platform/x86: x86-android-tablets: Share lp855x_platform_data between different models

Various Lenovo models use a TI LP8557 LED backlight controller and
the necessary platform_data is the same for the different models.

Currently there are 2 identical copies and the upcoming support for
the Lenovo Yoga Book X90F/L would add a 3th identical copy.

Move to sharing the lp855x_platform_data between different models
to avoid this duplication.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230401150737.597417-2-hdegoede@redhat.com

drivers/platform/x86/x86-android-tablets/lenovo.c

@@ -24,6 +24,20 @@
 #include "shared-psy-info.h"
 #include "x86-android-tablets.h"
 
+/*
+ * Various Lenovo models use a TI LP8557 LED backlight controller with its PWM
+ * input connected to a PWM output coming from the LCD panel's controller.
+ * The Android kernels have a hack in the i915 driver to write a non-standard
+ * panel specific DSI register to set the duty-cycle of the LCD's PWM output.
+ *
+ * To avoid having to have a similar hack in the mainline kernel program the
+ * LP8557 to directly set the level and use the lp855x_bl driver for control.
+ */
+static struct lp855x_platform_data lenovo_lp8557_pdata = {
+	.device_control = 0x86,
+	.initial_brightness = 128,
+};
+
 /* Lenovo Yoga Book X91F/L Windows tablet needs manual instantiation of the fg client */
 static const struct x86_i2c_client_info lenovo_yogabook_x91_i2c_clients[] __initconst = {
 	{
@@ -72,11 +86,6 @@ static struct x86_gpio_button lenovo_yoga_tab2_830_1050_lid = {
 /* This gets filled by lenovo_yoga_tab2_830_1050_init() */
 static struct rmi_device_platform_data lenovo_yoga_tab2_830_1050_rmi_pdata = { };
 
-static struct lp855x_platform_data lenovo_yoga_tab2_830_1050_lp8557_pdata = {
-	.device_control = 0x86,
-	.initial_brightness = 128,
-};
-
 static const struct x86_i2c_client_info lenovo_yoga_tab2_830_1050_i2c_clients[] __initconst = {
 	{
 		/* bq24292i battery charger */
@@ -125,7 +134,7 @@ static const struct x86_i2c_client_info lenovo_yoga_tab2_830_1050_i2c_clients[]
 			.type = "lp8557",
 			.addr = 0x2c,
 			.dev_name = "lp8557",
-			.platform_data = &lenovo_yoga_tab2_830_1050_lp8557_pdata,
+			.platform_data = &lenovo_lp8557_pdata,
 		},
 		.adapter_path = "\\_SB_.I2C3",
 	},
@@ -343,20 +352,6 @@ static const struct software_node lenovo_yt3_hideep_ts_node = {
 	.properties = lenovo_yt3_hideep_ts_props,
 };
 
-/*
- * The YT3 uses an TI LP8557 LED backlight controller, the LP8557's PWM input is
- * connected to a PWM output coming from the LCD panel's controller. The Android
- * kernel has a hack in the i915 driver to write the non-standard DSI reg 0x51
- * with the desired level to set the duty-cycle of the LCD's PWM output.
- *
- * To avoid having to have a similar hack in the mainline kernel program the
- * LP8557 to directly set the level and use the lp855x_bl driver for control.
- */
-static struct lp855x_platform_data lenovo_yt3_lp8557_pdata = {
-	.device_control = 0x86,
-	.initial_brightness = 128,
-};
-
 static const struct x86_i2c_client_info lenovo_yt3_i2c_clients[] __initconst = {
 	{
 		/* bq27500 fuel-gauge for the flat lipo battery behind the screen */
@@ -414,7 +409,7 @@ static const struct x86_i2c_client_info lenovo_yt3_i2c_clients[] __initconst = {
 			.type = "lp8557",
 			.addr = 0x2c,
 			.dev_name = "lp8557",
-			.platform_data = &lenovo_yt3_lp8557_pdata,
+			.platform_data = &lenovo_lp8557_pdata,
 		},
 		.adapter_path = "\\_SB_.PCI0.I2C1",
 	}