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linux/sound/pci/lola/lola.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Support for Digigram Lola PCI-e boards
*
* Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include "lola.h"
/* Standard options */
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Digigram Lola driver.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Digigram Lola driver.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Digigram Lola driver.");
/* Lola-specific options */
/* for instance use always max granularity which is compatible
* with all sample rates
*/
static int granularity[SNDRV_CARDS] = {
[0 ... (SNDRV_CARDS - 1)] = LOLA_GRANULARITY_MAX
};
/* below a sample_rate of 16kHz the analogue audio quality is NOT excellent */
static int sample_rate_min[SNDRV_CARDS] = {
[0 ... (SNDRV_CARDS - 1) ] = 16000
};
module_param_array(granularity, int, NULL, 0444);
MODULE_PARM_DESC(granularity, "Granularity value");
module_param_array(sample_rate_min, int, NULL, 0444);
MODULE_PARM_DESC(sample_rate_min, "Minimal sample rate");
/*
*/
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Digigram, Lola}}");
MODULE_DESCRIPTION("Digigram Lola driver");
MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
#ifdef CONFIG_SND_DEBUG_VERBOSE
static int debug;
module_param(debug, int, 0644);
#define verbose_debug(fmt, args...) \
do { if (debug > 1) pr_debug(SFX fmt, ##args); } while (0)
#else
#define verbose_debug(fmt, args...)
#endif
/*
* pseudo-codec read/write via CORB/RIRB
*/
static int corb_send_verb(struct lola *chip, unsigned int nid,
unsigned int verb, unsigned int data,
unsigned int extdata)
{
unsigned long flags;
int ret = -EIO;
chip->last_cmd_nid = nid;
chip->last_verb = verb;
chip->last_data = data;
chip->last_extdata = extdata;
data |= (nid << 20) | (verb << 8);
spin_lock_irqsave(&chip->reg_lock, flags);
if (chip->rirb.cmds < LOLA_CORB_ENTRIES - 1) {
unsigned int wp = chip->corb.wp + 1;
wp %= LOLA_CORB_ENTRIES;
chip->corb.wp = wp;
chip->corb.buf[wp * 2] = cpu_to_le32(data);
chip->corb.buf[wp * 2 + 1] = cpu_to_le32(extdata);
lola_writew(chip, BAR0, CORBWP, wp);
chip->rirb.cmds++;
smp_wmb();
ret = 0;
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
return ret;
}
static void lola_queue_unsol_event(struct lola *chip, unsigned int res,
unsigned int res_ex)
{
lola_update_ext_clock_freq(chip, res);
}
/* retrieve RIRB entry - called from interrupt handler */
static void lola_update_rirb(struct lola *chip)
{
unsigned int rp, wp;
u32 res, res_ex;
wp = lola_readw(chip, BAR0, RIRBWP);
if (wp == chip->rirb.wp)
return;
chip->rirb.wp = wp;
while (chip->rirb.rp != wp) {
chip->rirb.rp++;
chip->rirb.rp %= LOLA_CORB_ENTRIES;
rp = chip->rirb.rp << 1; /* an RIRB entry is 8-bytes */
res_ex = le32_to_cpu(chip->rirb.buf[rp + 1]);
res = le32_to_cpu(chip->rirb.buf[rp]);
if (res_ex & LOLA_RIRB_EX_UNSOL_EV)
lola_queue_unsol_event(chip, res, res_ex);
else if (chip->rirb.cmds) {
