Merge remote-tracking branches 'asoc/topic/fsl-spdif', 'asoc/topic/hdmi', 'asoc/topic...
[linux-2.6-block.git] / drivers / gpu / drm / omapdrm / dss / hdmi_wp.c
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1/*
2 * HDMI wrapper
3 *
4 * Copyright (C) 2013 Texas Instruments Incorporated
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
9 */
10
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11#define DSS_SUBSYS_NAME "HDMIWP"
12
f382d9eb 13#include <linux/kernel.h>
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14#include <linux/err.h>
15#include <linux/io.h>
16#include <linux/platform_device.h>
2d802453 17#include <linux/seq_file.h>
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18#include <video/omapdss.h>
19
20#include "dss.h"
ef26958a 21#include "hdmi.h"
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22
23void hdmi_wp_dump(struct hdmi_wp_data *wp, struct seq_file *s)
24{
25#define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, hdmi_read_reg(wp->base, r))
26
27 DUMPREG(HDMI_WP_REVISION);
28 DUMPREG(HDMI_WP_SYSCONFIG);
29 DUMPREG(HDMI_WP_IRQSTATUS_RAW);
30 DUMPREG(HDMI_WP_IRQSTATUS);
31 DUMPREG(HDMI_WP_IRQENABLE_SET);
32 DUMPREG(HDMI_WP_IRQENABLE_CLR);
33 DUMPREG(HDMI_WP_IRQWAKEEN);
34 DUMPREG(HDMI_WP_PWR_CTRL);
35 DUMPREG(HDMI_WP_DEBOUNCE);
36 DUMPREG(HDMI_WP_VIDEO_CFG);
37 DUMPREG(HDMI_WP_VIDEO_SIZE);
38 DUMPREG(HDMI_WP_VIDEO_TIMING_H);
39 DUMPREG(HDMI_WP_VIDEO_TIMING_V);
42116517 40 DUMPREG(HDMI_WP_CLK);
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41 DUMPREG(HDMI_WP_AUDIO_CFG);
42 DUMPREG(HDMI_WP_AUDIO_CFG2);
43 DUMPREG(HDMI_WP_AUDIO_CTRL);
44 DUMPREG(HDMI_WP_AUDIO_DATA);
45}
46
47u32 hdmi_wp_get_irqstatus(struct hdmi_wp_data *wp)
48{
49 return hdmi_read_reg(wp->base, HDMI_WP_IRQSTATUS);
50}
51
52void hdmi_wp_set_irqstatus(struct hdmi_wp_data *wp, u32 irqstatus)
53{
54 hdmi_write_reg(wp->base, HDMI_WP_IRQSTATUS, irqstatus);
55 /* flush posted write */
56 hdmi_read_reg(wp->base, HDMI_WP_IRQSTATUS);
57}
58
59void hdmi_wp_set_irqenable(struct hdmi_wp_data *wp, u32 mask)
60{
61 hdmi_write_reg(wp->base, HDMI_WP_IRQENABLE_SET, mask);
62}
63
64void hdmi_wp_clear_irqenable(struct hdmi_wp_data *wp, u32 mask)
65{
66 hdmi_write_reg(wp->base, HDMI_WP_IRQENABLE_CLR, mask);
67}
68
69/* PHY_PWR_CMD */
70int hdmi_wp_set_phy_pwr(struct hdmi_wp_data *wp, enum hdmi_phy_pwr val)
71{
72 /* Return if already the state */
73 if (REG_GET(wp->base, HDMI_WP_PWR_CTRL, 5, 4) == val)
74 return 0;
75
76 /* Command for power control of HDMI PHY */
77 REG_FLD_MOD(wp->base, HDMI_WP_PWR_CTRL, val, 7, 6);
78
79 /* Status of the power control of HDMI PHY */
80 if (hdmi_wait_for_bit_change(wp->base, HDMI_WP_PWR_CTRL, 5, 4, val)
81 != val) {
ac9f2421 82 DSSERR("Failed to set PHY power mode to %d\n", val);
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83 return -ETIMEDOUT;
84 }
85
86 return 0;
87}
88
89/* PLL_PWR_CMD */
90int hdmi_wp_set_pll_pwr(struct hdmi_wp_data *wp, enum hdmi_pll_pwr val)
91{
92 /* Command for power control of HDMI PLL */
93 REG_FLD_MOD(wp->base, HDMI_WP_PWR_CTRL, val, 3, 2);
94
95 /* wait till PHY_PWR_STATUS is set */
96 if (hdmi_wait_for_bit_change(wp->base, HDMI_WP_PWR_CTRL, 1, 0, val)
97 != val) {
ac9f2421 98 DSSERR("Failed to set PLL_PWR_STATUS\n");
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99 return -ETIMEDOUT;
100 }
101
102 return 0;
103}
104
105int hdmi_wp_video_start(struct hdmi_wp_data *wp)
106{
107 REG_FLD_MOD(wp->base, HDMI_WP_VIDEO_CFG, true, 31, 31);
108
109 return 0;
110}
111
112void hdmi_wp_video_stop(struct hdmi_wp_data *wp)
113{
