bcm4908: backport BCM4908 pinctrl driver

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit b0145891676faa38f0a5991e3e229aed7b4a9117)

3 files changed, 747 insertions, 0 deletions

diff --git a/target/linux/bcm4908/config-5.4 b/target/linux/bcm4908/config-5.4
index bc8eadf25e..10a5ee2bfa 100644
--- a/target/linux/bcm4908/config-5.4
+++ b/target/linux/bcm4908/config-5.4
@@ -98,6 +98,9 @@ CONFIG_GENERIC_MSI_IRQ=y
 CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
 CONFIG_GENERIC_PCI_IOMAP=y
 CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_PINCTRL_GROUPS=y
+CONFIG_GENERIC_PINMUX_FUNCTIONS=y
 CONFIG_GENERIC_SCHED_CLOCK=y
 CONFIG_GENERIC_SMP_IDLE_THREAD=y
 CONFIG_GENERIC_STRNCPY_FROM_USER=y
@@ -177,6 +180,9 @@ CONFIG_PHYLIB=y
 CONFIG_PHYLINK=y
 CONFIG_PHYS_ADDR_T_64BIT=y
 CONFIG_PHY_BRCM_USB=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_BCM4908=y
+# CONFIG_PINCTRL_SINGLE is not set
 CONFIG_PM=y
 CONFIG_PM_CLK=y
 CONFIG_PM_GENERIC_DOMAINS=y
diff --git a/target/linux/bcm4908/patches-5.4/087-v5.18-0001-dt-bindings-pinctrl-Add-binding-for-BCM4908-pinctrl.patch b/target/linux/bcm4908/patches-5.4/087-v5.18-0001-dt-bindings-pinctrl-Add-binding-for-BCM4908-pinctrl.patch
new file mode 100644
index 0000000000..142cabf519
--- /dev/null
+++ b/target/linux/bcm4908/patches-5.4/087-v5.18-0001-dt-bindings-pinctrl-Add-binding-for-BCM4908-pinctrl.patch
@@ -0,0 +1,111 @@
+From 7b5730f0ff24b0d7d1cb660a482384a807618a46 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Mon, 24 Jan 2022 11:22:42 +0100
+Subject: [PATCH] dt-bindings: pinctrl: Add binding for BCM4908 pinctrl
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+It's hardware block that is part of every SoC from BCM4908 family.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Link: https://lore.kernel.org/r/20220124102243.14912-1-zajec5@gmail.com
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ .../pinctrl/brcm,bcm4908-pinctrl.yaml         | 72 +++++++++++++++++++
+ MAINTAINERS                                   |  7 ++
+ 2 files changed, 79 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/pinctrl/brcm,bcm4908-pinctrl.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/pinctrl/brcm,bcm4908-pinctrl.yaml
+@@ -0,0 +1,72 @@
++# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/pinctrl/brcm,bcm4908-pinctrl.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Broadcom BCM4908 pin controller
++
++maintainers:
++  - Rafał Miłecki <rafal@milecki.pl>
++
++description:
++  Binding for pin controller present on BCM4908 family SoCs.
