Add the mk66 registers

chips/mk66/src/regs/i2c.rs

@@ -0,0 +1,90 @@
+use common::regs::{ReadWrite};
+#[repr(C, packed)]
+pub struct Registers {
+    pub  a1: ReadWrite<u8, I2CAddress>,
+    pub  f: ReadWrite<u8, MultiplierFactor>,
+    pub  c1: ReadWrite<u8, ControlRegister1>,
+    pub  s: ReadWrite<u8, StatusRegister>,
+    pub  d: ReadWrite<u8>,
+    pub  c2: ReadWrite<u8, ControlRegister2>,
+    pub  flt: ReadWrite<u8, FltRegister>,
+    pub  ra: ReadWrite<u8, RangeAddress>,
+    pub  smb: ReadWrite<u8, SMBusCSR>,
+    pub  a2: ReadWrite<u8, I2CAddress>,
+    pub  slth: ReadWrite<u8>,
+    pub  sltl: ReadWrite<u8>
+}
+
+pub const I2C_BASE_ADDRS: [*mut Registers; 4] = [0x40066000 as *mut Registers,
+                                                 0x40067000 as *mut Registers,
+                                                 0x400E6000 as *mut Registers,
+                                                 0x400E7000 as *mut Registers];
+bitfields! {u8,
+            A1 I2CAddress [
+                ADR (1, Mask(0b1111111)),
+                res 0
+            ],
+	// reviewers: what am I missing here?
+	// I could not figure out how to name the multibit field.
+            F MultiplierFactor [
+                Factor (6, Mask(0b11)),
+                //f1 = 00,
+                //                    f2 = 01,
+                  //  f4 = 02,
+                   // res = 03
+                Rate (0, Mask(0b111111))
+            ],
+            // These names are kinda awkward, but they match the docs, so ...
+            C1 ControlRegister1 [
+                IICEN 7 [],
+                IICIE 6[],
+                MST (5, Mask(0b1)) [
+                    Slave=0,
+                    Master=1
+                ],
+                TX 4 [],
+                TXAK 3 [],
+                RSTAR 2[],
+                WUEN 1 [],
+                DMAEN 0 []
+            ],
+            Status StatusRegister [
+                TCF 7,
+                IAAS 6,
+                BUSY 5,
+                ARBL 4,
+                RAM 3,
+                SRW 2,
+                IICIF 1,
+                RXAK 0
+            ],
+            C2 ControlRegister2 [
+                GCAEN 7,
+                ADEXT 6,
+                HDRS 5,
+                SBRC 4,
+                RMEN 3,
+                AD10 (0, Mask(0b111))
+            ],
+            FLT FltRegister [
+                SHEN 7,
+                STOPF 6,
+                SSIE 5,
+                STARTF 4,
+                FLT (0, Mask(0b1111))
+            ],
+            RA RangeAddress [
+                RAD(1, Mask(0b1111111)),
+                res 0
+            ],
+            SMB SMBusCSR [
+                FACK 7,
+                ALERTEN 6,
+                SIICAEN 5,
+                TCKSEL 4,
+                SLTF 3,
+                SHTF1 2,
+                SHTF2 1,
+                SHTF2IE 0
+            ]
+}