drivers/pinctrl/pinctrl_pic32.c - uboot-imx - Git at Google

 /*
  * Pinctrl driver for Microchip PIC32 SoCs
  * Copyright (c) 2015 Microchip Technology Inc.
  * Written by Purna Chandra Mandal <purna.mandal@microchip.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
 #include <asm/io.h>
 #include <dm/pinctrl.h>
 #include <mach/pic32.h>

 DECLARE_GLOBAL_DATA_PTR;

 /* PIC32 has 10 peripheral ports with 16 pins each.
  * Ports are marked PORTA-PORTK or PORT0-PORT9.
  */
 enum {
 	PIC32_PORT_A = 0,
 	PIC32_PORT_B = 1,
 	PIC32_PORT_C = 2,
 	PIC32_PORT_D = 3,
 	PIC32_PORT_E = 4,
 	PIC32_PORT_F = 5,
 	PIC32_PORT_G = 6,
 	PIC32_PORT_H = 7,
 	PIC32_PORT_J = 8, /* no PORT_I */
 	PIC32_PORT_K = 9,
 	PIC32_PINS_PER_PORT = 16,
 };

 #define PIN_CONFIG_PIC32_DIGITAL	(PIN_CONFIG_END + 1)
 #define PIN_CONFIG_PIC32_ANALOG		(PIN_CONFIG_END + 2)

 /* pin configuration descriptor */
 struct pic32_pin_config {
 	u16 port;	/* port number */
 	u16 pin;	/* pin number in the port */
 	u32 config;	/* one of PIN_CONFIG_* */
 };
 #define PIN_CONFIG(_prt, _pin, _cfg) \
 	{.port = (_prt), .pin = (_pin), .config = (_cfg), }

 /* In PIC32 muxing is performed at pin-level through two
  * different set of registers - one set for input functions,
  * and other for output functions.
  * Pin configuration is handled through port register.
  */
 /* Port control registers */
 struct pic32_reg_port {
 	struct pic32_reg_atomic ansel;
 	struct pic32_reg_atomic tris;
 	struct pic32_reg_atomic port;
 	struct pic32_reg_atomic lat;
 	struct pic32_reg_atomic odc;
 	struct pic32_reg_atomic cnpu;
 	struct pic32_reg_atomic cnpd;
 	struct pic32_reg_atomic cncon;
 	struct pic32_reg_atomic unused[8];
 };

 /* Input function mux registers */
 struct pic32_reg_in_mux {
 	u32 unused0;
 	u32 int1[4];
 	u32 unused1;
 	u32 t2ck[8];
 	u32 ic1[9];
 	u32 unused2;
 	u32 ocfar;
 	u32 unused3;
 	u32 u1rx;
 	u32 u1cts;
 	u32 u2rx;
 	u32 u2cts;
 	u32 u3rx;
 	u32 u3cts;
 	u32 u4rx;
 	u32 u4cts;
 	u32 u5rx;
 	u32 u5cts;
 	u32 u6rx;
 	u32 u6cts;
 	u32 unused4;
 	u32 sdi1;
 	u32 ss1;
 	u32 unused5;
 	u32 sdi2;
 	u32 ss2;
 	u32 unused6;
 	u32 sdi3;
 	u32 ss3;
 	u32 unused7;
 	u32 sdi4;
 	u32 ss4;
 	u32 unused8;
 	u32 sdi5;
 	u32 ss5;
 	u32 unused9;
 	u32 sdi6;
 	u32 ss6;
 	u32 c1rx;
 	u32 c2rx;
 	u32 refclki1;
 	u32 refclki2;
 	u32 refclki3;
 	u32 refclki4;
 };

