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86da8c12ef
Add a driver for RXAUI control on IHS FPGAs. Signed-off-by: Mario Six <mario.six@gdsys.cc> Reviewed-by: Simon Glass <sjg@chromium.org>
77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2015
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* Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
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*
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* (C) Copyright 2017
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* Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
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*/
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#include <common.h>
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#include <dm.h>
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#include <regmap.h>
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#include <misc.h>
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struct gdsys_rxaui_ctrl_regs {
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u16 gen_cnt;
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u16 err_cnt;
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u16 succ_cnt;
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u16 status;
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u16 ctrl_0;
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u16 ctrl_1;
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};
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#define rxaui_ctrl_set(map, member, val) \
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regmap_set(map, struct gdsys_rxaui_ctrl_regs, member, val)
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#define rxaui_ctrl_get(map, member, valp) \
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regmap_get(map, struct gdsys_rxaui_ctrl_regs, member, valp)
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struct gdsys_rxaui_ctrl_priv {
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struct regmap *map;
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};
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int gdsys_rxaui_set_polarity_inversion(struct udevice *dev, bool val)
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{
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struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
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u16 state;
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rxaui_ctrl_get(priv->map, ctrl_1, &state);
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if (val)
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state |= ~0x7800;
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else
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state &= ~0x7800;
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rxaui_ctrl_set(priv->map, ctrl_1, state);
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return 0;
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}
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static const struct misc_ops gdsys_rxaui_ctrl_ops = {
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.set_enabled = gdsys_rxaui_set_polarity_inversion,
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};
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int gdsys_rxaui_ctrl_probe(struct udevice *dev)
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{
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struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
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regmap_init_mem(dev, &priv->map);
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return 0;
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}
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static const struct udevice_id gdsys_rxaui_ctrl_ids[] = {
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{ .compatible = "gdsys,rxaui_ctrl" },
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{ }
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};
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U_BOOT_DRIVER(gdsys_rxaui_ctrl) = {
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.name = "gdsys_rxaui_ctrl",
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.id = UCLASS_MISC,
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.ops = &gdsys_rxaui_ctrl_ops,
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.of_match = gdsys_rxaui_ctrl_ids,
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.probe = gdsys_rxaui_ctrl_probe,
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.priv_auto_alloc_size = sizeof(struct gdsys_rxaui_ctrl_priv),
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};
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