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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* RZ/G2L Display Unit DRM driver
*
* Copyright (C) 2023 Renesas Electronics Corporation
*
* Based on rcar_du_drv.c
*/
#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_generic.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_probe_helper.h>
#include "rzg2l_du_drv.h"
#include "rzg2l_du_kms.h"
/* -----------------------------------------------------------------------------
* Device Information
*/
static const struct rzg2l_du_device_info rzg2l_du_r9a07g044_info = {
.channels_mask = BIT(0),
.routes = {
[RZG2L_DU_OUTPUT_DSI0] = {
.possible_outputs = BIT(0),
.port = 0,
},
[RZG2L_DU_OUTPUT_DPAD0] = {
.possible_outputs = BIT(0),
.port = 1,
}
}
};
static const struct of_device_id rzg2l_du_of_table[] = {
{ .compatible = "renesas,r9a07g044-du", .data = &rzg2l_du_r9a07g044_info },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, rzg2l_du_of_table);
const char *rzg2l_du_output_name(enum rzg2l_du_output output)
{
static const char * const names[] = {
[RZG2L_DU_OUTPUT_DSI0] = "DSI0",
[RZG2L_DU_OUTPUT_DPAD0] = "DPAD0"
};
if (output >= ARRAY_SIZE(names))
return "UNKNOWN";
return names[output];
}
/* -----------------------------------------------------------------------------
* DRM operations
*/
DEFINE_DRM_GEM_DMA_FOPS(rzg2l_du_fops);
static const struct drm_driver rzg2l_du_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
.dumb_create = rzg2l_du_dumb_create,
.fops = &rzg2l_du_fops,
.name = "rzg2l-du",
.desc = "Renesas RZ/G2L Display Unit",
.date = "20230410",
.major = 1,
.minor = 0,
};
/* -----------------------------------------------------------------------------
* Platform driver
*/
static void rzg2l_du_remove(struct platform_device *pdev)
{
struct rzg2l_du_device *rcdu = platform_get_drvdata(pdev);
struct drm_device *ddev = &rcdu->ddev;
drm_dev_unregister(ddev);
drm_atomic_helper_shutdown(ddev);
drm_kms_helper_poll_fini(ddev);
}
static void rzg2l_du_shutdown(struct platform_device *pdev)
{
struct rzg2l_du_device *rcdu = platform_get_drvdata(pdev);
drm_atomic_helper_shutdown(&rcdu->ddev);
}
static int rzg2l_du_probe(struct platform_device *pdev)
{
struct rzg2l_du_device *rcdu;
int ret;
if (drm_firmware_drivers_only())
return -ENODEV;
/* Allocate and initialize the RZ/G2L device structure. */
rcdu = devm_drm_dev_alloc(&pdev->dev, &rzg2l_du_driver,
struct rzg2l_du_device, ddev);
if (IS_ERR(rcdu))
return PTR_ERR(rcdu);
rcdu->dev = &pdev->dev;
rcdu->info = of_device_get_match_data(rcdu->dev);
platform_set_drvdata(pdev, rcdu);
/* I/O resources */
rcdu->mmio = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(rcdu->mmio))
return PTR_ERR(rcdu->mmio);
ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (ret)
return ret;
/* DRM/KMS objects */
ret = rzg2l_du_modeset_init(rcdu);
if (ret < 0) {
/*
* Don't use dev_err_probe(), as it would overwrite the probe
* deferral reason recorded in rzg2l_du_modeset_init().
*/
if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev,
"failed to initialize DRM/KMS (%d)\n", ret);
goto error;
}
/*
* Register the DRM device with the core and the connectors with
* sysfs.
*/
ret = drm_dev_register(&rcdu->ddev, 0);
if (ret)
goto error;
drm_info(&rcdu->ddev, "Device %s probed\n", dev_name(&pdev->dev));
drm_fbdev_generic_setup(&rcdu->ddev, 32);
return 0;
error:
drm_kms_helper_poll_fini(&rcdu->ddev);
return ret;
}
static struct platform_driver rzg2l_du_platform_driver = {
.probe = rzg2l_du_probe,
.remove_new = rzg2l_du_remove,
.shutdown = rzg2l_du_shutdown,
.driver = {
.name = "rzg2l-du",
.of_match_table = rzg2l_du_of_table,
},
};
module_platform_driver(rzg2l_du_platform_driver);
MODULE_AUTHOR("Biju Das <biju.das.jz@bp.renesas.com>");
MODULE_DESCRIPTION("Renesas RZ/G2L Display Unit DRM Driver");
MODULE_LICENSE("GPL");
|
