1 files changed, 431 insertions, 0 deletions

diff --git a/sound/pci/echoaudio/echoaudio_3g.c b/sound/pci/echoaudio/echoaudio_3g.c
new file mode 100644
index 000000000000..9f439ea459f4
--- /dev/null
+++ b/sound/pci/echoaudio/echoaudio_3g.c
@@ -0,0 +1,431 @@
+/****************************************************************************
+
+   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>
+
+****************************************************************************/
+
+
+
+/* These functions are common for all "3G" cards */
+
+
+static int check_asic_status(struct echoaudio *chip)
+{
+        u32 box_status;
+
+        if (wait_handshake(chip))
+                return -EIO;
+
+        chip->comm_page->ext_box_status =
+                __constant_cpu_to_le32(E3G_ASIC_NOT_LOADED);
+        chip->asic_loaded = FALSE;
+        clear_handshake(chip);
+        send_vector(chip, DSP_VC_TEST_ASIC);
+
+        if (wait_handshake(chip)) {
+                chip->dsp_code = NULL;
+                return -EIO;
+        }
+
+        box_status = le32_to_cpu(chip->comm_page->ext_box_status);
+        DE_INIT(("box_status=%x\n", box_status));
+        if (box_status == E3G_ASIC_NOT_LOADED)
+                return -ENODEV;
+
+        chip->asic_loaded = TRUE;
+        return box_status & E3G_BOX_TYPE_MASK;
+}
+
+
+
+static inline u32 get_frq_reg(struct echoaudio *chip)
+{
+        return le32_to_cpu(chip->comm_page->e3g_frq_register);
+}
+
+
+
+/* Most configuration of 3G cards is accomplished by writing the control
+register. write_control_reg sends the new control register value to the DSP. */
+static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
+                             char force)
+{
+        if (wait_handshake(chip))
+                return -EIO;
+
+        DE_ACT(("WriteControlReg: Setting 0x%x, 0x%x\n", ctl, frq));
+
+        ctl = cpu_to_le32(ctl);
+        frq = cpu_to_le32(frq);
+
+        if (ctl != chip->comm_page->control_register ||
+            frq != chip->comm_page->e3g_frq_register || force) {
+                chip->comm_page->e3g_frq_register = frq;
+                chip->comm_page->control_register = ctl;
+                clear_handshake(chip);
+                return send_vector(chip, DSP_VC_WRITE_CONTROL_REG);
+        }
+
+        DE_ACT(("WriteControlReg: not written, no change\n"));
+        return 0;
+}
+
+
+
+/* Set the digital mode - currently for Gina24, Layla24, Mona, 3G */
+static int set_digital_mode(struct echoaudio *chip, u8 mode)
+{
+        u8 previous_mode;
+        int err, i, o;
+
+        /* All audio channels must be closed before changing the digital mode */
+        snd_assert(!chip->pipe_alloc_mask, return -EAGAIN);
+
+        snd_assert(chip->digital_modes & (1 << mode), return -EINVAL);
+
+        previous_mode = chip->digital_mode;
+        err = dsp_set_digital_mode(chip, mode);
+
+        /* If we successfully changed the digital mode from or to ADAT,
+         * then make sure all output, input and monitor levels are
+         * updated by the DSP comm object. */
+        if (err >= 0 && previous_mode != mode &&
+            (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) {
+                spin_lock_irq(&chip->lock);
+                for (o = 0; o < num_busses_out(chip); o++)
+                        for (i = 0; i < num_busses_in(chip); i++)
+                                set_monitor_gain(chip, o, i,
+                                                 chip->monitor_gain[o][i]);
+
+#ifdef ECHOCARD_HAS_INPUT_GAIN
+                for (i = 0; i < num_busses_in(chip); i++)
+                        set_input_gain(chip, i, chip->input_gain[i]);
+                update_input_line_level(chip);
+#endif
+
+                for (o = 0; o < num_busses_out(chip); o++)
+                        set_output_gain(chip, o, chip->output_gain[o]);
+                update_output_line_level(chip);
+                spin_unlock_irq(&chip->lock);
+        }
+
+        return err;
+}
+
+
+
+static u32 set_spdif_bits(struct echoaudio *chip, u32 control_reg, u32 rate)
+{
+        control_reg &= E3G_SPDIF_FORMAT_CLEAR_MASK;
+
+        switch (rate) {
+        case 32000 :
+                control_reg |= E3G_SPDIF_SAMPLE_RATE0 | E3G_SPDIF_SAMPLE_RATE1;
