| 1 | /* |
| 2 | * drivers/media/i2c/smiapp/smiapp-core.c |
| 3 | * |
| 4 | * Generic driver for SMIA/SMIA++ compliant camera modules |
| 5 | * |
| 6 | * Copyright (C) 2010--2012 Nokia Corporation |
| 7 | * Contact: Sakari Ailus <sakari.ailus@iki.fi> |
| 8 | * |
| 9 | * Based on smiapp driver by Vimarsh Zutshi |
| 10 | * Based on jt8ev1.c by Vimarsh Zutshi |
| 11 | * Based on smia-sensor.c by Tuukka Toivonen <tuukkat76@gmail.com> |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or |
| 14 | * modify it under the terms of the GNU General Public License |
| 15 | * version 2 as published by the Free Software Foundation. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, but |
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 20 | * General Public License for more details. |
| 21 | */ |
| 22 | |
| 23 | #include <linux/clk.h> |
| 24 | #include <linux/delay.h> |
| 25 | #include <linux/device.h> |
| 26 | #include <linux/gpio.h> |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/of_gpio.h> |
| 29 | #include <linux/regulator/consumer.h> |
| 30 | #include <linux/slab.h> |
| 31 | #include <linux/smiapp.h> |
| 32 | #include <linux/v4l2-mediabus.h> |
| 33 | #include <media/v4l2-device.h> |
| 34 | #include <media/v4l2-of.h> |
| 35 | |
| 36 | #include "smiapp.h" |
| 37 | |
| 38 | #define SMIAPP_ALIGN_DIM(dim, flags) \ |
| 39 | ((flags) & V4L2_SEL_FLAG_GE \ |
| 40 | ? ALIGN((dim), 2) \ |
| 41 | : (dim) & ~1) |
| 42 | |
| 43 | /* |
| 44 | * smiapp_module_idents - supported camera modules |
| 45 | */ |
| 46 | static const struct smiapp_module_ident smiapp_module_idents[] = { |
| 47 | SMIAPP_IDENT_L(0x01, 0x022b, -1, "vs6555"), |
| 48 | SMIAPP_IDENT_L(0x01, 0x022e, -1, "vw6558"), |
| 49 | SMIAPP_IDENT_L(0x07, 0x7698, -1, "ovm7698"), |
| 50 | SMIAPP_IDENT_L(0x0b, 0x4242, -1, "smiapp-003"), |
| 51 | SMIAPP_IDENT_L(0x0c, 0x208a, -1, "tcm8330md"), |
| 52 | SMIAPP_IDENT_LQ(0x0c, 0x2134, -1, "tcm8500md", &smiapp_tcm8500md_quirk), |
| 53 | SMIAPP_IDENT_L(0x0c, 0x213e, -1, "et8en2"), |
| 54 | SMIAPP_IDENT_L(0x0c, 0x2184, -1, "tcm8580md"), |
| 55 | SMIAPP_IDENT_LQ(0x0c, 0x560f, -1, "jt8ew9", &smiapp_jt8ew9_quirk), |
| 56 | SMIAPP_IDENT_LQ(0x10, 0x4141, -1, "jt8ev1", &smiapp_jt8ev1_quirk), |
| 57 | SMIAPP_IDENT_LQ(0x10, 0x4241, -1, "imx125es", &smiapp_imx125es_quirk), |
| 58 | }; |
| 59 | |
| 60 | /* |
| 61 | * |
| 62 | * Dynamic Capability Identification |
| 63 | * |
| 64 | */ |
| 65 | |
| 66 | static int smiapp_read_frame_fmt(struct smiapp_sensor *sensor) |
| 67 | { |
| 68 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 69 | u32 fmt_model_type, fmt_model_subtype, ncol_desc, nrow_desc; |
| 70 | unsigned int i; |
| 71 | int rval; |
| 72 | int line_count = 0; |
| 73 | int embedded_start = -1, embedded_end = -1; |
| 74 | int image_start = 0; |
| 75 | |
| 76 | rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_TYPE, |
| 77 | &fmt_model_type); |
| 78 | if (rval) |
| 79 | return rval; |
| 80 | |
| 81 | rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_SUBTYPE, |
| 82 | &fmt_model_subtype); |
| 83 | if (rval) |
| 84 | return rval; |
| 85 | |
| 86 | ncol_desc = (fmt_model_subtype |
| 87 | & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_MASK) |
| 88 | >> SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_SHIFT; |
| 89 | nrow_desc = fmt_model_subtype |
| 90 | & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NROWS_MASK; |
| 91 | |
| 92 | dev_dbg(&client->dev, "format_model_type %s\n", |
| 93 | fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE |
| 94 | ? "2 byte" : |
| 95 | fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE |
| 96 | ? "4 byte" : "is simply bad"); |
| 97 | |
| 98 | for (i = 0; i < ncol_desc + nrow_desc; i++) { |
| 99 | u32 desc; |
| 100 | u32 pixelcode; |
| 101 | u32 pixels; |
| 102 | char *which; |
| 103 | char *what; |
| 104 | |
| 105 | if (fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE) { |
| 106 | rval = smiapp_read( |
| 107 | sensor, |
| 108 | SMIAPP_REG_U16_FRAME_FORMAT_DESCRIPTOR_2(i), |
| 109 | &desc); |
| 110 | if (rval) |
| 111 | return rval; |
| 112 | |
| 113 | pixelcode = |
| 114 | (desc |
| 115 | & SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_MASK) |
| 116 | >> SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_SHIFT; |
| 117 | pixels = desc & SMIAPP_FRAME_FORMAT_DESC_2_PIXELS_MASK; |
| 118 | } else if (fmt_model_type |
| 119 | == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE) { |
| 120 | rval = smiapp_read( |
| 121 | sensor, |
| 122 | SMIAPP_REG_U32_FRAME_FORMAT_DESCRIPTOR_4(i), |
| 123 | &desc); |
| 124 | if (rval) |
| 125 | return rval; |
| 126 | |
| 127 | pixelcode = |
| 128 | (desc |
| 129 | & SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_MASK) |
| 130 | >> SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_SHIFT; |
| 131 | pixels = desc & SMIAPP_FRAME_FORMAT_DESC_4_PIXELS_MASK; |
| 132 | } else { |
| 133 | dev_dbg(&client->dev, |
| 134 | "invalid frame format model type %d\n", |
| 135 | fmt_model_type); |
| 136 | return -EINVAL; |
| 137 | } |
| 138 | |
| 139 | if (i < ncol_desc) |
| 140 | which = "columns"; |
| 141 | else |
| 142 | which = "rows"; |
| 143 | |
| 144 | switch (pixelcode) { |
| 145 | case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED: |
| 146 | what = "embedded"; |
| 147 | break; |
| 148 | case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DUMMY: |
| 149 | what = "dummy"; |
| 150 | break; |
| 151 | case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_BLACK: |
| 152 | what = "black"; |
| 153 | break; |
| 154 | case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DARK: |
| 155 | what = "dark"; |
| 156 | break; |
| 157 | case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE: |
| 158 | what = "visible"; |
| 159 | break; |
| 160 | default: |
| 161 | what = "invalid"; |
| 162 | dev_dbg(&client->dev, "pixelcode %d\n", pixelcode); |
| 163 | break; |
| 164 | } |
| 165 | |
| 166 | dev_dbg(&client->dev, "%s pixels: %d %s\n", |
| 167 | what, pixels, which); |
| 168 | |
| 169 | if (i < ncol_desc) |
| 170 | continue; |
| 171 | |
| 172 | /* Handle row descriptors */ |
| 173 | if (pixelcode |
| 174 | == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED) { |
| 175 | embedded_start = line_count; |
| 176 | } else { |
| 177 | if (pixelcode == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE |
| 178 | || pixels >= sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES] / 2) |
| 179 | image_start = line_count; |
| 180 | if (embedded_start != -1 && embedded_end == -1) |
| 181 | embedded_end = line_count; |
| 182 | } |
| 183 | line_count += pixels; |
| 184 | } |
| 185 | |
| 186 | if (embedded_start == -1 || embedded_end == -1) { |
| 187 | embedded_start = 0; |
| 188 | embedded_end = 0; |
| 189 | } |
| 190 | |
| 191 | dev_dbg(&client->dev, "embedded data from lines %d to %d\n", |
| 192 | embedded_start, embedded_end); |
| 193 | dev_dbg(&client->dev, "image data starts at line %d\n", image_start); |
| 194 | |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | static int smiapp_pll_configure(struct smiapp_sensor *sensor) |
| 199 | { |
| 200 | struct smiapp_pll *pll = &sensor->pll; |
| 201 | int rval; |
| 202 | |
| 203 | rval = smiapp_write( |
| 204 | sensor, SMIAPP_REG_U16_VT_PIX_CLK_DIV, pll->vt.pix_clk_div); |
| 205 | if (rval < 0) |
| 206 | return rval; |
| 207 | |
| 208 | rval = smiapp_write( |
| 209 | sensor, SMIAPP_REG_U16_VT_SYS_CLK_DIV, pll->vt.sys_clk_div); |
| 210 | if (rval < 0) |
| 211 | return rval; |
| 212 | |
| 213 | rval = smiapp_write( |
| 214 | sensor, SMIAPP_REG_U16_PRE_PLL_CLK_DIV, pll->pre_pll_clk_div); |
| 215 | if (rval < 0) |
| 216 | return rval; |
| 217 | |
| 218 | rval = smiapp_write( |
| 219 | sensor, SMIAPP_REG_U16_PLL_MULTIPLIER, pll->pll_multiplier); |
| 220 | if (rval < 0) |
| 221 | return rval; |
| 222 | |
| 223 | /* Lane op clock ratio does not apply here. */ |
| 224 | rval = smiapp_write( |
| 225 | sensor, SMIAPP_REG_U32_REQUESTED_LINK_BIT_RATE_MBPS, |
| 226 | DIV_ROUND_UP(pll->op.sys_clk_freq_hz, 1000000 / 256 / 256)); |
| 227 | if (rval < 0 || sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0) |
| 228 | return rval; |
| 229 | |
| 230 | rval = smiapp_write( |
| 231 | sensor, SMIAPP_REG_U16_OP_PIX_CLK_DIV, pll->op.pix_clk_div); |
| 232 | if (rval < 0) |
| 233 | return rval; |
| 234 | |
| 235 | return smiapp_write( |
| 236 | sensor, SMIAPP_REG_U16_OP_SYS_CLK_DIV, pll->op.sys_clk_div); |
| 237 | } |
| 238 | |
| 239 | static int smiapp_pll_try(struct smiapp_sensor *sensor, |
| 240 | struct smiapp_pll *pll) |
| 241 | { |
| 242 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 243 | struct smiapp_pll_limits lim = { |
| 244 | .min_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_PRE_PLL_CLK_DIV], |
| 245 | .max_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_PRE_PLL_CLK_DIV], |
| 246 | .min_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_IP_FREQ_HZ], |
| 247 | .max_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_IP_FREQ_HZ], |
| 248 | .min_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MIN_PLL_MULTIPLIER], |
| 249 | .max_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MAX_PLL_MULTIPLIER], |
| 250 | .min_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_OP_FREQ_HZ], |
| 251 | .max_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_OP_FREQ_HZ], |
| 252 | |
| 253 | .op.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV], |
| 254 | .op.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV], |
| 255 | .op.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV], |
| 256 | .op.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV], |
| 257 | .op.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_FREQ_HZ], |
| 258 | .op.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_FREQ_HZ], |
| 259 | .op.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_FREQ_HZ], |
| 260 | .op.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_FREQ_HZ], |
| 261 | |
| 262 | .vt.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_DIV], |
| 263 | .vt.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_DIV], |
| 264 | .vt.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_DIV], |
| 265 | .vt.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_DIV], |
| 266 | .vt.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_FREQ_HZ], |
| 267 | .vt.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_FREQ_HZ], |
| 268 | .vt.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_FREQ_HZ], |
| 269 | .vt.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_FREQ_HZ], |
| 270 | |
| 271 | .min_line_length_pck_bin = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN], |
| 272 | .min_line_length_pck = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK], |
| 273 | }; |
| 274 | |
| 275 | return smiapp_pll_calculate(&client->dev, &lim, pll); |
| 276 | } |
| 277 | |
| 278 | static int smiapp_pll_update(struct smiapp_sensor *sensor) |
| 279 | { |
| 280 | struct smiapp_pll *pll = &sensor->pll; |
| 281 | int rval; |
| 282 | |
| 283 | pll->binning_horizontal = sensor->binning_horizontal; |
| 284 | pll->binning_vertical = sensor->binning_vertical; |
| 285 | pll->link_freq = |
| 286 | sensor->link_freq->qmenu_int[sensor->link_freq->val]; |
| 287 | pll->scale_m = sensor->scale_m; |
| 288 | pll->bits_per_pixel = sensor->csi_format->compressed; |
| 289 | |
| 290 | rval = smiapp_pll_try(sensor, pll); |
| 291 | if (rval < 0) |
| 292 | return rval; |
| 293 | |
| 294 | __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_parray, |
| 295 | pll->pixel_rate_pixel_array); |
| 296 | __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_csi, pll->pixel_rate_csi); |
| 297 | |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | |
| 302 | /* |
| 303 | * |
| 304 | * V4L2 Controls handling |
| 305 | * |
| 306 | */ |
| 307 | |
| 308 | static void __smiapp_update_exposure_limits(struct smiapp_sensor *sensor) |
| 309 | { |
| 310 | struct v4l2_ctrl *ctrl = sensor->exposure; |
| 311 | int max; |
| 312 | |
| 313 | max = sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height |
| 314 | + sensor->vblank->val |
| 315 | - sensor->limits[SMIAPP_LIMIT_COARSE_INTEGRATION_TIME_MAX_MARGIN]; |
| 316 | |
| 317 | __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max, ctrl->step, max); |
| 318 | } |
| 319 | |
| 320 | /* |
| 321 | * Order matters. |
| 322 | * |
| 323 | * 1. Bits-per-pixel, descending. |
| 324 | * 2. Bits-per-pixel compressed, descending. |
| 325 | * 3. Pixel order, same as in pixel_order_str. Formats for all four pixel |
| 326 | * orders must be defined. |
| 327 | */ |
| 328 | static const struct smiapp_csi_data_format smiapp_csi_data_formats[] = { |
| 329 | { MEDIA_BUS_FMT_SGRBG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GRBG, }, |
| 330 | { MEDIA_BUS_FMT_SRGGB12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_RGGB, }, |
| 331 | { MEDIA_BUS_FMT_SBGGR12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_BGGR, }, |
| 332 | { MEDIA_BUS_FMT_SGBRG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GBRG, }, |
| 333 | { MEDIA_BUS_FMT_SGRBG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GRBG, }, |
| 334 | { MEDIA_BUS_FMT_SRGGB10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_RGGB, }, |
| 335 | { MEDIA_BUS_FMT_SBGGR10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_BGGR, }, |
| 336 | { MEDIA_BUS_FMT_SGBRG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GBRG, }, |
| 337 | { MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GRBG, }, |
| 338 | { MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_RGGB, }, |
| 339 | { MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_BGGR, }, |
| 340 | { MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GBRG, }, |
| 341 | { MEDIA_BUS_FMT_SGRBG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GRBG, }, |
| 342 | { MEDIA_BUS_FMT_SRGGB8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_RGGB, }, |
| 343 | { MEDIA_BUS_FMT_SBGGR8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_BGGR, }, |
| 344 | { MEDIA_BUS_FMT_SGBRG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GBRG, }, |
| 345 | }; |
| 346 | |
| 347 | static const char *pixel_order_str[] = { "GRBG", "RGGB", "BGGR", "GBRG" }; |
| 348 | |
| 349 | #define to_csi_format_idx(fmt) (((unsigned long)(fmt) \ |
| 350 | - (unsigned long)smiapp_csi_data_formats) \ |
