549717fc5b
PCI echoaudio drivers contain a few assignments in if condition, which is a bad coding style that may confuse readers and occasionally lead to bugs. This patch is merely for coding-style fixes, no functional changes. Link: https://lore.kernel.org/r/20210608140540.17885-40-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
1157 lines
30 KiB
C
1157 lines
30 KiB
C
/****************************************************************************
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Copyright Echo Digital Audio Corporation (c) 1998 - 2004
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All rights reserved
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www.echoaudio.com
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This file is part of Echo Digital Audio's generic driver library.
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Echo Digital Audio's generic driver library is free software;
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you can redistribute it and/or modify it under the terms of
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the GNU General Public License as published by the Free Software
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Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA.
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*************************************************************************
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Translation from C++ and adaptation for use in ALSA-Driver
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were made by Giuliano Pochini <pochini@shiny.it>
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****************************************************************************/
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#if PAGE_SIZE < 4096
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#error PAGE_SIZE is < 4k
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#endif
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static int restore_dsp_rettings(struct echoaudio *chip);
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/* Some vector commands involve the DSP reading or writing data to and from the
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comm page; if you send one of these commands to the DSP, it will complete the
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command and then write a non-zero value to the Handshake field in the
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comm page. This function waits for the handshake to show up. */
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static int wait_handshake(struct echoaudio *chip)
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{
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int i;
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/* Wait up to 20ms for the handshake from the DSP */
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for (i = 0; i < HANDSHAKE_TIMEOUT; i++) {
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/* Look for the handshake value */
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barrier();
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if (chip->comm_page->handshake) {
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return 0;
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}
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udelay(1);
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}
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dev_err(chip->card->dev, "wait_handshake(): Timeout waiting for DSP\n");
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return -EBUSY;
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}
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/* Much of the interaction between the DSP and the driver is done via vector
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commands; send_vector writes a vector command to the DSP. Typically, this
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causes the DSP to read or write fields in the comm page.
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PCI posting is not required thanks to the handshake logic. */
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static int send_vector(struct echoaudio *chip, u32 command)
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{
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int i;
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wmb(); /* Flush all pending writes before sending the command */
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/* Wait up to 100ms for the "vector busy" bit to be off */
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for (i = 0; i < VECTOR_BUSY_TIMEOUT; i++) {
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if (!(get_dsp_register(chip, CHI32_VECTOR_REG) &
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CHI32_VECTOR_BUSY)) {
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set_dsp_register(chip, CHI32_VECTOR_REG, command);
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/*if (i) DE_ACT(("send_vector time: %d\n", i));*/
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return 0;
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}
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udelay(1);
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}
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dev_err(chip->card->dev, "timeout on send_vector\n");
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return -EBUSY;
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}
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/* write_dsp writes a 32-bit value to the DSP; this is used almost
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exclusively for loading the DSP. */
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static int write_dsp(struct echoaudio *chip, u32 data)
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{
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u32 status, i;
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for (i = 0; i < 10000000; i++) { /* timeout = 10s */
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status = get_dsp_register(chip, CHI32_STATUS_REG);
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if ((status & CHI32_STATUS_HOST_WRITE_EMPTY) != 0) {
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set_dsp_register(chip, CHI32_DATA_REG, data);
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wmb(); /* write it immediately */
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return 0;
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}
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udelay(1);
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cond_resched();
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}
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chip->bad_board = true; /* Set true until DSP re-loaded */
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dev_dbg(chip->card->dev, "write_dsp: Set bad_board to true\n");
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return -EIO;
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}
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/* read_dsp reads a 32-bit value from the DSP; this is used almost
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exclusively for loading the DSP and checking the status of the ASIC. */
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static int read_dsp(struct echoaudio *chip, u32 *data)
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{
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u32 status, i;
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for (i = 0; i < READ_DSP_TIMEOUT; i++) {
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status = get_dsp_register(chip, CHI32_STATUS_REG);
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if ((status & CHI32_STATUS_HOST_READ_FULL) != 0) {
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*data = get_dsp_register(chip, CHI32_DATA_REG);
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return 0;
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}
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udelay(1);
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cond_resched();
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}
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chip->bad_board = true; /* Set true until DSP re-loaded */
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dev_err(chip->card->dev, "read_dsp: Set bad_board to true\n");
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return -EIO;
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}
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/****************************************************************************
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Firmware loading functions
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****************************************************************************/
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/* This function is used to read back the serial number from the DSP;
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this is triggered by the SET_COMMPAGE_ADDR command.
