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path: root/drivers/crypto/ccree
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Diffstat (limited to 'drivers/crypto/ccree')
-rw-r--r--drivers/crypto/ccree/cc_driver.c43
-rw-r--r--drivers/crypto/ccree/cc_driver.h1
-rw-r--r--drivers/crypto/ccree/cc_pm.c38
-rw-r--r--drivers/crypto/ccree/cc_pm.h12
4 files changed, 29 insertions, 65 deletions
diff --git a/drivers/crypto/ccree/cc_driver.c b/drivers/crypto/ccree/cc_driver.c
index a7b7f65939e2..c7e44f212d4b 100644
--- a/drivers/crypto/ccree/cc_driver.c
+++ b/drivers/crypto/ccree/cc_driver.c
@@ -14,6 +14,7 @@
#include <linux/of.h>
#include <linux/clk.h>
#include <linux/of_address.h>
+#include <linux/pm_runtime.h>
#include "cc_driver.h"
#include "cc_request_mgr.h"
@@ -360,6 +361,16 @@ static int init_cc_resources(struct platform_device *plat_dev)
new_drvdata->sec_disabled = cc_sec_disable;
+ pm_runtime_set_autosuspend_delay(dev, CC_SUSPEND_TIMEOUT);
+ pm_runtime_use_autosuspend(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ rc = pm_runtime_get_sync(dev);
+ if (rc < 0) {
+ dev_err(dev, "pm_runtime_get_sync() failed: %d\n", rc);
+ goto post_pm_err;
+ }
+
/* wait for Crytpcell reset completion */
if (!cc_wait_for_reset_completion(new_drvdata)) {
dev_err(dev, "Cryptocell reset not completed");
@@ -372,7 +383,7 @@ static int init_cc_resources(struct platform_device *plat_dev)
dev_err(dev, "Invalid CC signature: SIGNATURE=0x%08X != expected=0x%08X\n",
val, hw_rev->sig);
rc = -EINVAL;
- goto post_clk_err;
+ goto post_pm_err;
}
sig_cidr = val;
hw_rev_pidr = cc_ioread(new_drvdata, new_drvdata->ver_offset);
@@ -383,7 +394,7 @@ static int init_cc_resources(struct platform_device *plat_dev)
dev_err(dev, "Invalid CC PIDR: PIDR0124=0x%08X != expected=0x%08X\n",
val, hw_rev->pidr_0124);
rc = -EINVAL;
- goto post_clk_err;
+ goto post_pm_err;
}
hw_rev_pidr = val;
@@ -392,7 +403,7 @@ static int init_cc_resources(struct platform_device *plat_dev)
dev_err(dev, "Invalid CC CIDR: CIDR0123=0x%08X != expected=0x%08X\n",
val, hw_rev->cidr_0123);
rc = -EINVAL;
- goto post_clk_err;
+ goto post_pm_err;
}
sig_cidr = val;
@@ -411,7 +422,7 @@ static int init_cc_resources(struct platform_device *plat_dev)
default:
dev_err(dev, "Unsupported engines configuration.\n");
rc = -EINVAL;
- goto post_clk_err;
+ goto post_pm_err;
}
/* Check security disable state */
@@ -437,14 +448,14 @@ static int init_cc_resources(struct platform_device *plat_dev)
new_drvdata);
if (rc) {
dev_err(dev, "Could not register to interrupt %d\n", irq);
- goto post_clk_err;
+ goto post_pm_err;
}
dev_dbg(dev, "Registered to IRQ: %d\n", irq);
rc = init_cc_regs(new_drvdata, true);
if (rc) {
dev_err(dev, "init_cc_regs failed\n");
- goto post_clk_err;
+ goto post_pm_err;
}
rc = cc_debugfs_init(new_drvdata);
@@ -483,12 +494,6 @@ static int init_cc_resources(struct platform_device *plat_dev)
goto post_req_mgr_err;
}
- rc = cc_pm_init(new_drvdata);
- if (rc) {
- dev_err(dev, "cc_pm_init failed\n");
- goto post_buf_mgr_err;
- }
-
/* Allocate crypto algs */
rc = cc_cipher_alloc(new_drvdata);
if (rc) {
@@ -509,15 +514,13 @@ static int init_cc_resources(struct platform_device *plat_dev)
goto post_hash_err;
}
- /* All set, we can allow autosuspend */
- cc_pm_go(new_drvdata);
-
/* If we got here and FIPS mode is enabled
* it means all FIPS test passed, so let TEE
* know we're good.
