1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* -*- linux-c -*- * 3 * 4 * ALSA driver for the digigram lx6464es interface 5 * low-level interface 6 * 7 * Copyright (c) 2009 Tim Blechmann <tim@klingt.org> 8 */ 9 10#ifndef LX_CORE_H 11#define LX_CORE_H 12 13#include <linux/interrupt.h> 14 15#include "lx_defs.h" 16 17#define REG_CRM_NUMBER 12 18 19struct lx6464es; 20 21/* low-level register access */ 22 23/* dsp register access */ 24enum { 25 eReg_BASE, 26 eReg_CSM, 27 eReg_CRM1, 28 eReg_CRM2, 29 eReg_CRM3, 30 eReg_CRM4, 31 eReg_CRM5, 32 eReg_CRM6, 33 eReg_CRM7, 34 eReg_CRM8, 35 eReg_CRM9, 36 eReg_CRM10, 37 eReg_CRM11, 38 eReg_CRM12, 39 40 eReg_ICR, 41 eReg_CVR, 42 eReg_ISR, 43 eReg_RXHTXH, 44 eReg_RXMTXM, 45 eReg_RHLTXL, 46 eReg_RESETDSP, 47 48 eReg_CSUF, 49 eReg_CSES, 50 eReg_CRESMSB, 51 eReg_CRESLSB, 52 eReg_ADMACESMSB, 53 eReg_ADMACESLSB, 54 eReg_CONFES, 55 56 eMaxPortLx 57}; 58 59unsigned long lx_dsp_reg_read(struct lx6464es *chip, int port); 60void lx_dsp_reg_write(struct lx6464es *chip, int port, unsigned data); 61 62/* plx register access */ 63enum { 64 ePLX_PCICR, 65 66 ePLX_MBOX0, 67 ePLX_MBOX1, 68 ePLX_MBOX2, 69 ePLX_MBOX3, 70 ePLX_MBOX4, 71 ePLX_MBOX5, 72 ePLX_MBOX6, 73 ePLX_MBOX7, 74 75 ePLX_L2PCIDB, 76 ePLX_IRQCS, 77 ePLX_CHIPSC, 78 79 eMaxPort 80}; 81 82unsigned long lx_plx_reg_read(struct lx6464es *chip, int port); 83void lx_plx_reg_write(struct lx6464es *chip, int port, u32 data); 84 85/* rhm */ 86struct lx_rmh { 87 u16 cmd_len; /* length of the command to send (WORDs) */ 88 u16 stat_len; /* length of the status received (WORDs) */ 89 u16 dsp_stat; /* status type, RMP_SSIZE_XXX */ 90 u16 cmd_idx; /* index of the command */ 91 u32 cmd[REG_CRM_NUMBER]; 92 u32 stat[REG_CRM_NUMBER]; 93}; 94 95 96/* low-level dsp access */ 97int lx_dsp_get_version(struct lx6464es *chip, u32 *rdsp_version); 98int lx_dsp_get_clock_frequency(struct lx6464es *chip, u32 *rfreq); 99int lx_dsp_set_granularity(struct lx6464es *chip, u32 gran); 100int lx_dsp_read_async_events(struct lx6464es *chip, u32 *data); 101int lx_dsp_get_mac(struct lx6464es *chip); 102 103 104/* low-level pipe handling */ 105int lx_pipe_allocate(struct lx6464es *chip, u32 pipe, int is_capture, 106 int channels); 107int lx_pipe_release(struct lx6464es *chip, u32 pipe, int is_capture); 108int lx_pipe_sample_count(struct lx6464es *chip, u32 pipe, int is_capture, 109 u64 *rsample_count); 110int lx_pipe_state(struct lx6464es *chip, u32 pipe, int is_capture, u16 *rstate); 111int lx_pipe_stop(struct lx6464es *chip, u32 pipe, int is_capture); 112int lx_pipe_start(struct lx6464es *chip, u32 pipe, int is_capture); 113int lx_pipe_pause(struct lx6464es *chip, u32 pipe, int is_capture); 114 115int lx_pipe_wait_for_start(struct lx6464es *chip, u32 pipe, int is_capture); 116int lx_pipe_wait_for_idle(struct lx6464es *chip, u32 pipe, int is_capture); 117 118/* low-level stream handling */ 119int lx_stream_set_format(struct lx6464es *chip, struct snd_pcm_runtime *runtime, 120 u32 pipe, int is_capture); 121int lx_stream_state(struct lx6464es *chip, u32 pipe, int is_capture, 122 int *rstate); 123int lx_stream_sample_position(struct