[linux-block.git] / drivers / mfd / wm8994-core.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * wm8994-core.c  --  Device access for Wolfson WM8994
 *
 * Copyright 2009 Wolfson Microelectronics PLC.
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/mfd/core.h>
#include <linux/of.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/regulator/machine.h>

#include <linux/mfd/wm8994/core.h>
#include <linux/mfd/wm8994/pdata.h>
#include <linux/mfd/wm8994/registers.h>

#include "wm8994.h"

static const struct mfd_cell wm8994_regulator_devs[] = {
	{
		.name = "wm8994-ldo",
		.id = 0,
		.pm_runtime_no_callbacks = true,
	},
	{
		.name = "wm8994-ldo",
		.id = 1,
		.pm_runtime_no_callbacks = true,
	},
};

static const struct resource wm8994_codec_resources[] = {
	{
		.start = WM8994_IRQ_TEMP_SHUT,
		.end   = WM8994_IRQ_TEMP_WARN,
		.flags = IORESOURCE_IRQ,
	},
};

static const struct resource wm8994_gpio_resources[] = {
	{
		.start = WM8994_IRQ_GPIO(1),
		.end   = WM8994_IRQ_GPIO(11),
		.flags = IORESOURCE_IRQ,
	},
};

static const struct mfd_cell wm8994_devs[] = {
	{
		.name = "wm8994-codec",
		.num_resources = ARRAY_SIZE(wm8994_codec_resources),
		.resources = wm8994_codec_resources,
	},

	{
		.name = "wm8994-gpio",
		.num_resources = ARRAY_SIZE(wm8994_gpio_resources),
		.resources = wm8994_gpio_resources,
		.pm_runtime_no_callbacks = true,
	},
};

/*
 * Supplies for the main bulk of CODEC; the LDO supplies are ignored
 * and should be handled via the standard regulator API supply
 * management.
 */
static const char *wm1811_main_supplies[] = {
	"DBVDD1",
	"DBVDD2",
	"DBVDD3",
	"DCVDD",
	"AVDD1",
	"AVDD2",
	"CPVDD",
	"SPKVDD1",
	"SPKVDD2",
};

static const char *wm8994_main_supplies[] = {
	"DBVDD",
	"DCVDD",
	"AVDD1",
	"AVDD2",
	"CPVDD",
	"SPKVDD1",
	"SPKVDD2",
};

static const char *wm8958_main_supplies[] = {
	"DBVDD1",
	"DBVDD2",
	"DBVDD3",
	"DCVDD",
	"AVDD1",
	"AVDD2",
	"CPVDD",
	"SPKVDD1",
	"SPKVDD2",
};

static int wm8994_suspend(struct device *dev)
{
	struct wm8994 *wm8994 = dev_get_drvdata(dev);
	int ret;

	/* Don't actually go through with the suspend if the CODEC is
	 * still active for accessory detect. */
	switch (wm8994->type) {
	case WM8958:
	case WM1811:
		ret = wm8994_reg_read(wm8994, WM8958_MIC_DETECT_1);
		if (ret < 0) {
			dev_err(dev, "Failed to read power status: %d\n", ret);
		} else if (ret & WM8958_MICD_ENA) {
			dev_dbg(dev, "CODEC still active, ignoring suspend\n");
			return 0;
		}
		break;
	default:
		break;
	}

	/* Disable LDO pulldowns while the device is suspended if we
	 * don't know that something will be driving them. */
	if (!wm8994->ldo_ena_always_driven)
		wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,
				WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD,
				WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD);

	/* Explicitly put the device into reset in case regulators
	 * don't get disabled in order to ensure consistent restart.
	 */
	wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET,
			 wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET));

	regcache_mark_dirty(wm8994->regmap);

	/* Restore GPIO registers to prevent problems with mismatched
	 * pin configurations.
	 */
	ret = regcache_sync_region(wm8994->regmap, WM8994_GPIO_1,
				   WM8994_GPIO_11);
	if (ret != 0)
		dev_err(dev, "Failed to restore GPIO registers: %d\n", ret);

	/* In case one of the GPIOs is used as a wake input. */
	ret = regcache_sync_region(wm8994->regmap,
				   WM8994_INTERRUPT_STATUS_1_MASK,
				   WM8994_INTERRUPT_STATUS_1_MASK);
	if (ret != 0)
		dev_err(dev, "Failed to restore interrupt mask: %d\n", ret);

	regcache_cache_only(wm8994->regmap, true);
	wm8994->suspended = true;

	ret = regulator_bulk_disable(wm8994->num_supplies,
				     wm8994->supplies);
	if (ret != 0) {
		dev_err(dev, "Failed to disable supplies: %d\n", ret);
		return ret;
	}

	return 0;
}

static int wm8994_resume(struct device *dev)
{
	struct wm8994 *wm8994 = dev_get_drvdata(dev);
	int ret;

	/* We may have lied to the PM core about suspending */
	if (!wm8994->suspended)
		return 0;

	ret = regulator_bulk_enable(wm8994->num_supplies,
				    wm8994->supplies);
	if (ret != 0) {
		dev_err(dev, "Failed to enable supplies: %d\n", ret);
		return ret;
	}

	regcache_cache_only(wm8994->regmap, false);
	ret = regcache_sync(wm8994->regmap);
	if (ret != 0) {
		dev_err(dev, "Failed to restore register map: %d\n", ret);
		goto err_enable;
	}

