/* * drivers/media/i2c/smiapp/smiapp-core.c * * Generic driver for SMIA/SMIA++ compliant camera modules * * Copyright (C) 2010--2012 Nokia Corporation * Contact: Sakari Ailus * * Based on smiapp driver by Vimarsh Zutshi * Based on jt8ev1.c by Vimarsh Zutshi * Based on smia-sensor.c by Tuukka Toivonen * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA * */ #include #include #include #include #include #include #include #include #include #include #include "smiapp.h" #define SMIAPP_ALIGN_DIM(dim, flags) \ ((flags) & V4L2_SEL_FLAG_GE \ ? ALIGN((dim), 2) \ : (dim) & ~1) /* * smiapp_module_idents - supported camera modules */ static const struct smiapp_module_ident smiapp_module_idents[] = { SMIAPP_IDENT_L(0x01, 0x022b, -1, "vs6555"), SMIAPP_IDENT_L(0x01, 0x022e, -1, "vw6558"), SMIAPP_IDENT_L(0x07, 0x7698, -1, "ovm7698"), SMIAPP_IDENT_L(0x0b, 0x4242, -1, "smiapp-003"), SMIAPP_IDENT_L(0x0c, 0x208a, -1, "tcm8330md"), SMIAPP_IDENT_LQ(0x0c, 0x2134, -1, "tcm8500md", &smiapp_tcm8500md_quirk), SMIAPP_IDENT_L(0x0c, 0x213e, -1, "et8en2"), SMIAPP_IDENT_L(0x0c, 0x2184, -1, "tcm8580md"), SMIAPP_IDENT_LQ(0x0c, 0x560f, -1, "jt8ew9", &smiapp_jt8ew9_quirk), SMIAPP_IDENT_LQ(0x10, 0x4141, -1, "jt8ev1", &smiapp_jt8ev1_quirk), SMIAPP_IDENT_LQ(0x10, 0x4241, -1, "imx125es", &smiapp_imx125es_quirk), }; /* * * Dynamic Capability Identification * */ static int smiapp_read_frame_fmt(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); u32 fmt_model_type, fmt_model_subtype, ncol_desc, nrow_desc; unsigned int i; int rval; int line_count = 0; int embedded_start = -1, embedded_end = -1; int image_start = 0; rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_TYPE, &fmt_model_type); if (rval) return rval; rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_SUBTYPE, &fmt_model_subtype); if (rval) return rval; ncol_desc = (fmt_model_subtype & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_MASK) >> SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_SHIFT; nrow_desc = fmt_model_subtype & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NROWS_MASK; dev_dbg(&client->dev, "format_model_type %s\n", fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE ? "2 byte" : fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE ? "4 byte" : "is simply bad"); for (i = 0; i < ncol_desc + nrow_desc; i++) { u32 desc; u32 pixelcode; u32 pixels; char *which; char *what; if (fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE) { rval = smiapp_read( sensor, SMIAPP_REG_U16_FRAME_FORMAT_DESCRIPTOR_2(i), &desc); if (rval) return rval; pixelcode = (desc & SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_MASK) >> SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_SHIFT; pixels = desc & SMIAPP_FRAME_FORMAT_DESC_2_PIXELS_MASK; } else if (fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE) { rval = smiapp_read( sensor, SMIAPP_REG_U32_FRAME_FORMAT_DESCRIPTOR_4(i), &desc); if (rval) return rval; pixelcode = (desc & SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_MASK) >> SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_SHIFT; pixels = desc & SMIAPP_FRAME_FORMAT_DESC_4_PIXELS_MASK; } else { dev_dbg(&client->dev, "invalid frame format model type %d\n", fmt_model_type); return -EINVAL; } if (i < ncol_desc) which = "columns"; else which = "rows"; switch (pixelcode) { case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED: what = "embedded"; break; case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DUMMY: what = "dummy"; break; case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_BLACK: what = "black"; break; case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DARK: what = "dark"; break; case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE: what = "visible"; break; default: what = "invalid"; dev_dbg(&client->dev, "pixelcode %d\n", pixelcode); break; } dev_dbg(&client->dev, "%s pixels: %d %s\n", what, pixels, which); if (i < ncol_desc) continue; /* Handle row descriptors */ if (pixelcode == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED) { embedded_start = line_count; } else { if (pixelcode == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE || pixels >= sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES] / 2) image_start = line_count; if (embedded_start != -1 && embedded_end == -1) embedded_end = line_count; } line_count += pixels; } if (embedded_start == -1 || embedded_end == -1) { embedded_start = 0; embedded_end = 0; } dev_dbg(&client->dev, "embedded