aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/imx6/patches-3.12/0011-PCI-imx6-Add-support-for-i.MX6-PCIe-controller.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/imx6/patches-3.12/0011-PCI-imx6-Add-support-for-i.MX6-PCIe-controller.patch')
-rw-r--r--target/linux/imx6/patches-3.12/0011-PCI-imx6-Add-support-for-i.MX6-PCIe-controller.patch620
1 files changed, 620 insertions, 0 deletions
diff --git a/target/linux/imx6/patches-3.12/0011-PCI-imx6-Add-support-for-i.MX6-PCIe-controller.patch b/target/linux/imx6/patches-3.12/0011-PCI-imx6-Add-support-for-i.MX6-PCIe-controller.patch
new file mode 100644
index 0000000000..46a46606a5
--- /dev/null
+++ b/target/linux/imx6/patches-3.12/0011-PCI-imx6-Add-support-for-i.MX6-PCIe-controller.patch
@@ -0,0 +1,620 @@
+From bb38919ec56e0758c3ae56dfc091dcde1391353e Mon Sep 17 00:00:00 2001
+From: Sean Cross <xobs@kosagi.com>
+Date: Thu, 26 Sep 2013 11:24:47 +0800
+Subject: [PATCH] PCI: imx6: Add support for i.MX6 PCIe controller
+
+Add support for the PCIe port present on the i.MX6 family of controllers.
+These use the Synopsis Designware core tied to their own PHY.
+
+Signed-off-by: Sean Cross <xobs@kosagi.com>
+Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
+Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
+Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
+---
+ drivers/pci/host/Kconfig | 6 +
+ drivers/pci/host/Makefile | 1 +
+ drivers/pci/host/pci-imx6.c | 575 +++++++++++++++++++++
+ 4 files changed, 588 insertions(+), 1 deletion(-)
+ create mode 100644 drivers/pci/host/pci-imx6.c
+
+--- a/drivers/pci/host/Kconfig
++++ b/drivers/pci/host/Kconfig
+@@ -15,6 +15,12 @@ config PCI_EXYNOS
+ select PCIEPORTBUS
+ select PCIE_DW
+
++config PCI_IMX6
++ bool "Freescale i.MX6 PCIe controller"
++ depends on SOC_IMX6Q
++ select PCIEPORTBUS
++ select PCIE_DW
++
+ config PCI_TEGRA
+ bool "NVIDIA Tegra PCIe controller"
+ depends on ARCH_TEGRA
+--- a/drivers/pci/host/Makefile
++++ b/drivers/pci/host/Makefile
+@@ -1,4 +1,5 @@
+ obj-$(CONFIG_PCIE_DW) += pcie-designware.o
+ obj-$(CONFIG_PCI_EXYNOS) += pci-exynos.o
++obj-$(CONFIG_PCI_IMX6) += pci-imx6.o
+ obj-$(CONFIG_PCI_MVEBU) += pci-mvebu.o
+ obj-$(CONFIG_PCI_TEGRA) += pci-tegra.o
+--- /dev/null
++++ b/drivers/pci/host/pci-imx6.c
+@@ -0,0 +1,575 @@
++/*
++ * PCIe host controller driver for Freescale i.MX6 SoCs
++ *
++ * Copyright (C) 2013 Kosagi
++ * http://www.kosagi.com
++ *
++ * Author: Sean Cross <xobs@kosagi.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 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/gpio.h>
++#include <linux/kernel.h>
++#include <linux/mfd/syscon.h>
++#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
++#include <linux/module.h>
++#include <linux/of_gpio.h>
++#include <linux/pci.h>
++#include <linux/platform_device.h>
