--- /dev/null
+/*
+ * Driver for Digigram VX soundcards
+ *
+ * Hardware core part
+ *
+ * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
+ *
+ * This program 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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
+ */
+
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/asoundef.h>
+#include <sound/info.h>
+#include <sound/vx_core.h>
+#include "vx_cmd.h"
+
+MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
+MODULE_DESCRIPTION("Common routines for Digigram VX drivers");
+MODULE_LICENSE("GPL");
+
+
+/*
+ * vx_check_reg_bit - wait for the specified bit is set/reset on a register
+ * @reg: register to check
+ * @mask: bit mask
+ * @bit: resultant bit to be checked
+ * @time: time-out of loop in msec
+ *
+ * returns zero if a bit matches, or a negative error code.
+ */
+int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time)
+{
+ unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
+ static char *reg_names[VX_REG_MAX] = {
+ "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL",
+ "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ",
+ "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2",
+ "MIC3", "INTCSR", "CNTRL", "GPIOC",
+ "LOFREQ", "HIFREQ", "CSUER", "RUER"
+ };
+
+ do {
+ if ((snd_vx_inb(chip, reg) & mask) == bit)
+ return 0;
+ //msleep(10);
+ } while (time_after_eq(end_time, jiffies));
+ snd_printd(KERN_DEBUG "vx_check_reg_bit: timeout, reg=%s, mask=0x%x, val=0x%x\n", reg_names[reg], mask, snd_vx_inb(chip, reg));
+ return -EIO;
+}
+
+EXPORT_SYMBOL(snd_vx_check_reg_bit);
+
+/*
+ * vx_send_irq_dsp - set command irq bit
+ * @num: the requested IRQ type, IRQ_XXX
+ *
+ * this triggers the specified IRQ request
+ * returns 0 if successful, or a negative error code.
+ *
+ */
+static int vx_send_irq_dsp(struct vx_core *chip, int num)
+{
+ int nirq;
+
+ /* wait for Hc = 0 */
+ if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0)
+ return -EIO;
+
+ nirq = num;
+ if (vx_has_new_dsp(chip))
+ nirq += VXP_IRQ_OFFSET;
+ vx_outb(chip, CVR, (nirq >> 1) | CVR_HC);
+ return 0;
+}
+
+
+/*
+ * vx_reset_chk - reset CHK bit on ISR
+ *
+ * returns 0 if successful, or a negative error code.
+ */
+static int vx_reset_chk(struct vx_core *chip)
+{
+ /* Reset irq CHK */
+ if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0)
+ return -EIO;
+ /* Wait until CHK = 0 */
+ if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0)
+ return -EIO;
+ return 0;
+}
+
+/*
+ * vx_transfer_end - terminate message transfer
+ * @cmd: IRQ message to send (IRQ_MESS_XXX_END)
+ *
+ * returns 0 if successful, or a negative error code.
+ * the error code can be VX-specific, retrieved via vx_get_error().
+ * NB: call with mutex held!
+ */
+static int vx_transfer_end(struct vx_core *chip, int cmd)
+{
+ int err;
+
+ if ((err = vx_reset_chk(chip)) < 0)
+ return err;
+
+ /* irq MESS_READ/WRITE_END */
+ if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
+ return err;
+
+ /* Wait CHK = 1 */
+ if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
+ return err;
+
+ /* If error, Read RX */
+ if ((err = vx_inb(chip, ISR)) & ISR_ERR) {
+ if ((err = vx_wait_for_rx_full(chip)) < 0) {
+ snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n");
+ return err;
+ }
+ err = vx_inb(chip, RXH) << 16;
+ err |= vx_inb(chip, RXM) << 8;
+ err |= vx_inb(chip, RXL);
+ snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err);
+ return -(VX_ERR_MASK | err);
+ }
+ return 0;
+}
+
+/*
+ * vx_read_status - return the status rmh
+ * @rmh: rmh record to store the status
+ *
+ * returns 0 if successful, or a negative error code.
+ * the error code can be VX-specific, retrieved via vx_get_error().
