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memory: brcmstb: dpfe: prepare for API-dependent sysfs attributes 

Prepare the driver so that sysfs attributes can differ based on the API
version.

Signed-off-by: Markus Mayer <mmayer@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This commit is contained in:
Markus Mayer 2019-04-02 16:01:02 -07:00 committed by Florian Fainelli
parent 58a8499f43
commit 5ef108b446
1 changed files with 34 additions and 13 deletions
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47
drivers/memory/brcmstb_dpfe.c
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@ -168,6 +168,7 @@ struct init_data {
struct dpfe_api {
int version;
const char *fw_name;
const struct attribute_group **sysfs_attrs;
u32 command[DPFE_CMD_MAX][MSG_FIELD_MAX];
};
@ -186,10 +187,39 @@ static const char *error_text[] = {
"Incorrect checksum", "Malformed command", "Timed out",
};
/*
* Forward declaration of our sysfs attribute functions, so we can declare the
* attribute data structures early.
*/
static ssize_t show_info(struct device *, struct device_attribute *, char *);
static ssize_t show_refresh(struct device *, struct device_attribute *, char *);
static ssize_t store_refresh(struct device *, struct device_attribute *,
const char *, size_t);
static ssize_t show_vendor(struct device *, struct device_attribute *, char *);
/*
* Declare our attributes early, so they can be referenced in the API data
* structure. We need to do this, because the attributes depend on the API
* version.
*/
static DEVICE_ATTR(dpfe_info, 0444, show_info, NULL);
static DEVICE_ATTR(dpfe_refresh, 0644, show_refresh, store_refresh);
static DEVICE_ATTR(dpfe_vendor, 0444, show_vendor, NULL);
/* API v2 sysfs attributes */
static struct attribute *dpfe_v2_attrs[] = {
&dev_attr_dpfe_info.attr,
&dev_attr_dpfe_refresh.attr,
&dev_attr_dpfe_vendor.attr,
NULL
};
ATTRIBUTE_GROUPS(dpfe_v2);
/* API v2 firmware commands */
static const struct dpfe_api dpfe_api_v2 = {
.version = 2,
.fw_name = "dpfe.bin",
.sysfs_attrs = dpfe_v2_groups,
.command = {
[DPFE_CMD_GET_INFO] = {
[MSG_HEADER] = DPFE_MSG_TYPE_COMMAND,
@ -687,17 +717,6 @@ static int brcmstb_dpfe_resume(struct platform_device *pdev)
return brcmstb_dpfe_download_firmware(pdev, &init);
}
static DEVICE_ATTR(dpfe_info, 0444, show_info, NULL);
static DEVICE_ATTR(dpfe_refresh, 0644, show_refresh, store_refresh);
static DEVICE_ATTR(dpfe_vendor, 0444, show_vendor, NULL);
static struct attribute *dpfe_attrs[] = {
&dev_attr_dpfe_info.attr,
&dev_attr_dpfe_refresh.attr,
&dev_attr_dpfe_vendor.attr,
NULL
};
ATTRIBUTE_GROUPS(dpfe);
static int brcmstb_dpfe_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -750,7 +769,7 @@ static int brcmstb_dpfe_probe(struct platform_device *pdev)
return ret;
}
ret = sysfs_create_groups(&pdev->dev.kobj, dpfe_groups);
ret = sysfs_create_groups(&pdev->dev.kobj, priv->dpfe_api->sysfs_attrs);
if (!ret)
dev_info(dev, "registered with API v%d.\n",
priv->dpfe_api->version);
@ -760,7 +779,9 @@ static int brcmstb_dpfe_probe(struct platform_device *pdev)
static int brcmstb_dpfe_remove(struct platform_device *pdev)
{
sysfs_remove_groups(&pdev->dev.kobj, dpfe_groups);
struct private_data *priv = dev_get_drvdata(&pdev->dev);
sysfs_remove_groups(&pdev->dev.kobj, priv->dpfe_api->sysfs_attrs);
return 0;
}