 /* output mux register offset */
 #define PPS_OUT(__port, __pin) \
 	(((__port) * PIC32_PINS_PER_PORT + (__pin)) << 2)


 struct pic32_pinctrl_priv {
 	struct pic32_reg_in_mux *mux_in; /* mux input function */
 	struct pic32_reg_port *pinconf; /* pin configuration*/
 	void __iomem *mux_out;	/* mux output function */
 };

 enum {
 	PERIPH_ID_UART1,
 	PERIPH_ID_UART2,
 	PERIPH_ID_ETH,
 	PERIPH_ID_USB,
 	PERIPH_ID_SDHCI,
 	PERIPH_ID_I2C1,
 	PERIPH_ID_I2C2,
 	PERIPH_ID_SPI1,
 	PERIPH_ID_SPI2,
 	PERIPH_ID_SQI,
 };

 static int pic32_pinconfig_one(struct pic32_pinctrl_priv *priv,
 			       u32 port_nr, u32 pin, u32 param)
 {
 	struct pic32_reg_port *port;

 	port = &priv->pinconf[port_nr];
 	switch (param) {
 	case PIN_CONFIG_PIC32_DIGITAL:
 		writel(BIT(pin), &port->ansel.clr);
 		break;
 	case PIN_CONFIG_PIC32_ANALOG:
 		writel(BIT(pin), &port->ansel.set);
 		break;
 	case PIN_CONFIG_INPUT_ENABLE:
 		writel(BIT(pin), &port->tris.set);
 		break;
 	case PIN_CONFIG_OUTPUT:
 		writel(BIT(pin), &port->tris.clr);
 		break;
 	case PIN_CONFIG_BIAS_PULL_UP:
 		writel(BIT(pin), &port->cnpu.set);
 		break;
 	case PIN_CONFIG_BIAS_PULL_DOWN:
 		writel(BIT(pin), &port->cnpd.set);
 		break;
 	case PIN_CONFIG_DRIVE_OPEN_DRAIN:
 		writel(BIT(pin), &port->odc.set);
 		break;
 	default:
 		break;
 	}

 	return 0;
 }

 static int pic32_pinconfig_set(struct pic32_pinctrl_priv *priv,
 			       const struct pic32_pin_config *list, int count)
 {
 	int i;

 	for (i = 0 ; i < count; i++)
 		pic32_pinconfig_one(priv, list[i].port,
 				    list[i].pin, list[i].config);

 	return 0;
 }

 static void pic32_eth_pin_config(struct udevice *dev)
 {
 	struct pic32_pinctrl_priv *priv = dev_get_priv(dev);
 	const struct pic32_pin_config configs[] = {
 		/* EMDC - D11 */
 		PIN_CONFIG(PIC32_PORT_D, 11, PIN_CONFIG_PIC32_DIGITAL),
 		PIN_CONFIG(PIC32_PORT_D, 11, PIN_CONFIG_OUTPUT),
 		/* ETXEN */
 		PIN_CONFIG(PIC32_PORT_D, 6, PIN_CONFIG_PIC32_DIGITAL),
 		PIN_CONFIG(PIC32_PORT_D, 6, PIN_CONFIG_OUTPUT),
 		/* ECRSDV */
 		PIN_CONFIG(PIC32_PORT_H, 13, PIN_CONFIG_PIC32_DIGITAL),
 		PIN_CONFIG(PIC32_PORT_H, 13, PIN_CONFIG_INPUT_ENABLE),
 		/* ERXD0 */
 		PIN_CONFIG(PIC32_PORT_H, 8, PIN_CONFIG_PIC32_DIGITAL),
 		PIN_CONFIG(PIC32_PORT_H, 8, PIN_CONFIG_INPUT_ENABLE),
 		PIN_CONFIG(PIC32_PORT_H, 8, PIN_CONFIG_BIAS_PULL_DOWN),
 		/* ERXD1 */
 		PIN_CONFIG(PIC32_PORT_H, 5, PIN_CONFIG_PIC32_DIGITAL),
 		PIN_CONFIG(PIC32_PORT_H, 5, PIN_CONFIG_INPUT_ENABLE),
 		PIN_CONFIG(PIC32_PORT_H, 5, PIN_CONFIG_BIAS_PULL_DOWN),
 		/* EREFCLK */
 		PIN_CONFIG(PIC32_PORT_J, 11, PIN_CONFIG_PIC32_DIGITAL),
 		PIN_CONFIG(PIC32_PORT_J, 11, PIN_CONFIG_INPUT_ENABLE),
 		/* ETXD1 */
 		PIN_CONFIG(PIC32_PORT_J, 9, PIN_CONFIG_PIC32_DIGITAL),
 		PIN_CONFIG(PIC32_PORT_J, 9, PIN_CONFIG_OUTPUT),
 		/* ETXD0 */
 		PIN_CONFIG(PIC32_PORT_J, 8, PIN_CONFIG_PIC32_DIGITAL),
 		PIN_CONFIG(PIC32_PORT_J, 8, PIN_CONFIG_OUTPUT),
 		/* EMDIO */
 		PIN_CONFIG(PIC32_PORT_J, 1, PIN_CONFIG_PIC32_DIGITAL),
 		PIN_CONFIG(PIC32_PORT_J, 1, PIN_CONFIG_INPUT_ENABLE),
 		/* ERXERR */
 		PIN_CONFIG(PIC32_PORT_F, 3, PIN_CONFIG_PIC32_DIGITAL),
 		PIN_CONFIG(PIC32_PORT_F, 3, PIN_CONFIG_INPUT_ENABLE),
 	};

