Add a driver for RXAUI control on IHS FPGAs.
Signed-off-by: Mario Six <mario....@gdsys.cc>
---
drivers/misc/Kconfig | 6 +++
drivers/misc/Makefile | 1 +
drivers/misc/gdsys_rxaui_ctrl.c | 107 ++++++++++++++++++++++++++++++++++++++++
include/dm/uclass-id.h | 1 +
include/gdsys_rxaui_ctrl.h | 66 +++++++++++++++++++++++++
5 files changed, 181 insertions(+)
create mode 100644 drivers/misc/gdsys_rxaui_ctrl.c
create mode 100644 include/gdsys_rxaui_ctrl.h
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index c0e4b921b4..dd768e2a7a 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -215,4 +215,10 @@ config IHS_VIDEO_OUT
help
Support for IHS video out.
+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 eab539b739..3ff9e66da2 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -55,3 +55,4 @@ obj-$(CONFIG_ROCKCHIP_EFUSE) += rockchip-efuse.o
obj-$(CONFIG_IHS_FPGA) += ihs_fpga.o gdsys_soc.o
obj-$(CONFIG_IHS_AXI) += ihs_axi.o
obj-$(CONFIG_IHS_VIDEO_OUT) += ihs_video_out.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..37fe76b857
--- /dev/null
+++ b/drivers/misc/gdsys_rxaui_ctrl.c
@@ -0,0 +1,107 @@
+/*
+ * (C) Copyright 2015
+ * Dirk Eibach, Guntermann & Drunck GmbH, eib...@gdsys.de
+ *
+ * (C) Copyright 2017
+ * Mario Six, Guntermann & Drunck GmbH, mario....@gdsys.cc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <gdsys_soc.h>
+#include <ihs_fpga.h>
+#include <gdsys_rxaui_ctrl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+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 rxaui_disable_polarity_inversion(struct udevice *dev)
+{
+ struct rxaui_ctrl_ops *ops = rxaui_ctrl_get_ops(dev);
+
+ return ops->disable_polarity_inversion(dev);
+}
+
+int rxaui_enable_polarity_inversion(struct udevice *dev)
+{
+ struct rxaui_ctrl_ops *ops = rxaui_ctrl_get_ops(dev);
+
+ return ops->enable_polarity_inversion(dev);
+}
+
+UCLASS_DRIVER(rxaui_ctrl) = {
+ .id = UCLASS_RXAUI_CTRL,
+ .name = "rxaui_ctrl",
+ .flags = DM_UC_FLAG_SEQ_ALIAS,
+};
+
+int gdsys_rxaui_disable_polarity_inversion(struct udevice *dev)
+{
+ struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
+ struct gdsys_soc_child_platdata *pplat = dev_get_parent_platdata(dev);
+ u16 val;
+
+ val = fpga_in_le16(pplat->fpga,
+ priv->addr + REG_RXAUI_CTRL_1);
+ fpga_out_le16(pplat->fpga, priv->addr + REG_RXAUI_CTRL_1,
+ val & ~0x7800);
+
+ return 0;
+}
+
+int gdsys_rxaui_enable_polarity_inversion(struct udevice *dev)
+{
+ struct gdsys_rxaui_ctrl_priv *priv = dev_get_priv(dev);
+ struct gdsys_soc_child_platdata *pplat = dev_get_parent_platdata(dev);
+ u16 val;
+
+ val = fpga_in_le16(pplat->fpga,
+ priv->addr + REG_RXAUI_CTRL_1);
+ fpga_out_le16(pplat->fpga, priv->addr + REG_RXAUI_CTRL_1,
+ val | 0x7800);
+
+ return 0;
+}
+
+static const struct rxaui_ctrl_ops gdsys_rxaui_ctrl_ops = {
+ .disable_polarity_inversion = gdsys_rxaui_disable_polarity_inversion,
+ .enable_polarity_inversion = 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 = fdtdec_get_int(gd->fdt_blob, dev_of_offset(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_RXAUI_CTRL,
+ .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),
+};
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index a40185d2bb..35e478cc74 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -73,6 +73,7 @@ enum uclass_id {
UCLASS_REMOTEPROC, /* Remote Processor device */
UCLASS_RESET, /* Reset controller device */
UCLASS_RTC, /* Real time clock device */
+ UCLASS_RXAUI_CTRL, /* gdsys RXAUI control device */
UCLASS_SCSI, /* SCSI device */
UCLASS_SERIAL, /* Serial UART */
UCLASS_SPI, /* SPI bus */
diff --git a/include/gdsys_rxaui_ctrl.h b/include/gdsys_rxaui_ctrl.h
new file mode 100644
index 0000000000..29f26f5f5a
--- /dev/null
+++ b/include/gdsys_rxaui_ctrl.h
@@ -0,0 +1,66 @@
+/*
+ * (C) Copyright 2017
+ * Mario Six, Guntermann & Drunck GmbH, mario....@gdsys.cc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _GDSYS_RXAUI_CTRL_H_
+#define _GDSYS_RXAUI_CTRL_H_
+
+/**
+ * The GDSYS RXAUI control is a driver for the Xilinx LogiCORE IP RXAUI core
+ * used in gdsys IHS FPGAs, which is a low pin count 10 Gb/s interface intended
+ * to allow physical separation between the data-link layer and physical layer
+ * devices in a 10 Gb/s Ethernet system.
+ */
+
+/**
+ * struct ihs_fpga_ops - driver operations for IHS RXAUI uclass
+ *
+ * Drivers should support these operations unless otherwise noted. These
+ * operations are intended to be used by uclass code, not directly from
+ * other code.
+ */
+struct rxaui_ctrl_ops {
+ /**
+ * disable_polarity_inversion() - Disable RX and TX polarity inversion
+ * on the given IHS RXAUI control
+ * instance
+ *
+ * @dev: The IHS RXAUI control instance.
+ * @return 0 if OK, -ve on error.
+ */
+ int (*disable_polarity_inversion)(struct udevice *dev);
+
+ /**
+ * enable_polarity_inversion() - Enable RX and TX polarity inversion on
+ * the given IHS RXAUI control instance
+ *
+ * @dev: The IHS RXAUI control instance.
+ * @return 0 if OK, -ve on error.
+ */
+ int (*enable_polarity_inversion)(struct udevice *dev);
+};
+
+#define rxaui_ctrl_get_ops(dev) ((struct rxaui_ctrl_ops
*)(dev)->driver->ops)
+
+/**
+ * rxaui_disable_polarity_inversion() - Disable RX and TX polarity inversion on
+ * the given IHS RXAUI control instance
+ *
+ * @dev: The IHS RXAUI control instance.
+ * @return 0 if OK, -ve on error.
+ */
+int rxaui_disable_polarity_inversion(struct udevice *dev);
+
+/**
+ * rxaui_enable_polarity_inversion() - Enable RX and TX polarity inversion on
+ * the given IHS RXAUI control instance
+ *
+ * @dev: The IHS RXAUI control instance.
+ * @return 0 if OK, -ve on error.
+ */
+int rxaui_enable_polarity_inversion(struct udevice *dev);
+
+#endif /* _GDSYS_RXAUI_CTRL_H_ */
--
2.11.0
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