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ANDROID: scsi: ufs: add a hook to add sysfs entries

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This patch adds a variant in UFS driver:

int     (*update_sysfs)(struct ufs_hba *hba);
 -> called after creating sysfs for vendor to add more sysfs entries

Bug: 158050260
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
Change-Id: Id8c1197ec704e998e89dc25cc69b0f6a1b86e978
This commit is contained in:
Jaegeuk Kim
2020-09-13 22:17:05 -07:00
parent 9670c1f680
commit 0b0468f649
4 changed files with 23 additions and 6 deletions
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16
drivers/scsi/ufs/ufs-sysfs.c
View File

@@ -854,15 +854,23 @@ const struct attribute_group ufs_sysfs_lun_attributes_group = {
.attrs = ufs_sysfs_lun_attributes, .attrs = ufs_sysfs_lun_attributes,
}; };
void ufs_sysfs_add_nodes(struct device *dev) void ufs_sysfs_add_nodes(struct ufs_hba *hba)
{ {
int ret; int ret;
ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups); ret = sysfs_create_groups(&hba->dev->kobj, ufs_sysfs_groups);
if (ret) if (ret) {
dev_err(dev, dev_err(hba->dev,
"%s: sysfs groups creation failed (err = %d)\n", "%s: sysfs groups creation failed (err = %d)\n",
__func__, ret); __func__, ret);
return;
}
ret = ufshcd_vops_update_sysfs(hba);
if (ret)
dev_err(hba->dev,
"%s: vops sysfs groups update failed (err = %d)\n",
__func__, ret);
} }
void ufs_sysfs_remove_nodes(struct device *dev) void ufs_sysfs_remove_nodes(struct device *dev)

2
drivers/scsi/ufs/ufs-sysfs.h
View File

@@ -9,7 +9,7 @@
#include "ufshcd.h" #include "ufshcd.h"
void ufs_sysfs_add_nodes(struct device *dev); void ufs_sysfs_add_nodes(struct ufs_hba *hba);
void ufs_sysfs_remove_nodes(struct device *dev); void ufs_sysfs_remove_nodes(struct device *dev);
extern const struct attribute_group ufs_sysfs_unit_descriptor_group; extern const struct attribute_group ufs_sysfs_unit_descriptor_group;

2
drivers/scsi/ufs/ufshcd.c
View File

@@ -9017,7 +9017,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
ufshcd_set_ufs_dev_active(hba); ufshcd_set_ufs_dev_active(hba);
async_schedule(ufshcd_async_scan, hba); async_schedule(ufshcd_async_scan, hba);
ufs_sysfs_add_nodes(hba->dev); ufs_sysfs_add_nodes(hba);
return 0; return 0;

9
drivers/scsi/ufs/ufshcd.h
View File

@@ -285,6 +285,7 @@ struct ufs_pwr_mode_info {
* @fill_prdt: called after initializing the standard PRDT fields so that any * @fill_prdt: called after initializing the standard PRDT fields so that any
* variant-specific PRDT fields can be initialized too * variant-specific PRDT fields can be initialized too
* @prepare_command: called when receiving a request in the first place * @prepare_command: called when receiving a request in the first place
* @update_sysfs: adds vendor-specific sysfs entries
*/ */
struct ufs_hba_variant_ops { struct ufs_hba_variant_ops {
const char *name; const char *name;
@@ -324,6 +325,7 @@ struct ufs_hba_variant_ops {
unsigned int segments); unsigned int segments);
void (*prepare_command)(struct ufs_hba *hba, void (*prepare_command)(struct ufs_hba *hba,
struct request *rq, struct ufshcd_lrb *lrbp); struct request *rq, struct ufshcd_lrb *lrbp);
int (*update_sysfs)(struct ufs_hba *hba);
}; };
/* clock gating state */ /* clock gating state */
@@ -1224,6 +1226,13 @@ static inline void ufshcd_vops_prepare_command(struct ufs_hba *hba,
hba->vops->prepare_command(hba, rq, lrbp); hba->vops->prepare_command(hba, rq, lrbp);
} }
static inline int ufshcd_vops_update_sysfs(struct ufs_hba *hba)
{
if (hba->vops && hba->vops->update_sysfs)
return hba->vops->update_sysfs(hba);
return 0;
}
extern struct ufs_pm_lvl_states ufs_pm_lvl_states[]; extern struct ufs_pm_lvl_states ufs_pm_lvl_states[];
/* /*