 	pic32_pinconfig_set(priv, configs, ARRAY_SIZE(configs));
 }

 static int pic32_pinctrl_request(struct udevice *dev, int func, int flags)
 {
 	struct pic32_pinctrl_priv *priv = dev_get_priv(dev);

 	switch (func) {
 	case PERIPH_ID_UART2:
 		/* PPS for U2 RX/TX */
 		writel(0x02, priv->mux_out + PPS_OUT(PIC32_PORT_G, 9));
 		writel(0x05, &priv->mux_in->u2rx); /* B0 */
 		/* set digital mode */
 		pic32_pinconfig_one(priv, PIC32_PORT_G, 9,
 				    PIN_CONFIG_PIC32_DIGITAL);
 		pic32_pinconfig_one(priv, PIC32_PORT_B, 0,
 				    PIN_CONFIG_PIC32_DIGITAL);
 		break;
 	case PERIPH_ID_ETH:
 		pic32_eth_pin_config(dev);
 		break;
 	default:
 		debug("%s: unknown-unhandled case\n", __func__);
 		break;
 	}

 	return 0;
 }

 static int pic32_pinctrl_get_periph_id(struct udevice *dev,
 				       struct udevice *periph)
 {
 	int ret;
 	u32 cell[2];

 	ret = fdtdec_get_int_array(gd->fdt_blob, dev_of_offset(periph),
 				   "interrupts", cell, ARRAY_SIZE(cell));
 	if (ret < 0)
 		return -EINVAL;

 	/* interrupt number */
 	switch (cell[0]) {
 	case 112 ... 114:
 		return PERIPH_ID_UART1;
 	case 145 ... 147:
 		return PERIPH_ID_UART2;
 	case 109 ... 111:
 		return PERIPH_ID_SPI1;
 	case 142 ... 144:
 		return PERIPH_ID_SPI2;
 	case 115 ... 117:
 		return PERIPH_ID_I2C1;
 	case 148 ... 150:
 		return PERIPH_ID_I2C2;
 	case 132 ... 133:
 		return PERIPH_ID_USB;
 	case 169:
 		return PERIPH_ID_SQI;
 	case 191:
 		return PERIPH_ID_SDHCI;
 	case 153:
 		return PERIPH_ID_ETH;
 	default:
 		break;
 	}

