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Message-ID: <20221220132250.19383-2-Zeynep.Arslanbenzer@analog.com>
Date: Tue, 20 Dec 2022 16:22:45 +0300
From: Zeynep Arslanbenzer <Zeynep.Arslanbenzer@...log.com>
To: <lee@...nel.org>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <sre@...nel.org>,
<lgirdwood@...il.com>, <broonie@...nel.org>
CC: <Zeynep.Arslanbenzer@...log.com>, <Nurettin.Bolucu@...log.com>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-pm@...r.kernel.org>
Subject: [PATCH 1/6] drivers: mfd: add MAX77659 PMIC support
This patch adds MFD driver for MAX77659 to enable its sub
devices.
The MAX77659 is a multi-function devices. It includes
charger and regulator
Signed-off-by: Nurettin Bolucu <Nurettin.Bolucu@...log.com>
Signed-off-by: Zeynep Arslanbenzer <Zeynep.Arslanbenzer@...log.com>
---
MAINTAINERS | 8 ++
drivers/mfd/Kconfig | 14 +++
drivers/mfd/Makefile | 1 +
drivers/mfd/max77659.c | 188 +++++++++++++++++++++++++++++++++++
include/linux/mfd/max77659.h | 60 +++++++++++
5 files changed, 271 insertions(+)
create mode 100644 drivers/mfd/max77659.c
create mode 100644 include/linux/mfd/max77659.h
diff --git a/MAINTAINERS b/MAINTAINERS
index a608f19da3a9..45a8a471c7c0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12640,6 +12640,14 @@ F: drivers/power/supply/max77650-charger.c
F: drivers/regulator/max77650-regulator.c
F: include/linux/mfd/max77650.h
+ANALOG DEVICES MAX77659 PMIC MFD DRIVER
+M: Nurettin Bolucu <Nurettin.Bolucu@...log.com>
+M: Zeynep Arslanbenzer <Zeynep.Arslanbenzer@...log.com>
+L: linux-kernel@...r.kernel.org
+S: Maintained
+F: drivers/mfd/max77659.c
+F: include/linux/mfd/max77659.h
+
MAXIM MAX77714 PMIC MFD DRIVER
M: Luca Ceresoli <luca@...aceresoli.net>
S: Maintained
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 8b93856de432..4d5e446edfa5 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -821,6 +821,20 @@ config MFD_MAX77650
the following functionalities of the device: GPIO, regulator,
charger, LED, onkey.
+config MFD_MAX77659
+ tristate "Analog Devices MAX77659 PMIC Support"
+ depends on I2C
+ depends on OF
+ select MFD_CORE
+ select REGMAP_I2C
+ select REGMAP_IRQ
+ help
+ Say Y here to add support for Analog Devices MAX77659 Power
+ Management IC. This is the core multifunction
+ driver for interacting with the device. Additional drivers can be
+ enabled in order to use the following functionalities of the device:
+ regulator, charger.
+
config MFD_MAX77686
tristate "Maxim Semiconductor MAX77686/802 PMIC Support"
depends on I2C
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 7ed3ef4a698c..f7b39bf4aacb 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -163,6 +163,7 @@ obj-$(CONFIG_MFD_DA9150) += da9150-core.o
obj-$(CONFIG_MFD_MAX14577) += max14577.o
obj-$(CONFIG_MFD_MAX77620) += max77620.o
obj-$(CONFIG_MFD_MAX77650) += max77650.o
+obj-$(CONFIG_MFD_MAX77659) += max77659.o
obj-$(CONFIG_MFD_MAX77686) += max77686.o
obj-$(CONFIG_MFD_MAX77693) += max77693.o
obj-$(CONFIG_MFD_MAX77714) += max77714.o
diff --git a/drivers/mfd/max77659.c b/drivers/mfd/max77659.c
new file mode 100644
index 000000000000..8401aea20e8c
--- /dev/null
+++ b/drivers/mfd/max77659.c
@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/i2c.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/max77659.h>
+#include <linux/mod_devicetable.h>
+#include <linux/regmap.h>
+
+static const struct regmap_config max77659_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static const struct regmap_irq max77659_glbl0_irqs[] = {
+ { .mask = MAX77659_BIT_INT_GLBL0_GPIO0_F, },