data from lines %d to %d\n", embedded_start, embedded_end); dev_dbg(&client->dev, "image data starts at line %d\n", image_start); return 0; } static int smiapp_pll_configure(struct smiapp_sensor *sensor) { struct smiapp_pll *pll = &sensor->pll; int rval; rval = smiapp_write( sensor, SMIAPP_REG_U16_VT_PIX_CLK_DIV, pll->vt_pix_clk_div); if (rval < 0) return rval; rval = smiapp_write( sensor, SMIAPP_REG_U16_VT_SYS_CLK_DIV, pll->vt_sys_clk_div); if (rval < 0) return rval; rval = smiapp_write( sensor, SMIAPP_REG_U16_PRE_PLL_CLK_DIV, pll->pre_pll_clk_div); if (rval < 0) return rval; rval = smiapp_write( sensor, SMIAPP_REG_U16_PLL_MULTIPLIER, pll->pll_multiplier); if (rval < 0) return rval; /* Lane op clock ratio does not apply here. */ rval = smiapp_write( sensor, SMIAPP_REG_U32_REQUESTED_LINK_BIT_RATE_MBPS, DIV_ROUND_UP(pll->op_sys_clk_freq_hz, 1000000 / 256 / 256)); if (rval < 0 || sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0) return rval; rval = smiapp_write( sensor, SMIAPP_REG_U16_OP_PIX_CLK_DIV, pll->op_pix_clk_div); if (rval < 0) return rval; return smiapp_write( sensor, SMIAPP_REG_U16_OP_SYS_CLK_DIV, pll->op_sys_clk_div); } static int smiapp_pll_update(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); struct smiapp_pll_limits lim = { .min_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_PRE_PLL_CLK_DIV], .max_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_PRE_PLL_CLK_DIV], .min_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_IP_FREQ_HZ], .max_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_IP_FREQ_HZ], .min_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MIN_PLL_MULTIPLIER], .max_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MAX_PLL_MULTIPLIER], .min_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_OP_FREQ_HZ], .max_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_OP_FREQ_HZ], .op.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV], .op.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV], .op.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV], .op.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV], .op.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_FREQ_HZ], .op.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_FREQ_HZ], .op.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_FREQ_HZ], .op.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_FREQ_HZ], .vt.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_DIV], .vt.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_DIV], .vt.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_DIV], .vt.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_DIV], .vt.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_FREQ_HZ], .vt.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_FREQ_HZ], .vt.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_FREQ_HZ], .vt.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_FREQ_HZ], .min_line_length_pck_bin = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN], .min_line_length_pck = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK], }; struct smiapp_pll *pll = &sensor->pll; int rval; if (sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0) { /* * Fill in operational clock divisors limits from the * video timing ones. On profile 0 sensors the * requirements regarding them are essentially the * same as on VT ones. */ lim.op = lim.vt; } pll->binning_horizontal = sensor->binning_horizontal; pll->binning_vertical = sensor->binning_vertical; pll->link_freq = sensor->link_freq->qmenu_int[sensor->link_freq->val]; pll->scale_m = sensor->scale_m; pll->bits_per_pixel = sensor->csi_format->compressed; rval = smiapp_pll_calculate(&client->dev, &lim, pll); if (rval < 0) return rval; __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_parray, pll->vt_pix_clk_freq_hz); __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_csi, pll->pixel_rate_csi); return 0; } /* * * V4L2 Controls handling * */ static void __smiapp_update_exposure_limits(struct smiapp_sensor *sensor) { struct v4l2_ctrl *ctrl = sensor->exposure; int max; max = sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height + sensor->vblank->val - sensor->limits[SMIAPP_LIMIT_COARSE_INTEGRATION_TIME_MAX_MARGIN]; __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max, ctrl->step, max); } /* * Order matters. * * 1. Bits-per-pixel, descending. * 2. Bits-per-pixel compressed, descending. * 3. Pixel order, same as in