1 files changed, 394 insertions, 0 deletions

diff --git a/sound/pci/echoaudio/layla24_dsp.c b/sound/pci/echoaudio/layla24_dsp.c
new file mode 100644
index 000000000000..7ec5b63d0dce
--- /dev/null
+++ b/sound/pci/echoaudio/layla24_dsp.c
@@ -0,0 +1,394 @@
+/****************************************************************************
+
+   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 write_control_reg(struct echoaudio *chip, u32 value, char force);
+static int set_input_clock(struct echoaudio *chip, u16 clock);
+static int set_professional_spdif(struct echoaudio *chip, char prof);
+static int set_digital_mode(struct echoaudio *chip, u8 mode);
+static int load_asic_generic(struct echoaudio *chip, u32 cmd,
+                             const struct firmware *asic);
+static int check_asic_status(struct echoaudio *chip);
+
+
+static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
+{
+        int err;
+
+        DE_INIT(("init_hw() - Layla24\n"));
+        snd_assert((subdevice_id & 0xfff0) == LAYLA24, 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_LAYLA24_DSP];
+        chip->input_clock_types =
+                ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF |
+                ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_ADAT;
+        chip->digital_modes =
+                ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
+                ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
+                ECHOCAPS_HAS_DIGITAL_MODE_ADAT;
+        chip->digital_mode =            DIGITAL_MODE_SPDIF_RCA;
+        chip->professional_spdif = FALSE;
+        chip->digital_in_automute = TRUE;
+
+        if ((err = load_firmware(chip)) < 0)
+                return err;
+        chip->bad_board = FALSE;
+
+        if ((err = init_line_levels(chip)) < 0)
+                return err;
+
+        err = set_digital_mode(chip, DIGITAL_MODE_SPDIF_RCA);
+        snd_assert(err >= 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 & GML_CLOCK_DETECT_BIT_SPDIF)
+                clock_bits |= ECHO_CLOCK_BIT_SPDIF;
+
+        if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_ADAT)
+                clock_bits |= ECHO_CLOCK_BIT_ADAT;
+
+        if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_WORD)
+                clock_bits |= ECHO_CLOCK_BIT_WORD;
+
+        return clock_bits;
+}
+
+
+
+/* Layla24 has an ASIC on the PCI card and another ASIC in the external box;
+both need to be loaded. */
+static int load_asic(struct echoaudio *chip)
+{
+        int err;
+
+        if (chip->asic_loaded)
+                return 1;
+
+        DE_INIT(("load_asic\n"));
+
+        /* Give the DSP a few milliseconds to settle down */
+        mdelay(10);
+
+        /* Load the ASIC for the PCI card */
+        err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_PCI_CARD_ASIC,
+                                &card_fw[FW_LAYLA24_1_ASIC]);
+        if (err < 0)
+                return err;
+
+        chip->asic_code = &card_fw[FW_LAYLA24_2S_ASIC];
+
+        /* Now give the new ASIC a little time to set up */
+        mdelay(10);
+
+        /* Do the external one */
+        err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_EXTERNAL_ASIC,
+                                &card_fw[FW_LAYLA24_2S_ASIC]);
+        if (err < 0)
+                return FALSE;
+
+        /* Now give the external ASIC a little time to set up */
+        mdelay(10);
+
+        /* See if it worked */
+        err = check_asic_status(chip);
+
+        /* Set up the control register if the load succeeded -
+           48 kHz, internal clock, S/PDIF RCA mode */
+        if (!err)
+                err = write_control_reg(chip, GML_CONVERTER_ENABLE | GML_48KHZ,
+                                        TRUE);
+        
+        DE_INIT(("load_asic() done\n"));
+        return err;
+}
+
+
+
+static int set_sample_rate(struct echoaudio *chip, u32 rate)
+{
+        u32 control_reg, clock, base_rate;
+
+        snd_assert(rate < 50000 || chip->digital_mode != DIGITAL_MODE_ADAT,
+                   return -EINVAL);
+
+        /* Only set the clock for internal mode. */