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Only some early Echogals products have serial numbers in the ROM;
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the serial number is not used, but you still need to do this as
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part of the DSP load process. */
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static int read_sn(struct echoaudio *chip)
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{
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int i;
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u32 sn[6];
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for (i = 0; i < 5; i++) {
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if (read_dsp(chip, &sn[i])) {
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dev_err(chip->card->dev,
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"Failed to read serial number\n");
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return -EIO;
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}
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}
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dev_dbg(chip->card->dev,
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"Read serial number %08x %08x %08x %08x %08x\n",
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sn[0], sn[1], sn[2], sn[3], sn[4]);
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return 0;
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}
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#ifndef ECHOCARD_HAS_ASIC
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/* This card has no ASIC, just return ok */
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static inline int check_asic_status(struct echoaudio *chip)
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{
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chip->asic_loaded = true;
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return 0;
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}
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#endif /* !ECHOCARD_HAS_ASIC */
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#ifdef ECHOCARD_HAS_ASIC
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/* Load ASIC code - done after the DSP is loaded */
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static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic)
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{
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const struct firmware *fw;
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int err;
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u32 i, size;
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u8 *code;
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err = get_firmware(&fw, chip, asic);
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if (err < 0) {
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dev_warn(chip->card->dev, "Firmware not found !\n");
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return err;
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}
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code = (u8 *)fw->data;
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size = fw->size;
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/* Send the "Here comes the ASIC" command */
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if (write_dsp(chip, cmd) < 0)
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goto la_error;
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/* Write length of ASIC file in bytes */
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if (write_dsp(chip, size) < 0)
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goto la_error;
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for (i = 0; i < size; i++) {
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if (write_dsp(chip, code[i]) < 0)
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goto la_error;
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}
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free_firmware(fw, chip);
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return 0;
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la_error:
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dev_err(chip->card->dev, "failed on write_dsp\n");
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free_firmware(fw, chip);
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return -EIO;
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}
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#endif /* ECHOCARD_HAS_ASIC */
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#ifdef DSP_56361
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/* Install the resident loader for 56361 DSPs; The resident loader is on
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the EPROM on the board for 56301 DSP. The resident loader is a tiny little
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program that is used to load the real DSP code. */
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static int install_resident_loader(struct echoaudio *chip)
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{
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u32 address;
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int index, words, i;
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u16 *code;
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u32 status;
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const struct firmware *fw;
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/* 56361 cards only! This check is required by the old 56301-based
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Mona and Gina24 */
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if (chip->device_id != DEVICE_ID_56361)
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return 0;
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/* Look to see if the resident loader is present. If the resident
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loader is already installed, host flag 5 will be on. */
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status = get_dsp_register(chip, CHI32_STATUS_REG);
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if (status & CHI32_STATUS_REG_HF5) {
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dev_dbg(chip->card->dev,
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"Resident loader already installed; status is 0x%x\n",
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status);
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return 0;
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}
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i = get_firmware(&fw, chip, FW_361_LOADER);
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if (i < 0) {
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dev_warn(chip->card->dev, "Firmware not found !\n");
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return i;
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}
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/* The DSP code is an array of 16 bit words. The array is divided up
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into sections. The first word of each section is the size in words,
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followed by the section type.
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Since DSP addresses and data are 24 bits wide, they each take up two
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16 bit words in the array.
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This is a lot like the other loader loop, but it's not a loop, you
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don't write the memory type, and you don't write a zero at the end. */
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/* Set DSP format bits for 24 bit mode */
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set_dsp_register(chip, CHI32_CONTROL_REG,
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get_dsp_register(chip, CHI32_CONTROL_REG) | 0x900);
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code = (u16 *)fw->data;
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/* Skip the header section; the first word in the array is the size
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of the first section, so the first real section of code is pointed
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to by Code[0]. */
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index = code[0];
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/* Skip the section size, LRS block type, and DSP memory type */
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index += 3;
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/* Get the number of DSP words to write */
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words = code[index++];
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/* Get the DSP address for this block; 24 bits, so build from two words */
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address = ((u32)code[index] << 16) + code[index + 1];
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index += 2;
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/* Write the count to the DSP */
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if (write_dsp(chip, words)) {
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dev_err(chip->card->dev,
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"install_resident_loader: Failed to write word count!\n");
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goto irl_error;
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}
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/* Write the DSP address */
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if (write_dsp(chip, address)) {
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dev_err(chip->card->dev,
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"install_resident_loader: Failed to write DSP address!\n");
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goto irl_error;
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}
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/* Write out this block of code to the DSP */
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for (i = 0; i < words; i++) {
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u32 data;
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data = ((u32)code[index] << 16) + code[index + 1];
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if (write_dsp(chip, data)) {
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dev_err(chip->card->dev,
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"install_resident_loader: Failed to write DSP code\n");
