aboutsummaryrefslogtreecommitdiff
path: root/drivers/gpu/host1x/dev.c
blob: 2529908d304bd851fdd9c2d0b9d71471e5d69b20 (plain)
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
/*
 * Tegra host1x driver
 *
 * Copyright (c) 2010-2013, NVIDIA Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <linux/module.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/clk.h>
#include <linux/io.h>

#define CREATE_TRACE_POINTS
#include <trace/events/host1x.h>

#include "bus.h"
#include "dev.h"
#include "intr.h"
#include "channel.h"
#include "debug.h"
#include "hw/host1x01.h"
#include "hw/host1x02.h"
#include "hw/host1x04.h"

void host1x_sync_writel(struct host1x *host1x, u32 v, u32 r)
{
	void __iomem *sync_regs = host1x->regs + host1x->info->sync_offset;

	writel(v, sync_regs + r);
}

u32 host1x_sync_readl(struct host1x *host1x, u32 r)
{
	void __iomem *sync_regs = host1x->regs + host1x->info->sync_offset;

	return readl(sync_regs + r);
}

void host1x_ch_writel(struct host1x_channel *ch, u32 v, u32 r)
{
	writel(v, ch->regs + r);
}

u32 host1x_ch_readl(struct host1x_channel *ch, u32 r)
{
	return readl(ch->regs + r);
}

static const struct host1x_info host1x01_info = {
	.nb_channels	= 8,
	.nb_pts		= 32,
	.nb_mlocks	= 16,
	.nb_bases	= 8,
	.init		= host1x01_init,
	.sync_offset	= 0x3000,
};

static const struct host1x_info host1x02_info = {
	.nb_channels = 9,
	.nb_pts = 32,
	.nb_mlocks = 16,
	.nb_bases = 12,
	.init = host1x02_init,
	.sync_offset = 0x3000,
};

static const struct host1x_info host1x04_info = {
	.nb_channels = 12,
	.nb_pts = 192,
	.nb_mlocks = 16,
	.nb_bases = 64,
	.init = host1x04_init,
	.sync_offset = 0x2100,
};

static struct of_device_id host1x_of_match[] = {
	{ .compatible = "nvidia,tegra124-host1x", .data = &host1x04_info, },
	{ .compatible = "nvidia,tegra114-host1x", .data = &host1x02_info, },
	{ .compatible = "nvidia,tegra30-host1x", .data = &host1x01_info, },
	{ .compatible = "nvidia,tegra20-host1x", .data = &host1x01_info, },
	{ },
};
MODULE_DEVICE_TABLE(of, host1x_of_match);

static int host1x_probe(struct platform_device *pdev)
{
	const struct of_device_id *id;
	struct host1x *host;
	struct resource *regs;
	int syncpt_irq;
	int err;

	id = of_match_device(host1x_of_match, &pdev->dev);
	if (!id)
		return -EINVAL;

	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!regs) {
		dev_err(&pdev->dev, "failed to get registers\n");
		return -ENXIO;
	}

	syncpt_irq = platform_get_irq(pdev, 0);
	if (syncpt_irq < 0) {
		dev_err(&pdev->dev, "failed to get IRQ\n");
		return -ENXIO;
	}

	host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL);
	if (!host)
		return -ENOMEM;

	mutex_init(&host->devices_lock);
	INIT_LIST_HEAD(&host->devices);
	INIT_LIST_HEAD(&host->list);
	host->dev = &pdev->dev;
	host->info = id->data;

	/* set common host1x device data */
	platform_set_drvdata(pdev, host);

	host->regs = devm_ioremap_resource(&pdev->dev, regs);
	if (IS_ERR(host->regs))
		return PTR_ERR(host->regs);

	if (host->info->init) {
		err = host->info->init(host);
		if (err)
			return err;
	}

	host->clk = devm_clk_get(&pdev->dev, NULL);
	if (IS_ERR(host->clk)) {
		dev_err(&pdev->dev, "failed to get clock\n");
		err = PTR_ERR(host->clk);
		return err;
	}

	err = host1x_channel_list_init(host);
	if (err) {
		dev_err(&pdev->dev, "failed to initialize channel list\n");
		return err;
	}

	err = clk_prepare_enable(host->clk);
	if (err < 0) {
		dev_err(&pdev->dev, "failed to enable clock\n");
		return err;
	}

	err = host1x_syncpt_init(host);
	if (err) {
		dev_err(&pdev->dev, "failed to initialize syncpts\n");
		goto fail_unprepare_disable;
	}

	err = host1x_intr_init(host, syncpt_irq);
	if (err) {
		dev_err(&pdev->dev, "failed to initialize interrupts\n");
		goto fail_deinit_syncpt;
	}

	host1x_debug_init(host);

	err = host1x_register(host);
	if (err < 0)
		goto fail_deinit_intr;

	return 0;

fail_deinit_intr:
	host1x_intr_deinit(host);
fail_deinit_syncpt:
	host1x_syncpt_deinit(host);
fail_unprepare_disable:
	clk_disable_unprepare(host->clk);
	return err;
}

static int host1x_remove(struct platform_device *pdev)
{
	struct host1x *host = platform_get_drvdata(pdev);

	host1x_unregister(host);
	host1x_intr_deinit(host);
	host1x_syncpt_deinit(host);
	clk_disable_unprepare(host->clk);

	return 0;
}

static struct platform_driver tegra_host1x_driver = {
	.driver = {
		.name = "tegra-host1x",
		.of_match_table = host1x_of_match,
	},
	.probe = host1x_probe,
	.remove = host1x_remove,
};

static int __init tegra_host1x_init(void)
{
	int err;

	err = host1x_bus_init();
	if (err < 0)
		return err;

	err = platform_driver_register(&tegra_host1x_driver);
	if (err < 0)
		goto unregister_bus;

	err = platform_driver_register(&tegra_mipi_driver);
	if (err < 0)
		goto unregister_host1x;

	return 0;

unregister_host1x:
	platform_driver_unregister(&tegra_host1x_driver);
unregister_bus:
	host1x_bus_exit();
	return err;
}
module_init(tegra_host1x_init);

static void __exit tegra_host1x_exit(void)
{
	platform_driver_unregister(&tegra_mipi_driver);
	platform_driver_unregister(&tegra_host1x_driver);
	host1x_bus_exit();
}
module_exit(tegra_host1x_exit);

MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
MODULE_AUTHOR("Terje Bergstrom <tbergstrom@nvidia.com>");
MODULE_DESCRIPTION("Host1x driver for Tegra products");
MODULE_LICENSE("GPL");