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mfd: Add TPS6507x support
TPS6507x are multi function (PM, touchscreen) chipsets from TI. This commit also changes the corresponding regulator driver from being standalone to an MFD subdevice. Signed-off-by: Todd Fischer <todd.fischer@ridgerun.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Todd Fischer
Samuel Ortiz
parent
4ce5ba5ba2
commit
31dd6a2672
@ -116,6 +116,18 @@ config TPS65010
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This driver can also be built as a module. If so, the module
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will be called tps65010.
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config TPS6507X
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tristate "TPS6507x Power Management / Touch Screen chips"
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select MFD_CORE
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depends on I2C
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help
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If you say yes here you get support for the TPS6507x series of
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Power Management / Touch Screen chips. These include voltage
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regulators, lithium ion/polymer battery charging, touch screen
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and other features that are often used in portable devices.
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This driver can also be built as a module. If so, the module
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will be called tps6507x.
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config MENELAUS
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bool "Texas Instruments TWL92330/Menelaus PM chip"
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depends on I2C=y && ARCH_OMAP2
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@ -29,6 +29,7 @@ obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o
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obj-$(CONFIG_MFD_WM8994) += wm8994-core.o wm8994-irq.o
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obj-$(CONFIG_TPS65010) += tps65010.o
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obj-$(CONFIG_TPS6507X) += tps6507x.o
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obj-$(CONFIG_MENELAUS) += menelaus.o
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obj-$(CONFIG_TWL4030_CORE) += twl-core.o twl4030-irq.o twl6030-irq.o
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156
drivers/mfd/tps6507x.c
Normal file
156
drivers/mfd/tps6507x.c
Normal file
@ -0,0 +1,156 @@
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/*
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* tps6507x.c -- TPS6507x chip family multi-function driver
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*
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* Copyright (c) 2010 RidgeRun (todd.fischer@ridgerun.com)
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*
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* Author: Todd Fischer
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* todd.fischer@ridgerun.com
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*
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* Credits:
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*
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* Using code from wm831x-*.c, wm8400-core, Wolfson Microelectronics PLC.
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*
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* For licencing details see kernel-base/COPYING
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/tps6507x.h>
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static struct mfd_cell tps6507x_devs[] = {
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{
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.name = "tps6507x-pmic",
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},
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};
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static int tps6507x_i2c_read_device(struct tps6507x_dev *tps6507x, char reg,
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int bytes, void *dest)
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{
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struct i2c_client *i2c = tps6507x->i2c_client;
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struct i2c_msg xfer[2];
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int ret;
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/* Write register */
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xfer[0].addr = i2c->addr;
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xfer[0].flags = 0;
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xfer[0].len = 1;
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xfer[0].buf = ®
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/* Read data */
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xfer[1].addr = i2c->addr;
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xfer[1].flags = I2C_M_RD;
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xfer[1].len = bytes;
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xfer[1].buf = dest;
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ret = i2c_transfer(i2c->adapter, xfer, 2);
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if (ret == 2)
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ret = 0;
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else if (ret >= 0)
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ret = -EIO;
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return ret;
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}
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static int tps6507x_i2c_write_device(struct tps6507x_dev *tps6507x, char reg,
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int bytes, void *src)
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{
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struct i2c_client *i2c = tps6507x->i2c_client;
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/* we add 1 byte for device register */
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u8 msg[TPS6507X_MAX_REGISTER + 1];
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int ret;
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if (bytes > (TPS6507X_MAX_REGISTER + 1))
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return -EINVAL;
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msg[0] = reg;
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memcpy(&msg[1], src, bytes);
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ret = i2c_master_send(i2c, msg, bytes + 1);
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if (ret < 0)
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return ret;
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if (ret != bytes + 1)
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return -EIO;
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return 0;
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}
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static int tps6507x_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct tps6507x_dev *tps6507x;
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int ret = 0;
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tps6507x = kzalloc(sizeof(struct tps6507x_dev), GFP_KERNEL);
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if (tps6507x == NULL) {
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kfree(i2c);
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return -ENOMEM;
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}
