1 files changed, 57 insertions, 0 deletions
diff --git a/include/sound/wcd-spi.h b/include/sound/wcd-spi.h
new file mode 100644
index 000000000000..1fff58d727a1
--- /dev/null
+++ b/include/sound/wcd-spi.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __WCD_SPI_H__
+#define __WCD_SPI_H__
+
+struct wcd_spi_msg {
+	/*
+	 * Caller's buffer pointer that holds data to
+	 * be transmitted in case of data_write and
+	 * data to be copied to in case of data_read.
+	 */
+	void *data;
+
+	/* Length of data to write/read */
+	size_t len;
+
+	/*
+	 * Address in remote memory to write to
+	 * or read from.
+	 */
+	u32 remote_addr;
+
+	/* Bitmask of flags, currently unused */
+	u32 flags;
+};
+
+#ifdef CONFIG_SND_SOC_WCD_SPI
+
+int wcd_spi_data_write(struct spi_device *spi, struct wcd_spi_msg *msg);
+int wcd_spi_data_read(struct spi_device *spi, struct wcd_spi_msg *msg);
+
+#else
+
+int wcd_spi_data_write(struct spi_device *spi, struct wcd_spi_msg *msg)
+{
+	return -ENODEV;
+}
+
+int wcd_spi_data_read(struct spi_device *spi, struct wcd_spi_msg *msg)
+{
+	return -ENODEV;
+}
+
+#endif /* End of CONFIG_SND_SOC_WCD_SPI */
+
+#endif /* End of __WCD_SPI_H__ */