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path: root/drivers/mfd/tps65218.c
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Diffstat (limited to 'drivers/mfd/tps65218.c')
-rw-r--r--drivers/mfd/tps65218.c145
1 files changed, 99 insertions, 46 deletions
diff --git a/drivers/mfd/tps65218.c b/drivers/mfd/tps65218.c
index 13834a0d2817..4f3e632f726f 100644
--- a/drivers/mfd/tps65218.c
+++ b/drivers/mfd/tps65218.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Driver for TPS65218 Integrated power management chipsets
*
- * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether expressed or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License version 2 for more details.
+ * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com/
*/
#include <linux/kernel.h>
@@ -23,7 +15,6 @@
#include <linux/regmap.h>
#include <linux/err.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
@@ -48,7 +39,7 @@ static const struct mfd_cell tps65218_cells[] = {
/**
* tps65218_reg_write: Write a single tps65218 register.
*
- * @tps65218: Device to write to.
+ * @tps: Device to write to.
* @reg: Register to write to.
* @val: Value to write.
* @level: Password protected level
@@ -79,7 +70,7 @@ EXPORT_SYMBOL_GPL(tps65218_reg_write);
/**
* tps65218_update_bits: Modify bits w.r.t mask, val and level.
*
- * @tps65218: Device to write to.
+ * @tps: Device to write to.
* @reg: Register to read-write to.
* @mask: Mask.
* @val: Value to write.
@@ -136,7 +127,7 @@ static const struct regmap_access_table tps65218_volatile_table = {
static const struct regmap_config tps65218_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
- .cache_type = REGCACHE_RBTREE,
+ .cache_type = REGCACHE_MAPLE,
.volatile_table = &tps65218_volatile_table,
};
@@ -195,7 +186,7 @@ static const struct regmap_irq tps65218_irqs[] = {
},
};
-static struct regmap_irq_chip tps65218_irq_chip = {
+static const struct regmap_irq_chip tps65218_irq_chip = {
.name = "tps65218",
.irqs = tps65218_irqs,
.num_irqs = ARRAY_SIZE(tps65218_irqs),
@@ -211,21 +202,89 @@ static const struct of_device_id of_tps65218_match_table[] = {
};
MODULE_DEVICE_TABLE(of, of_tps65218_match_table);
-static int tps65218_probe(struct i2c_client *client,
- const struct i2c_device_id *ids)
+static int tps65218_voltage_set_strict(struct tps65218 *tps)
{
- struct tps65218 *tps;
- const struct of_device_id *match;
- int ret;
- unsigned int chipid;
+ u32 strict;
+
+ if (of_property_read_u32(tps->dev->of_node,
+ "ti,strict-supply-voltage-supervision",
+ &strict))
+ return 0;
+
+ if (strict != 0 && strict != 1) {
+ dev_err(tps->dev,
+ "Invalid ti,strict-supply-voltage-supervision value\n");
+ return -EINVAL;
+ }
+
+ tps65218_update_bits(tps, TPS65218_REG_CONFIG1,
+ TPS65218_CONFIG1_STRICT,
+ strict ? TPS65218_CONFIG1_STRICT : 0,
+ TPS65218_PROTECT_L1);
+ return 0;
+}
+
+static int tps65218_voltage_set_uv_hyst(struct tps65218 *tps)
+{
+ u32 hyst;
+
+ if (of_property_read_u32(tps->dev->of_node,
+ "ti,under-voltage-hyst-microvolt", &hyst))
+ return 0;
- match = of_match_device(of_tps65218_match_table, &client->dev);
- if (!match) {
- dev_err(&client->dev,
- "Failed to find matching dt id\n");
+ if (hyst != 400000 && hyst != 200000) {
+ dev_err(tps->dev,
+ "Invalid ti,under-voltage-hyst-microvolt value\n");
return -EINVAL;
}
+ tps65218_update_bits(tps, TPS65218_REG_CONFIG2,
+ TPS65218_CONFIG2_UVLOHYS,
+ hyst == 400000 ? TPS65218_CONFIG2_UVLOHYS : 0,
+ TPS65218_PROTECT_L1);
+ return 0;
+}
+
+static int tps65218_voltage_set_uvlo(struct tps65218 *tps)
+{
+ u32 uvlo;
+ int uvloval;
+
+ if (of_property_read_u32(tps->dev->of_node,
+ "ti,under-voltage-limit-microvolt", &uvlo))
+ return 0;
+
+ switch (uvlo) {
+ case 2750000:
+ uvloval = TPS65218_CONFIG1_UVLO_2750000;
+ break;
+ case 2950000:
+ uvloval = TPS65218_CONFIG1_UVLO_2950000;
+ break;
+ case 3250000:
+ uvloval = TPS65218_CONFIG1_UVLO_3250000;
+ break;
+ case 3350000:
+ uvloval = TPS65218_CONFIG1_UVLO_3350000;
+ break;
+ default:
+ dev_err(tps->dev,
+ "Invalid ti,under-voltage-limit-microvolt value\n");
+ return -EINVAL;
+ }
+
+ tps65218_update_bits(tps, TPS65218_REG_CONFIG1,
+ TPS65218_CONFIG1_UVLO_MASK, uvloval,
+ TPS65218_PROTECT_L1);
+ return 0;
+}
+
+static int tps65218_probe(struct i2c_client *client)
+{
+ struct tps65218 *tps;
+ int ret;
+ unsigned int chipid;
+
tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
if (!tps)
return -ENOMEM;
@@ -243,9 +302,9 @@ static int tps65218_probe(struct i2c_client *client,
mutex_init(&tps->tps_lock);
- ret = regmap_add_irq_chip(tps->regmap, tps->irq,
- IRQF_ONESHOT, 0, &tps65218_irq_chip,
- &tps->irq_data);
+ ret = devm_regmap_add_irq_chip(&client->dev, tps->regmap, tps->irq,
+ IRQF_ONESHOT, 0, &tps65218_irq_chip,
+ &tps->irq_data);
if (ret < 0)
return ret;
@@ -257,30 +316,25 @@ static int tps65218_probe(struct i2c_client *client,
tps->rev = chipid & TPS65218_CHIPID_REV_MASK;
- ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65218_cells,
- ARRAY_SIZE(tps65218_cells), NULL, 0,
- regmap_irq_get_domain(tps->irq_data));
+ ret = tps65218_voltage_set_strict(tps);
+ if (ret)
+ return ret;
- if (ret < 0)
- goto err_irq;
+ ret = tps65218_voltage_set_uvlo(tps);
+ if (ret)
+ return ret;
- return 0;
+ ret = tps65218_voltage_set_uv_hyst(tps);
+ if (ret)
+ return ret;
-err_irq:
- regmap_del_irq_chip(tps->irq, tps->irq_data);
+ ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65218_cells,
+ ARRAY_SIZE(tps65218_cells), NULL, 0,
+ regmap_irq_get_domain(tps->irq_data));
return ret;
}
-static int tps65218_remove(struct i2c_client *client)
-{
- struct tps65218 *tps = i2c_get_clientdata(client);
-
- regmap_del_irq_chip(tps->irq, tps->irq_data);
-
- return 0;
-}
-
static const struct i2c_device_id tps65218_id_table[] = {
{ "tps65218", TPS65218 },
{ },
@@ -293,7 +347,6 @@ static struct i2c_driver tps65218_driver = {
.of_match_table = of_tps65218_match_table,
},
.probe = tps65218_probe,
- .remove = tps65218_remove,
.id_table = tps65218_id_table,
};
generated by cgit (git 2.34.1) at 2025-12-26 01:40:18 +0000