mfd: intel_soc_pmic_crc: Merge Intel PMIC core to crc

The core part is misleading since its only purpose to serve Crystal Cove PMIC,
although for couple of different platforms. Merge core part into crc one.

Advantages among others are:
- speed up a compilation and build
- decreasing the code base
- reducing noise in the namespace by making some data static and const

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20220801114211.36267-2-andriy.shevchenko@linux.intel.com

4 files changed, 158 insertions, 194 deletions

diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 0004b7e86220..e02abec18858 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -239,8 +239,7 @@ obj-$(CONFIG_MFD_RT4831)	+= rt4831.o
 obj-$(CONFIG_MFD_RT5033)	+= rt5033.o
 obj-$(CONFIG_MFD_SKY81452)	+= sky81452.o
 
-intel-soc-pmic-objs		:= intel_soc_pmic_core.o intel_soc_pmic_crc.o
-obj-$(CONFIG_INTEL_SOC_PMIC)	+= intel-soc-pmic.o
+obj-$(CONFIG_INTEL_SOC_PMIC)		+= intel_soc_pmic_crc.o
 obj-$(CONFIG_INTEL_SOC_PMIC_BXTWC)	+= intel_soc_pmic_bxtwc.o
 obj-$(CONFIG_INTEL_SOC_PMIC_CHTWC)	+= intel_soc_pmic_chtwc.o
 obj-$(CONFIG_INTEL_SOC_PMIC_CHTDC_TI)	+= intel_soc_pmic_chtdc_ti.o
diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c
deleted file mode 100644
index 85d070bce0e2..000000000000
--- a/drivers/mfd/intel_soc_pmic_core.c
+++ /dev/null
@@ -1,161 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Intel SoC PMIC MFD Driver
- *
- * Copyright (C) 2013, 2014 Intel Corporation. All rights reserved.
- *
- * Author: Yang, Bin <bin.yang@intel.com>
- * Author: Zhu, Lejun <lejun.zhu@linux.intel.com>
- */
-
-#include <linux/acpi.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/mfd/core.h>
-#include <linux/mfd/intel_soc_pmic.h>
-#include <linux/platform_data/x86/soc.h>
-#include <linux/pwm.h>
-#include <linux/regmap.h>
-
-#include "intel_soc_pmic_core.h"
-
-/* PWM consumed by the Intel GFX */
-static struct pwm_lookup crc_pwm_lookup[] = {
-	PWM_LOOKUP("crystal_cove_pwm", 0, "0000:00:02.0", "pwm_pmic_backlight", 0, PWM_POLARITY_NORMAL),
-};
-
-static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c,
-				    const struct i2c_device_id *i2c_id)
-{
-	struct device *dev = &i2c->dev;
-	struct intel_soc_pmic_config *config;
-	struct intel_soc_pmic *pmic;
-	int ret;
-
-	if (soc_intel_is_byt())
-		config = &intel_soc_pmic_config_byt_crc;
-	else
-		config = &intel_soc_pmic_config_cht_crc;
-
-	pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
-	if (!pmic)
-		return -ENOMEM;
-
-	dev_set_drvdata(dev, pmic);
-
-	pmic->regmap = devm_regmap_init_i2c(i2c, config->regmap_config);
-	if (IS_ERR(pmic->regmap))
-		return PTR_ERR(pmic->regmap);
-
-	pmic->irq = i2c->irq;
-
-	ret = regmap_add_irq_chip(pmic->regmap, pmic->irq,
-				  config->irq_flags | IRQF_ONESHOT,
-				  0, config->irq_chip,
-				  &pmic->irq_chip_data);
-	if (ret)
-		return ret;
-
-	ret = enable_irq_wake(pmic->irq);
-	if (ret)
-		dev_warn(dev, "Can't enable IRQ as wake source: %d\n", ret);
-
-	/* Add lookup table for crc-pwm */
-	pwm_add_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
-
-	/* To distuingish this domain from the GPIO/charger's irqchip domains */
-	irq_domain_update_bus_token(regmap_irq_get_domain(pmic->irq_chip_data),
-				    DOMAIN_BUS_NEXUS);
-
-	ret = mfd_add_devices(dev, -1, config->cell_dev,
-			      config->n_cell_devs, NULL, 0,
-			      regmap_irq_get_domain(pmic->irq_chip_data));
-	if (ret)
-		goto err_del_irq_chip;
-
-	return 0;
-
-err_del_irq_chip:
-	pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
-	regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
-	return ret;
-}
-
-static int intel_soc_pmic_i2c_remove(struct i2c_client *i2c)
-{
-	struct intel_soc_pmic *pmic = dev_get_drvdata(&i2c->dev);
-
-	regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
-
-	/* remove crc-pwm lookup table */
-	pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
-
-	mfd_remove_devices(&i2c->dev);
-
-	return 0;
-}
-
-static void intel_soc_pmic_shutdown(struct i2c_client *i2c)
-{
-	struct intel_soc_pmic *pmic = dev_get_drvdata(&i2c->dev);
-
-	disable_irq(pmic->irq);
-
-	return;
-}
-
-#if defined(CONFIG_PM_SLEEP)
-static int intel_soc_pmic_suspend(struct device *dev)
-{
-	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
-
-	disable_irq(pmic->irq);
-
-	return 0;
-}
-
-static int intel_soc_pmic_resume(struct device *dev)
-{
-	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
-
-	enable_irq(pmic->irq);
-
-	return 0;
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(intel_soc_pmic_pm_ops, intel_soc_pmic_suspend,
-			 intel_soc_pmic_resume);
-
-static const struct i2c_device_id intel_soc_pmic_i2c_id[] = {
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, intel_soc_pmic_i2c_id);
-
-#if defined(CONFIG_ACPI)
-static const struct acpi_device_id intel_soc_pmic_acpi_match[] = {
-	{ "INT33FD" },
-	{ },
-};
-MODULE_DEVICE_TABLE(acpi, intel_soc_pmic_acpi_match);
-#endif
-
-static struct i2c_driver intel_soc_pmic_i2c_driver = {
-	.driver = {
-		.name = "intel_soc_pmic_i2c",
-		.pm = &intel_soc_pmic_pm_ops,
-		.acpi_match_table = ACPI_PTR(intel_soc_pmic_acpi_match),
-	},
-	.probe = intel_soc_pmic_i2c_probe,
-	.remove = intel_soc_pmic_i2c_remove,
-	.id_table = intel_soc_pmic_i2c_id,
-	.shutdown = intel_soc_pmic_shutdown,
-};
-
-module_i2c_driver(intel_soc_pmic_i2c_driver);
-
-MODULE_DESCRIPTION("I2C driver for Intel SoC PMIC");
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Yang, Bin <bin.yang@intel.com>");
-MODULE_AUTHOR("Zhu, Lejun <lejun.zhu@linux.intel.com>");
diff --git a/drivers/mfd/intel_soc_pmic_core.h b/drivers/mfd/intel_soc_pmic_core.h
deleted file mode 100644
index d490685845eb..000000000000
--- a/drivers/mfd/intel_soc_pmic_core.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Intel SoC PMIC MFD Driver
- *
- * Copyright (C) 2012-2014 Intel Corporation. All rights reserved.
- *
- * Author: Yang, Bin <bin.yang@intel.com>
- * Author: Zhu, Lejun <lejun.zhu@linux.intel.com>
- */
-
-#ifndef __INTEL_SOC_PMIC_CORE_H__
-#define __INTEL_SOC_PMIC_CORE_H__
-
-struct intel_soc_pmic_config {
-	unsigned long irq_flags;
-	struct mfd_cell *cell_dev;
-	int n_cell_devs;
-	const struct regmap_config *regmap_config;
-	const struct regmap_irq_chip *irq_chip;
-};
-
-extern struct intel_soc_pmic_config intel_soc_pmic_config_byt_crc;
-extern struct intel_soc_pmic_config intel_soc_pmic_config_cht_crc;
-
-#endif	/* __INTEL_SOC_PMIC_CORE_H__ */
diff --git a/drivers/mfd/intel_soc_pmic_crc.c b/drivers/mfd/intel_soc_pmic_crc.c
index 5bb0367bd974..c4e6456976f5 100644
--- a/drivers/mfd/intel_soc_pmic_crc.c
+++ b/drivers/mfd/intel_soc_pmic_crc.c
@@ -2,18 +2,21 @@
 /*
  * Device access for Crystal Cove PMIC
  *
- * Copyright (C) 2013, 2014 Intel Corporation. All rights reserved.
+ * Copyright (C) 2012-2014 Intel Corporation. All rights reserved.
  *
  * Author: Yang, Bin <bin.yang@intel.com>
  * Author: Zhu, Lejun <lejun.zhu@linux.intel.com>
  */
 
