From 86da8c12ef0f86c7bd7a1cf95d71806dd9022969 Mon Sep 17 00:00:00 2001
From: Mario Six <mario.six@gdsys.cc>
Date: Fri, 27 Apr 2018 14:53:33 +0200
Subject: [PATCH] gdsys: drivers: Add gdsys_rxaui_ctrl driver
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>
---
drivers/misc/Kconfig | 6 ++-
drivers/misc/Makefile | 1 +
drivers/misc/gdsys_rxaui_ctrl.c | 76 +++++++++++++++++++++++++++++++++
3 files changed, 82 insertions(+), 1 deletion(-)
create mode 100644 drivers/misc/gdsys_rxaui_ctrl.c
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index d774569cbc..be900cf4d6 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -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
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 3dc59eecbe..e362609d62 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -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
diff --git a/drivers/misc/gdsys_rxaui_ctrl.c b/drivers/misc/gdsys_rxaui_ctrl.c
new file mode 100644
index 0000000000..9a63c329bc
--- /dev/null
+++ b/drivers/misc/gdsys_rxaui_ctrl.c
@@ -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),
+};
--
2.39.5