From: Bjorn Helgaas Date: Thu, 6 Oct 2016 18:35:18 +0000 (-0500) Subject: PCI: imx6: Add local struct device pointers X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=13957652f7242a8cb02ffb8c96f412f62c486ee1;p=openwrt%2Fstaging%2Fblogic.git PCI: imx6: Add local struct device pointers Use a local "struct device *dev" for brevity and consistency with other drivers. No functional change intended. Signed-off-by: Bjorn Helgaas --- diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c index ead4a5c3480b..08381763614b 100644 --- a/drivers/pci/host/pci-imx6.c +++ b/drivers/pci/host/pci-imx6.c @@ -303,13 +303,14 @@ static int imx6_pcie_assert_core_reset(struct pcie_port *pp) static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) { struct pcie_port *pp = &imx6_pcie->pp; + struct device *dev = pp->dev; int ret = 0; switch (imx6_pcie->variant) { case IMX6SX: ret = clk_prepare_enable(imx6_pcie->pcie_inbound_axi); if (ret) { - dev_err(pp->dev, "unable to enable pcie_axi clock\n"); + dev_err(dev, "unable to enable pcie_axi clock\n"); break; } @@ -339,29 +340,30 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) static int imx6_pcie_deassert_core_reset(struct pcie_port *pp) { struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp); + struct device *dev = pp->dev; int ret; ret = clk_prepare_enable(imx6_pcie->pcie_phy); if (ret) { - dev_err(pp->dev, "unable to enable pcie_phy clock\n"); + dev_err(dev, "unable to enable pcie_phy clock\n"); goto err_pcie_phy; } ret = clk_prepare_enable(imx6_pcie->pcie_bus); if (ret) { - dev_err(pp->dev, "unable to enable pcie_bus clock\n"); + dev_err(dev, "unable to enable pcie_bus clock\n"); goto err_pcie_bus; } ret = clk_prepare_enable(imx6_pcie->pcie); if (ret) { - dev_err(pp->dev, "unable to enable pcie clock\n"); + dev_err(dev, "unable to enable pcie clock\n"); goto err_pcie; } ret = imx6_pcie_enable_ref_clk(imx6_pcie); if (ret) { - dev_err(pp->dev, "unable to enable pcie ref clock\n"); + dev_err(dev, "unable to enable pcie ref clock\n"); goto err_ref_clk; } @@ -441,11 +443,13 @@ static void imx6_pcie_init_phy(struct pcie_port *pp) static int imx6_pcie_wait_for_link(struct pcie_port *pp) { + struct device *dev = pp->dev; + /* check if the link is up or not */ if (!dw_pcie_wait_for_link(pp)) return 0; - dev_dbg(pp->dev, "DEBUG_R0: 0x%08x, DEBUG_R1: 0x%08x\n", + dev_dbg(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)); return -ETIMEDOUT; @@ -453,6 +457,7 @@ static int imx6_pcie_wait_for_link(struct pcie_port *pp) static int imx6_pcie_wait_for_speed_change(struct pcie_port *pp) { + struct device *dev = pp->dev; u32 tmp; unsigned int retries; @@ -464,7 +469,7 @@ static int imx6_pcie_wait_for_speed_change(struct pcie_port *pp) usleep_range(100, 1000); } - dev_err(pp->dev, "Speed change timeout\n"); + dev_err(dev, "Speed change timeout\n"); return -EINVAL; } @@ -478,6 +483,7 @@ static irqreturn_t imx6_pcie_msi_handler(int irq, void *arg) static int imx6_pcie_establish_link(struct pcie_port *pp) { struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp); + struct device *dev = pp->dev; u32 tmp; int ret; @@ -497,7 +503,7 @@ static int imx6_pcie_establish_link(struct pcie_port *pp) ret = imx6_pcie_wait_for_link(pp); if (ret) { - dev_info(pp->dev, "Link never came up\n"); + dev_info(dev, "Link never came up\n"); goto err_reset_phy; } @@ -508,7 +514,7 @@ static int imx6_pcie_establish_link(struct pcie_port *pp) tmp |= PCIE_RC_LCR_MAX_LINK_SPEEDS_GEN2; writel(tmp, pp->dbi_base + PCIE_RC_LCR); } else { - dev_info(pp->dev, "Link: Gen2 disabled\n"); + dev_info(dev, "Link: Gen2 disabled\n"); } /* @@ -521,23 +527,23 @@ static int imx6_pcie_establish_link(struct pcie_port *pp) ret = imx6_pcie_wait_for_speed_change(pp); if (ret) { - dev_err(pp->dev, "Failed to bring link up!\n"); + dev_err(dev, "Failed to bring link up!\n"); goto err_reset_phy; } /* Make sure link training is finished as well! */ ret = imx6_pcie_wait_for_link(pp); if (ret) { - dev_err(pp->dev, "Failed to bring link up!\n"); + dev_err(dev, "Failed to bring link up!