Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 2 | /* |
| 3 | * tw9910 Video Driver |
| 4 | * |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 5 | * Copyright (C) 2017 Jacopo Mondi <jacopo+renesas@jmondi.org> |
| 6 | * |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 7 | * Copyright (C) 2008 Renesas Solutions Corp. |
| 8 | * Kuninori Morimoto <morimoto.kuninori@renesas.com> |
| 9 | * |
| 10 | * Based on ov772x driver, |
| 11 | * |
| 12 | * Copyright (C) 2008 Kuninori Morimoto <morimoto.kuninori@renesas.com> |
| 13 | * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net> |
| 14 | * Copyright (C) 2008 Magnus Damm |
| 15 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 16 | */ |
| 17 | |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 18 | #include <linux/clk.h> |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 19 | #include <linux/delay.h> |
Jacopo Mondi | 7470230 | 2018-03-02 09:46:36 -0500 | [diff] [blame] | 20 | #include <linux/gpio/consumer.h> |
| 21 | #include <linux/i2c.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/slab.h> |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 26 | #include <linux/v4l2-mediabus.h> |
| 27 | #include <linux/videodev2.h> |
| 28 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 29 | #include <media/i2c/tw9910.h> |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 30 | #include <media/v4l2-subdev.h> |
| 31 | |
| 32 | #define GET_ID(val) ((val & 0xF8) >> 3) |
| 33 | #define GET_REV(val) (val & 0x07) |
| 34 | |
| 35 | /* |
| 36 | * register offset |
| 37 | */ |
| 38 | #define ID 0x00 /* Product ID Code Register */ |
| 39 | #define STATUS1 0x01 /* Chip Status Register I */ |
| 40 | #define INFORM 0x02 /* Input Format */ |
| 41 | #define OPFORM 0x03 /* Output Format Control Register */ |
| 42 | #define DLYCTR 0x04 /* Hysteresis and HSYNC Delay Control */ |
| 43 | #define OUTCTR1 0x05 /* Output Control I */ |
| 44 | #define ACNTL1 0x06 /* Analog Control Register 1 */ |
| 45 | #define CROP_HI 0x07 /* Cropping Register, High */ |
| 46 | #define VDELAY_LO 0x08 /* Vertical Delay Register, Low */ |
| 47 | #define VACTIVE_LO 0x09 /* Vertical Active Register, Low */ |
| 48 | #define HDELAY_LO 0x0A /* Horizontal Delay Register, Low */ |
| 49 | #define HACTIVE_LO 0x0B /* Horizontal Active Register, Low */ |
| 50 | #define CNTRL1 0x0C /* Control Register I */ |
| 51 | #define VSCALE_LO 0x0D /* Vertical Scaling Register, Low */ |
| 52 | #define SCALE_HI 0x0E /* Scaling Register, High */ |
| 53 | #define HSCALE_LO 0x0F /* Horizontal Scaling Register, Low */ |
| 54 | #define BRIGHT 0x10 /* BRIGHTNESS Control Register */ |
| 55 | #define CONTRAST 0x11 /* CONTRAST Control Register */ |
| 56 | #define SHARPNESS 0x12 /* SHARPNESS Control Register I */ |
| 57 | #define SAT_U 0x13 /* Chroma (U) Gain Register */ |
| 58 | #define SAT_V 0x14 /* Chroma (V) Gain Register */ |
| 59 | #define HUE 0x15 /* Hue Control Register */ |
| 60 | #define CORING1 0x17 |
| 61 | #define CORING2 0x18 /* Coring and IF compensation */ |
| 62 | #define VBICNTL 0x19 /* VBI Control Register */ |
| 63 | #define ACNTL2 0x1A /* Analog Control 2 */ |
| 64 | #define OUTCTR2 0x1B /* Output Control 2 */ |
| 65 | #define SDT 0x1C /* Standard Selection */ |
| 66 | #define SDTR 0x1D /* Standard Recognition */ |
| 67 | #define TEST 0x1F /* Test Control Register */ |
| 68 | #define CLMPG 0x20 /* Clamping Gain */ |
| 69 | #define IAGC 0x21 /* Individual AGC Gain */ |
| 70 | #define AGCGAIN 0x22 /* AGC Gain */ |
| 71 | #define PEAKWT 0x23 /* White Peak Threshold */ |
| 72 | #define CLMPL 0x24 /* Clamp level */ |
| 73 | #define SYNCT 0x25 /* Sync Amplitude */ |
| 74 | #define MISSCNT 0x26 /* Sync Miss Count Register */ |
| 75 | #define PCLAMP 0x27 /* Clamp Position Register */ |
| 76 | #define VCNTL1 0x28 /* Vertical Control I */ |
| 77 | #define VCNTL2 0x29 /* Vertical Control II */ |
| 78 | #define CKILL 0x2A /* Color Killer Level Control */ |
| 79 | #define COMB 0x2B /* Comb Filter Control */ |
| 80 | #define LDLY 0x2C /* Luma Delay and H Filter Control */ |
| 81 | #define MISC1 0x2D /* Miscellaneous Control I */ |
| 82 | #define LOOP 0x2E /* LOOP Control Register */ |
| 83 | #define MISC2 0x2F /* Miscellaneous Control II */ |
| 84 | #define MVSN 0x30 /* Macrovision Detection */ |
| 85 | #define STATUS2 0x31 /* Chip STATUS II */ |
| 86 | #define HFREF 0x32 /* H monitor */ |
| 87 | #define CLMD 0x33 /* CLAMP MODE */ |
| 88 | #define IDCNTL 0x34 /* ID Detection Control */ |
| 89 | #define CLCNTL1 0x35 /* Clamp Control I */ |
| 90 | #define ANAPLLCTL 0x4C |
| 91 | #define VBIMIN 0x4D |
| 92 | #define HSLOWCTL 0x4E |
| 93 | #define WSS3 0x4F |
| 94 | #define FILLDATA 0x50 |
| 95 | #define SDID 0x51 |
| 96 | #define DID 0x52 |
| 97 | #define WSS1 0x53 |
| 98 | #define WSS2 0x54 |
| 99 | #define VVBI 0x55 |
| 100 | #define LCTL6 0x56 |
| 101 | #define LCTL7 0x57 |
| 102 | #define LCTL8 0x58 |
| 103 | #define LCTL9 0x59 |
| 104 | #define LCTL10 0x5A |
| 105 | #define LCTL11 0x5B |
| 106 | #define LCTL12 0x5C |
| 107 | #define LCTL13 0x5D |
