pinctrl: ralink: move ralink architecture pinmux header into the driver

Ralink architecture is making use of the header located in
'arch/mips/include/asm/mach-ralink/pinmux.h' to stablish the
mechanisms to make derived SoCs to set its pin functions and
groups. In order to move all architecture pinmux into a more
accurate place which is 'drivers/pinctrl/ralink' we have to
first of all move this file also there with a small modification
which creates 'rt2880_pinmux_init' function to allow SoCs pinctrl
drivers to pass its configuration to the common code located in
'pinctrl-rt2880.c' file.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20210604115159.8834-2-sergio.paracuellos@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

2 files changed, 58 insertions, 25 deletions

diff --git a/drivers/pinctrl/ralink/pinctrl-rt2880.c b/drivers/pinctrl/ralink/pinctrl-rt2880.c
index 1f4bca854add..abe31d4d448e 100644
--- a/drivers/pinctrl/ralink/pinctrl-rt2880.c
+++ b/drivers/pinctrl/ralink/pinctrl-rt2880.c
@@ -17,9 +17,9 @@
 #include <linux/pinctrl/machine.h>
 
 #include <asm/mach-ralink/ralink_regs.h>
-#include <asm/mach-ralink/pinmux.h>
 #include <asm/mach-ralink/mt7620.h>
 
+#include "pinmux.h"
 #include "../core.h"
 #include "../pinctrl-utils.h"
 
@@ -311,13 +311,14 @@ static int rt2880_pinmux_pins(struct rt2880_priv *p)
 	return 0;
 }
 
-static int rt2880_pinmux_probe(struct platform_device *pdev)
+int rt2880_pinmux_init(struct platform_device *pdev,
+		       struct rt2880_pmx_group *data)
 {
 	struct rt2880_priv *p;
 	struct pinctrl_dev *dev;
 	int err;
 
-	if (!rt2880_pinmux_data)
+	if (!data)
 		return -ENOTSUPP;
 
 	/* setup the private data */
@@ -327,7 +328,7 @@ static int rt2880_pinmux_probe(struct platform_device *pdev)
 
 	p->dev = &pdev->dev;
 	p->desc = &rt2880_pctrl_desc;
-	p->groups = rt2880_pinmux_data;
+	p->groups = data;
 	platform_set_drvdata(pdev, p);
 
 	/* init the device */
@@ -346,24 +347,3 @@ static int rt2880_pinmux_probe(struct platform_device *pdev)
 
 	return PTR_ERR_OR_ZERO(dev);
 }
-
-static const struct of_device_id rt2880_pinmux_match[] = {
-	{ .compatible = "ralink,rt2880-pinmux" },
-	{},
-};
-MODULE_DEVICE_TABLE(of, rt2880_pinmux_match);
-
-static struct platform_driver rt2880_pinmux_driver = {
-	.probe = rt2880_pinmux_probe,
-	.driver = {
-		.name = "rt2880-pinmux",
-		.of_match_table = rt2880_pinmux_match,
-	},
-};
-
-static int __init rt2880_pinmux_init(void)
-{
-	return platform_driver_register(&rt2880_pinmux_driver);
-}
-
-core_initcall_sync(rt2880_pinmux_init);
diff --git a/drivers/pinctrl/ralink/pinmux.h b/drivers/pinctrl/ralink/pinmux.h
new file mode 100644
index 000000000000..0046abe3bcc7
--- /dev/null
+++ b/drivers/pinctrl/ralink/pinmux.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  Copyright (C) 2012 John Crispin <john@phrozen.org>
+ */
+
+#ifndef _RT288X_PINMUX_H__
+#define _RT288X_PINMUX_H__
+
+#define FUNC(name, value, pin_first, pin_count) \
+	{ name, value, pin_first, pin_count }
+
+#define GRP(_name, _func, _mask, _shift) \
+	{ .name = _name, .mask = _mask, .shift = _shift, \
+	  .func = _func, .gpio = _mask, \
+	  .func_count = ARRAY_SIZE(_func) }
+
+#define GRP_G(_name, _func, _mask, _gpio, _shift) \
+	{ .name = _name, .mask = _mask, .shift = _shift, \
+	  .func = _func, .gpio = _gpio, \
+	  .func_count = ARRAY_SIZE(_func) }
+
+struct rt2880_pmx_group;
+
+struct rt2880_pmx_func {
+	const char *name;
+	const char value;
+
+	int pin_first;
+	int pin_count;
+	int *pins;
+
+	int *groups;
+	int group_count;
+
+	int enabled;
+};
+
+struct rt2880_pmx_group {
+	const char *name;
+	int enabled;
+
+	const u32 shift;
+	const char mask;
+	const char gpio;
+
+	struct rt2880_pmx_func *func;
+	int func_count;
+};
+
+int rt2880_pinmux_init(struct platform_device *pdev,
+		       struct rt2880_pmx_group *data);
+
+#endif