++#include <linux/regmap.h>
++#include <linux/resource.h>
++#include <linux/signal.h>
++#include <linux/types.h>
++
++#include "pcie-designware.h"
++
++#define to_imx6_pcie(x) container_of(x, struct imx6_pcie, pp)
++
++struct imx6_pcie {
++ int reset_gpio;
++ int power_on_gpio;
++ int wake_up_gpio;
++ int disable_gpio;
++ struct clk *lvds_gate;
++ struct clk *sata_ref_100m;
++ struct clk *pcie_ref_125m;
++ struct clk *pcie_axi;
++ struct pcie_port pp;
++ struct regmap *iomuxc_gpr;
++ void __iomem *mem_base;
++};
++
++/* PCIe Port Logic registers (memory-mapped) */
++#define PL_OFFSET 0x700
++#define PCIE_PHY_DEBUG_R0 (PL_OFFSET + 0x28)
++#define PCIE_PHY_DEBUG_R1 (PL_OFFSET + 0x2c)
++
++#define PCIE_PHY_CTRL (PL_OFFSET + 0x114)
++#define PCIE_PHY_CTRL_DATA_LOC 0
++#define PCIE_PHY_CTRL_CAP_ADR_LOC 16
++#define PCIE_PHY_CTRL_CAP_DAT_LOC 17
++#define PCIE_PHY_CTRL_WR_LOC 18
++#define PCIE_PHY_CTRL_RD_LOC 19
++
++#define PCIE_PHY_STAT (PL_OFFSET + 0x110)
++#define PCIE_PHY_STAT_ACK_LOC 16
++
++/* PHY registers (not memory-mapped) */
++#define PCIE_PHY_RX_ASIC_OUT 0x100D
++
++#define PHY_RX_OVRD_IN_LO 0x1005
++#define PHY_RX_OVRD_IN_LO_RX_DATA_EN (1 << 5)
++#define PHY_RX_OVRD_IN_LO_RX_PLL_EN (1 << 3)
++
++static int pcie_phy_poll_ack(void __iomem *dbi_base, int exp_val)
++{
++ u32 val;
++ u32 max_iterations = 10;
++ u32 wait_counter = 0;
++
++ do {
++ val = readl(dbi_base + PCIE_PHY_STAT);
++ val = (val >> PCIE_PHY_STAT_ACK_LOC) & 0x1;
++ wait_counter++;
++
++ if (val == exp_val)
++ return 0;
++
++ udelay(1);
++ } while (wait_counter < max_iterations);
++
++ return -ETIMEDOUT;
++}
++
++static int pcie_phy_wait_ack(void __iomem *dbi_base, int addr)
++{
++ u32 val;
++ int ret;
++
++ val = addr << PCIE_PHY_CTRL_DATA_LOC;
++ writel(val, dbi_base + PCIE_PHY_CTRL);
++
++ val |= (0x1 << PCIE_PHY_CTRL_CAP_ADR_LOC);
++ writel(val, dbi_base + PCIE_PHY_CTRL);
++
++ ret = pcie_phy_poll_ack(dbi_base, 1);
++ if (ret)
++ return ret;
++
++ val = addr << PCIE_PHY_CTRL_DATA_LOC;
++ writel(val, dbi_base + PCIE_PHY_CTRL);
++
++ ret = pcie_phy_poll_ack(dbi_base, 0);
++ if (ret)
++ return ret;
++
++ return 0;
++}
++
++/* Read from the 16-bit PCIe PHY control registers (not memory-mapped) */
++static int pcie_phy_read(void __iomem *dbi_base, int addr , int *data)
++{
++ u32 val, phy_ctl;
++ int ret;
++
++ ret = pcie_phy_wait_ack(dbi_base, addr);
++ if (ret)
++ return ret;
++
++ /* assert Read signal */
++ phy_ctl = 0x1 << PCIE_PHY_CTRL_RD_LOC;
++ writel(phy_ctl, dbi_base + PCIE_PHY_CTRL);
++
++ ret = pcie_phy_poll_ack(dbi_base, 1);
++ if (ret)
++ return ret;
++
++ val = readl(dbi_base + PCIE_PHY_STAT);
++ *data = val & 0xffff;
++
++ /* deassert Read signal */
++ writel(0x00, dbi_base + PCIE_PHY_CTRL);
++
++ ret = pcie_phy_poll_ack(dbi_base, 0);
++ if (ret)
