| Message ID | 1467215067-6486-3-git-send-email-j-keerthy@ti.com |
|---|---|
| State | New |
| Headers | show |
On Wed, 29 Jun 2016, Keerthy wrote: > The LP873X chip is a power management IC for Portable Navigation Systems > and Tablet Computing devices. It contains the following components: > > - Regulators. > - Configurable General Purpose Output Signals(GPO). > > PMIC interacts with the main processor through i2c. PMIC has > couple of LDOs(Linear Regulators), couple of BUCKs (Step-Down DC-DC > Converter Cores) and GPOs(General Purpose Output Signals). > > Signed-off-by: Keerthy <j-keerthy@ti.com> > --- > > Changes in v4: > > * Added Author. > * Added the mfd_cell for gpio. > > Changes in v3: > > * Reordered the probe code. > * Fixed Typo in Kconfig description. > * Removed unused member from struct lp873x. > > drivers/mfd/Kconfig | 14 +++ > drivers/mfd/Makefile | 2 + > drivers/mfd/lp873x.c | 99 +++++++++++++++++ > include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++ > 4 files changed, 379 insertions(+) > create mode 100644 drivers/mfd/lp873x.c > create mode 100644 include/linux/mfd/lp873x.h > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index 9987d86..e68ac28 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -1221,6 +1221,20 @@ config MFD_TPS65217 > This driver can also be built as a module. If so, the module > will be called tps65217. > > +config MFD_LP873X Nicer as MFD_TI_LP873X I think. > + tristate "TI LP873X Power Management IC" > + depends on I2C > + select MFD_CORE > + select REGMAP_I2C > + help > + If you say yes here then you get support for the LP873X series of > + power management integrated circuits(PMIC). Power Management Integrated Circuits (PMIC). > + These include voltage regulators, Thermal protection, Configurable > + general purpose outputs(GPO) that are used in portable devices. Some here. Please standardise your capitalisation. > + This driver can also be built as a module. If so, the module > + will be called lp873x. > + > config MFD_TPS65218 > tristate "TI TPS65218 Power Management chips" > depends on I2C > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile > index 2ba3ba3..7d9b965 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -22,6 +22,8 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o > obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o > obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o > > +obj-$(CONFIG_MFD_LP873X) += lp873x.o > + > obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o > obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o > obj-$(CONFIG_MFD_TI_AM335X_TSCADC) += ti_am335x_tscadc.o > diff --git a/drivers/mfd/lp873x.c b/drivers/mfd/lp873x.c > new file mode 100644 > index 0000000..54ed0ce > --- /dev/null > +++ b/drivers/mfd/lp873x.c > @@ -0,0 +1,99 @@ > +/* > + * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/ > + * > + * Author: Keerthy <j-keerthy@ti.com> > + * > + * 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 version 2. > + * > + * This program is distributed "as is" WITHOUT ANY WARRANTY of any > + * kind, whether express or implied; without even the implied warranty > + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + */ > + > +#include <linux/interrupt.h> > +#include <linux/mfd/core.h> > +#include <linux/module.h> > +#include <linux/of_device.h> > +#include <linux/regmap.h> > + > +#include <linux/mfd/lp873x.h> > + > +static const struct regmap_config lp873x_regmap_config = { > + .reg_bits = 8, > + .val_bits = 8, > + .max_register = LP873X_REG_MAX, > +}; > + > +static const struct mfd_cell lp873x_cells[] = { > + { .name = "lp873x-regulator", }, > + { .name = "lp873x-gpio", }, > +}; > + > +static int lp873x_probe(struct i2c_client *client, > + const struct i2c_device_id *ids) > +{ > + struct lp873x *lp873; > + int ret; > + unsigned int otpid; > + > + lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL); > + if (!lp873) > + return -ENOMEM; > + > + lp873->dev = &client->dev; > + > + lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config); > + if (IS_ERR(lp873->regmap)) { > + ret = PTR_ERR(lp873->regmap); > + dev_err(lp873->dev, "Failed to initialize register map: %d\n", > + ret); Nit: I'd prefer you break after "->dev,". > + return ret; > + } > + > + mutex_init(&lp873->lp873_lock); How many locks do you have in 'struct lp873x'? I suggest that 'lock' will do fine. > + ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid); > + if (ret) { > + dev_err(lp873->dev, "Failed to read OTP ID\n"); > + return ret; > + } > + > + lp873->rev = otpid & LP873X_OTP_REV_OTP_ID; > + i2c_set_clientdata(client, lp873); > + ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells, > + ARRAY_SIZE(lp873x_cells), NULL, 0, NULL); > + > + return ret; > +} > + > +static const struct of_device_id of_lp873x_match_table[] = { > + { .compatible = "ti,lp8733", }, > + { .compatible = "ti,lp8732", }, > + {} > +}; > +MODULE_DEVICE_TABLE(of, of_lp873x_match_table); > + > +static const struct i2c_device_id lp873x_id_table[] = { > + { "lp873x", LP873X }, > + { "lp8732", LP873X }, > + { "lp8733", LP873X }, Do you use these IDs at any point? [...]
