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path: root/drivers/staging/ccree/cc_pm.c
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Diffstat (limited to 'drivers/staging/ccree/cc_pm.c')
-rw-r--r--drivers/staging/ccree/cc_pm.c122
1 files changed, 0 insertions, 122 deletions
diff --git a/drivers/staging/ccree/cc_pm.c b/drivers/staging/ccree/cc_pm.c
deleted file mode 100644
index d990f472e89f..000000000000
--- a/drivers/staging/ccree/cc_pm.c
+++ /dev/null
@@ -1,122 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
-
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/pm_runtime.h>
-#include "cc_driver.h"
-#include "cc_buffer_mgr.h"
-#include "cc_request_mgr.h"
-#include "cc_sram_mgr.h"
-#include "cc_ivgen.h"
-#include "cc_hash.h"
-#include "cc_pm.h"
-
-#define POWER_DOWN_ENABLE 0x01
-#define POWER_DOWN_DISABLE 0x00
-
-const struct dev_pm_ops ccree_pm = {
- SET_RUNTIME_PM_OPS(cc_pm_suspend, cc_pm_resume, NULL)
-};
-
-int cc_pm_suspend(struct device *dev)
-{
- struct cc_drvdata *drvdata = dev_get_drvdata(dev);
- int rc;
-
- dev_dbg(dev, "set HOST_POWER_DOWN_EN\n");
- cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_ENABLE);
- rc = cc_suspend_req_queue(drvdata);
- if (rc) {
- dev_err(dev, "cc_suspend_req_queue (%x)\n", rc);
- return rc;
- }
- fini_cc_regs(drvdata);
- cc_clk_off(drvdata);
- return 0;
-}
-
-int cc_pm_resume(struct device *dev)
-{
- int rc;
- struct cc_drvdata *drvdata = dev_get_drvdata(dev);
-
- dev_dbg(dev, "unset HOST_POWER_DOWN_EN\n");
- cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_DISABLE);
-
- rc = cc_clk_on(drvdata);
- if (rc) {
- dev_err(dev, "failed getting clock back on. We're toast.\n");
- return rc;
- }
-
- rc = init_cc_regs(drvdata, false);
- if (rc) {
- dev_err(dev, "init_cc_regs (%x)\n", rc);
- return rc;
- }
-
- rc = cc_resume_req_queue(drvdata);
- if (rc) {
- dev_err(dev, "cc_resume_req_queue (%x)\n", rc);
- return rc;
- }
-
- /* must be after the queue resuming as it uses the HW queue*/
- cc_init_hash_sram(drvdata);
-
- cc_init_iv_sram(drvdata);
- return 0;
-}
-
-int cc_pm_get(struct device *dev)
-{
- int rc = 0;
- struct cc_drvdata *drvdata = dev_get_drvdata(dev);
-
- if (cc_req_queue_suspended(drvdata))
- rc = pm_runtime_get_sync(dev);
- else
- pm_runtime_get_noresume(dev);
-
- return rc;
-}
-
-int cc_pm_put_suspend(struct device *dev)
-{
- int rc = 0;
- struct cc_drvdata *drvdata = dev_get_drvdata(dev);
-
- if (!cc_req_queue_suspended(drvdata)) {
- pm_runtime_mark_last_busy(dev);
- rc = pm_runtime_put_autosuspend(dev);
- } else {
- /* Something wrong happens*/
- dev_err(dev, "request to suspend already suspended queue");
- rc = -EBUSY;
- }
- return rc;
-}
-
-int cc_pm_init(struct cc_drvdata *drvdata)
-{
- int rc = 0;
- struct device *dev = drvdata_to_dev(drvdata);
-
- /* must be before the enabling to avoid resdundent suspending */
- pm_runtime_set_autosuspend_delay(dev, CC_SUSPEND_TIMEOUT);
- pm_runtime_use_autosuspend(dev);
- /* activate the PM module */
- rc = pm_runtime_set_active(dev);
- if (rc)
- return rc;
- /* enable the PM module*/
- pm_runtime_enable(dev);
-
- return rc;
-}
-
-void cc_pm_fini(struct cc_drvdata *drvdata)
-{
- pm_runtime_disable(drvdata_to_dev(drvdata));
-}