| 351 | / sizeof(*smiapp_csi_data_formats)) |
| 352 | |
| 353 | static u32 smiapp_pixel_order(struct smiapp_sensor *sensor) |
| 354 | { |
| 355 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 356 | int flip = 0; |
| 357 | |
| 358 | if (sensor->hflip) { |
| 359 | if (sensor->hflip->val) |
| 360 | flip |= SMIAPP_IMAGE_ORIENTATION_HFLIP; |
| 361 | |
| 362 | if (sensor->vflip->val) |
| 363 | flip |= SMIAPP_IMAGE_ORIENTATION_VFLIP; |
| 364 | } |
| 365 | |
| 366 | flip ^= sensor->hvflip_inv_mask; |
| 367 | |
| 368 | dev_dbg(&client->dev, "flip %d\n", flip); |
| 369 | return sensor->default_pixel_order ^ flip; |
| 370 | } |
| 371 | |
| 372 | static void smiapp_update_mbus_formats(struct smiapp_sensor *sensor) |
| 373 | { |
| 374 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 375 | unsigned int csi_format_idx = |
| 376 | to_csi_format_idx(sensor->csi_format) & ~3; |
| 377 | unsigned int internal_csi_format_idx = |
| 378 | to_csi_format_idx(sensor->internal_csi_format) & ~3; |
| 379 | unsigned int pixel_order = smiapp_pixel_order(sensor); |
| 380 | |
| 381 | sensor->mbus_frame_fmts = |
| 382 | sensor->default_mbus_frame_fmts << pixel_order; |
| 383 | sensor->csi_format = |
| 384 | &smiapp_csi_data_formats[csi_format_idx + pixel_order]; |
| 385 | sensor->internal_csi_format = |
| 386 | &smiapp_csi_data_formats[internal_csi_format_idx |
| 387 | + pixel_order]; |
| 388 | |
| 389 | BUG_ON(max(internal_csi_format_idx, csi_format_idx) + pixel_order |
| 390 | >= ARRAY_SIZE(smiapp_csi_data_formats)); |
| 391 | |
| 392 | dev_dbg(&client->dev, "new pixel order %s\n", |
| 393 | pixel_order_str[pixel_order]); |
| 394 | } |
| 395 | |
| 396 | static const char * const smiapp_test_patterns[] = { |
| 397 | "Disabled", |
| 398 | "Solid Colour", |
| 399 | "Eight Vertical Colour Bars", |
| 400 | "Colour Bars With Fade to Grey", |
| 401 | "Pseudorandom Sequence (PN9)", |
| 402 | }; |
| 403 | |
| 404 | static int smiapp_set_ctrl(struct v4l2_ctrl *ctrl) |
| 405 | { |
| 406 | struct smiapp_sensor *sensor = |
| 407 | container_of(ctrl->handler, struct smiapp_subdev, ctrl_handler) |
| 408 | ->sensor; |
| 409 | u32 orient = 0; |
| 410 | int exposure; |
| 411 | int rval; |
| 412 | |
| 413 | switch (ctrl->id) { |
| 414 | case V4L2_CID_ANALOGUE_GAIN: |
| 415 | return smiapp_write( |
| 416 | sensor, |
| 417 | SMIAPP_REG_U16_ANALOGUE_GAIN_CODE_GLOBAL, ctrl->val); |
| 418 | |
| 419 | case V4L2_CID_EXPOSURE: |
| 420 | return smiapp_write( |
| 421 | sensor, |
| 422 | SMIAPP_REG_U16_COARSE_INTEGRATION_TIME, ctrl->val); |
| 423 | |
| 424 | case V4L2_CID_HFLIP: |
| 425 | case V4L2_CID_VFLIP: |
| 426 | if (sensor->streaming) |
| 427 | return -EBUSY; |
| 428 | |
| 429 | if (sensor->hflip->val) |
| 430 | orient |= SMIAPP_IMAGE_ORIENTATION_HFLIP; |
| 431 | |
| 432 | if (sensor->vflip->val) |
| 433 | orient |= SMIAPP_IMAGE_ORIENTATION_VFLIP; |
| 434 | |
| 435 | orient ^= sensor->hvflip_inv_mask; |
| 436 | rval = smiapp_write(sensor, |
| 437 | SMIAPP_REG_U8_IMAGE_ORIENTATION, |
| 438 | orient); |
| 439 | if (rval < 0) |
| 440 | return rval; |
| 441 | |
| 442 | smiapp_update_mbus_formats(sensor); |
| 443 | |
| 444 | return 0; |
| 445 | |
| 446 | case V4L2_CID_VBLANK: |
| 447 | exposure = sensor->exposure->val; |
| 448 | |
| 449 | __smiapp_update_exposure_limits(sensor); |
| 450 | |
| 451 | if (exposure > sensor->exposure->maximum) { |
| 452 | sensor->exposure->val = |
| 453 | sensor->exposure->maximum; |
| 454 | rval = smiapp_set_ctrl( |
| 455 | sensor->exposure); |
| 456 | if (rval < 0) |
| 457 | return rval; |
| 458 | } |
| 459 | |
| 460 | return smiapp_write( |
| 461 | sensor, SMIAPP_REG_U16_FRAME_LENGTH_LINES, |
| 462 | sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height |
| 463 | + ctrl->val); |
| 464 | |
| 465 | case V4L2_CID_HBLANK: |
| 466 | return smiapp_write( |
| 467 | sensor, SMIAPP_REG_U16_LINE_LENGTH_PCK, |
| 468 | sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width |
| 469 | + ctrl->val); |
| 470 | |
| 471 | case V4L2_CID_LINK_FREQ: |
| 472 | if (sensor->streaming) |
| 473 | return -EBUSY; |
| 474 | |
| 475 | return smiapp_pll_update(sensor); |
| 476 | |
| 477 | case V4L2_CID_TEST_PATTERN: { |
| 478 | unsigned int i; |
| 479 | |
| 480 | for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) |
| 481 | v4l2_ctrl_activate( |
| 482 | sensor->test_data[i], |
| 483 | ctrl->val == |
| 484 | V4L2_SMIAPP_TEST_PATTERN_MODE_SOLID_COLOUR); |
| 485 | |
| 486 | return smiapp_write( |
| 487 | sensor, SMIAPP_REG_U16_TEST_PATTERN_MODE, ctrl->val); |
| 488 | } |
| 489 | |
| 490 | case V4L2_CID_TEST_PATTERN_RED: |
| 491 | return smiapp_write( |
| 492 | sensor, SMIAPP_REG_U16_TEST_DATA_RED, ctrl->val); |
| 493 | |
| 494 | case V4L2_CID_TEST_PATTERN_GREENR: |
| 495 | return smiapp_write( |
| 496 | sensor, SMIAPP_REG_U16_TEST_DATA_GREENR, ctrl->val); |
| 497 | |
| 498 | case V4L2_CID_TEST_PATTERN_BLUE: |
| 499 | return smiapp_write( |
| 500 | sensor, SMIAPP_REG_U16_TEST_DATA_BLUE, ctrl->val); |
| 501 | |
| 502 | case V4L2_CID_TEST_PATTERN_GREENB: |
| 503 | return smiapp_write( |
| 504 | sensor, SMIAPP_REG_U16_TEST_DATA_GREENB, ctrl->val); |
| 505 | |
| 506 | case V4L2_CID_PIXEL_RATE: |
| 507 | /* For v4l2_ctrl_s_ctrl_int64() used internally. */ |
| 508 | return 0; |
| 509 | |
| 510 | default: |
| 511 | return -EINVAL; |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | static const struct v4l2_ctrl_ops smiapp_ctrl_ops = { |
| 516 | .s_ctrl = smiapp_set_ctrl, |
| 517 | }; |
| 518 | |
| 519 | static int smiapp_init_controls(struct smiapp_sensor *sensor) |
| 520 | { |
| 521 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 522 | int rval; |
| 523 | |
| 524 | rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 12); |
| 525 | if (rval) |
| 526 | return rval; |
| 527 | |
| 528 | sensor->pixel_array->ctrl_handler.lock = &sensor->mutex; |
| 529 | |
| 530 | sensor->analog_gain = v4l2_ctrl_new_std( |
| 531 | &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, |
| 532 | V4L2_CID_ANALOGUE_GAIN, |
| 533 | sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN], |
| 534 | sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MAX], |
| 535 | max(sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_STEP], 1U), |
| 536 | sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN]); |
| 537 | |
| 538 | /* Exposure limits will be updated soon, use just something here. */ |
| 539 | sensor->exposure = v4l2_ctrl_new_std( |
| 540 | &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, |
| 541 | V4L2_CID_EXPOSURE, 0, 0, 1, 0); |
| 542 | |
| 543 | sensor->hflip = v4l2_ctrl_new_std( |
| 544 | &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, |
| 545 | V4L2_CID_HFLIP, 0, 1, 1, 0); |
| 546 | sensor->vflip = v4l2_ctrl_new_std( |
| 547 | &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, |
| 548 | V4L2_CID_VFLIP, 0, 1, 1, 0); |
| 549 | |
| 550 | sensor->vblank = v4l2_ctrl_new_std( |
| 551 | &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, |
| 552 | V4L2_CID_VBLANK, 0, 1, 1, 0); |
| 553 | |
| 554 | if (sensor->vblank) |
| 555 | sensor->vblank->flags |= V4L2_CTRL_FLAG_UPDATE; |
| 556 | |
| 557 | sensor->hblank = v4l2_ctrl_new_std( |
| 558 | &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, |
| 559 | V4L2_CID_HBLANK, 0, 1, 1, 0); |
| 560 | |
| 561 | if (sensor->hblank) |
| 562 | sensor->hblank->flags |= V4L2_CTRL_FLAG_UPDATE; |
| 563 | |
| 564 | sensor->pixel_rate_parray = v4l2_ctrl_new_std( |
| 565 | &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, |
| 566 | V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1); |
| 567 | |
| 568 | v4l2_ctrl_new_std_menu_items(&sensor->pixel_array->ctrl_handler, |
| 569 | &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN, |
| 570 | ARRAY_SIZE(smiapp_test_patterns) - 1, |
| 571 | 0, 0, smiapp_test_patterns); |
| 572 | |
| 573 | if (sensor->pixel_array->ctrl_handler.error) { |
| 574 | dev_err(&client->dev, |
| 575 | "pixel array controls initialization failed (%d)\n", |
| 576 | sensor->pixel_array->ctrl_handler.error); |
| 577 | return sensor->pixel_array->ctrl_handler.error; |
| 578 | } |
| 579 | |
| 580 | sensor->pixel_array->sd.ctrl_handler = |
| 581 | &sensor->pixel_array->ctrl_handler; |
| 582 | |
| 583 | v4l2_ctrl_cluster(2, &sensor->hflip); |
| 584 | |
| 585 | rval = v4l2_ctrl_handler_init(&sensor->src->ctrl_handler, 0); |
| 586 | if (rval) |
| 587 | return rval; |
| 588 | |
| 589 | sensor->src->ctrl_handler.lock = &sensor->mutex; |
| 590 | |
| 591 | sensor->pixel_rate_csi = v4l2_ctrl_new_std( |
| 592 | &sensor->src->ctrl_handler, &smiapp_ctrl_ops, |
| 593 | V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1); |
| 594 | |
| 595 | if (sensor->src->ctrl_handler.error) { |
| 596 | dev_err(&client->dev, |
| 597 | "src controls initialization failed (%d)\n", |
| 598 | sensor->src->ctrl_handler.error); |
| 599 | return sensor->src->ctrl_handler.error; |
| 600 | } |
| 601 | |
| 602 | sensor->src->sd.ctrl_handler = &sensor->src->ctrl_handler; |
| 603 | |
| 604 | return 0; |
| 605 | } |
| 606 | |
| 607 | /* |
| 608 | * For controls that require information on available media bus codes |
| 609 | * and linke frequencies. |
| 610 | */ |
| 611 | static int smiapp_init_late_controls(struct smiapp_sensor *sensor) |
| 612 | { |
| 613 | unsigned long *valid_link_freqs = &sensor->valid_link_freqs[ |
| 614 | sensor->csi_format->compressed - SMIAPP_COMPRESSED_BASE]; |
| 615 | unsigned int max, i; |
| 616 | |
| 617 | for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) { |
| 618 | int max_value = (1 << sensor->csi_format->width) - 1; |
| 619 | |
| 620 | sensor->test_data[i] = v4l2_ctrl_new_std( |
| 621 | &sensor->pixel_array->ctrl_handler, |
| 622 | &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN_RED + i, |
| 623 | 0, max_value, 1, max_value); |
| 624 | } |
| 625 | |
| 626 | for (max = 0; sensor->platform_data->op_sys_clock[max + 1]; max++); |
| 627 | |
| 628 | sensor->link_freq = v4l2_ctrl_new_int_menu( |
| 629 | &sensor->src->ctrl_handler, &smiapp_ctrl_ops, |
| 630 | V4L2_CID_LINK_FREQ, __fls(*valid_link_freqs), |
| 631 | __ffs(*valid_link_freqs), sensor->platform_data->op_sys_clock); |
| 632 | |
| 633 | return sensor->src->ctrl_handler.error; |
| 634 | } |
| 635 | |
| 636 | static void smiapp_free_controls(struct smiapp_sensor *sensor) |
| 637 | { |
| 638 | unsigned int i; |
| 639 | |
| 640 | for (i = 0; i < sensor->ssds_used; i++) |
| 641 | v4l2_ctrl_handler_free(&sensor->ssds[i].ctrl_handler); |
| 642 | } |
| 643 | |
| 644 | static int smiapp_get_limits(struct smiapp_sensor *sensor, int const *limit, |
| 645 | unsigned int n) |
| 646 | { |
| 647 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 648 | unsigned int i; |
| 649 | u32 val; |
| 650 | int rval; |
| 651 | |
| 652 | for (i = 0; i < n; i++) { |
| 653 | rval = smiapp_read( |
| 654 | sensor, smiapp_reg_limits[limit[i]].addr, &val); |
| 655 | if (rval) |
| 656 | return rval; |
| 657 | sensor->limits[limit[i]] = val; |
| 658 | dev_dbg(&client->dev, "0x%8.8x \"%s\" = %u, 0x%x\n", |
| 659 | smiapp_reg_limits[limit[i]].addr, |
| 660 | smiapp_reg_limits[limit[i]].what, val, val); |
| 661 | } |
| 662 | |
| 663 | return 0; |
| 664 | } |
| 665 | |
| 666 | static int smiapp_get_all_limits(struct smiapp_sensor *sensor) |
| 667 | { |
| 668 | unsigned int i; |
| 669 | int rval; |
| 670 | |
| 671 | for (i = 0; i < SMIAPP_LIMIT_LAST; i++) { |
| 672 | rval = smiapp_get_limits(sensor, &i, 1); |
| 673 | if (rval < 0) |
| 674 | return rval; |
| 675 | } |
| 676 | |
| 677 | if (sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] == 0) |
| 678 | smiapp_replace_limit(sensor, SMIAPP_LIMIT_SCALER_N_MIN, 16); |
| 679 | |
| 680 | return 0; |
| 681 | } |
| 682 | |
| 683 | static int smiapp_get_limits_binning(struct smiapp_sensor *sensor) |
| 684 | { |
| 685 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 686 | static u32 const limits[] = { |
| 687 | SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN, |
| 688 | SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN, |
| 689 | SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN, |
| 690 | SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN, |
| 691 | SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN, |
| 692 | SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN_BIN, |
| 693 | SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN_BIN, |
| 694 | }; |
| 695 | static u32 const limits_replace[] = { |
| 696 | SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES, |
| 697 | SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES, |
| 698 | SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK, |
| 699 | SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK, |
| 700 | SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK, |
| 701 | SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN, |
| 702 | SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN, |
| 703 | }; |
| 704 | unsigned int i; |
| 705 | int rval; |
| 706 | |
| 707 | if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY] == |
| 708 | SMIAPP_BINNING_CAPABILITY_NO) { |
| 709 | for (i = 0; i < ARRAY_SIZE(limits); i++) |
| 710 | sensor->limits[limits[i]] = |
| 711 | sensor->limits[limits_replace[i]]; |
| 712 | |
| 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | rval = smiapp_get_limits(sensor, limits, ARRAY_SIZE(limits)); |
| 717 | if (rval < 0) |
| 718 | return rval; |
| 719 | |
| 720 | /* |
| 721 | * Sanity check whether the binning limits are valid. If not, |
| 722 | * use the non-binning ones. |
| 723 | */ |
| 724 | if (sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN] |
| 725 | && sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN] |
| 726 | && sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN]) |
| 727 | return 0; |
| 728 | |
| 729 | for (i = 0; i < ARRAY_SIZE(limits); i++) { |
| 730 | dev_dbg(&client->dev, |
| 731 | "replace limit 0x%8.8x \"%s\" = %d, 0x%x\n", |
| 732 | smiapp_reg_limits[limits[i]].addr, |
| 733 | smiapp_reg_limits[limits[i]].what, |
| 734 | sensor->limits[limits_replace[i]], |
| 735 | sensor->limits[limits_replace[i]]); |
| 736 | sensor->limits[limits[i]] = |
| 737 | sensor->limits[limits_replace[i]]; |
| 738 | } |
| 739 | |
| 740 | return 0; |
| 741 | } |
| 742 | |
| 743 | static int smiapp_get_mbus_formats(struct smiapp_sensor *sensor) |
| 744 | { |
