diff options
Diffstat (limited to 'drivers/acpi/ibm_acpi.c')
| -rw-r--r-- | drivers/acpi/ibm_acpi.c | 47 |
1 files changed, 42 insertions, 5 deletions
diff --git a/drivers/acpi/ibm_acpi.c b/drivers/acpi/ibm_acpi.c index 4cc534e36e8..dc1096608f4 100644 --- a/drivers/acpi/ibm_acpi.c +++ b/drivers/acpi/ibm_acpi.c @@ -86,6 +86,7 @@ #include <linux/proc_fs.h> #include <linux/backlight.h> +#include <linux/fb.h> #include <asm/uaccess.h> #include <linux/dmi.h> @@ -157,6 +158,7 @@ IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */ "\\_SB.PCI.ISA.SLCE", /* 570 */ ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */ #endif +#ifdef CONFIG_ACPI_IBM_BAY IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */ "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */ "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */ @@ -174,6 +176,7 @@ IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */ IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */ "_EJ0", /* 770x */ ); /* all others */ +#endif /* CONFIG_ACPI_IBM_BAY */ /* don't list other alternatives as we install a notify handler on the 570 */ IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ @@ -1044,6 +1047,7 @@ static int light_write(char *buf) return 0; } +#if defined(CONFIG_ACPI_IBM_DOCK) || defined(CONFIG_ACPI_IBM_BAY) static int _sta(acpi_handle handle) { int status; @@ -1053,6 +1057,7 @@ static int _sta(acpi_handle handle) return status; } +#endif #ifdef CONFIG_ACPI_IBM_DOCK #define dock_docked() (_sta(dock_handle) & 1) @@ -1119,6 +1124,7 @@ static void dock_notify(struct ibm_struct *ibm, u32 event) } #endif +#ifdef CONFIG_ACPI_IBM_BAY static int bay_status_supported; static int bay_status2_supported; static int bay_eject_supported; @@ -1194,6 +1200,7 @@ static void bay_notify(struct ibm_struct *ibm, u32 event) { acpi_bus_generate_event(ibm->device, event, 0); } +#endif /* CONFIG_ACPI_IBM_BAY */ static int cmos_read(char *p) { @@ -1701,7 +1708,10 @@ static int brightness_write(char *buf) static int brightness_update_status(struct backlight_device *bd) { - return brightness_set(bd->props.brightness); + return brightness_set( + (bd->props.fb_blank == FB_BLANK_UNBLANK && + bd->props.power == FB_BLANK_UNBLANK) ? + bd->props.brightness : 0); } static struct backlight_ops ibm_backlight_data = { @@ -1711,6 +1721,12 @@ static struct backlight_ops ibm_backlight_data = { static int brightness_init(void) { + int b; + + b = brightness_get(NULL); + if (b < 0) + return b; + ibm_backlight_device = backlight_device_register("ibm", NULL, NULL, &ibm_backlight_data); if (IS_ERR(ibm_backlight_device)) { @@ -1718,7 +1734,9 @@ static int brightness_init(void) return PTR_ERR(ibm_backlight_device); } - ibm_backlight_device->props.max_brightness = 7; + ibm_backlight_device->props.max_brightness = 7; + ibm_backlight_device->props.brightness = b; + backlight_update_status(ibm_backlight_device); return 0; } @@ -2353,6 +2371,7 @@ static struct ibm_struct ibms[] = { .type = ACPI_SYSTEM_NOTIFY, }, #endif +#ifdef CONFIG_ACPI_IBM_BAY { .name = "bay", .init = bay_init, @@ -2362,6 +2381,7 @@ static struct ibm_struct ibms[] = { .handle = &bay_handle, .type = ACPI_SYSTEM_NOTIFY, }, +#endif /* CONFIG_ACPI_IBM_BAY */ { .name = "cmos", .read = cmos_read, @@ -2487,7 +2507,7 @@ static int __init setup_notify(struct ibm_struct *ibm) ret = acpi_bus_get_device(*ibm->handle, &ibm->device); if (ret < 0) { printk(IBM_ERR "%s device not present\n", ibm->name); - return 0; + return -ENODEV; } acpi_driver_data(ibm->device) = ibm; @@ -2496,8 +2516,13 @@ static int __init setup_notify(struct ibm_struct *ibm) status = acpi_install_notify_handler(*ibm->handle, ibm->type, dispatch_notify, ibm); if (ACPI_FAILURE(status)) { - printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n", - ibm->name, status); + if (status == AE_ALREADY_EXISTS) { + printk(IBM_NOTICE "another device driver is already handling %s events\n", + ibm->name); + } else { + printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n", + ibm->name, status); + } return -ENODEV; } ibm->notify_installed = 1; @@ -2533,6 +2558,8 @@ static int __init register_driver(struct ibm_struct *ibm) return ret; } +static void ibm_exit(struct ibm_struct *ibm); + static int __init ibm_init(struct ibm_struct *ibm) { int ret; @@ -2574,6 +2601,12 @@ static int __init ibm_init(struct ibm_struct *ibm) if (ibm->notify) { ret = setup_notify(ibm); + if (ret == -ENODEV) { + printk(IBM_NOTICE "disabling subdriver %s\n", + ibm->name); + ibm_exit(ibm); + return 0; + } if (ret < 0) return ret; } @@ -2647,7 +2680,9 @@ IBM_PARAM(light); #ifdef CONFIG_ACPI_IBM_DOCK IBM_PARAM(dock); #endif +#ifdef CONFIG_ACPI_IBM_BAY IBM_PARAM(bay); +#endif /* CONFIG_ACPI_IBM_BAY */ IBM_PARAM(cmos); IBM_PARAM(led); IBM_PARAM(beep); @@ -2723,12 +2758,14 @@ static int __init acpi_ibm_init(void) IBM_HANDLE_INIT(dock); #endif IBM_HANDLE_INIT(pci); +#ifdef CONFIG_ACPI_IBM_BAY IBM_HANDLE_INIT(bay); if (bay_handle) IBM_HANDLE_INIT(bay_ej); IBM_HANDLE_INIT(bay2); if (bay2_handle) IBM_HANDLE_INIT(bay2_ej); +#endif /* CONFIG_ACPI_IBM_BAY */ IBM_HANDLE_INIT(beep); IBM_HANDLE_INIT(ecrd); IBM_HANDLE_INIT(ecwr); |