+ * NB: call with mutex held!
+ */
+static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh)
+{
+ int i, err, val, size;
+
+ /* no read necessary? */
+ if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0)
+ return 0;
+
+ /* Wait for RX full (with timeout protection)
+ * The first word of status is in RX
+ */
+ err = vx_wait_for_rx_full(chip);
+ if (err < 0)
+ return err;
+
+ /* Read RX */
+ val = vx_inb(chip, RXH) << 16;
+ val |= vx_inb(chip, RXM) << 8;
+ val |= vx_inb(chip, RXL);
+
+ /* If status given by DSP, let's decode its size */
+ switch (rmh->DspStat) {
+ case RMH_SSIZE_ARG:
+ size = val & 0xff;
+ rmh->Stat[0] = val & 0xffff00;
+ rmh->LgStat = size + 1;
+ break;
+ case RMH_SSIZE_MASK:
+ /* Let's count the arg numbers from a mask */
+ rmh->Stat[0] = val;
+ size = 0;
+ while (val) {
+ if (val & 0x01)
+ size++;
+ val >>= 1;
+ }
+ rmh->LgStat = size + 1;
+ break;
+ default:
+ /* else retrieve the status length given by the driver */
+ size = rmh->LgStat;
+ rmh->Stat[0] = val; /* Val is the status 1st word */
+ size--; /* hence adjust remaining length */
+ break;
+ }
+
+ if (size < 1)
+ return 0;
+ if (snd_BUG_ON(size >= SIZE_MAX_STATUS))
+ return -EINVAL;
+
+ for (i = 1; i <= size; i++) {
+ /* trigger an irq MESS_WRITE_NEXT */
+ err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT);
+ if (err < 0)
+ return err;
+ /* Wait for RX full (with timeout protection) */
+ err = vx_wait_for_rx_full(chip);
+ if (err < 0)
+ return err;
+ rmh->Stat[i] = vx_inb(chip, RXH) << 16;
+ rmh->Stat[i] |= vx_inb(chip, RXM) << 8;
+ rmh->Stat[i] |= vx_inb(chip, RXL);
+ }
+
+ return vx_transfer_end(chip, IRQ_MESS_WRITE_END);
+}
+
+
+#define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000
+#define MASK_1_WORD_COMMAND 0x00ff7fff
+
+/*
+ * vx_send_msg_nolock - send a DSP message and read back the status
+ * @rmh: the rmh record to send and receive
+ *
+ * returns 0 if successful, or a negative error code.
+ * the error code can be VX-specific, retrieved via vx_get_error().
+ *
+ * this function doesn't call mutex lock at all.
+ */
+int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh)
+{
+ int i, err;
+
+ if (chip->chip_status & VX_STAT_IS_STALE)
+ return -EBUSY;
+
+ if ((err = vx_reset_chk(chip)) < 0) {
+ snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n");
+ return err;
+ }
+
+#if 0
+ printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n",
+ rmh->Cmd[0], rmh->LgCmd, rmh->DspStat);
+ if (rmh->LgCmd > 1) {
+ printk(KERN_DEBUG " ");
+ for (i = 1; i < rmh->LgCmd; i++)
+ printk("0x%06x ", rmh->Cmd[i]);
+ printk("\n");
+ }
+#endif
+ /* Check bit M is set according to length of the command */
+ if (rmh->LgCmd > 1)
+ rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND;
+ else
+ rmh->Cmd[0] &= MASK_1_WORD_COMMAND;
+
+ /* Wait for TX empty */
+ if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
+ snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n");
+ return err;
+ }
+
+ /* Write Cmd[0] */
+ vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff);
+ vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff);
+ vx_outb(chip, TXL, rmh->Cmd[0] & 0xff);
+
