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PCI: rcar: Add local struct device pointers

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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>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Bjorn Helgaas 2016-10-10 14:31:28 -05:00
parent bdf530984d
commit 4ef80d72a6
1 changed files with 47 additions and 41 deletions
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88
drivers/pci/host/pcie-rcar.c
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@ -397,6 +397,7 @@ static int rcar_pcie_setup(struct list_head *resource, struct rcar_pcie *pci)
static void rcar_pcie_force_speedup(struct rcar_pcie *pcie)
{
struct device *dev = pcie->dev;
unsigned int timeout = 1000;
u32 macsr;
@ -404,7 +405,7 @@ static void rcar_pcie_force_speedup(struct rcar_pcie *pcie)
return;
if (rcar_pci_read_reg(pcie, MACCTLR) & SPEED_CHANGE) {
dev_err(pcie->dev, "Speed change already in progress\n");
dev_err(dev, "Speed change already in progress\n");
return;
}
@ -433,7 +434,7 @@ static void rcar_pcie_force_speedup(struct rcar_pcie *pcie)
rcar_pci_write_reg(pcie, macsr, MACSR);
if (macsr & SPCHGFAIL)
dev_err(pcie->dev, "Speed change failed\n");
dev_err(dev, "Speed change failed\n");
goto done;
}
@ -441,15 +442,16 @@ static void rcar_pcie_force_speedup(struct rcar_pcie *pcie)
msleep(1);
};
dev_err(pcie->dev, "Speed change timed out\n");
dev_err(dev, "Speed change timed out\n");
done:
dev_info(pcie->dev, "Current link speed is %s GT/s\n",
dev_info(dev, "Current link speed is %s GT/s\n",
(macsr & LINK_SPEED) == LINK_SPEED_5_0GTS ? "5" : "2.5");
}
static int rcar_pcie_enable(struct rcar_pcie *pcie)
{
struct device *dev = pcie->dev;
struct pci_bus *bus, *child;
LIST_HEAD(res);
@ -461,14 +463,14 @@ static int rcar_pcie_enable(struct rcar_pcie *pcie)
pci_add_flags(PCI_REASSIGN_ALL_RSRC | PCI_REASSIGN_ALL_BUS);
if (IS_ENABLED(CONFIG_PCI_MSI))
bus = pci_scan_root_bus_msi(pcie->dev, pcie->root_bus_nr,
bus = pci_scan_root_bus_msi(dev, pcie->root_bus_nr,
&rcar_pcie_ops, pcie, &res, &pcie->msi.chip);
else
bus = pci_scan_root_bus(pcie->dev, pcie->root_bus_nr,
bus = pci_scan_root_bus(dev, pcie->root_bus_nr,
&rcar_pcie_ops, pcie, &res);
if (!bus) {
dev_err(pcie->dev, "Scanning rootbus failed");
dev_err(dev, "Scanning rootbus failed");
return -ENODEV;
}
@ -487,6 +489,7 @@ static int rcar_pcie_enable(struct rcar_pcie *pcie)
static int phy_wait_for_ack(struct rcar_pcie *pcie)
{
struct device *dev = pcie->dev;
unsigned int timeout = 100;
while (timeout--) {
@ -496,7 +499,7 @@ static int phy_wait_for_ack(struct rcar_pcie *pcie)
udelay(100);
}
dev_err(pcie->dev, "Access to PCIe phy timed out\n");
dev_err(dev, "Access to PCIe phy timed out\n");
return -ETIMEDOUT;
}
@ -697,6 +700,7 @@ static irqreturn_t rcar_pcie_msi_irq(int irq, void *data)
{
struct rcar_pcie *pcie = data;
struct rcar_msi *msi = &pcie->msi;
struct device *dev = pcie->dev;
unsigned long reg;
