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[3/6] platform/x86/intel/tpmi: Modify external interface to get read/write state

Message ID 20231128185605.3027653-4-srinivas.pandruvada@linux.intel.com (mailing list archive)
State Changes Requested, archived
Headers show
Series TPMI update for new defines and permissions | expand

Commit Message

Srinivas Pandruvada Nov. 28, 2023, 6:56 p.m. UTC
Modify the external interface tpmi_get_feature_status() to get read
and write blocked instead of locked and disabled. Since auxiliary device
is not created when disabled, no use of returning disabled state. Also
locked state is not useful as feature driver can't use locked state
in a meaningful way.

Using read and write state, feature driver can decide which operations
to restrict for that feature.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
 drivers/platform/x86/intel/tpmi.c | 8 ++++----
 include/linux/intel_tpmi.h        | 5 ++---
 2 files changed, 6 insertions(+), 7 deletions(-)

Comments

Ilpo Järvinen Nov. 30, 2023, 12:08 p.m. UTC | #1
On Tue, 28 Nov 2023, Srinivas Pandruvada wrote:

> Modify the external interface tpmi_get_feature_status() to get read
> and write blocked instead of locked and disabled. Since auxiliary device
> is not created when disabled, no use of returning disabled state. Also
> locked state is not useful as feature driver can't use locked state
> in a meaningful way.
> 
> Using read and write state, feature driver can decide which operations
> to restrict for that feature.
> 
> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
> ---
>  drivers/platform/x86/intel/tpmi.c | 8 ++++----
>  include/linux/intel_tpmi.h        | 5 ++---
>  2 files changed, 6 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/platform/x86/intel/tpmi.c b/drivers/platform/x86/intel/tpmi.c
> index 4edaa182db04..44773c210324 100644
> --- a/drivers/platform/x86/intel/tpmi.c
> +++ b/drivers/platform/x86/intel/tpmi.c
> @@ -351,8 +351,8 @@ static int tpmi_read_feature_status(struct intel_tpmi_info *tpmi_info, int featu
>  	return ret;
>  }
>  
> -int tpmi_get_feature_status(struct auxiliary_device *auxdev, int feature_id,
> -			    int *locked, int *disabled)
> +int tpmi_get_feature_status(struct auxiliary_device *auxdev,
> +			    int feature_id, int *read_blocked, int *write_blocked)

Noting down there's logical reversion of the parameters here as to me
locked sound similar to write_blocked and disabled likewise to 
read_blocked but since there are no users for this function so far
I suppose it's fine.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
diff mbox series

Patch

diff --git a/drivers/platform/x86/intel/tpmi.c b/drivers/platform/x86/intel/tpmi.c
index 4edaa182db04..44773c210324 100644
--- a/drivers/platform/x86/intel/tpmi.c
+++ b/drivers/platform/x86/intel/tpmi.c
@@ -351,8 +351,8 @@  static int tpmi_read_feature_status(struct intel_tpmi_info *tpmi_info, int featu
 	return ret;
 }
 
-int tpmi_get_feature_status(struct auxiliary_device *auxdev, int feature_id,
-			    int *locked, int *disabled)
+int tpmi_get_feature_status(struct auxiliary_device *auxdev,
+			    int feature_id, int *read_blocked, int *write_blocked)
 {
 	struct intel_vsec_device *intel_vsec_dev = dev_to_ivdev(auxdev->dev.parent);
 	struct intel_tpmi_info *tpmi_info = auxiliary_get_drvdata(&intel_vsec_dev->auxdev);
@@ -363,8 +363,8 @@  int tpmi_get_feature_status(struct auxiliary_device *auxdev, int feature_id,
 	if (ret)
 		return ret;
 
-	*locked = feature_state.locked;
-	*disabled = !feature_state.enabled;
+	*read_blocked = feature_state.read_blocked;
+	*write_blocked = feature_state.write_blocked;
 
 	return 0;
 }
diff --git a/include/linux/intel_tpmi.h b/include/linux/intel_tpmi.h
index 939663bb095f..a240e15ef77f 100644
--- a/include/linux/intel_tpmi.h
+++ b/include/linux/intel_tpmi.h
@@ -38,7 +38,6 @@  struct intel_tpmi_plat_info {
 struct intel_tpmi_plat_info *tpmi_get_platform_data(struct auxiliary_device *auxdev);
 struct resource *tpmi_get_resource_at_index(struct auxiliary_device *auxdev, int index);
 int tpmi_get_resource_count(struct auxiliary_device *auxdev);
-
-int tpmi_get_feature_status(struct auxiliary_device *auxdev, int feature_id, int *locked,
-			    int *disabled);
+int tpmi_get_feature_status(struct auxiliary_device *auxdev, int feature_id, int *read_blocked,
+			    int *write_blocked);
 #endif