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Subject[PATCH v2 15/27] staging: ccree: use Makefile to include PM code
Date
Replace ugly ifdefs with some inline macros and Makefile magic
for optionally including power management related code for
better readability.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
---
drivers/staging/ccree/Makefile | 3 ++-
drivers/staging/ccree/ssi_pm.c | 9 +-------
drivers/staging/ccree/ssi_pm.h | 39 +++++++++++++++++++++++++++------
drivers/staging/ccree/ssi_request_mgr.c | 18 ++-------------
4 files changed, 37 insertions(+), 32 deletions(-)

diff --git a/drivers/staging/ccree/Makefile b/drivers/staging/ccree/Makefile
index bb47144..c107e25 100644
--- a/drivers/staging/ccree/Makefile
+++ b/drivers/staging/ccree/Makefile
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0

obj-$(CONFIG_CRYPTO_DEV_CCREE) := ccree.o
-ccree-y := ssi_driver.o ssi_buffer_mgr.o ssi_request_mgr.o ssi_cipher.o ssi_hash.o ssi_aead.o ssi_ivgen.o ssi_sram_mgr.o ssi_pm.o
+ccree-y := ssi_driver.o ssi_buffer_mgr.o ssi_request_mgr.o ssi_cipher.o ssi_hash.o ssi_aead.o ssi_ivgen.o ssi_sram_mgr.o
ccree-$(CONFIG_CRYPTO_FIPS) += ssi_fips.o
ccree-$(CONFIG_DEBUG_FS) += cc_debugfs.o
+ccree-$(CONFIG_PM) += ssi_pm.o
diff --git a/drivers/staging/ccree/ssi_pm.c b/drivers/staging/ccree/ssi_pm.c
index 4031881..b0ace75 100644
--- a/drivers/staging/ccree/ssi_pm.c
+++ b/drivers/staging/ccree/ssi_pm.c
@@ -14,8 +14,6 @@
#include "ssi_hash.h"
#include "ssi_pm.h"

-#if defined(CONFIG_PM)
-
#define POWER_DOWN_ENABLE 0x01
#define POWER_DOWN_DISABLE 0x00

@@ -103,12 +101,9 @@ int cc_pm_put_suspend(struct device *dev)
return rc;
}

-#endif
-
int cc_pm_init(struct cc_drvdata *drvdata)
{
int rc = 0;
-#if defined(CONFIG_PM)
struct device *dev = drvdata_to_dev(drvdata);

/* must be before the enabling to avoid resdundent suspending */
@@ -120,13 +115,11 @@ int cc_pm_init(struct cc_drvdata *drvdata)
return rc;
/* enable the PM module*/
pm_runtime_enable(dev);
-#endif
+
return rc;
}

void cc_pm_fini(struct cc_drvdata *drvdata)
{
-#if defined(CONFIG_PM)
pm_runtime_disable(drvdata_to_dev(drvdata));
-#endif
}
diff --git a/drivers/staging/ccree/ssi_pm.h b/drivers/staging/ccree/ssi_pm.h
index 138de71..c28f3aa 100644
--- a/drivers/staging/ccree/ssi_pm.h
+++ b/drivers/staging/ccree/ssi_pm.h
@@ -11,21 +11,46 @@

#define CC_SUSPEND_TIMEOUT 3000

-int cc_pm_init(struct cc_drvdata *drvdata);
-
-void cc_pm_fini(struct cc_drvdata *drvdata);
-
#if defined(CONFIG_PM)

extern const struct dev_pm_ops ccree_pm;

+int cc_pm_init(struct cc_drvdata *drvdata);
+void cc_pm_fini(struct cc_drvdata *drvdata);
int cc_pm_suspend(struct device *dev);
-
int cc_pm_resume(struct device *dev);
-
int cc_pm_get(struct device *dev);
-
int cc_pm_put_suspend(struct device *dev);
+
+#else
+
+static inline int cc_pm_init(struct cc_drvdata *drvdata)
+{
+ return 0;
+}
+
+static inline void cc_pm_fini(struct cc_drvdata *drvdata) {}
+
+static inline int cc_pm_suspend(struct device *dev)
+{
+ return 0;
+}
+
+static inline int cc_pm_resume(struct device *dev)
+{
+ return 0;
+}
+
+static inline int cc_pm_get(struct device *dev)
+{
+ return 0;
+}
+
+static inline int cc_pm_put_suspend(struct device *dev)
+{
+ return 0;
+}
+
#endif