| 108 | #define LCTL14 0x5E |
| 109 | #define LCTL15 0x5F |
| 110 | #define LCTL16 0x60 |
| 111 | #define LCTL17 0x61 |
| 112 | #define LCTL18 0x62 |
| 113 | #define LCTL19 0x63 |
| 114 | #define LCTL20 0x64 |
| 115 | #define LCTL21 0x65 |
| 116 | #define LCTL22 0x66 |
| 117 | #define LCTL23 0x67 |
| 118 | #define LCTL24 0x68 |
| 119 | #define LCTL25 0x69 |
| 120 | #define LCTL26 0x6A |
| 121 | #define HSBEGIN 0x6B |
| 122 | #define HSEND 0x6C |
| 123 | #define OVSDLY 0x6D |
| 124 | #define OVSEND 0x6E |
| 125 | #define VBIDELAY 0x6F |
| 126 | |
| 127 | /* |
| 128 | * register detail |
| 129 | */ |
| 130 | |
| 131 | /* INFORM */ |
| 132 | #define FC27_ON 0x40 /* 1 : Input crystal clock frequency is 27MHz */ |
| 133 | #define FC27_FF 0x00 /* 0 : Square pixel mode. */ |
| 134 | /* Must use 24.54MHz for 60Hz field rate */ |
| 135 | /* source or 29.5MHz for 50Hz field rate */ |
| 136 | #define IFSEL_S 0x10 /* 01 : S-video decoding */ |
| 137 | #define IFSEL_C 0x00 /* 00 : Composite video decoding */ |
| 138 | /* Y input video selection */ |
| 139 | #define YSEL_M0 0x00 /* 00 : Mux0 selected */ |
| 140 | #define YSEL_M1 0x04 /* 01 : Mux1 selected */ |
| 141 | #define YSEL_M2 0x08 /* 10 : Mux2 selected */ |
| 142 | #define YSEL_M3 0x10 /* 11 : Mux3 selected */ |
| 143 | |
| 144 | /* OPFORM */ |
| 145 | #define MODE 0x80 /* 0 : CCIR601 compatible YCrCb 4:2:2 format */ |
| 146 | /* 1 : ITU-R-656 compatible data sequence format */ |
| 147 | #define LEN 0x40 /* 0 : 8-bit YCrCb 4:2:2 output format */ |
| 148 | /* 1 : 16-bit YCrCb 4:2:2 output format.*/ |
| 149 | #define LLCMODE 0x20 /* 1 : LLC output mode. */ |
| 150 | /* 0 : free-run output mode */ |
| 151 | #define AINC 0x10 /* Serial interface auto-indexing control */ |
| 152 | /* 0 : auto-increment */ |
| 153 | /* 1 : non-auto */ |
| 154 | #define VSCTL 0x08 /* 1 : Vertical out ctrl by DVALID */ |
| 155 | /* 0 : Vertical out ctrl by HACTIVE and DVALID */ |
| 156 | #define OEN_TRI_SEL_MASK 0x07 |
| 157 | #define OEN_TRI_SEL_ALL_ON 0x00 /* Enable output for Rev0/Rev1 */ |
| 158 | #define OEN_TRI_SEL_ALL_OFF_r0 0x06 /* All tri-stated for Rev0 */ |
| 159 | #define OEN_TRI_SEL_ALL_OFF_r1 0x07 /* All tri-stated for Rev1 */ |
| 160 | |
| 161 | /* OUTCTR1 */ |
| 162 | #define VSP_LO 0x00 /* 0 : VS pin output polarity is active low */ |
| 163 | #define VSP_HI 0x80 /* 1 : VS pin output polarity is active high. */ |
| 164 | /* VS pin output control */ |
| 165 | #define VSSL_VSYNC 0x00 /* 0 : VSYNC */ |
| 166 | #define VSSL_VACT 0x10 /* 1 : VACT */ |
| 167 | #define VSSL_FIELD 0x20 /* 2 : FIELD */ |
| 168 | #define VSSL_VVALID 0x30 /* 3 : VVALID */ |
| 169 | #define VSSL_ZERO 0x70 /* 7 : 0 */ |
| 170 | #define HSP_LOW 0x00 /* 0 : HS pin output polarity is active low */ |
| 171 | #define HSP_HI 0x08 /* 1 : HS pin output polarity is active high.*/ |
| 172 | /* HS pin output control */ |
| 173 | #define HSSL_HACT 0x00 /* 0 : HACT */ |
| 174 | #define HSSL_HSYNC 0x01 /* 1 : HSYNC */ |
| 175 | #define HSSL_DVALID 0x02 /* 2 : DVALID */ |
| 176 | #define HSSL_HLOCK 0x03 /* 3 : HLOCK */ |
| 177 | #define HSSL_ASYNCW 0x04 /* 4 : ASYNCW */ |
| 178 | #define HSSL_ZERO 0x07 /* 7 : 0 */ |
| 179 | |
| 180 | /* ACNTL1 */ |
| 181 | #define SRESET 0x80 /* resets the device to its default state |
| 182 | * but all register content remain unchanged. |
| 183 | * This bit is self-resetting. |
| 184 | */ |
| 185 | #define ACNTL1_PDN_MASK 0x0e |
| 186 | #define CLK_PDN 0x08 /* system clock power down */ |
| 187 | #define Y_PDN 0x04 /* Luma ADC power down */ |
| 188 | #define C_PDN 0x02 /* Chroma ADC power down */ |
| 189 | |
| 190 | /* ACNTL2 */ |
| 191 | #define ACNTL2_PDN_MASK 0x40 |
| 192 | #define PLL_PDN 0x40 /* PLL power down */ |
| 193 | |
| 194 | /* VBICNTL */ |
| 195 | |
| 196 | /* RTSEL : control the real time signal output from the MPOUT pin */ |
| 197 | #define RTSEL_MASK 0x07 |
| 198 | #define RTSEL_VLOSS 0x00 /* 0000 = Video loss */ |
| 199 | #define RTSEL_HLOCK 0x01 /* 0001 = H-lock */ |
| 200 | #define RTSEL_SLOCK 0x02 /* 0010 = S-lock */ |
| 201 | #define RTSEL_VLOCK 0x03 /* 0011 = V-lock */ |
| 202 | #define RTSEL_MONO 0x04 /* 0100 = MONO */ |
| 203 | #define RTSEL_DET50 0x05 /* 0101 = DET50 */ |
| 204 | #define RTSEL_FIELD 0x06 /* 0110 = FIELD */ |
| 205 | #define RTSEL_RTCO 0x07 /* 0111 = RTCO ( Real Time Control ) */ |
| 206 | |
| 207 | /* HSYNC start and end are constant for now */ |
| 208 | #define HSYNC_START 0x0260 |
| 209 | #define HSYNC_END 0x0300 |
| 210 | |
| 211 | /* |
| 212 | * structure |
| 213 | */ |
| 214 | |
| 215 | struct regval_list { |
| 216 | unsigned char reg_num; |
| 217 | unsigned char value; |
| 218 | }; |
| 219 | |
| 220 | struct tw9910_scale_ctrl { |
| 221 | char *name; |
| 222 | unsigned short width; |
| 223 | unsigned short height; |
| 224 | u16 hscale; |
| 225 | u16 vscale; |
| 226 | }; |
| 227 | |
| 228 | struct tw9910_priv { |
| 229 | struct v4l2_subdev subdev; |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 230 | struct clk *clk; |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 231 | struct tw9910_video_info *info; |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 232 | struct gpio_desc *pdn_gpio; |
