1 files changed, 275 insertions, 0 deletions
diff --git a/arch/mips/pic32/pic32mzda/early_pin.c b/arch/mips/pic32/pic32mzda/early_pin.c
new file mode 100644
index 000000000..aa673f802
--- /dev/null
+++ b/arch/mips/pic32/pic32mzda/early_pin.c
@@ -0,0 +1,275 @@
+/*
+ * Joshua Henderson <joshua.henderson@microchip.com>
+ * Copyright (C) 2015 Microchip Technology Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.
+ */
+#include <asm/io.h>
+
+#include "early_pin.h"
+
+#define PPS_BASE 0x1f800000
+
+/* Input PPS Registers */
+#define INT1R 0x1404
+#define INT2R 0x1408
+#define INT3R 0x140C
+#define INT4R 0x1410
+#define T2CKR 0x1418
+#define T3CKR 0x141C
+#define T4CKR 0x1420
+#define T5CKR 0x1424
+#define T6CKR 0x1428
+#define T7CKR 0x142C
+#define T8CKR 0x1430
+#define T9CKR 0x1434
+#define IC1R 0x1438
+#define IC2R 0x143C
+#define IC3R 0x1440
+#define IC4R 0x1444
+#define IC5R 0x1448
+#define IC6R 0x144C
+#define IC7R 0x1450
+#define IC8R 0x1454
+#define IC9R 0x1458
+#define OCFAR 0x1460
+#define U1RXR 0x1468
+#define U1CTSR 0x146C
+#define U2RXR 0x1470
+#define U2CTSR 0x1474
+#define U3RXR 0x1478
+#define U3CTSR 0x147C
+#define U4RXR 0x1480
+#define U4CTSR 0x1484
+#define U5RXR 0x1488
+#define U5CTSR 0x148C
+#define U6RXR 0x1490
+#define U6CTSR 0x1494
+#define SDI1R 0x149C
+#define SS1R 0x14A0
+#define SDI2R 0x14A8
+#define SS2R 0x14AC
+#define SDI3R 0x14B4
+#define SS3R 0x14B8
+#define SDI4R 0x14C0
+#define SS4R 0x14C4
+#define SDI5R 0x14CC
+#define SS5R 0x14D0
+#define SDI6R 0x14D8
+#define SS6R 0x14DC
+#define C1RXR 0x14E0
+#define C2RXR 0x14E4
+#define REFCLKI1R 0x14E8
+#define REFCLKI3R 0x14F0
+#define REFCLKI4R 0x14F4
+
+static const struct
+{
+	int function;
+	int reg;
+} input_pin_reg[] = {
+	{ IN_FUNC_INT3, INT3R },
+	{ IN_FUNC_T2CK, T2CKR },
+	{ IN_FUNC_T6CK, T6CKR },
+	{ IN_FUNC_IC3, IC3R  },
+	{ IN_FUNC_IC7, IC7R },
+	{ IN_FUNC_U1RX, U1RXR },
+	{ IN_FUNC_U2CTS, U2CTSR },
+	{ IN_FUNC_U5RX, U5RXR },
+	{ IN_FUNC_U6CTS, U6CTSR },
+	{ IN_FUNC_SDI1, SDI1R },
+	{ IN_FUNC_SDI3, SDI3R },
+	{ IN_FUNC_SDI5, SDI5R },
+	{ IN_FUNC_SS6, SS6R },
+	{ IN_FUNC_REFCLKI1, REFCLKI1R },
+	{ IN_FUNC_INT4, INT4R },
+	{ IN_FUNC_T5CK, T5CKR },
+	{ IN_FUNC_T7CK, T7CKR },
+	{ IN_FUNC_IC4, IC4R },
+	{ IN_FUNC_IC8, IC8R },
+	{ IN_FUNC_U3RX, U3RXR },
+	{ IN_FUNC_U4CTS, U4CTSR },
+	{ IN_FUNC_SDI2, SDI2R },
+	{ IN_FUNC_SDI4, SDI4R },
+	{ IN_FUNC_C1RX, C1RXR },
+	{ IN_FUNC_REFCLKI4, REFCLKI4R },
+	{ IN_FUNC_INT2, INT2R },
+	{ IN_FUNC_T3CK, T3CKR },
+	{ IN_FUNC_T8CK, T8CKR },
+	{ IN_FUNC_IC2, IC2R },
+	{ IN_FUNC_IC5, IC5R },
+	{ IN_FUNC_IC9, IC9R },
+	{ IN_FUNC_U1CTS, U1CTSR },
+	{ IN_FUNC_U2RX, U2RXR },
+	{ IN_FUNC_U5CTS, U5CTSR },
+	{ IN_FUNC_SS1, SS1R },
+	{ IN_FUNC_SS3, SS3R },
+	{ IN_FUNC_SS4, SS4R },
+	{ IN_FUNC_SS5, SS5R },
+	{ IN_FUNC_C2RX, C2RXR },
+	{ IN_FUNC_INT1, INT1R },
+	{ IN_FUNC_T4CK, T4CKR },
+	{ IN_FUNC_T9CK, T9CKR },
+	{ IN_FUNC_IC1, IC1R },
+	{ IN_FUNC_IC6, IC6R },
+	{ IN_FUNC_U3CTS, U3CTSR },
+	{ IN_FUNC_U4RX, U4RXR },
+	{ IN_FUNC_U6RX, U6RXR },
+	{ IN_FUNC_SS2, SS2R },
+	{ IN_FUNC_SDI6, SDI6R },
+	{ IN_FUNC_OCFA, OCFAR },
+	{ IN_FUNC_REFCLKI3, REFCLKI3R },
+};
+
+void pic32_pps_input(int function, int pin)
