pinctrl: mcp23s08: Make use of device properties

Device property API allows to gather device resources from different sources,
such as ACPI. Convert the drivers to unleash the power of device property API.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200407173849.43628-7-andriy.shevchenko@linux.intel.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-mcp23s08.c

@@ -4,6 +4,7 @@
 #include <linux/kernel.h>
 #include <linux/device.h>
 #include <linux/mutex.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/gpio/driver.h>
 #include <linux/i2c.h>
@@ -11,7 +12,6 @@
 #include <linux/slab.h>
 #include <asm/byteorder.h>
 #include <linux/interrupt.h>
-#include <linux/of_device.h>
 #include <linux/regmap.h>
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/pinctrl/pinconf.h>
@@ -20,12 +20,12 @@
 /*
  * MCP types supported by driver
  */
-#define MCP_TYPE_S08	0
-#define MCP_TYPE_S17	1
-#define MCP_TYPE_008	2
-#define MCP_TYPE_017	3
-#define MCP_TYPE_S18    4
-#define MCP_TYPE_018    5
+#define MCP_TYPE_S08	1
+#define MCP_TYPE_S17	2
+#define MCP_TYPE_008	3
+#define MCP_TYPE_017	4
+#define MCP_TYPE_S18	5
+#define MCP_TYPE_018	6
 
 /* Registers are all 8 bits wide.
  *
@@ -757,7 +757,6 @@ static const struct i2c_device_id mcp230xx_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, mcp230xx_id);
 
-#ifdef CONFIG_OF
 static const struct of_device_id mcp23s08_i2c_of_match[] = {
 	{
 		.compatible = "microchip,mcp23008",
@@ -783,12 +782,11 @@ static const struct of_device_id mcp23s08_i2c_of_match[] = {
 	{ },
 };
 MODULE_DEVICE_TABLE(of, mcp23s08_i2c_of_match);
-#endif /* CONFIG_OF */
 
 static struct i2c_driver mcp230xx_driver = {
 	.driver = {
 		.name	= "mcp230xx",
-		.of_match_table = of_match_ptr(mcp23s08_i2c_of_match),
+		.of_match_table = mcp23s08_i2c_of_match,
 	},
 	.probe		= mcp230xx_probe,
 	.id_table	= mcp230xx_id,
@@ -942,17 +940,17 @@ static int mcp23s08_spi_regmap_init(struct mcp23s08 *mcp, struct device *dev,
 static int mcp23s08_probe(struct spi_device *spi)
 {
 	struct device *dev = &spi->dev;
+	const void *match;
 	unsigned			addr;
 	int				chips = 0;
 	struct mcp23s08_driver_data	*data;
 	int				status, type;
 	unsigned			ngpio = 0;
-	const struct			of_device_id *match;
 	u32				spi_present_mask;
 
-	match = of_match_device(of_match_ptr(mcp23s08_spi_of_match), &spi->dev);
+	match = device_get_match_data(dev);
 	if (match)
-		type = (int)(uintptr_t)match->data;
+		type = (int)(uintptr_t)match;
 	else
 		type = spi_get_device_id(spi)->driver_data;
 
@@ -1022,7 +1020,6 @@ static const struct spi_device_id mcp23s08_ids[] = {
 };
 MODULE_DEVICE_TABLE(spi, mcp23s08_ids);
 
-#ifdef CONFIG_OF
 static const struct of_device_id mcp23s08_spi_of_match[] = {
 	{
 		.compatible = "microchip,mcp23s08",
@@ -1048,14 +1045,13 @@ static const struct of_device_id mcp23s08_spi_of_match[] = {
 	{ },
 };
 MODULE_DEVICE_TABLE(of, mcp23s08_spi_of_match);
-#endif
 
 static struct spi_driver mcp23s08_driver = {
 	.probe		= mcp23s08_probe,
 	.id_table	= mcp23s08_ids,
 	.driver = {
 		.name	= "mcp23s08",
-		.of_match_table = of_match_ptr(mcp23s08_spi_of_match),
+		.of_match_table = mcp23s08_spi_of_match,
 	},
 };