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Linux/sound/pci/lx6464es/lx_core.h

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  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 
129 static 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 
136 static 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 
143 static 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 */
151 int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture,
152                   u32 *r_needed, u32 *r_freed, u32 *size_array);
153 int 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);
156 int lx_buffer_free(struct lx6464es *chip, u32 pipe, int is_capture,
157                    u32 *r_buffer_size);
158 int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture,
159                      u32 buffer_index);
160 
161 /* low-level gain/peak handling */
162 int lx_level_unmute(struct lx6464es *chip, int is_capture, int unmute);
163 int lx_level_peaks(struct lx6464es *chip, int is_capture, int channels,
164                    u32 *r_levels);
165 
166 
167 /* interrupt handling */
168 irqreturn_t lx_interrupt(int irq, void *dev_id);
169 irqreturn_t lx_threaded_irq(int irq, void *dev_id);
170 void lx_irq_enable(struct lx6464es *chip);
171 void 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 
212 static 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 

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