* [PATCH 2/4] MFD: TPS65218: Add driver for the TPS65218 PMIC
2013-12-03 6:43 [PATCH 0/4] mfd: TPS65218: Add support for TPS65218 PMIC Keerthy
2013-12-03 6:43 ` [PATCH 1/4] mfd: DT bindings " Keerthy
@ 2013-12-03 6:43 ` Keerthy
2013-12-03 9:24 ` Lee Jones
2013-12-03 15:19 ` Mark Brown
2013-12-03 6:43 ` [PATCH 3/4] Regulators: TPS65218: Add Regulator driver for " Keerthy
2013-12-03 6:43 ` [PATCH 4/4] ARM: dts: AM437x: Add TPS65218 device tree nodes Keerthy
3 siblings, 2 replies; 16+ messages in thread
From: Keerthy @ 2013-12-03 6:43 UTC (permalink / raw)
To: rob.herring, pawel.moll, mark.rutland, swarren, ijc+devicetree,
rob, sameo, lee.jones, grant.likely, lgirdwood, broonie
Cc: j-keerthy, devicetree, linux-doc, linux-kernel, linux-omap
The TPS65218 chip is a power management IC for Portable Navigation Systems
and Tablet Computing devices. It contains the following components:
- Regulators.
- Over Temperature warning and Shut down.
This patch adds support for tps65218 mfd device. At this time only
the regulator functionality is made available.
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
drivers/mfd/Kconfig | 14 ++
drivers/mfd/Makefile | 1 +
drivers/mfd/tps65218.c | 281 +++++++++++++++++++++++++++++++++++++++++
include/linux/mfd/tps65218.h | 288 ++++++++++++++++++++++++++++++++++++++++++
4 files changed, 584 insertions(+)
create mode 100644 drivers/mfd/tps65218.c
create mode 100644 include/linux/mfd/tps65218.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 62a60ca..b8f8b30 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -833,6 +833,20 @@ config MFD_TPS65217
This driver can also be built as a module. If so, the module
will be called tps65217.
+config MFD_TPS65218
+ tristate "TI TPS65218 Power Management chips"
+ depends on I2C
+ select MFD_CORE
+ select REGMAP_I2C
+ help
+ If you say yes here you get support for the TPS65218 series of
+ Power Management chips.
+ These include voltage regulators, gpio and other features
+ that are often used in portable devices.
+
+ This driver can also be built as a module. If so, the module
+ will be called tps65218.
+
config MFD_TPS6586X
bool "TI TPS6586x Power Management chips"
depends on I2C=y
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 8a28dc9..76668da 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -62,6 +62,7 @@ obj-$(CONFIG_TPS6105X) += tps6105x.o
obj-$(CONFIG_TPS65010) += tps65010.o
obj-$(CONFIG_TPS6507X) += tps6507x.o
obj-$(CONFIG_MFD_TPS65217) += tps65217.o
+obj-$(CONFIG_MFD_TPS65218) += tps65218.o
obj-$(CONFIG_MFD_TPS65910) += tps65910.o
tps65912-objs := tps65912-core.o tps65912-irq.o
obj-$(CONFIG_MFD_TPS65912) += tps65912.o
diff --git a/drivers/mfd/tps65218.c b/drivers/mfd/tps65218.c
new file mode 100644
index 0000000..8c61640
--- /dev/null
+++ b/drivers/mfd/tps65218.c
@@ -0,0 +1,281 @@
+/*
+ * TPS65218 chip family multi-function driver
+ *
+ * Copyright (C) 2013 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#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>
+
+#include <linux/mfd/core.h>
+#include <linux/mfd/tps65218.h>
+
+#define TPS65218_PASSWORD_REGS_UNLOCK 0x7D
+
+/**
+ * tps65218_reg_read: Read a single tps65218 register.
+ *
+ * @tps: Device to read from.
+ * @reg: Register to read.
+ * @val: Contians the value
+ */
+int tps65218_reg_read(struct tps65218 *tps, unsigned int reg,
+ unsigned int *val)
+{
+ return regmap_read(tps->regmap, reg, val);
+}
+EXPORT_SYMBOL_GPL(tps65218_reg_read);
+
+/**
+ * tps65218_reg_write: Write a single tps65218 register.
+ *
+ * @tps65218: Device to write to.
+ * @reg: Register to write to.
+ * @val: Value to write.
+ * @level: Password protected level
+ */
+int tps65218_reg_write(struct tps65218 *tps, unsigned int reg,
+ unsigned int val, unsigned int level)
+{
+ int ret;
+ unsigned int xor_reg_val;
+
+ switch (level) {
+ case TPS65218_PROTECT_NONE:
+ return regmap_write(tps->regmap, reg, val);
+ case TPS65218_PROTECT_L1:
+ xor_reg_val = reg ^ TPS65218_PASSWORD_REGS_UNLOCK;
+ ret = regmap_write(tps->regmap, TPS65218_REG_PASSWORD,
+ xor_reg_val);
+ if (ret < 0)
+ return ret;
+
+ return regmap_write(tps->regmap, reg, val);
+ default:
+ return -EINVAL;
+ }
+}
+EXPORT_SYMBOL_GPL(tps65218_reg_write);
+
+/**
+ * tps65218_update_bits: Modify bits w.r.t mask, val and level.
