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12#include <linux/export.h>
13#include <linux/of_graph.h>
14
15#include <drm/drm_atomic_helper.h>
16#include <drm/drm_device.h>
17#include <drm/drm_edid.h>
18#include <drm/drm_probe_helper.h>
19#include <drm/drm_print.h>
20
21#include "meson_registers.h"
22#include "meson_vclk.h"
23#include "meson_venc_cvbs.h"
24
25
26#define HHI_VDAC_CNTL0 0x2F4
27#define HHI_VDAC_CNTL0_G12A 0x2EC
28#define HHI_VDAC_CNTL1 0x2F8
29#define HHI_VDAC_CNTL1_G12A 0x2F0
30
31struct meson_venc_cvbs {
32 struct drm_encoder encoder;
33 struct drm_connector connector;
34 struct meson_drm *priv;
35};
36#define encoder_to_meson_venc_cvbs(x) \
37 container_of(x, struct meson_venc_cvbs, encoder)
38
39#define connector_to_meson_venc_cvbs(x) \
40 container_of(x, struct meson_venc_cvbs, connector)
41
42
43
44struct meson_cvbs_mode meson_cvbs_modes[MESON_CVBS_MODES_COUNT] = {
45 {
46 .enci = &meson_cvbs_enci_pal,
47 .mode = {
48 DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 13500,
49 720, 732, 795, 864, 0, 576, 580, 586, 625, 0,
50 DRM_MODE_FLAG_INTERLACE),
51 .vrefresh = 50,
52 .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3,
53 },
54 },
55 {
56 .enci = &meson_cvbs_enci_ntsc,
57 .mode = {
58 DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 13500,
59 720, 739, 801, 858, 0, 480, 488, 494, 525, 0,
60 DRM_MODE_FLAG_INTERLACE),
61 .vrefresh = 60,
62 .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3,
63 },
64 },
65};
66
67static const struct meson_cvbs_mode *
68meson_cvbs_get_mode(const struct drm_display_mode *req_mode)
69{
70 int i;
71
72 for (i = 0; i < MESON_CVBS_MODES_COUNT; ++i) {
73 struct meson_cvbs_mode *meson_mode = &meson_cvbs_modes[i];
74
75 if (drm_mode_match(req_mode, &meson_mode->mode,
76 DRM_MODE_MATCH_TIMINGS |
77 DRM_MODE_MATCH_CLOCK |
78 DRM_MODE_MATCH_FLAGS |
79 DRM_MODE_MATCH_3D_FLAGS))
80 return meson_mode;
81 }
82
83 return NULL;
84}
85
86
87
88static void meson_cvbs_connector_destroy(struct drm_connector *connector)
89{
90 drm_connector_cleanup(connector);
91}
92
93static enum drm_connector_status
94meson_cvbs_connector_detect(struct drm_connector *connector, bool force)
95{
96
97 return connector_status_connected;
98}
99
100static int meson_cvbs_connector_get_modes(struct drm_connector *connector)
101{
102 struct drm_device *dev = connector->dev;
103 struct drm_display_mode *mode;
104 int i;
105
106 for (i = 0; i < MESON_CVBS_MODES_COUNT; ++i) {
107 struct meson_cvbs_mode *meson_mode = &meson_cvbs_modes[i];
108
109 mode = drm_mode_duplicate(dev, &meson_mode->mode);
110 if (!mode) {
111 DRM_ERROR("Failed to create a new display mode\n");
112 return 0;
113 }
114
115 drm_mode_probed_add(connector, mode);
116 }
117
118 return i;
119}
120
121static int meson_cvbs_connector_mode_valid(struct drm_connector *connector,
122 struct drm_display_mode *mode)
123{
124
125 return MODE_OK;
126}
127
128static const struct drm_connector_funcs meson_cvbs_connector_funcs = {
129 .detect = meson_cvbs_connector_detect,
130 .fill_modes = drm_helper_probe_single_connector_modes,
131 .destroy = meson_cvbs_connector_destroy,
132 .reset = drm_atomic_helper_connector_reset,
133 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
134 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
135};
136
137static const
138struct drm_connector_helper_funcs meson_cvbs_connector_helper_funcs = {
139 .get_modes = meson_cvbs_connector_get_modes,
140 .mode_valid = meson_cvbs_connector_mode_valid,
141};
142
143
144
145static void meson_venc_cvbs_encoder_destroy(struct drm_encoder *encoder)
146{
147 drm_encoder_cleanup(encoder);
148}
149
150static const struct drm_encoder_funcs meson_venc_cvbs_encoder_funcs = {
151 .destroy = meson_venc_cvbs_encoder_destroy,
152};
153
154static int meson_venc_cvbs_encoder_atomic_check(struct drm_encoder *encoder,
155 struct drm_crtc_state *crtc_state,
156 struct drm_connector_state *conn_state)
157{
158 if (meson_cvbs_get_mode(&crtc_state->mode))
159 return 0;
160
