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-dapm.h>
  26 #include <sound/initval.h>
  27
  28 #include <video/sh_mobile_hdmi.h>
  29 #include <video/sh_mobile_lcdc.h>
  30
  31 #include "sh_mobile_lcdcfb.h"
  32
  33 #define HDMI_SYSTEM_CTRL                        0x00 /* System control */
  34 #define HDMI_L_R_DATA_SWAP_CTRL_RPKT            0x01 /* L/R data swap control,
  35                                                         bits 19..16 of 20-bit N for Audio Clock Regeneration packet */
  36 #define HDMI_20_BIT_N_FOR_AUDIO_RPKT_15_8       0x02 /* bits 15..8 of 20-bit N for Audio Clock Regeneration packet */
  37 #define HDMI_20_BIT_N_FOR_AUDIO_RPKT_7_0        0x03 /* bits 7..0 of 20-bit N for Audio Clock Regeneration packet */
  38 #define HDMI_SPDIF_AUDIO_SAMP_FREQ_CTS          0x04 /* SPDIF audio sampling frequency,
  39                                                         bits 19..16 of Internal CTS */
  40 #define HDMI_INTERNAL_CTS_15_8                  0x05 /* bits 15..8 of Internal CTS */
  41 #define HDMI_INTERNAL_CTS_7_0                   0x06 /* bits 7..0 of Internal CTS */
  42 #define HDMI_EXTERNAL_CTS_19_16                 0x07 /* External CTS */
  43 #define HDMI_EXTERNAL_CTS_15_8                  0x08 /* External CTS */
  44 #define HDMI_EXTERNAL_CTS_7_0                   0x09 /* External CTS */
  45 #define HDMI_AUDIO_SETTING_1                    0x0A /* Audio setting.1 */
  46 #define HDMI_AUDIO_SETTING_2                    0x0B /* Audio setting.2 */
  47 #define HDMI_I2S_AUDIO_SET                      0x0C /* I2S audio setting */
  48 #define HDMI_DSD_AUDIO_SET                      0x0D /* DSD audio setting */
  49 #define HDMI_DEBUG_MONITOR_1                    0x0E /* Debug monitor.1 */
  50 #define HDMI_DEBUG_MONITOR_2                    0x0F /* Debug monitor.2 */
  51 #define HDMI_I2S_INPUT_PIN_SWAP                 0x10 /* I2S input pin swap */
  52 #define HDMI_AUDIO_STATUS_BITS_SETTING_1        0x11 /* Audio status bits setting.1 */
  53 #define HDMI_AUDIO_STATUS_BITS_SETTING_2        0x12 /* Audio status bits setting.2 */
  54 #define HDMI_CATEGORY_CODE                      0x13 /* Category code */
  55 #define HDMI_SOURCE_NUM_AUDIO_WORD_LEN          0x14 /* Source number/Audio word length */
  56 #define HDMI_AUDIO_VIDEO_SETTING_1              0x15 /* Audio/Video setting.1 */
  57 #define HDMI_VIDEO_SETTING_1                    0x16 /* Video setting.1 */
  58 #define HDMI_DEEP_COLOR_MODES                   0x17 /* Deep Color Modes */
  59
  60 /* 12 16- and 10-bit Color space conversion parameters: 0x18..0x2f */
  61 #define HDMI_COLOR_SPACE_CONVERSION_PARAMETERS  0x18
  62
  63 #define HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS      0x30 /* External video parameter settings */
  64 #define HDMI_EXTERNAL_H_TOTAL_7_0               0x31 /* External horizontal total (LSB) */
  65 #define HDMI_EXTERNAL_H_TOTAL_11_8              0x32 /* External horizontal total (MSB) */
  66 #define HDMI_EXTERNAL_H_BLANK_7_0               0x33 /* External horizontal blank (LSB) */
  67 #define HDMI_EXTERNAL_H_BLANK_9_8               0x34 /* External horizontal blank (MSB) */
  68 #define HDMI_EXTERNAL_H_DELAY_7_0               0x35 /* External horizontal delay (LSB) */
  69 #define HDMI_EXTERNAL_H_DELAY_9_8               0x36 /* External horizontal delay (MSB) */
  70 #define HDMI_EXTERNAL_H_DURATION_7_0            0x37 /* External horizontal duration (LSB) */
  71 #define HDMI_EXTERNAL_H_DURATION_9_8            0x38 /* External horizontal duration (MSB) */
  72 #define HDMI_EXTERNAL_V_TOTAL_7_0               0x39 /* External vertical total (LSB) */
  73 #define HDMI_EXTERNAL_V_TOTAL_9_8               0x3A /* External vertical total (MSB) */
  74 #define HDMI_AUDIO_VIDEO_SETTING_2              0x3B /* Audio/Video setting.2 */
  75 #define HDMI_EXTERNAL_V_BLANK                   0x3D /* External vertical blank */
  76 #define HDMI_EXTERNAL_V_DELAY                   0x3E /* External vertical delay */
  77 #define HDMI_EXTERNAL_V_DURATION                0x3F /* External vertical duration */
  78 #define HDMI_CTRL_PKT_MANUAL_SEND_CONTROL       0x40 /* Control packet manual send control */
  79 #define HDMI_CTRL_PKT_AUTO_SEND                 0x41 /* Control packet auto send with VSYNC control */
  80 #define HDMI_AUTO_CHECKSUM_OPTION               0x42 /* Auto checksum option */
  81 #define HDMI_VIDEO_SETTING_2                    0x45 /* Video setting.2 */
  82 #define HDMI_OUTPUT_OPTION                      0x46 /* Output option */
  83 #define HDMI_SLIPHDMIT_PARAM_OPTION             0x51 /* SLIPHDMIT parameter option */
  84 #define HDMI_HSYNC_PMENT_AT_EMB_7_0             0x52 /* HSYNC placement at embedded sync (LSB) */
  85 #define HDMI_HSYNC_PMENT_AT_EMB_15_8            0x53 /* HSYNC placement at embedded sync (MSB) */
  86 #define HDMI_VSYNC_PMENT_AT_EMB_7_0             0x54 /* VSYNC placement at embedded sync (LSB) */
  87 #define HDMI_VSYNC_PMENT_AT_EMB_14_8            0x55 /* VSYNC placement at embedded sync (MSB) */
  88 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_1         0x56 /* SLIPHDMIT parameter settings.1 */
  89 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_2         0x57 /* SLIPHDMIT parameter settings.2 */
  90 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_3         0x58 /* SLIPHDMIT parameter settings.3 */
  91 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_5         0x59 /* SLIPHDMIT parameter settings.5 */
  92 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_6         0x5A /* SLIPHDMIT parameter settings.6 */
  93 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_7         0x5B /* SLIPHDMIT parameter settings.7 */
  94 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_8         0x5C /* SLIPHDMIT parameter settings.8 */
  95 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_9         0x5D /* SLIPHDMIT parameter settings.9 */
  96 #define HDMI_SLIPHDMIT_PARAM_SETTINGS_10        0x5E /* SLIPHDMIT parameter settings.10 */
  97 #define HDMI_CTRL_PKT_BUF_INDEX                 0x5F /* Control packet buffer index */
  98 #define HDMI_CTRL_PKT_BUF_ACCESS_HB0            0x60 /* Control packet data buffer access window - HB0 */
  99 #define HDMI_CTRL_PKT_BUF_ACCESS_HB1            0x61 /* Control packet data buffer access window - HB1 */
 100 #define HDMI_CTRL_PKT_BUF_ACCESS_HB2            0x62 /* Control packet data buffer access window - HB2 */
 101 #define HDMI_CTRL_PKT_BUF_ACCESS_PB0            0x63 /* Control packet data buffer access window - PB0 */
 102 #define HDMI_CTRL_PKT_BUF_ACCESS_PB1            0x64 /* Control packet data buffer access window - PB1 */
 103 #define HDMI_CTRL_PKT_BUF_ACCESS_PB2            0x65 /* Control packet data buffer access window - PB2 */
 104 #define HDMI_CTRL_PKT_BUF_ACCESS_PB3            0x66 /* Control packet data buffer access window - PB3 */
 105 #define HDMI_CTRL_PKT_BUF_ACCESS_PB4            0x67 /* Control packet data buffer access window - PB4 */
 106 #define HDMI_CTRL_PKT_BUF_ACCESS_PB5            0x68 /* Control packet data buffer access window - PB5 */
 107 #define HDMI_CTRL_PKT_BUF_ACCESS_PB6            0x69 /* Control packet data buffer access window - PB6 */
 108 #define HDMI_CTRL_PKT_BUF_ACCESS_PB7            0x6A /* Control packet data buffer access window - PB7 */
 109 #define HDMI_CTRL_PKT_BUF_ACCESS_PB8            0x6B /* Control packet data buffer access window - PB8 */
 110 #define HDMI_CTRL_PKT_BUF_ACCESS_PB9            0x6C /* Control packet data buffer access window - PB9 */
 111 #define HDMI_CTRL_PKT_BUF_ACCESS_PB10           0x6D /* Control packet data buffer access window - PB10 */
 112 #define HDMI_CTRL_PKT_BUF_ACCESS_PB11           0x6E /* Control packet data buffer access window - PB11 */
 113 #define HDMI_CTRL_PKT_BUF_ACCESS_PB12           0x6F /* Control packet data buffer access window - PB12 */
 114 #define HDMI_CTRL_PKT_BUF_ACCESS_PB13           0x70 /* Control packet data buffer access window - PB13 */
 115 #define HDMI_CTRL_PKT_BUF_ACCESS_PB14           0x71 /* Control packet data buffer access window - PB14 */
 116 #define HDMI_CTRL_PKT_BUF_ACCESS_PB15           0x72 /* Control packet data buffer access window - PB15 */
