pinctrl: ralink: move RT288X SoC pinmux config into a new 'pinctrl-rt…

…288x.c' file

Move all related code for SoC RT288X into a new driver located
in 'pinctrl-rt288x.c' source file.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20210604115159.8834-7-sergio.paracuellos@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/mips/include/asm/mach-ralink/rt288x.h

@@ -33,15 +33,6 @@
 #define SYSTEM_CONFIG_CPUCLK_280	0x2
 #define SYSTEM_CONFIG_CPUCLK_300	0x3
 
-#define RT2880_GPIO_MODE_I2C		BIT(0)
-#define RT2880_GPIO_MODE_UART0		BIT(1)
-#define RT2880_GPIO_MODE_SPI		BIT(2)
-#define RT2880_GPIO_MODE_UART1		BIT(3)
-#define RT2880_GPIO_MODE_JTAG		BIT(4)
-#define RT2880_GPIO_MODE_MDIO		BIT(5)
-#define RT2880_GPIO_MODE_SDRAM		BIT(6)
-#define RT2880_GPIO_MODE_PCI		BIT(7)
-
 #define CLKCFG_SRAM_CS_N_WDT		BIT(9)
 
 #define RT2880_SDRAM_BASE		0x08000000

arch/mips/ralink/rt288x.c

@@ -14,29 +14,9 @@
 #include <asm/mipsregs.h>
 #include <asm/mach-ralink/ralink_regs.h>
 #include <asm/mach-ralink/rt288x.h>
-#include <asm/mach-ralink/pinmux.h>
 
 #include "common.h"
 
-static struct rt2880_pmx_func i2c_func[] = { FUNC("i2c", 0, 1, 2) };
-static struct rt2880_pmx_func spi_func[] = { FUNC("spi", 0, 3, 4) };
-static struct rt2880_pmx_func uartlite_func[] = { FUNC("uartlite", 0, 7, 8) };
-static struct rt2880_pmx_func jtag_func[] = { FUNC("jtag", 0, 17, 5) };
-static struct rt2880_pmx_func mdio_func[] = { FUNC("mdio", 0, 22, 2) };
-static struct rt2880_pmx_func sdram_func[] = { FUNC("sdram", 0, 24, 16) };
-static struct rt2880_pmx_func pci_func[] = { FUNC("pci", 0, 40, 32) };
-
-static struct rt2880_pmx_group rt2880_pinmux_data_act[] = {
-	GRP("i2c", i2c_func, 1, RT2880_GPIO_MODE_I2C),
-	GRP("spi", spi_func, 1, RT2880_GPIO_MODE_SPI),
-	GRP("uartlite", uartlite_func, 1, RT2880_GPIO_MODE_UART0),
-	GRP("jtag", jtag_func, 1, RT2880_GPIO_MODE_JTAG),
-	GRP("mdio", mdio_func, 1, RT2880_GPIO_MODE_MDIO),
-	GRP("sdram", sdram_func, 1, RT2880_GPIO_MODE_SDRAM),
-	GRP("pci", pci_func, 1, RT2880_GPIO_MODE_PCI),
-	{ 0 }
-};
-
 void __init ralink_clk_init(void)
 {
 	unsigned long cpu_rate, wmac_rate = 40000000;
@@ -106,6 +86,5 @@ void __init prom_soc_init(struct ralink_soc_info *soc_info)
 	soc_info->mem_size_min = RT2880_MEM_SIZE_MIN;
 	soc_info->mem_size_max = RT2880_MEM_SIZE_MAX;
 
-	rt2880_pinmux_data = rt2880_pinmux_data_act;
 	ralink_soc = RT2880_SOC;
 }

drivers/pinctrl/ralink/Kconfig

@@ -21,6 +21,11 @@ config PINCTRL_MT7621
         depends on RALINK && SOC_MT7621
         select PINCTRL_RT2880
 
