diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2022-09-08 12:51:05 +0300 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-09-10 22:45:45 +0300 |
| commit | 1ceef996c99f1e8a44df8714fcf12822353ac488 (patch) | |
| tree | dba49499f9e52a0791c63c147ff23ff450512daa /drivers/gpu/drm/udl | |
| parent | 6d6e732835db92e66c28dbcf258a7e3d3c71420d (diff) | |
| download | linux-1ceef996c99f1e8a44df8714fcf12822353ac488.tar.xz | |
drm/udl: Add reset_resume
Implement the reset_resume callback of struct usb_driver. Set the
standard channel when called.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908095115.23396-3-tiwai@suse.de
Diffstat (limited to 'drivers/gpu/drm/udl')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_drv.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/udl/udl_drv.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/udl/udl_main.c | 2 |
3 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 5703277c6f52..0ba88e5472a9 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -32,6 +32,16 @@ static int udl_usb_resume(struct usb_interface *interface) return drm_mode_config_helper_resume(dev); } +static int udl_usb_reset_resume(struct usb_interface *interface) +{ + struct drm_device *dev = usb_get_intfdata(interface); + struct udl_device *udl = to_udl(dev); + + udl_select_std_channel(udl); + + return drm_mode_config_helper_resume(dev); +} + /* * FIXME: Dma-buf sharing requires DMA support by the importing device. * This function is a workaround to make USB devices work as well. @@ -140,6 +150,7 @@ static struct usb_driver udl_driver = { .disconnect = udl_usb_disconnect, .suspend = udl_usb_suspend, .resume = udl_usb_resume, + .reset_resume = udl_usb_reset_resume, .id_table = id_table, }; module_usb_driver(udl_driver); diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h index 28aaf75d71cf..37c14b0ff1fc 100644 --- a/drivers/gpu/drm/udl/udl_drv.h +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -95,6 +95,7 @@ int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr, u32 byte_offset, u32 device_byte_offset, u32 byte_width); int udl_drop_usb(struct drm_device *dev); +int udl_select_std_channel(struct udl_device *udl); #define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */ #define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */ diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c index fdafbf8f3c3c..7d1e6bbc165c 100644 --- a/drivers/gpu/drm/udl/udl_main.c +++ b/drivers/gpu/drm/udl/udl_main.c @@ -92,7 +92,7 @@ success: /* * Need to ensure a channel is selected before submitting URBs */ -static int udl_select_std_channel(struct udl_device *udl) +int udl_select_std_channel(struct udl_device *udl) { static const u8 set_def_chn[] = {0x57, 0xCD, 0xDC, 0xA7, 0x1C, 0x88, 0x5E, 0x15, |