drivers/media/dvb/frontends/au8522_decoder.c

   1 /*
   2  * Auvitek AU8522 QAM/8VSB demodulator driver and video decoder
   3  *
   4  * Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
   5  * Copyright (C) 2005-2008 Auvitek International, Ltd.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * As published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20  * 02110-1301, USA.
  21  */
  22
  23 /* Developer notes:
  24  *
  25  * VBI support is not yet working
  26  * Saturation and hue setting are not yet working
  27  * Enough is implemented here for CVBS and S-Video inputs, but the actual
  28  *  analog demodulator code isn't implemented (not needed for xc5000 since it
  29  *  has its own demodulator and outputs CVBS)
  30  *
  31  */
  32
  33 #include <linux/kernel.h>
  34 #include <linux/slab.h>
  35 #include <linux/videodev2.h>
  36 #include <linux/i2c.h>
  37 #include <linux/delay.h>
  38 #include <media/v4l2-common.h>
  39 #include <media/v4l2-chip-ident.h>
  40 #include <media/v4l2-i2c-drv.h>
  41 #include <media/v4l2-device.h>
  42 #include "au8522.h"
  43 #include "au8522_priv.h"
  44
  45 MODULE_AUTHOR("Devin Heitmueller");
  46 MODULE_LICENSE("GPL");
  47
  48 static int au8522_analog_debug;
  49
  50
  51 module_param_named(analog_debug, au8522_analog_debug, int, 0644);
  52
  53 MODULE_PARM_DESC(analog_debug,
  54                  "Analog debugging messages [0=Off (default) 1=On]");
  55
  56 struct au8522_register_config {
  57         u16 reg_name;
  58         u8 reg_val[8];
  59 };
  60
  61
  62 /* Video Decoder Filter Coefficients
  63    The values are as follows from left to right
  64    0="ATV RF" 1="ATV RF13" 2="CVBS" 3="S-Video" 4="PAL" 5=CVBS13" 6="SVideo13"
  65 */
  66 struct au8522_register_config filter_coef[] = {
  67         {AU8522_FILTER_COEF_R410, {0x25, 0x00, 0x25, 0x25, 0x00, 0x00, 0x00} },
  68         {AU8522_FILTER_COEF_R411, {0x20, 0x00, 0x20, 0x20, 0x00, 0x00, 0x00} },
  69         {AU8522_FILTER_COEF_R412, {0x03, 0x00, 0x03, 0x03, 0x00, 0x00, 0x00} },
  70         {AU8522_FILTER_COEF_R413, {0xe6, 0x00, 0xe6, 0xe6, 0x00, 0x00, 0x00} },
  71         {AU8522_FILTER_COEF_R414, {0x40, 0x00, 0x40, 0x40, 0x00, 0x00, 0x00} },
  72         {AU8522_FILTER_COEF_R415, {0x1b, 0x00, 0x1b, 0x1b, 0x00, 0x00, 0x00} },
  73         {AU8522_FILTER_COEF_R416, {0xc0, 0x00, 0xc0, 0x04, 0x00, 0x00, 0x00} },
  74         {AU8522_FILTER_COEF_R417, {0x04, 0x00, 0x04, 0x04, 0x00, 0x00, 0x00} },
  75         {AU8522_FILTER_COEF_R418, {0x8c, 0x00, 0x8c, 0x8c, 0x00, 0x00, 0x00} },
  76         {AU8522_FILTER_COEF_R419, {0xa0, 0x40, 0xa0, 0xa0, 0x40, 0x40, 0x40} },
  77         {AU8522_FILTER_COEF_R41A, {0x21, 0x09, 0x21, 0x21, 0x09, 0x09, 0x09} },
  78         {AU8522_FILTER_COEF_R41B, {0x6c, 0x38, 0x6c, 0x6c, 0x38, 0x38, 0x38} },
  79         {AU8522_FILTER_COEF_R41C, {0x03, 0xff, 0x03, 0x03, 0xff, 0xff, 0xff} },
  80         {AU8522_FILTER_COEF_R41D, {0xbf, 0xc7, 0xbf, 0xbf, 0xc7, 0xc7, 0xc7} },
  81         {AU8522_FILTER_COEF_R41E, {0xa0, 0xdf, 0xa0, 0xa0, 0xdf, 0xdf, 0xdf} },
  82         {AU8522_FILTER_COEF_R41F, {0x10, 0x06, 0x10, 0x10, 0x06, 0x06, 0x06} },
  83         {AU8522_FILTER_COEF_R420, {0xae, 0x30, 0xae, 0xae, 0x30, 0x30, 0x30} },
  84         {AU8522_FILTER_COEF_R421, {0xc4, 0x01, 0xc4, 0xc4, 0x01, 0x01, 0x01} },
  85         {AU8522_FILTER_COEF_R422, {0x54, 0xdd, 0x54, 0x54, 0xdd, 0xdd, 0xdd} },
  86         {AU8522_FILTER_COEF_R423, {0xd0, 0xaf, 0xd0, 0xd0, 0xaf, 0xaf, 0xaf} },
  87         {AU8522_FILTER_COEF_R424, {0x1c, 0xf7, 0x1c, 0x1c, 0xf7, 0xf7, 0xf7} },
  88         {AU8522_FILTER_COEF_R425, {0x76, 0xdb, 0x76, 0x76, 0xdb, 0xdb, 0xdb} },
  89         {AU8522_FILTER_COEF_R426, {0x61, 0xc0, 0x61, 0x61, 0xc0, 0xc0, 0xc0} },
  90         {AU8522_FILTER_COEF_R427, {0xd1, 0x2f, 0xd1, 0xd1, 0x2f, 0x2f, 0x2f} },
  91         {AU8522_FILTER_COEF_R428, {0x84, 0xd8, 0x84, 0x84, 0xd8, 0xd8, 0xd8} },
  92         {AU8522_FILTER_COEF_R429, {0x06, 0xfb, 0x06, 0x06, 0xfb, 0xfb, 0xfb} },
  93         {AU8522_FILTER_COEF_R42A, {0x21, 0xd5, 0x21, 0x21, 0xd5, 0xd5, 0xd5} },
  94         {AU8522_FILTER_COEF_R42B, {0x0a, 0x3e, 0x0a, 0x0a, 0x3e, 0x3e, 0x3e} },
  95         {AU8522_FILTER_COEF_R42C, {0xe6, 0x15, 0xe6, 0xe6, 0x15, 0x15, 0x15} },
  96         {AU8522_FILTER_COEF_R42D, {0x01, 0x34, 0x01, 0x01, 0x34, 0x34, 0x34} },
  97
  98 };
  99 #define NUM_FILTER_COEF (sizeof(filter_coef)\
 100                          / sizeof(struct au8522_register_config))
 101
 102
 103 /* Registers 0x060b through 0x0652 are the LP Filter coefficients
