Commit | Line | Data |
---|---|---|
19022aaa SH |
1 | /* |
2 | * i.MX drm driver - parallel display implementation | |
3 | * | |
4 | * Copyright (C) 2012 Sascha Hauer, Pengutronix | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | |
18 | * MA 02110-1301, USA. | |
19 | */ | |
20 | ||
21 | #include <linux/module.h> | |
22 | #include <drm/drmP.h> | |
23 | #include <drm/drm_fb_helper.h> | |
24 | #include <drm/drm_crtc_helper.h> | |
25 | #include <linux/videodev2.h> | |
26 | ||
27 | #include "imx-drm.h" | |
28 | ||
29 | #define con_to_imxpd(x) container_of(x, struct imx_parallel_display, connector) | |
30 | #define enc_to_imxpd(x) container_of(x, struct imx_parallel_display, encoder) | |
31 | ||
32 | struct imx_parallel_display { | |
33 | struct drm_connector connector; | |
34 | struct imx_drm_connector *imx_drm_connector; | |
35 | struct drm_encoder encoder; | |
36 | struct imx_drm_encoder *imx_drm_encoder; | |
37 | struct device *dev; | |
38 | void *edid; | |
39 | int edid_len; | |
40 | u32 interface_pix_fmt; | |
41 | int mode_valid; | |
42 | struct drm_display_mode mode; | |
43 | }; | |
44 | ||
45 | static enum drm_connector_status imx_pd_connector_detect( | |
46 | struct drm_connector *connector, bool force) | |
47 | { | |
48 | return connector_status_connected; | |
49 | } | |
50 | ||
51 | static void imx_pd_connector_destroy(struct drm_connector *connector) | |
52 | { | |
53 | /* do not free here */ | |
54 | } | |
55 | ||
56 | static int imx_pd_connector_get_modes(struct drm_connector *connector) | |
57 | { | |
58 | struct imx_parallel_display *imxpd = con_to_imxpd(connector); | |
afb12edf | 59 | struct device_node *np = imxpd->dev->of_node; |
19022aaa SH |
60 | int num_modes = 0; |
61 | ||
62 | if (imxpd->edid) { | |
63 | drm_mode_connector_update_edid_property(connector, imxpd->edid); | |
64 | num_modes = drm_add_edid_modes(connector, imxpd->edid); | |
65 | } | |
66 | ||
67 | if (imxpd->mode_valid) { | |
68 | struct drm_display_mode *mode = drm_mode_create(connector->dev); | |
69 | drm_mode_copy(mode, &imxpd->mode); | |
70 | mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, | |
afb12edf MV |
71 | drm_mode_probed_add(connector, mode); |
72 | num_modes++; | |
73 | } | |
74 | ||
75 | if (np) { | |
76 | struct drm_display_mode *mode = drm_mode_create(connector->dev); | |
77 | of_get_drm_display_mode(np, &imxpd->mode, 0); | |
78 | drm_mode_copy(mode, &imxpd->mode); | |
79 | mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, | |
19022aaa SH |
80 | drm_mode_probed_add(connector, mode); |
81 | num_modes++; | |
82 | } | |
83 | ||
84 | return num_modes; | |
85 | } | |
86 | ||
87 | static int imx_pd_connector_mode_valid(struct drm_connector *connector, | |
88 | struct drm_display_mode *mode) | |
89 | { | |
90 | return 0; | |
91 | } | |
92 | ||
93 | static struct drm_encoder *imx_pd_connector_best_encoder( | |
94 | struct drm_connector *connector) | |
95 | { | |
96 | struct imx_parallel_display *imxpd = con_to_imxpd(connector); | |
97 | ||
98 | return &imxpd->encoder; | |
99 | } | |
100 | ||
101 | static void imx_pd_encoder_dpms(struct drm_encoder *encoder, int mode) | |
