+
+/*
+ * - SMU "sdb" partitions informations -
+ */
+
+
+/*
+ * Partition header format
+ */
+struct smu_sdbp_header {
+ __u8 id;
+ __u8 len;
+ __u8 version;
+ __u8 flags;
+};
+
+
+ /*
+ * demangle 16 and 32 bits integer in some SMU partitions
+ * (currently, afaik, this concerns only the FVT partition
+ * (0x12)
+ */
+#define SMU_U16_MIX(x) le16_to_cpu(x);
+#define SMU_U32_MIX(x) ((((x) & 0xff00ff00u) >> 8)|(((x) & 0x00ff00ffu) << 8))
+
+
+/* This is the definition of the SMU sdb-partition-0x12 table (called
+ * CPU F/V/T operating points in Darwin). The definition for all those
+ * SMU tables should be moved to some separate file
+ */
+#define SMU_SDB_FVT_ID 0x12
+
+struct smu_sdbp_fvt {
+ __u32 sysclk; /* Base SysClk frequency in Hz for
+ * this operating point. Value need to
+ * be unmixed with SMU_U32_MIX()
+ */
+ __u8 pad;
+ __u8 maxtemp; /* Max temp. supported by this
+ * operating point
+ */
+
+ __u16 volts[3]; /* CPU core voltage for the 3
+ * PowerTune modes, a mode with
+ * 0V = not supported. Value need
+ * to be unmixed with SMU_U16_MIX()
+ */
+};
+
+/* This partition contains voltage & current sensor calibration
+ * informations
+ */
+#define SMU_SDB_CPUVCP_ID 0x21
+
+struct smu_sdbp_cpuvcp {
+ __u16 volt_scale; /* u4.12 fixed point */
+ __s16 volt_offset; /* s4.12 fixed point */
+ __u16 curr_scale; /* u4.12 fixed point */
+ __s16 curr_offset; /* s4.12 fixed point */
+ __s32 power_quads[3]; /* s4.28 fixed point */
+};
+
+/* This partition contains CPU thermal diode calibration
+ */
+#define SMU_SDB_CPUDIODE_ID 0x18
+
+struct smu_sdbp_cpudiode {
+ __u16 m_value; /* u1.15 fixed point */
+ __s16 b_value; /* s10.6 fixed point */
+
+};
+
+/* This partition contains Slots power calibration
+ */
+#define SMU_SDB_SLOTSPOW_ID 0x78
+
+struct smu_sdbp_slotspow {
+ __u16 pow_scale; /* u4.12 fixed point */
+ __s16 pow_offset; /* s4.12 fixed point */
+};
+
+/* This partition contains machine specific version information about
+ * the sensor/control layout
+ */
+#define SMU_SDB_SENSORTREE_ID 0x25
+
+struct smu_sdbp_sensortree {
+ u8 model_id;
+ u8 unknown[3];
+};
+
+/* This partition contains CPU thermal control PID informations. So far
+ * only single CPU machines have been seen with an SMU, so we assume this
+ * carries only informations for those
+ */
+#define SMU_SDB_CPUPIDDATA_ID 0x17
+
+struct smu_sdbp_cpupiddata {
+ u8 unknown1;
+ u8 target_temp_delta;
+ u8 unknown2;
+ u8 history_len;
+ s16 power_adj;
+ u16 max_power;
+ s32 gp,gr,gd;
+};
+
+
+/* Other partitions without known structures */
+#define SMU_SDB_DEBUG_SWITCHES_ID 0x05
+
+#ifdef __KERNEL__
+/*
+ * This returns the pointer to an SMU "sdb" partition data or NULL
+ * if not found. The data format is described below
+ */
+extern struct smu_sdbp_header *smu_get_sdb_partition(int id,
+ unsigned int *size);
+
+#endif /* __KERNEL__ */
+
+