 104    The values are as follows from left to right
 105    0="SIF" 1="ATVRF/ATVRF13"
 106    Note: the "ATVRF/ATVRF13" mode has never been tested
 107 */
 108 struct au8522_register_config lpfilter_coef[] = {
 109         {0x060b, {0x21, 0x0b} },
 110         {0x060c, {0xad, 0xad} },
 111         {0x060d, {0x70, 0xf0} },
 112         {0x060e, {0xea, 0xe9} },
 113         {0x060f, {0xdd, 0xdd} },
 114         {0x0610, {0x08, 0x64} },
 115         {0x0611, {0x60, 0x60} },
 116         {0x0612, {0xf8, 0xb2} },
 117         {0x0613, {0x01, 0x02} },
 118         {0x0614, {0xe4, 0xb4} },
 119         {0x0615, {0x19, 0x02} },
 120         {0x0616, {0xae, 0x2e} },
 121         {0x0617, {0xee, 0xc5} },
 122         {0x0618, {0x56, 0x56} },
 123         {0x0619, {0x30, 0x58} },
 124         {0x061a, {0xf9, 0xf8} },
 125         {0x061b, {0x24, 0x64} },
 126         {0x061c, {0x07, 0x07} },
 127         {0x061d, {0x30, 0x30} },
 128         {0x061e, {0xa9, 0xed} },
 129         {0x061f, {0x09, 0x0b} },
 130         {0x0620, {0x42, 0xc2} },
 131         {0x0621, {0x1d, 0x2a} },
 132         {0x0622, {0xd6, 0x56} },
 133         {0x0623, {0x95, 0x8b} },
 134         {0x0624, {0x2b, 0x2b} },
 135         {0x0625, {0x30, 0x24} },
 136         {0x0626, {0x3e, 0x3e} },
 137         {0x0627, {0x62, 0xe2} },
 138         {0x0628, {0xe9, 0xf5} },
 139         {0x0629, {0x99, 0x19} },
 140         {0x062a, {0xd4, 0x11} },
 141         {0x062b, {0x03, 0x04} },
 142         {0x062c, {0xb5, 0x85} },
 143         {0x062d, {0x1e, 0x20} },
 144         {0x062e, {0x2a, 0xea} },
 145         {0x062f, {0xd7, 0xd2} },
 146         {0x0630, {0x15, 0x15} },
 147         {0x0631, {0xa3, 0xa9} },
 148         {0x0632, {0x1f, 0x1f} },
 149         {0x0633, {0xf9, 0xd1} },
 150         {0x0634, {0xc0, 0xc3} },
 151         {0x0635, {0x4d, 0x8d} },
 152         {0x0636, {0x21, 0x31} },
 153         {0x0637, {0x83, 0x83} },
 154         {0x0638, {0x08, 0x8c} },
 155         {0x0639, {0x19, 0x19} },
 156         {0x063a, {0x45, 0xa5} },
 157         {0x063b, {0xef, 0xec} },
 158         {0x063c, {0x8a, 0x8a} },
 159         {0x063d, {0xf4, 0xf6} },
 160         {0x063e, {0x8f, 0x8f} },
 161         {0x063f, {0x44, 0x0c} },
 162         {0x0640, {0xef, 0xf0} },
 163         {0x0641, {0x66, 0x66} },
 164         {0x0642, {0xcc, 0xd2} },
 165         {0x0643, {0x41, 0x41} },
 166         {0x0644, {0x63, 0x93} },
 167         {0x0645, {0x8e, 0x8e} },
 168         {0x0646, {0xa2, 0x42} },
 169         {0x0647, {0x7b, 0x7b} },
 170         {0x0648, {0x04, 0x04} },
 171         {0x0649, {0x00, 0x00} },
 172         {0x064a, {0x40, 0x40} },
 173         {0x064b, {0x8c, 0x98} },
 174         {0x064c, {0x00, 0x00} },
 175         {0x064d, {0x63, 0xc3} },
 176         {0x064e, {0x04, 0x04} },
 177         {0x064f, {0x20, 0x20} },
 178         {0x0650, {0x00, 0x00} },
 179         {0x0651, {0x40, 0x40} },
 180         {0x0652, {0x01, 0x01} },
 181 };
 182 #define NUM_LPFILTER_COEF (sizeof(lpfilter_coef)\
 183                            / sizeof(struct au8522_register_config))
 184
 185 static inline struct au8522_state *to_state(struct v4l2_subdev *sd)
 186 {
 187         return container_of(sd, struct au8522_state, sd);
 188 }
 189
 190 static void setup_vbi(struct au8522_state *state, int aud_input)
 191 {
 192         int i;
 193
 194         /* These are set to zero regardless of what mode we're in */
 195         au8522_writereg(state, AU8522_TVDEC_VBI_CTRL_H_REG017H, 0x00);
 196         au8522_writereg(state, AU8522_TVDEC_VBI_CTRL_L_REG018H, 0x00);
 197         au8522_writereg(state, AU8522_TVDEC_VBI_USER_TOTAL_BITS_REG019H, 0x00);
 198         au8522_writereg(state, AU8522_TVDEC_VBI_USER_TUNIT_H_REG01AH, 0x00);
 199         au8522_writereg(state, AU8522_TVDEC_VBI_USER_TUNIT_L_REG01BH, 0x00);
 200         au8522_writereg(state, AU8522_TVDEC_VBI_USER_THRESH1_REG01CH, 0x00);
 201         au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_PAT2_REG01EH, 0x00);
 202         au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_PAT1_REG01FH, 0x00);
 203         au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_PAT0_REG020H, 0x00);
 204         au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_MASK2_REG021H,
 205                         0x00);
 206         au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_MASK1_REG022H,
 207                         0x00);
 208         au8522_writereg(state, AU8522_TVDEC_VBI_USER_FRAME_MASK0_REG023H,
 209                         0x00);
 210
 211         /* Setup the VBI registers */
