[PATCH 3/4] platform/x86: x86-android-tablets: convert wm1502 devices to GPIO references

[Dmitry Torokhov]

Now that gpiolib supports software nodes to describe GPIOs, switch the
driver away from using GPIO lookup tables for wm1502 devices to using
PROPERTY_ENTRY_GPIO().

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---
 drivers/platform/x86/x86-android-tablets.c | 64 +++++++++++++++++-----
 1 file changed, 50 insertions(+), 14 deletions(-)

diff --git a/drivers/platform/x86/x86-android-tablets.c b/drivers/platform/x86/x86-android-tablets.c
index f7f80237cfa9..02ee793a934e 100644
--- a/drivers/platform/x86/x86-android-tablets.c
+++ b/drivers/platform/x86/x86-android-tablets.c
@@ -874,19 +874,37 @@ static const struct platform_device_info lenovo_yoga_tab2_830_1050_pdevs[] __ini
 
 #define LENOVO_YOGA_TAB2_830_1050_CODEC_NAME "spi-10WM5102:00"
 
-static struct gpiod_lookup_table lenovo_yoga_tab2_830_1050_codec_gpios = {
-	.dev_id = LENOVO_YOGA_TAB2_830_1050_CODEC_NAME,
-	.table = {
-		GPIO_LOOKUP("gpio_crystalcove", 3, "reset", GPIO_ACTIVE_HIGH),
-		GPIO_LOOKUP("INT33FC:01", 23, "wlf,ldoena", GPIO_ACTIVE_HIGH),
-		GPIO_LOOKUP("arizona", 2, "wlf,spkvdd-ena", GPIO_ACTIVE_HIGH),
-		GPIO_LOOKUP("arizona", 4, "wlf,micd-pol", GPIO_ACTIVE_LOW),
-		{ }
-	},
+static const struct software_node lenovo_yoga_tab2_830_1050_crystalcove = {
+	.name = "gpio_crystalcove",
+};
+
+static const struct software_node lenovo_yoga_tab2_830_1050_arizona = {
+	.name = "arizona",
+};
+
+static const struct property_entry lenovo_yoga_tab2_830_1050_wm1502_props[] = {
+	PROPERTY_ENTRY_GPIO("reset-gpios",
+			    &lenovo_yoga_tab2_830_1050_crystalcove,
+			    3, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("wlf,ldoena-gpios",
+			     &int33fc_gpiochip_nodes[1], 23, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("wlf,spkvdd-ena-gpios",
+			    &lenovo_yoga_tab2_830_1050_arizona,
+			    2, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("wlf,micd-pol-gpios",
+			    &lenovo_yoga_tab2_830_1050_arizona,
+			    4, GPIO_ACTIVE_HIGH),
+	{ }
+};
+
+static const struct software_node lenovo_yoga_tab2_830_1050_wm5102 = {
+	.properties = lenovo_yoga_tab2_830_1050_wm1502_props,
 };
 
-static struct gpiod_lookup_table * const lenovo_yoga_tab2_830_1050_gpios[] = {
-	&lenovo_yoga_tab2_830_1050_codec_gpios,
+static const struct software_node *lenovo_yoga_tab2_830_1050_swnodes[] = {
+	&lenovo_yoga_tab2_830_1050_crystalcove,
+	&lenovo_yoga_tab2_830_1050_arizona,
+	&lenovo_yoga_tab2_830_1050_wm5102,
 	NULL
 };
 
@@ -898,7 +916,6 @@ static struct x86_dev_info lenovo_yoga_tab2_830_1050_info __initdata = {
 	/* i2c_client_count gets set by lenovo_yoga_tab2_830_1050_init() */
 	.pdev_info = lenovo_yoga_tab2_830_1050_pdevs,
 	.pdev_count = ARRAY_SIZE(lenovo_yoga_tab2_830_1050_pdevs),
-	.gpiod_lookup_tables = lenovo_yoga_tab2_830_1050_gpios,
 	.bat_swnode = &generic_lipo_hv_4v35_battery_node,
 	.modules = bq24190_modules,
 	.invalid_aei_gpiochip = "INT33FC:02",
@@ -955,6 +972,7 @@ static const struct pinctrl_map lenovo_yoga_tab2_830_1050_codec_pinctrl_map =
 	PIN_MAP_MUX_GROUP(LENOVO_YOGA_TAB2_830_1050_CODEC_NAME, "codec_32khz_clk",
 			  "INT33FC:02", "pmu_clk2_grp", "pmu_clk");
 
+static struct device *lenovo_yoga_tab2_830_1050_codec_dev;
 static struct pinctrl *lenovo_yoga_tab2_830_1050_codec_pinctrl;
 static struct sys_off_handler *lenovo_yoga_tab2_830_1050_sys_off_handler;
 
@@ -981,12 +999,24 @@ static int __init lenovo_yoga_tab2_830_1050_init_codec(void)
 		goto err_unregister_mappings;
 	}
 
-	/* We're done with the codec_dev now */
-	put_device(codec_dev);
+	ret = software_node_register_node_group(lenovo_yoga_tab2_830_1050_swnodes);
+	if (ret) {
+		ret = dev_err_probe(codec_dev, ret, "registering software nodes\n");
+		goto err_unregister_mappings;
+	}
 
+	ret = device_add_software_node(codec_dev, &lenovo_yoga_tab2_830_1050_wm5102);
+	if (ret) {
+		ret = dev_err_probe(codec_dev, ret, "adding software node\n");
+		goto err_unregister_swnodes;
+	}
+
+	lenovo_yoga_tab2_830_1050_codec_dev = codec_dev;
 	lenovo_yoga_tab2_830_1050_codec_pinctrl = pinctrl;
 	return 0;
 
+err_unregister_swnodes:
+	software_node_unregister_node_group(lenovo_yoga_tab2_830_1050_swnodes);
 err_unregister_mappings:
 	pinctrl_unregister_mappings(&lenovo_yoga_tab2_830_1050_codec_pinctrl_map);
 err_put_device:
@@ -1034,6 +1064,12 @@ static void lenovo_yoga_tab2_830_1050_exit(void)
 {
 	unregister_sys_off_handler(lenovo_yoga_tab2_830_1050_sys_off_handler);
 
+	if (lenovo_yoga_tab2_830_1050_codec_dev) {
+		device_remove_software_node(lenovo_yoga_tab2_830_1050_codec_dev);
+		put_device(lenovo_yoga_tab2_830_1050_codec_dev);
+		software_node_unregister_node_group(lenovo_yoga_tab2_830_1050_swnodes);
+	}
+
 	if (lenovo_yoga_tab2_830_1050_codec_pinctrl) {
 		pinctrl_put(lenovo_yoga_tab2_830_1050_codec_pinctrl);
 		pinctrl_unregister_mappings(&lenovo_yoga_tab2_830_1050_codec_pinctrl_map);
-- 
2.40.1.606.ga4b1b128d6-goog