--- /dev/null
+/****************************************************************************
+
+ 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"));
+ snd_assert((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)
+{
+ snd_assert(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);
+}
git://git.onelab.eu / linux-2.6.git / blobdiff