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path: root/drivers/pci/host/pcie-qcom.c
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Diffstat (limited to 'drivers/pci/host/pcie-qcom.c')
-rw-r--r--drivers/pci/host/pcie-qcom.c753
1 files changed, 0 insertions, 753 deletions
diff --git a/drivers/pci/host/pcie-qcom.c b/drivers/pci/host/pcie-qcom.c
deleted file mode 100644
index 734ba0d4a5c8..000000000000
--- a/drivers/pci/host/pcie-qcom.c
+++ /dev/null
@@ -1,753 +0,0 @@
-/*
- * Qualcomm PCIe root complex driver
- *
- * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
- * Copyright 2015 Linaro Limited.
- *
- * Author: Stanimir Varbanov <svarbanov@mm-sol.com>
- *
- * 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
- * only 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.
- */
-
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/gpio.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/iopoll.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/of_device.h>
-#include <linux/of_gpio.h>
-#include <linux/pci.h>
-#include <linux/platform_device.h>
-#include <linux/phy/phy.h>
-#include <linux/regulator/consumer.h>
-#include <linux/reset.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-
-#include "pcie-designware.h"
-
-#define PCIE20_PARF_SYS_CTRL 0x00
-#define PCIE20_PARF_PHY_CTRL 0x40
-#define PCIE20_PARF_PHY_REFCLK 0x4C
-#define PCIE20_PARF_DBI_BASE_ADDR 0x168
-#define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16C
-#define PCIE20_PARF_MHI_CLOCK_RESET_CTRL 0x174
-#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178
-#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1A8
-#define PCIE20_PARF_LTSSM 0x1B0
-#define PCIE20_PARF_SID_OFFSET 0x234
-#define PCIE20_PARF_BDF_TRANSLATE_CFG 0x24C
-
-#define PCIE20_ELBI_SYS_CTRL 0x04
-#define PCIE20_ELBI_SYS_CTRL_LT_ENABLE BIT(0)
-
-#define PCIE20_CAP 0x70
-
-#define PERST_DELAY_US 1000
-
-struct qcom_pcie_resources_v0 {
- struct clk *iface_clk;
- struct clk *core_clk;
- struct clk *phy_clk;
- struct reset_control *pci_reset;
- struct reset_control *axi_reset;
- struct reset_control *ahb_reset;
- struct reset_control *por_reset;
- struct reset_control *phy_reset;
- struct regulator *vdda;
- struct regulator *vdda_phy;
- struct regulator *vdda_refclk;
-};
-
-struct qcom_pcie_resources_v1 {
- struct clk *iface;
- struct clk *aux;
- struct clk *master_bus;
- struct clk *slave_bus;
- struct reset_control *core;
- struct regulator *vdda;
-};
-
-struct qcom_pcie_resources_v2 {
- struct clk *aux_clk;
- struct clk *master_clk;
- struct clk *slave_clk;
- struct clk *cfg_clk;
- struct clk *pipe_clk;
-};
-
-union qcom_pcie_resources {
- struct qcom_pcie_resources_v0 v0;
- struct qcom_pcie_resources_v1 v1;
- struct qcom_pcie_resources_v2 v2;
-};
-
-struct qcom_pcie;
-
-struct qcom_pcie_ops {
- int (*get_resources)(struct qcom_pcie *pcie);
- int (*init)(struct qcom_pcie *pcie);
- int (*post_init)(struct qcom_pcie *pcie);
- void (*deinit)(struct qcom_pcie *pcie);
- void (*ltssm_enable)(struct qcom_pcie *pcie);
-};
-
-struct qcom_pcie {
- struct pcie_port pp; /* pp.dbi_base is DT dbi */
- void __iomem *parf; /* DT parf */
- void __iomem *elbi; /* DT elbi */
- union qcom_pcie_resources res;