| 745 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 746 | struct smiapp_pll *pll = &sensor->pll; |
| 747 | unsigned int type, n; |
| 748 | unsigned int i, pixel_order; |
| 749 | int rval; |
| 750 | |
| 751 | rval = smiapp_read( |
| 752 | sensor, SMIAPP_REG_U8_DATA_FORMAT_MODEL_TYPE, &type); |
| 753 | if (rval) |
| 754 | return rval; |
| 755 | |
| 756 | dev_dbg(&client->dev, "data_format_model_type %d\n", type); |
| 757 | |
| 758 | rval = smiapp_read(sensor, SMIAPP_REG_U8_PIXEL_ORDER, |
| 759 | &pixel_order); |
| 760 | if (rval) |
| 761 | return rval; |
| 762 | |
| 763 | if (pixel_order >= ARRAY_SIZE(pixel_order_str)) { |
| 764 | dev_dbg(&client->dev, "bad pixel order %d\n", pixel_order); |
| 765 | return -EINVAL; |
| 766 | } |
| 767 | |
| 768 | dev_dbg(&client->dev, "pixel order %d (%s)\n", pixel_order, |
| 769 | pixel_order_str[pixel_order]); |
| 770 | |
| 771 | switch (type) { |
| 772 | case SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL: |
| 773 | n = SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL_N; |
| 774 | break; |
| 775 | case SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED: |
| 776 | n = SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED_N; |
| 777 | break; |
| 778 | default: |
| 779 | return -EINVAL; |
| 780 | } |
| 781 | |
| 782 | sensor->default_pixel_order = pixel_order; |
| 783 | sensor->mbus_frame_fmts = 0; |
| 784 | |
| 785 | for (i = 0; i < n; i++) { |
| 786 | unsigned int fmt, j; |
| 787 | |
| 788 | rval = smiapp_read( |
| 789 | sensor, |
| 790 | SMIAPP_REG_U16_DATA_FORMAT_DESCRIPTOR(i), &fmt); |
| 791 | if (rval) |
| 792 | return rval; |
| 793 | |
| 794 | dev_dbg(&client->dev, "%u: bpp %u, compressed %u\n", |
| 795 | i, fmt >> 8, (u8)fmt); |
| 796 | |
| 797 | for (j = 0; j < ARRAY_SIZE(smiapp_csi_data_formats); j++) { |
| 798 | const struct smiapp_csi_data_format *f = |
| 799 | &smiapp_csi_data_formats[j]; |
| 800 | |
| 801 | if (f->pixel_order != SMIAPP_PIXEL_ORDER_GRBG) |
| 802 | continue; |
| 803 | |
| 804 | if (f->width != fmt >> 8 || f->compressed != (u8)fmt) |
| 805 | continue; |
| 806 | |
| 807 | dev_dbg(&client->dev, "jolly good! %d\n", j); |
| 808 | |
| 809 | sensor->default_mbus_frame_fmts |= 1 << j; |
| 810 | } |
| 811 | } |
| 812 | |
| 813 | /* Figure out which BPP values can be used with which formats. */ |
| 814 | pll->binning_horizontal = 1; |
| 815 | pll->binning_vertical = 1; |
| 816 | pll->scale_m = sensor->scale_m; |
| 817 | |
| 818 | for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) { |
| 819 | const struct smiapp_csi_data_format *f = |
| 820 | &smiapp_csi_data_formats[i]; |
| 821 | unsigned long *valid_link_freqs = |
| 822 | &sensor->valid_link_freqs[ |
| 823 | f->compressed - SMIAPP_COMPRESSED_BASE]; |
| 824 | unsigned int j; |
| 825 | |
| 826 | BUG_ON(f->compressed < SMIAPP_COMPRESSED_BASE); |
| 827 | BUG_ON(f->compressed > SMIAPP_COMPRESSED_MAX); |
| 828 | |
| 829 | if (!(sensor->default_mbus_frame_fmts & 1 << i)) |
| 830 | continue; |
| 831 | |
| 832 | pll->bits_per_pixel = f->compressed; |
| 833 | |
| 834 | for (j = 0; sensor->platform_data->op_sys_clock[j]; j++) { |
| 835 | pll->link_freq = sensor->platform_data->op_sys_clock[j]; |
| 836 | |
| 837 | rval = smiapp_pll_try(sensor, pll); |
| 838 | dev_dbg(&client->dev, "link freq %u Hz, bpp %u %s\n", |
| 839 | pll->link_freq, pll->bits_per_pixel, |
| 840 | rval ? "not ok" : "ok"); |
| 841 | if (rval) |
| 842 | continue; |
| 843 | |
| 844 | set_bit(j, valid_link_freqs); |
| 845 | } |
| 846 | |
| 847 | if (!*valid_link_freqs) { |
| 848 | dev_info(&client->dev, |
| 849 | "no valid link frequencies for %u bpp\n", |
| 850 | f->compressed); |
| 851 | sensor->default_mbus_frame_fmts &= ~BIT(i); |
| 852 | continue; |
| 853 | } |
| 854 | |
| 855 | if (!sensor->csi_format |
| 856 | || f->width > sensor->csi_format->width |
| 857 | || (f->width == sensor->csi_format->width |
| 858 | && f->compressed > sensor->csi_format->compressed)) { |
| 859 | sensor->csi_format = f; |
| 860 | sensor->internal_csi_format = f; |
| 861 | } |
| 862 | } |
| 863 | |
| 864 | if (!sensor->csi_format) { |
| 865 | dev_err(&client->dev, "no supported mbus code found\n"); |
| 866 | return -EINVAL; |
| 867 | } |
| 868 | |
| 869 | smiapp_update_mbus_formats(sensor); |
| 870 | |
| 871 | return 0; |
| 872 | } |
| 873 | |
| 874 | static void smiapp_update_blanking(struct smiapp_sensor *sensor) |
| 875 | { |
| 876 | struct v4l2_ctrl *vblank = sensor->vblank; |
| 877 | struct v4l2_ctrl *hblank = sensor->hblank; |
| 878 | int min, max; |
| 879 | |
| 880 | min = max_t(int, |
| 881 | sensor->limits[SMIAPP_LIMIT_MIN_FRAME_BLANKING_LINES], |
| 882 | sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN] - |
| 883 | sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height); |
| 884 | max = sensor->limits[SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN] - |
| 885 | sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height; |
| 886 | |
| 887 | __v4l2_ctrl_modify_range(vblank, min, max, vblank->step, min); |
| 888 | |
| 889 | min = max_t(int, |
| 890 | sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN] - |
| 891 | sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width, |
| 892 | sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN]); |
| 893 | max = sensor->limits[SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN] - |
| 894 | sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width; |
| 895 | |
| 896 | __v4l2_ctrl_modify_range(hblank, min, max, hblank->step, min); |
| 897 | |
| 898 | __smiapp_update_exposure_limits(sensor); |
| 899 | } |
| 900 | |
| 901 | static int smiapp_update_mode(struct smiapp_sensor *sensor) |
| 902 | { |
| 903 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 904 | unsigned int binning_mode; |
| 905 | int rval; |
| 906 | |
| 907 | dev_dbg(&client->dev, "frame size: %dx%d\n", |
| 908 | sensor->src->crop[SMIAPP_PAD_SRC].width, |
| 909 | sensor->src->crop[SMIAPP_PAD_SRC].height); |
| 910 | dev_dbg(&client->dev, "csi format width: %d\n", |
| 911 | sensor->csi_format->width); |
| 912 | |
| 913 | /* Binning has to be set up here; it affects limits */ |
| 914 | if (sensor->binning_horizontal == 1 && |
| 915 | sensor->binning_vertical == 1) { |
| 916 | binning_mode = 0; |
| 917 | } else { |
| 918 | u8 binning_type = |
| 919 | (sensor->binning_horizontal << 4) |
| 920 | | sensor->binning_vertical; |
| 921 | |
| 922 | rval = smiapp_write( |
| 923 | sensor, SMIAPP_REG_U8_BINNING_TYPE, binning_type); |
| 924 | if (rval < 0) |
| 925 | return rval; |
| 926 | |
| 927 | binning_mode = 1; |
| 928 | } |
| 929 | rval = smiapp_write(sensor, SMIAPP_REG_U8_BINNING_MODE, binning_mode); |
| 930 | if (rval < 0) |
| 931 | return rval; |
| 932 | |
| 933 | /* Get updated limits due to binning */ |
| 934 | rval = smiapp_get_limits_binning(sensor); |
| 935 | if (rval < 0) |
| 936 | return rval; |
| 937 | |
| 938 | rval = smiapp_pll_update(sensor); |
| 939 | if (rval < 0) |
| 940 | return rval; |
| 941 | |
| 942 | /* Output from pixel array, including blanking */ |
| 943 | smiapp_update_blanking(sensor); |
| 944 | |
| 945 | dev_dbg(&client->dev, "vblank\t\t%d\n", sensor->vblank->val); |
| 946 | dev_dbg(&client->dev, "hblank\t\t%d\n", sensor->hblank->val); |
| 947 | |
| 948 | dev_dbg(&client->dev, "real timeperframe\t100/%d\n", |
| 949 | sensor->pll.pixel_rate_pixel_array / |
| 950 | ((sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width |
| 951 | + sensor->hblank->val) * |
| 952 | (sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height |
| 953 | + sensor->vblank->val) / 100)); |
| 954 | |
| 955 | return 0; |
| 956 | } |
| 957 | |
| 958 | /* |
| 959 | * |
| 960 | * SMIA++ NVM handling |
| 961 | * |
| 962 | */ |
| 963 | static int smiapp_read_nvm(struct smiapp_sensor *sensor, |
| 964 | unsigned char *nvm) |
| 965 | { |
| 966 | u32 i, s, p, np, v; |
| 967 | int rval = 0, rval2; |
| 968 | |
| 969 | np = sensor->nvm_size / SMIAPP_NVM_PAGE_SIZE; |
| 970 | for (p = 0; p < np; p++) { |
| 971 | rval = smiapp_write( |
| 972 | sensor, |
| 973 | SMIAPP_REG_U8_DATA_TRANSFER_IF_1_PAGE_SELECT, p); |
| 974 | if (rval) |
| 975 | goto out; |
| 976 | |
| 977 | rval = smiapp_write(sensor, |
| 978 | SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL, |
| 979 | SMIAPP_DATA_TRANSFER_IF_1_CTRL_EN | |
| 980 | SMIAPP_DATA_TRANSFER_IF_1_CTRL_RD_EN); |
| 981 | if (rval) |
| 982 | goto out; |
| 983 | |
| 984 | for (i = 0; i < 1000; i++) { |
| 985 | rval = smiapp_read( |
| 986 | sensor, |
| 987 | SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS, &s); |
| 988 | |
| 989 | if (rval) |
| 990 | goto out; |
| 991 | |
| 992 | if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY) |
| 993 | break; |
| 994 | |
| 995 | if (--i == 0) { |
| 996 | rval = -ETIMEDOUT; |
| 997 | goto out; |
| 998 | } |
| 999 | |
| 1000 | } |
| 1001 | |
| 1002 | for (i = 0; i < SMIAPP_NVM_PAGE_SIZE; i++) { |
| 1003 | rval = smiapp_read( |
| 1004 | sensor, |
| 1005 | SMIAPP_REG_U8_DATA_TRANSFER_IF_1_DATA_0 + i, |
| 1006 | &v); |
| 1007 | if (rval) |
| 1008 | goto out; |
| 1009 | |
| 1010 | *nvm++ = v; |
| 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | out: |
| 1015 | rval2 = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL, 0); |
| 1016 | if (rval < 0) |
| 1017 | return rval; |
| 1018 | else |
| 1019 | return rval2; |
| 1020 | } |
| 1021 | |
| 1022 | /* |
| 1023 | * |
| 1024 | * SMIA++ CCI address control |
| 1025 | * |
| 1026 | */ |
| 1027 | static int smiapp_change_cci_addr(struct smiapp_sensor *sensor) |
| 1028 | { |
| 1029 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 1030 | int rval; |
| 1031 | u32 val; |
| 1032 | |
| 1033 | client->addr = sensor->platform_data->i2c_addr_dfl; |
| 1034 | |
| 1035 | rval = smiapp_write(sensor, |
| 1036 | SMIAPP_REG_U8_CCI_ADDRESS_CONTROL, |
| 1037 | sensor->platform_data->i2c_addr_alt << 1); |
| 1038 | if (rval) |
| 1039 | return rval; |
| 1040 | |
| 1041 | client->addr = sensor->platform_data->i2c_addr_alt; |
| 1042 | |
| 1043 | /* verify addr change went ok */ |
| 1044 | rval = smiapp_read(sensor, SMIAPP_REG_U8_CCI_ADDRESS_CONTROL, &val); |
| 1045 | if (rval) |
| 1046 | return rval; |
| 1047 | |
| 1048 | if (val != sensor->platform_data->i2c_addr_alt << 1) |
| 1049 | return -ENODEV; |
| 1050 | |
| 1051 | return 0; |
| 1052 | } |
| 1053 | |
| 1054 | /* |
| 1055 | * |
| 1056 | * SMIA++ Mode Control |
| 1057 | * |
| 1058 | */ |
| 1059 | static int smiapp_setup_flash_strobe(struct smiapp_sensor *sensor) |
| 1060 | { |
| 1061 | struct smiapp_flash_strobe_parms *strobe_setup; |
| 1062 | unsigned int ext_freq = sensor->platform_data->ext_clk; |
| 1063 | u32 tmp; |
| 1064 | u32 strobe_adjustment; |
| 1065 | u32 strobe_width_high_rs; |
| 1066 | int rval; |
| 1067 | |
| 1068 | strobe_setup = sensor->platform_data->strobe_setup; |
| 1069 | |
| 1070 | /* |
| 1071 | * How to calculate registers related to strobe length. Please |
| 1072 | * do not change, or if you do at least know what you're |
| 1073 | * doing. :-) |
| 1074 | * |
| 1075 | * Sakari Ailus <sakari.ailus@iki.fi> 2010-10-25 |
| 1076 | * |
| 1077 | * flash_strobe_length [us] / 10^6 = (tFlash_strobe_width_ctrl |
| 1078 | * / EXTCLK freq [Hz]) * flash_strobe_adjustment |
| 1079 | * |
| 1080 | * tFlash_strobe_width_ctrl E N, [1 - 0xffff] |
| 1081 | * flash_strobe_adjustment E N, [1 - 0xff] |
| 1082 | * |
| 1083 | * The formula above is written as below to keep it on one |
| 1084 | * line: |
| 1085 | * |
| 1086 | * l / 10^6 = w / e * a |
| 1087 | * |
| 1088 | * Let's mark w * a by x: |
| 1089 | * |
| 1090 | * x = w * a |
| 1091 | * |
| 1092 | * Thus, we get: |
| 1093 | * |
| 1094 | * x = l * e / 10^6 |
| 1095 | * |
| 1096 | * The strobe width must be at least as long as requested, |
| 1097 | * thus rounding upwards is needed. |
| 1098 | * |
| 1099 | * x = (l * e + 10^6 - 1) / 10^6 |
| 1100 | * ----------------------------- |
| 1101 | * |
| 1102 | * Maximum possible accuracy is wanted at all times. Thus keep |
| 1103 | * a as small as possible. |
| 1104 | * |
| 1105 | * Calculate a, assuming maximum w, with rounding upwards: |
| 1106 | * |
| 1107 | * a = (x + (2^16 - 1) - 1) / (2^16 - 1) |
| 1108 | * ------------------------------------- |
| 1109 | * |
| 1110 | * Thus, we also get w, with that a, with rounding upwards: |
| 1111 | * |
| 1112 | * w = (x + a - 1) / a |
| 1113 | * ------------------- |
| 1114 | * |
| 1115 | * To get limits: |
| 1116 | * |
| 1117 | * x E [1, (2^16 - 1) * (2^8 - 1)] |
| 1118 | * |
| 1119 | * Substituting maximum x to the original formula (with rounding), |
| 1120 | * the maximum l is thus |
| 1121 | * |
| 1122 | * (2^16 - 1) * (2^8 - 1) * 10^6 = l * e + 10^6 - 1 |
| 1123 | * |
| 1124 | * l = (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / e |
| 1125 | * -------------------------------------------------- |
| 1126 | * |
| 1127 | * flash_strobe_length must be clamped between 1 and |
| 1128 | * (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / EXTCLK freq. |
| 1129 | * |
| 1130 | * Then, |
| 1131 | * |
| 1132 | * flash_strobe_adjustment = ((flash_strobe_length * |
| 1133 | * EXTCLK freq + 10^6 - 1) / 10^6 + (2^16 - 1) - 1) / (2^16 - 1) |
| 1134 | * |
| 1135 | * tFlash_strobe_width_ctrl = ((flash_strobe_length * |
| 1136 | * EXTCLK freq + 10^6 - 1) / 10^6 + |
| 1137 | * flash_strobe_adjustment - 1) / flash_strobe_adjustment |
| 1138 | */ |
| 1139 | tmp = div_u64(1000000ULL * ((1 << 16) - 1) * ((1 << 8) - 1) - |
| 1140 | 1000000 + 1, ext_freq); |
| 1141 | strobe_setup->strobe_width_high_us = |
| 1142 | clamp_t(u32, strobe_setup->strobe_width_high_us, 1, tmp); |
| 1143 | |
| 1144 | tmp = div_u64(((u64)strobe_setup->strobe_width_high_us * (u64)ext_freq + |
| 1145 | 1000000 - 1), 1000000ULL); |
| 1146 | strobe_adjustment = (tmp + (1 << 16) - 1 - 1) / ((1 << 16) - 1); |
| 1147 | strobe_width_high_rs = (tmp + strobe_adjustment - 1) / |
| 1148 | strobe_adjustment; |
| 1149 | |
| 1150 | rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_MODE_RS, |
| 1151 | strobe_setup->mode); |
| 1152 | if (rval < 0) |
| 1153 | goto out; |
| 1154 | |
| 1155 | rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_STROBE_ADJUSTMENT, |
| 1156 | strobe_adjustment); |
| 1157 | if (rval < 0) |
| 1158 | goto out; |
| 1159 | |
| 1160 | rval = smiapp_write( |
| 1161 | sensor, SMIAPP_REG_U16_TFLASH_STROBE_WIDTH_HIGH_RS_CTRL, |
| 1162 | strobe_width_high_rs); |
| 1163 | if (rval < 0) |
