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media: rockchip: cif: add device attr for debugging memory compact

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Signed-off-by: Allon Huang <allon.huang@rock-chips.com>
Change-Id: Iba084e61d50d966a15607afcc625ed95c153aecb
This commit is contained in:
Allon Huang
2020-08-17 16:43:30 +08:00
parent 5452fec4f4
commit 52cf176411
1 changed files with 66 additions and 0 deletions
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66
drivers/media/platform/rockchip/cif/dev.c
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@@ -48,6 +48,69 @@ MODULE_PARM_DESC(version, "version number");
static DEFINE_MUTEX(rkcif_dev_mutex);
static LIST_HEAD(rkcif_device_list);
/* show the compact mode of each stream in stream index order,
* 1 for compact, 0 for 16bit
*/
static ssize_t rkcif_show_compact_mode(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct rkcif_device *cif_dev = (struct rkcif_device *)dev_get_drvdata(dev);
int ret;
ret = snprintf(buf, PAGE_SIZE, "%d %d %d %d\n",
cif_dev->stream[0].is_compact ? 1 : 0,
cif_dev->stream[1].is_compact ? 1 : 0,
cif_dev->stream[2].is_compact ? 1 : 0,
cif_dev->stream[3].is_compact ? 1 : 0);
return ret;
}
static ssize_t rkcif_store_compact_mode(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
{
struct rkcif_device *cif_dev = (struct rkcif_device *)dev_get_drvdata(dev);
int i, index;
char val[4];
if (buf) {
index = 0;
for (i = 0; i < len; i++) {
if (buf[i] == ' ') {
continue;
} else if (buf[i] == '\0') {
break;
} else {
val[index] = buf[i];
index++;
if (index == 4)
break;
}
}
for (i = 0; i < index; i++) {
if (val[i] - '0' == 0)
cif_dev->stream[i].is_compact = false;
else
cif_dev->stream[i].is_compact = true;
}
}
return len;
}
static DEVICE_ATTR(compact_test, S_IWUSR | S_IRUSR,
rkcif_show_compact_mode, rkcif_store_compact_mode);
static struct attribute *dev_attrs[] = {
&dev_attr_compact_test.attr,
NULL,
};
static struct attribute_group dev_attr_grp = {
.attrs = dev_attrs,
};
void rkcif_write_register(struct rkcif_device *dev,
enum cif_reg_index index, u32 val)
{
@@ -1174,6 +1237,9 @@ static int rkcif_plat_probe(struct platform_device *pdev)
dev_set_drvdata(dev, cif_dev);
cif_dev->dev = dev;
if (sysfs_create_group(&pdev->dev.kobj, &dev_attr_grp))
return -ENODEV;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;