chip->res = res;
chip->res_ex = res_ex;
smp_wmb();
chip->rirb.cmds--;
}
}
}
static int rirb_get_response(struct lola *chip, unsigned int *val,
unsigned int *extval)
{
unsigned long timeout;
again:
timeout = jiffies + msecs_to_jiffies(1000);
for (;;) {
if (chip->polling_mode) {
spin_lock_irq(&chip->reg_lock);
lola_update_rirb(chip);
spin_unlock_irq(&chip->reg_lock);
}
if (!chip->rirb.cmds) {
*val = chip->res;
if (extval)
*extval = chip->res_ex;
verbose_debug("get_response: %x, %x\n",
chip->res, chip->res_ex);
if (chip->res_ex & LOLA_RIRB_EX_ERROR) {
dev_warn(chip->card->dev, "RIRB ERROR: "
"NID=%x, verb=%x, data=%x, ext=%x\n",
chip->last_cmd_nid,
chip->last_verb, chip->last_data,
chip->last_extdata);
return -EIO;
}
return 0;
}
if (time_after(jiffies, timeout))
break;
udelay(20);
cond_resched();
}
dev_warn(chip->card->dev, "RIRB response error\n");
if (!chip->polling_mode) {
dev_warn(chip->card->dev, "switching to polling mode\n");
chip->polling_mode = 1;
goto again;
}
return -EIO;
}
/* aynchronous write of a codec verb with data */
int lola_codec_write(struct lola *chip, unsigned int nid, unsigned int verb,
unsigned int data, unsigned int extdata)
{
verbose_debug("codec_write NID=%x, verb=%x, data=%x, ext=%x\n",
nid, verb, data, extdata);
return corb_send_verb(chip, nid, verb, data, extdata);
}
/* write a codec verb with data and read the returned status */
int lola_codec_read(struct lola *chip, unsigned int nid, unsigned int verb,
unsigned int data, unsigned int extdata,
unsigned int *val, unsigned int *extval)
{
int err;
verbose_debug("codec_read NID=%x, verb=%x, data=%x, ext=%x\n",
nid, verb, data, extdata);
err = corb_send_verb(chip, nid, verb, data, extdata);
if (err < 0)
return err;
err = rirb_get_response(chip, val, extval);
return err;
}
/* flush all pending codec writes */
int lola_codec_flush(struct lola *chip)
{
unsigned int tmp;
return rirb_get_response(chip, &tmp, NULL);
}
/*
* interrupt handler
*/
static irqreturn_t lola_interrupt(int irq, void *dev_id)
{
struct lola *chip = dev_id;
unsigned int notify_ins, notify_outs, error_ins, error_outs;
int handled = 0;
int i;
notify_ins = notify_outs = error_ins = error_outs = 0;
spin_lock(&chip->reg_lock);
for (;;) {
unsigned int status, in_sts, out_sts;
unsigned int reg;
status = lola_readl(chip, BAR1, DINTSTS);
if (!status || status == -1)
break;
in_sts = lola_readl(chip, BAR1, DIINTSTS);
out_sts = lola_readl(chip, BAR1, DOINTSTS);
/* clear Input Interrupts */
for (i = 0; in_sts && i < chip->pcm[CAPT].num_streams; i++) {
if (!(in_sts & (1 << i)))
continue;
in_sts &= ~(1 << i);
reg = lola_dsd_read(chip, i, STS);
if (reg & LOLA_DSD_STS_DESE) /* error */
error_ins |= (1 << i);
if (reg & LOLA_DSD_STS_BCIS) /* notify */
notify_ins |= (1 << i);
/* clear */
lola_dsd_write(chip, i, STS, reg);
}
/* clear Output Interrupts */
for (i = 0; out_sts && i < chip->pcm[PLAY].num_streams; i++) {
if (!(out_sts & (1 << i)))
continue;
out_sts &= ~(1 << i);
