drivers/video/fbdev/omap2/dss/hdmi_wp.c

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