On Friday 05 August 2016 01:33 PM, Lee Jones wrote: > On Wed, 29 Jun 2016, Keerthy wrote: > >> The LP873X chip is a power management IC for Portable Navigation Systems >> and Tablet Computing devices. It contains the following components: >> >> - Regulators. >> - Configurable General Purpose Output Signals(GPO). >> >> PMIC interacts with the main processor through i2c. PMIC has >> couple of LDOs(Linear Regulators), couple of BUCKs (Step-Down DC-DC >> Converter Cores) and GPOs(General Purpose Output Signals). >> >> Signed-off-by: Keerthy <j-keerthy@ti.com> >> --- >> >> Changes in v4: >> >> * Added Author. >> * Added the mfd_cell for gpio. >> >> Changes in v3: >> >> * Reordered the probe code. >> * Fixed Typo in Kconfig description. >> * Removed unused member from struct lp873x. >> >> drivers/mfd/Kconfig | 14 +++ >> drivers/mfd/Makefile | 2 + >> drivers/mfd/lp873x.c | 99 +++++++++++++++++ >> include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++ >> 4 files changed, 379 insertions(+) >> create mode 100644 drivers/mfd/lp873x.c >> create mode 100644 include/linux/mfd/lp873x.h >> >> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig >> index 9987d86..e68ac28 100644 >> --- a/drivers/mfd/Kconfig >> +++ b/drivers/mfd/Kconfig >> @@ -1221,6 +1221,20 @@ config MFD_TPS65217 >> This driver can also be built as a module. If so, the module >> will be called tps65217. >> >> +config MFD_LP873X > > Nicer as MFD_TI_LP873X I think. > >> + tristate "TI LP873X Power Management IC" >> + depends on I2C >> + select MFD_CORE >> + select REGMAP_I2C >> + help >> + If you say yes here then you get support for the LP873X series of >> + power management integrated circuits(PMIC). > > Power Management Integrated Circuits (PMIC). Okay > >> + These include voltage regulators, Thermal protection, Configurable >> + general purpose outputs(GPO) that are used in portable devices. > > Some here. Please standardise your capitalisation. Okay > >> + This driver can also be built as a module. If so, the module >> + will be called lp873x. >> + >> config MFD_TPS65218 >> tristate "TI TPS65218 Power Management chips" >> depends on I2C >> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile >> index 2ba3ba3..7d9b965 100644 >> --- a/drivers/mfd/Makefile >> +++ b/drivers/mfd/Makefile >> @@ -22,6 +22,8 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o >> obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o >> obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o >> >> +obj-$(CONFIG_MFD_LP873X) += lp873x.o >> + >> obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o >> obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o >> obj-$(CONFIG_MFD_TI_AM335X_TSCADC) += ti_am335x_tscadc.o >> diff --git a/drivers/mfd/lp873x.c b/drivers/mfd/lp873x.c >> new file mode 100644 >> index 0000000..54ed0ce >> --- /dev/null >> +++ b/drivers/mfd/lp873x.c >> @@ -0,0 +1,99 @@ >> +/* >> + * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/ >> + * >> + * Author: Keerthy <j-keerthy@ti.com> >> + * >> + * 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 version 2. >> + * >> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any >> + * kind, whether express or implied; without even the implied warranty >> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >> + * GNU General Public License for more details. >> + */ >> + >> +#include <linux/interrupt.h> >> +#include <linux/mfd/core.h> >> +#include <linux/module.h> >> +#include <linux/of_device.h> >> +#include <linux/regmap.h> >> + >> +#include <linux/mfd/lp873x.h> >> + >> +static const struct regmap_config lp873x_regmap_config = { >> + .reg_bits = 8, >> + .val_bits = 8, >> + .max_register = LP873X_REG_MAX, >> +}; >> + >> +static const struct mfd_cell lp873x_cells[] = { >> + { .name = "lp873x-regulator", }, >> + { .name = "lp873x-gpio", }, >> +}; >> + >> +static int lp873x_probe(struct i2c_client *client, >> + const struct i2c_device_id *ids) >> +{ >> + struct lp873x *lp873; >> + int ret; >> + unsigned int otpid; >> + >> + lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL); >> + if (!lp873) >> + return -ENOMEM; >> + >> + lp873->dev = &client->dev; >> + >> + lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config); >> + if (IS_ERR(lp873->regmap)) { >> + ret = PTR_ERR(lp873->regmap); >> + dev_err(lp873->dev, "Failed to initialize register map: %d\n", >> + ret); > > Nit: I'd prefer you break after "->dev,". Okay > >> + return ret; >> + } >> + >> + mutex_init(&lp873->lp873_lock); > > How many locks do you have in 'struct lp873x'? > > I suggest that 'lock' will do fine. Okay. > >> + ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid); >> + if (ret) { >> + dev_err(lp873->dev, "Failed to read OTP ID\n"); >> + return ret; >> + } >> + >> + lp873->rev = otpid & LP873X_OTP_REV_OTP_ID; >> + i2c_set_clientdata(client, lp873); >> + ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells, >> + ARRAY_SIZE(lp873x_cells), NULL, 0, NULL); >> + >> + return ret; >> +} >> + >> +static const struct of_device_id of_lp873x_match_table[] = { >> + { .compatible = "ti,lp8733", }, >> + { .compatible = "ti,lp8732", }, >> + {} >> +}; >> +MODULE_DEVICE_TABLE(of, of_lp873x_match_table); >> + >> +static const struct i2c_device_id lp873x_id_table[] = { >> + { "lp873x", LP873X }, >> + { "lp8732", LP873X }, >> + { "lp8733", LP873X }, > > Do you use these IDs at any point? I have lp8733 and lp8732 at the moment. They are register exact but different parts none the less. Hence having separate strings. As of now no differences seen in gpio/regulator modules so not using them anywhere. > > [...] > -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Fri, 05 Aug 2016, Keerthy wrote: > On Friday 05 August 2016 01:33 PM, Lee Jones wrote: > > On Wed, 29 Jun 2016, Keerthy wrote: > > > > > The LP873X chip is a power management IC for Portable Navigation Systems > > > and Tablet Computing devices. It contains the following components: > > > > > > - Regulators. > > > - Configurable General Purpose Output