 117 #define HDMI_CTRL_PKT_BUF_ACCESS_PB16           0x73 /* Control packet data buffer access window - PB16 */
 118 #define HDMI_CTRL_PKT_BUF_ACCESS_PB17           0x74 /* Control packet data buffer access window - PB17 */
 119 #define HDMI_CTRL_PKT_BUF_ACCESS_PB18           0x75 /* Control packet data buffer access window - PB18 */
 120 #define HDMI_CTRL_PKT_BUF_ACCESS_PB19           0x76 /* Control packet data buffer access window - PB19 */
 121 #define HDMI_CTRL_PKT_BUF_ACCESS_PB20           0x77 /* Control packet data buffer access window - PB20 */
 122 #define HDMI_CTRL_PKT_BUF_ACCESS_PB21           0x78 /* Control packet data buffer access window - PB21 */
 123 #define HDMI_CTRL_PKT_BUF_ACCESS_PB22           0x79 /* Control packet data buffer access window - PB22 */
 124 #define HDMI_CTRL_PKT_BUF_ACCESS_PB23           0x7A /* Control packet data buffer access window - PB23 */
 125 #define HDMI_CTRL_PKT_BUF_ACCESS_PB24           0x7B /* Control packet data buffer access window - PB24 */
 126 #define HDMI_CTRL_PKT_BUF_ACCESS_PB25           0x7C /* Control packet data buffer access window - PB25 */
 127 #define HDMI_CTRL_PKT_BUF_ACCESS_PB26           0x7D /* Control packet data buffer access window - PB26 */
 128 #define HDMI_CTRL_PKT_BUF_ACCESS_PB27           0x7E /* Control packet data buffer access window - PB27 */
 129 #define HDMI_EDID_KSV_FIFO_ACCESS_WINDOW        0x80 /* EDID/KSV FIFO access window */
 130 #define HDMI_DDC_BUS_ACCESS_FREQ_CTRL_7_0       0x81 /* DDC bus access frequency control (LSB) */
 131 #define HDMI_DDC_BUS_ACCESS_FREQ_CTRL_15_8      0x82 /* DDC bus access frequency control (MSB) */
 132 #define HDMI_INTERRUPT_MASK_1                   0x92 /* Interrupt mask.1 */
 133 #define HDMI_INTERRUPT_MASK_2                   0x93 /* Interrupt mask.2 */
 134 #define HDMI_INTERRUPT_STATUS_1                 0x94 /* Interrupt status.1 */
 135 #define HDMI_INTERRUPT_STATUS_2                 0x95 /* Interrupt status.2 */
 136 #define HDMI_INTERRUPT_MASK_3                   0x96 /* Interrupt mask.3 */
 137 #define HDMI_INTERRUPT_MASK_4                   0x97 /* Interrupt mask.4 */
 138 #define HDMI_INTERRUPT_STATUS_3                 0x98 /* Interrupt status.3 */
 139 #define HDMI_INTERRUPT_STATUS_4                 0x99 /* Interrupt status.4 */
 140 #define HDMI_SOFTWARE_HDCP_CONTROL_1            0x9A /* Software HDCP control.1 */
 141 #define HDMI_FRAME_COUNTER                      0x9C /* Frame counter */
 142 #define HDMI_FRAME_COUNTER_FOR_RI_CHECK         0x9D /* Frame counter for Ri check */
 143 #define HDMI_HDCP_CONTROL                       0xAF /* HDCP control */
 144 #define HDMI_RI_FRAME_COUNT_REGISTER            0xB2 /* Ri frame count register */
 145 #define HDMI_DDC_BUS_CONTROL                    0xB7 /* DDC bus control */
 146 #define HDMI_HDCP_STATUS                        0xB8 /* HDCP status */
 147 #define HDMI_SHA0                               0xB9 /* sha0 */
 148 #define HDMI_SHA1                               0xBA /* sha1 */
 149 #define HDMI_SHA2                               0xBB /* sha2 */
 150 #define HDMI_SHA3                               0xBC /* sha3 */
 151 #define HDMI_SHA4                               0xBD /* sha4 */
 152 #define HDMI_BCAPS_READ                         0xBE /* BCAPS read / debug */
 153 #define HDMI_AKSV_BKSV_7_0_MONITOR              0xBF /* AKSV/BKSV[7:0] monitor */
 154 #define HDMI_AKSV_BKSV_15_8_MONITOR             0xC0 /* AKSV/BKSV[15:8] monitor */
 155 #define HDMI_AKSV_BKSV_23_16_MONITOR            0xC1 /* AKSV/BKSV[23:16] monitor */
 156 #define HDMI_AKSV_BKSV_31_24_MONITOR            0xC2 /* AKSV/BKSV[31:24] monitor */
 157 #define HDMI_AKSV_BKSV_39_32_MONITOR            0xC3 /* AKSV/BKSV[39:32] monitor */
 158 #define HDMI_EDID_SEGMENT_POINTER               0xC4 /* EDID segment pointer */
 159 #define HDMI_EDID_WORD_ADDRESS                  0xC5 /* EDID word address */
 160 #define HDMI_EDID_DATA_FIFO_ADDRESS             0xC6 /* EDID data FIFO address */
 161 #define HDMI_NUM_OF_HDMI_DEVICES                0xC7 /* Number of HDMI devices */
 162 #define HDMI_HDCP_ERROR_CODE                    0xC8 /* HDCP error code */
 163 #define HDMI_100MS_TIMER_SET                    0xC9 /* 100ms timer setting */
 164 #define HDMI_5SEC_TIMER_SET                     0xCA /* 5sec timer setting */
 165 #define HDMI_RI_READ_COUNT                      0xCB /* Ri read count */
 166 #define HDMI_AN_SEED                            0xCC /* An seed */
 167 #define HDMI_MAX_NUM_OF_RCIVRS_ALLOWED          0xCD /* Maximum number of receivers allowed */
 168 #define HDMI_HDCP_MEMORY_ACCESS_CONTROL_1       0xCE /* HDCP memory access control.1 */
 169 #define HDMI_HDCP_MEMORY_ACCESS_CONTROL_2       0xCF /* HDCP memory access control.2 */
 170 #define HDMI_HDCP_CONTROL_2                     0xD0 /* HDCP Control 2 */
 171 #define HDMI_HDCP_KEY_MEMORY_CONTROL            0xD2 /* HDCP Key Memory Control */
 172 #define HDMI_COLOR_SPACE_CONV_CONFIG_1          0xD3 /* Color space conversion configuration.1 */
 173 #define HDMI_VIDEO_SETTING_3                    0xD4 /* Video setting.3 */
 174 #define HDMI_RI_7_0                             0xD5 /* Ri[7:0] */
 175 #define HDMI_RI_15_8                            0xD6 /* Ri[15:8] */
 176 #define HDMI_PJ                                 0xD7 /* Pj */
 177 #define HDMI_SHA_RD                             0xD8 /* sha_rd */
 178 #define HDMI_RI_7_0_SAVED                       0xD9 /* Ri[7:0] saved */
 179 #define HDMI_RI_15_8_SAVED                      0xDA /* Ri[15:8] saved */
 180 #define HDMI_PJ_SAVED                           0xDB /* Pj saved */
 181 #define HDMI_NUM_OF_DEVICES                     0xDC /* Number of devices */
 182 #define HDMI_HOT_PLUG_MSENS_STATUS              0xDF /* Hot plug/MSENS status */
 183 #define HDMI_BCAPS_WRITE                        0xE0 /* bcaps */
 184 #define HDMI_BSTAT_7_0                          0xE1 /* bstat[7:0] */
 185 #define HDMI_BSTAT_15_8                         0xE2 /* bstat[15:8] */
 186 #define HDMI_BKSV_7_0                           0xE3 /* bksv[7:0] */
 187 #define HDMI_BKSV_15_8                          0xE4 /* bksv[15:8] */
 188 #define HDMI_BKSV_23_16                         0xE5 /* bksv[23:16] */
 189 #define HDMI_BKSV_31_24                         0xE6 /* bksv[31:24] */
 190 #define HDMI_BKSV_39_32                         0xE7 /* bksv[39:32] */
 191 #define HDMI_AN_7_0                             0xE8 /* An[7:0] */
 192 #define HDMI_AN_15_8                            0xE9 /* An [15:8] */
 193 #define HDMI_AN_23_16                           0xEA /* An [23:16] */
 194 #define HDMI_AN_31_24                           0xEB /* An [31:24] */
 195 #define HDMI_AN_39_32                           0xEC /* An [39:32] */
 196 #define HDMI_AN_47_40                           0xED /* An [47:40] */
 197 #define HDMI_AN_55_48                           0xEE /* An [55:48] */
 198 #define HDMI_AN_63_56                           0xEF /* An [63:56] */
 199 #define HDMI_PRODUCT_ID                         0xF0 /* Product ID */
 200 #define HDMI_REVISION_ID                        0xF1 /* Revision ID */
 201 #define HDMI_TEST_MODE                          0xFE /* Test mode */
 202
 203 enum hotplug_state {
 204         HDMI_HOTPLUG_DISCONNECTED,
 205         HDMI_HOTPLUG_CONNECTED,
 206         HDMI_HOTPLUG_EDID_DONE,
 207 };
 208
 209 struct sh_hdmi {
 210         void __iomem *base;
 211         enum hotplug_state hp_state;    /* hot-plug status */
 212         u8 preprogrammed_vic;           /* use a pre-programmed VIC or
 213                                            the external mode */
 214         u8 edid_block_addr;
 215         u8 edid_segment_nr;
 216         u8 edid_blocks;
 217         struct clk *hdmi_clk;
 218         struct device *dev;
 219         struct fb_info *info;
 220         struct mutex mutex;             /* Protect the info pointer */
 221         struct delayed_work edid_work;
 222         struct fb_var_screeninfo var;
 223         struct fb_monspecs monspec;
 224         struct notifier_block notifier;
 225 };
 226
 227 static void hdmi_write(struct sh_hdmi *hdmi, u8 data, u8 reg)
 228 {
 229         iowrite8(data, hdmi->base + reg);
 230 }
 231
 232 static u8 hdmi_read(struct sh_hdmi *hdmi, u8 reg)
 233 {
