Release 4.7 sound/pci/echoaudio/echoaudio_3g.c

/****************************************************************************

   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
   All rights reserved
   www.echoaudio.com

   This file is part of Echo Digital Audio's generic driver library.

   Echo Digital Audio's generic driver library 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.

   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; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
   MA  02111-1307, USA.

   *************************************************************************

 Translation from C++ and adaptation for use in ALSA-Driver
 were made by Giuliano Pochini <pochini@shiny.it>

****************************************************************************/



/* These functions are common for all "3G" cards */




static int check_asic_status(struct echoaudio *chip)
{
	u32 box_status;

	if (wait_handshake(chip))
		return -EIO;

	chip->comm_page->ext_box_status = cpu_to_le32(E3G_ASIC_NOT_LOADED);
	chip->asic_loaded = false;
	clear_handshake(chip);
	send_vector(chip, DSP_VC_TEST_ASIC);

	if (wait_handshake(chip)) {
		chip->dsp_code = NULL;
		return -EIO;
	}

	box_status = le32_to_cpu(chip->comm_page->ext_box_status);
	dev_dbg(chip->card->dev, "box_status=%x\n", box_status);
	if (box_status == E3G_ASIC_NOT_LOADED)
		return -ENODEV;

	chip->asic_loaded = true;
	return box_status & E3G_BOX_TYPE_MASK;
}



Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
107
90.68%
1
25.00%
sudip mukherjee
sudip mukherjee
8
6.78%
1
25.00%
mark brown
mark brown
2
1.69%
1
25.00%
harvey harrison
harvey harrison
1
0.85%
1
25.00%
Total
118
100.00%
4
100.00%



static inline u32 get_frq_reg(struct echoaudio *chip)
{
	return le32_to_cpu(chip->comm_page->e3g_frq_register);
}



Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
22
100.00%
1
100.00%
Total
22
100.00%
1
100.00%

/* Most configuration of 3G cards is accomplished by writing the control
register. write_control_reg sends the new control register value to the DSP. */


static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
			     char force)
{
	if (wait_handshake(chip))
		return -EIO;

	dev_dbg(chip->card->dev,
		"WriteControlReg: Setting 0x%x, 0x%x\n", ctl, frq);

	ctl = cpu_to_le32(ctl);
	frq = cpu_to_le32(frq);

	if (ctl != chip->comm_page->control_register ||
	    frq != chip->comm_page->e3g_frq_register || force) {
		chip->comm_page->e3g_frq_register = frq;
		chip->comm_page->control_register = ctl;
		clear_handshake(chip);
		return send_vector(chip, DSP_VC_WRITE_CONTROL_REG);
	}

	dev_dbg(chip->card->dev, "WriteControlReg: not written, no change\n");
	return 0;
}



Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
109
87.20%
1
50.00%
sudip mukherjee
sudip mukherjee
16
12.80%
1
50.00%
Total
125
100.00%
2
100.00%

/* Set the digital mode - currently for Gina24, Layla24, Mona, 3G */


static int set_digital_mode(struct echoaudio *chip, u8 mode)
{
	u8 previous_mode;
	int err, i, o;

	/* All audio channels must be closed before changing the digital mode */
	if (snd_BUG_ON(chip->pipe_alloc_mask))
		return -EAGAIN;

	if (snd_BUG_ON(!(chip->digital_modes & (1 << mode))))
		return -EINVAL;

	previous_mode = chip->digital_mode;
	err = dsp_set_digital_mode(chip, mode);

	/* If we successfully changed the digital mode from or to ADAT,
         * then make sure all output, input and monitor levels are
         * updated by the DSP comm object. */
	if (err >= 0 && previous_mode != mode &&
	    (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) {
		spin_lock_irq(&chip->lock);
		for (o = 0; o < num_busses_out(chip); o++)
			for (i = 0; i < num_busses_in(chip); i++)
				set_monitor_gain(chip, o, i,
						 chip->monitor_gain[o][i]);

#ifdef ECHOCARD_HAS_INPUT_GAIN
		for (i = 0; i < num_busses_in(chip); i++)
			set_input_gain(chip, i, chip->input_gain[i]);
		update_input_line_level(chip);
#endif

		for (o = 0; o < num_busses_out(chip); o++)
			set_output_gain(chip, o, chip->output_gain[o]);
		update_output_line_level(chip);
		spin_unlock_irq(&chip->lock);
	}

	return err;
}



Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
213
87.65%
1
50.00%
takashi iwai
takashi iwai
30
12.35%
1
50.00%
Total
243
100.00%
2
100.00%



static u32 set_spdif_bits(struct echoaudio *chip, u32 control_reg, u32 rate)
{
	control_reg &= E3G_SPDIF_FORMAT_CLEAR_MASK;

	switch (rate) {
	case 32000 :
		control_reg |= E3G_SPDIF_SAMPLE_RATE0 | E3G_SPDIF_SAMPLE_RATE1;
		break;
	case 44100 :
		if (chip->professional_spdif)
			control_reg |= E3G_SPDIF_SAMPLE_RATE0;
		break;
	case 48000 :
		control_reg |= E3G_SPDIF_SAMPLE_RATE1;
		break;
	}

	if (chip->professional_spdif)
		control_reg |= E3G_SPDIF_PRO_MODE;

	if (chip->non_audio_spdif)
		control_reg |= E3G_SPDIF_NOT_AUDIO;

	control_reg |= E3G_SPDIF_24_BIT | E3G_SPDIF_TWO_CHANNEL |
		E3G_SPDIF_COPY_PERMIT;

	return control_reg;
}



Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
90
100.00%
1
100.00%
Total
90
100.00%
1
100.00%

