drivers/video/sh_mobile_hdmi.c

   1 /*
   2  * SH-Mobile High-Definition Multimedia Interface (HDMI) driver
   3  * for SLISHDMI13T and SLIPHDMIT IP cores
   4  *
   5  * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/clk.h>
  13 #include <linux/console.h>
  14 #include <linux/delay.h>
  15 #include <linux/err.h>
  16 #include <linux/init.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/io.h>
  19 #include <linux/module.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/pm_runtime.h>
  22 #include <linux/slab.h>
  23 #include <linux/types.h>
  24 #include <linux/workqueue.h>
  25 #include <sound/soc.h>
  26 #include <sound/soc-dapm.h>
  27 #include <sound/initval.h>
  28
  29 #include <video/sh_mobile_hdmi.h>
  30 #include <video/sh_mobile_lcdc.h>
  31
  32 #include "sh_mobile_lcdcfb.h"
  33
  34 #define HDMI_SYSTEM_CTRL                        0x00 /* System control */
  35 #define HDMI_L_R_DATA_SWAP_CTRL_RPKT            0x01 /* L/R data swap control,
  36                                                         bits 19..16 of 20-bit N for Audio Clock Regeneration packet */
  37 #define HDMI_20_BIT_N_FOR_AUDIO_RPKT_15_8       0x02 /* bits 15..8 of 20-bit N for Audio Clock Regeneration packet */
  38 #define HDMI_20_BIT_N_FOR_AUDIO_RPKT_7_0        0x03 /* bits 7..0 of 20-bit N for Audio Clock Regeneration packet */
  39 #define HDMI_SPDIF_AUDIO_SAMP_FREQ_CTS          0x04 /* SPDIF audio sampling frequency,
  40                                                         bits 19..16 of Internal CTS */
  41 #define HDMI_INTERNAL_CTS_15_8                  0x05 /* bits 15..8 of Internal CTS */
  42 #define HDMI_INTERNAL_CTS_7_0                   0x06 /* bits 7..0 of Internal CTS */
  43 #define HDMI_EXTERNAL_CTS_19_16                 0x07 /* External CTS */
  44 #define HDMI_EXTERNAL_CTS_15_8                  0x08 /* External CTS */
  45 #define HDMI_EXTERNAL_CTS_7_0                   0x09 /* External CTS */
  46 #define HDMI_AUDIO_SETTING_1                    0x0A /* Audio setting.1 */
  47 #define HDMI_AUDIO_SETTING_2                    0x0B /* Audio setting.2 */
  48 #define HDMI_I2S_AUDIO_SET                      0x0C /* I2S audio setting */
  49 #define HDMI_DSD_AUDIO_SET                      0x0D /* DSD audio setting */
  50 #define HDMI_DEBUG_MONITOR_1                    0x0E /* Debug monitor.1 */
  51 #define HDMI_DEBUG_MONITOR_2                    0x0F /* Debug monitor.2 */
  52 #define HDMI_I2S_INPUT_PIN_SWAP                 0x10 /* I2S input pin swap */
  53 #define HDMI_AUDIO_STATUS_BITS_SETTING_1        0x11 /* Audio status bits setting.1 */
  54 #define HDMI_AUDIO_STATUS_BITS_SETTING_2        0x12 /* Audio status bits setting.2 */
  55 #define HDMI_CATEGORY_CODE                      0x13 /* Category code */
  56 #define HDMI_SOURCE_NUM_AUDIO_WORD_LEN          0x14 /* Source number/Audio word length */
  57 #define HDMI_AUDIO_VIDEO_SETTING_1              0x15 /* Audio/Video setting.1 */
  58 #define HDMI_VIDEO_SETTING_1                    0x16 /* Video setting.1 */
  59 #define HDMI_DEEP_COLOR_MODES                   0x17 /* Deep Color Modes */
  60
  61 /* 12 16- and 10-bit Color space conversion parameters: 0x18..0x2f */
  62 #define HDMI_COLOR_SPACE_CONVERSION_PARAMETERS  0x18
  63
  64 #define HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS      0x30 /* External video parameter settings */
  65 #define HDMI_EXTERNAL_H_TOTAL_7_0               0x31 /* External horizontal total (LSB) */
  66 #define HDMI_EXTERNAL_H_TOTAL_11_8              0x32 /* External horizontal total (MSB) */
  67 #define HDMI_EXTERNAL_H_BLANK_7_0               0x33 /* External horizontal blank (LSB) */
  68 #define HDMI_EXTERNAL_H_BLANK_9_8               0x34 /* External horizontal blank (MSB) */
  69 #define HDMI_EXTERNAL_H_DELAY_7_0               0x35 /* External horizontal delay (LSB) */
  70 #define HDMI_EXTERNAL_H_DELAY_9_8               0x36 /* External horizontal delay (MSB) */
  71 #define HDMI_EXTERNAL_H_DURATION_7_0            0x37 /* External horizontal duration (LSB) */
  72 #define HDMI_EXTERNAL_H_DURATION_9_8            0x38 /* External horizontal duration (MSB) */
  73 #define HDMI_EXTERNAL_V_TOTAL_7_0               0x39 /* External vertical total (LSB) */
  74 #define HDMI_EXTERNAL_V_TOTAL_9_8               0x3A /* External vertical total (MSB) */
  75 #define HDMI_AUDIO_VIDEO_SETTING_2              0x3B /* Audio/Video setting.2 */
  76 #define HDMI_EXTERNAL_V_BLANK                   0x3D /* External vertical blank */
  77 #define HDMI_EXTERNAL_V_DELAY                   0x3E /* External vertical delay */
  78 #define HDMI_EXTERNAL_V_DURATION                0x3F /* External vertical duration */
  79 #define HDMI_CTRL_PKT_MANUAL_SEND_CONTROL       0x40 /* Control packet manual send control */
  80 #define HDMI_CTRL_PKT_AUTO_SEND                 0x41 /* Control packet auto send with VSYNC control */
  81 #define HDMI_AUTO_CHECKSUM_OPTION               0x42 /* Auto checksum option */
  82 #define HDMI_VIDEO_SETTING_2                    0x45 /* Video setting.2 */
  83 #define HDMI_OUTPUT_OPTION                      0x46 /* Output option */
  84 #define HDMI_SLIPHDMIT_PARAM_OPTION             0x51 /* SLIPHDMIT parameter option */
  85 #define HDMI_HSYNC_PMENT_AT_EMB_7_0             0x52 /* HSYNC placement at embedded sync (LSB) */
  86 #define HDMI_HSYNC_PMENT_AT_EMB_15_8            0x53 /* HSYNC placement at embedded sync (MSB) */
  87 #define HDMI_VSYNC_PMENT_AT_EMB_7_0             0x54 /* VSYNC placement at embedded sync (LSB) */
  88 #define HDMI_VSYNC_PMENT_AT_EMB_14_8            0x55 /* VSYNC placement at embedded sync (MSB) */
  89 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_1         0x56 /* SLIPHDMIT parameter settings.1 */
  90 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_2         0x57 /* SLIPHDMIT parameter settings.2 */
  91 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_3         0x58 /* SLIPHDMIT parameter settings.3 */
  92 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_5         0x59 /* SLIPHDMIT parameter settings.5 */
  93 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_6         0x5A /* SLIPHDMIT parameter settings.6 */
  94 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_7         0x5B /* SLIPHDMIT parameter settings.7 */
  95 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_8         0x5C /* SLIPHDMIT parameter settings.8 */
  96 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_9         0x5D /* SLIPHDMIT parameter settings.9 */
  97 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_10        0x5E /* SLIPHDMIT parameter settings.10 */
  98 #define HDMI_CTRL_PKT_BUF_INDEX                 0x5F /* Control packet buffer index */
