diff options
| author | Takashi Iwai <tiwai@suse.de> | 2018-08-08 22:38:36 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-08-28 13:56:49 +0200 |
| commit | 87246f7fd572f9c3db752708730d68cc9eb08d72 (patch) | |
| tree | 64dcaf1eca9ee0f38b3bb1b0f0682185455e0f58 /sound/x86 | |
| parent | ALSA: intel8x0: Use the new non-cached allocation for 440MX workaround (diff) | |
| download | linux-87246f7fd572f9c3db752708730d68cc9eb08d72.tar.xz linux-87246f7fd572f9c3db752708730d68cc9eb08d72.zip | |
ALSA: intel_hdmi: Use the new non-cached allocation
The HDMI LPE audio driver requires the non-cached page allocations for
its buffers. With the recent support of SNDRV_DMA_TYPE_DEV_UC type,
we can reduce lots of codes in the driver side and let the memalloc
core doing it properly.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/x86')
| -rw-r--r-- | sound/x86/intel_hdmi_audio.c | 29 |
1 files changed, 3 insertions, 26 deletions
diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c index fa7dca5a68c8..83d76c345940 100644 --- a/sound/x86/intel_hdmi_audio.c +++ b/sound/x86/intel_hdmi_audio.c @@ -30,7 +30,6 @@ #include <linux/pm_runtime.h> #include <linux/dma-mapping.h> #include <linux/delay.h> -#include <asm/set_memory.h> #include <sound/core.h> #include <sound/asoundef.h> #include <sound/pcm.h> @@ -1141,8 +1140,7 @@ static int had_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) { struct snd_intelhad *intelhaddata; - unsigned long addr; - int pages, buf_size, retval; + int buf_size, retval; intelhaddata = snd_pcm_substream_chip(substream); buf_size = params_buffer_bytes(hw_params); @@ -1151,17 +1149,6 @@ static int had_pcm_hw_params(struct snd_pcm_substream *substream, return retval; dev_dbg(intelhaddata->dev, "%s:allocated memory = %d\n", __func__, buf_size); - /* mark the pages as uncached region */ - addr = (unsigned long) substream->runtime->dma_area; - pages = (substream->runtime->dma_bytes + PAGE_SIZE - 1) / PAGE_SIZE; - retval = set_memory_uc(addr, pages); - if (retval) { - dev_err(intelhaddata->dev, "set_memory_uc failed.Error:%d\n", - retval); - return retval; - } - memset(substream->runtime->dma_area, 0, buf_size); - return retval; } @@ -1171,21 +1158,11 @@ static int had_pcm_hw_params(struct snd_pcm_substream *substream, static int had_pcm_hw_free(struct snd_pcm_substream *substream) { struct snd_intelhad *intelhaddata; - unsigned long addr; - u32 pages; intelhaddata = snd_pcm_substream_chip(substream); had_do_reset(intelhaddata); - /* mark back the pages as cached/writeback region before the free */ - if (substream->runtime->dma_area != NULL) { - addr = (unsigned long) substream->runtime->dma_area; - pages = (substream->runtime->dma_bytes + PAGE_SIZE - 1) / - PAGE_SIZE; - set_memory_wb(addr, pages); - return snd_pcm_lib_free_pages(substream); - } - return 0; + return snd_pcm_lib_free_pages(substream); } /* @@ -1860,7 +1837,7 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev) * try to allocate 600k buffer as default which is large enough */ snd_pcm_lib_preallocate_pages_for_all(pcm, - SNDRV_DMA_TYPE_DEV, NULL, + SNDRV_DMA_TYPE_DEV_UC, NULL, HAD_DEFAULT_BUFFER, HAD_MAX_BUFFER); /* create controls */ |