+ *
+ * @tps65218: Device to write to.
+ * @reg: Register to read-write to.
+ * @mask: Mask.
+ * @val: Value to write.
+ * @level: Password protected level
+ */
+static int tps65218_update_bits(struct tps65218 *tps, unsigned int reg,
+ unsigned int mask, unsigned int val, unsigned int level)
+{
+ int ret;
+ unsigned int data;
+
+ ret = tps65218_reg_read(tps, reg, &data);
+ if (ret) {
+ dev_err(tps->dev, "Read from reg 0x%x failed\n", reg);
+ return ret;
+ }
+
+ data &= ~mask;
+ data |= val & mask;
+
+ mutex_lock(&tps->tps_lock);
+ ret = tps65218_reg_write(tps, reg, data, level);
+ if (ret)
+ dev_err(tps->dev, "Write for reg 0x%x failed\n", reg);
+ mutex_unlock(&tps->tps_lock);
+
+ return ret;
+}
+
+int tps65218_set_bits(struct tps65218 *tps, unsigned int reg,
+ unsigned int mask, unsigned int val, unsigned int level)
+{
+ return tps65218_update_bits(tps, reg, mask, val, level);
+}
+EXPORT_SYMBOL_GPL(tps65218_set_bits);
+
+int tps65218_clear_bits(struct tps65218 *tps, unsigned int reg,
+ unsigned int mask, unsigned int level)
+{
+ return tps65218_update_bits(tps, reg, mask, 0, level);
+}
+EXPORT_SYMBOL_GPL(tps65218_clear_bits);
+
+static struct regmap_config tps65218_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static const struct regmap_irq tps65218_irqs[] = {
+ /* INT1 IRQs */
+ [TPS65218_PRGC_IRQ] = {
+ .mask = TPS65218_INT1_PRGC,
+ },
+ [TPS65218_CC_AQC_IRQ] = {
+ .mask = TPS65218_INT1_CC_AQC,
+ },
+ [TPS65218_HOT_IRQ] = {
+ .mask = TPS65218_INT1_HOT,
+ },
+ [TPS65218_PB_IRQ] = {
+ .mask = TPS65218_INT1_PB,
+ },
+ [TPS65218_AC_IRQ] = {
+ .mask = TPS65218_INT1_AC,
+ },
+ [TPS65218_VPRG_IRQ] = {
+ .mask = TPS65218_INT1_VPRG,
+ },
+ [TPS65218_INVALID1_IRQ] = {
+ },
+ [TPS65218_INVALID2_IRQ] = {
+ },
+ /* INT2 IRQs*/
+ [TPS65218_LS1_I_IRQ] = {
+ .mask = TPS65218_INT2_LS1_I,
+ .reg_offset = 1,
+ },
+ [TPS65218_LS2_I_IRQ] = {
+ .mask = TPS65218_INT2_LS2_I,
+ .reg_offset = 1,
+ },
+ [TPS65218_LS3_I_IRQ] = {
+ .mask = TPS65218_INT2_LS3_I,
+ .reg_offset = 1,
+ },
+ [TPS65218_LS1_F_IRQ] = {
+ .mask = TPS65218_INT2_LS1_F,
+ .reg_offset = 1,
+ },
+ [TPS65218_LS2_F_IRQ] = {
+ .mask = TPS65218_INT2_LS2_F,
+ .reg_offset = 1,
+ },
+ [TPS65218_LS3_F_IRQ] = {
+ .mask = TPS65218_INT2_LS3_F,
+ .reg_offset = 1,
+ },
+ [TPS65218_INVALID3_IRQ] = {
+ },
+ [TPS65218_INVALID4_IRQ] = {
+ },
+};
+
+static struct regmap_irq_chip tps65218_irq_chip = {
+ .name = "tps65218",
+ .irqs = tps65218_irqs,
+ .num_irqs = ARRAY_SIZE(tps65218_irqs),
+
+ .num_regs = 2,
+ .mask_base = TPS65218_REG_INT_MASK1,
+};
+
+static const struct of_device_id of_tps65218_match_table[] = {
+ { .compatible = "ti,tps65218", },
+ { /* end */ }
+};
+
+static int tps65218_probe(struct i2c_client *client,
+ const struct i2c_device_id *ids)
+{
+ struct tps65218 *tps;
+ const struct of_device_id *match;
+ int ret;
+
+ match = of_match_device(of_tps65218_match_table, &client->dev);
+ if (!match) {
+ dev_err(&client->dev,
+ "Failed to find matching dt id\n");
+ return -EINVAL;
+ }
+
+ tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
+ if (!tps)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, tps);
+ tps->dev = &client->dev;
+ tps->irq = client->irq;
+ tps->regmap = devm_regmap_init_i2c(client, &tps65218_regmap_config);
+ if (IS_ERR(tps->regmap)) {
+ ret = PTR_ERR(tps->regmap);
+ dev_err(tps->dev, "Failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ mutex_init(&tps->tps_lock);
+
+ ret = regmap_add_irq_chip(tps->regmap, tps->irq,
+ IRQF_ONESHOT, 0, &tps65218_irq_chip,
+ &tps->irq_data);
+ if (ret < 0)
+ return ret;
+
+ ret = of_platform_populate(client->dev.of_node, NULL, NULL,
+ &client->dev);
+ if (ret < 0)
+ goto err_irq;
+
+ return 0;
+
+err_irq:
+ regmap_del_irq_chip(tps->irq, 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},
+};
+MODULE_DEVICE_TABLE(i2c, tps65218_id_table);
+
+static struct i2c_driver tps65218_driver = {
+ .driver = {
+ .name = "tps65218",
+ .owner = THIS_MODULE,
+ .of_match_table = of_tps65218_match_table,
+ },
+ .probe = tps65218_probe,
+ .remove = tps65218_remove,
+ .id_table = tps65218_id_table,
+};
+
+module_i2c_driver(tps65218_driver);
+
+MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
+MODULE_DESCRIPTION("TPS65218 chip family multi-function driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mfd/tps65218.h b/include/linux/mfd/tps65218.h
new file mode 100644
index 0000000..84b9c99
--- /dev/null
+++ b/include/linux/mfd/tps65218.h
@@ -0,0 +1,288 @@
+/*
+ * linux/mfd/tps65218.h
+ *
+ * Functions to access TPS65219 power management chip.
