--- /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 read_dsp(struct echoaudio *chip, u32 *data);
+static int set_professional_spdif(struct echoaudio *chip, char prof);
+static int load_asic_generic(struct echoaudio *chip, u32 cmd,
+ const struct firmware *asic);
+static int check_asic_status(struct echoaudio *chip);
+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() - Layla20\n"));
+ snd_assert((subdevice_id & 0xfff0) == LAYLA20, 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->has_midi = TRUE;
+ chip->dsp_code_to_load = &card_fw[FW_LAYLA20_DSP];
+ chip->input_clock_types =
+ ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF |
+ ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;
+ chip->output_clock_types =
+ ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;
+
+ 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;
+
+ if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_WORD) {
+ if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SUPER)
+ clock_bits |= ECHO_CLOCK_BIT_SUPER;
+ else
+ clock_bits |= ECHO_CLOCK_BIT_WORD;
+ }
+
+ return clock_bits;
+}
+
+
+
+/* ASIC status check - some cards have one or two ASICs that need to be
+loaded. Once that load is complete, this function is called to see if
+the load was successful.
+If this load fails, it does not necessarily mean that the hardware is
+defective - the external box may be disconnected or turned off.
+This routine sometimes fails for Layla20; for Layla20, the loop runs
+5 times and succeeds if it wins on three of the loops. */
+static int check_asic_status(struct echoaudio *chip)
+{
+ u32 asic_status;
+ int goodcnt, i;
+
+ chip->asic_loaded = FALSE;
+ for (i = goodcnt = 0; i < 5; i++) {
+ send_vector(chip, DSP_VC_TEST_ASIC);
+
+ /* The DSP will return a value to indicate whether or not
+ the ASIC is currently loaded */
+ if (read_dsp(chip, &asic_status) < 0) {
+ DE_ACT(("check_asic_status: failed on read_dsp\n"));
+ return -EIO;
+ }
+
+ if (asic_status == ASIC_ALREADY_LOADED) {
+ if (++goodcnt == 3) {
+ chip->asic_loaded = TRUE;
+ return 0;
+ }
+ }
+ }
+ return -EIO;
+}
+
+
+
+/* Layla20 has an ASIC in the external box */
+static int load_asic(struct echoaudio *chip)
+{
+ int err;
+
+ if (chip->asic_loaded)
+ return 0;
+
+ err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA_ASIC,
+ &card_fw[FW_LAYLA20_ASIC]);
+ if (err < 0)
+ return err;
+
+ /* Check if ASIC is alive and well. */
+ return check_asic_status(chip);
+}
+
+
+
+static int set_sample_rate(struct echoaudio *chip, u32 rate)
+{
+ snd_assert(rate >= 8000 && rate <= 50000, return -EINVAL);
+
+ /* Only set the clock for internal mode. Do not return failure,
+ simply treat it as a non-event. */
+ if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
+ DE_ACT(("set_sample_rate: Cannot set sample rate - "
+ "clock not set to CLK_CLOCKININTERNAL\n"));
+ chip->comm_page->sample_rate = cpu_to_le32(rate);
+ chip->sample_rate = rate;
+ return 0;
+ }
+
+ if (wait_handshake(chip))
+ return -EIO;
+
+ DE_ACT(("set_sample_rate(%d)\n", rate));
+ chip->sample_rate = rate;
+ chip->comm_page->sample_rate = cpu_to_le32(rate);
+ clear_handshake(chip);
+ return send_vector(chip, DSP_VC_SET_LAYLA_SAMPLE_RATE);
+}
+
+
+
+static int set_input_clock(struct echoaudio *chip, u16 clock_source)
+{
+ u16 clock;
+ u32 rate;
+
+ DE_ACT(("set_input_clock:\n"));
+ rate = 0;
+ switch (clock_source) {
+ case ECHO_CLOCK_INTERNAL:
+ DE_ACT(("Set Layla20 clock to INTERNAL\n"));
+ rate = chip->sample_rate;
+ clock = LAYLA20_CLOCK_INTERNAL;
+ break;
+ case ECHO_CLOCK_SPDIF:
+ DE_ACT(("Set Layla20 clock to SPDIF\n"));
+ clock = LAYLA20_CLOCK_SPDIF;
+ break;
+ case ECHO_CLOCK_WORD:
+ DE_ACT(("Set Layla20 clock to WORD\n"));
+ clock = LAYLA20_CLOCK_WORD;
+ break;
+ case ECHO_CLOCK_SUPER:
+ DE_ACT(("Set Layla20 clock to SUPER\n"));
+ clock = LAYLA20_CLOCK_SUPER;
+ break;
+ default:
+ DE_ACT(("Input clock 0x%x not supported for Layla24\n",
+ clock_source));
+ return -EINVAL;
+ }
+ chip->input_clock = clock_source;
+
+ chip->comm_page->input_clock = cpu_to_le16(clock);
+ clear_handshake(chip);
+ send_vector(chip, DSP_VC_UPDATE_CLOCKS);
+
+ if (rate)
+ set_sample_rate(chip, rate);
+
+ return 0;
+}
+
+
+
+static int set_output_clock(struct echoaudio *chip, u16 clock)
+{
+ DE_ACT(("set_output_clock: %d\n", clock));
+ switch (clock) {
+ case ECHO_CLOCK_SUPER:
+ clock = LAYLA20_OUTPUT_CLOCK_SUPER;
+ break;
+ case ECHO_CLOCK_WORD:
+ clock = LAYLA20_OUTPUT_CLOCK_WORD;
+ break;
+ default:
+ DE_ACT(("set_output_clock wrong clock\n"));
+ return -EINVAL;
+ }
+
+ if (wait_handshake(chip))
+ return -EIO;
+
+ chip->comm_page->output_clock = cpu_to_le16(clock);
+ chip->output_clock = clock;
+ clear_handshake(chip);
+ return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
+}
+
+
+
+/* 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