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14#include <drm/drm_gem_vram_helper.h>
15#include <drm/drm_atomic_helper.h>
16#include <drm/drm_probe_helper.h>
17#include <drm/drm_crtc_helper.h>
18#include <drm/drm_print.h>
19
20#include "hibmc_drm_drv.h"
21#include "hibmc_drm_regs.h"
22
23static int hibmc_connector_get_modes(struct drm_connector *connector)
24{
25 int count;
26
27 count = drm_add_modes_noedid(connector,
28 connector->dev->mode_config.max_width,
29 connector->dev->mode_config.max_height);
30 drm_set_preferred_mode(connector, 1024, 768);
31
32 return count;
33}
34
35static enum drm_mode_status hibmc_connector_mode_valid(struct drm_connector *connector,
36 struct drm_display_mode *mode)
37{
38 return MODE_OK;
39}
40
41static const struct drm_connector_helper_funcs
42 hibmc_connector_helper_funcs = {
43 .get_modes = hibmc_connector_get_modes,
44 .mode_valid = hibmc_connector_mode_valid,
45};
46
47static const struct drm_connector_funcs hibmc_connector_funcs = {
48 .fill_modes = drm_helper_probe_single_connector_modes,
49 .destroy = drm_connector_cleanup,
50 .reset = drm_atomic_helper_connector_reset,
51 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
52 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
53};
54
55static struct drm_connector *
56hibmc_connector_init(struct hibmc_drm_private *priv)
57{
58 struct drm_device *dev = priv->dev;
59 struct drm_connector *connector;
60 int ret;
61
62 connector = devm_kzalloc(dev->dev, sizeof(*connector), GFP_KERNEL);
63 if (!connector) {
64 DRM_ERROR("failed to alloc memory when init connector\n");
65 return ERR_PTR(-ENOMEM);
66 }
67
68 ret = drm_connector_init(dev, connector,
69 &hibmc_connector_funcs,
70 DRM_MODE_CONNECTOR_VGA);
71 if (ret) {
72 DRM_ERROR("failed to init connector: %d\n", ret);
73 return ERR_PTR(ret);
74 }
75 drm_connector_helper_add(connector,
76 &hibmc_connector_helper_funcs);
77
78 return connector;
79}
80
81static void hibmc_encoder_mode_set(struct drm_encoder *encoder,
82 struct drm_display_mode *mode,
83 struct drm_display_mode *adj_mode)
84{
85 u32 reg;
86 struct drm_device *dev = encoder->dev;
87 struct hibmc_drm_private *priv = dev->dev_private;
88
89 reg = readl(priv->mmio + HIBMC_DISPLAY_CONTROL_HISILE);
90 reg |= HIBMC_DISPLAY_CONTROL_FPVDDEN(1);
91 reg |= HIBMC_DISPLAY_CONTROL_PANELDATE(1);
92 reg |= HIBMC_DISPLAY_CONTROL_FPEN(1);
93 reg |= HIBMC_DISPLAY_CONTROL_VBIASEN(1);
94 writel(reg, priv->mmio + HIBMC_DISPLAY_CONTROL_HISILE);
95}
96
97static const struct drm_encoder_helper_funcs hibmc_encoder_helper_funcs = {
98 .mode_set = hibmc_encoder_mode_set,
99};
100
101static const struct drm_encoder_funcs hibmc_encoder_funcs = {
102 .destroy = drm_encoder_cleanup,
103};
104
105int hibmc_vdac_init(struct hibmc_drm_private *priv)
106{
107 struct drm_device *dev = priv->dev;
108 struct drm_encoder *encoder;
109 struct drm_connector *connector;
110 int ret;
111
112 connector = hibmc_connector_init(priv);
113 if (IS_ERR(connector)) {
114 DRM_ERROR("failed to create connector: %ld\n",
115 PTR_ERR(connector));
116 return PTR_ERR(connector);
117 }
118
119 encoder = devm_kzalloc(dev->dev, sizeof(*encoder), GFP_KERNEL);
120 if (!encoder) {
121 DRM_ERROR("failed to alloc memory when init encoder\n");
122 return -ENOMEM;
123 }
124
125 encoder->possible_crtcs = 0x1;
126 ret = drm_encoder_init(dev, encoder, &hibmc_encoder_funcs,
127 DRM_MODE_ENCODER_DAC, NULL);
128 if (ret) {
129 DRM_ERROR("failed to init encoder: %d\n", ret);
130 return ret;
131 }
132
133 drm_encoder_helper_add(encoder, &hibmc_encoder_helper_funcs);
134 drm_connector_attach_encoder(connector, encoder);
135
136 return 0;
137}
138
