ASoC: wm0010: Split out the firmware file parsing from the boot

Move the firmware load and record parsing functionality out into
a separate function from the boot function.

Signed-off-by: Scott Ling <sl@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm0010.c

@@ -332,24 +332,165 @@ static void byte_swap_64(u64 *data_in, u64 *data_out, u32 len)
 		data_out[i] = cpu_to_be64(le64_to_cpu(data_in[i]));
 }
 
-static int wm0010_boot(struct snd_soc_codec *codec)
+static int wm0010_firmware_load(char *name, struct snd_soc_codec *codec)
 {
 	struct spi_device *spi = to_spi_device(codec->dev);
 	struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
-	unsigned long flags;
 	struct list_head xfer_list;
 	struct wm0010_boot_xfer *xfer;
 	int ret;
 	struct completion done;
 	const struct firmware *fw;
 	const struct dfw_binrec *rec;
+	u64 *img;
+	u8 *out, dsp;
+	u32 len, offset;
+
+	INIT_LIST_HEAD(&xfer_list);
+
+	ret = request_firmware(&fw, name, codec->dev);
+	if (ret != 0) {
+		dev_err(codec->dev, "Failed to request application: %d\n",
+			ret);
+		return ret;
+	}
+
+	rec = (const struct dfw_binrec *)fw->data;
+	offset = 0;
+	dsp = rec->data[0];
+	wm0010->boot_failed = false;
+	BUG_ON(!list_empty(&xfer_list));
+	init_completion(&done);
+
+	/* First record should be INFO */
+	if (rec->command != DFW_CMD_INFO) {
+		dev_err(codec->dev, "First record not INFO\r\n");
+		ret = -EINVAL;
+		goto abort;
+	}
+
+	/* Check it's a DSP file */
+	if (dsp != DEVICE_ID_WM0010) {
+		dev_err(codec->dev, "Not a WM0010 firmware file.\r\n");
+		ret = -EINVAL;
+		goto abort;
+	}
+
+	/* Skip the info record as we don't need to send it */
+	offset += ((rec->length) + 8);
+	rec = (void *)&rec->data[rec->length];
+
+	while (offset < fw->size) {
+		dev_dbg(codec->dev,
+			"Packet: command %d, data length = 0x%x\r\n",
+			rec->command, rec->length);
+		len = rec->length + 8;
+
+		out = kzalloc(len, GFP_KERNEL);
+		if (!out) {
+			dev_err(codec->dev,
+				"Failed to allocate RX buffer\n");
+			ret = -ENOMEM;
+			goto abort1;
+		}
+
+		img = kzalloc(len, GFP_KERNEL);
+		if (!img) {
+			dev_err(codec->dev,
+				"Failed to allocate image buffer\n");
+			ret = -ENOMEM;
+			goto abort1;
+		}
+
+		byte_swap_64((u64 *)&rec->command, img, len);
+
+		xfer = kzalloc(sizeof(*xfer), GFP_KERNEL);
+		if (!xfer) {
+			dev_err(codec->dev, "Failed to allocate xfer\n");
+			ret = -ENOMEM;
+			goto abort1;
+		}
+
+		xfer->codec = codec;
+		list_add_tail(&xfer->list, &xfer_list);
+
+		spi_message_init(&xfer->m);
+		xfer->m.complete = wm0010_boot_xfer_complete;
+		xfer->m.context = xfer;
+		xfer->t.tx_buf = img;
+		xfer->t.rx_buf = out;
+		xfer->t.len = len;
+		xfer->t.bits_per_word = 8;
+
+		if (!wm0010->pll_running) {
+			xfer->t.speed_hz = wm0010->sysclk / 6;
+		} else {
+			xfer->t.speed_hz = wm0010->max_spi_freq;
+
+			if (wm0010->board_max_spi_speed &&
+			   (wm0010->board_max_spi_speed < wm0010->max_spi_freq))
+					xfer->t.speed_hz = wm0010->board_max_spi_speed;
+		}
+
+		/* Store max usable spi frequency for later use */
+		wm0010->max_spi_freq = xfer->t.speed_hz;
+
+		spi_message_add_tail(&xfer->t, &xfer->m);
+
+		offset += ((rec->length) + 8);
+		rec = (void *)&rec->data[rec->length];
+
+		if (offset >= fw->size) {
+			dev_dbg(codec->dev, "All transfers scheduled\n");
+			xfer->done = &done;
+		}
+
+		ret = spi_async(spi, &xfer->m);
+		if (ret != 0) {
+			dev_err(codec->dev, "Write failed: %d\n", ret);
+			goto abort1;
+		}
+
+		if (wm0010->boot_failed) {
+			dev_dbg(codec->dev, "Boot fail!\n");
+			ret = -EINVAL;
+			goto abort1;
+		}
+	}
+
+	wait_for_completion(&done);
+
+	ret = 0;
+
+abort1:
+	while (!list_empty(&xfer_list)) {
+		xfer = list_first_entry(&xfer_list, struct wm0010_boot_xfer,
+					list);
+		kfree(xfer->t.rx_buf);
+		kfree(xfer->t.tx_buf);
+		list_del(&xfer->list);
+		kfree(xfer);
+	}
+
+abort:
+	release_firmware(fw);
+	return ret;
+}
+
+static int wm0010_boot(struct snd_soc_codec *codec)
+{
+	struct spi_device *spi = to_spi_device(codec->dev);
+	struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
+	unsigned long flags;
+	int ret;
+	const struct firmware *fw;
 	struct spi_message m;
 	struct spi_transfer t;
 	struct dfw_pllrec pll_rec;
 	u32 *img, *p;
 	u64 *img_swap;
 	u8 *out;
-	u32 len, offset;
+	u32 len;
 	int i;
 
 	spin_lock_irqsave(&wm0010->irq_lock, flags);
@@ -363,8 +504,6 @@ static int wm0010_boot(struct snd_soc_codec *codec)
 		goto err;
 	}
 
