = new_btn ^ capdev->prev_btn;  in atmel_captouch_isr()
154 	capdev->prev_btn = new_btn;  in atmel_captouch_isr()
156 	for (i = 0; i < capdev->num_btn; i++) {  in atmel_captouch_isr()
158 			input_report_key(capdev->input,  in atmel_captouch_isr()
159 					 capdev->keycodes[i],  in atmel_captouch_isr()
163 	input_sync(capdev->input);  in atmel_captouch_isr()
175 	struct atmel_captouch_device *capdev;  in atmel_captouch_probe()  local
189 	capdev = devm_kzalloc(dev, sizeof(*capdev), GFP_KERNEL);  in atmel_captouch_probe()
190 	if (!capdev)  in atmel_captouch_probe()
193 	capdev->client = client;  in atmel_captouch_probe()
195 	err = atmel_read(capdev, REG_KEY_STATE,  in atmel_captouch_probe()
196 			    &capdev->prev_btn, sizeof(capdev->prev_btn));  in atmel_captouch_probe()
202 	capdev->input = devm_input_allocate_device(dev);  in atmel_captouch_probe()
203 	if (!capdev->input) {  in atmel_captouch_probe()
208 	capdev->input->id.bustype = BUS_I2C;  in atmel_captouch_probe()
209 	capdev->input->id.product = 0x880A;  in atmel_captouch_probe()
210 	capdev->input->id.version = 0;  in atmel_captouch_probe()
211 	capdev->input->name = "ATMegaXX Capacitive Button Controller";  in atmel_captouch_probe()
212 	__set_bit(EV_KEY, capdev->input->evbit);  in atmel_captouch_probe()
221 		__set_bit(EV_REP, capdev->input->evbit);  in atmel_captouch_probe()
223 	capdev->num_btn = of_property_count_u32_elems(node, "linux,keymap");  in atmel_captouch_probe()
224 	if (capdev->num_btn > MAX_NUM_OF_BUTTONS)  in atmel_captouch_probe()
225 		capdev->num_btn = MAX_NUM_OF_BUTTONS;  in atmel_captouch_probe()
228 					 capdev->keycodes,  in atmel_captouch_probe()
229 					 capdev->num_btn);  in atmel_captouch_probe()
236 	for (i = 0; i < capdev->num_btn; i++)  in atmel_captouch_probe()
237 		__set_bit(capdev->keycodes[i], capdev->input->keybit);  in atmel_captouch_probe()
239 	capdev->input->keycode = capdev->keycodes;  in atmel_captouch_probe()
240 	capdev->input->keycodesize = sizeof(capdev->keycodes[0]);  in atmel_captouch_probe()
241 	capdev->input->keycodemax = capdev->num_btn;  in atmel_captouch_probe()
243 	err = input_register_device(capdev->input);  in atmel_captouch_probe()
250 					"atmel_captouch", capdev);  in atmel_captouch_probe()