Orange Pi5 kernel

 // SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2018 Rafał Miłecki <rafal@milecki.pl>
 */
 
#include <linux/err.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
 
#define FLAG_BCM4708		BIT(1)
#define FLAG_BCM4709		BIT(2)
#define FLAG_BCM53012		BIT(3)
 
struct ns_pinctrl {
<------>struct device *dev;
<------>unsigned int chipset_flag;
<------>struct pinctrl_dev *pctldev;
<------>void __iomem *base;
 
<------>struct pinctrl_desc pctldesc;
<------>struct ns_pinctrl_group *groups;
<------>unsigned int num_groups;
<------>struct ns_pinctrl_function *functions;
<------>unsigned int num_functions;
};
 
/*
 * Pins
 */
 
static const struct pinctrl_pin_desc ns_pinctrl_pins[] = {
<------>{ 0, "spi_clk", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 1, "spi_ss", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 2, "spi_mosi", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 3, "spi_miso", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 4, "i2c_scl", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 5, "i2c_sda", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 6, "mdc", (void *)(FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 7, "mdio", (void *)(FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 8, "pwm0", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 9, "pwm1", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 10, "pwm2", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 11, "pwm3", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 12, "uart1_rx", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 13, "uart1_tx", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 14, "uart1_cts", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 15, "uart1_rts", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 16, "uart2_rx", (void *)(FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 17, "uart2_tx", (void *)(FLAG_BCM4709 | FLAG_BCM53012) },
/* TODO { ??, "xtal_out", (void *)(FLAG_BCM4709) }, */
<------>{ 22, "sdio_pwr", (void *)(FLAG_BCM4709 | FLAG_BCM53012) },
<------>{ 23, "sdio_en_1p8v", (void *)(FLAG_BCM4709 | FLAG_BCM53012) },
};
 
/*
 * Groups
 */
 
struct ns_pinctrl_group {
<------>const char *name;
<------>const unsigned int *pins;
<------>const unsigned int num_pins;
<------>unsigned int chipsets;
};
 
static const unsigned int spi_pins[] = { 0, 1, 2, 3 };
static const unsigned int i2c_pins[] = { 4, 5 };
static const unsigned int mdio_pins[] = { 6, 7 };
static const unsigned int pwm0_pins[] = { 8 };
static const unsigned int pwm1_pins[] = { 9 };
static const unsigned int pwm2_pins[] = { 10 };
static const unsigned int pwm3_pins[] = { 11 };
static const unsigned int uart1_pins[] = { 12, 13, 14, 15 };
static const unsigned int uart2_pins[] = { 16, 17 };
static const unsigned int sdio_pwr_pins[] = { 22 };
static const unsigned int sdio_1p8v_pins[] = { 23 };
 
#define NS_GROUP(_name, _pins, _chipsets)		\
{							\
<------>.name = _name,					\
<------>.pins = _pins,					\
<------>.num_pins = ARRAY_SIZE(_pins),			\
<------>.chipsets = _chipsets,				\
}
 
static const struct ns_pinctrl_group ns_pinctrl_groups[] = {
<------>NS_GROUP("spi_grp", spi_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_GROUP("i2c_grp", i2c_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_GROUP("mdio_grp", mdio_pins, FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_GROUP("pwm0_grp", pwm0_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_GROUP("pwm1_grp", pwm1_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_GROUP("pwm2_grp", pwm2_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_GROUP("pwm3_grp", pwm3_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_GROUP("uart1_grp", uart1_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_GROUP("uart2_grp", uart2_pins, FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_GROUP("sdio_pwr_grp", sdio_pwr_pins, FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_GROUP("sdio_1p8v_grp", sdio_1p8v_pins, FLAG_BCM4709 | FLAG_BCM53012),
};
 
/*
 * Functions
 */
 
struct ns_pinctrl_function {
<------>const char *name;
<------>const char * const *groups;
<------>const unsigned int num_groups;
<------>unsigned int chipsets;
};
 
static const char * const spi_groups[] = { "spi_grp" };
static const char * const i2c_groups[] = { "i2c_grp" };
static const char * const mdio_groups[] = { "mdio_grp" };
static const char * const pwm_groups[] = { "pwm0_grp", "pwm1_grp", "pwm2_grp",
<------><------><------><------><------>   "pwm3_grp" };
static const char * const uart1_groups[] = { "uart1_grp" };
static const char * const uart2_groups[] = { "uart2_grp" };
static const char * const sdio_groups[] = { "sdio_pwr_grp", "sdio_1p8v_grp" };
 