| 233 | struct gpio_desc *rstb_gpio; |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 234 | const struct tw9910_scale_ctrl *scale; |
| 235 | v4l2_std_id norm; |
| 236 | u32 revision; |
| 237 | }; |
| 238 | |
| 239 | static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = { |
| 240 | { |
| 241 | .name = "NTSC SQ", |
| 242 | .width = 640, |
| 243 | .height = 480, |
| 244 | .hscale = 0x0100, |
| 245 | .vscale = 0x0100, |
| 246 | }, |
| 247 | { |
| 248 | .name = "NTSC CCIR601", |
| 249 | .width = 720, |
| 250 | .height = 480, |
| 251 | .hscale = 0x0100, |
| 252 | .vscale = 0x0100, |
| 253 | }, |
| 254 | { |
| 255 | .name = "NTSC SQ (CIF)", |
| 256 | .width = 320, |
| 257 | .height = 240, |
| 258 | .hscale = 0x0200, |
| 259 | .vscale = 0x0200, |
| 260 | }, |
| 261 | { |
| 262 | .name = "NTSC CCIR601 (CIF)", |
| 263 | .width = 360, |
| 264 | .height = 240, |
| 265 | .hscale = 0x0200, |
| 266 | .vscale = 0x0200, |
| 267 | }, |
| 268 | { |
| 269 | .name = "NTSC SQ (QCIF)", |
| 270 | .width = 160, |
| 271 | .height = 120, |
| 272 | .hscale = 0x0400, |
| 273 | .vscale = 0x0400, |
| 274 | }, |
| 275 | { |
| 276 | .name = "NTSC CCIR601 (QCIF)", |
| 277 | .width = 180, |
| 278 | .height = 120, |
| 279 | .hscale = 0x0400, |
| 280 | .vscale = 0x0400, |
| 281 | }, |
| 282 | }; |
| 283 | |
| 284 | static const struct tw9910_scale_ctrl tw9910_pal_scales[] = { |
| 285 | { |
| 286 | .name = "PAL SQ", |
| 287 | .width = 768, |
| 288 | .height = 576, |
| 289 | .hscale = 0x0100, |
| 290 | .vscale = 0x0100, |
| 291 | }, |
| 292 | { |
| 293 | .name = "PAL CCIR601", |
| 294 | .width = 720, |
| 295 | .height = 576, |
| 296 | .hscale = 0x0100, |
| 297 | .vscale = 0x0100, |
| 298 | }, |
| 299 | { |
| 300 | .name = "PAL SQ (CIF)", |
| 301 | .width = 384, |
| 302 | .height = 288, |
| 303 | .hscale = 0x0200, |
| 304 | .vscale = 0x0200, |
| 305 | }, |
| 306 | { |
| 307 | .name = "PAL CCIR601 (CIF)", |
| 308 | .width = 360, |
| 309 | .height = 288, |
| 310 | .hscale = 0x0200, |
| 311 | .vscale = 0x0200, |
| 312 | }, |
| 313 | { |
| 314 | .name = "PAL SQ (QCIF)", |
| 315 | .width = 192, |
| 316 | .height = 144, |
| 317 | .hscale = 0x0400, |
| 318 | .vscale = 0x0400, |
| 319 | }, |
| 320 | { |
| 321 | .name = "PAL CCIR601 (QCIF)", |
| 322 | .width = 180, |
| 323 | .height = 144, |
| 324 | .hscale = 0x0400, |
| 325 | .vscale = 0x0400, |
| 326 | }, |
| 327 | }; |
| 328 | |
| 329 | /* |
| 330 | * general function |
| 331 | */ |
| 332 | static struct tw9910_priv *to_tw9910(const struct i2c_client *client) |
| 333 | { |
| 334 | return container_of(i2c_get_clientdata(client), struct tw9910_priv, |
| 335 | subdev); |
| 336 | } |
| 337 | |
| 338 | static int tw9910_mask_set(struct i2c_client *client, u8 command, |
| 339 | u8 mask, u8 set) |
| 340 | { |
| 341 | s32 val = i2c_smbus_read_byte_data(client, command); |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 342 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 343 | if (val < 0) |
| 344 | return val; |
| 345 | |
| 346 | val &= ~mask; |
| 347 | val |= set & mask; |
| 348 | |
| 349 | return i2c_smbus_write_byte_data(client, command, val); |
| 350 | } |
| 351 | |
| 352 | static int tw9910_set_scale(struct i2c_client *client, |
| 353 | const struct tw9910_scale_ctrl *scale) |
| 354 | { |
| 355 | int ret; |
| 356 | |
| 357 | ret = i2c_smbus_write_byte_data(client, SCALE_HI, |
| 358 | (scale->vscale & 0x0F00) >> 4 | |
| 359 | (scale->hscale & 0x0F00) >> 8); |
| 360 | if (ret < 0) |
| 361 | return ret; |
| 362 | |
| 363 | ret = i2c_smbus_write_byte_data(client, HSCALE_LO, |
| 364 | scale->hscale & 0x00FF); |
| 365 | if (ret < 0) |
| 366 | return ret; |
| 367 | |
| 368 | ret = i2c_smbus_write_byte_data(client, VSCALE_LO, |
| 369 | scale->vscale & 0x00FF); |
| 370 | |
| 371 | return ret; |
| 372 | } |
| 373 | |
| 374 | static int tw9910_set_hsync(struct i2c_client *client) |
| 375 | { |
| 376 | struct tw9910_priv *priv = to_tw9910(client); |
| 377 | int ret; |
| 378 | |
| 379 | /* bit 10 - 3 */ |
| 380 | ret = i2c_smbus_write_byte_data(client, HSBEGIN, |
| 381 | (HSYNC_START & 0x07F8) >> 3); |
| 382 | if (ret < 0) |
| 383 | return ret; |
| 384 | |
| 385 | /* bit 10 - 3 */ |
| 386 | ret = i2c_smbus_write_byte_data(client, HSEND, |
| 387 | (HSYNC_END & 0x07F8) >> 3); |
| 388 | if (ret < 0) |
| 389 | return ret; |
| 390 | |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 391 | /* So far only revisions 0 and 1 have been seen. */ |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 392 | /* bit 2 - 0 */ |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 393 | if (priv->revision == 1) |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 394 | ret = tw9910_mask_set(client, HSLOWCTL, 0x77, |
| 395 | (HSYNC_START & 0x0007) << 4 | |
| 396 | (HSYNC_END & 0x0007)); |
| 397 | |
| 398 | return ret; |
| 399 | } |
| 400 | |
| 401 | static void tw9910_reset(struct i2c_client *client) |
| 402 | { |
| 403 | tw9910_mask_set(client, ACNTL1, SRESET, SRESET); |
