ALSA SoC: Texas Instruments TAS2781 Audio Smart Amp

The TAS2781 driver implements a flexible and configurable register setting for one, two, even multiple TAS2781 chips. All the register setting are in a bin file. Almost no specific register setting can be found in the code.

Signed-off-by Kevin Lu <[email protected]>

---
 sound/soc/codecs/Kconfig       |   13 +
 sound/soc/codecs/Makefile      |    2 +
 sound/soc/codecs/tas2781-dsp.c | 2483 ++++++++++++++++++++++++++++++++
 sound/soc/codecs/tas2781-dsp.h |  213 +++
 sound/soc/codecs/tas2781-i2c.c | 2143 +++++++++++++++++++++++++++
 sound/soc/codecs/tas2781.h     |  208 +++
 6 files changed, 5062 insertions(+)
 create mode 100644 sound/soc/codecs/tas2781-dsp.c
 create mode 100644 sound/soc/codecs/tas2781-dsp.h
 create mode 100644 sound/soc/codecs/tas2781-i2c.c
 create mode 100644 sound/soc/codecs/tas2781.h

sound/soc/codecs/Kconfig +1 -0

index 7022e6286..31d2d9594 100644
@@ -222,6 +222,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_TAS2764
 	imply SND_SOC_TAS2770
 	imply SND_SOC_TAS2780
+	imply SND_SOC_TAS2781
 	imply SND_SOC_TAS5086
 	imply SND_SOC_TAS571X
 	imply SND_SOC_TAS5720

@@ -1573,6 +1574,18 @@ config SND_SOC_TAS2780
 	  Enable support for Texas Instruments TAS2780 high-efficiency
 	  digital input mono Class-D audio power amplifiers.
 

sound/soc/codecs/Kconfig +18 -0

+static struct i2c_driver tasdevice_i2c_driver = {
+	.driver = {
+		.name = "tas2781-codec",
+		.owner = THIS_MODULE,
+		.of_match_table = of_match_ptr(tasdevice_of_match),
+		.pm = &tasdevice_pm_ops,
+	},
+	.probe	= tasdevice_i2c_probe,
+	.remove = tasdevice_i2c_remove,
+	.id_table = tasdevice_id,
+};
+
+module_i2c_driver(tasdevice_i2c_driver);
+
+MODULE_AUTHOR("Shenghao Ding <[email protected]>");
+MODULE_AUTHOR("Kevin Lu <[email protected]>");
+MODULE_DESCRIPTION("ASoC TAS2781 Driver");
+MODULE_LICENSE("GPL");

sound/soc/codecs/tas2781.h new file +11 -0

new file mode 100644
index 000000000..db4ec752b
@@ -0,0 +1,208 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * ALSA SoC Texas Instruments TAS2781 Audio Smart Amplifier
+ *
+ * Copyright (C) 2022 - 2023 Texas Instruments Incorporated
+ * https://www.ti.com
+ *
+ * The TAS2781 driver implements a flexible and configurable register setting
+ * for one, two, even multiple TAS2781 chips. All the register setting are in
+ * a bin file. Almost no specific register setting can be found in the code.
+ *