 234         return ioread8(hdmi->base + reg);
 235 }
 236
 237 /*
 238  *      HDMI sound
 239  */
 240 static unsigned int sh_hdmi_snd_read(struct snd_soc_codec *codec,
 241                                      unsigned int reg)
 242 {
 243         struct sh_hdmi *hdmi = snd_soc_codec_get_drvdata(codec);
 244
 245         return hdmi_read(hdmi, reg);
 246 }
 247
 248 static int sh_hdmi_snd_write(struct snd_soc_codec *codec,
 249                              unsigned int reg,
 250                              unsigned int value)
 251 {
 252         struct sh_hdmi *hdmi = snd_soc_codec_get_drvdata(codec);
 253
 254         hdmi_write(hdmi, value, reg);
 255         return 0;
 256 }
 257
 258 static struct snd_soc_dai_driver sh_hdmi_dai = {
 259         .name = "sh_mobile_hdmi-hifi",
 260         .playback = {
 261                 .stream_name = "Playback",
 262                 .channels_min = 2,
 263                 .channels_max = 8,
 264                 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100  |
 265                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200  |
 266                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |
 267                          SNDRV_PCM_RATE_192000,
 268                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 269         },
 270 };
 271
 272 static int sh_hdmi_snd_probe(struct snd_soc_codec *codec)
 273 {
 274         dev_info(codec->dev, "SH Mobile HDMI Audio Codec");
 275
 276         return 0;
 277 }
 278
 279 static struct snd_soc_codec_driver soc_codec_dev_sh_hdmi = {
 280         .probe          = sh_hdmi_snd_probe,
 281         .read           = sh_hdmi_snd_read,
 282         .write          = sh_hdmi_snd_write,
 283 };
 284
 285 /*
 286  *      HDMI video
 287  */
 288
 289 /* External video parameter settings */
 290 static void sh_hdmi_external_video_param(struct sh_hdmi *hdmi)
 291 {
 292         struct fb_var_screeninfo *var = &hdmi->var;
 293         u16 htotal, hblank, hdelay, vtotal, vblank, vdelay, voffset;
 294         u8 sync = 0;
 295
 296         htotal = var->xres + var->right_margin + var->left_margin + var->hsync_len;
 297
 298         hdelay = var->hsync_len + var->left_margin;
 299         hblank = var->right_margin + hdelay;
 300
 301         /*
 302          * Vertical timing looks a bit different in Figure 18,
 303          * but let's try the same first by setting offset = 0
 304          */
 305         vtotal = var->yres + var->upper_margin + var->lower_margin + var->vsync_len;
 306
 307         vdelay = var->vsync_len + var->upper_margin;
 308         vblank = var->lower_margin + vdelay;
 309         voffset = min(var->upper_margin / 2, 6U);
 310
 311         /*
 312          * [3]: VSYNC polarity: Positive
 313          * [2]: HSYNC polarity: Positive
 314          * [1]: Interlace/Progressive: Progressive
 315          * [0]: External video settings enable: used.
 316          */
 317         if (var->sync & FB_SYNC_HOR_HIGH_ACT)
 318                 sync |= 4;
 319         if (var->sync & FB_SYNC_VERT_HIGH_ACT)
 320                 sync |= 8;
 321
 322         dev_dbg(hdmi->dev, "H: %u, %u, %u, %u; V: %u, %u, %u, %u; sync 0x%x\n",
 323                 htotal, hblank, hdelay, var->hsync_len,
 324                 vtotal, vblank, vdelay, var->vsync_len, sync);
 325
 326         hdmi_write(hdmi, sync | (voffset << 4), HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS);
 327
 328         hdmi_write(hdmi, htotal, HDMI_EXTERNAL_H_TOTAL_7_0);
 329         hdmi_write(hdmi, htotal >> 8, HDMI_EXTERNAL_H_TOTAL_11_8);
 330
 331         hdmi_write(hdmi, hblank, HDMI_EXTERNAL_H_BLANK_7_0);
 332         hdmi_write(hdmi, hblank >> 8, HDMI_EXTERNAL_H_BLANK_9_8);
 333
 334         hdmi_write(hdmi, hdelay, HDMI_EXTERNAL_H_DELAY_7_0);
 335         hdmi_write(hdmi, hdelay >> 8, HDMI_EXTERNAL_H_DELAY_9_8);
 336
 337         hdmi_write(hdmi, var->hsync_len, HDMI_EXTERNAL_H_DURATION_7_0);
 338         hdmi_write(hdmi, var->hsync_len >> 8, HDMI_EXTERNAL_H_DURATION_9_8);
 339
 340         hdmi_write(hdmi, vtotal, HDMI_EXTERNAL_V_TOTAL_7_0);
 341         hdmi_write(hdmi, vtotal >> 8, HDMI_EXTERNAL_V_TOTAL_9_8);
 342
 343         hdmi_write(hdmi, vblank, HDMI_EXTERNAL_V_BLANK);
 344
 345         hdmi_write(hdmi, vdelay, HDMI_EXTERNAL_V_DELAY);
 346
 347         hdmi_write(hdmi, var->vsync_len, HDMI_EXTERNAL_V_DURATION);
 348
 349         /* Set bit 0 of HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS here for external mode */
 350         if (!hdmi->preprogrammed_vic)
 351                 hdmi_write(hdmi, sync | 1 | (voffset << 4),
 352                            HDMI_EXTERNAL_VIDEO_PARAM_SETTINGS);
 353 }
 354
 355 /**
 356  * sh_hdmi_video_config()
 357  */
 358 static void sh_hdmi_video_config(struct sh_hdmi *hdmi)
 359 {
 360         /*
 361          * [7:4]: Audio sampling frequency: 48kHz
 362          * [3:1]: Input video format: RGB and YCbCr 4:4:4 (Y on Green)
 363          * [0]: Internal/External DE select: internal
 364          */
 365         hdmi_write(hdmi, 0x20, HDMI_AUDIO_VIDEO_SETTING_1);
 366
 367         /*
 368          * [7:6]: Video output format: RGB 4:4:4
 369          * [5:4]: Input video data width: 8 bit
 370          * [3:1]: EAV/SAV location: channel 1
 371          * [0]: Video input color space: RGB
 372          */
 373         hdmi_write(hdmi, 0x34, HDMI_VIDEO_SETTING_1);
 374
 375         /*
 376          * [7:6]: Together with bit [6] of HDMI_AUDIO_VIDEO_SETTING_2, which is
 377          * left at 0 by default, this configures 24bpp and sets the Color Depth
 378          * (CD) field in the General Control Packet
 379          */
 380         hdmi_write(hdmi, 0x20, HDMI_DEEP_COLOR_MODES);
 381 }
 382
 383 /**
 384  * sh_hdmi_audio_config()
 385  */
 386 static void sh_hdmi_audio_config(struct sh_hdmi *hdmi)
 387 {
 388         u8 data;
 389         struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
 390
 391         /*
 392          * [7:4] L/R data swap control
 393          * [3:0] appropriate N[19:16]
 394          */
 395         hdmi_write(hdmi, 0x00, HDMI_L_R_DATA_SWAP_CTRL_RPKT);
 396         /* appropriate N[15:8] */
 397         hdmi_write(hdmi, 0x18, HDMI_20_BIT_N_FOR_AUDIO_RPKT_15_8);
 398         /* appropriate N[7:0] */
 399         hdmi_write(hdmi, 0x00, HDMI_20_BIT_N_FOR_AUDIO_RPKT_7_0);
 400
 401         /* [7:4] 48 kHz SPDIF not used */
 402         hdmi_write(hdmi, 0x20, HDMI_SPDIF_AUDIO_SAMP_FREQ_CTS);
 403
 404         /*
 405          * [6:5] set required down sampling rate if required
 406          * [4:3] set required audio source
 407          */
 408         switch (pdata->flags & HDMI_SND_SRC_MASK) {
 409         default:
 410                 /* fall through */
 411         case HDMI_SND_SRC_I2S:
 412                 data = 0x0 << 3;
 413                 break;
 414         case HDMI_SND_SRC_SPDIF:
 415                 data = 0x1 << 3;
 416                 break;
 417         case HDMI_SND_SRC_DSD:
 418                 data = 0x2 << 3;
 419                 break;
 420         case HDMI_SND_SRC_HBR:
 421                 data = 0x3 << 3;
 422                 break;
 423         }
 424         hdmi_write(hdmi, data, HDMI_AUDIO_SETTING_1);
 425
 426         /* [3:0] set sending channel number for channel status */
 427         hdmi_write(hdmi, 0x40, HDMI_AUDIO_SETTING_2);
 428
 429         /*
 430          * [5:2] set valid I2S source input pin
 431          * [1:0] set input I2S source mode
 432          */
 433         hdmi_write(hdmi, 0x04, HDMI_I2S_AUDIO_SET);
 434
 435         /* [7:4] set valid DSD source input pin */
 436         hdmi_write(hdmi, 0x00, HDMI_DSD_AUDIO_SET);
 437
 438         /* [7:0] set appropriate I2S input pin swap settings if required */
 439         hdmi_write(hdmi, 0x00, HDMI_I2S_INPUT_PIN_SWAP);
 440
 441         /*
 442          * [7] set validity bit for channel status
 443          * [3:0] set original sample frequency for channel status
 444          */
 445         hdmi_write(hdmi, 0x00, HDMI_AUDIO_STATUS_BITS_SETTING_1);
 446
 447         /*
 448          * [7] set value for channel status
 449          * [6] set value for channel status
 450          * [5] set copyright bit for channel status
