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ASoC: wm_adsp: Use asynchronous I/O to write firmware and coefficients

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Allow the regmap API to use asynchronous I/O where supported to minimise
the delay between transfers, reducing firmware download times.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2013-01-30 14:37:23 +08:00
parent 4c47c2b0f8
commit cf17c83c4a
1 changed files with 66 additions and 16 deletions
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80
sound/soc/codecs/wm_adsp.c
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@ -15,6 +15,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/list.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
@ -153,6 +154,43 @@
#define ADSP2_RAM_RDY_SHIFT 0
#define ADSP2_RAM_RDY_WIDTH 1
struct wm_adsp_buf {
struct list_head list;
void *buf;
};
static struct wm_adsp_buf *wm_adsp_buf_alloc(const void *src, size_t len,
struct list_head *list)
{
struct wm_adsp_buf *buf = kzalloc(sizeof(*buf), GFP_KERNEL);
if (buf == NULL)
return NULL;
buf->buf = kmemdup(src, len, GFP_KERNEL | GFP_DMA);
if (!buf->buf) {
kfree(buf);
return NULL;
}
if (list)
list_add_tail(&buf->list, list);
return buf;
}
static void wm_adsp_buf_free(struct list_head *list)
{
while (!list_empty(list)) {
struct wm_adsp_buf *buf = list_first_entry(list,
struct wm_adsp_buf,
list);
list_del(&buf->list);
kfree(buf->buf);
kfree(buf);
}
}
#define WM_ADSP_NUM_FW 4
static const char *wm_adsp_fw_text[WM_ADSP_NUM_FW] = {
@ -254,6 +292,7 @@ static unsigned int wm_adsp_region_to_reg(struct wm_adsp_region const *region,
static int wm_adsp_load(struct wm_adsp *dsp)
{
LIST_HEAD(buf_list);
const struct firmware *firmware;
struct regmap *regmap = dsp->regmap;
unsigned int pos = 0;
@ -265,7 +304,7 @@ static int wm_adsp_load(struct wm_adsp *dsp)
const struct wm_adsp_region *mem;
const char *region_name;
char *file, *text;
void *buf;
struct wm_adsp_buf *buf;
unsigned int reg;
int regions = 0;
int ret, offset, type, sizes;
@ -420,18 +459,16 @@ static int wm_adsp_load(struct wm_adsp *dsp)
}
if (reg) {
buf = kmemdup(region->data, le32_to_cpu(region->len),
GFP_KERNEL | GFP_DMA);
buf = wm_adsp_buf_alloc(region->data,
le32_to_cpu(region->len),
&buf_list);
if (!buf) {
adsp_err(dsp, "Out of memory\n");
return -ENOMEM;
}
ret = regmap_raw_write(regmap, reg, buf,
le32_to_cpu(region->len));
kfree(buf);
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",
@ -446,11 +483,19 @@ static int wm_adsp_load(struct wm_adsp *dsp)
regions++;
}
ret = regmap_async_complete(regmap);
if (ret != 0) {
adsp_err(dsp, "Failed to complete async write: %d\n", ret);
goto out_fw;
}
if (pos > firmware->size)
adsp_warn(dsp, "%s.%d: %zu bytes at end of file\n",
file, regions, pos - firmware->size);
out_fw:
regmap_async_complete(regmap);
wm_adsp_buf_free(&buf_list);
release_firmware(firmware);
out:
kfree(file);
@ -655,6 +700,7 @@ static int wm_adsp_setup_algs(struct wm_adsp *dsp)
static int wm_adsp_load_coeff(struct wm_adsp *dsp)
{
LIST_HEAD(buf_list);
struct regmap *regmap = dsp->regmap;
struct wmfw_coeff_hdr *hdr;
struct wmfw_coeff_item *blk;
@ -664,7 +710,7 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp)
const char *region_name;
int ret, pos, blocks, type, offset, reg;
char *file;
void *buf;
struct wm_adsp_buf *buf;
file = kzalloc(PAGE_SIZE, GFP_KERNEL);
if (file == NULL)
@ -776,8 +822,9 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp)
}
if (reg) {
buf = kmemdup(blk->data, le32_to_cpu(blk->len),
GFP_KERNEL | GFP_DMA);
buf = wm_adsp_buf_alloc(blk->data,
le32_to_cpu(blk->len),
&buf_list);
if (!buf) {
adsp_err(dsp, "Out of memory\n");
return -ENOMEM;
@ -786,27 +833,30 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp)
adsp_dbg(dsp, "%s.%d: Writing %d bytes at %x\n",
file, blocks, le32_to_cpu(blk->len),
reg);
ret = regmap_raw_write(regmap, reg, blk->data,
le32_to_cpu(blk->len));
ret = regmap_raw_write_async(regmap, reg, buf->buf,
le32_to_cpu(blk->len));
if (ret != 0) {
adsp_err(dsp,
"%s.%d: Failed to write to %x in %s\n",
file, blocks, reg, region_name);
}
kfree(buf);
}
pos += le32_to_cpu(blk->len) + sizeof(*blk);
blocks++;
}
ret = regmap_async_complete(regmap);
if (ret != 0)
adsp_err(dsp, "Failed to complete async write: %d\n", ret);
if (pos > firmware->size)
adsp_warn(dsp, "%s.%d: %zu bytes at end of file\n",
file, blocks, pos - firmware->size);
out_fw:
release_firmware(firmware);
wm_adsp_buf_free(&buf_list);
out:
kfree(file);
return 0;