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b1a981bd55
There's only two functions called from that: drm_kms_helper_poll_fini() and udl_free_urb_list(). Both of these are also called from the ubs_driver->disconnect hook, so entirely pointless to do the same again in the ->release hook. Furthermore by the time we clean up the drm_driver we really shouldn't be touching hardware anymore, so stopping the poll worker and freeing the urb allocations in ->disconnect is the right thing to do. Now disconnect still cleans things up before unregistering the driver, but that's a different issue. v2: Use _fini, not _disable in unplug, motivated by discussions with Thomas. _disable/_enable are for suspend/resume. Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Dave Airlie <airlied@redhat.com> Cc: Sean Paul <sean@poorly.run> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Emil Velikov <emil.l.velikov@gmail.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: "Noralf Trønnes" <noralf@tronnes.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200323144950.3018436-51-daniel.vetter@ffwll.ch
109 lines
2.9 KiB
C
109 lines
2.9 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 delayed_work release_urb_work;
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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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spinlock_t lock;
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struct semaphore limit_sem;
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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 usb_device *udev;
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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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/* 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(struct drm_device *dev);
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int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
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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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struct drm_gem_object *udl_driver_gem_create_object(struct drm_device *dev,
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size_t size);
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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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