| 1164 | goto out; |
| 1165 | |
| 1166 | rval = smiapp_write(sensor, SMIAPP_REG_U16_TFLASH_STROBE_DELAY_RS_CTRL, |
| 1167 | strobe_setup->strobe_delay); |
| 1168 | if (rval < 0) |
| 1169 | goto out; |
| 1170 | |
| 1171 | rval = smiapp_write(sensor, SMIAPP_REG_U16_FLASH_STROBE_START_POINT, |
| 1172 | strobe_setup->stobe_start_point); |
| 1173 | if (rval < 0) |
| 1174 | goto out; |
| 1175 | |
| 1176 | rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_TRIGGER_RS, |
| 1177 | strobe_setup->trigger); |
| 1178 | |
| 1179 | out: |
| 1180 | sensor->platform_data->strobe_setup->trigger = 0; |
| 1181 | |
| 1182 | return rval; |
| 1183 | } |
| 1184 | |
| 1185 | /* ----------------------------------------------------------------------------- |
| 1186 | * Power management |
| 1187 | */ |
| 1188 | |
| 1189 | static int smiapp_power_on(struct smiapp_sensor *sensor) |
| 1190 | { |
| 1191 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 1192 | unsigned int sleep; |
| 1193 | int rval; |
| 1194 | |
| 1195 | rval = regulator_enable(sensor->vana); |
| 1196 | if (rval) { |
| 1197 | dev_err(&client->dev, "failed to enable vana regulator\n"); |
| 1198 | return rval; |
| 1199 | } |
| 1200 | usleep_range(1000, 1000); |
| 1201 | |
| 1202 | if (sensor->platform_data->set_xclk) |
| 1203 | rval = sensor->platform_data->set_xclk( |
| 1204 | &sensor->src->sd, sensor->platform_data->ext_clk); |
| 1205 | else |
| 1206 | rval = clk_prepare_enable(sensor->ext_clk); |
| 1207 | if (rval < 0) { |
| 1208 | dev_dbg(&client->dev, "failed to enable xclk\n"); |
| 1209 | goto out_xclk_fail; |
| 1210 | } |
| 1211 | usleep_range(1000, 1000); |
| 1212 | |
| 1213 | if (gpio_is_valid(sensor->platform_data->xshutdown)) |
| 1214 | gpio_set_value(sensor->platform_data->xshutdown, 1); |
| 1215 | |
| 1216 | sleep = SMIAPP_RESET_DELAY(sensor->platform_data->ext_clk); |
| 1217 | usleep_range(sleep, sleep); |
| 1218 | |
| 1219 | /* |
| 1220 | * Failures to respond to the address change command have been noticed. |
| 1221 | * Those failures seem to be caused by the sensor requiring a longer |
| 1222 | * boot time than advertised. An additional 10ms delay seems to work |
| 1223 | * around the issue, but the SMIA++ I2C write retry hack makes the delay |
| 1224 | * unnecessary. The failures need to be investigated to find a proper |
| 1225 | * fix, and a delay will likely need to be added here if the I2C write |
| 1226 | * retry hack is reverted before the root cause of the boot time issue |
| 1227 | * is found. |
| 1228 | */ |
| 1229 | |
| 1230 | if (sensor->platform_data->i2c_addr_alt) { |
| 1231 | rval = smiapp_change_cci_addr(sensor); |
| 1232 | if (rval) { |
| 1233 | dev_err(&client->dev, "cci address change error\n"); |
| 1234 | goto out_cci_addr_fail; |
| 1235 | } |
| 1236 | } |
| 1237 | |
| 1238 | rval = smiapp_write(sensor, SMIAPP_REG_U8_SOFTWARE_RESET, |
| 1239 | SMIAPP_SOFTWARE_RESET); |
| 1240 | if (rval < 0) { |
| 1241 | dev_err(&client->dev, "software reset failed\n"); |
| 1242 | goto out_cci_addr_fail; |
| 1243 | } |
| 1244 | |
| 1245 | if (sensor->platform_data->i2c_addr_alt) { |
| 1246 | rval = smiapp_change_cci_addr(sensor); |
| 1247 | if (rval) { |
| 1248 | dev_err(&client->dev, "cci address change error\n"); |
| 1249 | goto out_cci_addr_fail; |
| 1250 | } |
| 1251 | } |
| 1252 | |
| 1253 | rval = smiapp_write(sensor, SMIAPP_REG_U16_COMPRESSION_MODE, |
| 1254 | SMIAPP_COMPRESSION_MODE_SIMPLE_PREDICTOR); |
| 1255 | if (rval) { |
| 1256 | dev_err(&client->dev, "compression mode set failed\n"); |
| 1257 | goto out_cci_addr_fail; |
| 1258 | } |
| 1259 | |
| 1260 | rval = smiapp_write( |
| 1261 | sensor, SMIAPP_REG_U16_EXTCLK_FREQUENCY_MHZ, |
| 1262 | sensor->platform_data->ext_clk / (1000000 / (1 << 8))); |
| 1263 | if (rval) { |
| 1264 | dev_err(&client->dev, "extclk frequency set failed\n"); |
| 1265 | goto out_cci_addr_fail; |
| 1266 | } |
| 1267 | |
| 1268 | rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_LANE_MODE, |
| 1269 | sensor->platform_data->lanes - 1); |
| 1270 | if (rval) { |
| 1271 | dev_err(&client->dev, "csi lane mode set failed\n"); |
| 1272 | goto out_cci_addr_fail; |
| 1273 | } |
| 1274 | |
| 1275 | rval = smiapp_write(sensor, SMIAPP_REG_U8_FAST_STANDBY_CTRL, |
| 1276 | SMIAPP_FAST_STANDBY_CTRL_IMMEDIATE); |
| 1277 | if (rval) { |
| 1278 | dev_err(&client->dev, "fast standby set failed\n"); |
| 1279 | goto out_cci_addr_fail; |
| 1280 | } |
| 1281 | |
| 1282 | rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_SIGNALLING_MODE, |
| 1283 | sensor->platform_data->csi_signalling_mode); |
| 1284 | if (rval) { |
| 1285 | dev_err(&client->dev, "csi signalling mode set failed\n"); |
| 1286 | goto out_cci_addr_fail; |
| 1287 | } |
| 1288 | |
| 1289 | /* DPHY control done by sensor based on requested link rate */ |
| 1290 | rval = smiapp_write(sensor, SMIAPP_REG_U8_DPHY_CTRL, |
| 1291 | SMIAPP_DPHY_CTRL_UI); |
| 1292 | if (rval < 0) |
| 1293 | return rval; |
| 1294 | |
| 1295 | rval = smiapp_call_quirk(sensor, post_poweron); |
| 1296 | if (rval) { |
| 1297 | dev_err(&client->dev, "post_poweron quirks failed\n"); |
| 1298 | goto out_cci_addr_fail; |
| 1299 | } |
| 1300 | |
| 1301 | /* Are we still initialising...? If yes, return here. */ |
| 1302 | if (!sensor->pixel_array) |
| 1303 | return 0; |
| 1304 | |
| 1305 | rval = v4l2_ctrl_handler_setup( |
| 1306 | &sensor->pixel_array->ctrl_handler); |
| 1307 | if (rval) |
| 1308 | goto out_cci_addr_fail; |
| 1309 | |
| 1310 | rval = v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler); |
| 1311 | if (rval) |
| 1312 | goto out_cci_addr_fail; |
| 1313 | |
| 1314 | mutex_lock(&sensor->mutex); |
| 1315 | rval = smiapp_update_mode(sensor); |
| 1316 | mutex_unlock(&sensor->mutex); |
| 1317 | if (rval < 0) |
| 1318 | goto out_cci_addr_fail; |
| 1319 | |
| 1320 | return 0; |
| 1321 | |
| 1322 | out_cci_addr_fail: |
| 1323 | if (gpio_is_valid(sensor->platform_data->xshutdown)) |
| 1324 | gpio_set_value(sensor->platform_data->xshutdown, 0); |
| 1325 | if (sensor->platform_data->set_xclk) |
| 1326 | sensor->platform_data->set_xclk(&sensor->src->sd, 0); |
| 1327 | else |
| 1328 | clk_disable_unprepare(sensor->ext_clk); |
| 1329 | |
| 1330 | out_xclk_fail: |
| 1331 | regulator_disable(sensor->vana); |
| 1332 | return rval; |
| 1333 | } |
| 1334 | |
| 1335 | static void smiapp_power_off(struct smiapp_sensor *sensor) |
| 1336 | { |
| 1337 | /* |
| 1338 | * Currently power/clock to lens are enable/disabled separately |
| 1339 | * but they are essentially the same signals. So if the sensor is |
| 1340 | * powered off while the lens is powered on the sensor does not |
| 1341 | * really see a power off and next time the cci address change |
| 1342 | * will fail. So do a soft reset explicitly here. |
| 1343 | */ |
| 1344 | if (sensor->platform_data->i2c_addr_alt) |
| 1345 | smiapp_write(sensor, |
| 1346 | SMIAPP_REG_U8_SOFTWARE_RESET, |
| 1347 | SMIAPP_SOFTWARE_RESET); |
| 1348 | |
| 1349 | if (gpio_is_valid(sensor->platform_data->xshutdown)) |
| 1350 | gpio_set_value(sensor->platform_data->xshutdown, 0); |
| 1351 | if (sensor->platform_data->set_xclk) |
| 1352 | sensor->platform_data->set_xclk(&sensor->src->sd, 0); |
| 1353 | else |
| 1354 | clk_disable_unprepare(sensor->ext_clk); |
| 1355 | usleep_range(5000, 5000); |
| 1356 | regulator_disable(sensor->vana); |
| 1357 | sensor->streaming = false; |
| 1358 | } |
| 1359 | |
| 1360 | static int smiapp_set_power(struct v4l2_subdev *subdev, int on) |
| 1361 | { |
| 1362 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1363 | int ret = 0; |
| 1364 | |
| 1365 | mutex_lock(&sensor->power_mutex); |
| 1366 | |
| 1367 | if (on && !sensor->power_count) { |
| 1368 | /* Power on and perform initialisation. */ |
| 1369 | ret = smiapp_power_on(sensor); |
| 1370 | if (ret < 0) |
| 1371 | goto out; |
| 1372 | } else if (!on && sensor->power_count == 1) { |
| 1373 | smiapp_power_off(sensor); |
| 1374 | } |
| 1375 | |
| 1376 | /* Update the power count. */ |
| 1377 | sensor->power_count += on ? 1 : -1; |
| 1378 | WARN_ON(sensor->power_count < 0); |
| 1379 | |
| 1380 | out: |
| 1381 | mutex_unlock(&sensor->power_mutex); |
| 1382 | return ret; |
| 1383 | } |
| 1384 | |
| 1385 | /* ----------------------------------------------------------------------------- |
| 1386 | * Video stream management |
| 1387 | */ |
| 1388 | |
| 1389 | static int smiapp_start_streaming(struct smiapp_sensor *sensor) |
| 1390 | { |
| 1391 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 1392 | int rval; |
| 1393 | |
| 1394 | mutex_lock(&sensor->mutex); |
| 1395 | |
| 1396 | rval = smiapp_write(sensor, SMIAPP_REG_U16_CSI_DATA_FORMAT, |
| 1397 | (sensor->csi_format->width << 8) | |
| 1398 | sensor->csi_format->compressed); |
| 1399 | if (rval) |
| 1400 | goto out; |
| 1401 | |
| 1402 | rval = smiapp_pll_configure(sensor); |
| 1403 | if (rval) |
| 1404 | goto out; |
| 1405 | |
| 1406 | /* Analog crop start coordinates */ |
| 1407 | rval = smiapp_write(sensor, SMIAPP_REG_U16_X_ADDR_START, |
| 1408 | sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left); |
| 1409 | if (rval < 0) |
| 1410 | goto out; |
| 1411 | |
| 1412 | rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_ADDR_START, |
| 1413 | sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top); |
| 1414 | if (rval < 0) |
| 1415 | goto out; |
| 1416 | |
| 1417 | /* Analog crop end coordinates */ |
| 1418 | rval = smiapp_write( |
| 1419 | sensor, SMIAPP_REG_U16_X_ADDR_END, |
| 1420 | sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left |
| 1421 | + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width - 1); |
| 1422 | if (rval < 0) |
| 1423 | goto out; |
| 1424 | |
| 1425 | rval = smiapp_write( |
| 1426 | sensor, SMIAPP_REG_U16_Y_ADDR_END, |
| 1427 | sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top |
| 1428 | + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height - 1); |
| 1429 | if (rval < 0) |
| 1430 | goto out; |
| 1431 | |
| 1432 | /* |
| 1433 | * Output from pixel array, including blanking, is set using |
| 1434 | * controls below. No need to set here. |
| 1435 | */ |
| 1436 | |
| 1437 | /* Digital crop */ |
| 1438 | if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY] |
| 1439 | == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) { |
| 1440 | rval = smiapp_write( |
| 1441 | sensor, SMIAPP_REG_U16_DIGITAL_CROP_X_OFFSET, |
| 1442 | sensor->scaler->crop[SMIAPP_PAD_SINK].left); |
| 1443 | if (rval < 0) |
| 1444 | goto out; |
| 1445 | |
| 1446 | rval = smiapp_write( |
| 1447 | sensor, SMIAPP_REG_U16_DIGITAL_CROP_Y_OFFSET, |
| 1448 | sensor->scaler->crop[SMIAPP_PAD_SINK].top); |
| 1449 | if (rval < 0) |
| 1450 | goto out; |
| 1451 | |
| 1452 | rval = smiapp_write( |
| 1453 | sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_WIDTH, |
| 1454 | sensor->scaler->crop[SMIAPP_PAD_SINK].width); |
| 1455 | if (rval < 0) |
| 1456 | goto out; |
| 1457 | |
| 1458 | rval = smiapp_write( |
| 1459 | sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_HEIGHT, |
| 1460 | sensor->scaler->crop[SMIAPP_PAD_SINK].height); |
| 1461 | if (rval < 0) |
| 1462 | goto out; |
| 1463 | } |
| 1464 | |
| 1465 | /* Scaling */ |
| 1466 | if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY] |
| 1467 | != SMIAPP_SCALING_CAPABILITY_NONE) { |
| 1468 | rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALING_MODE, |
| 1469 | sensor->scaling_mode); |
| 1470 | if (rval < 0) |
| 1471 | goto out; |
| 1472 | |
| 1473 | rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALE_M, |
| 1474 | sensor->scale_m); |
| 1475 | if (rval < 0) |
| 1476 | goto out; |
| 1477 | } |
| 1478 | |
| 1479 | /* Output size from sensor */ |
| 1480 | rval = smiapp_write(sensor, SMIAPP_REG_U16_X_OUTPUT_SIZE, |
| 1481 | sensor->src->crop[SMIAPP_PAD_SRC].width); |
| 1482 | if (rval < 0) |
| 1483 | goto out; |
| 1484 | rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_OUTPUT_SIZE, |
| 1485 | sensor->src->crop[SMIAPP_PAD_SRC].height); |
| 1486 | if (rval < 0) |
| 1487 | goto out; |
| 1488 | |
| 1489 | if ((sensor->limits[SMIAPP_LIMIT_FLASH_MODE_CAPABILITY] & |
| 1490 | (SMIAPP_FLASH_MODE_CAPABILITY_SINGLE_STROBE | |
| 1491 | SMIAPP_FLASH_MODE_CAPABILITY_MULTIPLE_STROBE)) && |
| 1492 | sensor->platform_data->strobe_setup != NULL && |
| 1493 | sensor->platform_data->strobe_setup->trigger != 0) { |
| 1494 | rval = smiapp_setup_flash_strobe(sensor); |
| 1495 | if (rval) |
| 1496 | goto out; |
| 1497 | } |
| 1498 | |
| 1499 | rval = smiapp_call_quirk(sensor, pre_streamon); |
| 1500 | if (rval) { |
| 1501 | dev_err(&client->dev, "pre_streamon quirks failed\n"); |
| 1502 | goto out; |
| 1503 | } |
| 1504 | |
| 1505 | rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT, |
| 1506 | SMIAPP_MODE_SELECT_STREAMING); |
| 1507 | |
| 1508 | out: |
| 1509 | mutex_unlock(&sensor->mutex); |
| 1510 | |
| 1511 | return rval; |
| 1512 | } |
| 1513 | |
| 1514 | static int smiapp_stop_streaming(struct smiapp_sensor *sensor) |
| 1515 | { |
| 1516 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 1517 | int rval; |
| 1518 | |
| 1519 | mutex_lock(&sensor->mutex); |
| 1520 | rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT, |
| 1521 | SMIAPP_MODE_SELECT_SOFTWARE_STANDBY); |
| 1522 | if (rval) |
| 1523 | goto out; |
| 1524 | |
| 1525 | rval = smiapp_call_quirk(sensor, post_streamoff); |
| 1526 | if (rval) |
| 1527 | dev_err(&client->dev, "post_streamoff quirks failed\n"); |
| 1528 | |
| 1529 | out: |
| 1530 | mutex_unlock(&sensor->mutex); |
| 1531 | return rval; |
| 1532 | } |
| 1533 | |
| 1534 | /* ----------------------------------------------------------------------------- |
| 1535 | * V4L2 subdev video operations |
| 1536 | */ |
| 1537 | |
| 1538 | static int smiapp_set_stream(struct v4l2_subdev *subdev, int enable) |
| 1539 | { |
| 1540 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1541 | int rval; |
| 1542 | |
| 1543 | if (sensor->streaming == enable) |
| 1544 | return 0; |
| 1545 | |
| 1546 | if (enable) { |
| 1547 | sensor->streaming = true; |
| 1548 | rval = smiapp_start_streaming(sensor); |
| 1549 | if (rval < 0) |
| 1550 | sensor->streaming = false; |
| 1551 | } else { |
| 1552 | rval = smiapp_stop_streaming(sensor); |
| 1553 | sensor->streaming = false; |
| 1554 | } |
| 1555 | |
| 1556 | return rval; |
| 1557 | } |
| 1558 | |
| 1559 | static int smiapp_enum_mbus_code(struct v4l2_subdev *subdev, |
