Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * BRIEF MODULE DESCRIPTION |
| 4 | * IT8172 Consumer IR port defines. |
| 5 | * |
| 6 | * Copyright 2001 MontaVista Software Inc. |
| 7 | * Author: MontaVista Software, Inc. |
| 8 | * ppopov@mvista.com or source@mvista.com |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the |
| 12 | * Free Software Foundation; either version 2 of the License, or (at your |
| 13 | * option) any later version. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 16 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 17 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 18 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 21 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 22 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License along |
| 27 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 28 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 29 | */ |
| 30 | |
| 31 | #define NUM_CIR_PORTS 2 |
| 32 | |
| 33 | /* Master Control Register */ |
| 34 | #define CIR_RESET 0x1 |
| 35 | #define CIR_FIFO_CLEAR 0x2 |
| 36 | #define CIR_SET_FIFO_TL(x) (((x)&0x3)<<2) |
| 37 | #define CIR_ILE 0x10 |
| 38 | #define CIR_ILSEL 0x20 |
| 39 | |
| 40 | /* Interrupt Enable Register */ |
| 41 | #define CIR_TLDLIE 0x1 |
| 42 | #define CIR_RDAIE 0x2 |
| 43 | #define CIR_RFOIE 0x4 |
| 44 | #define CIR_IEC 0x80 |
| 45 | |
| 46 | /* Interrupt Identification Register */ |
| 47 | #define CIR_TLDLI 0x1 |
| 48 | #define CIR_RDAI 0x2 |
| 49 | #define CIR_RFOI 0x4 |
| 50 | #define CIR_NIP 0x80 |
| 51 | |
| 52 | /* Carrier Frequency Register */ |
| 53 | #define CIR_SET_CF(x) ((x)&0x1f) |
| 54 | #define CFQ_38_480 0xB /* 38 KHz low, 480 KHz high */ |
| 55 | #define CIR_HCFS 0x20 |
| 56 | #define CIR_SET_HS(x) (((x)&0x1)<<5) |
| 57 | |
| 58 | |
| 59 | /* Receiver Control Register */ |
| 60 | #define CIR_SET_RXDCR(x) ((x)&0x7) |
| 61 | #define CIR_RXACT 0x8 |
| 62 | #define CIR_RXEND 0x10 |
| 63 | #define CIR_RDWOS 0x20 |
| 64 | #define CIR_SET_RDWOS(x) (((x)&0x1)<<5) |
| 65 | #define CIR_RXEN 0x80 |
| 66 | |
| 67 | /* Transmitter Control Register */ |
| 68 | #define CIR_SET_TXMPW(x) ((x)&0x7) |
| 69 | #define CIR_SET_TXMPM(x) (((x)&0x3)<<3) |
| 70 | #define CIR_TXENDF 0x20 |
| 71 | #define CIR_TXRLE 0x40 |
| 72 | |
| 73 | /* Receiver FIFO Status Register */ |
| 74 | #define CIR_RXFBC_MASK 0x3f |
| 75 | #define CIR_RXFTO 0x80 |
| 76 | |
| 77 | /* Wakeup Code Length Register */ |
| 78 | #define CIR_SET_WCL ((x)&0x3f) |
| 79 | #define CIR_WCL_MASK(x) ((x)&0x3f) |
| 80 | |
| 81 | /* Wakeup Power Control/Status Register */ |
| 82 | #define CIR_BTMON 0x2 |
| 83 | #define CIR_CIRON 0x4 |
| 84 | #define CIR_RCRST 0x10 |
| 85 | #define CIR_WCRST 0x20 |
| 86 | |
| 87 | struct cir_port { |
| 88 | int port; |
| 89 | unsigned short baud_rate; |
| 90 | unsigned char fifo_tl; |
| 91 | unsigned char cfq; |
| 92 | unsigned char hcfs; |
| 93 | unsigned char rdwos; |
| 94 | unsigned char rxdcr; |
| 95 | }; |
| 96 | |
| 97 | struct it8172_cir_regs { |
| 98 | unsigned char dr; /* data */ |
| 99 | char pad; |
| 100 | unsigned char mstcr; /* master control */ |
| 101 | char pad1; |
| 102 | unsigned char ier; /* interrupt enable */ |
| 103 | char pad2; |
| 104 | unsigned char iir; /* interrupt identification */ |
| 105 | char pad3; |
| 106 | unsigned char cfr; /* carrier frequency */ |
| 107 | char pad4; |
| 108 | unsigned char rcr; /* receiver control */ |
| 109 | char pad5; |
| 110 | unsigned char tcr; /* transmitter control */ |
| 111 | char pad6; |
| 112 | char pad7; |
| 113 | char pad8; |
| 114 | unsigned char bdlr; /* baud rate divisor low byte */ |
| 115 | char pad9; |
| 116 | unsigned char bdhr; /* baud rate divisor high byte */ |
| 117 | char pad10; |
| 118 | unsigned char tfsr; /* tx fifo byte count */ |
| 119 | char pad11; |
| 120 | unsigned char rfsr; /* rx fifo status */ |
| 121 | char pad12; |
| 122 | unsigned char wcl; /* wakeup code length */ |
| 123 | char pad13; |
| 124 | unsigned char wcr; /* wakeup code read/write */ |
| 125 | char pad14; |
| 126 | unsigned char wps; /* wakeup power control/status */ |
| 127 | }; |
| 128 | |
| 129 | int cir_port_init(struct cir_port *cir); |
| 130 | extern void clear_fifo(struct cir_port *cir); |
| 131 | extern void enable_receiver(struct cir_port *cir); |
| 132 | extern void disable_receiver(struct cir_port *cir); |
| 133 | extern void enable_rx_demodulation(struct cir_port *cir); |
| 134 | extern void disable_rx_demodulation(struct cir_port *cir); |
| 135 | extern void set_rx_active(struct cir_port *cir); |
| 136 | extern void int_enable(struct cir_port *cir); |
| 137 | extern void rx_int_enable(struct cir_port *cir); |
| 138 | extern char get_int_status(struct cir_port *cir); |
| 139 | extern int cir_get_rx_count(struct cir_port *cir); |
| 140 | extern char cir_read_data(struct cir_port *cir); |