+ *
+ * Copyright (C) 2013 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.
+ */
+
+#ifndef __LINUX_MFD_TPS65218_H
+#define __LINUX_MFD_TPS65218_H
+
+#include <linux/i2c.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/bitops.h>
+
+/* TPS chip id list */
+#define TPS65218 0xF0
+
+/* I2C ID for TPS65218 part */
+#define TPS65218_I2C_ID 0x24
+
+/* All register addresses */
+#define TPS65218_REG_CHIPID 0x00
+#define TPS65218_REG_INT1 0x01
+#define TPS65218_REG_INT2 0x02
+#define TPS65218_REG_INT_MASK1 0x03
+#define TPS65218_REG_INT_MASK2 0x04
+#define TPS65218_REG_STATUS 0x05
+#define TPS65218_REG_CONTROL 0x06
+#define TPS65218_REG_FLAG 0x07
+
+#define TPS65218_REG_PASSWORD 0x10
+#define TPS65218_REG_ENABLE1 0x11
+#define TPS65218_REG_ENABLE2 0x12
+#define TPS65218_REG_CONFIG1 0x13
+#define TPS65218_REG_CONFIG2 0x14
+#define TPS65218_REG_CONFIG3 0x15
+#define TPS65218_REG_CONTROL_DCDC1 0x16
+#define TPS65218_REG_CONTROL_DCDC2 0x17
+#define TPS65218_REG_CONTROL_DCDC3 0x18
+#define TPS65218_REG_CONTROL_DCDC4 0x19
+#define TPS65218_REG_CONTRL_SLEW_RATE 0x1A
+#define TPS65218_REG_CONTROL_LDO1 0x1B
+#define TPS65218_REG_SEQ1 0x20
+#define TPS65218_REG_SEQ2 0x21
+#define TPS65218_REG_SEQ3 0x22
+#define TPS65218_REG_SEQ4 0x23
+#define TPS65218_REG_SEQ5 0x24
+#define TPS65218_REG_SEQ6 0x25
+#define TPS65218_REG_SEQ7 0x26
+
+/* Register field definitions */
+#define TPS65218_CHIPID_CHIP_MASK 0xF8
+#define TPS65218_CHIPID_REV_MASK 0x07
+
+#define TPS65218_INT1_VPRG BIT(5)
+#define TPS65218_INT1_AC BIT(4)
+#define TPS65218_INT1_PB BIT(3)
+#define TPS65218_INT1_HOT BIT(2)
+#define TPS65218_INT1_CC_AQC BIT(1)
+#define TPS65218_INT1_PRGC BIT(0)
+
+#define TPS65218_INT2_LS3_F BIT(5)
+#define TPS65218_INT2_LS2_F BIT(4)
+#define TPS65218_INT2_LS1_F BIT(3)
+#define TPS65218_INT2_LS3_I BIT(2)
+#define TPS65218_INT2_LS2_I BIT(1)
+#define TPS65218_INT2_LS1_I BIT(0)
+
+#define TPS65218_INT_MASK1_VPRG BIT(5)
+#define TPS65218_INT_MASK1_AC BIT(4)
+#define TPS65218_INT_MASK1_PB BIT(3)
+#define TPS65218_INT_MASK1_HOT BIT(2)
+#define TPS65218_INT_MASK1_CC_AQC BIT(1)
+#define TPS65218_INT_MASK1_PRGC BIT(0)
+
+#define TPS65218_INT_MASK2_LS3_F BIT(5)
+#define TPS65218_INT_MASK2_LS2_F BIT(4)
+#define TPS65218_INT_MASK2_LS1_F BIT(3)
+#define TPS65218_INT_MASK2_LS3_I BIT(2)
+#define TPS65218_INT_MASK2_LS2_I BIT(1)
+#define TPS65218_INT_MASK2_LS1_I BIT(0)
+
+#define TPS65218_STATUS_FSEAL BIT(7)
+#define TPS65218_STATUS_EE BIT(6)
+#define TPS65218_STATUS_AC_STATE BIT(5)
+#define TPS65218_STATUS_PB_STATE BIT(4)
+#define TPS65218_STATUS_STATE_MASK 0xC
+#define TPS65218_STATUS_CC_STAT 0x3
+
+#define TPS65218_CONTROL_OFFNPFO BIT(1)
+#define TPS65218_CONTROL_CC_AQ BIT(0)
+
+#define TPS65218_FLAG_GPO3_FLG BIT(7)
+#define TPS65218_FLAG_GPO2_FLG BIT(6)
+#define TPS65218_FLAG_GPO1_FLG BIT(5)
+#define TPS65218_FLAG_LDO1_FLG BIT(4)
+#define TPS65218_FLAG_DC4_FLG BIT(3)
+#define TPS65218_FLAG_DC3_FLG BIT(2)
+#define TPS65218_FLAG_DC2_FLG BIT(1)
+#define TPS65218_FLAG_DC1_FLG BIT(0)