Jacopo Mondi | 7bd8c4f | 2018-03-02 09:46:37 -0500 | [diff] [blame] | 404 | usleep_range(1000, 5000); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 405 | } |
| 406 | |
| 407 | static int tw9910_power(struct i2c_client *client, int enable) |
| 408 | { |
| 409 | int ret; |
| 410 | u8 acntl1; |
| 411 | u8 acntl2; |
| 412 | |
| 413 | if (enable) { |
| 414 | acntl1 = 0; |
| 415 | acntl2 = 0; |
| 416 | } else { |
| 417 | acntl1 = CLK_PDN | Y_PDN | C_PDN; |
| 418 | acntl2 = PLL_PDN; |
| 419 | } |
| 420 | |
| 421 | ret = tw9910_mask_set(client, ACNTL1, ACNTL1_PDN_MASK, acntl1); |
| 422 | if (ret < 0) |
| 423 | return ret; |
| 424 | |
| 425 | return tw9910_mask_set(client, ACNTL2, ACNTL2_PDN_MASK, acntl2); |
| 426 | } |
| 427 | |
| 428 | static const struct tw9910_scale_ctrl *tw9910_select_norm(v4l2_std_id norm, |
| 429 | u32 width, u32 height) |
| 430 | { |
| 431 | const struct tw9910_scale_ctrl *scale; |
| 432 | const struct tw9910_scale_ctrl *ret = NULL; |
| 433 | __u32 diff = 0xffffffff, tmp; |
| 434 | int size, i; |
| 435 | |
| 436 | if (norm & V4L2_STD_NTSC) { |
| 437 | scale = tw9910_ntsc_scales; |
| 438 | size = ARRAY_SIZE(tw9910_ntsc_scales); |
| 439 | } else if (norm & V4L2_STD_PAL) { |
| 440 | scale = tw9910_pal_scales; |
| 441 | size = ARRAY_SIZE(tw9910_pal_scales); |
| 442 | } else { |
| 443 | return NULL; |
| 444 | } |
| 445 | |
| 446 | for (i = 0; i < size; i++) { |
| 447 | tmp = abs(width - scale[i].width) + |
Joe Perches | d6fdad5 | 2018-03-01 06:50:22 -0500 | [diff] [blame] | 448 | abs(height - scale[i].height); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 449 | if (tmp < diff) { |
| 450 | diff = tmp; |
| 451 | ret = scale + i; |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | return ret; |
| 456 | } |
| 457 | |
| 458 | /* |
| 459 | * subdevice operations |
| 460 | */ |
| 461 | static int tw9910_s_stream(struct v4l2_subdev *sd, int enable) |
| 462 | { |
| 463 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 464 | struct tw9910_priv *priv = to_tw9910(client); |
| 465 | u8 val; |
| 466 | int ret; |
| 467 | |
| 468 | if (!enable) { |
| 469 | switch (priv->revision) { |
| 470 | case 0: |
| 471 | val = OEN_TRI_SEL_ALL_OFF_r0; |
| 472 | break; |
| 473 | case 1: |
| 474 | val = OEN_TRI_SEL_ALL_OFF_r1; |
| 475 | break; |
| 476 | default: |
| 477 | dev_err(&client->dev, "un-supported revision\n"); |
| 478 | return -EINVAL; |
| 479 | } |
| 480 | } else { |
| 481 | val = OEN_TRI_SEL_ALL_ON; |
| 482 | |
| 483 | if (!priv->scale) { |
| 484 | dev_err(&client->dev, "norm select error\n"); |
| 485 | return -EPERM; |
| 486 | } |
| 487 | |
| 488 | dev_dbg(&client->dev, "%s %dx%d\n", |
| 489 | priv->scale->name, |
| 490 | priv->scale->width, |
| 491 | priv->scale->height); |
| 492 | } |
| 493 | |
| 494 | ret = tw9910_mask_set(client, OPFORM, OEN_TRI_SEL_MASK, val); |
| 495 | if (ret < 0) |
| 496 | return ret; |
| 497 | |
| 498 | return tw9910_power(client, enable); |
| 499 | } |
| 500 | |
| 501 | static int tw9910_g_std(struct v4l2_subdev *sd, v4l2_std_id *norm) |
| 502 | { |
| 503 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 504 | struct tw9910_priv *priv = to_tw9910(client); |
| 505 | |
| 506 | *norm = priv->norm; |
| 507 | |
| 508 | return 0; |
| 509 | } |
| 510 | |
| 511 | static int tw9910_s_std(struct v4l2_subdev *sd, v4l2_std_id norm) |
| 512 | { |
| 513 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 514 | struct tw9910_priv *priv = to_tw9910(client); |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 515 | const unsigned int hact = 720; |
| 516 | const unsigned int hdelay = 15; |
| 517 | unsigned int vact; |
| 518 | unsigned int vdelay; |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 519 | int ret; |
| 520 | |
| 521 | if (!(norm & (V4L2_STD_NTSC | V4L2_STD_PAL))) |
| 522 | return -EINVAL; |
| 523 | |
| 524 | priv->norm = norm; |
| 525 | if (norm & V4L2_STD_525_60) { |
| 526 | vact = 240; |
| 527 | vdelay = 18; |
| 528 | ret = tw9910_mask_set(client, VVBI, 0x10, 0x10); |
| 529 | } else { |
| 530 | vact = 288; |
| 531 | vdelay = 24; |
| 532 | ret = tw9910_mask_set(client, VVBI, 0x10, 0x00); |
| 533 | } |
| 534 | if (!ret) |
| 535 | ret = i2c_smbus_write_byte_data(client, CROP_HI, |
Jacopo Mondi | 5d1787e | 2018-03-02 09:46:35 -0500 | [diff] [blame] | 536 | ((vdelay >> 2) & 0xc0) | |
| 537 | ((vact >> 4) & 0x30) | |
| 538 | ((hdelay >> 6) & 0x0c) | |
Joe Perches | d6fdad5 | 2018-03-01 06:50:22 -0500 | [diff] [blame] | 539 | ((hact >> 8) & 0x03)); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 540 | if (!ret) |
| 541 | ret = i2c_smbus_write_byte_data(client, VDELAY_LO, |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 542 | vdelay & 0xff); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 543 | if (!ret) |
| 544 | ret = i2c_smbus_write_byte_data(client, VACTIVE_LO, |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 545 | vact & 0xff); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 546 | |
| 547 | return ret; |
| 548 | } |
| 549 | |
