1/* 2 * board initialization should put one of these structures into platform_data 3 * and place the bfin-rotary onto platform_bus named "bfin-rotary". 4 * 5 * Copyright 2008-2010 Analog Devices Inc. 6 * 7 * Licensed under the GPL-2 or later. 8 */ 9 10#ifndef _BFIN_ROTARY_H 11#define _BFIN_ROTARY_H 12 13/* mode bitmasks */ 14#define ROT_QUAD_ENC CNTMODE_QUADENC /* quadrature/grey code encoder mode */ 15#define ROT_BIN_ENC CNTMODE_BINENC /* binary encoder mode */ 16#define ROT_UD_CNT CNTMODE_UDCNT /* rotary counter mode */ 17#define ROT_DIR_CNT CNTMODE_DIRCNT /* direction counter mode */ 18 19#define ROT_DEBE DEBE /* Debounce Enable */ 20 21#define ROT_CDGINV CDGINV /* CDG Pin Polarity Invert */ 22#define ROT_CUDINV CUDINV /* CUD Pin Polarity Invert */ 23#define ROT_CZMINV CZMINV /* CZM Pin Polarity Invert */ 24 25struct bfin_rotary_platform_data { 26 /* set rotary UP KEY_### or BTN_### in case you prefer 27 * bfin-rotary to send EV_KEY otherwise set 0 28 */ 29 unsigned int rotary_up_key; 30 /* set rotary DOWN KEY_### or BTN_### in case you prefer 31 * bfin-rotary to send EV_KEY otherwise set 0 32 */ 33 unsigned int rotary_down_key; 34 /* set rotary BUTTON KEY_### or BTN_### */ 35 unsigned int rotary_button_key; 36 /* set rotary Relative Axis REL_### in case you prefer 37 * bfin-rotary to send EV_REL otherwise set 0 38 */ 39 unsigned int rotary_rel_code; 40 unsigned short debounce; /* 0..17 */ 41 unsigned short mode; 42}; 43 44/* CNT_CONFIG bitmasks */ 45#define CNTE (1 << 0) /* Counter Enable */ 46#define DEBE (1 << 1) /* Debounce Enable */ 47#define CDGINV (1 << 4) /* CDG Pin Polarity Invert */ 48#define CUDINV (1 << 5) /* CUD Pin Polarity Invert */ 49#define CZMINV (1 << 6) /* CZM Pin Polarity Invert */ 50#define CNTMODE_SHIFT 8 51#define CNTMODE (0x7 << CNTMODE_SHIFT) /* Counter Operating Mode */ 52#define ZMZC (1 << 1) /* CZM Zeroes Counter Enable */ 53#define BNDMODE_SHIFT 12 54#define BNDMODE (0x3 << BNDMODE_SHIFT) /* Boundary register Mode */ 55#define INPDIS (1 << 15) /* CUG and CDG Input Disable */ 56 57#define CNTMODE_QUADENC (0 << CNTMODE_SHIFT) /* quadrature encoder mode */ 58#define CNTMODE_BINENC (1 << CNTMODE_SHIFT) /* binary encoder mode */ 59#define CNTMODE_UDCNT (2 << CNTMODE_SHIFT) /* up/down counter mode */ 60#define CNTMODE_DIRCNT (4 << CNTMODE_SHIFT) /* direction counter mode */ 61#define CNTMODE_DIRTMR (5 << CNTMODE_SHIFT) /* direction timer mode */ 62 63#define BNDMODE_COMP (0 << BNDMODE_SHIFT) /* boundary compare mode */ 64#define BNDMODE_ZERO (1 << BNDMODE_SHIFT) /* boundary compare and zero mode */ 65#define BNDMODE_CAPT (2 << BNDMODE_SHIFT) /* boundary capture mode */ 66#define BNDMODE_AEXT (3 << BNDMODE_SHIFT) /* boundary auto-extend mode */ 67 68/* CNT_IMASK bitmasks */ 69#define ICIE (1 << 0) /* Illegal Gray/Binary Code Interrupt Enable */ 70#define UCIE (1 << 1) /* Up count Interrupt Enable */ 71#define DCIE (1 << 2) /* Down count Interrupt Enable */ 72#define MINCIE (1 << 3) /* Min Count Interrupt Enable */ 73#define MAXCIE (1 << 4) /* Max Count Interrupt Enable */ 74#define COV31IE (1 << 5) /* Bit 31 Overflow Interrupt Enable */ 75#define COV15IE (1 << 6) /* Bit 15 Overflow Interrupt Enable */ 76#define CZEROIE (1 << 7) /* Count to Zero Interrupt Enable */ 77#define CZMIE (1 << 8) /* CZM Pin Interrupt Enable */ 78#define CZMEIE (1 << 9) /* CZM Error Interrupt Enable */ 79#define CZMZIE (1 << 10) /* CZM Zeroes Counter Interrupt Enable */ 80 81/* CNT_STATUS bitmasks */ 82#define ICII (1 << 0) /* Illegal Gray/Binary Code Interrupt Identifier */ 83#define UCII (1 << 1) /* Up count Interrupt Identifier */ 84#define DCII (1 << 2) /* Down count Interrupt Identifier */ 85#define MINCII (1 << 3) /* Min Count Interrupt Identifier */ 86#define MAXCII (1 << 4) /* Max Count Interrupt Identifier */ 87#define COV31II (1 << 5) /* Bit 31 Overflow Interrupt Identifier */ 88#define COV15II (1 << 6) /* Bit 15 Overflow Interrupt Identifier */ 89#define CZEROII (1 << 7) /* Count to Zero Interrupt Identifier */ 90#define CZMII (1 << 8) /* CZM Pin Interrupt Identifier */ 91#define CZMEII (1 << 9) /* CZM Error Interrupt Identifier */ 92#define CZMZII (1 << 10) /* CZM Zeroes Counter Interrupt Identifier */ 93 94/* CNT_COMMAND bitmasks */ 95#define W1LCNT 0xf /* Load Counter Register */ 96#define W1LMIN 0xf0 /* Load Min Register */ 97#define W1LMAX 0xf00 /* Load Max Register */ 98#define W1ZMONCE (1 << 12) /* Enable CZM Clear Counter Once */ 99 100#define W1LCNT_ZERO (1 << 0) /* write 1 to load CNT_COUNTER with zero */ 101#define W1LCNT_MIN (1 << 2) /* write 1 to load CNT_COUNTER from CNT_MIN */ 102#define W1LCNT_MAX (1 << 3) /* write 1 to load CNT_COUNTER from CNT_MAX */ 103 104#define W1LMIN_ZERO (1 << 4) /* write 1 to load CNT_MIN with zero */ 105#define W1LMIN_CNT (1 << 5) /* write 1 to load CNT_MIN from CNT_COUNTER */ 106#define W1LMIN_MAX (1 << 7) /* write 1 to load CNT_MIN from CNT_MAX */ 107 108#define W1LMAX_ZERO (1 << 8) /* write 1 to load CNT_MAX with zero */ 109#define W1LMAX_CNT (1 << 9) /* write 1 to load CNT_MAX from CNT_COUNTER */ 110#define W1LMAX_MIN (1 << 10) /* write 1 to load CNT_MAX from CNT_MIN */ 111 112/* CNT_DEBOUNCE bitmasks */ 113#define DPRESCALE 0xf /* Load Counter Register */ 114 115#endif 116