reg = rcar_pci_read_reg(pcie, PCIEMSIFR);
@ -717,10 +721,10 @@ static irqreturn_t rcar_pcie_msi_irq(int irq, void *data)
if (test_bit(index, msi->used))
generic_handle_irq(irq);
else
dev_info(pcie->dev, "unhandled MSI\n");
dev_info(dev, "unhandled MSI\n");
} else {
/* Unknown MSI, just clear it */
dev_dbg(pcie->dev, "unexpected MSI\n");
dev_dbg(dev, "unexpected MSI\n");
}
/* see if there's any more pending in this vector */
@ -843,22 +847,22 @@ static const struct irq_domain_ops msi_domain_ops = {
static int rcar_pcie_enable_msi(struct rcar_pcie *pcie)
{
struct platform_device *pdev = to_platform_device(pcie->dev);
struct device *dev = pcie->dev;
struct rcar_msi *msi = &pcie->msi;
unsigned long base;
int err, i;
mutex_init(&msi->lock);
msi->chip.dev = pcie->dev;
msi->chip.dev = dev;
msi->chip.setup_irq = rcar_msi_setup_irq;
msi->chip.setup_irqs = rcar_msi_setup_irqs;
msi->chip.teardown_irq = rcar_msi_teardown_irq;
msi->domain = irq_domain_add_linear(pcie->dev->of_node, INT_PCI_MSI_NR,
msi->domain = irq_domain_add_linear(dev->of_node, INT_PCI_MSI_NR,
&msi_domain_ops, &msi->chip);
if (!msi->domain) {
dev_err(&pdev->dev, "failed to create IRQ domain\n");
dev_err(dev, "failed to create IRQ domain\n");
return -ENOMEM;
}
@ -866,19 +870,19 @@ static int rcar_pcie_enable_msi(struct rcar_pcie *pcie)
irq_create_mapping(msi->domain, i);
/* Two irqs are for MSI, but they are also used for non-MSI irqs */
err = devm_request_irq(&pdev->dev, msi->irq1, rcar_pcie_msi_irq,
err = devm_request_irq(dev, msi->irq1, rcar_pcie_msi_irq,
IRQF_SHARED | IRQF_NO_THREAD,
rcar_msi_irq_chip.name, pcie);
if (err < 0) {
dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
dev_err(dev, "failed to request IRQ: %d\n", err);
goto err;
}
err = devm_request_irq(&pdev->dev, msi->irq2, rcar_pcie_msi_irq,
err = devm_request_irq(dev, msi->irq2, rcar_pcie_msi_irq,
IRQF_SHARED | IRQF_NO_THREAD,
rcar_msi_irq_chip.name, pcie);
if (err < 0) {
dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
dev_err(dev, "failed to request IRQ: %d\n", err);
goto err;
}
@ -902,29 +906,30 @@ err:
static int rcar_pcie_get_resources(struct platform_device *pdev,
struct rcar_pcie *pcie)
{
struct device *dev = pcie->dev;
struct resource res;
int err, i;
err = of_address_to_resource(pdev->dev.of_node, 0, &res);
err = of_address_to_resource(dev->of_node, 0, &res);
if (err)
return err;
pcie->base = devm_ioremap_resource(&pdev->dev, &res);
pcie->base = devm_ioremap_resource(dev, &res);
if (IS_ERR(pcie->base))
return PTR_ERR(pcie->base);
pcie->clk = devm_clk_get(&pdev->dev, "pcie");
pcie->clk = devm_clk_get(dev, "pcie");
if (IS_ERR(pcie->clk)) {
dev_err(pcie->dev, "cannot get platform clock\n");
dev_err(dev, "cannot get platform clock\n");
return PTR_ERR(pcie->clk);
}
err = clk_prepare_enable(pcie->clk);
if (err)
return err;
pcie->bus_clk = devm_clk_get(&pdev->dev, "pcie_bus");
pcie->bus_clk = devm_clk_get(dev, "pcie_bus");
if (IS_ERR(pcie->bus_clk)) {
