1 files changed, 290 insertions, 0 deletions

diff --git a/sound/pci/echoaudio/layla20_dsp.c b/sound/pci/echoaudio/layla20_dsp.c
new file mode 100644
index 000000000000..990c9a60a0a8
--- /dev/null
+++ b/sound/pci/echoaudio/layla20_dsp.c
@@ -0,0 +1,290 @@
+/****************************************************************************
+
+   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);
+}