pcmcia: at91_cf: remove platform data support

Board file support has been removed for at91rm9200 back in 2014, make the
CF driver DT only.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200930184804.3127757-2-alexandre.belloni@bootlin.com

drivers/pcmcia/Kconfig

@@ -258,6 +258,7 @@ config OMAP_CF
 config AT91_CF
 	tristate "AT91 CompactFlash Controller"
 	depends on PCI
+	depends on OF
 	depends on PCMCIA && ARCH_AT91
 	help
 	  Say Y here to support the CompactFlash controller on AT91 chips.

drivers/pcmcia/at91_cf.c

@@ -219,16 +219,18 @@ static struct pccard_operations at91_cf_ops = {
 
 /*--------------------------------------------------------------------------*/
 
-#if defined(CONFIG_OF)
 static const struct of_device_id at91_cf_dt_ids[] = {
 	{ .compatible = "atmel,at91rm9200-cf" },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, at91_cf_dt_ids);
 
-static int at91_cf_dt_init(struct platform_device *pdev)
+static int at91_cf_probe(struct platform_device *pdev)
 {
-	struct at91_cf_data *board;
+	struct at91_cf_socket	*cf;
+	struct at91_cf_data	*board;
+	struct resource		*io;
+	int			status;
 
 	board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
 	if (!board)
@@ -239,33 +241,9 @@ static int at91_cf_dt_init(struct platform_device *pdev)
 	board->vcc_pin = of_get_gpio(pdev->dev.of_node, 2);
 	board->rst_pin = of_get_gpio(pdev->dev.of_node, 3);
 
-	pdev->dev.platform_data = board;
-
 	mc = syscon_regmap_lookup_by_compatible("atmel,at91rm9200-sdramc");
-
-	return PTR_ERR_OR_ZERO(mc);
-}
-#else
-static int at91_cf_dt_init(struct platform_device *pdev)
-{
-	return -ENODEV;
-}
-#endif
-
-static int at91_cf_probe(struct platform_device *pdev)
-{
-	struct at91_cf_socket	*cf;
-	struct at91_cf_data	*board = pdev->dev.platform_data;
-	struct resource		*io;
-	int			status;
-
-	if (!board) {
-		status = at91_cf_dt_init(pdev);
-		if (status)
-			return status;
-
-		board = pdev->dev.platform_data;
-	}
+	if (IS_ERR(mc))
+		return PTR_ERR(mc);
 
 	if (!gpio_is_valid(board->det_pin) || !gpio_is_valid(board->rst_pin))
 		return -ENODEV;
@@ -409,7 +387,7 @@ static int at91_cf_resume(struct platform_device *pdev)
 static struct platform_driver at91_cf_driver = {
 	.driver = {
 		.name		= "at91_cf",
-		.of_match_table = of_match_ptr(at91_cf_dt_ids),
+		.of_match_table = at91_cf_dt_ids,
 	},
 	.probe		= at91_cf_probe,
 	.remove		= at91_cf_remove,