ASoC: tas2552: Support TI TAS2552 Amplifier

Support the TI TAS2552 Class D amplifier.

The TAS2552 is a high efficiency Class-D audio
power amplifier with advanced battery current
management and an integrated Class-G boost
The device constantly measures the
current and voltage across the load and provides a
digital stream of this information.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 129 insertions, 0 deletions

diff --git a/sound/soc/codecs/tas2552.h b/sound/soc/codecs/tas2552.h
new file mode 100644
index 000000000000..6cea8f31bf88
--- /dev/null
+++ b/sound/soc/codecs/tas2552.h
@@ -0,0 +1,129 @@
+/*
+ * tas2552.h - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated -  http://www.ti.com
+ *
+ * Author: Dan Murphy <dmurphy@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.
+ */
+
+#ifndef __TAS2552_H__
+#define __TAS2552_H__
+
+/* Register Address Map */
+#define TAS2552_DEVICE_STATUS	0x00
+#define TAS2552_CFG_1			0x01
+#define TAS2552_CFG_2			0x02
+#define TAS2552_CFG_3			0x03
+#define TAS2552_DOUT			0x04
+#define TAS2552_SER_CTRL_1		0x05
+#define TAS2552_SER_CTRL_2		0x06
+#define TAS2552_OUTPUT_DATA		0x07
+#define TAS2552_PLL_CTRL_1		0x08
+#define TAS2552_PLL_CTRL_2		0x09
+#define TAS2552_PLL_CTRL_3		0x0a
+#define TAS2552_BTIP			0x0b
+#define TAS2552_BTS_CTRL		0x0c
+#define TAS2552_RESERVED_0D		0x0d
+#define TAS2552_LIMIT_RATE_HYS	0x0e
+#define TAS2552_LIMIT_RELEASE	0x0f
+#define TAS2552_LIMIT_INT_COUNT	0x10
+#define TAS2552_PDM_CFG			0x11
+#define TAS2552_PGA_GAIN		0x12
+#define TAS2552_EDGE_RATE_CTRL	0x13
+#define TAS2552_BOOST_PT_CTRL	0x14
+#define TAS2552_VER_NUM			0x16
+#define TAS2552_VBAT_DATA		0x19
+#define TAS2552_MAX_REG			0x20
+
+/* CFG1 Register Masks */
+#define TAS2552_MUTE_MASK		(1 << 2)
+#define TAS2552_SWS_MASK		(1 << 1)
+#define TAS2552_WCLK_MASK		0x07
+#define TAS2552_CLASSD_EN_MASK	(1 << 7)
+
+/* CFG2 Register Masks */
+#define TAS2552_CLASSD_EN		(1 << 7)
+#define TAS2552_BOOST_EN		(1 << 6)
+#define TAS2552_APT_EN			(1 << 5)
+#define TAS2552_PLL_ENABLE		(1 << 3)
+#define TAS2552_LIM_EN			(1 << 2)
+#define TAS2552_IVSENSE_EN		(1 << 1)
+
+/* CFG3 Register Masks */
+#define TAS2552_WORD_CLK_MASK		(1 << 7)
+#define TAS2552_BIT_CLK_MASK		(1 << 6)
+#define TAS2552_DATA_FORMAT_MASK	(0x11 << 2)
+
+#define TAS2552_DAIFMT_I2S_MASK		0xf3
+#define TAS2552_DAIFMT_DSP			(1 << 3)
+#define TAS2552_DAIFMT_RIGHT_J		(1 << 4)
+#define TAS2552_DAIFMT_LEFT_J		(0x11 << 3)
+
+#define TAS2552_PLL_SRC_MCLK	0x00
+#define TAS2552_PLL_SRC_BCLK	(1 << 3)
+#define TAS2552_PLL_SRC_IVCLKIN	(1 << 4)
+#define TAS2552_PLL_SRC_1_8_FIXED (0x11 << 3)
+
+#define TAS2552_DIN_SRC_SEL_MUTED	0x00
+#define TAS2552_DIN_SRC_SEL_LEFT	(1 << 4)
+#define TAS2552_DIN_SRC_SEL_RIGHT	(1 << 5)
+#define TAS2552_DIN_SRC_SEL_AVG_L_R	(0x11 << 4)
+
+#define TAS2552_PDM_IN_SEL		(1 << 5)
+#define TAS2552_I2S_OUT_SEL		(1 << 6)
+#define TAS2552_ANALOG_IN_SEL	(1 << 7)
+
+/* CFG3 WCLK Dividers */
+#define TAS2552_8KHZ		0x00
+#define TAS2552_11_12KHZ	(1 << 1)
+#define TAS2552_16KHZ		(1 << 2)
+#define TAS2552_22_24KHZ	(1 << 3)
+#define TAS2552_32KHZ		(1 << 4)
+#define TAS2552_44_48KHZ	(1 << 5)
+#define TAS2552_88_96KHZ	(1 << 6)
+#define TAS2552_176_192KHZ	(1 << 7)
+
+/* OUTPUT_DATA register */
+#define TAS2552_PDM_DATA_I		0x00
+#define TAS2552_PDM_DATA_V		(1 << 6)
+#define TAS2552_PDM_DATA_I_V	(1 << 7)
+#define TAS2552_PDM_DATA_V_I	(0x11 << 6)
+
+/* PDM CFG Register */
+#define TAS2552_PDM_DATA_ES_RISE 0x4
+
+#define TAS2552_PDM_PLL_CLK_SEL 0x00
+#define TAS2552_PDM_IV_CLK_SEL	(1 << 1)
+#define TAS2552_PDM_BCLK_SEL	(1 << 2)
+#define TAS2552_PDM_MCLK_SEL	(1 << 3)
+
+/* Boost pass-through register */
+#define TAS2552_APT_DELAY_50	0x00
+#define TAS2552_APT_DELAY_75	(1 << 1)
+#define TAS2552_APT_DELAY_125	(1 << 2)
+#define TAS2552_APT_DELAY_200	(1 << 3)
+
+#define TAS2552_APT_THRESH_2_5		0x00
+#define TAS2552_APT_THRESH_1_7		(1 << 3)
+#define TAS2552_APT_THRESH_1_4_1_1	(1 << 4)
+#define TAS2552_APT_THRESH_2_1_7	(0x11 << 2)
+
+/* PLL Control Register */
+#define TAS2552_245MHZ_CLK			24576000
+#define TAS2552_225MHZ_CLK			22579200
+#define TAS2552_PLL_J_MASK			0x7f
+#define TAS2552_PLL_D_UPPER_MASK	0x3f
+#define TAS2552_PLL_D_LOWER_MASK	0xff
+#define TAS2552_PLL_BYPASS_MASK		0x80
+#define TAS2552_PLL_BYPASS			0x80
+
+#endif