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Diffstat (limited to 'sound/pci/echoaudio/mia_dsp.c')
-rw-r--r--sound/pci/echoaudio/mia_dsp.c229
1 files changed, 229 insertions, 0 deletions
diff --git a/sound/pci/echoaudio/mia_dsp.c b/sound/pci/echoaudio/mia_dsp.c
new file mode 100644
index 00000000000..891c7051909
--- /dev/null
+++ b/sound/pci/echoaudio/mia_dsp.c
@@ -0,0 +1,229 @@
+/****************************************************************************
+
+ 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_input_clock(struct echoaudio *chip, u16 clock);
+static int set_professional_spdif(struct echoaudio *chip, char prof);
+static int update_flags(struct echoaudio *chip);
+static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
+ int gain);
+static int update_vmixer_level(struct echoaudio *chip);
+
+
+static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
+{
+ int err;
+
+ DE_INIT(("init_hw() - Mia\n"));
+ snd_assert((subdevice_id & 0xfff0) == MIA, 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_MIA_DSP];
+ /* Since this card has no ASIC, mark it as loaded so everything
+ works OK */
+ chip->asic_loaded = TRUE;
+ if ((subdevice_id & 0x0000f) == MIA_MIDI_REV)
+ chip->has_midi = 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)))
+ return err;
+
+ /* Default routing of the virtual channels: vchannels 0-3 go to analog
+ outputs and vchannels 4-7 go to S/PDIF outputs */
+ set_vmixer_gain(chip, 0, 0, 0);
+ set_vmixer_gain(chip, 1, 1, 0);
+ set_vmixer_gain(chip, 0, 2, 0);
+ set_vmixer_gain(chip, 1, 3, 0);
+ set_vmixer_gain(chip, 2, 4, 0);
+ set_vmixer_gain(chip, 3, 5, 0);
+ set_vmixer_gain(chip, 2, 6, 0);
+ set_vmixer_gain(chip, 3, 7, 0);
+ err = update_vmixer_level(chip);
+
+ 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 Mia 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)
+{
+ u32 control_reg;
+
+ switch (rate) {
+ case 96000:
+ control_reg = MIA_96000;
+ break;
+ case 88200:
+ control_reg = MIA_88200;
+ break;
+ case 48000:
+ control_reg = MIA_48000;
+ break;
+ case 44100:
+ control_reg = MIA_44100;
+ break;
+ case 32000:
+ control_reg = MIA_32000;
+ break;
+ default:
+ DE_ACT(("set_sample_rate: %d invalid!\n", rate));
+ return -EINVAL;
+ }
+
+ /* Override the clock setting if this Mia is set to S/PDIF clock */
+ if (chip->input_clock == ECHO_CLOCK_SPDIF)
+ control_reg |= MIA_SPDIF;
+
+ /* Set the control register if it has changed */
+ if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
+ if (wait_handshake(chip))
+ return -EIO;
+
+ chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
+ chip->comm_page->control_register = cpu_to_le32(control_reg);
+ chip->sample_rate = rate;
+
+ clear_handshake(chip);
+ return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
+ }
+ return 0;
+}
+
+
+
+static int set_input_clock(struct echoaudio *chip, u16 clock)
+{
+ DE_ACT(("set_input_clock(%d)\n", clock));
+ snd_assert(clock == ECHO_CLOCK_INTERNAL || clock == ECHO_CLOCK_SPDIF,
+ return -EINVAL);
+
+ chip->input_clock = clock;
+ return set_sample_rate(chip, chip->sample_rate);
+}
+
+
+
+/* This function routes the sound from a virtual channel to a real output */
+static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
+ int gain)
+{
+ int index;
+
+ snd_assert(pipe < num_pipes_out(chip) &&
+ output < num_busses_out(chip), return -EINVAL);
+
+ if (wait_handshake(chip))
+ return -EIO;
+
+ chip->vmixer_gain[output][pipe] = gain;
+ index = output * num_pipes_out(chip) + pipe;
+ chip->comm_page->vmixer[index] = gain;
+
+ DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
+ return 0;
+}
+
+
+
+/* Tell the DSP to read and update virtual mixer levels in comm page. */
+static int update_vmixer_level(struct echoaudio *chip)
+{
+ if (wait_handshake(chip))
+ return -EIO;
+ clear_handshake(chip);
+ return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
+}
+
+
+
+/* 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);
+}
+
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