 	return -ENOENT;
 }

 static int pic32_pinctrl_set_state_simple(struct udevice *dev,
 					  struct udevice *periph)
 {
 	int func;

 	debug("%s: periph %s\n", __func__, periph->name);
 	func = pic32_pinctrl_get_periph_id(dev, periph);
 	if (func < 0)
 		return func;
 	return pic32_pinctrl_request(dev, func, 0);
 }

 static struct pinctrl_ops pic32_pinctrl_ops = {
 	.set_state_simple	= pic32_pinctrl_set_state_simple,
 	.request		= pic32_pinctrl_request,
 	.get_periph_id		= pic32_pinctrl_get_periph_id,
 };

 static int pic32_pinctrl_probe(struct udevice *dev)
 {
 	struct pic32_pinctrl_priv *priv = dev_get_priv(dev);
 	struct fdt_resource res;
 	void *fdt = (void *)gd->fdt_blob;
 	int node = dev_of_offset(dev);
 	int ret;

 	ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
 				     "ppsin", &res);
 	if (ret < 0) {
 		printf("pinctrl: resource \"ppsin\" not found\n");
 		return ret;
 	}
 	priv->mux_in = ioremap(res.start, fdt_resource_size(&res));

 	ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
 				     "ppsout", &res);
 	if (ret < 0) {
 		printf("pinctrl: resource \"ppsout\" not found\n");
 		return ret;
 	}
 	priv->mux_out = ioremap(res.start, fdt_resource_size(&res));

 	ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
 				     "port", &res);
 	if (ret < 0) {
 		printf("pinctrl: resource \"port\" not found\n");
 		return ret;
 	}
 	priv->pinconf = ioremap(res.start, fdt_resource_size(&res));

 	return 0;
 }

 static const struct udevice_id pic32_pinctrl_ids[] = {
 	{ .compatible = "microchip,pic32mzda-pinctrl" },
 	{ }
 };

 U_BOOT_DRIVER(pinctrl_pic32) = {
 	.name		= "pinctrl_pic32",
 	.id		= UCLASS_PINCTRL,
 	.of_match	= pic32_pinctrl_ids,
 	.ops		= &pic32_pinctrl_ops,
 	.probe		= pic32_pinctrl_probe,
 	.bind		= dm_scan_fdt_dev,
 	.priv_auto_alloc_size = sizeof(struct pic32_pinctrl_priv),
 };
	/*
	* Pinctrl driver for Microchip PIC32 SoCs
	* Copyright (c) 2015 Microchip Technology Inc.
	* Written by Purna Chandra Mandal <purna.mandal@microchip.com>
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/
	#include <common.h>
	#include <dm.h>
	#include <errno.h>
	#include <asm/io.h>
	#include <dm/pinctrl.h>
	#include <mach/pic32.h>

	DECLARE_GLOBAL_DATA_PTR;

	/* PIC32 has 10 peripheral ports with 16 pins each.
	* Ports are marked PORTA-PORTK or PORT0-PORT9.
	*/
	enum {
	PIC32_PORT_A = 0,
	PIC32_PORT_B = 1,
	PIC32_PORT_C = 2,
	PIC32_PORT_D = 3,
	PIC32_PORT_E = 4,
	PIC32_PORT_F = 5,
	PIC32_PORT_G = 6,
	PIC32_PORT_H = 7,
	PIC32_PORT_J = 8, /* no PORT_I */
	PIC32_PORT_K = 9,
	PIC32_PINS_PER_PORT = 16,
	};

	#define PIN_CONFIG_PIC32_DIGITAL (PIN_CONFIG_END + 1)
	#define PIN_CONFIG_PIC32_ANALOG (PIN_CONFIG_END + 2)

	/* pin configuration descriptor */
	struct pic32_pin_config {
	u16 port; /* port number */
	u16 pin; /* pin number in the port */
	u32 config; /* one of PIN_CONFIG_* */
	};
	#define PIN_CONFIG(_prt, _pin, _cfg) \
	{.port = (_prt), .pin = (_pin), .config = (_cfg), }