+ /* Trigger irq MESSAGE */
+ if ((err = vx_send_irq_dsp(chip, IRQ_MESSAGE)) < 0) {
+ snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n");
+ return err;
+ }
+
+ /* Wait for CHK = 1 */
+ if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
+ return err;
+
+ /* If error, get error value from RX */
+ if (vx_inb(chip, ISR) & ISR_ERR) {
+ if ((err = vx_wait_for_rx_full(chip)) < 0) {
+ snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n");
+ return err;
+ }
+ err = vx_inb(chip, RXH) << 16;
+ err |= vx_inb(chip, RXM) << 8;
+ err |= vx_inb(chip, RXL);
+ snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err);
+ err = -(VX_ERR_MASK | err);
+ return err;
+ }
+
+ /* Send the other words */
+ if (rmh->LgCmd > 1) {
+ for (i = 1; i < rmh->LgCmd; i++) {
+ /* Wait for TX ready */
+ if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) {
+ snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n");
+ return err;
+ }
+
+ /* Write Cmd[i] */
+ vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff);
+ vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff);
+ vx_outb(chip, TXL, rmh->Cmd[i] & 0xff);
+
+ /* Trigger irq MESS_READ_NEXT */
+ if ((err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT)) < 0) {
+ snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n");
+ return err;
+ }
+ }
+ /* Wait for TX empty */
+ if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) {
+ snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n");
+ return err;
+ }
+ /* End of transfer */
+ err = vx_transfer_end(chip, IRQ_MESS_READ_END);
+ if (err < 0)
+ return err;
+ }
+
+ return vx_read_status(chip, rmh);
+}
+
+
+/*
+ * vx_send_msg - send a DSP message with mutex
+ * @rmh: the rmh record to send and receive
+ *
+ * returns 0 if successful, or a negative error code.
+ * see vx_send_msg_nolock().
+ */
+int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh)
+{
+ int err;
+
+ mutex_lock(&chip->lock);
+ err = vx_send_msg_nolock(chip, rmh);
+ mutex_unlock(&chip->lock);
+ return err;
+}
+
+
+/*
+ * vx_send_rih_nolock - send an RIH to xilinx
+ * @cmd: the command to send
+ *
+ * returns 0 if successful, or a negative error code.
+ * the error code can be VX-specific, retrieved via vx_get_error().
+ *
+ * this function doesn't call mutex at all.
+ *
+ * unlike RMH, no command is sent to DSP.
+ */
+int vx_send_rih_nolock(struct vx_core *chip, int cmd)
+{
+ int err;
+
+ if (chip->chip_status & VX_STAT_IS_STALE)
+ return -EBUSY;
+
+#if 0
+ printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd);
+#endif
+ if ((err = vx_reset_chk(chip)) < 0)
+ return err;
+ /* send the IRQ */
+ if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
+ return err;
+ /* Wait CHK = 1 */
+ if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
+ return err;
+ /* If error, read RX */
+ if (vx_inb(chip, ISR) & ISR_ERR) {
+ if ((err = vx_wait_for_rx_full(chip)) < 0)
+ return err;
+ err = vx_inb(chip, RXH) << 16;
+ err |= vx_inb(chip, RXM) << 8;
+ err |= vx_inb(chip, RXL);
+ return -(VX_ERR_MASK | err);
+ }
+ return 0;
+}
+
+
+/*
+ * vx_send_rih - send an RIH with mutex
+ * @cmd: the command to send
+ *
+ * see vx_send_rih_nolock().