++
++properties:
++  compatible:
++    const: brcm,bcm4908-pinctrl
++
++  reg:
++    maxItems: 1
++
++patternProperties:
++  '-pins$':
++    type: object
++    $ref: pinmux-node.yaml#
++
++    properties:
++      function:
++        enum: [ led_0, led_1, led_2, led_3, led_4, led_5, led_6, led_7, led_8,
++                led_9, led_10, led_11, led_12, led_13, led_14, led_15, led_16,
++                led_17, led_18, led_19, led_20, led_21, led_22, led_23, led_24,
++                led_25, led_26, led_27, led_28, led_29, led_30, led_31,
++                hs_uart, i2c, i2s, nand_ctrl, nand_data, emmc_ctrl, usb0_pwr,
++                usb1_pwr ]
++
++      groups:
++        minItems: 1
++        maxItems: 2
++        items:
++          enum: [ led_0_grp_a, led_1_grp_a, led_2_grp_a, led_3_grp_a,
++                  led_4_grp_a, led_5_grp_a, led_6_grp_a, led_7_grp_a,
++                  led_8_grp_a, led_9_grp_a, led_10_grp_a, led_10_grp_b,
++                  led_11_grp_a, led_11_grp_b, led_12_grp_a, led_12_grp_b,
++                  led_13_grp_a, led_13_grp_b, led_14_grp_a, led_15_grp_a,
++                  led_16_grp_a, led_17_grp_a, led_18_grp_a, led_19_grp_a,
++                  led_20_grp_a, led_21_grp_a, led_22_grp_a, led_23_grp_a,
++                  led_24_grp_a, led_25_grp_a, led_26_grp_a, led_27_grp_a,
++                  led_28_grp_a, led_29_grp_a, led_30_grp_a, led_31_grp_a,
++                  led_31_grp_b, hs_uart_grp, i2c_grp_a, i2c_grp_b, i2s_grp,
++                  nand_ctrl_grp, nand_data_grp, emmc_ctrl_grp, usb0_pwr_grp,
++                  usb1_pwr_grp ]
++
++allOf:
++  - $ref: pinctrl.yaml#
++
++required:
++  - compatible
++  - reg
++
++unevaluatedProperties: false
++
++examples:
++  - |
++    pinctrl@ff800560 {
++        compatible = "brcm,bcm4908-pinctrl";
++        reg = <0xff800560 0x10>;
++
++        led_0-a-pins {
++            function = "led_0";
++            groups = "led_0_grp_a";
++        };
++    };
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -3216,6 +3216,13 @@ F:	Documentation/devicetree/bindings/net
+ F:	drivers/net/ethernet/broadcom/bcm4908_enet.*
+ F:	drivers/net/ethernet/broadcom/unimac.h
+ 
++BROADCOM BCM4908 PINMUX DRIVER
++M:	Rafał Miłecki <rafal@milecki.pl>
++M:	bcm-kernel-feedback-list@broadcom.com
++L:	linux-gpio@vger.kernel.org
++S:	Maintained
++F:	Documentation/devicetree/bindings/pinctrl/brcm,bcm4908-pinctrl.yaml
++
+ BROADCOM BCM5301X ARM ARCHITECTURE
+ M:	Hauke Mehrtens <hauke@hauke-m.de>
+ M:	Rafał Miłecki <zajec5@gmail.com>
diff --git a/target/linux/bcm4908/patches-5.4/087-v5.18-0002-pinctrl-bcm-add-driver-for-BCM4908-pinmux.patch b/target/linux/bcm4908/patches-5.4/087-v5.18-0002-pinctrl-bcm-add-driver-for-BCM4908-pinmux.patch
new file mode 100644
index 0000000000..c53ac092ce
--- /dev/null
+++ b/target/linux/bcm4908/patches-5.4/087-v5.18-0002-pinctrl-bcm-add-driver-for-BCM4908-pinmux.patch
@@ -0,0 +1,630 @@
+From f7e322d99f1180270fb4a3e1ae992b3116cfcf34 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Mon, 24 Jan 2022 11:22:43 +0100
+Subject: [PATCH] pinctrl: bcm: add driver for BCM4908 pinmux
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+BCM4908 has its own pins layout so it needs a custom binding and a Linux
+driver.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
+Link: https://lore.kernel.org/r/20220124102243.14912-2-zajec5@gmail.com
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ MAINTAINERS                           |   1 +
+ drivers/pinctrl/bcm/Kconfig           |  14 +
+ drivers/pinctrl/bcm/Makefile          |   1 +
+ drivers/pinctrl/bcm/pinctrl-bcm4908.c | 563 ++++++++++++++++++++++++++
+ 4 files changed, 579 insertions(+)
+ create mode 100644 drivers/pinctrl/bcm/pinctrl-bcm4908.c
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -3222,6 +3222,7 @@ M:	bcm-kernel-feedback-list@broadcom.com
+ L:	linux-gpio@vger.kernel.org
+ S:	Maintained
+ F:	Documentation/devicetree/bindings/pinctrl/brcm,bcm4908-pinctrl.yaml
++F:	drivers/pinctrl/bcm/pinctrl-bcm4908.c
+ 
+ BROADCOM BCM5301X ARM ARCHITECTURE
+ M:	Hauke Mehrtens <hauke@hauke-m.de>
+--- a/drivers/pinctrl/bcm/Kconfig
++++ b/drivers/pinctrl/bcm/Kconfig
+@@ -29,6 +29,20 @@ config PINCTRL_BCM2835
+ 	help
+ 	   Say Y here to enable the Broadcom BCM2835 GPIO driver.