  99 #define HDMI_CTRL_PKT_BUF_ACCESS_HB0            0x60 /* Control packet data buffer access window - HB0 */
 100 #define HDMI_CTRL_PKT_BUF_ACCESS_HB1            0x61 /* Control packet data buffer access window - HB1 */
 101 #define HDMI_CTRL_PKT_BUF_ACCESS_HB2            0x62 /* Control packet data buffer access window - HB2 */
 102 #define HDMI_CTRL_PKT_BUF_ACCESS_PB0            0x63 /* Control packet data buffer access window - PB0 */
 103 #define HDMI_CTRL_PKT_BUF_ACCESS_PB1            0x64 /* Control packet data buffer access window - PB1 */
 104 #define HDMI_CTRL_PKT_BUF_ACCESS_PB2            0x65 /* Control packet data buffer access window - PB2 */
 105 #define HDMI_CTRL_PKT_BUF_ACCESS_PB3            0x66 /* Control packet data buffer access window - PB3 */
 106 #define HDMI_CTRL_PKT_BUF_ACCESS_PB4            0x67 /* Control packet data buffer access window - PB4 */
 107 #define HDMI_CTRL_PKT_BUF_ACCESS_PB5            0x68 /* Control packet data buffer access window - PB5 */
 108 #define HDMI_CTRL_PKT_BUF_ACCESS_PB6            0x69 /* Control packet data buffer access window - PB6 */
 109 #define HDMI_CTRL_PKT_BUF_ACCESS_PB7            0x6A /* Control packet data buffer access window - PB7 */
 110 #define HDMI_CTRL_PKT_BUF_ACCESS_PB8            0x6B /* Control packet data buffer access window - PB8 */
 111 #define HDMI_CTRL_PKT_BUF_ACCESS_PB9            0x6C /* Control packet data buffer access window - PB9 */
 112 #define HDMI_CTRL_PKT_BUF_ACCESS_PB10           0x6D /* Control packet data buffer access window - PB10 */
 113 #define HDMI_CTRL_PKT_BUF_ACCESS_PB11           0x6E /* Control packet data buffer access window - PB11 */
 114 #define HDMI_CTRL_PKT_BUF_ACCESS_PB12           0x6F /* Control packet data buffer access window - PB12 */
 115 #define HDMI_CTRL_PKT_BUF_ACCESS_PB13           0x70 /* Control packet data buffer access window - PB13 */
 116 #define HDMI_CTRL_PKT_BUF_ACCESS_PB14           0x71 /* Control packet data buffer access window - PB14 */
 117 #define HDMI_CTRL_PKT_BUF_ACCESS_PB15           0x72 /* Control packet data buffer access window - PB15 */
 118 #define HDMI_CTRL_PKT_BUF_ACCESS_PB16           0x73 /* Control packet data buffer access window - PB16 */
 119 #define HDMI_CTRL_PKT_BUF_ACCESS_PB17           0x74 /* Control packet data buffer access window - PB17 */
 120 #define HDMI_CTRL_PKT_BUF_ACCESS_PB18           0x75 /* Control packet data buffer access window - PB18 */
 121 #define HDMI_CTRL_PKT_BUF_ACCESS_PB19           0x76 /* Control packet data buffer access window - PB19 */
 122 #define HDMI_CTRL_PKT_BUF_ACCESS_PB20           0x77 /* Control packet data buffer access window - PB20 */
 123 #define HDMI_CTRL_PKT_BUF_ACCESS_PB21           0x78 /* Control packet data buffer access window - PB21 */
 124 #define HDMI_CTRL_PKT_BUF_ACCESS_PB22           0x79 /* Control packet data buffer access window - PB22 */
 125 #define HDMI_CTRL_PKT_BUF_ACCESS_PB23           0x7A /* Control packet data buffer access window - PB23 */
 126 #define HDMI_CTRL_PKT_BUF_ACCESS_PB24           0x7B /* Control packet data buffer access window - PB24 */
 127 #define HDMI_CTRL_PKT_BUF_ACCESS_PB25           0x7C /* Control packet data buffer access window - PB25 */
 128 #define HDMI_CTRL_PKT_BUF_ACCESS_PB26           0x7D /* Control packet data buffer access window - PB26 */
 129 #define HDMI_CTRL_PKT_BUF_ACCESS_PB27           0x7E /* Control packet data buffer access window - PB27 */
 130 #define HDMI_EDID_KSV_FIFO_ACCESS_WINDOW        0x80 /* EDID/KSV FIFO access window */
 131 #define HDMI_DDC_BUS_ACCESS_FREQ_CTRL_7_0       0x81 /* DDC bus access frequency control (LSB) */
 132 #define HDMI_DDC_BUS_ACCESS_FREQ_CTRL_15_8      0x82 /* DDC bus access frequency control (MSB) */
 133 #define HDMI_INTERRUPT_MASK_1                   0x92 /* Interrupt mask.1 */
 134 #define HDMI_INTERRUPT_MASK_2                   0x93 /* Interrupt mask.2 */
 135 #define HDMI_INTERRUPT_STATUS_1                 0x94 /* Interrupt status.1 */
 136 #define HDMI_INTERRUPT_STATUS_2                 0x95 /* Interrupt status.2 */
 137 #define HDMI_INTERRUPT_MASK_3                   0x96 /* Interrupt mask.3 */
 138 #define HDMI_INTERRUPT_MASK_4                   0x97 /* Interrupt mask.4 */
 139 #define HDMI_INTERRUPT_STATUS_3                 0x98 /* Interrupt status.3 */
 140 #define HDMI_INTERRUPT_STATUS_4                 0x99 /* Interrupt status.4 */
 141 #define HDMI_SOFTWARE_HDCP_CONTROL_1            0x9A /* Software HDCP control.1 */
 142 #define HDMI_FRAME_COUNTER                      0x9C /* Frame counter */
 143 #define HDMI_FRAME_COUNTER_FOR_RI_CHECK         0x9D /* Frame counter for Ri check */
 144 #define HDMI_HDCP_CONTROL                       0xAF /* HDCP control */
 145 #define HDMI_RI_FRAME_COUNT_REGISTER            0xB2 /* Ri frame count register */
 146 #define HDMI_DDC_BUS_CONTROL                    0xB7 /* DDC bus control */
 147 #define HDMI_HDCP_STATUS                        0xB8 /* HDCP status */
 148 #define HDMI_SHA0                               0xB9 /* sha0 */
 149 #define HDMI_SHA1                               0xBA /* sha1 */
 150 #define HDMI_SHA2                               0xBB /* sha2 */
 151 #define HDMI_SHA3                               0xBC /* sha3 */
 152 #define HDMI_SHA4                               0xBD /* sha4 */
 153 #define HDMI_BCAPS_READ                         0xBE /* BCAPS read / debug */
 154 #define HDMI_AKSV_BKSV_7_0_MONITOR              0xBF /* AKSV/BKSV[7:0] monitor */
 155 #define HDMI_AKSV_BKSV_15_8_MONITOR             0xC0 /* AKSV/BKSV[15:8] monitor */
 156 #define HDMI_AKSV_BKSV_23_16_MONITOR            0xC1 /* AKSV/BKSV[23:16] monitor */
 157 #define HDMI_AKSV_BKSV_31_24_MONITOR            0xC2 /* AKSV/BKSV[31:24] monitor */
 158 #define HDMI_AKSV_BKSV_39_32_MONITOR            0xC3 /* AKSV/BKSV[39:32] monitor */
 159 #define HDMI_EDID_SEGMENT_POINTER               0xC4 /* EDID segment pointer */
 160 #define HDMI_EDID_WORD_ADDRESS                  0xC5 /* EDID word address */
 161 #define HDMI_EDID_DATA_FIFO_ADDRESS             0xC6 /* EDID data FIFO address */
 162 #define HDMI_NUM_OF_HDMI_DEVICES                0xC7 /* Number of HDMI devices */
 163 #define HDMI_HDCP_ERROR_CODE                    0xC8 /* HDCP error code */
 164 #define HDMI_100MS_TIMER_SET                    0xC9 /* 100ms timer setting */
 165 #define HDMI_5SEC_TIMER_SET                     0xCA /* 5sec timer setting */
 166 #define HDMI_RI_READ_COUNT                      0xCB /* Ri read count */
 167 #define HDMI_AN_SEED                            0xCC /* An seed */
 168 #define HDMI_MAX_NUM_OF_RCIVRS_ALLOWED          0xCD /* Maximum number of receivers allowed */