#define NS_FUNCTION(_name, _groups, _chipsets)		\
{							\
<------>.name = _name,					\
<------>.groups = _groups,				\
<------>.num_groups = ARRAY_SIZE(_groups),		\
<------>.chipsets = _chipsets,				\
}
 
static const struct ns_pinctrl_function ns_pinctrl_functions[] = {
<------>NS_FUNCTION("spi", spi_groups, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_FUNCTION("i2c", i2c_groups, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_FUNCTION("mdio", mdio_groups, FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_FUNCTION("pwm", pwm_groups, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_FUNCTION("uart1", uart1_groups, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_FUNCTION("uart2", uart2_groups, FLAG_BCM4709 | FLAG_BCM53012),
<------>NS_FUNCTION("sdio", sdio_groups, FLAG_BCM4709 | FLAG_BCM53012),
};
 
/*
 * Groups code
 */
 
static int ns_pinctrl_get_groups_count(struct pinctrl_dev *pctrl_dev)
{
<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
 
<------>return ns_pinctrl->num_groups;
}
 
static const char *ns_pinctrl_get_group_name(struct pinctrl_dev *pctrl_dev,
<------><------><------><------><------>     unsigned int selector)
{
<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
 
<------>return ns_pinctrl->groups[selector].name;
}
 
static int ns_pinctrl_get_group_pins(struct pinctrl_dev *pctrl_dev,
<------><------><------><------>     unsigned int selector,
<------><------><------><------>     const unsigned int **pins,
<------><------><------><------>     unsigned int *num_pins)
{
<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
 
<------>*pins = ns_pinctrl->groups[selector].pins;
<------>*num_pins = ns_pinctrl->groups[selector].num_pins;
 
<------>return 0;
}
 
static const struct pinctrl_ops ns_pinctrl_ops = {
<------>.get_groups_count = ns_pinctrl_get_groups_count,
<------>.get_group_name = ns_pinctrl_get_group_name,
<------>.get_group_pins = ns_pinctrl_get_group_pins,
<------>.dt_node_to_map = pinconf_generic_dt_node_to_map_group,
<------>.dt_free_map = pinconf_generic_dt_free_map,
};
 
/*
 * Functions code
 */
 
static int ns_pinctrl_get_functions_count(struct pinctrl_dev *pctrl_dev)
{
<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
 
<------>return ns_pinctrl->num_functions;
}
 
static const char *ns_pinctrl_get_function_name(struct pinctrl_dev *pctrl_dev,
<------><------><------><------><------><------>unsigned int selector)
{
<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
 
<------>return ns_pinctrl->functions[selector].name;
}
 
static int ns_pinctrl_get_function_groups(struct pinctrl_dev *pctrl_dev,
<------><------><------><------><------>  unsigned int selector,
<------><------><------><------><------>  const char * const **groups,
<------><------><------><------><------>  unsigned * const num_groups)
{
<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
 
<------>*groups = ns_pinctrl->functions[selector].groups;
<------>*num_groups = ns_pinctrl->functions[selector].num_groups;
 
<------>return 0;
}
 
static int ns_pinctrl_set_mux(struct pinctrl_dev *pctrl_dev,
<------><------><------>      unsigned int func_select,
<------><------><------>      unsigned int grp_select)
{
<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
<------>u32 unset = 0;
<------>u32 tmp;
<------>int i;
 
<------>for (i = 0; i < ns_pinctrl->groups[grp_select].num_pins; i++) {
<------><------>int pin_number = ns_pinctrl->groups[grp_select].pins[i];
 
<------><------>unset |= BIT(pin_number);
<------>}
 
<------>tmp = readl(ns_pinctrl->base);
<------>tmp &= ~unset;
<------>writel(tmp, ns_pinctrl->base);
 
<------>return 0;
}
 
static const struct pinmux_ops ns_pinctrl_pmxops = {
<------>.get_functions_count = ns_pinctrl_get_functions_count,
<------>.get_function_name = ns_pinctrl_get_function_name,
<------>.get_function_groups = ns_pinctrl_get_function_groups,
<------>.set_mux = ns_pinctrl_set_mux,
};
 
/*
 * Controller code
 */
 
static struct pinctrl_desc ns_pinctrl_desc = {
<------>.name = "pinctrl-ns",
<------>.pctlops = &ns_pinctrl_ops,
<------>.pmxops = &ns_pinctrl_pmxops,
};
 
static const struct of_device_id ns_pinctrl_of_match_table[] = {
<------>{ .compatible = "brcm,bcm4708-pinmux", .data = (void *)FLAG_BCM4708, },
<------>{ .compatible = "brcm,bcm4709-pinmux", .data = (void *)FLAG_BCM4709, },
<------>{ .compatible = "brcm,bcm53012-pinmux", .data = (void *)FLAG_BCM53012, },
<------>{ }
};
 
static int ns_pinctrl_probe(struct platform_device *pdev)
{
<------>struct device *dev = &pdev->dev;
<------>const struct of_device_id *of_id;
<------>struct ns_pinctrl *ns_pinctrl;
<------>struct pinctrl_desc *pctldesc;
<------>struct pinctrl_pin_desc *pin;
<------>struct ns_pinctrl_group *group;
<------>struct ns_pinctrl_function *function;
<------>struct resource *res;
<------>int i;
 
<------>ns_pinctrl = devm_kzalloc(dev, sizeof(*ns_pinctrl), GFP_KERNEL);
<------>if (!ns_pinctrl)
<------><------>return -ENOMEM;
<------>pctldesc = &ns_pinctrl->pctldesc;
<------>platform_set_drvdata(pdev, ns_pinctrl);
 
<------>/* Set basic properties */
 
<------>ns_pinctrl->dev = dev;
 
<------>of_id = of_match_device(ns_pinctrl_of_match_table, dev);
<------>if (!of_id)
<------><------>return -EINVAL;
<------>ns_pinctrl->chipset_flag = (uintptr_t)of_id->data;
 
<------>res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
<------><------><------><------><------>   "cru_gpio_control");
<------>ns_pinctrl->base = devm_ioremap_resource(dev, res);
<------>if (IS_ERR(ns_pinctrl->base)) {
<------><------>dev_err(dev, "Failed to map pinctrl regs\n");
<------><------>return PTR_ERR(ns_pinctrl->base);
<------>}
 
<------>memcpy(pctldesc, &ns_pinctrl_desc, sizeof(*pctldesc));
 
<------>/* Set pinctrl properties */
 
<------>pctldesc->pins = devm_kcalloc(dev, ARRAY_SIZE(ns_pinctrl_pins),
<------><------><------><------>      sizeof(struct pinctrl_pin_desc),
<------><------><------><------>      GFP_KERNEL);
<------>if (!pctldesc->pins)
<------><------>return -ENOMEM;
<------>for (i = 0, pin = (struct pinctrl_pin_desc *)&pctldesc->pins[0];
<------>     i < ARRAY_SIZE(ns_pinctrl_pins); i++) {
<------><------>const struct pinctrl_pin_desc *src = &ns_pinctrl_pins[i];
<------><------>unsigned int chipsets = (uintptr_t)src->drv_data;
 
<------><------>if (chipsets & ns_pinctrl->chipset_flag) {
<------><------><------>memcpy(pin++, src, sizeof(*src));
<------><------><------>pctldesc->npins++;
<------><------>}
<------>}
 
<------>ns_pinctrl->groups = devm_kcalloc(dev, ARRAY_SIZE(ns_pinctrl_groups),
<------><------><------><------><------>  sizeof(struct ns_pinctrl_group),
<------><------><------><------><------>  GFP_KERNEL);
<------>if (!ns_pinctrl->groups)
<------><------>return -ENOMEM;
<------>for (i = 0, group = &ns_pinctrl->groups[0];
<------>     i < ARRAY_SIZE(ns_pinctrl_groups); i++) {
<------><------>const struct ns_pinctrl_group *src = &ns_pinctrl_groups[i];
 
<------><------>if (src->chipsets & ns_pinctrl->chipset_flag) {
<------><------><------>memcpy(group++, src, sizeof(*src));
<------><------><------>ns_pinctrl->num_groups++;
<------><------>}
<------>}
 
<------>ns_pinctrl->functions = devm_kcalloc(dev,
<------><------><------><------><------>     ARRAY_SIZE(ns_pinctrl_functions),
<------><------><------><------><------>     sizeof(struct ns_pinctrl_function),
<------><------><------><------><------>     GFP_KERNEL);
<------>if (!ns_pinctrl->functions)
<------><------>return -ENOMEM;
<------>for (i = 0, function = &ns_pinctrl->functions[0];
<------>     i < ARRAY_SIZE(ns_pinctrl_functions); i++) {
<------><------>const struct ns_pinctrl_function *src = &ns_pinctrl_functions[i];
 
<------><------>if (src->chipsets & ns_pinctrl->chipset_flag) {
<------><------><------>memcpy(function++, src, sizeof(*src));
<------><------><------>ns_pinctrl->num_functions++;
<------><------>}
<------>}
 
<------>/* Register */
 
<------>ns_pinctrl->pctldev = devm_pinctrl_register(dev, pctldesc, ns_pinctrl);
<------>if (IS_ERR(ns_pinctrl->pctldev)) {
<------><------>dev_err(dev, "Failed to register pinctrl\n");
<------><------>return PTR_ERR(ns_pinctrl->pctldev);
<------>}
 
<------>return 0;
}
 
static struct platform_driver ns_pinctrl_driver = {
<------>.probe = ns_pinctrl_probe,
<------>.driver = {
<------><------>.name = "ns-pinmux",
<------><------>.of_match_table = ns_pinctrl_of_match_table,
<------>},
};
 
module_platform_driver(ns_pinctrl_driver);
 
MODULE_AUTHOR("Rafał Miłecki");
MODULE_LICENSE("GPL v2");
MODULE_DEVICE_TABLE(of, ns_pinctrl_of_match_table);

	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright (C) 2018 Rafał Miłecki <rafal@milecki.pl>
	*/

	#include <linux/err.h>
	#include <linux/io.h>
	#include <linux/module.h>
	#include <linux/of.h>
	#include <linux/of_device.h>
	#include <linux/pinctrl/pinconf-generic.h>
	#include <linux/pinctrl/pinctrl.h>
	#include <linux/pinctrl/pinmux.h>
	#include <linux/platform_device.h>
	#include <linux/slab.h>

	#define FLAG_BCM4708 BIT(1)
	#define FLAG_BCM4709 BIT(2)
	#define FLAG_BCM53012 BIT(3)

	struct ns_pinctrl {
	<------>struct device *dev;
	<------>unsigned int chipset_flag;
	<------>struct pinctrl_dev *pctldev;
	<------>void __iomem *base;

	<------>struct pinctrl_desc pctldesc;
	<------>struct ns_pinctrl_group *groups;
	<------>unsigned int num_groups;
	<------>struct ns_pinctrl_function *functions;
	<------>unsigned int num_functions;
	};

	/*
	* Pins
	*/

	static const struct pinctrl_pin_desc ns_pinctrl_pins[] = {
	<------>{ 0, "spi_clk", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 1, "spi_ss", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 2, "spi_mosi", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 3, "spi_miso", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 4, "i2c_scl", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 5, "i2c_sda", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 6, "mdc", (void *)(FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 7, "mdio", (void *)(FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 8, "pwm0", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 9, "pwm1", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 10, "pwm2", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 11, "pwm3", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 12, "uart1_rx", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 13, "uart1_tx", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 14, "uart1_cts", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 15, "uart1_rts", (void *)(FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 16, "uart2_rx", (void *)(FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 17, "uart2_tx", (void *)(FLAG_BCM4709 \| FLAG_BCM53012) },
	/* TODO { ??, "xtal_out", (void )(FLAG_BCM4709) }, /
	<------>{ 22, "sdio_pwr", (void *)(FLAG_BCM4709 \| FLAG_BCM53012) },
	<------>{ 23, "sdio_en_1p8v", (void *)(FLAG_BCM4709 \| FLAG_BCM53012) },
	};

	/*
	* Groups
	*/

	struct ns_pinctrl_group {
	<------>const char *name;
	<------>const unsigned int *pins;
	<------>const unsigned int num_pins;
	<------>unsigned int chipsets;
	};

	static const unsigned int spi_pins[] = { 0, 1, 2, 3 };
	static const unsigned int i2c_pins[] = { 4, 5 };
	static const unsigned int mdio_pins[] = { 6, 7 };
	static const unsigned int pwm0_pins[] = { 8 };
	static const unsigned int pwm1_pins[] = { 9 };
	static const unsigned int pwm2_pins[] = { 10 };
	static const unsigned int pwm3_pins[] = { 11 };
	static const unsigned int uart1_pins[] = { 12, 13, 14, 15 };
	static const unsigned int uart2_pins[] = { 16, 17 };
	static const unsigned int sdio_pwr_pins[] = { 22 };
	static const unsigned int sdio_1p8v_pins[] = { 23 };

	#define NS_GROUP(_name, _pins, _chipsets) \
	{ \
	<------>.name = _name, \
	<------>.pins = _pins, \
	<------>.num_pins = ARRAY_SIZE(_pins), \
	<------>.chipsets = _chipsets, \
	}

	static const struct ns_pinctrl_group ns_pinctrl_groups[] = {
	<------>NS_GROUP("spi_grp", spi_pins, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_GROUP("i2c_grp", i2c_pins, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_GROUP("mdio_grp", mdio_pins, FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_GROUP("pwm0_grp", pwm0_pins, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_GROUP("pwm1_grp", pwm1_pins, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_GROUP("pwm2_grp", pwm2_pins, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_GROUP("pwm3_grp", pwm3_pins, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_GROUP("uart1_grp", uart1_pins, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_GROUP("uart2_grp", uart2_pins, FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_GROUP("sdio_pwr_grp", sdio_pwr_pins, FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_GROUP("sdio_1p8v_grp", sdio_1p8v_pins, FLAG_BCM4709 \| FLAG_BCM53012),
	};

	/*
	* Functions
	*/

	struct ns_pinctrl_function {
	<------>const char *name;
	<------>const char * const *groups;
	<------>const unsigned int num_groups;
	<------>unsigned int chipsets;
	};

	static const char * const spi_groups[] = { "spi_grp" };
	static const char * const i2c_groups[] = { "i2c_grp" };
	static const char * const mdio_groups[] = { "mdio_grp" };
	static const char * const pwm_groups[] = { "pwm0_grp", "pwm1_grp", "pwm2_grp",
	<------><------><------><------><------> "pwm3_grp" };
	static const char * const uart1_groups[] = { "uart1_grp" };
	static const char * const uart2_groups[] = { "uart2_grp" };
	static const char * const sdio_groups[] = { "sdio_pwr_grp", "sdio_1p8v_grp" };

	#define NS_FUNCTION(_name, _groups, _chipsets) \
	{ \
	<------>.name = _name, \
	<------>.groups = _groups, \
	<------>.num_groups = ARRAY_SIZE(_groups), \
	<------>.chipsets = _chipsets, \
	}

	static const struct ns_pinctrl_function ns_pinctrl_functions[] = {
	<------>NS_FUNCTION("spi", spi_groups, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_FUNCTION("i2c", i2c_groups, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_FUNCTION("mdio", mdio_groups, FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_FUNCTION("pwm", pwm_groups, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_FUNCTION("uart1", uart1_groups, FLAG_BCM4708 \| FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_FUNCTION("uart2", uart2_groups, FLAG_BCM4709 \| FLAG_BCM53012),
	<------>NS_FUNCTION("sdio", sdio_groups, FLAG_BCM4709 \| FLAG_BCM53012),
	};

	/*
	* Groups code
	*/

	static int ns_pinctrl_get_groups_count(struct pinctrl_dev *pctrl_dev)
	{
	<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);

	<------>return ns_pinctrl->num_groups;
	}

	static const char ns_pinctrl_get_group_name(struct pinctrl_dev pctrl_dev,
	<------><------><------><------><------> unsigned int selector)
	{
	<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);

	<------>return ns_pinctrl->groups[selector].name;
	}

	static int ns_pinctrl_get_group_pins(struct pinctrl_dev *pctrl_dev,
	<------><------><------><------> unsigned int selector,
	<------><------><------><------> const unsigned int **pins,
	<------><------><------><------> unsigned int *num_pins)
	{
	<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);

	<------>*pins = ns_pinctrl->groups[selector].pins;
	<------>*num_pins = ns_pinctrl->groups[selector].num_pins;

	<------>return 0;
	}

	static const struct pinctrl_ops ns_pinctrl_ops = {
	<------>.get_groups_count = ns_pinctrl_get_groups_count,
	<------>.get_group_name = ns_pinctrl_get_group_name,
	<------>.get_group_pins = ns_pinctrl_get_group_pins,
	<------>.dt_node_to_map = pinconf_generic_dt_node_to_map_group,
	<------>.dt_free_map = pinconf_generic_dt_free_map,
	};

	/*
	* Functions code
	*/

	static int ns_pinctrl_get_functions_count(struct pinctrl_dev *pctrl_dev)
	{
	<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);

	<------>return ns_pinctrl->num_functions;
	}

	static const char ns_pinctrl_get_function_name(struct pinctrl_dev pctrl_dev,
	<------><------><------><------><------><------>unsigned int selector)
	{
	<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);

	<------>return ns_pinctrl->functions[selector].name;
	}

	static int ns_pinctrl_get_function_groups(struct pinctrl_dev *pctrl_dev,
	<------><------><------><------><------> unsigned int selector,
	<------><------><------><------><------> const char * const **groups,
	<------><------><------><------><------> unsigned * const num_groups)
	{
	<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);

	<------>*groups = ns_pinctrl->functions[selector].groups;
	<------>*num_groups = ns_pinctrl->functions[selector].num_groups;

	<------>return 0;
	}

	static int ns_pinctrl_set_mux(struct pinctrl_dev *pctrl_dev,
	<------><------><------> unsigned int func_select,
	<------><------><------> unsigned int grp_select)
	{
	<------>struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
	<------>u32 unset = 0;
	<------>u32 tmp;
	<------>int i;

	<------>for (i = 0; i < ns_pinctrl->groups[grp_select].num_pins; i++) {
	<------><------>int pin_number = ns_pinctrl->groups[grp_select].pins[i];

	<------><------>unset \|= BIT(pin_number);
	<------>}

	<------>tmp = readl(ns_pinctrl->base);
	<------>tmp &= ~unset;
	<------>writel(tmp, ns_pinctrl->base);

	<------>return 0;
	}

	static const struct pinmux_ops ns_pinctrl_pmxops = {
	<------>.get_functions_count = ns_pinctrl_get_functions_count,
	<------>.get_function_name = ns_pinctrl_get_function_name,
	<------>.get_function_groups = ns_pinctrl_get_function_groups,
	<------>.set_mux = ns_pinctrl_set_mux,
	};

	/*
	* Controller code
	*/

	static struct pinctrl_desc ns_pinctrl_desc = {
	<------>.name = "pinctrl-ns",
	<------>.pctlops = &ns_pinctrl_ops,
	<------>.pmxops = &ns_pinctrl_pmxops,
	};

	static const struct of_device_id ns_pinctrl_of_match_table[] = {
	<------>{ .compatible = "brcm,bcm4708-pinmux", .data = (void *)FLAG_BCM4708, },
	<------>{ .compatible = "brcm,bcm4709-pinmux", .data = (void *)FLAG_BCM4709, },
	<------>{ .compatible = "brcm,bcm53012-pinmux", .data = (void *)FLAG_BCM53012, },
	<------>{ }
	};

	static int ns_pinctrl_probe(struct platform_device *pdev)
	{
	<------>struct device *dev = &pdev->dev;
	<------>const struct of_device_id *of_id;
	<------>struct ns_pinctrl *ns_pinctrl;
	<------>struct pinctrl_desc *pctldesc;
	<------>struct pinctrl_pin_desc *pin;
	<------>struct ns_pinctrl_group *group;
	<------>struct ns_pinctrl_function *function;
	<------>struct resource *res;
	<------>int i;

	<------>ns_pinctrl = devm_kzalloc(dev, sizeof(*ns_pinctrl), GFP_KERNEL);
	<------>if (!ns_pinctrl)
	<------><------>return -ENOMEM;
	<------>pctldesc = &ns_pinctrl->pctldesc;
	<------>platform_set_drvdata(pdev, ns_pinctrl);

	<------>/* Set basic properties */

	<------>ns_pinctrl->dev = dev;

	<------>of_id = of_match_device(ns_pinctrl_of_match_table, dev);
	<------>if (!of_id)
	<------><------>return -EINVAL;
	<------>ns_pinctrl->chipset_flag = (uintptr_t)of_id->data;

	<------>res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
	<------><------><------><------><------> "cru_gpio_control");
	<------>ns_pinctrl->base = devm_ioremap_resource(dev, res);
	<------>if (IS_ERR(ns_pinctrl->base)) {
	<------><------>dev_err(dev, "Failed to map pinctrl regs\n");
	<------><------>return PTR_ERR(ns_pinctrl->base);
	<------>}

	<------>memcpy(pctldesc, &ns_pinctrl_desc, sizeof(*pctldesc));

	<------>/* Set pinctrl properties */

	<------>pctldesc->pins = devm_kcalloc(dev, ARRAY_SIZE(ns_pinctrl_pins),
	<------><------><------><------> sizeof(struct pinctrl_pin_desc),
	<------><------><------><------> GFP_KERNEL);
	<------>if (!pctldesc->pins)
	<------><------>return -ENOMEM;
	<------>for (i = 0, pin = (struct pinctrl_pin_desc *)&pctldesc->pins[0];
	<------> i < ARRAY_SIZE(ns_pinctrl_pins); i++) {
	<------><------>const struct pinctrl_pin_desc *src = &ns_pinctrl_pins[i];
	<------><------>unsigned int chipsets = (uintptr_t)src->drv_data;

	<------><------>if (chipsets & ns_pinctrl->chipset_flag) {
	<------><------><------>memcpy(pin++, src, sizeof(*src));
	<------><------><------>pctldesc->npins++;
	<------><------>}
	<------>}

	<------>ns_pinctrl->groups = devm_kcalloc(dev, ARRAY_SIZE(ns_pinctrl_groups),
	<------><------><------><------><------> sizeof(struct ns_pinctrl_group),
	<------><------><------><------><------> GFP_KERNEL);
	<------>if (!ns_pinctrl->groups)
	<------><------>return -ENOMEM;
	<------>for (i = 0, group = &ns_pinctrl->groups[0];
	<------> i < ARRAY_SIZE(ns_pinctrl_groups); i++) {
	<------><------>const struct ns_pinctrl_group *src = &ns_pinctrl_groups[i];

	<------><------>if (src->chipsets & ns_pinctrl->chipset_flag) {
	<------><------><------>memcpy(group++, src, sizeof(*src));
	<------><------><------>ns_pinctrl->num_groups++;
	<------><------>}
	<------>}

	<------>ns_pinctrl->functions = devm_kcalloc(dev,
	<------><------><------><------><------> ARRAY_SIZE(ns_pinctrl_functions),
	<------><------><------><------><------> sizeof(struct ns_pinctrl_function),
	<------><------><------><------><------> GFP_KERNEL);
	<------>if (!ns_pinctrl->functions)
	<------><------>return -ENOMEM;
	<------>for (i = 0, function = &ns_pinctrl->functions[0];
	<------> i < ARRAY_SIZE(ns_pinctrl_functions); i++) {
	<------><------>const struct ns_pinctrl_function *src = &ns_pinctrl_functions[i];

	<------><------>if (src->chipsets & ns_pinctrl->chipset_flag) {
	<------><------><------>memcpy(function++, src, sizeof(*src));
	<------><------><------>ns_pinctrl->num_functions++;
	<------><------>}
	<------>}

	<------>/* Register */

	<------>ns_pinctrl->pctldev = devm_pinctrl_register(dev, pctldesc, ns_pinctrl);
	<------>if (IS_ERR(ns_pinctrl->pctldev)) {
	<------><------>dev_err(dev, "Failed to register pinctrl\n");
	<------><------>return PTR_ERR(ns_pinctrl->pctldev);
	<------>}

	<------>return 0;
	}

	static struct platform_driver ns_pinctrl_driver = {
	<------>.probe = ns_pinctrl_probe,
	<------>.driver = {
	<------><------>.name = "ns-pinmux",
	<------><------>.of_match_table = ns_pinctrl_of_match_table,
	<------>},
	};

	module_platform_driver(ns_pinctrl_driver);

	MODULE_AUTHOR("Rafał Miłecki");
	MODULE_LICENSE("GPL v2");
	MODULE_DEVICE_TABLE(of, ns_pinctrl_of_match_table);