Hans Verkuil | 1a0adaf | 2007-04-27 12:31:25 -0300 | [diff] [blame] | 1 | /* |
| 2 | gpio functions. |
| 3 | Merging GPIO support into driver: |
| 4 | Copyright (C) 2004 Chris Kennedy <c@groovy.org> |
| 5 | Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl> |
| 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 as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #include "ivtv-driver.h" |
| 23 | #include "ivtv-cards.h" |
| 24 | #include "ivtv-gpio.h" |
| 25 | #include <media/tuner.h> |
| 26 | |
| 27 | /* |
| 28 | * GPIO assignment of Yuan MPG600/MPG160 |
| 29 | * |
| 30 | * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0 |
| 31 | * OUTPUT IN1 IN0 AM3 AM2 AM1 AM0 |
| 32 | * INPUT DM1 DM0 |
| 33 | * |
| 34 | * IN* : Input selection |
| 35 | * IN1 IN0 |
| 36 | * 1 1 N/A |
| 37 | * 1 0 Line |
| 38 | * 0 1 N/A |
| 39 | * 0 0 Tuner |
| 40 | * |
| 41 | * AM* : Audio Mode |
| 42 | * AM3 0: Normal 1: Mixed(Sub+Main channel) |
| 43 | * AM2 0: Subchannel 1: Main channel |
| 44 | * AM1 0: Stereo 1: Mono |
| 45 | * AM0 0: Normal 1: Mute |
| 46 | * |
| 47 | * DM* : Detected tuner audio Mode |
| 48 | * DM1 0: Stereo 1: Mono |
| 49 | * DM0 0: Multiplex 1: Normal |
| 50 | * |
| 51 | * GPIO Initial Settings |
| 52 | * MPG600 MPG160 |
| 53 | * DIR 0x3080 0x7080 |
| 54 | * OUTPUT 0x000C 0x400C |
| 55 | * |
| 56 | * Special thanks to Makoto Iguchi <iguchi@tahoo.org> and Mr. Anonymous |
| 57 | * for analyzing GPIO of MPG160. |
| 58 | * |
| 59 | ***************************************************************************** |
| 60 | * |
| 61 | * GPIO assignment of Avermedia M179 (per information direct from AVerMedia) |
| 62 | * |
| 63 | * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0 |
| 64 | * OUTPUT IN0 AM0 IN1 AM1 AM2 IN2 BR0 BR1 |
| 65 | * INPUT |
| 66 | * |
| 67 | * IN* : Input selection |
| 68 | * IN0 IN1 IN2 |
| 69 | * * 1 * Mute |
| 70 | * 0 0 0 Line-In |
| 71 | * 1 0 0 TV Tuner Audio |
| 72 | * 0 0 1 FM Audio |
| 73 | * 1 0 1 Mute |
| 74 | * |
| 75 | * AM* : Audio Mode |
| 76 | * AM0 AM1 AM2 |
| 77 | * 0 0 0 TV Tuner Audio: L_OUT=(L+R)/2, R_OUT=SAP |
| 78 | * 0 0 1 TV Tuner Audio: L_OUT=R_OUT=SAP (SAP) |
| 79 | * 0 1 0 TV Tuner Audio: L_OUT=L, R_OUT=R (stereo) |
| 80 | * 0 1 1 TV Tuner Audio: mute |
| 81 | * 1 * * TV Tuner Audio: L_OUT=R_OUT=(L+R)/2 (mono) |
| 82 | * |
| 83 | * BR* : Audio Sample Rate (BR stands for bitrate for some reason) |
| 84 | * BR0 BR1 |
| 85 | * 0 0 32 kHz |
| 86 | * 0 1 44.1 kHz |
| 87 | * 1 0 48 kHz |
| 88 | * |
| 89 | * DM* : Detected tuner audio Mode |
| 90 | * Unknown currently |
| 91 | * |
| 92 | * Special thanks to AVerMedia Technologies, Inc. and Jiun-Kuei Jung at |
| 93 | * AVerMedia for providing the GPIO information used to add support |
| 94 | * for the M179 cards. |
| 95 | */ |
| 96 | |
| 97 | /********************* GPIO stuffs *********************/ |
| 98 | |
| 99 | /* GPIO registers */ |
| 100 | #define IVTV_REG_GPIO_IN 0x9008 |
| 101 | #define IVTV_REG_GPIO_OUT 0x900c |
| 102 | #define IVTV_REG_GPIO_DIR 0x9020 |
| 103 | |
