[PATCH v1 0/3] Support XDPE112

[PATCH v1 0/3] Support XDPE112

[Marcello Sylvester Bauer]

Add support for Infineon Multi-phase XDPE112 family regulator. The main
difference to the XDPE122 family is it uses a different format for
voltage out. Add the required logic to the existing  xdpe12284 driver
accordingly.

Marcello Sylvester Bauer (3):
  dt-bindings: trivial-devices: Add xdpe11280
  hwmon (xdpe12284): Add support for xdpe11280
  hwmon (xdpe12284): Add regulator support

 .../devicetree/bindings/trivial-devices.yaml  |  2 ++
 Documentation/hwmon/xdpe12284.rst             | 10 +++++--
 drivers/hwmon/pmbus/Kconfig                   |  6 ++++
 drivers/hwmon/pmbus/xdpe12284.c               | 28 ++++++++++++++++++-
 4 files changed, 42 insertions(+), 4 deletions(-)

-- 
2.34.1

[PATCH v1 1/3] dt-bindings: trivial-devices: Add xdpe11280

[Marcello Sylvester Bauer]

Add Infineon Multi-phase Digital Controller XDPE11280.

Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
---
 Documentation/devicetree/bindings/trivial-devices.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index 091792ba993e..8a42aea3b8a6 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -137,6 +137,8 @@ properties:
           - infineon,slb9645tt
             # Infineon TLV493D-A1B6 I2C 3D Magnetic Sensor
           - infineon,tlv493d-a1b6
+            # Infineon Multi-phase Digital VR Controller xdpe11280
+          - infineon,xdpe11280
             # Infineon Multi-phase Digital VR Controller xdpe12254
           - infineon,xdpe12254
             # Infineon Multi-phase Digital VR Controller xdpe12284
-- 
2.34.1

[PATCH v1 2/3] hwmon (xdpe12284): Add support for xdpe11280

[Marcello Sylvester Bauer]

Add support for another family of Infineon Multi-phase controllers.
The xdpe11280 uses linear instead of vid data format for VOUT.
Add the required logic to detect VOUT_MODE during identification,
and set the format accordingly.

Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
---
 Documentation/hwmon/xdpe12284.rst | 10 +++++++---
 drivers/hwmon/pmbus/xdpe12284.c   | 17 ++++++++++++++++-
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/Documentation/hwmon/xdpe12284.rst b/Documentation/hwmon/xdpe12284.rst
index 67d1f87808e5..e9a5a19b0c3d 100644
--- a/Documentation/hwmon/xdpe12284.rst
+++ b/Documentation/hwmon/xdpe12284.rst
@@ -5,6 +5,10 @@ Kernel driver xdpe122
 
 Supported chips:
 
+  * Infineon XDPE11280
+
+    Prefix: 'xdpe11280'
+
   * Infineon XDPE12254
 
     Prefix: 'xdpe12254'
@@ -20,9 +24,9 @@ Authors:
 Description
 -----------
 
-This driver implements support for Infineon Multi-phase XDPE122 family
-dual loop voltage regulators.
-The family includes XDPE12284 and XDPE12254 devices.
+This driver implements support for Infineon Multi-phase XDPE112 and XDPE122
+family dual loop voltage regulators.
+These families include XDPE11280, XDPE12284 and XDPE12254 devices.
 The devices from this family complaint with:
 
 - Intel VR13 and VR13HC rev 1.3, IMVP8 rev 1.2 and IMPVP9 rev 1.3 DC-DC
diff --git a/drivers/hwmon/pmbus/xdpe12284.c b/drivers/hwmon/pmbus/xdpe12284.c
index b07da06a40c9..ec947c697670 100644
--- a/drivers/hwmon/pmbus/xdpe12284.c
+++ b/drivers/hwmon/pmbus/xdpe12284.c
@@ -27,6 +27,9 @@ static int xdpe122_read_word_data(struct i2c_client *client, int page,
 	s32 mantissa;
 	int ret;
 
+	if (info->format[PSC_VOLTAGE_OUT] == linear)
+		return -ENODATA;
+
 	switch (reg) {
 	case PMBUS_VOUT_OV_FAULT_LIMIT:
 	case PMBUS_VOUT_UV_FAULT_LIMIT:
@@ -75,9 +78,19 @@ static int xdpe122_read_word_data(struct i2c_client *client, int page,
 static int xdpe122_identify(struct i2c_client *client,
 			    struct pmbus_driver_info *info)
 {
-	u8 vout_params;
+	u8 vout_mode, vout_params;
 	int i, ret;
 