+ 
++config PINCTRL_BCM4908
++	tristate "Broadcom BCM4908 pinmux driver"
++	depends on OF && (ARCH_BCM4908 || COMPILE_TEST)
++	select PINMUX
++	select PINCONF
++	select GENERIC_PINCONF
++	select GENERIC_PINCTRL_GROUPS
++	select GENERIC_PINMUX_FUNCTIONS
++	default ARCH_BCM4908
++	help
++	  Driver for BCM4908 family SoCs with integrated pin controller.
++
++	  If compiled as module it will be called pinctrl-bcm4908.
++
+ config PINCTRL_IPROC_GPIO
+ 	bool "Broadcom iProc GPIO (with PINCONF) driver"
+ 	depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
+--- a/drivers/pinctrl/bcm/Makefile
++++ b/drivers/pinctrl/bcm/Makefile
+@@ -3,6 +3,7 @@
+ 
+ obj-$(CONFIG_PINCTRL_BCM281XX)		+= pinctrl-bcm281xx.o
+ obj-$(CONFIG_PINCTRL_BCM2835)		+= pinctrl-bcm2835.o
++obj-$(CONFIG_PINCTRL_BCM4908)		+= pinctrl-bcm4908.o
+ obj-$(CONFIG_PINCTRL_IPROC_GPIO)	+= pinctrl-iproc-gpio.o
+ obj-$(CONFIG_PINCTRL_CYGNUS_MUX)	+= pinctrl-cygnus-mux.o
+ obj-$(CONFIG_PINCTRL_NS)		+= pinctrl-ns.o
+--- /dev/null
++++ b/drivers/pinctrl/bcm/pinctrl-bcm4908.c
+@@ -0,0 +1,561 @@
++// SPDX-License-Identifier: GPL-2.0
++/* Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl> */
++
++#include <linux/err.h>
++#include <linux/io.h>
++#include <linux/mod_devicetable.h>
++#include <linux/module.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>
++#include <linux/string_helpers.h>
++
++#include "../core.h"
++#include "../pinmux.h"
++
++#define BCM4908_NUM_PINS			86
++
++#define BCM4908_TEST_PORT_BLOCK_EN_LSB			0x00
++#define BCM4908_TEST_PORT_BLOCK_DATA_MSB		0x04
++#define BCM4908_TEST_PORT_BLOCK_DATA_LSB		0x08
++#define  BCM4908_TEST_PORT_LSB_PINMUX_DATA_SHIFT	12
++#define BCM4908_TEST_PORT_COMMAND			0x0c
++#define  BCM4908_TEST_PORT_CMD_LOAD_MUX_REG		0x00000021
++
++struct bcm4908_pinctrl {
++	struct device *dev;
++	void __iomem *base;
++	struct mutex mutex;
++	struct pinctrl_dev *pctldev;
++	struct pinctrl_desc pctldesc;
++};
++
++/*
++ * Groups
++ */
++
++struct bcm4908_pinctrl_pin_setup {
++	unsigned int number;
++	unsigned int function;
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_0_pins_a[] = {
++	{ 0, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_1_pins_a[] = {
++	{ 1, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_2_pins_a[] = {
++	{ 2, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_3_pins_a[] = {
++	{ 3, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_4_pins_a[] = {
++	{ 4, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_5_pins_a[] = {
++	{ 5, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_6_pins_a[] = {
++	{ 6, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_7_pins_a[] = {
++	{ 7, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_8_pins_a[] = {
++	{ 8, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_9_pins_a[] = {
++	{ 9, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_10_pins_a[] = {
++	{ 10, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_11_pins_a[] = {
++	{ 11, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_12_pins_a[] = {
++	{ 12, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_13_pins_a[] = {
++	{ 13, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_14_pins_a[] = {
