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1367 lines
36 KiB
1367 lines
36 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* PMac DBDMA lowlevel functions |
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* |
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* Copyright (c) by Takashi Iwai <[email protected]> |
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* code based on dmasound.c. |
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*/ |
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#include <linux/io.h> |
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#include <asm/irq.h> |
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#include <linux/init.h> |
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#include <linux/delay.h> |
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#include <linux/slab.h> |
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#include <linux/interrupt.h> |
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#include <linux/pci.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/of_address.h> |
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#include <linux/of_irq.h> |
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#include <sound/core.h> |
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#include "pmac.h" |
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#include <sound/pcm_params.h> |
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#include <asm/pmac_feature.h> |
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/* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */ |
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static const int awacs_freqs[8] = { |
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44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350 |
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}; |
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/* fixed frequency table for tumbler */ |
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static const int tumbler_freqs[1] = { |
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44100 |
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}; |
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/* |
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* we will allocate a single 'emergency' dbdma cmd block to use if the |
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* tx status comes up "DEAD". This happens on some PowerComputing Pmac |
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* clones, either owing to a bug in dbdma or some interaction between |
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* IDE and sound. However, this measure would deal with DEAD status if |
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* it appeared elsewhere. |
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*/ |
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static struct pmac_dbdma emergency_dbdma; |
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static int emergency_in_use; |
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/* |
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* allocate DBDMA command arrays |
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*/ |
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static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size) |
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{ |
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unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1); |
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rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize, |
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&rec->dma_base, GFP_KERNEL); |
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if (rec->space == NULL) |
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return -ENOMEM; |
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rec->size = size; |
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memset(rec->space, 0, rsize); |
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rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space); |
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rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space); |
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return 0; |
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} |
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static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec) |
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{ |
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if (rec->space) { |
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unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1); |
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dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base); |
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} |
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} |
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/* |
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* pcm stuff |
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*/ |
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/* |
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* look up frequency table |
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*/ |
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unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate) |
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{ |
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int i, ok, found; |
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ok = rec->cur_freqs; |
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if (rate > chip->freq_table[0]) |
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return 0; |
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found = 0; |
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for (i = 0; i < chip->num_freqs; i++, ok >>= 1) { |
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if (! (ok & 1)) continue; |
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found = i; |
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if (rate >= chip->freq_table[i]) |
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break; |
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} |
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return found; |
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} |
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/* |
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* check whether another stream is active |
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*/ |
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static inline int another_stream(int stream) |
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{ |
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return (stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
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SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; |
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} |
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/* |
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* get a stream of the opposite direction |
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*/ |
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static struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *chip, int stream) |
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{ |
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switch (stream) { |
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case SNDRV_PCM_STREAM_PLAYBACK: |
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return &chip->playback; |
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case SNDRV_PCM_STREAM_CAPTURE: |
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return &chip->capture; |
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default: |
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snd_BUG(); |
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return NULL; |
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} |
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} |
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/* |
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* wait while run status is on |
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*/ |
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static inline void |
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snd_pmac_wait_ack(struct pmac_stream *rec) |
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{ |
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int timeout = 50000; |
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while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0) |
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udelay(1); |
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} |
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/* |
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* set the format and rate to the chip. |
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* call the lowlevel function if defined (e.g. for AWACS). |
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*/ |
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static void snd_pmac_pcm_set_format(struct snd_pmac *chip) |
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{ |
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/* set up frequency and format */ |
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out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8)); |
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out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0); |
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if (chip->set_format) |
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chip->set_format(chip); |
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} |
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/* |
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* stop the DMA transfer |
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*/ |