lx6464es *chip, u32 pipe, int is_capture, 124 u64 *r_bytepos); 125 126int lx_stream_set_state(struct lx6464es *chip, u32 pipe, 127 int is_capture, enum stream_state_t state); 128 129static inline int lx_stream_start(struct lx6464es *chip, u32 pipe, 130 int is_capture) 131{ 132 snd_printdd("->lx_stream_start\n"); 133 return lx_stream_set_state(chip, pipe, is_capture, SSTATE_RUN); 134} 135 136static inline int lx_stream_pause(struct lx6464es *chip, u32 pipe, 137 int is_capture) 138{ 139 snd_printdd("->lx_stream_pause\n"); 140 return lx_stream_set_state(chip, pipe, is_capture, SSTATE_PAUSE); 141} 142 143static inline int lx_stream_stop(struct lx6464es *chip, u32 pipe, 144 int is_capture) 145{ 146 snd_printdd("->lx_stream_stop\n"); 147 return lx_stream_set_state(chip, pipe, is_capture, SSTATE_STOP); 148} 149 150/* low-level buffer handling */ 151int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture, 152 u32 *r_needed, u32 *r_freed, u32 *size_array); 153int lx_buffer_give(struct lx6464es *chip, u32 pipe, int is_capture, 154 u32 buffer_size, u32 buf_address_lo, u32 buf_address_hi, 155 u32 *r_buffer_index); 156int lx_buffer_free(struct lx6464es *chip, u32 pipe, int is_capture, 157 u32 *r_buffer_size); 158int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture, 159 u32 buffer_index); 160 161/* low-level gain/peak handling */ 162int lx_level_unmute(struct lx6464es *chip, int is_capture, int unmute); 163int lx_level_peaks(struct lx6464es *chip, int is_capture, int channels, 164 u32 *r_levels); 165 166 167/* interrupt handling */ 168irqreturn_t lx_interrupt(int irq, void *dev_id); 169irqreturn_t lx_threaded_irq(int irq, void *dev_id); 170void lx_irq_enable(struct lx6464es *chip); 171void lx_irq_disable(struct lx6464es *chip); 172 173 174/* Stream Format Header Defines (for LIN and IEEE754) */ 175#define HEADER_FMT_BASE HEADER_FMT_BASE_LIN 176#define HEADER_FMT_BASE_LIN 0xFED00000 177#define HEADER_FMT_BASE_FLOAT 0xFAD00000 178#define HEADER_FMT_MONO 0x00000080 /* bit 23 in header_lo. WARNING: old 179 * bit 22 is ignored in float 180 * format */ 181#define HEADER_FMT_INTEL 0x00008000 182#define HEADER_FMT_16BITS 0x00002000 183#define HEADER_FMT_24BITS 0x00004000 184#define HEADER_FMT_UPTO11 0x00000200 /* frequency is less or equ. to 11k. 185 * */ 186#define HEADER_FMT_UPTO32 0x00000100 /* frequency is over 11k and less 187 * then 32k.*/ 188 189 190#define BIT_FMP_HEADER 23 191#define BIT_FMP_SD 22 192#define BIT_FMP_MULTICHANNEL 19 193 194#define START_STATE 1 195#define PAUSE_STATE 0 196 197 198 199 200 201/* from PcxAll_e.h */ 202/* Start/Pause condition for pipes (PCXStartPipe, PCXPausePipe) */ 203#define START_PAUSE_IMMEDIATE 0 204#define START_PAUSE_ON_SYNCHRO 1 205#define START_PAUSE_ON_TIME_CODE 2 206 207 208/* Pipe / Stream state */ 209#define START_STATE 1 210#define PAUSE_STATE 0 211 212static inline void unpack_pointer(dma_addr_t ptr, u32 *r_low, u32 *r_high) 213{ 214 *r_low = (u32)(ptr & 0xffffffff); 215#if BITS_PER_LONG == 32 216 *r_high = 0; 217#else 218 *r_high = (u32)((u64)ptr>>32); 219#endif 220} 221 222#endif /* LX_CORE_H */ 223