pinctrl: pinctrl-pic32: Add PIC32 pin control driver

Add a driver for the pin controller present on the Microchip PIC32
including the specific variant PIC32MZDA. This driver provides pinmux
and pinconfig operations as well as GPIO and IRQ chips for the GPIO
banks.

Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/Kconfig

@@ -207,6 +207,23 @@ config PINCTRL_PALMAS
 	  open drain configuration for the Palmas series devices like
 	  TPS65913, TPS80036 etc.
 
+config PINCTRL_PIC32
+	bool "Microchip PIC32 pin controller driver"
+	depends on OF
+	depends on MACH_PIC32
+	select PINMUX
+	select GENERIC_PINCONF
+	select GPIOLIB_IRQCHIP
+	select OF_GPIO
+	help
+	  This is the pin controller and gpio driver for Microchip PIC32
+	  microcontrollers. This option is selected automatically when specific
+	  machine and arch are selected to build.
+
+config PINCTRL_PIC32MZDA
+	def_bool y if PIC32MZDA
+	select PINCTRL_PIC32
+
 config PINCTRL_ZYNQ
 	bool "Pinctrl driver for Xilinx Zynq"
 	depends on ARCH_ZYNQ

drivers/pinctrl/Makefile

@@ -18,6 +18,7 @@ obj-$(CONFIG_PINCTRL_DIGICOLOR)	+= pinctrl-digicolor.o
 obj-$(CONFIG_PINCTRL_FALCON)	+= pinctrl-falcon.o
 obj-$(CONFIG_PINCTRL_MESON)	+= meson/
 obj-$(CONFIG_PINCTRL_PALMAS)	+= pinctrl-palmas.o
+obj-$(CONFIG_PINCTRL_PIC32)	+= pinctrl-pic32.o
 obj-$(CONFIG_PINCTRL_PISTACHIO)	+= pinctrl-pistachio.o
 obj-$(CONFIG_PINCTRL_ROCKCHIP)	+= pinctrl-rockchip.o
 obj-$(CONFIG_PINCTRL_SINGLE)	+= pinctrl-single.o

drivers/pinctrl/pinctrl-pic32.h

@@ -0,0 +1,141 @@
+/*
+ * PIC32 pinctrl driver
+ *
+ * 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.
+ */
+#ifndef PINCTRL_PINCTRL_PIC32_H
+#define PINCTRL_PINCTRL_PIC32_H
+
+/* PORT Registers */
+#define ANSEL_REG	0x00
+#define TRIS_REG	0x10
+#define PORT_REG	0x20
+#define LAT_REG		0x30
+#define ODCU_REG	0x40
+#define CNPU_REG	0x50
+#define CNPD_REG	0x60
+#define CNCON_REG	0x70
+#define CNEN_REG	0x80
+#define CNSTAT_REG	0x90
+#define CNNE_REG	0xA0
+#define CNF_REG		0xB0
+
+/* Input PPS Registers */
+#define INT1R 0x04
+#define INT2R 0x08
+#define INT3R 0x0C
+#define INT4R 0x10
+#define T2CKR 0x18
+#define T3CKR 0x1C
+#define T4CKR 0x20
+#define T5CKR 0x24
+#define T6CKR 0x28
+#define T7CKR 0x2C
+#define T8CKR 0x30
+#define T9CKR 0x34
+#define IC1R 0x38
+#define IC2R 0x3C
+#define IC3R 0x40
+#define IC4R 0x44
+#define IC5R 0x48
+#define IC6R 0x4C
+#define IC7R 0x50
+#define IC8R 0x54
+#define IC9R 0x58
+#define OCFAR 0x60
+#define U1RXR 0x68
+#define U1CTSR 0x6C
+#define U2RXR 0x70
+#define U2CTSR 0x74
+#define U3RXR 0x78
+#define U3CTSR 0x7C
+#define U4RXR 0x80
+#define U4CTSR 0x84
+#define U5RXR 0x88
+#define U5CTSR 0x8C
+#define U6RXR 0x90
+#define U6CTSR 0x94
+#define SDI1R 0x9C
+#define SS1INR 0xA0
+#define SDI2R 0xA8
+#define SS2INR 0xAC
+#define SDI3R 0xB4
+#define SS3INR 0xB8
+#define SDI4R 0xC0
+#define SS4INR 0xC4
+#define SDI5R 0xCC
+#define SS5INR 0xD0
+#define SDI6R 0xD8
+#define SS6INR 0xDC
+#define C1RXR 0xE0
+#define C2RXR 0xE4
+#define REFCLKI1R 0xE8
+#define REFCLKI3R 0xF0
+#define REFCLKI4R 0xF4
+
+/* Output PPS Registers */
+#define RPA14R 0x138
+#define RPA15R 0x13C
+#define RPB0R 0x140
+#define RPB1R 0x144
+#define RPB2R 0x148
+#define RPB3R 0x14C
+#define RPB5R 0x154
+#define RPB6R 0x158
+#define RPB7R 0x15C
+#define RPB8R 0x160
+#define RPB9R 0x164
+#define RPB10R 0x168
+#define RPB14R 0x178
+#define RPB15R 0x17C
+#define RPC1R 0x184
+#define RPC2R 0x188
+#define RPC3R 0x18C
+#define RPC4R 0x190
+#define RPC13R 0x1B4
+#define RPC14R 0x1B8
+#define RPD0R 0x1C0
+#define RPD1R 0x1C4
+#define RPD2R 0x1C8
+#define RPD3R 0x1CC
+#define RPD4R 0x1D0
+#define RPD5R 0x1D4
+#define RPD6R 0x1D8
+#define RPD7R 0x1DC
+#define RPD9R 0x1E4
+#define RPD10R 0x1E8
+#define RPD11R 0x1EC
+#define RPD12R 0x1F0
+#define RPD14R 0x1F8
+#define RPD15R 0x1FC
+#define RPE3R 0x20C
+#define RPE5R 0x214
+#define RPE8R 0x220
+#define RPE9R 0x224
+#define RPF0R 0x240
+#define RPF1R 0x244
+#define RPF2R 0x248
+#define RPF3R 0x24C
+#define RPF4R 0x250
+#define RPF5R 0x254
+#define RPF8R 0x260
+#define RPF12R 0x270
+#define RPF13R 0x274
+#define RPG0R 0x280
+#define RPG1R 0x284
+#define RPG6R 0x298
+#define RPG7R 0x29C
+#define RPG8R 0x2A0
+#define RPG9R 0x2A4
+
+#endif  /* PINCTRL_PINCTRL_PIC32_H */