| 104 | void ivtv_reset_ir_gpio(struct ivtv *itv) |
| 105 | { |
| 106 | int curdir, curout; |
| 107 | |
| 108 | if (itv->card->type != IVTV_CARD_PVR_150) |
| 109 | return; |
| 110 | IVTV_DEBUG_INFO("Resetting PVR150 IR\n"); |
| 111 | curout = read_reg(IVTV_REG_GPIO_OUT); |
| 112 | curdir = read_reg(IVTV_REG_GPIO_DIR); |
| 113 | curdir |= 0x80; |
| 114 | write_reg(curdir, IVTV_REG_GPIO_DIR); |
| 115 | curout = (curout & ~0xF) | 1; |
| 116 | write_reg(curout, IVTV_REG_GPIO_OUT); |
| 117 | /* We could use something else for smaller time */ |
Robert P. J. Day | 97989ad | 2007-07-16 10:47:51 -0300 | [diff] [blame] | 118 | schedule_timeout_interruptible(msecs_to_jiffies(1)); |
Hans Verkuil | 1a0adaf | 2007-04-27 12:31:25 -0300 | [diff] [blame] | 119 | curout |= 2; |
| 120 | write_reg(curout, IVTV_REG_GPIO_OUT); |
| 121 | curdir &= ~0x80; |
| 122 | write_reg(curdir, IVTV_REG_GPIO_DIR); |
| 123 | } |
| 124 | |
Hans Verkuil | 1a0adaf | 2007-04-27 12:31:25 -0300 | [diff] [blame] | 125 | |
| 126 | void ivtv_gpio_init(struct ivtv *itv) |
| 127 | { |
| 128 | if (itv->card->gpio_init.direction == 0) |
| 129 | return; |
| 130 | |
| 131 | IVTV_DEBUG_INFO("GPIO initial dir: %08x out: %08x\n", |
| 132 | read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT)); |
| 133 | |
| 134 | /* init output data then direction */ |
| 135 | write_reg(itv->card->gpio_init.initial_value, IVTV_REG_GPIO_OUT); |
| 136 | write_reg(itv->card->gpio_init.direction, IVTV_REG_GPIO_DIR); |
| 137 | } |
| 138 | |
| 139 | static struct v4l2_queryctrl gpio_ctrl_mute = { |
| 140 | .id = V4L2_CID_AUDIO_MUTE, |
| 141 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 142 | .name = "Mute", |
| 143 | .minimum = 0, |
| 144 | .maximum = 1, |
| 145 | .step = 1, |
| 146 | .default_value = 1, |
| 147 | .flags = 0, |
| 148 | }; |
| 149 | |
| 150 | int ivtv_gpio(struct ivtv *itv, unsigned int command, void *arg) |
| 151 | { |
| 152 | struct v4l2_tuner *tuner = arg; |
| 153 | struct v4l2_control *ctrl = arg; |
| 154 | struct v4l2_routing *route = arg; |
| 155 | u16 mask, data; |
| 156 | |
| 157 | switch (command) { |
| 158 | case VIDIOC_INT_AUDIO_CLOCK_FREQ: |
| 159 | mask = itv->card->gpio_audio_freq.mask; |
| 160 | switch (*(u32 *)arg) { |
| 161 | case 32000: |
| 162 | data = itv->card->gpio_audio_freq.f32000; |
| 163 | break; |
| 164 | case 44100: |
| 165 | data = itv->card->gpio_audio_freq.f44100; |
| 166 | break; |
| 167 | case 48000: |
| 168 | default: |
| 169 | data = itv->card->gpio_audio_freq.f48000; |
| 170 | break; |
| 171 | } |
| 172 | break; |
| 173 | |
| 174 | case VIDIOC_G_TUNER: |
| 175 | mask = itv->card->gpio_audio_detect.mask; |
| 176 | if (mask == 0 || (read_reg(IVTV_REG_GPIO_IN) & mask)) |
| 177 | tuner->rxsubchans = V4L2_TUNER_MODE_STEREO | |
| 178 | V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; |
| 179 | else |
| 180 | tuner->rxsubchans = V4L2_TUNER_SUB_MONO; |
| 181 | return 0; |
| 182 | |
| 183 | case VIDIOC_S_TUNER: |
| 184 | mask = itv->card->gpio_audio_mode.mask; |
| 185 | switch (tuner->audmode) { |
