1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
|
/* Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
*
* derived from imx-hdmi.c(renamed to bridge/dw_hdmi.c now)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/component.h>
#include <linux/mfd/syscon.h>
#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
#include <drm/bridge/dw_hdmi.h>
#include <video/imx-ipu-v3.h>
#include <linux/regmap.h>
#include <drm/drm_of.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_encoder_slave.h>
#include "imx-drm.h"
struct imx_hdmi {
struct device *dev;
struct drm_encoder encoder;
struct regmap *regmap;
};
static const struct dw_hdmi_mpll_config imx_mpll_cfg[] = {
{
45250000, {
{ 0x01e0, 0x0000 },
{ 0x21e1, 0x0000 },
{ 0x41e2, 0x0000 }
},
}, {
92500000, {
{ 0x0140, 0x0005 },
{ 0x2141, 0x0005 },
{ 0x4142, 0x0005 },
},
}, {
148500000, {
{ 0x00a0, 0x000a },
{ 0x20a1, 0x000a },
{ 0x40a2, 0x000a },
},
}, {
~0UL, {
{ 0x00a0, 0x000a },
{ 0x2001, 0x000f },
{ 0x4002, 0x000f },
},
}
};
static const struct dw_hdmi_curr_ctrl imx_cur_ctr[] = {
/* pixelclk bpp8 bpp10 bpp12 */
{
54000000, { 0x091c, 0x091c, 0x06dc },
}, {
58400000, { 0x091c, 0x06dc, 0x06dc },
}, {
72000000, { 0x06dc, 0x06dc, 0x091c },
}, {
74250000, { 0x06dc, 0x0b5c, 0x091c },
}, {
118800000, { 0x091c, 0x091c, 0x06dc },
}, {
216000000, { 0x06dc, 0x0b5c, 0x091c },
}, {
~0UL, { 0x0000, 0x0000, 0x0000 },
},
};
/*
* Resistance term 133Ohm Cfg
* PREEMP config 0.00
* TX/CK level 10
*/
static const struct dw_hdmi_phy_config imx_phy_config[] = {
/*pixelclk symbol term vlev */
{ 148500000, 0x800d, 0x0005, 0x01ad},
{ ~0UL, 0x0000, 0x0000, 0x0000}
};
static int dw_hdmi_imx_parse_dt(struct imx_hdmi *hdmi)
{
struct device_node *np = hdmi->dev->of_node;
hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "gpr");
if (IS_ERR(hdmi->regmap)) {
dev_err(hdmi->dev, "Unable to get gpr\n");
return PTR_ERR(hdmi->regmap);
}
return 0;
}
static void dw_hdmi_imx_encoder_disable(struct drm_encoder *encoder)
{
}
static bool dw_hdmi_imx_encoder_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adj_mode)
{
return true;
}
static void dw_hdmi_imx_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adj_mode)
{
}
static void dw_hdmi_imx_encoder_commit(struct drm_encoder *encoder)
{
struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder);
int mux = imx_drm_encoder_get_mux_id(hdmi->dev->of_node, encoder);
regmap_update_bits(hdmi->regmap, IOMUXC_GPR3,
IMX6Q_GPR3_HDMI_MUX_CTL_MASK,
mux << IMX6Q_GPR3_HDMI_MUX_CTL_SHIFT);
}
static void dw_hdmi_imx_encoder_prepare(struct drm_encoder *encoder)
{
imx_drm_set_bus_format(encoder, MEDIA_BUS_FMT_RGB888_1X24);
}
static struct drm_encoder_helper_funcs dw_hdmi_imx_encoder_helper_funcs = {
.mode_fixup = dw_hdmi_imx_encoder_mode_fixup,
.mode_set = dw_hdmi_imx_encoder_mode_set,
.prepare = dw_hdmi_imx_encoder_prepare,
.commit = dw_hdmi_imx_encoder_commit,
.disable = dw_hdmi_imx_encoder_disable,
};
static struct drm_encoder_funcs dw_hdmi_imx_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
static enum drm_mode_status imx6q_hdmi_mode_valid(struct drm_connector *con,
struct drm_display_mode *mode)
{
if (mode->clock < 13500)
return MODE_CLOCK_LOW;
if (mode->clock > 266000)