| 1560 | struct v4l2_subdev_pad_config *cfg, |
| 1561 | struct v4l2_subdev_mbus_code_enum *code) |
| 1562 | { |
| 1563 | struct i2c_client *client = v4l2_get_subdevdata(subdev); |
| 1564 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1565 | unsigned int i; |
| 1566 | int idx = -1; |
| 1567 | int rval = -EINVAL; |
| 1568 | |
| 1569 | mutex_lock(&sensor->mutex); |
| 1570 | |
| 1571 | dev_err(&client->dev, "subdev %s, pad %d, index %d\n", |
| 1572 | subdev->name, code->pad, code->index); |
| 1573 | |
| 1574 | if (subdev != &sensor->src->sd || code->pad != SMIAPP_PAD_SRC) { |
| 1575 | if (code->index) |
| 1576 | goto out; |
| 1577 | |
| 1578 | code->code = sensor->internal_csi_format->code; |
| 1579 | rval = 0; |
| 1580 | goto out; |
| 1581 | } |
| 1582 | |
| 1583 | for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) { |
| 1584 | if (sensor->mbus_frame_fmts & (1 << i)) |
| 1585 | idx++; |
| 1586 | |
| 1587 | if (idx == code->index) { |
| 1588 | code->code = smiapp_csi_data_formats[i].code; |
| 1589 | dev_err(&client->dev, "found index %d, i %d, code %x\n", |
| 1590 | code->index, i, code->code); |
| 1591 | rval = 0; |
| 1592 | break; |
| 1593 | } |
| 1594 | } |
| 1595 | |
| 1596 | out: |
| 1597 | mutex_unlock(&sensor->mutex); |
| 1598 | |
| 1599 | return rval; |
| 1600 | } |
| 1601 | |
| 1602 | static u32 __smiapp_get_mbus_code(struct v4l2_subdev *subdev, |
| 1603 | unsigned int pad) |
| 1604 | { |
| 1605 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1606 | |
| 1607 | if (subdev == &sensor->src->sd && pad == SMIAPP_PAD_SRC) |
| 1608 | return sensor->csi_format->code; |
| 1609 | else |
| 1610 | return sensor->internal_csi_format->code; |
| 1611 | } |
| 1612 | |
| 1613 | static int __smiapp_get_format(struct v4l2_subdev *subdev, |
| 1614 | struct v4l2_subdev_pad_config *cfg, |
| 1615 | struct v4l2_subdev_format *fmt) |
| 1616 | { |
| 1617 | struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); |
| 1618 | |
| 1619 | if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
| 1620 | fmt->format = *v4l2_subdev_get_try_format(subdev, cfg, fmt->pad); |
| 1621 | } else { |
| 1622 | struct v4l2_rect *r; |
| 1623 | |
| 1624 | if (fmt->pad == ssd->source_pad) |
| 1625 | r = &ssd->crop[ssd->source_pad]; |
| 1626 | else |
| 1627 | r = &ssd->sink_fmt; |
| 1628 | |
| 1629 | fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad); |
| 1630 | fmt->format.width = r->width; |
| 1631 | fmt->format.height = r->height; |
| 1632 | fmt->format.field = V4L2_FIELD_NONE; |
| 1633 | } |
| 1634 | |
| 1635 | return 0; |
| 1636 | } |
| 1637 | |
| 1638 | static int smiapp_get_format(struct v4l2_subdev *subdev, |
| 1639 | struct v4l2_subdev_pad_config *cfg, |
| 1640 | struct v4l2_subdev_format *fmt) |
| 1641 | { |
| 1642 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1643 | int rval; |
| 1644 | |
| 1645 | mutex_lock(&sensor->mutex); |
| 1646 | rval = __smiapp_get_format(subdev, cfg, fmt); |
| 1647 | mutex_unlock(&sensor->mutex); |
| 1648 | |
| 1649 | return rval; |
| 1650 | } |
| 1651 | |
| 1652 | static void smiapp_get_crop_compose(struct v4l2_subdev *subdev, |
| 1653 | struct v4l2_subdev_pad_config *cfg, |
| 1654 | struct v4l2_rect **crops, |
| 1655 | struct v4l2_rect **comps, int which) |
| 1656 | { |
| 1657 | struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); |
| 1658 | unsigned int i; |
| 1659 | |
| 1660 | if (which == V4L2_SUBDEV_FORMAT_ACTIVE) { |
| 1661 | if (crops) |
| 1662 | for (i = 0; i < subdev->entity.num_pads; i++) |
| 1663 | crops[i] = &ssd->crop[i]; |
| 1664 | if (comps) |
| 1665 | *comps = &ssd->compose; |
| 1666 | } else { |
| 1667 | if (crops) { |
| 1668 | for (i = 0; i < subdev->entity.num_pads; i++) { |
| 1669 | crops[i] = v4l2_subdev_get_try_crop(subdev, cfg, i); |
| 1670 | BUG_ON(!crops[i]); |
| 1671 | } |
| 1672 | } |
| 1673 | if (comps) { |
| 1674 | *comps = v4l2_subdev_get_try_compose(subdev, cfg, |
| 1675 | SMIAPP_PAD_SINK); |
| 1676 | BUG_ON(!*comps); |
| 1677 | } |
| 1678 | } |
| 1679 | } |
| 1680 | |
| 1681 | /* Changes require propagation only on sink pad. */ |
| 1682 | static void smiapp_propagate(struct v4l2_subdev *subdev, |
| 1683 | struct v4l2_subdev_pad_config *cfg, int which, |
| 1684 | int target) |
| 1685 | { |
| 1686 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1687 | struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); |
| 1688 | struct v4l2_rect *comp, *crops[SMIAPP_PADS]; |
| 1689 | |
| 1690 | smiapp_get_crop_compose(subdev, cfg, crops, &comp, which); |
| 1691 | |
| 1692 | switch (target) { |
| 1693 | case V4L2_SEL_TGT_CROP: |
| 1694 | comp->width = crops[SMIAPP_PAD_SINK]->width; |
| 1695 | comp->height = crops[SMIAPP_PAD_SINK]->height; |
| 1696 | if (which == V4L2_SUBDEV_FORMAT_ACTIVE) { |
| 1697 | if (ssd == sensor->scaler) { |
| 1698 | sensor->scale_m = |
| 1699 | sensor->limits[ |
| 1700 | SMIAPP_LIMIT_SCALER_N_MIN]; |
| 1701 | sensor->scaling_mode = |
| 1702 | SMIAPP_SCALING_MODE_NONE; |
| 1703 | } else if (ssd == sensor->binner) { |
| 1704 | sensor->binning_horizontal = 1; |
| 1705 | sensor->binning_vertical = 1; |
| 1706 | } |
| 1707 | } |
| 1708 | /* Fall through */ |
| 1709 | case V4L2_SEL_TGT_COMPOSE: |
| 1710 | *crops[SMIAPP_PAD_SRC] = *comp; |
| 1711 | break; |
| 1712 | default: |
| 1713 | BUG(); |
| 1714 | } |
| 1715 | } |
| 1716 | |
| 1717 | static const struct smiapp_csi_data_format |
| 1718 | *smiapp_validate_csi_data_format(struct smiapp_sensor *sensor, u32 code) |
| 1719 | { |
| 1720 | const struct smiapp_csi_data_format *csi_format = sensor->csi_format; |
| 1721 | unsigned int i; |
| 1722 | |
| 1723 | for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) { |
| 1724 | if (sensor->mbus_frame_fmts & (1 << i) |
| 1725 | && smiapp_csi_data_formats[i].code == code) |
| 1726 | return &smiapp_csi_data_formats[i]; |
| 1727 | } |
| 1728 | |
| 1729 | return csi_format; |
| 1730 | } |
| 1731 | |
| 1732 | static int smiapp_set_format_source(struct v4l2_subdev *subdev, |
| 1733 | struct v4l2_subdev_pad_config *cfg, |
| 1734 | struct v4l2_subdev_format *fmt) |
| 1735 | { |
| 1736 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1737 | const struct smiapp_csi_data_format *csi_format, |
| 1738 | *old_csi_format = sensor->csi_format; |
| 1739 | unsigned long *valid_link_freqs; |
| 1740 | u32 code = fmt->format.code; |
| 1741 | unsigned int i; |
| 1742 | int rval; |
| 1743 | |
| 1744 | rval = __smiapp_get_format(subdev, cfg, fmt); |
| 1745 | if (rval) |
| 1746 | return rval; |
| 1747 | |
| 1748 | /* |
| 1749 | * Media bus code is changeable on src subdev's source pad. On |
| 1750 | * other source pads we just get format here. |
| 1751 | */ |
| 1752 | if (subdev != &sensor->src->sd) |
| 1753 | return 0; |
| 1754 | |
| 1755 | csi_format = smiapp_validate_csi_data_format(sensor, code); |
| 1756 | |
| 1757 | fmt->format.code = csi_format->code; |
| 1758 | |
| 1759 | if (fmt->which != V4L2_SUBDEV_FORMAT_ACTIVE) |
| 1760 | return 0; |
| 1761 | |
| 1762 | sensor->csi_format = csi_format; |
| 1763 | |
| 1764 | if (csi_format->width != old_csi_format->width) |
| 1765 | for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) |
| 1766 | __v4l2_ctrl_modify_range( |
| 1767 | sensor->test_data[i], 0, |
| 1768 | (1 << csi_format->width) - 1, 1, 0); |
| 1769 | |
| 1770 | if (csi_format->compressed == old_csi_format->compressed) |
| 1771 | return 0; |
| 1772 | |
| 1773 | valid_link_freqs = |
| 1774 | &sensor->valid_link_freqs[sensor->csi_format->compressed |
| 1775 | - SMIAPP_COMPRESSED_BASE]; |
| 1776 | |
| 1777 | __v4l2_ctrl_modify_range( |
| 1778 | sensor->link_freq, 0, |
| 1779 | __fls(*valid_link_freqs), ~*valid_link_freqs, |
| 1780 | __ffs(*valid_link_freqs)); |
| 1781 | |
| 1782 | return smiapp_pll_update(sensor); |
| 1783 | } |
| 1784 | |
| 1785 | static int smiapp_set_format(struct v4l2_subdev *subdev, |
| 1786 | struct v4l2_subdev_pad_config *cfg, |
| 1787 | struct v4l2_subdev_format *fmt) |
| 1788 | { |
| 1789 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1790 | struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); |
| 1791 | struct v4l2_rect *crops[SMIAPP_PADS]; |
| 1792 | |
| 1793 | mutex_lock(&sensor->mutex); |
| 1794 | |
| 1795 | if (fmt->pad == ssd->source_pad) { |
| 1796 | int rval; |
| 1797 | |
| 1798 | rval = smiapp_set_format_source(subdev, cfg, fmt); |
| 1799 | |
| 1800 | mutex_unlock(&sensor->mutex); |
| 1801 | |
| 1802 | return rval; |
| 1803 | } |
| 1804 | |
| 1805 | /* Sink pad. Width and height are changeable here. */ |
| 1806 | fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad); |
| 1807 | fmt->format.width &= ~1; |
| 1808 | fmt->format.height &= ~1; |
| 1809 | fmt->format.field = V4L2_FIELD_NONE; |
| 1810 | |
| 1811 | fmt->format.width = |
| 1812 | clamp(fmt->format.width, |
| 1813 | sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE], |
| 1814 | sensor->limits[SMIAPP_LIMIT_MAX_X_OUTPUT_SIZE]); |
| 1815 | fmt->format.height = |
| 1816 | clamp(fmt->format.height, |
| 1817 | sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE], |
| 1818 | sensor->limits[SMIAPP_LIMIT_MAX_Y_OUTPUT_SIZE]); |
| 1819 | |
| 1820 | smiapp_get_crop_compose(subdev, cfg, crops, NULL, fmt->which); |
| 1821 | |
| 1822 | crops[ssd->sink_pad]->left = 0; |
| 1823 | crops[ssd->sink_pad]->top = 0; |
| 1824 | crops[ssd->sink_pad]->width = fmt->format.width; |
| 1825 | crops[ssd->sink_pad]->height = fmt->format.height; |
| 1826 | if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) |
| 1827 | ssd->sink_fmt = *crops[ssd->sink_pad]; |
| 1828 | smiapp_propagate(subdev, cfg, fmt->which, |
| 1829 | V4L2_SEL_TGT_CROP); |
| 1830 | |
| 1831 | mutex_unlock(&sensor->mutex); |
| 1832 | |
| 1833 | return 0; |
| 1834 | } |
| 1835 | |
| 1836 | /* |
| 1837 | * Calculate goodness of scaled image size compared to expected image |
| 1838 | * size and flags provided. |
| 1839 | */ |
| 1840 | #define SCALING_GOODNESS 100000 |
| 1841 | #define SCALING_GOODNESS_EXTREME 100000000 |
| 1842 | static int scaling_goodness(struct v4l2_subdev *subdev, int w, int ask_w, |
| 1843 | int h, int ask_h, u32 flags) |
| 1844 | { |
| 1845 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1846 | struct i2c_client *client = v4l2_get_subdevdata(subdev); |
| 1847 | int val = 0; |
| 1848 | |
| 1849 | w &= ~1; |
| 1850 | ask_w &= ~1; |
| 1851 | h &= ~1; |
| 1852 | ask_h &= ~1; |
| 1853 | |
| 1854 | if (flags & V4L2_SEL_FLAG_GE) { |
| 1855 | if (w < ask_w) |
| 1856 | val -= SCALING_GOODNESS; |
| 1857 | if (h < ask_h) |
| 1858 | val -= SCALING_GOODNESS; |
| 1859 | } |
| 1860 | |
| 1861 | if (flags & V4L2_SEL_FLAG_LE) { |
| 1862 | if (w > ask_w) |
| 1863 | val -= SCALING_GOODNESS; |
| 1864 | if (h > ask_h) |
| 1865 | val -= SCALING_GOODNESS; |
| 1866 | } |
| 1867 | |
| 1868 | val -= abs(w - ask_w); |
| 1869 | val -= abs(h - ask_h); |
| 1870 | |
| 1871 | if (w < sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE]) |
| 1872 | val -= SCALING_GOODNESS_EXTREME; |
| 1873 | |
| 1874 | dev_dbg(&client->dev, "w %d ask_w %d h %d ask_h %d goodness %d\n", |
| 1875 | w, ask_h, h, ask_h, val); |
| 1876 | |
| 1877 | return val; |
| 1878 | } |
| 1879 | |
| 1880 | static void smiapp_set_compose_binner(struct v4l2_subdev *subdev, |
| 1881 | struct v4l2_subdev_pad_config *cfg, |
| 1882 | struct v4l2_subdev_selection *sel, |
| 1883 | struct v4l2_rect **crops, |
| 1884 | struct v4l2_rect *comp) |
| 1885 | { |
| 1886 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1887 | unsigned int i; |
| 1888 | unsigned int binh = 1, binv = 1; |
| 1889 | int best = scaling_goodness( |
| 1890 | subdev, |
| 1891 | crops[SMIAPP_PAD_SINK]->width, sel->r.width, |
| 1892 | crops[SMIAPP_PAD_SINK]->height, sel->r.height, sel->flags); |
| 1893 | |
| 1894 | for (i = 0; i < sensor->nbinning_subtypes; i++) { |
| 1895 | int this = scaling_goodness( |
| 1896 | subdev, |
| 1897 | crops[SMIAPP_PAD_SINK]->width |
| 1898 | / sensor->binning_subtypes[i].horizontal, |
| 1899 | sel->r.width, |
| 1900 | crops[SMIAPP_PAD_SINK]->height |
| 1901 | / sensor->binning_subtypes[i].vertical, |
| 1902 | sel->r.height, sel->flags); |
| 1903 | |
| 1904 | if (this > best) { |
| 1905 | binh = sensor->binning_subtypes[i].horizontal; |
| 1906 | binv = sensor->binning_subtypes[i].vertical; |
| 1907 | best = this; |
| 1908 | } |
| 1909 | } |
| 1910 | if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { |
| 1911 | sensor->binning_vertical = binv; |
| 1912 | sensor->binning_horizontal = binh; |
| 1913 | } |
| 1914 | |
| 1915 | sel->r.width = (crops[SMIAPP_PAD_SINK]->width / binh) & ~1; |
| 1916 | sel->r.height = (crops[SMIAPP_PAD_SINK]->height / binv) & ~1; |
| 1917 | } |
| 1918 | |
| 1919 | /* |
| 1920 | * Calculate best scaling ratio and mode for given output resolution. |
| 1921 | * |
| 1922 | * Try all of these: horizontal ratio, vertical ratio and smallest |
| 1923 | * size possible (horizontally). |
| 1924 | * |
| 1925 | * Also try whether horizontal scaler or full scaler gives a better |
| 1926 | * result. |
| 1927 | */ |
| 1928 | static void smiapp_set_compose_scaler(struct v4l2_subdev *subdev, |
| 1929 | struct v4l2_subdev_pad_config *cfg, |
| 1930 | struct v4l2_subdev_selection *sel, |
| 1931 | struct v4l2_rect **crops, |
| 1932 | struct v4l2_rect *comp) |
| 1933 | { |
| 1934 | struct i2c_client *client = v4l2_get_subdevdata(subdev); |
| 1935 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 1936 | u32 min, max, a, b, max_m; |
| 1937 | u32 scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]; |
| 1938 | int mode = SMIAPP_SCALING_MODE_HORIZONTAL; |
| 1939 | u32 try[4]; |
| 1940 | u32 ntry = 0; |
| 1941 | unsigned int i; |
| 1942 | int best = INT_MIN; |
| 1943 | |
| 1944 | sel->r.width = min_t(unsigned int, sel->r.width, |
| 1945 | crops[SMIAPP_PAD_SINK]->width); |
| 1946 | sel->r.height = min_t(unsigned int, sel->r.height, |
| 1947 | crops[SMIAPP_PAD_SINK]->height); |
| 1948 | |
| 1949 | a = crops[SMIAPP_PAD_SINK]->width |
| 1950 | * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.width; |
| 1951 | b = crops[SMIAPP_PAD_SINK]->height |
| 1952 | * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.height; |
| 1953 | max_m = crops[SMIAPP_PAD_SINK]->width |
| 1954 | * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] |
| 1955 | / sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE]; |
| 1956 | |
| 1957 | a = clamp(a, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN], |
