diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/790-v5.13-0006-net-dsa-b53-mmap-Add-device-tree-support.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/790-v5.13-0006-net-dsa-b53-mmap-Add-device-tree-support.patch | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.10/790-v5.13-0006-net-dsa-b53-mmap-Add-device-tree-support.patch b/target/linux/generic/backport-5.10/790-v5.13-0006-net-dsa-b53-mmap-Add-device-tree-support.patch new file mode 100644 index 0000000000..c1014b20bc --- /dev/null +++ b/target/linux/generic/backport-5.10/790-v5.13-0006-net-dsa-b53-mmap-Add-device-tree-support.patch @@ -0,0 +1,92 @@ +From a5538a777b73b35750ed1ffff8c1ef539e861624 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com> +Date: Wed, 17 Mar 2021 10:23:17 +0100 +Subject: [PATCH] net: dsa: b53: mmap: Add device tree support +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Add device tree support to b53_mmap.c while keeping platform devices support. + +Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/dsa/b53/b53_mmap.c | 55 ++++++++++++++++++++++++++++++++++ + 1 file changed, 55 insertions(+) + +--- a/drivers/net/dsa/b53/b53_mmap.c ++++ b/drivers/net/dsa/b53/b53_mmap.c +@@ -16,6 +16,7 @@ + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + ++#include <linux/bits.h> + #include <linux/kernel.h> + #include <linux/module.h> + #include <linux/io.h> +@@ -228,11 +229,65 @@ static const struct b53_io_ops b53_mmap_ + .write64 = b53_mmap_write64, + }; + ++static int b53_mmap_probe_of(struct platform_device *pdev, ++ struct b53_platform_data **ppdata) ++{ ++ struct device_node *np = pdev->dev.of_node; ++ struct device_node *of_ports, *of_port; ++ struct device *dev = &pdev->dev; ++ struct b53_platform_data *pdata; ++ void __iomem *mem; ++ ++ mem = devm_platform_ioremap_resource(pdev, 0); ++ if (IS_ERR(mem)) ++ return PTR_ERR(mem); ++ ++ pdata = devm_kzalloc(dev, sizeof(struct b53_platform_data), ++ GFP_KERNEL); ++ if (!pdata) ++ return -ENOMEM; ++ ++ pdata->regs = mem; ++ pdata->chip_id = BCM63XX_DEVICE_ID; ++ pdata->big_endian = of_property_read_bool(np, "big-endian"); ++ ++ of_ports = of_get_child_by_name(np, "ports"); ++ if (!of_ports) { ++ dev_err(dev, "no ports child node found\n"); ++ return -EINVAL; ++ } ++ ++ for_each_available_child_of_node(of_ports, of_port) { ++ u32 reg; ++ ++ if (of_property_read_u32(of_port, "reg", ®)) ++ continue; ++ ++ if (reg < B53_CPU_PORT) ++ pdata->enabled_ports |= BIT(reg); ++ } ++ ++ of_node_put(of_ports); ++ *ppdata = pdata; ++ ++ return 0; ++} ++ + static int b53_mmap_probe(struct platform_device *pdev) + { ++ struct device_node *np = pdev->dev.of_node; + struct b53_platform_data *pdata = pdev->dev.platform_data; + struct b53_mmap_priv *priv; + struct b53_device *dev; ++ int ret; ++ ++ if (!pdata && np) { ++ ret = b53_mmap_probe_of(pdev, &pdata); ++ if (ret) { ++ dev_err(&pdev->dev, "OF probe error\n"); ++ return ret; ++ } ++ } + + if (!pdata) + return -EINVAL; |