102 | { | |
103 | } | |
104 | ||
105 | static bool imx_pd_encoder_mode_fixup(struct drm_encoder *encoder, | |
106 | const struct drm_display_mode *mode, | |
107 | struct drm_display_mode *adjusted_mode) | |
108 | { | |
109 | return true; | |
110 | } | |
111 | ||
112 | static void imx_pd_encoder_prepare(struct drm_encoder *encoder) | |
113 | { | |
114 | struct imx_parallel_display *imxpd = enc_to_imxpd(encoder); | |
115 | ||
116 | imx_drm_crtc_panel_format(encoder->crtc, DRM_MODE_ENCODER_NONE, | |
117 | imxpd->interface_pix_fmt); | |
118 | } | |
119 | ||
120 | static void imx_pd_encoder_commit(struct drm_encoder *encoder) | |
121 | { | |
122 | } | |
123 | ||
124 | static void imx_pd_encoder_mode_set(struct drm_encoder *encoder, | |
125 | struct drm_display_mode *mode, | |
126 | struct drm_display_mode *adjusted_mode) | |
127 | { | |
128 | } | |
129 | ||
130 | static void imx_pd_encoder_disable(struct drm_encoder *encoder) | |
131 | { | |
132 | } | |
133 | ||
134 | static void imx_pd_encoder_destroy(struct drm_encoder *encoder) | |
135 | { | |
136 | /* do not free here */ | |
137 | } | |
138 | ||
139 | static struct drm_connector_funcs imx_pd_connector_funcs = { | |
140 | .dpms = drm_helper_connector_dpms, | |
141 | .fill_modes = drm_helper_probe_single_connector_modes, | |
142 | .detect = imx_pd_connector_detect, | |
143 | .destroy = imx_pd_connector_destroy, | |
144 | }; | |
145 | ||
146 | static struct drm_connector_helper_funcs imx_pd_connector_helper_funcs = { | |
147 | .get_modes = imx_pd_connector_get_modes, | |
148 | .best_encoder = imx_pd_connector_best_encoder, | |
149 | .mode_valid = imx_pd_connector_mode_valid, | |
150 | }; | |
151 | ||
152 | static struct drm_encoder_funcs imx_pd_encoder_funcs = { | |
153 | .destroy = imx_pd_encoder_destroy, | |
154 | }; | |
155 | ||
156 | static struct drm_encoder_helper_funcs imx_pd_encoder_helper_funcs = { | |
157 | .dpms = imx_pd_encoder_dpms, | |
158 | .mode_fixup = imx_pd_encoder_mode_fixup, | |
159 | .prepare = imx_pd_encoder_prepare, | |
160 | .commit = imx_pd_encoder_commit, | |
161 | .mode_set = imx_pd_encoder_mode_set, | |
162 | .disable = imx_pd_encoder_disable, | |
163 | }; | |
164 | ||
165 | static int imx_pd_register(struct imx_parallel_display *imxpd) | |
166 | { | |
167 | int ret; | |
168 | ||
169 | drm_mode_connector_attach_encoder(&imxpd->connector, &imxpd->encoder); | |
170 | ||
171 | imxpd->connector.funcs = &imx_pd_connector_funcs; | |
172 | imxpd->encoder.funcs = &imx_pd_encoder_funcs; | |
173 | ||
174 | imxpd->encoder.encoder_type = DRM_MODE_ENCODER_NONE; | |
175 | imxpd->connector.connector_type = DRM_MODE_CONNECTOR_VGA; | |
176 | ||
177 | drm_encoder_helper_add(&imxpd->encoder, &imx_pd_encoder_helper_funcs); | |
178 | ret = imx_drm_add_encoder(&imxpd->encoder, &imxpd->imx_drm_encoder, | |
179 | THIS_MODULE); | |
180 | if (ret) { | |
181 | dev_err(imxpd->dev, "adding encoder failed with %d\n", ret); | |
182 | return ret; | |
183 | } | |
184 | ||
185 | drm_connector_helper_add(&imxpd->connector, | |
186 | &imx_pd_connector_helper_funcs); | |
187 | ||
