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Commit 2a397f2d authored by zhaochen's avatar zhaochen
Browse files

msm: pcie: Add power on pins for PCI-E client device 



Some pci-e client device need to be enabled power before
doing enumerate, so add this power enable pin config in
pci-e controller driver.

Change-Id: Ied48bfa78c7fc33cc90222c9fa856f74df673518
Signed-off-by: default avatarzhaochen <zhaochen@codeaurora.org>
parent 1376150f

drivers/pci/host/pci-msm.c

+17 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.

/* Copyright (c) 2014-2019, 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
@@ -633,6 +633,7 @@ struct msm_pcie_dev_t { 
	bool				use_pinctrl;

	struct pinctrl			*pinctrl;

	struct pinctrl_state		*pins_default;

	struct pinctrl_state            *pins_power_on;

	struct pinctrl_state		*pins_sleep;

	struct msm_pcie_device_info   pcidev_table[MAX_DEVICE_NUM];

};
@@ -6012,6 +6013,16 @@ static int msm_pcie_probe(struct platform_device *pdev) 
			msm_pcie_dev[rc_idx].pins_default = NULL;

		}



		msm_pcie_dev[rc_idx].pins_power_on =

		pinctrl_lookup_state(msm_pcie_dev[rc_idx].pinctrl,

				"slot_power_on");

		if (IS_ERR(msm_pcie_dev[rc_idx].pins_power_on)) {

			PCIE_ERR(&msm_pcie_dev[rc_idx],

				"PCIe: RC%d could not get pinctrl power_on state\n",

				rc_idx);

			msm_pcie_dev[rc_idx].pins_power_on = NULL;

		}



		msm_pcie_dev[rc_idx].pins_sleep =

			pinctrl_lookup_state(msm_pcie_dev[rc_idx].pinctrl,

						"sleep");
@@ -6039,6 +6050,11 @@ static int msm_pcie_probe(struct platform_device *pdev) 
	msm_pcie_sysfs_init(&msm_pcie_dev[rc_idx]);



	msm_pcie_dev[rc_idx].drv_ready = true;

	if (msm_pcie_dev[rc_idx].use_pinctrl &&

		msm_pcie_dev[rc_idx].pins_power_on) {

		pinctrl_select_state(msm_pcie_dev[rc_idx].pinctrl,

			msm_pcie_dev[rc_idx].pins_power_on);

	}



	if (msm_pcie_dev[rc_idx].boot_option &

			MSM_PCIE_NO_PROBE_ENUMERATION) {