Signals(GPO). > > > > > > PMIC interacts with the main processor through i2c. PMIC has > > > couple of LDOs(Linear Regulators), couple of BUCKs (Step-Down DC-DC > > > Converter Cores) and GPOs(General Purpose Output Signals). > > > > > > Signed-off-by: Keerthy <j-keerthy@ti.com> > > > --- > > > > > > Changes in v4: > > > > > > * Added Author. > > > * Added the mfd_cell for gpio. > > > > > > Changes in v3: > > > > > > * Reordered the probe code. > > > * Fixed Typo in Kconfig description. > > > * Removed unused member from struct lp873x. > > > > > > drivers/mfd/Kconfig | 14 +++ > > > drivers/mfd/Makefile | 2 + > > > drivers/mfd/lp873x.c | 99 +++++++++++++++++ > > > include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++ > > > 4 files changed, 379 insertions(+) > > > create mode 100644 drivers/mfd/lp873x.c > > > create mode 100644 include/linux/mfd/lp873x.h > > > > > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > > > index 9987d86..e68ac28 100644 > > > --- a/drivers/mfd/Kconfig > > > +++ b/drivers/mfd/Kconfig > > > @@ -1221,6 +1221,20 @@ config MFD_TPS65217 > > > This driver can also be built as a module. If so, the module > > > will be called tps65217. > > > > > > +config MFD_LP873X > > > > Nicer as MFD_TI_LP873X I think. > > > > > + tristate "TI LP873X Power Management IC" > > > + depends on I2C > > > + select MFD_CORE > > > + select REGMAP_I2C > > > + help > > > + If you say yes here then you get support for the LP873X series of > > > + power management integrated circuits(PMIC). > > > > Power Management Integrated Circuits (PMIC). > > Okay > > > > > > + These include voltage regulators, Thermal protection, Configurable > > > + general purpose outputs(GPO) that are used in portable devices. > > > > Some here. Please standardise your capitalisation. > > Okay > > > > > > + This driver can also be built as a module. If so, the module > > > + will be called lp873x. > > > + > > > config MFD_TPS65218 > > > tristate "TI TPS65218 Power Management chips" > > > depends on I2C > > > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile > > > index 2ba3ba3..7d9b965 100644 > > > --- a/drivers/mfd/Makefile > > > +++ b/drivers/mfd/Makefile > > > @@ -22,6 +22,8 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o > > > obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o > > > obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o > > > > > > +obj-$(CONFIG_MFD_LP873X) += lp873x.o > > > + > > > obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o > > > obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o > > > obj-$(CONFIG_MFD_TI_AM335X_TSCADC) += ti_am335x_tscadc.o > > > diff --git a/drivers/mfd/lp873x.c b/drivers/mfd/lp873x.c > > > new file mode 100644 > > > index 0000000..54ed0ce > > > --- /dev/null > > > +++ b/drivers/mfd/lp873x.c > > > @@ -0,0 +1,99 @@ > > > +/* > > > + * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/ > > > + * > > > + * Author: Keerthy <j-keerthy@ti.com> > > > + * > > > + * 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 version 2. > > > + * > > > + * This program is distributed "as is" WITHOUT ANY WARRANTY of any > > > + * kind, whether express or implied; without even the implied warranty > > > + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > > > + * GNU General Public License for more details. > > > + */ > > > + > > > +#include <linux/interrupt.h> > > > +#include <linux/mfd/core.h> > > > +#include <linux/module.h> > > > +#include <linux/of_device.h> > > > +#include <linux/regmap.h> > > > + > > > +#include <linux/mfd/lp873x.h> > > > + > > > +static const struct regmap_config lp873x_regmap_config = { > > > + .reg_bits = 8, > > > + .val_bits = 8, > > > + .max_register = LP873X_REG_MAX, > > > +}; > > > + > > > +static const struct mfd_cell lp873x_cells[] = { > > > + { .name = "lp873x-regulator", }, > > > + { .name = "lp873x-gpio", }, > > > +}; > > > + > > > +static int lp873x_probe(struct i2c_client *client, > > > + const struct i2c_device_id *ids) > > > +{ > > > + struct lp873x *lp873; > > > + int ret; > > > + unsigned int otpid; > > > + > > > + lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL); > > > + if (!lp873) > > > + return -ENOMEM; > > > + > > > + lp873->dev = &client->dev; > > > + > > > + lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config); > > > + if (IS_ERR(lp873->regmap)) { > > > + ret = PTR_ERR(lp873->regmap); > > > + dev_err(lp873->dev, "Failed to initialize register map: %d\n", > > > + ret); > > > > Nit: I'd prefer you break after "->dev,". > > Okay > > > > > > + return ret; > > > + } > > > + > > > + mutex_init(&lp873->lp873_lock); > > > > How many locks do you have in 'struct lp873x'? > > > > I suggest that 'lock' will do fine. > > Okay. > > > > > > + ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid); > > > + if (ret) { > > > + dev_err(lp873->dev, "Failed to read OTP ID\n"); > > > + return ret; > > > + } > > > + > > > + lp873->rev = otpid & LP873X_OTP_REV_OTP_ID; > > > + i2c_set_clientdata(client, lp873); > > > + ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells, > > > + ARRAY_SIZE(lp873x_cells), NULL, 0, NULL); > > > + > > > + return ret; > > > +} > > > + > > > +static const struct of_device_id of_lp873x_match_table[] = { > > > + { .compatible = "ti,lp8733", }, > > > + { .compatible = "ti,lp8732", }, > > > + {} > > > +}; > > > +MODULE_DEVICE_TABLE(of, of_lp873x_match_table); > > > + > > > +static const struct i2c_device_id lp873x_id_table[] = { > > > + { "lp873x", LP873X }, > > > + { "lp8732", LP873X }, > > > + { "lp8733", LP873X }, > > > > Do you use these IDs at any point? > > I have lp8733 and lp8732 at the moment. They are register exact but > different parts none the less. Hence having separate strings. As of now no > differences seen in gpio/regulator modules so not using them anywhere. I have a patch-set pending on the I2C list that removes all unused 'struct i2c_device_id' tables. To identify which ones are in use and which ones can be removed, it would help if you could remove the unused .id field.