 169 #define HDMI_HDCP_MEMORY_ACCESS_CONTROL_1       0xCE /* HDCP memory access control.1 */
 170 #define HDMI_HDCP_MEMORY_ACCESS_CONTROL_2       0xCF /* HDCP memory access control.2 */
 171 #define HDMI_HDCP_CONTROL_2                     0xD0 /* HDCP Control 2 */
 172 #define HDMI_HDCP_KEY_MEMORY_CONTROL            0xD2 /* HDCP Key Memory Control */
 173 #define HDMI_COLOR_SPACE_CONV_CONFIG_1          0xD3 /* Color space conversion configuration.1 */
 174 #define HDMI_VIDEO_SETTING_3                    0xD4 /* Video setting.3 */
 175 #define HDMI_RI_7_0                             0xD5 /* Ri[7:0] */
 176 #define HDMI_RI_15_8                            0xD6 /* Ri[15:8] */
 177 #define HDMI_PJ                                 0xD7 /* Pj */
 178 #define HDMI_SHA_RD                             0xD8 /* sha_rd */
 179 #define HDMI_RI_7_0_SAVED                       0xD9 /* Ri[7:0] saved */
 180 #define HDMI_RI_15_8_SAVED                      0xDA /* Ri[15:8] saved */
 181 #define HDMI_PJ_SAVED                           0xDB /* Pj saved */
 182 #define HDMI_NUM_OF_DEVICES                     0xDC /* Number of devices */
 183 #define HDMI_HOT_PLUG_MSENS_STATUS              0xDF /* Hot plug/MSENS status */
 184 #define HDMI_BCAPS_WRITE                        0xE0 /* bcaps */
 185 #define HDMI_BSTAT_7_0                          0xE1 /* bstat[7:0] */
 186 #define HDMI_BSTAT_15_8                         0xE2 /* bstat[15:8] */
 187 #define HDMI_BKSV_7_0                           0xE3 /* bksv[7:0] */
 188 #define HDMI_BKSV_15_8                          0xE4 /* bksv[15:8] */
 189 #define HDMI_BKSV_23_16                         0xE5 /* bksv[23:16] */
 190 #define HDMI_BKSV_31_24                         0xE6 /* bksv[31:24] */
 191 #define HDMI_BKSV_39_32                         0xE7 /* bksv[39:32] */
 192 #define HDMI_AN_7_0                             0xE8 /* An[7:0] */
 193 #define HDMI_AN_15_8                            0xE9 /* An [15:8] */
 194 #define HDMI_AN_23_16                           0xEA /* An [23:16] */
 195 #define HDMI_AN_31_24                           0xEB /* An [31:24] */
 196 #define HDMI_AN_39_32                           0xEC /* An [39:32] */
 197 #define HDMI_AN_47_40                           0xED /* An [47:40] */
 198 #define HDMI_AN_55_48                           0xEE /* An [55:48] */
 199 #define HDMI_AN_63_56                           0xEF /* An [63:56] */
 200 #define HDMI_PRODUCT_ID                         0xF0 /* Product ID */
 201 #define HDMI_REVISION_ID                        0xF1 /* Revision ID */
 202 #define HDMI_TEST_MODE                          0xFE /* Test mode */
 203
 204 enum hotplug_state {
 205         HDMI_HOTPLUG_DISCONNECTED,
 206         HDMI_HOTPLUG_CONNECTED,
 207         HDMI_HOTPLUG_EDID_DONE,
 208 };
 209
 210 struct sh_hdmi {
 211         struct sh_mobile_lcdc_entity entity;
 212
 213         void __iomem *base;
 214         enum hotplug_state hp_state;    /* hot-plug status */
 215         u8 preprogrammed_vic;           /* use a pre-programmed VIC or
 216                                            the external mode */
 217         u8 edid_block_addr;
 218         u8 edid_segment_nr;
 219         u8 edid_blocks;
 220         struct clk *hdmi_clk;
 221         struct device *dev;
 222         struct delayed_work edid_work;
 223         struct fb_videomode mode;
 224         struct fb_monspecs monspec;
 225 };
 226
 227 #define entity_to_sh_hdmi(e)    container_of(e, struct sh_hdmi, entity)
 228
 229 static void hdmi_write(struct sh_hdmi *hdmi, u8 data, u8 reg)
 230 {
 231         iowrite8(data, hdmi->base + reg);
 232 }
 233
 234 static u8 hdmi_read(struct sh_hdmi *hdmi, u8 reg)
 235 {
 236         return ioread8(hdmi->base + reg);
 237 }
 238
 239 /*
 240  *      HDMI sound
 241  */
 242 static unsigned int sh_hdmi_snd_read(struct snd_soc_codec *codec,
 243                                      unsigned int reg)
 244 {
 245         struct sh_hdmi *hdmi = snd_soc_codec_get_drvdata(codec);
 246
 247         return hdmi_read(hdmi, reg);
 248 }
 249
 250 static int sh_hdmi_snd_write(struct snd_soc_codec *codec,
 251                              unsigned int reg,
 252                              unsigned int value)
 253 {
 254         struct sh_hdmi *hdmi = snd_soc_codec_get_drvdata(codec);
 255
 256         hdmi_write(hdmi, value, reg);
 257         return 0;
 258 }
 259
 260 static struct snd_soc_dai_driver sh_hdmi_dai = {
 261         .name = "sh_mobile_hdmi-hifi",
 262         .playback = {
 263                 .stream_name = "Playback",
 264                 .channels_min = 2,
 265                 .channels_max = 8,
 266                 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100  |
 267                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200  |
 268                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |
 269                          SNDRV_PCM_RATE_192000,
 270                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 271         },
 272 };
 273
 274 static int sh_hdmi_snd_probe(struct snd_soc_codec *codec)
 275 {
 276         dev_info(codec->dev, "SH Mobile HDMI Audio Codec");
 277
 278         return 0;
 279 }
 280
 281 static struct snd_soc_codec_driver soc_codec_dev_sh_hdmi = {
 282         .probe          = sh_hdmi_snd_probe,
 283         .read           = sh_hdmi_snd_read,
 284         .write          = sh_hdmi_snd_write,
 285 };
 286
 287 /*
 288  *      HDMI video
 289  */
 290
 291 /* External video parameter settings */
 292 static void sh_hdmi_external_video_param(struct sh_hdmi *hdmi)
 293 {
 294         struct fb_videomode *mode = &hdmi->mode;
 295         u16 htotal, hblank, hdelay, vtotal, vblank, vdelay, voffset;
 296         u8 sync = 0;
 297
 298         htotal = mode->xres + mode->right_margin + mode->left_margin
 299                + mode->hsync_len;
 300         hdelay = mode->hsync_len + mode->left_margin;
 301         hblank = mode->right_margin + hdelay;
 302
 303         /*
 304          * Vertical timing looks a bit different in Figure 18,
 305          * but let's try the same first by setting offset = 0
 306          */
 307         vtotal = mode->yres + mode->upper_margin + mode->lower_margin
 308                + mode->vsync_len;
 309         vdelay = mode->vsync_len + mode->upper_margin;
 310         vblank = mode->lower_margin + vdelay;
 311         voffset = min(mode->upper_margin / 2, 6U);
 312
 313         /*
 314          * [3]: VSYNC polarity: Positive
 315          * [2]: HSYNC polarity: Positive
 316          * [1]: Interlace/Progressive: Progressive
 317          * [0]: External video settings enable: used.
