github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-08-06 23:43:54 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

PCI: dwc: Consolidate devicetree handling in dw_pcie_host_get_resources()

Browse Source 
Consolidate devicetree resource handling in dw_pcie_host_get_resources().
No functional change intended.

Link: https://lore.kernel.org/r/20250315201548.858189-5-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Bjorn Helgaas 2025-03-15 15:15:39 -05:00
parent 84f37c43d5
commit 2ce107e064
1 changed files with 25 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
drivers/pci/controller/dwc/pcie-designware-host.c
View File

@ -418,25 +418,15 @@ static void dw_pcie_host_request_msg_tlp_res(struct dw_pcie_rp *pp)
}
}
int dw_pcie_host_init(struct dw_pcie_rp *pp)
static int dw_pcie_host_get_resources(struct dw_pcie_rp *pp)
{
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct device *dev = pci->dev;
struct device_node *np = dev->of_node;
struct platform_device *pdev = to_platform_device(dev);
struct resource_entry *win;
struct pci_host_bridge *bridge;
struct resource *res;
int ret;
raw_spin_lock_init(&pp->lock);
bridge = devm_pci_alloc_host_bridge(dev, 0);
if (!bridge)
return -ENOMEM;
pp->bridge = bridge;
ret = dw_pcie_get_resources(pci);
if (ret)
return ret;
@ -455,13 +445,36 @@ int dw_pcie_host_init(struct dw_pcie_rp *pp)
return PTR_ERR(pp->va_cfg0_base);
/* Get the I/O range from DT */
win = resource_list_first_type(&bridge->windows, IORESOURCE_IO);
win = resource_list_first_type(&pp->bridge->windows, IORESOURCE_IO);
if (win) {
pp->io_size = resource_size(win->res);
pp->io_bus_addr = win->res->start - win->offset;
pp->io_base = pci_pio_to_address(win->res->start);
}
return 0;
}
int dw_pcie_host_init(struct dw_pcie_rp *pp)
{
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct device *dev = pci->dev;
struct device_node *np = dev->of_node;
struct pci_host_bridge *bridge;
int ret;
raw_spin_lock_init(&pp->lock);
bridge = devm_pci_alloc_host_bridge(dev, 0);
if (!bridge)
return -ENOMEM;
pp->bridge = bridge;
ret = dw_pcie_host_get_resources(pp);
if (ret)
return ret;
/* Set default bus ops */
bridge->ops = &dw_pcie_ops;
bridge->child_ops = &dw_child_pcie_ops;