Input: axp20x-pek - Use new soc_intel_is_cht() helper

Use the new soc_intel_is_cht() helper to find out if we are running
on a CHT device rather then checking the ACPI _HRV field.

This is more reliable (some CHT devices have been found where the _HRV
for the PMIC is 2 rather then 3) and leads to a nice cleanup.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20211018143324.296961-4-hdegoede@redhat.com

drivers/input/misc/axp20x-pek.c

@@ -22,6 +22,7 @@
 #include <linux/kernel.h>
 #include <linux/mfd/axp20x.h>
 #include <linux/module.h>
+#include <linux/platform_data/x86/soc.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
@@ -255,41 +256,24 @@ static int axp20x_pek_probe_input_device(struct axp20x_pek *axp20x_pek,
 	return 0;
 }
 
-#ifdef CONFIG_ACPI
-static bool axp20x_pek_should_register_input(struct axp20x_pek *axp20x_pek,
-					     struct platform_device *pdev)
+static bool axp20x_pek_should_register_input(struct axp20x_pek *axp20x_pek)
 {
-	unsigned long long hrv = 0;
-	acpi_status status;
-
 	if (IS_ENABLED(CONFIG_INPUT_SOC_BUTTON_ARRAY) &&
 	    axp20x_pek->axp20x->variant == AXP288_ID) {
-		status = acpi_evaluate_integer(ACPI_HANDLE(pdev->dev.parent),
-					       "_HRV", NULL, &hrv);
-		if (ACPI_FAILURE(status))
-			dev_err(&pdev->dev, "Failed to get PMIC hardware revision\n");
-
 		/*
 		 * On Cherry Trail platforms (hrv == 3), do not register the
 		 * input device if there is an "INTCFD9" or "ACPI0011" gpio
 		 * button ACPI device, as that handles the power button too,
 		 * and otherwise we end up reporting all presses twice.
 		 */
-		if (hrv == 3 && (acpi_dev_present("INTCFD9", NULL, -1) ||
+		if (soc_intel_is_cht() &&
+				(acpi_dev_present("INTCFD9", NULL, -1) ||
 				 acpi_dev_present("ACPI0011", NULL, -1)))
 			return false;
-
 	}
 
 	return true;
 }
-#else
-static bool axp20x_pek_should_register_input(struct axp20x_pek *axp20x_pek,
-					     struct platform_device *pdev)
-{
-	return true;
-}
-#endif
 
 static int axp20x_pek_probe(struct platform_device *pdev)
 {
@@ -321,7 +305,7 @@ static int axp20x_pek_probe(struct platform_device *pdev)
 	axp20x_pek->irq_dbf = regmap_irq_get_virq(
 			axp20x_pek->axp20x->regmap_irqc, axp20x_pek->irq_dbf);
 
-	if (axp20x_pek_should_register_input(axp20x_pek, pdev)) {
+	if (axp20x_pek_should_register_input(axp20x_pek)) {
 		error = axp20x_pek_probe_input_device(axp20x_pek, pdev);
 		if (error)
 			return error;