On Friday 05 August 2016 02:31 PM, Lee Jones wrote: > On Fri, 05 Aug 2016, Keerthy wrote: >> On Friday 05 August 2016 01:33 PM, Lee Jones wrote: >>> On Wed, 29 Jun 2016, Keerthy wrote: >>> >>>> The LP873X chip is a power management IC for Portable Navigation Systems >>>> and Tablet Computing devices. It contains the following components: >>>> >>>> - Regulators. >>>> - Configurable General Purpose Output Signals(GPO). >>>> >>>> PMIC interacts with the main processor through i2c. PMIC has >>>> couple of LDOs(Linear Regulators), couple of BUCKs (Step-Down DC-DC >>>> Converter Cores) and GPOs(General Purpose Output Signals). >>>> >>>> Signed-off-by: Keerthy <j-keerthy@ti.com> >>>> --- >>>> >>>> Changes in v4: >>>> >>>> * Added Author. >>>> * Added the mfd_cell for gpio. >>>> >>>> Changes in v3: >>>> >>>> * Reordered the probe code. >>>> * Fixed Typo in Kconfig description. >>>> * Removed unused member from struct lp873x. >>>> >>>> drivers/mfd/Kconfig | 14 +++ >>>> drivers/mfd/Makefile | 2 + >>>> drivers/mfd/lp873x.c | 99 +++++++++++++++++ >>>> include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++ >>>> 4 files changed, 379 insertions(+) >>>> create mode 100644 drivers/mfd/lp873x.c >>>> create mode 100644 include/linux/mfd/lp873x.h >>>> >>>> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig >>>> index 9987d86..e68ac28 100644 >>>> --- a/drivers/mfd/Kconfig >>>> +++ b/drivers/mfd/Kconfig >>>> @@ -1221,6 +1221,20 @@ config MFD_TPS65217 >>>> This driver can also be built as a module. If so, the module >>>> will be called tps65217. >>>> >>>> +config MFD_LP873X >>> >>> Nicer as MFD_TI_LP873X I think. >>> >>>> + tristate "TI LP873X Power Management IC" >>>> + depends on I2C >>>> + select MFD_CORE >>>> + select REGMAP_I2C >>>> + help >>>> + If you say yes here then you get support for the LP873X series of >>>> + power management integrated circuits(PMIC). >>> >>> Power Management Integrated Circuits (PMIC). >> >> Okay >> >>> >>>> + These include voltage regulators, Thermal protection, Configurable >>>> + general purpose outputs(GPO) that are used in portable devices. >>> >>> Some here. Please standardise your capitalisation. >> >> Okay >> >>> >>>> + This driver can also be built as a module. If so, the module >>>> + will be called lp873x. >>>> + >>>> config MFD_TPS65218 >>>> tristate "TI TPS65218 Power Management chips" >>>> depends on I2C >>>> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile >>>> index 2ba3ba3..7d9b965 100644 >>>> --- a/drivers/mfd/Makefile >>>> +++ b/drivers/mfd/Makefile >>>> @@ -22,6 +22,8 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o >>>> obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o >>>> obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o >>>> >>>> +obj-$(CONFIG_MFD_LP873X) += lp873x.o >>>> + >>>> obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o >>>> obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o >>>> obj-$(CONFIG_MFD_TI_AM335X_TSCADC) += ti_am335x_tscadc.o >>>> diff --git a/drivers/mfd/lp873x.c b/drivers/mfd/lp873x.c >>>> new file mode 100644 >>>> index 0000000..54ed0ce >>>> --- /dev/null >>>> +++ b/drivers/mfd/lp873x.c >>>> @@ -0,0 +1,99 @@ >>>> +/* >>>> + * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/ >>>> + * >>>> + * Author: Keerthy <j-keerthy@ti.com> >>>> + * >>>> + * 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 version 2. >>>> + * >>>> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any >>>> + * kind, whether express or implied; without even the implied warranty >>>> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >>>> + * GNU General Public License for more details. >>>> + */ >>>> + >>>> +#include <linux/interrupt.h> >>>> +#include <linux/mfd/core.h> >>>> +#include <linux/module.h> >>>> +#include <linux/of_device.h> >>>> +#include <linux/regmap.h> >>>> + >>>> +#include <linux/mfd/lp873x.h> >>>> + >>>> +static const struct regmap_config lp873x_regmap_config = { >>>> + .reg_bits = 8, >>>> + .val_bits = 8, >>>> + .max_register = LP873X_REG_MAX, >>>> +}; >>>> + >>>> +static const struct mfd_cell lp873x_cells[] = { >>>> + { .name = "lp873x-regulator", }, >>>> + { .name = "lp873x-gpio", }, >>>> +}; >>>> + >>>> +static int lp873x_probe(struct i2c_client *client, >>>> + const struct i2c_device_id *ids) >>>> +{ >>>> + struct lp873x *lp873; >>>> + int ret; >>>> + unsigned int otpid; >>>> + >>>> + lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL); >>>> + if (!lp873) >>>> + return -ENOMEM; >>>> + >>>> + lp873->dev = &client->dev; >>>> + >>>> + lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config); >>>> + if (IS_ERR(lp873->regmap)) { >>>> + ret = PTR_ERR(lp873->regmap); >>>> + dev_err(lp873->dev, "Failed to initialize register map: %d\n", >>>> + ret); >>> >>> Nit: I'd prefer you break after "->dev,". >> >> Okay >> >>> >>>> + return ret; >>>> + } >>>> + >>>> + mutex_init(&lp873->lp873_lock); >>> >>> How many locks do you have in 'struct lp873x'? >>> >>> I suggest that 'lock' will do fine. >> >> Okay. >> >>> >>>> + ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid); >>>> + if (ret) { >>>> + dev_err(lp873->dev, "Failed to read OTP ID\n"); >>>> + return ret; >>>> + } >>>> + >>>> + lp873->rev = otpid & LP873X_OTP_REV_OTP_ID; >>>> + i2c_set_clientdata(client, lp873); >>>> + ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells, >>>> + ARRAY_SIZE(lp873x_cells), NULL, 0, NULL); >>>> + >>>> + return ret; >>>> +} >>>> + >>>> +static const struct of_device_id of_lp873x_match_table[] = { >>>> + { .compatible = "ti,lp8733", }, >>>> + { .compatible = "ti,lp8732", }, >>>> + {} >>>> +}; >>>> +MODULE_DEVICE_TABLE(of, of_lp873x_match_table); >>>> + >>>> +static const struct i2c_device_id lp873x_id_table[] = { >>>> + { "lp873x", LP873X }, >>>> + { "lp8732", LP873X }, >>>> + { "lp8733", LP873X }, >>> >>> Do you use these IDs at any point? >> >> I have lp8733 and lp8732 at the moment. They are register exact but >> different parts none the less. Hence having separate strings. As of now no >> differences seen in gpio/regulator modules so not using them anywhere. > > I have a patch-set pending on the I2C list that removes all unused > 'struct i2c_device_id' tables. To identify which ones are in use and > which ones can be removed, it would help if you could remove the > unused .id field. I guess you are referring to this: http://www.gossamer-threads.com/lists/linux/kernel/2457552 I applied the above series and i see that by using driver_new in lp873x MFD driver i no longer need the mandatory i2c_device_id. Thanks. I will send a series on top of your i2c set v5 without any unused device_id. I will add a dependency on your set. Thanks and Regards, Keerthy > -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, 08 Aug 2016, Keerthy wrote: > On Friday 05 August 2016 02:31 PM, Lee Jones wrote: > > On Fri, 05 Aug 2016, Keerthy wrote: > > > On Friday 05 August 2016 01:33 PM, Lee Jones wrote: > > > > On Wed, 29 Jun 2016, Keerthy wrote: > > > > > > > > > The LP873X chip is a power management IC for Portable Navigation Systems > > > > > and Tablet Computing devices. It contains the following components: > > > > > > > > > > - Regulators. > > > > > - Configurable General Purpose Output Signals(GPO). > > > > > > > > > > PMIC interacts with the main processor through i2c. PMIC has > > > > > couple of LDOs(Linear Regulators), couple of BUCKs (Step-Down DC-DC > > > > > Converter Cores) and GPOs(General Purpose Output Signals). > > > > > > > > > > Signed-off-by: Keerthy <j-keerthy@ti.com> > > > > > --- > > > > > > > > > > Changes in v4: > > > > > > > > > > * Added Author. > > > > > * Added the mfd_cell for gpio. > > > > > > > > > > Changes in v3: > > > > > > > > > > * Reordered the probe code. > > > > > * Fixed Typo in Kconfig description. > > > > > * Removed unused member from struct lp873x. > > > > > > > > > > drivers/mfd/Kconfig | 14 +++ > > > > > drivers/mfd/Makefile | 2 + > > > > > drivers/mfd/lp873x.c | 99 +++++++++++++++++ > > > > > include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++ > > > > > 4 files changed, 379 insertions(+) > > > > > create mode 100644 drivers/mfd/lp873x.c > > > > > create mode 100644 include/linux/mfd/lp873x.h [...] > > > > > +static const struct i2c_device_id lp873x_id_table[] = { > > > > > + { "lp873x", LP873X }, > > > > > + { "lp8732", LP873X }, > > > > > + { "lp8733", LP873X }, > > > > > > > > Do you use these IDs at any point? > > > > > > I have lp8733 and lp8732 at the moment. They are register exact but > > > different parts none the less. Hence having separate strings. As of now no > > > differences seen in gpio/regulator modules so not using them anywhere. > > > > I have a patch-set pending on the I2C list that removes all unused > > 'struct i2c_device_id' tables. To identify which ones are in use and > > which ones can be removed, it would help if you could remove the > > unused .id field. > > I guess you are referring to this: > > http://www.gossamer-threads.com/lists/linux/kernel/2457552 > > I applied the above series and i see that by using driver_new in lp873x > MFD driver i no longer need the mandatory i2c_device_id. Thanks. > I will send a series on top of your i2c set v5 without any unused device_id. > I will add a dependency on your set. I would not do that if I were you. That set has been pending for years. I'm just saying, when that patch-set is accepted, it will be easier to identify removable tables if they do not contain populated, but unused .id entries.