++ return ret;
++
++ return 0;
++}
++
++static int pcie_phy_write(void __iomem *dbi_base, int addr, int data)
++{
++ u32 var;
++ int ret;
++
++ /* write addr */
++ /* cap addr */
++ ret = pcie_phy_wait_ack(dbi_base, addr);
++ if (ret)
++ return ret;
++
++ var = data << PCIE_PHY_CTRL_DATA_LOC;
++ writel(var, dbi_base + PCIE_PHY_CTRL);
++
++ /* capture data */
++ var |= (0x1 << PCIE_PHY_CTRL_CAP_DAT_LOC);
++ writel(var, dbi_base + PCIE_PHY_CTRL);
++
++ ret = pcie_phy_poll_ack(dbi_base, 1);
++ if (ret)
++ return ret;
++
++ /* deassert cap data */
++ var = data << PCIE_PHY_CTRL_DATA_LOC;
++ writel(var, dbi_base + PCIE_PHY_CTRL);
++
++ /* wait for ack de-assertion */
++ ret = pcie_phy_poll_ack(dbi_base, 0);
++ if (ret)
++ return ret;
++
++ /* assert wr signal */
++ var = 0x1 << PCIE_PHY_CTRL_WR_LOC;
++ writel(var, dbi_base + PCIE_PHY_CTRL);
++
++ /* wait for ack */
++ ret = pcie_phy_poll_ack(dbi_base, 1);
++ if (ret)
++ return ret;
++
++ /* deassert wr signal */
++ var = data << PCIE_PHY_CTRL_DATA_LOC;
++ writel(var, dbi_base + PCIE_PHY_CTRL);
++
++ /* wait for ack de-assertion */
++ ret = pcie_phy_poll_ack(dbi_base, 0);
++ if (ret)
++ return ret;
++
++ writel(0x0, dbi_base + PCIE_PHY_CTRL);
++
++ return 0;
++}
++
++/* Added for PCI abort handling */
++static int imx6q_pcie_abort_handler(unsigned long addr,
++ unsigned int fsr, struct pt_regs *regs)
++{
++ /*
++ * If it was an imprecise abort, then we need to correct the
++ * return address to be _after_ the instruction.
++ */
++ if (fsr & (1 << 10))
++ regs->ARM_pc += 4;
++ return 0;
++}
++
++static int imx6_pcie_assert_core_reset(struct pcie_port *pp)
++{
++ struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp);
++
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
++ IMX6Q_GPR1_PCIE_TEST_PD, 1 << 18);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
++ IMX6Q_GPR12_PCIE_CTL_2, 1 << 10);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
++ IMX6Q_GPR1_PCIE_REF_CLK_EN, 0 << 16);
++
++ gpio_set_value(imx6_pcie->reset_gpio, 0);
++ msleep(100);
++ gpio_set_value(imx6_pcie->reset_gpio, 1);
++
++ return 0;
++}
++
++static int imx6_pcie_deassert_core_reset(struct pcie_port *pp)
++{
++ struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp);
++ int ret;
++
++ if (gpio_is_valid(imx6_pcie->power_on_gpio))
++ gpio_set_value(imx6_pcie->power_on_gpio, 1);
++
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
++ IMX6Q_GPR1_PCIE_TEST_PD, 0 << 18);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
++ IMX6Q_GPR1_PCIE_REF_CLK_EN, 1 << 16);
++
++ ret = clk_prepare_enable(imx6_pcie->sata_ref_100m);
++ if (ret) {
++ dev_err(pp->dev, "unable to enable sata_ref_100m\n");
++ goto err_sata_ref;
++ }
++
++ ret = clk_prepare_enable(imx6_pcie->pcie_ref_125m);
++ if (ret) {
