| Message ID | 1504130534-114811-1-git-send-email-vadimp@mellanox.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
On Wed, Aug 30, 2017 at 10:02:14PM +0000, Vadim Pasternak wrote: > The below lists of VOUT_MODE command readout with their related VID > protocols, Digital to Analog Converter steps, supported by the device: > VR12.0 mode, 5-mV DAC - 0x21 > VR12.5 mode, 10-mV DAC - 0x22 > VR13.0 mode, 10-mV DAC - 0x24 > IMVP8 mode, 5-mV DAC - 0x25 > VR13.0 mode, 5-mV DAC - 0x27 > > Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Applied to hwmon-next. Minor comment below for reference (though many hwmon drivers do that wrong as well). For future patches, please remember to tag the subject line with the subsystem and, if appropriate, the affected driver. Thanks, Guenter > --- > v1->v2 > Comments pointed out by Guenter: > - arrange includes in alphabetic order; > - remove tps53679_data, since it's used only in tps53679_identify; > - drop redundant comment; > - drop id field in tps53679_id; > --- > drivers/hwmon/pmbus/Kconfig | 10 ++++ > drivers/hwmon/pmbus/Makefile | 1 + > drivers/hwmon/pmbus/tps53679.c | 113 +++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 124 insertions(+) > create mode 100644 drivers/hwmon/pmbus/tps53679.c > > diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig > index 68d717a..42d2366 100644 > --- a/drivers/hwmon/pmbus/Kconfig > +++ b/drivers/hwmon/pmbus/Kconfig > @@ -135,6 +135,16 @@ config SENSORS_TPS40422 > This driver can also be built as a module. If so, the module will > be called tps40422. > > +config SENSORS_TPS53679 > + tristate "TI TPS53679" > + default n > + help > + If you say yes here you get hardware monitoring support for TI > + TPS53679. > + > + This driver can also be built as a module. If so, the module will > + be called tps53679. > + > config SENSORS_UCD9000 > tristate "TI UCD90120, UCD90124, UCD90160, UCD9090, UCD90910" > default n > diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile > index 75bb7ca..c7c76b0 100644 > --- a/drivers/hwmon/pmbus/Makefile > +++ b/drivers/hwmon/pmbus/Makefile > @@ -14,6 +14,7 @@ obj-$(CONFIG_SENSORS_MAX20751) += max20751.o > obj-$(CONFIG_SENSORS_MAX34440) += max34440.o > obj-$(CONFIG_SENSORS_MAX8688) += max8688.o > obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o > +obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o > obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o > obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o > obj-$(CONFIG_SENSORS_ZL6100) += zl6100.o > diff --git a/drivers/hwmon/pmbus/tps53679.c b/drivers/hwmon/pmbus/tps53679.c > new file mode 100644 > index 0000000..85b515c > --- /dev/null > +++ b/drivers/hwmon/pmbus/tps53679.c > @@ -0,0 +1,113 @@ > +/* > + * Hardware monitoring driver for Texas Instruments TPS53679 > + * > + * Copyright (c) 2017 Mellanox Technologies. All rights reserved. > + * Copyright (c) 2017 Vadim Pasternak <vadimp@mellanox.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; either version 2 of the License, or > + * (at your option) any later version. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + */ > + > +#include <linux/err.h> > +#include <linux/i2c.h> > +#include <linux/init.h> > +#include <linux/kernel.h> > +#include <linux/module.h> > +#include "pmbus.h" > + > +#define TPS53679_PROT_VR12_5MV 0x01 /* VR12.0 mode, 5-mV DAC */ > +#define TPS53679_PROT_VR12_5_10MV 0x02 /* VR12.5 mode, 10-mV DAC */ > +#define TPS53679_PROT_VR13_10MV 0x04 /* VR13.0 mode, 10-mV DAC */ > +#define TPS53679_PROT_IMVP8_5MV 0x05 /* IMVP8 mode, 5-mV DAC */ > +#define TPS53679_PROT_VR13_5MV 0x07 /* VR13.0 mode, 5-mV DAC */ > +#define TPS53679_PAGE_NUM 2 > + > +static int tps53679_identify(struct i2c_client *client, > + struct pmbus_driver_info *info) > +{ > + u8 vout_params; > + int ret; > + > + /* Read the register with VOUT scaling value.