02bec49045
prototype of a driver for the digigram lx6464es 64 channel ethersound interface. Signed-off-by: Tim Blechmann <tim@klingt.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
243 lines
6.7 KiB
C
243 lines
6.7 KiB
C
/* -*- linux-c -*- *
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*
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* ALSA driver for the digigram lx6464es interface
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* low-level interface
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*
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* Copyright (c) 2009 Tim Blechmann <tim@klingt.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef LX_CORE_H
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#define LX_CORE_H
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#include <linux/interrupt.h>
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#include "lx_defs.h"
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#define REG_CRM_NUMBER 12
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struct lx6464es;
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/* low-level register access */
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/* dsp register access */
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enum {
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eReg_BASE,
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eReg_CSM,
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eReg_CRM1,
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eReg_CRM2,
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eReg_CRM3,
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eReg_CRM4,
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eReg_CRM5,
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eReg_CRM6,
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eReg_CRM7,
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eReg_CRM8,
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eReg_CRM9,
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eReg_CRM10,
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eReg_CRM11,
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eReg_CRM12,
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eReg_ICR,
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eReg_CVR,
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eReg_ISR,
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eReg_RXHTXH,
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eReg_RXMTXM,
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eReg_RHLTXL,
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eReg_RESETDSP,
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eReg_CSUF,
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eReg_CSES,
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eReg_CRESMSB,
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eReg_CRESLSB,
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eReg_ADMACESMSB,
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eReg_ADMACESLSB,
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eReg_CONFES,
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eMaxPortLx
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};
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unsigned long lx_dsp_reg_read(struct lx6464es *chip, int port);
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void lx_dsp_reg_readbuf(struct lx6464es *chip, int port, u32 *data, u32 len);
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void lx_dsp_reg_write(struct lx6464es *chip, int port, unsigned data);
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void lx_dsp_reg_writebuf(struct lx6464es *chip, int port, const u32 *data,
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u32 len);
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/* plx register access */
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enum {
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ePLX_PCICR,
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ePLX_MBOX0,
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ePLX_MBOX1,
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ePLX_MBOX2,
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ePLX_MBOX3,
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ePLX_MBOX4,
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ePLX_MBOX5,
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ePLX_MBOX6,
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ePLX_MBOX7,
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ePLX_L2PCIDB,
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ePLX_IRQCS,
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ePLX_CHIPSC,
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eMaxPort
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};
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unsigned long lx_plx_reg_read(struct lx6464es *chip, int port);
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void lx_plx_reg_write(struct lx6464es *chip, int port, u32 data);
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/* rhm */
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struct lx_rmh {
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u16 cmd_len; /* length of the command to send (WORDs) */
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u16 stat_len; /* length of the status received (WORDs) */
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u16 dsp_stat; /* status type, RMP_SSIZE_XXX */
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u16 cmd_idx; /* index of the command */
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u32 cmd[REG_CRM_NUMBER];
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u32 stat[REG_CRM_NUMBER];
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};
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/* low-level dsp access */
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int __devinit lx_dsp_get_version(struct lx6464es *chip, u32 *rdsp_version);
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int lx_dsp_get_clock_frequency(struct lx6464es *chip, u32 *rfreq);
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int lx_dsp_set_granularity(struct lx6464es *chip, u32 gran);
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int lx_dsp_read_async_events(struct lx6464es *chip, u32 *data);
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int lx_dsp_get_mac(struct lx6464es *chip, u8 *mac_address);
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/* low-level pipe handling */
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int lx_pipe_allocate(struct lx6464es *chip, u32 pipe, int is_capture,
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int channels);
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int lx_pipe_release(struct lx6464es *chip, u32 pipe, int is_capture);
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int lx_pipe_sample_count(struct lx6464es *chip, u32 pipe, int is_capture,
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u64 *rsample_count);
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int lx_pipe_state(struct lx6464es *chip, u32 pipe, int is_capture, u16 *rstate);
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int lx_pipe_stop(struct lx6464es *chip, u32 pipe, int is_capture);
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int lx_pipe_start(struct lx6464es *chip, u32 pipe, int is_capture);
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int lx_pipe_pause(struct lx6464es *chip, u32 pipe, int is_capture);
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int lx_pipe_wait_for_start(struct lx6464es *chip, u32 pipe, int is_capture);
