1 files changed, 115 insertions, 0 deletions
diff --git a/board/ads5121/iopin.c b/board/ads5121/iopin.c
new file mode 100644
index 0000000..a6792a0
--- /dev/null
+++ b/board/ads5121/iopin.c
@@ -0,0 +1,115 @@
+/*
+ * (C) Copyright 2008
+ * Martha J Marx, Silicon Turnkey Express, mmarx@silicontkx.com
+ * mpc512x I/O pin/pad initialization for the ADS5121 board
+ * 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 <linux/types.h>
+#include "iopin.h"
+
+/* IO pin fields */
+#define IO_PIN_FMUX(v)	((v) << 7)	/* pin function */
+#define IO_PIN_HOLD(v)	((v) << 5)	/* hold time, pci only */
+#define IO_PIN_PUD(v)	((v) << 4)	/* if PUE, 0=pull-down, 1=pull-up */
+#define IO_PIN_PUE(v)	((v) << 3)	/* pull up/down enable */
+#define IO_PIN_ST(v)	((v) << 2)	/* schmitt trigger */
+#define IO_PIN_DS(v)	((v))		/* slew rate */
+
+static struct iopin_t {
+	int p_offset;		/* offset from IOCTL_MEM_OFFSET */
+	int nr_pins;		/* number of pins to set this way */
+	int bit_or;		/* or in the value instead of overwrite */
+	u_long val;		/* value to write or or */
+} ioregs_init[] = {
+	/* FUNC1=FEC_RX_DV Sets Next 3 to FEC pads */
+	{
+		IOCTL_SPDIF_TXCLK, 3, 0,
+		IO_PIN_FMUX(1) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
+		IO_PIN_PUE(0) | IO_PIN_ST(0) | IO_PIN_DS(3)
+	},
+	/* Set highest Slew on 9 PATA pins */
+	{
+		IOCTL_PATA_CE1, 9, 1,
+		IO_PIN_FMUX(0) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
+		IO_PIN_PUE(0) | IO_PIN_ST(0) | IO_PIN_DS(3)
+	},
+	/* FUNC1=FEC_COL Sets Next 15 to FEC pads */
+	{
+		IOCTL_PSC0_0, 15, 0,
+		IO_PIN_FMUX(1) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
+		IO_PIN_PUE(0) | IO_PIN_ST(0) | IO_PIN_DS(3)
+	},
+	/* FUNC1=SPDIF_TXCLK */
+	{
+		IOCTL_LPC_CS1, 1, 0,
+		IO_PIN_FMUX(1) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
+		IO_PIN_PUE(0) | IO_PIN_ST(1) | IO_PIN_DS(3)
+	},
+	/* FUNC2=SPDIF_TX and sets Next pin to SPDIF_RX */
+	{
+		IOCTL_I2C1_SCL, 2, 0,
+		IO_PIN_FMUX(2) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
+		IO_PIN_PUE(0) | IO_PIN_ST(1) | IO_PIN_DS(3)
+	},
+	/* FUNC2=DIU CLK */
+	{
+		IOCTL_PSC6_0, 1, 0,
+		IO_PIN_FMUX(2) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
+		IO_PIN_PUE(0) | IO_PIN_ST(1) | IO_PIN_DS(3)
+	},
+	/* FUNC2=DIU_HSYNC */
+	{
+		IOCTL_PSC6_1, 1, 0,
+		IO_PIN_FMUX(2) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
+		IO_PIN_PUE(0) | IO_PIN_ST(0) | IO_PIN_DS(3)
+	},
+	/* FUNC2=DIUVSYNC Sets Next 26 to DIU Pads */
+	{
+		IOCTL_PSC6_4, 26, 0,
+		IO_PIN_FMUX(2) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
+		IO_PIN_PUE(0) | IO_PIN_ST(0) | IO_PIN_DS(3)
+	}
+};
+
+void iopin_initialize(void)
+{
+	short i, j, n, p;
+	u_long *reg;
+	immap_t *im = (immap_t *)CFG_IMMR;
+
+	reg = (u_long *)&(im->io_ctrl.regs[0]);
+
+	if (sizeof(ioregs_init) == 0)
+		return;
+
+	n = sizeof(ioregs_init) / sizeof(ioregs_init[0]);
+
+	for (i = 0; i < n; i++) {
+		for (p = 0, j = ioregs_init[i].p_offset / sizeof(u_long);
+			p < ioregs_init[i].nr_pins; p++, j++) {
+			if (ioregs_init[i].bit_or)
+				reg[j] |= ioregs_init[i].val;
+			else
+				reg[j] = ioregs_init[i].val;
+		}
+	}
+	return;
+}