- struct phy *phy;
- struct gpio_desc *reset;
- struct qcom_pcie_ops *ops;
-};
-
-#define to_qcom_pcie(x) container_of(x, struct qcom_pcie, pp)
-
-static void qcom_ep_reset_assert(struct qcom_pcie *pcie)
-{
- gpiod_set_value(pcie->reset, 1);
- usleep_range(PERST_DELAY_US, PERST_DELAY_US + 500);
-}
-
-static void qcom_ep_reset_deassert(struct qcom_pcie *pcie)
-{
- gpiod_set_value(pcie->reset, 0);
- usleep_range(PERST_DELAY_US, PERST_DELAY_US + 500);
-}
-
-static irqreturn_t qcom_pcie_msi_irq_handler(int irq, void *arg)
-{
- struct pcie_port *pp = arg;
-
- return dw_handle_msi_irq(pp);
-}
-
-static void qcom_pcie_v0_v1_ltssm_enable(struct qcom_pcie *pcie)
-{
- u32 val;
-
- /* enable link training */
- val = readl(pcie->elbi + PCIE20_ELBI_SYS_CTRL);
- val |= PCIE20_ELBI_SYS_CTRL_LT_ENABLE;
- writel(val, pcie->elbi + PCIE20_ELBI_SYS_CTRL);
-}
-
-static void qcom_pcie_v2_ltssm_enable(struct qcom_pcie *pcie)
-{
- u32 val;
-
- /* enable link training */
- val = readl(pcie->parf + PCIE20_PARF_LTSSM);
- val |= BIT(8);
- writel(val, pcie->parf + PCIE20_PARF_LTSSM);
-}
-
-static int qcom_pcie_establish_link(struct qcom_pcie *pcie)
-{
-
- if (dw_pcie_link_up(&pcie->pp))
- return 0;
-
- /* Enable Link Training state machine */
- if (pcie->ops->ltssm_enable)
- pcie->ops->ltssm_enable(pcie);
-
- return dw_pcie_wait_for_link(&pcie->pp);
-}
-
-static int qcom_pcie_get_resources_v0(struct qcom_pcie *pcie)
-{
- struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
- struct device *dev = pcie->pp.dev;
-
- res->vdda = devm_regulator_get(dev, "vdda");
- if (IS_ERR(res->vdda))
- return PTR_ERR(res->vdda);
-
- res->vdda_phy = devm_regulator_get(dev, "vdda_phy");
- if (IS_ERR(res->vdda_phy))
- return PTR_ERR(res->vdda_phy);
-
- res->vdda_refclk = devm_regulator_get(dev, "vdda_refclk");
- if (IS_ERR(res->vdda_refclk))
- return PTR_ERR(res->vdda_refclk);
-
- res->iface_clk = devm_clk_get(dev, "iface");
- if (IS_ERR(res->iface_clk))
- return PTR_ERR(res->iface_clk);
-
- res->core_clk = devm_clk_get(dev, "core");
- if (IS_ERR(res->core_clk))
- return PTR_ERR(res->core_clk);
-
- res->phy_clk = devm_clk_get(dev, "phy");
- if (IS_ERR(res->phy_clk))
- return PTR_ERR(res->phy_clk);
-
- res->pci_reset = devm_reset_control_get(dev, "pci");
- if (IS_ERR(res->pci_reset))
- return PTR_ERR(res->pci_reset);
-
- res->axi_reset = devm_reset_control_get(dev, "axi");
- if (IS_ERR(res->axi_reset))
- return PTR_ERR(res->axi_reset);
-
- res->ahb_reset = devm_reset_control_get(dev, "ahb");
- if (IS_ERR(res->ahb_reset))
- return PTR_ERR(res->ahb_reset);
-
- res->por_reset = devm_reset_control_get(dev, "por");
- if (IS_ERR(res->por_reset))
- return PTR_ERR(res->por_reset);
-
- res->phy_reset = devm_reset_control_get(dev, "phy");
- if (IS_ERR(res->phy_reset))
- return PTR_ERR(res->phy_reset);
-
- return 0;
-}
-
-static int qcom_pcie_get_resources_v1(struct qcom_pcie *pcie)
-{
- struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
- struct device *dev = pcie->pp.dev;
-
- res->vdda = devm_regulator_get(dev, "vdda");
- if (IS_ERR(res->vdda))
- return PTR_ERR(res->vdda);
-
- res->iface = devm_clk_get(dev, "iface");
- if (IS_ERR(res->iface))
- return PTR_ERR(res->iface);
-
