1/* $FreeBSD$ */ 2/*- 3 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 4 * 5 * Copyright (c) 2010 Lev Serebryakov <lev@FreeBSD.org>. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29#ifndef _UMCS7840_H_ 30#define _UMCS7840_H_ 31 32#define UMCS7840_MAX_PORTS 4 33 34#define UMCS7840_READ_LENGTH 1 /* bytes */ 35#define UMCS7840_CTRL_TIMEOUT 500 /* ms */ 36 37/* Read/Wrtire registers vendor commands */ 38#define MCS7840_RDREQ 0x0d 39#define MCS7840_WRREQ 0x0e 40 41/* Read/Wrtie EEPROM values */ 42#define MCS7840_EEPROM_RW_WVALUE 0x0900 43 44/* 45 * All these registers are documented only in full datasheet, 46 * which can be requested from MosChip tech support. 47 */ 48#define MCS7840_DEV_REG_SP1 0x00 /* Options for for UART 1, R/W */ 49#define MCS7840_DEV_REG_CONTROL1 0x01 /* Control bits for UART 1, 50 * R/W */ 51#define MCS7840_DEV_REG_PINPONGHIGH 0x02 /* High bits of ping-pong 52 * register, R/W */ 53#define MCS7840_DEV_REG_PINPONGLOW 0x03 /* Low bits of ping-pong 54 * register, R/W */ 55/* DCRx_1 Registers goes here (see below, they are documented) */ 56#define MCS7840_DEV_REG_GPIO 0x07 /* GPIO_0 and GPIO_1 bits, 57 * undocumented, see notes 58 * below R/W */ 59#define MCS7840_DEV_REG_SP2 0x08 /* Options for for UART 2, R/W */ 60#define MCS7840_DEV_REG_CONTROL2 0x09 /* Control bits for UART 2, 61 * R/W */ 62#define MCS7840_DEV_REG_SP3 0x0a /* Options for for UART 3, R/W */ 63#define MCS7840_DEV_REG_CONTROL3 0x0b /* Control bits for UART 3, 64 * R/W */ 65#define MCS7840_DEV_REG_SP4 0x0c /* Options for for UART 4, R/W */ 66#define MCS7840_DEV_REG_CONTROL4 0x0d /* Control bits for UART 4, 67 * R/W */ 68#define MCS7840_DEV_REG_PLL_DIV_M 0x0e /* Pre-diviedr for PLL, R/W */ 69#define MCS7840_DEV_REG_UNKNOWN1 0x0f /* NOT MENTIONED AND NOT USED */ 70#define MCS7840_DEV_REG_PLL_DIV_N 0x10 /* Loop divider for PLL, R/W */ 71#define MCS7840_DEV_REG_CLOCK_MUX 0x12 /* PLL input clock & Interrupt 72 * endpoint control, R/W */ 73#define MCS7840_DEV_REG_UNKNOWN2 0x11 /* NOT MENTIONED AND NOT USED */ 74#define MCS7840_DEV_REG_CLOCK_SELECT12 0x13 /* Clock source for ports 1 & 75 * 2, R/W */ 76#define MCS7840_DEV_REG_CLOCK_SELECT34 0x14 /* Clock source for ports 3 & 77 * 4, R/W */ 78#define MCS7840_DEV_REG_UNKNOWN3 0x15 /* NOT MENTIONED AND NOT USED */ 79/* DCRx_2-DCRx_4 Registers goes here (see below, they are documented) */ 80#define MCS7840_DEV_REG_UNKNOWN4 0x1f /* NOT MENTIONED AND NOT USED */ 81#define MCS7840_DEV_REG_UNKNOWN5 0x20 /* NOT MENTIONED AND NOT USED */ 82#define MCS7840_DEV_REG_UNKNOWN6 0x21 /* NOT MENTIONED AND NOT USED */ 83#define MCS7840_DEV_REG_UNKNOWN7 0x22 /* NOT MENTIONED AND NOT USED */ 84#define MCS7840_DEV_REG_UNKNOWN8 0x23 /* NOT MENTIONED AND NOT USED */ 85#define MCS7840_DEV_REG_UNKNOWN9 0x24 /* NOT MENTIONED AND NOT USED */ 86#define MCS7840_DEV_REG_UNKNOWNA 0x25 /* NOT MENTIONED AND NOT USED */ 87#define MCS7840_DEV_REG_UNKNOWNB 0x26 /* NOT MENTIONED AND NOT USED */ 88#define MCS7840_DEV_REG_UNKNOWNC 0x27 /* NOT MENTIONED AND NOT USED */ 89#define MCS7840_DEV_REG_UNKNOWND 0x28 /* NOT MENTIONED AND NOT USED */ 90#define MCS7840_DEV_REG_UNKNOWNE 0x29 /* NOT MENTIONED AND NOT USED */ 91#define MCS7840_DEV_REG_UNKNOWNF 0x2a /* NOT MENTIONED AND NOT USED */ 92#define MCS7840_DEV_REG_MODE 0x2b /* Hardware configuration, 93 * R/Only */ 94#define MCS7840_DEV_REG_SP1_ICG 0x2c /* Inter character gap 95 * configuration for Port 1, 96 * R/W */ 97#define