+config PINCTRL_RT288X
+        bool "RT288X pinctrl driver for RALINK/Mediatek SOCs"
+        depends on RALINK && SOC_RT288X
+        select PINCTRL_RT2880
+
 config PINCTRL_RT305X
         bool "RT305X pinctrl driver for RALINK/Mediatek SOCs"
         depends on RALINK && SOC_RT305X

drivers/pinctrl/ralink/Makefile

@@ -3,5 +3,6 @@ obj-$(CONFIG_PINCTRL_RT2880)   += pinctrl-rt2880.o
 
 obj-$(CONFIG_PINCTRL_MT7620)   += pinctrl-mt7620.o
 obj-$(CONFIG_PINCTRL_MT7621)   += pinctrl-mt7621.o
+obj-$(CONFIG_PINCTRL_RT288X)   += pinctrl-rt288x.o
 obj-$(CONFIG_PINCTRL_RT305X)   += pinctrl-rt305x.o
 obj-$(CONFIG_PINCTRL_RT3883)   += pinctrl-rt3883.o

drivers/pinctrl/ralink/pinctrl-rt288x.c

@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/bitops.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include "pinmux.h"
+
+#define RT2880_GPIO_MODE_I2C		BIT(0)
+#define RT2880_GPIO_MODE_UART0		BIT(1)
+#define RT2880_GPIO_MODE_SPI		BIT(2)
+#define RT2880_GPIO_MODE_UART1		BIT(3)
+#define RT2880_GPIO_MODE_JTAG		BIT(4)
+#define RT2880_GPIO_MODE_MDIO		BIT(5)
+#define RT2880_GPIO_MODE_SDRAM		BIT(6)
+#define RT2880_GPIO_MODE_PCI		BIT(7)
+
+static struct rt2880_pmx_func i2c_func[] = { FUNC("i2c", 0, 1, 2) };
+static struct rt2880_pmx_func spi_func[] = { FUNC("spi", 0, 3, 4) };
+static struct rt2880_pmx_func uartlite_func[] = { FUNC("uartlite", 0, 7, 8) };
+static struct rt2880_pmx_func jtag_func[] = { FUNC("jtag", 0, 17, 5) };
+static struct rt2880_pmx_func mdio_func[] = { FUNC("mdio", 0, 22, 2) };
+static struct rt2880_pmx_func sdram_func[] = { FUNC("sdram", 0, 24, 16) };
+static struct rt2880_pmx_func pci_func[] = { FUNC("pci", 0, 40, 32) };
+
+static struct rt2880_pmx_group rt2880_pinmux_data_act[] = {
+	GRP("i2c", i2c_func, 1, RT2880_GPIO_MODE_I2C),
+	GRP("spi", spi_func, 1, RT2880_GPIO_MODE_SPI),
+	GRP("uartlite", uartlite_func, 1, RT2880_GPIO_MODE_UART0),
+	GRP("jtag", jtag_func, 1, RT2880_GPIO_MODE_JTAG),
+	GRP("mdio", mdio_func, 1, RT2880_GPIO_MODE_MDIO),
+	GRP("sdram", sdram_func, 1, RT2880_GPIO_MODE_SDRAM),
+	GRP("pci", pci_func, 1, RT2880_GPIO_MODE_PCI),
+	{ 0 }
+};
+
+static int rt288x_pinmux_probe(struct platform_device *pdev)
+{
+	return rt2880_pinmux_init(pdev, rt2880_pinmux_data_act);
+}
+
+static const struct of_device_id rt288x_pinmux_match[] = {
+	{ .compatible = "ralink,rt2880-pinmux" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, rt288x_pinmux_match);
+
+static struct platform_driver rt288x_pinmux_driver = {
+	.probe = rt288x_pinmux_probe,
+	.driver = {
+		.name = "rt2880-pinmux",
+		.of_match_table = rt288x_pinmux_match,
+	},
+};
+
+static int __init rt288x_pinmux_init(void)
+{
+	return platform_driver_register(&rt288x_pinmux_driver);
+}
+core_initcall_sync(rt288x_pinmux_init);