drivers/mfd/wm97xx-core.c - kernel/msm-4.19 - Gitiles

 /*
  * Wolfson WM97xx -- Core device
  *
  * Copyright (C) 2017 Robert Jarzmik
  *
  * 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.
  *
  * Features:
  *  - an AC97 audio codec
  *  - a touchscreen driver
  *  - a GPIO block
  */

 #include <linux/device.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/wm97xx.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 #include <linux/wm97xx.h>
 #include <sound/ac97/codec.h>
 #include <sound/ac97/compat.h>

 #define WM9705_VENDOR_ID 0x574d4c05
 #define WM9712_VENDOR_ID 0x574d4c12
 #define WM9713_VENDOR_ID 0x574d4c13
 #define WM97xx_VENDOR_ID_MASK 0xffffffff

 struct wm97xx_priv {
 	struct regmap *regmap;
 	struct snd_ac97 *ac97;
 	struct device *dev;
 	struct wm97xx_platform_data codec_pdata;
 };

 static bool wm97xx_readable_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case AC97_RESET ... AC97_PCM_SURR_DAC_RATE:
 	case AC97_PCM_LR_ADC_RATE:
 	case AC97_CENTER_LFE_MASTER:
 	case AC97_SPDIF ... AC97_LINE1_LEVEL:
 	case AC97_GPIO_CFG ... 0x5c:
 	case AC97_CODEC_CLASS_REV ... AC97_PCI_SID:
 	case 0x74 ... AC97_VENDOR_ID2:
 		return true;
 	default:
 		return false;
 	}
 }

 static bool wm97xx_writeable_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case AC97_VENDOR_ID1:
 	case AC97_VENDOR_ID2:
 		return false;
 	default:
 		return wm97xx_readable_reg(dev, reg);
 	}
 }

 static const struct reg_default wm9705_reg_defaults[] = {
 	{ 0x02, 0x8000 },
 	{ 0x04, 0x8000 },
 	{ 0x06, 0x8000 },
 	{ 0x0a, 0x8000 },
 	{ 0x0c, 0x8008 },
 	{ 0x0e, 0x8008 },
 	{ 0x10, 0x8808 },
 	{ 0x12, 0x8808 },
 	{ 0x14, 0x8808 },
 	{ 0x16, 0x8808 },
 	{ 0x18, 0x8808 },
 	{ 0x1a, 0x0000 },
 	{ 0x1c, 0x8000 },
 	{ 0x20, 0x0000 },
 	{ 0x22, 0x0000 },
 	{ 0x26, 0x000f },
 	{ 0x28, 0x0605 },
 	{ 0x2a, 0x0000 },
 	{ 0x2c, 0xbb80 },
 	{ 0x32, 0xbb80 },
 	{ 0x34, 0x2000 },
 	{ 0x5a, 0x0000 },
 	{ 0x5c, 0x0000 },
 	{ 0x72, 0x0808 },
 	{ 0x74, 0x0000 },
 	{ 0x76, 0x0006 },
 	{ 0x78, 0x0000 },
 	{ 0x7a, 0x0000 },
 };

 static const struct regmap_config wm9705_regmap_config = {
 	.reg_bits = 16,
 	.reg_stride = 2,
 	.val_bits = 16,
 	.max_register = 0x7e,
 	.cache_type = REGCACHE_RBTREE,

 	.reg_defaults = wm9705_reg_defaults,
 	.num_reg_defaults = ARRAY_SIZE(wm9705_reg_defaults),
 	.volatile_reg = regmap_ac97_default_volatile,
 	.readable_reg = wm97xx_readable_reg,
 	.writeable_reg = wm97xx_writeable_reg,
 };

 static struct mfd_cell wm9705_cells[] = {
 	{ .name = "wm9705-codec", },
 	{ .name = "wm97xx-ts", },
 };

 static bool wm9712_volatile_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case AC97_REC_GAIN:
 		return true;
 	default:
 		return regmap_ac97_default_volatile(dev, reg);
 	}
 }

