From 8d8bba0caf0864c24e4dda669fe05badd45396ea Mon Sep 17 00:00:00 2001
From: Deni <d.sukhonin@gmail.com>
Date: Sat, 30 Jun 2018 00:11:41 +0100
Subject: [PATCH] Support Delta DPS1900 (#49)

---
 patch/config-arista-dps1900.patch      |   9 +++
 patch/driver-hwmon-pmbus-dps1900.patch | 104 +++++++++++++++++++++++++
 patch/series                           |   2 +
 3 files changed, 115 insertions(+)
 create mode 100644 patch/config-arista-dps1900.patch
 create mode 100644 patch/driver-hwmon-pmbus-dps1900.patch

diff --git a/patch/config-arista-dps1900.patch b/patch/config-arista-dps1900.patch
new file mode 100644
index 000000000000..fdbe745d0144
--- /dev/null
+++ b/patch/config-arista-dps1900.patch
@@ -0,0 +1,9 @@
+diff --git a/debian/build/build_amd64_none_amd64/.config b/debian/build/build_amd64_none_amd64/.config
+index 6b6aea9..14e32cb 100644
+--- a/debian/build/build_amd64_none_amd64/.config
++++ b/debian/build/build_amd64_none_amd64/.config
+@@ -6820,3 +6821,4 @@ CONFIG_FONT_SUPPORT=y
+ # CONFIG_FONTS is not set
+ CONFIG_FONT_8x8=y
+ CONFIG_FONT_8x16=y
++CONFIG_SENSORS_DPS1900=m
diff --git a/patch/driver-hwmon-pmbus-dps1900.patch b/patch/driver-hwmon-pmbus-dps1900.patch
new file mode 100644
index 000000000000..03e10e6025b0
--- /dev/null
+++ b/patch/driver-hwmon-pmbus-dps1900.patch
@@ -0,0 +1,104 @@
+diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
+index 510f055..f8ca77e 100644
+--- a/drivers/hwmon/pmbus/Kconfig
++++ b/drivers/hwmon/pmbus/Kconfig
+@@ -131,4 +131,14 @@ config SENSORS_ZL6100
+ 	  This driver can also be built as a module. If so, the module will
+ 	  be called zl6100.
+ 
++config SENSORS_DPS1900
++	tristate "Delta DPS1900"
++	default n
++	help
++	  If you say yes here you get hardware monitoring support for Delta
++	  DPS1900.
++
++	  This driver can also be built as a module. If so, the module will
++	  be called dps1900.
++
+ endif # PMBUS
+diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
+index be70828..8276d89 100644
+--- a/drivers/hwmon/pmbus/Makefile
++++ b/drivers/hwmon/pmbus/Makefile
+@@ -14,3 +14,4 @@ obj-$(CONFIG_SENSORS_MAX8688)	+= max8688.o
+ obj-$(CONFIG_SENSORS_UCD9000)	+= ucd9000.o
+ obj-$(CONFIG_SENSORS_UCD9200)	+= ucd9200.o
+ obj-$(CONFIG_SENSORS_ZL6100)	+= zl6100.o
++obj-$(CONFIG_SENSORS_DPS1900)	+= dps1900.o
+diff --git a/drivers/hwmon/pmbus/dps1900.c b/drivers/hwmon/pmbus/dps1900.c
+new file mode 100644
+index 0000000..8f90c04
+--- /dev/null
++++ b/drivers/hwmon/pmbus/dps1900.c
+@@ -0,0 +1,70 @@
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/err.h>
++#include <linux/i2c.h>
++#include <linux/slab.h>
++#include <linux/i2c/pmbus.h>
++#include "pmbus.h"
++
++static int dps1900_read_word_data(struct i2c_client *client, int page, int reg)
++{
++	if (reg >= PMBUS_VIRT_BASE ||
++	    reg == PMBUS_OT_WARN_LIMIT ||
++	    reg == PMBUS_OT_FAULT_LIMIT ||
++	    reg == PMBUS_UT_WARN_LIMIT ||
++	    reg == PMBUS_UT_FAULT_LIMIT ||
++	    reg == PMBUS_VIN_OV_FAULT_LIMIT ||
++	    reg == PMBUS_VIN_OV_WARN_LIMIT ||
++	    reg == PMBUS_VIN_UV_WARN_LIMIT ||
++	    reg == PMBUS_VIN_UV_FAULT_LIMIT ||
++	    reg == PMBUS_VOUT_UV_WARN_LIMIT ||
++	    reg == PMBUS_VOUT_OV_WARN_LIMIT ||
++	    reg == PMBUS_POUT_OP_FAULT_LIMIT ||
++	    reg == PMBUS_POUT_OP_WARN_LIMIT ||
++	    reg == PMBUS_PIN_OP_WARN_LIMIT ||
++	    reg == PMBUS_IIN_OC_FAULT_LIMIT ||
++	    reg == PMBUS_IOUT_UC_FAULT_LIMIT ||
++	    reg == PMBUS_POUT_MAX)
++		return -ENXIO;
++	return pmbus_read_word_data(client, page, reg);
++}
++
++static struct pmbus_driver_info dps1900_info = {
++	.pages = 1,
++	.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
++	         | PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
++	         | PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12
++	         | PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP
++	         | PMBUS_HAVE_STATUS_INPUT,
++	.read_word_data = dps1900_read_word_data,
++};
++
++static int dps1900_probe(struct i2c_client *client,
++			 const struct i2c_device_id *id)
++{
++	return pmbus_do_probe(client, id, &dps1900_info);
++}
++
++static const struct i2c_device_id dps1900_id[] = {
++	{"dps1900", 0},
++	{}
++};
++
++MODULE_DEVICE_TABLE(i2c, dps1900_id);
++
++/* This is the driver that will be inserted */
++static struct i2c_driver dps1900_driver = {
++	.driver = {
++		.name = "dps1900",
++	},
++	.probe = dps1900_probe,
++	.remove = pmbus_do_remove,
++	.id_table = dps1900_id,
++};
++
++module_i2c_driver(dps1900_driver);
++
++MODULE_AUTHOR("Arista Networks");
++MODULE_DESCRIPTION("PMBus driver for Delta DPS1900");
++MODULE_LICENSE("GPL");
diff --git a/patch/series b/patch/series
index c1a949a162a1..ba9311eb23a1 100644
--- a/patch/series
+++ b/patch/series
@@ -28,6 +28,8 @@ driver-pca954x-i2c-mux-force-deselect-on-exit-flag.patch
 linux-3.19-mmc-sdhci-Add-a-quirk-for-AMD-SDHC-transfer-mode-reg.patch
 linux-3.19-mmc-sdhci-pci-enable-the-clear-transfer-mode-registe.patch
 linux-3.19-mmc-sdhci-pci-enable-sdhci-doesn-t-support-hs200-qui.patch
+driver-hwmon-pmbus-dps1900.patch
+config-arista-dps1900.patch
 rtnetlink-catch-EOPNOTSUPP-errors.patch
 bridge-per-port-multicast-broadcast-flood-flags.patch
 driver-support-tun-config-carrier-enable.patch