--- /dev/null
+/*
+ * PMac DBDMA lowlevel functions
+ *
+ * Copyright (c) by Takashi Iwai <tiwai@suse.de>
+ * code based on dmasound.c.
+ *
+ * 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/io.h>
+#include <asm/irq.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <sound/core.h>
+#include "pmac.h"
+#include <sound/pcm_params.h>
+#include <asm/pmac_feature.h>
+#include <asm/pci-bridge.h>
+
+
+/* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */
+static int awacs_freqs[8] = {
+ 44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
+};
+/* fixed frequency table for tumbler */
+static int tumbler_freqs[1] = {
+ 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
+ */
+static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size)
+{
+ unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1);
+
+ rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize,
+ &rec->dma_base, GFP_KERNEL);
+ if (rec->space == NULL)
+ return -ENOMEM;
+ rec->size = size;
+ memset(rec->space, 0, rsize);
+ rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);
+ rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space);
+
+ return 0;
+}
+
+static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec)
+{
+ if (rec->space) {
+ unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1);
+
+ dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base);
+ }
+}
+
+
+/*
+ * pcm stuff
+ */
+
+/*
+ * look up frequency table
+ */
+
+unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate)
+{
+ int i, ok, found;
+
+ ok = rec->cur_freqs;
+ if (rate > chip->freq_table[0])
+ return 0;
+ found = 0;
+ for (i = 0; i < chip->num_freqs; i++, ok >>= 1) {
+ if (! (ok & 1)) continue;
+ found = i;
+ if (rate >= chip->freq_table[i])
+ break;
+ }
+ return found;
+}
+
+/*
+ * check whether another stream is active
+ */
+static inline int another_stream(int stream)
+{
+ return (stream == SNDRV_PCM_STREAM_PLAYBACK) ?
+ SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
+}
+
+/*
+ * allocate buffers
+ */
+static int snd_pmac_pcm_hw_params(struct snd_pcm_substream *subs,
+ struct snd_pcm_hw_params *hw_params)
+{
+ return snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw_params));
+}
+
+/*
+ * release buffers
+ */
+static int snd_pmac_pcm_hw_free(struct snd_pcm_substream *subs)
+{
+ snd_pcm_lib_free_pages(subs);
+ return 0;
+}
+
+/*
+ * get a stream of the opposite direction
+ */
+static struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *chip, int stream)
+{
+ switch (stream) {
+ case SNDRV_PCM_STREAM_PLAYBACK:
+ return &chip->playback;
+ case SNDRV_PCM_STREAM_CAPTURE:
+ return &chip->capture;
+ default:
+ snd_BUG();
+ return NULL;
+ }
+}
+
+/*
+ * wait while run status is on
+ */
+static inline void
+snd_pmac_wait_ack(struct pmac_stream *rec)
+{
+ int timeout = 50000;
+ while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0)
+ udelay(1);
+}
+
+/*
+ * set the format and rate to the chip.
+ * call the lowlevel function if defined (e.g. for AWACS).
+ */
+static void snd_pmac_pcm_set_format(struct snd_pmac *chip)
+{
+ /* set up frequency and format */
+ out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8));
+ out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0);
+ if (chip->set_format)
+ chip->set_format(chip);
+}
+
+/*
+ * stop the DMA transfer
+ */
+static inline void snd_pmac_dma_stop(struct pmac_stream *rec)
+{
+ out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
+ snd_pmac_wait_ack(rec);
+}
+
+/*
+ * set the command pointer address
+ */
+static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd)
+{
+ out_le32(&rec->dma->cmdptr, cmd->addr);
+}
+
+/*
+ * start the DMA
+ */
+static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status)
+{
+ out_le32(&rec->dma->control, status | (status << 16));
+}
+
+
+/*
+ * prepare playback/capture stream
+ */
+static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs)
+{
+ int i;
+ volatile struct dbdma_cmd __iomem *cp;
+ struct snd_pcm_runtime *runtime = subs->runtime;
+ 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;
+ rec->cur_period = 0;
+ rate_index = snd_pmac_rate_index(chip, rec, runtime->rate);
+
+ /* set up constraints */
+ astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
+ if (! astr)
+ return -EINVAL;
+ astr->cur_freqs = 1 << rate_index;
+ astr->cur_formats = 1 << runtime->format;
+ chip->rate_index = rate_index;
+ chip->format = runtime->format;
+
+ /* We really want to execute a DMA stop command, after the AWACS
+ * is initialized.
