From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757218Ab0DFCXp (ORCPT ); Mon, 5 Apr 2010 22:23:45 -0400 Received: from fischerfamily.org ([71.216.156.246]:27854 "EHLO gw" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757069Ab0DFCXG (ORCPT ); Mon, 5 Apr 2010 22:23:06 -0400 From: Todd Fischer To: linux-kernel@vger.kernel.org, davinci-linux-open-source@linux.davincidsp.com, sameo@linux.intel.com, lrg@slimlogic.co.uk, broonie@opensource.wolfsonmicro.com, todd.fischer@ridgerun.com Subject: [PATCH 4/4]-V3 Add MFD driver for TPS6507x family of multi-function chips and move TPS6507x regulator driver from being stand-alone to using the MFD driver. Date: Mon, 5 Apr 2010 20:23:59 -0600 Message-Id: <1270520639-20516-5-git-send-email-todd.fischer@ridgerun.com> X-Mailer: git-send-email 1.6.0.4 In-Reply-To: <1270520639-20516-4-git-send-email-todd.fischer@ridgerun.com> References: <1270520639-20516-1-git-send-email-todd.fischer@ridgerun.com> <1270520639-20516-2-git-send-email-todd.fischer@ridgerun.com> <1270520639-20516-3-git-send-email-todd.fischer@ridgerun.com> <1270520639-20516-4-git-send-email-todd.fischer@ridgerun.com> Organization: RidgeRun X-SA-Exim-Connect-IP: 10.0.0.3 X-SA-Exim-Mail-From: todd.fischer@ridgerun.com X-SA-Exim-Scanned: No (on gw); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add MFD driver for TPS6507x family of multi-function chips. Move TPS6507x regulator driver from being stand-alone driver to using the MFD TPS6507x driver. Signed-off-by: Todd Fischer --- drivers/mfd/Kconfig | 12 +++ drivers/mfd/Makefile | 3 +- drivers/mfd/tps6507x.c | 155 ++++++++++++++++++++++++++++++++ drivers/regulator/tps6507x-regulator.c | 153 +++++++++++++++---------------- include/linux/mfd/tps6507x.h | 22 +++++ 5 files changed, 265 insertions(+), 80 deletions(-) create mode 100644 drivers/mfd/tps6507x.c diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 2a5a0b7..1e301ad 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -111,6 +111,18 @@ config TPS65010 This driver can also be built as a module. If so, the module will be called tps65010. +config TPS6507X + tristate "TPS6507x Power Management / Touch Screen chips" + select MFD_CORE + depends on I2C + help + If you say yes here you get support for the TPS6507x series of + Power Management / Touch Screen chips. These include voltage + regulators, lithium ion/polymer battery charging, touch screen + 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 tps6507x. + config MENELAUS bool "Texas Instruments TWL92330/Menelaus PM chip" depends on I2C=y && ARCH_OMAP2 diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 22715ad..2bebc95 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -28,6 +28,7 @@ obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o obj-$(CONFIG_MFD_WM8994) += wm8994-core.o obj-$(CONFIG_TPS65010) += tps65010.o +obj-$(CONFIG_TPS6507X) += tps6507x.o obj-$(CONFIG_MENELAUS) += menelaus.o obj-$(CONFIG_TWL4030_CORE) += twl-core.o twl4030-irq.o twl6030-irq.o @@ -62,4 +63,4 @@ obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o obj-$(CONFIG_AB4500_CORE) += ab4500-core.o obj-$(CONFIG_MFD_TIMBERDALE) += timberdale.o obj-$(CONFIG_PMIC_ADP5520) += adp5520.o -obj-$(CONFIG_LPC_SCH) += lpc_sch.o \ No newline at end of file +obj-$(CONFIG_LPC_SCH) += lpc_sch.o diff --git a/drivers/mfd/tps6507x.c b/drivers/mfd/tps6507x.c new file mode 100644 index 0000000..5bca398 --- /dev/null +++ b/drivers/mfd/tps6507x.c @@ -0,0 +1,155 @@ +/* + * tps6507x.c -- TPS6507x chip family multi-function driver + * + * Copyright (c) 2010 RidgeRun (todd.fischer@ridgerun.com) + * + * Author: Todd Fischer + * todd.fischer@ridgerun.com + * + * Credits: + * + * Using code from wm831x-*.c, wm8400-core, Wolfson Microelectronics PLC. + * + * For licencing details see kernel-base/COPYING + * + */ + +#include +#include +#include +#include +#include +#include + +static struct mfd_cell tps6507x_devs[] = { + { + .name = "tps6507x-pmic", + }, +}; + + +static int tps6507x_i2c_read_device(struct tps6507x_dev *tps6507x, char reg, + int bytes, void *dest) +{ + struct i2c_client *i2c = tps6507x->i2c_client; + struct i2c_msg xfer[2]; + int ret; + + /* Write register */ + xfer[0].addr = i2c->addr; + xfer[0].flags = 0; + xfer[0].len = 1; + xfer[0].buf = ® + + /* Read data */ + xfer[1].addr = i2c->addr; + xfer[1].flags = I2C_M_RD; + xfer[1].len = bytes; + xfer[1].buf = dest; + + ret = i2c_transfer(i2c->adapter, xfer, 2); + if (ret == 2) + ret = 0; + else if (ret >= 0) + ret = -EIO; + + return ret; +} + +static int tps6507x_i2c_write_device(struct tps6507x_dev *tps6507x, char reg, + int bytes, void *src) +{ + struct i2c_client *i2c = tps6507x->i2c_client; + /* we add 1 byte for device register */ + u8 msg[TPS6507X_MAX_REGISTER + 1]; + int ret; + + if (bytes > (TPS6507X_MAX_REGISTER + 1)) + return -EINVAL; + + msg[0] = reg; + memcpy(&msg[1], src, bytes); + + ret = i2c_master_send(i2c, msg, bytes + 1); + if (ret < 0) + return ret; + if (ret != bytes + 1) + return -EIO; + return 0; +} + +static int tps6507x_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct tps6507x_dev *tps6507x; + int ret = 0; + + tps6507x = kzalloc(sizeof(struct tps6507x_dev), GFP_KERNEL); + if (tps6507x == NULL) { + kfree(i2c); + return -ENOMEM; + } + + i2c_set_clientdata(i2c, tps6507x); + tps6507x->dev = &i2c->dev; + tps6507x->i2c_client = i2c; + tps6507x->read_dev = tps6507x_i2c_read_device; + tps6507x->write_dev = tps6507x_i2c_write_device; + + ret = mfd_add_devices(tps6507x->dev, -1, + tps6507x_devs, ARRAY_SIZE(tps6507x_devs), + NULL, 0); + + if (ret < 0) + goto err; + + return ret; + +err: + mfd_remove_devices(tps6507x->dev); + kfree(tps6507x); + return ret; +} + +static int tps6507x_i2c_remove(struct i2c_client *i2c) +{ + struct tps6507x_dev *tps6507x = i2c_get_clientdata(i2c); + + mfd_remove_devices(tps6507x->dev); + kfree(tps6507x); + + return 0; +} + +static const struct i2c_device_id tps6507x_i2c_id[] = { + { "tps6507x", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tps6507x_i2c_id); + + +static struct i2c_driver tps6507x_i2c_driver = { + .driver = { + .name = "tps6507x", + .owner = THIS_MODULE, + }, + .probe = tps6507x_i2c_probe, + .remove = tps6507x_i2c_remove, + .id_table = tps6507x_i2c_id, +}; + +static int __init tps6507x_i2c_init(void) +{ + return i2c_add_driver(&tps6507x_i2c_driver); +} +/* init early so consumer devices can complete system boot */ +subsys_initcall(tps6507x_i2c_init); + +static void __exit tps6507x_i2c_exit(void) +{ + i2c_del_driver(&tps6507x_i2c_driver); +} +module_exit(tps6507x_i2c_exit); + +MODULE_DESCRIPTION("TPS6507x chip family multi-function driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/regulator/tps6507x-regulator.c b/drivers/regulator/tps6507x-regulator.c index 86f2e05..e4d7d2f 100644 --- a/drivers/regulator/tps6507x-regulator.c +++ b/drivers/regulator/tps6507x-regulator.c @@ -22,7 +22,6 @@ #include #include #include -#include #include #include @@ -103,22 +102,67 @@ struct tps_info { const u16 *table; }; +static const struct tps_info tps6507x_pmic_regs[] = { + { + .name = "VDCDC1", + .min_uV = 725000, + .max_uV = 3300000, + .table_len = ARRAY_SIZE(VDCDCx_VSEL_table), + .table = VDCDCx_VSEL_table, + }, + { + .name = "VDCDC2", + .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, + }, +}; + struct tps6507x_pmic { struct regulator_desc desc[TPS6507X_NUM_REGULATOR]; - struct i2c_client *client; + struct tps6507x_dev *mfd; struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR]; const struct tps_info *info[TPS6507X_NUM_REGULATOR]; struct mutex io_lock; }; - static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg) { - return i2c_smbus_read_byte_data(tps->client, reg); + u8 val; + int err; + + err = tps->mfd->read_dev(tps->mfd, reg, 1, &val); + + if (err) + return err; + + return val; } static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val) { - return i2c_smbus_write_byte_data(tps->client, reg, val); + return tps->mfd->write_dev(tps->mfd, reg, 1, &val); } static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask) @@ -129,7 +173,7 @@ static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask) data = tps6507x_pmic_read(tps, reg); if (data < 0) { - dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); + dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg); err = data; goto out; } @@ -137,7 +181,7 @@ static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask) data |= mask; err = tps6507x_pmic_write(tps, reg, data); if (err) - dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); + dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg); out: mutex_unlock(&tps->io_lock); @@ -152,7 +196,7 @@ static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask) data = tps6507x_pmic_read(tps, reg); if (data < 0) { - dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); + dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg); err = data; goto out; } @@ -160,7 +204,7 @@ static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask) data &= ~mask; err = tps6507x_pmic_write(tps, reg, data); if (err) - dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); + dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg); out: mutex_unlock(&tps->io_lock); @@ -175,7 +219,7 @@ static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg) data = tps6507x_pmic_read(tps, reg); if (data < 0) - dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); + dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg); mutex_unlock(&tps->io_lock); return data; @@ -189,7 +233,7 @@ static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val) err = tps6507x_pmic_write(tps, reg, val); if (err < 0) - dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); + dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg); mutex_unlock(&tps->io_lock); return err; @@ -482,11 +526,12 @@ static struct regulator_ops tps6507x_pmic_ldo_ops = { .list_voltage = tps6507x_pmic_ldo_list_voltage, }; -static int __devinit tps6507x_pmic_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static __devinit +int tps6507x_pmic_probe(struct platform_device *pdev) { + struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent); static int desc_id; - const struct tps_info *info = (void *)id->driver_data; + const struct tps_info *info = &tps6507x_pmic_regs[0]; struct regulator_init_data *init_data; struct regulator_dev *rdev; struct tps6507x_pmic *tps; @@ -494,16 +539,12 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client, int i; int error; - if (!i2c_check_functionality(client->adapter, - I2C_FUNC_SMBUS_BYTE_DATA)) - return -EIO; - /** * tps_board points to pmic related constants * coming from the board-evm file. */ - tps_board = dev_get_platdata(&client->dev); + tps_board = dev_get_platdata(tps6507x_dev->dev); if (!tps_board) return -EINVAL; @@ -522,7 +563,7 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client, mutex_init(&tps->io_lock); /* common for all regulators */ - tps->client = client; + tps->mfd = tps6507x_dev; for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) { /* Register the regulators */ @@ -536,10 +577,11 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client, tps->desc[i].owner = THIS_MODULE; rdev = regulator_register(&tps->desc[i], - &client->dev, init_data, tps); + tps6507x_dev->dev, init_data, tps); if (IS_ERR(rdev)) { - dev_err(&client->dev, "failed to register %s\n", - id->name); + dev_err(tps6507x_dev->dev, + "failed to register %s regulator\n", + pdev->name); error = PTR_ERR(rdev); goto fail; } @@ -548,7 +590,7 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client, tps->rdev[i] = rdev; } - i2c_set_clientdata(client, tps); + tps6507x_dev->pmic = tps; return 0; @@ -566,14 +608,12 @@ fail: * * Unregister TPS driver as an i2c client device driver */ -static int __devexit tps6507x_pmic_remove(struct i2c_client *client) +static int __devexit tps6507x_pmic_remove(struct platform_device *pdev) { - struct tps6507x_pmic *tps = i2c_get_clientdata(client); + struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev); + struct tps6507x_pmic *tps = tps6507x_dev->pmic; int i; - /* clear the client data in i2c */ - i2c_set_clientdata(client, NULL); - for (i = 0; i < TPS6507X_NUM_REGULATOR; i++) regulator_unregister(tps->rdev[i]); @@ -582,59 +622,13 @@ static int __devexit tps6507x_pmic_remove(struct i2c_client *client) return 0; } -static const struct tps_info tps6507x_pmic_regs[] = { - { - .name = "VDCDC1", - .min_uV = 725000, - .max_uV = 3300000, - .table_len = ARRAY_SIZE(VDCDCx_VSEL_table), - .table = VDCDCx_VSEL_table, - }, - { - .name = "VDCDC2", - .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, }; /** @@ -644,7 +638,7 @@ 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); @@ -655,10 +649,11 @@ 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"); diff --git a/include/linux/mfd/tps6507x.h b/include/linux/mfd/tps6507x.h index fd73af5..9543cb7 100644 --- a/include/linux/mfd/tps6507x.h +++ b/include/linux/mfd/tps6507x.h @@ -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 */ -- 1.6.0.4