 static const struct reg_default wm9712_reg_defaults[] = {
 	{ 0x02, 0x8000 },
 	{ 0x04, 0x8000 },
 	{ 0x06, 0x8000 },
 	{ 0x08, 0x0f0f },
 	{ 0x0a, 0xaaa0 },
 	{ 0x0c, 0xc008 },
 	{ 0x0e, 0x6808 },
 	{ 0x10, 0xe808 },
 	{ 0x12, 0xaaa0 },
 	{ 0x14, 0xad00 },
 	{ 0x16, 0x8000 },
 	{ 0x18, 0xe808 },
 	{ 0x1a, 0x3000 },
 	{ 0x1c, 0x8000 },
 	{ 0x20, 0x0000 },
 	{ 0x22, 0x0000 },
 	{ 0x26, 0x000f },
 	{ 0x28, 0x0605 },
 	{ 0x2a, 0x0410 },
 	{ 0x2c, 0xbb80 },
 	{ 0x2e, 0xbb80 },
 	{ 0x32, 0xbb80 },
 	{ 0x34, 0x2000 },
 	{ 0x4c, 0xf83e },
 	{ 0x4e, 0xffff },
 	{ 0x50, 0x0000 },
 	{ 0x52, 0x0000 },
 	{ 0x56, 0xf83e },
 	{ 0x58, 0x0008 },
 	{ 0x5c, 0x0000 },
 	{ 0x60, 0xb032 },
 	{ 0x62, 0x3e00 },
 	{ 0x64, 0x0000 },
 	{ 0x76, 0x0006 },
 	{ 0x78, 0x0001 },
 	{ 0x7a, 0x0000 },
 };

 static const struct regmap_config wm9712_regmap_config = {
 	.reg_bits = 16,
 	.reg_stride = 2,
 	.val_bits = 16,
 	.max_register = 0x7e,
 	.cache_type = REGCACHE_RBTREE,

 	.reg_defaults = wm9712_reg_defaults,
 	.num_reg_defaults = ARRAY_SIZE(wm9712_reg_defaults),
 	.volatile_reg = wm9712_volatile_reg,
 	.readable_reg = wm97xx_readable_reg,
 	.writeable_reg = wm97xx_writeable_reg,
 };

 static struct mfd_cell wm9712_cells[] = {
 	{ .name = "wm9712-codec", },
 	{ .name = "wm97xx-ts", },
 };

 static const struct reg_default wm9713_reg_defaults[] = {
 	{ 0x02, 0x8080 },	/* Speaker Output Volume */
 	{ 0x04, 0x8080 },	/* Headphone Output Volume */
 	{ 0x06, 0x8080 },	/* Out3/OUT4 Volume */
 	{ 0x08, 0xc880 },	/* Mono Volume */
 	{ 0x0a, 0xe808 },	/* LINEIN Volume */
 	{ 0x0c, 0xe808 },	/* DAC PGA Volume */
 	{ 0x0e, 0x0808 },	/* MIC PGA Volume */
 	{ 0x10, 0x00da },	/* MIC Routing Control */
 	{ 0x12, 0x8000 },	/* Record PGA Volume */
 	{ 0x14, 0xd600 },	/* Record Routing */
 	{ 0x16, 0xaaa0 },	/* PCBEEP Volume */
 	{ 0x18, 0xaaa0 },	/* VxDAC Volume */
 	{ 0x1a, 0xaaa0 },	/* AUXDAC Volume */
 	{ 0x1c, 0x0000 },	/* Output PGA Mux */
 	{ 0x1e, 0x0000 },	/* DAC 3D control */
 	{ 0x20, 0x0f0f },	/* DAC Tone Control*/
 	{ 0x22, 0x0040 },	/* MIC Input Select & Bias */
 	{ 0x24, 0x0000 },	/* Output Volume Mapping & Jack */
 	{ 0x26, 0x7f00 },	/* Powerdown Ctrl/Stat*/
 	{ 0x28, 0x0405 },	/* Extended Audio ID */
 	{ 0x2a, 0x0410 },	/* Extended Audio Start/Ctrl */
 	{ 0x2c, 0xbb80 },	/* Audio DACs Sample Rate */
 	{ 0x2e, 0xbb80 },	/* AUXDAC Sample Rate */
 	{ 0x32, 0xbb80 },	/* Audio ADCs Sample Rate */
 	{ 0x36, 0x4523 },	/* PCM codec control */
 	{ 0x3a, 0x2000 },	/* SPDIF control */
 	{ 0x3c, 0xfdff },	/* Powerdown 1 */
 	{ 0x3e, 0xffff },	/* Powerdown 2 */
 	{ 0x40, 0x0000 },	/* General Purpose */
 	{ 0x42, 0x0000 },	/* Fast Power-Up Control */
 	{ 0x44, 0x0080 },	/* MCLK/PLL Control */
 	{ 0x46, 0x0000 },	/* MCLK/PLL Control */