 318          */
 319         if (mode->sync & FB_SYNC_HOR_HIGH_ACT)
 320                 sync |= 4;
 321         if (mode->sync & FB_SYNC_VERT_HIGH_ACT)
 322                 sync |= 8;
 323
 324         dev_dbg(hdmi->dev, "H: %u, %u, %u, %u; V: %u, %u, %u, %u; sync 0x%x\n",
 325                 htotal, hblank, hdelay, mode->hsync_len,
 326                 vtotal, vblank, vdelay, mode->vsync_len, sync);
 327
 328         hdmi_write(hdmi, sync | (voffset << 4), HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS);
 329
 330         hdmi_write(hdmi, htotal, HDMI_EXTERNAL_H_TOTAL_7_0);
 331         hdmi_write(hdmi, htotal >> 8, HDMI_EXTERNAL_H_TOTAL_11_8);
 332
 333         hdmi_write(hdmi, hblank, HDMI_EXTERNAL_H_BLANK_7_0);
 334         hdmi_write(hdmi, hblank >> 8, HDMI_EXTERNAL_H_BLANK_9_8);
 335
 336         hdmi_write(hdmi, hdelay, HDMI_EXTERNAL_H_DELAY_7_0);
 337         hdmi_write(hdmi, hdelay >> 8, HDMI_EXTERNAL_H_DELAY_9_8);
 338
 339         hdmi_write(hdmi, mode->hsync_len, HDMI_EXTERNAL_H_DURATION_7_0);
 340         hdmi_write(hdmi, mode->hsync_len >> 8, HDMI_EXTERNAL_H_DURATION_9_8);
 341
 342         hdmi_write(hdmi, vtotal, HDMI_EXTERNAL_V_TOTAL_7_0);
 343         hdmi_write(hdmi, vtotal >> 8, HDMI_EXTERNAL_V_TOTAL_9_8);
 344
 345         hdmi_write(hdmi, vblank, HDMI_EXTERNAL_V_BLANK);
 346
 347         hdmi_write(hdmi, vdelay, HDMI_EXTERNAL_V_DELAY);
 348
 349         hdmi_write(hdmi, mode->vsync_len, HDMI_EXTERNAL_V_DURATION);
 350
 351         /* Set bit 0 of HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS here for external mode */
 352         if (!hdmi->preprogrammed_vic)
 353                 hdmi_write(hdmi, sync | 1 | (voffset << 4),
 354                            HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS);
 355 }
 356
 357 /**
 358  * sh_hdmi_video_config()
 359  */
 360 static void sh_hdmi_video_config(struct sh_hdmi *hdmi)
 361 {
 362         /*
 363          * [7:4]: Audio sampling frequency: 48kHz
 364          * [3:1]: Input video format: RGB and YCbCr 4:4:4 (Y on Green)
 365          * [0]: Internal/External DE select: internal
 366          */
 367         hdmi_write(hdmi, 0x20, HDMI_AUDIO_VIDEO_SETTING_1);
 368
 369         /*
 370          * [7:6]: Video output format: RGB 4:4:4
 371          * [5:4]: Input video data width: 8 bit
 372          * [3:1]: EAV/SAV location: channel 1
 373          * [0]: Video input color space: RGB
 374          */
 375         hdmi_write(hdmi, 0x34, HDMI_VIDEO_SETTING_1);
 376
 377         /*
 378          * [7:6]: Together with bit [6] of HDMI_AUDIO_VIDEO_SETTING_2, which is
 379          * left at 0 by default, this configures 24bpp and sets the Color Depth
 380          * (CD) field in the General Control Packet
 381          */
 382         hdmi_write(hdmi, 0x20, HDMI_DEEP_COLOR_MODES);
 383 }
 384
 385 /**
 386  * sh_hdmi_audio_config()
 387  */
 388 static void sh_hdmi_audio_config(struct sh_hdmi *hdmi)
 389 {
 390         u8 data;
 391         struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
 392
 393         /*
 394          * [7:4] L/R data swap control
 395          * [3:0] appropriate N[19:16]
 396          */
 397         hdmi_write(hdmi, 0x00, HDMI_L_R_DATA_SWAP_CTRL_RPKT);
 398         /* appropriate N[15:8] */
 399         hdmi_write(hdmi, 0x18, HDMI_20_BIT_N_FOR_AUDIO_RPKT_15_8);
 400         /* appropriate N[7:0] */
 401         hdmi_write(hdmi, 0x00, HDMI_20_BIT_N_FOR_AUDIO_RPKT_7_0);
 402
 403         /* [7:4] 48 kHz SPDIF not used */
 404         hdmi_write(hdmi, 0x20, HDMI_SPDIF_AUDIO_SAMP_FREQ_CTS);
 405
 406         /*
 407          * [6:5] set required down sampling rate if required
 408          * [4:3] set required audio source
 409          */
 410         switch (pdata->flags & HDMI_SND_SRC_MASK) {
 411         default:
 412                 /* fall through */
 413         case HDMI_SND_SRC_I2S:
 414                 data = 0x0 << 3;
 415                 break;
 416         case HDMI_SND_SRC_SPDIF:
 417                 data = 0x1 << 3;
 418                 break;
 419         case HDMI_SND_SRC_DSD:
 420                 data = 0x2 << 3;
 421                 break;
 422         case HDMI_SND_SRC_HBR:
 423                 data = 0x3 << 3;
 424                 break;
 425         }
 426         hdmi_write(hdmi, data, HDMI_AUDIO_SETTING_1);
 427
 428         /* [3:0] set sending channel number for channel status */
 429         hdmi_write(hdmi, 0x40, HDMI_AUDIO_SETTING_2);
 430
 431         /*
 432          * [5:2] set valid I2S source input pin
 433          * [1:0] set input I2S source mode
 434          */
 435         hdmi_write(hdmi, 0x04, HDMI_I2S_AUDIO_SET);
 436
 437         /* [7:4] set valid DSD source input pin */
 438         hdmi_write(hdmi, 0x00, HDMI_DSD_AUDIO_SET);
 439
 440         /* [7:0] set appropriate I2S input pin swap settings if required */
 441         hdmi_write(hdmi, 0x00, HDMI_I2S_INPUT_PIN_SWAP);
 442
 443         /*
 444          * [7] set validity bit for channel status
 445          * [3:0] set original sample frequency for channel status
 446          */
 447         hdmi_write(hdmi, 0x00, HDMI_AUDIO_STATUS_BITS_SETTING_1);
 448
 449         /*
 450          * [7] set value for channel status
 451          * [6] set value for channel status
 452          * [5] set copyright bit for channel status
 453          * [4:2] set additional information for channel status
 454          * [1:0] set clock accuracy for channel status
 455          */
 456         hdmi_write(hdmi, 0x00, HDMI_AUDIO_STATUS_BITS_SETTING_2);
 457
 458         /* [7:0] set category code for channel status */
 459         hdmi_write(hdmi, 0x00, HDMI_CATEGORY_CODE);
 460
 461         /*
 462          * [7:4] set source number for channel status
 463          * [3:0] set word length for channel status
 464          */
 465         hdmi_write(hdmi, 0x00, HDMI_SOURCE_NUM_AUDIO_WORD_LEN);
 466
 467         /* [7:4] set sample frequency for channel status */
 468         hdmi_write(hdmi, 0x20, HDMI_AUDIO_VIDEO_SETTING_1);
 469 }
 470
 471 /**
 472  * sh_hdmi_phy_config() - configure the HDMI PHY for the used video mode
 473  */
 474 static void sh_hdmi_phy_config(struct sh_hdmi *hdmi)
 475 {
 476         if (hdmi->mode.pixclock < 10000) {
 477                 /* for 1080p8bit 148MHz */
 478                 hdmi_write(hdmi, 0x1d, HDMI_SLIPHDMIT_PARAM_SETTINGS_1);
 479                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_2);
 480                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_3);
 481                 hdmi_write(hdmi, 0x4c, HDMI_SLIPHDMIT_PARAM_SETTINGS_5);
 482                 hdmi_write(hdmi, 0x1e, HDMI_SLIPHDMIT_PARAM_SETTINGS_6);
 483                 hdmi_write(hdmi, 0x48, HDMI_SLIPHDMIT_PARAM_SETTINGS_7);
 484                 hdmi_write(hdmi, 0x0e, HDMI_SLIPHDMIT_PARAM_SETTINGS_8);
 485                 hdmi_write(hdmi, 0x25, HDMI_SLIPHDMIT_PARAM_SETTINGS_9);
 486                 hdmi_write(hdmi, 0x04, HDMI_SLIPHDMIT_PARAM_SETTINGS_10);
 487         } else if (hdmi->mode.pixclock < 30000) {
 488                 /* 720p, 8bit, 74.25MHz. Might need to be adjusted for other formats */
 489                 /*
 490                  * [1:0]        Speed_A
 491                  * [3:2]        Speed_B
 492                  * [4]          PLLA_Bypass
 493                  * [6]          DRV_TEST_EN
 494                  * [7]          DRV_TEST_IN
 495                  */
 496                 hdmi_write(hdmi, 0x0f, HDMI_SLIPHDMIT_PARAM_SETTINGS_1);
 497                 /* PLLB_CONFIG[17], PLLA_CONFIG[17] - not in PHY datasheet */
 498                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_2);
 499                 /*
 500                  * [2:0]        BGR_I_OFFSET
 501                  * [6:4]        BGR_V_OFFSET
 502                  */
 503                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_3);
 504                 /* PLLA_CONFIG[7:0]: VCO gain, VCO offset, LPF resistance[0] */
 505                 hdmi_write(hdmi, 0x44, HDMI_SLIPHDMIT_PARAM_SETTINGS_5);
 506                 /*
 507                  * PLLA_CONFIG[15:8]: regulator voltage[0], CP current,
