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12#include <linux/regmap.h>
13
14#include <drm/drmP.h>
15#include <drm/drm_atomic_helper.h>
16#include <drm/drm_crtc.h>
17#include <drm/drm_crtc_helper.h>
18#include <drm/drm_fb_cma_helper.h>
19#include <drm/drm_gem_cma_helper.h>
20#include <drm/drm_plane_helper.h>
21
22#include "fsl_dcu_drm_drv.h"
23#include "fsl_dcu_drm_plane.h"
24
25static int fsl_dcu_drm_plane_index(struct drm_plane *plane)
26{
27 struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
28 unsigned int total_layer = fsl_dev->soc->total_layer;
29 unsigned int index;
30
31 index = drm_plane_index(plane);
32 if (index < total_layer)
33 return total_layer - index - 1;
34
35 dev_err(fsl_dev->dev, "No more layer left\n");
36 return -EINVAL;
37}
38
39static int fsl_dcu_drm_plane_atomic_check(struct drm_plane *plane,
40 struct drm_plane_state *state)
41{
42 struct drm_framebuffer *fb = state->fb;
43
44 if (!state->fb || !state->crtc)
45 return 0;
46
47 switch (fb->pixel_format) {
48 case DRM_FORMAT_RGB565:
49 case DRM_FORMAT_RGB888:
50 case DRM_FORMAT_XRGB8888:
51 case DRM_FORMAT_ARGB8888:
52 case DRM_FORMAT_XRGB4444:
53 case DRM_FORMAT_ARGB4444:
54 case DRM_FORMAT_XRGB1555:
55 case DRM_FORMAT_ARGB1555:
56 case DRM_FORMAT_YUV422:
57 return 0;
58 default:
59 return -EINVAL;
60 }
61}
62
63static void fsl_dcu_drm_plane_atomic_disable(struct drm_plane *plane,
64 struct drm_plane_state *old_state)
65{
66 struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
67 unsigned int value;
68 int index;
69
70 index = fsl_dcu_drm_plane_index(plane);
71 if (index < 0)
72 return;
73
74 regmap_read(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), &value);
75 value &= ~DCU_LAYER_EN;
76 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), value);
77}
78
79static void fsl_dcu_drm_plane_atomic_update(struct drm_plane *plane,
80 struct drm_plane_state *old_state)
81
82{
83 struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
84 struct drm_plane_state *state = plane->state;
85 struct drm_framebuffer *fb = plane->state->fb;
86 struct drm_gem_cma_object *gem;
87 unsigned int alpha = DCU_LAYER_AB_NONE, bpp;
88 int index;
89
90 if (!fb)
91 return;
92
93 index = fsl_dcu_drm_plane_index(plane);
94 if (index < 0)
95 return;
96
97 gem = drm_fb_cma_get_gem_obj(fb, 0);
98
99 switch (fb->pixel_format) {
100 case DRM_FORMAT_RGB565:
101 bpp = FSL_DCU_RGB565;
102 break;
103 case DRM_FORMAT_RGB888:
104 bpp = FSL_DCU_RGB888;
105 break;
106 case DRM_FORMAT_ARGB8888:
107 alpha = DCU_LAYER_AB_WHOLE_FRAME;
108
109 case DRM_FORMAT_XRGB8888:
110 bpp = FSL_DCU_ARGB8888;
111 break;
112 case DRM_FORMAT_ARGB4444:
113 alpha = DCU_LAYER_AB_WHOLE_FRAME;
114
115 case DRM_FORMAT_XRGB4444:
116 bpp = FSL_DCU_ARGB4444;
117 break;
118 case DRM_FORMAT_ARGB1555:
119 alpha = DCU_LAYER_AB_WHOLE_FRAME;
120
121 case DRM_FORMAT_XRGB1555:
122 bpp = FSL_DCU_ARGB1555;
123 break;
124 case DRM_FORMAT_YUV422:
125 bpp = FSL_DCU_YUV422;
126 break;
127 default:
128 return;
129 }
130
131 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 1),
132 DCU_LAYER_HEIGHT(state->crtc_h) |
133 DCU_LAYER_WIDTH(state->crtc_w));
134 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 2),
135 DCU_LAYER_POSY(state->crtc_y) |
136 DCU_LAYER_POSX(state->crtc_x));