+
+#define TPS65218_ENABLE1_DC6_EN BIT(5)
+#define TPS65218_ENABLE1_DC5_EN BIT(4)
+#define TPS65218_ENABLE1_DC4_EN BIT(3)
+#define TPS65218_ENABLE1_DC3_EN BIT(2)
+#define TPS65218_ENABLE1_DC2_EN BIT(1)
+#define TPS65218_ENABLE1_DC1_EN BIT(0)
+
+#define TPS65218_ENABLE2_GPIO3 BIT(6)
+#define TPS65218_ENABLE2_GPIO2 BIT(5)
+#define TPS65218_ENABLE2_GPIO1 BIT(4)
+#define TPS65218_ENABLE2_LS3_EN BIT(3)
+#define TPS65218_ENABLE2_LS2_EN BIT(2)
+#define TPS65218_ENABLE2_LS1_EN BIT(1)
+#define TPS65218_ENABLE2_LDO1_EN BIT(0)
+
+
+#define TPS65218_CONFIG1_TRST BIT(7)
+#define TPS65218_CONFIG1_GPO2_BUF BIT(6)
+#define TPS65218_CONFIG1_IO1_SEL BIT(5)
+#define TPS65218_CONFIG1_PGDLY_MASK 0x18
+#define TPS65218_CONFIG1_STRICT BIT(2)
+#define TPS65218_CONFIG1_UVLO_MASK 0x3
+
+#define TPS65218_CONFIG2_DC12_RST BIT(7)
+#define TPS65218_CONFIG2_UVLOHYS BIT(6)
+#define TPS65218_CONFIG2_LS3ILIM_MASK 0xC
+#define TPS65218_CONFIG2_LS2ILIM_MASK 0x3
+
+#define TPS65218_CONFIG3_LS3NPFO BIT(5)
+#define TPS65218_CONFIG3_LS2NPFO BIT(4)
+#define TPS65218_CONFIG3_LS1NPFO BIT(3)
+#define TPS65218_CONFIG3_LS3DCHRG BIT(2)
+#define TPS65218_CONFIG3_LS2DCHRG BIT(1)
+#define TPS65218_CONFIG3_LS1DCHRG BIT(0)
+
+#define TPS65218_CONTROL_DCDC1_PFM BIT(7)
+#define TPS65218_CONTROL_DCDC1_MASK 0x7F
+
+#define TPS65218_CONTROL_DCDC2_PFM BIT(7)
+#define TPS65218_CONTROL_DCDC2_MASK 0x3F
+
+#define TPS65218_CONTROL_DCDC3_PFM BIT(7)
+#define TPS65218_CONTROL_DCDC3_MASK 0x3F
+
+#define TPS65218_CONTROL_DCDC4_PFM BIT(7)
+#define TPS65218_CONTROL_DCDC4_MASK 0x3F
+
+#define TPS65218_SLEW_RATE_GO BIT(7)
+#define TPS65218_SLEW_RATE_GODSBL BIT(6)
+#define TPS65218_SLEW_RATE_SLEW_MASK 0x7
+
+#define TPS65218_CONTROL_LDO1_MASK 0x3F
+
+#define TPS65218_SEQ1_DLY8 BIT(7)
+#define TPS65218_SEQ1_DLY7 BIT(6)
+#define TPS65218_SEQ1_DLY6 BIT(5)
+#define TPS65218_SEQ1_DLY5 BIT(4)
+#define TPS65218_SEQ1_DLY4 BIT(3)
+#define TPS65218_SEQ1_DLY3 BIT(2)
+#define TPS65218_SEQ1_DLY2 BIT(1)
+#define TPS65218_SEQ1_DLY1 BIT(0)
+
+#define TPS65218_SEQ2_DLYFCTR BIT(7)
+#define TPS65218_SEQ2_DLY9 BIT(0)
+
+#define TPS65218_SEQ3_DC2_SEQ_MASK 0xF0
+#define TPS65218_SEQ3_DC1_SEQ_MASK 0xF
+
+#define TPS65218_SEQ4_DC4_SEQ_MASK 0xF0
+#define TPS65218_SEQ4_DC3_SEQ_MASK 0xF
+
+#define TPS65218_SEQ5_DC6_SEQ_MASK 0xF0
+#define TPS65218_SEQ5_DC5_SEQ_MASK 0xF
+
+#define TPS65218_SEQ6_LS1_SEQ_MASK 0xF0
+#define TPS65218_SEQ6_LDO1_SEQ_MASK 0xF
+
+#define TPS65218_SEQ7_GPO3_SEQ_MASK 0xF0
+#define TPS65218_SEQ7_GPO1_SEQ_MASK 0xF
+#define TPS65218_PROTECT_NONE 0
+#define TPS65218_PROTECT_L1 1
+
+enum tps65218_regulator_id {
+ /* DCDC's */
+ TPS65218_DCDC_1,
+ TPS65218_DCDC_2,
+ TPS65218_DCDC_3,
+ TPS65218_DCDC_4,
+ TPS65218_DCDC_5,
+ TPS65218_DCDC_6,
+ /* LDOs */
+ TPS65218_LDO_1,
+};
+
+#define TPS65218_MAX_REG_ID TPS65218_LDO_1
+
+/* Number of step-down converters available */
+#define TPS65218_NUM_DCDC 6
+/* Number of LDO voltage regulators available */
+#define TPS65218_NUM_LDO 1
+/* Number of total regulators available */
