1 /* $NetBSD: ti_lcdc.h,v 1.3 2021/12/19 12:44:57 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2019 Jared D. McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _ARM_TI_TI_LCDC_H 30 #define _ARM_TI_TI_LCDC_H 31 32 #include <sys/workqueue.h> 33 34 #include <drm/drm_encoder.h> 35 #include <drm/drm_fb_helper.h> 36 #include <drm/drm_gem_cma_helper.h> 37 38 #define DRIVER_AUTHOR "NetBSD" 39 40 #define DRIVER_NAME "tilcdc" 41 #define DRIVER_DESC "TI LCDC" 42 #define DRIVER_DATE "20191103" 43 44 #define DRIVER_MAJOR 1 45 #define DRIVER_MINOR 0 46 #define DRIVER_PATCHLEVEL 0 47 48 struct tilcdc_softc; 49 struct tilcdc_framebuffer; 50 51 struct tilcdc_vblank { 52 void *priv; 53 void (*enable_vblank)(void *); 54 void (*disable_vblank)(void *); 55 uint32_t (*get_vblank_counter)(void *); 56 }; 57 58 struct tilcdc_crtc { 59 struct drm_crtc base; 60 struct tilcdc_softc *sc; 61 }; 62 63 struct tilcdc_encoder { 64 struct drm_encoder base; 65 struct tilcdc_softc *sc; 66 }; 67 68 struct tilcdc_softc { 69 device_t sc_dev; 70 struct drm_device *sc_ddev; 71 72 bus_space_tag_t sc_bst; 73 bus_space_handle_t sc_bsh; 74 bus_dma_tag_t sc_dmat; 75 76 struct clk *sc_clk; 77 int sc_phandle; 78 79 struct lwp *sc_task_thread; 80 SIMPLEQ_HEAD(, tilcdc_drm_task) sc_tasks; 81 struct workqueue *sc_task_wq; 82 83 bool sc_dev_registered; 84 85 struct tilcdc_crtc sc_crtc; 86 struct tilcdc_encoder sc_encoder; 87 struct tilcdc_vblank sc_vbl; 88 89 struct fdt_device_ports sc_ports; 90 }; 91 92 struct tilcdc_framebuffer { 93 struct drm_framebuffer base; 94 struct drm_gem_cma_object *obj; 95 }; 96 97 struct tilcdc_fbdev { 98 struct drm_fb_helper helper; 99 }; 100 101 struct tilcdcfb_attach_args { 102 struct drm_device *tfa_drm_dev; 103 struct drm_fb_helper *tfa_fb_helper; 104 struct drm_fb_helper_surface_size tfa_fb_sizes; 105 bus_space_tag_t tfa_fb_bst; 106 bus_dma_tag_t tfa_fb_dmat; 107 uint32_t tfa_fb_linebytes; 108 }; 109 110 struct tilcdc_drm_task { 111 union { 112 SIMPLEQ_ENTRY(tilcdc_drm_task) queue; 113 struct work work; 114 } tdt_u; 115 void (*tdt_fn)(struct tilcdc_drm_task *); 116 }; 117 118 #define tilcdc_private(ddev) (ddev)->dev_private 119 #define to_tilcdc_framebuffer(x) container_of(x, struct tilcdc_framebuffer, base) 120 #define to_tilcdc_crtc(x) container_of(x, struct tilcdc_crtc, base) 121 122 #define RD4(sc, reg) \ 123 bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg)) 124 #define WR4(sc, reg, val) \ 125 bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val)) 126 127 void tilcdc_task_init(struct tilcdc_drm_task *, 128 void (*)(struct tilcdc_drm_task *)); 129 void tilcdc_task_schedule(device_t, struct tilcdc_drm_task *); 130 131 #endif /* _ARM_TI_TI_LCDC_H */ 132