++	{ 14, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_15_pins_a[] = {
++	{ 15, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_16_pins_a[] = {
++	{ 16, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_17_pins_a[] = {
++	{ 17, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_18_pins_a[] = {
++	{ 18, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_19_pins_a[] = {
++	{ 19, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_20_pins_a[] = {
++	{ 20, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_21_pins_a[] = {
++	{ 21, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_22_pins_a[] = {
++	{ 22, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_23_pins_a[] = {
++	{ 23, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_24_pins_a[] = {
++	{ 24, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_25_pins_a[] = {
++	{ 25, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_26_pins_a[] = {
++	{ 26, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_27_pins_a[] = {
++	{ 27, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_28_pins_a[] = {
++	{ 28, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_29_pins_a[] = {
++	{ 29, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_30_pins_a[] = {
++	{ 30, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_31_pins_a[] = {
++	{ 31, 3 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_10_pins_b[] = {
++	{ 8, 2 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_11_pins_b[] = {
++	{ 9, 2 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_12_pins_b[] = {
++	{ 0, 2 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_13_pins_b[] = {
++	{ 1, 2 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup led_31_pins_b[] = {
++	{ 30, 2 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup hs_uart_pins[] = {
++	{ 10, 0 },	/* CTS */
++	{ 11, 0 },	/* RTS */
++	{ 12, 0 },	/* RXD */
++	{ 13, 0 },	/* TXD */
++};
++
++static const struct bcm4908_pinctrl_pin_setup i2c_pins_a[] = {
++	{ 18, 0 },	/* SDA */
++	{ 19, 0 },	/* SCL */
++};
++
++static const struct bcm4908_pinctrl_pin_setup i2c_pins_b[] = {
++	{ 22, 0 },	/* SDA */
++	{ 23, 0 },	/* SCL */
++};
++
++static const struct bcm4908_pinctrl_pin_setup i2s_pins[] = {
++	{ 27, 0 },	/* MCLK */
++	{ 28, 0 },	/* LRCK */
++	{ 29, 0 },	/* SDATA */
++	{ 30, 0 },	/* SCLK */
++};
++
++static const struct bcm4908_pinctrl_pin_setup nand_ctrl_pins[] = {
++	{ 32, 0 },
++	{ 33, 0 },
++	{ 34, 0 },
++	{ 43, 0 },
++	{ 44, 0 },
++	{ 45, 0 },
++	{ 56, 1 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup nand_data_pins[] = {
++	{ 35, 0 },
++	{ 36, 0 },
++	{ 37, 0 },
++	{ 38, 0 },
++	{ 39, 0 },
++	{ 40, 0 },
++	{ 41, 0 },
++	{ 42, 0 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup emmc_ctrl_pins[] = {
++	{ 46, 0 },
++	{ 47, 0 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup usb0_pwr_pins[] = {
++	{ 63, 0 },
++	{ 64, 0 },
++};
++
++static const struct bcm4908_pinctrl_pin_setup usb1_pwr_pins[] = {
++	{ 66, 0 },
++	{ 67, 0 },
++};
++
++struct bcm4908_pinctrl_grp {
++	const char *name;
++	const struct bcm4908_pinctrl_pin_setup *pins;
++	const unsigned int num_pins;
++};
++
++static const struct bcm4908_pinctrl_grp bcm4908_pinctrl_grps[] = {