+#include <linux/acpi.h>
+#include <linux/i2c.h>
 #include <linux/interrupt.h>
-#include <linux/regmap.h>
+#include <linux/module.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/intel_soc_pmic.h>
-
-#include "intel_soc_pmic_core.h"
+#include <linux/platform_data/x86/soc.h>
+#include <linux/pwm.h>
+#include <linux/regmap.h>
 
 #define CRYSTAL_COVE_MAX_REGISTER	0xC6
 
@@ -132,7 +135,20 @@ static const struct regmap_irq_chip crystal_cove_irq_chip = {
 	.mask_base = CRYSTAL_COVE_REG_MIRQLVL1,
 };
 
-struct intel_soc_pmic_config intel_soc_pmic_config_byt_crc = {
+/* PWM consumed by the Intel GFX */
+static struct pwm_lookup crc_pwm_lookup[] = {
+	PWM_LOOKUP("crystal_cove_pwm", 0, "0000:00:02.0", "pwm_pmic_backlight", 0, PWM_POLARITY_NORMAL),
+};
+
+struct intel_soc_pmic_config {
+	unsigned long irq_flags;
+	struct mfd_cell *cell_dev;
+	int n_cell_devs;
+	const struct regmap_config *regmap_config;
+	const struct regmap_irq_chip *irq_chip;
+};
+
+static const struct intel_soc_pmic_config intel_soc_pmic_config_byt_crc = {
 	.irq_flags = IRQF_TRIGGER_RISING,
 	.cell_dev = crystal_cove_byt_dev,
 	.n_cell_devs = ARRAY_SIZE(crystal_cove_byt_dev),
@@ -140,10 +156,145 @@ struct intel_soc_pmic_config intel_soc_pmic_config_byt_crc = {
 	.irq_chip = &crystal_cove_irq_chip,
 };
 
