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ASoC: wm_adsp: Split firmware load into smaller chunks

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The firmware files can be quite large and allocating the whole firmware
a single DMA safe buffer can be problematic if the system is under a
high memory load. Ease the requirements slightly by writing the firmware
out in page sized chunks.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Charles Keepax 2014-03-05 14:28:16 +00:00 committed by Mark Brown
parent 055bbe2df9
commit c1a7898d65
1 changed files with 31 additions and 17 deletions
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48
sound/soc/codecs/wm_adsp.c
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@ -684,24 +684,38 @@ static int wm_adsp_load(struct wm_adsp *dsp)
} }
if (reg) { if (reg) {
buf = wm_adsp_buf_alloc(region->data, size_t to_write = PAGE_SIZE;
le32_to_cpu(region->len), size_t remain = le32_to_cpu(region->len);
&buf_list); const u8 *data = region->data;
if (!buf) {
adsp_err(dsp, "Out of memory\n");
ret = -ENOMEM;
goto out_fw;
}
ret = regmap_raw_write_async(regmap, reg, buf->buf, while (remain > 0) {
le32_to_cpu(region->len)); if (remain < PAGE_SIZE)
if (ret != 0) { to_write = remain;
adsp_err(dsp,
"%s.%d: Failed to write %d bytes at %d in %s: %d\n", buf = wm_adsp_buf_alloc(data,
file, regions, to_write,
le32_to_cpu(region->len), offset, &buf_list);
region_name, ret); if (!buf) {
goto out_fw; adsp_err(dsp, "Out of memory\n");
ret = -ENOMEM;
goto out_fw;
}
ret = regmap_raw_write_async(regmap, reg,
buf->buf,
to_write);
if (ret != 0) {
adsp_err(dsp,
"%s.%d: Failed to write %d bytes at %d in %s: %d\n",
file, regions,
to_write, offset,
region_name, ret);
goto out_fw;
}
data += to_write;
reg += to_write / 2;
remain -= to_write;
} }
} }