 212         for (i = 0x30; i < 0x60; i++)
 213                 au8522_writereg(state, i, 0x40);
 214
 215         /* For some reason, every register is 0x40 except register 0x44
 216            (confirmed via the HVR-950q USB capture) */
 217         au8522_writereg(state, 0x44, 0x60);
 218
 219         /* Enable VBI (we always do this regardless of whether the user is
 220            viewing closed caption info) */
 221         au8522_writereg(state, AU8522_TVDEC_VBI_CTRL_H_REG017H,
 222                         AU8522_TVDEC_VBI_CTRL_H_REG017H_CCON);
 223
 224 }
 225
 226 static void setup_decoder_defaults(struct au8522_state *state, u8 input_mode)
 227 {
 228         int i;
 229         int filter_coef_type;
 230
 231         /* Provide reasonable defaults for picture tuning values */
 232         au8522_writereg(state, AU8522_TVDEC_SHARPNESSREG009H, 0x07);
 233         au8522_writereg(state, AU8522_TVDEC_BRIGHTNESS_REG00AH, 0xed);
 234         state->brightness = 0xed - 128;
 235         au8522_writereg(state, AU8522_TVDEC_CONTRAST_REG00BH, 0x79);
 236         state->contrast = 0x79;
 237         au8522_writereg(state, AU8522_TVDEC_SATURATION_CB_REG00CH, 0x80);
 238         au8522_writereg(state, AU8522_TVDEC_SATURATION_CR_REG00DH, 0x80);
 239         au8522_writereg(state, AU8522_TVDEC_HUE_H_REG00EH, 0x00);
 240         au8522_writereg(state, AU8522_TVDEC_HUE_L_REG00FH, 0x00);
 241
 242         /* Other decoder registers */
 243         au8522_writereg(state, AU8522_TVDEC_INT_MASK_REG010H, 0x00);
 244
 245         if (input_mode == 0x23) {
 246                 /* S-Video input mapping */
 247                 au8522_writereg(state, AU8522_VIDEO_MODE_REG011H, 0x04);
 248         } else {
 249                 /* All other modes (CVBS/ATVRF etc.) */
 250                 au8522_writereg(state, AU8522_VIDEO_MODE_REG011H, 0x00);
 251         }
 252
 253         au8522_writereg(state, AU8522_TVDEC_PGA_REG012H,
 254                         AU8522_TVDEC_PGA_REG012H_CVBS);
 255         au8522_writereg(state, AU8522_TVDEC_COMB_MODE_REG015H,
 256                         AU8522_TVDEC_COMB_MODE_REG015H_CVBS);
 257         au8522_writereg(state, AU8522_TVDED_DBG_MODE_REG060H,
 258                         AU8522_TVDED_DBG_MODE_REG060H_CVBS);
 259         au8522_writereg(state, AU8522_TVDEC_FORMAT_CTRL1_REG061H,
 260                         AU8522_TVDEC_FORMAT_CTRL1_REG061H_CVBS13);
 261         au8522_writereg(state, AU8522_TVDEC_FORMAT_CTRL2_REG062H,
 262                         AU8522_TVDEC_FORMAT_CTRL2_REG062H_CVBS13);
 263         au8522_writereg(state, AU8522_TVDEC_VCR_DET_LLIM_REG063H,
 264                         AU8522_TVDEC_VCR_DET_LLIM_REG063H_CVBS);
 265         au8522_writereg(state, AU8522_TVDEC_VCR_DET_HLIM_REG064H,
 266                         AU8522_TVDEC_VCR_DET_HLIM_REG064H_CVBS);
 267         au8522_writereg(state, AU8522_TVDEC_COMB_VDIF_THR1_REG065H,
 268                         AU8522_TVDEC_COMB_VDIF_THR1_REG065H_CVBS);
 269         au8522_writereg(state, AU8522_TVDEC_COMB_VDIF_THR2_REG066H,
 270                         AU8522_TVDEC_COMB_VDIF_THR2_REG066H_CVBS);
 271         au8522_writereg(state, AU8522_TVDEC_COMB_VDIF_THR3_REG067H,
 272                         AU8522_TVDEC_COMB_VDIF_THR3_REG067H_CVBS);
 273         au8522_writereg(state, AU8522_TVDEC_COMB_NOTCH_THR_REG068H,
 274                         AU8522_TVDEC_COMB_NOTCH_THR_REG068H_CVBS);
 275         au8522_writereg(state, AU8522_TVDEC_COMB_HDIF_THR1_REG069H,
 276                         AU8522_TVDEC_COMB_HDIF_THR1_REG069H_CVBS);
 277         au8522_writereg(state, AU8522_TVDEC_COMB_HDIF_THR2_REG06AH,
 278                         AU8522_TVDEC_COMB_HDIF_THR2_REG06AH_CVBS);
 279         au8522_writereg(state, AU8522_TVDEC_COMB_HDIF_THR3_REG06BH,
 280                         AU8522_TVDEC_COMB_HDIF_THR3_REG06BH_CVBS);
 281         au8522_writereg(state, AU8522_TVDEC_COMB_DCDIF_THR1_REG06CH,
 282                         AU8522_TVDEC_COMB_DCDIF_THR1_REG06CH_CVBS);
 283         au8522_writereg(state, AU8522_TVDEC_COMB_DCDIF_THR2_REG06DH,
 284                         AU8522_TVDEC_COMB_DCDIF_THR2_REG06DH_CVBS);
 285         au8522_writereg(state, AU8522_TVDEC_COMB_DCDIF_THR3_REG06EH,
 286                         AU8522_TVDEC_COMB_DCDIF_THR3_REG06EH_CVBS);
 287         au8522_writereg(state, AU8522_TVDEC_UV_SEP_THR_REG06FH,
 288                         AU8522_TVDEC_UV_SEP_THR_REG06FH_CVBS);
 289         au8522_writereg(state, AU8522_TVDEC_COMB_DC_THR1_NTSC_REG070H,
 290                         AU8522_TVDEC_COMB_DC_THR1_NTSC_REG070H_CVBS);