 508                  * LPF capacitance, LPF resistance[1]
 509                  */
 510                 hdmi_write(hdmi, 0x32, HDMI_SLIPHDMIT_PARAM_SETTINGS_6);
 511                 /* PLLB_CONFIG[7:0]: LPF resistance[0], VCO offset, VCO gain */
 512                 hdmi_write(hdmi, 0x4A, HDMI_SLIPHDMIT_PARAM_SETTINGS_7);
 513                 /*
 514                  * PLLB_CONFIG[15:8]: regulator voltage[0], CP current,
 515                  * LPF capacitance, LPF resistance[1]
 516                  */
 517                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_8);
 518                 /* DRV_CONFIG, PE_CONFIG */
 519                 hdmi_write(hdmi, 0x25, HDMI_SLIPHDMIT_PARAM_SETTINGS_9);
 520                 /*
 521                  * [2:0]        AMON_SEL (4 == LPF voltage)
 522                  * [4]          PLLA_CONFIG[16]
 523                  * [5]          PLLB_CONFIG[16]
 524                  */
 525                 hdmi_write(hdmi, 0x04, HDMI_SLIPHDMIT_PARAM_SETTINGS_10);
 526         } else {
 527                 /* for 480p8bit 27MHz */
 528                 hdmi_write(hdmi, 0x19, HDMI_SLIPHDMIT_PARAM_SETTINGS_1);
 529                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_2);
 530                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_3);
 531                 hdmi_write(hdmi, 0x44, HDMI_SLIPHDMIT_PARAM_SETTINGS_5);
 532                 hdmi_write(hdmi, 0x32, HDMI_SLIPHDMIT_PARAM_SETTINGS_6);
 533                 hdmi_write(hdmi, 0x48, HDMI_SLIPHDMIT_PARAM_SETTINGS_7);
 534                 hdmi_write(hdmi, 0x0F, HDMI_SLIPHDMIT_PARAM_SETTINGS_8);
 535                 hdmi_write(hdmi, 0x20, HDMI_SLIPHDMIT_PARAM_SETTINGS_9);
 536                 hdmi_write(hdmi, 0x04, HDMI_SLIPHDMIT_PARAM_SETTINGS_10);
 537         }
 538 }
 539
 540 /**
 541  * sh_hdmi_avi_infoframe_setup() - Auxiliary Video Information InfoFrame CONTROL PACKET
 542  */
 543 static void sh_hdmi_avi_infoframe_setup(struct sh_hdmi *hdmi)
 544 {
 545         u8 vic;
 546
 547         /* AVI InfoFrame */
 548         hdmi_write(hdmi, 0x06, HDMI_CTRL_PKT_BUF_INDEX);
 549
 550         /* Packet Type = 0x82 */
 551         hdmi_write(hdmi, 0x82, HDMI_CTRL_PKT_BUF_ACCESS_HB0);
 552
 553         /* Version = 0x02 */
 554         hdmi_write(hdmi, 0x02, HDMI_CTRL_PKT_BUF_ACCESS_HB1);
 555
 556         /* Length = 13 (0x0D) */
 557         hdmi_write(hdmi, 0x0D, HDMI_CTRL_PKT_BUF_ACCESS_HB2);
 558
 559         /* N. A. Checksum */
 560         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB0);
 561
 562         /*
 563          * Y = RGB
 564          * A0 = No Data
 565          * B = Bar Data not valid
 566          * S = No Data
 567          */
 568         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB1);
 569
 570         /*
 571          * [7:6] C = Colorimetry: no data
 572          * [5:4] M = 2: 16:9, 1: 4:3 Picture Aspect Ratio
 573          * [3:0] R = 8: Active Frame Aspect Ratio: same as picture aspect ratio
 574          */
 575         hdmi_write(hdmi, 0x28, HDMI_CTRL_PKT_BUF_ACCESS_PB2);
 576
 577         /*
 578          * ITC = No Data
 579          * EC = xvYCC601
 580          * Q = Default (depends on video format)
 581          * SC = No Known non_uniform Scaling
 582          */
 583         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB3);
 584
 585         /*
 586          * VIC should be ignored if external config is used, so, we could just use 0,
 587          * but play safe and use a valid value in any case just in case
 588          */
 589         if (hdmi->preprogrammed_vic)
 590                 vic = hdmi->preprogrammed_vic;
 591         else
 592                 vic = 4;
 593         hdmi_write(hdmi, vic, HDMI_CTRL_PKT_BUF_ACCESS_PB4);
 594
 595         /* PR = No Repetition */
 596         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB5);
 597
 598         /* Line Number of End of Top Bar (lower 8 bits) */
 599         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB6);
 600
 601         /* Line Number of End of Top Bar (upper 8 bits) */
 602         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB7);
 603
 604         /* Line Number of Start of Bottom Bar (lower 8 bits) */
 605         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB8);
 606
 607         /* Line Number of Start of Bottom Bar (upper 8 bits) */
 608         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB9);
 609
 610         /* Pixel Number of End of Left Bar (lower 8 bits) */
 611         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB10);
 612
 613         /* Pixel Number of End of Left Bar (upper 8 bits) */
 614         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB11);
 615
 616         /* Pixel Number of Start of Right Bar (lower 8 bits) */
 617         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB12);
 618
 619         /* Pixel Number of Start of Right Bar (upper 8 bits) */
 620         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB13);
 621 }
 622
 623 /**
 624  * sh_hdmi_audio_infoframe_setup() - Audio InfoFrame of CONTROL PACKET
 625  */
 626 static void sh_hdmi_audio_infoframe_setup(struct sh_hdmi *hdmi)
 627 {
 628         /* Audio InfoFrame */
 629         hdmi_write(hdmi, 0x08, HDMI_CTRL_PKT_BUF_INDEX);
 630
 631         /* Packet Type = 0x84 */
 632         hdmi_write(hdmi, 0x84, HDMI_CTRL_PKT_BUF_ACCESS_HB0);
 633
 634         /* Version Number = 0x01 */
 635         hdmi_write(hdmi, 0x01, HDMI_CTRL_PKT_BUF_ACCESS_HB1);
 636
 637         /* 0 Length = 10 (0x0A) */
 638         hdmi_write(hdmi, 0x0A, HDMI_CTRL_PKT_BUF_ACCESS_HB2);
 639
 640         /* n. a. Checksum */
 641         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB0);
 642
 643         /* Audio Channel Count = Refer to Stream Header */
 644         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB1);
 645
 646         /* Refer to Stream Header */
 647         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB2);
 648
 649         /* Format depends on coding type (i.e. CT0...CT3) */
 650         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB3);
 651
 652         /* Speaker Channel Allocation = Front Right + Front Left */
 653         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB4);
 654
 655         /* Level Shift Value = 0 dB, Down - mix is permitted or no information */
 656         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB5);
 657
 658         /* Reserved (0) */
 659         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB6);
 660         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB7);
 661         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB8);
 662         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB9);
 663         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB10);
 664 }
 665
 666 /**
 667  * sh_hdmi_configure() - Initialise HDMI for output
 668  */
 669 static void sh_hdmi_configure(struct sh_hdmi *hdmi)
 670 {
 671         /* Configure video format */
 672         sh_hdmi_video_config(hdmi);
 673
 674         /* Configure audio format */
 675         sh_hdmi_audio_config(hdmi);
 676
 677         /* Configure PHY */
 678         sh_hdmi_phy_config(hdmi);
 679
 680         /* Auxiliary Video Information (AVI) InfoFrame */
 681         sh_hdmi_avi_infoframe_setup(hdmi);
 682
 683         /* Audio InfoFrame */
 684         sh_hdmi_audio_infoframe_setup(hdmi);
 685
 686         /*
 687          * Control packet auto send with VSYNC control: auto send
 688          * General control, Gamut metadata, ISRC, and ACP packets
 689          */
 690         hdmi_write(hdmi, 0x8E, HDMI_CTRL_PKT_AUTO_SEND);
 691
 692         /* FIXME */
 693         msleep(10);
 694
 695         /* PS mode b->d, reset PLLA and PLLB */
 696         hdmi_write(hdmi, 0x4C, HDMI_SYSTEM_CTRL);
 697
 698         udelay(10);
 699
 700         hdmi_write(hdmi, 0x40, HDMI_SYSTEM_CTRL);
 701 }
 702
 703 static unsigned long sh_hdmi_rate_error(struct sh_hdmi *hdmi,
 704                 const struct fb_videomode *mode,
 705                 unsigned long *hdmi_rate, unsigned long *parent_rate)
 706 {