sound/soc/codecs/tas2781.h new file +4 -0

+
+#define TASDEVICE_RETRY_COUNT	(3)
+#define TASDEVICE_ERROR_FAILED	(-2)
+

sound/soc/codecs/tas2781.h new file +126 -0

+#define TAS2871_MISC_CFG2  TASDEVICE_REG(0x0, 0X0, 0x07)
+#define TAS2871_GLOBAL_MASK (0x1 << 1)
+
+#define SMS_HTONS(a, b)  ((((a)&0x00FF)<<8) | \
+				((b)&0x00FF))
+#define SMS_HTONL(a, b, c, d) ((((a)&0x000000FF)<<24) |\
+					(((b)&0x000000FF)<<16) | \
+					(((c)&0x000000FF)<<8) | \
+					((d)&0x000000FF))
+
+	/*I2C Checksum */
+#define TASDEVICE_I2CChecksum  TASDEVICE_REG(0x0, 0x0, 0x7E)
+
+	/* Volume control */
+#define TAS2781_DVC_LVL TASDEVICE_REG(0x0, 0x0, 0x1A)
+#define TAS2781_AMP_LEVEL TASDEVICE_REG(0x0, 0x0, 0x03)
+#define TAS2781_AMP_LEVEL_MASK GENMASK(5, 1)
+
+#define TASDEVICE_CMD_SING_W  (0x1)
+#define TASDEVICE_CMD_BURST  (0x2)
+#define TASDEVICE_CMD_DELAY  (0x3)
+#define TASDEVICE_CMD_FIELD_W  (0x4)
+
+enum audio_device {
+	GENERAL_AUDEV = 0,
+	TAS2781	  = 1,
+};
+
+struct smartpa_gpio_info {
+	unsigned char ndev;
+	int mnResetGpio[MaxChn];
+};
+
+#define SMS_HTONS(a, b)  ((((a)&0x00FF)<<8) | ((b)&0x00FF))
+#define SMS_HTONL(a, b, c, d) ((((a)&0x000000FF)<<24) | \
+	(((b)&0x000000FF)<<16) | (((c)&0x000000FF)<<8) | \
+	((d)&0x000000FF))
+
+struct Tbookpage {
+	unsigned char mnBook;
+	unsigned char mnPage;
+};
+
+struct Ttasdevice {
+	unsigned int mnDevAddr;
+	unsigned int mnErrCode;
+	short mnCurrentProgram;
+	short mnCurrentConfiguration;
+	short mnCurrentRegConf;
+	int mnIRQGPIO;
+	int mnResetGpio;
+	int mn_irq;
+	int PowerStatus;
+	bool bDSPBypass;
+	bool bIrq_enabled;
+	bool bLoading;
+	bool bLoaderr;
+	bool mbCalibrationLoaded;
+	struct Tbookpage mnBkPg;
+	struct TFirmware *mpCalFirmware;
+};
+
+struct global_addr {
+	struct Tbookpage mnBkPg;
+	unsigned int mnDevAddr;
+	int ref_cnt;
+};
+
+struct tas_control {
+	struct snd_kcontrol_new *tasdevice_profile_controls;
+	int nr_controls;
+};
+
+struct tasdevice_irqinfo {
+	int mn_irq_gpio;
+	int mn_irq;
+	struct delayed_work irq_work;
+	bool mb_irq_enable;
+};
+
+struct tasdevice_priv {
+	struct device *dev;
+	void *client;
+	struct regmap *regmap;
+	struct mutex codec_lock;
+	struct mutex dev_lock;
+	struct Ttasdevice tasdevice[MaxChn];
+	struct TFirmware *mpFirmware;
+	struct tasdevice_regbin mtRegbin;
+	struct smartpa_gpio_info mtRstGPIOs;
+	struct tasdevice_irqinfo mIrqInfo;
+	struct tas_control tas_ctrl;
+	struct global_addr glb_addr;
+	int mnCurrentProgram;
+	int mnCurrentConfiguration;
+	unsigned int chip_id;
+	int (*read)(struct tasdevice_priv *tas_dev, enum channel chn,
+		unsigned int reg, unsigned int *pValue);
+	int (*write)(struct tasdevice_priv *tas_dev, enum channel chn,
+		unsigned int reg, unsigned int Value);
+	int (*bulk_read)(struct tasdevice_priv *tas_dev, enum channel chn,
+		unsigned int reg, unsigned char *pData, unsigned int len);
+	int (*bulk_write)(struct tasdevice_priv *tas_dev, enum channel chn,
+		unsigned int reg, unsigned char *pData, unsigned int len);
+	int (*set_calibration)(void *tas_dev, enum channel chl,
+		int calibration);
+	void (*tas2781_reset)(struct tasdevice_priv *tas_dev);
+	void (*tas2781_set_global)(struct tasdevice_priv *tas_dev);
+	int (*fw_parse_variable_header)(struct tasdevice_priv *tas_dev,
+		const struct firmware *pFW, int offset);
+	int (*fw_parse_program_data)(struct tasdevice_priv *tas_dev,
+		struct TFirmware *pFirmware,
+		const struct firmware *pFW, int offset);
+	int (*fw_parse_configuration_data)(struct tasdevice_priv *tas_dev,
+		struct TFirmware *pFirmware,
+		const struct firmware *pFW, int offset);
+	int (*tasdevice_load_block)(struct tasdevice_priv *tas_dev,
+		struct TBlock *pBlock);
+	int (*fw_parse_calibration_data)(struct tasdevice_priv *tas_dev,
+		struct TFirmware *pFirmware,
+		const struct firmware *pFW, int offset);
+	void (*irq_work_func)(struct tasdevice_priv *tas_dev);
+	int fw_state;
+	unsigned int magic_num;
+	unsigned char ndev;
+	unsigned char dev_name[32];