| 550 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 551 | static int tw9910_g_register(struct v4l2_subdev *sd, |
| 552 | struct v4l2_dbg_register *reg) |
| 553 | { |
| 554 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 555 | int ret; |
| 556 | |
| 557 | if (reg->reg > 0xff) |
| 558 | return -EINVAL; |
| 559 | |
| 560 | reg->size = 1; |
| 561 | ret = i2c_smbus_read_byte_data(client, reg->reg); |
| 562 | if (ret < 0) |
| 563 | return ret; |
| 564 | |
| 565 | /* |
| 566 | * ret = int |
| 567 | * reg->val = __u64 |
| 568 | */ |
| 569 | reg->val = (__u64)ret; |
| 570 | |
| 571 | return 0; |
| 572 | } |
| 573 | |
| 574 | static int tw9910_s_register(struct v4l2_subdev *sd, |
| 575 | const struct v4l2_dbg_register *reg) |
| 576 | { |
| 577 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 578 | |
| 579 | if (reg->reg > 0xff || |
| 580 | reg->val > 0xff) |
| 581 | return -EINVAL; |
| 582 | |
| 583 | return i2c_smbus_write_byte_data(client, reg->reg, reg->val); |
| 584 | } |
| 585 | #endif |
| 586 | |
Alexey Khoroshilov | cf6a989 | 2018-12-30 06:41:41 -0500 | [diff] [blame] | 587 | static void tw9910_set_gpio_value(struct gpio_desc *desc, int value) |
| 588 | { |
| 589 | if (desc) { |
| 590 | gpiod_set_value(desc, value); |
| 591 | usleep_range(500, 1000); |
| 592 | } |
| 593 | } |
| 594 | |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 595 | static int tw9910_power_on(struct tw9910_priv *priv) |
| 596 | { |
| 597 | struct i2c_client *client = v4l2_get_subdevdata(&priv->subdev); |
| 598 | int ret; |
| 599 | |
| 600 | if (priv->clk) { |
| 601 | ret = clk_prepare_enable(priv->clk); |
| 602 | if (ret) |
| 603 | return ret; |
| 604 | } |
| 605 | |
Alexey Khoroshilov | cf6a989 | 2018-12-30 06:41:41 -0500 | [diff] [blame] | 606 | tw9910_set_gpio_value(priv->pdn_gpio, 0); |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 607 | |
| 608 | /* |
| 609 | * FIXME: The reset signal is connected to a shared GPIO on some |
| 610 | * platforms (namely the SuperH Migo-R). Until a framework becomes |
| 611 | * available to handle this cleanly, request the GPIO temporarily |
| 612 | * to avoid conflicts. |
| 613 | */ |
| 614 | priv->rstb_gpio = gpiod_get_optional(&client->dev, "rstb", |
| 615 | GPIOD_OUT_LOW); |
| 616 | if (IS_ERR(priv->rstb_gpio)) { |
| 617 | dev_info(&client->dev, "Unable to get GPIO \"rstb\""); |
Alexey Khoroshilov | d6b10dd | 2018-12-30 06:41:40 -0500 | [diff] [blame] | 618 | clk_disable_unprepare(priv->clk); |
Alexey Khoroshilov | cf6a989 | 2018-12-30 06:41:41 -0500 | [diff] [blame] | 619 | tw9910_set_gpio_value(priv->pdn_gpio, 1); |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 620 | return PTR_ERR(priv->rstb_gpio); |
| 621 | } |
| 622 | |
| 623 | if (priv->rstb_gpio) { |
Alexey Khoroshilov | cf6a989 | 2018-12-30 06:41:41 -0500 | [diff] [blame] | 624 | tw9910_set_gpio_value(priv->rstb_gpio, 1); |
| 625 | tw9910_set_gpio_value(priv->rstb_gpio, 0); |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 626 | |
| 627 | gpiod_put(priv->rstb_gpio); |
| 628 | } |
| 629 | |
| 630 | return 0; |
| 631 | } |
| 632 | |
| 633 | static int tw9910_power_off(struct tw9910_priv *priv) |
| 634 | { |
| 635 | clk_disable_unprepare(priv->clk); |
Alexey Khoroshilov | cf6a989 | 2018-12-30 06:41:41 -0500 | [diff] [blame] | 636 | tw9910_set_gpio_value(priv->pdn_gpio, 1); |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 637 | |
| 638 | return 0; |
| 639 | } |
| 640 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 641 | static int tw9910_s_power(struct v4l2_subdev *sd, int on) |
| 642 | { |
| 643 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 644 | struct tw9910_priv *priv = to_tw9910(client); |
| 645 | |
Joe Perches | d6fdad5 | 2018-03-01 06:50:22 -0500 | [diff] [blame] | 646 | return on ? tw9910_power_on(priv) : tw9910_power_off(priv); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 647 | } |
| 648 | |
| 649 | static int tw9910_set_frame(struct v4l2_subdev *sd, u32 *width, u32 *height) |
| 650 | { |
| 651 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 652 | struct tw9910_priv *priv = to_tw9910(client); |
| 653 | int ret = -EINVAL; |
| 654 | u8 val; |
| 655 | |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 656 | /* Select suitable norm. */ |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 657 | priv->scale = tw9910_select_norm(priv->norm, *width, *height); |
| 658 | if (!priv->scale) |
| 659 | goto tw9910_set_fmt_error; |
| 660 | |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 661 | /* Reset hardware. */ |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 662 | tw9910_reset(client); |
| 663 | |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 664 | /* Set bus width. */ |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 665 | val = 0x00; |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 666 | if (priv->info->buswidth == 16) |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 667 | val = LEN; |
| 668 | |
| 669 | ret = tw9910_mask_set(client, OPFORM, LEN, val); |
| 670 | if (ret < 0) |
| 671 | goto tw9910_set_fmt_error; |
