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ufs: add get_max_pwr_mode callback

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Add a new get_max_pwr_mode callback to permit the UFS controller
driver manipulate the max_pwr_mode struct right before setting
the new pwr_mode to the UFS device.

It can be used to limit the HS Gear with errata and hardware
limitations on some UFS controllers.

Tested-by: Julius Lehmann <lehmanju@devpi.de>
Tested-by: Caleb Connolly <caleb.connolly@linaro.org> #rb3gen2
Link: https://lore.kernel.org/r/20240910-topic-ufs-qcom-controller-v1-2-54c0d2231b10@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Neil Armstrong
2024-10-14 08:56:03 +02:00
parent 182e19225b
commit b3f89c1d6e
2 changed files with 12 additions and 1 deletions
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drivers/ufs/ufs.c
+1 -1
View File
@@ -1744,7 +1744,7 @@ static int ufshcd_get_max_pwr_mode(struct ufs_hba *hba)
}
hba->max_pwr_info.is_valid = true;
return 0;
return ufshcd_ops_get_max_pwr_mode(hba, &hba->max_pwr_info);
}
static int ufshcd_change_power_mode(struct ufs_hba *hba,
drivers/ufs/ufs.h
+11
View File
@@ -696,6 +696,8 @@ struct ufs_dev_cmd {
struct ufs_hba_ops {
int (*init)(struct ufs_hba *hba);
int (*get_max_pwr_mode)(struct ufs_hba *hba,
struct ufs_pwr_mode_info *max_pwr_info);
int (*hce_enable_notify)(struct ufs_hba *hba,
enum ufs_notify_change_status);
int (*link_startup_notify)(struct ufs_hba *hba,
@@ -903,6 +905,15 @@ static inline int ufshcd_ops_init(struct ufs_hba *hba)
return 0;
}
static inline int ufshcd_ops_get_max_pwr_mode(struct ufs_hba *hba,
struct ufs_pwr_mode_info *max_pwr_info)
{
if (hba->ops && hba->ops->get_max_pwr_mode)
return hba->ops->get_max_pwr_mode(hba, max_pwr_info);
return 0;
}
static inline int ufshcd_ops_hce_enable_notify(struct ufs_hba *hba,
bool status)
{