[alsa-devel] [PATCH 02/10] ALSA: Add new DSP loader callback routines
Ian Minett
ian_minett at creativelabs.com
Fri Sep 21 05:29:13 CEST 2012
From: Takashi Iwai <tiwai at suse.de>
Pass DMA buffer pointers in calls to setup_bdle().
Add DSP loader callback routines to controller.
Add new DSP loader switch to Kconfig to turn off DSP firmware.
Signed-off-by: Ian Minett <ian_minett at creativelabs.com>
diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig
index 7105c3d..ba1dbd8 100644
--- a/sound/pci/hda/Kconfig
+++ b/sound/pci/hda/Kconfig
@@ -236,4 +236,12 @@ config SND_HDA_POWER_SAVE_DEFAULT
The default time-out value in seconds for HD-audio automatic
power-save mode. 0 means to disable the power-save mode.
+config SND_HDA_DSP_LOADER
+ bool "Enable DSP firmware loader"
+ depends on FW_LOADER
+ default y
+ help
+ Say Y here to enable the DSP firmware loader, used by certain
+ codecs (e.g. CA0132) to transfer their DSP binaries to the hardware.
+
endif
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 507fe8a..c218bf4 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -618,6 +618,17 @@ struct hda_bus_ops {
/* notify power-up/down from codec to controller */
void (*pm_notify)(struct hda_bus *bus, bool power_up);
#endif
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+ /* prepare DSP transfer */
+ int (*load_dsp_prepare)(struct hda_bus *bus, unsigned int format,
+ unsigned int byte_size,
+ struct snd_dma_buffer *bufp);
+ /* start/stop DSP transfer */
+ void (*load_dsp_trigger)(struct hda_bus *bus, bool start);
+ /* clean up DSP transfer */
+ void (*load_dsp_cleanup)(struct hda_bus *bus,
+ struct snd_dma_buffer *dmab);
+#endif
};
/* template to pass to the bus constructor */
@@ -1129,6 +1140,40 @@ static inline void snd_hda_power_sync(struct hda_codec *codec)
int snd_hda_load_patch(struct hda_bus *bus, size_t size, const void *buf);
#endif
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+static inline int
+snd_hda_codec_load_dsp_prepare(struct hda_codec *codec, unsigned int format,
+ unsigned int size,
+ struct snd_dma_buffer *bufp)
+{
+ return codec->bus->ops.load_dsp_prepare(codec->bus, format, size, bufp);
+}
+static inline void
+snd_hda_codec_load_dsp_trigger(struct hda_codec *codec, bool start)
+{
+ return codec->bus->ops.load_dsp_trigger(codec->bus, start);
+}
+static inline void
+snd_hda_codec_load_dsp_cleanup(struct hda_codec *codec,
+ struct snd_dma_buffer *dmab)
+{
+ return codec->bus->ops.load_dsp_cleanup(codec->bus, dmab);
+}
+#else
+static inline int
+snd_hda_codec_load_dsp_prepare(struct hda_codec *codec, unsigned int format,
+ unsigned int size,
+ struct snd_dma_buffer *bufp)
+{
+ return 0;
+}
+static inline void
+snd_hda_codec_load_dsp_trigger(struct hda_codec *codec, bool start) {}
+static inline void
+snd_hda_codec_load_dsp_cleanup(struct hda_codec *codec,
+ struct snd_dma_buffer *dmab) {}
+#endif
+
/*
* Codec modularization
*/
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index bd90a51..66fefd1 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1037,6 +1037,15 @@ static unsigned int azx_get_response(struct hda_bus *bus,
static void azx_power_notify(struct hda_bus *bus, bool power_up);
#endif
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+static int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format,
+ unsigned int byte_size,
+ struct snd_dma_buffer *bufp);
+static void azx_load_dsp_trigger(struct hda_bus *bus, bool start);
+static void azx_load_dsp_cleanup(struct hda_bus *bus,
+ struct snd_dma_buffer *dmab);
+#endif
+
/* reset codec link */
static int azx_reset(struct azx *chip, int full_reset)
{
@@ -1358,7 +1367,7 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
* set up a BDL entry
*/
static int setup_bdle(struct azx *chip,
- struct snd_pcm_substream *substream,
+ struct snd_dma_buffer *dmab,
struct azx_dev *azx_dev, u32 **bdlp,
int ofs, int size, int with_ioc)
{
@@ -1371,12 +1380,12 @@ static int setup_bdle(struct azx *chip,
if (azx_dev->frags >= AZX_MAX_BDL_ENTRIES)
return -EINVAL;
- addr = snd_pcm_sgbuf_get_addr(substream, ofs);