-	INIT_LIST_HEAD(&xfer_list);
-
 	mutex_lock(&wm0010->lock);
 	wm0010->pll_running = false;
 
@@ -533,109 +672,10 @@ static int wm0010_boot(struct snd_soc_codec *codec)
 	} else
 		dev_dbg(codec->dev, "Not enabling DSP PLL.");
 
-	ret = request_firmware(&fw, "wm0010.dfw", codec->dev);
-	if (ret != 0) {
-		dev_err(codec->dev, "Failed to request application: %d\n",
-			ret);
-		goto abort;
-	}
+	ret = wm0010_firmware_load("wm0010.dfw", codec);
 
-	rec = (const struct dfw_binrec *)fw->data;
-	offset = 0;
-	wm0010->boot_failed = false;
-	BUG_ON(!list_empty(&xfer_list));
-	init_completion(&done);
-
-	/* First record should be INFO */
-	if (rec->command != DFW_CMD_INFO) {
-		dev_err(codec->dev, "First record not INFO\r\n");
-		goto abort;
-	}
-
-	/* Check it's a 0010 file */
-	if (rec->data[0] != DEVICE_ID_WM0010) {
-		dev_err(codec->dev, "Not a WM0010 firmware file.\r\n");
+	if (ret != 0)
 		goto abort;
-	}
-
-	/* Skip the info record as we don't need to send it */
-	offset += ((rec->length) + 8);
-	rec = (void *)&rec->data[rec->length];
-
-	while (offset < fw->size) {
-		dev_dbg(codec->dev,
-			"Packet: command %d, data length = 0x%x\r\n",
-			rec->command, rec->length);
-		len = rec->length + 8;
-
-		out = kzalloc(len, GFP_KERNEL);
-		if (!out) {
-			dev_err(codec->dev,
-				"Failed to allocate RX buffer\n");
-			goto abort;
-		}
-
-		img_swap = kzalloc(len, GFP_KERNEL);
-		if (!img_swap) {
-			dev_err(codec->dev,
-				"Failed to allocate image buffer\n");
-			goto abort;
-		}
-
-		/* We need to re-order for 0010 */
-		byte_swap_64((u64 *)&rec->command, img_swap, len);
-
-		xfer = kzalloc(sizeof(*xfer), GFP_KERNEL);
-		if (!xfer) {
-			dev_err(codec->dev, "Failed to allocate xfer\n");
-			goto abort;
-		}
-
-		xfer->codec = codec;
-		list_add_tail(&xfer->list, &xfer_list);
-
-		spi_message_init(&xfer->m);
-		xfer->m.complete = wm0010_boot_xfer_complete;
-		xfer->m.context = xfer;
-		xfer->t.tx_buf = img_swap;
-		xfer->t.rx_buf = out;
-		xfer->t.len = len;
-		xfer->t.bits_per_word = 8;
-
-		if (!wm0010->pll_running) {
-			xfer->t.speed_hz = wm0010->sysclk / 6;
-		} else {
-			xfer->t.speed_hz = wm0010->max_spi_freq;
-
-			if (wm0010->board_max_spi_speed &&
-			   (wm0010->board_max_spi_speed < wm0010->max_spi_freq))
-					xfer->t.speed_hz = wm0010->board_max_spi_speed;
-		}
-
-		/* Store max usable spi frequency for later use */
-		wm0010->max_spi_freq = xfer->t.speed_hz;
-
-		spi_message_add_tail(&xfer->t, &xfer->m);
-
-		offset += ((rec->length) + 8);
-		rec = (void *)&rec->data[rec->length];
-
-		if (offset >= fw->size) {
-			dev_dbg(codec->dev, "All transfers scheduled\n");
-			xfer->done = &done;
-		}
-
-		ret = spi_async(spi, &xfer->m);
-		if (ret != 0) {
-			dev_err(codec->dev, "Write failed: %d\n", ret);
-			goto abort;
-		}
-
-		if (wm0010->boot_failed)
-			goto abort;
-	}
-
-	wait_for_completion(&done);
 
 	spin_lock_irqsave(&wm0010->irq_lock, flags);
 	wm0010->state = WM0010_FIRMWARE;
@@ -643,17 +683,6 @@ static int wm0010_boot(struct snd_soc_codec *codec)
 
 	mutex_unlock(&wm0010->lock);
 
-	release_firmware(fw);
-
-	while (!list_empty(&xfer_list)) {
-		xfer = list_first_entry(&xfer_list, struct wm0010_boot_xfer,
-					list);
-		kfree(xfer->t.rx_buf);
-		kfree(xfer->t.tx_buf);
-		list_del(&xfer->list);
-		kfree(xfer);
-	}
-
 	return 0;
 
 abort: