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path: root/drivers/mfd/da9062-core.c
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Diffstat (limited to 'drivers/mfd/da9062-core.c')
-rw-r--r--drivers/mfd/da9062-core.c309
1 files changed, 168 insertions, 141 deletions
diff --git a/drivers/mfd/da9062-core.c b/drivers/mfd/da9062-core.c
index 9f6105906c09..637c5f47a4b0 100644
--- a/drivers/mfd/da9062-core.c
+++ b/drivers/mfd/da9062-core.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Core, IRQ and I2C device driver for DA9061 and DA9062 PMICs
* Copyright (C) 2015-2017 Dialog Semiconductor
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/kernel.h>
@@ -18,6 +9,7 @@
#include <linux/init.h>
#include <linux/device.h>
#include <linux/interrupt.h>
+#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/irq.h>
#include <linux/mfd/core.h>
@@ -30,7 +22,10 @@
#define DA9062_REG_EVENT_B_OFFSET 1
#define DA9062_REG_EVENT_C_OFFSET 2
-static struct regmap_irq da9061_irqs[] = {
+#define DA9062_IRQ_LOW 0
+#define DA9062_IRQ_HIGH 1
+
+static const struct regmap_irq da9061_irqs[] = {
/* EVENT A */
[DA9061_IRQ_ONKEY] = {
.reg_offset = DA9062_REG_EVENT_A_OFFSET,
@@ -84,7 +79,7 @@ static struct regmap_irq da9061_irqs[] = {
},
};
-static struct regmap_irq_chip da9061_irq_chip = {
+static const struct regmap_irq_chip da9061_irq_chip = {
.name = "da9061-irq",
.irqs = da9061_irqs,
.num_irqs = DA9061_NUM_IRQ,
@@ -94,7 +89,7 @@ static struct regmap_irq_chip da9061_irq_chip = {
.ack_base = DA9062AA_EVENT_A,
};
-static struct regmap_irq da9062_irqs[] = {
+static const struct regmap_irq da9062_irqs[] = {
/* EVENT A */
[DA9062_IRQ_ONKEY] = {
.reg_offset = DA9062_REG_EVENT_A_OFFSET,
@@ -156,7 +151,7 @@ static struct regmap_irq da9062_irqs[] = {
},
};
-static struct regmap_irq_chip da9062_irq_chip = {
+static const struct regmap_irq_chip da9062_irq_chip = {
.name = "da9062-irq",
.irqs = da9062_irqs,
.num_irqs = DA9062_NUM_IRQ,
@@ -166,117 +161,105 @@ static struct regmap_irq_chip da9062_irq_chip = {
.ack_base = DA9062AA_EVENT_A,
};
-static struct resource da9061_core_resources[] = {
+static const struct resource da9061_core_resources[] = {
DEFINE_RES_IRQ_NAMED(DA9061_IRQ_VDD_WARN, "VDD_WARN"),
};
-static struct resource da9061_regulators_resources[] = {
+static const struct resource da9061_regulators_resources[] = {
DEFINE_RES_IRQ_NAMED(DA9061_IRQ_LDO_LIM, "LDO_LIM"),
};
-static struct resource da9061_thermal_resources[] = {
+static const struct resource da9061_thermal_resources[] = {
DEFINE_RES_IRQ_NAMED(DA9061_IRQ_TEMP, "THERMAL"),
};
-static struct resource da9061_wdt_resources[] = {
+static const struct resource da9061_wdt_resources[] = {
DEFINE_RES_IRQ_NAMED(DA9061_IRQ_WDG_WARN, "WD_WARN"),
};
-static struct resource da9061_onkey_resources[] = {
+static const struct resource da9061_onkey_resources[] = {
DEFINE_RES_IRQ_NAMED(DA9061_IRQ_ONKEY, "ONKEY"),
};
-static const struct mfd_cell da9061_devs[] = {
- {
- .name = "da9061-core",
- .num_resources = ARRAY_SIZE(da9061_core_resources),
- .resources = da9061_core_resources,
- },
- {
- .name = "da9062-regulators",
- .num_resources = ARRAY_SIZE(da9061_regulators_resources),
- .resources = da9061_regulators_resources,
- },
- {
- .name = "da9061-watchdog",
- .num_resources = ARRAY_SIZE(da9061_wdt_resources),
- .resources = da9061_wdt_resources,
- .of_compatible = "dlg,da9061-watchdog",
- },
- {
- .name = "da9061-thermal",
- .num_resources = ARRAY_SIZE(da9061_thermal_resources),
- .resources = da9061_thermal_resources,
- .of_compatible = "dlg,da9061-thermal",
- },
- {
- .name = "da9061-onkey",
- .num_resources = ARRAY_SIZE(da9061_onkey_resources),
- .resources = da9061_onkey_resources,
- .of_compatible = "dlg,da9061-onkey",
- },
+static const struct mfd_cell da9061_devs_irq[] = {
+ MFD_CELL_OF("da9061-core", da9061_core_resources, NULL, 0, 0,
+ NULL),
+ MFD_CELL_OF("da9062-regulators", da9061_regulators_resources, NULL, 0, 0,
+ NULL),
+ MFD_CELL_OF("da9061-watchdog", da9061_wdt_resources, NULL, 0, 0,
+ "dlg,da9061-watchdog"),
+ MFD_CELL_OF("da9061-thermal", da9061_thermal_resources, NULL, 0, 0,
+ "dlg,da9061-thermal"),
+ MFD_CELL_OF("da9061-onkey", da9061_onkey_resources, NULL, 0, 0,
+ "dlg,da9061-onkey"),
};
-static struct resource da9062_core_resources[] = {
+static const struct mfd_cell da9061_devs_noirq[] = {
+ MFD_CELL_OF("da9061-core", NULL, NULL, 0, 0, NULL),
+ MFD_CELL_OF("da9062-regulators", NULL, NULL, 0, 0, NULL),
+ MFD_CELL_OF("da9061-watchdog", NULL, NULL, 0, 0, "dlg,da9061-watchdog"),
+ MFD_CELL_OF("da9061-thermal", NULL, NULL, 0, 0, "dlg,da9061-thermal"),
+ MFD_CELL_OF("da9061-onkey", NULL, NULL, 0, 0, "dlg,da9061-onkey"),
+};
+
+static const struct resource da9062_core_resources[] = {
DEFINE_RES_NAMED(DA9062_IRQ_VDD_WARN, 1, "VDD_WARN", IORESOURCE_IRQ),
};
-static struct resource da9062_regulators_resources[] = {
+static const struct resource da9062_regulators_resources[] = {
DEFINE_RES_NAMED(DA9062_IRQ_LDO_LIM, 1, "LDO_LIM", IORESOURCE_IRQ),
};
-static struct resource da9062_thermal_resources[] = {
+static const struct resource da9062_thermal_resources[] = {
DEFINE_RES_NAMED(DA9062_IRQ_TEMP, 1, "THERMAL", IORESOURCE_IRQ),
};
-static struct resource da9062_wdt_resources[] = {
+static const struct resource da9062_wdt_resources[] = {
DEFINE_RES_NAMED(DA9062_IRQ_WDG_WARN, 1, "WD_WARN", IORESOURCE_IRQ),
};
-static struct resource da9062_rtc_resources[] = {
+static const struct resource da9062_rtc_resources[] = {
DEFINE_RES_NAMED(DA9062_IRQ_ALARM, 1, "ALARM", IORESOURCE_IRQ),
DEFINE_RES_NAMED(DA9062_IRQ_TICK, 1, "TICK", IORESOURCE_IRQ),
};
-static struct resource da9062_onkey_resources[] = {
+static const struct resource da9062_onkey_resources[] = {
DEFINE_RES_NAMED(DA9062_IRQ_ONKEY, 1, "ONKEY", IORESOURCE_IRQ),
};
-static const struct mfd_cell da9062_devs[] = {
- {
- .name = "da9062-core",
- .num_resources = ARRAY_SIZE(da9062_core_resources),
- .resources = da9062_core_resources,
- },
- {
- .name = "da9062-regulators",
- .num_resources = ARRAY_SIZE(da9062_regulators_resources),
- .resources = da9062_regulators_resources,
- },
- {
- .name = "da9062-watchdog",
- .num_resources = ARRAY_SIZE(da9062_wdt_resources),
- .resources = da9062_wdt_resources,
- .of_compatible = "dlg,da9062-wdt",
- },
- {
- .name = "da9062-thermal",
- .num_resources = ARRAY_SIZE(da9062_thermal_resources),
- .resources = da9062_thermal_resources,
- .of_compatible = "dlg,da9062-thermal",
- },
- {
- .name = "da9062-rtc",
- .num_resources = ARRAY_SIZE(da9062_rtc_resources),
- .resources = da9062_rtc_resources,
- .of_compatible = "dlg,da9062-rtc",
- },
- {
- .name = "da9062-onkey",
- .num_resources = ARRAY_SIZE(da9062_onkey_resources),
- .resources = da9062_onkey_resources,
- .of_compatible = "dlg,da9062-onkey",
- },
+static const struct resource da9062_gpio_resources[] = {
+ DEFINE_RES_NAMED(DA9062_IRQ_GPI0, 1, "GPI0", IORESOURCE_IRQ),
+ DEFINE_RES_NAMED(DA9062_IRQ_GPI1, 1, "GPI1", IORESOURCE_IRQ),
+ DEFINE_RES_NAMED(DA9062_IRQ_GPI2, 1, "GPI2", IORESOURCE_IRQ),
+ DEFINE_RES_NAMED(DA9062_IRQ_GPI3, 1, "GPI3", IORESOURCE_IRQ),
+ DEFINE_RES_NAMED(DA9062_IRQ_GPI4, 1, "GPI4", IORESOURCE_IRQ),
+};
+
+static const struct mfd_cell da9062_devs_irq[] = {
+ MFD_CELL_OF("da9062-core", da9062_core_resources, NULL, 0, 0,
+ NULL),
+ MFD_CELL_OF("da9062-regulators", da9062_regulators_resources, NULL, 0, 0,
+ NULL),
+ MFD_CELL_OF("da9062-watchdog", da9062_wdt_resources, NULL, 0, 0,
+ "dlg,da9062-watchdog"),
+ MFD_CELL_OF("da9062-thermal", da9062_thermal_resources, NULL, 0, 0,
+ "dlg,da9062-thermal"),
+ MFD_CELL_OF("da9062-rtc", da9062_rtc_resources, NULL, 0, 0,
+ "dlg,da9062-rtc"),
+ MFD_CELL_OF("da9062-onkey", da9062_onkey_resources, NULL, 0, 0,
+ "dlg,da9062-onkey"),
+ MFD_CELL_OF("da9062-gpio", da9062_gpio_resources, NULL, 0, 0,
+ "dlg,da9062-gpio"),
+};
+
+static const struct mfd_cell da9062_devs_noirq[] = {
+ MFD_CELL_OF("da9062-core", NULL, NULL, 0, 0, NULL),
+ MFD_CELL_OF("da9062-regulators", NULL, NULL, 0, 0, NULL),
+ MFD_CELL_OF("da9062-watchdog", NULL, NULL, 0, 0, "dlg,da9062-watchdog"),
+ MFD_CELL_OF("da9062-thermal", NULL, NULL, 0, 0, "dlg,da9062-thermal"),
+ MFD_CELL_OF("da9062-rtc", NULL, NULL, 0, 0, "dlg,da9062-rtc"),
+ MFD_CELL_OF("da9062-onkey", NULL, NULL, 0, 0, "dlg,da9062-onkey"),