MCS7840_DEV_REG_SP2_ICG 0x2d /* Inter character gap 98 * configuration for Port 2, 99 * R/W */ 100#define MCS7840_DEV_REG_SP3_ICG 0x2e /* Inter character gap 101 * configuration for Port 3, 102 * R/W */ 103#define MCS7840_DEV_REG_SP4_ICG 0x2f /* Inter character gap 104 * configuration for Port 4, 105 * R/W */ 106#define MCS7840_DEV_REG_RX_SAMPLING12 0x30 /* RX sampling for ports 1 & 107 * 2, R/W */ 108#define MCS7840_DEV_REG_RX_SAMPLING34 0x31 /* RX sampling for ports 3 & 109 * 4, R/W */ 110#define MCS7840_DEV_REG_BI_FIFO_STAT1 0x32 /* Bulk-In FIFO Stat for Port 111 * 1, contains number of 112 * available bytes, R/Only */ 113#define MCS7840_DEV_REG_BO_FIFO_STAT1 0x33 /* Bulk-out FIFO Stat for Port 114 * 1, contains number of 115 * available bytes, R/Only */ 116#define MCS7840_DEV_REG_BI_FIFO_STAT2 0x34 /* Bulk-In FIFO Stat for Port 117 * 2, contains number of 118 * available bytes, R/Only */ 119#define MCS7840_DEV_REG_BO_FIFO_STAT2 0x35 /* Bulk-out FIFO Stat for Port 120 * 2, contains number of 121 * available bytes, R/Only */ 122#define MCS7840_DEV_REG_BI_FIFO_STAT3 0x36 /* Bulk-In FIFO Stat for Port 123 * 3, contains number of 124 * available bytes, R/Only */ 125#define MCS7840_DEV_REG_BO_FIFO_STAT3 0x37 /* Bulk-out FIFO Stat for Port 126 * 3, contains number of 127 * available bytes, R/Only */ 128#define MCS7840_DEV_REG_BI_FIFO_STAT4 0x38 /* Bulk-In FIFO Stat for Port 129 * 4, contains number of 130 * available bytes, R/Only */ 131#define MCS7840_DEV_REG_BO_FIFO_STAT4 0x39 /* Bulk-out FIFO Stat for Port 132 * 4, contains number of 133 * available bytes, R/Only */ 134#define MCS7840_DEV_REG_ZERO_PERIOD1 0x3a /* Period between zero out 135 * frames for Port 1, R/W */ 136#define MCS7840_DEV_REG_ZERO_PERIOD2 0x3b /* Period between zero out 137 * frames for Port 1, R/W */ 138#define MCS7840_DEV_REG_ZERO_PERIOD3 0x3c /* Period between zero out 139 * frames for Port 1, R/W */ 140#define MCS7840_DEV_REG_ZERO_PERIOD4 0x3d /* Period between zero out 141 * frames for Port 1, R/W */ 142#define MCS7840_DEV_REG_ZERO_ENABLE 0x3e /* Enable/disable of zero out 143 * frames, R/W */ 144#define MCS7840_DEV_REG_THR_VAL_LOW1 0x3f /* Low 8 bits of threshold 145 * value for Bulk-Out for Port 146 * 1, R/W */ 147#define MCS7840_DEV_REG_THR_VAL_HIGH1 0x40 /* High 1 bit of threshold 148 * value for Bulk-Out and 149 * enable flag for Port 1, R/W */ 150#define MCS7840_DEV_REG_THR_VAL_LOW2 0x41 /* Low 8 bits of threshold 151 * value for Bulk-Out for Port 152 * 2, R/W */ 153#define MCS7840_DEV_REG_THR_VAL_HIGH2 0x42 /* High 1 bit of threshold 154 * value for Bulk-Out and 155 * enable flag for Port 2, R/W */ 156#define MCS7840_DEV_REG_THR_VAL_LOW3 0x43 /* Low 8 bits of threshold 157 * value for Bulk-Out for Port 158 * 3, R/W */ 159#define MCS7840_DEV_REG_THR_VAL_HIGH3 0x44 /* High 1 bit of threshold 160 * value for Bulk-Out and 161 * enable flag for Port 3, R/W */ 162#define MCS7840_DEV_REG_THR_VAL_LOW4 0x45 /* Low 8 bits of threshold 163 * value for Bulk-Out for Port 164 * 4, R/W */ 165#define MCS7840_DEV_REG_THR_VAL_HIGH4 0x46 /* High 1 bit of threshold 166 * value for Bulk-Out and 167 * enable flag for Port 4, R/W */ 168 169/* Bits for SPx registers */ 170#define MCS7840_DEV_SPx_LOOP_PIPES 0x01 /* Loop Bulk-Out FIFO to the 171 * Bulk-In FIFO, default = 0 */ 172#define MCS7840_DEV_SPx_SKIP_ERR_DATA 0x02 /* Drop data bytes from UART, 173 * which were recevied with 174 * errors, default = 0 */ 