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114 int i;
115
116 hdmi_write_reg(wp->base, HDMI_WP_IRQSTATUS, HDMI_IRQ_VIDEO_FRAME_DONE);
117
f382d9eb 118 REG_FLD_MOD(wp->base, HDMI_WP_VIDEO_CFG, false, 31, 31);
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119
120 for (i = 0; i < 50; ++i) {
121 u32 v;
122
123 msleep(20);
124
125 v = hdmi_read_reg(wp->base, HDMI_WP_IRQSTATUS_RAW);
126 if (v & HDMI_IRQ_VIDEO_FRAME_DONE)
127 return;
128 }
129
130 DSSERR("no HDMI FRAMEDONE when disabling output\n");
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131}
132
133void hdmi_wp_video_config_format(struct hdmi_wp_data *wp,
134 struct hdmi_video_format *video_fmt)
135{
136 u32 l = 0;
137
138 REG_FLD_MOD(wp->base, HDMI_WP_VIDEO_CFG, video_fmt->packing_mode,
139 10, 8);
140
141 l |= FLD_VAL(video_fmt->y_res, 31, 16);
142 l |= FLD_VAL(video_fmt->x_res, 15, 0);
143 hdmi_write_reg(wp->base, HDMI_WP_VIDEO_SIZE, l);
144}
145
146void hdmi_wp_video_config_interface(struct hdmi_wp_data *wp,
147 struct omap_video_timings *timings)
148{
149 u32 r;
150 bool vsync_pol, hsync_pol;
ac9f2421 151 DSSDBG("Enter hdmi_wp_video_config_interface\n");
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152
153 vsync_pol = timings->vsync_level == OMAPDSS_SIG_ACTIVE_HIGH;
154 hsync_pol = timings->hsync_level == OMAPDSS_SIG_ACTIVE_HIGH;
155
156 r = hdmi_read_reg(wp->base, HDMI_WP_VIDEO_CFG);
157 r = FLD_MOD(r, vsync_pol, 7, 7);
158 r = FLD_MOD(r, hsync_pol, 6, 6);
159 r = FLD_MOD(r, timings->interlace, 3, 3);
160 r = FLD_MOD(r, 1, 1, 0); /* HDMI_TIMING_MASTER_24BIT */
161 hdmi_write_reg(wp->base, HDMI_WP_VIDEO_CFG, r);
162}
163
164void hdmi_wp_video_config_timing(struct hdmi_wp_data *wp,
165 struct omap_video_timings *timings)
166{
167 u32 timing_h = 0;
168 u32 timing_v = 0;
c92e8727 169 unsigned hsw_offset = 1;
f382d9eb 170
ac9f2421 171 DSSDBG("Enter hdmi_wp_video_config_timing\n");
f382d9eb 172
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173 /*
174 * On OMAP4 and OMAP5 ES1 the HSW field is programmed as is. On OMAP5
175 * ES2+ (including DRA7/AM5 SoCs) HSW field is programmed to hsw-1.
176 * However, we don't support OMAP5 ES1 at all, so we can just check for
177 * OMAP4 here.
178 */
179 if (omapdss_get_version() == OMAPDSS_VER_OMAP4430_ES1 ||
180 omapdss_get_version() == OMAPDSS_VER_OMAP4430_ES2 ||
181 omapdss_get_version() == OMAPDSS_VER_OMAP4)
182 hsw_offset = 0;
183
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184 timing_h |= FLD_VAL(timings->hbp, 31, 20);
185 timing_h |= FLD_VAL(timings->hfp, 19, 8);
c92e8727 186 timing_h |= FLD_VAL(timings->hsw - hsw_offset, 7, 0);
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187 hdmi_write_reg(wp->base, HDMI_WP_VIDEO_TIMING_H, timing_h);
188
189 timing_v |= FLD_VAL(timings->vbp, 31, 20);
190 timing_v |= FLD_VAL(timings->vfp, 19, 8);
191 timing_v |= FLD_VAL(timings->vsw, 7, 0);
192 hdmi_write_reg(wp->base, HDMI_WP_VIDEO_TIMING_V, timing_v);
193}
194
195void hdmi_wp_init_vid_fmt_timings(struct hdmi_video_format *video_fmt,
196 struct omap_video_timings *timings, struct hdmi_config *param)
197{
ac9f2421 198 DSSDBG("Enter hdmi_wp_video_init_format\n");
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199
200 video_fmt->packing_mode = HDMI_PACK_10b_RGB_YUV444;
201 video_fmt->y_res = param->timings.y_res;
202 video_fmt->x_res = param->timings.x_res;
203
204 timings->hbp = param->timings.hbp;
205 timings->hfp = param->timings.hfp;
206 timings->hsw = param->timings.hsw;
207 timings->vbp = param->timings.vbp;
208 timings->vfp = param->timings.vfp;