*/ > + ret = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE); > + if (ret < 0) > + return ret; > + > + vout_params = ret & GENMASK(4, 0); > + > + switch (vout_params) { > + case TPS53679_PROT_VR13_10MV: > + case TPS53679_PROT_VR12_5_10MV: > + info->vrm_version = vr13; > + break; > + case TPS53679_PROT_VR13_5MV: > + case TPS53679_PROT_VR12_5MV: > + case TPS53679_PROT_IMVP8_5MV: > + info->vrm_version = vr12; > + break; > + default: > + return -EINVAL; > + } > + > + return 0; > +} > + > +static struct pmbus_driver_info tps53679_info = { > + .pages = TPS53679_PAGE_NUM, > + .format[PSC_VOLTAGE_IN] = linear, > + .format[PSC_VOLTAGE_OUT] = vid, > + .format[PSC_TEMPERATURE] = linear, > + .format[PSC_CURRENT_OUT] = linear, > + .format[PSC_POWER] = linear, > + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | > + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | > + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | > + PMBUS_HAVE_POUT, > + .func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | > + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | > + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | > + PMBUS_HAVE_POUT, > + .identify = tps53679_identify, > +}; > + > +static int tps53679_probe(struct i2c_client *client, > + const struct i2c_device_id *id) > +{ > + return pmbus_do_probe(client, id, &tps53679_info); > +} > + > +static const struct i2c_device_id tps53679_id[] = { > + {"tps53679", 0}, > + {} > +}; > + > +MODULE_DEVICE_TABLE(i2c, tps53679_id); > + > +static const struct of_device_id tps53679_of_match[] = { > + {.compatible = "ti,tps53679"}, > + {} > +}; > +MODULE_DEVICE_TABLE(of, tps53679_of_match); > + > +static struct i2c_driver tps53679_driver = { > + .driver = { > + .name = "tps53679", > + .of_match_table = of_match_ptr(tps53679_of_match), > + }, > + .probe = tps53679_probe, > + .remove = pmbus_do_remove, > + .id_table = tps53679_id, > +}; > + > +module_i2c_driver(tps53679_driver); > + > +MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>"); > +MODULE_DESCRIPTION("PMBus driver for Texas Instruments TPS53679"); > +MODULE_LICENSE("GPL"); > -- > 2.1.4 > -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
> -----Original Message----- > From: Guenter Roeck [mailto:groeck7@gmail.com] On Behalf Of Guenter > Roeck > Sent: Thursday, August 31, 2017 7:02 AM > To: Vadim Pasternak <vadimp@mellanox.com> > Cc: linux-hwmon@vger.kernel.org; jiri@resnulli.us > Subject: Re: [patch v2 1/1] Add support for Texas Instruments tps53679 > device > > On Wed, Aug 30, 2017 at 10:02:14PM +0000, Vadim Pasternak wrote: > > The below lists of VOUT_MODE command readout with their related VID > > protocols, Digital to Analog Converter steps, supported by the device: > > VR12.0 mode, 5-mV DAC - 0x21 > > VR12.5 mode, 10-mV DAC - 0x22 > > VR13.0 mode, 10-mV DAC - 0x24 > > IMVP8 mode, 5-mV DAC - 0x25 > > VR13.0 mode, 5-mV DAC - 0x27 > > > > Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> > > Applied to hwmon-next. Minor comment below for reference (though many > hwmon drivers do that wrong as well). > > For future patches, please remember to tag the subject line