++	{ "led_0_grp_a", led_0_pins_a, ARRAY_SIZE(led_0_pins_a) },
++	{ "led_1_grp_a", led_1_pins_a, ARRAY_SIZE(led_1_pins_a) },
++	{ "led_2_grp_a", led_2_pins_a, ARRAY_SIZE(led_2_pins_a) },
++	{ "led_3_grp_a", led_3_pins_a, ARRAY_SIZE(led_3_pins_a) },
++	{ "led_4_grp_a", led_4_pins_a, ARRAY_SIZE(led_4_pins_a) },
++	{ "led_5_grp_a", led_5_pins_a, ARRAY_SIZE(led_5_pins_a) },
++	{ "led_6_grp_a", led_6_pins_a, ARRAY_SIZE(led_6_pins_a) },
++	{ "led_7_grp_a", led_7_pins_a, ARRAY_SIZE(led_7_pins_a) },
++	{ "led_8_grp_a", led_8_pins_a, ARRAY_SIZE(led_8_pins_a) },
++	{ "led_9_grp_a", led_9_pins_a, ARRAY_SIZE(led_9_pins_a) },
++	{ "led_10_grp_a", led_10_pins_a, ARRAY_SIZE(led_10_pins_a) },
++	{ "led_11_grp_a", led_11_pins_a, ARRAY_SIZE(led_11_pins_a) },
++	{ "led_12_grp_a", led_12_pins_a, ARRAY_SIZE(led_12_pins_a) },
++	{ "led_13_grp_a", led_13_pins_a, ARRAY_SIZE(led_13_pins_a) },
++	{ "led_14_grp_a", led_14_pins_a, ARRAY_SIZE(led_14_pins_a) },
++	{ "led_15_grp_a", led_15_pins_a, ARRAY_SIZE(led_15_pins_a) },
++	{ "led_16_grp_a", led_16_pins_a, ARRAY_SIZE(led_16_pins_a) },
++	{ "led_17_grp_a", led_17_pins_a, ARRAY_SIZE(led_17_pins_a) },
++	{ "led_18_grp_a", led_18_pins_a, ARRAY_SIZE(led_18_pins_a) },
++	{ "led_19_grp_a", led_19_pins_a, ARRAY_SIZE(led_19_pins_a) },
++	{ "led_20_grp_a", led_20_pins_a, ARRAY_SIZE(led_20_pins_a) },
++	{ "led_21_grp_a", led_21_pins_a, ARRAY_SIZE(led_21_pins_a) },
++	{ "led_22_grp_a", led_22_pins_a, ARRAY_SIZE(led_22_pins_a) },
++	{ "led_23_grp_a", led_23_pins_a, ARRAY_SIZE(led_23_pins_a) },
++	{ "led_24_grp_a", led_24_pins_a, ARRAY_SIZE(led_24_pins_a) },
++	{ "led_25_grp_a", led_25_pins_a, ARRAY_SIZE(led_25_pins_a) },
++	{ "led_26_grp_a", led_26_pins_a, ARRAY_SIZE(led_26_pins_a) },
++	{ "led_27_grp_a", led_27_pins_a, ARRAY_SIZE(led_27_pins_a) },
++	{ "led_28_grp_a", led_28_pins_a, ARRAY_SIZE(led_28_pins_a) },
++	{ "led_29_grp_a", led_29_pins_a, ARRAY_SIZE(led_29_pins_a) },
++	{ "led_30_grp_a", led_30_pins_a, ARRAY_SIZE(led_30_pins_a) },
++	{ "led_31_grp_a", led_31_pins_a, ARRAY_SIZE(led_31_pins_a) },
++	{ "led_10_grp_b", led_10_pins_b, ARRAY_SIZE(led_10_pins_b) },
++	{ "led_11_grp_b", led_11_pins_b, ARRAY_SIZE(led_11_pins_b) },
++	{ "led_12_grp_b", led_12_pins_b, ARRAY_SIZE(led_12_pins_b) },
++	{ "led_13_grp_b", led_13_pins_b, ARRAY_SIZE(led_13_pins_b) },
++	{ "led_31_grp_b", led_31_pins_b, ARRAY_SIZE(led_31_pins_b) },
++	{ "hs_uart_grp", hs_uart_pins, ARRAY_SIZE(hs_uart_pins) },
++	{ "i2c_grp_a", i2c_pins_a, ARRAY_SIZE(i2c_pins_a) },
++	{ "i2c_grp_b", i2c_pins_b, ARRAY_SIZE(i2c_pins_b) },
++	{ "i2s_grp", i2s_pins, ARRAY_SIZE(i2s_pins) },
++	{ "nand_ctrl_grp", nand_ctrl_pins, ARRAY_SIZE(nand_ctrl_pins) },
++	{ "nand_data_grp", nand_data_pins, ARRAY_SIZE(nand_data_pins) },
++	{ "emmc_ctrl_grp", emmc_ctrl_pins, ARRAY_SIZE(emmc_ctrl_pins) },
++	{ "usb0_pwr_grp", usb0_pwr_pins, ARRAY_SIZE(usb0_pwr_pins) },
++	{ "usb1_pwr_grp", usb1_pwr_pins, ARRAY_SIZE(usb1_pwr_pins) },
++};
++
++/*
++ * Functions
++ */
++
++struct bcm4908_pinctrl_function {
++	const char *name;
++	const char * const *groups;
++	const unsigned int num_groups;
++};
++
++static const char * const led_0_groups[] = { "led_0_grp_a" };
++static const char * const led_1_groups[] = { "led_1_grp_a" };
