diff options
Diffstat (limited to 'drivers/gpu/drm/udl/udl_drv.h')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_drv.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h new file mode 100644 index 000000000..8aab14871 --- /dev/null +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -0,0 +1,106 @@ +/* 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 device *dmadev; + 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 |