175#define MCS7840_DEV_SPx_RESET_OUT_FIFO 0x04 /* Reset Bulk-Out FIFO */ 176#define MCS7840_DEV_SPx_RESET_IN_FIFO 0x08 /* Reset Bulk-In FIFO */ 177#define MCS7840_DEV_SPx_CLOCK_MASK 0x70 /* Mask to extract Baud CLK 178 * source */ 179#define MCS7840_DEV_SPx_CLOCK_X1 0x00 /* CLK = 1.8432Mhz, max speed 180 * = 115200 bps, default */ 181#define MCS7840_DEV_SPx_CLOCK_X2 0x10 /* CLK = 3.6864Mhz, max speed 182 * = 230400 bps */ 183#define MCS7840_DEV_SPx_CLOCK_X35 0x20 /* CLK = 6.4512Mhz, max speed 184 * = 403200 bps */ 185#define MCS7840_DEV_SPx_CLOCK_X4 0x30 /* CLK = 7.3728Mhz, max speed 186 * = 460800 bps */ 187#define MCS7840_DEV_SPx_CLOCK_X7 0x40 /* CLK = 12.9024Mhz, max speed 188 * = 806400 bps */ 189#define MCS7840_DEV_SPx_CLOCK_X8 0x50 /* CLK = 14.7456Mhz, max speed 190 * = 921600 bps */ 191#define MCS7840_DEV_SPx_CLOCK_24MHZ 0x60 /* CLK = 24.0000Mhz, max speed 192 * = 1.5 Mbps */ 193#define MCS7840_DEV_SPx_CLOCK_48MHZ 0x70 /* CLK = 48.0000Mhz, max speed 194 * = 3.0 Mbps */ 195#define MCS7840_DEV_SPx_CLOCK_SHIFT 4 /* Value 0..7 can be shifted 196 * to get clock value */ 197#define MCS7840_DEV_SPx_UART_RESET 0x80 /* Reset UART */ 198 199/* Bits for CONTROLx registers */ 200#define MCS7840_DEV_CONTROLx_HWFC 0x01 /* Enable hardware flow 201 * control (when power 202 * down? It is unclear 203 * in documents), 204 * default = 0 */ 205#define MCS7840_DEV_CONTROLx_UNUNSED1 0x02 /* Reserved */ 206#define MCS7840_DEV_CONTROLx_CTS_ENABLE 0x04 /* CTS changes are 207 * translated to MSR, 208 * default = 0 */ 209#define MCS7840_DEV_CONTROLx_UNUSED2 0x08 /* Reserved for ports 210 * 2,3,4 */ 211#define MCS7840_DEV_CONTROL1_DRIVER_DONE 0x08 /* USB enumerating is 212 * finished, USB 213 * enumeration memory 214 * can be used as FIFOs */ 215#define MCS7840_DEV_CONTROLx_RX_NEGATE 0x10 /* Negate RX input, 216 * works for IrDA mode 217 * only, default = 0 */ 218#define MCS7840_DEV_CONTROLx_RX_DISABLE 0x20 /* Disable RX logic, 219 * works only for 220 * RS-232/RS-485 mode, 221 * default = 0 */ 222#define MCS7840_DEV_CONTROLx_FSM_CONTROL 0x40 /* Disable RX FSM when 223 * TX is in progress, 224 * works for IrDA mode 225 * only, default = 0 */ 226#define MCS7840_DEV_CONTROLx_UNUSED3 0x80 /* Reserved */ 227 228/* 229 * Bits for PINPONGx registers 230 * These registers control how often two input buffers 231 * for Bulk-In FIFOs are swapped. One of buffers is used 232 * for USB trnasfer, other for receiving data from UART. 233 * Exact meaning of 15 bit value in these registers is unknown 234 */ 235#define MCS7840_DEV_PINPONGHIGH_MULT 128 /* Only 7 bits in PINPONGLOW 236 * register */ 237#define MCS7840_DEV_PINPONGLOW_BITS 7 /* Only 7 bits in PINPONGLOW 238 * register */ 239 240/* 241 * THIS ONE IS UNDOCUMENTED IN FULL DATASHEET, but e-mail from tech support 242 * confirms, that it is register for GPIO_0 and GPIO_1 data input/output. 243 * Chips has 2 GPIO, but first one (lower bit) MUST be used by device 244 * authors as "number of port" indicator, grounded (0) for two-port 245 * devices and pulled-up to 1 for 4-port devices. 246 */ 247#define MCS7840_DEV_GPIO_4PORTS 0x01 /* Device has 4 ports 248 * configured */ 249#define MCS7840_DEV_GPIO_GPIO_0 0x01 /* The same as above */ 250#define MCS7840_DEV_GPIO_GPIO_1 0x02 /* GPIO_1 data */ 251 252/* 253 * Constants for PLL dividers 254 * Ouptut frequency of PLL is: 255 * Fout = (N/M) * Fin. 256 * Default PLL input frequency Fin is 12Mhz (on-chip). 257 */ 258#define MCS7840_DEV_PLL_DIV_M_BITS 6 /* Number of useful bits for M 259 * divider */ 260#define MCS7840_DEV_PLL_DIV_M_MASK 0x3f /* Mask for M divider */ 261#define MCS7840_DEV_PLL_DIV_M_MIN 1 /* Minimum value for M, 0 is 262 * forbidden */ 263#define MCS7840_DEV_PLL_DIV_M_DEF 1 /* Default value for M */ 264#define MCS7840_DEV_PLL_DIV_M_MAX 63 /* Maximum value for M */ 265#define MCS7840_DEV_PLL_DIV_N_BITS 6 /* Number of useful bits for N 266 * divider */ 267#define MCS7840_DEV_PLL_DIV_N_MASK 0x3f /* Mask for N divider */ 268#define MCS7840_DEV_PLL_DIV_N_MIN 1 /* Minimum value for N, 0 is 269 * forbidden */ 270#define MCS7840_DEV_PLL_DIV_N_DEF 8 /* Default value for N */ 271#define MCS7840_DEV_PLL_DIV_N_MAX 63 /* Maximum value for N */ 272 273/* Bits for CLOCK_MUX register */ 274#define MCS7840_DEV_CLOCK_MUX_INPUTMASK 0x03 /* Mask to extract PLL clock 275 * input */ 276#define MCS7840_DEV_CLOCK_MUX_IN12MHZ 0x00 /* 12Mhz PLL input, default */ 277#define MCS7840_DEV_CLOCK_MUX_INEXTRN 0x01 /* External (device-depended) 278 * PLL input */ 279#define MCS7840_DEV_CLOCK_MUX_INRSV1 0x02 /* Reserved */ 280#define MCS7840_DEV_CLOCK_MUX_INRSV2 0x03 /* Reserved */ 281#define MCS7840_DEV_CLOCK_MUX_PLLHIGH 0x04 /* 0 = PLL Output is 282 * 20MHz-100MHz (default), 1 = 283 * 100MHz-300MHz range */ 284#define MCS7840_DEV_CLOCK_MUX_INTRFIFOS 0x08 /* Enable additional 8 bytes 285 * fro Interrupt USB pipe with 286 * USB FIFOs statuses, default 287 * = 0 */ 288#define MCS7840_DEV_CLOCK_MUX_RESERVED1 0x10 /* Unused */ 289#define MCS7840_DEV_CLOCK_MUX_RESERVED2 0x20 /* Unused */ 290#define MCS7840_DEV_CLOCK_MUX_RESERVED3 0x40 /* Unused */ 291#define MCS7840_DEV_CLOCK_MUX_RESERVED4 0x80 /* Unused */ 292 293/* Bits for CLOCK_SELECTxx registers */ 294#define MCS7840_DEV_CLOCK_SELECT1_MASK 0x07 /* Bits for port 1 in 295 * CLOCK_SELECT12 */ 296#define MCS7840_DEV_CLOCK_SELECT1_SHIFT 0 /* Shift for port 1in 297 * CLOCK_SELECT12 */ 298#define MCS7840_DEV_CLOCK_SELECT2_MASK 0x38 /* Bits for port 2 in 299 * CLOCK_SELECT12 */ 300#define MCS7840_DEV_CLOCK_SELECT2_SHIFT 3 /* Shift for port 2 in 301 * CLOCK_SELECT12 */ 302#define MCS7840_DEV_CLOCK_SELECT3_MASK 0x07 /* Bits for port 3 in 303 * CLOCK_SELECT23 */ 304#define MCS7840_DEV_CLOCK_SELECT3_SHIFT 0 /* Shift for port 3 in 305 * CLOCK_SELECT23 */ 306#define MCS7840_DEV_CLOCK_SELECT4_MASK 0x38 /* Bits for port 4 in 307 * CLOCK_SELECT23 */ 308#define MCS7840_DEV_CLOCK_SELECT4_SHIFT 3 /* Shift for port 4 in 309 * CLOCK_SELECT23 */ 310#define MCS7840_DEV_CLOCK_SELECT_STD 0x00 /* STANDARD baudrate derived 311 * from 96Mhz, default for all 312 * ports */ 313#define MCS7840_DEV_CLOCK_SELECT_30MHZ 0x01 /* 30Mhz */ 314#define MCS7840_DEV_CLOCK_SELECT_96MHZ 0x02 /* 96Mhz direct */ 315#define MCS7840_DEV_CLOCK_SELECT_120MHZ 0x03 /* 120Mhz */ 316#define MCS7840_DEV_CLOCK_SELECT_PLL 0x04 /* PLL output (see for M and N 317 * dividers) */ 318#define MCS7840_DEV_CLOCK_SELECT_EXT 0x05 /* External clock input 319 * (device-dependend) */ 320#define MCS7840_DEV_CLOCK_SELECT_RES1 0x06 /* Unused */ 321#define MCS7840_DEV_CLOCK_SELECT_RES2 0x07 /* Unused */ 322 323/* Bits for MODE register */ 324#define MCS7840_DEV_MODE_RESERVED1 0x01 /* Unused */ 325#define MCS7840_DEV_MODE_RESET 0x02 /* 0: RESET = Active High 326 * (default), 1: Reserved (?) */ 327#define MCS7840_DEV_MODE_SER_PRSNT 0x04 /* 0: Reserved, 1: Do not use 328 * hardocded values (default) 329 * (?) */ 330#define MCS7840_DEV_MODE_PLLBYPASS 0x08 /* 1: PLL output is bypassed, 331 * default = 0 */ 332#define MCS7840_DEV_MODE_PORBYPASS 0x10 /* 1: Power-On Reset is 333 * bypassed, default = 0 */ 334#define MCS7840_DEV_MODE_SELECT24S 0x20 /* 0: 4 Serial Ports / IrDA 335 * active, 1: 2 Serial Ports / 336 * IrDA active */ 337#define MCS7840_DEV_MODE_EEPROMWR 0x40 /* EEPROM write is enabled, 338 * default */ 339#define MCS7840_DEV_MODE_IRDA 0x80 /* IrDA mode is activated 340 * (could be turned on), 341 * default */ 342 343/* Bits for SPx ICG */ 344#define MCS7840_DEV_SPx_ICG_DEF 0x24 /* All 8 bits is used as 345 * number of BAUD clocks of 346 * pause */ 347 348/* 349 * Bits for RX_SAMPLINGxx registers 350 * These registers control when bit value will be sampled within 351 * the baud period. 352 * 0 is very beginning of period, 15 is very end, 7 is the middle. 353 */ 354#define MCS7840_DEV_RX_SAMPLING1_MASK 0x0f /* Bits for port 1 in 355 * RX_SAMPLING12 */ 356#define MCS7840_DEV_RX_SAMPLING1_SHIFT 0 /* Shift for port 1in 357 * RX_SAMPLING12 */ 358#define MCS7840_DEV_RX_SAMPLING2_MASK 0xf0 /* Bits for port 2 in 359 * RX_SAMPLING12 */ 360#define MCS7840_DEV_RX_SAMPLING2_SHIFT 4 /* Shift for port 2 in 361 * RX_SAMPLING12 */ 362#define MCS7840_DEV_RX_SAMPLING3_MASK 0x0f /* Bits for port 3 in 363 * RX_SAMPLING23 */ 364#define MCS7840_DEV_RX_SAMPLING3_SHIFT 0 /* Shift for port 3 in 365 * RX_SAMPLING23 */ 366#define MCS7840_DEV_RX_SAMPLING4_MASK 0xf0 /* Bits for port 4 in 367 * RX_SAMPLING23 */ 368#define MCS7840_DEV_RX_SAMPLING4_SHIFT 4 /* Shift for port 4 in 369 * RX_SAMPLING23 */ 370#define MCS7840_DEV_RX_SAMPLINGx_MIN 0 /* Max for any RX Sampling */ 371#define MCS7840_DEV_RX_SAMPLINGx_DEF 7 /* Default for any RX 372 * Sampling, center of period */ 373#define MCS7840_DEV_RX_SAMPLINGx_MAX 15 /* Min for any RX Sampling */ 374 375/* Bits for ZERO_PERIODx */ 376#define MCS7840_DEV_ZERO_PERIODx_DEF 20 /* Number of Bulk-in requests 377 * befor sending zero-sized 378 * reply */ 379 380/* Bits for ZERO_ENABLE */ 381#define MCS7840_DEV_ZERO_ENABLE_PORT1 0x01 /* Enable of sending 382 * zero-sized replies for port 383 * 1, default */ 384#define MCS7840_DEV_ZERO_ENABLE_PORT2 0x02 /* Enable of sending 385 * zero-sized replies for port 386 * 2, default */ 387#define MCS7840_DEV_ZERO_ENABLE_PORT3 0x04 /* Enable of sending 388 * zero-sized replies for port 389 * 3, default */ 390#define MCS7840_DEV_ZERO_ENABLE_PORT4 0x08 /* Enable of sending 391 * zero-sized replies for port 392 * 4, default */ 393 394/* Bits for THR_VAL_HIGHx */ 395#define MCS7840_DEV_THR_VAL_HIGH_MASK 0x01 /* Only one bit is used */ 396#define MCS7840_DEV_THR_VAL_HIGH_MUL 256 /* This one bit is means "256" */ 397#define MCS7840_DEV_THR_VAL_HIGH_SHIFT 8 /* This one bit is means "256" */ 398#define MCS7840_DEV_THR_VAL_HIGH_ENABLE 0x80 /* Enable threshold */ 399 400/* These are documented in "public" datasheet */ 401#define MCS7840_DEV_REG_DCR0_1 0x04 /* Device contol register 0 for Port 402 * 1, R/W */ 403#define MCS7840_DEV_REG_DCR1_1 0x05 /* Device contol register 1 for Port 404 * 1, R/W */ 405#define MCS7840_DEV_REG_DCR2_1 0x06 /* Device contol register 2 for Port 406 * 1, R/W */ 407#define MCS7840_DEV_REG_DCR0_2 0x16 /* Device contol register 0 for Port 408 * 2, R/W */ 409#define MCS7840_DEV_REG_DCR1_2 0x17 /* Device contol register 1 for Port 410 * 2, R/W */ 411#define MCS7840_DEV_REG_DCR2_2 0x18 /* Device contol register 2 for Port 412 * 2, R/W */ 413#define MCS7840_DEV_REG_DCR0_3 0x19 /* Device contol register 0 for Port 414 * 3, R/W */ 415#define MCS7840_DEV_REG_DCR1_3 0x1a /* Device contol register 1 for Port 416 * 3, R/W */ 417#define MCS7840_DEV_REG_DCR2_3 0x1b /* Device contol register 2 for Port 418 * 3, R/W */ 419#define MCS7840_DEV_REG_DCR0_4 0x1c /* Device contol register 0 for Port 420 * 4, R/W */ 421#define MCS7840_DEV_REG_DCR1_4 0x1d /* Device contol register 1 for Port 422 * 4, R/W */ 423#define MCS7840_DEV_REG_DCR2_4 0x1e /* Device contol register 2 for Port 424 * 4, R/W */ 425 426/* Bits of DCR0 registers, documented in datasheet */ 427#define MCS7840_DEV_DCR0_PWRSAVE 0x01 /* Shutdown transiver 428 * when USB Suspend is 429 * engaged, default = 1 */ 430#define MCS7840_DEV_DCR0_RESERVED1 0x02 /* Unused */ 431#define MCS7840_DEV_DCR0_GPIO_MODE_MASK 0x0c /* GPIO Mode bits, WORKS 432 * ONLY FOR PORT 1 */ 433#define MCS7840_DEV_DCR0_GPIO_MODE_IN 0x00 /* GPIO Mode - Input 434 * (0b00), WORKS ONLY 435 * FOR PORT 1 */ 436#define MCS7840_DEV_DCR0_GPIO_MODE_OUT 0x08 /* GPIO Mode - Input 437 * (0b10), WORKS ONLY 438 * FOR PORT 1 */ 439#define MCS7840_DEV_DCR0_RTS_ACTIVE_HIGH 0x10 /* RTS Active is HIGH, 440 * default = 0 (low) */ 441#define MCS7840_DEV_DCR0_RTS_AUTO 0x20 /* RTS is controlled by 442 * state of TX buffer, 443 * default = 0 444 * (controlled by MCR) */ 445#define MCS7840_DEV_DCR0_IRDA 0x40 /* IrDA mode */ 446#define MCS7840_DEV_DCR0_RESERVED2 0x80 /* Unused */ 447 448/* Bits of DCR1 registers, documented in datasheet */ 449#define MCS7840_DEV_DCR1_GPIO_CURRENT_MASK 0x03 /* Mask to extract GPIO 450 * current value, WORKS 451 * ONLY FOR PORT 1 */ 452#define MCS7840_DEV_DCR1_GPIO_CURRENT_6MA 0x00 /* GPIO output current 453 * 6mA, WORKS ONLY FOR 454 * PORT 1 */ 455#define MCS7840_DEV_DCR1_GPIO_CURRENT_8MA 0x01 /* GPIO output current 456 * 8mA, defauilt, WORKS 457 * ONLY FOR PORT 1 */ 458#define MCS7840_DEV_DCR1_GPIO_CURRENT_10MA 0x02 /* GPIO output current 459 * 10mA, WORKS ONLY FOR 460 * PORT 1 */ 461#define MCS7840_DEV_DCR1_GPIO_CURRENT_12MA 0x03 /* GPIO output current 462 * 12mA, WORKS ONLY FOR 463 * PORT 1 */ 464#define MCS7840_DEV_DCR1_UART_CURRENT_MASK 0x0c /* Mask to extract UART 465 * signals current value */ 466#define MCS7840_DEV_DCR1_UART_CURRENT_6MA 0x00 /* UART output current 467 * 6mA */ 468#define MCS7840_DEV_DCR1_UART_CURRENT_8MA 0x04 /* UART output current 469 * 8mA, defauilt */ 470#define MCS7840_DEV_DCR1_UART_CURRENT_10MA 0x08 /* UART output current 471 * 10mA */ 472#define MCS7840_DEV_DCR1_UART_CURRENT_12MA 0x0c /* UART output current 473 * 12mA */ 474#define MCS7840_DEV_DCR1_WAKEUP_DISABLE 0x10 /* Disable Remote USB 475 * Wakeup */ 476#define MCS7840_DEV_DCR1_PLLPWRDOWN_DISABLE 0x20 /* Disable PLL power 477 * down when not needed, 478 * WORKS ONLY FOR PORT 1 */ 479#define MCS7840_DEV_DCR1_LONG_INTERRUPT 0x40 /* Enable 13 bytes of 480 * interrupt data, with 481 * FIFO statistics, 482 * WORKS ONLY FOR PORT 1 */ 483#define MCS7840_DEV_DCR1_RESERVED1 0x80 /* Unused */ 484 485/* 486 * Bits of DCR2 registers, documented in datasheet 487 * Wakeup will work only if DCR0_IRDA = 0 (RS-xxx mode) and 488 * DCR1_WAKEUP_DISABLE = 0 (wakeup enabled). 