| 186 | case V4L2_TUNER_MODE_LANG1: |
| 187 | data = itv->card->gpio_audio_mode.lang1; |
| 188 | break; |
| 189 | case V4L2_TUNER_MODE_LANG2: |
| 190 | data = itv->card->gpio_audio_mode.lang2; |
| 191 | break; |
| 192 | case V4L2_TUNER_MODE_MONO: |
| 193 | data = itv->card->gpio_audio_mode.mono; |
| 194 | break; |
| 195 | case V4L2_TUNER_MODE_STEREO: |
| 196 | case V4L2_TUNER_MODE_LANG1_LANG2: |
| 197 | default: |
| 198 | data = itv->card->gpio_audio_mode.stereo; |
| 199 | break; |
| 200 | } |
| 201 | break; |
| 202 | |
| 203 | case AUDC_SET_RADIO: |
| 204 | mask = itv->card->gpio_audio_input.mask; |
| 205 | data = itv->card->gpio_audio_input.radio; |
| 206 | break; |
| 207 | |
| 208 | case VIDIOC_S_STD: |
| 209 | mask = itv->card->gpio_audio_input.mask; |
| 210 | data = itv->card->gpio_audio_input.tuner; |
| 211 | break; |
| 212 | |
| 213 | case VIDIOC_INT_S_AUDIO_ROUTING: |
| 214 | if (route->input > 2) |
| 215 | return -EINVAL; |
| 216 | mask = itv->card->gpio_audio_input.mask; |
| 217 | switch (route->input) { |
| 218 | case 0: |
| 219 | data = itv->card->gpio_audio_input.tuner; |
| 220 | break; |
| 221 | case 1: |
| 222 | data = itv->card->gpio_audio_input.linein; |
| 223 | break; |
| 224 | case 2: |
| 225 | default: |
| 226 | data = itv->card->gpio_audio_input.radio; |
| 227 | break; |
| 228 | } |
| 229 | break; |
| 230 | |
| 231 | case VIDIOC_G_CTRL: |
| 232 | if (ctrl->id != V4L2_CID_AUDIO_MUTE) |
| 233 | return -EINVAL; |
| 234 | mask = itv->card->gpio_audio_mute.mask; |
| 235 | data = itv->card->gpio_audio_mute.mute; |
| 236 | ctrl->value = (read_reg(IVTV_REG_GPIO_OUT) & mask) == data; |
| 237 | return 0; |
| 238 | |
| 239 | case VIDIOC_S_CTRL: |
| 240 | if (ctrl->id != V4L2_CID_AUDIO_MUTE) |
| 241 | return -EINVAL; |
| 242 | mask = itv->card->gpio_audio_mute.mask; |
| 243 | data = ctrl->value ? itv->card->gpio_audio_mute.mute : 0; |
| 244 | break; |
| 245 | |
| 246 | case VIDIOC_QUERYCTRL: |
| 247 | { |
| 248 | struct v4l2_queryctrl *qc = arg; |
| 249 | |
| 250 | if (qc->id != V4L2_CID_AUDIO_MUTE) |
| 251 | return -EINVAL; |
| 252 | *qc = gpio_ctrl_mute; |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | case VIDIOC_LOG_STATUS: |
| 257 | IVTV_INFO("GPIO status: DIR=0x%04x OUT=0x%04x IN=0x%04x\n", |
| 258 | read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT), |
| 259 | read_reg(IVTV_REG_GPIO_IN)); |
| 260 | return 0; |
| 261 | |
| 262 | case VIDIOC_INT_S_VIDEO_ROUTING: |
| 263 | if (route->input > 2) /* 0:Tuner 1:Composite 2:S-Video */ |
| 264 | return -EINVAL; |
| 265 | mask = itv->card->gpio_video_input.mask; |
| 266 | if (route->input == 0) |
| 267 | data = itv->card->gpio_video_input.tuner; |
| 268 | else if (route->input == 1) |
| 269 | data = itv->card->gpio_video_input.composite; |
| 270 | else |
| 271 | data = itv->card->gpio_video_input.svideo; |
| 272 | break; |
| 273 | |
| 274 | default: |
| 275 | return -EINVAL; |
| 276 | } |
| 277 | if (mask) |
| 278 | write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT); |
| 279 | return 0; |
| 280 | } |