+                break;
+        case 44100 :
+                if (chip->professional_spdif)
+                        control_reg |= E3G_SPDIF_SAMPLE_RATE0;
+                break;
+        case 48000 :
+                control_reg |= E3G_SPDIF_SAMPLE_RATE1;
+                break;
+        }
+
+        if (chip->professional_spdif)
+                control_reg |= E3G_SPDIF_PRO_MODE;
+
+        if (chip->non_audio_spdif)
+                control_reg |= E3G_SPDIF_NOT_AUDIO;
+
+        control_reg |= E3G_SPDIF_24_BIT | E3G_SPDIF_TWO_CHANNEL |
+                E3G_SPDIF_COPY_PERMIT;
+
+        return control_reg;
+}
+
+
+
+/* Set the S/PDIF output format */
+static int set_professional_spdif(struct echoaudio *chip, char prof)
+{
+        u32 control_reg;
+
+        control_reg = le32_to_cpu(chip->comm_page->control_register);
+        chip->professional_spdif = prof;
+        control_reg = set_spdif_bits(chip, control_reg, chip->sample_rate);
+        return write_control_reg(chip, control_reg, get_frq_reg(chip), 0);
+}
+
+
+
+/* detect_input_clocks() returns a bitmask consisting of all the input clocks
+currently connected to the hardware; this changes as the user connects and
+disconnects clock inputs. You should use this information to determine which
+clocks the user is allowed to select. */
+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 & E3G_CLOCK_DETECT_BIT_WORD)
+                clock_bits |= ECHO_CLOCK_BIT_WORD;
+
+        switch(chip->digital_mode) {
+        case DIGITAL_MODE_SPDIF_RCA:
+        case DIGITAL_MODE_SPDIF_OPTICAL:
+                if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF)
+                        clock_bits |= ECHO_CLOCK_BIT_SPDIF;
+                break;
+        case DIGITAL_MODE_ADAT:
+                if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_ADAT)
+                        clock_bits |= ECHO_CLOCK_BIT_ADAT;
+                break;
+        }
+
+        return clock_bits;
+}
+
+
+
+static int load_asic(struct echoaudio *chip)
+{
+        int box_type, err;
+
+        if (chip->asic_loaded)
+                return 0;
+
+        /* Give the DSP a few milliseconds to settle down */
+        mdelay(2);
+
+        err = load_asic_generic(chip, DSP_FNC_LOAD_3G_ASIC,
+                                &card_fw[FW_3G_ASIC]);
+        if (err < 0)
+                return err;
+
+        chip->asic_code = &card_fw[FW_3G_ASIC];
+
+        /* Now give the new ASIC a little time to set up */
+        mdelay(2);
+        /* See if it worked */
+        box_type = check_asic_status(chip);
+
+        /* Set up the control register if the load succeeded -
+         * 48 kHz, internal clock, S/PDIF RCA mode */
+        if (box_type >= 0) {
+                err = write_control_reg(chip, E3G_48KHZ,
+                                        E3G_FREQ_REG_DEFAULT, TRUE);
+                if (err < 0)
+                        return err;
+        }
+
+        return box_type;
+}
+
+
+
+static int set_sample_rate(struct echoaudio *chip, u32 rate)
+{
+        u32 control_reg, clock, base_rate, frq_reg;
+
+        /* 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;
+                set_input_clock(chip, chip->input_clock);
+                return 0;
+        }
+
+        snd_assert(rate < 50000 || chip->digital_mode != DIGITAL_MODE_ADAT,
+                   return -EINVAL);
+
+        clock = 0;
+        control_reg = le32_to_cpu(chip->comm_page->control_register);
+        control_reg &= E3G_CLOCK_CLEAR_MASK;
+
+        switch (rate) {
+        case 96000:
+                clock = E3G_96KHZ;
+                break;
+        case 88200:
+                clock = E3G_88KHZ;
+                break;
+        case 48000:
+                clock = E3G_48KHZ;
+                break;
+        case 44100:
+                clock = E3G_44KHZ;
+                break;
+        case 32000:
+                clock = E3G_32KHZ;
+                break;
+        default:
+                clock = E3G_CONTINUOUS_CLOCK;
+                if (rate > 50000)
+                        clock |= E3G_DOUBLE_SPEED_MODE;
+                break;
+        }
+
+        control_reg |= clock;
+        control_reg = set_spdif_bits(chip, control_reg, rate);