 	{ 0x4c, 0xfffe },	/* GPIO Pin Configuration */
 	{ 0x4e, 0xffff },	/* GPIO Pin Polarity / Type */
 	{ 0x50, 0x0000 },	/* GPIO Pin Sticky */
 	{ 0x52, 0x0000 },	/* GPIO Pin Wake-Up */
 				/* GPIO Pin Status */
 	{ 0x56, 0xfffe },	/* GPIO Pin Sharing */
 	{ 0x58, 0x4000 },	/* GPIO PullUp/PullDown */
 	{ 0x5a, 0x0000 },	/* Additional Functions 1 */
 	{ 0x5c, 0x0000 },	/* Additional Functions 2 */
 	{ 0x60, 0xb032 },	/* ALC Control */
 	{ 0x62, 0x3e00 },	/* ALC / Noise Gate Control */
 	{ 0x64, 0x0000 },	/* AUXDAC input control */
 	{ 0x74, 0x0000 },	/* Digitiser Reg 1 */
 	{ 0x76, 0x0006 },	/* Digitiser Reg 2 */
 	{ 0x78, 0x0001 },	/* Digitiser Reg 3 */
 	{ 0x7a, 0x0000 },	/* Digitiser Read Back */
 };

 static const struct regmap_config wm9713_regmap_config = {
 	.reg_bits = 16,
 	.reg_stride = 2,
 	.val_bits = 16,
 	.max_register = 0x7e,
 	.cache_type = REGCACHE_RBTREE,

 	.reg_defaults = wm9713_reg_defaults,
 	.num_reg_defaults = ARRAY_SIZE(wm9713_reg_defaults),
 	.volatile_reg = regmap_ac97_default_volatile,
 	.readable_reg = wm97xx_readable_reg,
 	.writeable_reg = wm97xx_writeable_reg,
 };

 static struct mfd_cell wm9713_cells[] = {
 	{ .name = "wm9713-codec", },
 	{ .name = "wm97xx-ts", },
 };

 static int wm97xx_ac97_probe(struct ac97_codec_device *adev)
 {
 	struct wm97xx_priv *wm97xx;
 	const struct regmap_config *config;
 	struct wm97xx_platform_data *codec_pdata;
 	struct mfd_cell *cells;
 	int ret = -ENODEV, nb_cells, i;
 	struct wm97xx_pdata *pdata = snd_ac97_codec_get_platdata(adev);

 	wm97xx = devm_kzalloc(ac97_codec_dev2dev(adev),
 			      sizeof(*wm97xx), GFP_KERNEL);
 	if (!wm97xx)
 		return -ENOMEM;

 	wm97xx->dev = ac97_codec_dev2dev(adev);
 	wm97xx->ac97 = snd_ac97_compat_alloc(adev);
 	if (IS_ERR(wm97xx->ac97))
 		return PTR_ERR(wm97xx->ac97);


 	ac97_set_drvdata(adev, wm97xx);
 	dev_info(wm97xx->dev, "wm97xx core found, id=0x%x\n",
 		 adev->vendor_id);

 	codec_pdata = &wm97xx->codec_pdata;
 	codec_pdata->ac97 = wm97xx->ac97;
 	codec_pdata->batt_pdata = pdata->batt_pdata;

 	switch (adev->vendor_id) {
 	case WM9705_VENDOR_ID:
 		config = &wm9705_regmap_config;
 		cells = wm9705_cells;
 		nb_cells = ARRAY_SIZE(wm9705_cells);
 		break;
 	case WM9712_VENDOR_ID:
 		config = &wm9712_regmap_config;
 		cells = wm9712_cells;
 		nb_cells = ARRAY_SIZE(wm9712_cells);
 		break;
 	case WM9713_VENDOR_ID:
 		config = &wm9713_regmap_config;
 		cells = wm9713_cells;
 		nb_cells = ARRAY_SIZE(wm9713_cells);
 		break;
 	default:
 		goto err_free_compat;
 	}

