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 19 struct lx6464es; 20 21 /* low-level register access */ 22 23 /* dsp register access */ 24 enum { 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 59 unsigned long lx_dsp_reg_read(struct lx6464es *chip, int port); 60 void lx_dsp_reg_write(struct lx6464es *chip, int port, unsigned data); 61 62 /* plx register access */ 63 enum { 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 82 unsigned long lx_plx_reg_read(struct lx6464es *chip, int port); 83 void lx_plx_reg_write(struct lx6464es *chip, int port, u32 data); 84 85 /* rhm */ 86 struct 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 */ 97 int lx_dsp_get_version(struct lx6464es *chip, u32 *rdsp_version); 98 int lx_dsp_get_clock_frequency(struct lx6464es *chip, u32 *rfreq); 99 int lx_dsp_set_granularity(struct lx6464es *chip, u32 gran); 100 int lx_dsp_read_async_events(struct lx6464es *chip, u32 *data); 101 int lx_dsp_get_mac(struct lx6464es *chip); 102 103 104 /* low-level pipe handling */ 105 int lx_pipe_allocate(struct lx6464es *chip, u32 pipe, int is_capture, 106 int channels); 107 int lx_pipe_release(struct lx6464es *chip, u32 pipe, int is_capture); 108 int lx_pipe_sample_count(struct lx6464es *chip, u32 pipe, int is_capture, 109 u64 *rsample_count); 110 int lx_pipe_state(struct lx6464es *chip, u32 pipe, int is_capture, u16 *rstate); 111 int lx_pipe_stop(struct lx6464es *chip, u32 pipe, int is_capture); 112 int lx_pipe_start(struct lx6464es *chip, u32 pipe, int is_capture); 113 int lx_pipe_pause(struct lx6464es *chip, u32 pipe, int is_capture); 114 115 int lx_pipe_wait_for_start(struct lx6464es *chip, u32 pipe, int is_capture); 116 int lx_pipe_wait_for_idle(struct lx6464es *chip, u32 pipe, int is_capture); 117 118 /* low-level stream handling */ 119 int lx_stream_set_format(struct lx6464es *chip, struct snd_pcm_runtime *runtime, 120 u32 pipe, int is_capture); 121 int lx_stream_state(struct lx6464es *chip, u32 pipe, int is_capture, 122 int *rstate); 123 int lx_stream_sample_position(struct lx6464es *chip, u32 pipe, int is_capture, 124 u64 *r_bytepos); 125 126 int lx_stream_set_state(struct lx6464es *chip, u32 pipe, 127 int is_capture, enum stream_state_t state); 128 lx_stream_start(struct lx6464es * chip,u32 pipe,int is_capture)129 static inline int lx_stream_start(struct lx6464es *chip, u32 pipe, 130 int is_capture) 131 { 132 return lx_stream_set_state(chip, pipe, is_capture, SSTATE_RUN); 133 } 134 lx_stream_pause(struct lx6464es * chip,u32 pipe,int is_capture)135 static inline int lx_stream_pause(struct lx6464es *chip, u32 pipe, 136 int is_capture) 137 { 138 return lx_stream_set_state(chip, pipe, is_capture, SSTATE_PAUSE); 139 } 140 lx_stream_stop(struct lx6464es * chip,u32 pipe,int is_capture)141 static inline int lx_stream_stop(struct lx6464es *chip, u32 pipe, 142 int is_capture) 143 { 144 return lx_stream_set_state(chip, pipe, is_capture, SSTATE_STOP); 145 } 146 147 /* low-level buffer handling */ 148 int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture, 149 u32 *r_needed, u32 *r_freed, u32 *size_array); 150 int lx_buffer_give(struct lx6464es *chip, u32 pipe, int is_capture, 151 u32 buffer_size, u32 buf_address_lo, u32 buf_address_hi, 152 u32 *r_buffer_index); 153 int lx_buffer_free(struct lx6464es *chip, u32 pipe, int is_capture, 154 u32 *r_buffer_size); 155 int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture, 156 u32 buffer_index); 157 158 /* low-level gain/peak handling */ 159 int lx_level_unmute(struct lx6464es *chip, int is_capture, int unmute); 160 int lx_level_peaks(struct lx6464es *chip, int is_capture, int channels, 161 u32 *r_levels); 162 163 164 /* interrupt handling */ 165 irqreturn_t lx_interrupt(int irq, void *dev_id); 166 irqreturn_t lx_threaded_irq(int irq, void *dev_id); 167 void lx_irq_enable(struct lx6464es *chip); 168 void lx_irq_disable(struct lx6464es *chip); 169 170 171 /* Stream Format Header Defines (for LIN and IEEE754) */ 172 #define HEADER_FMT_BASE HEADER_FMT_BASE_LIN 173 #define HEADER_FMT_BASE_LIN 0xFED00000 174 #define HEADER_FMT_BASE_FLOAT 0xFAD00000 175 #define HEADER_FMT_MONO 0x00000080 /* bit 23 in header_lo. WARNING: old 176 * bit 22 is ignored in float 177 * format */ 178 #define HEADER_FMT_INTEL 0x00008000 179 #define HEADER_FMT_16BITS 0x00002000 180 #define HEADER_FMT_24BITS 0x00004000 181 #define HEADER_FMT_UPTO11 0x00000200 /* frequency is less or equ. to 11k. 182 * */ 183 #define HEADER_FMT_UPTO32 0x00000100 /* frequency is over 11k and less 184 * then 32k.*/ 185 186 187 #define BIT_FMP_HEADER 23 188 #define BIT_FMP_SD 22 189 #define BIT_FMP_MULTICHANNEL 19 190 191 #define START_STATE 1 192 #define PAUSE_STATE 0 193 194 195 196 197 198 /* from PcxAll_e.h */ 199 /* Start/Pause condition for pipes (PCXStartPipe, PCXPausePipe) */ 200 #define START_PAUSE_IMMEDIATE 0 201 #define START_PAUSE_ON_SYNCHRO 1 202 #define START_PAUSE_ON_TIME_CODE 2 203 204 205 /* Pipe / Stream state */ 206 #define START_STATE 1 207 #define PAUSE_STATE 0 208 unpack_pointer(dma_addr_t ptr,u32 * r_low,u32 * r_high)209 static inline void unpack_pointer(dma_addr_t ptr, u32 *r_low, u32 *r_high) 210 { 211 *r_low = (u32)(ptr & 0xffffffff); 212 #if BITS_PER_LONG == 32 213 *r_high = 0; 214 #else 215 *r_high = (u32)((u64)ptr>>32); 216 #endif 217 } 218 219 #endif /* LX_CORE_H */ 220