+ * For reasons I don't understand, it stops the hissing noise
+ * common to many PowerBook G3 systems and random noise otherwise
+ * captured on iBook2's about every third time. -ReneR
+ */
+ spin_lock_irq(&chip->reg_lock);
+ snd_pmac_dma_stop(rec);
+ chip->extra_dma.cmds->command = cpu_to_le16(DBDMA_STOP);
+ snd_pmac_dma_set_command(rec, &chip->extra_dma);
+ snd_pmac_dma_run(rec, RUN);
+ spin_unlock_irq(&chip->reg_lock);
+ mdelay(5);
+ spin_lock_irq(&chip->reg_lock);
+ /* continuous DMA memory type doesn't provide the physical address,
+ * so we need to resolve the address here...
+ */
+ offset = runtime->dma_addr;
+ for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) {
+ cp->phy_addr = cpu_to_le32(offset);
+ cp->req_count = cpu_to_le16(rec->period_size);
+ /*cp->res_count = cpu_to_le16(0);*/
+ cp->xfer_status = cpu_to_le16(0);
+ offset += rec->period_size;
+ }
+ /* make loop */
+ cp->command = cpu_to_le16(DBDMA_NOP + BR_ALWAYS);
+ cp->cmd_dep = cpu_to_le32(rec->cmd.addr);
+
+ snd_pmac_dma_stop(rec);
+ snd_pmac_dma_set_command(rec, &rec->cmd);
+ spin_unlock_irq(&chip->reg_lock);
+
+ return 0;
+}
+
+
+/*
+ * PCM trigger/stop
+ */
+static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec,
+ struct snd_pcm_substream *subs, int cmd)
+{
+ volatile struct dbdma_cmd __iomem *cp;
+ int i, command;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ if (rec->running)
+ return -EBUSY;
+ command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ?
+ OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS;
+ spin_lock(&chip->reg_lock);
+ snd_pmac_beep_stop(chip);
+ snd_pmac_pcm_set_format(chip);
+ for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
+ out_le16(&cp->command, command);
+ snd_pmac_dma_set_command(rec, &rec->cmd);
+ (void)in_le32(&rec->dma->status);
+ snd_pmac_dma_run(rec, RUN|WAKE);
+ rec->running = 1;
+ spin_unlock(&chip->reg_lock);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ spin_lock(&chip->reg_lock);
+ rec->running = 0;
+ /*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);
+ spin_unlock(&chip->reg_lock);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * return the current pointer
+ */
+inline
+static snd_pcm_uframes_t snd_pmac_pcm_pointer(struct snd_pmac *chip,
+ struct pmac_stream *rec,
+ struct snd_pcm_substream *subs)
+{
+ int count = 0;
+
+#if 1 /* hmm.. how can we get the current dma pointer?? */
+ int stat;
+ volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period];
+ stat = le16_to_cpu(cp->xfer_status);
+ if (stat & (ACTIVE|DEAD)) {
+ count = in_le16(&cp->res_count);
+ if (count)
+ count = rec->period_size - count;
+ }
+#endif
+ count += rec->cur_period * rec->period_size;
+ /*printk(KERN_DEBUG "pointer=%d\n", count);*/
+ return bytes_to_frames(subs->runtime, count);
+}
+
+/*
+ * playback
+ */
+
+static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs)
+{
+ struct snd_pmac *chip = snd_pcm_substream_chip(subs);
+ return snd_pmac_pcm_prepare(chip, &chip->playback, subs);
+}
+
+static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs,
+ int cmd)
+{
+ struct snd_pmac *chip = snd_pcm_substream_chip(subs);
+ return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd);
+}
+
+static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs)
+{
+ struct snd_pmac *chip = snd_pcm_substream_chip(subs);
+ return snd_pmac_pcm_pointer(chip, &chip->playback, subs);
+}
+
+
+/*
+ * capture
+ */
+
+static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs)
+{
+ struct snd_pmac *chip = snd_pcm_substream_chip(subs);
+ return snd_pmac_pcm_prepare(chip, &chip->capture, subs);
+}
+
+static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs,
+ int cmd)
+{
+ struct snd_pmac *chip = snd_pcm_substream_chip(subs);
+ return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd);
+}
+
+static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs)
+{
+ struct snd_pmac *chip = snd_pcm_substream_chip(subs);
+ return snd_pmac_pcm_pointer(chip, &chip->capture, subs);
+}
+
+
+/*
+ * 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;
+ cp->xfer_status = cpu_to_le16(0);
+ cp->req_count = cpu_to_le16(rec->period_size);
