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Subject[PATCH 27/28] asus-laptop: use device_create_file() instead of platform_group
Date
There is two reason to do that:
- we don't want a "gps" file if the model doesn't have a gps
- we don't want to use global variables anymore

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
---
drivers/platform/x86/asus-laptop.c | 166 ++++++++++++++++++------------------
1 files changed, 84 insertions(+), 82 deletions(-)
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index ae53026..d0d117b 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -918,6 +918,8 @@ static ssize_t show_disp(struct device *dev,
{
struct asus_laptop *asus = dev_get_drvdata(dev);

+ if (!display_get_handle)
+ return -ENODEV;
return sprintf(buf, "%d\n", read_display(asus));
}

@@ -1191,77 +1193,113 @@ static void asus_acpi_notify(struct acpi_device *device, u32 event)
asus_input_notify(asus, event);
}

-#define ASUS_CREATE_DEVICE_ATTR(_name) \
- struct device_attribute dev_attr_##_name = { \
- .attr = { \
- .name = __stringify(_name), \
- .mode = 0 }, \
- .show = NULL, \
- .store = NULL, \
+static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL);
+static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan);
+static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR, show_bluetooth,
+ store_bluetooth);
+static DEVICE_ATTR(display, S_IRUGO | S_IWUSR, show_disp, store_disp);
+static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd);
+static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl);
+static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw);
+static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps);
+
+static void asus_sysfs_exit(struct asus_laptop *asus)
+{
+ struct platform_device *device = asus->platform_device;
+
+ device_remove_file(&device->dev, &dev_attr_infos);
+ device_remove_file(&device->dev, &dev_attr_wlan);
+ device_remove_file(&device->dev, &dev_attr_bluetooth);
+ device_remove_file(&device->dev, &dev_attr_display);
+ device_remove_file(&device->dev, &dev_attr_ledd);
+ device_remove_file(&device->dev, &dev_attr_ls_switch);
+ device_remove_file(&device->dev, &dev_attr_ls_level);
+ device_remove_file(&device->dev, &dev_attr_gps);
+}
+
+static int asus_sysfs_init(struct asus_laptop *asus)
+{
+ struct platform_device *device = asus->platform_device;
+ int err;
+
+ err = device_create_file(&device->dev, &dev_attr_infos);
+ if (err)
+ return err;
+
+ if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL)) {
+ err = device_create_file(&device->dev, &dev_attr_wlan);
+ if (err)
+ return err;
}

-#define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
- do { \
- dev_attr_##_name.attr.mode = _mode; \
- dev_attr_##_name.show = _show; \
- dev_attr_##_name.store = _store; \
- } while(0)
-
-static ASUS_CREATE_DEVICE_ATTR(infos);
-static ASUS_CREATE_DEVICE_ATTR(wlan);
-static ASUS_CREATE_DEVICE_ATTR(bluetooth);
-static ASUS_CREATE_DEVICE_ATTR(display);
-static ASUS_CREATE_DEVICE_ATTR(ledd);
-static ASUS_CREATE_DEVICE_ATTR(ls_switch);
-static ASUS_CREATE_DEVICE_ATTR(ls_level);
-static ASUS_CREATE_DEVICE_ATTR(gps);
-
-static struct attribute *asuspf_attributes[] = {
- &dev_attr_infos.attr,
- &dev_attr_wlan.attr,
- &dev_attr_bluetooth.attr,
- &dev_attr_display.attr,
- &dev_attr_ledd.attr,
- &dev_attr_ls_switch.attr,
- &dev_attr_ls_level.attr,
- &dev_attr_gps.attr,
- NULL
-};
+ if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL)) {
+ err = device_create_file(&device->dev, &dev_attr_bluetooth);
+ if (err)
+ return err;
+ }

-static struct attribute_group platform_attribute_group = {
- .attrs = asuspf_attributes
-};
+ if (!acpi_check_handle(asus->handle, METHOD_SWITCH_DISPLAY, NULL)) {
+ err = device_create_file(&device->dev, &dev_attr_display);
+ if (err)
+ return err;
+ }
+
+ if (!acpi_check_handle(asus->handle, METHOD_LEDD, NULL)) {
+ err = device_create_file(&device->dev, &dev_attr_ledd);
+ if (err)
+ return err;
+ }
+
+ if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
+ !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
+ err = device_create_file(&device->dev, &dev_attr_ls_switch);
+ if (err)
+ return err;
+ err = device_create_file(&device->dev, &dev_attr_ls_level);
+ if (err)
+ return err;
+ }
+
+ if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
+ !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
+ !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) {
+ err = device_create_file(&device->dev, &dev_attr_gps);
+ if (err)
+ return err;
+ }
+
+ return err;
+}

static int asus_platform_init(struct asus_laptop *asus)
{
- int result;
+ int err;

asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
if (!asus->platform_device)
return -ENOMEM;
platform_set_drvdata(asus->platform_device, asus);

- result = platform_device_add(asus->platform_device);
- if (result)
+ err = platform_device_add(asus->platform_device);
+ if (err)
goto fail_platform_device;

- result = sysfs_create_group(&asus->platform_device->dev.kobj,
- &platform_attribute_group);
- if (result)
+ err = asus_sysfs_init(asus);
+ if (err)
goto fail_sysfs;
return 0;

fail_sysfs:
+ asus_sysfs_exit(asus);
platform_device_del(asus->platform_device);
fail_platform_device:
platform_device_put(asus->platform_device);
- return result;
+ return err;
}

static void asus_platform_exit(struct asus_laptop *asus)
{
- sysfs_remove_group(&asus->platform_device->dev.kobj,
- &platform_attribute_group);
+ asus_sysfs_exit(asus);
platform_device_unregister(asus->platform_device);
}

@@ -1272,40 +1310,6 @@ static struct platform_driver platform_driver = {
}
};

-static void asus_laptop_add_fs(struct asus_laptop *asus)
-{
- ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
-
- if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL))
- ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan);
-
- if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL))
- ASUS_SET_DEVICE_ATTR(bluetooth, 0644,
- show_bluetooth, store_bluetooth);
-
- if (!acpi_check_handle(asus->handle, METHOD_SWITCH_DISPLAY, NULL)) {
- if (display_get_handle)
- ASUS_SET_DEVICE_ATTR(display, 0644, show_disp,
- store_disp);
- else
- ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
- }
-
- if (!acpi_check_handle(asus->handle, METHOD_LEDD, NULL))
- ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
-
- if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
- !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
- ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
- ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
- }
-
- if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
- !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
- !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
- ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps);
-}
-
static int asus_handle_init(char *name, acpi_handle * handle,
char **paths, int num_paths)
{
@@ -1435,8 +1439,6 @@ static int __devinit asus_acpi_init(struct asus_laptop *asus)
if (result)
return result;

- asus_laptop_add_fs(asus);
-
/* WLED and BLED are on by default */
if (bluetooth_status >= 0)
asus_bluetooth_set(asus, !!bluetooth_status);
--
1.6.6.1


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