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i2c_set_clientdata(i2c, tps6507x);
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tps6507x->dev = &i2c->dev;
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tps6507x->i2c_client = i2c;
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tps6507x->read_dev = tps6507x_i2c_read_device;
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tps6507x->write_dev = tps6507x_i2c_write_device;
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ret = mfd_add_devices(tps6507x->dev, -1,
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tps6507x_devs, ARRAY_SIZE(tps6507x_devs),
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NULL, 0);
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if (ret < 0)
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goto err;
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return ret;
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err:
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mfd_remove_devices(tps6507x->dev);
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kfree(tps6507x);
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return ret;
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}
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static int tps6507x_i2c_remove(struct i2c_client *i2c)
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{
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struct tps6507x_dev *tps6507x = i2c_get_clientdata(i2c);
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mfd_remove_devices(tps6507x->dev);
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kfree(tps6507x);
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return 0;
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}
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static const struct i2c_device_id tps6507x_i2c_id[] = {
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{ "tps6507x", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, tps6507x_i2c_id);
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static struct i2c_driver tps6507x_i2c_driver = {
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.driver = {
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.name = "tps6507x",
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.owner = THIS_MODULE,
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},
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.probe = tps6507x_i2c_probe,
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.remove = tps6507x_i2c_remove,
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.id_table = tps6507x_i2c_id,
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};
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static int __init tps6507x_i2c_init(void)
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{
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return i2c_add_driver(&tps6507x_i2c_driver);
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}
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/* init early so consumer devices can complete system boot */
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subsys_initcall(tps6507x_i2c_init);
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static void __exit tps6507x_i2c_exit(void)
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{
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i2c_del_driver(&tps6507x_i2c_driver);
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}
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module_exit(tps6507x_i2c_exit);
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MODULE_DESCRIPTION("TPS6507x chip family multi-function driver");
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MODULE_LICENSE("GPL");
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@ -22,7 +22,6 @@
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/i2c.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/mfd/tps6507x.h>
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@ -104,22 +103,67 @@ struct tps_info {
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const u16 *table;
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};
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static const struct tps_info tps6507x_pmic_regs[] = {
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{
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.name = "VDCDC1",
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.min_uV = 725000,
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.max_uV = 3300000,
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.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
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.table = VDCDCx_VSEL_table,
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},
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{
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.name = "VDCDC2",
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.min_uV = 725000,
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.max_uV = 3300000,
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.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
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.table = VDCDCx_VSEL_table,
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},
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{
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.name = "VDCDC3",
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.min_uV = 725000,
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.max_uV = 3300000,
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.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
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.table = VDCDCx_VSEL_table,
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},
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{
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.name = "LDO1",
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.min_uV = 1000000,
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.max_uV = 3300000,
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.table_len = ARRAY_SIZE(LDO1_VSEL_table),
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.table = LDO1_VSEL_table,
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},
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{
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.name = "LDO2",
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.min_uV = 725000,
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.max_uV = 3300000,
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.table_len = ARRAY_SIZE(LDO2_VSEL_table),
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.table = LDO2_VSEL_table,
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},
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};
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struct tps6507x_pmic {
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struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
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struct i2c_client *client;
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struct tps6507x_dev *mfd;
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struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
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const struct tps_info *info[TPS6507X_NUM_REGULATOR];
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struct mutex io_lock;
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};
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static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
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{
