ASoC: SOF: Convert the generic IPC message injector into SOF client

Move the IPC message injection code out from the debug file as separate
SOF client driver.

Based on the kernel configuration, the device registration for the new IPC
message injector is going to happen in the core.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220210150525.30756-9-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 0 insertions, 108 deletions

diff --git a/sound/soc/sof/debug.c b/sound/soc/sof/debug.c
index e3a5f77bbd4d..937fe6e11d0d 100644
--- a/sound/soc/sof/debug.c
+++ b/sound/soc/sof/debug.c
@@ -234,105 +234,6 @@ static int snd_sof_debugfs_probe_item(struct snd_sof_dev *sdev,
 }
 #endif
 
-
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_MSG_INJECTOR)
-static ssize_t msg_inject_read(struct file *file, char __user *buffer,
-			       size_t count, loff_t *ppos)
-{
-	struct snd_sof_dfsentry *dfse = file->private_data;
-	struct sof_ipc_reply *rhdr = dfse->msg_inject_rx;
-
-	if (!rhdr->hdr.size || !count || *ppos)
-		return 0;
-
-	if (count > rhdr->hdr.size)
-		count = rhdr->hdr.size;
-
-	if (copy_to_user(buffer, dfse->msg_inject_rx, count))
-		return -EFAULT;
-
-	*ppos += count;
-	return count;
-}
-
-static ssize_t msg_inject_write(struct file *file, const char __user *buffer,
-				size_t count, loff_t *ppos)
-{
-	struct snd_sof_dfsentry *dfse = file->private_data;
-	struct snd_sof_dev *sdev = dfse->sdev;
-	struct sof_ipc_cmd_hdr *hdr = dfse->msg_inject_tx;
-	size_t size;
-	int ret, err;
-
-	if (*ppos)
-		return 0;
-
-	size = simple_write_to_buffer(dfse->msg_inject_tx, SOF_IPC_MSG_MAX_SIZE,
-				      ppos, buffer, count);
-	if (size != count)
-		return size > 0 ? -EFAULT : size;
-
-	ret = pm_runtime_get_sync(sdev->dev);
-	if (ret < 0 && ret != -EACCES) {
-		dev_err_ratelimited(sdev->dev, "%s: DSP resume failed: %d\n",
-				    __func__, ret);
-		pm_runtime_put_noidle(sdev->dev);
-		goto out;
-	}
-
-	/* send the message */
-	memset(dfse->msg_inject_rx, 0, SOF_IPC_MSG_MAX_SIZE);
-	ret = sof_ipc_tx_message(sdev->ipc, hdr->cmd, dfse->msg_inject_tx, count,
-				 dfse->msg_inject_rx, SOF_IPC_MSG_MAX_SIZE);
-
-	pm_runtime_mark_last_busy(sdev->dev);
-	err = pm_runtime_put_autosuspend(sdev->dev);
-	if (err < 0)
-		dev_err_ratelimited(sdev->dev, "%s: DSP idle failed: %d\n",
-				    __func__, err);
-
-	/* return size if test is successful */
-	if (ret >= 0)
-		ret = size;
-
-out:
-	return ret;
-}
-
-static const struct file_operations msg_inject_fops = {
-	.open = simple_open,
-	.read = msg_inject_read,
-	.write = msg_inject_write,
-	.llseek = default_llseek,
-};
-
-static int snd_sof_debugfs_msg_inject_item(struct snd_sof_dev *sdev,
-					   const char *name, mode_t mode,
-					   const struct file_operations *fops)
-{
-	struct snd_sof_dfsentry *dfse;
-
-	dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL);
-	if (!dfse)
-		return -ENOMEM;
-
-	/* pre allocate the tx and rx buffers */
-	dfse->msg_inject_tx = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
-	dfse->msg_inject_rx = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
-	if (!dfse->msg_inject_tx || !dfse->msg_inject_rx)
-		return -ENOMEM;
-
-	dfse->type = SOF_DFSENTRY_TYPE_BUF;
-	dfse->sdev = sdev;
-
-	debugfs_create_file(name, mode, sdev->debugfs_root, dfse, fops);
-	/* add to dfsentry list */
-	list_add(&dfse->list, &sdev->dfsentry_list);
-
-	return 0;
-}
-#endif
-
 static ssize_t sof_dfsentry_write(struct file *file, const char __user *buffer,
 				  size_t count, loff_t *ppos)
 {
@@ -679,15 +580,6 @@ int snd_sof_dbg_init(struct snd_sof_dev *sdev)
 		return err;
 #endif
 
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_MSG_INJECTOR)
-	err = snd_sof_debugfs_msg_inject_item(sdev, "ipc_msg_inject", 0644,
-					      &msg_inject_fops);
-
-	/* errors are only due to memory allocation, not debugfs */
-	if (err < 0)
-		return err;
-#endif
-
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_sof_dbg_init);