return MODE_CLOCK_HIGH;
return MODE_OK;
}
static enum drm_mode_status imx6dl_hdmi_mode_valid(struct drm_connector *con,
struct drm_display_mode *mode)
{
if (mode->clock < 13500)
return MODE_CLOCK_LOW;
if (mode->clock > 270000)
return MODE_CLOCK_HIGH;
return MODE_OK;
}
static struct dw_hdmi_plat_data imx6q_hdmi_drv_data = {
.mpll_cfg = imx_mpll_cfg,
.cur_ctr = imx_cur_ctr,
.phy_config = imx_phy_config,
.dev_type = IMX6Q_HDMI,
.mode_valid = imx6q_hdmi_mode_valid,
};
static struct dw_hdmi_plat_data imx6dl_hdmi_drv_data = {
.mpll_cfg = imx_mpll_cfg,
.cur_ctr = imx_cur_ctr,
.phy_config = imx_phy_config,
.dev_type = IMX6DL_HDMI,
.mode_valid = imx6dl_hdmi_mode_valid,
};
static const struct of_device_id dw_hdmi_imx_dt_ids[] = {
{ .compatible = "fsl,imx6q-hdmi",
.data = &imx6q_hdmi_drv_data
}, {
.compatible = "fsl,imx6dl-hdmi",
.data = &imx6dl_hdmi_drv_data
},
{},
};
MODULE_DEVICE_TABLE(of, dw_hdmi_imx_dt_ids);
static int dw_hdmi_imx_bind(struct device *dev, struct device *master,
void *data)
{
struct platform_device *pdev = to_platform_device(dev);
const struct dw_hdmi_plat_data *plat_data;
const struct of_device_id *match;
struct drm_device *drm = data;
struct drm_encoder *encoder;
struct imx_hdmi *hdmi;
struct resource *iores;
int irq;
int ret;
if (!pdev->dev.of_node)
return -ENODEV;
hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
if (!hdmi)
return -ENOMEM;
match = of_match_node(dw_hdmi_imx_dt_ids, pdev->dev.of_node);
plat_data = match->data;
hdmi->dev = &pdev->dev;
encoder = &hdmi->encoder;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!iores)
return -ENXIO;
platform_set_drvdata(pdev, hdmi);
encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
/*
* If we failed to find the CRTC(s) which this encoder is
* supposed to be connected to, it's because the CRTC has
* not been registered yet. Defer probing, and hope that
* the required CRTC is added later.
*/
if (encoder->possible_crtcs == 0)
return -EPROBE_DEFER;
ret = dw_hdmi_imx_parse_dt(hdmi);
if (ret < 0)
return ret;
drm_encoder_helper_add(encoder, &dw_hdmi_imx_encoder_helper_funcs);
drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs,
DRM_MODE_ENCODER_TMDS);
return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data);
}
static void dw_hdmi_imx_unbind(struct device *dev, struct device *master,
void *data)
{
return dw_hdmi_unbind(dev, master, data);
}
static const struct component_ops dw_hdmi_imx_ops = {
.bind = dw_hdmi_imx_bind,
.unbind = dw_hdmi_imx_unbind,
};
static int dw_hdmi_imx_probe(struct platform_device *pdev)
{
return component_add(&pdev->dev, &dw_hdmi_imx_ops);
}
static int dw_hdmi_imx_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &dw_hdmi_imx_ops);
return 0;
}
static struct platform_driver dw_hdmi_imx_platform_driver = {
.probe = dw_hdmi_imx_probe,
.remove = dw_hdmi_imx_remove,
.driver = {
.name = "dwhdmi-imx",
.of_match_table = dw_hdmi_imx_dt_ids,
},
};
module_platform_driver(dw_hdmi_imx_platform_driver);
MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>");
MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
MODULE_DESCRIPTION("IMX6 Specific DW-HDMI Driver Extension");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:dwhdmi-imx");
|