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goto irl_error;
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}
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index += 2;
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}
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/* Wait for flag 5 to come up */
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for (i = 0; i < 200; i++) { /* Timeout is 50us * 200 = 10ms */
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udelay(50);
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status = get_dsp_register(chip, CHI32_STATUS_REG);
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if (status & CHI32_STATUS_REG_HF5)
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break;
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}
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if (i == 200) {
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dev_err(chip->card->dev, "Resident loader failed to set HF5\n");
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goto irl_error;
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}
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dev_dbg(chip->card->dev, "Resident loader successfully installed\n");
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free_firmware(fw, chip);
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return 0;
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irl_error:
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free_firmware(fw, chip);
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return -EIO;
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}
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#endif /* DSP_56361 */
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static int load_dsp(struct echoaudio *chip, u16 *code)
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{
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u32 address, data;
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int index, words, i;
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if (chip->dsp_code == code) {
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dev_warn(chip->card->dev, "DSP is already loaded!\n");
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return 0;
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}
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chip->bad_board = true; /* Set true until DSP loaded */
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chip->dsp_code = NULL; /* Current DSP code not loaded */
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chip->asic_loaded = false; /* Loading the DSP code will reset the ASIC */
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dev_dbg(chip->card->dev, "load_dsp: Set bad_board to true\n");
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/* If this board requires a resident loader, install it. */
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#ifdef DSP_56361
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i = install_resident_loader(chip);
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if (i < 0)
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return i;
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#endif
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/* Send software reset command */
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if (send_vector(chip, DSP_VC_RESET) < 0) {
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dev_err(chip->card->dev,
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"LoadDsp: send_vector DSP_VC_RESET failed, Critical Failure\n");
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return -EIO;
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}
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/* Delay 10us */
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udelay(10);
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/* Wait 10ms for HF3 to indicate that software reset is complete */
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for (i = 0; i < 1000; i++) { /* Timeout is 10us * 1000 = 10ms */
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if (get_dsp_register(chip, CHI32_STATUS_REG) &
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CHI32_STATUS_REG_HF3)
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break;
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udelay(10);
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}
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if (i == 1000) {
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dev_err(chip->card->dev,
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"load_dsp: Timeout waiting for CHI32_STATUS_REG_HF3\n");
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return -EIO;
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}
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/* Set DSP format bits for 24 bit mode now that soft reset is done */
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set_dsp_register(chip, CHI32_CONTROL_REG,
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get_dsp_register(chip, CHI32_CONTROL_REG) | 0x900);
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/* Main loader loop */
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index = code[0];
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for (;;) {
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int block_type, mem_type;
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/* Total Block Size */
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index++;
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/* Block Type */
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block_type = code[index];
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if (block_type == 4) /* We're finished */
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break;
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index++;
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/* Memory Type P=0,X=1,Y=2 */
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mem_type = code[index++];
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/* Block Code Size */
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words = code[index++];
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if (words == 0) /* We're finished */
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break;
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/* Start Address */
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address = ((u32)code[index] << 16) + code[index + 1];
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index += 2;
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if (write_dsp(chip, words) < 0) {
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dev_err(chip->card->dev,
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"load_dsp: failed to write number of DSP words\n");
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return -EIO;
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}
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if (write_dsp(chip, address) < 0) {
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dev_err(chip->card->dev,
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"load_dsp: failed to write DSP address\n");
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return -EIO;
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}
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if (write_dsp(chip, mem_type) < 0) {
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dev_err(chip->card->dev,
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"load_dsp: failed to write DSP memory type\n");
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return -EIO;
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}
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/* Code */
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for (i = 0; i < words; i++, index+=2) {
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data = ((u32)code[index] << 16) + code[index + 1];
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if (write_dsp(chip, data) < 0) {
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dev_err(chip->card->dev,
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"load_dsp: failed to write DSP data\n");
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return -EIO;
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}
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}
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}
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if (write_dsp(chip, 0) < 0) { /* We're done!!! */
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dev_err(chip->card->dev,
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"load_dsp: Failed to write final zero\n");
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return -EIO;
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}
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udelay(10);
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for (i = 0; i < 5000; i++) { /* Timeout is 100us * 5000 = 500ms */
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/* Wait for flag 4 - indicates that the DSP loaded OK */
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if (get_dsp_register(chip, CHI32_STATUS_REG) &
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CHI32_STATUS_REG_HF4) {
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set_dsp_register(chip, CHI32_CONTROL_REG,
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get_dsp_register(chip, CHI32_CONTROL_REG) & ~0x1b00);
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|
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if (write_dsp(chip, DSP_FNC_SET_COMMPAGE_ADDR) < 0) {
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dev_err(chip->card->dev,
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"load_dsp: Failed to write DSP_FNC_SET_COMMPAGE_ADDR\n");
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return -EIO;
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}
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if (write_dsp(chip, chip->comm_page_phys) < 0) {
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dev_err(chip->card->dev,
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"load_dsp: Failed to write comm page address\n");
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return -EIO;
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}
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|
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/* Get the serial number via slave mode.
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This is triggered by the SET_COMMPAGE_ADDR command.