pixel_order_str. Formats for all four pixel * orders must be defined. */ static const struct smiapp_csi_data_format smiapp_csi_data_formats[] = { { V4L2_MBUS_FMT_SGRBG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GRBG, }, { V4L2_MBUS_FMT_SRGGB12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_RGGB, }, { V4L2_MBUS_FMT_SBGGR12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_BGGR, }, { V4L2_MBUS_FMT_SGBRG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GBRG, }, { V4L2_MBUS_FMT_SGRBG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GRBG, }, { V4L2_MBUS_FMT_SRGGB10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_RGGB, }, { V4L2_MBUS_FMT_SBGGR10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_BGGR, }, { V4L2_MBUS_FMT_SGBRG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GBRG, }, { V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GRBG, }, { V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_RGGB, }, { V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_BGGR, }, { V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GBRG, }, { V4L2_MBUS_FMT_SGRBG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GRBG, }, { V4L2_MBUS_FMT_SRGGB8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_RGGB, }, { V4L2_MBUS_FMT_SBGGR8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_BGGR, }, { V4L2_MBUS_FMT_SGBRG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GBRG, }, }; const char *pixel_order_str[] = { "GRBG", "RGGB", "BGGR", "GBRG" }; #define to_csi_format_idx(fmt) (((unsigned long)(fmt) \ - (unsigned long)smiapp_csi_data_formats) \ / sizeof(*smiapp_csi_data_formats)) static u32 smiapp_pixel_order(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); int flip = 0; if (sensor->hflip) { if (sensor->hflip->val) flip |= SMIAPP_IMAGE_ORIENTATION_HFLIP; if (sensor->vflip->val) flip |= SMIAPP_IMAGE_ORIENTATION_VFLIP; } flip ^= sensor->hvflip_inv_mask; dev_dbg(&client->dev, "flip %d\n", flip); return sensor->default_pixel_order ^ flip; } static void smiapp_update_mbus_formats(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); unsigned int csi_format_idx = to_csi_format_idx(sensor->csi_format) & ~3; unsigned int internal_csi_format_idx = to_csi_format_idx(sensor->internal_csi_format) & ~3; unsigned int pixel_order = smiapp_pixel_order(sensor); sensor->mbus_frame_fmts = sensor->default_mbus_frame_fmts << pixel_order; sensor->csi_format = &smiapp_csi_data_formats[csi_format_idx + pixel_order]; sensor->internal_csi_format = &smiapp_csi_data_formats[internal_csi_format_idx + pixel_order]; BUG_ON(max(internal_csi_format_idx, csi_format_idx) + pixel_order >= ARRAY_SIZE(smiapp_csi_data_formats)); dev_dbg(&client->dev, "new pixel order %s\n", pixel_order_str[pixel_order]); } static const char * const smiapp_test_patterns[] = { "Disabled", "Solid Colour", "Eight Vertical Colour Bars", "Colour Bars With Fade to Grey", "Pseudorandom Sequence (PN9)", }; static int smiapp_set_ctrl(struct v4l2_ctrl *ctrl) { struct smiapp_sensor *sensor = container_of(ctrl->handler, struct smiapp_subdev, ctrl_handler) ->sensor; u32 orient = 0; int exposure; int rval; switch (ctrl->id) { case V4L2_CID_ANALOGUE_GAIN: return smiapp_write( sensor, SMIAPP_REG_U16_ANALOGUE_GAIN_CODE_GLOBAL, ctrl->val); case V4L2_CID_EXPOSURE: return smiapp_write( sensor, SMIAPP_REG_U16_COARSE_INTEGRATION_TIME, ctrl->val); case V4L2_CID_HFLIP: case V4L2_CID_VFLIP: if (sensor->streaming) return -EBUSY; if (sensor->hflip->val) orient |= SMIAPP_IMAGE_ORIENTATION_HFLIP; if (sensor->vflip->val) orient |= SMIAPP_IMAGE_ORIENTATION_VFLIP; orient ^= sensor->hvflip_inv_mask; rval = smiapp_write(sensor, SMIAPP_REG_U8_IMAGE_ORIENTATION, orient); if (rval < 0) return rval; smiapp_update_mbus_formats(sensor); return 0; case V4L2_CID_VBLANK: exposure = sensor->exposure->val; __smiapp_update_exposure_limits(sensor); if (exposure > sensor->exposure->maximum) { sensor->exposure->val = sensor->exposure->maximum; rval = smiapp_set_ctrl( sensor->exposure); if (rval < 0) return rval; } return smiapp_write( sensor, SMIAPP_REG_U16_FRAME_LENGTH_LINES, sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height + ctrl->val); case V4L2_CID_HBLANK: return smiapp_write( sensor, SMIAPP_REG_U16_LINE_LENGTH_PCK, sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width + ctrl->val); case V4L2_CID_LINK_FREQ: if (sensor->streaming) return -EBUSY; return smiapp_pll_update(sensor); case V4L2_CID_TEST_PATTERN: { unsigned int