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gdsys: drivers: Add gdsys_rxaui_ctrl driver

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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>
This commit is contained in:
Mario Six 2018-04-27 14:53:33 +02:00 • committed by Tom Rini
parent f0bcbe6c18
commit 86da8c12ef
3 changed files with 82 additions and 1 deletions
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6
drivers/misc/Kconfig
View file

@ -263,5 +263,9 @@ config SYS_I2C_EEPROM_ADDR_OVERFLOW
endif
config GDSYS_RXAUI_CTRL
bool "Enable gdsys RXAUI control driver"
depends on MISC
help
Support gdsys FPGA's RXAUI control.
endmenu

1
drivers/misc/Makefile
View file

@ -52,3 +52,4 @@ obj-$(CONFIG_QFW) += qfw.o
obj-$(CONFIG_ROCKCHIP_EFUSE) += rockchip-efuse.o
obj-$(CONFIG_STM32_RCC) += stm32_rcc.o
obj-$(CONFIG_SYS_DPAA_QBMAN) += fsl_portals.o
obj-$(CONFIG_GDSYS_RXAUI_CTRL) += gdsys_rxaui_ctrl.o

76
drivers/misc/gdsys_rxaui_ctrl.c Normal file
View file

@ -0,0 +1,76 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015
* Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
*
* (C) Copyright 2017
* Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
*/
#include <common.h>
#include <dm.h>
#include <regmap.h>
#include <misc.h>
struct gdsys_rxaui_ctrl_regs {
u16 gen_cnt;
u16 err_cnt;
u16 succ_cnt;
u16 status;
u16 ctrl_0;
u16 ctrl_1;
};
#define rxaui_ctrl_set(map, member, val) \
regmap_set(map, struct gdsys_rxaui_ctrl_regs, member, val)
#define rxaui_ctrl_get(map, member, valp) \
regmap_get(map, struct gdsys_rxaui_ctrl_regs, member, valp)
struct gdsys_rxaui_ctrl_priv {
struct regmap *map;
};
int gdsys_rxaui_set_polarity_inversion(struct udevice *dev, bool val)
{
struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
u16 state;
rxaui_ctrl_get(priv->map, ctrl_1, &state);
if (val)
state |= ~0x7800;
else
state &= ~0x7800;
rxaui_ctrl_set(priv->map, ctrl_1, state);
return 0;
}
static const struct misc_ops gdsys_rxaui_ctrl_ops = {
.set_enabled = gdsys_rxaui_set_polarity_inversion,
};
int gdsys_rxaui_ctrl_probe(struct udevice *dev)
{
struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
regmap_init_mem(dev, &priv->map);
return 0;
}
static const struct udevice_id gdsys_rxaui_ctrl_ids[] = {
{ .compatible = "gdsys,rxaui_ctrl" },
{ }
};
U_BOOT_DRIVER(gdsys_rxaui_ctrl) = {
.name = "gdsys_rxaui_ctrl",
.id = UCLASS_MISC,
.ops = &gdsys_rxaui_ctrl_ops,
.of_match = gdsys_rxaui_ctrl_ids,
.probe = gdsys_rxaui_ctrl_probe,
.priv_auto_alloc_size = sizeof(struct gdsys_rxaui_ctrl_priv),
};