diff options
Diffstat (limited to 'sound/drivers/vx/vx_core.c')
| -rw-r--r-- | sound/drivers/vx/vx_core.c | 817 |
1 files changed, 817 insertions, 0 deletions
diff --git a/sound/drivers/vx/vx_core.c b/sound/drivers/vx/vx_core.c new file mode 100644 index 000000000..04368dd59 --- /dev/null +++ b/sound/drivers/vx/vx_core.c @@ -0,0 +1,817 @@ +/* + * 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(KERN_CONT "0x%06x ", rmh->Cmd[i]); + printk(KERN_CONT "\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) + 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); |