1 From a5538a777b73b35750ed1ffff8c1ef539e861624 Mon Sep 17 00:00:00 2001
2 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
3 Date: Wed, 17 Mar 2021 10:23:17 +0100
4 Subject: [PATCH] net: dsa: b53: mmap: Add device tree support
6 Content-Type: text/plain; charset=UTF-8
7 Content-Transfer-Encoding: 8bit
9 Add device tree support to b53_mmap.c while keeping platform devices support.
11 Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
12 Signed-off-by: David S. Miller <davem@davemloft.net>
14 drivers/net/dsa/b53/b53_mmap.c | 55 ++++++++++++++++++++++++++++++++++
15 1 file changed, 55 insertions(+)
17 --- a/drivers/net/dsa/b53/b53_mmap.c
18 +++ b/drivers/net/dsa/b53/b53_mmap.c
20 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 +#include <linux/bits.h>
24 #include <linux/kernel.h>
25 #include <linux/module.h>
27 @@ -228,11 +229,65 @@ static const struct b53_io_ops b53_mmap_
28 .write64 = b53_mmap_write64,
31 +static int b53_mmap_probe_of(struct platform_device *pdev,
32 + struct b53_platform_data **ppdata)
34 + struct device_node *np = pdev->dev.of_node;
35 + struct device_node *of_ports, *of_port;
36 + struct device *dev = &pdev->dev;
37 + struct b53_platform_data *pdata;
40 + mem = devm_platform_ioremap_resource(pdev, 0);
42 + return PTR_ERR(mem);
44 + pdata = devm_kzalloc(dev, sizeof(struct b53_platform_data),
50 + pdata->chip_id = BCM63XX_DEVICE_ID;
51 + pdata->big_endian = of_property_read_bool(np, "big-endian");
53 + of_ports = of_get_child_by_name(np, "ports");
55 + dev_err(dev, "no ports child node found\n");
59 + for_each_available_child_of_node(of_ports, of_port) {
62 + if (of_property_read_u32(of_port, "reg", ®))
65 + if (reg < B53_CPU_PORT)
66 + pdata->enabled_ports |= BIT(reg);
69 + of_node_put(of_ports);
75 static int b53_mmap_probe(struct platform_device *pdev)
77 + struct device_node *np = pdev->dev.of_node;
78 struct b53_platform_data *pdata = pdev->dev.platform_data;
79 struct b53_mmap_priv *priv;
80 struct b53_device *dev;
84 + ret = b53_mmap_probe_of(pdev, &pdata);
86 + dev_err(&pdev->dev, "OF probe error\n");