 707         unsigned long target = PICOS2KHZ(mode->pixclock) * 1000, rate_error;
 708         struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
 709
 710         *hdmi_rate = clk_round_rate(hdmi->hdmi_clk, target);
 711         if ((long)*hdmi_rate < 0)
 712                 *hdmi_rate = clk_get_rate(hdmi->hdmi_clk);
 713
 714         rate_error = (long)*hdmi_rate > 0 ? abs(*hdmi_rate - target) : ULONG_MAX;
 715         if (rate_error && pdata->clk_optimize_parent)
 716                 rate_error = pdata->clk_optimize_parent(target, hdmi_rate, parent_rate);
 717         else if (clk_get_parent(hdmi->hdmi_clk))
 718                 *parent_rate = clk_get_rate(clk_get_parent(hdmi->hdmi_clk));
 719
 720         dev_dbg(hdmi->dev, "%u-%u-%u-%u x %u-%u-%u-%u\n",
 721                 mode->left_margin, mode->xres,
 722                 mode->right_margin, mode->hsync_len,
 723                 mode->upper_margin, mode->yres,
 724                 mode->lower_margin, mode->vsync_len);
 725
 726         dev_dbg(hdmi->dev, "\t@%lu(+/-%lu)Hz, e=%lu / 1000, r=%uHz, p=%luHz\n", target,
 727                 rate_error, rate_error ? 10000 / (10 * target / rate_error) : 0,
 728                 mode->refresh, *parent_rate);
 729
 730         return rate_error;
 731 }
 732
 733 static int sh_hdmi_read_edid(struct sh_hdmi *hdmi, unsigned long *hdmi_rate,
 734                              unsigned long *parent_rate)
 735 {
 736         struct sh_mobile_lcdc_chan *ch = hdmi->entity.lcdc;
 737         struct fb_info *info = ch ? ch->info : NULL;
 738         const struct fb_videomode *mode, *found = NULL;
 739         const struct fb_modelist *modelist = NULL;
 740         unsigned int f_width = 0, f_height = 0, f_refresh = 0;
 741         unsigned long found_rate_error = ULONG_MAX; /* silly compiler... */
 742         bool scanning = false, preferred_bad = false;
 743         u8 edid[128];
 744         char *forced;
 745         int i;
 746
 747         /* Read EDID */
 748         dev_dbg(hdmi->dev, "Read back EDID code:");
 749         for (i = 0; i < 128; i++) {
 750                 edid[i] = hdmi_read(hdmi, HDMI_EDID_KSV_FIFO_ACCESS_WINDOW);
 751 #ifdef DEBUG
 752                 if ((i % 16) == 0) {
 753                         printk(KERN_CONT "\n");
 754                         printk(KERN_DEBUG "%02X | %02X", i, edid[i]);
 755                 } else {
 756                         printk(KERN_CONT " %02X", edid[i]);
 757                 }
 758 #endif
 759         }
 760 #ifdef DEBUG
 761         printk(KERN_CONT "\n");
 762 #endif
 763
 764         if (!hdmi->edid_blocks) {
 765                 fb_edid_to_monspecs(edid, &hdmi->monspec);
 766                 hdmi->edid_blocks = edid[126] + 1;
 767
 768                 dev_dbg(hdmi->dev, "%d main modes, %d extension blocks\n",
 769                         hdmi->monspec.modedb_len, hdmi->edid_blocks - 1);
 770         } else {
 771                 dev_dbg(hdmi->dev, "Extension %u detected, DTD start %u\n",
 772                         edid[0], edid[2]);
 773                 fb_edid_add_monspecs(edid, &hdmi->monspec);
 774         }
 775
 776         if (hdmi->edid_blocks > hdmi->edid_segment_nr * 2 +
 777             (hdmi->edid_block_addr >> 7) + 1) {
 778                 /* More blocks to read */
 779                 if (hdmi->edid_block_addr) {
 780                         hdmi->edid_block_addr = 0;
 781                         hdmi->edid_segment_nr++;
 782                 } else {
 783                         hdmi->edid_block_addr = 0x80;
 784                 }
 785                 /* Set EDID word address  */
 786                 hdmi_write(hdmi, hdmi->edid_block_addr, HDMI_EDID_WORD_ADDRESS);
 787                 /* Enable EDID interrupt */
 788                 hdmi_write(hdmi, 0xC6, HDMI_INTERRUPT_MASK_1);
 789                 /* Set EDID segment pointer - starts reading EDID */
 790                 hdmi_write(hdmi, hdmi->edid_segment_nr, HDMI_EDID_SEGMENT_POINTER);
 791                 return -EAGAIN;
 792         }
 793
 794         /* All E-EDID blocks ready */
 795         dev_dbg(hdmi->dev, "%d main and extended modes\n", hdmi->monspec.modedb_len);
 796
 797         fb_get_options("sh_mobile_lcdc", &forced);
 798         if (forced && *forced) {
 799                 /* Only primitive parsing so far */
 800                 i = sscanf(forced, "%ux%u@%u",
 801                            &f_width, &f_height, &f_refresh);
 802                 if (i < 2) {
 803                         f_width = 0;
 804                         f_height = 0;
 805                 } else {
 806                         /* The user wants us to use the EDID data */
 807                         scanning = true;
 808                 }
 809                 dev_dbg(hdmi->dev, "Forced mode %ux%u@%uHz\n",
 810                         f_width, f_height, f_refresh);
 811         }
 812
 813         /* Walk monitor modes to find the best or the exact match */
 814         for (i = 0, mode = hdmi->monspec.modedb;
 815              i < hdmi->monspec.modedb_len && scanning;
 816              i++, mode++) {
 817                 unsigned long rate_error;
 818
 819                 if (!f_width && !f_height) {
 820                         /*
 821                          * A parameter string "video=sh_mobile_lcdc:0x0" means
 822                          * use the preferred EDID mode. If it is rejected by
 823                          * .fb_check_var(), keep looking, until an acceptable
 824                          * one is found.
 825                          */
 826                         if ((mode->flag & FB_MODE_IS_FIRST) || preferred_bad)
 827                                 scanning = false;
 828                         else
 829                                 continue;
 830                 } else if (f_width != mode->xres || f_height != mode->yres) {
 831                         /* No interest in unmatching modes */
 832                         continue;
 833                 }
 834
 835                 rate_error = sh_hdmi_rate_error(hdmi, mode, hdmi_rate, parent_rate);
 836
 837                 if (scanning) {
 838                         if (f_refresh == mode->refresh || (!f_refresh && !rate_error))
 839                                 /*
 840                                  * Exact match if either the refresh rate
 841                                  * matches or it hasn't been specified and we've
 842                                  * found a mode, for which we can configure the
 843                                  * clock precisely
 844                                  */
 845                                 scanning = false;
 846                         else if (found && found_rate_error <= rate_error)
 847                                 /*
 848                                  * We otherwise search for the closest matching
 849                                  * clock rate - either if no refresh rate has
 850                                  * been specified or we cannot find an exactly
 851                                  * matching one
 852                                  */
 853                                 continue;
 854                 }
 855
 856                 /* Check if supported: sufficient fb memory, supported clock-rate */
 857                 if (ch && ch->notify &&
 858                     ch->notify(ch, SH_MOBILE_LCDC_EVENT_DISPLAY_MODE, mode,
 859                                NULL)) {
 860                         scanning = true;
 861                         preferred_bad = true;
 862                         continue;
 863                 }
 864
 865                 found = mode;
 866                 found_rate_error = rate_error;
 867         }
 868
 869         /*
 870          * TODO 1: if no ->info is present, postpone running the config until
 871          * after ->info first gets registered.
 872          * TODO 2: consider registering the HDMI platform device from the LCDC
 873          * driver, and passing ->info with HDMI platform data.
 874          */
 875         if (info && !found) {
 876                 modelist = info->modelist.next &&
 877                         !list_empty(&info->modelist) ?
