/* load_firmware takes care of loading the DSP and any ASIC code. */
static int load_firmware(struct echoaudio *chip)
{
const struct firmware *fw;
int box_type, err;
if (snd_BUG_ON(!chip->dsp_code_to_load || !chip->comm_page))
return -EPERM;
/* See if the ASIC is present and working - only if the DSP is already loaded */
if (chip->dsp_code) {
if ((box_type = check_asic_status(chip)) >= 0)
return box_type;
/* ASIC check failed; force the DSP to reload */
chip->dsp_code = NULL;
}
if ((err = get_firmware(&fw, chip->dsp_code_to_load, chip)) < 0)
return err;
err = load_dsp(chip, (u16 *)fw->data);
free_firmware(fw);
if (err < 0)
return err;
if ((box_type = load_asic(chip)) < 0)
return box_type; /* error */
if ((err = restore_dsp_rettings(chip)) < 0)
return err;
return box_type;
}
/* This function initializes the chip structure with default values, ie. all
* muted and internal clock source. Then it copies the settings to the DSP.
* This MUST be called after the DSP is up and running !
*/
static int init_line_levels(struct echoaudio *chip)
{
memset(chip->output_gain, ECHOGAIN_MUTED, sizeof(chip->output_gain));
memset(chip->input_gain, ECHOGAIN_MUTED, sizeof(chip->input_gain));
memset(chip->monitor_gain, ECHOGAIN_MUTED, sizeof(chip->monitor_gain));
memset(chip->vmixer_gain, ECHOGAIN_MUTED, sizeof(chip->vmixer_gain));
chip->input_clock = ECHO_CLOCK_INTERNAL;
chip->output_clock = ECHO_CLOCK_WORD;
chip->sample_rate = 44100;
return restore_dsp_rettings(chip);
}