	/* Disable LDO pulldowns while the device is active */
	wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,
			WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD,
			0);

	wm8994->suspended = false;

	return 0;

err_enable:
	regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies);

	return ret;
}

#ifdef CONFIG_REGULATOR
static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo)
{
	struct wm8994_ldo_pdata *ldo_pdata;

	if (!pdata)
		return 0;

	ldo_pdata = &pdata->ldo[ldo];

	if (!ldo_pdata->init_data)
		return 0;

	return ldo_pdata->init_data->num_consumer_supplies != 0;
}
#else
static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo)
{
	return 0;
}
#endif

static const struct reg_sequence wm8994_revc_patch[] = {
	{ 0x102, 0x3 },
	{ 0x56, 0x3 },
	{ 0x817, 0x0 },
	{ 0x102, 0x0 },
};

static const struct reg_sequence wm8958_reva_patch[] = {
	{ 0x102, 0x3 },
	{ 0xcb, 0x81 },
	{ 0x817, 0x0 },
	{ 0x102, 0x0 },
};

static const struct reg_sequence wm1811_reva_patch[] = {
	{ 0x102, 0x3 },
	{ 0x56, 0xc07 },
	{ 0x5d, 0x7e },
	{ 0x5e, 0x0 },
	{ 0x102, 0x0 },
};

#ifdef CONFIG_OF
static int wm8994_set_pdata_from_of(struct wm8994 *wm8994)
{
	struct device_node *np = wm8994->dev->of_node;
	struct wm8994_pdata *pdata = &wm8994->pdata;
	int i;

	if (!np)
		return 0;

	if (of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_defaults,
				       ARRAY_SIZE(pdata->gpio_defaults)) >= 0) {
		for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
			if (wm8994->pdata.gpio_defaults[i] == 0)
				pdata->gpio_defaults[i]
					= WM8994_CONFIGURE_GPIO;
		}
	}

	of_property_read_u32_array(np, "wlf,micbias-cfg", pdata->micbias,
				   ARRAY_SIZE(pdata->micbias));

	pdata->lineout1_diff = !of_property_read_bool(np, "wlf,lineout1-se");
	pdata->lineout2_diff = !of_property_read_bool(np, "wlf,lineout2-se");
	pdata->lineout1fb = of_property_read_bool(np, "wlf,lineout1-feedback");
	pdata->lineout2fb = of_property_read_bool(np, "wlf,lineout2-feedback") ||
		of_property_read_bool(np, "wlf,ldoena-always-driven");

	pdata->spkmode_pu = of_property_read_bool(np, "wlf,spkmode-pu");

	pdata->csnaddr_pd = of_property_read_bool(np, "wlf,csnaddr-pd");

	return 0;
}
#else
static int wm8994_set_pdata_from_of(struct wm8994 *wm8994)
{
	return 0;
}
#endif

/*
 * Instantiate the generic non-control parts of the device.
 */
static int wm8994_device_init(struct wm8994 *wm8994, int irq)
{
	struct wm8994_pdata *pdata;
	struct regmap_config *regmap_config;
	const struct reg_sequence *regmap_patch = NULL;
	const char *devname;
	int ret, i, patch_regs = 0;
	int pulls = 0;

	if (dev_get_platdata(wm8994->dev)) {
		pdata = dev_get_platdata(wm8994->dev);
		wm8994->pdata = *pdata;
	}
	pdata = &wm8994->pdata;

	ret = wm8994_set_pdata_from_of(wm8994);
	if (ret != 0)
		return ret;

	/* Add the on-chip regulators first for bootstrapping */
	ret = mfd_add_devices(wm8994->dev, 0,
			      wm8994_regulator_devs,
			      ARRAY_SIZE(wm8994_regulator_devs),
			      NULL, 0, NULL);
	if (ret != 0) {
		dev_err(wm8994->dev, "Failed to add children: %d\n", ret);
		goto err;
	}

	switch (wm8994->type) {
	case WM1811:
		wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies);
		break;
	case WM8994:
		wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies);
		break;
	case WM8958:
		wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies);
		break;
	default:
		BUG();
		goto err;
	}

	wm8994->supplies = devm_kcalloc(wm8994->dev,
					wm8994->num_supplies,
					sizeof(struct regulator_bulk_data),
					GFP_KERNEL);
	if (!wm8994->supplies) {
		ret = -ENOMEM;
		goto err;
	}

	switch (wm8994->type) {
	case WM1811:
		for (i = 0; i < ARRAY_SIZE(wm1811_main_supplies); i++)
			wm8994->supplies[i].supply = wm1811_main_supplies[i];
		break;
	case WM8994:
		for (i = 0; i < ARRAY_SIZE(wm8994_main_supplies); i++)
			wm8994->supplies[i].supply = wm8994_main_supplies[i];
		break;
	case WM8958:
		for (i = 0; i < ARRAY_SIZE(wm8958_main_supplies); i++)
			wm8994->supplies[i].supply = wm8958_main_supplies[i];
		break;
	default:
		BUG();
		goto err;
	}

	/*
	 * Can't use devres helper here as some of the supplies are provided by
	 * wm8994->dev's children (regulators) and those regulators are
	 * unregistered by the devres core before the supplies are freed.
	 */
	ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies,
				 wm8994->supplies);
	if (ret != 0) {
		if (ret != -EPROBE_DEFER)
			dev_err(wm8994->dev, "Failed to get supplies: %d\n",
				ret);
		goto err;
	}

	ret = regulator_bulk_enable(wm8994->num_supplies, wm8994->supplies);
	if (ret != 0) {
		dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret);
		goto err_regulator_free;
	}

	ret = wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET);
	if (ret < 0) {
		dev_err(wm8994->dev, "Failed to read ID register\n");
		goto err_enable;
	}
	switch (ret) {
	case 0x1811:
		devname = "WM1811";
		if (wm8994->type != WM1811)
			dev_warn(wm8994->dev, "Device registered as type %d\n",
				 wm8994->type);
		wm8994->type = WM1811;
		break;
	case 0x8994:
		devname = "WM8994";
		if (wm8994->type != WM8994)
			dev_warn(wm8994->dev, "Device registered as type %d\n",
				 wm8994->type);
		wm8994->type = WM8994;
		break;
	case 0x8958:
		devname = "WM8958";
		if (wm8994->type != WM8958)
			dev_warn(wm8994->dev, "Device registered as type %d\n",
				 wm8994->type);
		wm8994->type = WM8958;
		break;
	default:
		dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n",
			ret);
		ret = -EINVAL;
		goto err_enable;
	}

