Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / pci / echoaudio / indigo_express_dsp.c

diff --git a/kernel/sound/pci/echoaudio/indigo_express_dsp.c b/kernel/sound/pci/echoaudio/indigo_express_dsp.c
new file mode 100644 (file)
index 0000000..ceda2d7
--- /dev/null
+++ b/kernel/sound/pci/echoaudio/indigo_express_dsp.c
@@ -0,0 +1,122 @@
+/************************************************************************
+
+This file is part of Echo Digital Audio's generic driver library.
+Copyright Echo Digital Audio Corporation (c) 1998 - 2005
+All rights reserved
+www.echoaudio.com
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library 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
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; 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_sample_rate(struct echoaudio *chip, u32 rate)
+{
+       u32 clock, control_reg, old_control_reg;
+
+       if (wait_handshake(chip))
+               return -EIO;
+
+       old_control_reg = le32_to_cpu(chip->comm_page->control_register);
+       control_reg = old_control_reg & ~INDIGO_EXPRESS_CLOCK_MASK;
+
+       switch (rate) {
+       case 32000:
+               clock = INDIGO_EXPRESS_32000;
+               break;
+       case 44100:
+               clock = INDIGO_EXPRESS_44100;
+               break;
+       case 48000:
+               clock = INDIGO_EXPRESS_48000;
+               break;
+       case 64000:
+               clock = INDIGO_EXPRESS_32000|INDIGO_EXPRESS_DOUBLE_SPEED;
+               break;
+       case 88200:
+               clock = INDIGO_EXPRESS_44100|INDIGO_EXPRESS_DOUBLE_SPEED;
+               break;
+       case 96000:
+               clock = INDIGO_EXPRESS_48000|INDIGO_EXPRESS_DOUBLE_SPEED;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       control_reg |= clock;
+       if (control_reg != old_control_reg) {
+               dev_dbg(chip->card->dev,
+                       "set_sample_rate: %d clock %d\n", rate, clock);
+               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;
+}
+
+
+
+/* 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;
+
+       if (snd_BUG_ON(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;
+
+       dev_dbg(chip->card->dev,
+               "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);
+}
+
+
+
+static u32 detect_input_clocks(const struct echoaudio *chip)
+{
+       return ECHO_CLOCK_BIT_INTERNAL;
+}
+
+
+
+/* The IndigoIO has no ASIC. Just do nothing */
+static int load_asic(struct echoaudio *chip)
+{
+       return 0;
+}