 451          * [4:2] set additional information for channel status
 452          * [1:0] set clock accuracy for channel status
 453          */
 454         hdmi_write(hdmi, 0x00, HDMI_AUDIO_STATUS_BITS_SETTING_2);
 455
 456         /* [7:0] set category code for channel status */
 457         hdmi_write(hdmi, 0x00, HDMI_CATEGORY_CODE);
 458
 459         /*
 460          * [7:4] set source number for channel status
 461          * [3:0] set word length for channel status
 462          */
 463         hdmi_write(hdmi, 0x00, HDMI_SOURCE_NUM_AUDIO_WORD_LEN);
 464
 465         /* [7:4] set sample frequency for channel status */
 466         hdmi_write(hdmi, 0x20, HDMI_AUDIO_VIDEO_SETTING_1);
 467 }
 468
 469 /**
 470  * sh_hdmi_phy_config() - configure the HDMI PHY for the used video mode
 471  */
 472 static void sh_hdmi_phy_config(struct sh_hdmi *hdmi)
 473 {
 474         if (hdmi->var.pixclock < 10000) {
 475                 /* for 1080p8bit 148MHz */
 476                 hdmi_write(hdmi, 0x1d, HDMI_SLIPHDMIT_PARAM_SETTINGS_1);
 477                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_2);
 478                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_3);
 479                 hdmi_write(hdmi, 0x4c, HDMI_SLIPHDMIT_PARAM_SETTINGS_5);
 480                 hdmi_write(hdmi, 0x1e, HDMI_SLIPHDMIT_PARAM_SETTINGS_6);
 481                 hdmi_write(hdmi, 0x48, HDMI_SLIPHDMIT_PARAM_SETTINGS_7);
 482                 hdmi_write(hdmi, 0x0e, HDMI_SLIPHDMIT_PARAM_SETTINGS_8);
 483                 hdmi_write(hdmi, 0x25, HDMI_SLIPHDMIT_PARAM_SETTINGS_9);
 484                 hdmi_write(hdmi, 0x04, HDMI_SLIPHDMIT_PARAM_SETTINGS_10);
 485         } else if (hdmi->var.pixclock < 30000) {
 486                 /* 720p, 8bit, 74.25MHz. Might need to be adjusted for other formats */
 487                 /*
 488                  * [1:0]        Speed_A
 489                  * [3:2]        Speed_B
 490                  * [4]          PLLA_Bypass
 491                  * [6]          DRV_TEST_EN
 492                  * [7]          DRV_TEST_IN
 493                  */
 494                 hdmi_write(hdmi, 0x0f, HDMI_SLIPHDMIT_PARAM_SETTINGS_1);
 495                 /* PLLB_CONFIG[17], PLLA_CONFIG[17] - not in PHY datasheet */
 496                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_2);
 497                 /*
 498                  * [2:0]        BGR_I_OFFSET
 499                  * [6:4]        BGR_V_OFFSET
 500                  */
 501                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_3);
 502                 /* PLLA_CONFIG[7:0]: VCO gain, VCO offset, LPF resistance[0] */
 503                 hdmi_write(hdmi, 0x44, HDMI_SLIPHDMIT_PARAM_SETTINGS_5);
 504                 /*
 505                  * PLLA_CONFIG[15:8]: regulator voltage[0], CP current,
 506                  * LPF capacitance, LPF resistance[1]
 507                  */
 508                 hdmi_write(hdmi, 0x32, HDMI_SLIPHDMIT_PARAM_SETTINGS_6);
 509                 /* PLLB_CONFIG[7:0]: LPF resistance[0], VCO offset, VCO gain */
 510                 hdmi_write(hdmi, 0x4A, HDMI_SLIPHDMIT_PARAM_SETTINGS_7);
 511                 /*
 512                  * PLLB_CONFIG[15:8]: regulator voltage[0], CP current,
 513                  * LPF capacitance, LPF resistance[1]
 514                  */
 515                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_8);
 516                 /* DRV_CONFIG, PE_CONFIG */
 517                 hdmi_write(hdmi, 0x25, HDMI_SLIPHDMIT_PARAM_SETTINGS_9);
 518                 /*
 519                  * [2:0]        AMON_SEL (4 == LPF voltage)
 520                  * [4]          PLLA_CONFIG[16]
 521                  * [5]          PLLB_CONFIG[16]
 522                  */
 523                 hdmi_write(hdmi, 0x04, HDMI_SLIPHDMIT_PARAM_SETTINGS_10);
 524         } else {
 525                 /* for 480p8bit 27MHz */
 526                 hdmi_write(hdmi, 0x19, HDMI_SLIPHDMIT_PARAM_SETTINGS_1);
 527                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_2);
 528                 hdmi_write(hdmi, 0x00, HDMI_SLIPHDMIT_PARAM_SETTINGS_3);
 529                 hdmi_write(hdmi, 0x44, HDMI_SLIPHDMIT_PARAM_SETTINGS_5);
 530                 hdmi_write(hdmi, 0x32, HDMI_SLIPHDMIT_PARAM_SETTINGS_6);
 531                 hdmi_write(hdmi, 0x48, HDMI_SLIPHDMIT_PARAM_SETTINGS_7);
 532                 hdmi_write(hdmi, 0x0F, HDMI_SLIPHDMIT_PARAM_SETTINGS_8);
 533                 hdmi_write(hdmi, 0x20, HDMI_SLIPHDMIT_PARAM_SETTINGS_9);
 534                 hdmi_write(hdmi, 0x04, HDMI_SLIPHDMIT_PARAM_SETTINGS_10);
 535         }
 536 }
 537
 538 /**
 539  * sh_hdmi_avi_infoframe_setup() - Auxiliary Video Information InfoFrame CONTROL PACKET
 540  */
 541 static void sh_hdmi_avi_infoframe_setup(struct sh_hdmi *hdmi)
 542 {
 543         u8 vic;
 544
 545         /* AVI InfoFrame */
 546         hdmi_write(hdmi, 0x06, HDMI_CTRL_PKT_BUF_INDEX);
 547
 548         /* Packet Type = 0x82 */
 549         hdmi_write(hdmi, 0x82, HDMI_CTRL_PKT_BUF_ACCESS_HB0);
 550
 551         /* Version = 0x02 */
 552         hdmi_write(hdmi, 0x02, HDMI_CTRL_PKT_BUF_ACCESS_HB1);
 553
 554         /* Length = 13 (0x0D) */
 555         hdmi_write(hdmi, 0x0D, HDMI_CTRL_PKT_BUF_ACCESS_HB2);
 556
 557         /* N. A. Checksum */
 558         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB0);
 559
 560         /*
 561          * Y = RGB
 562          * A0 = No Data
 563          * B = Bar Data not valid
 564          * S = No Data
 565          */
 566         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB1);
 567
 568         /*
 569          * [7:6] C = Colorimetry: no data
 570          * [5:4] M = 2: 16:9, 1: 4:3 Picture Aspect Ratio
 571          * [3:0] R = 8: Active Frame Aspect Ratio: same as picture aspect ratio
 572          */
 573         hdmi_write(hdmi, 0x28, HDMI_CTRL_PKT_BUF_ACCESS_PB2);
 574
 575         /*
 576          * ITC = No Data
 577          * EC = xvYCC601
 578          * Q = Default (depends on video format)
 579          * SC = No Known non_uniform Scaling
 580          */
 581         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB3);
 582
 583         /*
 584          * VIC should be ignored if external config is used, so, we could just use 0,
 585          * but play safe and use a valid value in any case just in case
 586          */
 587         if (hdmi->preprogrammed_vic)
 588                 vic = hdmi->preprogrammed_vic;
 589         else
 590                 vic = 4;
 591         hdmi_write(hdmi, vic, HDMI_CTRL_PKT_BUF_ACCESS_PB4);
 592
 593         /* PR = No Repetition */
 594         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB5);
 595
 596         /* Line Number of End of Top Bar (lower 8 bits) */
 597         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB6);
 598
 599         /* Line Number of End of Top Bar (upper 8 bits) */
 600         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB7);
 601
 602         /* Line Number of Start of Bottom Bar (lower 8 bits) */
 603         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB8);
 604
 605         /* Line Number of Start of Bottom Bar (upper 8 bits) */
 606         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB9);
 607
 608         /* Pixel Number of End of Left Bar (lower 8 bits) */
 609         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB10);
 610
 611         /* Pixel Number of End of Left Bar (upper 8 bits) */
 612         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB11);
 613
 614         /* Pixel Number of Start of Right Bar (lower 8 bits) */
 615         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB12);
 616
 617         /* Pixel Number of Start of Right Bar (upper 8 bits) */
 618         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB13);
 619 }
 620
 621 /**
 622  * sh_hdmi_audio_infoframe_setup() - Audio InfoFrame of CONTROL PACKET
 623  */
 624 static void sh_hdmi_audio_infoframe_setup(struct sh_hdmi *hdmi)
 625 {
 626         /* Audio InfoFrame */
 627         hdmi_write(hdmi, 0x08, HDMI_CTRL_PKT_BUF_INDEX);
 628
 629         /* Packet Type = 0x84 */
 630         hdmi_write(hdmi, 0x84, HDMI_CTRL_PKT_BUF_ACCESS_HB0);
 631
 632         /* Version Number = 0x01 */