+ cp = emergency_dbdma.cmds;
+ }
+
+ /* now bump the values to reflect the amount
+ we haven't yet shifted */
+ req = le16_to_cpu(cp->req_count);
+ res = le16_to_cpu(cp->res_count);
+ phy = le32_to_cpu(cp->phy_addr);
+ phy += (req - res);
+ cp->req_count = cpu_to_le16(res);
+ cp->res_count = cpu_to_le16(0);
+ cp->xfer_status = cpu_to_le16(0);
+ cp->phy_addr = cpu_to_le32(phy);
+
+ cp->cmd_dep = cpu_to_le32(rec->cmd.addr
+ + sizeof(struct dbdma_cmd)*((rec->cur_period+1)%rec->nperiods));
+
+ cp->command = cpu_to_le16(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)
+{
+ volatile struct dbdma_cmd __iomem *cp;
+ int c;
+ int stat;
+
+ spin_lock(&chip->reg_lock);
+ if (rec->running) {
+ 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 = le16_to_cpu(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(KERN_DEBUG "update frag %d\n", rec->cur_period);*/
+ cp->xfer_status = cpu_to_le16(0);
+ cp->req_count = cpu_to_le16(rec->period_size);
+ /*cp->res_count = cpu_to_le16(0);*/
+ rec->cur_period++;
+ if (rec->cur_period >= rec->nperiods) {
+ rec->cur_period = 0;
+ }
+
+ spin_unlock(&chip->reg_lock);
+ snd_pcm_period_elapsed(rec->substream);
+ spin_lock(&chip->reg_lock);
+ }
+ }
+ spin_unlock(&chip->reg_lock);
+}
+
+
+/*
+ * hw info
+ */
+
+static struct snd_pcm_hardware snd_pmac_playback =
+{
+ .info = (SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_RESUME),
+ .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = SNDRV_PCM_RATE_8000_44100,
+ .rate_min = 7350,
+ .rate_max = 44100,
+ .channels_min = 2,
+ .channels_max = 2,
+ .buffer_bytes_max = 131072,
+ .period_bytes_min = 256,
+ .period_bytes_max = 16384,
+ .periods_min = 3,
+ .periods_max = PMAC_MAX_FRAGS,
+};
+
+static struct snd_pcm_hardware snd_pmac_capture =
+{
+ .info = (SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_RESUME),
+ .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = SNDRV_PCM_RATE_8000_44100,
+ .rate_min = 7350,
+ .rate_max = 44100,
+ .channels_min = 2,
+ .channels_max = 2,
+ .buffer_bytes_max = 131072,
+ .period_bytes_min = 256,
+ .period_bytes_max = 16384,
+ .periods_min = 3,
+ .periods_max = PMAC_MAX_FRAGS,
+};
+
+
+#if 0 // NYI
+static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct snd_pmac *chip = rule->private;
+ struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
+ int i, freq_table[8], num_freqs;
+
+ if (! rec)
+ return -EINVAL;
+ num_freqs = 0;
+ for (i = chip->num_freqs - 1; i >= 0; i--) {
+ if (rec->cur_freqs & (1 << i))
+ freq_table[num_freqs++] = chip->freq_table[i];
+ }
+
+ return snd_interval_list(hw_param_interval(params, rule->var),
+ num_freqs, freq_table, 0);
+}
+
+static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct snd_pmac *chip = rule->private;
+ struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
+
+ if (! rec)
+ return -EINVAL;
+ return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
+ rec->cur_formats);
+}
+#endif // NYI
+
+static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec,
+ struct snd_pcm_substream *subs)
+{
+ struct snd_pcm_runtime *runtime = subs->runtime;
+ int i;
+
+ /* look up frequency table and fill bit mask */
+ runtime->hw.rates = 0;
+ 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++) {
+ if (chip->freqs_ok & (1 << i)) {
+ runtime->hw.rate_max = chip->freq_table[i];
+ break;
+ }
+ }
+ for (i = chip->num_freqs - 1; i >= 0; i--) {
+ if (chip->freqs_ok & (1 << i)) {
+ runtime->hw.rate_min = chip->freq_table[i];
+ break;
+ }
+ }
+ runtime->hw.formats = chip->formats_ok;
+ if (chip->can_capture) {
+ if (! chip->can_duplex)
+ runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX;
+ runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
+ }
+ runtime->private_data = rec;
+ rec->substream = subs;
+
+#if 0 /* FIXME: still under development.. */
+ snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ snd_pmac_hw_rule_rate, chip, rec->stream, -1);
+ snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
+ snd_pmac_hw_rule_format, chip, rec->stream, -1);
+#endif
+
+ runtime->hw.periods_max = rec->cmd.size - 1;
+
+ /* constraints to fix choppy sound */
+ snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+ return 0;