- res->aux = devm_clk_get(dev, "aux");
- if (IS_ERR(res->aux))
- return PTR_ERR(res->aux);
-
- res->master_bus = devm_clk_get(dev, "master_bus");
- if (IS_ERR(res->master_bus))
- return PTR_ERR(res->master_bus);
-
- res->slave_bus = devm_clk_get(dev, "slave_bus");
- if (IS_ERR(res->slave_bus))
- return PTR_ERR(res->slave_bus);
-
- res->core = devm_reset_control_get(dev, "core");
- if (IS_ERR(res->core))
- return PTR_ERR(res->core);
-
- return 0;
-}
-
-static void qcom_pcie_deinit_v0(struct qcom_pcie *pcie)
-{
- struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
-
- reset_control_assert(res->pci_reset);
- reset_control_assert(res->axi_reset);
- reset_control_assert(res->ahb_reset);
- reset_control_assert(res->por_reset);
- reset_control_assert(res->pci_reset);
- clk_disable_unprepare(res->iface_clk);
- clk_disable_unprepare(res->core_clk);
- clk_disable_unprepare(res->phy_clk);
- regulator_disable(res->vdda);
- regulator_disable(res->vdda_phy);
- regulator_disable(res->vdda_refclk);
-}
-
-static int qcom_pcie_init_v0(struct qcom_pcie *pcie)
-{
- struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
- struct device *dev = pcie->pp.dev;
- u32 val;
- int ret;
-
- ret = regulator_enable(res->vdda);
- if (ret) {
- dev_err(dev, "cannot enable vdda regulator\n");
- return ret;
- }
-
- ret = regulator_enable(res->vdda_refclk);
- if (ret) {
- dev_err(dev, "cannot enable vdda_refclk regulator\n");
- goto err_refclk;
- }
-
- ret = regulator_enable(res->vdda_phy);
- if (ret) {
- dev_err(dev, "cannot enable vdda_phy regulator\n");
- goto err_vdda_phy;
- }
-
- ret = reset_control_assert(res->ahb_reset);
- if (ret) {
- dev_err(dev, "cannot assert ahb reset\n");
- goto err_assert_ahb;
- }
-
- ret = clk_prepare_enable(res->iface_clk);
- if (ret) {
- dev_err(dev, "cannot prepare/enable iface clock\n");
- goto err_assert_ahb;
- }
-
- ret = clk_prepare_enable(res->phy_clk);
- if (ret) {
- dev_err(dev, "cannot prepare/enable phy clock\n");
- goto err_clk_phy;
- }
-
- ret = clk_prepare_enable(res->core_clk);
- if (ret) {
- dev_err(dev, "cannot prepare/enable core clock\n");
- goto err_clk_core;
- }
-
- ret = reset_control_deassert(res->ahb_reset);
- if (ret) {
- dev_err(dev, "cannot deassert ahb reset\n");
- goto err_deassert_ahb;
- }
-
- /* enable PCIe clocks and resets */
- val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
- val &= ~BIT(0);
- writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
-
- /* enable external reference clock */
- val = readl(pcie->parf + PCIE20_PARF_PHY_REFCLK);
- val |= BIT(16);
- writel(val, pcie->parf + PCIE20_PARF_PHY_REFCLK);
-
- ret = reset_control_deassert(res->phy_reset);
- if (ret) {
- dev_err(dev, "cannot deassert phy reset\n");
- return ret;
- }
-
- ret = reset_control_deassert(res->pci_reset);
- if (ret) {
- dev_err(dev, "cannot deassert pci reset\n");
- return ret;
- }
-
- ret = reset_control_deassert(res->por_reset);
- if (ret) {
- dev_err(dev, "cannot deassert por reset\n");
- return ret;
- }
-
- ret = reset_control_deassert(res->axi_reset);
- if (ret) {
- dev_err(dev, "cannot deassert axi reset\n");
- return ret;
- }
-
- /* wait for clock acquisition */
- usleep_range(1000, 1500);
-
- return 0;
-
-err_deassert_ahb:
