Lines Matching defs:rain
40 struct rain {
65 static void rain_process_msg(struct rain *rain)
68 const char *cmd = rain->cmd + 3;
88 if (rain->cmd[0] == 'R') {
90 cec_received_msg(rain->adap, &msg);
96 cec_transmit_attempt_done(rain->adap, CEC_TX_STATUS_OK);
99 cec_transmit_attempt_done(rain->adap, CEC_TX_STATUS_NACK);
102 cec_transmit_attempt_done(rain->adap, CEC_TX_STATUS_LOW_DRIVE);
109 struct rain *rain =
110 container_of(work, struct rain, work);
116 spin_lock_irqsave(&rain->buf_lock, flags);
117 if (!rain->buf_len) {
118 spin_unlock_irqrestore(&rain->buf_lock, flags);
122 data = rain->buf[rain->buf_rd_idx];
123 rain->buf_len--;
124 rain->buf_rd_idx = (rain->buf_rd_idx + 1) & 0xff;
126 spin_unlock_irqrestore(&rain->buf_lock, flags);
128 if (!rain->cmd_started && data != '?')
133 rain->cmd[rain->cmd_idx] = '\0';
134 dev_dbg(rain->dev, "received: %s\n", rain->cmd);
135 if (!memcmp(rain->cmd, "REC", 3) ||
136 !memcmp(rain->cmd, "STA", 3)) {
137 rain_process_msg(rain);
139 strscpy(rain->cmd_reply, rain->cmd,
140 sizeof(rain->cmd_reply));
141 complete(&rain->cmd_done);
143 rain->cmd_idx = 0;
144 rain->cmd_started = false;
148 rain->cmd_idx = 0;
149 rain->cmd_started = false;
153 rain->cmd_idx = 0;
154 rain->cmd_started = true;
158 if (rain->cmd_idx >= DATA_SIZE - 1) {
159 dev_dbg(rain->dev,
160 "throwing away %d bytes of garbage\n", rain->cmd_idx);
161 rain->cmd_idx = 0;
163 rain->cmd[rain->cmd_idx++] = data;
172 struct rain *rain = serio_get_drvdata(serio);
174 if (rain->buf_len == DATA_SIZE) {
175 dev_warn_once(rain->dev, "buffer overflow\n");
178 spin_lock(&rain->buf_lock);
179 rain->buf_len++;
180 rain->buf[rain->buf_wr_idx] = data;
181 rain->buf_wr_idx = (rain->buf_wr_idx + 1) & 0xff;
182 spin_unlock(&rain->buf_lock);
183 schedule_work(&rain->work);
189 struct rain *rain = serio_get_drvdata(serio);
191 cancel_work_sync(&rain->work);
192 cec_unregister_adapter(rain->adap);
196 kfree(rain);
199 static int rain_send(struct rain *rain, const char *command)
201 int err = serio_write(rain->serio, '!');
203 dev_dbg(rain->dev, "send: %s\n", command);
205 err = serio_write(rain->serio, *command++);
207 err = serio_write(rain->serio, '~');
212 static int rain_send_and_wait(struct rain *rain,
217 init_completion(&rain->cmd_done);
219 mutex_lock(&rain->write_lock);
220 err = rain_send(rain, cmd);
224 if (!wait_for_completion_timeout(&rain->cmd_done, HZ)) {
228 if (reply && strncmp(rain->cmd_reply, reply, strlen(reply))) {
229 dev_dbg(rain->dev,
231 cmd, rain->cmd_reply, reply);
235 mutex_unlock(&rain->write_lock);
239 static int rain_setup(struct rain *rain, struct serio *serio,
244 err = rain_send_and_wait(rain, "R", "REV");
247 dev_info(rain->dev, "Firmware version %s\n", rain->cmd_reply + 4);
249 err = rain_send_and_wait(rain, "Q 1", "QTY");
252 err = rain_send_and_wait(rain, "c0000", "CFG");
255 return rain_send_and_wait(rain, "A F 0000", "ADR");
265 struct rain *rain = cec_get_drvdata(adap);
271 return rain_send_and_wait(rain, cmd, "ADR");
277 struct rain *rain = cec_get_drvdata(adap);
294 mutex_lock(&rain->write_lock);
295 err = rain_send(rain, cmd);
296 mutex_unlock(&rain->write_lock);
309 struct rain *rain;
314 rain = kzalloc(sizeof(*rain), GFP_KERNEL);
316 if (!rain)
319 rain->serio = serio;
320 rain->adap = cec_allocate_adapter(&rain_cec_adap_ops, rain,
322 err = PTR_ERR_OR_ZERO(rain->adap);
326 rain->dev = &serio->dev;
327 serio_set_drvdata(serio, rain);
328 INIT_WORK(&rain->work, rain_irq_work_handler);
329 mutex_init(&rain->write_lock);
330 spin_lock_init(&rain->buf_lock);
336 err = rain_setup(rain, serio, &log_addrs, &pa);
340 err = cec_register_adapter(rain->adap, &serio->dev);
344 rain->dev = &rain->adap->devnode.dev;
350 cec_delete_adapter(rain->adap);
353 kfree(rain);