+}
+
+static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec,
+ struct snd_pcm_substream *subs)
+{
+ struct pmac_stream *astr;
+
+ snd_pmac_dma_stop(rec);
+
+ astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
+ if (! astr)
+ return -EINVAL;
+
+ /* reset constraints */
+ astr->cur_freqs = chip->freqs_ok;
+ astr->cur_formats = chip->formats_ok;
+
+ return 0;
+}
+
+static int snd_pmac_playback_open(struct snd_pcm_substream *subs)
+{
+ struct snd_pmac *chip = snd_pcm_substream_chip(subs);
+
+ subs->runtime->hw = snd_pmac_playback;
+ return snd_pmac_pcm_open(chip, &chip->playback, subs);
+}
+
+static int snd_pmac_capture_open(struct snd_pcm_substream *subs)
+{
+ struct snd_pmac *chip = snd_pcm_substream_chip(subs);
+
+ subs->runtime->hw = snd_pmac_capture;
+ return snd_pmac_pcm_open(chip, &chip->capture, subs);
+}
+
+static int snd_pmac_playback_close(struct snd_pcm_substream *subs)
+{
+ struct snd_pmac *chip = snd_pcm_substream_chip(subs);
+
+ return snd_pmac_pcm_close(chip, &chip->playback, subs);
+}
+
+static int snd_pmac_capture_close(struct snd_pcm_substream *subs)
+{
+ struct snd_pmac *chip = snd_pcm_substream_chip(subs);
+
+ return snd_pmac_pcm_close(chip, &chip->capture, subs);
+}
+
+/*
+ */
+
+static struct snd_pcm_ops snd_pmac_playback_ops = {
+ .open = snd_pmac_playback_open,
+ .close = snd_pmac_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_pmac_pcm_hw_params,
+ .hw_free = snd_pmac_pcm_hw_free,
+ .prepare = snd_pmac_playback_prepare,
+ .trigger = snd_pmac_playback_trigger,
+ .pointer = snd_pmac_playback_pointer,
+};
+
+static struct snd_pcm_ops snd_pmac_capture_ops = {
+ .open = snd_pmac_capture_open,
+ .close = snd_pmac_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_pmac_pcm_hw_params,
+ .hw_free = snd_pmac_pcm_hw_free,
+ .prepare = snd_pmac_capture_prepare,
+ .trigger = snd_pmac_capture_trigger,
+ .pointer = snd_pmac_capture_pointer,
+};
+
+int snd_pmac_pcm_new(struct snd_pmac *chip)
+{
+ struct snd_pcm *pcm;
+ int err;
+ int num_captures = 1;
+
+ if (! chip->can_capture)
+ num_captures = 0;
+ err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm);
+ if (err < 0)
+ return err;
+
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops);
+ if (chip->can_capture)
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops);
+
+ pcm->private_data = chip;
+ pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
+ strcpy(pcm->name, chip->card->shortname);
+ chip->pcm = pcm;
+
+ chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE;
+ if (chip->can_byte_swap)
+ chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE;
+
+ chip->playback.cur_formats = chip->formats_ok;
+ chip->capture.cur_formats = chip->formats_ok;
+ chip->playback.cur_freqs = chip->freqs_ok;
+ chip->capture.cur_freqs = chip->freqs_ok;
+
+ /* preallocate 64k buffer */
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+ &chip->pdev->dev,
+ 64 * 1024, 64 * 1024);
+
+ return 0;
+}
+
+
+static void snd_pmac_dbdma_reset(struct snd_pmac *chip)
+{
+ out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
+ snd_pmac_wait_ack(&chip->playback);
+ out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
+ snd_pmac_wait_ack(&chip->capture);
+}
+
+
+/*
+ * handling beep
+ */
+void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed)
+{
+ struct pmac_stream *rec = &chip->playback;
+
+ snd_pmac_dma_stop(rec);
+ chip->extra_dma.cmds->req_count = cpu_to_le16(bytes);
+ chip->extra_dma.cmds->xfer_status = cpu_to_le16(0);
+ chip->extra_dma.cmds->cmd_dep = cpu_to_le32(chip->extra_dma.addr);
+ chip->extra_dma.cmds->phy_addr = cpu_to_le32(addr);
+ chip->extra_dma.cmds->command = cpu_to_le16(OUTPUT_MORE + BR_ALWAYS);
+ out_le32(&chip->awacs->control,
+ (in_le32(&chip->awacs->control) & ~0x1f00)
+ | (speed << 8));
+ out_le32(&chip->awacs->byteswap, 0);
+ snd_pmac_dma_set_command(rec, &chip->extra_dma);
+ snd_pmac_dma_run(rec, RUN);
+}
+
+void snd_pmac_beep_dma_stop(struct snd_pmac *chip)
+{
+ snd_pmac_dma_stop(&chip->playback);
+ chip->extra_dma.cmds->command = cpu_to_le16(DBDMA_STOP);
+ snd_pmac_pcm_set_format(chip); /* reset format */
+}
+
+
+/*
+ * interrupt handlers
