generic: rtl8366s: add support support for initvals from DTS
authorTobias Wolf <github-NTEO@vplace.de>
Wed, 25 Jan 2017 15:22:13 +0000 (16:22 +0100)
committerMathias Kresin <dev@kresin.me>
Fri, 27 Jan 2017 10:10:10 +0000 (11:10 +0100)
This change provides the possibility to define per-device initvals in
the DTS file for a rlt8366s switch.

Signed-off-by: Tobias Wolf <github-NTEO@vplace.de>
target/linux/generic/files/drivers/net/phy/rtl8366s.c

index 3dc2a87..b54b4b1 100644 (file)
@@ -254,17 +254,42 @@ static int rtl8366s_setup(struct rtl8366_smi *smi)
 {
        struct rtl8366_platform_data *pdata;
        int err;
+       unsigned i;
+#ifdef CONFIG_OF
+       struct device_node *np;
+       unsigned num_initvals;
+       const __be32 *paddr;
+#endif
 
        pdata = smi->parent->platform_data;
        if (pdata && pdata->num_initvals && pdata->initvals) {
-               unsigned i;
-
                dev_info(smi->parent, "applying initvals\n");
                for (i = 0; i < pdata->num_initvals; i++)
                        REG_WR(smi, pdata->initvals[i].reg,
                               pdata->initvals[i].val);
        }
 
+#ifdef CONFIG_OF
+       np = smi->parent->of_node;
+
+       paddr = of_get_property(np, "realtek,initvals", &num_initvals);
+       if (paddr) {
+               dev_info(smi->parent, "applying initvals from DTS\n");
+
+               if (num_initvals < (2 * sizeof(*paddr)))
+                       return -EINVAL;
+
+               num_initvals /= sizeof(*paddr);
+
+               for (i = 0; i < num_initvals - 1; i += 2) {
+                       u32 reg = be32_to_cpup(paddr + i);
+                       u32 val = be32_to_cpup(paddr + i + 1);
+
+                       REG_WR(smi, reg, val);
+               }
+       }
+#endif
+
        /* set maximum packet length to 1536 bytes */
        REG_RMW(smi, RTL8366S_SGCR, RTL8366S_SGCR_MAX_LENGTH_MASK,
                RTL8366S_SGCR_MAX_LENGTH_1536);