[PATCH v1 3/3] hwmon: (pmbus/tps1689): Add TPS1689 support

[Stoyan Bogdanov <sbogdanov@baylibre.com>]

Extend tps25990 existing driver to support tps1689 eFuse,
since they are sharing command interface and functionality
Update documentation for tps1689

Signed-off-by: Stoyan Bogdanov <sbogdanov@baylibre.com>
---
 Documentation/hwmon/tps25990.rst | 15 ++++---
 drivers/hwmon/pmbus/tps25990.c   | 70 ++++++++++++++++++++++++++++++++
 2 files changed, 80 insertions(+), 5 deletions(-)

diff --git a/Documentation/hwmon/tps25990.rst b/Documentation/hwmon/tps25990.rst
index 04faec780d26..e8bc9a550bda 100644
--- a/Documentation/hwmon/tps25990.rst
+++ b/Documentation/hwmon/tps25990.rst
@@ -9,26 +9,31 @@ Supported chips:
 
     Prefix: 'tps25990'
 
-  * Datasheet
+    Datasheet: Publicly available at Texas Instruments website: https://www.ti.com/lit/gpn/tps25990
 
-    Publicly available at Texas Instruments website: https://www.ti.com/lit/gpn/tps25990
+  * TI TPS1689
+
+    Prefix: 'tps1689'
+
+    Datasheet: Publicly available at Texas Instruments website: https://www.ti.com/lit/gpn/tps1689
 
 Author:
 
 	Jerome Brunet <jbrunet@baylibre.com>
+	Stoyan Bogdanov <sbogdanov@baylibre.com>
 
 Description
 -----------
 
-This driver implements support for TI TPS25990 eFuse.
+This driver implements support for TI TPS25990 and TI TPS1689 eFuse chips.
 This is an integrated, high-current circuit protection and power
 management device with PMBUS interface
 
-Device compliant with:
+Devices are compliant with:
 
 - PMBus rev 1.3 interface.
 
-Device supports direct format for reading input voltages,
+Devices supports direct format for reading input voltages,
 output voltage, input current, input power and temperature.
 
 Due to the specificities of the chip, all history reset attributes
diff --git a/drivers/hwmon/pmbus/tps25990.c b/drivers/hwmon/pmbus/tps25990.c
index 268e361b6fd3..3d4056724303 100644
--- a/drivers/hwmon/pmbus/tps25990.c
+++ b/drivers/hwmon/pmbus/tps25990.c
@@ -370,6 +370,15 @@ static const struct regulator_desc tps25990_reg_desc[] = {
 };
 #endif
 
+struct local_direct_value tps1689_local_info = {
+	.m[TPS25990_VIN_OVF] = 3984,
+	.b[TPS25990_VIN_OVF] = -63750,
+	.R[TPS25990_VIN_OVF] = -3,
+	.m[TPS25990_IIN_OCF] = 7111,
+	.b[TPS25990_IIN_OCF] = -2133,
+	.R[TPS25990_IIN_OCF] = -2,
+};
+
 struct local_direct_value tps25590_local_info = {
 	.m[TPS25990_VIN_OVF] = 10163,
 	.b[TPS25990_VIN_OVF] = -30081,
@@ -379,6 +388,60 @@ struct local_direct_value tps25590_local_info = {
 	.R[TPS25990_IIN_OCF] = -6,
 };
 
+static struct pmbus_driver_info tps1689_base_info = {
+	.pages = 1,
+	.format[PSC_VOLTAGE_IN] = direct,
+	.m[PSC_VOLTAGE_IN] = 1166,
+	.b[PSC_VOLTAGE_IN] = 0,
+	.R[PSC_VOLTAGE_IN] = -2,
+	.format[PSC_VOLTAGE_OUT] = direct,
+	.m[PSC_VOLTAGE_OUT] = 1166,
+	.b[PSC_VOLTAGE_OUT] = 0,
+	.R[PSC_VOLTAGE_OUT] = -2,
+	.format[PSC_TEMPERATURE] = direct,
+	.m[PSC_TEMPERATURE] = 140,
+	.b[PSC_TEMPERATURE] = 32103,
+	.R[PSC_TEMPERATURE] = -2,
+	/*
+	 * Current and Power measurement depends on the ohm value
+	 * of Rimon. m is multiplied by 1000 below to have an integer
+	 * and -3 is added to R to compensate.
+	 */
+	.format[PSC_CURRENT_IN] = direct,
+	.m[PSC_CURRENT_IN] = 9548,
+	.b[PSC_CURRENT_IN] = 0,
+	.R[PSC_CURRENT_IN] = -6,
+	.format[PSC_CURRENT_OUT] = direct,
+	.m[PSC_CURRENT_OUT] = 24347,
+	.b[PSC_CURRENT_OUT] = 0,
+	.R[PSC_CURRENT_OUT] = -3,
+	.format[PSC_POWER] = direct,
+	.m[PSC_POWER] = 2775,
+	.b[PSC_POWER] = 0,
+	.R[PSC_POWER] = -4,
+	.func[0] = (PMBUS_HAVE_VIN |
+		    PMBUS_HAVE_VOUT |
+		    PMBUS_HAVE_VMON |
+		    PMBUS_HAVE_IIN |
+		    PMBUS_HAVE_PIN |
+		    PMBUS_HAVE_TEMP |
+		    PMBUS_HAVE_STATUS_VOUT |
+		    PMBUS_HAVE_STATUS_IOUT |
+		    PMBUS_HAVE_STATUS_INPUT |
+		    PMBUS_HAVE_STATUS_TEMP |
+		    PMBUS_HAVE_SAMPLES),
+
+	.read_word_data = tps25990_read_word_data,
+	.write_word_data = tps25990_write_word_data,
+	.read_byte_data = tps25990_read_byte_data,
+	.write_byte_data = tps25990_write_byte_data,
+
+#if IS_ENABLED(CONFIG_SENSORS_TPS25990_REGULATOR)
+	.reg_desc = tps25990_reg_desc,
+	.num_regulators = ARRAY_SIZE(tps25990_reg_desc),
+#endif
+};
+
 static struct pmbus_driver_info tps25990_base_info = {
 	.pages = 1,
 	.format[PSC_VOLTAGE_IN] = direct,
@@ -428,18 +491,25 @@ static struct pmbus_driver_info tps25990_base_info = {
 #endif
 };
 
+struct tps25990_data data_tps1689 = {
+	.info = &tps1689_base_info,
+	.info_local = &tps1689_local_info,
+};
+
 struct tps25990_data data_tps25990 = {
 	.info = &tps25990_base_info,
 	.info_local = &tps25590_local_info,
 };
 
 static const struct i2c_device_id tps25990_i2c_id[] = {
+	{ .name = "tps1689", .driver_data = (kernel_ulong_t)&data_tps1689 },
 	{ .name = "tps25990", .driver_data = (kernel_ulong_t)&data_tps25990 },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, tps25990_i2c_id);
 
 static const struct of_device_id tps25990_of_match[] = {
+	{ .compatible = "ti,tps1689", .data = &data_tps1689 },
 	{ .compatible = "ti,tps25990", .data = &data_tps25990 },
 	{}
 };
-- 
2.34.1