From fb87a811a4c232e2af8d746dc75330cbe5b0780c Mon Sep 17 00:00:00 2001 From: Henrique de Moraes Holschuh Date: Sat, 25 Nov 2006 16:35:09 -0200 Subject: ACPI: ibm-acpi: backlight device cleanup This patch cleans up the recently added backlight device support by Holger Macht to fit well with the rest of the code, using the ibms struct as the other "subdrivers" in ibm-acpi. Signed-off-by: Henrique de Moraes Holschuh --- drivers/acpi/ibm_acpi.c | 50 ++++++++++++++++++++++++++++++------------------- 1 file changed, 31 insertions(+), 19 deletions(-) diff --git a/drivers/acpi/ibm_acpi.c b/drivers/acpi/ibm_acpi.c index fbb4970ce16..36e2667d865 100644 --- a/drivers/acpi/ibm_acpi.c +++ b/drivers/acpi/ibm_acpi.c @@ -397,7 +397,7 @@ struct ibm_struct { static struct proc_dir_entry *proc_dir = NULL; -static struct backlight_device *ibm_backlight_device; +static struct backlight_device *ibm_backlight_device = NULL; #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off") #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") @@ -1639,6 +1639,7 @@ static int brightness_get(struct backlight_device *bd) return -EIO; level &= 0x7; + return level; } @@ -1713,6 +1714,33 @@ static int brightness_update_status(struct backlight_device *bd) return brightness_set(bd->props->brightness); } +static struct backlight_properties ibm_backlight_data = { + .owner = THIS_MODULE, + .get_brightness = brightness_get, + .update_status = brightness_update_status, + .max_brightness = 7, +}; + +static int brightness_init(void) +{ + ibm_backlight_device = backlight_device_register("ibm", NULL, + &ibm_backlight_data); + if (IS_ERR(ibm_backlight_device)) { + printk(IBM_ERR "Could not register backlight device\n"); + return PTR_ERR(ibm_backlight_device); + } + + return 0; +} + +static void brightness_exit(void) +{ + if (ibm_backlight_device) { + backlight_device_unregister(ibm_backlight_device); + ibm_backlight_device = NULL; + } +} + static int volume_offset = 0x30; static int volume_read(char *p) @@ -2377,6 +2405,8 @@ static struct ibm_struct ibms[] = { .name = "brightness", .read = brightness_read, .write = brightness_write, + .init = brightness_init, + .exit = brightness_exit, }, { .name = "volume", @@ -2642,20 +2672,10 @@ IBM_PARAM(brightness); IBM_PARAM(volume); IBM_PARAM(fan); -static struct backlight_properties ibm_backlight_data = { - .owner = THIS_MODULE, - .get_brightness = brightness_get, - .update_status = brightness_update_status, - .max_brightness = 7, -}; - static void acpi_ibm_exit(void) { int i; - if (ibm_backlight_device) - backlight_device_unregister(ibm_backlight_device); - for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--) ibm_exit(&ibms[i]); @@ -2758,14 +2778,6 @@ static int __init acpi_ibm_init(void) } } - ibm_backlight_device = backlight_device_register("ibm", NULL, - &ibm_backlight_data); - if (IS_ERR(ibm_backlight_device)) { - printk(IBM_ERR "Could not register ibm backlight device\n"); - ibm_backlight_device = NULL; - acpi_ibm_exit(); - } - return 0; } -- cgit v1.2.3