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int lx_pipe_wait_for_idle(struct lx6464es *chip, u32 pipe, int is_capture);
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/* low-level stream handling */
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int lx_stream_set_format(struct lx6464es *chip, struct snd_pcm_runtime *runtime,
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u32 pipe, int is_capture);
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int lx_stream_state(struct lx6464es *chip, u32 pipe, int is_capture,
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int *rstate);
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int lx_stream_sample_position(struct lx6464es *chip, u32 pipe, int is_capture,
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u64 *r_bytepos);
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int lx_stream_set_state(struct lx6464es *chip, u32 pipe,
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int is_capture, enum stream_state_t state);
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static inline int lx_stream_start(struct lx6464es *chip, u32 pipe,
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int is_capture)
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{
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snd_printdd("->lx_stream_start\n");
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return lx_stream_set_state(chip, pipe, is_capture, SSTATE_RUN);
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}
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static inline int lx_stream_pause(struct lx6464es *chip, u32 pipe,
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int is_capture)
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{
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snd_printdd("->lx_stream_pause\n");
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return lx_stream_set_state(chip, pipe, is_capture, SSTATE_PAUSE);
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}
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static inline int lx_stream_stop(struct lx6464es *chip, u32 pipe,
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int is_capture)
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{
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snd_printdd("->lx_stream_stop\n");
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return lx_stream_set_state(chip, pipe, is_capture, SSTATE_STOP);
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}
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/* low-level buffer handling */
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int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture,
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u32 *r_needed, u32 *r_freed, u32 *size_array);
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int lx_buffer_give(struct lx6464es *chip, u32 pipe, int is_capture,
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u32 buffer_size, u32 buf_address_lo, u32 buf_address_hi,
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u32 *r_buffer_index);
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int lx_buffer_free(struct lx6464es *chip, u32 pipe, int is_capture,
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u32 *r_buffer_size);
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int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture,
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u32 buffer_index);
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/* low-level gain/peak handling */
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int lx_level_unmute(struct lx6464es *chip, int is_capture, int unmute);
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int lx_level_peaks(struct lx6464es *chip, int is_capture, int channels,
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u32 *r_levels);
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/* interrupt handling */
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irqreturn_t lx_interrupt(int irq, void *dev_id);
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void lx_irq_enable(struct lx6464es *chip);
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void lx_irq_disable(struct lx6464es *chip);
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void lx_tasklet_capture(unsigned long data);
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void lx_tasklet_playback(unsigned long data);
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/* Stream Format Header Defines (for LIN and IEEE754) */
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#define HEADER_FMT_BASE HEADER_FMT_BASE_LIN
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#define HEADER_FMT_BASE_LIN 0xFED00000
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#define HEADER_FMT_BASE_FLOAT 0xFAD00000
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#define HEADER_FMT_MONO 0x00000080 /* bit 23 in header_lo. WARNING: old
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* bit 22 is ignored in float
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* format */
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#define HEADER_FMT_INTEL 0x00008000
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#define HEADER_FMT_16BITS 0x00002000
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#define HEADER_FMT_24BITS 0x00004000
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#define HEADER_FMT_UPTO11 0x00000200 /* frequency is less or equ. to 11k.
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* */
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#define HEADER_FMT_UPTO32 0x00000100 /* frequency is over 11k and less
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* then 32k.*/
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#define BIT_FMP_HEADER 23
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#define BIT_FMP_SD 22
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#define BIT_FMP_MULTICHANNEL 19
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#define START_STATE 1
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#define PAUSE_STATE 0
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/* from PcxAll_e.h */
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/* Start/Pause condition for pipes (PCXStartPipe, PCXPausePipe) */
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#define START_PAUSE_IMMEDIATE 0
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#define START_PAUSE_ON_SYNCHRO 1
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#define START_PAUSE_ON_TIME_CODE 2
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/* Pipe / Stream state */
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#define START_STATE 1
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#define PAUSE_STATE 0
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static inline void unpack_pointer(dma_addr_t ptr, u32 *r_low, u32 *r_high)
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{
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*r_low = (u32)(ptr & 0xffffffff);
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#if BITS_PER_LONG == 32
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*r_high = 0;
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#else
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*r_high = (u32)((u64)ptr>>32);
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#endif
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}
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#endif /* LX_CORE_H */
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