Merge "msm: mhi_dev: Disable/Enable interrupts during suspend/resume" (99351e70) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/platform/msm/mhi_dev/mhi.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -2376,8 +2376,10 @@ static void mhi_dev_enable(struct work_struct *work)
		return;
		}

		if (mhi_ctx->config_iatu \|\| mhi_ctx->mhi_int)
		if (mhi_ctx->config_iatu \|\| mhi_ctx->mhi_int) {
		mhi_ctx->mhi_int_en = true;
		enable_irq(mhi_ctx->mhi_irq);
		}

		mhi_update_state_info(MHI_DEV_UEVENT_CTRL,
		MHI_STATE_CONFIGURED);

drivers/platform/msm/mhi_dev/mhi.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -603,6 +603,7 @@ struct mhi_dev {

		/Register for interrupt/
		bool mhi_int;
		bool mhi_int_en;

		struct kobj_uevent_env kobj_env;
		};

drivers/platform/msm/mhi_dev/mhi_sm.c

+32 −1

Original line number	Diff line number	Diff line
		/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
		/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		@@ -19,6 +19,7 @@
		#include <linux/ipa_mhi.h>
		#include "mhi_hwio.h"
		#include "mhi_sm.h"
		#include <linux/interrupt.h>

		#define MHI_SM_DBG(fmt, args...) \
		mhi_log(MHI_MSG_DBG, fmt, ##args)
		@@ -776,6 +777,7 @@ static void mhi_sm_pcie_event_manager(struct work_struct *work)
		struct mhi_sm_ep_pcie_event *chg_event = container_of(work,
		struct mhi_sm_ep_pcie_event, work);
		enum ep_pcie_event pcie_event = chg_event->event;
		unsigned long flags;

		MHI_SM_FUNC_ENTRY();

		@@ -847,6 +849,15 @@ static void mhi_sm_pcie_event_manager(struct work_struct *work)

		mhi_dev_restore_mmio(mhi_sm_ctx->mhi_dev);

		spin_lock_irqsave(&mhi_sm_ctx->mhi_dev->lock, flags);
		if ((mhi_sm_ctx->mhi_dev->mhi_int) &&
		(!mhi_sm_ctx->mhi_dev->mhi_int_en)) {
		enable_irq(mhi_sm_ctx->mhi_dev->mhi_irq);
		mhi_sm_ctx->mhi_dev->mhi_int_en = true;
		MHI_SM_DBG("Enable MHI IRQ during PCIe DEAST");
		}
		spin_unlock_irqrestore(&mhi_sm_ctx->mhi_dev->lock, flags);

		res = ep_pcie_enable_endpoint(mhi_sm_ctx->mhi_dev->phandle,
		EP_PCIE_OPT_ENUM);
		if (res) {
		@@ -1142,6 +1153,7 @@ void mhi_dev_sm_pcie_handler(struct ep_pcie_notify *notify)
		{
		struct mhi_sm_ep_pcie_event *dstate_change_evt;
		enum ep_pcie_event event;
		unsigned long flags;

		MHI_SM_FUNC_ENTRY();

		@@ -1174,6 +1186,16 @@ void mhi_dev_sm_pcie_handler(struct ep_pcie_notify *notify)
		break;
		case EP_PCIE_EVENT_PM_D3_HOT:
		mhi_sm_ctx->stats.d3_hot_event_cnt++;

		spin_lock_irqsave(&mhi_sm_ctx->mhi_dev->lock, flags);
		if ((mhi_sm_ctx->mhi_dev->mhi_int) &&
		(mhi_sm_ctx->mhi_dev->mhi_int_en)) {
		disable_irq(mhi_sm_ctx->mhi_dev->mhi_irq);
		mhi_sm_ctx->mhi_dev->mhi_int_en = false;
		MHI_SM_DBG("Disable MHI IRQ during D3 HOT");
		}
		spin_unlock_irqrestore(&mhi_sm_ctx->mhi_dev->lock, flags);

		mhi_dev_backup_mmio(mhi_sm_ctx->mhi_dev);
		break;
		case EP_PCIE_EVENT_PM_RST_DEAST:
		@@ -1181,6 +1203,15 @@ void mhi_dev_sm_pcie_handler(struct ep_pcie_notify *notify)
		break;
		case EP_PCIE_EVENT_PM_D0:
		mhi_sm_ctx->stats.d0_event_cnt++;

		spin_lock_irqsave(&mhi_sm_ctx->mhi_dev->lock, flags);
		if ((mhi_sm_ctx->mhi_dev->mhi_int) &&
		(!mhi_sm_ctx->mhi_dev->mhi_int_en)) {
		enable_irq(mhi_sm_ctx->mhi_dev->mhi_irq);
		mhi_sm_ctx->mhi_dev->mhi_int_en = true;
		MHI_SM_DBG("Enable MHI IRQ during D0");
		}
		spin_unlock_irqrestore(&mhi_sm_ctx->mhi_dev->lock, flags);
		break;
		case EP_PCIE_EVENT_LINKDOWN:
		mhi_sm_ctx->stats.linkdown_event_cnt++;