/* * 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");