489 */ 490#define MCS7840_DEV_DCR2_WAKEUP_CTS 0x01 /* Wakeup on CTS change, 491 * default = 0 */ 492#define MCS7840_DEV_DCR2_WAKEUP_DCD 0x02 /* Wakeup on DCD change, 493 * default = 0 */ 494#define MCS7840_DEV_DCR2_WAKEUP_RI 0x04 /* Wakeup on RI change, 495 * default = 1 */ 496#define MCS7840_DEV_DCR2_WAKEUP_DSR 0x08 /* Wakeup on DSR change, 497 * default = 0 */ 498#define MCS7840_DEV_DCR2_WAKEUP_RXD 0x10 /* Wakeup on RX Data change, 499 * default = 0 */ 500#define MCS7840_DEV_DCR2_WAKEUP_RESUME 0x20 /* Wakeup issues RESUME 501 * signal, DISCONNECT 502 * otherwise, default = 1 */ 503#define MCS7840_DEV_DCR2_RESERVED1 0x40 /* Unused */ 504#define MCS7840_DEV_DCR2_SHDN_POLARITY 0x80 /* 0: Pin 12 Active Low, 1: 505 * Pin 12 Active High, default 506 * = 0 */ 507 508/* Interrupt endpoint bytes & bits */ 509#define MCS7840_IEP_FIFO_STATUS_INDEX 5 510/* 511 * Thesse can be calculated as "1 << portnumber" for Bulk-out and 512 * "1 << (portnumber+1)" for Bulk-in 513 */ 514#define MCS7840_IEP_BO_PORT1_HASDATA 0x01 515#define MCS7840_IEP_BI_PORT1_HASDATA 0x02 516#define MCS7840_IEP_BO_PORT2_HASDATA 0x04 517#define MCS7840_IEP_BI_PORT2_HASDATA 0x08 518#define MCS7840_IEP_BO_PORT3_HASDATA 0x10 519#define MCS7840_IEP_BI_PORT3_HASDATA 0x20 520#define MCS7840_IEP_BO_PORT4_HASDATA 0x40 521#define MCS7840_IEP_BI_PORT4_HASDATA 0x80 522 523/* Documented UART registers (fully compatible with 16550 UART) */ 524#define MCS7840_UART_REG_THR 0x00 /* Transmitter Holding 525 * Register W/Only */ 526#define MCS7840_UART_REG_RHR 0x00 /* Receiver Holding Register 527 * R/Only */ 528#define MCS7840_UART_REG_IER 0x01 /* Interrupt enable register - 529 * R/W */ 530#define MCS7840_UART_REG_FCR 0x02 /* FIFO Control register - 531 * W/Only */ 532#define MCS7840_UART_REG_ISR 0x02 /* Interrupt Status Registter 533 * R/Only */ 534#define MCS7840_UART_REG_LCR 0x03 /* Line control register R/W */ 535#define MCS7840_UART_REG_MCR 0x04 /* Modem control register R/W */ 536#define MCS7840_UART_REG_LSR 0x05 /* Line status register R/Only */ 537#define MCS7840_UART_REG_MSR 0x06 /* Modem status register 538 * R/Only */ 539#define MCS7840_UART_REG_SCRATCHPAD 0x07 /* Scratch pad register */ 540 541#define MCS7840_UART_REG_DLL 0x00 /* Low bits of BAUD divider */ 542#define MCS7840_UART_REG_DLM 0x01 /* High bits of BAUD divider */ 543 544/* IER bits */ 545#define MCS7840_UART_IER_RXREADY 0x01 /* RX Ready interrumpt mask */ 546#define MCS7840_UART_IER_TXREADY 0x02 /* TX Ready interrumpt mask */ 547#define MCS7840_UART_IER_RXSTAT 0x04 /* RX Status interrumpt mask */ 548#define MCS7840_UART_IER_MODEM 0x08 /* Modem status change 549 * interrumpt mask */ 550#define MCS7840_UART_IER_SLEEP 0x10 /* SLEEP enable */ 551 552/* FCR bits */ 553#define MCS7840_UART_FCR_ENABLE 0x01 /* Enable FIFO */ 554#define MCS7840_UART_FCR_FLUSHRHR 0x02 /* Flush RHR and FIFO */ 555#define MCS7840_UART_FCR_FLUSHTHR 0x04 /* Flush THR and FIFO */ 556#define MCS7840_UART_FCR_RTLMASK 0xa0 /* Mask to select RHR 557 * Interrupt Trigger level */ 558#define MCS7840_UART_FCR_RTL_1_1 0x00 /* L1 = 1, L2 = 1 */ 559#define MCS7840_UART_FCR_RTL_1_4 0x40 /* L1 = 1, L2 = 4 */ 560#define MCS7840_UART_FCR_RTL_1_8 0x80 /* L1 = 1, L2 = 8 */ 561#define MCS7840_UART_FCR_RTL_1_14 0xa0 /* L1 = 1, L2 = 14 */ 562 563/* ISR bits */ 564#define MCS7840_UART_ISR_NOPENDING 0x01 /* No interrupt pending */ 565#define MCS7840_UART_ISR_INTMASK 0x3f /* Mask to select interrupt 566 * source */ 567#define MCS7840_UART_ISR_RXERR 0x06 /* Recevir error */ 568#define MCS7840_UART_ISR_RXHASDATA 0x04 /* Recevier has data */ 569#define MCS7840_UART_ISR_RXTIMEOUT 0x0c /* Recevier timeout */ 570#define