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