summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/omapdrm/dss/hdmi_wp.c
blob: 597ec9d87d1dd834e6cfe22686a66974d7daad2a (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
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
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
/*
 * HDMI wrapper
 *
 * Copyright (C) 2013 Texas Instruments Incorporated
 *
 * 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.
 */

#define DSS_SUBSYS_NAME "HDMIWP"

#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/seq_file.h>

#include "omapdss.h"
#include "dss.h"
#include "hdmi.h"

void hdmi_wp_dump(struct hdmi_wp_data *wp, struct seq_file *s)
{
#define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, hdmi_read_reg(wp->base, r))

	DUMPREG(HDMI_WP_REVISION);
	DUMPREG(HDMI_WP_SYSCONFIG);
	DUMPREG(HDMI_WP_IRQSTATUS_RAW);
	DUMPREG(HDMI_WP_IRQSTATUS);
	DUMPREG(HDMI_WP_IRQENABLE_SET);
	DUMPREG(HDMI_WP_IRQENABLE_CLR);
	DUMPREG(HDMI_WP_IRQWAKEEN);
	DUMPREG(HDMI_WP_PWR_CTRL);
	DUMPREG(HDMI_WP_DEBOUNCE);
	DUMPREG(HDMI_WP_VIDEO_CFG);
	DUMPREG(HDMI_WP_VIDEO_SIZE);
	DUMPREG(HDMI_WP_VIDEO_TIMING_H);
	DUMPREG(HDMI_WP_VIDEO_TIMING_V);
	DUMPREG(HDMI_WP_CLK);
	DUMPREG(HDMI_WP_AUDIO_CFG);
	DUMPREG(HDMI_WP_AUDIO_CFG2);
	DUMPREG(HDMI_WP_AUDIO_CTRL);
	DUMPREG(HDMI_WP_AUDIO_DATA);
}

u32 hdmi_wp_get_irqstatus(struct hdmi_wp_data *wp)
{
	return hdmi_read_reg(wp->base, HDMI_WP_IRQSTATUS);
}

void hdmi_wp_set_irqstatus(struct hdmi_wp_data *wp, u32 irqstatus)
{
	hdmi_write_reg(wp->base, HDMI_WP_IRQSTATUS, irqstatus);
	/* flush posted write */
	hdmi_read_reg(wp->base, HDMI_WP_IRQSTATUS);
}

void hdmi_wp_set_irqenable(struct hdmi_wp_data *wp, u32 mask)
{
	hdmi_write_reg(wp->base, HDMI_WP_IRQENABLE_SET, mask);
}

void hdmi_wp_clear_irqenable(struct hdmi_wp_data *wp, u32 mask)
{
	hdmi_write_reg(wp->base, HDMI_WP_IRQENABLE_CLR, mask);
}

/* PHY_PWR_CMD */
int hdmi_wp_set_phy_pwr(struct hdmi_wp_data *wp, enum hdmi_phy_pwr val)
{
	/* Return if already the state */
	if (REG_GET(wp->base, HDMI_WP_PWR_CTRL, 5, 4) == val)
		return 0;

	/* Command for power control of HDMI PHY */
	REG_FLD_MOD(wp->base, HDMI_WP_PWR_CTRL, val, 7, 6);

	/* Status of the power control of HDMI PHY */
	if (hdmi_wait_for_bit_change(wp->base, HDMI_WP_PWR_CTRL, 5, 4, val)
			!= val) {
		DSSERR("Failed to set PHY power mode to %d\n", val);
		return -ETIMEDOUT;
	}

	return 0;
}

/* PLL_PWR_CMD */
int hdmi_wp_set_pll_pwr(struct hdmi_wp_data *wp, enum hdmi_pll_pwr val)
{
	/* Command for power control of HDMI PLL */
	REG_FLD_MOD(wp->base, HDMI_WP_PWR_CTRL, val, 3, 2);

	/* wait till PHY_PWR_STATUS is set */
	if (hdmi_wait_for_bit_change(wp->base, HDMI_WP_PWR_CTRL, 1, 0, val)
			!= val) {
		DSSERR("Failed to set PLL_PWR_STATUS\n");
		return -ETIMEDOUT;
	}

	return 0;
}

int hdmi_wp_video_start(struct hdmi_wp_data *wp)
{
	REG_FLD_MOD(wp->base, HDMI_WP_VIDEO_CFG, true, 31, 31);

	return 0;
}

void hdmi_wp_video_stop(struct hdmi_wp_data *wp)
{
	int i;

	hdmi_write_reg(wp->base, HDMI_WP_IRQSTATUS, HDMI_IRQ_VIDEO_FRAME_DONE);

