e25d595426
At both suspend and disconnect, we should rather cancel the pending URBs immediately. For the suspend case, the display will be turned off, so it makes no sense to process the rendering. And for the disconnect case, the device may be no longer accessible, hence we shouldn't do any submission. Tested-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20220804075826.27036-4-tiwai@suse.de
119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 Red Hat
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*
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* based in parts on udlfb.c:
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* Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
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* Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
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* Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
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*/
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#ifndef UDL_DRV_H
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#define UDL_DRV_H
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#include <linux/mm_types.h>
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#include <linux/usb.h>
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#include <drm/drm_device.h>
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#include <drm/drm_framebuffer.h>
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#include <drm/drm_gem.h>
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#include <drm/drm_simple_kms_helper.h>
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struct drm_mode_create_dumb;
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#define DRIVER_NAME "udl"
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#define DRIVER_DESC "DisplayLink"
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#define DRIVER_DATE "20120220"
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#define DRIVER_MAJOR 0
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#define DRIVER_MINOR 0
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#define DRIVER_PATCHLEVEL 1
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struct udl_device;
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struct urb_node {
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struct list_head entry;
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struct udl_device *dev;
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struct urb *urb;
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};
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struct urb_list {
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struct list_head list;
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struct list_head in_flight;
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spinlock_t lock;
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wait_queue_head_t sleep;
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int available;
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int count;
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size_t size;
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};
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struct udl_device {
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struct drm_device drm;
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struct device *dev;
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struct device *dmadev;
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struct drm_simple_display_pipe display_pipe;
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struct mutex gem_lock;
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int sku_pixel_limit;
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struct urb_list urbs;
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char mode_buf[1024];
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uint32_t mode_buf_len;
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};
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#define to_udl(x) container_of(x, struct udl_device, drm)
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static inline struct usb_device *udl_to_usb_device(struct udl_device *udl)
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{
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return interface_to_usbdev(to_usb_interface(udl->drm.dev));
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}
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/* modeset */
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int udl_modeset_init(struct drm_device *dev);
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struct drm_connector *udl_connector_init(struct drm_device *dev);
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struct urb *udl_get_urb_timeout(struct drm_device *dev, long timeout);
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#define GET_URB_TIMEOUT HZ
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static inline struct urb *udl_get_urb(struct drm_device *dev)
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{
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return udl_get_urb_timeout(dev, GET_URB_TIMEOUT);
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}
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int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
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int udl_sync_pending_urbs(struct drm_device *dev);
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void udl_kill_pending_urbs(struct drm_device *dev);
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void udl_urb_completion(struct urb *urb);
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int udl_init(struct udl_device *udl);
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int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
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const char *front, char **urb_buf_ptr,
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u32 byte_offset, u32 device_byte_offset, u32 byte_width);
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int udl_drop_usb(struct drm_device *dev);
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#define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */
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#define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */
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#define CMD_WRITE_COPY8 "\xAF\x62" /**< 8 bit copy command. */
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#define CMD_WRITE_RLX8 "\xAF\x63" /**< 8 bit extended run length command. */
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#define CMD_WRITE_RAW16 "\xAF\x68" /**< 16 bit raw write command. */
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#define CMD_WRITE_RL16 "\xAF\x69" /**< 16 bit run length command. */
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#define CMD_WRITE_COPY16 "\xAF\x6A" /**< 16 bit copy command. */
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#define CMD_WRITE_RLX16 "\xAF\x6B" /**< 16 bit extended run length command. */
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/* On/Off for driving the DisplayLink framebuffer to the display */
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#define UDL_REG_BLANK_MODE 0x1f
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#define UDL_BLANK_MODE_ON 0x00 /* hsync and vsync on, visible */
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#define UDL_BLANK_MODE_BLANKED 0x01 /* hsync and vsync on, blanked */
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#define UDL_BLANK_MODE_VSYNC_OFF 0x03 /* vsync off, blanked */
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#define UDL_BLANK_MODE_HSYNC_OFF 0x05 /* hsync off, blanked */
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#define UDL_BLANK_MODE_POWERDOWN 0x07 /* powered off; requires modeset */
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#endif
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