- clk_disable_unprepare(res->core_clk);
-err_clk_core:
- clk_disable_unprepare(res->phy_clk);
-err_clk_phy:
- clk_disable_unprepare(res->iface_clk);
-err_assert_ahb:
- regulator_disable(res->vdda_phy);
-err_vdda_phy:
- regulator_disable(res->vdda_refclk);
-err_refclk:
- regulator_disable(res->vdda);
-
- return ret;
-}
-
-static void qcom_pcie_deinit_v1(struct qcom_pcie *pcie)
-{
- struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
-
- reset_control_assert(res->core);
- clk_disable_unprepare(res->slave_bus);
- clk_disable_unprepare(res->master_bus);
- clk_disable_unprepare(res->iface);
- clk_disable_unprepare(res->aux);
- regulator_disable(res->vdda);
-}
-
-static int qcom_pcie_init_v1(struct qcom_pcie *pcie)
-{
- struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
- struct device *dev = pcie->pp.dev;
- int ret;
-
- ret = reset_control_deassert(res->core);
- if (ret) {
- dev_err(dev, "cannot deassert core reset\n");
- return ret;
- }
-
- ret = clk_prepare_enable(res->aux);
- if (ret) {
- dev_err(dev, "cannot prepare/enable aux clock\n");
- goto err_res;
- }
-
- ret = clk_prepare_enable(res->iface);
- if (ret) {
- dev_err(dev, "cannot prepare/enable iface clock\n");
- goto err_aux;
- }
-
- ret = clk_prepare_enable(res->master_bus);
- if (ret) {
- dev_err(dev, "cannot prepare/enable master_bus clock\n");
- goto err_iface;
- }
-
- ret = clk_prepare_enable(res->slave_bus);
- if (ret) {
- dev_err(dev, "cannot prepare/enable slave_bus clock\n");
- goto err_master;
- }
-
- ret = regulator_enable(res->vdda);
- if (ret) {
- dev_err(dev, "cannot enable vdda regulator\n");
- goto err_slave;
- }
-
- /* change DBI base address */
- writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
-
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- u32 val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT);
-
- val |= BIT(31);
- writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT);
- }
-
- return 0;
-err_slave:
- clk_disable_unprepare(res->slave_bus);
-err_master:
- clk_disable_unprepare(res->master_bus);
-err_iface:
- clk_disable_unprepare(res->iface);
-err_aux:
- clk_disable_unprepare(res->aux);
-err_res:
- reset_control_assert(res->core);
-
- return ret;
-}
-
-static int qcom_pcie_get_resources_v2(struct qcom_pcie *pcie)
-{
- struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
- struct device *dev = pcie->pp.dev;
-
- res->aux_clk = devm_clk_get(dev, "aux");
- if (IS_ERR(res->aux_clk))
- return PTR_ERR(res->aux_clk);
-
- res->cfg_clk = devm_clk_get(dev, "cfg");
- if (IS_ERR(res->cfg_clk))
- return PTR_ERR(res->cfg_clk);
-
- res->master_clk = devm_clk_get(dev, "bus_master");
- if (IS_ERR(res->master_clk))
- return PTR_ERR(res->master_clk);
-
- res->slave_clk = devm_clk_get(dev, "bus_slave");
- if (IS_ERR(res->slave_clk))
- return PTR_ERR(res->slave_clk);
-
- res->pipe_clk = devm_clk_get(dev, "pipe");
- if (IS_ERR(res->pipe_clk))
- return PTR_ERR(res->pipe_clk);
-
- return 0;
-}
-
-static int qcom_pcie_init_v2(struct qcom_pcie *pcie)
-{
- struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
- struct device *dev = pcie->pp.dev;
- u32 val;
- int ret;
-
- ret = clk_prepare_enable(res->aux_clk);
- if (ret) {
- dev_err(dev, "cannot prepare/enable aux clock\n");