+ */
+static irqreturn_t
+snd_pmac_tx_intr(int irq, void *devid)
+{
+ struct snd_pmac *chip = devid;
+ snd_pmac_pcm_update(chip, &chip->playback);
+ return IRQ_HANDLED;
+}
+
+
+static irqreturn_t
+snd_pmac_rx_intr(int irq, void *devid)
+{
+ struct snd_pmac *chip = devid;
+ snd_pmac_pcm_update(chip, &chip->capture);
+ return IRQ_HANDLED;
+}
+
+
+static irqreturn_t
+snd_pmac_ctrl_intr(int irq, void *devid)
+{
+ struct snd_pmac *chip = devid;
+ int ctrl = in_le32(&chip->awacs->control);
+
+ /*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)
+ chip->update_automute(chip, 1);
+ }
+ if (ctrl & MASK_CNTLERR) {
+ int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16;
+ if (err && chip->model <= PMAC_SCREAMER)
+ snd_printk(KERN_DEBUG "error %x\n", err);
+ }
+ /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
+ out_le32(&chip->awacs->control, ctrl);
+ return IRQ_HANDLED;
+}
+
+
+/*
+ * a wrapper to feature call for compatibility
+ */
+static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable)
+{
+ if (ppc_md.feature_call)
+ ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
+}
+
+/*
+ * release resources
+ */
+
+static int snd_pmac_free(struct snd_pmac *chip)
+{
+ /* stop sounds */
+ if (chip->initialized) {
+ snd_pmac_dbdma_reset(chip);
+ /* disable interrupts from awacs interface */
+ out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff);
+ }
+
+ if (chip->node)
+ snd_pmac_sound_feature(chip, 0);
+
+ /* clean up mixer if any */
+ if (chip->mixer_free)
+ chip->mixer_free(chip);
+
+ snd_pmac_detach_beep(chip);
+
+ /* release resources */
+ if (chip->irq >= 0)
+ free_irq(chip->irq, (void*)chip);
+ if (chip->tx_irq >= 0)
+ free_irq(chip->tx_irq, (void*)chip);
+ if (chip->rx_irq >= 0)
+ free_irq(chip->rx_irq, (void*)chip);
+ 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);
+ iounmap(chip->macio_base);
+ iounmap(chip->latch_base);
+ iounmap(chip->awacs);
+ iounmap(chip->playback.dma);
+ iounmap(chip->capture.dma);
+
+ if (chip->node) {
+ int i;
+ for (i = 0; i < 3; i++) {
+ if (chip->requested & (1 << i))
+ release_mem_region(chip->rsrc[i].start,
+ resource_size(&chip->rsrc[i]));
+ }
+ }
+
+ pci_dev_put(chip->pdev);
+ of_node_put(chip->node);
+ kfree(chip);
+ return 0;
+}
+
+
+/*
+ * free the device
+ */
+static int snd_pmac_dev_free(struct snd_device *device)
+{
+ struct snd_pmac *chip = device->device_data;
+ return snd_pmac_free(chip);
+}
+
+
+/*
+ * check the machine support byteswap (little-endian)
+ */
+
+static void detect_byte_swap(struct snd_pmac *chip)
+{
+ struct device_node *mio;
+
+ /* if seems that Keylargo can't byte-swap */
+ for (mio = chip->node->parent; mio; mio = mio->parent) {
+ if (strcmp(mio->name, "mac-io") == 0) {
+ if (of_device_is_compatible(mio, "Keylargo"))
+ chip->can_byte_swap = 0;
+ break;
+ }
+ }
+
+ /* it seems the Pismo & iBook can't byte-swap in hardware. */
+ if (of_machine_is_compatible("PowerBook3,1") ||
+ of_machine_is_compatible("PowerBook2,1"))
+ chip->can_byte_swap = 0 ;
+
+ if (of_machine_is_compatible("PowerBook2,1"))
+ chip->can_duplex = 0;
+}
+
+
+/*
+ * detect a sound chip
+ */
+static int snd_pmac_detect(struct snd_pmac *chip)
+{
+ struct device_node *sound;
+ struct device_node *dn;
+ const unsigned int *prop;
+ unsigned int l;
+ struct macio_chip* macio;
+
+ if (!machine_is(powermac))
+ return -ENODEV;
+
+ chip->subframe = 0;
+ chip->revision = 0;
+ chip->freqs_ok = 0xff; /* all ok */
+ chip->model = PMAC_AWACS;
+ chip->can_byte_swap = 1;
+ chip->can_duplex = 1;
+ chip->can_capture = 1;
+ chip->num_freqs = ARRAY_SIZE(awacs_freqs);
+ chip->freq_table = awacs_freqs;
+ chip->pdev = NULL;
+
+ chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */
+
+ /* check machine type */
+ if (of_machine_is_compatible("AAPL,3400/2400")
+ || of_machine_is_compatible("AAPL,3500"))
+ chip->is_pbook_3400 = 1;
+ else if (of_machine_is_compatible("PowerBook1,1")
+ || of_machine_is_compatible("AAPL,PowerBook1998"))
+ chip->is_pbook_G3 = 1;
+ chip->node = of_find_node_by_name(NULL, "awacs");
+ sound = of_node_get(chip->node);
+
+ /*
+ * powermac G3 models have a node called "davbus"
+ * with a child called "sound".