| 1958 | sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]); |
| 1959 | b = clamp(b, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN], |
| 1960 | sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]); |
| 1961 | max_m = clamp(max_m, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN], |
| 1962 | sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]); |
| 1963 | |
| 1964 | dev_dbg(&client->dev, "scaling: a %d b %d max_m %d\n", a, b, max_m); |
| 1965 | |
| 1966 | min = min(max_m, min(a, b)); |
| 1967 | max = min(max_m, max(a, b)); |
| 1968 | |
| 1969 | try[ntry] = min; |
| 1970 | ntry++; |
| 1971 | if (min != max) { |
| 1972 | try[ntry] = max; |
| 1973 | ntry++; |
| 1974 | } |
| 1975 | if (max != max_m) { |
| 1976 | try[ntry] = min + 1; |
| 1977 | ntry++; |
| 1978 | if (min != max) { |
| 1979 | try[ntry] = max + 1; |
| 1980 | ntry++; |
| 1981 | } |
| 1982 | } |
| 1983 | |
| 1984 | for (i = 0; i < ntry; i++) { |
| 1985 | int this = scaling_goodness( |
| 1986 | subdev, |
| 1987 | crops[SMIAPP_PAD_SINK]->width |
| 1988 | / try[i] |
| 1989 | * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN], |
| 1990 | sel->r.width, |
| 1991 | crops[SMIAPP_PAD_SINK]->height, |
| 1992 | sel->r.height, |
| 1993 | sel->flags); |
| 1994 | |
| 1995 | dev_dbg(&client->dev, "trying factor %d (%d)\n", try[i], i); |
| 1996 | |
| 1997 | if (this > best) { |
| 1998 | scale_m = try[i]; |
| 1999 | mode = SMIAPP_SCALING_MODE_HORIZONTAL; |
| 2000 | best = this; |
| 2001 | } |
| 2002 | |
| 2003 | if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY] |
| 2004 | == SMIAPP_SCALING_CAPABILITY_HORIZONTAL) |
| 2005 | continue; |
| 2006 | |
| 2007 | this = scaling_goodness( |
| 2008 | subdev, crops[SMIAPP_PAD_SINK]->width |
| 2009 | / try[i] |
| 2010 | * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN], |
| 2011 | sel->r.width, |
| 2012 | crops[SMIAPP_PAD_SINK]->height |
| 2013 | / try[i] |
| 2014 | * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN], |
| 2015 | sel->r.height, |
| 2016 | sel->flags); |
| 2017 | |
| 2018 | if (this > best) { |
| 2019 | scale_m = try[i]; |
| 2020 | mode = SMIAPP_SCALING_MODE_BOTH; |
| 2021 | best = this; |
| 2022 | } |
| 2023 | } |
| 2024 | |
| 2025 | sel->r.width = |
| 2026 | (crops[SMIAPP_PAD_SINK]->width |
| 2027 | / scale_m |
| 2028 | * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]) & ~1; |
| 2029 | if (mode == SMIAPP_SCALING_MODE_BOTH) |
| 2030 | sel->r.height = |
| 2031 | (crops[SMIAPP_PAD_SINK]->height |
| 2032 | / scale_m |
| 2033 | * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]) |
| 2034 | & ~1; |
| 2035 | else |
| 2036 | sel->r.height = crops[SMIAPP_PAD_SINK]->height; |
| 2037 | |
| 2038 | if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { |
| 2039 | sensor->scale_m = scale_m; |
| 2040 | sensor->scaling_mode = mode; |
| 2041 | } |
| 2042 | } |
| 2043 | /* We're only called on source pads. This function sets scaling. */ |
| 2044 | static int smiapp_set_compose(struct v4l2_subdev *subdev, |
| 2045 | struct v4l2_subdev_pad_config *cfg, |
| 2046 | struct v4l2_subdev_selection *sel) |
| 2047 | { |
| 2048 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2049 | struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); |
| 2050 | struct v4l2_rect *comp, *crops[SMIAPP_PADS]; |
| 2051 | |
| 2052 | smiapp_get_crop_compose(subdev, cfg, crops, &comp, sel->which); |
| 2053 | |
| 2054 | sel->r.top = 0; |
| 2055 | sel->r.left = 0; |
| 2056 | |
| 2057 | if (ssd == sensor->binner) |
| 2058 | smiapp_set_compose_binner(subdev, cfg, sel, crops, comp); |
| 2059 | else |
| 2060 | smiapp_set_compose_scaler(subdev, cfg, sel, crops, comp); |
| 2061 | |
| 2062 | *comp = sel->r; |
| 2063 | smiapp_propagate(subdev, cfg, sel->which, |
| 2064 | V4L2_SEL_TGT_COMPOSE); |
| 2065 | |
| 2066 | if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) |
| 2067 | return smiapp_update_mode(sensor); |
| 2068 | |
| 2069 | return 0; |
| 2070 | } |
| 2071 | |
| 2072 | static int __smiapp_sel_supported(struct v4l2_subdev *subdev, |
| 2073 | struct v4l2_subdev_selection *sel) |
| 2074 | { |
| 2075 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2076 | struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); |
| 2077 | |
| 2078 | /* We only implement crop in three places. */ |
| 2079 | switch (sel->target) { |
| 2080 | case V4L2_SEL_TGT_CROP: |
| 2081 | case V4L2_SEL_TGT_CROP_BOUNDS: |
| 2082 | if (ssd == sensor->pixel_array |
| 2083 | && sel->pad == SMIAPP_PA_PAD_SRC) |
| 2084 | return 0; |
| 2085 | if (ssd == sensor->src |
| 2086 | && sel->pad == SMIAPP_PAD_SRC) |
| 2087 | return 0; |
| 2088 | if (ssd == sensor->scaler |
| 2089 | && sel->pad == SMIAPP_PAD_SINK |
| 2090 | && sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY] |
| 2091 | == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) |
| 2092 | return 0; |
| 2093 | return -EINVAL; |
| 2094 | case V4L2_SEL_TGT_NATIVE_SIZE: |
| 2095 | if (ssd == sensor->pixel_array |
| 2096 | && sel->pad == SMIAPP_PA_PAD_SRC) |
| 2097 | return 0; |
| 2098 | return -EINVAL; |
| 2099 | case V4L2_SEL_TGT_COMPOSE: |
| 2100 | case V4L2_SEL_TGT_COMPOSE_BOUNDS: |
| 2101 | if (sel->pad == ssd->source_pad) |
| 2102 | return -EINVAL; |
| 2103 | if (ssd == sensor->binner) |
| 2104 | return 0; |
| 2105 | if (ssd == sensor->scaler |
| 2106 | && sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY] |
| 2107 | != SMIAPP_SCALING_CAPABILITY_NONE) |
| 2108 | return 0; |
| 2109 | /* Fall through */ |
| 2110 | default: |
| 2111 | return -EINVAL; |
| 2112 | } |
| 2113 | } |
| 2114 | |
| 2115 | static int smiapp_set_crop(struct v4l2_subdev *subdev, |
| 2116 | struct v4l2_subdev_pad_config *cfg, |
| 2117 | struct v4l2_subdev_selection *sel) |
| 2118 | { |
| 2119 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2120 | struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); |
| 2121 | struct v4l2_rect *src_size, *crops[SMIAPP_PADS]; |
| 2122 | struct v4l2_rect _r; |
| 2123 | |
| 2124 | smiapp_get_crop_compose(subdev, cfg, crops, NULL, sel->which); |
| 2125 | |
| 2126 | if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { |
| 2127 | if (sel->pad == ssd->sink_pad) |
| 2128 | src_size = &ssd->sink_fmt; |
| 2129 | else |
| 2130 | src_size = &ssd->compose; |
| 2131 | } else { |
| 2132 | if (sel->pad == ssd->sink_pad) { |
| 2133 | _r.left = 0; |
| 2134 | _r.top = 0; |
| 2135 | _r.width = v4l2_subdev_get_try_format(subdev, cfg, sel->pad) |
| 2136 | ->width; |
| 2137 | _r.height = v4l2_subdev_get_try_format(subdev, cfg, sel->pad) |
| 2138 | ->height; |
| 2139 | src_size = &_r; |
| 2140 | } else { |
| 2141 | src_size = |
| 2142 | v4l2_subdev_get_try_compose( |
| 2143 | subdev, cfg, ssd->sink_pad); |
| 2144 | } |
| 2145 | } |
| 2146 | |
| 2147 | if (ssd == sensor->src && sel->pad == SMIAPP_PAD_SRC) { |
| 2148 | sel->r.left = 0; |
| 2149 | sel->r.top = 0; |
| 2150 | } |
| 2151 | |
| 2152 | sel->r.width = min(sel->r.width, src_size->width); |
| 2153 | sel->r.height = min(sel->r.height, src_size->height); |
| 2154 | |
| 2155 | sel->r.left = min_t(int, sel->r.left, src_size->width - sel->r.width); |
| 2156 | sel->r.top = min_t(int, sel->r.top, src_size->height - sel->r.height); |
| 2157 | |
| 2158 | *crops[sel->pad] = sel->r; |
| 2159 | |
| 2160 | if (ssd != sensor->pixel_array && sel->pad == SMIAPP_PAD_SINK) |
| 2161 | smiapp_propagate(subdev, cfg, sel->which, |
| 2162 | V4L2_SEL_TGT_CROP); |
| 2163 | |
| 2164 | return 0; |
| 2165 | } |
| 2166 | |
| 2167 | static int __smiapp_get_selection(struct v4l2_subdev *subdev, |
| 2168 | struct v4l2_subdev_pad_config *cfg, |
| 2169 | struct v4l2_subdev_selection *sel) |
| 2170 | { |
| 2171 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2172 | struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); |
| 2173 | struct v4l2_rect *comp, *crops[SMIAPP_PADS]; |
| 2174 | struct v4l2_rect sink_fmt; |
| 2175 | int ret; |
| 2176 | |
| 2177 | ret = __smiapp_sel_supported(subdev, sel); |
| 2178 | if (ret) |
| 2179 | return ret; |
| 2180 | |
| 2181 | smiapp_get_crop_compose(subdev, cfg, crops, &comp, sel->which); |
| 2182 | |
| 2183 | if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { |
| 2184 | sink_fmt = ssd->sink_fmt; |
| 2185 | } else { |
| 2186 | struct v4l2_mbus_framefmt *fmt = |
| 2187 | v4l2_subdev_get_try_format(subdev, cfg, ssd->sink_pad); |
| 2188 | |
| 2189 | sink_fmt.left = 0; |
| 2190 | sink_fmt.top = 0; |
| 2191 | sink_fmt.width = fmt->width; |
| 2192 | sink_fmt.height = fmt->height; |
| 2193 | } |
| 2194 | |
| 2195 | switch (sel->target) { |
| 2196 | case V4L2_SEL_TGT_CROP_BOUNDS: |
| 2197 | case V4L2_SEL_TGT_NATIVE_SIZE: |
| 2198 | if (ssd == sensor->pixel_array) { |
| 2199 | sel->r.left = sel->r.top = 0; |
| 2200 | sel->r.width = |
| 2201 | sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1; |
| 2202 | sel->r.height = |
| 2203 | sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1; |
| 2204 | } else if (sel->pad == ssd->sink_pad) { |
| 2205 | sel->r = sink_fmt; |
| 2206 | } else { |
| 2207 | sel->r = *comp; |
| 2208 | } |
| 2209 | break; |
| 2210 | case V4L2_SEL_TGT_CROP: |
| 2211 | case V4L2_SEL_TGT_COMPOSE_BOUNDS: |
| 2212 | sel->r = *crops[sel->pad]; |
| 2213 | break; |
| 2214 | case V4L2_SEL_TGT_COMPOSE: |
| 2215 | sel->r = *comp; |
| 2216 | break; |
| 2217 | } |
| 2218 | |
| 2219 | return 0; |
| 2220 | } |
| 2221 | |
| 2222 | static int smiapp_get_selection(struct v4l2_subdev *subdev, |
| 2223 | struct v4l2_subdev_pad_config *cfg, |
| 2224 | struct v4l2_subdev_selection *sel) |
| 2225 | { |
| 2226 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2227 | int rval; |
| 2228 | |
| 2229 | mutex_lock(&sensor->mutex); |
| 2230 | rval = __smiapp_get_selection(subdev, cfg, sel); |
| 2231 | mutex_unlock(&sensor->mutex); |
| 2232 | |
| 2233 | return rval; |
| 2234 | } |
| 2235 | static int smiapp_set_selection(struct v4l2_subdev *subdev, |
| 2236 | struct v4l2_subdev_pad_config *cfg, |
| 2237 | struct v4l2_subdev_selection *sel) |
| 2238 | { |
| 2239 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2240 | int ret; |
| 2241 | |
| 2242 | ret = __smiapp_sel_supported(subdev, sel); |
| 2243 | if (ret) |
| 2244 | return ret; |
| 2245 | |
| 2246 | mutex_lock(&sensor->mutex); |
| 2247 | |
| 2248 | sel->r.left = max(0, sel->r.left & ~1); |
| 2249 | sel->r.top = max(0, sel->r.top & ~1); |
| 2250 | sel->r.width = SMIAPP_ALIGN_DIM(sel->r.width, sel->flags); |
| 2251 | sel->r.height = SMIAPP_ALIGN_DIM(sel->r.height, sel->flags); |
| 2252 | |
| 2253 | sel->r.width = max_t(unsigned int, |
| 2254 | sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE], |
| 2255 | sel->r.width); |
| 2256 | sel->r.height = max_t(unsigned int, |
| 2257 | sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE], |
| 2258 | sel->r.height); |
| 2259 | |
| 2260 | switch (sel->target) { |
| 2261 | case V4L2_SEL_TGT_CROP: |
| 2262 | ret = smiapp_set_crop(subdev, cfg, sel); |
| 2263 | break; |
| 2264 | case V4L2_SEL_TGT_COMPOSE: |
| 2265 | ret = smiapp_set_compose(subdev, cfg, sel); |
| 2266 | break; |
| 2267 | default: |
| 2268 | ret = -EINVAL; |
| 2269 | } |
| 2270 | |
| 2271 | mutex_unlock(&sensor->mutex); |
| 2272 | return ret; |
| 2273 | } |
| 2274 | |
| 2275 | static int smiapp_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames) |
| 2276 | { |
| 2277 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2278 | |
| 2279 | *frames = sensor->frame_skip; |
| 2280 | return 0; |
| 2281 | } |
| 2282 | |
| 2283 | /* ----------------------------------------------------------------------------- |
| 2284 | * sysfs attributes |
| 2285 | */ |
| 2286 | |
| 2287 | static ssize_t |
| 2288 | smiapp_sysfs_nvm_read(struct device *dev, struct device_attribute *attr, |
| 2289 | char *buf) |
| 2290 | { |
| 2291 | struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev)); |
| 2292 | struct i2c_client *client = v4l2_get_subdevdata(subdev); |
| 2293 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2294 | unsigned int nbytes; |
| 2295 | |
| 2296 | if (!sensor->dev_init_done) |
| 2297 | return -EBUSY; |
| 2298 | |
| 2299 | if (!sensor->nvm_size) { |
| 2300 | /* NVM not read yet - read it now */ |
| 2301 | sensor->nvm_size = sensor->platform_data->nvm_size; |
| 2302 | if (smiapp_set_power(subdev, 1) < 0) |
| 2303 | return -ENODEV; |
| 2304 | if (smiapp_read_nvm(sensor, sensor->nvm)) { |
| 2305 | dev_err(&client->dev, "nvm read failed\n"); |
| 2306 | return -ENODEV; |
| 2307 | } |
| 2308 | smiapp_set_power(subdev, 0); |
| 2309 | } |
| 2310 | /* |
| 2311 | * NVM is still way below a PAGE_SIZE, so we can safely |
| 2312 | * assume this for now. |
| 2313 | */ |
| 2314 | nbytes = min_t(unsigned int, sensor->nvm_size, PAGE_SIZE); |
| 2315 | memcpy(buf, sensor->nvm, nbytes); |
| 2316 | |
| 2317 | return nbytes; |
| 2318 | } |
| 2319 | static DEVICE_ATTR(nvm, S_IRUGO, smiapp_sysfs_nvm_read, NULL); |
| 2320 | |
| 2321 | static ssize_t |
| 2322 | smiapp_sysfs_ident_read(struct device *dev, struct device_attribute *attr, |
| 2323 | char *buf) |
| 2324 | { |
| 2325 | struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev)); |
| 2326 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2327 | struct smiapp_module_info *minfo = &sensor->minfo; |
| 2328 | |
| 2329 | return snprintf(buf, PAGE_SIZE, "%2.2x%4.4x%2.2x\n", |
| 2330 | minfo->manufacturer_id, minfo->model_id, |
| 2331 | minfo->revision_number_major) + 1; |
| 2332 | } |
| 2333 | |
| 2334 | static DEVICE_ATTR(ident, S_IRUGO, smiapp_sysfs_ident_read, NULL); |
| 2335 | |
| 2336 | /* ----------------------------------------------------------------------------- |
| 2337 | * V4L2 subdev core operations |
| 2338 | */ |
| 2339 | |
| 2340 | static int smiapp_identify_module(struct smiapp_sensor *sensor) |
| 2341 | { |
| 2342 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 2343 | struct smiapp_module_info *minfo = &sensor->minfo; |
| 2344 | unsigned int i; |
| 2345 | int rval = 0; |
| 2346 | |
| 2347 | minfo->name = SMIAPP_NAME; |
| 2348 | |
| 2349 | /* Module info */ |
| 2350 | rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MANUFACTURER_ID, |
| 2351 | &minfo->manufacturer_id); |
| 2352 | if (!rval) |
| 2353 | rval = smiapp_read_8only(sensor, SMIAPP_REG_U16_MODEL_ID, |
| 2354 | &minfo->model_id); |
| 2355 | if (!rval) |
| 2356 | rval = smiapp_read_8only(sensor, |
| 2357 | SMIAPP_REG_U8_REVISION_NUMBER_MAJOR, |