 	for (i = 0; i < nb_cells; i++) {
 		cells[i].platform_data = codec_pdata;
 		cells[i].pdata_size = sizeof(*codec_pdata);
 	}

 	codec_pdata->regmap = devm_regmap_init_ac97(wm97xx->ac97, config);
 	if (IS_ERR(codec_pdata->regmap)) {
 		ret = PTR_ERR(codec_pdata->regmap);
 		goto err_free_compat;
 	}

 	ret = devm_mfd_add_devices(wm97xx->dev, PLATFORM_DEVID_NONE,
 				   cells, nb_cells, NULL, 0, NULL);
 	if (ret)
 		goto err_free_compat;

 	return ret;

 err_free_compat:
 	snd_ac97_compat_release(wm97xx->ac97);
 	return ret;
 }

 static int wm97xx_ac97_remove(struct ac97_codec_device *adev)
 {
 	struct wm97xx_priv *wm97xx = ac97_get_drvdata(adev);

 	snd_ac97_compat_release(wm97xx->ac97);

 	return 0;
 }

 static const struct ac97_id wm97xx_ac97_ids[] = {
 	{ .id = WM9705_VENDOR_ID, .mask = WM97xx_VENDOR_ID_MASK },
 	{ .id = WM9712_VENDOR_ID, .mask = WM97xx_VENDOR_ID_MASK },
 	{ .id = WM9713_VENDOR_ID, .mask = WM97xx_VENDOR_ID_MASK },
 	{ }
 };

 static struct ac97_codec_driver wm97xx_ac97_driver = {
 	.driver = {
 		.name = "wm97xx-core",
 	},
 	.probe		= wm97xx_ac97_probe,
 	.remove		= wm97xx_ac97_remove,
 	.id_table	= wm97xx_ac97_ids,
 };

 static int __init wm97xx_module_init(void)
 {
 	return snd_ac97_codec_driver_register(&wm97xx_ac97_driver);
 }
 module_init(wm97xx_module_init);

 static void __exit wm97xx_module_exit(void)
 {
 	snd_ac97_codec_driver_unregister(&wm97xx_ac97_driver);
 }
 module_exit(wm97xx_module_exit);

 MODULE_DESCRIPTION("WM9712, WM9713 core driver");
 MODULE_AUTHOR("Robert Jarzmik <robert.jarzmik@free.fr>");
 MODULE_LICENSE("GPL");
	/*
	* Wolfson WM97xx -- Core device
	*
	* Copyright (C) 2017 Robert Jarzmik
	*
	* 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.
	*
	* Features:
	* - an AC97 audio codec
	* - a touchscreen driver
	* - a GPIO block
	*/

	#include <linux/device.h>
	#include <linux/mfd/core.h>
	#include <linux/mfd/wm97xx.h>
	#include <linux/module.h>
	#include <linux/regmap.h>
	#include <linux/slab.h>
	#include <linux/wm97xx.h>
	#include <sound/ac97/codec.h>
	#include <sound/ac97/compat.h>

	#define WM9705_VENDOR_ID 0x574d4c05
	#define WM9712_VENDOR_ID 0x574d4c12
	#define WM9713_VENDOR_ID 0x574d4c13
	#define WM97xx_VENDOR_ID_MASK 0xffffffff

	struct wm97xx_priv {
	struct regmap *regmap;
	struct snd_ac97 *ac97;
	struct device *dev;
	struct wm97xx_platform_data codec_pdata;
	};

	static bool wm97xx_readable_reg(struct device *dev, unsigned int reg)
	{
	switch (reg) {
	case AC97_RESET ... AC97_PCM_SURR_DAC_RATE:
	case AC97_PCM_LR_ADC_RATE:
	case AC97_CENTER_LFE_MASTER:
	case AC97_SPDIF ... AC97_LINE1_LEVEL:
	case AC97_GPIO_CFG ... 0x5c:
	case AC97_CODEC_CLASS_REV ... AC97_PCI_SID:
	case 0x74 ... AC97_VENDOR_ID2:
	return true;
	default:
	return false;
	}
	}

	static bool wm97xx_writeable_reg(struct device *dev, unsigned int reg)
	{
	switch (reg) {
	case AC97_VENDOR_ID1:
	case AC97_VENDOR_ID2:
	return false;
	default:
	return wm97xx_readable_reg(dev, reg);
	}
	}

