Tim Blechmann | 02bec49 | 2009-03-24 12:24:35 +0100 | [diff] [blame] | 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 | |
| 34 | struct lx6464es; |
| 35 | |
| 36 | /* low-level register access */ |
| 37 | |
| 38 | /* dsp register access */ |
| 39 | enum { |
| 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 | |
| 74 | unsigned long lx_dsp_reg_read(struct lx6464es *chip, int port); |
Tim Blechmann | 02bec49 | 2009-03-24 12:24:35 +0100 | [diff] [blame] | 75 | void lx_dsp_reg_write(struct lx6464es *chip, int port, unsigned data); |
Tim Blechmann | 02bec49 | 2009-03-24 12:24:35 +0100 | [diff] [blame] | 76 | |
| 77 | /* plx register access */ |
| 78 | enum { |
| 79 | ePLX_PCICR, |
| 80 | |
| 81 | ePLX_MBOX0, |
| 82 | ePLX_MBOX1, |
| 83 | ePLX_MBOX2, |
| 84 | ePLX_MBOX3, |
| 85 | ePLX_MBOX4, |
| 86 | ePLX_MBOX5, |
| 87 | ePLX_MBOX6, |
| 88 | ePLX_MBOX7, |
| 89 | |
| 90 | ePLX_L2PCIDB, |
| 91 | ePLX_IRQCS, |
| 92 | ePLX_CHIPSC, |
| 93 | |
| 94 | eMaxPort |
| 95 | }; |
| 96 | |
| 97 | unsigned long lx_plx_reg_read(struct lx6464es *chip, int port); |
| 98 | void lx_plx_reg_write(struct lx6464es *chip, int port, u32 data); |
| 99 | |
| 100 | /* rhm */ |
| 101 | struct lx_rmh { |
| 102 | u16 cmd_len; /* length of the command to send (WORDs) */ |
| 103 | u16 stat_len; /* length of the status received (WORDs) */ |
| 104 | u16 dsp_stat; /* status type, RMP_SSIZE_XXX */ |
| 105 | u16 cmd_idx; /* index of the command */ |
| 106 | u32 cmd[REG_CRM_NUMBER]; |
| 107 | u32 stat[REG_CRM_NUMBER]; |
| 108 | }; |
| 109 | |
| 110 | |
| 111 | /* low-level dsp access */ |
Bill Pemberton | e23e7a1 | 2012-12-06 12:35:10 -0500 | [diff] [blame] | 112 | int lx_dsp_get_version(struct lx6464es *chip, u32 *rdsp_version); |
Tim Blechmann | 02bec49 | 2009-03-24 12:24:35 +0100 | [diff] [blame] | 113 | int lx_dsp_get_clock_frequency(struct lx6464es *chip, u32 *rfreq); |
| 114 | int lx_dsp_set_granularity(struct lx6464es *chip, u32 gran); |
| 115 | int lx_dsp_read_async_events(struct lx6464es *chip, u32 *data); |
Tim Blechmann | 80b5249 | 2011-06-24 17:36:20 +0200 | [diff] [blame] | 116 | int lx_dsp_get_mac(struct lx6464es *chip); |
Tim Blechmann | 02bec49 | 2009-03-24 12:24:35 +0100 | [diff] [blame] | 117 | |
| 118 | |
| 119 | /* low-level pipe handling */ |
| 120 | int lx_pipe_allocate(struct lx6464es *chip, u32 pipe, int is_capture, |
| 121 | int channels); |
| 122 | int lx_pipe_release(struct lx6464es *chip, u32 pipe, int is_capture); |
| 123 | int lx_pipe_sample_count(struct lx6464es *chip, u32 pipe, int is_capture, |
| 124 | u64 *rsample_count); |
| 125 | int lx_pipe_state(struct lx6464es *chip, u32 pipe, int is_capture, u16 *rstate); |
| 126 | int lx_pipe_stop(struct lx6464es *chip, u32 pipe, int is_capture); |
| 127 | int lx_pipe_start(struct lx6464es *chip, u32 pipe, int is_capture); |
| 128 | int lx_pipe_pause(struct lx6464es *chip, u32 pipe, int is_capture); |
| 129 | |
| 130 | int lx_pipe_wait_for_start(struct lx6464es *chip, u32 pipe, int is_capture); |
| 131 | int lx_pipe_wait_for_idle(struct lx6464es *chip, u32 pipe, int is_capture); |
| 132 | |
| 133 | /* low-level stream handling */ |
| 134 | int lx_stream_set_format(struct lx6464es *chip, struct snd_pcm_runtime *runtime, |
| 135 | u32 pipe, int is_capture); |
| 136 | int lx_stream_state(struct lx6464es *chip, u32 pipe, int is_capture, |
| 137 | int *rstate); |
| 138 | int lx_stream_sample_position(struct lx6464es *chip, u32 pipe, int is_capture, |
| 139 | u64 *r_bytepos); |
| 140 | |
| 141 | int lx_stream_set_state(struct lx6464es *chip, u32 pipe, |
| 142 | int is_capture, enum stream_state_t state); |