137 regmap_write(fsl_dev->regmap,
138 DCU_CTRLDESCLN(index, 3), gem->paddr);
139 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4),
140 DCU_LAYER_EN |
141 DCU_LAYER_TRANS(0xff) |
142 DCU_LAYER_BPP(bpp) |
143 alpha);
144 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 5),
145 DCU_LAYER_CKMAX_R(0xFF) |
146 DCU_LAYER_CKMAX_G(0xFF) |
147 DCU_LAYER_CKMAX_B(0xFF));
148 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 6),
149 DCU_LAYER_CKMIN_R(0) |
150 DCU_LAYER_CKMIN_G(0) |
151 DCU_LAYER_CKMIN_B(0));
152 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 7), 0);
153 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 8),
154 DCU_LAYER_FG_FCOLOR(0));
155 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 9),
156 DCU_LAYER_BG_BCOLOR(0));
157
158 if (!strcmp(fsl_dev->soc->name, "ls1021a")) {
159 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 10),
160 DCU_LAYER_POST_SKIP(0) |
161 DCU_LAYER_PRE_SKIP(0));
162 }
163 regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
164 DCU_MODE_DCU_MODE_MASK,
165 DCU_MODE_DCU_MODE(DCU_MODE_NORMAL));
166 regmap_write(fsl_dev->regmap,
167 DCU_UPDATE_MODE, DCU_UPDATE_MODE_READREG);
168
169 return;
170}
171
172static void
173fsl_dcu_drm_plane_cleanup_fb(struct drm_plane *plane,
174 const struct drm_plane_state *new_state)
175{
176}
177
178static int
179fsl_dcu_drm_plane_prepare_fb(struct drm_plane *plane,
180 const struct drm_plane_state *new_state)
181{
182 return 0;
183}
184
185static const struct drm_plane_helper_funcs fsl_dcu_drm_plane_helper_funcs = {
186 .atomic_check = fsl_dcu_drm_plane_atomic_check,
187 .atomic_disable = fsl_dcu_drm_plane_atomic_disable,
188 .atomic_update = fsl_dcu_drm_plane_atomic_update,
189 .cleanup_fb = fsl_dcu_drm_plane_cleanup_fb,
190 .prepare_fb = fsl_dcu_drm_plane_prepare_fb,
191};
192
193static void fsl_dcu_drm_plane_destroy(struct drm_plane *plane)
194{
195 drm_plane_cleanup(plane);
196 kfree(plane);
197}
198
199static const struct drm_plane_funcs fsl_dcu_drm_plane_funcs = {
200 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
201 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
202 .destroy = fsl_dcu_drm_plane_destroy,
203 .disable_plane = drm_atomic_helper_disable_plane,
204 .reset = drm_atomic_helper_plane_reset,
205 .update_plane = drm_atomic_helper_update_plane,
206};
207
208static const u32 fsl_dcu_drm_plane_formats[] = {
209 DRM_FORMAT_RGB565,
210 DRM_FORMAT_RGB888,
211 DRM_FORMAT_XRGB8888,
212 DRM_FORMAT_ARGB8888,
213 DRM_FORMAT_XRGB4444,
214 DRM_FORMAT_ARGB4444,
215 DRM_FORMAT_XRGB1555,
216 DRM_FORMAT_ARGB1555,
217 DRM_FORMAT_YUV422,
218};
219
220struct drm_plane *fsl_dcu_drm_primary_create_plane(struct drm_device *dev)
221{
222 struct drm_plane *primary;
223 int ret;
224
225 primary = kzalloc(sizeof(*primary), GFP_KERNEL);
226 if (!primary) {
227 DRM_DEBUG_KMS("Failed to allocate primary plane\n");
228 return NULL;
229 }
230
231
232 ret = drm_universal_plane_init(dev, primary, 0,
233 &fsl_dcu_drm_plane_funcs,
234 fsl_dcu_drm_plane_formats,
235 ARRAY_SIZE(fsl_dcu_drm_plane_formats),
236 DRM_PLANE_TYPE_PRIMARY, NULL);
237 if (ret) {
238 kfree(primary);
239 primary = NULL;
240 }
241 drm_plane_helper_add(primary, &fsl_dcu_drm_plane_helper_funcs);
242
243 return primary;
244}
245