+#define TPS65218_NUM_REGULATOR (TPS65218_NUM_DCDC + TPS65218_NUM_LDO)
+
+/* Define the TPS65218 IRQ numbers */
+enum tps65218_irqs {
+ /* INT1 registers */
+ TPS65218_PRGC_IRQ,
+ TPS65218_CC_AQC_IRQ,
+ TPS65218_HOT_IRQ,
+ TPS65218_PB_IRQ,
+ TPS65218_AC_IRQ,
+ TPS65218_VPRG_IRQ,
+ TPS65218_INVALID1_IRQ,
+ TPS65218_INVALID2_IRQ,
+ /* INT2 registers */
+ TPS65218_LS1_I_IRQ,
+ TPS65218_LS2_I_IRQ,
+ TPS65218_LS3_I_IRQ,
+ TPS65218_LS1_F_IRQ,
+ TPS65218_LS2_F_IRQ,
+ TPS65218_LS3_F_IRQ,
+ TPS65218_INVALID3_IRQ,
+ TPS65218_INVALID4_IRQ,
+};
+
+/**
+ * struct tps_info - packages regulator constraints
+ * @id: Id of the regulator
+ * @name: Voltage regulator name
+ * @min_uV: minimum micro volts
+ * @max_uV: minimum micro volts
+ * @vsel_to_uv: Function pointer to get voltage from selector
+ * @uv_to_vsel: Function pointer to get selector from voltage
+ *
+ * This data is used to check the regualtor voltage limits while setting.
+ */
+struct tps_info {
+ int id;
+ const char *name;
+ int min_uV;
+ int max_uV;
+ int (*vsel_to_uv)(unsigned int vsel);
+ int (*uv_to_vsel)(int uV, unsigned int *vsel);
+};
+
+/**
+ * struct tps65218 - tps65218 sub-driver chip access routines
+ *
+ * Device data may be used to access the TPS65218 chip
+ */
+
+struct tps65218 {
+ struct device *dev;
+ unsigned int id;
+
+ struct mutex tps_lock; /* lock guarding the data structure */
+ /* IRQ Data */
+ int irq;
+ u32 irq_mask;
+ struct regmap_irq_chip_data *irq_data;
+ struct regulator_desc desc[TPS65218_NUM_REGULATOR];
+ struct regulator_dev *rdev[TPS65218_NUM_REGULATOR];
+ struct tps_info *info[TPS65218_NUM_REGULATOR];
+ struct regmap *regmap;
+};
+
+int tps65218_reg_read(struct tps65218 *tps, unsigned int reg,
+ unsigned int *val);
+int tps65218_reg_write(struct tps65218 *tps, unsigned int reg,
+ unsigned int val, unsigned int level);
+int tps65218_set_bits(struct tps65218 *tps, unsigned int reg,
+ unsigned int mask, unsigned int val, unsigned int level);
+int tps65218_clear_bits(struct tps65218 *tps, unsigned int reg,
+ unsigned int mask, unsigned int level);
+
+#endif /* __LINUX_MFD_TPS65218_H */
--
1.7.9.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH 3/4] Regulators: TPS65218: Add Regulator driver for TPS65218 PMIC
2013-12-03 6:43 [PATCH 0/4] mfd: TPS65218: Add support for TPS65218 PMIC Keerthy
2013-12-03 6:43 ` [PATCH 1/4] mfd: DT bindings " Keerthy
2013-12-03 6:43 ` [PATCH 2/4] MFD: TPS65218: Add driver for the " Keerthy
@ 2013-12-03 6:43 ` Keerthy
2013-12-03 15:16 ` Mark Brown
2013-12-04 7:39 ` Manish Badarkhe
2013-12-03 6:43 ` [PATCH 4/4] ARM: dts: AM437x: Add TPS65218 device tree nodes Keerthy
3 siblings, 2 replies; 16+ messages in thread
From: Keerthy @ 2013-12-03 6:43 UTC (permalink / raw)
To: rob.herring, pawel.moll, mark.rutland, swarren, ijc+devicetree,
rob, sameo, lee.jones, grant.likely, lgirdwood, broonie
Cc: j-keerthy, devicetree, linux-doc, linux-kernel, linux-omap
This patch adds support for TPS65218 PMIC regulators.
