On Tue, Mar 18, 2014 at 07:27:09AM -0700, Robert Coulson wrote: > On Fri, Mar 14, 2014 at 7:40 PM, Guenter Roeck <linux@xxxxxxxxxxxx> wrote: > > > The chip's programming interface is quite similar to LTC3880 > > and supports the same set of sensors. > > > > Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> > > --- > > Documentation/hwmon/ltc2978 | 17 +++++++++++------ > > drivers/hwmon/pmbus/ltc2978.c | 20 +++++++++++--------- > > 2 files changed, 22 insertions(+), 15 deletions(-) > > > > diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978 > > index a0546fc..686c078 100644 > > --- a/Documentation/hwmon/ltc2978 > > +++ b/Documentation/hwmon/ltc2978 > > @@ -23,6 +23,10 @@ Supported chips: > > Prefix: 'ltc3883' > > Addresses scanned: - > > Datasheet: http://www.linear.com/product/ltc3883 > > + * Linear Technology LTM4676 > > + Prefix: 'ltm4676' > > + Addresses scanned: - > > + Datasheet: http://www.linear.com/product/ltm4676 > > > > Author: Guenter Roeck <linux@xxxxxxxxxxxx> > > > > @@ -33,7 +37,8 @@ Description > > LTC2974 is a quad digital power supply manager. LTC2978 is an octal power > > supply > > monitor. LTC2977 is a pin compatible replacement for LTC2978. LTC3880 is > > a dual > > output poly-phase step-down DC/DC controller. LTC3883 is a single phase > > -step-down DC/DC controller. > > +step-down DC/DC controller. LTM4676 is a dual 13A or single 26A uModule > > +regulator. > > > > > > Usage Notes > > @@ -75,7 +80,7 @@ in[N]_label "vout[1-8]". > > LTC2974: N=2-5 > > LTC2977: N=2-9 > > LTC2978: N=2-9 > > - LTC3880: N=2-3 > > + LTC3880, LTM4676: N=2-3 > > LTC3883: N=2 > > in[N]_input Measured output voltage. > > in[N]_min Minimum output voltage. > > @@ -95,7 +100,7 @@ temp[N]_input Measured temperature. > > and temp5 reports the chip temperature. > > On LTC2977 and LTC2978, only one temperature > > measurement > > is supported and reports the chip temperature. > > - On LTC3880, temp1 and temp2 report external > > + On LTC3880 and LTM4676, temp1 and temp2 report > > external > > temperatures, and temp3 reports the chip > > temperature. > > On LTC3883, temp1 reports an external temperature, > > and temp2 reports the chip temperature. > > @@ -123,11 +128,11 @@ power[N]_label "pout[1-4]". > > LTC2974: N=1-4 > > LTC2977: Not supported > > LTC2978: Not supported > > - LTC3880: N=1-2 > > + LTC3880, LTM4676: N=1-2 > > LTC3883: N=2 > > power[N]_input Measured output power. > > > > -curr1_label "iin". LTC3880 and LTC3883 only. > > +curr1_label "iin". LTC3880, LTC3883, and LTM4676 only. > > curr1_input Measured input current. > > curr1_max Maximum input current. > > curr1_max_alarm Input current high alarm. > > @@ -138,7 +143,7 @@ curr[N]_label "iout[1-4]". > > LTC2974: N=1-4 > > LTC2977: not supported > > LTC2978: not supported > > - LTC3880: N=2-3 > > + LTC3880, LTM4676: N=2-3 > > LTC3883: N=2 > > curr[N]_input Measured output current. > > curr[N]_max Maximum output current. > > diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c > > index 629bfe0..e24ed52 100644 > > --- a/drivers/hwmon/pmbus/ltc2978.c > > +++ b/drivers/hwmon/pmbus/ltc2978.c > > @@ -1,9 +1,9 @@ > > /* > > * Hardware monitoring driver for LTC2974, LTC2977, LTC2978, LTC3880, > > - * and LTC3883 > > + * LTC3883, and LTM4676 > > * > > * Copyright (c) 2011 Ericsson AB. > > - * Copyright (c) 2013 Guenter Roeck > > + * Copyright (c) 2013, 2014 Guenter Roeck > > * > > * 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 > > @@ -14,10 +14,6 @@ > > * 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. > > - * > > - * You should have received a copy of the GNU General Public License > > - * along with this program; if not, write to the Free Software > > - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. > > */ > > > > #include <linux/kernel.h> > > @@ -28,7 +24,7 @@ > > #include <linux/i2c.h> > > #include "pmbus.h" > > > > -enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 }; > > +enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883, ltm4676 }; > > > > /* Common for all chips */ > > #define LTC2978_MFR_VOUT_PEAK 0xdd > > @@ -45,7 +41,7 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 > > }; > > #define LTC2974_MFR_IOUT_PEAK 0xd7 > > #define LTC2974_MFR_IOUT_MIN 0xd8 > > > > -/* LTC3880 and LTC3883 */ > > +/* LTC3880, LTC3883, and LTM4676 */ > > #define LTC3880_MFR_IOUT_PEAK 0xd7 > > #define LTC3880_MFR_CLEAR_PEAKS 0xe3 > > #define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4 > > @@ -63,6 +59,8 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 > > }; > > #define LTC3880_ID_MASK 0xff00 > > #define LTC3883_ID 0x4300 > > #define LTC3883_ID_MASK 0xff00 > > +#define LTM4676_ID 0x4480 /* datasheet claims 0x440X > > */ > > +#define LTM4676_ID_MASK 0xfff0 > > > > #define LTC2974_NUM_PAGES 4 > > #define LTC2978_NUM_PAGES 8 > > @@ -371,6 +369,7 @@ static const struct i2c_device_id ltc2978_id[] = { > > {"ltc2978", ltc2978}, > > {"ltc3880", ltc3880}, > > {"ltc3883", ltc3883}, > > + {"ltm4676", ltm4676}, > > {} > > }; > > MODULE_DEVICE_TABLE(i2c, ltc2978_id); > > @@ -406,6 +405,8 @@ static int ltc2978_probe(struct i2c_client *client, > > data->id = ltc3880; > > } else if ((chip_id & LTC3883_ID_MASK) == LTC3883_ID) { > > data->id = ltc3883; > > + } else if ((chip_id & LTM4676_ID_MASK) == LTM4676_ID) { > > + data->id = ltm4676; > > } else { > > dev_err(&client->dev, "Unsupported chip ID 0x%x\n", > > chip_id); > > return -ENODEV; > > @@ -459,6 +460,7 @@ static int ltc2978_probe(struct i2c_client *client, > > } > > break; > > case ltc3880: > > + case ltm4676: > > info->read_word_data = ltc3880_read_word_data; > > info->pages = LTC3880_NUM_PAGES; > > info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN > > @@ -501,5 +503,5 @@ static struct i2c_driver ltc2978_driver = { > > module_i2c_driver(ltc2978_driver); > > > > MODULE_AUTHOR("Guenter Roeck"); > > -MODULE_DESCRIPTION("PMBus driver for LTC2974, LTC2978, LTC3880, and > > LTC3883"); > > +MODULE_DESCRIPTION("PMBus driver for LTC2974, LTC2978, LTC3880, LTC3883, > > and LTM4676"); > > MODULE_LICENSE("GPL"); > > -- > > 1.7.9.7 > > > > > > _______________________________________________ > > lm-sensors mailing list > > lm-sensors@xxxxxxxxxxxxxx > > http://lists.lm-sensors.org/mailman/listinfo/lm-sensors > > > > > Hello Guenter, > > the changes look fine to me; the chip ID difference between the datasheet > and value read is odd, but the comment helps. Did you inform the > manufacturer of the difference? > Not yet, but good idea. Guenter _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
