3  * Driver for the TAOS evaluation modules
41 /* TAOS TSL2550 EVM */
49 	if (!strncmp(adapter->name, "TAOS TSL2550 EVM", 16)) {  in taos_instantiate_device()
63 	struct taos_data *taos = serio_get_drvdata(serio);  in taos_smbus_xfer()  local
68 	p = taos->buffer;  in taos_smbus_xfer()
72 	if (addr != taos->addr)  in taos_smbus_xfer()
93 	/* Send the transaction to the TAOS EVM */  in taos_smbus_xfer()
94 	dev_dbg(&adapter->dev, "Command buffer: %s\n", taos->buffer);  in taos_smbus_xfer()
95 	for (p = taos->buffer; *p; p++)  in taos_smbus_xfer()
98 	taos->addr = addr;  in taos_smbus_xfer()
101 	taos->pos = 0;  in taos_smbus_xfer()
102 	taos->state = TAOS_STATE_RECV;  in taos_smbus_xfer()
104 	wait_event_interruptible_timeout(wq, taos->state == TAOS_STATE_IDLE,  in taos_smbus_xfer()
106 	if (taos->state != TAOS_STATE_IDLE  in taos_smbus_xfer()
107 	 || taos->pos != 5) {  in taos_smbus_xfer()
109 			taos->pos);  in taos_smbus_xfer()
112 	dev_dbg(&adapter->dev, "Answer buffer: %s\n", taos->buffer);  in taos_smbus_xfer()
115 	p = taos->buffer + 1;  in taos_smbus_xfer()
152 	struct taos_data *taos = serio_get_drvdata(serio);  in taos_interrupt()  local
154 	switch (taos->state) {  in taos_interrupt()
156 		taos->buffer[taos->pos++] = data;  in taos_interrupt()
158 		 || taos->pos == TAOS_BUFFER_SIZE - 1) {  in taos_interrupt()
159 			taos->buffer[taos->pos] = '\0';  in taos_interrupt()
160 			taos->state = TAOS_STATE_IDLE;  in taos_interrupt()
165 		taos->state = TAOS_STATE_IDLE;  in taos_interrupt()
169 		taos->buffer[taos->pos++] = data;  in taos_interrupt()
171 			taos->buffer[taos->pos] = '\0';  in taos_interrupt()
172 			taos->state = TAOS_STATE_IDLE;  in taos_interrupt()
187 	start = strstr(buffer, "TAOS ");  in taos_adapter_name()
201 	struct taos_data *taos;  in taos_connect()  local
206 	taos = kzalloc(sizeof(struct taos_data), GFP_KERNEL);  in taos_connect()
207 	if (!taos) {  in taos_connect()
211 	taos->state = TAOS_STATE_INIT;  in taos_connect()
212 	serio_set_drvdata(serio, taos);  in taos_connect()
218 	adapter = &taos->adapter;  in taos_connect()
224 	/* Reset the TAOS evaluation module to identify it */  in taos_connect()
226 	wait_event_interruptible_timeout(wq, taos->state == TAOS_STATE_IDLE,  in taos_connect()
229 	if (taos->state != TAOS_STATE_IDLE) {  in taos_connect()
231 		dev_err(&serio->dev, "TAOS EVM reset failed (state=%d, "  in taos_connect()
232 			"pos=%d)\n", taos->state, taos->pos);  in taos_connect()
236 	name = taos_adapter_name(taos->buffer);  in taos_connect()
239 		dev_err(&serio->dev, "TAOS EVM identification failed\n");  in taos_connect()
245 	taos->state = TAOS_STATE_EOFF;  in taos_connect()
248 	wait_event_interruptible_timeout(wq, taos->state == TAOS_STATE_IDLE,  in taos_connect()
250 	if (taos->state != TAOS_STATE_IDLE) {  in taos_connect()
252 		dev_err(&serio->dev, "TAOS EVM echo off failed "  in taos_connect()
253 			"(state=%d)\n", taos->state);  in taos_connect()
260 	dev_info(&serio->dev, "Connected to TAOS EVM\n");  in taos_connect()
262 	taos->client = taos_instantiate_device(adapter);  in taos_connect()
268 	kfree(taos);  in taos_connect()
275 	struct taos_data *taos = serio_get_drvdata(serio);  in taos_disconnect()  local
277 	i2c_unregister_device(taos->client);  in taos_disconnect()
278 	i2c_del_adapter(&taos->adapter);  in taos_disconnect()
280 	kfree(taos);  in taos_disconnect()
282 	dev_info(&serio->dev, "Disconnected from TAOS EVM\n");  in taos_disconnect()
298 		.name	= "taos-evm",
300 	.description	= "TAOS evaluation module driver",
310 MODULE_DESCRIPTION("TAOS evaluation module driver");