+ */
+int vx_send_rih(struct vx_core *chip, int cmd)
+{
+ int err;
+
+ mutex_lock(&chip->lock);
+ err = vx_send_rih_nolock(chip, cmd);
+ mutex_unlock(&chip->lock);
+ return err;
+}
+
+#define END_OF_RESET_WAIT_TIME 500 /* us */
+
+/**
+ * snd_vx_boot_xilinx - boot up the xilinx interface
+ * @chip: VX core instance
+ * @boot: the boot record to load
+ */
+int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot)
+{
+ unsigned int i;
+ int no_fillup = vx_has_new_dsp(chip);
+
+ /* check the length of boot image */
+ if (boot->size <= 0)
+ return -EINVAL;
+ if (boot->size % 3)
+ return -EINVAL;
+#if 0
+ {
+ /* more strict check */
+ unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2];
+ if (boot->size != (c + 2) * 3)
+ return -EINVAL;
+ }
+#endif
+
+ /* reset dsp */
+ vx_reset_dsp(chip);
+
+ udelay(END_OF_RESET_WAIT_TIME); /* another wait? */
+
+ /* download boot strap */
+ for (i = 0; i < 0x600; i += 3) {
+ if (i >= boot->size) {
+ if (no_fillup)
+ break;
+ if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
+ snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
+ return -EIO;
+ }
+ vx_outb(chip, TXH, 0);
+ vx_outb(chip, TXM, 0);
+ vx_outb(chip, TXL, 0);
+ } else {
+ const unsigned char *image = boot->data + i;
+ if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
+ snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
+ return -EIO;
+ }
+ vx_outb(chip, TXH, image[0]);
+ vx_outb(chip, TXM, image[1]);
+ vx_outb(chip, TXL, image[2]);
+ }
+ }
+ return 0;
+}
+
+EXPORT_SYMBOL(snd_vx_load_boot_image);
+
+/*
+ * vx_test_irq_src - query the source of interrupts
+ *
+ * called from irq handler only
+ */
+static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret)
+{
+ int err;
+
+ vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT);
+ mutex_lock(&chip->lock);
+ err = vx_send_msg_nolock(chip, &chip->irq_rmh);
+ if (err < 0)
+ *ret = 0;
+ else
+ *ret = chip->irq_rmh.Stat[0];
+ mutex_unlock(&chip->lock);
+ return err;
+}
+
+
+/*
+ * snd_vx_threaded_irq_handler - threaded irq handler
+ */
+irqreturn_t snd_vx_threaded_irq_handler(int irq, void *dev)
+{
+ struct vx_core *chip = dev;
+ unsigned int events;
+
+ if (chip->chip_status & VX_STAT_IS_STALE)
+ return IRQ_HANDLED;
+
+ if (vx_test_irq_src(chip, &events) < 0)
+ return IRQ_HANDLED;
+
+#if 0
+ if (events & 0x000800)
+ printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events);
+#endif
+ // printk(KERN_DEBUG "IRQ events = 0x%x\n", events);
+
+ /* We must prevent any application using this DSP
+ * and block any further request until the application
+ * either unregisters or reloads the DSP
+ */
+ if (events & FATAL_DSP_ERROR) {
+ snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n");
+ return IRQ_HANDLED;
+ }
+
+ /* The start on time code conditions are filled (ie the time code
+ * received by the board is equal to one of those given to it).
+ */
+ if (events & TIME_CODE_EVENT_PENDING)
+ ; /* so far, nothing to do yet */
+
+ /* The frequency has changed on the board (UER mode). */
+ if (events & FREQUENCY_CHANGE_EVENT_PENDING)
+ vx_change_frequency(chip);
+
+ /* update the pcm streams */
+ vx_pcm_update_intr(chip, events);
+ return IRQ_HANDLED;
+}
+EXPORT_SYMBOL(snd_vx_threaded_irq_handler);
+
+/**
+ * snd_vx_irq_handler - interrupt handler
+ * @irq: irq number
+ * @dev: VX core instance
+ */
+irqreturn_t snd_vx_irq_handler(int irq, void *dev)
+{
+ struct vx_core *chip = dev;
+
+ if (! (chip->chip_status & VX_STAT_CHIP_INIT) ||
+ (chip->chip_status & VX_STAT_IS_STALE))
+ return IRQ_NONE;