 878                         list_entry(info->modelist.next,
 879                                    struct fb_modelist, list) :
 880                         NULL;
 881
 882                 if (modelist) {
 883                         found = &modelist->mode;
 884                         found_rate_error = sh_hdmi_rate_error(hdmi, found, hdmi_rate, parent_rate);
 885                 }
 886         }
 887
 888         /* No cookie today */
 889         if (!found)
 890                 return -ENXIO;
 891
 892         if (found->xres == 640 && found->yres == 480 && found->refresh == 60)
 893                 hdmi->preprogrammed_vic = 1;
 894         else if (found->xres == 720 && found->yres == 480 && found->refresh == 60)
 895                 hdmi->preprogrammed_vic = 2;
 896         else if (found->xres == 720 && found->yres == 576 && found->refresh == 50)
 897                 hdmi->preprogrammed_vic = 17;
 898         else if (found->xres == 1280 && found->yres == 720 && found->refresh == 60)
 899                 hdmi->preprogrammed_vic = 4;
 900         else if (found->xres == 1920 && found->yres == 1080 && found->refresh == 24)
 901                 hdmi->preprogrammed_vic = 32;
 902         else if (found->xres == 1920 && found->yres == 1080 && found->refresh == 50)
 903                 hdmi->preprogrammed_vic = 31;
 904         else if (found->xres == 1920 && found->yres == 1080 && found->refresh == 60)
 905                 hdmi->preprogrammed_vic = 16;
 906         else
 907                 hdmi->preprogrammed_vic = 0;
 908
 909         dev_dbg(hdmi->dev, "Using %s %s mode %ux%u@%uHz (%luHz), clock error %luHz\n",
 910                 modelist ? "default" : "EDID", hdmi->preprogrammed_vic ? "VIC" : "external",
 911                 found->xres, found->yres, found->refresh,
 912                 PICOS2KHZ(found->pixclock) * 1000, found_rate_error);
 913
 914         hdmi->mode = *found;
 915         sh_hdmi_external_video_param(hdmi);
 916
 917         return 0;
 918 }
 919
 920 static irqreturn_t sh_hdmi_hotplug(int irq, void *dev_id)
 921 {
 922         struct sh_hdmi *hdmi = dev_id;
 923         u8 status1, status2, mask1, mask2;
 924
 925         /* mode_b and PLLA and PLLB reset */
 926         hdmi_write(hdmi, 0x2C, HDMI_SYSTEM_CTRL);
 927
 928         /* How long shall reset be held? */
 929         udelay(10);
 930
 931         /* mode_b and PLLA and PLLB reset release */
 932         hdmi_write(hdmi, 0x20, HDMI_SYSTEM_CTRL);
 933
 934         status1 = hdmi_read(hdmi, HDMI_INTERRUPT_STATUS_1);
 935         status2 = hdmi_read(hdmi, HDMI_INTERRUPT_STATUS_2);
 936
 937         mask1 = hdmi_read(hdmi, HDMI_INTERRUPT_MASK_1);
 938         mask2 = hdmi_read(hdmi, HDMI_INTERRUPT_MASK_2);
 939
 940         /* Correct would be to ack only set bits, but the datasheet requires 0xff */
 941         hdmi_write(hdmi, 0xFF, HDMI_INTERRUPT_STATUS_1);
 942         hdmi_write(hdmi, 0xFF, HDMI_INTERRUPT_STATUS_2);
 943
 944         if (printk_ratelimit())
 945                 dev_dbg(hdmi->dev, "IRQ #%d: Status #1: 0x%x & 0x%x, #2: 0x%x & 0x%x\n",
 946                         irq, status1, mask1, status2, mask2);
 947
 948         if (!((status1 & mask1) | (status2 & mask2))) {
 949                 return IRQ_NONE;
 950         } else if (status1 & 0xc0) {
 951                 u8 msens;
 952
 953                 /* Datasheet specifies 10ms... */
 954                 udelay(500);
 955
 956                 msens = hdmi_read(hdmi, HDMI_HOT_PLUG_MSENS_STATUS);
 957                 dev_dbg(hdmi->dev, "MSENS 0x%x\n", msens);
 958                 /* Check, if hot plug & MSENS pin status are both high */
 959                 if ((msens & 0xC0) == 0xC0) {
 960                         /* Display plug in */
 961                         hdmi->edid_segment_nr = 0;
 962                         hdmi->edid_block_addr = 0;
 963                         hdmi->edid_blocks = 0;
 964                         hdmi->hp_state = HDMI_HOTPLUG_CONNECTED;
 965
 966                         /* Set EDID word address  */
 967                         hdmi_write(hdmi, 0x00, HDMI_EDID_WORD_ADDRESS);
 968                         /* Enable EDID interrupt */
 969                         hdmi_write(hdmi, 0xC6, HDMI_INTERRUPT_MASK_1);
 970                         /* Set EDID segment pointer - starts reading EDID */
 971                         hdmi_write(hdmi, 0x00, HDMI_EDID_SEGMENT_POINTER);
 972                 } else if (!(status1 & 0x80)) {
 973                         /* Display unplug, beware multiple interrupts */
 974                         if (hdmi->hp_state != HDMI_HOTPLUG_DISCONNECTED) {
 975                                 hdmi->hp_state = HDMI_HOTPLUG_DISCONNECTED;
 976                                 schedule_delayed_work(&hdmi->edid_work, 0);
 977                         }
 978                         /* display_off will switch back to mode_a */
 979                 }
 980         } else if (status1 & 2) {
 981                 /* EDID error interrupt: retry */
 982                 /* Set EDID word address  */
 983                 hdmi_write(hdmi, hdmi->edid_block_addr, HDMI_EDID_WORD_ADDRESS);
 984                 /* Set EDID segment pointer */
 985                 hdmi_write(hdmi, hdmi->edid_segment_nr, HDMI_EDID_SEGMENT_POINTER);
 986         } else if (status1 & 4) {
 987                 /* Disable EDID interrupt */
 988                 hdmi_write(hdmi, 0xC0, HDMI_INTERRUPT_MASK_1);
 989                 schedule_delayed_work(&hdmi->edid_work, msecs_to_jiffies(10));
 990         }
 991
 992         return IRQ_HANDLED;
 993 }
 994
 995 static int sh_hdmi_display_on(struct sh_mobile_lcdc_entity *entity)
 996 {
 997         struct sh_hdmi *hdmi = entity_to_sh_hdmi(entity);
 998
 999         dev_dbg(hdmi->dev, "%s(%p): state %x\n", __func__, hdmi,
1000                 hdmi->hp_state);
1001
1002         /*
1003          * hp_state can be set to
1004          * HDMI_HOTPLUG_DISCONNECTED:   on monitor unplug
1005          * HDMI_HOTPLUG_CONNECTED:      on monitor plug-in
1006          * HDMI_HOTPLUG_EDID_DONE:      on EDID read completion
1007          */
1008         if (hdmi->hp_state == HDMI_HOTPLUG_EDID_DONE) {
1009                 /* PS mode d->e. All functions are active */
1010                 hdmi_write(hdmi, 0x80, HDMI_SYSTEM_CTRL);
1011                 dev_dbg(hdmi->dev, "HDMI running\n");
1012         }
1013
1014         return hdmi->hp_state == HDMI_HOTPLUG_DISCONNECTED
1015                 ? SH_MOBILE_LCDC_DISPLAY_DISCONNECTED
1016                 : SH_MOBILE_LCDC_DISPLAY_CONNECTED;
1017 }
1018
1019 static void sh_hdmi_display_off(struct sh_mobile_lcdc_entity *entity)
1020 {
1021         struct sh_hdmi *hdmi = entity_to_sh_hdmi(entity);
1022
1023         dev_dbg(hdmi->dev, "%s(%p)\n", __func__, hdmi);
1024         /* PS mode e->a */
1025         hdmi_write(hdmi, 0x10, HDMI_SYSTEM_CTRL);
1026 }
1027
1028 static const struct sh_mobile_lcdc_entity_ops sh_hdmi_ops = {
1029         .display_on = sh_hdmi_display_on,
1030         .display_off = sh_hdmi_display_off,
1031 };
1032
1033 /**
1034  * sh_hdmi_clk_configure() - set HDMI clock frequency and enable the clock
1035  * @hdmi:               driver context
1036  * @hdmi_rate:          HDMI clock frequency in Hz
1037  * @parent_rate:        if != 0 - set parent clock rate for optimal precision
1038  * return:              configured positive rate if successful
1039  *                      0 if couldn't set the rate, but managed to enable the
1040  *                      clock, negative error, if couldn't enable the clock
1041  */
1042 static long sh_hdmi_clk_configure(struct sh_hdmi *hdmi, unsigned long hdmi_rate,
1043                                   unsigned long parent_rate)
1044 {
1045         int ret;
1046
1047         if (parent_rate && clk_get_parent(hdmi->hdmi_clk)) {
1048                 ret = clk_set_rate(clk_get_parent(hdmi->hdmi_clk), parent_rate);
1049                 if (ret < 0) {