	REG_FLD_MOD(wp->base, HDMI_WP_VIDEO_CFG, false, 31, 31);

	for (i = 0; i < 50; ++i) {
		u32 v;

		msleep(20);

		v = hdmi_read_reg(wp->base, HDMI_WP_IRQSTATUS_RAW);
		if (v & HDMI_IRQ_VIDEO_FRAME_DONE)
			return;
	}

	DSSERR("no HDMI FRAMEDONE when disabling output\n");
}

void hdmi_wp_video_config_format(struct hdmi_wp_data *wp,
		struct hdmi_video_format *video_fmt)
{
	u32 l = 0;

	REG_FLD_MOD(wp->base, HDMI_WP_VIDEO_CFG, video_fmt->packing_mode,
		10, 8);

	l |= FLD_VAL(video_fmt->y_res, 31, 16);
	l |= FLD_VAL(video_fmt->x_res, 15, 0);
	hdmi_write_reg(wp->base, HDMI_WP_VIDEO_SIZE, l);
}

void hdmi_wp_video_config_interface(struct hdmi_wp_data *wp,
				    struct videomode *vm)
{
	u32 r;
	bool vsync_inv, hsync_inv;
	DSSDBG("Enter hdmi_wp_video_config_interface\n");

	vsync_inv = !!(vm->flags & DISPLAY_FLAGS_VSYNC_LOW);
	hsync_inv = !!(vm->flags & DISPLAY_FLAGS_HSYNC_LOW);

	r = hdmi_read_reg(wp->base, HDMI_WP_VIDEO_CFG);
	r = FLD_MOD(r, 1, 7, 7);	/* VSYNC_POL to dispc active high */
	r = FLD_MOD(r, 1, 6, 6);	/* HSYNC_POL to dispc active high */
	r = FLD_MOD(r, vsync_inv, 5, 5);	/* CORE_VSYNC_INV */
	r = FLD_MOD(r, hsync_inv, 4, 4);	/* CORE_HSYNC_INV */
	r = FLD_MOD(r, !!(vm->flags & DISPLAY_FLAGS_INTERLACED), 3, 3);
	r = FLD_MOD(r, 1, 1, 0); /* HDMI_TIMING_MASTER_24BIT */
	hdmi_write_reg(wp->base, HDMI_WP_VIDEO_CFG, r);
}

void hdmi_wp_video_config_timing(struct hdmi_wp_data *wp,
				 struct videomode *vm)
{
	u32 timing_h = 0;
	u32 timing_v = 0;
	unsigned hsync_len_offset = 1;

	DSSDBG("Enter hdmi_wp_video_config_timing\n");

	/*
	 * On OMAP4 and OMAP5 ES1 the HSW field is programmed as is. On OMAP5
	 * ES2+ (including DRA7/AM5 SoCs) HSW field is programmed to hsync_len-1.
	 * However, we don't support OMAP5 ES1 at all, so we can just check for
	 * OMAP4 here.
	 */
	if (omapdss_get_version() == OMAPDSS_VER_OMAP4430_ES1 ||
	    omapdss_get_version() == OMAPDSS_VER_OMAP4430_ES2 ||
	    omapdss_get_version() == OMAPDSS_VER_OMAP4)
		hsync_len_offset = 0;

	timing_h |= FLD_VAL(vm->hback_porch, 31, 20);
	timing_h |= FLD_VAL(vm->hfront_porch, 19, 8);
	timing_h |= FLD_VAL(vm->hsync_len - hsync_len_offset, 7, 0);
	hdmi_write_reg(wp->base, HDMI_WP_VIDEO_TIMING_H, timing_h);

	timing_v |= FLD_VAL(vm->vback_porch, 31, 20);
	timing_v |= FLD_VAL(vm->vfront_porch, 19, 8);
	timing_v |= FLD_VAL(vm->vsync_len, 7, 0);
	hdmi_write_reg(wp->base, HDMI_WP_VIDEO_TIMING_V, timing_v);
}

void hdmi_wp_init_vid_fmt_timings(struct hdmi_video_format *video_fmt,
		struct videomode *vm, struct hdmi_config *param)
{
	DSSDBG("Enter hdmi_wp_video_init_format\n");

