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lx_core.h
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1 /* -*- linux-c -*- *
2  *
3  * ALSA driver for the digigram lx6464es interface
4  * low-level interface
5  *
6  * Copyright (c) 2009 Tim Blechmann <[email protected]>
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);
75 void lx_dsp_reg_write(struct lx6464es *chip, int port, unsigned data);
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 */
112 int __devinit lx_dsp_get_version(struct lx6464es *chip, u32 *rdsp_version);
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);
116 int lx_dsp_get_mac(struct lx6464es *chip);
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 */
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