	/* In PIC32 muxing is performed at pin-level through two
	* different set of registers - one set for input functions,
	* and other for output functions.
	* Pin configuration is handled through port register.
	*/
	/* Port control registers */
	struct pic32_reg_port {
	struct pic32_reg_atomic ansel;
	struct pic32_reg_atomic tris;
	struct pic32_reg_atomic port;
	struct pic32_reg_atomic lat;
	struct pic32_reg_atomic odc;
	struct pic32_reg_atomic cnpu;
	struct pic32_reg_atomic cnpd;
	struct pic32_reg_atomic cncon;
	struct pic32_reg_atomic unused[8];
	};

	/* Input function mux registers */
	struct pic32_reg_in_mux {
	u32 unused0;
	u32 int1[4];
	u32 unused1;
	u32 t2ck[8];
	u32 ic1[9];
	u32 unused2;
	u32 ocfar;
	u32 unused3;
	u32 u1rx;
	u32 u1cts;
	u32 u2rx;
	u32 u2cts;
	u32 u3rx;
	u32 u3cts;
	u32 u4rx;
	u32 u4cts;
	u32 u5rx;
	u32 u5cts;
	u32 u6rx;
	u32 u6cts;
	u32 unused4;
	u32 sdi1;
	u32 ss1;
	u32 unused5;
	u32 sdi2;
	u32 ss2;
	u32 unused6;
	u32 sdi3;
	u32 ss3;
	u32 unused7;
	u32 sdi4;
	u32 ss4;
	u32 unused8;
	u32 sdi5;
	u32 ss5;
	u32 unused9;
	u32 sdi6;
	u32 ss6;
	u32 c1rx;
	u32 c2rx;
	u32 refclki1;
	u32 refclki2;
	u32 refclki3;
	u32 refclki4;
	};

	/* output mux register offset */
	#define PPS_OUT(__port, __pin) \
	(((__port) * PIC32_PINS_PER_PORT + (__pin)) << 2)


	struct pic32_pinctrl_priv {
	struct pic32_reg_in_mux mux_in; / mux input function */
	struct pic32_reg_port pinconf; / pin configuration*/
	void __iomem mux_out; / mux output function */
	};

	enum {
	PERIPH_ID_UART1,
	PERIPH_ID_UART2,
	PERIPH_ID_ETH,
	PERIPH_ID_USB,
	PERIPH_ID_SDHCI,
	PERIPH_ID_I2C1,
	PERIPH_ID_I2C2,
	PERIPH_ID_SPI1,
	PERIPH_ID_SPI2,
	PERIPH_ID_SQI,
	};

	static int pic32_pinconfig_one(struct pic32_pinctrl_priv *priv,
	u32 port_nr, u32 pin, u32 param)
	{
	struct pic32_reg_port *port;

	port = &priv->pinconf[port_nr];
	switch (param) {
	case PIN_CONFIG_PIC32_DIGITAL:
	writel(BIT(pin), &port->ansel.clr);
	break;
	case PIN_CONFIG_PIC32_ANALOG:
	writel(BIT(pin), &port->ansel.set);
	break;
	case PIN_CONFIG_INPUT_ENABLE:
	writel(BIT(pin), &port->tris.set);
	break;
	case PIN_CONFIG_OUTPUT:
	writel(BIT(pin), &port->tris.clr);
	break;
	case PIN_CONFIG_BIAS_PULL_UP:
	writel(BIT(pin), &port->cnpu.set);
	break;
	case PIN_CONFIG_BIAS_PULL_DOWN:
	writel(BIT(pin), &port->cnpd.set);
	break;
	case PIN_CONFIG_DRIVE_OPEN_DRAIN:
	writel(BIT(pin), &port->odc.set);
	break;
	default:
	break;
	}