dev_err(pcie->dev, "cannot get pcie bus clock\n");
dev_err(dev, "cannot get pcie bus clock\n");
err = PTR_ERR(pcie->bus_clk);
goto fail_clk;
}
@ -932,17 +937,17 @@ static int rcar_pcie_get_resources(struct platform_device *pdev,
if (err)
goto fail_clk;
i = irq_of_parse_and_map(pdev->dev.of_node, 0);
i = irq_of_parse_and_map(dev->of_node, 0);
if (!i) {
dev_err(pcie->dev, "cannot get platform resources for msi interrupt\n");
dev_err(dev, "cannot get platform resources for msi interrupt\n");
err = -ENOENT;
goto err_map_reg;
}
pcie->msi.irq1 = i;
i = irq_of_parse_and_map(pdev->dev.of_node, 1);
i = irq_of_parse_and_map(dev->of_node, 1);
if (!i) {
dev_err(pcie->dev, "cannot get platform resources for msi interrupt\n");
dev_err(dev, "cannot get platform resources for msi interrupt\n");
err = -ENOENT;
goto err_map_reg;
}
@ -1119,17 +1124,18 @@ out_release_res:
static int rcar_pcie_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rcar_pcie *pcie;
unsigned int data;
const struct of_device_id *of_id;
int err;
int (*hw_init_fn)(struct rcar_pcie *);
pcie = devm_kzalloc(&pdev->dev, sizeof(*pcie), GFP_KERNEL);
pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
if (!pcie)
return -ENOMEM;
pcie->dev = &pdev->dev;
pcie->dev = dev;
platform_set_drvdata(pdev, pcie);
INIT_LIST_HEAD(&pcie->resources);
@ -1138,41 +1144,41 @@ static int rcar_pcie_probe(struct platform_device *pdev)
err = rcar_pcie_get_resources(pdev, pcie);
if (err < 0) {
dev_err(&pdev->dev, "failed to request resources: %d\n", err);
dev_err(dev, "failed to request resources: %d\n", err);
return err;
}
err = rcar_pcie_parse_map_dma_ranges(pcie, pdev->dev.of_node);
err = rcar_pcie_parse_map_dma_ranges(pcie, dev->of_node);
if (err)
return err;
of_id = of_match_device(rcar_pcie_of_match, pcie->dev);
of_id = of_match_device(rcar_pcie_of_match, dev);
if (!of_id || !of_id->data)
return -EINVAL;
hw_init_fn = of_id->data;
pm_runtime_enable(pcie->dev);
err = pm_runtime_get_sync(pcie->dev);
pm_runtime_enable(dev);
err = pm_runtime_get_sync(dev);
if (err < 0) {
dev_err(pcie->dev, "pm_runtime_get_sync failed\n");
dev_err(dev, "pm_runtime_get_sync failed\n");
goto err_pm_disable;
}
/* Failure to get a link might just be that no cards are inserted */
err = hw_init_fn(pcie);
if (err) {
dev_info(&pdev->dev, "PCIe link down\n");
dev_info(dev, "PCIe link down\n");
err = 0;
goto err_pm_put;
}
data = rcar_pci_read_reg(pcie, MACSR);
dev_info(&pdev->dev, "PCIe x%d: link up\n", (data >> 20) & 0x3f);
dev_info(dev, "PCIe x%d: link up\n", (data >> 20) & 0x3f);
if (IS_ENABLED(CONFIG_PCI_MSI)) {
err = rcar_pcie_enable_msi(pcie);
if (err < 0) {
dev_err(&pdev->dev,
dev_err(dev,
"failed to enable MSI support: %d\n",
err);
goto err_pm_put;
@ -1186,10 +1192,10 @@ static int rcar_pcie_probe(struct platform_device *pdev)
return 0;
err_pm_put:
pm_runtime_put(pcie->dev);
pm_runtime_put(dev);
err_pm_disable:
pm_runtime_disable(pcie->dev);
pm_runtime_disable(dev);
return err;
}