 633         hdmi_write(hdmi, 0x01, HDMI_CTRL_PKT_BUF_ACCESS_HB1);
 634
 635         /* 0 Length = 10 (0x0A) */
 636         hdmi_write(hdmi, 0x0A, HDMI_CTRL_PKT_BUF_ACCESS_HB2);
 637
 638         /* n. a. Checksum */
 639         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB0);
 640
 641         /* Audio Channel Count = Refer to Stream Header */
 642         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB1);
 643
 644         /* Refer to Stream Header */
 645         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB2);
 646
 647         /* Format depends on coding type (i.e. CT0...CT3) */
 648         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB3);
 649
 650         /* Speaker Channel Allocation = Front Right + Front Left */
 651         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB4);
 652
 653         /* Level Shift Value = 0 dB, Down - mix is permitted or no information */
 654         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB5);
 655
 656         /* Reserved (0) */
 657         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB6);
 658         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB7);
 659         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB8);
 660         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB9);
 661         hdmi_write(hdmi, 0x00, HDMI_CTRL_PKT_BUF_ACCESS_PB10);
 662 }
 663
 664 /**
 665  * sh_hdmi_configure() - Initialise HDMI for output
 666  */
 667 static void sh_hdmi_configure(struct sh_hdmi *hdmi)
 668 {
 669         /* Configure video format */
 670         sh_hdmi_video_config(hdmi);
 671
 672         /* Configure audio format */
 673         sh_hdmi_audio_config(hdmi);
 674
 675         /* Configure PHY */
 676         sh_hdmi_phy_config(hdmi);
 677
 678         /* Auxiliary Video Information (AVI) InfoFrame */
 679         sh_hdmi_avi_infoframe_setup(hdmi);
 680
 681         /* Audio InfoFrame */
 682         sh_hdmi_audio_infoframe_setup(hdmi);
 683
 684         /*
 685          * Control packet auto send with VSYNC control: auto send
 686          * General control, Gamut metadata, ISRC, and ACP packets
 687          */
 688         hdmi_write(hdmi, 0x8E, HDMI_CTRL_PKT_AUTO_SEND);
 689
 690         /* FIXME */
 691         msleep(10);
 692
 693         /* PS mode b->d, reset PLLA and PLLB */
 694         hdmi_write(hdmi, 0x4C, HDMI_SYSTEM_CTRL);
 695
 696         udelay(10);
 697
 698         hdmi_write(hdmi, 0x40, HDMI_SYSTEM_CTRL);
 699 }
 700
 701 static unsigned long sh_hdmi_rate_error(struct sh_hdmi *hdmi,
 702                 const struct fb_videomode *mode,
 703                 unsigned long *hdmi_rate, unsigned long *parent_rate)
 704 {
 705         unsigned long target = PICOS2KHZ(mode->pixclock) * 1000, rate_error;
 706         struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
 707
 708         *hdmi_rate = clk_round_rate(hdmi->hdmi_clk, target);
 709         if ((long)*hdmi_rate < 0)
 710                 *hdmi_rate = clk_get_rate(hdmi->hdmi_clk);
 711
 712         rate_error = (long)*hdmi_rate > 0 ? abs(*hdmi_rate - target) : ULONG_MAX;
 713         if (rate_error && pdata->clk_optimize_parent)
 714                 rate_error = pdata->clk_optimize_parent(target, hdmi_rate, parent_rate);
 715         else if (clk_get_parent(hdmi->hdmi_clk))
 716                 *parent_rate = clk_get_rate(clk_get_parent(hdmi->hdmi_clk));
 717
 718         dev_dbg(hdmi->dev, "%u-%u-%u-%u x %u-%u-%u-%u\n",
 719                 mode->left_margin, mode->xres,
 720                 mode->right_margin, mode->hsync_len,
 721                 mode->upper_margin, mode->yres,
 722                 mode->lower_margin, mode->vsync_len);
 723
 724         dev_dbg(hdmi->dev, "\t@%lu(+/-%lu)Hz, e=%lu / 1000, r=%uHz, p=%luHz\n", target,
 725                 rate_error, rate_error ? 10000 / (10 * target / rate_error) : 0,
 726                 mode->refresh, *parent_rate);
 727
 728         return rate_error;
 729 }
 730
 731 static int sh_hdmi_read_edid(struct sh_hdmi *hdmi, unsigned long *hdmi_rate,
 732                              unsigned long *parent_rate)
 733 {
 734         struct fb_var_screeninfo tmpvar;
 735         struct fb_var_screeninfo *var = &tmpvar;
 736         const struct fb_videomode *mode, *found = NULL;
 737         struct fb_info *info = hdmi->info;
 738         struct fb_modelist *modelist = NULL;
 739         unsigned int f_width = 0, f_height = 0, f_refresh = 0;
 740         unsigned long found_rate_error = ULONG_MAX; /* silly compiler... */
 741         bool scanning = false, preferred_bad = false;
 742         u8 edid[128];
 743         char *forced;
 744         int i;
 745
 746         /* Read EDID */
 747         dev_dbg(hdmi->dev, "Read back EDID code:");
 748         for (i = 0; i < 128; i++) {
 749                 edid[i] = hdmi_read(hdmi, HDMI_EDID_KSV_FIFO_ACCESS_WINDOW);
 750 #ifdef DEBUG
 751                 if ((i % 16) == 0) {
 752                         printk(KERN_CONT "\n");
 753                         printk(KERN_DEBUG "%02X | %02X", i, edid[i]);
 754                 } else {
 755                         printk(KERN_CONT " %02X", edid[i]);
 756                 }
 757 #endif
 758         }
 759 #ifdef DEBUG
 760         printk(KERN_CONT "\n");
 761 #endif
 762
 763         if (!hdmi->edid_blocks) {
 764                 fb_edid_to_monspecs(edid, &hdmi->monspec);
 765                 hdmi->edid_blocks = edid[126] + 1;
 766
 767                 dev_dbg(hdmi->dev, "%d main modes, %d extension blocks\n",
 768                         hdmi->monspec.modedb_len, hdmi->edid_blocks - 1);
 769         } else {
 770                 dev_dbg(hdmi->dev, "Extension %u detected, DTD start %u\n",
 771                         edid[0], edid[2]);
 772                 fb_edid_add_monspecs(edid, &hdmi->monspec);
 773         }
 774
 775         if (hdmi->edid_blocks > hdmi->edid_segment_nr * 2 +
 776             (hdmi->edid_block_addr >> 7) + 1) {
 777                 /* More blocks to read */
 778                 if (hdmi->edid_block_addr) {
 779                         hdmi->edid_block_addr = 0;
 780                         hdmi->edid_segment_nr++;
 781                 } else {
 782                         hdmi->edid_block_addr = 0x80;
 783                 }
 784                 /* Set EDID word address  */
 785                 hdmi_write(hdmi, hdmi->edid_block_addr, HDMI_EDID_WORD_ADDRESS);
 786                 /* Enable EDID interrupt */
 787                 hdmi_write(hdmi, 0xC6, HDMI_INTERRUPT_MASK_1);
 788                 /* Set EDID segment pointer - starts reading EDID */
 789                 hdmi_write(hdmi, hdmi->edid_segment_nr, HDMI_EDID_SEGMENT_POINTER);
 790                 return -EAGAIN;
 791         }
 792
 793         /* All E-EDID blocks ready */
 794         dev_dbg(hdmi->dev, "%d main and extended modes\n", hdmi->monspec.modedb_len);
 795
 796         fb_get_options("sh_mobile_lcdc", &forced);
 797         if (forced && *forced) {
 798                 /* Only primitive parsing so far */
 799                 i = sscanf(forced, "%ux%u@%u",
 800                            &f_width, &f_height, &f_refresh);
 801                 if (i < 2) {
 802                         f_width = 0;
 803                         f_height = 0;
 804                 } else {
 805                         /* The user wants us to use the EDID data */
 806                         scanning = true;
 807                 }
 808                 dev_dbg(hdmi->dev, "Forced mode %ux%u@%uHz\n",
 809                         f_width, f_height, f_refresh);
 810         }
 811
 812         /* Walk monitor modes to find the best or the exact match */
 813         for (i = 0, mode = hdmi->monspec.modedb;
 814              i < hdmi->monspec.modedb_len && scanning;
 815              i++, mode++) {
 816                 unsigned long rate_error;
 817
 818                 if (!f_width && !f_height) {
 819                         /*
 820                          * A parameter string "video=sh_mobile_lcdc:0x0" means
 821                          * use the preferred EDID mode. If it is rejected by
 822                          * .fb_check_var(), keep looking, until an acceptable
 823                          * one is found.
 824                          */
 825                         if ((mode->flag & FB_MODE_IS_FIRST) || preferred_bad)
 826                                 scanning = false;
 827                         else
 828                                 continue;
 829                 } else if (f_width != mode->xres || f_height != mode->yres) {
 830                         /* No interest in unmatching modes */
 831                         continue;
 832                 }
 833
 834                 rate_error = sh_hdmi_rate_error(hdmi, mode, hdmi_rate, parent_rate);
 835
 836                 if (scanning) {
 837                         if (f_refresh == mode->refresh || (!f_refresh && !rate_error))
 838                                 /*
 839                                  * Exact match if either the refresh rate
 840                                  * matches or it hasn't been specified and we've
 841                                  * found a mode, for which we can configure the
 842                                  * clock precisely
 843                                  */
 844                                 scanning = false;
 845                         else if (found && found_rate_error <= rate_error)
 846                                 /*
 847                                  * We otherwise search for the closest matching
 848                                  * clock rate - either if no refresh rate has
 849                                  * been specified or we cannot find an exactly
 850                                  * matching one
 851                                  */
 852                                 continue;
 853                 }
 854
 855                 /* Check if supported: sufficient fb memory, supported clock-rate */
 856                 fb_videomode_to_var(var, mode);
 857
 858                 var->bits_per_pixel = info->var.bits_per_pixel;
 859
 860                 if (info && info->fbops->fb_check_var &&
 861                     info->fbops->fb_check_var(var, info)) {
 862                         scanning = true;
 863                         preferred_bad = true;
 864                         continue;
 865                 }
 866
 867                 found = mode;
 868                 found_rate_error = rate_error;
 869         }
 870
 871         hdmi->var.width = hdmi->monspec.max_x * 10;
 872         hdmi->var.height = hdmi->monspec.max_y * 10;
 873
 874         /*
 875          * TODO 1: if no ->info is present, postpone running the config until
 876          * after ->info first gets registered.
 877          * TODO 2: consider registering the HDMI platform device from the LCDC
 878          * driver, and passing ->info with HDMI platform data.
 879          */
 880         if (info && !found) {
 881                 modelist = info->modelist.next &&
 882                         !list_empty(&info->modelist) ?
 883                         list_entry(info->modelist.next,
 884                                    struct fb_modelist, list) :
 885                         NULL;
 886
 887                 if (modelist) {
 888                         found = &modelist->mode;
 889                         found_rate_error = sh_hdmi_rate_error(hdmi, found, hdmi_rate, parent_rate);
 890                 }
 891         }
 892
 893         /* No cookie today */
 894         if (!found)
 895                 return -ENXIO;
 896
 897         if (found->xres == 640 && found->yres == 480 && found->refresh == 60)
 898                 hdmi->preprogrammed_vic = 1;
 899         else if (found->xres == 720 && found->yres == 480 && found->refresh == 60)
 900                 hdmi->preprogrammed_vic = 2;
 901         else if (found->xres == 720 && found->yres == 576 && found->refresh == 50)
 902                 hdmi->preprogrammed_vic = 17;
 903         else if (found->xres == 1280 && found->yres == 720 && found->refresh == 60)
 904                 hdmi->preprogrammed_vic = 4;
 905         else if (found->xres == 1920 && found->yres == 1080 && found->refresh == 24)
 906                 hdmi->preprogrammed_vic = 32;
 907         else if (found->xres == 1920 && found->yres == 1080 && found->refresh == 50)
 908                 hdmi->preprogrammed_vic = 31;
 909         else if (found->xres == 1920 && found->yres == 1080 && found->refresh == 60)
 910                 hdmi->preprogrammed_vic = 16;
 911         else
 912                 hdmi->preprogrammed_vic = 0;
 913
 914         dev_dbg(hdmi->dev, "Using %s %s mode %ux%u@%uHz (%luHz), clock error %luHz\n",
 915                 modelist ? "default" : "EDID", hdmi->preprogrammed_vic ? "VIC" : "external",
 916                 found->xres, found->yres, found->refresh,
 917                 PICOS2KHZ(found->pixclock) * 1000, found_rate_error);
 918
 919         fb_videomode_to_var(&hdmi->var, found);
 920         sh_hdmi_external_video_param(hdmi);
 921
 922         return 0;
 923 }
 924
 925 static irqreturn_t sh_hdmi_hotplug(int irq, void *dev_id)
 926 {
 927         struct sh_hdmi *hdmi = dev_id;
 928         u8 status1, status2, mask1, mask2;
 929
 930         /* mode_b and PLLA and PLLB reset */
 931         hdmi_write(hdmi, 0x2C, HDMI_SYSTEM_CTRL);
 932
 933         /* How long shall reset be held? */
 934         udelay(10);
 935
 936         /* mode_b and PLLA and PLLB reset release */
 937         hdmi_write(hdmi, 0x20, HDMI_SYSTEM_CTRL);
 938
 939         status1 = hdmi_read(hdmi, HDMI_INTERRUPT_STATUS_1);
 940         status2 = hdmi_read(hdmi, HDMI_INTERRUPT_STATUS_2);
 941
 942         mask1 = hdmi_read(hdmi, HDMI_INTERRUPT_MASK_1);
 943         mask2 = hdmi_read(hdmi, HDMI_INTERRUPT_MASK_2);
 944
 945         /* Correct would be to ack only set bits, but the datasheet requires 0xff */
 946         hdmi_write(hdmi, 0xFF, HDMI_INTERRUPT_STATUS_1);
 947         hdmi_write(hdmi, 0xFF, HDMI_INTERRUPT_STATUS_2);
 948
 949         if (printk_ratelimit())
 950                 dev_dbg(hdmi->dev, "IRQ #%d: Status #1: 0x%x & 0x%x, #2: 0x%x & 0x%x\n",
 951                         irq, status1, mask1, status2, mask2);
 952
 953         if (!((status1 & mask1) | (status2 & mask2))) {
 954                 return IRQ_NONE;
 955         } else if (status1 & 0xc0) {
 956                 u8 msens;
 957
 958                 /* Datasheet specifies 10ms... */
 959                 udelay(500);
 960
 961                 msens = hdmi_read(hdmi, HDMI_HOT_PLUG_MSENS_STATUS);
 962                 dev_dbg(hdmi->dev, "MSENS 0x%x\n", msens);
 963                 /* Check, if hot plug & MSENS pin status are both high */
 964                 if ((msens & 0xC0) == 0xC0) {
 965                         /* Display plug in */
 966                         hdmi->edid_segment_nr = 0;
 967                         hdmi->edid_block_addr = 0;
 968                         hdmi->edid_blocks = 0;
 969                         hdmi->hp_state = HDMI_HOTPLUG_CONNECTED;
 970
 971                         /* Set EDID word address  */
 972                         hdmi_write(hdmi, 0x00, HDMI_EDID_WORD_ADDRESS);
 973                         /* Enable EDID interrupt */
 974                         hdmi_write(hdmi, 0xC6, HDMI_INTERRUPT_MASK_1);
 975                         /* Set EDID segment pointer - starts reading EDID */
 976                         hdmi_write(hdmi, 0x00, HDMI_EDID_SEGMENT_POINTER);
 977                 } else if (!(status1 & 0x80)) {
 978                         /* Display unplug, beware multiple interrupts */
 979                         if (hdmi->hp_state != HDMI_HOTPLUG_DISCONNECTED) {
 980                                 hdmi->hp_state = HDMI_HOTPLUG_DISCONNECTED;
 981                                 schedule_delayed_work(&hdmi->edid_work, 0);
 982                         }
 983                         /* display_off will switch back to mode_a */
 984                 }
 985         } else if (status1 & 2) {
 986                 /* EDID error interrupt: retry */
 987                 /* Set EDID word address  */
 988                 hdmi_write(hdmi, hdmi->edid_block_addr, HDMI_EDID_WORD_ADDRESS);
 989                 /* Set EDID segment pointer */
 990                 hdmi_write(hdmi, hdmi->edid_segment_nr, HDMI_EDID_SEGMENT_POINTER);
 991         } else if (status1 & 4) {
 992                 /* Disable EDID interrupt */
 993                 hdmi_write(hdmi, 0xC0, HDMI_INTERRUPT_MASK_1);
 994                 schedule_delayed_work(&hdmi->edid_work, msecs_to_jiffies(10));
 995         }
 996
 997         return IRQ_HANDLED;
 998 }
 999
1000 /* locking:     called with info->lock held, or before register_framebuffer() */
1001 static void sh_hdmi_display_on(void *arg, struct fb_info *info)
1002 {
1003         /*
1004          * info is guaranteed to be valid, when we are called, because our
1005          * FB_EVENT_FB_UNBIND notify is also called with info->lock held
1006          */
1007         struct sh_hdmi *hdmi = arg;
1008         struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
1009         struct sh_mobile_lcdc_chan *ch = info->par;
1010
1011         dev_dbg(hdmi->dev, "%s(%p): state %x\n", __func__,
1012                 pdata->lcd_dev, info->state);
1013
1014         /* No need to lock */
1015         hdmi->info = info;
1016
1017         /*
1018          * hp_state can be set to
1019          * HDMI_HOTPLUG_DISCONNECTED:   on monitor unplug
1020          * HDMI_HOTPLUG_CONNECTED:      on monitor plug-in
1021          * HDMI_HOTPLUG_EDID_DONE:      on EDID read completion
1022          */
1023         switch (hdmi->hp_state) {
1024         case HDMI_HOTPLUG_EDID_DONE:
1025                 /* PS mode d->e. All functions are active */
1026                 hdmi_write(hdmi, 0x80, HDMI_SYSTEM_CTRL);
1027                 dev_dbg(hdmi->dev, "HDMI running\n");
1028                 break;
1029         case HDMI_HOTPLUG_DISCONNECTED:
1030                 info->state = FBINFO_STATE_SUSPENDED;
1031         default:
1032                 hdmi->var = ch->display_var;
1033         }
1034 }
1035
1036 /* locking: called with info->lock held */
1037 static void sh_hdmi_display_off(void *arg)
1038 {
1039         struct sh_hdmi *hdmi = arg;
1040         struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
1041
1042         dev_dbg(hdmi->dev, "%s(%p)\n", __func__, pdata->lcd_dev);
1043         /* PS mode e->a */
1044         hdmi_write(hdmi, 0x10, HDMI_SYSTEM_CTRL);
1045 }
1046
1047 static bool sh_hdmi_must_reconfigure(struct sh_hdmi *hdmi)
1048 {
1049         struct fb_info *info = hdmi->info;
1050         struct sh_mobile_lcdc_chan *ch = info->par;
1051         struct fb_var_screeninfo *new_var = &hdmi->var, *old_var = &ch->display_var;
1052         struct fb_videomode mode1, mode2;
1053
1054         fb_var_to_videomode(&mode1, old_var);
1055         fb_var_to_videomode(&mode2, new_var);
1056
1057         dev_dbg(info->dev, "Old %ux%u, new %ux%u\n",
1058                 mode1.xres, mode1.yres, mode2.xres, mode2.yres);
1059
1060         if (fb_mode_is_equal(&mode1, &mode2)) {
1061                 /* It can be a different monitor with an equal video-mode */
1062                 old_var->width = new_var->width;
1063                 old_var->height = new_var->height;
1064                 return false;
1065         }
1066
1067         dev_dbg(info->dev, "Switching %u -> %u lines\n",
1068                 mode1.yres, mode2.yres);
1069         *old_var = *new_var;
1070
1071         return true;
1072 }
1073
1074 /**
1075  * sh_hdmi_clk_configure() - set HDMI clock frequency and enable the clock
1076  * @hdmi:               driver context
1077  * @hdmi_rate:          HDMI clock frequency in Hz
1078  * @parent_rate:        if != 0 - set parent clock rate for optimal precision
1079  * return:              configured positive rate if successful
1080  *                      0 if couldn't set the rate, but managed to enable the
1081  *                      clock, negative error, if couldn't enable the clock
1082  */
1083 static long sh_hdmi_clk_configure(struct sh_hdmi *hdmi, unsigned long hdmi_rate,
1084                                   unsigned long parent_rate)
1085 {
1086         int ret;
1087
1088         if (parent_rate && clk_get_parent(hdmi->hdmi_clk)) {
1089                 ret = clk_set_rate(clk_get_parent(hdmi->hdmi_clk), parent_rate);
1090                 if (ret < 0) {
1091                         dev_warn(hdmi->dev, "Cannot set parent rate %ld: %d\n", parent_rate, ret);
1092                         hdmi_rate = clk_round_rate(hdmi->hdmi_clk, hdmi_rate);
1093                 } else {
1094                         dev_dbg(hdmi->dev, "HDMI set parent frequency %lu\n", parent_rate);
1095                 }
1096         }
1097
1098         ret = clk_set_rate(hdmi->hdmi_clk, hdmi_rate);
1099         if (ret < 0) {
1100                 dev_warn(hdmi->dev, "Cannot set rate %ld: %d\n", hdmi_rate, ret);
1101                 hdmi_rate = 0;
1102         } else {
1103                 dev_dbg(hdmi->dev, "HDMI set frequency %lu\n", hdmi_rate);
1104         }
1105
1106         return hdmi_rate;
1107 }
1108
1109 /* Hotplug interrupt occurred, read EDID */
1110 static void sh_hdmi_edid_work_fn(struct work_struct *work)
1111 {
1112         struct sh_hdmi *hdmi = container_of(work, struct sh_hdmi, edid_work.work);
1113         struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
1114         struct sh_mobile_lcdc_chan *ch;
1115         int ret;
1116
1117         dev_dbg(hdmi->dev, "%s(%p): begin, hotplug status %d\n", __func__,
1118                 pdata->lcd_dev, hdmi->hp_state);
1119
1120         if (!pdata->lcd_dev)
1121                 return;
1122
1123         mutex_lock(&hdmi->mutex);
1124
1125         if (hdmi->hp_state == HDMI_HOTPLUG_CONNECTED) {
1126                 struct fb_info *info = hdmi->info;
1127                 unsigned long parent_rate = 0, hdmi_rate;
1128
1129                 /* A device has been plugged in */
1130                 pm_runtime_get_sync(hdmi->dev);
1131
1132                 ret = sh_hdmi_read_edid(hdmi, &hdmi_rate, &parent_rate);
1133                 if (ret < 0)
1134                         goto out;
1135
1136                 hdmi->hp_state = HDMI_HOTPLUG_EDID_DONE;
1137
1138                 /* Reconfigure the clock */
1139                 ret = sh_hdmi_clk_configure(hdmi, hdmi_rate, parent_rate);
1140                 if (ret < 0)
1141                         goto out;
1142
1143                 msleep(10);
1144                 sh_hdmi_configure(hdmi);
1145                 /* Switched to another (d) power-save mode */
1146                 msleep(10);
1147
1148                 if (!info)
1149                         goto out;
1150
1151                 ch = info->par;
1152
1153                 acquire_console_sem();
1154
1155                 /* HDMI plug in */
1156                 if (!sh_hdmi_must_reconfigure(hdmi) &&
1157                     info->state == FBINFO_STATE_RUNNING) {
1158                         /*
1159                          * First activation with the default monitor - just turn
1160                          * on, if we run a resume here, the logo disappears
1161                          */
1162                         if (lock_fb_info(info)) {
1163                                 info->var.width = hdmi->var.width;
1164                                 info->var.height = hdmi->var.height;
1165                                 sh_hdmi_display_on(hdmi, info);
1166                                 unlock_fb_info(info);
1167                         }
1168                 } else {
1169                         /* New monitor or have to wake up */
1170                         fb_set_suspend(info, 0);
1171                 }
1172
1173                 release_console_sem();
1174         } else {
1175                 ret = 0;
1176                 if (!hdmi->info)
1177                         goto out;
1178
1179                 hdmi->monspec.modedb_len = 0;
1180                 fb_destroy_modedb(hdmi->monspec.modedb);
1181                 hdmi->monspec.modedb = NULL;
1182
1183                 acquire_console_sem();
1184
1185                 /* HDMI disconnect */
1186                 fb_set_suspend(hdmi->info, 1);
1187
1188                 release_console_sem();
1189                 pm_runtime_put(hdmi->dev);
1190         }
1191
1192 out:
1193         if (ret < 0 && ret != -EAGAIN)
1194                 hdmi->hp_state = HDMI_HOTPLUG_DISCONNECTED;
1195         mutex_unlock(&hdmi->mutex);
1196
1197         dev_dbg(hdmi->dev, "%s(%p): end\n", __func__, pdata->lcd_dev);
1198 }
1199
1200 static int sh_hdmi_notify(struct notifier_block *nb,
1201                           unsigned long action, void *data)
1202 {
1203         struct fb_event *event = data;
1204         struct fb_info *info = event->info;
1205         struct sh_mobile_lcdc_chan *ch = info->par;
1206         struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg;
1207         struct sh_hdmi *hdmi = board_cfg->board_data;
1208
1209         if (!hdmi || nb != &hdmi->notifier || hdmi->info != info)
1210                 return NOTIFY_DONE;
1211
1212         switch(action) {
1213         case FB_EVENT_FB_REGISTERED:
1214                 /* Unneeded, activation taken care by sh_hdmi_display_on() */
1215                 break;
1216         case FB_EVENT_FB_UNREGISTERED:
1217                 /*
1218                  * We are called from unregister_framebuffer() with the
1219                  * info->lock held. This is bad for us, because we can race with
1220                  * the scheduled work, which has to call fb_set_suspend(), which
1221                  * takes info->lock internally, so, sh_hdmi_edid_work_fn()
1222                  * cannot take and hold info->lock for the whole function
1223                  * duration. Using an additional lock creates a classical AB-BA
1224                  * lock up. Therefore, we have to release the info->lock
1225                  * temporarily, synchronise with the work queue and re-acquire
1226                  * the info->lock.