	static const struct reg_default wm9705_reg_defaults[] = {
	{ 0x02, 0x8000 },
	{ 0x04, 0x8000 },
	{ 0x06, 0x8000 },
	{ 0x0a, 0x8000 },
	{ 0x0c, 0x8008 },
	{ 0x0e, 0x8008 },
	{ 0x10, 0x8808 },
	{ 0x12, 0x8808 },
	{ 0x14, 0x8808 },
	{ 0x16, 0x8808 },
	{ 0x18, 0x8808 },
	{ 0x1a, 0x0000 },
	{ 0x1c, 0x8000 },
	{ 0x20, 0x0000 },
	{ 0x22, 0x0000 },
	{ 0x26, 0x000f },
	{ 0x28, 0x0605 },
	{ 0x2a, 0x0000 },
	{ 0x2c, 0xbb80 },
	{ 0x32, 0xbb80 },
	{ 0x34, 0x2000 },
	{ 0x5a, 0x0000 },
	{ 0x5c, 0x0000 },
	{ 0x72, 0x0808 },
	{ 0x74, 0x0000 },
	{ 0x76, 0x0006 },
	{ 0x78, 0x0000 },
	{ 0x7a, 0x0000 },
	};

	static const struct regmap_config wm9705_regmap_config = {
	.reg_bits = 16,
	.reg_stride = 2,
	.val_bits = 16,
	.max_register = 0x7e,
	.cache_type = REGCACHE_RBTREE,

	.reg_defaults = wm9705_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(wm9705_reg_defaults),
	.volatile_reg = regmap_ac97_default_volatile,
	.readable_reg = wm97xx_readable_reg,
	.writeable_reg = wm97xx_writeable_reg,
	};

	static struct mfd_cell wm9705_cells[] = {
	{ .name = "wm9705-codec", },
	{ .name = "wm97xx-ts", },
	};

	static bool wm9712_volatile_reg(struct device *dev, unsigned int reg)
	{
	switch (reg) {
	case AC97_REC_GAIN:
	return true;
	default:
	return regmap_ac97_default_volatile(dev, reg);
	}
	}

	static const struct reg_default wm9712_reg_defaults[] = {
	{ 0x02, 0x8000 },
	{ 0x04, 0x8000 },
	{ 0x06, 0x8000 },
	{ 0x08, 0x0f0f },
	{ 0x0a, 0xaaa0 },
	{ 0x0c, 0xc008 },
	{ 0x0e, 0x6808 },
	{ 0x10, 0xe808 },
	{ 0x12, 0xaaa0 },
	{ 0x14, 0xad00 },
	{ 0x16, 0x8000 },
	{ 0x18, 0xe808 },
	{ 0x1a, 0x3000 },
	{ 0x1c, 0x8000 },
	{ 0x20, 0x0000 },
	{ 0x22, 0x0000 },
	{ 0x26, 0x000f },
	{ 0x28, 0x0605 },
	{ 0x2a, 0x0410 },
	{ 0x2c, 0xbb80 },
	{ 0x2e, 0xbb80 },
	{ 0x32, 0xbb80 },
	{ 0x34, 0x2000 },
	{ 0x4c, 0xf83e },
	{ 0x4e, 0xffff },
	{ 0x50, 0x0000 },
	{ 0x52, 0x0000 },
	{ 0x56, 0xf83e },
	{ 0x58, 0x0008 },
	{ 0x5c, 0x0000 },
	{ 0x60, 0xb032 },
	{ 0x62, 0x3e00 },
	{ 0x64, 0x0000 },
	{ 0x76, 0x0006 },
	{ 0x78, 0x0001 },
	{ 0x7a, 0x0000 },
	};

	static const struct regmap_config wm9712_regmap_config = {
	.reg_bits = 16,
	.reg_stride = 2,
	.val_bits = 16,
	.max_register = 0x7e,
	.cache_type = REGCACHE_RBTREE,

