Initial import of modified Linux 2.6.28 tree

Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y

1 files changed, 217 insertions, 0 deletions

diff --git a/sound/pci/echoaudio/gina20_dsp.c b/sound/pci/echoaudio/gina20_dsp.c
new file mode 100644
index 0000000..db6c952
--- /dev/null
+++ b/sound/pci/echoaudio/gina20_dsp.c
@@ -0,0 +1,217 @@
+/****************************************************************************
+
+   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>
+
+****************************************************************************/
+
+
+static int set_professional_spdif(struct echoaudio *chip, char prof);
+static int update_flags(struct echoaudio *chip);
+
+
+static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
+{
+	int err;
+
+	DE_INIT(("init_hw() - Gina20\n"));
+	if (snd_BUG_ON((subdevice_id & 0xfff0) != GINA20))
+		return -ENODEV;
+
+	if ((err = init_dsp_comm_page(chip))) {
+		DE_INIT(("init_hw - could not initialize DSP comm page\n"));
+		return err;
+	}
+
+	chip->device_id = device_id;
+	chip->subdevice_id = subdevice_id;
+	chip->bad_board = TRUE;
+	chip->dsp_code_to_load = &card_fw[FW_GINA20_DSP];
+	chip->spdif_status = GD_SPDIF_STATUS_UNDEF;
+	chip->clock_state = GD_CLOCK_UNDEF;
+	/* Since this card has no ASIC, mark it as loaded so everything
+	   works OK */
+	chip->asic_loaded = TRUE;
+	chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
+		ECHO_CLOCK_BIT_SPDIF;
+
+	if ((err = load_firmware(chip)) < 0)
+		return err;
+	chip->bad_board = FALSE;
+
+	if ((err = init_line_levels(chip)) < 0)
+		return err;
+
+	err = set_professional_spdif(chip, TRUE);
+
+	DE_INIT(("init_hw done\n"));
+	return err;
+}
+
+
+
+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 & GLDM_CLOCK_DETECT_BIT_SPDIF)
+		clock_bits |= ECHO_CLOCK_BIT_SPDIF;
+
+	return clock_bits;
+}
+
+
+
+/* The Gina20 has no ASIC. Just do nothing */
+static int load_asic(struct echoaudio *chip)
+{
+	return 0;
+}
+
+
+
+static int set_sample_rate(struct echoaudio *chip, u32 rate)
+{
+	u8 clock_state, spdif_status;
+
+	if (wait_handshake(chip))
+		return -EIO;
+
+	switch (rate) {
+	case 44100:
+		clock_state = GD_CLOCK_44;
+		spdif_status = GD_SPDIF_STATUS_44;
+		break;
+	case 48000:
+		clock_state = GD_CLOCK_48;
+		spdif_status = GD_SPDIF_STATUS_48;
+		break;
+	default:
+		clock_state = GD_CLOCK_NOCHANGE;
+		spdif_status = GD_SPDIF_STATUS_NOCHANGE;
+		break;
+	}
+
+	if (chip->clock_state == clock_state)
+		clock_state = GD_CLOCK_NOCHANGE;
+	if (spdif_status == chip->spdif_status)
+		spdif_status = GD_SPDIF_STATUS_NOCHANGE;
+
+	chip->comm_page->sample_rate = cpu_to_le32(rate);
+	chip->comm_page->gd_clock_state = clock_state;
+	chip->comm_page->gd_spdif_status = spdif_status;
+	chip->comm_page->gd_resampler_state = 3;	/* magic number - should always be 3 */
+
+	/* Save the new audio state if it changed */
+	if (clock_state != GD_CLOCK_NOCHANGE)
+		chip->clock_state = clock_state;
+	if (spdif_status != GD_SPDIF_STATUS_NOCHANGE)
+		chip->spdif_status = spdif_status;
+	chip->sample_rate = rate;
+
+	clear_handshake(chip);
+	return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
+}
+
+
+
+static int set_input_clock(struct echoaudio *chip, u16 clock)
+{
+	DE_ACT(("set_input_clock:\n"));
+
+	switch (clock) {
+	case ECHO_CLOCK_INTERNAL:
+		/* Reset the audio state to unknown (just in case) */
+		chip->clock_state = GD_CLOCK_UNDEF;
+		chip->spdif_status = GD_SPDIF_STATUS_UNDEF;
+		set_sample_rate(chip, chip->sample_rate);
+		chip->input_clock = clock;
+		DE_ACT(("Set Gina clock to INTERNAL\n"));
+		break;
+	case ECHO_CLOCK_SPDIF:
+		chip->comm_page->gd_clock_state = GD_CLOCK_SPDIFIN;
+		chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_NOCHANGE;
+		clear_handshake(chip);
+		send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
+		chip->clock_state = GD_CLOCK_SPDIFIN;
+		DE_ACT(("Set Gina20 clock to SPDIF\n"));
+		chip->input_clock = clock;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+
+
+/* Set input bus gain (one unit is 0.5dB !) */
+static int set_input_gain(struct echoaudio *chip, u16 input, int gain)
+{
+	if (snd_BUG_ON(input >= num_busses_in(chip)))
+		return -EINVAL;
+
+	if (wait_handshake(chip))
+		return -EIO;
+
+	chip->input_gain[input] = gain;
+	gain += GL20_INPUT_GAIN_MAGIC_NUMBER;
+	chip->comm_page->line_in_level[input] = gain;
+	return 0;
+}
+
+
+
+/* Tell the DSP to reread the flags from the comm page */
+static int update_flags(struct echoaudio *chip)
+{
+	if (wait_handshake(chip))
+		return -EIO;
+	clear_handshake(chip);
+	return send_vector(chip, DSP_VC_UPDATE_FLAGS);
+}
+
+
+
+static int set_professional_spdif(struct echoaudio *chip, char prof)
+{
+	DE_ACT(("set_professional_spdif %d\n", prof));
+	if (prof)
+		chip->comm_page->flags |=
+			__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
+	else
+		chip->comm_page->flags &=
+			~__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
+	chip->professional_spdif = prof;
+	return update_flags(chip);
+}