MCS7840_UART_ISR_TXEMPTY 0x02 /* Transmitter empty */ 571#define MCS7840_UART_ISR_MSCHANGE 0x00 /* Modem status change */ 572 573/* LCR bits */ 574#define MCS7840_UART_LCR_DATALENMASK 0x03 /* Mask for data length */ 575#define MCS7840_UART_LCR_DATALEN5 0x00 /* 5 data bits */ 576#define MCS7840_UART_LCR_DATALEN6 0x01 /* 6 data bits */ 577#define MCS7840_UART_LCR_DATALEN7 0x02 /* 7 data bits */ 578#define MCS7840_UART_LCR_DATALEN8 0x03 /* 8 data bits */ 579 580#define MCS7840_UART_LCR_STOPBMASK 0x04 /* Mask for stop bits */ 581#define MCS7840_UART_LCR_STOPB1 0x00 /* 1 stop bit in any case */ 582#define MCS7840_UART_LCR_STOPB2 0x04 /* 1.5-2 stop bits depends on 583 * data length */ 584 585#define MCS7840_UART_LCR_PARITYMASK 0x38 /* Mask for all parity data */ 586#define MCS7840_UART_LCR_PARITYON 0x08 /* Parity ON/OFF - ON */ 587#define MCS7840_UART_LCR_PARITYODD 0x00 /* Parity Odd */ 588#define MCS7840_UART_LCR_PARITYEVEN 0x10 /* Parity Even */ 589#define MCS7840_UART_LCR_PARITYODD 0x00 /* Parity Odd */ 590#define MCS7840_UART_LCR_PARITYFORCE 0x20 /* Force parity odd/even */ 591 592#define MCS7840_UART_LCR_BREAK 0x40 /* Send BREAK */ 593#define MCS7840_UART_LCR_DIVISORS 0x80 /* Map DLL/DLM instead of 594 * xHR/IER */ 595 596/* LSR bits */ 597#define MCS7840_UART_LSR_RHRAVAIL 0x01 /* Data available for read */ 598#define MCS7840_UART_LSR_RHROVERRUN 0x02 /* Data FIFO/register overflow */ 599#define MCS7840_UART_LSR_PARITYERR 0x04 /* Parity error */ 600#define MCS7840_UART_LSR_FRAMEERR 0x10 /* Framing error */ 601#define MCS7840_UART_LSR_BREAKERR 0x20 /* BREAK signal received */ 602#define MCS7840_UART_LSR_THREMPTY 0x40 /* THR register is empty, 603 * ready for transmit */ 604#define MCS7840_UART_LSR_HASERR 0x80 /* Has error in receiver FIFO */ 605 606/* MCR bits */ 607#define MCS7840_UART_MCR_DTR 0x01 /* Force DTR to be active 608 * (low) */ 609#define MCS7840_UART_MCR_RTS 0x02 /* Force RTS to be active 610 * (low) */ 611#define MCS7840_UART_MCR_IE 0x04 /* Enable interrupts (from 612 * code, not documented) */ 613#define MCS7840_UART_MCR_LOOPBACK 0x10 /* Enable local loopback test 614 * mode */ 615#define MCS7840_UART_MCR_CTSRTS 0x20 /* Enable CTS/RTS flow control 616 * in 550 (FIFO) mode */ 617#define MCS7840_UART_MCR_DTRDSR 0x40 /* Enable DTR/DSR flow control 618 * in 550 (FIFO) mode */ 619#define MCS7840_UART_MCR_DCD 0x80 /* Enable DCD flow control in 620 * 550 (FIFO) mode */ 621 622/* MSR bits */ 623#define MCS7840_UART_MSR_DELTACTS 0x01 /* CTS was changed since last 624 * read */ 625#define MCS7840_UART_MSR_DELTADSR 0x02 /* DSR was changed since last 626 * read */ 627#define MCS7840_UART_MSR_DELTARI 0x04 /* RI was changed from low to 628 * high since last read */ 629#define MCS7840_UART_MSR_DELTADCD 0x08 /* DCD was changed since last 630 * read */ 631#define MCS7840_UART_MSR_NEGCTS 0x10 /* Negated CTS signal */ 632#define MCS7840_UART_MSR_NEGDSR 0x20 /* Negated DSR signal */ 633#define MCS7840_UART_MSR_NEGRI 0x40 /* Negated RI signal */ 634#define MCS7840_UART_MSR_NEGDCD 0x80 /* Negated DCD signal */ 635 636/* SCRATCHPAD bits */ 637#define MCS7840_UART_SCRATCHPAD_RS232 0x00 /* RS-485 disabled */ 638#define MCS7840_UART_SCRATCHPAD_RS485_DTRRX 0x80 /* RS-485 mode, DTR High 639 * = RX */ 640#define MCS7840_UART_SCRATCHPAD_RS485_DTRTX 0xc0 /* RS-485 mode, DTR High 641 * = TX */ 642 643#define MCS7840_CONFIG_INDEX 0 644#define MCS7840_IFACE_INDEX 0 645 646#endif 647