/* Set the S/PDIF output format */


static int set_professional_spdif(struct echoaudio *chip, char prof)
{
	u32 control_reg;

	control_reg = le32_to_cpu(chip->comm_page->control_register);
	chip->professional_spdif = prof;
	control_reg = set_spdif_bits(chip, control_reg, chip->sample_rate);
	return write_control_reg(chip, control_reg, get_frq_reg(chip), 0);
}



Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
62
100.00%
1
100.00%
Total
62
100.00%
1
100.00%

/* detect_input_clocks() returns a bitmask consisting of all the input clocks
currently connected to the hardware; this changes as the user connects and
disconnects clock inputs. You should use this information to determine which
clocks the user is allowed to select. */


static u32 detect_input_clocks(const struct echoaudio *chip)
{
	u32 clocks_from_dsp, clock_bits;

	/* Map the DSP clock detect bits to the generic driver clock
         * detect bits */
	clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);

	clock_bits = ECHO_CLOCK_BIT_INTERNAL;

	if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD)
		clock_bits |= ECHO_CLOCK_BIT_WORD;

	switch(chip->digital_mode) {
	case DIGITAL_MODE_SPDIF_RCA:
	case DIGITAL_MODE_SPDIF_OPTICAL:
		if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF)
			clock_bits |= ECHO_CLOCK_BIT_SPDIF;
		break;
	case DIGITAL_MODE_ADAT:
		if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_ADAT)
			clock_bits |= ECHO_CLOCK_BIT_ADAT;
		break;
	}

	return clock_bits;
}



Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
85
100.00%
1
100.00%
Total
85
100.00%
1
100.00%



static int load_asic(struct echoaudio *chip)
{
	int box_type, err;

	if (chip->asic_loaded)
		return 0;

	/* Give the DSP a few milliseconds to settle down */
	mdelay(2);

	err = load_asic_generic(chip, DSP_FNC_LOAD_3G_ASIC, FW_3G_ASIC);
	if (err < 0)
		return err;

	chip->asic_code = FW_3G_ASIC;

	/* Now give the new ASIC some time to set up */
	msleep(1000);
	/* See if it worked */
	box_type = check_asic_status(chip);

	/* Set up the control register if the load succeeded -
         * 48 kHz, internal clock, S/PDIF RCA mode */
	if (box_type >= 0) {
		err = write_control_reg(chip, E3G_48KHZ,
					E3G_FREQ_REG_DEFAULT, true);
		if (err < 0)
			return err;
	}

	return box_type;
}



Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
104
99.05%
2
66.67%
mark brown
mark brown
1
0.95%
1
33.33%
Total
105
100.00%
3
100.00%



static int set_sample_rate(struct echoaudio *chip, u32 rate)
{
	u32 control_reg, clock, base_rate, frq_reg;

	/* Only set the clock for internal mode. */
	if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
		dev_warn(chip->card->dev,
			 "Cannot set sample rate - clock not set to CLK_CLOCKININTERNAL\n");
		/* Save the rate anyhow */
		chip->comm_page->sample_rate = cpu_to_le32(rate);
		chip->sample_rate = rate;
		set_input_clock(chip, chip->input_clock);
		return 0;
	}

	if (snd_BUG_ON(rate >= 50000 &&
		       chip->digital_mode == DIGITAL_MODE_ADAT))
		return -EINVAL;

	clock = 0;
	control_reg = le32_to_cpu(chip->comm_page->control_register);
	control_reg &= E3G_CLOCK_CLEAR_MASK;

	switch (rate) {
	case 96000:
		clock = E3G_96KHZ;
		break;
	case 88200:
		clock = E3G_88KHZ;
		break;
	case 48000:
		clock = E3G_48KHZ;
		break;
	case 44100:
		clock = E3G_44KHZ;
		break;
	case 32000:
		clock = E3G_32KHZ;
		break;
	default:
		clock = E3G_CONTINUOUS_CLOCK;
		if (rate > 50000)
			clock |= E3G_DOUBLE_SPEED_MODE;
		break;
	}

	control_reg |= clock;
	control_reg = set_spdif_bits(chip, control_reg, rate);

	base_rate = rate;
	if (base_rate > 50000)
		base_rate /= 2;
	if (base_rate < 32000)
		base_rate = 32000;

	frq_reg = E3G_MAGIC_NUMBER / base_rate - 2;
	if (frq_reg > E3G_FREQ_REG_MAX)
		frq_reg = E3G_FREQ_REG_MAX;

	chip->comm_page->sample_rate = cpu_to_le32(rate);	/* ignored by the DSP */
	chip->sample_rate = rate;
	dev_dbg(chip->card->dev,
		"SetSampleRate: %d clock %x\n", rate, control_reg);

