// SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2019 Hans de Goede <[email protected]> */ #include <linux/module.h> #include <linux/pm.h> #include <linux/usb.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_atomic_state_helper.h> #include <drm/drm_connector.h> #include <drm/drm_damage_helper.h> #include <drm/drm_drv.h> #include <drm/drm_edid.h> #include <drm/drm_fbdev_shmem.h> #include <drm/drm_file.h> #include <drm/drm_format_helper.h> #include <drm/drm_fourcc.h> #include <drm/drm_framebuffer.h> #include <drm/drm_gem_atomic_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_gem_shmem_helper.h> #include <drm/drm_ioctl.h> #include <drm/drm_managed.h> #include <drm/drm_modeset_helper_vtables.h> #include <drm/drm_probe_helper.h> #include <drm/drm_simple_kms_helper.h> static bool eco_mode; module_param(eco_mode, bool, 0644); MODULE_PARM_DESC(…) …; #define DRIVER_NAME … #define DRIVER_DESC … #define DRIVER_DATE … #define DRIVER_MAJOR … #define DRIVER_MINOR … /* * The DLP has an actual width of 854 pixels, but that is not a multiple * of 8, breaking things left and right, so we export a width of 848. */ #define GM12U320_USER_WIDTH … #define GM12U320_REAL_WIDTH … #define GM12U320_HEIGHT … #define GM12U320_BLOCK_COUNT … #define GM12U320_ERR(fmt, ...) … #define MISC_RCV_EPT … #define DATA_RCV_EPT … #define DATA_SND_EPT … #define MISC_SND_EPT … #define DATA_BLOCK_HEADER_SIZE … #define DATA_BLOCK_CONTENT_SIZE … #define DATA_BLOCK_FOOTER_SIZE … #define DATA_BLOCK_SIZE … #define DATA_LAST_BLOCK_CONTENT_SIZE … #define DATA_LAST_BLOCK_SIZE … #define CMD_SIZE … #define READ_STATUS_SIZE … #define MISC_VALUE_SIZE … #define CMD_TIMEOUT … #define DATA_TIMEOUT … #define IDLE_TIMEOUT … #define FIRST_FRAME_TIMEOUT … #define MISC_REQ_GET_SET_ECO_A … #define MISC_REQ_GET_SET_ECO_B … /* Windows driver does once every second, with arg d = 1, other args 0 */ #define MISC_REQ_UNKNOWN1_A … #define MISC_REQ_UNKNOWN1_B … /* Windows driver does this on init, with arg a, b = 0, c = 0xa0, d = 4 */ #define MISC_REQ_UNKNOWN2_A … #define MISC_REQ_UNKNOWN2_B … struct gm12u320_device { … }; #define to_gm12u320(__dev) … static const char cmd_data[CMD_SIZE] = …; static const char cmd_draw[CMD_SIZE] = …; static const char cmd_misc[CMD_SIZE] = …; static const char data_block_header[DATA_BLOCK_HEADER_SIZE] = …; static const char data_last_block_header[DATA_BLOCK_HEADER_SIZE] = …; static const char data_block_footer[DATA_BLOCK_FOOTER_SIZE] = …; static inline struct usb_device *gm12u320_to_usb_device(struct gm12u320_device *gm12u320) { … } static int gm12u320_usb_alloc(struct gm12u320_device *gm12u320) { … } static int gm12u320_misc_request(struct gm12u320_device *gm12u320, u8 req_a, u8 req_b, u8 arg_a, u8 arg_b, u8 arg_c, u8 arg_d) { … } static void gm12u320_32bpp_to_24bpp_packed(u8 *dst, u8 *src, int len) { … } static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320) { … } static void gm12u320_fb_update_work(struct work_struct *work) { … } static void gm12u320_fb_mark_dirty(struct drm_framebuffer *fb, const struct iosys_map *map, struct drm_rect *dirty) { … } static void gm12u320_stop_fb_update(struct gm12u320_device *gm12u320) { … } static int gm12u320_set_ecomode(struct gm12u320_device *gm12u320) { … } /* ------------------------------------------------------------------ */ /* gm12u320 connector */ /* * We use fake EDID info so that userspace know that it is dealing with * an Acer projector, rather then listing this as an "unknown" monitor. * Note this assumes this driver is only ever used with the Acer C120, if we * add support for other devices the vendor and model should be parameterized. */ static struct edid gm12u320_edid = …; static int gm12u320_conn_get_modes(struct drm_connector *connector) { … } static const struct drm_connector_helper_funcs gm12u320_conn_helper_funcs = …; static const struct drm_connector_funcs gm12u320_conn_funcs = …; static int gm12u320_conn_init(struct gm12u320_device *gm12u320) { … } /* ------------------------------------------------------------------ */ /* gm12u320 (simple) display pipe */ static void gm12u320_pipe_enable(struct drm_simple_display_pipe *pipe, struct drm_crtc_state *crtc_state, struct drm_plane_state *plane_state) { … } static void gm12u320_pipe_disable(struct drm_simple_display_pipe *pipe) { … } static void gm12u320_pipe_update(struct drm_simple_display_pipe *pipe, struct drm_plane_state *old_state) { … } static const struct drm_simple_display_pipe_funcs gm12u320_pipe_funcs = …; static const uint32_t gm12u320_pipe_formats[] = …; static const uint64_t gm12u320_pipe_modifiers[] = …; /* * FIXME: Dma-buf sharing requires DMA support by the importing device. * This function is a workaround to make USB devices work as well. * See todo.rst for how to fix the issue in the dma-buf framework. */ static struct drm_gem_object *gm12u320_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf) { … } DEFINE_DRM_GEM_FOPS(gm12u320_fops); static const struct drm_driver gm12u320_drm_driver = …; static const struct drm_mode_config_funcs gm12u320_mode_config_funcs = …; static int gm12u320_usb_probe(struct usb_interface *interface, const struct usb_device_id *id) { … } static void gm12u320_usb_disconnect(struct usb_interface *interface) { … } static int gm12u320_suspend(struct usb_interface *interface, pm_message_t message) { … } static int gm12u320_resume(struct usb_interface *interface) { … } static const struct usb_device_id id_table[] = …; MODULE_DEVICE_TABLE(usb, id_table); static struct usb_driver gm12u320_usb_driver = …; module_usb_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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