	video_fmt->packing_mode = HDMI_PACK_10b_RGB_YUV444;
	video_fmt->y_res = param->vm.vactive;
	video_fmt->x_res = param->vm.hactive;

	vm->hback_porch = param->vm.hback_porch;
	vm->hfront_porch = param->vm.hfront_porch;
	vm->hsync_len = param->vm.hsync_len;
	vm->vback_porch = param->vm.vback_porch;
	vm->vfront_porch = param->vm.vfront_porch;
	vm->vsync_len = param->vm.vsync_len;

	vm->flags = param->vm.flags;

	if (param->vm.flags & DISPLAY_FLAGS_INTERLACED) {
		video_fmt->y_res /= 2;
		vm->vback_porch /= 2;
		vm->vfront_porch /= 2;
		vm->vsync_len /= 2;
	}

	if (param->vm.flags & DISPLAY_FLAGS_DOUBLECLK) {
		video_fmt->x_res *= 2;
		vm->hfront_porch *= 2;
		vm->hsync_len *= 2;
		vm->hback_porch *= 2;
	}
}

void hdmi_wp_audio_config_format(struct hdmi_wp_data *wp,
		struct hdmi_audio_format *aud_fmt)
{
	u32 r;

	DSSDBG("Enter hdmi_wp_audio_config_format\n");

	r = hdmi_read_reg(wp->base, HDMI_WP_AUDIO_CFG);
	if (omapdss_get_version() == OMAPDSS_VER_OMAP4430_ES1 ||
	    omapdss_get_version() == OMAPDSS_VER_OMAP4430_ES2 ||
	    omapdss_get_version() == OMAPDSS_VER_OMAP4) {
		r = FLD_MOD(r, aud_fmt->stereo_channels, 26, 24);
		r = FLD_MOD(r, aud_fmt->active_chnnls_msk, 23, 16);
	}
	r = FLD_MOD(r, aud_fmt->en_sig_blk_strt_end, 5, 5);
	r = FLD_MOD(r, aud_fmt->type, 4, 4);
	r = FLD_MOD(r, aud_fmt->justification, 3, 3);
	r = FLD_MOD(r, aud_fmt->sample_order, 2, 2);
	r = FLD_MOD(r, aud_fmt->samples_per_word, 1, 1);
	r = FLD_MOD(r, aud_fmt->sample_size, 0, 0);
	hdmi_write_reg(wp->base, HDMI_WP_AUDIO_CFG, r);
}

void hdmi_wp_audio_config_dma(struct hdmi_wp_data *wp,
		struct hdmi_audio_dma *aud_dma)
{
	u32 r;

	DSSDBG("Enter hdmi_wp_audio_config_dma\n");

	r = hdmi_read_reg(wp->base, HDMI_WP_AUDIO_CFG2);
	r = FLD_MOD(r, aud_dma->transfer_size, 15, 8);
	r = FLD_MOD(r, aud_dma->block_size, 7, 0);
	hdmi_write_reg(wp->base, HDMI_WP_AUDIO_CFG2, r);

	r = hdmi_read_reg(wp->base, HDMI_WP_AUDIO_CTRL);
	r = FLD_MOD(r, aud_dma->mode, 9, 9);
	r = FLD_MOD(r, aud_dma->fifo_threshold, 8, 0);
	hdmi_write_reg(wp->base, HDMI_WP_AUDIO_CTRL, r);
}

int hdmi_wp_audio_enable(struct hdmi_wp_data *wp, bool enable)
{
	REG_FLD_MOD(wp->base, HDMI_WP_AUDIO_CTRL, enable, 31, 31);

	return 0;
}

int hdmi_wp_audio_core_req_enable(struct hdmi_wp_data *wp, bool enable)
{
	REG_FLD_MOD(wp->base, HDMI_WP_AUDIO_CTRL, enable, 30, 30);

	return 0;
}

int hdmi_wp_init(struct platform_device *pdev, struct hdmi_wp_data *wp)
{
	struct resource *res;

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wp");
	if (!res) {
		DSSERR("can't get WP mem resource\n");
		return -EINVAL;
	}
	wp->phys_base = res->start;

	wp->base = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(wp->base)) {
		DSSERR("can't ioremap HDMI WP\n");
		return PTR_ERR(wp->base);
	}

	return 0;
}

phys_addr_t hdmi_wp_get_audio_dma_addr(struct hdmi_wp_data *wp)
{
	return wp->phys_base + HDMI_WP_AUDIO_DATA;
}
OpenPOWER on IntegriCloud