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We don't actually use the serial number but we have to
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get it as part of the DSP init voodoo. */
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if (read_sn(chip) < 0) {
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dev_err(chip->card->dev,
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"load_dsp: Failed to read serial number\n");
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return -EIO;
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}
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chip->dsp_code = code; /* Show which DSP code loaded */
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chip->bad_board = false; /* DSP OK */
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return 0;
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}
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udelay(100);
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}
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dev_err(chip->card->dev,
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"load_dsp: DSP load timed out waiting for HF4\n");
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return -EIO;
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}
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|
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/* load_firmware takes care of loading the DSP and any ASIC code. */
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static int load_firmware(struct echoaudio *chip)
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{
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const struct firmware *fw;
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int box_type, err;
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if (snd_BUG_ON(!chip->comm_page))
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return -EPERM;
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/* See if the ASIC is present and working - only if the DSP is already loaded */
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if (chip->dsp_code) {
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box_type = check_asic_status(chip);
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if (box_type >= 0)
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return box_type;
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/* ASIC check failed; force the DSP to reload */
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chip->dsp_code = NULL;
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}
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|
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err = get_firmware(&fw, chip, chip->dsp_code_to_load);
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if (err < 0)
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return err;
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err = load_dsp(chip, (u16 *)fw->data);
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free_firmware(fw, chip);
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if (err < 0)
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return err;
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|
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box_type = load_asic(chip);
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if (box_type < 0)
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return box_type; /* error */
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|
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return box_type;
|
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}
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|
|
|
|
|
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/****************************************************************************
|
|
Mixer functions
|
|
****************************************************************************/
|
|
|
|
#if defined(ECHOCARD_HAS_INPUT_NOMINAL_LEVEL) || \
|
|
defined(ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL)
|
|
|
|
/* Set the nominal level for an input or output bus (true = -10dBV, false = +4dBu) */
|
|
static int set_nominal_level(struct echoaudio *chip, u16 index, char consumer)
|
|
{
|
|
if (snd_BUG_ON(index >= num_busses_out(chip) + num_busses_in(chip)))
|
|
return -EINVAL;
|
|
|
|
/* Wait for the handshake (OK even if ASIC is not loaded) */
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
|
|
chip->nominal_level[index] = consumer;
|
|
|
|
if (consumer)
|
|
chip->comm_page->nominal_level_mask |= cpu_to_le32(1 << index);
|
|
else
|
|
chip->comm_page->nominal_level_mask &= ~cpu_to_le32(1 << index);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* ECHOCARD_HAS_*_NOMINAL_LEVEL */
|
|
|
|
|
|
|
|
/* Set the gain for a single physical output channel (dB). */
|
|
static int set_output_gain(struct echoaudio *chip, u16 channel, s8 gain)
|
|
{
|
|
if (snd_BUG_ON(channel >= num_busses_out(chip)))
|
|
return -EINVAL;
|
|
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
|
|
/* Save the new value */
|
|
chip->output_gain[channel] = gain;
|
|
chip->comm_page->line_out_level[channel] = gain;
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
#ifdef ECHOCARD_HAS_MONITOR
|
|
/* Set the monitor level from an input bus to an output bus. */
|
|
static int set_monitor_gain(struct echoaudio *chip, u16 output, u16 input,
|
|
s8 gain)
|
|
{
|
|
if (snd_BUG_ON(output >= num_busses_out(chip) ||
|
|
input >= num_busses_in(chip)))
|
|
return -EINVAL;
|
|
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
|
|
chip->monitor_gain[output][input] = gain;
|
|
chip->comm_page->monitors[monitor_index(chip, output, input)] = gain;
|
|
return 0;
|
|
}
|
|
#endif /* ECHOCARD_HAS_MONITOR */
|
|
|
|
|
|
/* Tell the DSP to read and update output, nominal & monitor levels in comm page. */
|
|
static int update_output_line_level(struct echoaudio *chip)
|
|
{
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
clear_handshake(chip);
|
|
return send_vector(chip, DSP_VC_UPDATE_OUTVOL);
|
|
}
|
|
|
|
|
|
|
|
/* Tell the DSP to read and update input levels in comm page */
|
|
static int update_input_line_level(struct echoaudio *chip)
|
|
{
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
clear_handshake(chip);
|
|
return send_vector(chip, DSP_VC_UPDATE_INGAIN);
|
|
}
|
|
|
|
|
|
|
|
/* set_meters_on turns the meters on or off. If meters are turned on, the DSP
|
|
will write the meter and clock detect values to the comm page at about 30Hz */
|
|
static void set_meters_on(struct echoaudio *chip, char on)
|
|
{
|
|
if (on && !chip->meters_enabled) {
|
|
send_vector(chip, DSP_VC_METERS_ON);
|
|
chip->meters_enabled = 1;
|
|
} else if (!on && chip->meters_enabled) {
|
|
send_vector(chip, DSP_VC_METERS_OFF);
|
|
chip->meters_enabled = 0;
|
|
memset((s8 *)chip->comm_page->vu_meter, ECHOGAIN_MUTED,
|
|
DSP_MAXPIPES);
|
|
memset((s8 *)chip->comm_page->peak_meter, ECHOGAIN_MUTED,
|
|
DSP_MAXPIPES);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/* Fill out an the given array using the current values in the comm page.