\n"); goto err_reset_phy; } tmp = readl(pp->dbi_base + PCIE_RC_LCSR); - dev_info(pp->dev, "Link up, Gen%i\n", (tmp >> 16) & 0xf); + dev_info(dev, "Link up, Gen%i\n", (tmp >> 16) & 0xf); return 0; err_reset_phy: - dev_dbg(pp->dev, "PHY DEBUG_R0=0x%08x DEBUG_R1=0x%08x\n", + dev_dbg(dev, "PHY 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)); imx6_pcie_reset_phy(pp); @@ -575,21 +581,22 @@ static struct pcie_host_ops imx6_pcie_host_ops = { static int __init imx6_add_pcie_port(struct pcie_port *pp, struct platform_device *pdev) { + struct device *dev = pp->dev; int ret; if (IS_ENABLED(CONFIG_PCI_MSI)) { pp->msi_irq = platform_get_irq_byname(pdev, "msi"); if (pp->msi_irq <= 0) { - dev_err(&pdev->dev, "failed to get MSI irq\n"); + dev_err(dev, "failed to get MSI irq\n"); return -ENODEV; } - ret = devm_request_irq(&pdev->dev, pp->msi_irq, + ret = devm_request_irq(dev, pp->msi_irq, imx6_pcie_msi_handler, IRQF_SHARED | IRQF_NO_THREAD, "mx6-pcie-msi", pp); if (ret) { - dev_err(&pdev->dev, "failed to request MSI irq\n"); + dev_err(dev, "failed to request MSI irq\n"); return ret; } } @@ -599,7 +606,7 @@ static int __init imx6_add_pcie_port(struct pcie_port *pp, ret = dw_pcie_host_init(pp); if (ret) { - dev_err(&pdev->dev, "failed to initialize host\n"); + dev_err(dev, "failed to initialize host\n"); return ret; } @@ -608,29 +615,30 @@ static int __init imx6_add_pcie_port(struct pcie_port *pp, static int __init imx6_pcie_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct imx6_pcie *imx6_pcie; struct pcie_port *pp; - struct device_node *np = pdev->dev.of_node; + struct device_node *np = dev->of_node; struct resource *dbi_base; - struct device_node *node = pdev->dev.of_node; + struct device_node *node = dev->of_node; int ret; - imx6_pcie = devm_kzalloc(&pdev->dev, sizeof(*imx6_pcie), GFP_KERNEL); + imx6_pcie = devm_kzalloc(dev, sizeof(*imx6_pcie), GFP_KERNEL); if (!imx6_pcie) return -ENOMEM; pp = &imx6_pcie->pp; - pp->dev = &pdev->dev; + pp->dev = dev; imx6_pcie->variant = - (enum imx6_pcie_variants)of_device_get_match_data(&pdev->dev); + (enum imx6_pcie_variants)of_device_get_match_data(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); - pp->dbi_base = devm_ioremap_resource(&pdev->dev, dbi_base); + pp->dbi_base = devm_ioremap_resource(dev, dbi_base); if (IS_ERR(pp->dbi_base)) return PTR_ERR(pp->dbi_base); @@ -639,44 +647,41 @@ static int __init imx6_pcie_probe(struct platform_device *pdev) imx6_pcie->gpio_active_high = of_property_read_bool(np, "reset-gpio-active-high"); if (gpio_is_valid(imx6_pcie->reset_gpio)) { - ret = devm_gpio_request_one(&pdev->dev, imx6_pcie->reset_gpio, + ret = devm_gpio_request_one(dev, imx6_pcie->reset_gpio, imx6_pcie->gpio_active_high ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, "PCIe reset"); if (ret) { - dev_err(&pdev->dev, "unable to get reset gpio\n"); + dev_err(dev, "unable to get reset gpio\n"); return ret; } } /* Fetch clocks */ - imx6_pcie->pcie_phy = devm_clk_get(&pdev->dev, "pcie_phy"); + imx6_pcie->pcie_phy = devm_clk_get(dev, "pcie_phy"); if (IS_ERR(imx6_pcie->pcie_phy)) { - dev_err(&pdev->dev, - "pcie_phy clock source missing or invalid\n"); + dev_err(dev, "pcie_phy clock source missing or invalid\n"); return PTR_ERR(imx6_pcie->pcie_phy); } - imx6_pcie->pcie_bus = devm_clk_get(&pdev->dev, "pcie_bus"); + imx6_pcie->pcie_bus = devm_clk_get(dev, "pcie_bus"); if (IS_ERR(imx6_pcie->pcie_bus)) { - dev_err(&pdev->dev, - "pcie_bus clock source missing or invalid\n"); + dev_err(dev, "pcie_bus clock source missing or invalid\n"); return PTR_ERR(imx6_pcie->pcie_bus); } - imx6_pcie->pcie = devm_clk_get(&pdev->dev, "pcie"); + imx6_pcie->pcie = devm_clk_get(dev, "pcie"); if (IS_ERR(imx6_pcie->pcie)) { - dev_err(&pdev->dev, - "pcie clock source missing or invalid\n"); + dev_err(dev, "pcie clock source missing or invalid\n"); return PTR_ERR(imx6_pcie->pcie); } if (imx6_pcie->variant == IMX6SX) { - imx6_pcie->pcie_inbound_axi = devm_clk_get(&pdev->dev, + imx6_pcie->pcie_inbound_axi = devm_clk_get(dev, "pcie_inbound_axi"); if (IS_ERR(imx6_pcie->pcie_inbound_axi)) { - dev_err(&pdev->dev, + dev_err(dev, "pcie_incbound_axi clock missing or invalid\n"); return PTR_ERR(imx6_pcie->pcie_inbound_axi); } @@ -686,7 +691,7 @@ static int __init imx6_pcie_probe(struct platform_device *pdev) 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"); + dev_err(dev, "unable to find iomuxc registers\n"); return PTR_ERR(imx6_pcie->iomuxc_gpr); }