	.reg_defaults = wm9712_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(wm9712_reg_defaults),
	.volatile_reg = wm9712_volatile_reg,
	.readable_reg = wm97xx_readable_reg,
	.writeable_reg = wm97xx_writeable_reg,
	};

	static struct mfd_cell wm9712_cells[] = {
	{ .name = "wm9712-codec", },
	{ .name = "wm97xx-ts", },
	};

	static const struct reg_default wm9713_reg_defaults[] = {
	{ 0x02, 0x8080 }, /* Speaker Output Volume */
	{ 0x04, 0x8080 }, /* Headphone Output Volume */
	{ 0x06, 0x8080 }, /* Out3/OUT4 Volume */
	{ 0x08, 0xc880 }, /* Mono Volume */
	{ 0x0a, 0xe808 }, /* LINEIN Volume */
	{ 0x0c, 0xe808 }, /* DAC PGA Volume */
	{ 0x0e, 0x0808 }, /* MIC PGA Volume */
	{ 0x10, 0x00da }, /* MIC Routing Control */
	{ 0x12, 0x8000 }, /* Record PGA Volume */
	{ 0x14, 0xd600 }, /* Record Routing */
	{ 0x16, 0xaaa0 }, /* PCBEEP Volume */
	{ 0x18, 0xaaa0 }, /* VxDAC Volume */
	{ 0x1a, 0xaaa0 }, /* AUXDAC Volume */
	{ 0x1c, 0x0000 }, /* Output PGA Mux */
	{ 0x1e, 0x0000 }, /* DAC 3D control */
	{ 0x20, 0x0f0f }, /* DAC Tone Control*/
	{ 0x22, 0x0040 }, /* MIC Input Select & Bias */
	{ 0x24, 0x0000 }, /* Output Volume Mapping & Jack */
	{ 0x26, 0x7f00 }, /* Powerdown Ctrl/Stat*/
	{ 0x28, 0x0405 }, /* Extended Audio ID */
	{ 0x2a, 0x0410 }, /* Extended Audio Start/Ctrl */
	{ 0x2c, 0xbb80 }, /* Audio DACs Sample Rate */
	{ 0x2e, 0xbb80 }, /* AUXDAC Sample Rate */
	{ 0x32, 0xbb80 }, /* Audio ADCs Sample Rate */
	{ 0x36, 0x4523 }, /* PCM codec control */
	{ 0x3a, 0x2000 }, /* SPDIF control */
	{ 0x3c, 0xfdff }, /* Powerdown 1 */
	{ 0x3e, 0xffff }, /* Powerdown 2 */
	{ 0x40, 0x0000 }, /* General Purpose */
	{ 0x42, 0x0000 }, /* Fast Power-Up Control */
	{ 0x44, 0x0080 }, /* MCLK/PLL Control */
	{ 0x46, 0x0000 }, /* MCLK/PLL Control */

	{ 0x4c, 0xfffe }, /* GPIO Pin Configuration */
	{ 0x4e, 0xffff }, /* GPIO Pin Polarity / Type */
	{ 0x50, 0x0000 }, /* GPIO Pin Sticky */
	{ 0x52, 0x0000 }, /* GPIO Pin Wake-Up */
	/* GPIO Pin Status */
	{ 0x56, 0xfffe }, /* GPIO Pin Sharing */
	{ 0x58, 0x4000 }, /* GPIO PullUp/PullDown */
	{ 0x5a, 0x0000 }, /* Additional Functions 1 */
	{ 0x5c, 0x0000 }, /* Additional Functions 2 */
	{ 0x60, 0xb032 }, /* ALC Control */
	{ 0x62, 0x3e00 }, /* ALC / Noise Gate Control */
	{ 0x64, 0x0000 }, /* AUXDAC input control */
	{ 0x74, 0x0000 }, /* Digitiser Reg 1 */
	{ 0x76, 0x0006 }, /* Digitiser Reg 2 */
	{ 0x78, 0x0001 }, /* Digitiser Reg 3 */
	{ 0x7a, 0x0000 }, /* Digitiser Read Back */
	};

	static const struct regmap_config wm9713_regmap_config = {
	.reg_bits = 16,
	.reg_stride = 2,
	.val_bits = 16,
	.max_register = 0x7e,
	.cache_type = REGCACHE_RBTREE,