#endif /*__POWER_MGR_H__*/
diff --git a/drivers/staging/ccree/ssi_request_mgr.c b/drivers/staging/ccree/ssi_request_mgr.c
index e99c148..01f4756 100644
--- a/drivers/staging/ccree/ssi_request_mgr.c
+++ b/drivers/staging/ccree/ssi_request_mgr.c
@@ -46,9 +46,7 @@ struct cc_req_mgr_handle {
#else
struct tasklet_struct comptask;
#endif
-#if defined(CONFIG_PM)
bool is_runtime_suspended;
-#endif
};

struct cc_bl_item {
@@ -404,9 +402,7 @@ static void cc_proc_backlog(struct cc_drvdata *drvdata)
spin_unlock(&mgr->hw_lock);

if (rc != -EINPROGRESS) {
-#if defined(CONFIG_PM)
cc_pm_put_suspend(dev);
-#endif
creq->user_cb(dev, req, rc);
}

@@ -432,13 +428,12 @@ int cc_send_request(struct cc_drvdata *drvdata, struct cc_crypto_req *cc_req,
gfp_t flags = cc_gfp_flags(req);
struct cc_bl_item *bli;

-#if defined(CONFIG_PM)
rc = cc_pm_get(dev);
if (rc) {
dev_err(dev, "ssi_power_mgr_runtime_get returned %x\n", rc);
return rc;
}
-#endif
+
spin_lock_bh(&mgr->hw_lock);
rc = cc_queues_status(drvdata, mgr, total_len);

@@ -452,9 +447,7 @@ int cc_send_request(struct cc_drvdata *drvdata, struct cc_crypto_req *cc_req,

bli = kmalloc(sizeof(*bli), flags);
if (!bli) {
-#if defined(CONFIG_PM)
cc_pm_put_suspend(dev);
-#endif
return -ENOMEM;
}

@@ -486,13 +479,12 @@ int cc_send_sync_request(struct cc_drvdata *drvdata,
cc_req->user_cb = request_mgr_complete;
cc_req->user_arg = &cc_req->seq_compl;

-#if defined(CONFIG_PM)
rc = cc_pm_get(dev);
if (rc) {
dev_err(dev, "ssi_power_mgr_runtime_get returned %x\n", rc);
return rc;
}
-#endif
+
while (true) {
spin_lock_bh(&mgr->hw_lock);
rc = cc_queues_status(drvdata, mgr, len + 1);
@@ -502,9 +494,7 @@ int cc_send_sync_request(struct cc_drvdata *drvdata,

spin_unlock_bh(&mgr->hw_lock);
if (rc != -EAGAIN) {
-#if defined(CONFIG_PM)
cc_pm_put_suspend(dev);
-#endif
return rc;
}
wait_for_completion_interruptible(&drvdata->hw_queue_avail);
@@ -515,9 +505,7 @@ int cc_send_sync_request(struct cc_drvdata *drvdata,
spin_unlock_bh(&mgr->hw_lock);

if (rc != -EINPROGRESS) {
-#if defined(CONFIG_PM)
cc_pm_put_suspend(dev);
-#endif
return rc;
}

@@ -621,9 +609,7 @@ static void proc_completions(struct cc_drvdata *drvdata)
dev_dbg(dev, "Dequeue request tail=%u\n", *tail);
dev_dbg(dev, "Request completed. axi_completed=%d\n",
request_mgr_handle->axi_completed);
-#if defined(CONFIG_PM)
cc_pm_put_suspend(dev);
-#endif
}
}

--
2.7.4
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