| 672 | |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 673 | /* Select MPOUT behavior. */ |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 674 | switch (priv->info->mpout) { |
| 675 | case TW9910_MPO_VLOSS: |
| 676 | val = RTSEL_VLOSS; break; |
| 677 | case TW9910_MPO_HLOCK: |
| 678 | val = RTSEL_HLOCK; break; |
| 679 | case TW9910_MPO_SLOCK: |
| 680 | val = RTSEL_SLOCK; break; |
| 681 | case TW9910_MPO_VLOCK: |
| 682 | val = RTSEL_VLOCK; break; |
| 683 | case TW9910_MPO_MONO: |
| 684 | val = RTSEL_MONO; break; |
| 685 | case TW9910_MPO_DET50: |
| 686 | val = RTSEL_DET50; break; |
| 687 | case TW9910_MPO_FIELD: |
| 688 | val = RTSEL_FIELD; break; |
| 689 | case TW9910_MPO_RTCO: |
| 690 | val = RTSEL_RTCO; break; |
| 691 | default: |
| 692 | val = 0; |
| 693 | } |
| 694 | |
| 695 | ret = tw9910_mask_set(client, VBICNTL, RTSEL_MASK, val); |
| 696 | if (ret < 0) |
| 697 | goto tw9910_set_fmt_error; |
| 698 | |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 699 | /* Set scale. */ |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 700 | ret = tw9910_set_scale(client, priv->scale); |
| 701 | if (ret < 0) |
| 702 | goto tw9910_set_fmt_error; |
| 703 | |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 704 | /* Set hsync. */ |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 705 | ret = tw9910_set_hsync(client); |
| 706 | if (ret < 0) |
| 707 | goto tw9910_set_fmt_error; |
| 708 | |
| 709 | *width = priv->scale->width; |
| 710 | *height = priv->scale->height; |
| 711 | |
| 712 | return ret; |
| 713 | |
| 714 | tw9910_set_fmt_error: |
| 715 | |
| 716 | tw9910_reset(client); |
| 717 | priv->scale = NULL; |
| 718 | |
| 719 | return ret; |
| 720 | } |
| 721 | |
| 722 | static int tw9910_get_selection(struct v4l2_subdev *sd, |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 723 | struct v4l2_subdev_pad_config *cfg, |
Joe Perches | d6fdad5 | 2018-03-01 06:50:22 -0500 | [diff] [blame] | 724 | struct v4l2_subdev_selection *sel) |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 725 | { |
| 726 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 727 | struct tw9910_priv *priv = to_tw9910(client); |
| 728 | |
| 729 | if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) |
| 730 | return -EINVAL; |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 731 | /* Only CROP, CROP_DEFAULT and CROP_BOUNDS are supported. */ |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 732 | if (sel->target > V4L2_SEL_TGT_CROP_BOUNDS) |
| 733 | return -EINVAL; |
| 734 | |
| 735 | sel->r.left = 0; |
| 736 | sel->r.top = 0; |
| 737 | if (priv->norm & V4L2_STD_NTSC) { |
| 738 | sel->r.width = 640; |
| 739 | sel->r.height = 480; |
| 740 | } else { |
| 741 | sel->r.width = 768; |
| 742 | sel->r.height = 576; |
| 743 | } |
Joe Perches | cb5fd12 | 2018-03-01 07:01:22 -0500 | [diff] [blame] | 744 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 745 | return 0; |
| 746 | } |
| 747 | |
| 748 | static int tw9910_get_fmt(struct v4l2_subdev *sd, |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 749 | struct v4l2_subdev_pad_config *cfg, |
Joe Perches | d6fdad5 | 2018-03-01 06:50:22 -0500 | [diff] [blame] | 750 | struct v4l2_subdev_format *format) |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 751 | { |
| 752 | struct v4l2_mbus_framefmt *mf = &format->format; |
| 753 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 754 | struct tw9910_priv *priv = to_tw9910(client); |
| 755 | |
| 756 | if (format->pad) |
| 757 | return -EINVAL; |
| 758 | |
| 759 | if (!priv->scale) { |
| 760 | priv->scale = tw9910_select_norm(priv->norm, 640, 480); |
| 761 | if (!priv->scale) |
| 762 | return -EINVAL; |
| 763 | } |
| 764 | |
| 765 | mf->width = priv->scale->width; |
| 766 | mf->height = priv->scale->height; |
| 767 | mf->code = MEDIA_BUS_FMT_UYVY8_2X8; |
| 768 | mf->colorspace = V4L2_COLORSPACE_SMPTE170M; |
| 769 | mf->field = V4L2_FIELD_INTERLACED_BT; |
| 770 | |
| 771 | return 0; |
| 772 | } |
| 773 | |
| 774 | static int tw9910_s_fmt(struct v4l2_subdev *sd, |
| 775 | struct v4l2_mbus_framefmt *mf) |
| 776 | { |
| 777 | u32 width = mf->width, height = mf->height; |
| 778 | int ret; |
| 779 | |
| 780 | WARN_ON(mf->field != V4L2_FIELD_ANY && |
| 781 | mf->field != V4L2_FIELD_INTERLACED_BT); |
| 782 | |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 783 | /* Check color format. */ |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 784 | if (mf->code != MEDIA_BUS_FMT_UYVY8_2X8) |
| 785 | return -EINVAL; |
| 786 | |
| 787 | mf->colorspace = V4L2_COLORSPACE_SMPTE170M; |
| 788 | |
| 789 | ret = tw9910_set_frame(sd, &width, &height); |
Joe Perches | cb5fd12 | 2018-03-01 07:01:22 -0500 | [diff] [blame] | 790 | if (ret) |
| 791 | return ret; |
| 792 | |
| 793 | mf->width = width; |
| 794 | mf->height = height; |
| 795 | |
| 796 | return 0; |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 797 | } |
| 798 | |
| 799 | static int tw9910_set_fmt(struct v4l2_subdev *sd, |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 800 | struct v4l2_subdev_pad_config *cfg, |