- return ret;
- }
-
- ret = clk_prepare_enable(res->cfg_clk);
- if (ret) {
- dev_err(dev, "cannot prepare/enable cfg clock\n");
- goto err_cfg_clk;
- }
-
- ret = clk_prepare_enable(res->master_clk);
- if (ret) {
- dev_err(dev, "cannot prepare/enable master clock\n");
- goto err_master_clk;
- }
-
- ret = clk_prepare_enable(res->slave_clk);
- if (ret) {
- dev_err(dev, "cannot prepare/enable slave clock\n");
- goto err_slave_clk;
- }
-
- /* enable PCIe clocks and resets */
- val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL);
- val &= ~BIT(0);
- writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL);
-
- /* change DBI base address */
- writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
-
- /* MAC PHY_POWERDOWN MUX DISABLE */
- val = readl(pcie->parf + PCIE20_PARF_SYS_CTRL);
- val &= ~BIT(29);
- writel(val, pcie->parf + PCIE20_PARF_SYS_CTRL);
-
- val = readl(pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
- val |= BIT(4);
- writel(val, pcie->parf + PCIE20_PARF_MHI_CLOCK_RESET_CTRL);
-
- val = readl(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
- val |= BIT(31);
- writel(val, pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT_V2);
-
- return 0;
-
-err_slave_clk:
- clk_disable_unprepare(res->master_clk);
-err_master_clk:
- clk_disable_unprepare(res->cfg_clk);
-err_cfg_clk:
- clk_disable_unprepare(res->aux_clk);
-
- return ret;
-}
-
-static int qcom_pcie_post_init_v2(struct qcom_pcie *pcie)
-{
- struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
- struct device *dev = pcie->pp.dev;
- int ret;
-
- ret = clk_prepare_enable(res->pipe_clk);
- if (ret) {
- dev_err(dev, "cannot prepare/enable pipe clock\n");
- return ret;
- }
-
- return 0;
-}
-
-static int qcom_pcie_link_up(struct pcie_port *pp)
-{
- struct qcom_pcie *pcie = to_qcom_pcie(pp);
- u16 val = readw(pcie->pp.dbi_base + PCIE20_CAP + PCI_EXP_LNKSTA);
-
- return !!(val & PCI_EXP_LNKSTA_DLLLA);
-}
-
-static void qcom_pcie_deinit_v2(struct qcom_pcie *pcie)
-{
- struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
-
- clk_disable_unprepare(res->pipe_clk);
- clk_disable_unprepare(res->slave_clk);
- clk_disable_unprepare(res->master_clk);
- clk_disable_unprepare(res->cfg_clk);
- clk_disable_unprepare(res->aux_clk);
-}
-
-static void qcom_pcie_host_init(struct pcie_port *pp)
-{
- struct qcom_pcie *pcie = to_qcom_pcie(pp);
- int ret;
-
- qcom_ep_reset_assert(pcie);
-
- ret = pcie->ops->init(pcie);
- if (ret)
- goto err_deinit;
-
- ret = phy_power_on(pcie->phy);
- if (ret)
- goto err_deinit;
-
- if (pcie->ops->post_init)
- pcie->ops->post_init(pcie);
-
- dw_pcie_setup_rc(pp);
-
- if (IS_ENABLED(CONFIG_PCI_MSI))
- dw_pcie_msi_init(pp);
-
- qcom_ep_reset_deassert(pcie);
-
- ret = qcom_pcie_establish_link(pcie);
- if (ret)
- goto err;
-
- return;
-err:
- qcom_ep_reset_assert(pcie);
- phy_power_off(pcie->phy);
-err_deinit:
- pcie->ops->deinit(pcie);
-}
-
-static int qcom_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
- u32 *val)
-{
- /* the device class is not reported correctly from the register */
- if (where == PCI_CLASS_REVISION && size == 4) {
- *val = readl(pp->dbi_base + PCI_CLASS_REVISION);
- *val &= 0xff; /* keep revision id */