+
+        base_rate = rate;
+        if (base_rate > 50000)
+                base_rate /= 2;
+        if (base_rate < 32000)
+                base_rate = 32000;
+
+        frq_reg = E3G_MAGIC_NUMBER / base_rate - 2;
+        if (frq_reg > E3G_FREQ_REG_MAX)
+                frq_reg = E3G_FREQ_REG_MAX;
+
+        chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP */
+        chip->sample_rate = rate;
+        DE_ACT(("SetSampleRate: %d clock %x\n", rate, control_reg));
+
+        /* Tell the DSP about it - DSP reads both control reg & freq reg */
+        return write_control_reg(chip, control_reg, frq_reg, 0);
+}
+
+
+
+/* Set the sample clock source to internal, S/PDIF, ADAT */
+static int set_input_clock(struct echoaudio *chip, u16 clock)
+{
+        u32 control_reg, clocks_from_dsp;
+
+        DE_ACT(("set_input_clock:\n"));
+
+        /* Mask off the clock select bits */
+        control_reg = le32_to_cpu(chip->comm_page->control_register) &
+                E3G_CLOCK_CLEAR_MASK;
+        clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
+
+        switch (clock) {
+        case ECHO_CLOCK_INTERNAL:
+                DE_ACT(("Set Echo3G 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;
+                DE_ACT(("Set Echo3G clock to SPDIF\n"));
+                control_reg |= E3G_SPDIF_CLOCK;
+                if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF96)
+                        control_reg |= E3G_DOUBLE_SPEED_MODE;
+                else
+                        control_reg &= ~E3G_DOUBLE_SPEED_MODE;
+                break;
+        case ECHO_CLOCK_ADAT:
+                if (chip->digital_mode != DIGITAL_MODE_ADAT)
+                        return -EAGAIN;
+                DE_ACT(("Set Echo3G clock to ADAT\n"));
+                control_reg |= E3G_ADAT_CLOCK;
+                control_reg &= ~E3G_DOUBLE_SPEED_MODE;
+                break;
+        case ECHO_CLOCK_WORD:
+                DE_ACT(("Set Echo3G clock to WORD\n"));
+                control_reg |= E3G_WORD_CLOCK;
+                if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD96)
+                        control_reg |= E3G_DOUBLE_SPEED_MODE;
+                else
+                        control_reg &= ~E3G_DOUBLE_SPEED_MODE;
+                break;
+        default:
+                DE_ACT(("Input clock 0x%x not supported for Echo3G\n", clock));
+                return -EINVAL;
+        }
+
+        chip->input_clock = clock;
+        return write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
+}
+
+
+
+static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode)
+{
+        u32 control_reg;
+        int err, incompatible_clock;
+
+        /* 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;
+                break;
+        case DIGITAL_MODE_ADAT:
+                if (chip->input_clock == ECHO_CLOCK_SPDIF)
+                        incompatible_clock = TRUE;
+                break;
+        default:
+                DE_ACT(("Digital mode not supported: %d\n", mode));
+                return -EINVAL;
+        }
+
+        spin_lock_irq(&chip->lock);
+
+        if (incompatible_clock) {
+                chip->sample_rate = 48000;
+                set_input_clock(chip, ECHO_CLOCK_INTERNAL);
+        }
+
+        /* Clear the current digital mode */
+        control_reg = le32_to_cpu(chip->comm_page->control_register);
+        control_reg &= E3G_DIGITAL_MODE_CLEAR_MASK;
+
+        /* Tweak the control reg */
+        switch (mode) {
+        case DIGITAL_MODE_SPDIF_OPTICAL:
+                control_reg |= E3G_SPDIF_OPTICAL_MODE;
+                break;
+        case DIGITAL_MODE_SPDIF_RCA:
+                /* E3G_SPDIF_OPTICAL_MODE bit cleared */
+                break;
+        case DIGITAL_MODE_ADAT:
+                control_reg |= E3G_ADAT_MODE;
+                control_reg &= ~E3G_DOUBLE_SPEED_MODE;  /* @@ useless */
+                break;
+        }
+
+        err = write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
+        spin_unlock_irq(&chip->lock);
+        if (err < 0)
+                return err;
+        chip->digital_mode = mode;
+
+        DE_ACT(("set_digital_mode(%d)\n", chip->digital_mode));
+        return incompatible_clock;
+}