with the > subsystem and, if appropriate, the affected driver. Hi Guenter, Thank you for taking it to hwmon-next and for your comment. Next time will do it in right way. Thanks, Vadim. > > Thanks, > Guenter > > > --- > > v1->v2 > > Comments pointed out by Guenter: > > - arrange includes in alphabetic order; > > - remove tps53679_data, since it's used only in tps53679_identify; > > - drop redundant comment; > > - drop id field in tps53679_id; > > --- > > drivers/hwmon/pmbus/Kconfig | 10 ++++ > > drivers/hwmon/pmbus/Makefile | 1 + > > drivers/hwmon/pmbus/tps53679.c | 113 > > +++++++++++++++++++++++++++++++++++++++++ > > 3 files changed, 124 insertions(+) > > create mode 100644 drivers/hwmon/pmbus/tps53679.c > > > > diff --git a/drivers/hwmon/pmbus/Kconfig > b/drivers/hwmon/pmbus/Kconfig > > index 68d717a..42d2366 100644 > > --- a/drivers/hwmon/pmbus/Kconfig > > +++ b/drivers/hwmon/pmbus/Kconfig > > @@ -135,6 +135,16 @@ config SENSORS_TPS40422 > > This driver can also be built as a module. If so, the module will > > be called tps40422. > > > > +config SENSORS_TPS53679 > > + tristate "TI TPS53679" > > + default n > > + help > > + If you say yes here you get hardware monitoring support for TI > > + TPS53679. > > + > > + This driver can also be built as a module. If so, the module will > > + be called tps53679. > > + > > config SENSORS_UCD9000 > > tristate "TI UCD90120, UCD90124, UCD90160, UCD9090, UCD90910" > > default n > > diff --git a/drivers/hwmon/pmbus/Makefile > > b/drivers/hwmon/pmbus/Makefile index 75bb7ca..c7c76b0 100644 > > --- a/drivers/hwmon/pmbus/Makefile > > +++ b/drivers/hwmon/pmbus/Makefile > > @@ -14,6 +14,7 @@ obj-$(CONFIG_SENSORS_MAX20751) += > max20751.o > > obj-$(CONFIG_SENSORS_MAX34440) += max34440.o > > obj-$(CONFIG_SENSORS_MAX8688) += max8688.o > > obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o > > +obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o > > obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o > > obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o > > obj-$(CONFIG_SENSORS_ZL6100) += zl6100.o > > diff --git a/drivers/hwmon/pmbus/tps53679.c > > b/drivers/hwmon/pmbus/tps53679.c new file mode 100644 index > > 0000000..85b515c > > --- /dev/null > > +++ b/drivers/hwmon/pmbus/tps53679.c > > @@ -0,0 +1,113 @@ > > +/* > > + * Hardware monitoring driver for Texas Instruments TPS53679 > > + * > > + * Copyright (c) 2017 Mellanox Technologies. All rights reserved. > > + * Copyright (c) 2017 Vadim Pasternak <vadimp@mellanox.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; either version 2 of the License, or > > + * (at your option) any later version. > > + * > > + * This program is distributed in the hope that it will be useful, > > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > > + * GNU General Public License for more details. > > + */ > > + > > +#include <linux/err.h> > > +#include <linux/i2c.h> > > +#include <linux/init.h> > > +#include <linux/kernel.h> > > +#include <linux/module.h> > > +#include "pmbus.h" > > + > > +#define TPS53679_PROT_VR12_5MV 0x01 /* VR12.0 mode, 5-mV > DAC */ > > +#define TPS53679_PROT_VR12_5_10MV 0x02 /* VR12.5 mode, 10-mV > DAC */ > > +#define TPS53679_PROT_VR13_10MV 0x04 /* VR13.0 mode, > 10-mV DAC */ > > +#define TPS53679_PROT_IMVP8_5MV 0x05 /* IMVP8 mode, > 5-mV DAC */ > > +#define TPS53679_PROT_VR13_5MV 0x07 /* VR13.0 mode, 5-mV > DAC */ > > +#define TPS53679_PAGE_NUM 2 > > + > > +static int tps53679_identify(struct i2c_client *client, > > + struct pmbus_driver_info *info) { > > + u8 vout_params; > > + int ret; > > + > > + /* Read the register with VOUT scaling value.