+ */
+ if (!chip->node)
+ chip->node = of_find_node_by_name(NULL, "davbus");
+ /*
+ * if we didn't find a davbus device, try 'i2s-a' since
+ * this seems to be what iBooks have
+ */
+ if (! chip->node) {
+ chip->node = of_find_node_by_name(NULL, "i2s-a");
+ if (chip->node && chip->node->parent &&
+ chip->node->parent->parent) {
+ if (of_device_is_compatible(chip->node->parent->parent,
+ "K2-Keylargo"))
+ chip->is_k2 = 1;
+ }
+ }
+ if (! chip->node)
+ return -ENODEV;
+
+ if (!sound) {
+ for_each_node_by_name(sound, "sound")
+ if (sound->parent == chip->node)
+ break;
+ }
+ if (! sound) {
+ of_node_put(chip->node);
+ chip->node = NULL;
+ return -ENODEV;
+ }
+ prop = of_get_property(sound, "sub-frame", NULL);
+ if (prop && *prop < 16)
+ chip->subframe = *prop;
+ prop = of_get_property(sound, "layout-id", NULL);
+ if (prop) {
+ /* partly deprecate snd-powermac, for those machines
+ * that have a layout-id property for now */
+ printk(KERN_INFO "snd-powermac no longer handles any "
+ "machines with a layout-id property "
+ "in the device-tree, use snd-aoa.\n");
+ of_node_put(sound);
+ of_node_put(chip->node);
+ chip->node = NULL;
+ return -ENODEV;
+ }
+ /* This should be verified on older screamers */
+ if (of_device_is_compatible(sound, "screamer")) {
+ chip->model = PMAC_SCREAMER;
+ // chip->can_byte_swap = 0; /* FIXME: check this */
+ }
+ if (of_device_is_compatible(sound, "burgundy")) {
+ chip->model = PMAC_BURGUNDY;
+ chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
+ }
+ if (of_device_is_compatible(sound, "daca")) {
+ chip->model = PMAC_DACA;
+ chip->can_capture = 0; /* no capture */
+ chip->can_duplex = 0;
+ // chip->can_byte_swap = 0; /* FIXME: check this */
+ chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
+ }
+ if (of_device_is_compatible(sound, "tumbler")) {
+ chip->model = PMAC_TUMBLER;
+ chip->can_capture = of_machine_is_compatible("PowerMac4,2")
+ || of_machine_is_compatible("PowerBook3,2")
+ || of_machine_is_compatible("PowerBook3,3")
+ || of_machine_is_compatible("PowerBook4,1")
+ || of_machine_is_compatible("PowerBook4,2")
+ || of_machine_is_compatible("PowerBook4,3");
+ chip->can_duplex = 0;
+ // chip->can_byte_swap = 0; /* FIXME: check this */
+ chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
+ chip->freq_table = tumbler_freqs;
+ chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
+ }
+ if (of_device_is_compatible(sound, "snapper")) {
+ chip->model = PMAC_SNAPPER;
+ // chip->can_byte_swap = 0; /* FIXME: check this */
+ chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
+ chip->freq_table = tumbler_freqs;
+ chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
+ }
+ prop = of_get_property(sound, "device-id", NULL);
+ if (prop)
+ chip->device_id = *prop;
+ dn = of_find_node_by_name(NULL, "perch");
+ chip->has_iic = (dn != NULL);
+ of_node_put(dn);
+
+ /* We need the PCI device for DMA allocations, let's use a crude method
+ * for now ...