209 timings->vsw = param->timings.vsw;
b2af8092 210
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211 timings->vsync_level = param->timings.vsync_level;
212 timings->hsync_level = param->timings.hsync_level;
213 timings->interlace = param->timings.interlace;
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214 timings->double_pixel = param->timings.double_pixel;
215
216 if (param->timings.interlace) {
217 video_fmt->y_res /= 2;
218 timings->vbp /= 2;
219 timings->vfp /= 2;
220 timings->vsw /= 2;
221 }
222
223 if (param->timings.double_pixel) {
224 video_fmt->x_res *= 2;
225 timings->hfp *= 2;
226 timings->hsw *= 2;
227 timings->hbp *= 2;
228 }
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229}
230
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231void hdmi_wp_audio_config_format(struct hdmi_wp_data *wp,
232 struct hdmi_audio_format *aud_fmt)
233{
234 u32 r;
235
236 DSSDBG("Enter hdmi_wp_audio_config_format\n");
237
238 r = hdmi_read_reg(wp->base, HDMI_WP_AUDIO_CFG);
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239 if (omapdss_get_version() == OMAPDSS_VER_OMAP4430_ES1 ||
240 omapdss_get_version() == OMAPDSS_VER_OMAP4430_ES2 ||
241 omapdss_get_version() == OMAPDSS_VER_OMAP4) {
242 r = FLD_MOD(r, aud_fmt->stereo_channels, 26, 24);
243 r = FLD_MOD(r, aud_fmt->active_chnnls_msk, 23, 16);
244 }
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245 r = FLD_MOD(r, aud_fmt->en_sig_blk_strt_end, 5, 5);
246 r = FLD_MOD(r, aud_fmt->type, 4, 4);
247 r = FLD_MOD(r, aud_fmt->justification, 3, 3);
248 r = FLD_MOD(r, aud_fmt->sample_order, 2, 2);
249 r = FLD_MOD(r, aud_fmt->samples_per_word, 1, 1);
250 r = FLD_MOD(r, aud_fmt->sample_size, 0, 0);
251 hdmi_write_reg(wp->base, HDMI_WP_AUDIO_CFG, r);
252}
253
254void hdmi_wp_audio_config_dma(struct hdmi_wp_data *wp,
255 struct hdmi_audio_dma *aud_dma)
256{
257 u32 r;
258
259 DSSDBG("Enter hdmi_wp_audio_config_dma\n");
260
261 r = hdmi_read_reg(wp->base, HDMI_WP_AUDIO_CFG2);
262 r = FLD_MOD(r, aud_dma->transfer_size, 15, 8);
263 r = FLD_MOD(r, aud_dma->block_size, 7, 0);
264 hdmi_write_reg(wp->base, HDMI_WP_AUDIO_CFG2, r);
265
266 r = hdmi_read_reg(wp->base, HDMI_WP_AUDIO_CTRL);
267 r = FLD_MOD(r, aud_dma->mode, 9, 9);
268 r = FLD_MOD(r, aud_dma->fifo_threshold, 8, 0);
269 hdmi_write_reg(wp->base, HDMI_WP_AUDIO_CTRL, r);
270}
271
272int hdmi_wp_audio_enable(struct hdmi_wp_data *wp, bool enable)
273{
274 REG_FLD_MOD(wp->base, HDMI_WP_AUDIO_CTRL, enable, 31, 31);
275
276 return 0;
277}
278
279int hdmi_wp_audio_core_req_enable(struct hdmi_wp_data *wp, bool enable)
280{
281 REG_FLD_MOD(wp->base, HDMI_WP_AUDIO_CTRL, enable, 30, 30);
282
283 return 0;
284}
f382d9eb 285
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286int hdmi_wp_init(struct platform_device *pdev, struct hdmi_wp_data *wp)
287{
288 struct resource *res;
f382d9eb 289
77601507 290 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wp");
f382d9eb 291 if (!res) {
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292 DSSERR("can't get WP mem resource\n");
293 return -EINVAL;
f382d9eb 294 }
58652163 295 wp->phys_base = res->start;
f382d9eb 296
fc2daf3b 297 wp->base = devm_ioremap_resource(&pdev->dev, res);
2b22df83 298 if (IS_ERR(wp->base)) {
f382d9eb 299 DSSERR("can't ioremap HDMI WP\n");
2b22df83 300 return PTR_ERR(wp->base);
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301 }
302
303 return 0;
304}
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305
306phys_addr_t hdmi_wp_get_audio_dma_addr(struct hdmi_wp_data *wp)
307{
308 return wp->phys_base + HDMI_WP_AUDIO_DATA;
309}