*/ > > + ret = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE); > > + if (ret < 0) > > + return ret; > > + > > + vout_params = ret & GENMASK(4, 0); > > + > > + switch (vout_params) { > > + case TPS53679_PROT_VR13_10MV: > > + case TPS53679_PROT_VR12_5_10MV: > > + info->vrm_version = vr13; > > + break; > > + case TPS53679_PROT_VR13_5MV: > > + case TPS53679_PROT_VR12_5MV: > > + case TPS53679_PROT_IMVP8_5MV: > > + info->vrm_version = vr12; > > + break; > > + default: > > + return -EINVAL; > > + } > > + > > + return 0; > > +} > > + > > +static struct pmbus_driver_info tps53679_info = { > > + .pages = TPS53679_PAGE_NUM, > > + .format[PSC_VOLTAGE_IN] = linear, > > + .format[PSC_VOLTAGE_OUT] = vid, > > + .format[PSC_TEMPERATURE] = linear, > > + .format[PSC_CURRENT_OUT] = linear, > > + .format[PSC_POWER] = linear, > > + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | > PMBUS_HAVE_STATUS_VOUT | > > + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | > > + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | > > + PMBUS_HAVE_POUT, > > + .func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | > PMBUS_HAVE_STATUS_VOUT | > > + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | > > + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | > > + PMBUS_HAVE_POUT, > > + .identify = tps53679_identify, > > +}; > > + > > +static int tps53679_probe(struct i2c_client *client, > > + const struct i2c_device_id *id) > > +{ > > + return pmbus_do_probe(client, id, &tps53679_info); } > > + > > +static const struct i2c_device_id tps53679_id[] = { > > + {"tps53679", 0}, > > + {} > > +}; > > + > > +MODULE_DEVICE_TABLE(i2c, tps53679_id); > > + > > +static const struct of_device_id tps53679_of_match[] = { > > + {.compatible = "ti,tps53679"}, > > + {} > > +}; > > +MODULE_DEVICE_TABLE(of, tps53679_of_match); > > + > > +static struct i2c_driver tps53679_driver = { > > + .driver = { > > + .name = "tps53679", > > + .of_match_table = of_match_ptr(tps53679_of_match), > > + }, > > + .probe = tps53679_probe, > > + .remove = pmbus_do_remove, > > + .id_table = tps53679_id, > > +}; > > + > > +module_i2c_driver(tps53679_driver); > > + > > +MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>"); > > +MODULE_DESCRIPTION("PMBus driver for Texas Instruments TPS53679"); > > +MODULE_LICENSE("GPL"); > > -- > > 2.1.4 > > -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 68d717a..42d2366 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -135,6 +135,16 @@ config SENSORS_TPS40422 This driver can also be built as a module. If so, the module will be called tps40422. +config SENSORS_TPS53679 + tristate "TI TPS53679" + default n + help + If you say yes here you get hardware monitoring support for TI + TPS53679. + + This driver can also be built as a module. If so, the module will + be called tps53679. + config SENSORS_UCD9000 tristate "TI UCD90120, UCD90124, UCD90160, UCD9090, UCD90910" default n diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 75bb7ca..c7c76b0 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_SENSORS_MAX20751) += max20751.o obj-$(CONFIG_SENSORS_MAX34440) += max34440.o obj-$(CONFIG_SENSORS_MAX8688) += max8688.o obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o +obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o obj-$(CONFIG_SENSORS_ZL6100) += zl6100.o diff --git a/drivers/hwmon/pmbus/tps53679.c b/drivers/hwmon/pmbus/tps53679.c new file mode 100644 index 0000000..85b515c --- /dev/null +++ b/drivers/hwmon/pmbus/tps53679.c @@ -0,0 +1,113 @@ +/* + * Hardware monitoring driver for Texas Instruments TPS53679 + * + * Copyright (c) 2017 Mellanox Technologies. All rights reserved. + * Copyright (c) 2017 Vadim Pasternak <vadimp@mellanox.