*/
cc_set_ree_fips_status(new_drvdata, true);
+ pm_runtime_put(dev);
return 0;
post_hash_err:
@@ -534,7 +537,10 @@ post_debugfs_err:
cc_debugfs_fini(new_drvdata);
post_regs_err:
fini_cc_regs(new_drvdata);
-post_clk_err:
+post_pm_err:
+ pm_runtime_put_noidle(dev);
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
clk_disable_unprepare(new_drvdata->clk);
return rc;
}
@@ -547,18 +553,21 @@ void fini_cc_regs(struct cc_drvdata *drvdata)
static void cleanup_cc_resources(struct platform_device *plat_dev)
{
+ struct device *dev = &plat_dev->dev;
struct cc_drvdata *drvdata =
(struct cc_drvdata *)platform_get_drvdata(plat_dev);
cc_aead_free(drvdata);
cc_hash_free(drvdata);
cc_cipher_free(drvdata);
- cc_pm_fini(drvdata);
cc_buffer_mgr_fini(drvdata);
cc_req_mgr_fini(drvdata);
cc_fips_fini(drvdata);
cc_debugfs_fini(drvdata);
fini_cc_regs(drvdata);
+ pm_runtime_put_noidle(dev);
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
clk_disable_unprepare(drvdata->clk);
}
diff --git a/drivers/crypto/ccree/cc_driver.h b/drivers/crypto/ccree/cc_driver.h
index d7928b164a3b..9e94a29d84ae 100644
--- a/drivers/crypto/ccree/cc_driver.h
+++ b/drivers/crypto/ccree/cc_driver.h
@@ -158,7 +158,6 @@ struct cc_drvdata {
int std_bodies;
bool sec_disabled;
u32 comp_mask;
- bool pm_on;
};
struct cc_crypto_alg {
diff --git a/drivers/crypto/ccree/cc_pm.c b/drivers/crypto/ccree/cc_pm.c
index 81376173c3ec..f7729fc1ee59 100644
--- a/drivers/crypto/ccree/cc_pm.c
+++ b/drivers/crypto/ccree/cc_pm.c
@@ -64,23 +64,15 @@ int cc_pm_resume(struct device *dev)
int cc_pm_get(struct device *dev)
{
- int rc = 0;
- struct cc_drvdata *drvdata = dev_get_drvdata(dev);
-
- if (drvdata->pm_on)
- rc = pm_runtime_get_sync(dev);
+ int rc = pm_runtime_get_sync(dev);
return (rc == 1 ? 0 : rc);
}
void cc_pm_put_suspend(struct device *dev)
{
- struct cc_drvdata *drvdata = dev_get_drvdata(dev);
-
- if (drvdata->pm_on) {
- pm_runtime_mark_last_busy(dev);
- pm_runtime_put_autosuspend(dev);
- }
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
}
bool cc_pm_is_dev_suspended(struct device *dev)
@@ -88,27 +80,3 @@ bool cc_pm_is_dev_suspended(struct device *dev)
/* check device state using runtime api */
return pm_runtime_suspended(dev);
}
-
-int cc_pm_init(struct cc_drvdata *drvdata)
-{
- struct device *dev = drvdata_to_dev(drvdata);
-
- /* must be before the enabling to avoid redundant suspending */
- pm_runtime_set_autosuspend_delay(dev, CC_SUSPEND_TIMEOUT);
- pm_runtime_use_autosuspend(dev);
- /* set us as active - note we won't do PM ops until cc_pm_go()! */
- return pm_runtime_set_active(dev);
-}
-
-/* enable the PM module*/
-void cc_pm_go(struct cc_drvdata *drvdata)
-{
- pm_runtime_enable(drvdata_to_dev(drvdata));
- drvdata->pm_on = true;
-}
-
-void cc_pm_fini(struct cc_drvdata *drvdata)
-{
- pm_runtime_disable(drvdata_to_dev(drvdata));
- drvdata->pm_on = false;
-}
diff --git a/drivers/crypto/ccree/cc_pm.h b/drivers/crypto/ccree/cc_pm.h
index 80a18e11cae4..2dcf53fa108e 100644
--- a/drivers/crypto/ccree/cc_pm.h
+++ b/drivers/crypto/ccree/cc_pm.h
@@ -15,9 +15,6 @@
extern const struct dev_pm_ops ccree_pm;
-int cc_pm_init(struct cc_drvdata *drvdata);
-void cc_pm_go(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);
@@ -26,15 +23,6 @@ bool cc_pm_is_dev_suspended(struct device *dev);
#else
-static inline int cc_pm_init(struct cc_drvdata *drvdata)
-{
- return 0;
-}
-
-static inline void cc_pm_go(struct cc_drvdata *drvdata) {}
-
-static inline void cc_pm_fini(struct cc_drvdata *drvdata) {}
-
static inline int cc_pm_get(struct device *dev)
{
return 0;
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-21 19:15:48 +0300