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static inline void snd_pmac_dma_stop(struct pmac_stream *rec) |
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{ |
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out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16); |
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snd_pmac_wait_ack(rec); |
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} |
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/* |
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* set the command pointer address |
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*/ |
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static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd) |
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{ |
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out_le32(&rec->dma->cmdptr, cmd->addr); |
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} |
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/* |
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* start the DMA |
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*/ |
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static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status) |
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{ |
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out_le32(&rec->dma->control, status | (status << 16)); |
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} |
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/* |
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* prepare playback/capture stream |
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*/ |
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static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs) |
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{ |
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int i; |
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volatile struct dbdma_cmd __iomem *cp; |
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struct snd_pcm_runtime *runtime = subs->runtime; |
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int rate_index; |
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long offset; |
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struct pmac_stream *astr; |
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rec->dma_size = snd_pcm_lib_buffer_bytes(subs); |
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rec->period_size = snd_pcm_lib_period_bytes(subs); |
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rec->nperiods = rec->dma_size / rec->period_size; |
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rec->cur_period = 0; |
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rate_index = snd_pmac_rate_index(chip, rec, runtime->rate); |
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/* set up constraints */ |
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astr = snd_pmac_get_stream(chip, another_stream(rec->stream)); |
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if (! astr) |
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return -EINVAL; |
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astr->cur_freqs = 1 << rate_index; |
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astr->cur_formats = 1 << runtime->format; |
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chip->rate_index = rate_index; |
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chip->format = runtime->format; |
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/* We really want to execute a DMA stop command, after the AWACS |
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* is initialized. |
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* For reasons I don't understand, it stops the hissing noise |
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* common to many PowerBook G3 systems and random noise otherwise |
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* captured on iBook2's about every third time. -ReneR |
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*/ |
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spin_lock_irq(&chip->reg_lock); |
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snd_pmac_dma_stop(rec); |
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chip->extra_dma.cmds->command = cpu_to_le16(DBDMA_STOP); |
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snd_pmac_dma_set_command(rec, &chip->extra_dma); |
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snd_pmac_dma_run(rec, RUN); |
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spin_unlock_irq(&chip->reg_lock); |
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mdelay(5); |
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spin_lock_irq(&chip->reg_lock); |
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/* continuous DMA memory type doesn't provide the physical address, |
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* so we need to resolve the address here... |
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*/ |
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offset = runtime->dma_addr; |
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for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) { |
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cp->phy_addr = cpu_to_le32(offset); |
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cp->req_count = cpu_to_le16(rec->period_size); |
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/*cp->res_count = cpu_to_le16(0);*/ |
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cp->xfer_status = cpu_to_le16(0); |
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offset += rec->period_size; |
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} |
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/* make loop */ |
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cp->command = cpu_to_le16(DBDMA_NOP | BR_ALWAYS); |
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cp->cmd_dep = cpu_to_le32(rec->cmd.addr); |
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snd_pmac_dma_stop(rec); |
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snd_pmac_dma_set_command(rec, &rec->cmd); |
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spin_unlock_irq(&chip->reg_lock); |
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return 0; |
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} |
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/* |
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* PCM trigger/stop |
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*/ |
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static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec, |
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struct snd_pcm_substream *subs, int cmd) |
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{ |
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volatile struct dbdma_cmd __iomem *cp; |
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int i, command; |
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switch (cmd) { |
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case SNDRV_PCM_TRIGGER_START: |
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case SNDRV_PCM_TRIGGER_RESUME: |
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if (rec->running) |
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return -EBUSY; |
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command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
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OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS; |
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spin_lock(&chip->reg_lock); |
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snd_pmac_beep_stop(chip); |
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snd_pmac_pcm_set_format(chip); |
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for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) |
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out_le16(&cp->command, command); |
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snd_pmac_dma_set_command(rec, &rec->cmd); |
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(void)in_le32(&rec->dma->status); |
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snd_pmac_dma_run(rec, RUN|WAKE); |
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rec->running = 1; |
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spin_unlock(&chip->reg_lock); |
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break; |
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case SNDRV_PCM_TRIGGER_STOP: |
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case SNDRV_PCM_TRIGGER_SUSPEND: |
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spin_lock(&chip->reg_lock); |
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rec->running = 0; |
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/*printk(KERN_DEBUG "stopped!!\n");*/ |
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snd_pmac_dma_stop(rec); |
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for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) |
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out_le16(&cp->command, DBDMA_STOP); |
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spin_unlock(&chip->reg_lock); |
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break; |
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default: |
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return -EINVAL; |
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} |
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return 0; |
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} |
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/* |
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* return the current pointer |
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*/ |
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inline |
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static snd_pcm_uframes_t snd_pmac_pcm_pointer(struct snd_pmac *chip, |