161 return -EINVAL;
162}
163
164static void meson_venc_cvbs_encoder_disable(struct drm_encoder *encoder)
165{
166 struct meson_venc_cvbs *meson_venc_cvbs =
167 encoder_to_meson_venc_cvbs(encoder);
168 struct meson_drm *priv = meson_venc_cvbs->priv;
169
170
171 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
172 regmap_write(priv->hhi, HHI_VDAC_CNTL0_G12A, 0);
173 regmap_write(priv->hhi, HHI_VDAC_CNTL1_G12A, 0);
174 } else {
175 regmap_write(priv->hhi, HHI_VDAC_CNTL0, 0);
176 regmap_write(priv->hhi, HHI_VDAC_CNTL1, 8);
177 }
178}
179
180static void meson_venc_cvbs_encoder_enable(struct drm_encoder *encoder)
181{
182 struct meson_venc_cvbs *meson_venc_cvbs =
183 encoder_to_meson_venc_cvbs(encoder);
184 struct meson_drm *priv = meson_venc_cvbs->priv;
185
186
187 writel_bits_relaxed(VENC_VDAC_SEL_ATV_DMD, 0,
188 priv->io_base + _REG(VENC_VDAC_DACSEL0));
189
190 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
191 regmap_write(priv->hhi, HHI_VDAC_CNTL0, 1);
192 regmap_write(priv->hhi, HHI_VDAC_CNTL1, 0);
193 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
194 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
195 regmap_write(priv->hhi, HHI_VDAC_CNTL0, 0xf0001);
196 regmap_write(priv->hhi, HHI_VDAC_CNTL1, 0);
197 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
198 regmap_write(priv->hhi, HHI_VDAC_CNTL0_G12A, 0x906001);
199 regmap_write(priv->hhi, HHI_VDAC_CNTL1_G12A, 0);
200 }
201}
202
203static void meson_venc_cvbs_encoder_mode_set(struct drm_encoder *encoder,
204 struct drm_display_mode *mode,
205 struct drm_display_mode *adjusted_mode)
206{
207 const struct meson_cvbs_mode *meson_mode = meson_cvbs_get_mode(mode);
208 struct meson_venc_cvbs *meson_venc_cvbs =
209 encoder_to_meson_venc_cvbs(encoder);
210 struct meson_drm *priv = meson_venc_cvbs->priv;
211
212 if (meson_mode) {
213 meson_venci_cvbs_mode_set(priv, meson_mode->enci);
214
215
216 meson_vclk_setup(priv, MESON_VCLK_TARGET_CVBS, MESON_VCLK_CVBS,
217 MESON_VCLK_CVBS, MESON_VCLK_CVBS, true);
218 }
219}
220
221static const struct drm_encoder_helper_funcs
222 meson_venc_cvbs_encoder_helper_funcs = {
223 .atomic_check = meson_venc_cvbs_encoder_atomic_check,
224 .disable = meson_venc_cvbs_encoder_disable,
225 .enable = meson_venc_cvbs_encoder_enable,
226 .mode_set = meson_venc_cvbs_encoder_mode_set,
227};
228
229static bool meson_venc_cvbs_connector_is_available(struct meson_drm *priv)
230{
231 struct device_node *remote;
232
233 remote = of_graph_get_remote_node(priv->dev->of_node, 0, 0);
234 if (!remote)
235 return false;
236
237 of_node_put(remote);
238 return true;
239}
240
241int meson_venc_cvbs_create(struct meson_drm *priv)
242{
243 struct drm_device *drm = priv->drm;
244 struct meson_venc_cvbs *meson_venc_cvbs;
245 struct drm_connector *connector;
246 struct drm_encoder *encoder;
247 int ret;
248
249 if (!meson_venc_cvbs_connector_is_available(priv)) {
250 dev_info(drm->dev, "CVBS Output connector not available\n");
251 return 0;
252 }
253
254 meson_venc_cvbs = devm_kzalloc(priv->dev, sizeof(*meson_venc_cvbs),
255 GFP_KERNEL);
256 if (!meson_venc_cvbs)
257 return -ENOMEM;
258
259 meson_venc_cvbs->priv = priv;
260 encoder = &meson_venc_cvbs->encoder;
261 connector = &meson_venc_cvbs->connector;
262
263
264
265 drm_connector_helper_add(connector,
266 &meson_cvbs_connector_helper_funcs);
267
268 ret = drm_connector_init(drm, connector, &meson_cvbs_connector_funcs,
269 DRM_MODE_CONNECTOR_Composite);
270 if (ret) {
271 dev_err(priv->dev, "Failed to init CVBS connector\n");
272 return ret;
273 }
274
275 connector->interlace_allowed = 1;
276
277
278
279 drm_encoder_helper_add(encoder, &meson_venc_cvbs_encoder_helper_funcs);
280
281 ret = drm_encoder_init(drm, encoder, &meson_venc_cvbs_encoder_funcs,
282 DRM_MODE_ENCODER_TVDAC, "meson_venc_cvbs");
283 if (ret) {
284 dev_err(priv->dev, "Failed to init CVBS encoder\n");
285 return ret;
286 }
287
288 encoder->possible_crtcs = BIT(0);
289
290 drm_connector_attach_encoder(connector, encoder);
291
292 return 0;
293}
294
