diff options
Diffstat (limited to 'drivers/staging/ccree/cc_pm.c')
-rw-r--r-- | drivers/staging/ccree/cc_pm.c | 122 |
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)); -} |