mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2025-01-17 02:36:21 +00:00
mfd: wm97xx-core: core support for wm97xx Codec
The WM9705, WM9712 and WM9713 are highly integrated codecs, with an audio codec, DAC and ADC, GPIO unit and a touchscreen interface. Historically the support was spread across drivers/input/touchscreen and sound/soc/codecs. The sharing was done through ac97 bus sharing. This model will not withstand the new AC97 bus model, where codecs are discovered on runtime. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Robert Jarzmik
Mark Brown
parent
c72f61e740
commit
a5c6951c49
@ -1746,6 +1746,20 @@ config MFD_WM8994
|
||||
core support for the WM8994, in order to use the actual
|
||||
functionaltiy of the device other drivers must be enabled.
|
||||
|
||||
config MFD_WM97xx
|
||||
tristate "Wolfson Microelectronics WM97xx"
|
||||
select MFD_CORE
|
||||
select REGMAP_AC97
|
||||
select AC97_BUS_COMPAT
|
||||
depends on AC97_BUS_NEW
|
||||
help
|
||||
The WM9705, WM9712 and WM9713 is a highly integrated hi-fi CODEC
|
||||
designed for smartphone applications. As well as audio functionality
|
||||
it has on board GPIO and a touchscreen functionality which is
|
||||
supported via the relevant subsystems. This driver provides core
|
||||
support for the WM97xx, in order to use the actual functionaltiy of
|
||||
the device other drivers must be enabled.
|
||||
|
||||
config MFD_STW481X
|
||||
tristate "Support for ST Microelectronics STw481x"
|
||||
depends on I2C && (ARCH_NOMADIK || COMPILE_TEST)
|
||||
|
||||
@ -73,6 +73,7 @@ obj-$(CONFIG_MFD_WM8350) += wm8350.o
|
||||
obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o
|
||||
wm8994-objs := wm8994-core.o wm8994-irq.o wm8994-regmap.o
|
||||
obj-$(CONFIG_MFD_WM8994) += wm8994.o
|
||||
obj-$(CONFIG_MFD_WM97xx) += wm97xx-core.o
|
||||
|
||||
obj-$(CONFIG_TPS6105X) += tps6105x.o
|
||||
obj-$(CONFIG_TPS65010) += tps65010.o
|
||||
|
||||
366
drivers/mfd/wm97xx-core.c
Normal file
366
drivers/mfd/wm97xx-core.c
Normal file
@ -0,0 +1,366 @@
|
||||
/*
|
||||
* 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");
|
||||
|
||||
25
include/linux/mfd/wm97xx.h
Normal file
25
include/linux/mfd/wm97xx.h
Normal file
@ -0,0 +1,25 @@
|
||||
/*
|
||||
* wm97xx client interface
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __LINUX_MFD_WM97XX_H
|
||||
#define __LINUX_MFD_WM97XX_H
|
||||
|
||||
struct regmap;
|
||||
struct wm97xx_batt_pdata;
|
||||
struct snd_ac97;
|
||||
|
||||
struct wm97xx_platform_data {
|
||||
struct snd_ac97 *ac97;
|
||||
struct regmap *regmap;
|
||||
struct wm97xx_batt_pdata *batt_pdata;
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
x
Reference in New Issue
Block a user