++ dev_err(pp->dev, "unable to enable pcie_ref_125m\n");
++ goto err_pcie_ref;
++ }
++
++ ret = clk_prepare_enable(imx6_pcie->lvds_gate);
++ if (ret) {
++ dev_err(pp->dev, "unable to enable lvds_gate\n");
++ goto err_lvds_gate;
++ }
++
++ ret = clk_prepare_enable(imx6_pcie->pcie_axi);
++ if (ret) {
++ dev_err(pp->dev, "unable to enable pcie_axi\n");
++ goto err_pcie_axi;
++ }
++
++ /* allow the clocks to stabilize */
++ usleep_range(200, 500);
++
++ return 0;
++
++err_pcie_axi:
++ clk_disable_unprepare(imx6_pcie->lvds_gate);
++err_lvds_gate:
++ clk_disable_unprepare(imx6_pcie->pcie_ref_125m);
++err_pcie_ref:
++ clk_disable_unprepare(imx6_pcie->sata_ref_100m);
++err_sata_ref:
++ return ret;
++
++}
++
++static void imx6_pcie_init_phy(struct pcie_port *pp)
++{
++ struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp);
++
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
++ IMX6Q_GPR12_PCIE_CTL_2, 0 << 10);
++
++ /* configure constant input signal to the pcie ctrl and phy */
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
++ IMX6Q_GPR12_DEVICE_TYPE, PCI_EXP_TYPE_ROOT_PORT << 12);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
++ IMX6Q_GPR12_LOS_LEVEL, 9 << 4);
++
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8,
++ IMX6Q_GPR8_TX_DEEMPH_GEN1, 0 << 0);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8,
++ IMX6Q_GPR8_TX_DEEMPH_GEN2_3P5DB, 0 << 6);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8,
++ IMX6Q_GPR8_TX_DEEMPH_GEN2_6DB, 20 << 12);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8,
++ IMX6Q_GPR8_TX_SWING_FULL, 127 << 18);
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8,
++ IMX6Q_GPR8_TX_SWING_LOW, 127 << 25);
++}
++
++static void imx6_pcie_host_init(struct pcie_port *pp)
++{
++ int count = 0;
++ struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp);
++
++ imx6_pcie_assert_core_reset(pp);
++
++ imx6_pcie_init_phy(pp);
++
++ imx6_pcie_deassert_core_reset(pp);
++
++ dw_pcie_setup_rc(pp);
++
++ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
++ IMX6Q_GPR12_PCIE_CTL_2, 1 << 10);
++
++ while (!dw_pcie_link_up(pp)) {
++ usleep_range(100, 1000);
++ count++;
++ if (count >= 10) {
++ dev_err(pp->dev, "phy link never came up\n");
++ dev_dbg(pp->dev,
++ "DEBUG_R0: 0x%08x, DEBUG_R1: 0x%08x\n",
++ readl(pp->dbi_base + PCIE_PHY_DEBUG_R0),
++ readl(pp->dbi_base + PCIE_PHY_DEBUG_R1));
++ break;
++ }
++ }
++
++ return;
++}
++
++static int imx6_pcie_link_up(struct pcie_port *pp)
++{
++ u32 rc, ltssm, rx_valid, temp;
++
++ /* link is debug bit 36, debug register 1 starts at bit 32 */
++ rc = readl(pp->dbi_base + PCIE_PHY_DEBUG_R1) & (0x1 << (36 - 32));
++ if (rc)
++ return -EAGAIN;
++
++ /*
++ * From L0, initiate MAC entry to gen2 if EP/RC supports gen2.
++ * Wait 2ms (LTSSM timeout is 24ms, PHY lock is ~5us in gen2).