reg = lola_dsd_read(chip, i + MAX_STREAM_IN_COUNT, STS);
if (reg & LOLA_DSD_STS_DESE) /* error */
error_outs |= (1 << i);
if (reg & LOLA_DSD_STS_BCIS) /* notify */
notify_outs |= (1 << i);
lola_dsd_write(chip, i + MAX_STREAM_IN_COUNT, STS, reg);
}
if (status & LOLA_DINT_CTRL) {
unsigned char rbsts; /* ring status is byte access */
rbsts = lola_readb(chip, BAR0, RIRBSTS);
rbsts &= LOLA_RIRB_INT_MASK;
if (rbsts)
lola_writeb(chip, BAR0, RIRBSTS, rbsts);
rbsts = lola_readb(chip, BAR0, CORBSTS);
rbsts &= LOLA_CORB_INT_MASK;
if (rbsts)
lola_writeb(chip, BAR0, CORBSTS, rbsts);
lola_update_rirb(chip);
}
if (status & (LOLA_DINT_FIFOERR | LOLA_DINT_MUERR)) {
/* clear global fifo error interrupt */
lola_writel(chip, BAR1, DINTSTS,
(status & (LOLA_DINT_FIFOERR | LOLA_DINT_MUERR)));
}
handled = 1;
}
spin_unlock(&chip->reg_lock);
lola_pcm_update(chip, &chip->pcm[CAPT], notify_ins);
lola_pcm_update(chip, &chip->pcm[PLAY], notify_outs);
return IRQ_RETVAL(handled);
}
/*
* controller
*/
static int reset_controller(struct lola *chip)
{
unsigned int gctl = lola_readl(chip, BAR0, GCTL);
unsigned long end_time;
if (gctl) {
/* to be sure */
lola_writel(chip, BAR1, BOARD_MODE, 0);
return 0;
}
chip->cold_reset = 1;
lola_writel(chip, BAR0, GCTL, LOLA_GCTL_RESET);
end_time = jiffies + msecs_to_jiffies(200);
do {
msleep(1);
gctl = lola_readl(chip, BAR0, GCTL);
if (gctl)
break;
} while (time_before(jiffies, end_time));
if (!gctl) {
dev_err(chip->card->dev, "cannot reset controller\n");
return -EIO;
}
return 0;
}
static void lola_irq_enable(struct lola *chip)
{
unsigned int val;
/* enalbe all I/O streams */
val = (1 << chip->pcm[PLAY].num_streams) - 1;
lola_writel(chip, BAR1, DOINTCTL, val);
val = (1 << chip->pcm[CAPT].num_streams) - 1;
lola_writel(chip, BAR1, DIINTCTL, val);
/* enable global irqs */
val = LOLA_DINT_GLOBAL | LOLA_DINT_CTRL | LOLA_DINT_FIFOERR |
LOLA_DINT_MUERR;
lola_writel(chip, BAR1, DINTCTL, val);
}
static void lola_irq_disable(struct lola *chip)
{
lola_writel(chip, BAR1, DINTCTL, 0);
lola_writel(chip, BAR1, DIINTCTL, 0);
lola_writel(chip, BAR1, DOINTCTL, 0);
}
static int setup_corb_rirb(struct lola *chip)
{
int err;
unsigned char tmp;
unsigned long end_time;
err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
&chip->pci->dev,
PAGE_SIZE, &chip->rb);
if (err < 0)
return err;
chip->corb.addr = chip->rb.addr;
chip->corb.buf = (__le32 *)chip->rb.area;
chip->rirb.addr = chip->rb.addr + 2048;
chip->rirb.buf = (__le32 *)(chip->rb.area + 2048);
/* disable ringbuffer DMAs */
lola_writeb(chip, BAR0, RIRBCTL, 0);
lola_writeb(chip, BAR0, CORBCTL, 0);
end_time = jiffies + msecs_to_jiffies(200);
do {
if (!lola_readb(chip, BAR0, RIRBCTL) &&
!lola_readb(chip, BAR0, CORBCTL))
break;
msleep(1);
} while (time_before(jiffies, end_time));
/* CORB set up */
lola_writel(chip, BAR0, CORBLBASE, (u32)chip->corb.addr);
lola_writel(chip, BAR0, CORBUBASE, upper_32_bits(chip->corb.addr));
/* set the corb size to 256 entries */
lola_writeb(chip, BAR0, CORBSIZE, 0x02);
