mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-01-17 07:13:58 -05:00
Code Issues Packages Projects Releases Wiki Activity

drm/udl: Add reset_resume

Browse Source 
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
This commit is contained in:
Thomas Zimmermann
2022-09-08 11:51:05 +02:00
parent 6d6e732835
commit 1ceef996c9
3 changed files with 13 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/gpu/drm/udl/udl_drv.c
View File

@@ -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);

1
drivers/gpu/drm/udl/udl_drv.h
View File

@@ -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. */

2
drivers/gpu/drm/udl/udl_main.c
View File

@@ -92,7 +92,7 @@ static int udl_parse_vendor_descriptor(struct udl_device *udl)
/*
* 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,