-struct intel_soc_pmic_config intel_soc_pmic_config_cht_crc = {
+static const struct intel_soc_pmic_config intel_soc_pmic_config_cht_crc = {
 	.irq_flags = IRQF_TRIGGER_RISING,
 	.cell_dev = crystal_cove_cht_dev,
 	.n_cell_devs = ARRAY_SIZE(crystal_cove_cht_dev),
 	.regmap_config = &crystal_cove_regmap_config,
 	.irq_chip = &crystal_cove_irq_chip,
 };
+
+static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c,
+				    const struct i2c_device_id *i2c_id)
+{
+	const struct intel_soc_pmic_config *config;
+	struct device *dev = &i2c->dev;
+	struct intel_soc_pmic *pmic;
+	int ret;
+
+	if (soc_intel_is_byt())
+		config = &intel_soc_pmic_config_byt_crc;
+	else
+		config = &intel_soc_pmic_config_cht_crc;
+
+	pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
+	if (!pmic)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, pmic);
+
+	pmic->regmap = devm_regmap_init_i2c(i2c, config->regmap_config);
+	if (IS_ERR(pmic->regmap))
+		return PTR_ERR(pmic->regmap);
+
+	pmic->irq = i2c->irq;
+
+	ret = regmap_add_irq_chip(pmic->regmap, pmic->irq,
+				  config->irq_flags | IRQF_ONESHOT,
+				  0, config->irq_chip,
+				  &pmic->irq_chip_data);
+	if (ret)
+		return ret;
+
+	ret = enable_irq_wake(pmic->irq);
+	if (ret)
+		dev_warn(dev, "Can't enable IRQ as wake source: %d\n", ret);
+
+	/* Add lookup table for crc-pwm */
+	pwm_add_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
+
+	/* To distuingish this domain from the GPIO/charger's irqchip domains */
+	irq_domain_update_bus_token(regmap_irq_get_domain(pmic->irq_chip_data),
+				    DOMAIN_BUS_NEXUS);
+
+	ret = mfd_add_devices(dev, -1, config->cell_dev,
+			      config->n_cell_devs, NULL, 0,
+			      regmap_irq_get_domain(pmic->irq_chip_data));
+	if (ret)
+		goto err_del_irq_chip;
+
+	return 0;
+
+err_del_irq_chip:
+	pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
+	regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
+	return ret;
+}
+
+static int intel_soc_pmic_i2c_remove(struct i2c_client *i2c)
+{
+	struct intel_soc_pmic *pmic = dev_get_drvdata(&i2c->dev);
+
+	regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
+
+	/* remove crc-pwm lookup table */
+	pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
+
+	mfd_remove_devices(&i2c->dev);
+
+	return 0;
+}
+
+static void intel_soc_pmic_shutdown(struct i2c_client *i2c)
+{
+	struct intel_soc_pmic *pmic = dev_get_drvdata(&i2c->dev);
+
+	disable_irq(pmic->irq);
+
+	return;
+}
+
+#if defined(CONFIG_PM_SLEEP)
+static int intel_soc_pmic_suspend(struct device *dev)
+{
+	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
+
+	disable_irq(pmic->irq);
+
+	return 0;
+}
+
+static int intel_soc_pmic_resume(struct device *dev)
+{
+	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
+
+	enable_irq(pmic->irq);
+
+	return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(intel_soc_pmic_pm_ops, intel_soc_pmic_suspend,
+			 intel_soc_pmic_resume);
+
+static const struct i2c_device_id intel_soc_pmic_i2c_id[] = {
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, intel_soc_pmic_i2c_id);
+
+#if defined(CONFIG_ACPI)
+static const struct acpi_device_id intel_soc_pmic_acpi_match[] = {
+	{ "INT33FD" },
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, intel_soc_pmic_acpi_match);
+#endif
+
+static struct i2c_driver intel_soc_pmic_i2c_driver = {
+	.driver = {
+		.name = "intel_soc_pmic_i2c",
+		.pm = &intel_soc_pmic_pm_ops,
+		.acpi_match_table = ACPI_PTR(intel_soc_pmic_acpi_match),
+	},
+	.probe = intel_soc_pmic_i2c_probe,
+	.remove = intel_soc_pmic_i2c_remove,
+	.id_table = intel_soc_pmic_i2c_id,
+	.shutdown = intel_soc_pmic_shutdown,
+};
+
+module_i2c_driver(intel_soc_pmic_i2c_driver);
+
+MODULE_DESCRIPTION("I2C driver for Intel SoC PMIC");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Yang, Bin <bin.yang@intel.com>");
+MODULE_AUTHOR("Zhu, Lejun <lejun.zhu@linux.intel.com>");