The regulators set consists of 6 DCDCs and 1 LDO. The output
voltages are configurable and are meant to supply power to the
main processor and other components.
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
drivers/regulator/Kconfig | 9 +
drivers/regulator/Makefile | 1 +
drivers/regulator/tps65218-regulator.c | 393 ++++++++++++++++++++++++++++++++
3 files changed, 403 insertions(+)
create mode 100644 drivers/regulator/tps65218-regulator.c
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index ce785f4..42f94eb 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -498,6 +498,15 @@ config REGULATOR_TPS65217
voltage regulators. It supports software based voltage control
for different voltage domains
+config REGULATOR_TPS65218
+ tristate "TI TPS65218 Power regulators"
+ depends on MFD_TPS65218
+ help
+ This driver supports TPS65218 voltage regulator chips. TPS65218
+ provides six step-down converters and one general-purpose LDO
+ voltage regulators. It supports software based voltage control
+ for different voltage domains
+
config REGULATOR_TPS6524X
tristate "TI TPS6524X Power regulators"
depends on SPI
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 01c597e..dfbfdf9 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -65,6 +65,7 @@ obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o
obj-$(CONFIG_REGULATOR_TPS65090) += tps65090-regulator.o
obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o
+obj-$(CONFIG_REGULATOR_TPS65218) += tps65218-regulator.o
obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c
new file mode 100644
index 0000000..4989c83
--- /dev/null
+++ b/drivers/regulator/tps65218-regulator.c
@@ -0,0 +1,393 @@
+/*
+ * tps65218-regulator.c
+ *
+ * Regulator driver for TPS65218 PMIC
+ *
+ * Copyright (C) 2013 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/of_device.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/tps65218.h>
+
+static unsigned int tps65218_ramp_delay = 4000;
+
+#define TPS65218_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _er, _em, _t) \
+ { \
+ .name = _name, \
+ .id = _id, \
+ .ops = &_ops, \
+ .n_voltages = _n, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .vsel_reg = _vr, \
+ .vsel_mask = _vm, \
+ .enable_reg = _er, \
+ .enable_mask = _em, \
+ .volt_table = _t, \
+ } \
+
+#define TPS65218_INFO(_id, _nm, _min, _max, _f1, _f2) \
+ { \
+ .id = _id, \
+ .name = _nm, \
+ .min_uV = _min, \
+ .max_uV = _max, \
+ .vsel_to_uv = _f1, \
+ .uv_to_vsel = _f2, \
+ }
+
+static int tps65218_ldo1_dcdc3_vsel_to_uv(unsigned int vsel)
+{
+ int uV = 0;
+
+ if (vsel <= 26)
+ uV = vsel * 25000 + 900000;
+ else
+ uV = (vsel - 26) * 50000 + 1550000;
+
+ return uV;
+}
+
+static int tps65218_ldo1_dcdc3_uv_to_vsel(int uV, unsigned int *vsel)
+{
+ if (uV <= 1550000)
+ *vsel = DIV_ROUND_UP(uV - 900000, 25000);
+ else
+ *vsel = 26 + DIV_ROUND_UP(uV - 1550000, 50000);
+
+ return 0;
+}
+
+static int tps65218_dcdc1_2_vsel_to_uv(unsigned int vsel)
+{
+ int uV = 0;
+
+ if (vsel <= 50)
+ uV = vsel * 10000 + 850000;
+ else
+ uV = (vsel - 50) * 25000 + 1350000;
+
+ return uV;
+}
+
+static int tps65218_dcdc1_2_uv_to_vsel(int uV, unsigned int *vsel)
+{
+ if (uV <= 1350000)
+ *vsel = DIV_ROUND_UP(uV - 850000, 10000);
+ else
+ *vsel = 50 + DIV_ROUND_UP(uV - 1350000, 25000);
+
+ return 0;
+}
+
+static int tps65218_dcd4_vsel_to_uv(unsigned int vsel)
+{
+ int uV = 0;
+
+ if (vsel <= 15)
+ uV = vsel * 25000 + 1175000;
+ else
+ uV = (vsel - 15) * 50000 + 1550000;
+
+ return uV;
+}
+
+static int tps65218_dcdc4_uv_to_vsel(int uV, unsigned int *vsel)
+{
+ if (uV <= 1550000)
+ *vsel = DIV_ROUND_UP(uV - 1175000, 25000);
+ else
+ *vsel = 15 + DIV_ROUND_UP(uV - 1550000, 50000);
+
+ return 0;
+}
+
+static struct tps_info tps65218_pmic_regs[] = {
+ TPS65218_INFO(0, "DCDC1", 850000, 1675000, tps65218_dcdc1_2_vsel_to_uv,
+ tps65218_dcdc1_2_uv_to_vsel),
+ TPS65218_INFO(1, "DCDC2", 850000, 1675000, tps65218_dcdc1_2_vsel_to_uv,
+ tps65218_dcdc1_2_uv_to_vsel),
+ TPS65218_INFO(2, "DCDC3", 900000, 3400000,
+ tps65218_ldo1_dcdc3_vsel_to_uv,
+ tps65218_ldo1_dcdc3_uv_to_vsel),