+        if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
+                DE_ACT(("set_sample_rate: Cannot set sample rate - "
+                        "clock not set to CLK_CLOCKININTERNAL\n"));
+                /* Save the rate anyhow */
+                chip->comm_page->sample_rate = cpu_to_le32(rate);
+                chip->sample_rate = rate;
+                return 0;
+        }
+
+        /* Get the control register & clear the appropriate bits */
+        control_reg = le32_to_cpu(chip->comm_page->control_register);
+        control_reg &= GML_CLOCK_CLEAR_MASK & GML_SPDIF_RATE_CLEAR_MASK;
+
+        clock = 0;
+
+        switch (rate) {
+        case 96000:
+                clock = GML_96KHZ;
+                break;
+        case 88200:
+                clock = GML_88KHZ;
+                break;
+        case 48000:
+                clock = GML_48KHZ | GML_SPDIF_SAMPLE_RATE1;
+                break;
+        case 44100:
+                clock = GML_44KHZ;
+                /* Professional mode */
+                if (control_reg & GML_SPDIF_PRO_MODE)
+                        clock |= GML_SPDIF_SAMPLE_RATE0;
+                break;
+        case 32000:
+                clock = GML_32KHZ | GML_SPDIF_SAMPLE_RATE0 |
+                        GML_SPDIF_SAMPLE_RATE1;
+                break;
+        case 22050:
+                clock = GML_22KHZ;
+                break;
+        case 16000:
+                clock = GML_16KHZ;
+                break;
+        case 11025:
+                clock = GML_11KHZ;
+                break;
+        case 8000:
+                clock = GML_8KHZ;
+                break;
+        default:
+                /* If this is a non-standard rate, then the driver needs to
+                use Layla24's special "continuous frequency" mode */
+                clock = LAYLA24_CONTINUOUS_CLOCK;
+                if (rate > 50000) {
+                        base_rate = rate >> 1;
+                        control_reg |= GML_DOUBLE_SPEED_MODE;
+                } else {
+                        base_rate = rate;
+                }
+
+                if (base_rate < 25000)
+                        base_rate = 25000;
+
+                if (wait_handshake(chip))
+                        return -EIO;
+
+                chip->comm_page->sample_rate =
+                        cpu_to_le32(LAYLA24_MAGIC_NUMBER / base_rate - 2);
+
+                clear_handshake(chip);
+                send_vector(chip, DSP_VC_SET_LAYLA24_FREQUENCY_REG);
+        }
+
+        control_reg |= clock;
+
+        chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP ? */
+        chip->sample_rate = rate;
+        DE_ACT(("set_sample_rate: %d clock %d\n", rate, control_reg));
+
+        return write_control_reg(chip, control_reg, FALSE);
+}
+
+
+
+static int set_input_clock(struct echoaudio *chip, u16 clock)
+{
+        u32 control_reg, clocks_from_dsp;
+
+        /* Mask off the clock select bits */
+        control_reg = le32_to_cpu(chip->comm_page->control_register) &
+                GML_CLOCK_CLEAR_MASK;
+        clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
+
+        /* Pick the new clock */
+        switch (clock) {
+        case ECHO_CLOCK_INTERNAL:
+                DE_ACT(("Set Layla24 clock to INTERNAL\n"));
+                chip->input_clock = ECHO_CLOCK_INTERNAL;
+                return set_sample_rate(chip, chip->sample_rate);
+        case ECHO_CLOCK_SPDIF:
+                if (chip->digital_mode == DIGITAL_MODE_ADAT)
+                        return -EAGAIN;
+                control_reg |= GML_SPDIF_CLOCK;
+                /* Layla24 doesn't support 96KHz S/PDIF */
+                control_reg &= ~GML_DOUBLE_SPEED_MODE;
+                DE_ACT(("Set Layla24 clock to SPDIF\n"));
+                break;
+        case ECHO_CLOCK_WORD:
+                control_reg |= GML_WORD_CLOCK;
+                if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_WORD96)
+                        control_reg |= GML_DOUBLE_SPEED_MODE;
+                else
+                        control_reg &= ~GML_DOUBLE_SPEED_MODE;
+                DE_ACT(("Set Layla24 clock to WORD\n"));
+                break;