+ if (! vx_test_and_ack(chip))
+ return IRQ_WAKE_THREAD;
+ return IRQ_NONE;
+}
+
+EXPORT_SYMBOL(snd_vx_irq_handler);
+
+/*
+ */
+static void vx_reset_board(struct vx_core *chip, int cold_reset)
+{
+ if (snd_BUG_ON(!chip->ops->reset_board))
+ return;
+
+ /* current source, later sync'ed with target */
+ chip->audio_source = VX_AUDIO_SRC_LINE;
+ if (cold_reset) {
+ chip->audio_source_target = chip->audio_source;
+ chip->clock_source = INTERNAL_QUARTZ;
+ chip->clock_mode = VX_CLOCK_MODE_AUTO;
+ chip->freq = 48000;
+ chip->uer_detected = VX_UER_MODE_NOT_PRESENT;
+ chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
+ }
+
+ chip->ops->reset_board(chip, cold_reset);
+
+ vx_reset_codec(chip, cold_reset);
+
+ vx_set_internal_clock(chip, chip->freq);
+
+ /* Reset the DSP */
+ vx_reset_dsp(chip);
+
+ if (vx_is_pcmcia(chip)) {
+ /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */
+ vx_test_and_ack(chip);
+ vx_validate_irq(chip, 1);
+ }
+
+ /* init CBits */
+ vx_set_iec958_status(chip, chip->uer_bits);
+}
+
+
+/*
+ * proc interface
+ */
+
+static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
+{
+ struct vx_core *chip = entry->private_data;
+ static char *audio_src_vxp[] = { "Line", "Mic", "Digital" };
+ static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" };
+ static char *clock_mode[] = { "Auto", "Internal", "External" };
+ static char *clock_src[] = { "Internal", "External" };
+ static char *uer_type[] = { "Consumer", "Professional", "Not Present" };
+
+ snd_iprintf(buffer, "%s\n", chip->card->longname);
+ snd_iprintf(buffer, "Xilinx Firmware: %s\n",
+ chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No");
+ snd_iprintf(buffer, "Device Initialized: %s\n",
+ chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No");
+ snd_iprintf(buffer, "DSP audio info:");
+ if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME)
+ snd_iprintf(buffer, " realtime");
+ if (chip->audio_info & VX_AUDIO_INFO_OFFLINE)
+ snd_iprintf(buffer, " offline");
+ if (chip->audio_info & VX_AUDIO_INFO_MPEG1)
+ snd_iprintf(buffer, " mpeg1");
+ if (chip->audio_info & VX_AUDIO_INFO_MPEG2)
+ snd_iprintf(buffer, " mpeg2");
+ if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8)
+ snd_iprintf(buffer, " linear8");
+ if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16)
+ snd_iprintf(buffer, " linear16");
+ if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24)
+ snd_iprintf(buffer, " linear24");
+ snd_iprintf(buffer, "\n");
+ snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ?
+ audio_src_vxp[chip->audio_source] :
+ audio_src_vx2[chip->audio_source]);
+ snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]);
+ snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]);
+ snd_iprintf(buffer, "Frequency: %d\n", chip->freq);
+ snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected);
+ snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]);
+ snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n",
+ chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size,
+ chip->ibl.granularity);
+}
+
+static void vx_proc_init(struct vx_core *chip)
+{
+ struct snd_info_entry *entry;
+
+ if (! snd_card_proc_new(chip->card, "vx-status", &entry))
+ snd_info_set_text_ops(entry, chip, vx_proc_read);
+}
+
+
+/**
+ * snd_vx_dsp_boot - load the DSP boot
+ * @chip: VX core instance
+ * @boot: firmware data
+ */
+int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot)
+{
+ int err;
+ int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT);
+
+ vx_reset_board(chip, cold_reset);