 291         au8522_writereg(state, AU8522_REG071H, AU8522_REG071H_CVBS);
 292         au8522_writereg(state, AU8522_REG072H, AU8522_REG072H_CVBS);
 293         au8522_writereg(state, AU8522_TVDEC_COMB_DC_THR2_NTSC_REG073H,
 294                         AU8522_TVDEC_COMB_DC_THR2_NTSC_REG073H_CVBS);
 295         au8522_writereg(state, AU8522_REG074H, AU8522_REG074H_CVBS);
 296         au8522_writereg(state, AU8522_REG075H, AU8522_REG075H_CVBS);
 297         au8522_writereg(state, AU8522_TVDEC_DCAGC_CTRL_REG077H,
 298                         AU8522_TVDEC_DCAGC_CTRL_REG077H_CVBS);
 299         au8522_writereg(state, AU8522_TVDEC_PIC_START_ADJ_REG078H,
 300                         AU8522_TVDEC_PIC_START_ADJ_REG078H_CVBS);
 301         au8522_writereg(state, AU8522_TVDEC_AGC_HIGH_LIMIT_REG079H,
 302                         AU8522_TVDEC_AGC_HIGH_LIMIT_REG079H_CVBS);
 303         au8522_writereg(state, AU8522_TVDEC_MACROVISION_SYNC_THR_REG07AH,
 304                         AU8522_TVDEC_MACROVISION_SYNC_THR_REG07AH_CVBS);
 305         au8522_writereg(state, AU8522_TVDEC_INTRP_CTRL_REG07BH,
 306                         AU8522_TVDEC_INTRP_CTRL_REG07BH_CVBS);
 307         au8522_writereg(state, AU8522_TVDEC_AGC_LOW_LIMIT_REG0E4H,
 308                         AU8522_TVDEC_AGC_LOW_LIMIT_REG0E4H_CVBS);
 309         au8522_writereg(state, AU8522_TOREGAAGC_REG0E5H,
 310                         AU8522_TOREGAAGC_REG0E5H_CVBS);
 311         au8522_writereg(state, AU8522_REG016H, AU8522_REG016H_CVBS);
 312
 313         setup_vbi(state, 0);
 314
 315         if (input_mode == AU8522_INPUT_CONTROL_REG081H_SVIDEO_CH13 ||
 316             input_mode == AU8522_INPUT_CONTROL_REG081H_SVIDEO_CH24) {
 317                 /* Despite what the table says, for the HVR-950q we still need
 318                    to be in CVBS mode for the S-Video input (reason uknown). */
 319                 /* filter_coef_type = 3; */
 320                 filter_coef_type = 5;
 321         } else {
 322                 filter_coef_type = 5;
 323         }
 324
 325         /* Load the Video Decoder Filter Coefficients */
 326         for (i = 0; i < NUM_FILTER_COEF; i++) {
 327                 au8522_writereg(state, filter_coef[i].reg_name,
 328                                 filter_coef[i].reg_val[filter_coef_type]);
 329         }
 330
 331         /* It's not clear what these registers are for, but they are always
 332            set to the same value regardless of what mode we're in */
 333         au8522_writereg(state, AU8522_REG42EH, 0x87);
 334         au8522_writereg(state, AU8522_REG42FH, 0xa2);
 335         au8522_writereg(state, AU8522_REG430H, 0xbf);
 336         au8522_writereg(state, AU8522_REG431H, 0xcb);
 337         au8522_writereg(state, AU8522_REG432H, 0xa1);
 338         au8522_writereg(state, AU8522_REG433H, 0x41);
 339         au8522_writereg(state, AU8522_REG434H, 0x88);
 340         au8522_writereg(state, AU8522_REG435H, 0xc2);
 341         au8522_writereg(state, AU8522_REG436H, 0x3c);
 342 }
 343
 344 static void au8522_setup_cvbs_mode(struct au8522_state *state)
 345 {
 346         /* here we're going to try the pre-programmed route */
 347         au8522_writereg(state, AU8522_MODULE_CLOCK_CONTROL_REG0A3H,
 348                         AU8522_MODULE_CLOCK_CONTROL_REG0A3H_CVBS);
 349
 350         au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x00);
 351         au8522_writereg(state, AU8522_CLAMPING_CONTROL_REG083H, 0x0e);
 352         au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x10);
 353
 354         au8522_writereg(state, AU8522_INPUT_CONTROL_REG081H,
 355                         AU8522_INPUT_CONTROL_REG081H_CVBS_CH1);
 356
 357         setup_decoder_defaults(state, AU8522_INPUT_CONTROL_REG081H_CVBS_CH1);
 358
 359         au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
 360                         AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H_CVBS);
 361 }
 362
 363 static void au8522_setup_cvbs_tuner_mode(struct au8522_state *state)
 364 {
 365         /* here we're going to try the pre-programmed route */
 366         au8522_writereg(state, AU8522_MODULE_CLOCK_CONTROL_REG0A3H,
 367                         AU8522_MODULE_CLOCK_CONTROL_REG0A3H_CVBS);
 368
 369         /* It's not clear why they turn off the PGA before enabling the clamp
 370            control, but the Windows trace does it so we will too... */
 371         au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x00);
 372
 373         /* Enable clamping control */