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; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include "pmbus.h" + +#define TPS53679_PROT_VR12_5MV 0x01 /* VR12.0 mode, 5-mV DAC */ +#define TPS53679_PROT_VR12_5_10MV 0x02 /* VR12.5 mode, 10-mV DAC */ +#define TPS53679_PROT_VR13_10MV 0x04 /* VR13.0 mode, 10-mV DAC */ +#define TPS53679_PROT_IMVP8_5MV 0x05 /* IMVP8 mode, 5-mV DAC */ +#define TPS53679_PROT_VR13_5MV 0x07 /* VR13.0 mode, 5-mV DAC */ +#define TPS53679_PAGE_NUM 2 + +static int tps53679_identify(struct i2c_client *client, + struct pmbus_driver_info *info) +{ + u8 vout_params; + int ret; + + /* Read the register with VOUT scaling value.*/ + ret = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE); + if (ret < 0) + return ret; + + vout_params = ret & GENMASK(4, 0); + + switch (vout_params) { + case TPS53679_PROT_VR13_10MV: + case TPS53679_PROT_VR12_5_10MV: + info->vrm_version = vr13; + break; + case TPS53679_PROT_VR13_5MV: + case TPS53679_PROT_VR12_5MV: + case TPS53679_PROT_IMVP8_5MV: + info->vrm_version = vr12; + break; + default: + return -EINVAL; + } + + return 0; +} + +static struct pmbus_driver_info tps53679_info = { + .pages = TPS53679_PAGE_NUM, + .format[PSC_VOLTAGE_IN] = linear, + .format[PSC_VOLTAGE_OUT] = vid, + .format[PSC_TEMPERATURE] = linear, + .format[PSC_CURRENT_OUT] = linear, + .format[PSC_POWER] = linear, + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_POUT, + .func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_POUT, + .identify = tps53679_identify, +}; + +static int tps53679_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + return pmbus_do_probe(client, id, &tps53679_info); +} + +static const struct i2c_device_id tps53679_id[] = { + {"tps53679", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, tps53679_id); + +static const struct of_device_id tps53679_of_match[] = { + {.compatible = "ti,tps53679"}, + {} +}; +MODULE_DEVICE_TABLE(of, tps53679_of_match); + +static struct i2c_driver tps53679_driver = { + .driver = { + .name = "tps53679", + .of_match_table = of_match_ptr(tps53679_of_match), + }, + .probe = tps53679_probe, + .remove = pmbus_do_remove, + .id_table = tps53679_id, +}; + +module_i2c_driver(tps53679_driver); + +MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>"); +MODULE_DESCRIPTION("PMBus driver for Texas Instruments TPS53679"); +MODULE_LICENSE("GPL");
The below lists of VOUT_MODE command readout with their related VID protocols, Digital to Analog Converter steps, supported by the device: VR12.0 mode, 5-mV DAC - 0x21 VR12.5 mode, 10-mV DAC - 0x22 VR13.0 mode, 10-mV DAC - 0x24 IMVP8 mode, 5-mV DAC - 0x25 VR13.0 mode, 5-mV DAC - 0x27 Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> --- v1->v2 Comments pointed out by Guenter: - arrange includes in alphabetic order; - remove tps53679_data, since it's used only in tps53679_identify; - drop redundant comment; - drop id field in tps53679_id; --- drivers/hwmon/pmbus/Kconfig | 10 ++++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/tps53679.c | 113 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 124 insertions(+) create mode 100644 drivers/hwmon/pmbus/tps53679.c