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PCI: mobiveil: Use pci_parse_request_of_pci_ranges() 

Convert the Mobiveil host bridge to use the common
pci_parse_request_of_pci_ranges().

There's no need to assign the resources to a temporary list first. Just
use bridge->windows directly and remove all the temporary list handling.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Reviewed-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Cc: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>
Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Rob Herring 2019-10-28 11:32:40 -05:00 committed by Lorenzo Pieralisi
parent 8a26f861b8
commit 6c6a0dff06
1 changed files with 7 additions and 19 deletions
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26
drivers/pci/controller/pcie-mobiveil.c
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@ -140,7 +140,6 @@ struct mobiveil_msi { /* MSI information */
struct mobiveil_pcie {
struct platform_device *pdev;
struct list_head resources;
void __iomem *config_axi_slave_base; /* endpoint config base */
void __iomem *csr_axi_slave_base; /* root port config base */
void __iomem *apb_csr_base; /* MSI register base */
@ -575,6 +574,7 @@ static void mobiveil_pcie_enable_msi(struct mobiveil_pcie *pcie)
static int mobiveil_host_init(struct mobiveil_pcie *pcie)
{
struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
u32 value, pab_ctrl, type;
struct resource_entry *win;
@ -631,7 +631,7 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie)
program_ib_windows(pcie, WIN_NUM_0, 0, 0, MEM_WINDOW_TYPE, IB_WIN_SIZE);
/* Get the I/O and memory ranges from DT */
resource_list_for_each_entry(win, &pcie->resources) {
resource_list_for_each_entry(win, &bridge->windows) {
if (resource_type(win->res) == IORESOURCE_MEM)
type = MEM_WINDOW_TYPE;
else if (resource_type(win->res) == IORESOURCE_IO)
@ -857,7 +857,6 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
struct pci_bus *child;
struct pci_host_bridge *bridge;
struct device *dev = &pdev->dev;
resource_size_t iobase;
int ret;
/* allocate the PCIe port */
@ -875,11 +874,8 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
return ret;
}
INIT_LIST_HEAD(&pcie->resources);
/* parse the host bridge base addresses from the device tree file */
ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
&pcie->resources, &iobase);
ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL);
if (ret) {
dev_err(dev, "Getting bridge resources failed\n");
return ret;
@ -892,24 +888,19 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
ret = mobiveil_host_init(pcie);
if (ret) {
dev_err(dev, "Failed to initialize host\n");
goto error;
return ret;
}
/* initialize the IRQ domains */
ret = mobiveil_pcie_init_irq_domain(pcie);
if (ret) {
dev_err(dev, "Failed creating IRQ Domain\n");
goto error;
return ret;
}
irq_set_chained_handler_and_data(pcie->irq, mobiveil_pcie_isr, pcie);
ret = devm_request_pci_bus_resources(dev, &pcie->resources);
if (ret)
goto error;
/* Initialize bridge */
list_splice_init(&pcie->resources, &bridge->windows);
bridge->dev.parent = dev;
bridge->sysdata = pcie;
bridge->busnr = pcie->root_bus_nr;
@ -920,13 +911,13 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
ret = mobiveil_bringup_link(pcie);
if (ret) {
dev_info(dev, "link bring-up failed\n");
goto error;
return ret;
}
/* setup the kernel resources for the newly added PCIe root bus */
ret = pci_scan_root_bus_bridge(bridge);
if (ret)
goto error;
return ret;
bus = bridge->bus;
@ -936,9 +927,6 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
pci_bus_add_devices(bus);
return 0;
error:
pci_free_resource_list(&pcie->resources);
return ret;
}
static const struct of_device_id mobiveil_pcie_of_match[] = {