/* set the corb write pointer to 0 */
lola_writew(chip, BAR0, CORBWP, 0);
/* reset the corb hw read pointer */
lola_writew(chip, BAR0, CORBRP, LOLA_RBRWP_CLR);
/* enable corb dma */
lola_writeb(chip, BAR0, CORBCTL, LOLA_RBCTL_DMA_EN);
/* clear flags if set */
tmp = lola_readb(chip, BAR0, CORBSTS) & LOLA_CORB_INT_MASK;
if (tmp)
lola_writeb(chip, BAR0, CORBSTS, tmp);
chip->corb.wp = 0;
/* RIRB set up */
lola_writel(chip, BAR0, RIRBLBASE, (u32)chip->rirb.addr);
lola_writel(chip, BAR0, RIRBUBASE, upper_32_bits(chip->rirb.addr));
/* set the rirb size to 256 entries */
lola_writeb(chip, BAR0, RIRBSIZE, 0x02);
/* reset the rirb hw write pointer */
lola_writew(chip, BAR0, RIRBWP, LOLA_RBRWP_CLR);
/* set N=1, get RIRB response interrupt for new entry */
lola_writew(chip, BAR0, RINTCNT, 1);
/* enable rirb dma and response irq */
lola_writeb(chip, BAR0, RIRBCTL, LOLA_RBCTL_DMA_EN | LOLA_RBCTL_IRQ_EN);
/* clear flags if set */
tmp = lola_readb(chip, BAR0, RIRBSTS) & LOLA_RIRB_INT_MASK;
if (tmp)
lola_writeb(chip, BAR0, RIRBSTS, tmp);
chip->rirb.rp = chip->rirb.cmds = 0;
return 0;
}
static void stop_corb_rirb(struct lola *chip)
{
/* disable ringbuffer DMAs */
lola_writeb(chip, BAR0, RIRBCTL, 0);
lola_writeb(chip, BAR0, CORBCTL, 0);
}
static void lola_reset_setups(struct lola *chip)
{
/* update the granularity */
lola_set_granularity(chip, chip->granularity, true);
/* update the sample clock */
lola_set_clock_index(chip, chip->clock.cur_index);
/* enable unsolicited events of the clock widget */
lola_enable_clock_events(chip);
/* update the analog gains */
lola_setup_all_analog_gains(chip, CAPT, false); /* input, update */
/* update SRC configuration if applicable */
lola_set_src_config(chip, chip->input_src_mask, false);
/* update the analog outputs */
lola_setup_all_analog_gains(chip, PLAY, false); /* output, update */
}
static int lola_parse_tree(struct lola *chip)
{
unsigned int val;
int nid, err;
err = lola_read_param(chip, 0, LOLA_PAR_VENDOR_ID, &val);
if (err < 0) {
dev_err(chip->card->dev, "Can't read VENDOR_ID\n");
return err;
}
val >>= 16;
if (val != 0x1369) {
dev_err(chip->card->dev, "Unknown codec vendor 0x%x\n", val);
return -EINVAL;
}
err = lola_read_param(chip, 1, LOLA_PAR_FUNCTION_TYPE, &val);
if (err < 0) {
dev_err(chip->card->dev, "Can't read FUNCTION_TYPE\n");
return err;
}
if (val != 1) {
dev_err(chip->card->dev, "Unknown function type %d\n", val);
return -EINVAL;
}
err = lola_read_param(chip, 1, LOLA_PAR_SPECIFIC_CAPS, &val);
if (err < 0) {
dev_err(chip->card->dev, "Can't read SPECCAPS\n");
return err;
}
chip->lola_caps = val;
chip->pin[CAPT].num_pins = LOLA_AFG_INPUT_PIN_COUNT(chip->lola_caps);
chip->pin[PLAY].num_pins = LOLA_AFG_OUTPUT_PIN_COUNT(chip->lola_caps);
dev_dbg(chip->card->dev, "speccaps=0x%x, pins in=%d, out=%d\n",
chip->lola_caps,
chip->pin[CAPT].num_pins, chip->pin[PLAY].num_pins);
if (chip->pin[CAPT].num_pins > MAX_AUDIO_INOUT_COUNT ||