- *val |= PCI_CLASS_BRIDGE_PCI << 16;
- return PCIBIOS_SUCCESSFUL;
- }
-
- return dw_pcie_cfg_read(pp->dbi_base + where, size, val);
-}
-
-static struct pcie_host_ops qcom_pcie_dw_ops = {
- .link_up = qcom_pcie_link_up,
- .host_init = qcom_pcie_host_init,
- .rd_own_conf = qcom_pcie_rd_own_conf,
-};
-
-static const struct qcom_pcie_ops ops_v0 = {
- .get_resources = qcom_pcie_get_resources_v0,
- .init = qcom_pcie_init_v0,
- .deinit = qcom_pcie_deinit_v0,
- .ltssm_enable = qcom_pcie_v0_v1_ltssm_enable,
-};
-
-static const struct qcom_pcie_ops ops_v1 = {
- .get_resources = qcom_pcie_get_resources_v1,
- .init = qcom_pcie_init_v1,
- .deinit = qcom_pcie_deinit_v1,
- .ltssm_enable = qcom_pcie_v0_v1_ltssm_enable,
-};
-
-static const struct qcom_pcie_ops ops_v2 = {
- .get_resources = qcom_pcie_get_resources_v2,
- .init = qcom_pcie_init_v2,
- .post_init = qcom_pcie_post_init_v2,
- .deinit = qcom_pcie_deinit_v2,
- .ltssm_enable = qcom_pcie_v2_ltssm_enable,
-};
-
-static int qcom_pcie_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct resource *res;
- struct qcom_pcie *pcie;
- struct pcie_port *pp;
- int ret;
-
- pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
- if (!pcie)
- return -ENOMEM;
-
- pp = &pcie->pp;
- pcie->ops = (struct qcom_pcie_ops *)of_device_get_match_data(dev);
-
- pcie->reset = devm_gpiod_get_optional(dev, "perst", GPIOD_OUT_LOW);
- if (IS_ERR(pcie->reset))
- return PTR_ERR(pcie->reset);
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "parf");
- pcie->parf = devm_ioremap_resource(dev, res);
- if (IS_ERR(pcie->parf))
- return PTR_ERR(pcie->parf);
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
- pp->dbi_base = devm_ioremap_resource(dev, res);
- if (IS_ERR(pp->dbi_base))
- return PTR_ERR(pp->dbi_base);
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "elbi");
- pcie->elbi = devm_ioremap_resource(dev, res);
- if (IS_ERR(pcie->elbi))
- return PTR_ERR(pcie->elbi);
-
- pcie->phy = devm_phy_optional_get(dev, "pciephy");
- if (IS_ERR(pcie->phy))
- return PTR_ERR(pcie->phy);
-
- pp->dev = dev;
- ret = pcie->ops->get_resources(pcie);
- if (ret)
- return ret;
-
- pp->root_bus_nr = -1;
- pp->ops = &qcom_pcie_dw_ops;
-
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0)
- return pp->msi_irq;
-
- ret = devm_request_irq(dev, pp->msi_irq,
- qcom_pcie_msi_irq_handler,
- IRQF_SHARED, "qcom-pcie-msi", pp);
- if (ret) {
- dev_err(dev, "cannot request msi irq\n");
- return ret;
- }
- }
-
- ret = phy_init(pcie->phy);
- if (ret)
- return ret;
-
- ret = dw_pcie_host_init(pp);
- if (ret) {
- dev_err(dev, "cannot initialize host\n");
- return ret;
- }
-
- return 0;
-}
-
-static const struct of_device_id qcom_pcie_match[] = {
- { .compatible = "qcom,pcie-ipq8064", .data = &ops_v0 },
- { .compatible = "qcom,pcie-apq8064", .data = &ops_v0 },
- { .compatible = "qcom,pcie-apq8084", .data = &ops_v1 },
- { .compatible = "qcom,pcie-msm8996", .data = &ops_v2 },
- { }
-};
-
-static struct platform_driver qcom_pcie_driver = {
- .probe = qcom_pcie_probe,
- .driver = {
- .name = "qcom-pcie",
- .suppress_bind_attrs = true,
- .of_match_table = qcom_pcie_match,
- },
-};
-builtin_platform_driver(qcom_pcie_driver);
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