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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 <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); | |
75 | void lx_dsp_reg_readbuf(struct lx6464es *chip, int port, u32 *data, u32 len); | |
76 | void lx_dsp_reg_write(struct lx6464es *chip, int port, unsigned data); | |
77 | void lx_dsp_reg_writebuf(struct lx6464es *chip, int port, const u32 *data, | |
78 | u32 len); | |
79 | ||
80 | /* plx register access */ | |
81 | enum { | |
82 | ePLX_PCICR, | |
83 | ||
84 | ePLX_MBOX0, | |
85 | ePLX_MBOX1, | |
86 | ePLX_MBOX2, | |
87 | ePLX_MBOX3, | |
88 | ePLX_MBOX4, | |
89 | ePLX_MBOX5, | |
90 | ePLX_MBOX6, | |
91 | ePLX_MBOX7, | |
92 | ||
93 | ePLX_L2PCIDB, | |
94 | ePLX_IRQCS, | |
95 | ePLX_CHIPSC, | |
96 | ||
97 | eMaxPort | |
98 | }; | |
99 | ||
100 | unsigned long lx_plx_reg_read(struct lx6464es *chip, int port); | |
101 | void lx_plx_reg_write(struct lx6464es *chip, int port, u32 data); | |
102 | ||
103 | /* rhm */ | |
104 | struct lx_rmh { | |
105 | u16 cmd_len; /* length of the command to send (WORDs) */ | |
106 | u16 stat_len; /* length of the status received (WORDs) */ | |
107 | u16 dsp_stat; /* status type, RMP_SSIZE_XXX */ | |
108 | u16 cmd_idx; /* index of the command */ | |
109 | u32 cmd[REG_CRM_NUMBER]; | |
110 | u32 stat[REG_CRM_NUMBER]; | |
111 | }; | |
112 | ||
113 | ||
114 | /* low-level dsp access */ | |
115 | int __devinit lx_dsp_get_version(struct lx6464es *chip, u32 *rdsp_version); | |
116 | int lx_dsp_get_clock_frequency(struct lx6464es *chip, u32 *rfreq); | |
117 | int lx_dsp_set_granularity(struct lx6464es *chip, u32 gran); | |
118 | int lx_dsp_read_async_events(struct lx6464es *chip, u32 *data); | |
119 | int lx_dsp_get_mac(struct lx6464es *chip, u8 *mac_address); | |
120 | ||
121 | ||
122 | /* low-level pipe handling */ | |
123 | int lx_pipe_allocate(struct lx6464es *chip, u32 pipe, int is_capture, | |
124 | int channels); | |
125 | int lx_pipe_release(struct lx6464es *chip, u32 pipe, int is_capture); | |
126 | int lx_pipe_sample_count(struct lx6464es *chip, u32 pipe, int is_capture, | |
127 | u64 *rsample_count); | |
128 | int lx_pipe_state(struct lx6464es *chip, u32 pipe, int is_capture, u16 *rstate); | |
129 | int lx_pipe_stop(struct lx6464es *chip, u32 pipe, int is_capture); | |
130 | int lx_pipe_start(struct lx6464es *chip, u32 pipe, int is_capture); | |
131 | int lx_pipe_pause(struct lx6464es *chip, u32 pipe, int is_capture); | |
132 | ||
133 | int lx_pipe_wait_for_start(struct lx6464es *chip, u32 pipe, int is_capture); | |
134 | int lx_pipe_wait_for_idle(struct lx6464es *chip, u32 pipe, int is_capture); | |
135 | ||
136 | /* low-level stream handling */ | |
137 | int lx_stream_set_format(struct lx6464es *chip, struct snd_pcm_runtime *runtime, | |
138 | u32 pipe, int is_capture); | |
139 | int lx_stream_state(struct lx6464es *chip, u32 pipe, int is_capture, | |
140 | int *rstate); | |
141 | int lx_stream_sample_position(struct lx6464es *chip, u32 pipe, int is_capture, | |
142 | u64 *r_bytepos); | |
143 | ||
144 | int lx_stream_set_state(struct lx6464es *chip, u32 pipe, | |
145 | int is_capture, enum stream_state_t state); | |
146 | ||
147 | static inline int lx_stream_start(struct lx6464es *chip, u32 pipe, | |
148 | int is_capture) | |
149 | { | |
150 | snd_printdd("->lx_stream_start\n"); | |
