--- /dev/null
+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2014 Daniel Elstner <daniel.kitta@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBSIGROK_HARDWARE_SYSCLK_LWLA_LWLA_H
+#define LIBSIGROK_HARDWARE_SYSCLK_LWLA_LWLA_H
+
+#include "libsigrok.h"
+#include <stdint.h>
+#include <libusb.h>
+#include <glib.h>
+
+struct sr_usb_dev_inst;
+
+/* Read mixed endian words from a buffer of 16-bit units. */
+#define LWLA_READ16(buf) GUINT16_FROM_LE(*(buf))
+#define LWLA_READ32(buf) \
+ (((uint32_t)GUINT16_FROM_LE((buf)[0]) << 16) | \
+ ((uint32_t)GUINT16_FROM_LE((buf)[1])))
+#define LWLA_READ64(buf) \
+ (((uint64_t)LWLA_READ32((buf))) | \
+ ((uint64_t)LWLA_READ32((buf) + 2) << 32))
+
+/* Convert 16-bit argument to little endian. */
+#define LWLA_WORD(val) GUINT16_TO_LE(val)
+
+/* Extract 16-bit units from 32/64-bit value in mixed endian order. */
+#define LWLA_WORD_0(val) GUINT16_TO_LE(((val) & 0xFFFF0000u) >> 16)
+#define LWLA_WORD_1(val) GUINT16_TO_LE(((val) & 0x0000FFFFu))
+#define LWLA_WORD_2(val) \
+ GUINT16_TO_LE(((val) & G_GUINT64_CONSTANT(0xFFFF000000000000)) >> 48)
+#define LWLA_WORD_3(val) \
+ GUINT16_TO_LE(((val) & G_GUINT64_CONSTANT(0x0000FFFF00000000)) >> 32)
+
+/** USB device end points.
+ */
+enum {
+ EP_COMMAND = 2,
+ EP_BITSTREAM = 4,
+ EP_REPLY = 6 | LIBUSB_ENDPOINT_IN
+};
+
+/** LWLA protocol command ID codes.
+ */
+enum {
+ CMD_READ_REG = 1,
+ CMD_WRITE_REG = 2,
+ CMD_READ_MEM = 6,
+ CMD_CAP_SETUP = 7,
+ CMD_CAP_STATUS = 8,
+};
+
+/** LWLA capture state flags.
+ */
+enum {
+ STATUS_CAPTURING = 1 << 1,
+ STATUS_TRIGGERED = 1 << 4,
+ STATUS_MEM_AVAIL = 1 << 5,
+ STATUS_FLAG_MASK = 0x3F
+};
+
+/** LWLA register addresses.
+ */
+enum {
+ REG_MEM_CTRL2 = 0x1074, /* capture buffer control ??? */
+ REG_MEM_FILL = 0x1078, /* capture buffer fill level */
+ REG_MEM_CTRL4 = 0x107C, /* capture buffer control ??? */
+
+ REG_DIV_BYPASS = 0x1094, /* bypass clock divider flag */
+
+ REG_CMD_CTRL1 = 0x10B0, /* command control ??? */
+ REG_CMD_CTRL2 = 0x10B4, /* command control ??? */
+ REG_CMD_CTRL3 = 0x10B8, /* command control ??? */
+ REG_CMD_CTRL4 = 0x10BC, /* command control ??? */
+
+ REG_FREQ_CH1 = 0x10C0, /* channel 1 live frequency */
+ REG_FREQ_CH2 = 0x10C4, /* channel 2 live frequency */
+ REG_FREQ_CH3 = 0x10C8, /* channel 3 live frequency */
+ REG_FREQ_CH4 = 0x10CC, /* channel 4 live frequency */
+};
+
+/** Register/value pair.
+ */
+struct regval_pair {
+ unsigned int reg;
+ unsigned int val;
+};
+
+SR_PRIV int lwla_send_bitstream(const struct sr_usb_dev_inst *usb,
+ const char *filename);
+
+SR_PRIV int lwla_send_command(const struct sr_usb_dev_inst *usb,
+ const uint16_t *command, int cmd_len);
+
+SR_PRIV int lwla_receive_reply(const struct sr_usb_dev_inst *usb,
+ uint16_t *reply, int reply_len, int expect_len);
+
+SR_PRIV int lwla_read_reg(const struct sr_usb_dev_inst *usb,
+ uint16_t reg, uint32_t *value);
+
+SR_PRIV int lwla_write_reg(const struct sr_usb_dev_inst *usb,
+ uint16_t reg, uint32_t value);
+
+SR_PRIV int lwla_write_regs(const struct sr_usb_dev_inst *usb,
+ const struct regval_pair *regvals, int count);
+
+#endif /* !LIBSIGROK_HARDWARE_SYSCLK_LWLA_LWLA_H */