*/
-#include <sound/driver.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <linux/init.h>
44100
};
+
+/*
+ * we will allocate a single 'emergency' dbdma cmd block to use if the
+ * tx status comes up "DEAD". This happens on some PowerComputing Pmac
+ * clones, either owing to a bug in dbdma or some interaction between
+ * IDE and sound. However, this measure would deal with DEAD status if
+ * it appeared elsewhere.
+ */
+static struct pmac_dbdma emergency_dbdma;
+static int emergency_in_use;
+
+
/*
* allocate DBDMA command arrays
*/
int rate_index;
long offset;
struct pmac_stream *astr;
-
+
rec->dma_size = snd_pcm_lib_buffer_bytes(subs);
rec->period_size = snd_pcm_lib_period_bytes(subs);
rec->nperiods = rec->dma_size / rec->period_size;
case SNDRV_PCM_TRIGGER_SUSPEND:
spin_lock(&chip->reg_lock);
rec->running = 0;
- /*printk("stopped!!\n");*/
+ /*printk(KERN_DEBUG "stopped!!\n");*/
snd_pmac_dma_stop(rec);
for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
out_le16(&cp->command, DBDMA_STOP);
}
#endif
count += rec->cur_period * rec->period_size;
- /*printk("pointer=%d\n", count);*/
+ /*printk(KERN_DEBUG "pointer=%d\n", count);*/
return bytes_to_frames(subs->runtime, count);
}
/*
+ * Handle DEAD DMA transfers:
+ * if the TX status comes up "DEAD" - reported on some Power Computing machines
+ * we need to re-start the dbdma - but from a different physical start address
+ * and with a different transfer length. It would get very messy to do this
+ * with the normal dbdma_cmd blocks - we would have to re-write the buffer start
+ * addresses each time. So, we will keep a single dbdma_cmd block which can be
+ * fiddled with.
+ * When DEAD status is first reported the content of the faulted dbdma block is
+ * copied into the emergency buffer and we note that the buffer is in use.
+ * we then bump the start physical address by the amount that was successfully
+ * output before it died.
+ * On any subsequent DEAD result we just do the bump-ups (we know that we are
+ * already using the emergency dbdma_cmd).
+ * CHECK: this just tries to "do it". It is possible that we should abandon
+ * xfers when the number of residual bytes gets below a certain value - I can
+ * see that this might cause a loop-forever if a too small transfer causes
+ * DEAD status. However this is a TODO for now - we'll see what gets reported.
+ * When we get a successful transfer result with the emergency buffer we just
+ * pretend that it completed using the original dmdma_cmd and carry on. The
+ * 'next_cmd' field will already point back to the original loop of blocks.
+ */
+static inline void snd_pmac_pcm_dead_xfer(struct pmac_stream *rec,
+ volatile struct dbdma_cmd __iomem *cp)
+{
+ unsigned short req, res ;
+ unsigned int phy ;
+
+ /* printk(KERN_WARNING "snd-powermac: DMA died - patching it up!\n"); */
+
+ /* to clear DEAD status we must first clear RUN
+ set it to quiescent to be on the safe side */
+ (void)in_le32(&rec->dma->status);
+ out_le32(&rec->dma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
+
+ if (!emergency_in_use) { /* new problem */
+ memcpy((void *)emergency_dbdma.cmds, (void *)cp,
+ sizeof(struct dbdma_cmd));
+ emergency_in_use = 1;
+ st_le16(&cp->xfer_status, 0);
+ st_le16(&cp->req_count, rec->period_size);
+ cp = emergency_dbdma.cmds;
+ }
+
+ /* now bump the values to reflect the amount
+ we haven't yet shifted */
+ req = ld_le16(&cp->req_count);
+ res = ld_le16(&cp->res_count);
+ phy = ld_le32(&cp->phy_addr);
+ phy += (req - res);
+ st_le16(&cp->req_count, res);
+ st_le16(&cp->res_count, 0);
+ st_le16(&cp->xfer_status, 0);
+ st_le32(&cp->phy_addr, phy);
+
+ st_le32(&cp->cmd_dep, rec->cmd.addr
+ + sizeof(struct dbdma_cmd)*((rec->cur_period+1)%rec->nperiods));
+
+ st_le16(&cp->command, OUTPUT_MORE | BR_ALWAYS | INTR_ALWAYS);
+
+ /* point at our patched up command block */
+ out_le32(&rec->dma->cmdptr, emergency_dbdma.addr);
+
+ /* we must re-start the controller */
+ (void)in_le32(&rec->dma->status);
+ /* should complete clearing the DEAD status */
+ out_le32(&rec->dma->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
+}
+
+/*
* update playback/capture pointer from interrupts
*/
static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec)
spin_lock(&chip->reg_lock);
if (rec->running) {
- cp = &rec->cmd.cmds[rec->cur_period];
for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */
+
+ if (emergency_in_use) /* already using DEAD xfer? */
+ cp = emergency_dbdma.cmds;
+ else
+ cp = &rec->cmd.cmds[rec->cur_period];
+
stat = ld_le16(&cp->xfer_status);
+
+ if (stat & DEAD) {
+ snd_pmac_pcm_dead_xfer(rec, cp);
+ break; /* this block is still going */
+ }
+
+ if (emergency_in_use)
+ emergency_in_use = 0 ; /* done that */
+
if (! (stat & ACTIVE))
break;
- /*printk("update frag %d\n", rec->cur_period);*/