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 9987d86..e68ac28 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1221,6 +1221,20 @@ config MFD_TPS65217 This driver can also be built as a module. If so, the module will be called tps65217. +config MFD_LP873X + tristate "TI LP873X Power Management IC" + depends on I2C + select MFD_CORE + select REGMAP_I2C + help + If you say yes here then you get support for the LP873X series of + power management integrated circuits(PMIC). + These include voltage regulators, Thermal protection, Configurable + general purpose outputs(GPO) that are used in portable devices. + + This driver can also be built as a module. If so, the module + will be called lp873x. + config MFD_TPS65218 tristate "TI TPS65218 Power Management chips" depends on I2C diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 2ba3ba3..7d9b965 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -22,6 +22,8 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o +obj-$(CONFIG_MFD_LP873X) += lp873x.o + obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o obj-$(CONFIG_MFD_TI_AM335X_TSCADC) += ti_am335x_tscadc.o diff --git a/drivers/mfd/lp873x.c b/drivers/mfd/lp873x.c new file mode 100644 index 0000000..54ed0ce --- /dev/null +++ b/drivers/mfd/lp873x.c @@ -0,0 +1,99 @@ +/* + * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/ + * + * Author: Keerthy <j-keerthy@ti.com> + * + * 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 version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/interrupt.h> +#include <linux/mfd/core.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/regmap.h> + +#include <linux/mfd/lp873x.h> + +static const struct regmap_config lp873x_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = LP873X_REG_MAX, +}; + +static const struct mfd_cell lp873x_cells[] = { + { .name = "lp873x-regulator", }, + { .name = "lp873x-gpio", }, +}; + +static int lp873x_probe(struct i2c_client *client, + const struct i2c_device_id *ids) +{ + struct lp873x *lp873; + int ret; + unsigned int otpid; + + lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL); + if (!lp873) + return -ENOMEM; + + lp873->dev = &client->dev; + + lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config); + if (IS_ERR(lp873->regmap)) { + ret = PTR_ERR(lp873->regmap); + dev_err(lp873->dev, "Failed to initialize register map: %d\n", + ret); + return ret; + } + + mutex_init(&lp873->lp873_lock); + + ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid); + if (ret) { + dev_err(lp873->dev, "Failed to read OTP ID\n"); + return ret; + } + + lp873->rev = otpid & LP873X_OTP_REV_OTP_ID; + i2c_set_clientdata(client, lp873); + ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells, + ARRAY_SIZE(lp873x_cells), NULL, 0, NULL); + + return ret; +} + +static const struct of_device_id of_lp873x_match_table[] = { + { .compatible = "ti,lp8733", }, + { .compatible = "ti,lp8732", }, + {} +}; +MODULE_DEVICE_TABLE(of, of_lp873x_match_table); + +static const struct i2c_device_id lp873x_id_table[] = { + { "lp873x", LP873X }, + { "lp8732", LP873X }, + { "lp8733", LP873X }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, lp873x_id_table); + +static struct i2c_driver lp873x_driver = { + .driver = { + .name = "lp873x", + .of_match_table = of_lp873x_match_table, + }, + .probe = lp873x_probe, + .id_table = lp873x_id_table, +}; +module_i2c_driver(lp873x_driver); + +MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>"); +MODULE_DESCRIPTION("LP873X chip family multi-function driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/lp873x.h b/include/linux/mfd/lp873x.h new file mode 100644 index 0000000..fb7ec55 --- /dev/null +++ b/include/linux/mfd/lp873x.h @@ -0,0 +1,264 @@ +/* + * Functions to access LP873X power management chip. + * + * Copyright (C) 2016 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 as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_MFD_LP873X_H +#define __LINUX_MFD_LP873X_H + +#include <linux/i2c.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> + +/* LP873x chip id list */ +#define LP873X 0x00 + +/* All register addresses */ +#define LP873X_REG_DEV_REV 0X00 +#define LP873X_REG_OTP_REV 0X01 +#define LP873X_REG_BUCK0_CTRL_1 0X02 +#define LP873X_REG_BUCK0_CTRL_2 0X03 +#define LP873X_REG_BUCK1_CTRL_1 0X04 +#define LP873X_REG_BUCK1_CTRL_2 0X05 +#define LP873X_REG_BUCK0_VOUT 0X06 +#define LP873X_REG_BUCK1_VOUT 0X07 +#define LP873X_REG_LDO0_CTRL 0X08 +#define LP873X_REG_LDO1_CTRL 0X09 +#define LP873X_REG_LDO0_VOUT 0X0A +#define LP873X_REG_LDO1_VOUT 0X0B +#define LP873X_REG_BUCK0_DELAY 0X0C +#define LP873X_REG_BUCK1_DELAY 0X0D +#define LP873X_REG_LDO0_DELAY 0X0E +#define LP873X_REG_LDO1_DELAY 0X0F +#define LP873X_REG_GPO_DELAY 0X10 +#define LP873X_REG_GPO2_DELAY 0X11 +#define LP873X_REG_GPO_CTRL 0X12 +#define LP873X_REG_CONFIG 0X13 +#define LP873X_REG_PLL_CTRL 0X14 +#define LP873X_REG_PGOOD_CTRL1 0X15 +#define LP873X_REG_PGOOD_CTRL2 0X16 +#define LP873X_REG_PG_FAULT 0X17 +#define LP873X_REG_RESET 0X18 +#define LP873X_REG_INT_TOP_1 0X19 +#define LP873X_REG_INT_TOP_2 0X1A +#define LP873X_REG_INT_BUCK 0X1B +#define LP873X_REG_INT_LDO 0X1C +#define LP873X_REG_TOP_STAT 0X1D +#define LP873X_REG_BUCK_STAT 0X1E +#define LP873X_REG_LDO_STAT 0x1F +#define LP873X_REG_TOP_MASK_1 0x20 +#define LP873X_REG_TOP_MASK_2 0x21 +#define LP873X_REG_BUCK_MASK 0x22 +#define LP873X_REG_LDO_MASK 0x23 +#define LP873X_REG_SEL_I_LOAD 0x24 +#define LP873X_REG_I_LOAD_2 0x25 +#define LP873X_REG_I_LOAD_1 0x26 + +#define LP873X_REG_MAX LP873X_REG_I_LOAD_1 + +/* Register field definitions */ +#define LP873X_DEV_REV_DEV_ID 0xC0 +#define LP873X_DEV_REV_ALL_LAYER 0x30 +#define LP873X_DEV_REV_METAL_LAYER 0x0F + +#define LP873X_OTP_REV_OTP_ID 0xFF + +#define LP873X_BUCK0_CTRL_1_BUCK0_FPWM BIT(3) +#define LP873X_BUCK0_CTRL_1_BUCK0_RDIS_EN BIT(2) +#define LP873X_BUCK0_CTRL_1_BUCK0_EN_PIN_CTRL BIT(1) +#define LP873X_BUCK0_CTRL_1_BUCK0_EN BIT(0) + +#define LP873X_BUCK0_CTRL_2_BUCK0_ILIM 0x38 +#define LP873X_BUCK0_CTRL_2_BUCK0_SLEW_RATE 0x07 + +#define LP873X_BUCK1_CTRL_1_BUCK1_FPWM BIT(3) +#define LP873X_BUCK1_CTRL_1_BUCK1_RDIS_EN BIT(2) +#define LP873X_BUCK1_CTRL_1_BUCK1_EN_PIN_CTRL BIT(1) +#define LP873X_BUCK1_CTRL_1_BUCK1_EN BIT(0) + +#define LP873X_BUCK1_CTRL_2_BUCK1_ILIM 0x38 +#define LP873X_BUCK1_CTRL_2_BUCK1_SLEW_RATE 0x07 + +#define LP873X_BUCK0_VOUT_BUCK0_VSET 0xFF + +#define LP873X_BUCK1_VOUT_BUCK1_VSET 0xFF + +#define LP873X_LDO0_CTRL_LDO0_RDIS_EN BIT(2) +#define LP873X_LDO0_CTRL_LDO0_EN_PIN_CTRL BIT(1) +#define LP873X_LDO0_CTRL_LDO0_EN BIT(0) + +#define LP873X_LDO1_CTRL_LDO1_RDIS_EN BIT(2) +#define LP873X_LDO1_CTRL_LDO1_EN_PIN_CTRL BIT(1) +#define LP873X_LDO1_CTRL_LDO1_EN BIT(0) + +#define LP873X_LDO0_VOUT_LDO0_VSET 0x1F + +#define LP873X_LDO1_VOUT_LDO1_VSET 0x1F + +#define LP873X_BUCK0_DELAY_BUCK0_SD_DELAY 0xF0 +#define LP873X_BUCK0_DELAY_BUCK0_SU_DELAY 0x0F + +#define LP873X_BUCK1_DELAY_BUCK1_SD_DELAY 0xF0 +#define LP873X_BUCK1_DELAY_BUCK1_SU_DELAY 0x0F + +#define LP873X_LDO0_DELAY_LDO0_SD_DELAY 0xF0 +#define LP873X_LDO0_DELAY_LDO0_SU_DELAY 0x0F + +#define LP873X_LDO1_DELAY_LDO1_SD_DELAY 0xF0 +#define LP873X_LDO1_DELAY_LDO1_SU_DELAY 0x0F + +#define LP873X_GPO_DELAY_GPO_SD_DELAY 0xF0 +#define LP873X_GPO_DELAY_GPO_SU_DELAY 0x0F + +#define LP873X_GPO2_DELAY_GPO2_SD_DELAY 0xF0 +#define LP873X_GPO2_DELAY_GPO2_SU_DELAY 0x0F + +#define LP873X_GPO_CTRL_GPO2_OD BIT(6) +#define LP873X_GPO_CTRL_GPO2_EN_PIN_CTRL BIT(5) +#define LP873X_GPO_CTRL_GPO2_EN BIT(4) +#define LP873X_GPO_CTRL_GPO_OD BIT(2) +#define LP873X_GPO_CTRL_GPO_EN_PIN_CTRL BIT(1) +#define LP873X_GPO_CTRL_GPO_EN BIT(0) + +#define LP873X_CONFIG_SU_DELAY_SEL BIT(6) +#define LP873X_CONFIG_SD_DELAY_SEL BIT(5) +#define LP873X_CONFIG_CLKIN_PIN_SEL BIT(4) +#define LP873X_CONFIG_CLKIN_PD BIT(3) +#define LP873X_CONFIG_EN_PD BIT(2) +#define LP873X_CONFIG_TDIE_WARN_LEVEL BIT(1) +#define LP873X_EN_SPREAD_SPEC BIT(0) + +#define LP873X_PLL_CTRL_EN_PLL BIT(6) +#define LP873X_EXT_CLK_FREQ 0x1F + +#define LP873X_PGOOD_CTRL1_PGOOD_POL BIT(7) +#define LP873X_PGOOD_CTRL1_PGOOD_OD BIT(6) +#define LP873X_PGOOD_CTRL1_PGOOD_WINDOW_LDO BIT(5) +#define LP873X_PGOOD_CTRL1_PGOOD_WINDOWN_BUCK BIT(4) +#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_LDO1 BIT(3) +#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_LDO0 BIT(2) +#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_BUCK1 BIT(1) +#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_BUCK0 BIT(0) + +#define LP873X_PGOOD_CTRL2_EN_PGOOD_TWARN BIT(2) +#define LP873X_PGOOD_CTRL2_EN_PG_FAULT_GATE BIT(1) +#define LP873X_PGOOD_CTRL2_PGOOD_MODE BIT(0) + +#define LP873X_PG_FAULT_PG_FAULT_LDO1 BIT(3) +#define LP873X_PG_FAULT_PG_FAULT_LDO0 BIT(2) +#define LP873X_PG_FAULT_PG_FAULT_BUCK1 BIT(1) +#define LP873X_PG_FAULT_PG_FAULT_BUCK0 BIT(0) + +#define LP873X_RESET_SW_RESET BIT(0) + +#define LP873X_INT_TOP_1_PGOOD_INT BIT(7) +#define LP873X_INT_TOP_1_LDO_INT BIT(6) +#define LP873X_INT_TOP_1_BUCK_INT BIT(5) +#define LP873X_INT_TOP_1_SYNC_CLK_INT BIT(4) +#define LP873X_INT_TOP_1_TDIE_SD_INT BIT(3) +#define LP873X_INT_TOP_1_TDIE_WARN_INT BIT(2) +#define LP873X_INT_TOP_1_OVP_INT BIT(1) +#define LP873X_INT_TOP_1_I_MEAS_INT BIT(0) + +#define LP873X_INT_TOP_2_RESET_REG_INT BIT(0) + +#define LP873X_INT_BUCK_BUCK1_PG_INT BIT(6) +#define LP873X_INT_BUCK_BUCK1_SC_INT BIT(5) +#define LP873X_INT_BUCK_BUCK1_ILIM_INT BIT(4) +#define LP873X_INT_BUCK_BUCK0_PG_INT BIT(2) +#define LP873X_INT_BUCK_BUCK0_SC_INT BIT(1) +#define LP873X_INT_BUCK_BUCK0_ILIM_INT BIT(0) + +#define LP873X_INT_LDO_LDO1_PG_INT BIT(6) +#define LP873X_INT_LDO_LDO1_SC_INT BIT(5) +#define LP873X_INT_LDO_LDO1_ILIM_INT BIT(4) +#define LP873X_INT_LDO_LDO0_PG_INT BIT(2) +#define LP873X_INT_LDO_LDO0_SC_INT BIT(1) +#define LP873X_INT_LDO_LDO0_ILIM_INT BIT(0) + +#define LP873X_TOP_STAT_PGOOD_STAT BIT(7) +#define LP873X_TOP_STAT_SYNC_CLK_STAT BIT(4) +#define LP873X_TOP_STAT_TDIE_SD_STAT BIT(3) +#define LP873X_TOP_STAT_TDIE_WARN_STAT BIT(2) +#define LP873X_TOP_STAT_OVP_STAT BIT(1) + +#define LP873X_BUCK_STAT_BUCK1_STAT BIT(7) +#define LP873X_BUCK_STAT_BUCK1_PG_STAT BIT(6) +#define LP873X_BUCK_STAT_BUCK1_ILIM_STAT BIT(4) +#define LP873X_BUCK_STAT_BUCK0_STAT BIT(3) +#define LP873X_BUCK_STAT_BUCK0_PG_STAT BIT(2) +#define LP873X_BUCK_STAT_BUCK0_ILIM_STAT BIT(0) + +#define LP873X_LDO_STAT_LDO1_STAT BIT(7) +#define LP873X_LDO_STAT_LDO1_PG_STAT BIT(6) +#define LP873X_LDO_STAT_LDO1_ILIM_STAT BIT(4) +#define LP873X_LDO_STAT_LDO0_STAT BIT(3) +#define LP873X_LDO_STAT_LDO0_PG_STAT BIT(2) +#define LP873X_LDO_STAT_LDO0_ILIM_STAT BIT(0) + +#define LP873X_TOP_MASK_1_PGOOD_INT_MASK BIT(7) +#define LP873X_TOP_MASK_1_SYNC_CLK_MASK BIT(4) +#define LP873X_TOP_MASK_1_TDIE_WARN_MASK BIT(2) +#define LP873X_TOP_MASK_1_I_MEAS_MASK BIT(0) + +#define LP873X_TOP_MASK_2_RESET_REG_MASK BIT(0) + +#define LP873X_BUCK_MASK_BUCK1_PGF_MASK BIT(7) +#define LP873X_BUCK_MASK_BUCK1_PGR_MASK BIT(6) +#define LP873X_BUCK_MASK_BUCK1_ILIM_MASK BIT(4) +#define LP873X_BUCK_MASK_BUCK0_PGF_MASK BIT(3) +#define LP873X_BUCK_MASK_BUCK0_PGR_MASK BIT(2) +#define LP873X_BUCK_MASK_BUCK0_ILIM_MASK BIT(0) + +#define LP873X_LDO_MASK_LDO1_PGF_MASK BIT(7) +#define LP873X_LDO_MASK_LDO1_PGR_MASK BIT(6) +#define LP873X_LDO_MASK_LDO1_ILIM_MASK BIT(4) +#define LP873X_LDO_MASK_LDO0_PGF_MASK BIT(3) +#define LP873X_LDO_MASK_LDO0_PGR_MASK BIT(2) +#define LP873X_LDO_MASK_LDO0_ILIM_MASK BIT(0) + +#define LP873X_SEL_I_LOAD_CURRENT_BUCK_SELECT BIT(0) + +#define LP873X_I_LOAD_2_BUCK_LOAD_CURRENT BIT(0) + +#define LP873X_I_LOAD_1_BUCK_LOAD_CURRENT 0xFF + +#define LP873X_MAX_REG_ID LP873X_LDO_1 + +/* Number of step-down converters available */ +#define LP873X_NUM_BUCK 2 +/* Number of LDO voltage regulators available */ +#define LP873X_NUM_LDO 2 +/* Number of total regulators available */ +#define LP873X_NUM_REGULATOR (LP873X_NUM_BUCK + LP873X_NUM_LDO) + +enum lp873x_regulator_id { + /* BUCK's */ + LP873X_BUCK_0, + LP873X_BUCK_1, + /* LDOs */ + LP873X_LDO_0, + LP873X_LDO_1, +}; + +/** + * struct lp873x - state holder for the lp873x driver + * Device data may be used to access the LP873X chip + */ +struct lp873x { + struct device *dev; + u8 rev; + struct mutex lp873_lock; /* lock guarding the data structure */ + struct regmap *regmap; +}; +#endif /* __LINUX_MFD_LP873X_H */
The LP873X chip is a power management IC for Portable Navigation Systems and Tablet Computing devices. It contains the following components: - Regulators. - Configurable General Purpose Output Signals(GPO). PMIC interacts with the main processor through i2c. PMIC has couple of LDOs(Linear Regulators), couple of BUCKs (Step-Down DC-DC Converter Cores) and GPOs(General Purpose Output Signals). Signed-off-by: Keerthy <j-keerthy@ti.com> --- Changes in v4: * Added Author. * Added the mfd_cell for gpio. Changes in v3: * Reordered the probe code. * Fixed Typo in Kconfig description. * Removed unused member from struct lp873x. drivers/mfd/Kconfig | 14 +++ drivers/mfd/Makefile | 2 + drivers/mfd/lp873x.c | 99 +++++++++++++++++ include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 379 insertions(+) create mode 100644 drivers/mfd/lp873x.c create mode 100644 include/linux/mfd/lp873x.h