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platform/x86: x86-android-tablets: Create a platform_device from module_init()

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Create a platform_device from module_init() and change
x86_android_tablet_init() / cleanup() into platform_device
probe() and remove() functions.

This is a preparation patch for refactoring x86_android_tablet_get_gpiod()
to no longer use gpiolib private functions like gpiochip_find().

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230909141816.58358-6-hdegoede@redhat.com
This commit is contained in:
Hans de Goede 2023-09-09 16:18:13 +02:00
parent 56e1f53b58
commit 8b57d33a6f
1 changed files with 38 additions and 13 deletions
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51
drivers/platform/x86/x86-android-tablets/core.c
View File

@ -25,6 +25,8 @@
#include "../../../gpio/gpiolib.h"
#include "../../../gpio/gpiolib-acpi.h"
static struct platform_device *x86_android_tablet_device;
static int gpiochip_find_match_label(struct gpio_chip *gc, void *data)
{
return gc->label && !strcmp(gc->label, data);
@ -224,7 +226,7 @@ put_ctrl_adev:
return ret;
}
static void x86_android_tablet_cleanup(void)
static void x86_android_tablet_remove(struct platform_device *pdev)
{
int i;
@ -255,7 +257,7 @@ static void x86_android_tablet_cleanup(void)
software_node_unregister(bat_swnode);
}
static __init int x86_android_tablet_init(void)
static __init int x86_android_tablet_probe(struct platform_device *pdev)
{
const struct x86_dev_info *dev_info;
const struct dmi_system_id *id;
@ -266,6 +268,8 @@ static __init int x86_android_tablet_init(void)
return -ENODEV;
dev_info = id->driver_data;
/* Allow x86_android_tablet_device use before probe() exits */
x86_android_tablet_device = pdev;
/*
* Since this runs from module_init() it cannot use -EPROBE_DEFER,
@ -288,7 +292,7 @@ static __init int x86_android_tablet_init(void)
if (dev_info->init) {
ret = dev_info->init();
if (ret < 0) {
x86_android_tablet_cleanup();
x86_android_tablet_remove(pdev);
return ret;
}
exit_handler = dev_info->exit;
@ -296,7 +300,7 @@ static __init int x86_android_tablet_init(void)
i2c_clients = kcalloc(dev_info->i2c_client_count, sizeof(*i2c_clients), GFP_KERNEL);
if (!i2c_clients) {
x86_android_tablet_cleanup();
x86_android_tablet_remove(pdev);
return -ENOMEM;
}
@ -304,7 +308,7 @@ static __init int x86_android_tablet_init(void)
for (i = 0; i < i2c_client_count; i++) {
ret = x86_instantiate_i2c_client(dev_info, i);
if (ret < 0) {
x86_android_tablet_cleanup();
x86_android_tablet_remove(pdev);
return ret;
}
}
@ -312,7 +316,7 @@ static __init int x86_android_tablet_init(void)
/* + 1 to make space for (optional) gpio_keys_button pdev */
pdevs = kcalloc(dev_info->pdev_count + 1, sizeof(*pdevs), GFP_KERNEL);
if (!pdevs) {
x86_android_tablet_cleanup();
x86_android_tablet_remove(pdev);
return -ENOMEM;
}
@ -320,14 +324,14 @@ static __init int x86_android_tablet_init(void)
for (i = 0; i < pdev_count; i++) {
pdevs[i] = platform_device_register_full(&dev_info->pdev_info[i]);
if (IS_ERR(pdevs[i])) {
x86_android_tablet_cleanup();
x86_android_tablet_remove(pdev);
return PTR_ERR(pdevs[i]);
}
}
serdevs = kcalloc(dev_info->serdev_count, sizeof(*serdevs), GFP_KERNEL);
if (!serdevs) {
x86_android_tablet_cleanup();
x86_android_tablet_remove(pdev);
return -ENOMEM;
}
@ -335,7 +339,7 @@ static __init int x86_android_tablet_init(void)
for (i = 0; i < serdev_count; i++) {
ret = x86_instantiate_serdev(&dev_info->serdev_info[i], i);
if (ret < 0) {
x86_android_tablet_cleanup();
x86_android_tablet_remove(pdev);
return ret;
}
}
@ -346,7 +350,7 @@ static __init int x86_android_tablet_init(void)
buttons = kcalloc(dev_info->gpio_button_count, sizeof(*buttons), GFP_KERNEL);
if (!buttons) {
x86_android_tablet_cleanup();
x86_android_tablet_remove(pdev);
return -ENOMEM;
}
@ -354,7 +358,7 @@ static __init int x86_android_tablet_init(void)
ret = x86_android_tablet_get_gpiod(dev_info->gpio_button[i].chip,
dev_info->gpio_button[i].pin, &gpiod);
if (ret < 0) {
x86_android_tablet_cleanup();
x86_android_tablet_remove(pdev);
return ret;
}
@ -369,7 +373,7 @@ static __init int x86_android_tablet_init(void)
PLATFORM_DEVID_AUTO,
&pdata, sizeof(pdata));
if (IS_ERR(pdevs[pdev_count])) {
x86_android_tablet_cleanup();
x86_android_tablet_remove(pdev);
return PTR_ERR(pdevs[pdev_count]);
}
pdev_count++;
@ -378,8 +382,29 @@ static __init int x86_android_tablet_init(void)
return 0;
}
static struct platform_driver x86_android_tablet_driver = {
.driver = {
.name = KBUILD_MODNAME,
},
.remove_new = x86_android_tablet_remove,
};
static int __init x86_android_tablet_init(void)
{
x86_android_tablet_device = platform_create_bundle(&x86_android_tablet_driver,
x86_android_tablet_probe,
NULL, 0, NULL, 0);
return PTR_ERR_OR_ZERO(x86_android_tablet_device);
}
module_init(x86_android_tablet_init);
module_exit(x86_android_tablet_cleanup);
static void __exit x86_android_tablet_exit(void)
{
platform_device_unregister(x86_android_tablet_device);
platform_driver_unregister(&x86_android_tablet_driver);
}
module_exit(x86_android_tablet_exit);
MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
MODULE_DESCRIPTION("X86 Android tablets DSDT fixups driver");