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return i2c_smbus_read_byte_data(tps->client, reg);
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u8 val;
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int err;
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err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);
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if (err)
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return err;
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return val;
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}
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static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
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{
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return i2c_smbus_write_byte_data(tps->client, reg, val);
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return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
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}
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static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
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@ -130,7 +174,7 @@ static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
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data = tps6507x_pmic_read(tps, reg);
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if (data < 0) {
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dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
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dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
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err = data;
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goto out;
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}
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@ -138,7 +182,7 @@ static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
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data |= mask;
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err = tps6507x_pmic_write(tps, reg, data);
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if (err)
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dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
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dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
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out:
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mutex_unlock(&tps->io_lock);
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@ -153,7 +197,7 @@ static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
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data = tps6507x_pmic_read(tps, reg);
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if (data < 0) {
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dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
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dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
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err = data;
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goto out;
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}
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@ -161,7 +205,7 @@ static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
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data &= ~mask;
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err = tps6507x_pmic_write(tps, reg, data);
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if (err)
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dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
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dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
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out:
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mutex_unlock(&tps->io_lock);
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@ -176,7 +220,7 @@ static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
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data = tps6507x_pmic_read(tps, reg);
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if (data < 0)
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dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
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dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
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mutex_unlock(&tps->io_lock);
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return data;
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@ -190,7 +234,7 @@ static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
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err = tps6507x_pmic_write(tps, reg, val);
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if (err < 0)
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dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
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dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
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mutex_unlock(&tps->io_lock);
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return err;
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@ -483,11 +527,12 @@ static struct regulator_ops tps6507x_pmic_ldo_ops = {
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.list_voltage = tps6507x_pmic_ldo_list_voltage,
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};
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static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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static __devinit
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int tps6507x_pmic_probe(struct platform_device *pdev)
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{
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struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
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static int desc_id;
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const struct tps_info *info = (void *)id->driver_data;
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const struct tps_info *info = &tps6507x_pmic_regs[0];
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struct regulator_init_data *init_data;
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struct regulator_dev *rdev;
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struct tps6507x_pmic *tps;
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@ -495,16 +540,12 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
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int i;
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int error;
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if (!i2c_check_functionality(client->adapter,
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I2C_FUNC_SMBUS_BYTE_DATA))
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return -EIO;
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/**
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* tps_board points to pmic related constants
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* coming from the board-evm file.
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*/
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tps_board = dev_get_platdata(&client->dev);
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tps_board = dev_get_platdata(tps6507x_dev->dev);
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if (!tps_board)
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return -EINVAL;
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@ -523,7 +564,7 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