 374         au8522_writereg(state, AU8522_CLAMPING_CONTROL_REG083H, 0x0e);
 375
 376         /* Turn on the PGA */
 377         au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x10);
 378
 379         /* Set input mode to CVBS on channel 4 with SIF audio input enabled */
 380         au8522_writereg(state, AU8522_INPUT_CONTROL_REG081H,
 381                         AU8522_INPUT_CONTROL_REG081H_CVBS_CH4_SIF);
 382
 383         setup_decoder_defaults(state,
 384                                AU8522_INPUT_CONTROL_REG081H_CVBS_CH4_SIF);
 385
 386         au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
 387                         AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H_CVBS);
 388 }
 389
 390 static void au8522_setup_svideo_mode(struct au8522_state *state)
 391 {
 392         au8522_writereg(state, AU8522_MODULE_CLOCK_CONTROL_REG0A3H,
 393                         AU8522_MODULE_CLOCK_CONTROL_REG0A3H_SVIDEO);
 394
 395         /* Set input to Y on Channe1, C on Channel 3 */
 396         au8522_writereg(state, AU8522_INPUT_CONTROL_REG081H,
 397                         AU8522_INPUT_CONTROL_REG081H_SVIDEO_CH13);
 398
 399         /* Disable clamping control (required for S-video) */
 400         au8522_writereg(state, AU8522_CLAMPING_CONTROL_REG083H, 0x00);
 401
 402         setup_decoder_defaults(state,
 403                                AU8522_INPUT_CONTROL_REG081H_SVIDEO_CH13);
 404
 405         au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
 406                         AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H_CVBS);
 407 }
 408
 409 /* ----------------------------------------------------------------------- */
 410
 411 static void disable_audio_input(struct au8522_state *state)
 412 {
 413         /* This can probably be optimized */
 414         au8522_writereg(state, AU8522_AUDIO_VOLUME_L_REG0F2H, 0x00);
 415         au8522_writereg(state, AU8522_AUDIO_VOLUME_R_REG0F3H, 0x00);
 416         au8522_writereg(state, AU8522_AUDIO_VOLUME_REG0F4H, 0x00);
 417         au8522_writereg(state, AU8522_I2C_CONTROL_REG1_REG091H, 0x80);
 418         au8522_writereg(state, AU8522_I2C_CONTROL_REG0_REG090H, 0x84);
 419
 420         au8522_writereg(state, AU8522_ENA_USB_REG101H, 0x00);
 421         au8522_writereg(state, AU8522_AUDIO_VOLUME_L_REG0F2H, 0x7F);
 422         au8522_writereg(state, AU8522_AUDIO_VOLUME_R_REG0F3H, 0x7F);
 423         au8522_writereg(state, AU8522_REG0F9H, AU8522_REG0F9H_AUDIO);
 424         au8522_writereg(state, AU8522_AUDIO_MODE_REG0F1H, 0x40);
 425
 426         au8522_writereg(state, AU8522_GPIO_DATA_REG0E2H, 0x11);
 427         msleep(5);
 428         au8522_writereg(state, AU8522_GPIO_DATA_REG0E2H, 0x00);
 429
 430         au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_1_REG0A5H, 0x04);
 431         au8522_writereg(state, AU8522_AUDIOFREQ_REG606H, 0x03);
 432         au8522_writereg(state, AU8522_I2S_CTRL_2_REG112H, 0x02);
 433
 434         au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
 435                         AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H_CVBS);
 436 }
 437
 438 /* 0=disable, 1=SIF */
 439 static void set_audio_input(struct au8522_state *state, int aud_input)
 440 {
 441         int i;
 442
 443         /* Note that this function needs to be used in conjunction with setting
 444            the input routing via register 0x81 */
 445
 446         if (aud_input == AU8522_AUDIO_NONE) {
 447                 disable_audio_input(state);
 448                 return;
 449         }
 450
 451         if (aud_input != AU8522_AUDIO_SIF) {
 452                 /* The caller asked for a mode we don't currently support */
 453                 printk(KERN_ERR "Unsupported audio mode requested! mode=%d\n",
 454                        aud_input);
 455                 return;
 456         }
 457
 458         /* Load the Audio Decoder Filter Coefficients */
 459         for (i = 0; i < NUM_LPFILTER_COEF; i++) {
 460                 au8522_writereg(state, lpfilter_coef[i].reg_name,
 461                                 lpfilter_coef[i].reg_val[0]);
 462         }
 463
 464         /* Setup audio */
 465         au8522_writereg(state, AU8522_AUDIO_VOLUME_L_REG0F2H, 0x00);
 466         au8522_writereg(state, AU8522_AUDIO_VOLUME_R_REG0F3H, 0x00);
 467         au8522_writereg(state, AU8522_AUDIO_VOLUME_REG0F4H, 0x00);
 468         au8522_writereg(state, AU8522_I2C_CONTROL_REG1_REG091H, 0x80);
 469         au8522_writereg(state, AU8522_I2C_CONTROL_REG0_REG090H, 0x84);
 470         msleep(150);
