1 files changed, 219 insertions, 0 deletions
diff --git a/board/matrix_vision/mvblx/fpga.c b/board/matrix_vision/mvblx/fpga.c
new file mode 100644
index 0000000000..dacc13845d
--- /dev/null
+++ b/board/matrix_vision/mvblx/fpga.c
@@ -0,0 +1,219 @@
+/*
+ * (C) Copyright 2002
+ * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
+ * Keith Outwater, keith_outwater@mvis.com.
+ *
+ * (C) Copyright 2011
+ * Andre Schwarz, Matrix Vision GmbH, andre.schwarz@matrix-vision.de
+ * Michael Jones, Matrix Vision GmbH, michael.jones@matrix-vision.de
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <ACEX1K.h>
+#include <command.h>
+#include <asm/gpio.h>
+#include "fpga.h"
+
+#ifdef FPGA_DEBUG
+#define fpga_debug(fmt, args...)      printf("%s: "fmt, __func__, ##args)
+#else
+#define fpga_debug(fmt, args...)
+#endif
+
+Altera_CYC2_Passive_Serial_fns altera_fns = {
+	fpga_null_fn,   /* Altera_pre_fn */
+	fpga_config_fn,
+	fpga_status_fn,
+	fpga_done_fn,
+	fpga_wr_fn,
+	fpga_null_fn,
+	fpga_null_fn,
+};
+
+Altera_desc cyclone2 = {
+	Altera_CYC2,
+	fast_passive_parallel,
+	Altera_EP3C5_SIZE,
+	(void *) &altera_fns,
+	NULL,
+	0
+};
+
+#define GPIO_RESET		43
+#define GPIO_DCLK		65
+#define GPIO_nSTATUS	157
+#define GPIO_CONF_DONE	158
+#define GPIO_nCONFIG	159
+#define GPIO_DATA0		54
+#define GPIO_DATA1		55
+#define GPIO_DATA2		56
+#define GPIO_DATA3		57
+#define GPIO_DATA4		58
+#define GPIO_DATA5		60
+#define GPIO_DATA6		61
+#define GPIO_DATA7		62
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* return FPGA_SUCCESS on success, else FPGA_FAIL
+ */
+int mvblx_init_fpga(void)
+{
+	fpga_debug("Initializing FPGA interface\n");
+	fpga_init();
+	fpga_add(fpga_altera, &cyclone2);
+
+	if (gpio_request(GPIO_DCLK, "dclk") ||
+			gpio_request(GPIO_nSTATUS, "nStatus") ||
+#ifndef CONFIG_SYS_FPGA_DONT_USE_CONF_DONE
+			gpio_request(GPIO_CONF_DONE, "conf_done") ||
+#endif
+			gpio_request(GPIO_nCONFIG, "nConfig") ||
+			gpio_request(GPIO_DATA0, "data0") ||
+			gpio_request(GPIO_DATA1, "data1") ||
+			gpio_request(GPIO_DATA2, "data2") ||
+			gpio_request(GPIO_DATA3, "data3") ||
+			gpio_request(GPIO_DATA4, "data4") ||
+			gpio_request(GPIO_DATA5, "data5") ||
+			gpio_request(GPIO_DATA6, "data6") ||
+			gpio_request(GPIO_DATA7, "data7")) {
+		printf("%s: error requesting GPIOs.", __func__);
+		return FPGA_FAIL;
+	}
+
+	/* set up outputs */
+	gpio_direction_output(GPIO_DCLK,  0);
+	gpio_direction_output(GPIO_nCONFIG, 0);
+	gpio_direction_output(GPIO_DATA0, 0);
+	gpio_direction_output(GPIO_DATA1, 0);
+	gpio_direction_output(GPIO_DATA2, 0);
+	gpio_direction_output(GPIO_DATA3, 0);
+	gpio_direction_output(GPIO_DATA4, 0);
+	gpio_direction_output(GPIO_DATA5, 0);
+	gpio_direction_output(GPIO_DATA6, 0);
+	gpio_direction_output(GPIO_DATA7, 0);
+
+	/* NB omap_free_gpio() resets to an input, so we can't
+	 * free ie. nCONFIG, or else the FPGA would reset
+	 * Q: presumably gpio_free() has the same effect?
+	 */
+
+	/* set up inputs */
+	gpio_direction_input(GPIO_nSTATUS);
+#ifndef CONFIG_SYS_FPGA_DONT_USE_CONF_DONE
+	gpio_direction_input(GPIO_CONF_DONE);
+#endif
+
+	fpga_config_fn(0, 1, 0);
+	udelay(60);
+
+	return FPGA_SUCCESS;
+}
+
+int fpga_null_fn(int cookie)
+{
+	return 0;
+}
+
+int fpga_config_fn(int assert, int flush, int cookie)
+{
+	fpga_debug("SET config : %s=%d\n", assert ? "low" : "high", assert);
+	if (flush) {
+		gpio_set_value(GPIO_nCONFIG, !assert);
+		udelay(1);
+		gpio_set_value(GPIO_nCONFIG, assert);
+	}
+
+	return assert;
+}
+
+int fpga_done_fn(int cookie)
+{
+	int result = 0;
+
+	/* since revA of BLX, we will not get this signal. */
+	udelay(10);
+#ifdef CONFIG_SYS_FPGA_DONT_USE_CONF_DONE
+	fpga_debug("not waiting for CONF_DONE.");
+	result = 1;
+#else
+	fpga_debug("CONF_DONE check ... ");
+	if (gpio_get_value(GPIO_CONF_DONE))  {
+		fpga_debug("high\n");
+		result = 1;
+	} else
+		fpga_debug("low\n");
+	gpio_free(GPIO_CONF_DONE);
+#endif
+
+	return result;
+}
+
+int fpga_status_fn(int cookie)
+{
+	int result = 0;
+	fpga_debug("STATUS check ... ");
+
+	result = gpio_get_value(GPIO_nSTATUS);
+
+	if (result < 0)
+		fpga_debug("error\n");
+	else if (result > 0)
+		fpga_debug("high\n");
+	else
+		fpga_debug("low\n");
+
+	return result;
+}
+
+static inline int _write_fpga(u8 byte)
+{
+	gpio_set_value(GPIO_DATA0, byte & 0x01);
+	gpio_set_value(GPIO_DATA1, (byte >> 1) & 0x01);
+	gpio_set_value(GPIO_DATA2, (byte >> 2) & 0x01);
+	gpio_set_value(GPIO_DATA3, (byte >> 3) & 0x01);
+	gpio_set_value(GPIO_DATA4, (byte >> 4) & 0x01);
+	gpio_set_value(GPIO_DATA5, (byte >> 5) & 0x01);
+	gpio_set_value(GPIO_DATA6, (byte >> 6) & 0x01);
+	gpio_set_value(GPIO_DATA7, (byte >> 7) & 0x01);
+
+	/* clock */
+	gpio_set_value(GPIO_DCLK, 1);
+	udelay(1);
+	gpio_set_value(GPIO_DCLK, 0);
+	udelay(1);
+
+	return 0;
+}
+
+int fpga_wr_fn(const void *buf, size_t len, int flush, int cookie)
+{
+	unsigned char *data = (unsigned char *) buf;
+	int i;
+
+	fpga_debug("fpga_wr: buf %p / size %d\n", buf, len);
+	for (i = 0; i < len; i++)
+		_write_fpga(data[i]);
+	fpga_debug("-%s\n", __func__);
+
+	return FPGA_SUCCESS;
+}