mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 23:56:44 +07:00
99f55c798f
The udl driver contains an implementation of GEM vmap and mmap operations that is identical to the common SHMEM helper; except that udl's code uses cached pages by default. Convert udl to regular SHMEM helper functions. There's no reason to have udl behave differently from all other SHMEM drivers. The udl driver uses the SHMEM helper to enable caching. v3: * rebased onto Daniel's shmem untangle series v2: * implement .gem_create_object with SHMEM helper Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200609090820.20256-3-tzimmermann@suse.de
106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2012 Red Hat
|
|
*
|
|
* based in parts on udlfb.c:
|
|
* Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
|
|
* Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
|
|
* Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
|
|
*/
|
|
|
|
#ifndef UDL_DRV_H
|
|
#define UDL_DRV_H
|
|
|
|
#include <linux/mm_types.h>
|
|
#include <linux/usb.h>
|
|
|
|
#include <drm/drm_device.h>
|
|
#include <drm/drm_framebuffer.h>
|
|
#include <drm/drm_gem.h>
|
|
#include <drm/drm_simple_kms_helper.h>
|
|
|
|
struct drm_mode_create_dumb;
|
|
|
|
#define DRIVER_NAME "udl"
|
|
#define DRIVER_DESC "DisplayLink"
|
|
#define DRIVER_DATE "20120220"
|
|
|
|
#define DRIVER_MAJOR 0
|
|
#define DRIVER_MINOR 0
|
|
#define DRIVER_PATCHLEVEL 1
|
|
|
|
struct udl_device;
|
|
|
|
struct urb_node {
|
|
struct list_head entry;
|
|
struct udl_device *dev;
|
|
struct delayed_work release_urb_work;
|
|
struct urb *urb;
|
|
};
|
|
|
|
struct urb_list {
|
|
struct list_head list;
|
|
spinlock_t lock;
|
|
struct semaphore limit_sem;
|
|
int available;
|
|
int count;
|
|
size_t size;
|
|
};
|
|
|
|
struct udl_device {
|
|
struct drm_device drm;
|
|
struct device *dev;
|
|
struct usb_device *udev;
|
|
|
|
struct drm_simple_display_pipe display_pipe;
|
|
|
|
struct mutex gem_lock;
|
|
|
|
int sku_pixel_limit;
|
|
|
|
struct urb_list urbs;
|
|
|
|
char mode_buf[1024];
|
|
uint32_t mode_buf_len;
|
|
};
|
|
|
|
#define to_udl(x) container_of(x, struct udl_device, drm)
|
|
|
|
/* modeset */
|
|
int udl_modeset_init(struct drm_device *dev);
|
|
struct drm_connector *udl_connector_init(struct drm_device *dev);
|
|
|
|
struct urb *udl_get_urb(struct drm_device *dev);
|
|
|
|
int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
|
|
void udl_urb_completion(struct urb *urb);
|
|
|
|
int udl_init(struct udl_device *udl);
|
|
|
|
int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
|
|
const char *front, char **urb_buf_ptr,
|
|
u32 byte_offset, u32 device_byte_offset, u32 byte_width);
|
|
|
|
int udl_drop_usb(struct drm_device *dev);
|
|
|
|
#define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */
|
|
#define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */
|
|
#define CMD_WRITE_COPY8 "\xAF\x62" /**< 8 bit copy command. */
|
|
#define CMD_WRITE_RLX8 "\xAF\x63" /**< 8 bit extended run length command. */
|
|
|
|
#define CMD_WRITE_RAW16 "\xAF\x68" /**< 16 bit raw write command. */
|
|
#define CMD_WRITE_RL16 "\xAF\x69" /**< 16 bit run length command. */
|
|
#define CMD_WRITE_COPY16 "\xAF\x6A" /**< 16 bit copy command. */
|
|
#define CMD_WRITE_RLX16 "\xAF\x6B" /**< 16 bit extended run length command. */
|
|
|
|
/* On/Off for driving the DisplayLink framebuffer to the display */
|
|
#define UDL_REG_BLANK_MODE 0x1f
|
|
|
|
#define UDL_BLANK_MODE_ON 0x00 /* hsync and vsync on, visible */
|
|
#define UDL_BLANK_MODE_BLANKED 0x01 /* hsync and vsync on, blanked */
|
|
#define UDL_BLANK_MODE_VSYNC_OFF 0x03 /* vsync off, blanked */
|
|
#define UDL_BLANK_MODE_HSYNC_OFF 0x05 /* hsync off, blanked */
|
|
#define UDL_BLANK_MODE_POWERDOWN 0x07 /* powered off; requires modeset */
|
|
|
|
#endif
|