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struct pmac_stream *rec, |
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struct snd_pcm_substream *subs) |
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{ |
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int count = 0; |
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#if 1 /* hmm.. how can we get the current dma pointer?? */ |
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int stat; |
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volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period]; |
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stat = le16_to_cpu(cp->xfer_status); |
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if (stat & (ACTIVE|DEAD)) { |
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count = in_le16(&cp->res_count); |
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if (count) |
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count = rec->period_size - count; |
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} |
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#endif |
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count += rec->cur_period * rec->period_size; |
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/*printk(KERN_DEBUG "pointer=%d\n", count);*/ |
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return bytes_to_frames(subs->runtime, count); |
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} |
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/* |
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* playback |
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*/ |
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static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs) |
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{ |
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struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
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return snd_pmac_pcm_prepare(chip, &chip->playback, subs); |
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} |
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static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs, |
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int cmd) |
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{ |
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struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
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return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd); |
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} |
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static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs) |
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{ |
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struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
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return snd_pmac_pcm_pointer(chip, &chip->playback, subs); |
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} |
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/* |
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* capture |
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*/ |
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static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs) |
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{ |
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struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
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return snd_pmac_pcm_prepare(chip, &chip->capture, subs); |
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} |
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static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs, |
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int cmd) |
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{ |
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struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
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return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd); |
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} |
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static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs) |
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{ |
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struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
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return snd_pmac_pcm_pointer(chip, &chip->capture, subs); |
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} |
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/* |
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* Handle DEAD DMA transfers: |
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* if the TX status comes up "DEAD" - reported on some Power Computing machines |
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* we need to re-start the dbdma - but from a different physical start address |
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* and with a different transfer length. It would get very messy to do this |
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* with the normal dbdma_cmd blocks - we would have to re-write the buffer start |
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* addresses each time. So, we will keep a single dbdma_cmd block which can be |
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* fiddled with. |
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* When DEAD status is first reported the content of the faulted dbdma block is |
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* copied into the emergency buffer and we note that the buffer is in use. |
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* we then bump the start physical address by the amount that was successfully |
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* output before it died. |
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* On any subsequent DEAD result we just do the bump-ups (we know that we are |
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* already using the emergency dbdma_cmd). |
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* CHECK: this just tries to "do it". It is possible that we should abandon |
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* xfers when the number of residual bytes gets below a certain value - I can |
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* see that this might cause a loop-forever if a too small transfer causes |
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* DEAD status. However this is a TODO for now - we'll see what gets reported. |
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* When we get a successful transfer result with the emergency buffer we just |
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* pretend that it completed using the original dmdma_cmd and carry on. The |
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* 'next_cmd' field will already point back to the original loop of blocks. |
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*/ |
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static inline void snd_pmac_pcm_dead_xfer(struct pmac_stream *rec, |
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volatile struct dbdma_cmd __iomem *cp) |
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{ |
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unsigned short req, res ; |
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unsigned int phy ; |
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/* printk(KERN_WARNING "snd-powermac: DMA died - patching it up!\n"); */ |
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/* to clear DEAD status we must first clear RUN |
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set it to quiescent to be on the safe side */ |
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(void)in_le32(&rec->dma->status); |
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out_le32(&rec->dma->control, (RUN|PAUSE|FLUSH|WAKE) << 16); |
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if (!emergency_in_use) { /* new problem */ |
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memcpy((void *)emergency_dbdma.cmds, (void *)cp, |
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sizeof(struct dbdma_cmd)); |
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emergency_in_use = 1; |
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cp->xfer_status = cpu_to_le16(0); |
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cp->req_count = cpu_to_le16(rec->period_size); |
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cp = emergency_dbdma.cmds; |
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} |
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/* now bump the values to reflect the amount |
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we haven't yet shifted */ |
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req = le16_to_cpu(cp->req_count); |
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res = le16_to_cpu(cp->res_count); |
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phy = le32_to_cpu(cp->phy_addr); |
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phy += (req - res); |
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cp->req_count = cpu_to_le16(res); |
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cp->res_count = cpu_to_le16(0); |
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cp->xfer_status = cpu_to_le16(0); |
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cp->phy_addr = cpu_to_le32(phy); |
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cp->cmd_dep = cpu_to_le32(rec->cmd.addr |
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+ sizeof(struct dbdma_cmd)*((rec->cur_period+1)%rec->nperiods)); |
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cp->command = cpu_to_le16(OUTPUT_MORE | BR_ALWAYS | INTR_ALWAYS); |
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/* point at our patched up command block */ |