+ MFD_CELL_OF("da9062-gpio", NULL, NULL, 0, 0, "dlg,da9062-gpio"),
};
static int da9062_clear_fault_log(struct da9062 *chip)
@@ -364,6 +347,33 @@ static int da9062_get_device_type(struct da9062 *chip)
return ret;
}
+static u32 da9062_configure_irq_type(struct da9062 *chip, int irq, u32 *trigger)
+{
+ u32 irq_type = 0;
+ struct irq_data *irq_data = irq_get_irq_data(irq);
+
+ if (!irq_data) {
+ dev_err(chip->dev, "Invalid IRQ: %d\n", irq);
+ return -EINVAL;
+ }
+ *trigger = irqd_get_trigger_type(irq_data);
+
+ switch (*trigger) {
+ case IRQ_TYPE_LEVEL_HIGH:
+ irq_type = DA9062_IRQ_HIGH;
+ break;
+ case IRQ_TYPE_LEVEL_LOW:
+ irq_type = DA9062_IRQ_LOW;
+ break;
+ default:
+ dev_warn(chip->dev, "Unsupported IRQ type: %d\n", *trigger);
+ return -EINVAL;
+ }
+ return regmap_update_bits(chip->regmap, DA9062AA_CONFIG_A,
+ DA9062AA_IRQ_TYPE_MASK,
+ irq_type << DA9062AA_IRQ_TYPE_SHIFT);
+}
+
static const struct regmap_range da9061_aa_readable_ranges[] = {
regmap_reg_range(DA9062AA_PAGE_CON, DA9062AA_STATUS_B),
regmap_reg_range(DA9062AA_STATUS_D, DA9062AA_EVENT_C),
@@ -383,6 +393,7 @@ static const struct regmap_range da9061_aa_readable_ranges[] = {
regmap_reg_range(DA9062AA_VBUCK1_A, DA9062AA_VBUCK4_A),
regmap_reg_range(DA9062AA_VBUCK3_A, DA9062AA_VBUCK3_A),
regmap_reg_range(DA9062AA_VLDO1_A, DA9062AA_VLDO4_A),
+ regmap_reg_range(DA9062AA_CONFIG_A, DA9062AA_CONFIG_A),
regmap_reg_range(DA9062AA_VBUCK1_B, DA9062AA_VBUCK4_B),
regmap_reg_range(DA9062AA_VBUCK3_B, DA9062AA_VBUCK3_B),
regmap_reg_range(DA9062AA_VLDO1_B, DA9062AA_VLDO4_B),
@@ -412,9 +423,11 @@ static const struct regmap_range da9061_aa_writeable_ranges[] = {
regmap_reg_range(DA9062AA_VBUCK1_A, DA9062AA_VBUCK4_A),
regmap_reg_range(DA9062AA_VBUCK3_A, DA9062AA_VBUCK3_A),
regmap_reg_range(DA9062AA_VLDO1_A, DA9062AA_VLDO4_A),
+ regmap_reg_range(DA9062AA_CONFIG_A, DA9062AA_CONFIG_A),
regmap_reg_range(DA9062AA_VBUCK1_B, DA9062AA_VBUCK4_B),
regmap_reg_range(DA9062AA_VBUCK3_B, DA9062AA_VBUCK3_B),
regmap_reg_range(DA9062AA_VLDO1_B, DA9062AA_VLDO4_B),
+ regmap_reg_range(DA9062AA_CONFIG_J, DA9062AA_CONFIG_J),
regmap_reg_range(DA9062AA_GP_ID_0, DA9062AA_GP_ID_19),
};
@@ -457,13 +470,13 @@ static const struct regmap_range_cfg da9061_range_cfg[] = {
}
};
-static struct regmap_config da9061_regmap_config = {
+static const struct regmap_config da9061_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.ranges = da9061_range_cfg,
.num_ranges = ARRAY_SIZE(da9061_range_cfg),
.max_register = DA9062AA_CONFIG_ID,
- .cache_type = REGCACHE_RBTREE,
+ .cache_type = REGCACHE_MAPLE,
.rd_table = &da9061_aa_readable_table,
.wr_table = &da9061_aa_writeable_table,
.volatile_table = &da9061_aa_volatile_table,
@@ -518,6 +531,7 @@ static const struct regmap_range da9062_aa_writeable_ranges[] = {
regmap_reg_range(DA9062AA_VBUCK3_B, DA9062AA_VBUCK3_B),