	ret = wm8994_reg_read(wm8994, WM8994_CHIP_REVISION);
	if (ret < 0) {
		dev_err(wm8994->dev, "Failed to read revision register: %d\n",
			ret);
		goto err_enable;
	}
	wm8994->revision = ret & WM8994_CHIP_REV_MASK;
	wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT;

	switch (wm8994->type) {
	case WM8994:
		switch (wm8994->revision) {
		case 0:
		case 1:
			dev_warn(wm8994->dev,
				 "revision %c not fully supported\n",
				 'A' + wm8994->revision);
			break;
		case 2:
		case 3:
		default:
			regmap_patch = wm8994_revc_patch;
			patch_regs = ARRAY_SIZE(wm8994_revc_patch);
			break;
		}
		break;

	case WM8958:
		switch (wm8994->revision) {
		case 0:
			regmap_patch = wm8958_reva_patch;
			patch_regs = ARRAY_SIZE(wm8958_reva_patch);
			break;
		default:
			break;
		}
		break;

	case WM1811:
		/* Revision C did not change the relevant layer */
		if (wm8994->revision > 1)
			wm8994->revision++;

		regmap_patch = wm1811_reva_patch;
		patch_regs = ARRAY_SIZE(wm1811_reva_patch);
		break;

	default:
		break;
	}

	dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n", devname,
		 'A' + wm8994->revision, wm8994->cust_id);

	switch (wm8994->type) {
	case WM1811:
		regmap_config = &wm1811_regmap_config;
		break;
	case WM8994:
		regmap_config = &wm8994_regmap_config;
		break;
	case WM8958:
		regmap_config = &wm8958_regmap_config;
		break;
	default:
		dev_err(wm8994->dev, "Unknown device type %d\n", wm8994->type);
		ret = -EINVAL;
		goto err_enable;
	}

	ret = regmap_reinit_cache(wm8994->regmap, regmap_config);
	if (ret != 0) {
		dev_err(wm8994->dev, "Failed to reinit register cache: %d\n",
			ret);
		goto err_enable;
	}

	/* Explicitly put the device into reset in case regulators
	 * don't get disabled in order to ensure we know the device
	 * state.
	 */
	ret = wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET,
			       wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET));
	if (ret != 0) {
		dev_err(wm8994->dev, "Failed to reset device: %d\n", ret);
		goto err_enable;
	}

	if (regmap_patch) {
		ret = regmap_register_patch(wm8994->regmap, regmap_patch,
					    patch_regs);
		if (ret != 0) {
			dev_err(wm8994->dev, "Failed to register patch: %d\n",
				ret);
			goto err_enable;
		}
	}

	wm8994->irq_base = pdata->irq_base;
	wm8994->gpio_base = pdata->gpio_base;

	/* GPIO configuration is only applied if it's non-zero */
	for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
		if (pdata->gpio_defaults[i]) {
			wm8994_set_bits(wm8994, WM8994_GPIO_1 + i,
					0xffff, pdata->gpio_defaults[i]);
		}
	}

	wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven;

	if (pdata->spkmode_pu)
		pulls |= WM8994_SPKMODE_PU;
	if (pdata->csnaddr_pd)
		pulls |= WM8994_CSNADDR_PD;

	/* Disable unneeded pulls */
	wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,
			WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD |
			WM8994_SPKMODE_PU | WM8994_CSNADDR_PD,
			pulls);

	/* In some system designs where the regulators are not in use,
	 * we can achieve a small reduction in leakage currents by
	 * floating LDO outputs.  This bit makes no difference if the
	 * LDOs are enabled, it only affects cases where the LDOs were
	 * in operation and are then disabled.
	 */
	for (i = 0; i < WM8994_NUM_LDO_REGS; i++) {
		if (wm8994_ldo_in_use(pdata, i))
			wm8994_set_bits(wm8994, WM8994_LDO_1 + i,
					WM8994_LDO1_DISCH, WM8994_LDO1_DISCH);
		else
			wm8994_set_bits(wm8994, WM8994_LDO_1 + i,
					WM8994_LDO1_DISCH, 0);
	}

	wm8994_irq_init(wm8994);

	ret = mfd_add_devices(wm8994->dev, -1,
			      wm8994_devs, ARRAY_SIZE(wm8994_devs),
			      NULL, 0, NULL);
	if (ret != 0) {
		dev_err(wm8994->dev, "Failed to add children: %d\n", ret);
		goto err_irq;
	}

	pm_runtime_set_active(wm8994->dev);
	pm_runtime_enable(wm8994->dev);
	pm_runtime_idle(wm8994->dev);

	return 0;

err_irq:
	wm8994_irq_exit(wm8994);
err_enable:
	regulator_bulk_disable(wm8994->num_supplies,
			       wm8994->supplies);
err_regulator_free:
	regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);
err:
	mfd_remove_devices(wm8994->dev);
	return ret;
}

static void wm8994_device_exit(struct wm8994 *wm8994)
{
	pm_runtime_get_sync(wm8994->dev);
	pm_runtime_disable(wm8994->dev);
	pm_runtime_put_noidle(wm8994->dev);
	wm8994_irq_exit(wm8994);
	regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies);
	regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);
	mfd_remove_devices(wm8994->dev);
}

static const struct of_device_id wm8994_of_match[] = {
	{ .compatible = "wlf,wm1811", .data = (void *)WM1811 },
	{ .compatible = "wlf,wm8994", .data = (void *)WM8994 },
	{ .compatible = "wlf,wm8958", .data = (void *)WM8958 },
	{ }
};
MODULE_DEVICE_TABLE(of, wm8994_of_match);

static int wm8994_i2c_probe(struct i2c_client *i2c)
{
	struct wm8994 *wm8994;
	int ret;

	wm8994 = devm_kzalloc(&i2c->dev, sizeof(struct wm8994), GFP_KERNEL);
	if (wm8994 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, wm8994);
	wm8994->dev = &i2c->dev;
	wm8994->irq = i2c->irq;

	wm8994->type = (enum wm8994_type)i2c_get_match_data(i2c);

	wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config);
	if (IS_ERR(wm8994->regmap)) {
		ret = PTR_ERR(wm8994->regmap);
		dev_err(wm8994->dev, "Failed to allocate register map: %d\n",
			ret);
		return ret;
	}

	return wm8994_device_init(wm8994, i2c->irq);
}

static void wm8994_i2c_remove(struct i2c_client *i2c)
{
	struct wm8994 *wm8994 = i2c_get_clientdata(i2c);

	wm8994_device_exit(wm8994);
}

static const struct i2c_device_id wm8994_i2c_id[] = {
	{ "wm1811", WM1811 },
	{ "wm1811a", WM1811 },
	{ "wm8994", WM8994 },
	{ "wm8958", WM8958 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, wm8994_i2c_id);

static const struct dev_pm_ops wm8994_pm_ops = {
	RUNTIME_PM_OPS(wm8994_suspend, wm8994_resume, NULL)
};

static struct i2c_driver wm8994_i2c_driver = {
	.driver = {
		.name = "wm8994",
		.pm = pm_ptr(&wm8994_pm_ops),
		.of_match_table = wm8994_of_match,
	},
	.probe = wm8994_i2c_probe,
	.remove = wm8994_i2c_remove,
	.id_table = wm8994_i2c_id,
};

module_i2c_driver(wm8994_i2c_driver);

MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_SOFTDEP("pre: wm8994_regulator");
Commit	Line	Data
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
9e501086 MB	2	/*
	3	* wm8994-core.c -- Device access for Wolfson WM8994
	4	*
	5	* Copyright 2009 Wolfson Microelectronics PLC.
	6	*
	7	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
9e501086 MB	8	*/
	9
	10	#include <linux/kernel.h>
	11	#include <linux/module.h>
5a0e3ad6	12	#include <linux/slab.h>
9e501086	13	#include <linux/i2c.h>
d6c645fc	14	#include <linux/err.h>
9e501086 MB	15	#include <linux/delay.h>
9e501086 MB	16	#include <linux/mfd/core.h>
20fb2772	17	#include <linux/of.h>
d450f19e	18	#include <linux/pm_runtime.h>
d6c645fc	19	#include <linux/regmap.h>
9e501086 MB	20	#include <linux/regulator/consumer.h>
	21	#include <linux/regulator/machine.h>
	22
	23	#include <linux/mfd/wm8994/core.h>
	24	#include <linux/mfd/wm8994/pdata.h>
	25	#include <linux/mfd/wm8994/registers.h>
	26
c3f13861	27	#include "wm8994.h"
9e501086	28
ad59de48	29	static const struct mfd_cell wm8994_regulator_devs[] = {
d450f19e MB	30	{
d450f19e MB	31	.name = "wm8994-ldo",
fef22cb4	32	.id = 0,
d450f19e MB	33	.pm_runtime_no_callbacks = true,
	34	},
	35	{
	36	.name = "wm8994-ldo",
fef22cb4	37	.id = 1,
d450f19e MB	38	.pm_runtime_no_callbacks = true,
d450f19e MB	39	},
9e501086 MB	40	};
9e501086 MB	41
f977284a	42	static const struct resource wm8994_codec_resources[] = {
c9fbf7e0 MB	43	{
	44	.start = WM8994_IRQ_TEMP_SHUT,
	45	.end = WM8994_IRQ_TEMP_WARN,
	46	.flags = IORESOURCE_IRQ,
	47	},
	48	};
	49
f977284a	50	static const struct resource wm8994_gpio_resources[] = {
c9fbf7e0 MB	51	{
	52	.start = WM8994_IRQ_GPIO(1),
	53	.end = WM8994_IRQ_GPIO(11),
	54	.flags = IORESOURCE_IRQ,
	55	},
	56	};
	57
ad59de48	58	static const struct mfd_cell wm8994_devs[] = {
c9fbf7e0 MB	59	{
	60	.name = "wm8994-codec",
	61	.num_resources = ARRAY_SIZE(wm8994_codec_resources),
	62	.resources = wm8994_codec_resources,
	63	},
	64
	65	{
	66	.name = "wm8994-gpio",
	67	.num_resources = ARRAY_SIZE(wm8994_gpio_resources),
	68	.resources = wm8994_gpio_resources,
d450f19e	69	.pm_runtime_no_callbacks = true,
c9fbf7e0	70	},
9e501086 MB	71	};
	72
	73	/*
	74	* Supplies for the main bulk of CODEC; the LDO supplies are ignored
	75	* and should be handled via the standard regulator API supply
	76	* management.
	77	*/
b1f43bf3 MB	78	static const char *wm1811_main_supplies[] = {
	79	"DBVDD1",
	80	"DBVDD2",
	81	"DBVDD3",
	82	"DCVDD",
	83	"AVDD1",
	84	"AVDD2",
	85	"CPVDD",
	86	"SPKVDD1",
	87	"SPKVDD2",
	88	};
	89
9e501086 MB	90	static const char *wm8994_main_supplies[] = {
	91	"DBVDD",
	92	"DCVDD",
	93	"AVDD1",
	94	"AVDD2",
	95	"CPVDD",
	96	"SPKVDD1",
	97	"SPKVDD2",
	98	};
	99
559e0df6 MB	100	static const char *wm8958_main_supplies[] = {
	101	"DBVDD1",
	102	"DBVDD2",
	103	"DBVDD3",
	104	"DCVDD",
	105	"AVDD1",
	106	"AVDD2",
	107	"CPVDD",
	108	"SPKVDD1",
	109	"SPKVDD2",
	110	};
	111
d450f19e	112	static int wm8994_suspend(struct device *dev)
9e501086 MB	113	{
	114	struct wm8994 *wm8994 = dev_get_drvdata(dev);
	115	int ret;
	116
77bd70e9	117	/* Don't actually go through with the suspend if the CODEC is
ebe38f80	118	* still active for accessory detect. */
5f40c6b6 MB	119	switch (wm8994->type) {
5f40c6b6 MB	120	case WM8958:
b5488b6e	121	case WM1811:
5f40c6b6 MB	122	ret = wm8994_reg_read(wm8994, WM8958_MIC_DETECT_1);
	123	if (ret < 0) {
	124	dev_err(dev, "Failed to read power status: %d\n", ret);
	125	} else if (ret & WM8958_MICD_ENA) {
	126	dev_dbg(dev, "CODEC still active, ignoring suspend\n");
	127	return 0;
	128	}
	129	break;
	130	default:
	131	break;
	132	}
	133
881de670 MB	134	/* Disable LDO pulldowns while the device is suspended if we
	135	* don't know that something will be driving them. */
	136	if (!wm8994->ldo_ena_always_driven)
	137	wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,
	138	WM8994_LDO1ENA_PD \| WM8994_LDO2ENA_PD,
	139	WM8994_LDO1ENA_PD \| WM8994_LDO2ENA_PD);
	140
f40dff9e MB	141	/* Explicitly put the device into reset in case regulators
	142	* don't get disabled in order to ensure consistent restart.
	143	*/
be79cf2f MB	144	wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET,
be79cf2f MB	145	wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET));
f40dff9e	146
ed393dcd MB	147	regcache_mark_dirty(wm8994->regmap);
ed393dcd MB	148
78a27cd3 CR	149	/* Restore GPIO registers to prevent problems with mismatched
	150	* pin configurations.
	151	*/
ed393dcd MB	152	ret = regcache_sync_region(wm8994->regmap, WM8994_GPIO_1,
ed393dcd MB	153	WM8994_GPIO_11);
78a27cd3 CR	154	if (ret != 0)
	155	dev_err(dev, "Failed to restore GPIO registers: %d\n", ret);
	156
1a2017b7 MB	157	/* In case one of the GPIOs is used as a wake input. */
	158	ret = regcache_sync_region(wm8994->regmap,
	159	WM8994_INTERRUPT_STATUS_1_MASK,
	160	WM8994_INTERRUPT_STATUS_1_MASK);
	161	if (ret != 0)
	162	dev_err(dev, "Failed to restore interrupt mask: %d\n", ret);
	163
3befc925	164	regcache_cache_only(wm8994->regmap, true);
77bd70e9 MB	165	wm8994->suspended = true;
77bd70e9 MB	166
559e0df6	167	ret = regulator_bulk_disable(wm8994->num_supplies,
9e501086 MB	168	wm8994->supplies);
	169	if (ret != 0) {
	170	dev_err(dev, "Failed to disable supplies: %d\n", ret);
	171	return ret;
	172	}
	173
	174	return 0;
	175	}
	176
d450f19e	177	static int wm8994_resume(struct device *dev)
9e501086 MB	178	{
