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 
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 
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