	.reg_defaults = wm9713_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(wm9713_reg_defaults),
	.volatile_reg = regmap_ac97_default_volatile,
	.readable_reg = wm97xx_readable_reg,
	.writeable_reg = wm97xx_writeable_reg,
	};

	static struct mfd_cell wm9713_cells[] = {
	{ .name = "wm9713-codec", },
	{ .name = "wm97xx-ts", },
	};

	static int wm97xx_ac97_probe(struct ac97_codec_device *adev)
	{
	struct wm97xx_priv *wm97xx;
	const struct regmap_config *config;
	struct wm97xx_platform_data *codec_pdata;
	struct mfd_cell *cells;
	int ret = -ENODEV, nb_cells, i;
	struct wm97xx_pdata *pdata = snd_ac97_codec_get_platdata(adev);

	wm97xx = devm_kzalloc(ac97_codec_dev2dev(adev),
	sizeof(*wm97xx), GFP_KERNEL);
	if (!wm97xx)
	return -ENOMEM;

	wm97xx->dev = ac97_codec_dev2dev(adev);
	wm97xx->ac97 = snd_ac97_compat_alloc(adev);
	if (IS_ERR(wm97xx->ac97))
	return PTR_ERR(wm97xx->ac97);


	ac97_set_drvdata(adev, wm97xx);
	dev_info(wm97xx->dev, "wm97xx core found, id=0x%x\n",
	adev->vendor_id);

	codec_pdata = &wm97xx->codec_pdata;
	codec_pdata->ac97 = wm97xx->ac97;
	codec_pdata->batt_pdata = pdata->batt_pdata;

	switch (adev->vendor_id) {
	case WM9705_VENDOR_ID:
	config = &wm9705_regmap_config;
	cells = wm9705_cells;
	nb_cells = ARRAY_SIZE(wm9705_cells);
	break;
	case WM9712_VENDOR_ID:
	config = &wm9712_regmap_config;
	cells = wm9712_cells;
	nb_cells = ARRAY_SIZE(wm9712_cells);
	break;
	case WM9713_VENDOR_ID:
	config = &wm9713_regmap_config;
	cells = wm9713_cells;
	nb_cells = ARRAY_SIZE(wm9713_cells);
	break;
	default:
	goto err_free_compat;
	}

	for (i = 0; i < nb_cells; i++) {
	cells[i].platform_data = codec_pdata;
	cells[i].pdata_size = sizeof(*codec_pdata);
	}

	codec_pdata->regmap = devm_regmap_init_ac97(wm97xx->ac97, config);
	if (IS_ERR(codec_pdata->regmap)) {
	ret = PTR_ERR(codec_pdata->regmap);
	goto err_free_compat;
	}

	ret = devm_mfd_add_devices(wm97xx->dev, PLATFORM_DEVID_NONE,
	cells, nb_cells, NULL, 0, NULL);
	if (ret)
	goto err_free_compat;

	return ret;

	err_free_compat:
	snd_ac97_compat_release(wm97xx->ac97);
	return ret;
	}

	static int wm97xx_ac97_remove(struct ac97_codec_device *adev)
	{
	struct wm97xx_priv *wm97xx = ac97_get_drvdata(adev);

	snd_ac97_compat_release(wm97xx->ac97);

	return 0;
	}

	static const struct ac97_id wm97xx_ac97_ids[] = {
	{ .id = WM9705_VENDOR_ID, .mask = WM97xx_VENDOR_ID_MASK },
	{ .id = WM9712_VENDOR_ID, .mask = WM97xx_VENDOR_ID_MASK },
	{ .id = WM9713_VENDOR_ID, .mask = WM97xx_VENDOR_ID_MASK },
	{ }
	};

	static struct ac97_codec_driver wm97xx_ac97_driver = {
	.driver = {
	.name = "wm97xx-core",
	},
	.probe = wm97xx_ac97_probe,
	.remove = wm97xx_ac97_remove,
	.id_table = wm97xx_ac97_ids,
	};

	static int __init wm97xx_module_init(void)
	{
	return snd_ac97_codec_driver_register(&wm97xx_ac97_driver);
	}
	module_init(wm97xx_module_init);

	static void __exit wm97xx_module_exit(void)
	{
	snd_ac97_codec_driver_unregister(&wm97xx_ac97_driver);
	}
	module_exit(wm97xx_module_exit);

	MODULE_DESCRIPTION("WM9712, WM9713 core driver");
	MODULE_AUTHOR("Robert Jarzmik <robert.jarzmik@free.fr>");
	MODULE_LICENSE("GPL");