+ vx_validate_irq(chip, 0);
+
+ if ((err = snd_vx_load_boot_image(chip, boot)) < 0)
+ return err;
+ msleep(10);
+
+ return 0;
+}
+
+EXPORT_SYMBOL(snd_vx_dsp_boot);
+
+/**
+ * snd_vx_dsp_load - load the DSP image
+ * @chip: VX core instance
+ * @dsp: firmware data
+ */
+int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
+{
+ unsigned int i;
+ int err;
+ unsigned int csum = 0;
+ const unsigned char *image, *cptr;
+
+ if (dsp->size % 3)
+ return -EINVAL;
+
+ vx_toggle_dac_mute(chip, 1);
+
+ /* Transfert data buffer from PC to DSP */
+ for (i = 0; i < dsp->size; i += 3) {
+ image = dsp->data + i;
+ /* Wait DSP ready for a new read */
+ if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
+ printk(KERN_ERR
+ "dsp loading error at position %d\n", i);
+ return err;
+ }
+ cptr = image;
+ csum ^= *cptr;
+ csum = (csum >> 24) | (csum << 8);
+ vx_outb(chip, TXH, *cptr++);
+ csum ^= *cptr;
+ csum = (csum >> 24) | (csum << 8);
+ vx_outb(chip, TXM, *cptr++);
+ csum ^= *cptr;
+ csum = (csum >> 24) | (csum << 8);
+ vx_outb(chip, TXL, *cptr++);
+ }
+ snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum);
+
+ msleep(200);
+
+ if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
+ return err;
+
+ vx_toggle_dac_mute(chip, 0);
+
+ vx_test_and_ack(chip);
+ vx_validate_irq(chip, 1);
+
+ return 0;
+}
+
+EXPORT_SYMBOL(snd_vx_dsp_load);
+
+#ifdef CONFIG_PM
+/*
+ * suspend
+ */
+int snd_vx_suspend(struct vx_core *chip)
+{
+ unsigned int i;
+
+ snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
+ chip->chip_status |= VX_STAT_IN_SUSPEND;
+ for (i = 0; i < chip->hw->num_codecs; i++)
+ snd_pcm_suspend_all(chip->pcm[i]);
+
+ return 0;
+}
+
+EXPORT_SYMBOL(snd_vx_suspend);
+
+/*
+ * resume
+ */
+int snd_vx_resume(struct vx_core *chip)
+{
+ int i, err;
+
+ chip->chip_status &= ~VX_STAT_CHIP_INIT;
+
+ for (i = 0; i < 4; i++) {
+ if (! chip->firmware[i])
+ continue;
+ err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
+ if (err < 0) {
+ snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i);
+ return -EIO;
+ }
+ }
+
+ chip->chip_status |= VX_STAT_CHIP_INIT;
+ chip->chip_status &= ~VX_STAT_IN_SUSPEND;
+
+ snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
+ return 0;
+}
+
+EXPORT_SYMBOL(snd_vx_resume);
+#endif
+
+/**
+ * snd_vx_create - constructor for struct vx_core
+ * @card: card instance
+ * @hw: hardware specific record
+ * @ops: VX ops pointer
+ * @extra_size: extra byte size to allocate appending to chip
+ *
+ * this function allocates the instance and prepare for the hardware
+ * initialization.
+ *
+ * return the instance pointer if successful, NULL in error.
+ */
+struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw,
+ struct snd_vx_ops *ops,
+ int extra_size)
+{
+ struct vx_core *chip;
+
+ if (snd_BUG_ON(!card || !hw || !ops))
+ return NULL;
+
+ chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL);
+ if (! chip) {
+ snd_printk(KERN_ERR "vx_core: no memory\n");
+ return NULL;
+ }
+ mutex_init(&chip->lock);
+ chip->irq = -1;
+ chip->hw = hw;
+ chip->type = hw->type;
+ chip->ops = ops;
+ mutex_init(&chip->mixer_mutex);
+
+ chip->card = card;
+ card->private_data = chip;
+ strcpy(card->driver, hw->name);
+ sprintf(card->shortname, "Digigram %s", hw->name);
+
+ vx_proc_init(chip);
+
+ return chip;
+}
+
+EXPORT_SYMBOL(snd_vx_create);
+
+/*
+ * module entries
+ */
+static int __init alsa_vx_core_init(void)
+{
+ return 0;
+}
+
+static void __exit alsa_vx_core_exit(void)
+{
+}
+
+module_init(alsa_vx_core_init)
+module_exit(alsa_vx_core_exit)
Code Review / kvmfornfv.git / blobdiff