++ * If (MAC/LTSSM.state == Recovery.RcvrLock)
++ * && (PHY/rx_valid==0) then pulse PHY/rx_reset. Transition
++ * to gen2 is stuck
++ */
++ pcie_phy_read(pp->dbi_base, PCIE_PHY_RX_ASIC_OUT, &rx_valid);
++ ltssm = readl(pp->dbi_base + PCIE_PHY_DEBUG_R0) & 0x3F;
++
++ if (rx_valid & 0x01)
++ return 0;
++
++ if (ltssm != 0x0d)
++ return 0;
++
++ dev_err(pp->dev, "transition to gen2 is stuck, reset PHY!\n");
++
++ pcie_phy_read(pp->dbi_base,
++ PHY_RX_OVRD_IN_LO, &temp);
++ temp |= (PHY_RX_OVRD_IN_LO_RX_DATA_EN
++ | PHY_RX_OVRD_IN_LO_RX_PLL_EN);
++ pcie_phy_write(pp->dbi_base,
++ PHY_RX_OVRD_IN_LO, temp);
++
++ usleep_range(2000, 3000);
++
++ pcie_phy_read(pp->dbi_base,
++ PHY_RX_OVRD_IN_LO, &temp);
++ temp &= ~(PHY_RX_OVRD_IN_LO_RX_DATA_EN
++ | PHY_RX_OVRD_IN_LO_RX_PLL_EN);
++ pcie_phy_write(pp->dbi_base,
++ PHY_RX_OVRD_IN_LO, temp);
++
++ return 0;
++}
++
++static struct pcie_host_ops imx6_pcie_host_ops = {
++ .link_up = imx6_pcie_link_up,
++ .host_init = imx6_pcie_host_init,
++};
++
++static int imx6_add_pcie_port(struct pcie_port *pp,
++ struct platform_device *pdev)
++{
++ int ret;
++
++ pp->irq = platform_get_irq(pdev, 0);
++ if (!pp->irq) {
++ dev_err(&pdev->dev, "failed to get irq\n");
++ return -ENODEV;
++ }
++
++ pp->root_bus_nr = -1;
++ pp->ops = &imx6_pcie_host_ops;
++
++ spin_lock_init(&pp->conf_lock);
++ ret = dw_pcie_host_init(pp);
++ if (ret) {
++ dev_err(&pdev->dev, "failed to initialize host\n");
++ return ret;
++ }
++
++ return 0;
++}
++
++static int __init imx6_pcie_probe(struct platform_device *pdev)
++{
++ struct imx6_pcie *imx6_pcie;
++ struct pcie_port *pp;
++ struct device_node *np = pdev->dev.of_node;
++ struct resource *dbi_base;
++ int ret;
++
++ imx6_pcie = devm_kzalloc(&pdev->dev, sizeof(*imx6_pcie), GFP_KERNEL);
++ if (!imx6_pcie)
++ return -ENOMEM;
++
++ pp = &imx6_pcie->pp;
++ pp->dev = &pdev->dev;
++
++ /* Added for PCI abort handling */
++ hook_fault_code(16 + 6, imx6q_pcie_abort_handler, SIGBUS, 0,
++ "imprecise external abort");
++
++ dbi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!dbi_base) {
++ dev_err(&pdev->dev, "dbi_base memory resource not found\n");
++ return -ENODEV;
++ }
++
++ pp->dbi_base = devm_ioremap_resource(&pdev->dev, dbi_base);
++ if (IS_ERR(pp->dbi_base)) {
++ dev_err(&pdev->dev, "unable to remap dbi_base\n");
++ ret = PTR_ERR(pp->dbi_base);
++ goto err;
++ }
++
++ /* Fetch GPIOs */
++ imx6_pcie->reset_gpio = of_get_named_gpio(np, "reset-gpio", 0);
++ if (!gpio_is_valid(imx6_pcie->reset_gpio)) {
++ dev_err(&pdev->dev, "no reset-gpio defined\n");
++ ret = -ENODEV;
++ }
++ ret = devm_gpio_request_one(&pdev->dev,
++ imx6_pcie->reset_gpio,
++ GPIOF_OUT_INIT_LOW,
++ "PCIe reset");
++ if (ret) {
++ dev_err(&pdev->dev, "unable to get reset gpio\n");
++ goto err;
++ }
++
++ imx6_pcie->power_on_gpio = of_get_named_gpio(np, "power-on-gpio", 0);
++ if (gpio_is_valid(imx6_pcie->power_on_gpio)) {
++ ret = devm_gpio_request_one(&pdev->dev,
++ imx6_pcie->power_on_gpio,
++ GPIOF_OUT_INIT_LOW,