+{
+	void __iomem *pps_base = ioremap_nocache(PPS_BASE, 0xF4);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(input_pin_reg); i++) {
+		if (input_pin_reg[i].function == function) {
+			__raw_writel(pin, pps_base + input_pin_reg[i].reg);
+			return;
+		}
+	}
+
+	iounmap(pps_base);
+}
+
+/* Output PPS Registers */
+#define RPA14R 0x1538
+#define RPA15R 0x153C
+#define RPB0R 0x1540
+#define RPB1R 0x1544
+#define RPB2R 0x1548
+#define RPB3R 0x154C
+#define RPB5R 0x1554
+#define RPB6R 0x1558
+#define RPB7R 0x155C
+#define RPB8R 0x1560
+#define RPB9R 0x1564
+#define RPB10R 0x1568
+#define RPB14R 0x1578
+#define RPB15R 0x157C
+#define RPC1R 0x1584
+#define RPC2R 0x1588
+#define RPC3R 0x158C
+#define RPC4R 0x1590
+#define RPC13R 0x15B4
+#define RPC14R 0x15B8
+#define RPD0R 0x15C0
+#define RPD1R 0x15C4
+#define RPD2R 0x15C8
+#define RPD3R 0x15CC
+#define RPD4R 0x15D0
+#define RPD5R 0x15D4
+#define RPD6R 0x15D8
+#define RPD7R 0x15DC
+#define RPD9R 0x15E4
+#define RPD10R 0x15E8
+#define RPD11R 0x15EC
+#define RPD12R 0x15F0
+#define RPD14R 0x15F8
+#define RPD15R 0x15FC
+#define RPE3R 0x160C
+#define RPE5R 0x1614
+#define RPE8R 0x1620
+#define RPE9R 0x1624
+#define RPF0R 0x1640
+#define RPF1R 0x1644
+#define RPF2R 0x1648
+#define RPF3R 0x164C
+#define RPF4R 0x1650
+#define RPF5R 0x1654
+#define RPF8R 0x1660
+#define RPF12R 0x1670
+#define RPF13R 0x1674
+#define RPG0R 0x1680
+#define RPG1R 0x1684
+#define RPG6R 0x1698
+#define RPG7R 0x169C
+#define RPG8R 0x16A0
+#define RPG9R 0x16A4
+
+static const struct
+{
+	int pin;
+	int reg;
+} output_pin_reg[] = {
+	{ OUT_RPD2, RPD2R },
+	{ OUT_RPG8, RPG8R },
+	{ OUT_RPF4, RPF4R },
+	{ OUT_RPD10, RPD10R },
+	{ OUT_RPF1, RPF1R },
+	{ OUT_RPB9, RPB9R },
+	{ OUT_RPB10, RPB10R },
+	{ OUT_RPC14, RPC14R },
+	{ OUT_RPB5, RPB5R },
+	{ OUT_RPC1, RPC1R },
+	{ OUT_RPD14, RPD14R },
+	{ OUT_RPG1, RPG1R },
+	{ OUT_RPA14, RPA14R },
+	{ OUT_RPD6, RPD6R },
+	{ OUT_RPD3, RPD3R },
+	{ OUT_RPG7, RPG7R },
+	{ OUT_RPF5, RPF5R },
+	{ OUT_RPD11, RPD11R },
+	{ OUT_RPF0, RPF0R },
+	{ OUT_RPB1, RPB1R },
+	{ OUT_RPE5, RPE5R },
+	{ OUT_RPC13, RPC13R },
+	{ OUT_RPB3, RPB3R },
+	{ OUT_RPC4, RPC4R },
+	{ OUT_RPD15, RPD15R },
+	{ OUT_RPG0, RPG0R },
+	{ OUT_RPA15, RPA15R },
+	{ OUT_RPD7, RPD7R },
+	{ OUT_RPD9, RPD9R },
+	{ OUT_RPG6, RPG6R },
+	{ OUT_RPB8, RPB8R },
+	{ OUT_RPB15, RPB15R },
+	{ OUT_RPD4, RPD4R },
+	{ OUT_RPB0, RPB0R },
+	{ OUT_RPE3, RPE3R },
+	{ OUT_RPB7, RPB7R },
+	{ OUT_RPF12, RPF12R },
+	{ OUT_RPD12, RPD12R },
+	{ OUT_RPF8, RPF8R },
+	{ OUT_RPC3, RPC3R },
+	{ OUT_RPE9, RPE9R },
+	{ OUT_RPD1, RPD1R },
+	{ OUT_RPG9, RPG9R },
+	{ OUT_RPB14, RPB14R },
+	{ OUT_RPD0, RPD0R },
+	{ OUT_RPB6, RPB6R },
+	{ OUT_RPD5, RPD5R },
+	{ OUT_RPB2, RPB2R },
+	{ OUT_RPF3, RPF3R },
+	{ OUT_RPF13, RPF13R },
+	{ OUT_RPC2, RPC2R },
+	{ OUT_RPE8, RPE8R },
+	{ OUT_RPF2, RPF2R },
+};
+
+void pic32_pps_output(int function, int pin)
+{
+	void __iomem *pps_base = ioremap_nocache(PPS_BASE, 0x170);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(output_pin_reg); i++) {
+		if (output_pin_reg[i].pin == pin) {
+			__raw_writel(function,
+				pps_base + output_pin_reg[i].reg);
+			return;
+		}
+	}
+
+	iounmap(pps_base);
+}