diff options
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-picolcd.c | 79 |
1 files changed, 74 insertions, 5 deletions
diff --git a/drivers/hid/hid-picolcd.c b/drivers/hid/hid-picolcd.c index aa6f2e18d4a6..95253b310541 100644 --- a/drivers/hid/hid-picolcd.c +++ b/drivers/hid/hid-picolcd.c @@ -763,7 +763,7 @@ static inline int picolcd_init_framebuffer(struct picolcd_data *data) { return 0; } -static void picolcd_exit_framebuffer(struct picolcd_data *data) +static inline void picolcd_exit_framebuffer(struct picolcd_data *data) { } #define picolcd_fbinfo(d) NULL @@ -852,6 +852,18 @@ static inline int picolcd_resume_backlight(struct picolcd_data *data) return picolcd_set_brightness(data->backlight); } +#ifdef CONFIG_PM +static void picolcd_suspend_backlight(struct picolcd_data *data) +{ + int bl_power = data->lcd_power; + if (!data->backlight) + return; + + data->backlight->props.power = FB_BLANK_POWERDOWN; + picolcd_set_brightness(data->backlight); + data->lcd_power = data->backlight->props.power = bl_power; +} +#endif /* CONFIG_PM */ #else static inline int picolcd_init_backlight(struct picolcd_data *data, struct hid_report *report) @@ -865,6 +877,9 @@ static inline int picolcd_resume_backlight(struct picolcd_data *data) { return 0; } +static inline void picolcd_suspend_backlight(struct picolcd_data *data) +{ +} #endif /* CONFIG_HID_PICOLCD_BACKLIGHT */ #ifdef CONFIG_HID_PICOLCD_LCD @@ -1098,7 +1113,7 @@ static inline int picolcd_init_leds(struct picolcd_data *data, { return 0; } -static void picolcd_exit_leds(struct picolcd_data *data) +static inline void picolcd_exit_leds(struct picolcd_data *data) { } static inline int picolcd_leds_set(struct picolcd_data *data) @@ -2214,9 +2229,18 @@ static void picolcd_exit_devfs(struct picolcd_data *data) mutex_destroy(&data->mutex_flash); } #else -#define picolcd_debug_raw_event(data, hdev, report, raw_data, size) -#define picolcd_init_devfs(data, eeprom_r, eeprom_w, flash_r, flash_w, reset) -static void picolcd_exit_devfs(struct picolcd_data *data) +static inline void picolcd_debug_raw_event(struct picolcd_data *data, + struct hid_device *hdev, struct hid_report *report, + u8 *raw_data, int size) +{ +} +static inline void picolcd_init_devfs(struct picolcd_data *data, + struct hid_report *eeprom_r, struct hid_report *eeprom_w, + struct hid_report *flash_r, struct hid_report *flash_w, + struct hid_report *reset) +{ +} +static inline void picolcd_exit_devfs(struct picolcd_data *data) { } #endif /* CONFIG_DEBUG_FS */ @@ -2259,6 +2283,46 @@ static int picolcd_raw_event(struct hid_device *hdev, return 1; } +#ifdef CONFIG_PM +static int picolcd_suspend(struct hid_device *hdev, pm_message_t message) +{ + if (message.event & PM_EVENT_AUTO) + return 0; + + picolcd_suspend_backlight(hid_get_drvdata(hdev)); + dbg_hid(PICOLCD_NAME " device ready for suspend\n"); + return 0; +} + +static int picolcd_resume(struct hid_device *hdev) +{ + int ret; + ret = picolcd_resume_backlight(hid_get_drvdata(hdev)); + if (ret) + dbg_hid(PICOLCD_NAME " restoring backlight failed: %d\n", ret); + return 0; +} + +static int picolcd_reset_resume(struct hid_device *hdev) +{ + int ret; + ret = picolcd_reset(hdev); + if (ret) + dbg_hid(PICOLCD_NAME " resetting our device failed: %d\n", ret); + ret = picolcd_fb_reset(hid_get_drvdata(hdev), 0); + if (ret) + dbg_hid(PICOLCD_NAME " restoring framebuffer content failed: %d\n", ret); + ret = picolcd_resume_lcd(hid_get_drvdata(hdev)); + if (ret) + dbg_hid(PICOLCD_NAME " restoring lcd failed: %d\n", ret); + ret = picolcd_resume_backlight(hid_get_drvdata(hdev)); + if (ret) + dbg_hid(PICOLCD_NAME " restoring backlight failed: %d\n", ret); + picolcd_leds_set(hid_get_drvdata(hdev)); + return 0; +} +#endif + /* initialize keypad input device */ static int picolcd_init_keys(struct picolcd_data *data, struct hid_report *report) @@ -2544,6 +2608,11 @@ static struct hid_driver picolcd_driver = { .probe = picolcd_probe, .remove = picolcd_remove, .raw_event = picolcd_raw_event, +#ifdef CONFIG_PM + .suspend = picolcd_suspend, + .resume = picolcd_resume, + .reset_resume = picolcd_reset_resume, +#endif }; static int __init picolcd_init(void) |