efDataDiscreteRateMining averageDataMemoryDefinition.c 李欣儒 commit at 2020-12-11

efDataDiscreteRateMining/dataSharedMemory/averageDataMemoryDefinition.c

@@ -165,3 +165,88 @@ int s3c_adc_start(struct s3c_adc_client *client,
 	}
 
 	client->channel = channel;
+	client->nr_samples = nr_samples;
+
+	if (client->is_ts)
+		adc->ts_pend = client;
+	else
+		list_add_tail(&client->pend, &adc_pending);
+
+	if (!adc->cur)
+		s3c_adc_try(adc);
+
+	spin_unlock_irqrestore(&adc->lock, flags);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(s3c_adc_start);
+
+static void s3c_convert_done(struct s3c_adc_client *client,
+			     unsigned v, unsigned u, unsigned *left)
+{
+	client->result = v;
+	wake_up(client->wait);
+}
+
+int s3c_adc_read(struct s3c_adc_client *client, unsigned int ch)
+{
+	DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wake);
+	int ret;
+
+	client->convert_cb = s3c_convert_done;
+	client->wait = &wake;
+	client->result = -1;
+
+	ret = s3c_adc_start(client, ch, 1);
+	if (ret < 0)
+		goto err;
+
+	ret = wait_event_timeout(wake, client->result >= 0, HZ / 2);
+	if (client->result < 0) {
+		ret = -ETIMEDOUT;
+		goto err;
+	}
+
+	client->convert_cb = NULL;
+	return client->result;
+
+err:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(s3c_adc_read);
+
+static void s3c_adc_default_select(struct s3c_adc_client *client,
+				   unsigned select)
+{
+}
+
+struct s3c_adc_client *s3c_adc_register(struct platform_device *pdev,
+					void (*select)(struct s3c_adc_client *client,
+						       unsigned int selected),
+					void (*conv)(struct s3c_adc_client *client,
+						     unsigned d0, unsigned d1,
+						     unsigned *samples_left),
+					unsigned int is_ts)
+{
+	struct s3c_adc_client *client;
+
+	WARN_ON(!pdev);
+
+	if (!select)
+		select = s3c_adc_default_select;
+
+	if (!pdev)
+		return ERR_PTR(-EINVAL);
+
+	client = kzalloc(sizeof(struct s3c_adc_client), GFP_KERNEL);
+	if (!client) {
+		dev_err(&pdev->dev, "no memory for adc client\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	client->pdev = pdev;
+	client->is_ts = is_ts;
+	client->select_cb = select;
+	client->convert_cb = conv;
+
+	return client;