From: Bjorn Helgaas <bhelgaas@google.com>
To: Richard Zhu <Richard.Zhu@freescale.com>,
Lucas Stach <l.stach@pengutronix.de>
Cc: linux-pci@vger.kernel.org
Subject: [PATCH v2 1/8] PCI: imx6: Add local struct device pointers
Date: Wed, 12 Oct 2016 08:47:40 -0500 [thread overview]
Message-ID: <20161012134740.28919.52316.stgit@bhelgaas-glaptop2.roam.corp.google.com> (raw)
In-Reply-To: <20161012134335.28919.64137.stgit@bhelgaas-glaptop2.roam.corp.google.com>
Use a local "struct device *dev" for brevity and consistency with other
drivers. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
drivers/pci/host/pci-imx6.c | 79 +++++++++++++++++++++++--------------------
1 file changed, 42 insertions(+), 37 deletions(-)
diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c
index ead4a5c..0838176 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);
}
next prev parent reply other threads:[~2016-10-12 13:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-12 13:47 [PATCH v2 0/8] PCI: imx6: Cleanups Bjorn Helgaas
2016-10-12 13:47 ` Bjorn Helgaas [this message]
2016-10-12 13:47 ` [PATCH v2 2/8] PCI: imx6: Remove redundant of_node pointer Bjorn Helgaas
2016-10-12 13:47 ` [PATCH v2 3/8] PCI: imx6: Removed unused struct imx6_pcie.mem_base Bjorn Helgaas
2016-10-12 13:48 ` [PATCH v2 4/8] PCI: imx6: Pass struct imx6_pcie to PHY accessors Bjorn Helgaas
2016-10-12 13:48 ` [PATCH v2 5/8] PCI: imx6: Pass device-specific struct to internal functions Bjorn Helgaas
2016-10-12 13:48 ` [PATCH v2 6/8] PCI: imx6: Use generic DesignWare accessors Bjorn Helgaas
2016-10-12 13:48 ` [PATCH v2 7/8] PCI: imx6: Reorder struct imx6_pcie Bjorn Helgaas
2016-10-12 13:48 ` [PATCH v2 8/8] PCI: imx6: Remove unused return values Bjorn Helgaas
2016-10-12 16:06 ` [PATCH v2 0/8] PCI: imx6: Cleanups Bjorn Helgaas
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