	return 0;
	}

	static int pic32_pinconfig_set(struct pic32_pinctrl_priv *priv,
	const struct pic32_pin_config *list, int count)
	{
	int i;

	for (i = 0 ; i < count; i++)
	pic32_pinconfig_one(priv, list[i].port,
	list[i].pin, list[i].config);

	return 0;
	}

	static void pic32_eth_pin_config(struct udevice *dev)
	{
	struct pic32_pinctrl_priv *priv = dev_get_priv(dev);
	const struct pic32_pin_config configs[] = {
	/* EMDC - D11 */
	PIN_CONFIG(PIC32_PORT_D, 11, PIN_CONFIG_PIC32_DIGITAL),
	PIN_CONFIG(PIC32_PORT_D, 11, PIN_CONFIG_OUTPUT),
	/* ETXEN */
	PIN_CONFIG(PIC32_PORT_D, 6, PIN_CONFIG_PIC32_DIGITAL),
	PIN_CONFIG(PIC32_PORT_D, 6, PIN_CONFIG_OUTPUT),
	/* ECRSDV */
	PIN_CONFIG(PIC32_PORT_H, 13, PIN_CONFIG_PIC32_DIGITAL),
	PIN_CONFIG(PIC32_PORT_H, 13, PIN_CONFIG_INPUT_ENABLE),
	/* ERXD0 */
	PIN_CONFIG(PIC32_PORT_H, 8, PIN_CONFIG_PIC32_DIGITAL),
	PIN_CONFIG(PIC32_PORT_H, 8, PIN_CONFIG_INPUT_ENABLE),
	PIN_CONFIG(PIC32_PORT_H, 8, PIN_CONFIG_BIAS_PULL_DOWN),
	/* ERXD1 */
	PIN_CONFIG(PIC32_PORT_H, 5, PIN_CONFIG_PIC32_DIGITAL),
	PIN_CONFIG(PIC32_PORT_H, 5, PIN_CONFIG_INPUT_ENABLE),
	PIN_CONFIG(PIC32_PORT_H, 5, PIN_CONFIG_BIAS_PULL_DOWN),
	/* EREFCLK */
	PIN_CONFIG(PIC32_PORT_J, 11, PIN_CONFIG_PIC32_DIGITAL),
	PIN_CONFIG(PIC32_PORT_J, 11, PIN_CONFIG_INPUT_ENABLE),
	/* ETXD1 */
	PIN_CONFIG(PIC32_PORT_J, 9, PIN_CONFIG_PIC32_DIGITAL),
	PIN_CONFIG(PIC32_PORT_J, 9, PIN_CONFIG_OUTPUT),
	/* ETXD0 */
	PIN_CONFIG(PIC32_PORT_J, 8, PIN_CONFIG_PIC32_DIGITAL),
	PIN_CONFIG(PIC32_PORT_J, 8, PIN_CONFIG_OUTPUT),
	/* EMDIO */
	PIN_CONFIG(PIC32_PORT_J, 1, PIN_CONFIG_PIC32_DIGITAL),
	PIN_CONFIG(PIC32_PORT_J, 1, PIN_CONFIG_INPUT_ENABLE),
	/* ERXERR */
	PIN_CONFIG(PIC32_PORT_F, 3, PIN_CONFIG_PIC32_DIGITAL),
	PIN_CONFIG(PIC32_PORT_F, 3, PIN_CONFIG_INPUT_ENABLE),
	};

	pic32_pinconfig_set(priv, configs, ARRAY_SIZE(configs));
	}

	static int pic32_pinctrl_request(struct udevice *dev, int func, int flags)
	{
	struct pic32_pinctrl_priv *priv = dev_get_priv(dev);