+ TPS65218_INFO(3, "DCDC4", 1175000, 3400000, tps65218_dcd4_vsel_to_uv,
+ tps65218_dcdc4_uv_to_vsel),
+ TPS65218_INFO(4, "DCDC5", 1000000, 1000000, NULL, NULL),
+ TPS65218_INFO(5, "DCDC6", 1800000, 1800000, NULL, NULL),
+ TPS65218_INFO(6, "LDO1", 900000, 3400000,
+ tps65218_ldo1_dcdc3_vsel_to_uv,
+ tps65218_ldo1_dcdc3_uv_to_vsel),
+};
+
+#define TPS65218_OF_MATCH(comp, label) \
+ { \
+ .compatible = comp, \
+ .data = &label, \
+ }
+
+static const struct of_device_id tps65218_of_match[] = {
+ TPS65218_OF_MATCH("ti,tps65218-dcdc1", tps65218_pmic_regs[0]),
+ TPS65218_OF_MATCH("ti,tps65218-dcdc2", tps65218_pmic_regs[1]),
+ TPS65218_OF_MATCH("ti,tps65218-dcdc3", tps65218_pmic_regs[2]),
+ TPS65218_OF_MATCH("ti,tps65218-dcdc4", tps65218_pmic_regs[3]),
+ TPS65218_OF_MATCH("ti,tps65218-dcdc5", tps65218_pmic_regs[4]),
+ TPS65218_OF_MATCH("ti,tps65218-dcdc6", tps65218_pmic_regs[5]),
+ TPS65218_OF_MATCH("ti,tps65218-ldo1", tps65218_pmic_regs[6]),
+};
+MODULE_DEVICE_TABLE(of, tps65218_of_match);
+
+static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev,
+ unsigned selector)
+{
+ int ret;
+ struct tps65218 *tps = rdev_get_drvdata(dev);
+ unsigned int rid = rdev_get_id(dev);
+
+ /* Set the voltage based on vsel value and write protect level is 2 */
+ ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
+ selector, TPS65218_PROTECT_L1);
+
+ /* Set GO bit for DCDC1/2 to initiate voltage transistion */
+ switch (rid) {
+ case TPS65218_DCDC_1:
+ case TPS65218_DCDC_2:
+ ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE,
+ TPS65218_SLEW_RATE_GO,
+ TPS65218_SLEW_RATE_GO,
+ TPS65218_PROTECT_L1);
+ break;
+ }
+
+ return ret;
+}
+
+static int tps65218_pmic_map_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct tps65218 *tps = rdev_get_drvdata(dev);
+ unsigned int sel, rid = rdev_get_id(dev);
+ int ret;
+
+ if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
+ return -EINVAL;
+
+ if (min_uV < tps->info[rid]->min_uV)
+ min_uV = tps->info[rid]->min_uV;
+
+ if (max_uV < tps->info[rid]->min_uV || min_uV > tps->info[rid]->max_uV)
+ return -EINVAL;
+
+ ret = tps->info[rid]->uv_to_vsel(min_uV, &sel);
+ if (ret)
+ return ret;
+
+ return sel;
+}
+
+static int tps65218_pmic_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps65218 *tps = rdev_get_drvdata(dev);
+ unsigned int rid = rdev_get_id(dev);
+
+ if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
+ return -EINVAL;
+
+ if (selector >= dev->desc->n_voltages)
+ return -EINVAL;
+
+ return tps->info[rid]->vsel_to_uv(selector);
+}
+
+static int tps65218_pmic_enable(struct regulator_dev *dev)
+{
+ struct tps65218 *tps = rdev_get_drvdata(dev);
+ unsigned int rid = rdev_get_id(dev);
+
+ if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
+ return -EINVAL;
+
+ /* Enable the regulator and password protection is level 1 */
+ return tps65218_set_bits(tps, dev->desc->enable_reg,
+ dev->desc->enable_mask, dev->desc->enable_mask,
+ TPS65218_PROTECT_L1);
+}
+
+static int tps65218_pmic_disable(struct regulator_dev *dev)
+{
+ struct tps65218 *tps = rdev_get_drvdata(dev);
+ unsigned int rid = rdev_get_id(dev);
+
+ if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
+ return -EINVAL;
+
+ /* Disable the regulator and password protection is level 1 */
+ return tps65218_clear_bits(tps, dev->desc->enable_reg,
+ dev->desc->enable_mask, TPS65218_PROTECT_L1);
+}
+
+static int tps65218_set_voltage_time_sel(struct regulator_dev *rdev,
+ unsigned int old_selector, unsigned int new_selector)
+{
+ int old_uv, new_uv;
+
+ old_uv = tps65218_pmic_list_voltage(rdev, old_selector);
+ if (old_uv < 0)
+ return old_uv;
+
+ new_uv = tps65218_pmic_list_voltage(rdev, new_selector);
+ if (new_uv < 0)
+ return new_uv;
+
+ return DIV_ROUND_UP(abs(old_uv - new_uv), tps65218_ramp_delay);
+}
+
+/* Operations permitted on DCDC1, DCDC2 */
+static struct regulator_ops tps65218_dcdc12_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = tps65218_pmic_enable,
+ .disable = tps65218_pmic_disable,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = tps65218_pmic_set_voltage_sel,
