diff options
| -rw-r--r-- | drivers/platform/x86/samsung-laptop.c | 80 |
1 files changed, 76 insertions, 4 deletions
diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c index 4787afdf11dc..e2a34b42ddc1 100644 --- a/drivers/platform/x86/samsung-laptop.c +++ b/drivers/platform/x86/samsung-laptop.c @@ -26,6 +26,9 @@ #include <linux/seq_file.h> #include <linux/debugfs.h> #include <linux/ctype.h> +#if (defined CONFIG_ACPI_VIDEO || defined CONFIG_ACPI_VIDEO_MODULE) +#include <acpi/video.h> +#endif /* * This driver is needed because a number of Samsung laptops do not hook @@ -336,6 +339,7 @@ struct samsung_laptop { struct work_struct kbd_led_work; struct samsung_laptop_debug debug; + struct samsung_quirks *quirks; bool handle_backlight; bool has_stepping_quirk; @@ -343,7 +347,15 @@ struct samsung_laptop { char sdiag[64]; }; +struct samsung_quirks { + bool broken_acpi_video; +}; + +static struct samsung_quirks samsung_unknown = {}; +static struct samsung_quirks samsung_broken_acpi_video = { + .broken_acpi_video = true, +}; static bool force; module_param(force, bool, 0); @@ -1416,6 +1428,14 @@ static int __init samsung_platform_init(struct samsung_laptop *samsung) return 0; } +static struct samsung_quirks *quirks; + +static int __init samsung_dmi_matched(const struct dmi_system_id *d) +{ + quirks = d->driver_data; + return 0; +} + static struct dmi_system_id __initdata samsung_dmi_table[] = { { .matches = { @@ -1445,6 +1465,47 @@ static struct dmi_system_id __initdata samsung_dmi_table[] = { DMI_MATCH(DMI_CHASSIS_TYPE, "14"), /* Sub-Notebook */ }, }, + /* Specific DMI ids for laptop with quirks */ + { + .callback = samsung_dmi_matched, + .ident = "N150P", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), + DMI_MATCH(DMI_PRODUCT_NAME, "N150P"), + DMI_MATCH(DMI_BOARD_NAME, "N150P"), + }, + .driver_data = &samsung_broken_acpi_video, + }, + { + .callback = samsung_dmi_matched, + .ident = "N145P/N250P/N260P", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), + DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"), + DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"), + }, + .driver_data = &samsung_broken_acpi_video, + }, + { + .callback = samsung_dmi_matched, + .ident = "N150/N210/N220", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), + DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"), + DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"), + }, + .driver_data = &samsung_broken_acpi_video, + }, + { + .callback = samsung_dmi_matched, + .ident = "NF110/NF210/NF310", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), + DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"), + DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"), + }, + .driver_data = &samsung_broken_acpi_video, + }, { }, }; MODULE_DEVICE_TABLE(dmi, samsung_dmi_table); @@ -1456,6 +1517,7 @@ static int __init samsung_init(void) struct samsung_laptop *samsung; int ret; + quirks = &samsung_unknown; if (!force && !dmi_check_system(samsung_dmi_table)) return -ENODEV; @@ -1465,12 +1527,21 @@ static int __init samsung_init(void) mutex_init(&samsung->sabi_mutex); samsung->handle_backlight = true; + samsung->quirks = quirks; -#ifdef CONFIG_ACPI + +#if (defined CONFIG_ACPI_VIDEO || defined CONFIG_ACPI_VIDEO_MODULE) /* Don't handle backlight here if the acpi video already handle it */ - if (acpi_video_backlight_support()) - samsung->handle_backlight = false; + if (acpi_video_backlight_support()) { + if (samsung->quirks->broken_acpi_video) { + pr_info("Disabling ACPI video driver\n"); + acpi_video_unregister(); + } else { + samsung->handle_backlight = false; + } + } #endif + ret = samsung_platform_init(samsung); if (ret) goto error_platform; @@ -1481,7 +1552,8 @@ static int __init samsung_init(void) #ifdef CONFIG_ACPI /* Only log that if we are really on a sabi platform */ - if (acpi_video_backlight_support()) + if (acpi_video_backlight_support() && + !samsung->quirks->broken_acpi_video) pr_info("Backlight controlled by ACPI video driver\n"); #endif |