1227                  */
1228                 unlock_fb_info(info);
1229                 mutex_lock(&hdmi->mutex);
1230                 hdmi->info = NULL;
1231                 mutex_unlock(&hdmi->mutex);
1232                 lock_fb_info(info);
1233                 return NOTIFY_OK;
1234         }
1235         return NOTIFY_DONE;
1236 }
1237
1238 static int __init sh_hdmi_probe(struct platform_device *pdev)
1239 {
1240         struct sh_mobile_hdmi_info *pdata = pdev->dev.platform_data;
1241         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1242         struct sh_mobile_lcdc_board_cfg *board_cfg;
1243         int irq = platform_get_irq(pdev, 0), ret;
1244         struct sh_hdmi *hdmi;
1245         long rate;
1246
1247         if (!res || !pdata || irq < 0)
1248                 return -ENODEV;
1249
1250         hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
1251         if (!hdmi) {
1252                 dev_err(&pdev->dev, "Cannot allocate device data\n");
1253                 return -ENOMEM;
1254         }
1255
1256         mutex_init(&hdmi->mutex);
1257
1258         hdmi->dev = &pdev->dev;
1259
1260         hdmi->hdmi_clk = clk_get(&pdev->dev, "ick");
1261         if (IS_ERR(hdmi->hdmi_clk)) {
1262                 ret = PTR_ERR(hdmi->hdmi_clk);
1263                 dev_err(&pdev->dev, "Unable to get clock: %d\n", ret);
1264                 goto egetclk;
1265         }
1266
1267         /* An arbitrary relaxed pixclock just to get things started: from standard 480p */
1268         rate = clk_round_rate(hdmi->hdmi_clk, PICOS2KHZ(37037));
1269         if (rate > 0)
1270                 rate = sh_hdmi_clk_configure(hdmi, rate, 0);
1271
1272         if (rate < 0) {
1273                 ret = rate;
1274                 goto erate;
1275         }
1276
1277         ret = clk_enable(hdmi->hdmi_clk);
1278         if (ret < 0) {
1279                 dev_err(hdmi->dev, "Cannot enable clock: %d\n", ret);
1280                 goto erate;
1281         }
1282
1283         dev_dbg(&pdev->dev, "Enabled HDMI clock at %luHz\n", rate);
1284
1285         if (!request_mem_region(res->start, resource_size(res), dev_name(&pdev->dev))) {
1286                 dev_err(&pdev->dev, "HDMI register region already claimed\n");
1287                 ret = -EBUSY;
1288                 goto ereqreg;
1289         }
1290
1291         hdmi->base = ioremap(res->start, resource_size(res));
1292         if (!hdmi->base) {
1293                 dev_err(&pdev->dev, "HDMI register region already claimed\n");
1294                 ret = -ENOMEM;
1295                 goto emap;
1296         }
1297
1298         platform_set_drvdata(pdev, hdmi);
1299
1300         /* Set up LCDC callbacks */
1301         board_cfg = &pdata->lcd_chan->board_cfg;
1302         board_cfg->owner = THIS_MODULE;
1303         board_cfg->board_data = hdmi;
1304         board_cfg->display_on = sh_hdmi_display_on;
1305         board_cfg->display_off = sh_hdmi_display_off;
1306
1307         INIT_DELAYED_WORK(&hdmi->edid_work, sh_hdmi_edid_work_fn);
1308
1309         pm_runtime_enable(&pdev->dev);
1310         pm_runtime_resume(&pdev->dev);
1311
1312         /* Product and revision IDs are 0 in sh-mobile version */
1313         dev_info(&pdev->dev, "Detected HDMI controller 0x%x:0x%x\n",
1314                  hdmi_read(hdmi, HDMI_PRODUCT_ID), hdmi_read(hdmi, HDMI_REVISION_ID));
1315
1316         ret = request_irq(irq, sh_hdmi_hotplug, 0,
1317                           dev_name(&pdev->dev), hdmi);
1318         if (ret < 0) {
1319                 dev_err(&pdev->dev, "Unable to request irq: %d\n", ret);
1320                 goto ereqirq;
1321         }
1322
1323         ret = snd_soc_register_codec(&pdev->dev,
1324                         &soc_codec_dev_sh_hdmi, &sh_hdmi_dai, 1);
1325         if (ret < 0) {
1326                 dev_err(&pdev->dev, "codec registration failed\n");
1327                 goto ecodec;
1328         }
1329
1330         hdmi->notifier.notifier_call = sh_hdmi_notify;
1331         fb_register_client(&hdmi->notifier);
1332
1333         return 0;
1334
1335 ecodec:
1336         free_irq(irq, hdmi);
1337 ereqirq:
1338         pm_runtime_disable(&pdev->dev);
1339         iounmap(hdmi->base);
1340 emap:
1341         release_mem_region(res->start, resource_size(res));
1342 ereqreg:
1343         clk_disable(hdmi->hdmi_clk);
1344 erate:
1345         clk_put(hdmi->hdmi_clk);
1346 egetclk:
1347         mutex_destroy(&hdmi->mutex);
1348         kfree(hdmi);
1349
1350         return ret;
1351 }
1352
1353 static int __exit sh_hdmi_remove(struct platform_device *pdev)
1354 {
1355         struct sh_mobile_hdmi_info *pdata = pdev->dev.platform_data;
1356         struct sh_hdmi *hdmi = platform_get_drvdata(pdev);
1357         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1358         struct sh_mobile_lcdc_board_cfg *board_cfg = &pdata->lcd_chan->board_cfg;
1359         int irq = platform_get_irq(pdev, 0);
1360
1361         snd_soc_unregister_codec(&pdev->dev);
1362
1363         fb_unregister_client(&hdmi->notifier);
1364
1365         board_cfg->display_on = NULL;
1366         board_cfg->display_off = NULL;
1367         board_cfg->board_data = NULL;
1368         board_cfg->owner = NULL;
1369
1370         /* No new work will be scheduled, wait for running ISR */
1371         free_irq(irq, hdmi);
1372         /* Wait for already scheduled work */
1373         cancel_delayed_work_sync(&hdmi->edid_work);
1374         pm_runtime_disable(&pdev->dev);
1375         clk_disable(hdmi->hdmi_clk);
1376         clk_put(hdmi->hdmi_clk);
1377         iounmap(hdmi->base);
1378         release_mem_region(res->start, resource_size(res));
1379         mutex_destroy(&hdmi->mutex);
1380         kfree(hdmi);
1381
1382         return 0;
1383 }
1384
1385 static struct platform_driver sh_hdmi_driver = {
1386         .remove         = __exit_p(sh_hdmi_remove),
1387         .driver = {
1388                 .name   = "sh-mobile-hdmi",
1389         },
1390 };
1391
1392 static int __init sh_hdmi_init(void)
1393 {
1394         return platform_driver_probe(&sh_hdmi_driver, sh_hdmi_probe);
1395 }
1396 module_init(sh_hdmi_init);
1397
1398 static void __exit sh_hdmi_exit(void)
1399 {
1400         platform_driver_unregister(&sh_hdmi_driver);
1401 }
1402 module_exit(sh_hdmi_exit);
1403
1404 MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
1405 MODULE_DESCRIPTION("SuperH / ARM-shmobile HDMI driver");
1406 MODULE_LICENSE("GPL v2");