regmap_reg_range(DA9062AA_VLDO1_B, DA9062AA_VLDO4_B),
regmap_reg_range(DA9062AA_BBAT_CONT, DA9062AA_BBAT_CONT),
+ regmap_reg_range(DA9062AA_CONFIG_J, DA9062AA_CONFIG_J),
regmap_reg_range(DA9062AA_GP_ID_0, DA9062AA_GP_ID_19),
};
@@ -562,70 +576,48 @@ static const struct regmap_range_cfg da9062_range_cfg[] = {
}
};
-static struct regmap_config da9062_regmap_config = {
+static const struct regmap_config da9062_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.ranges = da9062_range_cfg,
.num_ranges = ARRAY_SIZE(da9062_range_cfg),
.max_register = DA9062AA_CONFIG_ID,
- .cache_type = REGCACHE_RBTREE,
+ .cache_type = REGCACHE_MAPLE,
.rd_table = &da9062_aa_readable_table,
.wr_table = &da9062_aa_writeable_table,
.volatile_table = &da9062_aa_volatile_table,
};
-static const struct of_device_id da9062_dt_ids[] = {
- { .compatible = "dlg,da9061", .data = (void *)COMPAT_TYPE_DA9061, },
- { .compatible = "dlg,da9062", .data = (void *)COMPAT_TYPE_DA9062, },
- { }
-};
-MODULE_DEVICE_TABLE(of, da9062_dt_ids);
-
-static int da9062_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
+static int da9062_i2c_probe(struct i2c_client *i2c)
{
struct da9062 *chip;
- const struct of_device_id *match;
- unsigned int irq_base;
+ unsigned int irq_base = 0;
const struct mfd_cell *cell;
const struct regmap_irq_chip *irq_chip;
const struct regmap_config *config;
int cell_num;
+ u32 trigger_type = 0;
int ret;
chip = devm_kzalloc(&i2c->dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
return -ENOMEM;
- if (i2c->dev.of_node) {
- match = of_match_node(da9062_dt_ids, i2c->dev.of_node);
- if (!match)
- return -EINVAL;
-
- chip->chip_type = (uintptr_t)match->data;
- } else {
- chip->chip_type = id->driver_data;
- }
+ chip->chip_type = (uintptr_t)i2c_get_match_data(i2c);
i2c_set_clientdata(i2c, chip);
chip->dev = &i2c->dev;
- if (!i2c->irq) {
- dev_err(chip->dev, "No IRQ configured\n");
- return -EINVAL;
- }
-
+ /* Start with a base configuration without IRQ */
switch (chip->chip_type) {
case COMPAT_TYPE_DA9061:
- cell = da9061_devs;
- cell_num = ARRAY_SIZE(da9061_devs);
- irq_chip = &da9061_irq_chip;
+ cell = da9061_devs_noirq;
+ cell_num = ARRAY_SIZE(da9061_devs_noirq);
config = &da9061_regmap_config;
break;
case COMPAT_TYPE_DA9062:
- cell = da9062_devs;
- cell_num = ARRAY_SIZE(da9062_devs);
- irq_chip = &da9062_irq_chip;
+ cell = da9062_devs_noirq;
+ cell_num = ARRAY_SIZE(da9062_devs_noirq);
config = &da9062_regmap_config;
break;
default:
@@ -641,6 +633,17 @@ static int da9062_i2c_probe(struct i2c_client *i2c,
return ret;
}
+ /* If SMBus is not available and only I2C is possible, enter I2C mode */
+ if (i2c_check_functionality(i2c->adapter, I2C_FUNC_I2C)) {
+ dev_info(chip->dev, "Entering I2C mode!\n");