| 2358 | &minfo->revision_number_major); |
| 2359 | if (!rval) |
| 2360 | rval = smiapp_read_8only(sensor, |
| 2361 | SMIAPP_REG_U8_REVISION_NUMBER_MINOR, |
| 2362 | &minfo->revision_number_minor); |
| 2363 | if (!rval) |
| 2364 | rval = smiapp_read_8only(sensor, |
| 2365 | SMIAPP_REG_U8_MODULE_DATE_YEAR, |
| 2366 | &minfo->module_year); |
| 2367 | if (!rval) |
| 2368 | rval = smiapp_read_8only(sensor, |
| 2369 | SMIAPP_REG_U8_MODULE_DATE_MONTH, |
| 2370 | &minfo->module_month); |
| 2371 | if (!rval) |
| 2372 | rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MODULE_DATE_DAY, |
| 2373 | &minfo->module_day); |
| 2374 | |
| 2375 | /* Sensor info */ |
| 2376 | if (!rval) |
| 2377 | rval = smiapp_read_8only(sensor, |
| 2378 | SMIAPP_REG_U8_SENSOR_MANUFACTURER_ID, |
| 2379 | &minfo->sensor_manufacturer_id); |
| 2380 | if (!rval) |
| 2381 | rval = smiapp_read_8only(sensor, |
| 2382 | SMIAPP_REG_U16_SENSOR_MODEL_ID, |
| 2383 | &minfo->sensor_model_id); |
| 2384 | if (!rval) |
| 2385 | rval = smiapp_read_8only(sensor, |
| 2386 | SMIAPP_REG_U8_SENSOR_REVISION_NUMBER, |
| 2387 | &minfo->sensor_revision_number); |
| 2388 | if (!rval) |
| 2389 | rval = smiapp_read_8only(sensor, |
| 2390 | SMIAPP_REG_U8_SENSOR_FIRMWARE_VERSION, |
| 2391 | &minfo->sensor_firmware_version); |
| 2392 | |
| 2393 | /* SMIA */ |
| 2394 | if (!rval) |
| 2395 | rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIA_VERSION, |
| 2396 | &minfo->smia_version); |
| 2397 | if (!rval) |
| 2398 | rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIAPP_VERSION, |
| 2399 | &minfo->smiapp_version); |
| 2400 | |
| 2401 | if (rval) { |
| 2402 | dev_err(&client->dev, "sensor detection failed\n"); |
| 2403 | return -ENODEV; |
| 2404 | } |
| 2405 | |
| 2406 | dev_dbg(&client->dev, "module 0x%2.2x-0x%4.4x\n", |
| 2407 | minfo->manufacturer_id, minfo->model_id); |
| 2408 | |
| 2409 | dev_dbg(&client->dev, |
| 2410 | "module revision 0x%2.2x-0x%2.2x date %2.2d-%2.2d-%2.2d\n", |
| 2411 | minfo->revision_number_major, minfo->revision_number_minor, |
| 2412 | minfo->module_year, minfo->module_month, minfo->module_day); |
| 2413 | |
| 2414 | dev_dbg(&client->dev, "sensor 0x%2.2x-0x%4.4x\n", |
| 2415 | minfo->sensor_manufacturer_id, minfo->sensor_model_id); |
| 2416 | |
| 2417 | dev_dbg(&client->dev, |
| 2418 | "sensor revision 0x%2.2x firmware version 0x%2.2x\n", |
| 2419 | minfo->sensor_revision_number, minfo->sensor_firmware_version); |
| 2420 | |
| 2421 | dev_dbg(&client->dev, "smia version %2.2d smiapp version %2.2d\n", |
| 2422 | minfo->smia_version, minfo->smiapp_version); |
| 2423 | |
| 2424 | /* |
| 2425 | * Some modules have bad data in the lvalues below. Hope the |
| 2426 | * rvalues have better stuff. The lvalues are module |
| 2427 | * parameters whereas the rvalues are sensor parameters. |
| 2428 | */ |
| 2429 | if (!minfo->manufacturer_id && !minfo->model_id) { |
| 2430 | minfo->manufacturer_id = minfo->sensor_manufacturer_id; |
| 2431 | minfo->model_id = minfo->sensor_model_id; |
| 2432 | minfo->revision_number_major = minfo->sensor_revision_number; |
| 2433 | } |
| 2434 | |
| 2435 | for (i = 0; i < ARRAY_SIZE(smiapp_module_idents); i++) { |
| 2436 | if (smiapp_module_idents[i].manufacturer_id |
| 2437 | != minfo->manufacturer_id) |
| 2438 | continue; |
| 2439 | if (smiapp_module_idents[i].model_id != minfo->model_id) |
| 2440 | continue; |
| 2441 | if (smiapp_module_idents[i].flags |
| 2442 | & SMIAPP_MODULE_IDENT_FLAG_REV_LE) { |
| 2443 | if (smiapp_module_idents[i].revision_number_major |
| 2444 | < minfo->revision_number_major) |
| 2445 | continue; |
| 2446 | } else { |
| 2447 | if (smiapp_module_idents[i].revision_number_major |
| 2448 | != minfo->revision_number_major) |
| 2449 | continue; |
| 2450 | } |
| 2451 | |
| 2452 | minfo->name = smiapp_module_idents[i].name; |
| 2453 | minfo->quirk = smiapp_module_idents[i].quirk; |
| 2454 | break; |
| 2455 | } |
| 2456 | |
| 2457 | if (i >= ARRAY_SIZE(smiapp_module_idents)) |
| 2458 | dev_warn(&client->dev, |
| 2459 | "no quirks for this module; let's hope it's fully compliant\n"); |
| 2460 | |
| 2461 | dev_dbg(&client->dev, "the sensor is called %s, ident %2.2x%4.4x%2.2x\n", |
| 2462 | minfo->name, minfo->manufacturer_id, minfo->model_id, |
| 2463 | minfo->revision_number_major); |
| 2464 | |
| 2465 | return 0; |
| 2466 | } |
| 2467 | |
| 2468 | static const struct v4l2_subdev_ops smiapp_ops; |
| 2469 | static const struct v4l2_subdev_internal_ops smiapp_internal_ops; |
| 2470 | static const struct media_entity_operations smiapp_entity_ops; |
| 2471 | |
| 2472 | static int smiapp_register_subdevs(struct smiapp_sensor *sensor) |
| 2473 | { |
| 2474 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 2475 | struct smiapp_subdev *ssds[] = { |
| 2476 | sensor->scaler, |
| 2477 | sensor->binner, |
| 2478 | sensor->pixel_array, |
| 2479 | }; |
| 2480 | unsigned int i; |
| 2481 | int rval; |
| 2482 | |
| 2483 | for (i = 0; i < SMIAPP_SUBDEVS - 1; i++) { |
| 2484 | struct smiapp_subdev *this = ssds[i + 1]; |
| 2485 | struct smiapp_subdev *last = ssds[i]; |
| 2486 | |
| 2487 | if (!last) |
| 2488 | continue; |
| 2489 | |
| 2490 | rval = media_entity_init(&this->sd.entity, |
| 2491 | this->npads, this->pads, 0); |
| 2492 | if (rval) { |
| 2493 | dev_err(&client->dev, |
| 2494 | "media_entity_init failed\n"); |
| 2495 | return rval; |
| 2496 | } |
| 2497 | |
| 2498 | rval = media_entity_create_link(&this->sd.entity, |
| 2499 | this->source_pad, |
| 2500 | &last->sd.entity, |
| 2501 | last->sink_pad, |
| 2502 | MEDIA_LNK_FL_ENABLED | |
| 2503 | MEDIA_LNK_FL_IMMUTABLE); |
| 2504 | if (rval) { |
| 2505 | dev_err(&client->dev, |
| 2506 | "media_entity_create_link failed\n"); |
| 2507 | return rval; |
| 2508 | } |
| 2509 | |
| 2510 | rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev, |
| 2511 | &this->sd); |
| 2512 | if (rval) { |
| 2513 | dev_err(&client->dev, |
| 2514 | "v4l2_device_register_subdev failed\n"); |
| 2515 | return rval; |
| 2516 | } |
| 2517 | } |
| 2518 | |
| 2519 | return 0; |
| 2520 | } |
| 2521 | |
| 2522 | static void smiapp_cleanup(struct smiapp_sensor *sensor) |
| 2523 | { |
| 2524 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 2525 | |
| 2526 | device_remove_file(&client->dev, &dev_attr_nvm); |
| 2527 | device_remove_file(&client->dev, &dev_attr_ident); |
| 2528 | |
| 2529 | smiapp_free_controls(sensor); |
| 2530 | } |
| 2531 | |
| 2532 | static int smiapp_init(struct smiapp_sensor *sensor) |
| 2533 | { |
| 2534 | struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); |
| 2535 | struct smiapp_pll *pll = &sensor->pll; |
| 2536 | struct smiapp_subdev *last = NULL; |
| 2537 | unsigned int i; |
| 2538 | int rval; |
| 2539 | |
| 2540 | sensor->vana = devm_regulator_get(&client->dev, "vana"); |
| 2541 | if (IS_ERR(sensor->vana)) { |
| 2542 | dev_err(&client->dev, "could not get regulator for vana\n"); |
| 2543 | return PTR_ERR(sensor->vana); |
| 2544 | } |
| 2545 | |
| 2546 | if (!sensor->platform_data->set_xclk) { |
| 2547 | sensor->ext_clk = devm_clk_get(&client->dev, NULL); |
| 2548 | if (IS_ERR(sensor->ext_clk)) { |
| 2549 | dev_err(&client->dev, "could not get clock\n"); |
| 2550 | return PTR_ERR(sensor->ext_clk); |
| 2551 | } |
| 2552 | |
| 2553 | rval = clk_set_rate(sensor->ext_clk, |
| 2554 | sensor->platform_data->ext_clk); |
| 2555 | if (rval < 0) { |
| 2556 | dev_err(&client->dev, |
| 2557 | "unable to set clock freq to %u\n", |
| 2558 | sensor->platform_data->ext_clk); |
| 2559 | return rval; |
| 2560 | } |
| 2561 | } |
| 2562 | |
| 2563 | if (gpio_is_valid(sensor->platform_data->xshutdown)) { |
| 2564 | rval = devm_gpio_request_one( |
| 2565 | &client->dev, sensor->platform_data->xshutdown, 0, |
| 2566 | "SMIA++ xshutdown"); |
| 2567 | if (rval < 0) { |
| 2568 | dev_err(&client->dev, |
| 2569 | "unable to acquire reset gpio %d\n", |
| 2570 | sensor->platform_data->xshutdown); |
| 2571 | return rval; |
| 2572 | } |
| 2573 | } |
| 2574 | |
| 2575 | rval = smiapp_power_on(sensor); |
| 2576 | if (rval) |
| 2577 | return -ENODEV; |
| 2578 | |
| 2579 | rval = smiapp_identify_module(sensor); |
| 2580 | if (rval) { |
| 2581 | rval = -ENODEV; |
| 2582 | goto out_power_off; |
| 2583 | } |
| 2584 | |
| 2585 | rval = smiapp_get_all_limits(sensor); |
| 2586 | if (rval) { |
| 2587 | rval = -ENODEV; |
| 2588 | goto out_power_off; |
| 2589 | } |
| 2590 | |
| 2591 | /* |
| 2592 | * Handle Sensor Module orientation on the board. |
| 2593 | * |
| 2594 | * The application of H-FLIP and V-FLIP on the sensor is modified by |
| 2595 | * the sensor orientation on the board. |
| 2596 | * |
| 2597 | * For SMIAPP_BOARD_SENSOR_ORIENT_180 the default behaviour is to set |
| 2598 | * both H-FLIP and V-FLIP for normal operation which also implies |
| 2599 | * that a set/unset operation for user space HFLIP and VFLIP v4l2 |
| 2600 | * controls will need to be internally inverted. |
| 2601 | * |
| 2602 | * Rotation also changes the bayer pattern. |
| 2603 | */ |
| 2604 | if (sensor->platform_data->module_board_orient == |
| 2605 | SMIAPP_MODULE_BOARD_ORIENT_180) |
| 2606 | sensor->hvflip_inv_mask = SMIAPP_IMAGE_ORIENTATION_HFLIP | |
| 2607 | SMIAPP_IMAGE_ORIENTATION_VFLIP; |
| 2608 | |
| 2609 | rval = smiapp_call_quirk(sensor, limits); |
| 2610 | if (rval) { |
| 2611 | dev_err(&client->dev, "limits quirks failed\n"); |
| 2612 | goto out_power_off; |
| 2613 | } |
| 2614 | |
| 2615 | if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY]) { |
| 2616 | u32 val; |
| 2617 | |
| 2618 | rval = smiapp_read(sensor, |
| 2619 | SMIAPP_REG_U8_BINNING_SUBTYPES, &val); |
| 2620 | if (rval < 0) { |
| 2621 | rval = -ENODEV; |
| 2622 | goto out_power_off; |
| 2623 | } |
| 2624 | sensor->nbinning_subtypes = min_t(u8, val, |
| 2625 | SMIAPP_BINNING_SUBTYPES); |
| 2626 | |
| 2627 | for (i = 0; i < sensor->nbinning_subtypes; i++) { |
| 2628 | rval = smiapp_read( |
| 2629 | sensor, SMIAPP_REG_U8_BINNING_TYPE_n(i), &val); |
| 2630 | if (rval < 0) { |
| 2631 | rval = -ENODEV; |
| 2632 | goto out_power_off; |
| 2633 | } |
| 2634 | sensor->binning_subtypes[i] = |
| 2635 | *(struct smiapp_binning_subtype *)&val; |
| 2636 | |
| 2637 | dev_dbg(&client->dev, "binning %xx%x\n", |
| 2638 | sensor->binning_subtypes[i].horizontal, |
| 2639 | sensor->binning_subtypes[i].vertical); |
| 2640 | } |
| 2641 | } |
| 2642 | sensor->binning_horizontal = 1; |
| 2643 | sensor->binning_vertical = 1; |
| 2644 | |
| 2645 | if (device_create_file(&client->dev, &dev_attr_ident) != 0) { |
| 2646 | dev_err(&client->dev, "sysfs ident entry creation failed\n"); |
| 2647 | rval = -ENOENT; |
| 2648 | goto out_power_off; |
| 2649 | } |
| 2650 | /* SMIA++ NVM initialization - it will be read from the sensor |
| 2651 | * when it is first requested by userspace. |
| 2652 | */ |
| 2653 | if (sensor->minfo.smiapp_version && sensor->platform_data->nvm_size) { |
| 2654 | sensor->nvm = devm_kzalloc(&client->dev, |
| 2655 | sensor->platform_data->nvm_size, GFP_KERNEL); |
| 2656 | if (sensor->nvm == NULL) { |
| 2657 | dev_err(&client->dev, "nvm buf allocation failed\n"); |
| 2658 | rval = -ENOMEM; |
| 2659 | goto out_cleanup; |
| 2660 | } |
| 2661 | |
| 2662 | if (device_create_file(&client->dev, &dev_attr_nvm) != 0) { |
| 2663 | dev_err(&client->dev, "sysfs nvm entry failed\n"); |
| 2664 | rval = -EBUSY; |
| 2665 | goto out_cleanup; |
| 2666 | } |
| 2667 | } |
| 2668 | |
| 2669 | /* We consider this as profile 0 sensor if any of these are zero. */ |
| 2670 | if (!sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV] || |
| 2671 | !sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV] || |
| 2672 | !sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV] || |
| 2673 | !sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV]) { |
| 2674 | sensor->minfo.smiapp_profile = SMIAPP_PROFILE_0; |
| 2675 | } else if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY] |
| 2676 | != SMIAPP_SCALING_CAPABILITY_NONE) { |
| 2677 | if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY] |
| 2678 | == SMIAPP_SCALING_CAPABILITY_HORIZONTAL) |
| 2679 | sensor->minfo.smiapp_profile = SMIAPP_PROFILE_1; |
| 2680 | else |
| 2681 | sensor->minfo.smiapp_profile = SMIAPP_PROFILE_2; |
| 2682 | sensor->scaler = &sensor->ssds[sensor->ssds_used]; |
| 2683 | sensor->ssds_used++; |
| 2684 | } else if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY] |
| 2685 | == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) { |
| 2686 | sensor->scaler = &sensor->ssds[sensor->ssds_used]; |
| 2687 | sensor->ssds_used++; |
| 2688 | } |
| 2689 | sensor->binner = &sensor->ssds[sensor->ssds_used]; |
| 2690 | sensor->ssds_used++; |
| 2691 | sensor->pixel_array = &sensor->ssds[sensor->ssds_used]; |
| 2692 | sensor->ssds_used++; |
| 2693 | |
| 2694 | sensor->scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]; |
| 2695 | |
| 2696 | /* prepare PLL configuration input values */ |
| 2697 | pll->bus_type = SMIAPP_PLL_BUS_TYPE_CSI2; |
| 2698 | pll->csi2.lanes = sensor->platform_data->lanes; |
| 2699 | pll->ext_clk_freq_hz = sensor->platform_data->ext_clk; |
| 2700 | pll->scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]; |
| 2701 | /* Profile 0 sensors have no separate OP clock branch. */ |
| 2702 | if (sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0) |
| 2703 | pll->flags |= SMIAPP_PLL_FLAG_NO_OP_CLOCKS; |
| 2704 | |
| 2705 | for (i = 0; i < SMIAPP_SUBDEVS; i++) { |
| 2706 | struct { |
| 2707 | struct smiapp_subdev *ssd; |
| 2708 | char *name; |
| 2709 | } const __this[] = { |
| 2710 | { sensor->scaler, "scaler", }, |
| 2711 | { sensor->binner, "binner", }, |
| 2712 | { sensor->pixel_array, "pixel array", }, |
| 2713 | }, *_this = &__this[i]; |
| 2714 | struct smiapp_subdev *this = _this->ssd; |
| 2715 | |
| 2716 | if (!this) |
| 2717 | continue; |
| 2718 | |
| 2719 | if (this != sensor->src) |
| 2720 | v4l2_subdev_init(&this->sd, &smiapp_ops); |
| 2721 | |
| 2722 | this->sensor = sensor; |
| 2723 | |
| 2724 | if (this == sensor->pixel_array) { |
| 2725 | this->npads = 1; |
| 2726 | } else { |
| 2727 | this->npads = 2; |
| 2728 | this->source_pad = 1; |
| 2729 | } |
| 2730 | |
| 2731 | snprintf(this->sd.name, |
| 2732 | sizeof(this->sd.name), "%s %s %d-%4.4x", |
| 2733 | sensor->minfo.name, _this->name, |
| 2734 | i2c_adapter_id(client->adapter), client->addr); |
| 2735 | |
| 2736 | this->sink_fmt.width = |
