[U-Boot] [PATCH v3 25/35] dm: tegra: pci: Convert to livetree
Simon Glass
sjg at chromium.org
Mon Jun 12 12:21:52 UTC 2017
Update the tegra pci driver to support a live device tree. Fix the check
for nvidia,num-lanes so that an error will actually be detected.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
Changes in v3:
- Add new patch to convert tegra PCI to device tree
Changes in v2: None
drivers/pci/pci_tegra.c | 53 ++++++++++++++++++++++---------------------------
1 file changed, 24 insertions(+), 29 deletions(-)
diff --git a/drivers/pci/pci_tegra.c b/drivers/pci/pci_tegra.c
index 7d9c63b06f..c969954182 100644
--- a/drivers/pci/pci_tegra.c
+++ b/drivers/pci/pci_tegra.c
@@ -16,7 +16,6 @@
#include <clk.h>
#include <dm.h>
#include <errno.h>
-#include <fdtdec.h>
#include <malloc.h>
#include <pci.h>
#include <power-domain.h>
@@ -25,6 +24,7 @@
#include <asm/io.h>
#include <asm/gpio.h>
+#include <linux/ioport.h>
#include <linux/list.h>
#ifndef CONFIG_TEGRA186
@@ -220,9 +220,9 @@ struct tegra_pcie_soc {
struct tegra_pcie {
struct pci_controller hose;
- struct fdt_resource pads;
- struct fdt_resource afi;
- struct fdt_resource cs;
+ struct resource pads;
+ struct resource afi;
+ struct resource cs;
struct list_head ports;
unsigned long xbar;
@@ -364,13 +364,12 @@ static int pci_tegra_write_config(struct udevice *bus, pci_dev_t bdf,
return 0;
}
-static int tegra_pcie_port_parse_dt(const void *fdt, int node,
- struct tegra_pcie_port *port)
+static int tegra_pcie_port_parse_dt(ofnode node, struct tegra_pcie_port *port)
{
const u32 *addr;
int len;
- addr = fdt_getprop(fdt, node, "assigned-addresses", &len);
+ addr = ofnode_read_prop(node, "assigned-addresses", &len);
if (!addr) {
error("property \"assigned-addresses\" not found");
return -FDT_ERR_NOTFOUND;
@@ -382,7 +381,7 @@ static int tegra_pcie_port_parse_dt(const void *fdt, int node,
return 0;
}
-static int tegra_pcie_get_xbar_config(const void *fdt, int node, u32 lanes,
+static int tegra_pcie_get_xbar_config(ofnode node, u32 lanes,
enum tegra_pci_id id, unsigned long *xbar)
{
switch (id) {
@@ -456,14 +455,12 @@ static int tegra_pcie_get_xbar_config(const void *fdt, int node, u32 lanes,
return -FDT_ERR_NOTFOUND;
}
-static int tegra_pcie_parse_port_info(const void *fdt, int node,
- unsigned int *index,
- unsigned int *lanes)
+static int tegra_pcie_parse_port_info(ofnode node, uint *index, uint *lanes)
{
struct fdt_pci_addr addr;
int err;
- err = fdtdec_get_int(fdt, node, "nvidia,num-lanes", 0);
+ err = ofnode_read_u32_default(node, "nvidia,num-lanes", -1);
if (err < 0) {
error("failed to parse \"nvidia,num-lanes\" property");
return err;
@@ -471,7 +468,7 @@ static int tegra_pcie_parse_port_info(const void *fdt, int node,
*lanes = err;
- err = fdtdec_get_pci_addr(fdt, node, 0, "reg", &addr);
+ err = ofnode_read_pci_addr(node, 0, "reg", &addr);
if (err < 0) {
error("failed to parse \"reg\" property");
return err;
@@ -487,28 +484,26 @@ int __weak tegra_pcie_board_init(void)
return 0;
}
-static int tegra_pcie_parse_dt(const void *fdt, int node, enum tegra_pci_id id,
+static int tegra_pcie_parse_dt(struct udevice *dev, enum tegra_pci_id id,
struct tegra_pcie *pcie)
{
- int err, subnode;
+ ofnode subnode;
u32 lanes = 0;
+ int err;
- err = fdt_get_named_resource(fdt, node, "reg", "reg-names", "pads",
- &pcie->pads);
+ err = dev_read_resource(dev, 0, &pcie->pads);
if (err < 0) {
error("resource \"pads\" not found");
return err;
}
- err = fdt_get_named_resource(fdt, node, "reg", "reg-names", "afi",
- &pcie->afi);
+ err = dev_read_resource(dev, 1, &pcie->afi);
if (err < 0) {
error("resource \"afi\" not found");
return err;
}
- err = fdt_get_named_resource(fdt, node, "reg", "reg-names", "cs",
- &pcie->cs);
+ err = dev_read_resource(dev, 2, &pcie->cs);
if (err < 0) {
error("resource \"cs\" not found");
return err;
@@ -531,12 +526,11 @@ static int tegra_pcie_parse_dt(const void *fdt, int node, enum tegra_pci_id id,
}
#endif
- fdt_for_each_subnode(subnode, fdt, node) {
+ dev_for_each_subnode(subnode, dev) {
unsigned int index = 0, num_lanes = 0;
struct tegra_pcie_port *port;
- err = tegra_pcie_parse_port_info(fdt, subnode, &index,
- &num_lanes);
+ err = tegra_pcie_parse_port_info(subnode, &index, &num_lanes);
if (err < 0) {
error("failed to obtain root port info");
continue;
@@ -544,7 +538,7 @@ static int tegra_pcie_parse_dt(const void *fdt, int node, enum tegra_pci_id id,
lanes |= num_lanes << (index << 3);
- if (!fdtdec_get_is_enabled(fdt, subnode))
+ if (!ofnode_is_available(subnode))
continue;
port = malloc(sizeof(*port));
@@ -555,7 +549,7 @@ static int tegra_pcie_parse_dt(const void *fdt, int node, enum tegra_pci_id id,
port->num_lanes = num_lanes;
port->index = index;
- err = tegra_pcie_port_parse_dt(fdt, subnode, port);
+ err = tegra_pcie_port_parse_dt(subnode, port);
if (err < 0) {
free(port);
continue;
@@ -565,7 +559,8 @@ static int tegra_pcie_parse_dt(const void *fdt, int node, enum tegra_pci_id id,
port->pcie = pcie;
}
- err = tegra_pcie_get_xbar_config(fdt, node, lanes, id, &pcie->xbar);
+ err = tegra_pcie_get_xbar_config(dev_ofnode(dev), lanes, id,
+ &pcie->xbar);
if (err < 0) {
error("invalid lane configuration");
return err;
@@ -815,7 +810,7 @@ static int tegra_pcie_setup_translations(struct udevice *bus)
/* BAR 0: type 1 extended configuration space */
fpci = 0xfe100000;
- size = fdt_resource_size(&pcie->cs);
+ size = resource_size(&pcie->cs);
axi = pcie->cs.start;
afi_writel(pcie, axi, AFI_AXI_BAR0_START);
@@ -1099,7 +1094,7 @@ static int pci_tegra_ofdata_to_platdata(struct udevice *dev)
INIT_LIST_HEAD(&pcie->ports);
- if (tegra_pcie_parse_dt(gd->fdt_blob, dev_of_offset(dev), id, pcie))
+ if (tegra_pcie_parse_dt(dev, id, pcie))
return -EINVAL;
return 0;
--
2.13.1.508.gb3defc5cc-goog
More information about the U-Boot
mailing list