mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/crypto/ccree/cc_pm.c
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@@ -1,5 +1,5 @@
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 // SPDX-License-Identifier: GPL-2.0
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-/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
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+/* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */
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 #include <linux/kernel.h>
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 #include <linux/interrupt.h>
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@@ -8,7 +8,6 @@
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 #include "cc_buffer_mgr.h"
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 #include "cc_request_mgr.h"
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 #include "cc_sram_mgr.h"
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-#include "cc_ivgen.h"
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 #include "cc_hash.h"
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 #include "cc_pm.h"
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 #include "cc_fips.h"
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@@ -16,32 +15,33 @@
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 #define POWER_DOWN_ENABLE 0x01
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 #define POWER_DOWN_DISABLE 0x00
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-const struct dev_pm_ops ccree_pm = {
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-	SET_RUNTIME_PM_OPS(cc_pm_suspend, cc_pm_resume, NULL)
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-};
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-
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-int cc_pm_suspend(struct device *dev)
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+static int cc_pm_suspend(struct device *dev)
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 {
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 	struct cc_drvdata *drvdata = dev_get_drvdata(dev);
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 	dev_dbg(dev, "set HOST_POWER_DOWN_EN\n");
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 	fini_cc_regs(drvdata);
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 	cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_ENABLE);
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-	cc_clk_off(drvdata);
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+	clk_disable_unprepare(drvdata->clk);
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 	return 0;
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 }
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-int cc_pm_resume(struct device *dev)
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+static int cc_pm_resume(struct device *dev)
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 {
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 	int rc;
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 	struct cc_drvdata *drvdata = dev_get_drvdata(dev);
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 	dev_dbg(dev, "unset HOST_POWER_DOWN_EN\n");
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 	/* Enables the device source clk */
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-	rc = cc_clk_on(drvdata);
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+	rc = clk_prepare_enable(drvdata->clk);
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 	if (rc) {
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 		dev_err(dev, "failed getting clock back on. We're toast.\n");
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 		return rc;
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+	}
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+	/* wait for Cryptocell reset completion */
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+	if (!cc_wait_for_reset_completion(drvdata)) {
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+		dev_err(dev, "Cryptocell reset not completed");
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+		return -EBUSY;
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 	}
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 	cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_DISABLE);
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@@ -55,54 +55,26 @@
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 	cc_init_hash_sram(drvdata);
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-	cc_init_iv_sram(drvdata);
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 	return 0;
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 }
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+const struct dev_pm_ops ccree_pm = {
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+	SET_RUNTIME_PM_OPS(cc_pm_suspend, cc_pm_resume, NULL)
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+};
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+
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 int cc_pm_get(struct device *dev)
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 {
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-	int rc = 0;
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-	struct cc_drvdata *drvdata = dev_get_drvdata(dev);
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-
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-	if (drvdata->pm_on)
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-		rc = pm_runtime_get_sync(dev);
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-
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-	return (rc == 1 ? 0 : rc);
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-}
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-
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-int cc_pm_put_suspend(struct device *dev)
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-{
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-	int rc = 0;
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-	struct cc_drvdata *drvdata = dev_get_drvdata(dev);
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-
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-	if (drvdata->pm_on) {
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-		pm_runtime_mark_last_busy(dev);
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-		rc = pm_runtime_put_autosuspend(dev);
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+	int rc = pm_runtime_get_sync(dev);
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+	if (rc < 0) {
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+		pm_runtime_put_noidle(dev);
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+		return rc;
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 	}
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-	return rc;
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+	return 0;
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 }
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-int cc_pm_init(struct cc_drvdata *drvdata)
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+void cc_pm_put_suspend(struct device *dev)
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 {
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-	struct device *dev = drvdata_to_dev(drvdata);
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-
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-	/* must be before the enabling to avoid resdundent suspending */
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-	pm_runtime_set_autosuspend_delay(dev, CC_SUSPEND_TIMEOUT);
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-	pm_runtime_use_autosuspend(dev);
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-	/* set us as active - note we won't do PM ops until cc_pm_go()! */
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-	return pm_runtime_set_active(dev);
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-}
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-
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-/* enable the PM module*/
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-void cc_pm_go(struct cc_drvdata *drvdata)
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-{
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-	pm_runtime_enable(drvdata_to_dev(drvdata));
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-	drvdata->pm_on = true;
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-}
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-
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-void cc_pm_fini(struct cc_drvdata *drvdata)
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-{
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-	pm_runtime_disable(drvdata_to_dev(drvdata));
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-	drvdata->pm_on = false;
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+	pm_runtime_mark_last_busy(dev);
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+	pm_runtime_put_autosuspend(dev);
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 }