+ { .mask = MAX77659_BIT_INT_GLBL0_GPIO0_R, },
+ { .mask = MAX77659_BIT_INT_GLBL0_EN_F, },
+ { .mask = MAX77659_BIT_INT_GLBL0_EN_R, },
+ { .mask = MAX77659_BIT_INT_GLBL0_TJAL1_R, },
+ { .mask = MAX77659_BIT_INT_GLBL0_TJAL2_R, },
+ { .mask = MAX77659_BIT_INT_GLBL0_DOD0_R, },
+};
+
+static const struct regmap_irq_chip max77659_glbl0_irq_chip = {
+ .name = "max77659_glbl0",
+ .status_base = MAX77659_REG_INT_GLBL0,
+ .mask_base = MAX77659_REG_INTM_GLBL0,
+ .num_regs = 1,
+ .irqs = max77659_glbl0_irqs,
+ .num_irqs = ARRAY_SIZE(max77659_glbl0_irqs),
+};
+
+static const struct regmap_irq max77659_glbl1_irqs[] = {
+ { .mask = MAX77659_BIT_INT_GLBL1_GPI1_F, },
+ { .mask = MAX77659_BIT_INT_GLBL1_GPI1_R, },
+ { .mask = MAX77659_BIT_INT_GLBL1_SBB_TO, },
+ { .mask = MAX77659_BIT_INT_GLBL1_LDO0_F, },
+};
+
+static const struct regmap_irq_chip max77659_glbl1_irq_chip = {
+ .name = "max77659_glbl1",
+ .status_base = MAX77659_REG_INT_GLBL1,
+ .mask_base = MAX77659_REG_INTM_GLBL1,
+ .num_regs = 1,
+ .irqs = max77659_glbl1_irqs,
+ .num_irqs = ARRAY_SIZE(max77659_glbl1_irqs),
+};
+
+static const struct regmap_irq max77659_chg_irqs[] = {
+ { .mask = MAX77659_BIT_INT_THM, },
+ { .mask = MAX77659_BIT_INT_CHG, },
+ { .mask = MAX77659_BIT_INT_CHGIN, },
+ { .mask = MAX77659_BIT_INT_TJ_REG, },
+ { .mask = MAX77659_BIT_INT_SYS_CTRL, },
+};
+
+static const struct regmap_irq_chip max77659_chg_irq_chip = {
+ .name = "max77659_chg",
+ .status_base = MAX77659_REG_INT_CHG,
+ .mask_base = MAX77659_REG_INT_M_CHG,
+ .num_regs = 1,
+ .irqs = max77659_chg_irqs,
+ .num_irqs = ARRAY_SIZE(max77659_chg_irqs),
+};
+
+static const struct mfd_cell max77659_devs[] = {
+ MFD_CELL_OF(MAX77659_REGULATOR_NAME, NULL, NULL, 0, 0, "adi,max77659-regulator"),
+ MFD_CELL_OF(MAX77659_CHARGER_NAME, NULL, NULL, 0, 0, "adi,max77659-charger"),
+};
+
+static int max77659_pmic_irq_init(struct max77659_dev *me)
+{
+ struct device *dev = me->dev;
+ int ret;
+
+ ret = regmap_write(me->regmap, MAX77659_REG_INTM_GLBL0, MAX77659_INT_GLBL0_MASK);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Unable to write Global0 Interrupt Masking register\n");
+
+ ret = regmap_write(me->regmap, MAX77659_REG_INTM_GLBL1, MAX77659_INT_GLBL1_MASK);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Unable to write Global1 Interrupt Masking register\n");
+
+ ret = devm_regmap_add_irq_chip(dev, me->regmap, me->irq,
+ IRQF_ONESHOT | IRQF_SHARED, 0,
+ &max77659_glbl0_irq_chip, &me->irqc_glbl0);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to add global0 IRQ chip\n");
+
+ ret = devm_regmap_add_irq_chip(dev, me->regmap, me->irq,
+ IRQF_ONESHOT | IRQF_SHARED, 0,
+ &max77659_glbl1_irq_chip, &me->irqc_glbl1);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to add global1 IRQ chip\n");
+
+ return devm_regmap_add_irq_chip(dev, me->regmap, me->irq,
+ IRQF_ONESHOT | IRQF_SHARED, 0,
+ &max77659_chg_irq_chip, &me->irqc_chg);
+}
+
+static int max77659_pmic_setup(struct max77659_dev *me)
+{
+ struct device *dev = me->dev;
+ unsigned int val;
+ int ret;
+
+ ret = max77659_pmic_irq_init(me);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "Failed to initialize IRQ\n");
+
+ ret = regmap_read(me->regmap, MAX77659_REG_INT_GLBL0, &val);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Unable to read Global0 Interrupt Status register\n");
+
+ ret = regmap_read(me->regmap, MAX77659_REG_INT_GLBL1, &val);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Unable to read Global1 Interrupt Status register\n");
+
+ ret = regmap_read(me->regmap, MAX77659_REG_INT_CHG, &val);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Unable to read Charger Interrupt Status register\n");
