2 * Copyright 2015 Freescale Semiconductor, Inc.
4 * Freescale DCU drm device driver
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/clk.h>
13 #include <linux/regmap.h>
16 #include <drm/drm_atomic.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_crtc.h>
19 #include <drm/drm_crtc_helper.h>
21 #include "fsl_dcu_drm_crtc.h"
22 #include "fsl_dcu_drm_drv.h"
23 #include "fsl_dcu_drm_plane.h"
25 static void fsl_dcu_drm_crtc_atomic_begin(struct drm_crtc *crtc,
26 struct drm_crtc_state *old_crtc_state)
30 static int fsl_dcu_drm_crtc_atomic_check(struct drm_crtc *crtc,
31 struct drm_crtc_state *state)
36 static void fsl_dcu_drm_crtc_atomic_flush(struct drm_crtc *crtc,
37 struct drm_crtc_state *old_crtc_state)
41 static void fsl_dcu_drm_disable_crtc(struct drm_crtc *crtc)
43 struct drm_device *dev = crtc->dev;
44 struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
46 regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
47 DCU_MODE_DCU_MODE_MASK,
48 DCU_MODE_DCU_MODE(DCU_MODE_OFF));
49 regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
50 DCU_UPDATE_MODE_READREG);
53 static void fsl_dcu_drm_crtc_enable(struct drm_crtc *crtc)
55 struct drm_device *dev = crtc->dev;
56 struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
58 regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
59 DCU_MODE_DCU_MODE_MASK,
60 DCU_MODE_DCU_MODE(DCU_MODE_NORMAL));
61 regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
62 DCU_UPDATE_MODE_READREG);
65 static void fsl_dcu_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
67 struct drm_device *dev = crtc->dev;
68 struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
69 struct drm_display_mode *mode = &crtc->state->mode;
70 unsigned int hbp, hfp, hsw, vbp, vfp, vsw, index, pol = 0;
72 index = drm_crtc_index(crtc);
73 clk_set_rate(fsl_dev->pix_clk, mode->clock * 1000);
75 /* Configure timings: */
76 hbp = mode->htotal - mode->hsync_end;
77 hfp = mode->hsync_start - mode->hdisplay;
78 hsw = mode->hsync_end - mode->hsync_start;
79 vbp = mode->vtotal - mode->vsync_end;
80 vfp = mode->vsync_start - mode->vdisplay;
81 vsw = mode->vsync_end - mode->vsync_start;
83 if (mode->flags & DRM_MODE_FLAG_NHSYNC)
84 pol |= DCU_SYN_POL_INV_HS_LOW;
86 if (mode->flags & DRM_MODE_FLAG_NVSYNC)
87 pol |= DCU_SYN_POL_INV_VS_LOW;
89 regmap_write(fsl_dev->regmap, DCU_HSYN_PARA,
90 DCU_HSYN_PARA_BP(hbp) |
91 DCU_HSYN_PARA_PW(hsw) |
92 DCU_HSYN_PARA_FP(hfp));
93 regmap_write(fsl_dev->regmap, DCU_VSYN_PARA,
94 DCU_VSYN_PARA_BP(vbp) |
95 DCU_VSYN_PARA_PW(vsw) |
96 DCU_VSYN_PARA_FP(vfp));
97 regmap_write(fsl_dev->regmap, DCU_DISP_SIZE,
98 DCU_DISP_SIZE_DELTA_Y(mode->vdisplay) |
99 DCU_DISP_SIZE_DELTA_X(mode->hdisplay));
100 regmap_write(fsl_dev->regmap, DCU_SYN_POL, pol);
101 regmap_write(fsl_dev->regmap, DCU_BGND, DCU_BGND_R(0) |
102 DCU_BGND_G(0) | DCU_BGND_B(0));
103 regmap_write(fsl_dev->regmap, DCU_DCU_MODE,
104 DCU_MODE_BLEND_ITER(1) | DCU_MODE_RASTER_EN);
105 regmap_write(fsl_dev->regmap, DCU_THRESHOLD,
106 DCU_THRESHOLD_LS_BF_VS(BF_VS_VAL) |
107 DCU_THRESHOLD_OUT_BUF_HIGH(BUF_MAX_VAL) |
108 DCU_THRESHOLD_OUT_BUF_LOW(BUF_MIN_VAL));
109 regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
110 DCU_UPDATE_MODE_READREG);
114 static const struct drm_crtc_helper_funcs fsl_dcu_drm_crtc_helper_funcs = {
115 .atomic_begin = fsl_dcu_drm_crtc_atomic_begin,
116 .atomic_check = fsl_dcu_drm_crtc_atomic_check,
117 .atomic_flush = fsl_dcu_drm_crtc_atomic_flush,
118 .disable = fsl_dcu_drm_disable_crtc,
119 .enable = fsl_dcu_drm_crtc_enable,
120 .mode_set_nofb = fsl_dcu_drm_crtc_mode_set_nofb,
123 static const struct drm_crtc_funcs fsl_dcu_drm_crtc_funcs = {
124 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
125 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
126 .destroy = drm_crtc_cleanup,
127 .page_flip = drm_atomic_helper_page_flip,
128 .reset = drm_atomic_helper_crtc_reset,
129 .set_config = drm_atomic_helper_set_config,
132 int fsl_dcu_drm_crtc_create(struct fsl_dcu_drm_device *fsl_dev)
134 struct drm_plane *primary;
135 struct drm_crtc *crtc = &fsl_dev->crtc;
136 unsigned int i, j, reg_num;
139 primary = fsl_dcu_drm_primary_create_plane(fsl_dev->drm);
143 ret = drm_crtc_init_with_planes(fsl_dev->drm, crtc, primary, NULL,
144 &fsl_dcu_drm_crtc_funcs, NULL);
146 primary->funcs->destroy(primary);
150 drm_crtc_helper_add(crtc, &fsl_dcu_drm_crtc_helper_funcs);
152 if (!strcmp(fsl_dev->soc->name, "ls1021a"))
153 reg_num = LS1021A_LAYER_REG_NUM;
155 reg_num = VF610_LAYER_REG_NUM;
156 for (i = 0; i < fsl_dev->soc->total_layer; i++) {
157 for (j = 1; j <= reg_num; j++)
158 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(i, j), 0);
160 regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
161 DCU_MODE_DCU_MODE_MASK,
162 DCU_MODE_DCU_MODE(DCU_MODE_OFF));
163 regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
164 DCU_UPDATE_MODE_READREG);