++static const char * const led_2_groups[] = { "led_2_grp_a" };
++static const char * const led_3_groups[] = { "led_3_grp_a" };
++static const char * const led_4_groups[] = { "led_4_grp_a" };
++static const char * const led_5_groups[] = { "led_5_grp_a" };
++static const char * const led_6_groups[] = { "led_6_grp_a" };
++static const char * const led_7_groups[] = { "led_7_grp_a" };
++static const char * const led_8_groups[] = { "led_8_grp_a" };
++static const char * const led_9_groups[] = { "led_9_grp_a" };
++static const char * const led_10_groups[] = { "led_10_grp_a", "led_10_grp_b" };
++static const char * const led_11_groups[] = { "led_11_grp_a", "led_11_grp_b" };
++static const char * const led_12_groups[] = { "led_12_grp_a", "led_12_grp_b" };
++static const char * const led_13_groups[] = { "led_13_grp_a", "led_13_grp_b" };
++static const char * const led_14_groups[] = { "led_14_grp_a" };
++static const char * const led_15_groups[] = { "led_15_grp_a" };
++static const char * const led_16_groups[] = { "led_16_grp_a" };
++static const char * const led_17_groups[] = { "led_17_grp_a" };
++static const char * const led_18_groups[] = { "led_18_grp_a" };
++static const char * const led_19_groups[] = { "led_19_grp_a" };
++static const char * const led_20_groups[] = { "led_20_grp_a" };
++static const char * const led_21_groups[] = { "led_21_grp_a" };
++static const char * const led_22_groups[] = { "led_22_grp_a" };
++static const char * const led_23_groups[] = { "led_23_grp_a" };
++static const char * const led_24_groups[] = { "led_24_grp_a" };
++static const char * const led_25_groups[] = { "led_25_grp_a" };
++static const char * const led_26_groups[] = { "led_26_grp_a" };
++static const char * const led_27_groups[] = { "led_27_grp_a" };
++static const char * const led_28_groups[] = { "led_28_grp_a" };
++static const char * const led_29_groups[] = { "led_29_grp_a" };
++static const char * const led_30_groups[] = { "led_30_grp_a" };
++static const char * const led_31_groups[] = { "led_31_grp_a", "led_31_grp_b" };
++static const char * const hs_uart_groups[] = { "hs_uart_grp" };
++static const char * const i2c_groups[] = { "i2c_grp_a", "i2c_grp_b" };
++static const char * const i2s_groups[] = { "i2s_grp" };
++static const char * const nand_ctrl_groups[] = { "nand_ctrl_grp" };
++static const char * const nand_data_groups[] = { "nand_data_grp" };
++static const char * const emmc_ctrl_groups[] = { "emmc_ctrl_grp" };
++static const char * const usb0_pwr_groups[] = { "usb0_pwr_grp" };
++static const char * const usb1_pwr_groups[] = { "usb1_pwr_grp" };
++
++static const struct bcm4908_pinctrl_function bcm4908_pinctrl_functions[] = {
++	{ "led_0", led_0_groups, ARRAY_SIZE(led_0_groups) },
++	{ "led_1", led_1_groups, ARRAY_SIZE(led_1_groups) },
++	{ "led_2", led_2_groups, ARRAY_SIZE(led_2_groups) },
++	{ "led_3", led_3_groups, ARRAY_SIZE(led_3_groups) },
++	{ "led_4", led_4_groups, ARRAY_SIZE(led_4_groups) },
++	{ "led_5", led_5_groups, ARRAY_SIZE(led_5_groups) },
++	{ "led_6", led_6_groups, ARRAY_SIZE(led_6_groups) },
++	{ "led_7", led_7_groups, ARRAY_SIZE(led_7_groups) },
++	{ "led_8", led_8_groups, ARRAY_SIZE(led_8_groups) },