chip->pin[PLAY].num_pins > MAX_AUDIO_INOUT_COUNT) {
dev_err(chip->card->dev, "Invalid Lola-spec caps 0x%x\n", val);
return -EINVAL;
}
nid = 0x02;
err = lola_init_pcm(chip, CAPT, &nid);
if (err < 0)
return err;
err = lola_init_pcm(chip, PLAY, &nid);
if (err < 0)
return err;
err = lola_init_pins(chip, CAPT, &nid);
if (err < 0)
return err;
err = lola_init_pins(chip, PLAY, &nid);
if (err < 0)
return err;
if (LOLA_AFG_CLOCK_WIDGET_PRESENT(chip->lola_caps)) {
err = lola_init_clock_widget(chip, nid);
if (err < 0)
return err;
nid++;
}
if (LOLA_AFG_MIXER_WIDGET_PRESENT(chip->lola_caps)) {
err = lola_init_mixer_widget(chip, nid);
if (err < 0)
return err;
nid++;
}
/* enable unsolicited events of the clock widget */
err = lola_enable_clock_events(chip);
if (err < 0)
return err;
/* if last ResetController was not a ColdReset, we don't know
* the state of the card; initialize here again
*/
if (!chip->cold_reset) {
lola_reset_setups(chip);
chip->cold_reset = 1;
} else {
/* set the granularity if it is not the default */
if (chip->granularity != LOLA_GRANULARITY_MIN)
lola_set_granularity(chip, chip->granularity, true);
}
return 0;
}
static void lola_stop_hw(struct lola *chip)
{
stop_corb_rirb(chip);
lola_irq_disable(chip);
}
static void lola_free(struct lola *chip)
{
if (chip->initialized)
lola_stop_hw(chip);
lola_free_pcm(chip);
lola_free_mixer(chip);
if (chip->irq >= 0)
free_irq(chip->irq, (void *)chip);
iounmap(chip->bar[0].remap_addr);
iounmap(chip->bar[1].remap_addr);
if (chip->rb.area)
snd_dma_free_pages(&chip->rb);
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
}
static int lola_dev_free(struct snd_device *device)
{
lola_free(device->device_data);
return 0;
}
static int lola_create(struct snd_card *card, struct pci_dev *pci,
int dev, struct lola **rchip)
{
struct lola *chip;
int err;
unsigned int dever;
static const struct snd_device_ops ops = {
.dev_free = lola_dev_free,
};
*rchip = NULL;
err = pci_enable_device(pci);
if (err < 0)
return err;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (!chip) {
pci_disable_device(pci);
return -ENOMEM;
}
spin_lock_init(&chip->reg_lock);
mutex_init(&chip->open_mutex);
chip->card = card;
chip->pci = pci;
chip->irq = -1;
chip->granularity = granularity[dev];
switch (chip->granularity) {
case 8:
chip->sample_rate_max = 48000;
break;
case 16:
chip->sample_rate_max = 96000;
break;
case 32:
chip->sample_rate_max = 192000;
break;
default:
dev_warn(chip->card->dev,
"Invalid granularity %d, reset to %d\n",
chip->granularity, LOLA_GRANULARITY_MAX);
chip->granularity = LOLA_GRANULARITY_MAX;
chip->sample_rate_max = 192000;
break;
}
chip->sample_rate_min = sample_rate_min[dev];
if (chip->sample_rate_min > chip->sample_rate_max) {
dev_warn(chip->card->dev,
"Invalid sample_rate_min %d, reset to 16000\n",
chip->sample_rate_min);
chip->sample_rate_min = 16000;
}
err = pci_request_regions(pci, DRVNAME);
if (err < 0) {
kfree(chip);
pci_disable_device(pci);
return err;
}
chip->bar[0].addr = pci_resource_start(pci, 0);
