1/* -*- linux-c -*- * 2 * 3 * ALSA driver for the digigram lx6464es interface 4 * low-level interface 5 * 6 * Copyright (c) 2009 Tim Blechmann <tim@klingt.org> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; see the file COPYING. If not, write to 20 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 21 * Boston, MA 02111-1307, USA. 22 * 23 */ 24 25#ifndef LX_CORE_H 26#define LX_CORE_H 27 28#include <linux/interrupt.h> 29 30#include "lx_defs.h" 31 32#define REG_CRM_NUMBER 12 33 34struct lx6464es; 35 36/* low-level register access */ 37 38/* dsp register access */ 39enum { 40 eReg_BASE, 41 eReg_CSM, 42 eReg_CRM1, 43 eReg_CRM2, 44 eReg_CRM3, 45 eReg_CRM4, 46 eReg_CRM5, 47 eReg_CRM6, 48 eReg_CRM7, 49 eReg_CRM8, 50 eReg_CRM9, 51 eReg_CRM10, 52 eReg_CRM11, 53 eReg_CRM12, 54 55 eReg_ICR, 56 eReg_CVR, 57 eReg_ISR, 58 eReg_RXHTXH, 59 eReg_RXMTXM, 60 eReg_RHLTXL, 61 eReg_RESETDSP, 62 63 eReg_CSUF, 64 eReg_CSES, 65 eReg_CRESMSB, 66 eReg_CRESLSB, 67 eReg_ADMACESMSB, 68 eReg_ADMACESLSB, 69 eReg_CONFES, 70 71 eMaxPortLx 72}; 73 74unsigned long lx_dsp_reg_read(struct lx6464es *chip, int port); 75void lx_dsp_reg_readbuf(struct lx6464es *chip, int port, u32 *data, u32 len); 76void lx_dsp_reg_write(struct lx6464es *chip, int port, unsigned data); 77void lx_dsp_reg_writebuf(struct lx6464es *chip, int port, const u32 *data, 78 u32 len); 79 80/* plx register access */ 81enum { 82 ePLX_PCICR, 83 84 ePLX_MBOX0, 85 ePLX_MBOX1, 86 ePLX_MBOX2, 87 ePLX_MBOX3, 88 ePLX_MBOX4, 89 ePLX_MBOX5, 90 ePLX_MBOX6, 91 ePLX_MBOX7, 92 93 ePLX_L2PCIDB, 94 ePLX_IRQCS, 95 ePLX_CHIPSC, 96 97 eMaxPort 98}; 99 100unsigned long lx_plx_reg_read(struct lx6464es *chip, int port); 101void lx_plx_reg_write(struct lx6464es *chip, int port, u32 data); 102 103/* rhm */ 104struct lx_rmh { 105 u16 cmd_len; /* length of the command to send (WORDs) */ 106 u16 stat_len; /* length of the status received (WORDs) */ 107 u16 dsp_stat; /* status type, RMP_SSIZE_XXX */ 108 u16 cmd_idx; /* index of the command */ 109 u32 cmd[REG_CRM_NUMBER]; 110 u32 stat[REG_CRM_NUMBER]; 111}; 112 113 114/* low-level dsp access */ 115int __devinit lx_dsp_get_version(struct lx6464es *chip, u32 *rdsp_version); 116int lx_dsp_get_clock_frequency(struct lx6464es *chip, u32 *rfreq); 117int lx_dsp_set_granularity(struct lx6464es *chip, u32 gran); 118int lx_dsp_read_async_events(struct lx6464es *chip, u32 *data); 119int lx_dsp_get_mac(struct lx6464es *chip, u8 *mac_address); 120 121 122/* low-level pipe handling */ 123int lx_pipe_allocate(struct lx6464es *chip, u32 pipe, int is_capture, 124 int channels); 125int lx_pipe_release(struct lx6464es *chip, u32 pipe, int is_capture); 126int lx_pipe_sample_count(struct lx6464es *chip, u32 pipe, int is_capture, 127 u64 *rsample_count); 128int lx_pipe_state(struct lx6464es *chip, u32 pipe, int is_capture, u16 *rstate); 129int lx_pipe_stop(struct lx6464es *chip, u32 pipe, int is_capture); 130int lx_pipe_start(struct lx6464es *chip, u32 pipe, int is_capture); 131int lx_pipe_pause(struct lx6464es *chip, u32 pipe, int is_capture); 132 133int lx_pipe_wait_for_start(struct lx6464es *chip, u32 pipe, int is_capture); 134int lx_pipe_wait_for_idle(struct lx6464es *chip, u32 pipe, int is_capture); 135 136/* low-level stream handling */ 137int lx_stream_set_format(struct lx6464es *chip, struct snd_pcm_runtime *runtime, 138 u32 pipe, int is_capture); 139int lx_stream_state(struct lx6464es *chip, u32 pipe, int is_capture, 140 int *rstate); 141int lx_stream_sample_position(struct lx6464es *chip, u32 pipe, int is_capture, 142 u64 *r_bytepos); 143 144int lx_stream_set_state(struct lx6464es *chip, u32 pipe, 145 int is_capture, enum stream_state_t state); 146 147static inline int lx_stream_start(struct lx6464es *chip, u32 pipe, 148 int is_capture) 149{ 150 snd_printdd("->lx_stream_start\n"); 151 return lx_stream_set_state(chip, pipe, is_capture, SSTATE_RUN); 152} 153 154static inline int lx_stream_pause(struct lx6464es *chip, u32 pipe, 155 int is_capture) 156{ 157 snd_printdd("->lx_stream_pause\n"); 158 return lx_stream_set_state(chip, pipe, is_capture, SSTATE_PAUSE); 159} 160 161static inline int lx_stream_stop(struct lx6464es *chip, u32 pipe, 162 int is_capture) 163{ 164 snd_printdd("->lx_stream_stop\n"); 165 return lx_stream_set_state(chip, pipe, is_capture, SSTATE_STOP); 166} 167 168/* low-level buffer handling */ 169int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture, 170 u32 *r_needed, u32 *r_freed, u32 *size_array); 171int lx_buffer_give(struct lx6464es *chip, u32 pipe, int is_capture, 172 u32 buffer_size, u32 buf_address_lo, u32 buf_address_hi, 173 u32 *r_buffer_index); 174int lx_buffer_free(struct lx6464es *chip, u32 pipe, int is_capture, 175 u32 *r_buffer_size); 176int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture, 177 u32 buffer_index); 178 179/* low-level gain/peak handling */ 180int lx_level_unmute(struct lx6464es *chip, int is_capture, int unmute); 181int lx_level_peaks(struct lx6464es *chip, int is_capture, int channels, 182 u32 *r_levels); 183 184 185/* interrupt handling */ 186irqreturn_t lx_interrupt(int irq, void *dev_id); 187void lx_irq_enable(struct lx6464es *chip); 188void lx_irq_disable(struct lx6464es *chip); 189 190void lx_tasklet_capture(unsigned long data); 191void lx_tasklet_playback(unsigned long data); 192 193 194/* Stream Format Header Defines (for LIN and IEEE754) */ 195#define HEADER_FMT_BASE HEADER_FMT_BASE_LIN 196#define HEADER_FMT_BASE_LIN 0xFED00000 197#define HEADER_FMT_BASE_FLOAT 0xFAD00000 198#define HEADER_FMT_MONO 0x00000080 /* bit 23 in header_lo. WARNING: old 199 * bit 22 is ignored in float 200 * format */ 201#define HEADER_FMT_INTEL 0x00008000 202#define HEADER_FMT_16BITS 0x00002000 203#define HEADER_FMT_24BITS 0x00004000 204#define HEADER_FMT_UPTO11 0x00000200 /* frequency is less or equ. to 11k. 205 * */ 206#define HEADER_FMT_UPTO32 0x00000100 /* frequency is over 11k and less 207 * then 32k.*/ 208 209 210#define BIT_FMP_HEADER 23 211#define BIT_FMP_SD 22 212#define BIT_FMP_MULTICHANNEL 19 213 214#define START_STATE 1 215#define PAUSE_STATE 0 216 217 218 219 220 221/* from PcxAll_e.h */ 222/* Start/Pause condition for pipes (PCXStartPipe, PCXPausePipe) */ 223#define START_PAUSE_IMMEDIATE 0 224#define START_PAUSE_ON_SYNCHRO 1 225#define START_PAUSE_ON_TIME_CODE 2 226 227 228/* Pipe / Stream state */ 229#define START_STATE 1 230#define PAUSE_STATE 0 231 232static inline void unpack_pointer(dma_addr_t ptr, u32 *r_low, u32 *r_high) 233{ 234 *r_low = (u32)(ptr & 0xffffffff); 235#if BITS_PER_LONG == 32 236 *r_high = 0; 237#else 238 *r_high = (u32)((u64)ptr>>32); 239#endif 240} 241 242#endif /* LX_CORE_H */ 243