+ ret = device_init_wakeup(dev, true);
+ if (ret)
+ return dev_err_probe(dev, ret, "Unable to init wakeup\n");
+
+ ret = devm_mfd_add_devices(dev, -1, max77659_devs, ARRAY_SIZE(max77659_devs),
+ NULL, 0, NULL);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to add sub-devices\n");
+
+ enable_irq_wake(me->irq);
+
+ return 0;
+}
+
+static int max77659_i2c_probe(struct i2c_client *client)
+{
+ struct max77659_dev *me;
+
+ me = devm_kzalloc(&client->dev, sizeof(*me), GFP_KERNEL);
+ if (!me)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, me);
+ me->dev = &client->dev;
+ me->irq = client->irq;
+
+ me->regmap = devm_regmap_init_i2c(client, &max77659_regmap_config);
+
+ if (IS_ERR(me->regmap))
+ return dev_err_probe(&client->dev, PTR_ERR(me->regmap),
+ "Failed to allocate register map\n");
+
+ return max77659_pmic_setup(me);
+}
+
+static const struct of_device_id max77659_of_id[] = {
+ { .compatible = "adi,max77659" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, max77659_of_id);
+
+static const struct i2c_device_id max77659_i2c_id[] = {
+ { MAX77659_NAME, 0 },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(i2c, max77659_i2c_id);
+
+static struct i2c_driver max77659_i2c_driver = {
+ .driver = {
+ .name = MAX77659_NAME,
+ .of_match_table = of_match_ptr(max77659_of_id),
+ },
+ .probe_new = max77659_i2c_probe,
+ .id_table = max77659_i2c_id,
+};
+
+module_i2c_driver(max77659_i2c_driver);
+
+MODULE_DESCRIPTION("max77659 MFD Driver");
+MODULE_AUTHOR("Nurettin.Bolucu@...log.com, Zeynep.Arslanbenzer@...log.com");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.0");
diff --git a/include/linux/mfd/max77659.h b/include/linux/mfd/max77659.h
new file mode 100644
index 000000000000..ef781e6e54c2
--- /dev/null
+++ b/include/linux/mfd/max77659.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __MAX77659_MFD_H__
+#define __MAX77659_MFD_H__
+
+#include <linux/bits.h>
+
+#define MAX77659_NAME "max77659"
+
+#define MAX77659_REGULATOR_NAME MAX77659_NAME "-regulator"
+#define MAX77659_CHARGER_NAME MAX77659_NAME "-charger"
+
+#define MAX77659_REG_INT_GLBL0 0x00
+#define MAX77659_REG_INT_CHG 0x01
+#define MAX77659_REG_INT_GLBL1 0x04
+#define MAX77659_REG_INT_M_CHG 0x07
+#define MAX77659_REG_INTM_GLBL1 0x08
+#define MAX77659_REG_INTM_GLBL0 0x09
+
+#define MAX77659_INT_GLBL0_MASK 0xFF
+#define MAX77659_INT_GLBL1_MASK 0x33
+
+#define MAX77659_BIT_INT_GLBL0_GPIO0_F BIT(0)
+#define MAX77659_BIT_INT_GLBL0_GPIO0_R BIT(1)
+#define MAX77659_BIT_INT_GLBL0_EN_F BIT(2)
+#define MAX77659_BIT_INT_GLBL0_EN_R BIT(3)
+#define MAX77659_BIT_INT_GLBL0_TJAL1_R BIT(4)
+#define MAX77659_BIT_INT_GLBL0_TJAL2_R BIT(5)
+#define MAX77659_BIT_INT_GLBL0_DOD0_R BIT(7)
+
+#define MAX77659_BIT_INT_GLBL1_GPI1_F BIT(0)
+#define MAX77659_BIT_INT_GLBL1_GPI1_R BIT(1)
+#define MAX77659_BIT_INT_GLBL1_SBB_TO BIT(4)
+#define MAX77659_BIT_INT_GLBL1_LDO0_F BIT(5)
+
+#define MAX77659_BIT_INT_THM BIT(0)
+#define MAX77659_BIT_INT_CHG BIT(1)
+#define MAX77659_BIT_INT_CHGIN BIT(2)
+#define MAX77659_BIT_INT_TJ_REG BIT(3)
+#define MAX77659_BIT_INT_SYS_CTRL BIT(4)
+
+enum {
+ MAX77659_DEV_PMIC,
+ MAX77659_DEV_CHARGER,
+ MAX77659_DEV_REGULATOR,
+ MAX77659_NUM_DEVS,
+};
+
+struct max77659_dev {
+ struct device *dev;
+
+ int irq;
+ struct regmap_irq_chip_data *irqc_glbl0;
+ struct regmap_irq_chip_data *irqc_glbl1;
+ struct regmap_irq_chip_data *irqc_chg;
+
+ struct regmap *regmap;
+};
+
+#endif /* __MAX77659_MFD_H__ */
--
2.25.1
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