+ .list_voltage = tps65218_pmic_list_voltage,
+ .map_voltage = tps65218_pmic_map_voltage,
+ .set_voltage_time_sel = tps65218_set_voltage_time_sel,
+};
+
+/* Operations permitted on DCDC3, DCDC4 and LDO1 */
+static struct regulator_ops tps65218_ldo1_dcdc34_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = tps65218_pmic_enable,
+ .disable = tps65218_pmic_disable,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = tps65218_pmic_set_voltage_sel,
+ .list_voltage = tps65218_pmic_list_voltage,
+ .map_voltage = tps65218_pmic_map_voltage,
+};
+
+/* Operations permitted on DCDC5, DCDC6 */
+static struct regulator_ops tps65218_dcdc56_pmic_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = tps65218_pmic_enable,
+ .disable = tps65218_pmic_disable,
+};
+
+static const struct regulator_desc regulators[] = {
+ TPS65218_REGULATOR("DCDC1", TPS65218_DCDC_1, tps65218_dcdc12_ops, 64,
+ TPS65218_REG_CONTROL_DCDC1,
+ TPS65218_CONTROL_DCDC1_MASK,
+ TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC1_EN, NULL),
+ TPS65218_REGULATOR("DCDC2", TPS65218_DCDC_2, tps65218_dcdc12_ops, 64,
+ TPS65218_REG_CONTROL_DCDC2,
+ TPS65218_CONTROL_DCDC2_MASK,
+ TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC2_EN, NULL),
+ TPS65218_REGULATOR("DCDC3", TPS65218_DCDC_3, tps65218_ldo1_dcdc34_ops,
+ 64, TPS65218_REG_CONTROL_DCDC3,
+ TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1,
+ TPS65218_ENABLE1_DC3_EN, NULL),
+ TPS65218_REGULATOR("DCDC4", TPS65218_DCDC_4, tps65218_ldo1_dcdc34_ops,
+ 53, TPS65218_REG_CONTROL_DCDC4,
+ TPS65218_CONTROL_DCDC4_MASK,
+ TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC4_EN, NULL),
+ TPS65218_REGULATOR("DCDC5", TPS65218_DCDC_5, tps65218_dcdc56_pmic_ops,
+ 1, -1, -1, TPS65218_REG_ENABLE1,
+ TPS65218_ENABLE1_DC5_EN, NULL),
+ TPS65218_REGULATOR("DCDC6", TPS65218_DCDC_6, tps65218_dcdc56_pmic_ops,
+ 1, -1, -1, TPS65218_REG_ENABLE1,
+ TPS65218_ENABLE1_DC6_EN, NULL),
+ TPS65218_REGULATOR("LDO1", TPS65218_LDO_1, tps65218_ldo1_dcdc34_ops, 64,
+ TPS65218_REG_CONTROL_LDO1,
+ TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2,
+ TPS65218_ENABLE2_LDO1_EN, NULL),
+};
+
+static int tps65218_regulator_probe(struct platform_device *pdev)
+{
+ struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent);
+ struct regulator_init_data *init_data;
+ const struct tps_info *template;
+ struct regulator_dev *rdev;
+ const struct of_device_id *match;
+ struct regulator_config config = { };
+ int id;
+
+ match = of_match_device(tps65218_of_match, &pdev->dev);
+ if (match) {
+ template = match->data;
+ id = template->id;
+ init_data = of_get_regulator_init_data(&pdev->dev,
+ pdev->dev.of_node);
+ } else {
+ return -ENODEV;
+ }
+
+ platform_set_drvdata(pdev, tps);
+
+ tps->info[id] = &tps65218_pmic_regs[id];
+ config.dev = &pdev->dev;
+ config.init_data = init_data;
+ config.driver_data = tps;
+ config.regmap = tps->regmap;
+ config.of_node = pdev->dev.of_node;
+
+ rdev = regulator_register(®ulators[id], &config);
+ if (IS_ERR(rdev)) {
+ dev_err(tps->dev, "failed to register %s regulator\n",
+ pdev->name);
+ return PTR_ERR(rdev);
+ }
+
+ /* Save regulator */
+ tps->rdev[id] = rdev;
+
+ return 0;
+}
+
+static int tps65218_regulator_remove(struct platform_device *pdev)
+{
+ struct tps65218 *tps = platform_get_drvdata(pdev);
+ const struct of_device_id *match;
+ const struct tps_info *template;
+
+ match = of_match_device(tps65218_of_match, &pdev->dev);
+ template = match->data;
+ regulator_unregister(tps->rdev[template->id]);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver tps65218_regulator_driver = {
+ .driver = {
+ .name = "tps65218-pmic",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(tps65218_of_match),
+ },
+ .probe = tps65218_regulator_probe,
+ .remove = tps65218_regulator_remove,
+};
+
+module_platform_driver(tps65218_regulator_driver);
+
+MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
+MODULE_DESCRIPTION("TPS65218 voltage regulator driver");
+MODULE_ALIAS("platform:tps65218-pmic");
+MODULE_LICENSE("GPL v2");
--
1.7.9.5
^ permalink raw reply related [flat|nested] 16+ messages in thread