|
|
Meters are written in the comm page by the DSP in this order:
|
|
Output busses
|
|
Input busses
|
|
Output pipes (vmixer cards only)
|
|
|
|
This function assumes there are no more than 16 in/out busses or pipes
|
|
Meters is an array [3][16][2] of long. */
|
|
static void get_audio_meters(struct echoaudio *chip, long *meters)
|
|
{
|
|
unsigned int i, m, n;
|
|
|
|
for (i = 0 ; i < 96; i++)
|
|
meters[i] = 0;
|
|
|
|
for (m = 0, n = 0, i = 0; i < num_busses_out(chip); i++, m++) {
|
|
meters[n++] = chip->comm_page->vu_meter[m];
|
|
meters[n++] = chip->comm_page->peak_meter[m];
|
|
}
|
|
|
|
#ifdef ECHOCARD_ECHO3G
|
|
m = E3G_MAX_OUTPUTS; /* Skip unused meters */
|
|
#endif
|
|
|
|
for (n = 32, i = 0; i < num_busses_in(chip); i++, m++) {
|
|
meters[n++] = chip->comm_page->vu_meter[m];
|
|
meters[n++] = chip->comm_page->peak_meter[m];
|
|
}
|
|
#ifdef ECHOCARD_HAS_VMIXER
|
|
for (n = 64, i = 0; i < num_pipes_out(chip); i++, m++) {
|
|
meters[n++] = chip->comm_page->vu_meter[m];
|
|
meters[n++] = chip->comm_page->peak_meter[m];
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
static int restore_dsp_rettings(struct echoaudio *chip)
|
|
{
|
|
int i, o, err;
|
|
|
|
err = check_asic_status(chip);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Gina20/Darla20 only. Should be harmless for other cards. */
|
|
chip->comm_page->gd_clock_state = GD_CLOCK_UNDEF;
|
|
chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_UNDEF;
|
|
chip->comm_page->handshake = cpu_to_le32(0xffffffff);
|
|
|
|
/* Restore output busses */
|
|
for (i = 0; i < num_busses_out(chip); i++) {
|
|
err = set_output_gain(chip, i, chip->output_gain[i]);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
#ifdef ECHOCARD_HAS_VMIXER
|
|
for (i = 0; i < num_pipes_out(chip); i++)
|
|
for (o = 0; o < num_busses_out(chip); o++) {
|
|
err = set_vmixer_gain(chip, o, i,
|
|
chip->vmixer_gain[o][i]);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
if (update_vmixer_level(chip) < 0)
|
|
return -EIO;
|
|
#endif /* ECHOCARD_HAS_VMIXER */
|
|
|
|
#ifdef ECHOCARD_HAS_MONITOR
|
|
for (o = 0; o < num_busses_out(chip); o++)
|
|
for (i = 0; i < num_busses_in(chip); i++) {
|
|
err = set_monitor_gain(chip, o, i,
|
|
chip->monitor_gain[o][i]);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
#endif /* ECHOCARD_HAS_MONITOR */
|
|
|
|
#ifdef ECHOCARD_HAS_INPUT_GAIN
|
|
for (i = 0; i < num_busses_in(chip); i++) {
|
|
err = set_input_gain(chip, i, chip->input_gain[i]);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
#endif /* ECHOCARD_HAS_INPUT_GAIN */
|
|
|
|
err = update_output_line_level(chip);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = update_input_line_level(chip);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = set_sample_rate(chip, chip->sample_rate);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (chip->meters_enabled) {
|
|
err = send_vector(chip, DSP_VC_METERS_ON);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
#ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH
|
|
if (set_digital_mode(chip, chip->digital_mode) < 0)
|
|
return -EIO;
|
|
#endif
|
|
|
|
#ifdef ECHOCARD_HAS_DIGITAL_IO
|
|
if (set_professional_spdif(chip, chip->professional_spdif) < 0)
|
|
return -EIO;
|
|
#endif
|
|
|
|
#ifdef ECHOCARD_HAS_PHANTOM_POWER
|
|
if (set_phantom_power(chip, chip->phantom_power) < 0)
|
|
return -EIO;
|
|
#endif
|
|
|
|
#ifdef ECHOCARD_HAS_EXTERNAL_CLOCK
|
|
/* set_input_clock() also restores automute setting */
|
|
if (set_input_clock(chip, chip->input_clock) < 0)
|
|
return -EIO;
|
|
#endif
|
|
|
|
#ifdef ECHOCARD_HAS_OUTPUT_CLOCK_SWITCH
|
|
if (set_output_clock(chip, chip->output_clock) < 0)
|
|
return -EIO;
|
|
#endif
|
|
|
|
if (wait_handshake(chip) < 0)
|
|
return -EIO;
|
|
clear_handshake(chip);
|
|