 471         au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H, 0x00);
 472         msleep(1);
 473         au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H, 0x9d);
 474         msleep(50);
 475         au8522_writereg(state, AU8522_AUDIO_VOLUME_L_REG0F2H, 0x7F);
 476         au8522_writereg(state, AU8522_AUDIO_VOLUME_R_REG0F3H, 0x7F);
 477         au8522_writereg(state, AU8522_AUDIO_VOLUME_REG0F4H, 0xff);
 478         msleep(80);
 479         au8522_writereg(state, AU8522_AUDIO_VOLUME_L_REG0F2H, 0x7F);
 480         au8522_writereg(state, AU8522_AUDIO_VOLUME_R_REG0F3H, 0x7F);
 481         au8522_writereg(state, AU8522_REG0F9H, AU8522_REG0F9H_AUDIO);
 482         au8522_writereg(state, AU8522_AUDIO_MODE_REG0F1H, 0x82);
 483         msleep(70);
 484         au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_1_REG0A5H, 0x09);
 485         au8522_writereg(state, AU8522_AUDIOFREQ_REG606H, 0x03);
 486         au8522_writereg(state, AU8522_I2S_CTRL_2_REG112H, 0xc2);
 487 }
 488
 489 /* ----------------------------------------------------------------------- */
 490
 491 static int au8522_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 492 {
 493         struct au8522_state *state = to_state(sd);
 494
 495         switch (ctrl->id) {
 496         case V4L2_CID_BRIGHTNESS:
 497                 state->brightness = ctrl->value;
 498                 au8522_writereg(state, AU8522_TVDEC_BRIGHTNESS_REG00AH,
 499                                 ctrl->value - 128);
 500                 break;
 501         case V4L2_CID_CONTRAST:
 502                 state->contrast = ctrl->value;
 503                 au8522_writereg(state, AU8522_TVDEC_CONTRAST_REG00BH,
 504                                 ctrl->value);
 505                 break;
 506         case V4L2_CID_SATURATION:
 507         case V4L2_CID_HUE:
 508         case V4L2_CID_AUDIO_VOLUME:
 509         case V4L2_CID_AUDIO_BASS:
 510         case V4L2_CID_AUDIO_TREBLE:
 511         case V4L2_CID_AUDIO_BALANCE:
 512         case V4L2_CID_AUDIO_MUTE:
 513                 /* Not yet implemented */
 514         default:
 515                 return -EINVAL;
 516         }
 517
 518         return 0;
 519 }
 520
 521 static int au8522_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 522 {
 523         struct au8522_state *state = to_state(sd);
 524
 525         /* Note that we are using values cached in the state structure instead
 526            of reading the registers due to issues with i2c reads not working
 527            properly/consistently yet on the HVR-950q */
 528
 529         switch (ctrl->id) {
 530         case V4L2_CID_BRIGHTNESS:
 531                 ctrl->value = state->brightness;
 532                 break;
 533         case V4L2_CID_CONTRAST:
 534                 ctrl->value = state->contrast;
 535                 break;
 536         case V4L2_CID_SATURATION:
 537         case V4L2_CID_HUE:
 538         case V4L2_CID_AUDIO_VOLUME:
 539         case V4L2_CID_AUDIO_BASS:
 540         case V4L2_CID_AUDIO_TREBLE:
 541         case V4L2_CID_AUDIO_BALANCE:
 542         case V4L2_CID_AUDIO_MUTE:
 543                 /* Not yet supported */
 544         default:
 545                 return -EINVAL;
 546         }
 547
 548         return 0;
 549 }
 550
 551 /* ----------------------------------------------------------------------- */
 552
 553 static int au8522_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
 554 {
 555         switch (fmt->type) {
 556         default:
 557                 return -EINVAL;
 558         }
 559         return 0;
 560 }
 561
 562 static int au8522_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
 563 {
 564         switch (fmt->type) {
 565         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 566                 /* Not yet implemented */
 567                 break;
 568         default:
 569                 return -EINVAL;
 570         }
 571
 572         return 0;
 573 }
 574
 575 /* ----------------------------------------------------------------------- */
 576
 577 #ifdef CONFIG_VIDEO_ADV_DEBUG
 578 static int au8522_g_register(struct v4l2_subdev *sd,
 579                              struct v4l2_dbg_register *reg)
 580 {
 581         struct i2c_client *client = v4l2_get_subdevdata(sd);
 582         struct au8522_state *state = to_state(sd);
 583
 584         if (!v4l2_chip_match_i2c_client(client, &reg->match))
 585                 return -EINVAL;
 586         if (!capable(CAP_SYS_ADMIN))
 587                 return -EPERM;
