1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2015
4 * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
5 *
6 * (C) Copyright 2017
7 * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
8 */
9
10 #include <common.h>
11 #include <dm.h>
12 #include <regmap.h>
13 #include <misc.h>
14
15 struct gdsys_rxaui_ctrl_regs {
16 u16 gen_cnt;
17 u16 err_cnt;
18 u16 succ_cnt;
19 u16 status;
20 u16 ctrl_0;
21 u16 ctrl_1;
22 };
23
24 #define rxaui_ctrl_set(map, member, val) \
25 regmap_set(map, struct gdsys_rxaui_ctrl_regs, member, val)
26
27 #define rxaui_ctrl_get(map, member, valp) \
28 regmap_get(map, struct gdsys_rxaui_ctrl_regs, member, valp)
29
30 struct gdsys_rxaui_ctrl_priv {
31 struct regmap *map;
32 };
33
gdsys_rxaui_set_polarity_inversion(struct udevice * dev,bool val)34 int gdsys_rxaui_set_polarity_inversion(struct udevice *dev, bool val)
35 {
36 struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
37 u16 state;
38
39 rxaui_ctrl_get(priv->map, ctrl_1, &state);
40
41 if (val)
42 state |= ~0x7800;
43 else
44 state &= ~0x7800;
45
46 rxaui_ctrl_set(priv->map, ctrl_1, state);
47
48 return 0;
49 }
50
51 static const struct misc_ops gdsys_rxaui_ctrl_ops = {
52 .set_enabled = gdsys_rxaui_set_polarity_inversion,
53 };
54
gdsys_rxaui_ctrl_probe(struct udevice * dev)55 int gdsys_rxaui_ctrl_probe(struct udevice *dev)
56 {
57 struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
58
59 regmap_init_mem(dev, &priv->map);
60
61 return 0;
62 }
63
64 static const struct udevice_id gdsys_rxaui_ctrl_ids[] = {
65 { .compatible = "gdsys,rxaui_ctrl" },
66 { }
67 };
68
69 U_BOOT_DRIVER(gdsys_rxaui_ctrl) = {
70 .name = "gdsys_rxaui_ctrl",
71 .id = UCLASS_MISC,
72 .ops = &gdsys_rxaui_ctrl_ops,
73 .of_match = gdsys_rxaui_ctrl_ids,
74 .probe = gdsys_rxaui_ctrl_probe,
75 .priv_auto_alloc_size = sizeof(struct gdsys_rxaui_ctrl_priv),
76 };
77