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Mon, 28 Oct 2024 21:38:03 -0400 From: Mariel Tinaco To: , , , Guenter Roeck , Jean Delvare , Delphine CC Chiu , "Jonathan Corbet" , , , Frank Li , Conor Dooley , Krzysztof Kozlowski , Rob Herring Subject: [PATCH 3/3] hwmon: (pmbus/ltc2978) add support for ltc7841 Date: Tue, 29 Oct 2024 09:37:34 +0800 Message-ID: <20241029013734.293024-4-Mariel.Tinaco@analog.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241029013734.293024-1-Mariel.Tinaco@analog.com> References: <20241029013734.293024-1-Mariel.Tinaco@analog.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: mYpGhXks3Cff0-9Btl0zeXOKFeTiXbdy X-Proofpoint-ORIG-GUID: mYpGhXks3Cff0-9Btl0zeXOKFeTiXbdy X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 suspectscore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 clxscore=1015 adultscore=0 bulkscore=0 impostorscore=0 malwarescore=0 lowpriorityscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410290011 Add support for LTC7841. The LTC7841 is a high performance PolyPhase® single output synchronous boost converter controller. Multiphase operation reduces input and output capacitor requirements and allows the use of smaller inductors than the single-phase equivalent. The relevant registers in the LTC7841 are similar to the LTC7880, only reduced by some amount. So it's just a matter of adding the chip id. The device also doesn't support polling, on top of the reduced register set, so a separate case for setting the chip info is added. Signed-off-by: Mariel Tinaco Reviewed-by: Guenter Roeck --- drivers/hwmon/pmbus/Kconfig | 6 +++--- drivers/hwmon/pmbus/ltc2978.c | 20 ++++++++++++++++++-- 2 files changed, 21 insertions(+), 5 deletions(-) diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index a4f02cad92fd..f6d352841953 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -224,9 +224,9 @@ config SENSORS_LTC2978_REGULATOR depends on SENSORS_LTC2978 && REGULATOR help If you say yes here you get regulator support for Linear Technology - LTC3880, LTC3883, LTC3884, LTC3886, LTC3887, LTC3889, LTC7880, - LTM4644, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680, LTM4686, - and LTM4700. + LTC3880, LTC3883, LTC3884, LTC3886, LTC3887, LTC3889, LTC7841, + LTC7880, LTM4644, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680, + LTM4686, and LTM4700. config SENSORS_LTC3815 tristate "Linear Technologies LTC3815" diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index 73a86f4d6472..a6eb4d4b5487 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -23,7 +23,8 @@ enum chips { /* Managers */ ltc2972, ltc2974, ltc2975, ltc2977, ltc2978, ltc2979, ltc2980, /* Controllers */ - ltc3880, ltc3882, ltc3883, ltc3884, ltc3886, ltc3887, ltc3889, ltc7132, ltc7880, + ltc3880, ltc3882, ltc3883, ltc3884, ltc3886, ltc3887, ltc3889, ltc7132, + ltc7841, ltc7880, /* Modules */ ltm2987, ltm4664, ltm4675, ltm4676, ltm4677, ltm4678, ltm4680, ltm4686, ltm4700, @@ -50,7 +51,7 @@ enum chips { #define LTC3880_MFR_CLEAR_PEAKS 0xe3 #define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4 -/* LTC3883, LTC3884, LTC3886, LTC3889, LTC7132, LTC7880 */ +/* LTC3883, LTC3884, LTC3886, LTC3889, LTC7132, LTC7841 and LTC7880 only */ #define LTC3883_MFR_IIN_PEAK 0xe1 /* LTC2975 only */ @@ -80,6 +81,7 @@ enum chips { #define LTC3887_ID 0x4700 #define LTC3889_ID 0x4900 #define LTC7132_ID 0x4CE0 +#define LTC7841_ID 0x40D0 #define LTC7880_ID 0x49E0 #define LTM2987_ID_A 0x8010 /* A/B for two die IDs */ #define LTM2987_ID_B 0x8020 @@ -548,6 +550,7 @@ static const struct i2c_device_id ltc2978_id[] = { {"ltc3887", ltc3887}, {"ltc3889", ltc3889}, {"ltc7132", ltc7132}, + {"ltc7841", ltc7841}, {"ltc7880", ltc7880}, {"ltm2987", ltm2987}, {"ltm4664", ltm4664}, @@ -654,6 +657,8 @@ static int ltc2978_get_id(struct i2c_client *client) return ltc3889; else if (chip_id == LTC7132_ID) return ltc7132; + else if (chip_id == LTC7841_ID) + return ltc7841; else if (chip_id == LTC7880_ID) return ltc7880; else if (chip_id == LTM2987_ID_A || chip_id == LTM2987_ID_B) @@ -854,6 +859,16 @@ static int ltc2978_probe(struct i2c_client *client) | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; break; + case ltc7841: + data->features |= FEAT_CLEAR_PEAKS; + info->read_word_data = ltc3883_read_word_data; + info->pages = LTC3883_NUM_PAGES; + info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN + | PMBUS_HAVE_STATUS_INPUT + | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_IOUT + | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; + break; default: return -ENODEV; } @@ -907,6 +922,7 @@ static const struct of_device_id ltc2978_of_match[] = { { .compatible = "lltc,ltc3887" }, { .compatible = "lltc,ltc3889" }, { .compatible = "lltc,ltc7132" }, + { .compatible = "lltc,ltc7841" }, { .compatible = "lltc,ltc7880" }, { .compatible = "lltc,ltm2987" }, { .compatible = "lltc,ltm4664" },