Platform support patch for the Dell S6000.

2025-12-26 01:37:04 +00:00 · 2016-12-23 18:20:16 +00:00
parent e119c797e8
commit 40ebb1080b
1 changed files with 157 additions and 0 deletions
--- a/packages/base/any/kernels/3.16-lts/patches/drivers-platform-x86-dell-s6000-s1220.patch
+++ b/packages/base/any/kernels/3.16-lts/patches/drivers-platform-x86-dell-s6000-s1220.patch
@@ -0,0 +1,157 @@
+diff -urpN a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
+--- a/drivers/platform/x86/Kconfig	2016-11-20 01:17:41.000000000 +0000
+++ b/drivers/platform/x86/Kconfig	2016-12-22 20:28:22.048502394 +0000
+@@ -838,4 +838,10 @@ config PVPANIC
+ 	  a paravirtualized device provided by QEMU; it lets a virtual machine
+ 	  (guest) communicate panic events to the host.
+ 
+config DELL_S6000_S1220
+	tristate "Platform Driver for the DELL S6000"
+	---help---
+	  Support the Dell S6000.
+
+
+ endif # X86_PLATFORM_DEVICES
+diff -urpN a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
+--- a/drivers/platform/x86/Makefile	2016-11-20 01:17:41.000000000 +0000
+++ b/drivers/platform/x86/Makefile	2016-12-22 20:29:50.024504303 +0000
+@@ -57,3 +57,4 @@ obj-$(CONFIG_INTEL_SMARTCONNECT)	+= inte
+ 
+ obj-$(CONFIG_PVPANIC)           += pvpanic.o
+ obj-$(CONFIG_ALIENWARE_WMI)	+= alienware-wmi.o
+obj-$(CONFIG_DELL_S6000_S1220)  += dell_s6000_s1220.o
+diff -urpN a/drivers/platform/x86/dell_s6000_s1220.c b/drivers/platform/x86/dell_s6000_s1220.c
+--- a/drivers/platform/x86/dell_s6000_s1220.c	1970-01-01 00:00:00.000000000 +0000
+++ b/drivers/platform/x86/dell_s6000_s1220.c	2016-12-22 20:26:50.728500412 +0000
+@@ -0,0 +1,131 @@
+/**
+ * Dell S6000 Platform Support.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+
+#include <linux/i2c-mux-gpio.h>
+#include <linux/platform_device.h>
+#include <linux/dmi.h>
+
+
+/*************************************************************
+ *
+ * I2C Bus 0 on the S6000 is muxed via gpio1 and gpio2.
+ *
+ ************************************************************/
+static const unsigned s6000_gpiomux_gpios[] = {
+    1, 2
+};
+
+static const unsigned s6000_gpiomux_values[] = {
+    0, 1, 2, 3
+};
+
+static struct i2c_mux_gpio_platform_data s6000_i2cmux_data = {
+    /*
+     * i2c Bus 0
+     */
+    .parent     = 0,
+
+    /*
+     * Start the bus numbers at 10. The first digit
+     * will represent the different bus numbers based
+     * the gpio selector (00, 01, 10, 11):
+     *
+     * i2c-10 --> i2c-0, gpios = 00
+     * i2c-11 --> i2c-0, gpios = 01
+     * i2c-12 --> i2c-0, gpios = 10
+     * i2c-13 --> i2c-0, gpios = 11
+     */
+    .base_nr    = 10,
+
+    .values     = s6000_gpiomux_values,
+    .n_values   = ARRAY_SIZE(s6000_gpiomux_values),
+    .gpios      = s6000_gpiomux_gpios,
+    .n_gpios    = ARRAY_SIZE(s6000_gpiomux_gpios),
+    .idle       = 0,
+};
+
+static struct platform_device s6000_i2cmux = {
+    .name = "i2c-mux-gpio",
+    .id   = 12,
+    .dev  = {
+        .platform_data  = &s6000_i2cmux_data,
+    },
+};
+
+/*************************************************************
+ *
+ * Sensors on i2c-11 (See mux data above).
+ *
+ ************************************************************/
+static struct i2c_board_info s6000_i2c_11_board_info[] = {
+    { I2C_BOARD_INFO("lm75", 0x4c) },
+    { I2C_BOARD_INFO("lm75", 0x4d) },
+    { I2C_BOARD_INFO("lm75", 0x4e) },
+    { I2C_BOARD_INFO("ltc4215", 0x42) },
+    { I2C_BOARD_INFO("ltc4215", 0x40) },
+    { I2C_BOARD_INFO("max6620", 0x29) },
+    { I2C_BOARD_INFO("max6620", 0x2A) },
+    { I2C_BOARD_INFO("24c02", 0x51) },
+    { I2C_BOARD_INFO("24c02", 0x52) },
+    { I2C_BOARD_INFO("24c02", 0x53) },
+};
+
+static int __init dell_s6000_s1220_init(void)
+{
+    int i;
+    int rv = 0;
+    char const *vendor, *product;
+    struct i2c_adapter * i2ca;
+
+    vendor  = dmi_get_system_info(DMI_SYS_VENDOR);
+    product = dmi_get_system_info(DMI_PRODUCT_NAME);
+
+    if(strcmp(vendor, "Dell Inc") ||
+       (strcmp(product, "S6000 (SI)") && strcmp(product, "S6000-ON") &&
+        strcmp(product, "S6000-ON (SI)"))) {
+        /* Not the S6000 */
+        return -ENODEV;
+    }
+
+    /**
+     * Register the GPIO mux for bus 0.
+     */
+    rv = platform_device_register(&s6000_i2cmux);
+    if(rv < 0) {
+        pr_err("%s: platform_device_register() failed: %d", __FUNCTION__, rv);
+        return rv;
+    }
+
+    /**
+     * Register I2C devices on new buses
+     */
+    i2ca = i2c_get_adapter(11);
+    for(i = 0; i < ARRAY_SIZE(s6000_i2c_11_board_info); i++) {
+        if(i2c_new_device(i2ca, s6000_i2c_11_board_info+i) == NULL) {
+            pr_err("%s: i2c_new_device for bus 11:0x%x failed.",
+                   __FUNCTION__, s6000_i2c_11_board_info[i].addr);
+        }
+    }
+
+    return 0;
+
+}
+
+static void __exit dell_s6000_s1220_cleanup(void)
+{
+    platform_device_unregister(&s6000_i2cmux);
+}
+
+module_init(dell_s6000_s1220_init);
+module_exit(dell_s6000_s1220_cleanup);
+
+MODULE_AUTHOR("Big Switch Networks (support@bigswitch.com)");
+MODULE_VERSION("1.0");
+MODULE_DESCRIPTION("Dell S6000");
+MODULE_LICENSE("GPL");