| 143 | |
| 144 | static inline int lx_stream_start(struct lx6464es *chip, u32 pipe, |
| 145 | int is_capture) |
| 146 | { |
| 147 | snd_printdd("->lx_stream_start\n"); |
| 148 | return lx_stream_set_state(chip, pipe, is_capture, SSTATE_RUN); |
| 149 | } |
| 150 | |
| 151 | static inline int lx_stream_pause(struct lx6464es *chip, u32 pipe, |
| 152 | int is_capture) |
| 153 | { |
| 154 | snd_printdd("->lx_stream_pause\n"); |
| 155 | return lx_stream_set_state(chip, pipe, is_capture, SSTATE_PAUSE); |
| 156 | } |
| 157 | |
| 158 | static inline int lx_stream_stop(struct lx6464es *chip, u32 pipe, |
| 159 | int is_capture) |
| 160 | { |
| 161 | snd_printdd("->lx_stream_stop\n"); |
| 162 | return lx_stream_set_state(chip, pipe, is_capture, SSTATE_STOP); |
| 163 | } |
| 164 | |
| 165 | /* low-level buffer handling */ |
| 166 | int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture, |
| 167 | u32 *r_needed, u32 *r_freed, u32 *size_array); |
| 168 | int lx_buffer_give(struct lx6464es *chip, u32 pipe, int is_capture, |
| 169 | u32 buffer_size, u32 buf_address_lo, u32 buf_address_hi, |
| 170 | u32 *r_buffer_index); |
| 171 | int lx_buffer_free(struct lx6464es *chip, u32 pipe, int is_capture, |
| 172 | u32 *r_buffer_size); |
| 173 | int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture, |
| 174 | u32 buffer_index); |
| 175 | |
| 176 | /* low-level gain/peak handling */ |
| 177 | int lx_level_unmute(struct lx6464es *chip, int is_capture, int unmute); |
| 178 | int lx_level_peaks(struct lx6464es *chip, int is_capture, int channels, |
| 179 | u32 *r_levels); |
| 180 | |
| 181 | |
| 182 | /* interrupt handling */ |
| 183 | irqreturn_t lx_interrupt(int irq, void *dev_id); |
| 184 | void lx_irq_enable(struct lx6464es *chip); |
| 185 | void lx_irq_disable(struct lx6464es *chip); |
| 186 | |
| 187 | void lx_tasklet_capture(unsigned long data); |
| 188 | void lx_tasklet_playback(unsigned long data); |
| 189 | |
| 190 | |
| 191 | /* Stream Format Header Defines (for LIN and IEEE754) */ |
| 192 | #define HEADER_FMT_BASE HEADER_FMT_BASE_LIN |
| 193 | #define HEADER_FMT_BASE_LIN 0xFED00000 |
| 194 | #define HEADER_FMT_BASE_FLOAT 0xFAD00000 |
| 195 | #define HEADER_FMT_MONO 0x00000080 /* bit 23 in header_lo. WARNING: old |
| 196 | * bit 22 is ignored in float |
| 197 | * format */ |
| 198 | #define HEADER_FMT_INTEL 0x00008000 |
| 199 | #define HEADER_FMT_16BITS 0x00002000 |
| 200 | #define HEADER_FMT_24BITS 0x00004000 |
| 201 | #define HEADER_FMT_UPTO11 0x00000200 /* frequency is less or equ. to 11k. |
| 202 | * */ |
| 203 | #define HEADER_FMT_UPTO32 0x00000100 /* frequency is over 11k and less |
| 204 | * then 32k.*/ |
| 205 | |
| 206 | |
| 207 | #define BIT_FMP_HEADER 23 |
| 208 | #define BIT_FMP_SD 22 |
| 209 | #define BIT_FMP_MULTICHANNEL 19 |
| 210 | |
| 211 | #define START_STATE 1 |
| 212 | #define PAUSE_STATE 0 |
| 213 | |
| 214 | |
| 215 | |
| 216 | |
| 217 | |
| 218 | /* from PcxAll_e.h */ |
| 219 | /* Start/Pause condition for pipes (PCXStartPipe, PCXPausePipe) */ |
| 220 | #define START_PAUSE_IMMEDIATE 0 |
| 221 | #define START_PAUSE_ON_SYNCHRO 1 |
| 222 | #define START_PAUSE_ON_TIME_CODE 2 |
| 223 | |
| 224 | |
| 225 | /* Pipe / Stream state */ |
| 226 | #define START_STATE 1 |
| 227 | #define PAUSE_STATE 0 |
| 228 | |
| 229 | static inline void unpack_pointer(dma_addr_t ptr, u32 *r_low, u32 *r_high) |
| 230 | { |
| 231 | *r_low = (u32)(ptr & 0xffffffff); |
| 232 | #if BITS_PER_LONG == 32 |
| 233 | *r_high = 0; |
| 234 | #else |
| 235 | *r_high = (u32)((u64)ptr>>32); |
| 236 | #endif |
| 237 | } |
| 238 | |
| 239 | #endif /* LX_CORE_H */ |