++	{ "led_9", led_9_groups, ARRAY_SIZE(led_9_groups) },
++	{ "led_10", led_10_groups, ARRAY_SIZE(led_10_groups) },
++	{ "led_11", led_11_groups, ARRAY_SIZE(led_11_groups) },
++	{ "led_12", led_12_groups, ARRAY_SIZE(led_12_groups) },
++	{ "led_13", led_13_groups, ARRAY_SIZE(led_13_groups) },
++	{ "led_14", led_14_groups, ARRAY_SIZE(led_14_groups) },
++	{ "led_15", led_15_groups, ARRAY_SIZE(led_15_groups) },
++	{ "led_16", led_16_groups, ARRAY_SIZE(led_16_groups) },
++	{ "led_17", led_17_groups, ARRAY_SIZE(led_17_groups) },
++	{ "led_18", led_18_groups, ARRAY_SIZE(led_18_groups) },
++	{ "led_19", led_19_groups, ARRAY_SIZE(led_19_groups) },
++	{ "led_20", led_20_groups, ARRAY_SIZE(led_20_groups) },
++	{ "led_21", led_21_groups, ARRAY_SIZE(led_21_groups) },
++	{ "led_22", led_22_groups, ARRAY_SIZE(led_22_groups) },
++	{ "led_23", led_23_groups, ARRAY_SIZE(led_23_groups) },
++	{ "led_24", led_24_groups, ARRAY_SIZE(led_24_groups) },
++	{ "led_25", led_25_groups, ARRAY_SIZE(led_25_groups) },
++	{ "led_26", led_26_groups, ARRAY_SIZE(led_26_groups) },
++	{ "led_27", led_27_groups, ARRAY_SIZE(led_27_groups) },
++	{ "led_28", led_28_groups, ARRAY_SIZE(led_28_groups) },
++	{ "led_29", led_29_groups, ARRAY_SIZE(led_29_groups) },
++	{ "led_30", led_30_groups, ARRAY_SIZE(led_30_groups) },
++	{ "led_31", led_31_groups, ARRAY_SIZE(led_31_groups) },
++	{ "hs_uart", hs_uart_groups, ARRAY_SIZE(hs_uart_groups) },
++	{ "i2c", i2c_groups, ARRAY_SIZE(i2c_groups) },
++	{ "i2s", i2s_groups, ARRAY_SIZE(i2s_groups) },
++	{ "nand_ctrl", nand_ctrl_groups, ARRAY_SIZE(nand_ctrl_groups) },
++	{ "nand_data", nand_data_groups, ARRAY_SIZE(nand_data_groups) },
++	{ "emmc_ctrl", emmc_ctrl_groups, ARRAY_SIZE(emmc_ctrl_groups) },
++	{ "usb0_pwr", usb0_pwr_groups, ARRAY_SIZE(usb0_pwr_groups) },
++	{ "usb1_pwr", usb1_pwr_groups, ARRAY_SIZE(usb1_pwr_groups) },
++};
++
++/*
++ * Groups code
++ */
++
++static const struct pinctrl_ops bcm4908_pinctrl_ops = {
++	.get_groups_count = pinctrl_generic_get_group_count,
++	.get_group_name = pinctrl_generic_get_group_name,
++	.get_group_pins = pinctrl_generic_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 bcm4908_pinctrl_set_mux(struct pinctrl_dev *pctrl_dev,
++			      unsigned int func_selector,
++			      unsigned int group_selector)
++{
++	struct bcm4908_pinctrl *bcm4908_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
++	const struct bcm4908_pinctrl_grp *group;
++	struct group_desc *group_desc;
++	int i;
++
++	group_desc = pinctrl_generic_get_group(pctrl_dev, group_selector);
++	if (!group_desc)
++		return -EINVAL;
++	group = group_desc->data;
++
++	mutex_lock(&bcm4908_pinctrl->mutex);
++	for (i = 0; i < group->num_pins; i++) {
++		u32 lsb = 0;
++
++		lsb |= group->pins[i].number;
++		lsb |= group->pins[i].function << BCM4908_TEST_PORT_LSB_PINMUX_DATA_SHIFT;
++
++		writel(0x0, bcm4908_pinctrl->base + BCM4908_TEST_PORT_BLOCK_DATA_MSB);
++		writel(lsb, bcm4908_pinctrl->base + BCM4908_TEST_PORT_BLOCK_DATA_LSB);
++		writel(BCM4908_TEST_PORT_CMD_LOAD_MUX_REG,
++		       bcm4908_pinctrl->base + BCM4908_TEST_PORT_COMMAND);
++	}
++	mutex_unlock(&bcm4908_pinctrl->mutex);
++
++	return 0;
++}
++
++static const struct pinmux_ops bcm4908_pinctrl_pmxops = {