++ "PCIe power enable");
++ if (ret) {
++ dev_err(&pdev->dev, "unable to get power-on gpio\n");
++ goto err;
++ }
++ }
++
++ imx6_pcie->wake_up_gpio = of_get_named_gpio(np, "wake-up-gpio", 0);
++ if (gpio_is_valid(imx6_pcie->wake_up_gpio)) {
++ ret = devm_gpio_request_one(&pdev->dev,
++ imx6_pcie->wake_up_gpio,
++ GPIOF_IN,
++ "PCIe wake up");
++ if (ret) {
++ dev_err(&pdev->dev, "unable to get wake-up gpio\n");
++ goto err;
++ }
++ }
++
++ imx6_pcie->disable_gpio = of_get_named_gpio(np, "disable-gpio", 0);
++ if (gpio_is_valid(imx6_pcie->disable_gpio)) {
++ ret = devm_gpio_request_one(&pdev->dev,
++ imx6_pcie->disable_gpio,
++ GPIOF_OUT_INIT_HIGH,
++ "PCIe disable endpoint");
++ if (ret) {
++ dev_err(&pdev->dev, "unable to get disable-ep gpio\n");
++ goto err;
++ }
++ }
++
++ /* Fetch clocks */
++ imx6_pcie->lvds_gate = devm_clk_get(&pdev->dev, "lvds_gate");
++ if (IS_ERR(imx6_pcie->lvds_gate)) {
++ dev_err(&pdev->dev,
++ "lvds_gate clock select missing or invalid\n");
++ ret = PTR_ERR(imx6_pcie->lvds_gate);
++ goto err;
++ }
++
++ imx6_pcie->sata_ref_100m = devm_clk_get(&pdev->dev, "sata_ref_100m");
++ if (IS_ERR(imx6_pcie->sata_ref_100m)) {
++ dev_err(&pdev->dev,
++ "sata_ref_100m clock source missing or invalid\n");
++ ret = PTR_ERR(imx6_pcie->sata_ref_100m);
++ goto err;
++ }
++
++ imx6_pcie->pcie_ref_125m = devm_clk_get(&pdev->dev, "pcie_ref_125m");
++ if (IS_ERR(imx6_pcie->pcie_ref_125m)) {
++ dev_err(&pdev->dev,
++ "pcie_ref_125m clock source missing or invalid\n");
++ ret = PTR_ERR(imx6_pcie->pcie_ref_125m);
++ goto err;
++ }
++
++ imx6_pcie->pcie_axi = devm_clk_get(&pdev->dev, "pcie_axi");
++ if (IS_ERR(imx6_pcie->pcie_axi)) {
++ dev_err(&pdev->dev,
++ "pcie_axi clock source missing or invalid\n");
++ ret = PTR_ERR(imx6_pcie->pcie_axi);
++ goto err;
++ }
++
++ /* Grab GPR config register range */
++ imx6_pcie->iomuxc_gpr =
++ syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
++ if (IS_ERR(imx6_pcie->iomuxc_gpr)) {
++ dev_err(&pdev->dev, "unable to find iomuxc registers\n");
++ ret = PTR_ERR(imx6_pcie->iomuxc_gpr);
++ goto err;
++ }
++
++ ret = imx6_add_pcie_port(pp, pdev);
++ if (ret < 0)
++ goto err;
++
++ platform_set_drvdata(pdev, imx6_pcie);
++ return 0;
++
++err:
++ return ret;
++}
++
++static const struct of_device_id imx6_pcie_of_match[] = {
++ { .compatible = "fsl,imx6q-pcie", },
++ {},
++};
++MODULE_DEVICE_TABLE(of, imx6_pcie_of_match);
++
++static struct platform_driver imx6_pcie_driver = {
++ .driver = {
++ .name = "imx6q-pcie",
++ .owner = THIS_MODULE,
++ .of_match_table = of_match_ptr(imx6_pcie_of_match),
++ },
++};
++
++/* Freescale PCIe driver does not allow module unload */
++
++static int __init imx6_pcie_init(void)
++{
++ return platform_driver_probe(&imx6_pcie_driver, imx6_pcie_probe);
++}
++module_init(imx6_pcie_init);
++
++MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
++MODULE_DESCRIPTION("Freescale i.MX6 PCIe host controller driver");
++MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 21:10:20 +0000