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out_le32(&rec->dma->cmdptr, emergency_dbdma.addr); |
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|
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/* we must re-start the controller */ |
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(void)in_le32(&rec->dma->status); |
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/* should complete clearing the DEAD status */ |
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out_le32(&rec->dma->control, ((RUN|WAKE) << 16) + (RUN|WAKE)); |
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} |
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/* |
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* update playback/capture pointer from interrupts |
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*/ |
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static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec) |
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{ |
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volatile struct dbdma_cmd __iomem *cp; |
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int c; |
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int stat; |
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spin_lock(&chip->reg_lock); |
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if (rec->running) { |
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for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */ |
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if (emergency_in_use) /* already using DEAD xfer? */ |
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cp = emergency_dbdma.cmds; |
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else |
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cp = &rec->cmd.cmds[rec->cur_period]; |
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stat = le16_to_cpu(cp->xfer_status); |
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if (stat & DEAD) { |
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snd_pmac_pcm_dead_xfer(rec, cp); |
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break; /* this block is still going */ |
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} |
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|
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if (emergency_in_use) |
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emergency_in_use = 0 ; /* done that */ |
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|
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if (! (stat & ACTIVE)) |
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break; |
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/*printk(KERN_DEBUG "update frag %d\n", rec->cur_period);*/ |
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cp->xfer_status = cpu_to_le16(0); |
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cp->req_count = cpu_to_le16(rec->period_size); |
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/*cp->res_count = cpu_to_le16(0);*/ |
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rec->cur_period++; |
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if (rec->cur_period >= rec->nperiods) { |
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rec->cur_period = 0; |
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} |
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spin_unlock(&chip->reg_lock); |
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snd_pcm_period_elapsed(rec->substream); |
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spin_lock(&chip->reg_lock); |
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} |
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} |
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spin_unlock(&chip->reg_lock); |
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} |
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/* |
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* hw info |
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*/ |
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static const struct snd_pcm_hardware snd_pmac_playback = |
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{ |
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.info = (SNDRV_PCM_INFO_INTERLEAVED | |
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SNDRV_PCM_INFO_MMAP | |
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SNDRV_PCM_INFO_MMAP_VALID | |
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SNDRV_PCM_INFO_RESUME), |
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.formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE, |
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.rates = SNDRV_PCM_RATE_8000_44100, |
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.rate_min = 7350, |
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.rate_max = 44100, |
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.channels_min = 2, |
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.channels_max = 2, |
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.buffer_bytes_max = 131072, |
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.period_bytes_min = 256, |
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.period_bytes_max = 16384, |
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.periods_min = 3, |
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.periods_max = PMAC_MAX_FRAGS, |
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}; |
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|
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static const struct snd_pcm_hardware snd_pmac_capture = |
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{ |
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.info = (SNDRV_PCM_INFO_INTERLEAVED | |
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SNDRV_PCM_INFO_MMAP | |
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SNDRV_PCM_INFO_MMAP_VALID | |
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SNDRV_PCM_INFO_RESUME), |
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.formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE, |
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.rates = SNDRV_PCM_RATE_8000_44100, |
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.rate_min = 7350, |
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.rate_max = 44100, |
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.channels_min = 2, |
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.channels_max = 2, |
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.buffer_bytes_max = 131072, |
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.period_bytes_min = 256, |
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.period_bytes_max = 16384, |
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.periods_min = 3, |
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.periods_max = PMAC_MAX_FRAGS, |
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}; |
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|
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#if 0 // NYI |
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static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params, |
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struct snd_pcm_hw_rule *rule) |
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{ |
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struct snd_pmac *chip = rule->private; |
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struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]); |
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int i, freq_table[8], num_freqs; |
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|
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if (! rec) |
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return -EINVAL; |
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num_freqs = 0; |
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for (i = chip->num_freqs - 1; i >= 0; i--) { |
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if (rec->cur_freqs & (1 << i)) |
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freq_table[num_freqs++] = chip->freq_table[i]; |
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} |
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|
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return snd_interval_list(hw_param_interval(params, rule->var), |
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num_freqs, freq_table, 0); |
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} |
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|
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static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params, |
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struct snd_pcm_hw_rule *rule) |
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{ |
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struct snd_pmac *chip = rule->private; |
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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 const struct snd_pcm_ops snd_pmac_playback_ops = { |
|
.open = snd_pmac_playback_open, |
|
.close = snd_pmac_playback_close, |
|
.prepare = snd_pmac_playback_prepare, |
|
.trigger = snd_pmac_playback_trigger, |
|
.pointer = snd_pmac_playback_pointer, |
|
}; |
|
|
|
static const struct snd_pcm_ops snd_pmac_capture_ops = { |
|
.open = snd_pmac_capture_open, |
|
.close = snd_pmac_capture_close, |
|
.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_set_managed_buffer_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 (of_node_name_eq(mio, "mac-io")) { |
|
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 const 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 const 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 const char * const 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 const char * const 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 (of_node_name_eq(mio, "mac-io")) { |
|
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); |
|
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 */ |
|
|
|
|