188 | ret = imx_drm_add_connector(&imxpd->connector, | |
189 | &imxpd->imx_drm_connector, THIS_MODULE); | |
190 | if (ret) { | |
191 | imx_drm_remove_encoder(imxpd->imx_drm_encoder); | |
192 | dev_err(imxpd->dev, "adding connector failed with %d\n", ret); | |
193 | return ret; | |
194 | } | |
195 | ||
196 | imxpd->connector.encoder = &imxpd->encoder; | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
c4aabf8d | 201 | static int imx_pd_probe(struct platform_device *pdev) |
19022aaa SH |
202 | { |
203 | struct device_node *np = pdev->dev.of_node; | |
204 | const u8 *edidp; | |
205 | struct imx_parallel_display *imxpd; | |
206 | int ret; | |
207 | const char *fmt; | |
208 | ||
209 | imxpd = devm_kzalloc(&pdev->dev, sizeof(*imxpd), GFP_KERNEL); | |
210 | if (!imxpd) | |
211 | return -ENOMEM; | |
212 | ||
213 | edidp = of_get_property(np, "edid", &imxpd->edid_len); | |
214 | if (edidp) | |
215 | imxpd->edid = kmemdup(edidp, imxpd->edid_len, GFP_KERNEL); | |
216 | ||
217 | ret = of_property_read_string(np, "interface-pix-fmt", &fmt); | |
218 | if (!ret) { | |
219 | if (!strcmp(fmt, "rgb24")) | |
220 | imxpd->interface_pix_fmt = V4L2_PIX_FMT_RGB24; | |
221 | else if (!strcmp(fmt, "rgb565")) | |
222 | imxpd->interface_pix_fmt = V4L2_PIX_FMT_RGB565; | |
7d0a66c0 MV |
223 | else if (!strcmp(fmt, "bgr666")) |
224 | imxpd->interface_pix_fmt = V4L2_PIX_FMT_BGR666; | |
19022aaa SH |
225 | } |
226 | ||
227 | imxpd->dev = &pdev->dev; | |
228 | ||
229 | ret = imx_pd_register(imxpd); | |
230 | if (ret) | |
231 | return ret; | |
232 | ||
233 | ret = imx_drm_encoder_add_possible_crtcs(imxpd->imx_drm_encoder, np); | |
234 | ||
235 | platform_set_drvdata(pdev, imxpd); | |
236 | ||
237 | return 0; | |
238 | } | |
239 | ||
8aa1be45 | 240 | static int imx_pd_remove(struct platform_device *pdev) |
19022aaa SH |
241 | { |
242 | struct imx_parallel_display *imxpd = platform_get_drvdata(pdev); | |
243 | struct drm_connector *connector = &imxpd->connector; | |
244 | struct drm_encoder *encoder = &imxpd->encoder; | |
245 | ||
246 | drm_mode_connector_detach_encoder(connector, encoder); | |
247 | ||
248 | imx_drm_remove_connector(imxpd->imx_drm_connector); | |
249 | imx_drm_remove_encoder(imxpd->imx_drm_encoder); | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
254 | static const struct of_device_id imx_pd_dt_ids[] = { | |
255 | { .compatible = "fsl,imx-parallel-display", }, | |
256 | { /* sentinel */ } | |
257 | }; | |
fa45f2c7 | 258 | MODULE_DEVICE_TABLE(of, imx_pd_dt_ids); |
19022aaa SH |
259 | |
260 | static struct platform_driver imx_pd_driver = { | |
261 | .probe = imx_pd_probe, | |
99c28f10 | 262 | .remove = imx_pd_remove, |
19022aaa SH |
263 | .driver = { |
264 | .of_match_table = imx_pd_dt_ids, | |
265 | .name = "imx-parallel-display", | |
266 | .owner = THIS_MODULE, | |
267 | }, | |
268 | }; | |
269 | ||
270 | module_platform_driver(imx_pd_driver); | |
271 | ||
272 | MODULE_DESCRIPTION("i.MX parallel display driver"); | |
273 | MODULE_AUTHOR("Sascha Hauer, Pengutronix"); | |
274 | MODULE_LICENSE("GPL"); | |
b2da05ff | 275 | MODULE_ALIAS("platform:imx-parallel-display"); |