	switch (func) {
	case PERIPH_ID_UART2:
	/* PPS for U2 RX/TX */
	writel(0x02, priv->mux_out + PPS_OUT(PIC32_PORT_G, 9));
	writel(0x05, &priv->mux_in->u2rx); /* B0 */
	/* set digital mode */
	pic32_pinconfig_one(priv, PIC32_PORT_G, 9,
	PIN_CONFIG_PIC32_DIGITAL);
	pic32_pinconfig_one(priv, PIC32_PORT_B, 0,
	PIN_CONFIG_PIC32_DIGITAL);
	break;
	case PERIPH_ID_ETH:
	pic32_eth_pin_config(dev);
	break;
	default:
	debug("%s: unknown-unhandled case\n", __func__);
	break;
	}

	return 0;
	}

	static int pic32_pinctrl_get_periph_id(struct udevice *dev,
	struct udevice *periph)
	{
	int ret;
	u32 cell[2];

	ret = fdtdec_get_int_array(gd->fdt_blob, dev_of_offset(periph),
	"interrupts", cell, ARRAY_SIZE(cell));
	if (ret < 0)
	return -EINVAL;

	/* interrupt number */
	switch (cell[0]) {
	case 112 ... 114:
	return PERIPH_ID_UART1;
	case 145 ... 147:
	return PERIPH_ID_UART2;
	case 109 ... 111:
	return PERIPH_ID_SPI1;
	case 142 ... 144:
	return PERIPH_ID_SPI2;
	case 115 ... 117:
	return PERIPH_ID_I2C1;
	case 148 ... 150:
	return PERIPH_ID_I2C2;
	case 132 ... 133:
	return PERIPH_ID_USB;
	case 169:
	return PERIPH_ID_SQI;
	case 191:
	return PERIPH_ID_SDHCI;
	case 153:
	return PERIPH_ID_ETH;
	default:
	break;
	}

	return -ENOENT;
	}

	static int pic32_pinctrl_set_state_simple(struct udevice *dev,
	struct udevice *periph)
	{
	int func;

	debug("%s: periph %s\n", __func__, periph->name);
	func = pic32_pinctrl_get_periph_id(dev, periph);
	if (func < 0)
	return func;
	return pic32_pinctrl_request(dev, func, 0);
	}

	static struct pinctrl_ops pic32_pinctrl_ops = {
	.set_state_simple = pic32_pinctrl_set_state_simple,
	.request = pic32_pinctrl_request,
	.get_periph_id = pic32_pinctrl_get_periph_id,
	};

	static int pic32_pinctrl_probe(struct udevice *dev)
	{
	struct pic32_pinctrl_priv *priv = dev_get_priv(dev);
	struct fdt_resource res;
	void fdt = (void )gd->fdt_blob;
	int node = dev_of_offset(dev);
	int ret;

	ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
	"ppsin", &res);
	if (ret < 0) {
	printf("pinctrl: resource \"ppsin\" not found\n");
	return ret;
	}
	priv->mux_in = ioremap(res.start, fdt_resource_size(&res));

	ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
	"ppsout", &res);
	if (ret < 0) {
	printf("pinctrl: resource \"ppsout\" not found\n");
	return ret;
	}
	priv->mux_out = ioremap(res.start, fdt_resource_size(&res));

	ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
	"port", &res);
	if (ret < 0) {
	printf("pinctrl: resource \"port\" not found\n");
	return ret;
	}
	priv->pinconf = ioremap(res.start, fdt_resource_size(&res));

	return 0;
	}

	static const struct udevice_id pic32_pinctrl_ids[] = {
	{ .compatible = "microchip,pic32mzda-pinctrl" },
	{ }
	};

	U_BOOT_DRIVER(pinctrl_pic32) = {
	.name = "pinctrl_pic32",
	.id = UCLASS_PINCTRL,
	.of_match = pic32_pinctrl_ids,
	.ops = &pic32_pinctrl_ops,
	.probe = pic32_pinctrl_probe,
	.bind = dm_scan_fdt_dev,
	.priv_auto_alloc_size = sizeof(struct pic32_pinctrl_priv),
	};