Merge "msm: pci: print PCIE LTSSM state at DRV suspend and resume" (c626c54f) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/pci/controller/pci-msm.c

+11 −1

Original line number	Original line	Diff line number	Diff line
	// SPDX-License-Identifier: GPL-2.0-only		// SPDX-License-Identifier: GPL-2.0-only
	/* Copyright (c) 2014-2020, The Linux Foundation. All rights reserved.*/		/* Copyright (c) 2014-2021, The Linux Foundation. All rights reserved.*/

	#include <dt-bindings/regulator/qcom,rpmh-regulator-levels.h>		#include <dt-bindings/regulator/qcom,rpmh-regulator-levels.h>
	#include <linux/bitops.h>		#include <linux/bitops.h>
	@@ -7494,6 +7494,7 @@ static int msm_pcie_drv_resume(struct msm_pcie_dev_t *pcie_dev)
	struct msm_pcie_clk_info_t *clk_info;		struct msm_pcie_clk_info_t *clk_info;
	u32 current_link_speed;		u32 current_link_speed;
	int ret, i;		int ret, i;
			u32 val;

	mutex_lock(&pcie_dev->recovery_lock);		mutex_lock(&pcie_dev->recovery_lock);
	mutex_lock(&pcie_dev->setup_lock);		mutex_lock(&pcie_dev->setup_lock);
	@@ -7570,6 +7571,10 @@ static int msm_pcie_drv_resume(struct msm_pcie_dev_t *pcie_dev)

	enable_irq(pcie_dev->irq[MSM_PCIE_INT_GLOBAL_INT].num);		enable_irq(pcie_dev->irq[MSM_PCIE_INT_GLOBAL_INT].num);

			val = readl_relaxed(pcie_dev->parf + PCIE20_PARF_LTSSM);
			PCIE_DBG(pcie_dev, "PCIe RC%d: LTSSM_STATE: %s\n",
			pcie_dev->rc_idx, TO_LTSSM_STR(val & 0x3f));

	mutex_unlock(&pcie_dev->setup_lock);		mutex_unlock(&pcie_dev->setup_lock);
	mutex_unlock(&pcie_dev->recovery_lock);		mutex_unlock(&pcie_dev->recovery_lock);

	@@ -7585,6 +7590,7 @@ static int msm_pcie_drv_suspend(struct msm_pcie_dev_t *pcie_dev,
	struct msm_pcie_drv_tre *pkt = &drv_enable->pkt;		struct msm_pcie_drv_tre *pkt = &drv_enable->pkt;
	struct msm_pcie_clk_info_t *clk_info;		struct msm_pcie_clk_info_t *clk_info;
	int ret, i;		int ret, i;
			u32 val;

	if (!rpdev) {		if (!rpdev) {
	PCIE_ERR(pcie_dev, "PCIe: RC%d: DRV: no rpmsg device\n",		PCIE_ERR(pcie_dev, "PCIe: RC%d: DRV: no rpmsg device\n",
	@@ -7616,6 +7622,10 @@ static int msm_pcie_drv_suspend(struct msm_pcie_dev_t *pcie_dev,
	if (unlikely(drv_info->seq == MSM_PCIE_DRV_SEQ_RESV))		if (unlikely(drv_info->seq == MSM_PCIE_DRV_SEQ_RESV))
	drv_info->seq = 0;		drv_info->seq = 0;

			val = readl_relaxed(pcie_dev->parf + PCIE20_PARF_LTSSM);
			PCIE_DBG(pcie_dev, "PCIe RC%d: LTSSM_STATE: %s\n",
			pcie_dev->rc_idx, TO_LTSSM_STR(val & 0x3f));

	ret = rpmsg_trysend(rpdev->ept, drv_enable, sizeof(*drv_enable));		ret = rpmsg_trysend(rpdev->ept, drv_enable, sizeof(*drv_enable));
	if (ret) {		if (ret) {
	PCIE_ERR(pcie_dev, "PCIe: RC%d: DRV: failed to send rpmsg\n",		PCIE_ERR(pcie_dev, "PCIe: RC%d: DRV: failed to send rpmsg\n",