+ */
+ macio = macio_find(chip->node, macio_unknown);
+ if (macio == NULL)
+ printk(KERN_WARNING "snd-powermac: can't locate macio !\n");
+ else {
+ struct pci_dev *pdev = NULL;
+
+ for_each_pci_dev(pdev) {
+ struct device_node *np = pci_device_to_OF_node(pdev);
+ if (np && np == macio->of_node) {
+ chip->pdev = pdev;
+ break;
+ }
+ }
+ }
+ if (chip->pdev == NULL)
+ printk(KERN_WARNING "snd-powermac: can't locate macio PCI"
+ " device !\n");
+
+ detect_byte_swap(chip);
+
+ /* look for a property saying what sample rates
+ are available */
+ prop = of_get_property(sound, "sample-rates", &l);
+ if (! prop)
+ prop = of_get_property(sound, "output-frame-rates", &l);
+ if (prop) {
+ int i;
+ chip->freqs_ok = 0;
+ for (l /= sizeof(int); l > 0; --l) {
+ unsigned int r = *prop++;
+ /* Apple 'Fixed' format */
+ if (r >= 0x10000)
+ r >>= 16;
+ for (i = 0; i < chip->num_freqs; ++i) {
+ if (r == chip->freq_table[i]) {
+ chip->freqs_ok |= (1 << i);
+ break;
+ }
+ }
+ }
+ } else {
+ /* assume only 44.1khz */
+ chip->freqs_ok = 1;
+ }
+
+ of_node_put(sound);
+ return 0;
+}
+
+#ifdef PMAC_SUPPORT_AUTOMUTE
+/*
+ * auto-mute
+ */
+static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
+ ucontrol->value.integer.value[0] = chip->auto_mute;
+ return 0;
+}
+
+static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ 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];
+ if (chip->update_automute)
+ chip->update_automute(chip, 1);
+ return 1;
+ }
+ return 0;
+}
+
+static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
+ if (chip->detect_headphone)
+ ucontrol->value.integer.value[0] = chip->detect_headphone(chip);
+ else
+ ucontrol->value.integer.value[0] = 0;
+ return 0;
+}
+
+static struct snd_kcontrol_new auto_mute_controls[] = {
+ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Auto Mute Switch",
+ .info = snd_pmac_boolean_mono_info,
+ .get = pmac_auto_mute_get,
+ .put = pmac_auto_mute_put,
+ },
+ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Headphone Detection",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ,
+ .info = snd_pmac_boolean_mono_info,
+ .get = pmac_hp_detect_get,
+ },
+};
+
+int snd_pmac_add_automute(struct snd_pmac *chip)
+{
+ int err;
+ chip->auto_mute = 1;
+ err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip));
+ if (err < 0) {
+ printk(KERN_ERR "snd-powermac: Failed to add automute control\n");
+ return err;
+ }
+ chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip);
+ return snd_ctl_add(chip->card, chip->hp_detect_ctl);
+}
+#endif /* PMAC_SUPPORT_AUTOMUTE */
+
+/*
+ * create and detect a pmac chip record
+ */
+int snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
+{
+ struct snd_pmac *chip;
+ struct device_node *np;
+ int i, err;
+ unsigned int irq;
+ unsigned long ctrl_addr, txdma_addr, rxdma_addr;
+ static struct snd_device_ops ops = {
+ .dev_free = snd_pmac_dev_free,
+ };
+
+ *chip_return = NULL;
+
+ chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+ if (chip == NULL)
+ return -ENOMEM;
+ chip->card = card;
+
+ spin_lock_init(&chip->reg_lock);
+ chip->irq = chip->tx_irq = chip->rx_irq = -1;
+
+ chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK;
+ chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE;
+
+ if ((err = snd_pmac_detect(chip)) < 0)
+ goto __error;
+
+ 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, &emergency_dbdma, 2) < 0) {
+ err = -ENOMEM;
+ goto __error;
+ }
+
+ np = chip->node;
+ chip->requested = 0;
+ if (chip->is_k2) {
+ static char *rnames[] = {
+ "Sound Control", "Sound DMA" };
+ for (i = 0; i < 2; i ++) {
+ if (of_address_to_resource(np->parent, i,
+ &chip->rsrc[i])) {
+ printk(KERN_ERR "snd: can't translate rsrc "
+ " %d (%s)\n", i, rnames[i]);
+ err = -ENODEV;
+ goto __error;
+ }
+ if (request_mem_region(chip->rsrc[i].start,
+ resource_size(&chip->rsrc[i]),
+ rnames[i]) == NULL) {
+ printk(KERN_ERR "snd: can't request rsrc "
+ " %d (%s: %pR)\n",
+ i, rnames[i], &chip->rsrc[i]);
+ err = -ENODEV;
+ goto __error;
+ }
+ chip->requested |= (1 << i);
+ }
+ ctrl_addr = chip->rsrc[0].start;
+ txdma_addr = chip->rsrc[1].start;
+ rxdma_addr = txdma_addr + 0x100;
+ } else {
+ static char *rnames[] = {
+ "Sound Control", "Sound Tx DMA", "Sound Rx DMA" };