9e501086 MB	179	struct wm8994 *wm8994 = dev_get_drvdata(dev);
c3f13861	180	int ret;
9e501086	181
77bd70e9 MB	182	/* We may have lied to the PM core about suspending */
	183	if (!wm8994->suspended)
	184	return 0;
	185
559e0df6	186	ret = regulator_bulk_enable(wm8994->num_supplies,
9e501086 MB	187	wm8994->supplies);
	188	if (ret != 0) {
	189	dev_err(dev, "Failed to enable supplies: %d\n", ret);
	190	return ret;
	191	}
	192
3befc925	193	regcache_cache_only(wm8994->regmap, false);
c3f13861 MB	194	ret = regcache_sync(wm8994->regmap);
	195	if (ret != 0) {
	196	dev_err(dev, "Failed to restore register map: %d\n", ret);
	197	goto err_enable;
98ae1cca	198	}
c9fbf7e0	199
881de670 MB	200	/* Disable LDO pulldowns while the device is active */
	201	wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,
	202	WM8994_LDO1ENA_PD \| WM8994_LDO2ENA_PD,
	203	0);
	204
77bd70e9 MB	205	wm8994->suspended = false;
77bd70e9 MB	206
9e501086	207	return 0;
c3f13861 MB	208
	209	err_enable:
	210	regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies);
	211
	212	return ret;
9e501086	213	}
9e501086 MB	214
	215	#ifdef CONFIG_REGULATOR
	216	static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo)
	217	{
	218	struct wm8994_ldo_pdata *ldo_pdata;
	219
	220	if (!pdata)
	221	return 0;
	222
	223	ldo_pdata = &pdata->ldo[ldo];
	224
	225	if (!ldo_pdata->init_data)
	226	return 0;
	227
	228	return ldo_pdata->init_data->num_consumer_supplies != 0;
	229	}
	230	#else
	231	static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo)
	232	{
	233	return 0;
	234	}
	235	#endif
	236
8019ff6c	237	static const struct reg_sequence wm8994_revc_patch[] = {
462835e4 MB	238	{ 0x102, 0x3 },
	239	{ 0x56, 0x3 },
	240	{ 0x817, 0x0 },
	241	{ 0x102, 0x0 },
	242	};
	243
8019ff6c	244	static const struct reg_sequence wm8958_reva_patch[] = {
462835e4 MB	245	{ 0x102, 0x3 },
	246	{ 0xcb, 0x81 },
	247	{ 0x817, 0x0 },
	248	{ 0x102, 0x0 },
	249	};
	250
8019ff6c	251	static const struct reg_sequence wm1811_reva_patch[] = {
462835e4	252	{ 0x102, 0x3 },
9282a7b9	253	{ 0x56, 0xc07 },
462835e4 MB	254	{ 0x5d, 0x7e },
	255	{ 0x5e, 0x0 },
	256	{ 0x102, 0x0 },
	257	};
	258
20fb2772 MB	259	#ifdef CONFIG_OF
	260	static int wm8994_set_pdata_from_of(struct wm8994 *wm8994)
	261	{
	262	struct device_node *np = wm8994->dev->of_node;
	263	struct wm8994_pdata *pdata = &wm8994->pdata;
	264	int i;
	265
	266	if (!np)
	267	return 0;
	268
	269	if (of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_defaults,
	270	ARRAY_SIZE(pdata->gpio_defaults)) >= 0) {
	271	for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
	272	if (wm8994->pdata.gpio_defaults[i] == 0)
	273	pdata->gpio_defaults[i]
	274	= WM8994_CONFIGURE_GPIO;
	275	}
	276	}
	277
	278	of_property_read_u32_array(np, "wlf,micbias-cfg", pdata->micbias,
	279	ARRAY_SIZE(pdata->micbias));
	280
01330edc RH	281	pdata->lineout1_diff = !of_property_read_bool(np, "wlf,lineout1-se");
	282	pdata->lineout2_diff = !of_property_read_bool(np, "wlf,lineout2-se");
	283	pdata->lineout1fb = of_property_read_bool(np, "wlf,lineout1-feedback");
	284	pdata->lineout2fb = of_property_read_bool(np, "wlf,lineout2-feedback") \|\|
	285	of_property_read_bool(np, "wlf,ldoena-always-driven");
20fb2772	286
102370fb AP	287	pdata->spkmode_pu = of_property_read_bool(np, "wlf,spkmode-pu");
102370fb AP	288
4d3e55bc AP	289	pdata->csnaddr_pd = of_property_read_bool(np, "wlf,csnaddr-pd");
4d3e55bc AP	290
20fb2772 MB	291	return 0;
	292	}
	293	#else
	294	static int wm8994_set_pdata_from_of(struct wm8994 *wm8994)
	295	{
	296	return 0;
	297	}
	298	#endif
	299
9e501086 MB	300	/*
	301	* Instantiate the generic non-control parts of the device.
	302	*/
f791be49	303	static int wm8994_device_init(struct wm8994 *wm8994, int irq)
9e501086	304	{
a8a8fc28	305	struct wm8994_pdata *pdata;
34697898	306	struct regmap_config *regmap_config;
8019ff6c	307	const struct reg_sequence *regmap_patch = NULL;
559e0df6	308	const char *devname;
222bc784	309	int ret, i, patch_regs = 0;
26c34c25	310	int pulls = 0;
9e501086	311
a8a8fc28 MB	312	if (dev_get_platdata(wm8994->dev)) {
	313	pdata = dev_get_platdata(wm8994->dev);
	314	wm8994->pdata = *pdata;
	315	}
	316	pdata = &wm8994->pdata;
	317
20fb2772 MB	318	ret = wm8994_set_pdata_from_of(wm8994);
	319	if (ret != 0)
	320	return ret;
	321
9e501086	322	/* Add the on-chip regulators first for bootstrapping */
fef22cb4	323	ret = mfd_add_devices(wm8994->dev, 0,
9e501086 MB	324	wm8994_regulator_devs,
9e501086 MB	325	ARRAY_SIZE(wm8994_regulator_devs),
55692af5	326	NULL, 0, NULL);
9e501086 MB	327	if (ret != 0) {
9e501086 MB	328	dev_err(wm8994->dev, "Failed to add children: %d\n", ret);
9db4249f	329	goto err;
9e501086 MB	330	}
9e501086 MB	331
559e0df6	332	switch (wm8994->type) {
b1f43bf3 MB	333	case WM1811:
	334	wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies);
	335	break;
559e0df6 MB	336	case WM8994:
	337	wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies);
	338	break;
	339	case WM8958:
	340	wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies);
	341	break;
	342	default:
	343	BUG();
9db4249f	344	goto err;
559e0df6 MB	345	}
559e0df6 MB	346
a86854d0 KC	347	wm8994->supplies = devm_kcalloc(wm8994->dev,
	348	wm8994->num_supplies,
	349	sizeof(struct regulator_bulk_data),
	350	GFP_KERNEL);
fccbd21f AL	351	if (!wm8994->supplies) {
fccbd21f AL	352	ret = -ENOMEM;
9db4249f	353	goto err;
fccbd21f	354	}
9e501086	355
559e0df6	356	switch (wm8994->type) {