+	ret = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
+	if (ret < 0)
+		return ret;
+
+	vout_mode = ret >> 5;
+	if (vout_mode == 0) {
+		info->format[PSC_VOLTAGE_OUT] = linear;
+		return 0;
+	}
+
 	for (i = 0; i < XDPE122_PAGE_NUM; i++) {
 		/* Read the register with VOUT scaling value.*/
 		ret = pmbus_read_byte_data(client, i, PMBUS_VOUT_MODE);
@@ -140,6 +153,7 @@ static int xdpe122_probe(struct i2c_client *client)
 }
 
 static const struct i2c_device_id xdpe122_id[] = {
+	{"xdpe11280", 0},
 	{"xdpe12254", 0},
 	{"xdpe12284", 0},
 	{}
@@ -148,6 +162,7 @@ static const struct i2c_device_id xdpe122_id[] = {
 MODULE_DEVICE_TABLE(i2c, xdpe122_id);
 
 static const struct of_device_id __maybe_unused xdpe122_of_match[] = {
+	{.compatible = "infineon,xdpe11280"},
 	{.compatible = "infineon,xdpe12254"},
 	{.compatible = "infineon,xdpe12284"},
 	{}
-- 
2.34.1

[PATCH v1 3/3] hwmon (xdpe12284): Add regulator support

[Marcello Sylvester Bauer]

Add simple on/off regulator support for xdpe12284 and
other pmbus parts supported by the xdpe12284 driver.

Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
---
 drivers/hwmon/pmbus/Kconfig     |  6 ++++++
 drivers/hwmon/pmbus/xdpe12284.c | 11 +++++++++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index c96f7b7338bd..e0e9b67bf3eb 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -394,6 +394,12 @@ config SENSORS_XDPE122
 	  This driver can also be built as a module. If so, the module will
 	  be called xdpe12284.
 
+config SENSORS_XDPE122_REGULATOR
+	bool "Regulator support for XDPE122 and compatibles"
+	depends on SENSORS_XDPE122 && REGULATOR
+	help
+	  Uses the xdpe12284 or compatible as regulator.
+
 config SENSORS_ZL6100
 	tristate "Intersil ZL6100 and compatibles"
 	help
diff --git a/drivers/hwmon/pmbus/xdpe12284.c b/drivers/hwmon/pmbus/xdpe12284.c
index ec947c697670..c58776ef0311 100644
--- a/drivers/hwmon/pmbus/xdpe12284.c
+++ b/drivers/hwmon/pmbus/xdpe12284.c
@@ -10,6 +10,8 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/regulator/driver.h>
+
 #include "pmbus.h"
 
 #define XDPE122_PROT_VR12_5MV		0x01 /* VR12.0 mode, 5-mV DAC */
@@ -120,6 +122,11 @@ static int xdpe122_identify(struct i2c_client *client,
 	return 0;
 }
 
+static const struct regulator_desc xdpe122_reg_desc[] = {
+	PMBUS_REGULATOR("vout", 0),
+	PMBUS_REGULATOR("vout", 1),
+};
+
 static struct pmbus_driver_info xdpe122_info = {
 	.pages = XDPE122_PAGE_NUM,
 	.format[PSC_VOLTAGE_IN] = linear,
@@ -138,6 +145,10 @@ static struct pmbus_driver_info xdpe122_info = {
 		PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT,
 	.identify = xdpe122_identify,
 	.read_word_data = xdpe122_read_word_data,
+#if IS_ENABLED(CONFIG_SENSORS_XDPE122_REGULATOR)
+	.num_regulators = 2,
+	.reg_desc = xdpe122_reg_desc,
+#endif
 };
 
 static int xdpe122_probe(struct i2c_client *client)
-- 
2.34.1

Re: [PATCH v1 3/3] hwmon (xdpe12284): Add regulator support

[kernel test robot]

Hi Marcello,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on groeck-staging/hwmon-next]
[also build test WARNING on robh/for-next linux/master linus/master v5.17-rc4 next-20220217]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Marcello-Sylvester-Bauer/Support-XDPE112/20220217-172831
base:   https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
config: s390-randconfig-r044-20220217 (https://download.01.org/0day-ci/archive/20220217/202202172254.TL5ZxxMO-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install s390 cross compiling tool for clang build
        # apt-get install binutils-s390x-linux-gnu
        # https://github.com/0day-ci/linux/commit/7d607e48fd68499470da6630cff4d23f43f29aa9
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Marcello-Sylvester-Bauer/Support-XDPE112/20220217-172831
        git checkout 7d607e48fd68499470da6630cff4d23f43f29aa9
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/hwmon/pmbus/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/hwmon/pmbus/xdpe12284.c:125:36: warning: unused variable 'xdpe122_reg_desc' [-Wunused-const-variable]
   static const struct regulator_desc xdpe122_reg_desc[] = {
                                      ^
   1 warning generated.


vim +/xdpe122_reg_desc +125 drivers/hwmon/pmbus/xdpe12284.c

   124	
 > 125	static const struct regulator_desc xdpe122_reg_desc[] = {
   126		PMBUS_REGULATOR("vout", 0),
   127		PMBUS_REGULATOR("vout", 1),
   128	};
   129	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org