+
+ /*printk(KERN_DEBUG "update frag %d\n", rec->cur_period);*/
st_le16(&cp->xfer_status, 0);
st_le16(&cp->req_count, rec->period_size);
/*st_le16(&cp->res_count, 0);*/
rec->cur_period++;
if (rec->cur_period >= rec->nperiods) {
rec->cur_period = 0;
- cp = rec->cmd.cmds;
- } else
- cp++;
+ }
+
spin_unlock(&chip->reg_lock);
snd_pcm_period_elapsed(rec->substream);
spin_lock(&chip->reg_lock);
struct snd_pcm_substream *subs)
{
struct snd_pcm_runtime *runtime = subs->runtime;
- int i, j, fflags;
- static int typical_freqs[] = {
- 44100,
- 22050,
- 11025,
- 0,
- };
- static int typical_freq_flags[] = {
- SNDRV_PCM_RATE_44100,
- SNDRV_PCM_RATE_22050,
- SNDRV_PCM_RATE_11025,
- 0,
- };
+ int i;
/* look up frequency table and fill bit mask */
runtime->hw.rates = 0;
- fflags = chip->freqs_ok;
- for (i = 0; typical_freqs[i]; i++) {
- for (j = 0; j < chip->num_freqs; j++) {
- if ((chip->freqs_ok & (1 << j)) &&
- chip->freq_table[j] == typical_freqs[i]) {
- runtime->hw.rates |= typical_freq_flags[i];
- fflags &= ~(1 << j);
- break;
- }
- }
- }
- if (fflags) /* rest */
- runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
+ for (i = 0; i < chip->num_freqs; i++)
+ if (chip->freqs_ok & (1 << i))
+ runtime->hw.rates |=
+ snd_pcm_rate_to_rate_bit(chip->freq_table[i]);
/* check for minimum and maximum rates */
for (i = 0; i < chip->num_freqs; i++) {
runtime->hw.periods_max = rec->cmd.size - 1;
- if (chip->can_duplex)
- snd_pcm_set_sync(subs);
-
/* constraints to fix choppy sound */
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
return 0;
/* reset constraints */
astr->cur_freqs = chip->freqs_ok;
astr->cur_formats = chip->formats_ok;
-
+
return 0;
}
.pointer = snd_pmac_capture_pointer,
};
-int __init snd_pmac_pcm_new(struct snd_pmac *chip)
+int __devinit snd_pmac_pcm_new(struct snd_pmac *chip)
{
struct snd_pcm *pcm;
int err;
struct snd_pmac *chip = devid;
int ctrl = in_le32(&chip->awacs->control);
- /*printk("pmac: control interrupt.. 0x%x\n", ctrl);*/
+ /*printk(KERN_DEBUG "pmac: control interrupt.. 0x%x\n", ctrl);*/
if (ctrl & MASK_PORTCHG) {
/* do something when headphone is plugged/unplugged? */
if (chip->update_automute)
snd_pmac_dbdma_free(chip, &chip->playback.cmd);
snd_pmac_dbdma_free(chip, &chip->capture.cmd);
snd_pmac_dbdma_free(chip, &chip->extra_dma);
+ snd_pmac_dbdma_free(chip, &emergency_dbdma);
if (chip->macio_base)
iounmap(chip->macio_base);
if (chip->latch_base)
* check the machine support byteswap (little-endian)
*/
-static void __init detect_byte_swap(struct snd_pmac *chip)
+static void __devinit detect_byte_swap(struct snd_pmac *chip)
{
struct device_node *mio;
/*
* detect a sound chip
*/
-static int __init snd_pmac_detect(struct snd_pmac *chip)
+static int __devinit snd_pmac_detect(struct snd_pmac *chip)
{
struct device_node *sound;
struct device_node *dn;
}
if (of_device_is_compatible(sound, "tumbler")) {
chip->model = PMAC_TUMBLER;
- chip->can_capture = 0; /* no capture */
+ chip->can_capture = machine_is_compatible("PowerMac4,2")
+ || machine_is_compatible("PowerBook4,1");
chip->can_duplex = 0;
// chip->can_byte_swap = 0; /* FIXME: check this */
chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
{
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
if (ucontrol->value.integer.value[0] != chip->auto_mute) {
- chip->auto_mute = ucontrol->value.integer.value[0];
+ chip->auto_mute = !!ucontrol->value.integer.value[0];
if (chip->update_automute)
chip->update_automute(chip, 1);
return 1;
return 0;
}
-static struct snd_kcontrol_new auto_mute_controls[] __initdata = {
+static struct snd_kcontrol_new auto_mute_controls[] __devinitdata = {
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Auto Mute Switch",
.info = snd_pmac_boolean_mono_info,
},
};
-int __init snd_pmac_add_automute(struct snd_pmac *chip)
+int __devinit snd_pmac_add_automute(struct snd_pmac *chip)
{
int err;
chip->auto_mute = 1;
/*
* create and detect a pmac chip record
*/
-int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
+int __devinit snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
{
struct snd_pmac *chip;
struct device_node *np;
if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
- snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0) {
+ snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0 ||
+ snd_pmac_dbdma_alloc(chip, &emergency_dbdma, 2) < 0) {
err = -ENOMEM;
goto __error;
}
snd_pmac_sound_feature(chip, 1);
- /* reset */
- if (chip->model == PMAC_AWACS)
- out_le32(&chip->awacs->control, 0x11);
+ /* reset & enable interrupts */
+ if (chip->model <= PMAC_BURGUNDY)
+ out_le32(&chip->awacs->control, chip->control_mask);
/* Powerbooks have odd ways of enabling inputs such as
an expansion-bay CD or sound from an internal modem
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff