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ASoC: wm_adsp: Split firmware load into smaller chunks 

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
View File

@ -684,24 +684,38 @@ static int wm_adsp_load(struct wm_adsp *dsp)
}
if (reg) {
buf = wm_adsp_buf_alloc(region->data,
le32_to_cpu(region->len),
&buf_list);
if (!buf) {
adsp_err(dsp, "Out of memory\n");
ret = -ENOMEM;
goto out_fw;
}
size_t to_write = PAGE_SIZE;
size_t remain = le32_to_cpu(region->len);
const u8 *data = region->data;
ret = regmap_raw_write_async(regmap, reg, buf->buf,
le32_to_cpu(region->len));
if (ret != 0) {
adsp_err(dsp,
"%s.%d: Failed to write %d bytes at %d in %s: %d\n",
file, regions,
le32_to_cpu(region->len), offset,
region_name, ret);
goto out_fw;
while (remain > 0) {
if (remain < PAGE_SIZE)
to_write = remain;
buf = wm_adsp_buf_alloc(data,
to_write,
&buf_list);
if (!buf) {
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;
}
}