if (send_vector(chip, DSP_VC_UPDATE_FLAGS) < 0)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/****************************************************************************
|
|
Transport functions
|
|
****************************************************************************/
|
|
|
|
/* set_audio_format() sets the format of the audio data in host memory for
|
|
this pipe. Note that _MS_ (mono-to-stereo) playback modes are not used by ALSA
|
|
but they are here because they are just mono while capturing */
|
|
static void set_audio_format(struct echoaudio *chip, u16 pipe_index,
|
|
const struct audioformat *format)
|
|
{
|
|
u16 dsp_format;
|
|
|
|
dsp_format = DSP_AUDIOFORM_SS_16LE;
|
|
|
|
/* Look for super-interleave (no big-endian and 8 bits) */
|
|
if (format->interleave > 2) {
|
|
switch (format->bits_per_sample) {
|
|
case 16:
|
|
dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_16LE;
|
|
break;
|
|
case 24:
|
|
dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_24LE;
|
|
break;
|
|
case 32:
|
|
dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_32LE;
|
|
break;
|
|
}
|
|
dsp_format |= format->interleave;
|
|
} else if (format->data_are_bigendian) {
|
|
/* For big-endian data, only 32 bit samples are supported */
|
|
switch (format->interleave) {
|
|
case 1:
|
|
dsp_format = DSP_AUDIOFORM_MM_32BE;
|
|
break;
|
|
#ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
|
|
case 2:
|
|
dsp_format = DSP_AUDIOFORM_SS_32BE;
|
|
break;
|
|
#endif
|
|
}
|
|
} else if (format->interleave == 1 &&
|
|
format->bits_per_sample == 32 && !format->mono_to_stereo) {
|
|
/* 32 bit little-endian mono->mono case */
|
|
dsp_format = DSP_AUDIOFORM_MM_32LE;
|
|
} else {
|
|
/* Handle the other little-endian formats */
|
|
switch (format->bits_per_sample) {
|
|
case 8:
|
|
if (format->interleave == 2)
|
|
dsp_format = DSP_AUDIOFORM_SS_8;
|
|
else
|
|
dsp_format = DSP_AUDIOFORM_MS_8;
|
|
break;
|
|
default:
|
|
case 16:
|
|
if (format->interleave == 2)
|
|
dsp_format = DSP_AUDIOFORM_SS_16LE;
|
|
else
|
|
dsp_format = DSP_AUDIOFORM_MS_16LE;
|
|
break;
|
|
case 24:
|
|
if (format->interleave == 2)
|
|
dsp_format = DSP_AUDIOFORM_SS_24LE;
|
|
else
|
|
dsp_format = DSP_AUDIOFORM_MS_24LE;
|
|
break;
|
|
case 32:
|
|
if (format->interleave == 2)
|
|
dsp_format = DSP_AUDIOFORM_SS_32LE;
|
|
else
|
|
dsp_format = DSP_AUDIOFORM_MS_32LE;
|
|
break;
|
|
}
|
|
}
|
|
dev_dbg(chip->card->dev,
|
|
"set_audio_format[%d] = %x\n", pipe_index, dsp_format);
|
|
chip->comm_page->audio_format[pipe_index] = cpu_to_le16(dsp_format);
|
|
}
|
|
|
|
|
|
|
|
/* start_transport starts transport for a set of pipes.
|
|
The bits 1 in channel_mask specify what pipes to start. Only the bit of the
|
|
first channel must be set, regardless its interleave.
|
|
Same thing for pause_ and stop_ -trasport below. */
|
|
static int start_transport(struct echoaudio *chip, u32 channel_mask,
|
|
u32 cyclic_mask)
|
|
{
|
|
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
|
|
chip->comm_page->cmd_start |= cpu_to_le32(channel_mask);
|
|
|
|
if (chip->comm_page->cmd_start) {
|
|
clear_handshake(chip);
|
|
send_vector(chip, DSP_VC_START_TRANSFER);
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
/* Keep track of which pipes are transporting */
|
|
chip->active_mask |= channel_mask;
|
|
chip->comm_page->cmd_start = 0;
|
|
return 0;
|
|
}
|
|
|
|
dev_err(chip->card->dev, "start_transport: No pipes to start!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
|
|
|
|
static int pause_transport(struct echoaudio *chip, u32 channel_mask)
|
|
{
|
|
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
|
|
chip->comm_page->cmd_stop |= cpu_to_le32(channel_mask);
|
|
chip->comm_page->cmd_reset = 0;
|
|
if (chip->comm_page->cmd_stop) {
|
|
clear_handshake(chip);
|
|
send_vector(chip, DSP_VC_STOP_TRANSFER);
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
