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PCI: rockchip: Use pci_parse_request_of_pci_ranges()

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Convert the Rockchip 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>
Cc: Shawn Lin <shawn.lin@rock-chips.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andrew Murray <andrew.murray@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: linux-rockchip@lists.infradead.org
This commit is contained in:
Rob Herring 2019-10-28 11:32:41 -05:00 committed by Lorenzo Pieralisi
parent 6c6a0dff06
commit 5c1306a0fd
1 changed files with 7 additions and 29 deletions
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36
drivers/pci/controller/pcie-rockchip-host.c
View File

@ -950,14 +950,10 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct pci_bus *bus, *child;
struct pci_host_bridge *bridge;
struct resource *bus_res;
struct resource_entry *win;
resource_size_t io_base;
struct resource *mem;
struct resource *io;
int err;
LIST_HEAD(res);
if (!dev->of_node)
return -ENODEV;
@ -995,29 +991,20 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
if (err < 0)
goto err_deinit_port;
err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
&res, &io_base);
err = pci_parse_request_of_pci_ranges(dev, &bridge->windows, &bus_res);
if (err)
goto err_remove_irq_domain;
err = devm_request_pci_bus_resources(dev, &res);
if (err)
goto err_free_res;
rockchip->root_bus_nr = bus_res->start;
/* Get the I/O and memory ranges from DT */
resource_list_for_each_entry(win, &res) {
resource_list_for_each_entry(win, &bridge->windows) {
switch (resource_type(win->res)) {
case IORESOURCE_IO:
io = win->res;
io->name = "I/O";
rockchip->io_size = resource_size(io);
rockchip->io_bus_addr = io->start - win->offset;
err = pci_remap_iospace(io, io_base);
if (err) {
dev_warn(dev, "error %d: failed to map resource %pR\n",
err, io);
continue;
}
rockchip->io = io;
break;
case IORESOURCE_MEM:
@ -1026,9 +1013,6 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
rockchip->mem_size = resource_size(mem);
rockchip->mem_bus_addr = mem->start - win->offset;
break;
case IORESOURCE_BUS:
rockchip->root_bus_nr = win->res->start;
break;
default:
continue;
}
@ -1036,15 +1020,14 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
err = rockchip_pcie_cfg_atu(rockchip);
if (err)
goto err_unmap_iospace;
goto err_remove_irq_domain;
rockchip->msg_region = devm_ioremap(dev, rockchip->msg_bus_addr, SZ_1M);
if (!rockchip->msg_region) {
err = -ENOMEM;
goto err_unmap_iospace;
goto err_remove_irq_domain;
}
list_splice_init(&res, &bridge->windows);
bridge->dev.parent = dev;
bridge->sysdata = rockchip;
bridge->busnr = 0;
@ -1054,7 +1037,7 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
err = pci_scan_root_bus_bridge(bridge);
if (err < 0)
goto err_unmap_iospace;
goto err_remove_irq_domain;
bus = bridge->bus;
@ -1068,10 +1051,6 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
pci_bus_add_devices(bus);
return 0;
err_unmap_iospace:
pci_unmap_iospace(rockchip->io);
err_free_res:
pci_free_resource_list(&res);
err_remove_irq_domain:
irq_domain_remove(rockchip->irq_domain);
err_deinit_port:
@ -1097,7 +1076,6 @@ static int rockchip_pcie_remove(struct platform_device *pdev)
pci_stop_root_bus(rockchip->root_bus);
pci_remove_root_bus(rockchip->root_bus);
pci_unmap_iospace(rockchip->io);
irq_domain_remove(rockchip->irq_domain);
rockchip_pcie_deinit_phys(rockchip);