1050                         dev_warn(hdmi->dev, "Cannot set parent rate %ld: %d\n", parent_rate, ret);
1051                         hdmi_rate = clk_round_rate(hdmi->hdmi_clk, hdmi_rate);
1052                 } else {
1053                         dev_dbg(hdmi->dev, "HDMI set parent frequency %lu\n", parent_rate);
1054                 }
1055         }
1056
1057         ret = clk_set_rate(hdmi->hdmi_clk, hdmi_rate);
1058         if (ret < 0) {
1059                 dev_warn(hdmi->dev, "Cannot set rate %ld: %d\n", hdmi_rate, ret);
1060                 hdmi_rate = 0;
1061         } else {
1062                 dev_dbg(hdmi->dev, "HDMI set frequency %lu\n", hdmi_rate);
1063         }
1064
1065         return hdmi_rate;
1066 }
1067
1068 /* Hotplug interrupt occurred, read EDID */
1069 static void sh_hdmi_edid_work_fn(struct work_struct *work)
1070 {
1071         struct sh_hdmi *hdmi = container_of(work, struct sh_hdmi, edid_work.work);
1072         struct sh_mobile_lcdc_chan *ch = hdmi->entity.lcdc;
1073         int ret;
1074
1075         dev_dbg(hdmi->dev, "%s(%p): begin, hotplug status %d\n", __func__, hdmi,
1076                 hdmi->hp_state);
1077
1078         if (hdmi->hp_state == HDMI_HOTPLUG_CONNECTED) {
1079                 unsigned long parent_rate = 0, hdmi_rate;
1080
1081                 ret = sh_hdmi_read_edid(hdmi, &hdmi_rate, &parent_rate);
1082                 if (ret < 0)
1083                         goto out;
1084
1085                 hdmi->hp_state = HDMI_HOTPLUG_EDID_DONE;
1086
1087                 /* Reconfigure the clock */
1088                 ret = sh_hdmi_clk_configure(hdmi, hdmi_rate, parent_rate);
1089                 if (ret < 0)
1090                         goto out;
1091
1092                 msleep(10);
1093                 sh_hdmi_configure(hdmi);
1094                 /* Switched to another (d) power-save mode */
1095                 msleep(10);
1096
1097                 if (ch && ch->notify)
1098                         ch->notify(ch, SH_MOBILE_LCDC_EVENT_DISPLAY_CONNECT,
1099                                    &hdmi->mode, &hdmi->monspec);
1100         } else {
1101                 hdmi->monspec.modedb_len = 0;
1102                 fb_destroy_modedb(hdmi->monspec.modedb);
1103                 hdmi->monspec.modedb = NULL;
1104
1105                 if (ch && ch->notify)
1106                         ch->notify(ch, SH_MOBILE_LCDC_EVENT_DISPLAY_DISCONNECT,
1107                                    NULL, NULL);
1108
1109                 ret = 0;
1110         }
1111
1112 out:
1113         if (ret < 0 && ret != -EAGAIN)
1114                 hdmi->hp_state = HDMI_HOTPLUG_DISCONNECTED;
1115
1116         dev_dbg(hdmi->dev, "%s(%p): end\n", __func__, hdmi);
1117 }
1118
1119 static int __init sh_hdmi_probe(struct platform_device *pdev)
1120 {
1121         struct sh_mobile_hdmi_info *pdata = pdev->dev.platform_data;
1122         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1123         int irq = platform_get_irq(pdev, 0), ret;
1124         struct sh_hdmi *hdmi;
1125         long rate;
1126
1127         if (!res || !pdata || irq < 0)
1128                 return -ENODEV;
1129
1130         hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
1131         if (!hdmi) {
1132                 dev_err(&pdev->dev, "Cannot allocate device data\n");
1133                 return -ENOMEM;
1134         }
1135
1136         hdmi->dev = &pdev->dev;
1137         hdmi->entity.owner = THIS_MODULE;
1138         hdmi->entity.ops = &sh_hdmi_ops;
1139
1140         hdmi->hdmi_clk = clk_get(&pdev->dev, "ick");
1141         if (IS_ERR(hdmi->hdmi_clk)) {
1142                 ret = PTR_ERR(hdmi->hdmi_clk);
1143                 dev_err(&pdev->dev, "Unable to get clock: %d\n", ret);
1144                 goto egetclk;
1145         }
1146
1147         /* An arbitrary relaxed pixclock just to get things started: from standard 480p */
1148         rate = clk_round_rate(hdmi->hdmi_clk, PICOS2KHZ(37037));
1149         if (rate > 0)
1150                 rate = sh_hdmi_clk_configure(hdmi, rate, 0);
1151
1152         if (rate < 0) {
1153                 ret = rate;
1154                 goto erate;
1155         }
1156
1157         ret = clk_enable(hdmi->hdmi_clk);
1158         if (ret < 0) {
1159                 dev_err(hdmi->dev, "Cannot enable clock: %d\n", ret);
1160                 goto erate;
1161         }
1162
1163         dev_dbg(&pdev->dev, "Enabled HDMI clock at %luHz\n", rate);
1164
1165         if (!request_mem_region(res->start, resource_size(res), dev_name(&pdev->dev))) {
1166                 dev_err(&pdev->dev, "HDMI register region already claimed\n");
1167                 ret = -EBUSY;
1168                 goto ereqreg;
1169         }
1170
1171         hdmi->base = ioremap(res->start, resource_size(res));
1172         if (!hdmi->base) {
1173                 dev_err(&pdev->dev, "HDMI register region already claimed\n");
1174                 ret = -ENOMEM;
1175                 goto emap;
1176         }
1177
1178         platform_set_drvdata(pdev, &hdmi->entity);
1179
1180         INIT_DELAYED_WORK(&hdmi->edid_work, sh_hdmi_edid_work_fn);
1181
1182         pm_runtime_enable(&pdev->dev);
1183         pm_runtime_get_sync(&pdev->dev);
1184
1185         /* Product and revision IDs are 0 in sh-mobile version */
1186         dev_info(&pdev->dev, "Detected HDMI controller 0x%x:0x%x\n",
1187                  hdmi_read(hdmi, HDMI_PRODUCT_ID), hdmi_read(hdmi, HDMI_REVISION_ID));
1188
1189         ret = request_irq(irq, sh_hdmi_hotplug, 0,
1190                           dev_name(&pdev->dev), hdmi);
1191         if (ret < 0) {
1192                 dev_err(&pdev->dev, "Unable to request irq: %d\n", ret);
1193                 goto ereqirq;
1194         }
1195
1196         ret = snd_soc_register_codec(&pdev->dev,
1197                         &soc_codec_dev_sh_hdmi, &sh_hdmi_dai, 1);
1198         if (ret < 0) {
1199                 dev_err(&pdev->dev, "codec registration failed\n");
1200                 goto ecodec;
1201         }
1202
1203         return 0;
1204
1205 ecodec:
1206         free_irq(irq, hdmi);
1207 ereqirq:
1208         pm_runtime_put(&pdev->dev);
1209         pm_runtime_disable(&pdev->dev);
1210         iounmap(hdmi->base);
1211 emap:
1212         release_mem_region(res->start, resource_size(res));
1213 ereqreg:
1214         clk_disable(hdmi->hdmi_clk);
1215 erate:
1216         clk_put(hdmi->hdmi_clk);
1217 egetclk:
1218         kfree(hdmi);
1219
1220         return ret;
1221 }
1222
1223 static int __exit sh_hdmi_remove(struct platform_device *pdev)
1224 {
1225         struct sh_hdmi *hdmi = entity_to_sh_hdmi(platform_get_drvdata(pdev));
1226         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1227         int irq = platform_get_irq(pdev, 0);
1228
1229         snd_soc_unregister_codec(&pdev->dev);
1230
1231         /* No new work will be scheduled, wait for running ISR */
1232         free_irq(irq, hdmi);
1233         /* Wait for already scheduled work */
1234         cancel_delayed_work_sync(&hdmi->edid_work);
1235         pm_runtime_put(&pdev->dev);
1236         pm_runtime_disable(&pdev->dev);
1237         clk_disable(hdmi->hdmi_clk);
1238         clk_put(hdmi->hdmi_clk);
1239         iounmap(hdmi->base);
1240         release_mem_region(res->start, resource_size(res));
1241         kfree(hdmi);
1242
1243         return 0;
1244 }
1245
1246 static struct platform_driver sh_hdmi_driver = {
1247         .remove         = __exit_p(sh_hdmi_remove),
1248         .driver = {
1249                 .name   = "sh-mobile-hdmi",
1250         },
1251 };
1252
1253 static int __init sh_hdmi_init(void)
1254 {
1255         return platform_driver_probe(&sh_hdmi_driver, sh_hdmi_probe);
1256 }
1257 module_init(sh_hdmi_init);
1258
1259 static void __exit sh_hdmi_exit(void)
1260 {
1261         platform_driver_unregister(&sh_hdmi_driver);
1262 }
1263 module_exit(sh_hdmi_exit);
1264
1265 MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
1266 MODULE_DESCRIPTION("SuperH / ARM-shmobile HDMI driver");
1267 MODULE_LICENSE("GPL v2");