/* Keep track of which pipes are transporting */
|
|
chip->active_mask &= ~channel_mask;
|
|
chip->comm_page->cmd_stop = 0;
|
|
chip->comm_page->cmd_reset = 0;
|
|
return 0;
|
|
}
|
|
|
|
dev_dbg(chip->card->dev, "pause_transport: No pipes to stop!\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
static int stop_transport(struct echoaudio *chip, u32 channel_mask)
|
|
{
|
|
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
|
|
chip->comm_page->cmd_stop |= cpu_to_le32(channel_mask);
|
|
chip->comm_page->cmd_reset |= cpu_to_le32(channel_mask);
|
|
if (chip->comm_page->cmd_reset) {
|
|
clear_handshake(chip);
|
|
send_vector(chip, DSP_VC_STOP_TRANSFER);
|
|
if (wait_handshake(chip))
|
|
return -EIO;
|
|
/* Keep track of which pipes are transporting */
|
|
chip->active_mask &= ~channel_mask;
|
|
chip->comm_page->cmd_stop = 0;
|
|
chip->comm_page->cmd_reset = 0;
|
|
return 0;
|
|
}
|
|
|
|
dev_dbg(chip->card->dev, "stop_transport: No pipes to stop!\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
static inline int is_pipe_allocated(struct echoaudio *chip, u16 pipe_index)
|
|
{
|
|
return (chip->pipe_alloc_mask & (1 << pipe_index));
|
|
}
|
|
|
|
|
|
|
|
/* Stops everything and turns off the DSP. All pipes should be already
|
|
stopped and unallocated. */
|
|
static int rest_in_peace(struct echoaudio *chip)
|
|
{
|
|
|
|
/* Stops all active pipes (just to be sure) */
|
|
stop_transport(chip, chip->active_mask);
|
|
|
|
set_meters_on(chip, false);
|
|
|
|
#ifdef ECHOCARD_HAS_MIDI
|
|
enable_midi_input(chip, false);
|
|
#endif
|
|
|
|
/* Go to sleep */
|
|
if (chip->dsp_code) {
|
|
/* Make load_firmware do a complete reload */
|
|
chip->dsp_code = NULL;
|
|
/* Put the DSP to sleep */
|
|
return send_vector(chip, DSP_VC_GO_COMATOSE);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/* Fills the comm page with default values */
|
|
static int init_dsp_comm_page(struct echoaudio *chip)
|
|
{
|
|
/* Check if the compiler added extra padding inside the structure */
|
|
if (offsetof(struct comm_page, midi_output) != 0xbe0) {
|
|
dev_err(chip->card->dev,
|
|
"init_dsp_comm_page() - Invalid struct comm_page structure\n");
|
|
return -EPERM;
|
|
}
|
|
|
|
/* Init all the basic stuff */
|
|
chip->card_name = ECHOCARD_NAME;
|
|
chip->bad_board = true; /* Set true until DSP loaded */
|
|
chip->dsp_code = NULL; /* Current DSP code not loaded */
|
|
chip->asic_loaded = false;
|
|
memset(chip->comm_page, 0, sizeof(struct comm_page));
|
|
|
|
/* Init the comm page */
|
|
chip->comm_page->comm_size =
|
|
cpu_to_le32(sizeof(struct comm_page));
|
|
chip->comm_page->handshake = cpu_to_le32(0xffffffff);
|
|
chip->comm_page->midi_out_free_count =
|
|
cpu_to_le32(DSP_MIDI_OUT_FIFO_SIZE);
|
|
chip->comm_page->sample_rate = cpu_to_le32(44100);
|
|
|
|
/* Set line levels so we don't blast any inputs on startup */
|
|
memset(chip->comm_page->monitors, ECHOGAIN_MUTED, MONITOR_ARRAY_SIZE);
|
|
memset(chip->comm_page->vmixer, ECHOGAIN_MUTED, VMIXER_ARRAY_SIZE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/* This function initializes the chip structure with default values, ie. all
|
|
* muted and internal clock source. Then it copies the settings to the DSP.
|
|
* This MUST be called after the DSP is up and running !
|
|
*/
|
|
static int init_line_levels(struct echoaudio *chip)
|
|
{
|
|
memset(chip->output_gain, ECHOGAIN_MUTED, sizeof(chip->output_gain));
|
|
memset(chip->input_gain, ECHOGAIN_MUTED, sizeof(chip->input_gain));
|
|
memset(chip->monitor_gain, ECHOGAIN_MUTED, sizeof(chip->monitor_gain));
|
|
memset(chip->vmixer_gain, ECHOGAIN_MUTED, sizeof(chip->vmixer_gain));
|
|
chip->input_clock = ECHO_CLOCK_INTERNAL;
|
|
chip->output_clock = ECHO_CLOCK_WORD;
|
|
chip->sample_rate = 44100;
|
|
return restore_dsp_rettings(chip);
|
|
}
|
|
|
|
|
|
|
|
/* This is low level part of the interrupt handler.