+ for (i = 0; i < 3; i ++) {
+ if (of_address_to_resource(np, i,
+ &chip->rsrc[i])) {
+ printk(KERN_ERR "snd: can't translate rsrc "
+ " %d (%s)\n", i, rnames[i]);
+ err = -ENODEV;
+ goto __error;
+ }
+ if (request_mem_region(chip->rsrc[i].start,
+ resource_size(&chip->rsrc[i]),
+ rnames[i]) == NULL) {
+ printk(KERN_ERR "snd: can't request rsrc "
+ " %d (%s: %pR)\n",
+ i, rnames[i], &chip->rsrc[i]);
+ err = -ENODEV;
+ goto __error;
+ }
+ chip->requested |= (1 << i);
+ }
+ ctrl_addr = chip->rsrc[0].start;
+ txdma_addr = chip->rsrc[1].start;
+ rxdma_addr = chip->rsrc[2].start;
+ }
+
+ chip->awacs = ioremap(ctrl_addr, 0x1000);
+ chip->playback.dma = ioremap(txdma_addr, 0x100);
+ chip->capture.dma = ioremap(rxdma_addr, 0x100);
+ if (chip->model <= PMAC_BURGUNDY) {
+ irq = irq_of_parse_and_map(np, 0);
+ if (request_irq(irq, snd_pmac_ctrl_intr, 0,
+ "PMac", (void*)chip)) {
+ snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n",
+ irq);
+ err = -EBUSY;
+ goto __error;
+ }
+ chip->irq = irq;
+ }
+ irq = irq_of_parse_and_map(np, 1);
+ if (request_irq(irq, snd_pmac_tx_intr, 0, "PMac Output", (void*)chip)){
+ snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
+ err = -EBUSY;
+ goto __error;
+ }
+ chip->tx_irq = irq;
+ irq = irq_of_parse_and_map(np, 2);
+ if (request_irq(irq, snd_pmac_rx_intr, 0, "PMac Input", (void*)chip)) {
+ snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
+ err = -EBUSY;
+ goto __error;
+ }
+ chip->rx_irq = irq;
+
+ snd_pmac_sound_feature(chip, 1);
+
+ /* 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
+ or a PC-card modem. */
+ if (chip->is_pbook_3400) {
+ /* Enable CD and PC-card sound inputs. */
+ /* This is done by reading from address
+ * f301a000, + 0x10 to enable the expansion-bay
+ * CD sound input, + 0x80 to enable the PC-card
+ * sound input. The 0x100 enables the SCSI bus
+ * terminator power.
+ */
+ chip->latch_base = ioremap (0xf301a000, 0x1000);
+ in_8(chip->latch_base + 0x190);
+ } else if (chip->is_pbook_G3) {
+ struct device_node* mio;
+ for (mio = chip->node->parent; mio; mio = mio->parent) {
+ if (strcmp(mio->name, "mac-io") == 0) {
+ struct resource r;
+ if (of_address_to_resource(mio, 0, &r) == 0)
+ chip->macio_base =
+ ioremap(r.start, 0x40);
+ break;
+ }
+ }
+ /* Enable CD sound input. */
+ /* The relevant bits for writing to this byte are 0x8f.
+ * I haven't found out what the 0x80 bit does.
+ * For the 0xf bits, writing 3 or 7 enables the CD
+ * input, any other value disables it. Values
+ * 1, 3, 5, 7 enable the microphone. Values 0, 2,
+ * 4, 6, 8 - f enable the input from the modem.
+ */
+ if (chip->macio_base)
+ out_8(chip->macio_base + 0x37, 3);
+ }
+
+ /* Reset dbdma channels */
+ snd_pmac_dbdma_reset(chip);
+
+ if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
+ goto __error;
+
+ *chip_return = chip;
+ return 0;
+
+ __error:
+ snd_pmac_free(chip);
+ return err;
+}
+
+
+/*
+ * sleep notify for powerbook
+ */
+
+#ifdef CONFIG_PM
+
+/*
+ * Save state when going to sleep, restore it afterwards.
+ */
+
+void snd_pmac_suspend(struct snd_pmac *chip)
+{
+ unsigned long flags;
+
+ snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
+ if (chip->suspend)
+ chip->suspend(chip);
+ snd_pcm_suspend_all(chip->pcm);
+ spin_lock_irqsave(&chip->reg_lock, flags);
+ snd_pmac_beep_stop(chip);
+ spin_unlock_irqrestore(&chip->reg_lock, flags);
+ if (chip->irq >= 0)
+ disable_irq(chip->irq);
+ if (chip->tx_irq >= 0)
+ disable_irq(chip->tx_irq);
+ if (chip->rx_irq >= 0)
+ disable_irq(chip->rx_irq);
+ snd_pmac_sound_feature(chip, 0);
+}
+
+void snd_pmac_resume(struct snd_pmac *chip)
+{
+ snd_pmac_sound_feature(chip, 1);
+ if (chip->resume)
+ chip->resume(chip);
+ /* enable CD sound input */
+ if (chip->macio_base && chip->is_pbook_G3)
+ out_8(chip->macio_base + 0x37, 3);
+ else if (chip->is_pbook_3400)
+ in_8(chip->latch_base + 0x190);
+
+ snd_pmac_pcm_set_format(chip);
+
+ if (chip->irq >= 0)
+ enable_irq(chip->irq);
+ if (chip->tx_irq >= 0)
+ enable_irq(chip->tx_irq);
+ if (chip->rx_irq >= 0)
+ enable_irq(chip->rx_irq);
+
+ snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
+}
+
+#endif /* CONFIG_PM */
+
Code Review / kvmfornfv.git / blobdiff