++	.get_functions_count = pinmux_generic_get_function_count,
++	.get_function_name = pinmux_generic_get_function_name,
++	.get_function_groups = pinmux_generic_get_function_groups,
++	.set_mux = bcm4908_pinctrl_set_mux,
++};
++
++/*
++ * Controller code
++ */
++
++static struct pinctrl_desc bcm4908_pinctrl_desc = {
++	.name = "bcm4908-pinctrl",
++	.pctlops = &bcm4908_pinctrl_ops,
++	.pmxops = &bcm4908_pinctrl_pmxops,
++};
++
++static const struct of_device_id bcm4908_pinctrl_of_match_table[] = {
++	{ .compatible = "brcm,bcm4908-pinctrl", },
++	{ }
++};
++
++static int bcm4908_pinctrl_probe(struct platform_device *pdev)
++{
++	struct device *dev = &pdev->dev;
++	struct bcm4908_pinctrl *bcm4908_pinctrl;
++	struct pinctrl_desc *pctldesc;
++	struct pinctrl_pin_desc *pins;
++	int i;
++
++	bcm4908_pinctrl = devm_kzalloc(dev, sizeof(*bcm4908_pinctrl), GFP_KERNEL);
++	if (!bcm4908_pinctrl)
++		return -ENOMEM;
++	pctldesc = &bcm4908_pinctrl->pctldesc;
++	platform_set_drvdata(pdev, bcm4908_pinctrl);
++
++	/* Set basic properties */
++
++	bcm4908_pinctrl->dev = dev;
++
++	bcm4908_pinctrl->base = devm_platform_ioremap_resource(pdev, 0);
++	if (IS_ERR(bcm4908_pinctrl->base))
++		return PTR_ERR(bcm4908_pinctrl->base);
++
++	mutex_init(&bcm4908_pinctrl->mutex);
++
++	memcpy(pctldesc, &bcm4908_pinctrl_desc, sizeof(*pctldesc));
++
++	/* Set pinctrl properties */
++
++	pins = devm_kcalloc(dev, BCM4908_NUM_PINS, sizeof(*pins), GFP_KERNEL);
++	if (!pins)
++		return -ENOMEM;
++	for (i = 0; i < BCM4908_NUM_PINS; i++) {
++		pins[i].number = i;
++		pins[i].name = devm_kasprintf(dev, GFP_KERNEL, "pin-%d", i);
++		if (!pins[i].name)
++			return -ENOMEM;
++	}
++	pctldesc->pins = pins;
++	pctldesc->npins = BCM4908_NUM_PINS;
++
++	/* Register */
++
++	bcm4908_pinctrl->pctldev = devm_pinctrl_register(dev, pctldesc, bcm4908_pinctrl);
++	if (IS_ERR(bcm4908_pinctrl->pctldev)) {
++		dev_err(dev, "Failed to register pinctrl\n");
++		return PTR_ERR(bcm4908_pinctrl->pctldev);
++	}
++
++	/* Groups */
++
++	for (i = 0; i < ARRAY_SIZE(bcm4908_pinctrl_grps); i++) {
++		const struct bcm4908_pinctrl_grp *group = &bcm4908_pinctrl_grps[i];
++		int *pins;
++		int j;
++
++		pins = devm_kcalloc(dev, group->num_pins, sizeof(*pins), GFP_KERNEL);
++		if (!pins)
++			return -ENOMEM;
++		for (j = 0; j < group->num_pins; j++)
++			pins[j] = group->pins[j].number;
++
++		pinctrl_generic_add_group(bcm4908_pinctrl->pctldev, group->name,
++					  pins, group->num_pins, (void *)group);
++	}
++
++	/* Functions */
++
++	for (i = 0; i < ARRAY_SIZE(bcm4908_pinctrl_functions); i++) {
++		const struct bcm4908_pinctrl_function *function = &bcm4908_pinctrl_functions[i];
++
++		pinmux_generic_add_function(bcm4908_pinctrl->pctldev,
++					    function->name,
++					    function->groups,
++					    function->num_groups, NULL);
++	}
++
++	return 0;
++}
++
++static struct platform_driver bcm4908_pinctrl_driver = {
++	.probe = bcm4908_pinctrl_probe,
++	.driver = {
++		.name = "bcm4908-pinctrl",
++		.of_match_table = bcm4908_pinctrl_of_match_table,
++	},
++};
++
++module_platform_driver(bcm4908_pinctrl_driver);
++
++MODULE_AUTHOR("Rafał Miłecki");
++MODULE_LICENSE("GPL v2");
++MODULE_DEVICE_TABLE(of, bcm4908_pinctrl_of_match_table);