b1f43bf3 MB	357	case WM1811:
	358	for (i = 0; i < ARRAY_SIZE(wm1811_main_supplies); i++)
	359	wm8994->supplies[i].supply = wm1811_main_supplies[i];
	360	break;
559e0df6 MB	361	case WM8994:
	362	for (i = 0; i < ARRAY_SIZE(wm8994_main_supplies); i++)
	363	wm8994->supplies[i].supply = wm8994_main_supplies[i];
	364	break;
	365	case WM8958:
	366	for (i = 0; i < ARRAY_SIZE(wm8958_main_supplies); i++)
	367	wm8994->supplies[i].supply = wm8958_main_supplies[i];
	368	break;
	369	default:
	370	BUG();
9db4249f	371	goto err;
559e0df6	372	}
202b5689 VK	373
	374	/*
	375	* Can't use devres helper here as some of the supplies are provided by
	376	* wm8994->dev's children (regulators) and those regulators are
	377	* unregistered by the devres core before the supplies are freed.
	378	*/
	379	ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies,
9e501086 MB	380	wm8994->supplies);
9e501086 MB	381	if (ret != 0) {
7ff864e1 MS	382	if (ret != -EPROBE_DEFER)
	383	dev_err(wm8994->dev, "Failed to get supplies: %d\n",
	384	ret);
9db4249f	385	goto err;
9e501086 MB	386	}
9e501086 MB	387
3e56c468	388	ret = regulator_bulk_enable(wm8994->num_supplies, wm8994->supplies);
9e501086 MB	389	if (ret != 0) {
9e501086 MB	390	dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret);
202b5689	391	goto err_regulator_free;
9e501086 MB	392	}
	393
	394	ret = wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET);
	395	if (ret < 0) {
	396	dev_err(wm8994->dev, "Failed to read ID register\n");
	397	goto err_enable;
	398	}
559e0df6	399	switch (ret) {
b1f43bf3 MB	400	case 0x1811:
	401	devname = "WM1811";
	402	if (wm8994->type != WM1811)
	403	dev_warn(wm8994->dev, "Device registered as type %d\n",
	404	wm8994->type);
	405	wm8994->type = WM1811;
	406	break;
559e0df6 MB	407	case 0x8994:
	408	devname = "WM8994";
	409	if (wm8994->type != WM8994)
	410	dev_warn(wm8994->dev, "Device registered as type %d\n",
	411	wm8994->type);
	412	wm8994->type = WM8994;
	413	break;
	414	case 0x8958:
	415	devname = "WM8958";
	416	if (wm8994->type != WM8958)
	417	dev_warn(wm8994->dev, "Device registered as type %d\n",
	418	wm8994->type);
	419	wm8994->type = WM8958;
	420	break;
	421	default:
9e501086 MB	422	dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n",
	423	ret);
	424	ret = -EINVAL;
	425	goto err_enable;
	426	}
	427
	428	ret = wm8994_reg_read(wm8994, WM8994_CHIP_REVISION);
	429	if (ret < 0) {
	430	dev_err(wm8994->dev, "Failed to read revision register: %d\n",
	431	ret);
	432	goto err_enable;
	433	}
cc7a7279 MB	434	wm8994->revision = ret & WM8994_CHIP_REV_MASK;
cc7a7279 MB	435	wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT;
9e501086	436
a2495bc7 MB	437	switch (wm8994->type) {
a2495bc7 MB	438	case WM8994:
7ed5849c	439	switch (wm8994->revision) {
a2495bc7 MB	440	case 0:
a2495bc7 MB	441	case 1:
559e0df6 MB	442	dev_warn(wm8994->dev,
559e0df6 MB	443	"revision %c not fully supported\n",
7ed5849c	444	'A' + wm8994->revision);
a2495bc7	445	break;
462835e4 MB	446	case 2:
462835e4 MB	447	case 3:
d54e17f9	448	default:
462835e4 MB	449	regmap_patch = wm8994_revc_patch;
	450	patch_regs = ARRAY_SIZE(wm8994_revc_patch);
	451	break;
462835e4 MB	452	}
	453	break;
	454
	455	case WM8958:
	456	switch (wm8994->revision) {
	457	case 0:
	458	regmap_patch = wm8958_reva_patch;
	459	patch_regs = ARRAY_SIZE(wm8958_reva_patch);
	460	break;
a2495bc7 MB	461	default:
	462	break;
	463	}
9e501086	464	break;
462835e4	465
443e67ed MB	466	case WM1811:
443e67ed MB	467	/* Revision C did not change the relevant layer */
7ed5849c MB	468	if (wm8994->revision > 1)
7ed5849c MB	469	wm8994->revision++;
d54e17f9 MB	470
	471	regmap_patch = wm1811_reva_patch;
	472	patch_regs = ARRAY_SIZE(wm1811_reva_patch);
443e67ed	473	break;
462835e4	474
9e501086	475	default:
9e501086 MB	476	break;
	477	}
	478
cc7a7279 MB	479	dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n", devname,
cc7a7279 MB	480	'A' + wm8994->revision, wm8994->cust_id);
9e501086	481
34697898 MB	482	switch (wm8994->type) {
	483	case WM1811:
	484	regmap_config = &wm1811_regmap_config;
	485	break;
	486	case WM8994:
	487	regmap_config = &wm8994_regmap_config;
	488	break;
	489	case WM8958:
	490	regmap_config = &wm8958_regmap_config;
	491	break;
	492	default:
	493	dev_err(wm8994->dev, "Unknown device type %d\n", wm8994->type);
df47df55 AB	494	ret = -EINVAL;
df47df55 AB	495	goto err_enable;
34697898 MB	496	}
	497
	498	ret = regmap_reinit_cache(wm8994->regmap, regmap_config);
	499	if (ret != 0) {
	500	dev_err(wm8994->dev, "Failed to reinit register cache: %d\n",
	501	ret);
df47df55	502	goto err_enable;
34697898	503	}
9e501086	504
f3799e93 MB	505	/* Explicitly put the device into reset in case regulators
	506	* don't get disabled in order to ensure we know the device
	507	* state.
	508	*/
	509	ret = wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET,
	510	wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET));
	511	if (ret != 0) {
	512	dev_err(wm8994->dev, "Failed to reset device: %d\n", ret);
df47df55	513	goto err_enable;
f3799e93 MB	514	}
f3799e93 MB	515
462835e4 MB	516	if (regmap_patch) {
	517	ret = regmap_register_patch(wm8994->regmap, regmap_patch,
	518	patch_regs);
	519	if (ret != 0) {
	520	dev_err(wm8994->dev, "Failed to register patch: %d\n",
	521	ret);
df47df55	522	goto err_enable;
462835e4 MB	523	}
	524	}
	525
a8a8fc28 MB	526	wm8994->irq_base = pdata->irq_base;
	527	wm8994->gpio_base = pdata->gpio_base;