 588         reg->val = au8522_readreg(state, reg->reg & 0xffff);
 589         return 0;
 590 }
 591
 592 static int au8522_s_register(struct v4l2_subdev *sd,
 593                              struct v4l2_dbg_register *reg)
 594 {
 595         struct i2c_client *client = v4l2_get_subdevdata(sd);
 596         struct au8522_state *state = to_state(sd);
 597
 598         if (!v4l2_chip_match_i2c_client(client, &reg->match))
 599                 return -EINVAL;
 600         if (!capable(CAP_SYS_ADMIN))
 601                 return -EPERM;
 602         au8522_writereg(state, reg->reg, reg->val & 0xff);
 603         return 0;
 604 }
 605 #endif
 606
 607 static int au8522_s_stream(struct v4l2_subdev *sd, int enable)
 608 {
 609         struct au8522_state *state = to_state(sd);
 610
 611         if (enable) {
 612                 au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
 613                                 0x01);
 614                 msleep(1);
 615                 au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
 616                                 AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H_CVBS);
 617         } else {
 618                 /* This does not completely power down the device
 619                    (it only reduces it from around 140ma to 80ma) */
 620                 au8522_writereg(state, AU8522_SYSTEM_MODULE_CONTROL_0_REG0A4H,
 621                                 1 << 5);
 622         }
 623         return 0;
 624 }
 625
 626 static int au8522_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
 627 {
 628         switch (qc->id) {
 629         case V4L2_CID_CONTRAST:
 630                 return v4l2_ctrl_query_fill(qc, 0, 255, 1,
 631                                             AU8522_TVDEC_CONTRAST_REG00BH_CVBS);
 632         case V4L2_CID_BRIGHTNESS:
 633                 return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128);
 634         case V4L2_CID_SATURATION:
 635         case V4L2_CID_HUE:
 636                 /* Not yet implemented */
 637         default:
 638                 break;
 639         }
 640
 641         qc->type = 0;
 642         return -EINVAL;
 643 }
 644
 645 static int au8522_reset(struct v4l2_subdev *sd, u32 val)
 646 {
 647         struct au8522_state *state = to_state(sd);
 648
 649         au8522_writereg(state, 0xa4, 1 << 5);
 650
 651         return 0;
 652 }
 653
 654 static int au8522_s_video_routing(struct v4l2_subdev *sd,
 655                                         u32 input, u32 output, u32 config)
 656 {
 657         struct au8522_state *state = to_state(sd);
 658
 659         au8522_reset(sd, 0);
 660
 661         /* Jam open the i2c gate to the tuner.  We do this here to handle the
 662            case where the user went into digital mode (causing the gate to be
 663            closed), and then came back to analog mode */
 664         au8522_writereg(state, 0x106, 1);
 665
 666         if (input == AU8522_COMPOSITE_CH1) {
 667                 au8522_setup_cvbs_mode(state);
 668         } else if (input == AU8522_SVIDEO_CH13) {
 669                 au8522_setup_svideo_mode(state);
 670         } else if (input == AU8522_COMPOSITE_CH4_SIF) {
 671                 au8522_setup_cvbs_tuner_mode(state);
 672         } else {
 673                 printk(KERN_ERR "au8522 mode not currently supported\n");
 674                 return -EINVAL;
 675         }
 676         return 0;
 677 }
 678
 679 static int au8522_s_audio_routing(struct v4l2_subdev *sd,
 680                                         u32 input, u32 output, u32 config)
 681 {
 682         struct au8522_state *state = to_state(sd);
 683         set_audio_input(state, input);
 684         return 0;
 685 }
 686
 687 static int au8522_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
 688 {
 689         int val = 0;
 690         struct au8522_state *state = to_state(sd);
 691         u8 lock_status;
 692
 693         /* Interrogate the decoder to see if we are getting a real signal */
 694         lock_status = au8522_readreg(state, 0x00);
 695         if (lock_status == 0xa2)
 696                 vt->signal = 0x01;
 697         else
 698                 vt->signal = 0x00;
 699
 700         vt->capability |=
 701                 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 702                 V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 703
 704         val = V4L2_TUNER_SUB_MONO;
 705         vt->rxsubchans = val;
 706         vt->audmode = V4L2_TUNER_MODE_STEREO;
 707         return 0;
 708 }
 709