+        case ECHO_CLOCK_ADAT:
+                if (chip->digital_mode != DIGITAL_MODE_ADAT)
+                        return -EAGAIN;
+                control_reg |= GML_ADAT_CLOCK;
+                control_reg &= ~GML_DOUBLE_SPEED_MODE;
+                DE_ACT(("Set Layla24 clock to ADAT\n"));
+                break;
+        default:
+                DE_ACT(("Input clock 0x%x not supported for Layla24\n", clock));
+                return -EINVAL;
+        }
+
+        chip->input_clock = clock;
+        return write_control_reg(chip, control_reg, TRUE);
+}
+
+
+
+/* Depending on what digital mode you want, Layla24 needs different ASICs
+loaded.  This function checks the ASIC needed for the new mode and sees
+if it matches the one already loaded. */
+static int switch_asic(struct echoaudio *chip, const struct firmware *asic)
+{
+        s8 *monitors;
+
+        /*  Check to see if this is already loaded */
+        if (asic != chip->asic_code) {
+                monitors = kmalloc(MONITOR_ARRAY_SIZE, GFP_KERNEL);
+                if (! monitors)
+                        return -ENOMEM;
+
+                memcpy(monitors, chip->comm_page->monitors, MONITOR_ARRAY_SIZE);
+                memset(chip->comm_page->monitors, ECHOGAIN_MUTED,
+                       MONITOR_ARRAY_SIZE);
+
+                /* Load the desired ASIC */
+                if (load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_EXTERNAL_ASIC,
+                                      asic) < 0) {
+                        memcpy(chip->comm_page->monitors, monitors,
+                               MONITOR_ARRAY_SIZE);
+                        kfree(monitors);
+                        return -EIO;
+                }
+                chip->asic_code = asic;
+                memcpy(chip->comm_page->monitors, monitors, MONITOR_ARRAY_SIZE);
+                kfree(monitors);
+        }
+
+        return 0;
+}
+
+
+
+static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode)
+{
+        u32 control_reg;
+        int err, incompatible_clock;
+        const struct firmware *asic;
+
+        /* Set clock to "internal" if it's not compatible with the new mode */
+        incompatible_clock = FALSE;
+        switch (mode) {
+        case DIGITAL_MODE_SPDIF_OPTICAL:
+        case DIGITAL_MODE_SPDIF_RCA:
+                if (chip->input_clock == ECHO_CLOCK_ADAT)
+                        incompatible_clock = TRUE;
+                asic = &card_fw[FW_LAYLA24_2S_ASIC];
+                break;
+        case DIGITAL_MODE_ADAT:
+                if (chip->input_clock == ECHO_CLOCK_SPDIF)
+                        incompatible_clock = TRUE;
+                asic = &card_fw[FW_LAYLA24_2A_ASIC];
+                break;
+        default:
+                DE_ACT(("Digital mode not supported: %d\n", mode));
+                return -EINVAL;
+        }
+
+        if (incompatible_clock) {       /* Switch to 48KHz, internal */
+                chip->sample_rate = 48000;
+                spin_lock_irq(&chip->lock);
+                set_input_clock(chip, ECHO_CLOCK_INTERNAL);
+                spin_unlock_irq(&chip->lock);
+        }
+
+        /* switch_asic() can sleep */
+        if (switch_asic(chip, asic) < 0)
+                return -EIO;
+
+        spin_lock_irq(&chip->lock);
+
+        /* Tweak the control register */
+        control_reg = le32_to_cpu(chip->comm_page->control_register);
+        control_reg &= GML_DIGITAL_MODE_CLEAR_MASK;
+
+        switch (mode) {
+        case DIGITAL_MODE_SPDIF_OPTICAL:
+                control_reg |= GML_SPDIF_OPTICAL_MODE;
+                break;
+        case DIGITAL_MODE_SPDIF_RCA:
+                /* GML_SPDIF_OPTICAL_MODE bit cleared */
+                break;
+        case DIGITAL_MODE_ADAT:
+                control_reg |= GML_ADAT_MODE;
+                control_reg &= ~GML_DOUBLE_SPEED_MODE;
+                break;
+        }
+
+        err = write_control_reg(chip, control_reg, TRUE);
+        spin_unlock_irq(&chip->lock);
+        if (err < 0)
+                return err;
+        chip->digital_mode = mode;
+
+        DE_ACT(("set_digital_mode to %d\n", mode));
+        return incompatible_clock;
+}