diff options
Diffstat (limited to 'drivers/staging/ccree/ssi_pm.c')
-rw-r--r-- | drivers/staging/ccree/ssi_pm.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/drivers/staging/ccree/ssi_pm.c b/drivers/staging/ccree/ssi_pm.c deleted file mode 100644 index 36a498098a70..000000000000 --- a/drivers/staging/ccree/ssi_pm.c +++ /dev/null @@ -1,145 +0,0 @@ -/* - * Copyright (C) 2012-2017 ARM Limited or its affiliates. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "ssi_config.h" -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <crypto/ctr.h> -#include <linux/pm_runtime.h> -#include "ssi_driver.h" -#include "ssi_buffer_mgr.h" -#include "ssi_request_mgr.h" -#include "ssi_sram_mgr.h" -#include "ssi_sysfs.h" -#include "ssi_ivgen.h" -#include "ssi_hash.h" -#include "ssi_pm.h" - -#if defined(CONFIG_PM_RUNTIME) || defined(CONFIG_PM_SLEEP) - -#define POWER_DOWN_ENABLE 0x01 -#define POWER_DOWN_DISABLE 0x00 - -int ssi_power_mgr_runtime_suspend(struct device *dev) -{ - struct ssi_drvdata *drvdata = - (struct ssi_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 = ssi_request_mgr_runtime_suspend_queue(drvdata); - if (rc != 0) { - dev_err(dev, "ssi_request_mgr_runtime_suspend_queue (%x)\n", - rc); - return rc; - } - fini_cc_regs(drvdata); - cc_clk_off(drvdata); - return 0; -} - -int ssi_power_mgr_runtime_resume(struct device *dev) -{ - int rc; - struct ssi_drvdata *drvdata = - (struct ssi_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 != 0) { - dev_err(dev, "init_cc_regs (%x)\n", rc); - return rc; - } - - rc = ssi_request_mgr_runtime_resume_queue(drvdata); - if (rc != 0) { - dev_err(dev, "ssi_request_mgr_runtime_resume_queue (%x)\n", rc); - return rc; - } - - /* must be after the queue resuming as it uses the HW queue*/ - ssi_hash_init_sram_digest_consts(drvdata); - - ssi_ivgen_init_sram_pool(drvdata); - return 0; -} - -int ssi_power_mgr_runtime_get(struct device *dev) -{ - int rc = 0; - - if (ssi_request_mgr_is_queue_runtime_suspend( - (struct ssi_drvdata *)dev_get_drvdata(dev))) { - rc = pm_runtime_get_sync(dev); - } else { - pm_runtime_get_noresume(dev); - } - return rc; -} - -int ssi_power_mgr_runtime_put_suspend(struct device *dev) -{ - int rc = 0; - - if (!ssi_request_mgr_is_queue_runtime_suspend( - (struct ssi_drvdata *)dev_get_drvdata(dev))) { - 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; -} - -#endif - -int ssi_power_mgr_init(struct ssi_drvdata *drvdata) -{ - int rc = 0; -#if defined(CONFIG_PM_RUNTIME) || defined(CONFIG_PM_SLEEP) - struct device *dev = drvdata_to_dev(drvdata); - - /* must be before the enabling to avoid resdundent suspending */ - pm_runtime_set_autosuspend_delay(dev, SSI_SUSPEND_TIMEOUT); - pm_runtime_use_autosuspend(dev); - /* activate the PM module */ - rc = pm_runtime_set_active(dev); - if (rc != 0) - return rc; - /* enable the PM module*/ - pm_runtime_enable(dev); -#endif - return rc; -} - -void ssi_power_mgr_fini(struct ssi_drvdata *drvdata) -{ -#if defined(CONFIG_PM_RUNTIME) || defined(CONFIG_PM_SLEEP) - pm_runtime_disable(drvdata_to_dev(drvdata)); -#endif -} |