	528
	529	/* GPIO configuration is only applied if it's non-zero */
	530	for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
	531	if (pdata->gpio_defaults[i]) {
	532	wm8994_set_bits(wm8994, WM8994_GPIO_1 + i,
	533	0xffff, pdata->gpio_defaults[i]);
9e501086	534	}
a8a8fc28	535	}
881de670	536
a8a8fc28	537	wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven;
26c34c25	538
a8a8fc28 MB	539	if (pdata->spkmode_pu)
a8a8fc28 MB	540	pulls \|= WM8994_SPKMODE_PU;
4d3e55bc AP	541	if (pdata->csnaddr_pd)
4d3e55bc AP	542	pulls \|= WM8994_CSNADDR_PD;
9e501086	543
26c34c25	544	/* Disable unneeded pulls */
881de670	545	wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,
26c34c25 MB	546	WM8994_LDO1ENA_PD \| WM8994_LDO2ENA_PD \|
	547	WM8994_SPKMODE_PU \| WM8994_CSNADDR_PD,
	548	pulls);
881de670	549
9e501086 MB	550	/* In some system designs where the regulators are not in use,
	551	* we can achieve a small reduction in leakage currents by
	552	* floating LDO outputs. This bit makes no difference if the
	553	* LDOs are enabled, it only affects cases where the LDOs were
	554	* in operation and are then disabled.
	555	*/
	556	for (i = 0; i < WM8994_NUM_LDO_REGS; i++) {
	557	if (wm8994_ldo_in_use(pdata, i))
	558	wm8994_set_bits(wm8994, WM8994_LDO_1 + i,
	559	WM8994_LDO1_DISCH, WM8994_LDO1_DISCH);
	560	else
	561	wm8994_set_bits(wm8994, WM8994_LDO_1 + i,
	562	WM8994_LDO1_DISCH, 0);
	563	}
	564
c9fbf7e0 MB	565	wm8994_irq_init(wm8994);
c9fbf7e0 MB	566
9e501086 MB	567	ret = mfd_add_devices(wm8994->dev, -1,
9e501086 MB	568	wm8994_devs, ARRAY_SIZE(wm8994_devs),
55692af5	569	NULL, 0, NULL);
9e501086 MB	570	if (ret != 0) {
9e501086 MB	571	dev_err(wm8994->dev, "Failed to add children: %d\n", ret);
c9fbf7e0	572	goto err_irq;
9e501086 MB	573	}
9e501086 MB	574
f4a19540	575	pm_runtime_set_active(wm8994->dev);
d450f19e	576	pm_runtime_enable(wm8994->dev);
ee67b0cd	577	pm_runtime_idle(wm8994->dev);
d450f19e	578
9e501086 MB	579	return 0;
9e501086 MB	580
c9fbf7e0 MB	581	err_irq:
c9fbf7e0 MB	582	wm8994_irq_exit(wm8994);
9e501086	583	err_enable:
559e0df6	584	regulator_bulk_disable(wm8994->num_supplies,
9e501086	585	wm8994->supplies);
202b5689 VK	586	err_regulator_free:
202b5689 VK	587	regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);
9db4249f	588	err:
9e501086	589	mfd_remove_devices(wm8994->dev);
9e501086 MB	590	return ret;
	591	}
	592
4740f73f	593	static void wm8994_device_exit(struct wm8994 *wm8994)
9e501086	594	{
f4a19540	595	pm_runtime_get_sync(wm8994->dev);
d450f19e	596	pm_runtime_disable(wm8994->dev);
f4a19540	597	pm_runtime_put_noidle(wm8994->dev);
c9fbf7e0	598	wm8994_irq_exit(wm8994);
3e56c468	599	regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies);
202b5689	600	regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);
bb63f7d3	601	mfd_remove_devices(wm8994->dev);
9e501086 MB	602	}
9e501086 MB	603
cf763c2e	604	static const struct of_device_id wm8994_of_match[] = {
39aa3b5a MB	605	{ .compatible = "wlf,wm1811", .data = (void *)WM1811 },
	606	{ .compatible = "wlf,wm8994", .data = (void *)WM8994 },
	607	{ .compatible = "wlf,wm8958", .data = (void *)WM8958 },
cf763c2e MB	608	{ }
	609	};
	610	MODULE_DEVICE_TABLE(of, wm8994_of_match);
	611
54f872ba	612	static int wm8994_i2c_probe(struct i2c_client *i2c)
9e501086 MB	613	{
9e501086 MB	614	struct wm8994 *wm8994;
d6c645fc	615	int ret;
9e501086	616
2fa33494	617	wm8994 = devm_kzalloc(&i2c->dev, sizeof(struct wm8994), GFP_KERNEL);
d0a11693	618	if (wm8994 == NULL)
9e501086	619	return -ENOMEM;
9e501086 MB	620
	621	i2c_set_clientdata(i2c, wm8994);
	622	wm8994->dev = &i2c->dev;
c9fbf7e0	623	wm8994->irq = i2c->irq;
20fb2772	624
0db434f5	625	wm8994->type = (enum wm8994_type)i2c_get_match_data(i2c);
9e501086	626
9db4249f	627	wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config);
d6c645fc MB	628	if (IS_ERR(wm8994->regmap)) {
	629	ret = PTR_ERR(wm8994->regmap);
	630	dev_err(wm8994->dev, "Failed to allocate register map: %d\n",
	631	ret);
d6c645fc MB	632	return ret;
	633	}
	634
559e0df6	635	return wm8994_device_init(wm8994, i2c->irq);
9e501086 MB	636	}
9e501086 MB	637
ed5c2f5f	638	static void wm8994_i2c_remove(struct i2c_client *i2c)
9e501086 MB	639	{
	640	struct wm8994 *wm8994 = i2c_get_clientdata(i2c);
	641
	642	wm8994_device_exit(wm8994);
9e501086 MB	643	}
9e501086 MB	644
9e501086	645	static const struct i2c_device_id wm8994_i2c_id[] = {
b1f43bf3	646	{ "wm1811", WM1811 },
71d17184	647	{ "wm1811a", WM1811 },
559e0df6 MB	648	{ "wm8994", WM8994 },
559e0df6 MB	649	{ "wm8958", WM8958 },
9e501086 MB	650	{ }
	651	};
	652	MODULE_DEVICE_TABLE(i2c, wm8994_i2c_id);
	653
6394678e	654	static const struct dev_pm_ops wm8994_pm_ops = {
9dd3baec	655	RUNTIME_PM_OPS(wm8994_suspend, wm8994_resume, NULL)
6394678e	656	};
d450f19e	657
9e501086 MB	658	static struct i2c_driver wm8994_i2c_driver = {
9e501086 MB	659	.driver = {
d450f19e	660	.name = "wm8994",
9dd3baec	661	.pm = pm_ptr(&wm8994_pm_ops),
7b64f245	662	.of_match_table = wm8994_of_match,
9e501086	663	},
9816d859	664	.probe = wm8994_i2c_probe,
84449216	665	.remove = wm8994_i2c_remove,
9e501086 MB	666	.id_table = wm8994_i2c_id,
	667	};
	668
ceb57d27	669	module_i2c_driver(wm8994_i2c_driver);
9e501086 MB	670
	671	MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC");
	672	MODULE_LICENSE("GPL");
	673	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
d4f9b542	674	MODULE_SOFTDEP("pre: wm8994_regulator");