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 000000000000..891c70519096
--- /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);
+}
+