MFD: DaVinci Voice Codec

This is the MFD driver for the DaVinci Voice codec, it has two clients:

* Voice codec interface
* Voice codec CQ93VC

Signed-off-by: Miguel Aguilar <miguel.aguilar@ridgerun.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

include/linux/mfd/davinci_voicecodec.h

@@ -0,0 +1,126 @@
+/*
+ * DaVinci Voice Codec Core Interface for TI platforms
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc
+ *
+ * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __LINUX_MFD_DAVINCI_VOICECODEC_H_
+#define __LINUX_MFD_DAVINIC_VOICECODEC_H_
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/core.h>
+
+#include <mach/edma.h>
+
+/*
+ * Register values.
+ */
+#define DAVINCI_VC_PID			0x00
+#define DAVINCI_VC_CTRL			0x04
+#define DAVINCI_VC_INTEN		0x08
+#define DAVINCI_VC_INTSTATUS		0x0c
+#define DAVINCI_VC_INTCLR		0x10
+#define DAVINCI_VC_EMUL_CTRL		0x14
+#define DAVINCI_VC_RFIFO		0x20
+#define DAVINCI_VC_WFIFO		0x24
+#define DAVINCI_VC_FIFOSTAT		0x28
+#define DAVINCI_VC_TST_CTRL		0x2C
+#define DAVINCI_VC_REG05		0x94
+#define DAVINCI_VC_REG09		0xA4
+#define DAVINCI_VC_REG12		0xB0
+
+/* DAVINCI_VC_CTRL bit fields */
+#define DAVINCI_VC_CTRL_MASK		0x5500
+#define DAVINCI_VC_CTRL_RSTADC		BIT(0)
+#define DAVINCI_VC_CTRL_RSTDAC		BIT(1)
+#define DAVINCI_VC_CTRL_RD_BITS_8	BIT(4)
+#define DAVINCI_VC_CTRL_RD_UNSIGNED	BIT(5)
+#define DAVINCI_VC_CTRL_WD_BITS_8	BIT(6)
+#define DAVINCI_VC_CTRL_WD_UNSIGNED	BIT(7)
+#define DAVINCI_VC_CTRL_RFIFOEN		BIT(8)
+#define DAVINCI_VC_CTRL_RFIFOCL		BIT(9)
+#define DAVINCI_VC_CTRL_RFIFOMD_WORD_1	BIT(10)
+#define DAVINCI_VC_CTRL_WFIFOEN		BIT(12)
+#define DAVINCI_VC_CTRL_WFIFOCL		BIT(13)
+#define DAVINCI_VC_CTRL_WFIFOMD_WORD_1	BIT(14)
+
+/* DAVINCI_VC_INT bit fields */
+#define DAVINCI_VC_INT_MASK		0x3F
+#define DAVINCI_VC_INT_RDRDY_MASK	BIT(0)
+#define DAVINCI_VC_INT_RERROVF_MASK	BIT(1)
+#define DAVINCI_VC_INT_RERRUDR_MASK	BIT(2)
+#define DAVINCI_VC_INT_WDREQ_MASK	BIT(3)
+#define DAVINCI_VC_INT_WERROVF_MASKBIT	BIT(4)
+#define DAVINCI_VC_INT_WERRUDR_MASK	BIT(5)
+
+/* DAVINCI_VC_REG05 bit fields */
+#define DAVINCI_VC_REG05_PGA_GAIN	0x07
+
+/* DAVINCI_VC_REG09 bit fields */
+#define DAVINCI_VC_REG09_MUTE		0x40
+#define DAVINCI_VC_REG09_DIG_ATTEN	0x3F
+
+/* DAVINCI_VC_REG12 bit fields */
+#define DAVINCI_VC_REG12_POWER_ALL_ON	0xFD
+#define DAVINCI_VC_REG12_POWER_ALL_OFF	0x00
+
+#define DAVINCI_VC_CELLS		2
+
+enum davinci_vc_cells {
+	DAVINCI_VC_VCIF_CELL,
+	DAVINCI_VC_CQ93VC_CELL,
+};
+
+struct davinci_vcif {
+	struct platform_device	*pdev;
+	u32 dma_tx_channel;
+	u32 dma_rx_channel;
+	dma_addr_t dma_tx_addr;
+	dma_addr_t dma_rx_addr;
+};
+
+struct cq93vc {
+	struct platform_device *pdev;
+	struct snd_soc_codec *codec;
+	u32 sysclk;
+};
+
+struct davinci_vc;
+
+struct davinci_vc {
+	/* Device data */
+	struct device *dev;
+	struct platform_device *pdev;
+	struct clk *clk;
+
+	/* Memory resources */
+	void __iomem *base;
+	resource_size_t pbase;
+	size_t base_size;
+
+	/* MFD cells */
+	struct mfd_cell cells[DAVINCI_VC_CELLS];
+
+	/* Client devices */
+	struct davinci_vcif davinci_vcif;
+	struct cq93vc cq93vc;
+};
+
+#endif