| 2737 | sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1; |
| 2738 | this->sink_fmt.height = |
| 2739 | sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1; |
| 2740 | this->compose.width = this->sink_fmt.width; |
| 2741 | this->compose.height = this->sink_fmt.height; |
| 2742 | this->crop[this->source_pad] = this->compose; |
| 2743 | this->pads[this->source_pad].flags = MEDIA_PAD_FL_SOURCE; |
| 2744 | if (this != sensor->pixel_array) { |
| 2745 | this->crop[this->sink_pad] = this->compose; |
| 2746 | this->pads[this->sink_pad].flags = MEDIA_PAD_FL_SINK; |
| 2747 | } |
| 2748 | |
| 2749 | this->sd.entity.ops = &smiapp_entity_ops; |
| 2750 | |
| 2751 | if (last == NULL) { |
| 2752 | last = this; |
| 2753 | continue; |
| 2754 | } |
| 2755 | |
| 2756 | this->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; |
| 2757 | this->sd.internal_ops = &smiapp_internal_ops; |
| 2758 | this->sd.owner = THIS_MODULE; |
| 2759 | v4l2_set_subdevdata(&this->sd, client); |
| 2760 | |
| 2761 | last = this; |
| 2762 | } |
| 2763 | |
| 2764 | dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile); |
| 2765 | |
| 2766 | sensor->pixel_array->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; |
| 2767 | |
| 2768 | /* final steps */ |
| 2769 | smiapp_read_frame_fmt(sensor); |
| 2770 | rval = smiapp_init_controls(sensor); |
| 2771 | if (rval < 0) |
| 2772 | goto out_cleanup; |
| 2773 | |
| 2774 | rval = smiapp_call_quirk(sensor, init); |
| 2775 | if (rval) |
| 2776 | goto out_cleanup; |
| 2777 | |
| 2778 | rval = smiapp_get_mbus_formats(sensor); |
| 2779 | if (rval) { |
| 2780 | rval = -ENODEV; |
| 2781 | goto out_cleanup; |
| 2782 | } |
| 2783 | |
| 2784 | rval = smiapp_init_late_controls(sensor); |
| 2785 | if (rval) { |
| 2786 | rval = -ENODEV; |
| 2787 | goto out_cleanup; |
| 2788 | } |
| 2789 | |
| 2790 | mutex_lock(&sensor->mutex); |
| 2791 | rval = smiapp_update_mode(sensor); |
| 2792 | mutex_unlock(&sensor->mutex); |
| 2793 | if (rval) { |
| 2794 | dev_err(&client->dev, "update mode failed\n"); |
| 2795 | goto out_cleanup; |
| 2796 | } |
| 2797 | |
| 2798 | sensor->streaming = false; |
| 2799 | sensor->dev_init_done = true; |
| 2800 | |
| 2801 | smiapp_power_off(sensor); |
| 2802 | |
| 2803 | return 0; |
| 2804 | |
| 2805 | out_cleanup: |
| 2806 | smiapp_cleanup(sensor); |
| 2807 | |
| 2808 | out_power_off: |
| 2809 | smiapp_power_off(sensor); |
| 2810 | return rval; |
| 2811 | } |
| 2812 | |
| 2813 | static int smiapp_registered(struct v4l2_subdev *subdev) |
| 2814 | { |
| 2815 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2816 | struct i2c_client *client = v4l2_get_subdevdata(subdev); |
| 2817 | int rval; |
| 2818 | |
| 2819 | if (!client->dev.of_node) { |
| 2820 | rval = smiapp_init(sensor); |
| 2821 | if (rval) |
| 2822 | return rval; |
| 2823 | } |
| 2824 | |
| 2825 | rval = smiapp_register_subdevs(sensor); |
| 2826 | if (rval) |
| 2827 | smiapp_cleanup(sensor); |
| 2828 | |
| 2829 | return rval; |
| 2830 | } |
| 2831 | |
| 2832 | static int smiapp_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) |
| 2833 | { |
| 2834 | struct smiapp_subdev *ssd = to_smiapp_subdev(sd); |
| 2835 | struct smiapp_sensor *sensor = ssd->sensor; |
| 2836 | u32 mbus_code = |
| 2837 | smiapp_csi_data_formats[smiapp_pixel_order(sensor)].code; |
| 2838 | unsigned int i; |
| 2839 | |
| 2840 | mutex_lock(&sensor->mutex); |
| 2841 | |
| 2842 | for (i = 0; i < ssd->npads; i++) { |
| 2843 | struct v4l2_mbus_framefmt *try_fmt = |
| 2844 | v4l2_subdev_get_try_format(sd, fh->pad, i); |
| 2845 | struct v4l2_rect *try_crop = v4l2_subdev_get_try_crop(sd, fh->pad, i); |
| 2846 | struct v4l2_rect *try_comp; |
| 2847 | |
| 2848 | try_fmt->width = sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1; |
| 2849 | try_fmt->height = sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1; |
| 2850 | try_fmt->code = mbus_code; |
| 2851 | try_fmt->field = V4L2_FIELD_NONE; |
| 2852 | |
| 2853 | try_crop->top = 0; |
| 2854 | try_crop->left = 0; |
| 2855 | try_crop->width = try_fmt->width; |
| 2856 | try_crop->height = try_fmt->height; |
| 2857 | |
| 2858 | if (ssd != sensor->pixel_array) |
| 2859 | continue; |
| 2860 | |
| 2861 | try_comp = v4l2_subdev_get_try_compose(sd, fh->pad, i); |
| 2862 | *try_comp = *try_crop; |
| 2863 | } |
| 2864 | |
| 2865 | mutex_unlock(&sensor->mutex); |
| 2866 | |
| 2867 | return smiapp_set_power(sd, 1); |
| 2868 | } |
| 2869 | |
| 2870 | static int smiapp_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) |
| 2871 | { |
| 2872 | return smiapp_set_power(sd, 0); |
| 2873 | } |
| 2874 | |
| 2875 | static const struct v4l2_subdev_video_ops smiapp_video_ops = { |
| 2876 | .s_stream = smiapp_set_stream, |
| 2877 | }; |
| 2878 | |
| 2879 | static const struct v4l2_subdev_core_ops smiapp_core_ops = { |
| 2880 | .s_power = smiapp_set_power, |
| 2881 | }; |
| 2882 | |
| 2883 | static const struct v4l2_subdev_pad_ops smiapp_pad_ops = { |
| 2884 | .enum_mbus_code = smiapp_enum_mbus_code, |
| 2885 | .get_fmt = smiapp_get_format, |
| 2886 | .set_fmt = smiapp_set_format, |
| 2887 | .get_selection = smiapp_get_selection, |
| 2888 | .set_selection = smiapp_set_selection, |
| 2889 | }; |
| 2890 | |
| 2891 | static const struct v4l2_subdev_sensor_ops smiapp_sensor_ops = { |
| 2892 | .g_skip_frames = smiapp_get_skip_frames, |
| 2893 | }; |
| 2894 | |
| 2895 | static const struct v4l2_subdev_ops smiapp_ops = { |
| 2896 | .core = &smiapp_core_ops, |
| 2897 | .video = &smiapp_video_ops, |
| 2898 | .pad = &smiapp_pad_ops, |
| 2899 | .sensor = &smiapp_sensor_ops, |
| 2900 | }; |
| 2901 | |
| 2902 | static const struct media_entity_operations smiapp_entity_ops = { |
| 2903 | .link_validate = v4l2_subdev_link_validate, |
| 2904 | }; |
| 2905 | |
| 2906 | static const struct v4l2_subdev_internal_ops smiapp_internal_src_ops = { |
| 2907 | .registered = smiapp_registered, |
| 2908 | .open = smiapp_open, |
| 2909 | .close = smiapp_close, |
| 2910 | }; |
| 2911 | |
| 2912 | static const struct v4l2_subdev_internal_ops smiapp_internal_ops = { |
| 2913 | .open = smiapp_open, |
| 2914 | .close = smiapp_close, |
| 2915 | }; |
| 2916 | |
| 2917 | /* ----------------------------------------------------------------------------- |
| 2918 | * I2C Driver |
| 2919 | */ |
| 2920 | |
| 2921 | #ifdef CONFIG_PM |
| 2922 | |
| 2923 | static int smiapp_suspend(struct device *dev) |
| 2924 | { |
| 2925 | struct i2c_client *client = to_i2c_client(dev); |
| 2926 | struct v4l2_subdev *subdev = i2c_get_clientdata(client); |
| 2927 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2928 | bool streaming; |
| 2929 | |
| 2930 | BUG_ON(mutex_is_locked(&sensor->mutex)); |
| 2931 | |
| 2932 | if (sensor->power_count == 0) |
| 2933 | return 0; |
| 2934 | |
| 2935 | if (sensor->streaming) |
| 2936 | smiapp_stop_streaming(sensor); |
| 2937 | |
| 2938 | streaming = sensor->streaming; |
| 2939 | |
| 2940 | smiapp_power_off(sensor); |
| 2941 | |
| 2942 | /* save state for resume */ |
| 2943 | sensor->streaming = streaming; |
| 2944 | |
| 2945 | return 0; |
| 2946 | } |
| 2947 | |
| 2948 | static int smiapp_resume(struct device *dev) |
| 2949 | { |
| 2950 | struct i2c_client *client = to_i2c_client(dev); |
| 2951 | struct v4l2_subdev *subdev = i2c_get_clientdata(client); |
| 2952 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 2953 | int rval; |
| 2954 | |
| 2955 | if (sensor->power_count == 0) |
| 2956 | return 0; |
| 2957 | |
| 2958 | rval = smiapp_power_on(sensor); |
| 2959 | if (rval) |
| 2960 | return rval; |
| 2961 | |
| 2962 | if (sensor->streaming) |
| 2963 | rval = smiapp_start_streaming(sensor); |
| 2964 | |
| 2965 | return rval; |
| 2966 | } |
| 2967 | |
| 2968 | #else |
| 2969 | |
| 2970 | #define smiapp_suspend NULL |
| 2971 | #define smiapp_resume NULL |
| 2972 | |
| 2973 | #endif /* CONFIG_PM */ |
| 2974 | |
| 2975 | static struct smiapp_platform_data *smiapp_get_pdata(struct device *dev) |
| 2976 | { |
| 2977 | struct smiapp_platform_data *pdata; |
| 2978 | struct v4l2_of_endpoint *bus_cfg; |
| 2979 | struct device_node *ep; |
| 2980 | int i; |
| 2981 | int rval; |
| 2982 | |
| 2983 | if (!dev->of_node) |
| 2984 | return dev->platform_data; |
| 2985 | |
| 2986 | ep = of_graph_get_next_endpoint(dev->of_node, NULL); |
| 2987 | if (!ep) |
| 2988 | return NULL; |
| 2989 | |
| 2990 | bus_cfg = v4l2_of_alloc_parse_endpoint(ep); |
| 2991 | if (IS_ERR(bus_cfg)) |
| 2992 | goto out_err; |
| 2993 | |
| 2994 | pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); |
| 2995 | if (!pdata) |
| 2996 | goto out_err; |
| 2997 | |
| 2998 | switch (bus_cfg->bus_type) { |
| 2999 | case V4L2_MBUS_CSI2: |
| 3000 | pdata->csi_signalling_mode = SMIAPP_CSI_SIGNALLING_MODE_CSI2; |
| 3001 | break; |
| 3002 | /* FIXME: add CCP2 support. */ |
| 3003 | default: |
| 3004 | goto out_err; |
| 3005 | } |
| 3006 | |
| 3007 | pdata->lanes = bus_cfg->bus.mipi_csi2.num_data_lanes; |
| 3008 | dev_dbg(dev, "lanes %u\n", pdata->lanes); |
| 3009 | |
| 3010 | /* xshutdown GPIO is optional */ |
| 3011 | pdata->xshutdown = of_get_named_gpio(dev->of_node, "reset-gpios", 0); |
| 3012 | |
| 3013 | /* NVM size is not mandatory */ |
| 3014 | of_property_read_u32(dev->of_node, "nokia,nvm-size", |
| 3015 | &pdata->nvm_size); |
| 3016 | |
| 3017 | rval = of_property_read_u32(dev->of_node, "clock-frequency", |
| 3018 | &pdata->ext_clk); |
| 3019 | if (rval) { |
| 3020 | dev_warn(dev, "can't get clock-frequency\n"); |
| 3021 | goto out_err; |
| 3022 | } |
| 3023 | |
| 3024 | dev_dbg(dev, "reset %d, nvm %d, clk %d, csi %d\n", pdata->xshutdown, |
| 3025 | pdata->nvm_size, pdata->ext_clk, pdata->csi_signalling_mode); |
| 3026 | |
| 3027 | if (!bus_cfg->nr_of_link_frequencies) { |
| 3028 | dev_warn(dev, "no link frequencies defined\n"); |
| 3029 | goto out_err; |
| 3030 | } |
| 3031 | |
| 3032 | pdata->op_sys_clock = devm_kcalloc( |
| 3033 | dev, bus_cfg->nr_of_link_frequencies + 1 /* guardian */, |
| 3034 | sizeof(*pdata->op_sys_clock), GFP_KERNEL); |
| 3035 | if (!pdata->op_sys_clock) { |
| 3036 | rval = -ENOMEM; |
| 3037 | goto out_err; |
| 3038 | } |
| 3039 | |
| 3040 | for (i = 0; i < bus_cfg->nr_of_link_frequencies; i++) { |
| 3041 | pdata->op_sys_clock[i] = bus_cfg->link_frequencies[i]; |
| 3042 | dev_dbg(dev, "freq %d: %lld\n", i, pdata->op_sys_clock[i]); |
| 3043 | } |
| 3044 | |
| 3045 | v4l2_of_free_endpoint(bus_cfg); |
| 3046 | of_node_put(ep); |
| 3047 | return pdata; |
| 3048 | |
| 3049 | out_err: |
| 3050 | v4l2_of_free_endpoint(bus_cfg); |
| 3051 | of_node_put(ep); |
| 3052 | return NULL; |
| 3053 | } |
| 3054 | |
| 3055 | static int smiapp_probe(struct i2c_client *client, |
| 3056 | const struct i2c_device_id *devid) |
| 3057 | { |
| 3058 | struct smiapp_sensor *sensor; |
| 3059 | struct smiapp_platform_data *pdata = smiapp_get_pdata(&client->dev); |
| 3060 | int rval; |
| 3061 | |
| 3062 | if (pdata == NULL) |
| 3063 | return -ENODEV; |
| 3064 | |
| 3065 | sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL); |
| 3066 | if (sensor == NULL) |
| 3067 | return -ENOMEM; |
| 3068 | |
| 3069 | sensor->platform_data = pdata; |
| 3070 | mutex_init(&sensor->mutex); |
| 3071 | mutex_init(&sensor->power_mutex); |
| 3072 | sensor->src = &sensor->ssds[sensor->ssds_used]; |
| 3073 | |
| 3074 | v4l2_i2c_subdev_init(&sensor->src->sd, client, &smiapp_ops); |
| 3075 | sensor->src->sd.internal_ops = &smiapp_internal_src_ops; |
| 3076 | sensor->src->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; |
| 3077 | sensor->src->sensor = sensor; |
| 3078 | |
| 3079 | sensor->src->pads[0].flags = MEDIA_PAD_FL_SOURCE; |
| 3080 | rval = media_entity_init(&sensor->src->sd.entity, 2, |
| 3081 | sensor->src->pads, 0); |
| 3082 | if (rval < 0) |
| 3083 | return rval; |
| 3084 | |
| 3085 | if (client->dev.of_node) { |
| 3086 | rval = smiapp_init(sensor); |
| 3087 | if (rval) |
| 3088 | goto out_media_entity_cleanup; |
| 3089 | } |
| 3090 | |
| 3091 | rval = v4l2_async_register_subdev(&sensor->src->sd); |
| 3092 | if (rval < 0) |
| 3093 | goto out_media_entity_cleanup; |
| 3094 | |
| 3095 | return 0; |
| 3096 | |
| 3097 | out_media_entity_cleanup: |
| 3098 | media_entity_cleanup(&sensor->src->sd.entity); |
| 3099 | |
| 3100 | return rval; |
| 3101 | } |
| 3102 | |
| 3103 | static int smiapp_remove(struct i2c_client *client) |
| 3104 | { |
| 3105 | struct v4l2_subdev *subdev = i2c_get_clientdata(client); |
| 3106 | struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); |
| 3107 | unsigned int i; |
| 3108 | |
| 3109 | v4l2_async_unregister_subdev(subdev); |
| 3110 | |
| 3111 | if (sensor->power_count) { |
| 3112 | if (gpio_is_valid(sensor->platform_data->xshutdown)) |
| 3113 | gpio_set_value(sensor->platform_data->xshutdown, 0); |
| 3114 | if (sensor->platform_data->set_xclk) |
| 3115 | sensor->platform_data->set_xclk(&sensor->src->sd, 0); |
| 3116 | else |
| 3117 | clk_disable_unprepare(sensor->ext_clk); |
| 3118 | sensor->power_count = 0; |
| 3119 | } |
| 3120 | |
| 3121 | for (i = 0; i < sensor->ssds_used; i++) { |
| 3122 | v4l2_device_unregister_subdev(&sensor->ssds[i].sd); |
| 3123 | media_entity_cleanup(&sensor->ssds[i].sd.entity); |
| 3124 | } |
| 3125 | smiapp_cleanup(sensor); |
| 3126 | |
| 3127 | return 0; |
| 3128 | } |
| 3129 | |
| 3130 | static const struct of_device_id smiapp_of_table[] = { |
| 3131 | { .compatible = "nokia,smia" }, |
| 3132 | { }, |
| 3133 | }; |
| 3134 | MODULE_DEVICE_TABLE(of, smiapp_of_table); |
| 3135 | |
| 3136 | static const struct i2c_device_id smiapp_id_table[] = { |
| 3137 | { SMIAPP_NAME, 0 }, |
| 3138 | { }, |
| 3139 | }; |
| 3140 | MODULE_DEVICE_TABLE(i2c, smiapp_id_table); |
| 3141 | |
| 3142 | static const struct dev_pm_ops smiapp_pm_ops = { |
| 3143 | .suspend = smiapp_suspend, |
| 3144 | .resume = smiapp_resume, |
| 3145 | }; |
| 3146 | |
| 3147 | static struct i2c_driver smiapp_i2c_driver = { |
| 3148 | .driver = { |
| 3149 | .of_match_table = smiapp_of_table, |
| 3150 | .name = SMIAPP_NAME, |
| 3151 | .pm = &smiapp_pm_ops, |
| 3152 | }, |
| 3153 | .probe = smiapp_probe, |
| 3154 | .remove = smiapp_remove, |
| 3155 | .id_table = smiapp_id_table, |
| 3156 | }; |
| 3157 | |
| 3158 | module_i2c_driver(smiapp_i2c_driver); |
| 3159 | |
| 3160 | MODULE_AUTHOR("Sakari Ailus <sakari.ailus@iki.fi>"); |
| 3161 | MODULE_DESCRIPTION("Generic SMIA/SMIA++ camera module driver"); |
| 3162 | MODULE_LICENSE("GPL"); |