	/* Tell the DSP about it - DSP reads both control reg & freq reg */
	return write_control_reg(chip, control_reg, frq_reg, 0);
}



Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
245
88.13%
1
33.33%
sudip mukherjee
sudip mukherjee
17
6.12%
1
33.33%
takashi iwai
takashi iwai
16
5.76%
1
33.33%
Total
278
100.00%
3
100.00%

/* Set the sample clock source to internal, S/PDIF, ADAT */


static int set_input_clock(struct echoaudio *chip, u16 clock)
{
	u32 control_reg, clocks_from_dsp;


	/* Mask off the clock select bits */
	control_reg = le32_to_cpu(chip->comm_page->control_register) &
		E3G_CLOCK_CLEAR_MASK;
	clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);

	switch (clock) {
	case ECHO_CLOCK_INTERNAL:
		chip->input_clock = ECHO_CLOCK_INTERNAL;
		return set_sample_rate(chip, chip->sample_rate);
	case ECHO_CLOCK_SPDIF:
		if (chip->digital_mode == DIGITAL_MODE_ADAT)
			return -EAGAIN;
		control_reg |= E3G_SPDIF_CLOCK;
		if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF96)
			control_reg |= E3G_DOUBLE_SPEED_MODE;
		else
			control_reg &= ~E3G_DOUBLE_SPEED_MODE;
		break;
	case ECHO_CLOCK_ADAT:
		if (chip->digital_mode != DIGITAL_MODE_ADAT)
			return -EAGAIN;
		control_reg |= E3G_ADAT_CLOCK;
		control_reg &= ~E3G_DOUBLE_SPEED_MODE;
		break;
	case ECHO_CLOCK_WORD:
		control_reg |= E3G_WORD_CLOCK;
		if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD96)
			control_reg |= E3G_DOUBLE_SPEED_MODE;
		else
			control_reg &= ~E3G_DOUBLE_SPEED_MODE;
		break;
	default:
		dev_err(chip->card->dev,
			"Input clock 0x%x not supported for Echo3G\n", clock);
		return -EINVAL;
	}

	chip->input_clock = clock;
	return write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
}



Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
185
95.85%
1
50.00%
sudip mukherjee
sudip mukherjee
8
4.15%
1
50.00%
Total
193
100.00%
2
100.00%



static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode)
{
	u32 control_reg;
	int err, incompatible_clock;

	/* Set clock to "internal" if it's not compatible with the new mode */
	incompatible_clock = false;
	switch (mode) {
	case DIGITAL_MODE_SPDIF_OPTICAL:
	case DIGITAL_MODE_SPDIF_RCA:
		if (chip->input_clock == ECHO_CLOCK_ADAT)
			incompatible_clock = true;
		break;
	case DIGITAL_MODE_ADAT:
		if (chip->input_clock == ECHO_CLOCK_SPDIF)
			incompatible_clock = true;
		break;
	default:
		dev_err(chip->card->dev,
			"Digital mode not supported: %d\n", mode);
		return -EINVAL;
	}

	spin_lock_irq(&chip->lock);

	if (incompatible_clock) {
		chip->sample_rate = 48000;
		set_input_clock(chip, ECHO_CLOCK_INTERNAL);
	}

	/* Clear the current digital mode */
	control_reg = le32_to_cpu(chip->comm_page->control_register);
	control_reg &= E3G_DIGITAL_MODE_CLEAR_MASK;

	/* Tweak the control reg */
	switch (mode) {
	case DIGITAL_MODE_SPDIF_OPTICAL:
		control_reg |= E3G_SPDIF_OPTICAL_MODE;
		break;
	case DIGITAL_MODE_SPDIF_RCA:
		/* E3G_SPDIF_OPTICAL_MODE bit cleared */
		break;
	case DIGITAL_MODE_ADAT:
		control_reg |= E3G_ADAT_MODE;
		control_reg &= ~E3G_DOUBLE_SPEED_MODE;	/* @@ useless */
		break;
	}

	err = write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
	spin_unlock_irq(&chip->lock);
	if (err < 0)
		return err;
	chip->digital_mode = mode;

	dev_dbg(chip->card->dev, "set_digital_mode(%d)\n", chip->digital_mode);
	return incompatible_clock;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
201
91.36%
1
33.33%
sudip mukherjee
sudip mukherjee
16
7.27%
1
33.33%
mark brown
mark brown
3
1.36%
1
33.33%
Total
220
100.00%
3
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
giuliano pochini
giuliano pochini
1430
92.38%
2
33.33%
sudip mukherjee
sudip mukherjee
65
4.20%
1
16.67%
takashi iwai
takashi iwai
46
2.97%
1
16.67%
mark brown
mark brown
6
0.39%
1
16.67%
harvey harrison
harvey harrison
1
0.06%
1
16.67%
Total
1548
100.00%
6
100.00%
  
Directory: sound/pci/echoaudio

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.