 710 static int au8522_g_chip_ident(struct v4l2_subdev *sd,
 711                                struct v4l2_dbg_chip_ident *chip)
 712 {
 713         struct au8522_state *state = to_state(sd);
 714         struct i2c_client *client = v4l2_get_subdevdata(sd);
 715
 716         return v4l2_chip_ident_i2c_client(client, chip, state->id, state->rev);
 717 }
 718
 719 static int au8522_log_status(struct v4l2_subdev *sd)
 720 {
 721         /* FIXME: Add some status info here */
 722         return 0;
 723 }
 724
 725 /* ----------------------------------------------------------------------- */
 726
 727 static const struct v4l2_subdev_core_ops au8522_core_ops = {
 728         .log_status = au8522_log_status,
 729         .g_chip_ident = au8522_g_chip_ident,
 730         .g_ctrl = au8522_g_ctrl,
 731         .s_ctrl = au8522_s_ctrl,
 732         .queryctrl = au8522_queryctrl,
 733         .reset = au8522_reset,
 734 #ifdef CONFIG_VIDEO_ADV_DEBUG
 735         .g_register = au8522_g_register,
 736         .s_register = au8522_s_register,
 737 #endif
 738 };
 739
 740 static const struct v4l2_subdev_tuner_ops au8522_tuner_ops = {
 741         .g_tuner = au8522_g_tuner,
 742 };
 743
 744 static const struct v4l2_subdev_audio_ops au8522_audio_ops = {
 745         .s_routing = au8522_s_audio_routing,
 746 };
 747
 748 static const struct v4l2_subdev_video_ops au8522_video_ops = {
 749         .s_routing = au8522_s_video_routing,
 750         .g_fmt = au8522_g_fmt,
 751         .s_fmt = au8522_s_fmt,
 752         .s_stream = au8522_s_stream,
 753 };
 754
 755 static const struct v4l2_subdev_ops au8522_ops = {
 756         .core = &au8522_core_ops,
 757         .tuner = &au8522_tuner_ops,
 758         .audio = &au8522_audio_ops,
 759         .video = &au8522_video_ops,
 760 };
 761
 762 /* ----------------------------------------------------------------------- */
 763
 764 static int au8522_probe(struct i2c_client *client,
 765                         const struct i2c_device_id *did)
 766 {
 767         struct au8522_state *state;
 768         struct v4l2_subdev *sd;
 769         int instance;
 770         struct au8522_config *demod_config;
 771
 772         /* Check if the adapter supports the needed features */
 773         if (!i2c_check_functionality(client->adapter,
 774                                      I2C_FUNC_SMBUS_BYTE_DATA)) {
 775                 return -EIO;
 776         }
 777
 778         /* allocate memory for the internal state */
 779         instance = au8522_get_state(&state, client->adapter, client->addr);
 780         switch (instance) {
 781         case 0:
 782                 printk(KERN_ERR "au8522_decoder allocation failed\n");
 783                 return -EIO;
 784         case 1:
 785                 /* new demod instance */
 786                 printk(KERN_INFO "au8522_decoder creating new instance...\n");
 787                 break;
 788         default:
 789                 /* existing demod instance */
 790                 printk(KERN_INFO "au8522_decoder attach existing instance.\n");
 791                 break;
 792         }
 793
 794         demod_config = kzalloc(sizeof(struct au8522_config), GFP_KERNEL);
 795         if (demod_config == NULL) {
 796                 if (instance == 1)
 797                         kfree(state);
 798                 return -ENOMEM;
 799         }
 800         demod_config->demod_address = 0x8e >> 1;
 801
 802         state->config = demod_config;
 803         state->i2c = client->adapter;
 804
 805         sd = &state->sd;
 806         v4l2_i2c_subdev_init(sd, client, &au8522_ops);
 807
 808         state->c = client;
 809         state->vid_input = AU8522_COMPOSITE_CH1;
 810         state->aud_input = AU8522_AUDIO_NONE;
 811         state->id = 8522;
 812         state->rev = 0;
 813
 814         /* Jam open the i2c gate to the tuner */
 815         au8522_writereg(state, 0x106, 1);
 816
 817         return 0;
 818 }
 819
 820 static int au8522_remove(struct i2c_client *client)
 821 {
 822         struct v4l2_subdev *sd = i2c_get_clientdata(client);
 823         v4l2_device_unregister_subdev(sd);
 824         au8522_release_state(to_state(sd));
 825         return 0;
 826 }
 827
 828 static const struct i2c_device_id au8522_id[] = {
 829         {"au8522", 0},
 830         {}
 831 };
 832
 833 MODULE_DEVICE_TABLE(i2c, au8522_id);
 834
 835 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
 836         .name = "au8522",
 837         .probe = au8522_probe,
 838         .remove = au8522_remove,
 839         .id_table = au8522_id,
 840 };