+ ret = regmap_clear_bits(chip->regmap, DA9062AA_CONFIG_J,
+ DA9062AA_TWOWIRE_TO_MASK);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to set Two-Wire Bus Mode.\n");
+ return ret;
+ }
+ }
+
ret = da9062_clear_fault_log(chip);
if (ret < 0)
dev_warn(chip->dev, "Cannot clear fault log\n");
@@ -649,53 +652,77 @@ static int da9062_i2c_probe(struct i2c_client *i2c,
if (ret)
return ret;
- ret = regmap_add_irq_chip(chip->regmap, i2c->irq,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED,
- -1, irq_chip,
- &chip->regmap_irq);
- if (ret) {
- dev_err(chip->dev, "Failed to request IRQ %d: %d\n",
- i2c->irq, ret);
- return ret;
+ /* If IRQ is available, reconfigure it accordingly */
+ if (i2c->irq) {
+ if (chip->chip_type == COMPAT_TYPE_DA9061) {
+ cell = da9061_devs_irq;
+ cell_num = ARRAY_SIZE(da9061_devs_irq);
+ irq_chip = &da9061_irq_chip;
+ } else {
+ cell = da9062_devs_irq;
+ cell_num = ARRAY_SIZE(da9062_devs_irq);
+ irq_chip = &da9062_irq_chip;
+ }
+
+ ret = da9062_configure_irq_type(chip, i2c->irq, &trigger_type);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to configure IRQ type\n");
+ return ret;
+ }
+
+ ret = regmap_add_irq_chip(chip->regmap, i2c->irq,
+ trigger_type | IRQF_SHARED | IRQF_ONESHOT,
+ -1, irq_chip, &chip->regmap_irq);
+ if (ret) {
+ dev_err(chip->dev, "Failed to request IRQ %d: %d\n",
+ i2c->irq, ret);
+ return ret;
+ }
+
+ irq_base = regmap_irq_chip_get_base(chip->regmap_irq);
}
- irq_base = regmap_irq_chip_get_base(chip->regmap_irq);
-
ret = mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, cell,
cell_num, NULL, irq_base,
NULL);
if (ret) {
dev_err(chip->dev, "Cannot register child devices\n");
- regmap_del_irq_chip(i2c->irq, chip->regmap_irq);
+ if (i2c->irq)
+ regmap_del_irq_chip(i2c->irq, chip->regmap_irq);
return ret;
}
return ret;
}
-static int da9062_i2c_remove(struct i2c_client *i2c)
+static void da9062_i2c_remove(struct i2c_client *i2c)
{
struct da9062 *chip = i2c_get_clientdata(i2c);
mfd_remove_devices(chip->dev);
regmap_del_irq_chip(i2c->irq, chip->regmap_irq);
-
- return 0;
}
+static const struct of_device_id da9062_dt_ids[] = {
+ { .compatible = "dlg,da9061", .data = (void *)COMPAT_TYPE_DA9061 },
+ { .compatible = "dlg,da9062", .data = (void *)COMPAT_TYPE_DA9062 },
+ { }
+};
+MODULE_DEVICE_TABLE(of, da9062_dt_ids);
+
static const struct i2c_device_id da9062_i2c_id[] = {
{ "da9061", COMPAT_TYPE_DA9061 },
{ "da9062", COMPAT_TYPE_DA9062 },
- { },
+ { }
};
MODULE_DEVICE_TABLE(i2c, da9062_i2c_id);
static struct i2c_driver da9062_i2c_driver = {
.driver = {
.name = "da9062",
- .of_match_table = of_match_ptr(da9062_dt_ids),
+ .of_match_table = da9062_dt_ids,
},
- .probe = da9062_i2c_probe,
+ .probe = da9062_i2c_probe,
.remove = da9062_i2c_remove,
.id_table = da9062_i2c_id,
};