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authorTakashi Iwai <tiwai@suse.de>2019-11-07 14:12:30 +0100
committerTakashi Iwai <tiwai@suse.de>2019-11-07 14:12:30 +0100
commit9ff7759731db1df8dfe036046d05c3f7ed1e37b0 (patch)
tree9366d594798a7c913a03c0be0c34360ecfa45f14 /sound/core
parentfdea53fe5de532969a332d6e5e727f2ad8bf084d (diff)
parent2acdcabb8a4089476208a822050dd47a6557290d (diff)
Merge tag 'asoc-v5.5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v5.5 Some big changes in the core but more about cleanps and refactorings than new features, plus a collection of new drivers and lots of small fixes and improvements to existing ones. - Lots more cleanups from Morimoto-san. Now that everything is a component this is mostly about refactorings to clarify and simplify the core, a combination of things that are no longer required due to refactorings and spotting similarities. - Many fixes to the Sound Open Firmware code. - Wake on voice support for Chromebooks. - SPI support for RT5677. - New drivers for Analog Devices ADAU7118, Intel Cannonlake systems with RT1011 and RT5682, Texas Instruments TAS2562 and TAS2770.
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/compress_offload.c2
-rw-r--r--sound/core/pcm_dmaengine.c83
2 files changed, 84 insertions, 1 deletions
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index 41905afada63..f34ce564d92c 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -528,7 +528,7 @@ static int snd_compress_check_input(struct snd_compr_params *params)
{
/* first let's check the buffer parameter's */
if (params->buffer.fragment_size == 0 ||
- params->buffer.fragments > INT_MAX / params->buffer.fragment_size ||
+ params->buffer.fragments > U32_MAX / params->buffer.fragment_size ||
params->buffer.fragments == 0)
return -EINVAL;
diff --git a/sound/core/pcm_dmaengine.c b/sound/core/pcm_dmaengine.c
index 89a05926ac73..5749a8a49784 100644
--- a/sound/core/pcm_dmaengine.c
+++ b/sound/core/pcm_dmaengine.c
@@ -369,4 +369,87 @@ int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream)
}
EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close_release_chan);
+/**
+ * snd_dmaengine_pcm_refine_runtime_hwparams - Refine runtime hw params
+ * @substream: PCM substream
+ * @dma_data: DAI DMA data
+ * @hw: PCM hw params
+ * @chan: DMA channel to use for data transfers
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ *
+ * This function will query DMA capability, then refine the pcm hardware
+ * parameters.
+ */
+int snd_dmaengine_pcm_refine_runtime_hwparams(
+ struct snd_pcm_substream *substream,
+ struct snd_dmaengine_dai_dma_data *dma_data,
+ struct snd_pcm_hardware *hw,
+ struct dma_chan *chan)
+{
+ struct dma_slave_caps dma_caps;
+ u32 addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
+ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
+ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+ snd_pcm_format_t i;
+ int ret = 0;
+
+ if (!hw || !chan || !dma_data)
+ return -EINVAL;
+
+ ret = dma_get_slave_caps(chan, &dma_caps);
+ if (ret == 0) {
+ if (dma_caps.cmd_pause && dma_caps.cmd_resume)
+ hw->info |= SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME;
+ if (dma_caps.residue_granularity <= DMA_RESIDUE_GRANULARITY_SEGMENT)
+ hw->info |= SNDRV_PCM_INFO_BATCH;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ addr_widths = dma_caps.dst_addr_widths;
+ else
+ addr_widths = dma_caps.src_addr_widths;
+ }
+
+ /*
+ * If SND_DMAENGINE_PCM_DAI_FLAG_PACK is set keep
+ * hw.formats set to 0, meaning no restrictions are in place.
+ * In this case it's the responsibility of the DAI driver to
+ * provide the supported format information.
+ */
+ if (!(dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK))
+ /*
+ * Prepare formats mask for valid/allowed sample types. If the
+ * dma does not have support for the given physical word size,
+ * it needs to be masked out so user space can not use the
+ * format which produces corrupted audio.
+ * In case the dma driver does not implement the slave_caps the
+ * default assumption is that it supports 1, 2 and 4 bytes
+ * widths.
+ */
+ for (i = SNDRV_PCM_FORMAT_FIRST; i <= SNDRV_PCM_FORMAT_LAST; i++) {
+ int bits = snd_pcm_format_physical_width(i);
+
+ /*
+ * Enable only samples with DMA supported physical
+ * widths
+ */
+ switch (bits) {
+ case 8:
+ case 16:
+ case 24:
+ case 32:
+ case 64:
+ if (addr_widths & (1 << (bits / 8)))
+ hw->formats |= pcm_format_to_bits(i);
+ break;
+ default:
+ /* Unsupported types */
+ break;
+ }
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_refine_runtime_hwparams);
+
MODULE_LICENSE("GPL");