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coresight: syscfg: Add API to activate and enable configurations

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Configurations are first activated, then when any coresight device is
enabled, the active configurations are checked and any matching
one is enabled.

This patch provides the activation / enable API.

Link: https://lore.kernel.org/r/20210723165444.1048-6-mike.leach@linaro.org
Signed-off-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20210818194022.379573-6-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mike Leach
2021-08-18 13:40:16 -06:00
committed by Greg Kroah-Hartman
parent 94d2bac540
commit f8cce2ff3c
4 changed files with 227 additions and 0 deletions
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2
include/linux/coresight.h
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@@ -223,6 +223,7 @@ struct coresight_sysfs_link {
* @feature_csdev_list: List of complex feature programming added to the device.
* @config_csdev_list: List of system configurations added to the device.
* @cscfg_csdev_lock: Protect the lists of configurations and features.
* @active_cscfg_ctxt: Context information for current active system configuration.
*/
struct coresight_device {
struct coresight_platform_data *pdata;
@@ -248,6 +249,7 @@ struct coresight_device {
struct list_head feature_csdev_list;
struct list_head config_csdev_list;
spinlock_t cscfg_csdev_lock;
void *active_cscfg_ctxt;
};
/*