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mutex_init(&tps->io_lock);
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/* common for all regulators */
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tps->client = client;
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tps->mfd = tps6507x_dev;
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for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
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/* Register the regulators */
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@ -537,10 +578,11 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
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tps->desc[i].owner = THIS_MODULE;
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rdev = regulator_register(&tps->desc[i],
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&client->dev, init_data, tps);
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tps6507x_dev->dev, init_data, tps);
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if (IS_ERR(rdev)) {
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dev_err(&client->dev, "failed to register %s\n",
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id->name);
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dev_err(tps6507x_dev->dev,
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"failed to register %s regulator\n",
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pdev->name);
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error = PTR_ERR(rdev);
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goto fail;
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}
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@ -549,7 +591,7 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
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tps->rdev[i] = rdev;
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}
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i2c_set_clientdata(client, tps);
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tps6507x_dev->pmic = tps;
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return 0;
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@ -567,14 +609,12 @@ fail:
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*
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* Unregister TPS driver as an i2c client device driver
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*/
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static int __devexit tps6507x_pmic_remove(struct i2c_client *client)
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static int __devexit tps6507x_pmic_remove(struct platform_device *pdev)
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{
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struct tps6507x_pmic *tps = i2c_get_clientdata(client);
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struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev);
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struct tps6507x_pmic *tps = tps6507x_dev->pmic;
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int i;
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/* clear the client data in i2c */
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i2c_set_clientdata(client, NULL);
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for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
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regulator_unregister(tps->rdev[i]);
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@ -583,59 +623,13 @@ static int __devexit tps6507x_pmic_remove(struct i2c_client *client)
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return 0;
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}
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static const struct tps_info tps6507x_pmic_regs[] = {
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{
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.name = "VDCDC1",
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.min_uV = 725000,
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.max_uV = 3300000,
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.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
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.table = VDCDCx_VSEL_table,
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},
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{
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.name = "VDCDC2",
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.min_uV = 725000,
|
||||
.max_uV = 3300000,
|
||||
.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
|
||||
.table = VDCDCx_VSEL_table,
|
||||
},
|
||||
{
|
||||
.name = "VDCDC3",
|
||||
.min_uV = 725000,
|
||||
.max_uV = 3300000,
|
||||
.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
|
||||
.table = VDCDCx_VSEL_table,
|
||||
},
|
||||
{
|
||||
.name = "LDO1",
|
||||
.min_uV = 1000000,
|
||||
.max_uV = 3300000,
|
||||
.table_len = ARRAY_SIZE(LDO1_VSEL_table),
|
||||
.table = LDO1_VSEL_table,
|
||||
},
|
||||
{
|
||||
.name = "LDO2",
|
||||
.min_uV = 725000,
|
||||
.max_uV = 3300000,
|
||||
.table_len = ARRAY_SIZE(LDO2_VSEL_table),
|
||||
.table = LDO2_VSEL_table,
|
||||
},
|
||||
};
|
||||
|
||||
static const struct i2c_device_id tps6507x_pmic_id[] = {
|
||||
{.name = "tps6507x",
|
||||
.driver_data = (unsigned long) tps6507x_pmic_regs,},
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, tps6507x_pmic_id);
|
||||
|
||||
static struct i2c_driver tps6507x_i2c_driver = {
|
||||
static struct platform_driver tps6507x_pmic_driver = {
|
||||
.driver = {
|
||||
.name = "tps6507x",
|
||||
.name = "tps6507x-pmic",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = tps6507x_pmic_probe,
|
||||
.remove = __devexit_p(tps6507x_pmic_remove),
|
||||
.id_table = tps6507x_pmic_id,
|
||||
};
|
||||
|
||||
/**
|
||||
@ -645,7 +639,7 @@ static struct i2c_driver tps6507x_i2c_driver = {
|
||||
*/
|
||||
static int __init tps6507x_pmic_init(void)
|
||||
{
|
||||
return i2c_add_driver(&tps6507x_i2c_driver);
|
||||
return platform_driver_register(&tps6507x_pmic_driver);
|
||||
}
|
||||
subsys_initcall(tps6507x_pmic_init);
|
||||
|
||||
@ -656,10 +650,11 @@ subsys_initcall(tps6507x_pmic_init);
|
||||
*/
|
||||
static void __exit tps6507x_pmic_cleanup(void)
|
||||
{
|
||||
i2c_del_driver(&tps6507x_i2c_driver);
|
||||
platform_driver_unregister(&tps6507x_pmic_driver);
|
||||
}
|
||||
module_exit(tps6507x_pmic_cleanup);
|
||||
|
||||
MODULE_AUTHOR("Texas Instruments");
|
||||
MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_ALIAS("platform:tps6507x-pmic");
|
||||
|
||||
@ -131,6 +131,8 @@
|
||||
/* VDCDC MASK */
|
||||
#define TPS6507X_DEFDCDCX_DCDC_MASK 0X3F
|
||||
|
||||
#define TPS6507X_MAX_REGISTER 0X19
|
||||
|
||||
/**
|
||||
* struct tps6507x_board - packages regulator and touchscreen init data
|
||||
* @tps6507x_regulator_data: regulator initialization values
|
||||
@ -142,4 +144,24 @@ struct tps6507x_board {
|
||||
struct regulator_init_data *tps6507x_pmic_init_data;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct tps6507x_dev - tps6507x sub-driver chip access routines
|
||||
* @read_dev() - I2C register read function
|
||||
* @write_dev() - I2C register write function
|
||||
*
|
||||
* Device data may be used to access the TPS6507x chip
|
||||
*/
|
||||
|
||||
struct tps6507x_dev {
|
||||
struct device *dev;
|
||||
struct i2c_client *i2c_client;
|
||||
int (*read_dev)(struct tps6507x_dev *tps6507x, char reg, int size,
|
||||
void *dest);
|
||||
int (*write_dev)(struct tps6507x_dev *tps6507x, char reg, int size,
|
||||
void *src);
|
||||
|
||||
/* Client devices */
|
||||
struct tps6507x_pmic *pmic;
|
||||
};
|
||||
|
||||
#endif /* __LINUX_MFD_TPS6507X_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user