chip->bar[0].remap_addr = pci_ioremap_bar(pci, 0);
chip->bar[1].addr = pci_resource_start(pci, 2);
chip->bar[1].remap_addr = pci_ioremap_bar(pci, 2);
if (!chip->bar[0].remap_addr || !chip->bar[1].remap_addr) {
dev_err(chip->card->dev, "ioremap error\n");
err = -ENXIO;
goto errout;
}
pci_set_master(pci);
err = reset_controller(chip);
if (err < 0)
goto errout;
if (request_irq(pci->irq, lola_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
dev_err(chip->card->dev, "unable to grab IRQ %d\n", pci->irq);
err = -EBUSY;
goto errout;
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
dever = lola_readl(chip, BAR1, DEVER);
chip->pcm[CAPT].num_streams = (dever >> 0) & 0x3ff;
chip->pcm[PLAY].num_streams = (dever >> 10) & 0x3ff;
chip->version = (dever >> 24) & 0xff;
dev_dbg(chip->card->dev, "streams in=%d, out=%d, version=0x%x\n",
chip->pcm[CAPT].num_streams, chip->pcm[PLAY].num_streams,
chip->version);
/* Test LOLA_BAR1_DEVER */
if (chip->pcm[CAPT].num_streams > MAX_STREAM_IN_COUNT ||
chip->pcm[PLAY].num_streams > MAX_STREAM_OUT_COUNT ||
(!chip->pcm[CAPT].num_streams &&
!chip->pcm[PLAY].num_streams)) {
dev_err(chip->card->dev, "invalid DEVER = %x\n", dever);
err = -EINVAL;
goto errout;
}
err = setup_corb_rirb(chip);
if (err < 0)
goto errout;
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
if (err < 0) {
dev_err(chip->card->dev, "Error creating device [card]!\n");
goto errout;
}
strcpy(card->driver, "Lola");
strlcpy(card->shortname, "Digigram Lola", sizeof(card->shortname));
snprintf(card->longname, sizeof(card->longname),
"%s at 0x%lx irq %i",
card->shortname, chip->bar[0].addr, chip->irq);
strcpy(card->mixername, card->shortname);
lola_irq_enable(chip);
chip->initialized = 1;
*rchip = chip;
return 0;
errout:
lola_free(chip);
return err;
}
static int lola_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
struct snd_card *card;
struct lola *chip;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
0, &card);
if (err < 0) {
dev_err(&pci->dev, "Error creating card!\n");
return err;
}
err = lola_create(card, pci, dev, &chip);
if (err < 0)
goto out_free;
card->private_data = chip;
err = lola_parse_tree(chip);
if (err < 0)
goto out_free;
err = lola_create_pcm(chip);
if (err < 0)
goto out_free;
err = lola_create_mixer(chip);
if (err < 0)
goto out_free;
lola_proc_debug_new(chip);
err = snd_card_register(card);
if (err < 0)
goto out_free;
pci_set_drvdata(pci, card);
dev++;
return err;
out_free:
snd_card_free(card);
return err;
}
static void lola_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
}
/* PCI IDs */
static const struct pci_device_id lola_ids[] = {
{ PCI_VDEVICE(DIGIGRAM, 0x0001) },
{ 0, }
};
MODULE_DEVICE_TABLE(pci, lola_ids);
/* pci_driver definition */
static struct pci_driver lola_driver = {
.name = KBUILD_MODNAME,
.id_table = lola_ids,
.probe = lola_probe,
.remove = lola_remove,
};
module_pci_driver(lola_driver);
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