Made the libatspi API driver-agnostic.

- tools/include/atspi.h: API is now driver-independent - tools/lib/driver.h: API between driver and frontend - tools/lib/atspi.c: renamed to atusb.c and updated for driver API - tools/lib/atspi.c: frontend functions for the driver API - tools/lib/Makefile: added atusb.o
2025-04-21 12:27:27 +03:00 · 2010-09-05 18:59:42 -03:00
parent 36e73c4abb
commit e2b2df2e31
5 changed files with 286 additions and 137 deletions
--- a/tools/lib/atusb.c
+++ b/tools/lib/atusb.c
@@ -0,0 +1,203 @@
+/*
+ * lib/atusb.c - ATSPI access functions library (USB version)
+ *
+ * Written 2010 by Werner Almesberger
+ * Copyright 2010 Werner Almesberger
+ *
+ * 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 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#include <stdio.h>
+#include <usb.h>
+
+#include "f32xbase/usb.h"
+#include "atspi/ep0.h"
+#include "atspi/usb-ids.h"
+
+#include "driver.h"
+
+
+#define FROM_DEV	ATSPI_FROM_DEV(0)
+#define TO_DEV		ATSPI_TO_DEV(0)
+
+
+/* ----- error handling ---------------------------------------------------- */
+
+
+static int error;
+
+
+int atusb_error(void)
+{
+	return error;
+}
+
+
+int atusb_clear_error(void)
+{
+	int ret;
+
+	ret = error;
+	error = 0;
+	return ret;
+}
+
+
+/* ----- open/close -------------------------------------------------------- */
+
+
+static void *atusb_open(void)
+{
+	usb_dev_handle *dev;
+
+	dev = open_usb(USB_VENDOR, USB_PRODUCT);
+	if (dev) {
+		error = 0;
+	} else {
+		fprintf(stderr, ":-(\n");
+		error = 1;
+	}
+	return dev;
+}
+
+
+static void atusb_close(void *dsc)
+{
+	/* to do */
+}
+
+
+/* ----- device mode ------------------------------------------------------- */
+
+
+static void atusb_reset(void *dsc)
+{
+	usb_dev_handle *dev = dsc;
+	int res;
+
+	if (error)
+		return;
+
+	res =
+	    usb_control_msg(dev, TO_DEV, ATSPI_RESET, 0, 0, NULL, 0, 1000);
+	if (res < 0) {
+		fprintf(stderr, "ATSPI_RESET: %d\n", res);
+		error = 1;
+	}
+}
+
+
+static void atusb_reset_rf(void *dsc)
+{
+	usb_dev_handle *dev = dsc;
+	int res;
+
+	if (error)
+		return;
+
+	res =
+	    usb_control_msg(dev, TO_DEV, ATSPI_RF_RESET, 0, 0, NULL, 0, 1000);
+	if (res < 0) {
+		fprintf(stderr, "ATSPI_RF_RESET: %d\n", res);
+		error = 1;
+	}
+}
+
+
+/* ----- register access --------------------------------------------------- */
+
+
+static void atusb_reg_write(void *dsc, uint8_t reg, uint8_t value)
+{
+	usb_dev_handle *dev = dsc;
+	int res;
+
+	if (error)
+		return;
+
+	res = usb_control_msg(dev, TO_DEV, ATSPI_REG_WRITE, value, reg,
+	    NULL, 0, 1000);
+	if (res < 0) {
+		fprintf(stderr, "ATSPI_REG_WRITE: %d\n", res);
+		error = 1;
+	}
+}
+
+
+static uint8_t atusb_reg_read(void *dsc, uint8_t reg)
+{
+	usb_dev_handle *dev = dsc;
+	uint8_t value = 0;
+	int res;
+
+	if (error)
+		return 0;
+
+	res = usb_control_msg(dev, FROM_DEV, ATSPI_REG_READ, 0, reg,
+	    (void *) &value, 1, 1000);
+	if (res < 0) {
+		fprintf(stderr, "ATSPI_REG_READ: %d\n", res);
+		error = 1;
+	}
+	return value;
+}
+
+
+/* ----- frame buffer access ----------------------------------------------- */
+
+
+static void atusb_buf_write(void *dsc, const void *buf, int size)
+{
+	usb_dev_handle *dev = dsc;
+	int res;
+
+	if (error)
+		return;
+
+	res = usb_control_msg(dev, TO_DEV, ATSPI_BUF_WRITE, 0, 0,
+	    (void *) buf, size, 1000);
+	if (res < 0) {
+		fprintf(stderr, "ATSPI_BUF_WRITE: %d\n", res);
+		error = 1;
+	}
+
+}
+
+
+static int atusb_buf_read(void *dsc, void *buf, int size)
+{
+	usb_dev_handle *dev = dsc;
+	int res;
+
+	if (error)
+		return -1;
+
+	res = usb_control_msg(dev, FROM_DEV, ATSPI_BUF_READ, 0, 0,
+	    buf, size, 1000);
+	if (res < 0) {
+		fprintf(stderr, "ATSPI_BUF_READ: %d\n", res);
+		error = 1;
+	}
+
+	return res;
+}
+
+
+/* ----- driver interface -------------------------------------------------- */
+
+
+struct atspi_driver atusb_driver = {
+	.name		= "atusb",
+	.open		= atusb_open,
+	.close		= atusb_close,
+	.reset		= atusb_reset,
+	.reset_rf	= atusb_reset_rf,
+	.reg_write	= atusb_reg_write,
+	.reg_read	= atusb_reg_read,
+	.buf_write	= atusb_buf_write,
+	.buf_read	= atusb_buf_read,
+};