+ addr = snd_sgbuf_get_addr(dmab, ofs);
/* program the address field of the BDL entry */
bdl[0] = cpu_to_le32((u32)addr);
bdl[1] = cpu_to_le32(upper_32_bits(addr));
/* program the size field of the BDL entry */
- chunk = snd_pcm_sgbuf_get_chunk_size(substream, ofs, size);
+ chunk = snd_sgbuf_get_chunk_size(dmab, ofs, size);
/* one BDLE cannot cross 4K boundary on CTHDA chips */
if (chip->driver_caps & AZX_DCAPS_4K_BDLE_BOUNDARY) {
u32 remain = 0x1000 - (ofs & 0xfff);
@@ -1435,7 +1444,8 @@ static int azx_setup_periods(struct azx *chip,
bdl_pos_adj[chip->dev_index]);
pos_adj = 0;
} else {
- ofs = setup_bdle(chip, substream, azx_dev,
+ ofs = setup_bdle(chip, snd_pcm_get_dma_buf(substream),
+ azx_dev,
&bdl, ofs, pos_adj, true);
if (ofs < 0)
goto error;
@@ -1444,10 +1454,12 @@ static int azx_setup_periods(struct azx *chip,
pos_adj = 0;
for (i = 0; i < periods; i++) {
if (i == periods - 1 && pos_adj)
- ofs = setup_bdle(chip, substream, azx_dev, &bdl, ofs,
+ ofs = setup_bdle(chip, snd_pcm_get_dma_buf(substream),
+ azx_dev, &bdl, ofs,
period_bytes - pos_adj, 0);
else
- ofs = setup_bdle(chip, substream, azx_dev, &bdl, ofs,
+ ofs = setup_bdle(chip, snd_pcm_get_dma_buf(substream),
+ azx_dev, &bdl, ofs,
period_bytes,
!azx_dev->no_period_wakeup);
if (ofs < 0)
@@ -1609,6 +1621,11 @@ static int DELAYED_INIT_MARK azx_codec_create(struct azx *chip, const char *mode
bus_temp.power_save = &power_save;
bus_temp.ops.pm_notify = azx_power_notify;
#endif
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+ bus_temp.ops.load_dsp_prepare = azx_load_dsp_prepare;
+ bus_temp.ops.load_dsp_trigger = azx_load_dsp_trigger;
+ bus_temp.ops.load_dsp_cleanup = azx_load_dsp_cleanup;
+#endif
err = snd_hda_bus_new(chip->card, &bus_temp, &chip->bus);
if (err < 0)
@@ -2406,6 +2423,93 @@ static void azx_stop_chip(struct azx *chip)
chip->initialized = 0;
}
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+/*
+ * DSP loading code (e.g. for CA0132)
+ */
+
+/* use the first stream for loading DSP */
+static struct azx_dev *
+azx_get_dsp_loader_dev(struct azx *chip)
+{
+ return &chip->azx_dev[chip->playback_index_offset];
+}
+
+static int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format,
+ unsigned int byte_size,
+ struct snd_dma_buffer *bufp)
+{
+ u32 *bdl;
+ struct azx *chip = bus->private_data;
+ struct azx_dev *azx_dev;
+ int err;
+
+ if (snd_hda_lock_devices(bus))
+ return -EBUSY;
+
+ err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG,
+ snd_dma_pci_data(chip->pci),
+ byte_size, bufp);
+ if (err < 0)
+ goto error;
+
+ azx_dev = azx_get_dsp_loader_dev(chip);
+ azx_dev->bufsize = byte_size;
+ azx_dev->period_bytes = byte_size;
+ azx_dev->format_val = format;
+
+ azx_stream_reset(chip, azx_dev);
+
+ /* reset BDL address */
+ azx_sd_writel(azx_dev, SD_BDLPL, 0);
+ azx_sd_writel(azx_dev, SD_BDLPU, 0);
+
+ azx_dev->frags = 0;
+ bdl = (u32 *)azx_dev->bdl.area;
+ err = setup_bdle(chip, bufp, azx_dev, &bdl, 0, byte_size, 0);
+ if (err < 0)
+ goto error;
+
+ azx_setup_controller(chip, azx_dev);
+ return azx_dev->stream_tag;
+
+ error:
+ snd_hda_unlock_devices(bus);
+ return err;
+}
+
+static void azx_load_dsp_trigger(struct hda_bus *bus, bool start)
+{
+ struct azx *chip = bus->private_data;
+ struct azx_dev *azx_dev = azx_get_dsp_loader_dev(chip);
+
+ if (start)
+ azx_stream_start(chip, azx_dev);
+ else
+ azx_stream_stop(chip, azx_dev);
+ azx_dev->running = start;
+}
+
+static void azx_load_dsp_cleanup(struct hda_bus *bus,
+ struct snd_dma_buffer *dmab)
+{
+ struct azx *chip = bus->private_data;
+ struct azx_dev *azx_dev = azx_get_dsp_loader_dev(chip);
+
+ /* reset BDL address */
+ azx_sd_writel(azx_dev, SD_BDLPL, 0);
+ azx_sd_writel(azx_dev, SD_BDLPU, 0);
+ azx_sd_writel(azx_dev, SD_CTL, 0);
+ azx_dev->bufsize = 0;
+ azx_dev->period_bytes = 0;
+ azx_dev->format_val = 0;
+
+ snd_dma_free_pages(dmab);
+
+ snd_hda_unlock_devices(bus);
+}
+#endif /* CONFIG_SND_HDA_DSP_LOADER */
+
#ifdef CONFIG_PM
/* power-up/down the controller */
static void azx_power_notify(struct hda_bus *bus, bool power_up)
--
1.7.4.1
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