ASoC: omap-mcpdm: Replace legacy driver
Reasons for the replacement:
The current driver for McPDM was developed to support the legacy mode only.
In preparation for the ABE support the current driver stack need the be
replaced.
The new driver is much simpler, easier to extend, and it also fixes some of the
issues with the old stack.
Main changes:
- single file for omap-mcpdm (mcpdm.c/h removed)
- Define names for registers, bits cleaned up, prefixed
- Full-duplex audio operation (arecord | aplay) has been fixed
- Less code
McPDM need to be turned off after all streams has been stopped.
This might cause pop noise on the output, if the codec's DAC is
still powered at this time.
Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Sebastien Guiriec <s-guiriec@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/omap/omap-mcpdm.h b/sound/soc/omap/omap-mcpdm.h
new file mode 100644
index 0000000..d23122a
--- /dev/null
+++ b/sound/soc/omap/omap-mcpdm.h
@@ -0,0 +1,95 @@
+/*
+ * omap-mcpdm.h
+ *
+ * Copyright (C) 2009 - 2011 Texas Instruments
+ *
+ * Contact: Misael Lopez Cruz <misael.lopez@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __OMAP_MCPDM_H__
+#define __OMAP_MCPDM_H__
+
+#define MCPDM_REG_REVISION 0x00
+#define MCPDM_REG_SYSCONFIG 0x10
+#define MCPDM_REG_IRQSTATUS_RAW 0x24
+#define MCPDM_REG_IRQSTATUS 0x28
+#define MCPDM_REG_IRQENABLE_SET 0x2C
+#define MCPDM_REG_IRQENABLE_CLR 0x30
+#define MCPDM_REG_IRQWAKE_EN 0x34
+#define MCPDM_REG_DMAENABLE_SET 0x38
+#define MCPDM_REG_DMAENABLE_CLR 0x3C
+#define MCPDM_REG_DMAWAKEEN 0x40
+#define MCPDM_REG_CTRL 0x44
+#define MCPDM_REG_DN_DATA 0x48
+#define MCPDM_REG_UP_DATA 0x4C
+#define MCPDM_REG_FIFO_CTRL_DN 0x50
+#define MCPDM_REG_FIFO_CTRL_UP 0x54
+#define MCPDM_REG_DN_OFFSET 0x58
+
+/*
+ * MCPDM_IRQ bit fields
+ * IRQSTATUS_RAW, IRQSTATUS, IRQENABLE_SET, IRQENABLE_CLR
+ */
+
+#define MCPDM_DN_IRQ (1 << 0)
+#define MCPDM_DN_IRQ_EMPTY (1 << 1)
+#define MCPDM_DN_IRQ_ALMST_EMPTY (1 << 2)
+#define MCPDM_DN_IRQ_FULL (1 << 3)
+
+#define MCPDM_UP_IRQ (1 << 8)
+#define MCPDM_UP_IRQ_EMPTY (1 << 9)
+#define MCPDM_UP_IRQ_ALMST_FULL (1 << 10)
+#define MCPDM_UP_IRQ_FULL (1 << 11)
+
+#define MCPDM_DOWNLINK_IRQ_MASK 0x00F
+#define MCPDM_UPLINK_IRQ_MASK 0xF00
+
+/*
+ * MCPDM_DMAENABLE bit fields
+ */
+
+#define MCPDM_DMA_DN_ENABLE (1 << 0)
+#define MCPDM_DMA_UP_ENABLE (1 << 1)
+
+/*
+ * MCPDM_CTRL bit fields
+ */
+
+#define MCPDM_PDM_UPLINK_EN(x) (1 << (x - 1)) /* ch1 is at bit 0 */
+#define MCPDM_PDM_DOWNLINK_EN(x) (1 << (x + 2)) /* ch1 is at bit 3 */
+#define MCPDM_PDMOUTFORMAT (1 << 8)
+#define MCPDM_CMD_INT (1 << 9)
+#define MCPDM_STATUS_INT (1 << 10)
+#define MCPDM_SW_UP_RST (1 << 11)
+#define MCPDM_SW_DN_RST (1 << 12)
+#define MCPDM_WD_EN (1 << 14)
+#define MCPDM_PDM_UP_MASK 0x7
+#define MCPDM_PDM_DN_MASK (0x1f << 3)
+
+
+#define MCPDM_PDMOUTFORMAT_LJUST (0 << 8)
+#define MCPDM_PDMOUTFORMAT_RJUST (1 << 8)
+
+/*
+ * MCPDM_FIFO_CTRL bit fields
+ */
+
+#define MCPDM_UP_THRES_MAX 0xF
+#define MCPDM_DN_THRES_MAX 0xF
+
+#endif /* End of __OMAP_MCPDM_H__ */