151 | return lx_stream_set_state(chip, pipe, is_capture, SSTATE_RUN); | |
152 | } | |
153 | ||
154 | static inline int lx_stream_pause(struct lx6464es *chip, u32 pipe, | |
155 | int is_capture) | |
156 | { | |
157 | snd_printdd("->lx_stream_pause\n"); | |
158 | return lx_stream_set_state(chip, pipe, is_capture, SSTATE_PAUSE); | |
159 | } | |
160 | ||
161 | static inline int lx_stream_stop(struct lx6464es *chip, u32 pipe, | |
162 | int is_capture) | |
163 | { | |
164 | snd_printdd("->lx_stream_stop\n"); | |
165 | return lx_stream_set_state(chip, pipe, is_capture, SSTATE_STOP); | |
166 | } | |
167 | ||
168 | /* low-level buffer handling */ | |
169 | int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture, | |
170 | u32 *r_needed, u32 *r_freed, u32 *size_array); | |
171 | int lx_buffer_give(struct lx6464es *chip, u32 pipe, int is_capture, | |
172 | u32 buffer_size, u32 buf_address_lo, u32 buf_address_hi, | |
173 | u32 *r_buffer_index); | |
174 | int lx_buffer_free(struct lx6464es *chip, u32 pipe, int is_capture, | |
175 | u32 *r_buffer_size); | |
176 | int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture, | |
177 | u32 buffer_index); | |
178 | ||
179 | /* low-level gain/peak handling */ | |
180 | int lx_level_unmute(struct lx6464es *chip, int is_capture, int unmute); | |
181 | int lx_level_peaks(struct lx6464es *chip, int is_capture, int channels, | |
182 | u32 *r_levels); | |
183 | ||
184 | ||
185 | /* interrupt handling */ | |
186 | irqreturn_t lx_interrupt(int irq, void *dev_id); | |
187 | void lx_irq_enable(struct lx6464es *chip); | |
188 | void lx_irq_disable(struct lx6464es *chip); | |
189 | ||
190 | void lx_tasklet_capture(unsigned long data); | |
191 | void lx_tasklet_playback(unsigned long data); | |
192 | ||
193 | ||
194 | /* Stream Format Header Defines (for LIN and IEEE754) */ | |
195 | #define HEADER_FMT_BASE HEADER_FMT_BASE_LIN | |
196 | #define HEADER_FMT_BASE_LIN 0xFED00000 | |
197 | #define HEADER_FMT_BASE_FLOAT 0xFAD00000 | |
198 | #define HEADER_FMT_MONO 0x00000080 /* bit 23 in header_lo. WARNING: old | |
199 | * bit 22 is ignored in float | |
200 | * format */ | |
201 | #define HEADER_FMT_INTEL 0x00008000 | |
202 | #define HEADER_FMT_16BITS 0x00002000 | |
203 | #define HEADER_FMT_24BITS 0x00004000 | |
204 | #define HEADER_FMT_UPTO11 0x00000200 /* frequency is less or equ. to 11k. | |
205 | * */ | |
206 | #define HEADER_FMT_UPTO32 0x00000100 /* frequency is over 11k and less | |
207 | * then 32k.*/ | |
208 | ||
209 | ||
210 | #define BIT_FMP_HEADER 23 | |
211 | #define BIT_FMP_SD 22 | |
212 | #define BIT_FMP_MULTICHANNEL 19 | |
213 | ||
214 | #define START_STATE 1 | |
215 | #define PAUSE_STATE 0 | |
216 | ||
217 | ||
218 | ||
219 | ||
220 | ||
221 | /* from PcxAll_e.h */ | |
222 | /* Start/Pause condition for pipes (PCXStartPipe, PCXPausePipe) */ | |
223 | #define START_PAUSE_IMMEDIATE 0 | |
224 | #define START_PAUSE_ON_SYNCHRO 1 | |
225 | #define START_PAUSE_ON_TIME_CODE 2 | |
226 | ||
227 | ||
228 | /* Pipe / Stream state */ | |
229 | #define START_STATE 1 | |
230 | #define PAUSE_STATE 0 | |
231 | ||
232 | static inline void unpack_pointer(dma_addr_t ptr, u32 *r_low, u32 *r_high) | |
233 | { | |
234 | *r_low = (u32)(ptr & 0xffffffff); | |
235 | #if BITS_PER_LONG == 32 | |
236 | *r_high = 0; | |
237 | #else | |
238 | *r_high = (u32)((u64)ptr>>32); | |
239 | #endif | |
240 | } | |
241 | ||
242 | #endif /* LX_CORE_H */ |