[U-Boot] [PATCH] gdsys: drivers: Add gdsys_rxaui_ctrl driver

[Mario Six]

Add a driver for RXAUI control on IHS FPGAs.

Signed-off-by: Mario Six <mario.six at gdsys.cc>
---
 drivers/misc/Kconfig            |  6 ++-
 drivers/misc/Makefile           |  1 +
 drivers/misc/gdsys_rxaui_ctrl.c | 91 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 97 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 e8d598cd47..4ab17129b1 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -54,3 +54,4 @@ 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..f9f84d4ff9
--- /dev/null
+++ b/drivers/misc/gdsys_rxaui_ctrl.c
@@ -0,0 +1,91 @@
+/*
+ * (C) Copyright 2015
+ * Dirk Eibach,  Guntermann & Drunck GmbH, eibach at gdsys.de
+ *
+ * (C) Copyright 2017
+ * Mario Six,  Guntermann & Drunck GmbH, mario.six at gdsys.cc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fpgamap.h>
+#include <misc.h>
+
+#include "../misc/gdsys_soc.h"
+
+enum {
+	REG_RXAUI_GEN_CNT = 0x0,
+	REG_RXAUI_ERR_CNT = 0x2,
+	REG_RXAUI_SUCC_CNT = 0x4,
+	REG_RXAUI_STATUS = 0x6,
+	REG_RXAUI_CTRL_0 = 0x8,
+	REG_RXAUI_CTRL_1 = 0xA,
+};
+
+struct gdsys_rxaui_ctrl_priv {
+	int addr;
+};
+
+int gdsys_rxaui_disable_polarity_inversion(struct udevice *dev)
+{
+	struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
+	struct udevice *fpga;
+	u16 val;
+
+	gdsys_soc_get_fpga(dev, &fpga);
+
+	fpgamap_read(fpga, priv->addr + REG_RXAUI_CTRL_1, &val,
+		     FPGAMAP_SIZE_16);
+	val &= ~0x7800;
+	fpgamap_write(fpga, priv->addr + REG_RXAUI_CTRL_1, &val,
+		      FPGAMAP_SIZE_16);
+
+	return 0;
+}
+
+int gdsys_rxaui_enable_polarity_inversion(struct udevice *dev)
+{
+	struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
+	struct udevice *fpga;
+	u16 val;
+
+	gdsys_soc_get_fpga(dev, &fpga);
+
+	fpgamap_read(fpga, priv->addr + REG_RXAUI_CTRL_1, &val,
+		     FPGAMAP_SIZE_16);
+	val |= ~0x7800;
+	fpgamap_write(fpga, priv->addr + REG_RXAUI_CTRL_1, &val,
+		      FPGAMAP_SIZE_16);
+
+	return 0;
+}
+
+static const struct misc_ops gdsys_rxaui_ctrl_ops = {
+	.disable = gdsys_rxaui_disable_polarity_inversion,
+	.enable = gdsys_rxaui_enable_polarity_inversion,
+};
+
+int gdsys_rxaui_ctrl_probe(struct udevice *dev)
+{
+	struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
+
+	priv->addr = dev_read_u32_default(dev, "reg", -1);
+
+	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),
+};
--
2.16.1