Joe Perches | d6fdad5 | 2018-03-01 06:50:22 -0500 | [diff] [blame] | 801 | struct v4l2_subdev_format *format) |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 802 | { |
| 803 | struct v4l2_mbus_framefmt *mf = &format->format; |
| 804 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 805 | struct tw9910_priv *priv = to_tw9910(client); |
| 806 | const struct tw9910_scale_ctrl *scale; |
| 807 | |
| 808 | if (format->pad) |
| 809 | return -EINVAL; |
| 810 | |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 811 | if (mf->field == V4L2_FIELD_ANY) { |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 812 | mf->field = V4L2_FIELD_INTERLACED_BT; |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 813 | } else if (mf->field != V4L2_FIELD_INTERLACED_BT) { |
Joe Perches | cb5fd12 | 2018-03-01 07:01:22 -0500 | [diff] [blame] | 814 | dev_err(&client->dev, "Field type %d invalid\n", mf->field); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 815 | return -EINVAL; |
| 816 | } |
| 817 | |
| 818 | mf->code = MEDIA_BUS_FMT_UYVY8_2X8; |
| 819 | mf->colorspace = V4L2_COLORSPACE_SMPTE170M; |
| 820 | |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 821 | /* Select suitable norm. */ |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 822 | scale = tw9910_select_norm(priv->norm, mf->width, mf->height); |
| 823 | if (!scale) |
| 824 | return -EINVAL; |
| 825 | |
| 826 | mf->width = scale->width; |
| 827 | mf->height = scale->height; |
| 828 | |
| 829 | if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) |
| 830 | return tw9910_s_fmt(sd, mf); |
Joe Perches | cb5fd12 | 2018-03-01 07:01:22 -0500 | [diff] [blame] | 831 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 832 | cfg->try_fmt = *mf; |
Joe Perches | cb5fd12 | 2018-03-01 07:01:22 -0500 | [diff] [blame] | 833 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 834 | return 0; |
| 835 | } |
| 836 | |
| 837 | static int tw9910_video_probe(struct i2c_client *client) |
| 838 | { |
| 839 | struct tw9910_priv *priv = to_tw9910(client); |
| 840 | s32 id; |
| 841 | int ret; |
| 842 | |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 843 | /* TW9910 only use 8 or 16 bit bus width. */ |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 844 | if (priv->info->buswidth != 16 && priv->info->buswidth != 8) { |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 845 | dev_err(&client->dev, "bus width error\n"); |
| 846 | return -ENODEV; |
| 847 | } |
| 848 | |
| 849 | ret = tw9910_s_power(&priv->subdev, 1); |
| 850 | if (ret < 0) |
| 851 | return ret; |
| 852 | |
| 853 | /* |
Jacopo Mondi | 99b010b | 2018-03-02 09:46:34 -0500 | [diff] [blame] | 854 | * Check and show Product ID. |
| 855 | * So far only revisions 0 and 1 have been seen. |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 856 | */ |
| 857 | id = i2c_smbus_read_byte_data(client, ID); |
| 858 | priv->revision = GET_REV(id); |
| 859 | id = GET_ID(id); |
| 860 | |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 861 | if (id != 0x0b || priv->revision > 0x01) { |
Joe Perches | cb5fd12 | 2018-03-01 07:01:22 -0500 | [diff] [blame] | 862 | dev_err(&client->dev, "Product ID error %x:%x\n", |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 863 | id, priv->revision); |
| 864 | ret = -ENODEV; |
| 865 | goto done; |
| 866 | } |
| 867 | |
Joe Perches | cb5fd12 | 2018-03-01 07:01:22 -0500 | [diff] [blame] | 868 | dev_info(&client->dev, "tw9910 Product ID %0x:%0x\n", |
| 869 | id, priv->revision); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 870 | |
| 871 | priv->norm = V4L2_STD_NTSC; |
| 872 | priv->scale = &tw9910_ntsc_scales[0]; |
| 873 | |
| 874 | done: |
| 875 | tw9910_s_power(&priv->subdev, 0); |
Joe Perches | cb5fd12 | 2018-03-01 07:01:22 -0500 | [diff] [blame] | 876 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 877 | return ret; |
| 878 | } |
| 879 | |
| 880 | static const struct v4l2_subdev_core_ops tw9910_subdev_core_ops = { |
| 881 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 882 | .g_register = tw9910_g_register, |
| 883 | .s_register = tw9910_s_register, |
| 884 | #endif |
| 885 | .s_power = tw9910_s_power, |
| 886 | }; |
| 887 | |
| 888 | static int tw9910_enum_mbus_code(struct v4l2_subdev *sd, |
Mauro Carvalho Chehab | 876e32e | 2018-02-26 09:25:26 -0500 | [diff] [blame] | 889 | struct v4l2_subdev_pad_config *cfg, |
Joe Perches | d6fdad5 | 2018-03-01 06:50:22 -0500 | [diff] [blame] | 890 | struct v4l2_subdev_mbus_code_enum *code) |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 891 | { |
| 892 | if (code->pad || code->index) |
| 893 | return -EINVAL; |
| 894 | |
| 895 | code->code = MEDIA_BUS_FMT_UYVY8_2X8; |
Joe Perches | cb5fd12 | 2018-03-01 07:01:22 -0500 | [diff] [blame] | 896 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 897 | return 0; |
| 898 | } |
| 899 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 900 | static int tw9910_g_tvnorms(struct v4l2_subdev *sd, v4l2_std_id *norm) |
| 901 | { |
| 902 | *norm = V4L2_STD_NTSC | V4L2_STD_PAL; |