|
|
It returns -1 if the IRQ is not ours, or N>=0 if it is, where N is the number
|
|
of midi data in the input queue. */
|
|
static int service_irq(struct echoaudio *chip)
|
|
{
|
|
int st;
|
|
|
|
/* Read the DSP status register and see if this DSP generated this interrupt */
|
|
if (get_dsp_register(chip, CHI32_STATUS_REG) & CHI32_STATUS_IRQ) {
|
|
st = 0;
|
|
#ifdef ECHOCARD_HAS_MIDI
|
|
/* Get and parse midi data if present */
|
|
if (chip->comm_page->midi_input[0]) /* The count is at index 0 */
|
|
st = midi_service_irq(chip); /* Returns how many midi bytes we received */
|
|
#endif
|
|
/* Clear the hardware interrupt */
|
|
chip->comm_page->midi_input[0] = 0;
|
|
send_vector(chip, DSP_VC_ACK_INT);
|
|
return st;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
Functions for opening and closing pipes
|
|
******************************************************************************/
|
|
|
|
/* allocate_pipes is used to reserve audio pipes for your exclusive use.
|
|
The call will fail if some pipes are already allocated. */
|
|
static int allocate_pipes(struct echoaudio *chip, struct audiopipe *pipe,
|
|
int pipe_index, int interleave)
|
|
{
|
|
int i;
|
|
u32 channel_mask;
|
|
|
|
dev_dbg(chip->card->dev,
|
|
"allocate_pipes: ch=%d int=%d\n", pipe_index, interleave);
|
|
|
|
if (chip->bad_board)
|
|
return -EIO;
|
|
|
|
for (channel_mask = i = 0; i < interleave; i++)
|
|
channel_mask |= 1 << (pipe_index + i);
|
|
if (chip->pipe_alloc_mask & channel_mask) {
|
|
dev_err(chip->card->dev,
|
|
"allocate_pipes: channel already open\n");
|
|
return -EAGAIN;
|
|
}
|
|
|
|
chip->comm_page->position[pipe_index] = 0;
|
|
chip->pipe_alloc_mask |= channel_mask;
|
|
/* This driver uses cyclic buffers only */
|
|
chip->pipe_cyclic_mask |= channel_mask;
|
|
pipe->index = pipe_index;
|
|
pipe->interleave = interleave;
|
|
pipe->state = PIPE_STATE_STOPPED;
|
|
|
|
/* The counter register is where the DSP writes the 32 bit DMA
|
|
position for a pipe. The DSP is constantly updating this value as
|
|
it moves data. The DMA counter is in units of bytes, not samples. */
|
|
pipe->dma_counter = (__le32 *)&chip->comm_page->position[pipe_index];
|
|
*pipe->dma_counter = 0;
|
|
return pipe_index;
|
|
}
|
|
|
|
|
|
|
|
static int free_pipes(struct echoaudio *chip, struct audiopipe *pipe)
|
|
{
|
|
u32 channel_mask;
|
|
int i;
|
|
|
|
if (snd_BUG_ON(!is_pipe_allocated(chip, pipe->index)))
|
|
return -EINVAL;
|
|
if (snd_BUG_ON(pipe->state != PIPE_STATE_STOPPED))
|
|
return -EINVAL;
|
|
|
|
for (channel_mask = i = 0; i < pipe->interleave; i++)
|
|
channel_mask |= 1 << (pipe->index + i);
|
|
|
|
chip->pipe_alloc_mask &= ~channel_mask;
|
|
chip->pipe_cyclic_mask &= ~channel_mask;
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
Functions for managing the scatter-gather list
|
|
******************************************************************************/
|
|
|
|
static int sglist_init(struct echoaudio *chip, struct audiopipe *pipe)
|
|
{
|
|
pipe->sglist_head = 0;
|
|
memset(pipe->sgpage.area, 0, PAGE_SIZE);
|
|
chip->comm_page->sglist_addr[pipe->index].addr =
|
|
cpu_to_le32(pipe->sgpage.addr);
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
static int sglist_add_mapping(struct echoaudio *chip, struct audiopipe *pipe,
|
|
dma_addr_t address, size_t length)
|
|
{
|
|
int head = pipe->sglist_head;
|
|
struct sg_entry *list = (struct sg_entry *)pipe->sgpage.area;
|
|
|
|
if (head < MAX_SGLIST_ENTRIES - 1) {
|
|
list[head].addr = cpu_to_le32(address);
|
|
list[head].size = cpu_to_le32(length);
|
|
pipe->sglist_head++;
|
|
} else {
|
|
dev_err(chip->card->dev, "SGlist: too many fragments\n");
|
|
return -ENOMEM;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
static inline int sglist_add_irq(struct echoaudio *chip, struct audiopipe *pipe)
|
|
{
|
|
return sglist_add_mapping(chip, pipe, 0, 0);
|
|
}
|
|
|
|
|
|
|
|
static inline int sglist_wrap(struct echoaudio *chip, struct audiopipe *pipe)
|
|
{
|
|
return sglist_add_mapping(chip, pipe, pipe->sgpage.addr, 0);
|
|
}
|