Joe Perches | cb5fd12 | 2018-03-01 07:01:22 -0500 | [diff] [blame] | 903 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 904 | return 0; |
| 905 | } |
| 906 | |
| 907 | static const struct v4l2_subdev_video_ops tw9910_subdev_video_ops = { |
| 908 | .s_std = tw9910_s_std, |
| 909 | .g_std = tw9910_g_std, |
| 910 | .s_stream = tw9910_s_stream, |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 911 | .g_tvnorms = tw9910_g_tvnorms, |
| 912 | }; |
| 913 | |
| 914 | static const struct v4l2_subdev_pad_ops tw9910_subdev_pad_ops = { |
| 915 | .enum_mbus_code = tw9910_enum_mbus_code, |
| 916 | .get_selection = tw9910_get_selection, |
| 917 | .get_fmt = tw9910_get_fmt, |
| 918 | .set_fmt = tw9910_set_fmt, |
| 919 | }; |
| 920 | |
| 921 | static const struct v4l2_subdev_ops tw9910_subdev_ops = { |
| 922 | .core = &tw9910_subdev_core_ops, |
| 923 | .video = &tw9910_subdev_video_ops, |
| 924 | .pad = &tw9910_subdev_pad_ops, |
| 925 | }; |
| 926 | |
| 927 | /* |
| 928 | * i2c_driver function |
| 929 | */ |
| 930 | |
| 931 | static int tw9910_probe(struct i2c_client *client, |
| 932 | const struct i2c_device_id *did) |
| 933 | |
| 934 | { |
| 935 | struct tw9910_priv *priv; |
| 936 | struct tw9910_video_info *info; |
| 937 | struct i2c_adapter *adapter = |
| 938 | to_i2c_adapter(client->dev.parent); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 939 | int ret; |
| 940 | |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 941 | if (!client->dev.platform_data) { |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 942 | dev_err(&client->dev, "TW9910: missing platform data!\n"); |
| 943 | return -EINVAL; |
| 944 | } |
| 945 | |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 946 | info = client->dev.platform_data; |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 947 | |
| 948 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { |
| 949 | dev_err(&client->dev, |
| 950 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE_DATA\n"); |
| 951 | return -EIO; |
| 952 | } |
| 953 | |
| 954 | priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL); |
| 955 | if (!priv) |
| 956 | return -ENOMEM; |
| 957 | |
Jacopo Mondi | 5d1787e | 2018-03-02 09:46:35 -0500 | [diff] [blame] | 958 | priv->info = info; |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 959 | |
| 960 | v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops); |
| 961 | |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 962 | priv->clk = clk_get(&client->dev, "xti"); |
| 963 | if (PTR_ERR(priv->clk) == -ENOENT) { |
| 964 | priv->clk = NULL; |
| 965 | } else if (IS_ERR(priv->clk)) { |
| 966 | dev_err(&client->dev, "Unable to get xti clock\n"); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 967 | return PTR_ERR(priv->clk); |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 968 | } |
| 969 | |
| 970 | priv->pdn_gpio = gpiod_get_optional(&client->dev, "pdn", |
| 971 | GPIOD_OUT_HIGH); |
| 972 | if (IS_ERR(priv->pdn_gpio)) { |
| 973 | dev_info(&client->dev, "Unable to get GPIO \"pdn\""); |
| 974 | ret = PTR_ERR(priv->pdn_gpio); |
| 975 | goto error_clk_put; |
| 976 | } |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 977 | |
| 978 | ret = tw9910_video_probe(client); |
| 979 | if (ret < 0) |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 980 | goto error_gpio_put; |
| 981 | |
| 982 | ret = v4l2_async_register_subdev(&priv->subdev); |
| 983 | if (ret) |
| 984 | goto error_gpio_put; |
| 985 | |
| 986 | return ret; |
| 987 | |
| 988 | error_gpio_put: |
| 989 | if (priv->pdn_gpio) |
| 990 | gpiod_put(priv->pdn_gpio); |
| 991 | error_clk_put: |
| 992 | clk_put(priv->clk); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 993 | |
| 994 | return ret; |
| 995 | } |
| 996 | |
| 997 | static int tw9910_remove(struct i2c_client *client) |
| 998 | { |
| 999 | struct tw9910_priv *priv = to_tw9910(client); |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 1000 | |
| 1001 | if (priv->pdn_gpio) |
| 1002 | gpiod_put(priv->pdn_gpio); |
| 1003 | clk_put(priv->clk); |
Jacopo Mondi | 341fe1d | 2019-01-17 12:33:04 -0200 | [diff] [blame] | 1004 | v4l2_async_unregister_subdev(&priv->subdev); |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 1005 | |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 1006 | return 0; |
| 1007 | } |
| 1008 | |
| 1009 | static const struct i2c_device_id tw9910_id[] = { |
| 1010 | { "tw9910", 0 }, |
| 1011 | { } |
| 1012 | }; |
| 1013 | MODULE_DEVICE_TABLE(i2c, tw9910_id); |
| 1014 | |
| 1015 | static struct i2c_driver tw9910_i2c_driver = { |
| 1016 | .driver = { |
| 1017 | .name = "tw9910", |
| 1018 | }, |
| 1019 | .probe = tw9910_probe, |
| 1020 | .remove = tw9910_remove, |
| 1021 | .id_table = tw9910_id, |
| 1022 | }; |
| 1023 | |
| 1024 | module_i2c_driver(tw9910_i2c_driver); |
| 1025 | |
Jacopo Mondi | 7b20f32 | 2018-02-21 12:48:03 -0500 | [diff] [blame] | 1026 | MODULE_DESCRIPTION("V4L2 driver for TW9910 video decoder"); |
Jacopo Mondi | e0d76c3 | 2018-02-21 12:48:02 -0500 | [diff] [blame] | 1027 | MODULE_AUTHOR("Kuninori Morimoto"); |
| 1028 | MODULE_LICENSE("GPL v2"); |