i; for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) v4l2_ctrl_activate( sensor->test_data[i], ctrl->val == V4L2_SMIAPP_TEST_PATTERN_MODE_SOLID_COLOUR); return smiapp_write( sensor, SMIAPP_REG_U16_TEST_PATTERN_MODE, ctrl->val); } case V4L2_CID_TEST_PATTERN_RED: return smiapp_write( sensor, SMIAPP_REG_U16_TEST_DATA_RED, ctrl->val); case V4L2_CID_TEST_PATTERN_GREENR: return smiapp_write( sensor, SMIAPP_REG_U16_TEST_DATA_GREENR, ctrl->val); case V4L2_CID_TEST_PATTERN_BLUE: return smiapp_write( sensor, SMIAPP_REG_U16_TEST_DATA_BLUE, ctrl->val); case V4L2_CID_TEST_PATTERN_GREENB: return smiapp_write( sensor, SMIAPP_REG_U16_TEST_DATA_GREENB, ctrl->val); case V4L2_CID_PIXEL_RATE: /* For v4l2_ctrl_s_ctrl_int64() used internally. */ return 0; default: return -EINVAL; } } static const struct v4l2_ctrl_ops smiapp_ctrl_ops = { .s_ctrl = smiapp_set_ctrl, }; static int smiapp_init_controls(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); unsigned int max, i; int rval; rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 12); if (rval) return rval; sensor->pixel_array->ctrl_handler.lock = &sensor->mutex; sensor->analog_gain = v4l2_ctrl_new_std( &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN], sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MAX], max(sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_STEP], 1U), sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN]); /* Exposure limits will be updated soon, use just something here. */ sensor->exposure = v4l2_ctrl_new_std( &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_EXPOSURE, 0, 0, 1, 0); sensor->hflip = v4l2_ctrl_new_std( &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); sensor->vflip = v4l2_ctrl_new_std( &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); sensor->vblank = v4l2_ctrl_new_std( &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_VBLANK, 0, 1, 1, 0); if (sensor->vblank) sensor->vblank->flags |= V4L2_CTRL_FLAG_UPDATE; sensor->hblank = v4l2_ctrl_new_std( &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_HBLANK, 0, 1, 1, 0); if (sensor->hblank) sensor->hblank->flags |= V4L2_CTRL_FLAG_UPDATE; sensor->pixel_rate_parray = v4l2_ctrl_new_std( &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1); v4l2_ctrl_new_std_menu_items(&sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(smiapp_test_patterns) - 1, 0, 0, smiapp_test_patterns); for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) { int max_value = (1 << sensor->csi_format->width) - 1; sensor->test_data[i] = v4l2_ctrl_new_std( &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN_RED + i, 0, max_value, 1, max_value); } if (sensor->pixel_array->ctrl_handler.error) { dev_err(&client->dev, "pixel array controls initialization failed (%d)\n", sensor->pixel_array->ctrl_handler.error); rval = sensor->pixel_array->ctrl_handler.error; goto error; } sensor->pixel_array->sd.ctrl_handler = &sensor->pixel_array->ctrl_handler; v4l2_ctrl_cluster(2, &sensor->hflip); rval = v4l2_ctrl_handler_init(&sensor->src->ctrl_handler, 0); if (rval) goto error; sensor->src->ctrl_handler.lock = &sensor->mutex; for (max = 0; sensor->platform_data->op_sys_clock[max + 1]; max++); sensor->link_freq = v4l2_ctrl_new_int_menu( &sensor->src->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_LINK_FREQ, max, 0, sensor->platform_data->op_sys_clock); sensor->pixel_rate_csi = v4l2_ctrl_new_std( &sensor->src->ctrl_handler, &smiapp_ctrl_ops, V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1); if (sensor->src->ctrl_handler.error) { dev_err(&client->dev, "src controls initialization failed (%d)\n", sensor->src->ctrl_handler.error); rval = sensor->src->ctrl_handler.error; goto error; } sensor->src->sd.ctrl_handler = &sensor->src->ctrl_handler; return 0; error: v4l2_ctrl_handler_free(&sensor->pixel_array->ctrl_handler); v4l2_ctrl_handler_free(&sensor->src->ctrl_handler); return rval; } static void smiapp_free_controls(struct smiapp_sensor *sensor) { unsigned int i; for (i = 0; i < sensor->ssds_used; i++) v4l2_ctrl_handler_free(&sensor->ssds[i].ctrl_handler); } static int smiapp_get_limits(struct smiapp_sensor *sensor, int const *limit, unsigned int n) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); unsigned int i; u32 val; int rval; for (i = 0; i < n; i++) { rval = smiapp_read( sensor, smiapp_reg_limits[limit[i]].addr, &val); if (rval) return rval; sensor->limits[limit[i]] = val; dev_dbg(&client->dev, "0x%8.8x \"%s\" = %u, 0x%x\n", smiapp_reg_limits[limit[i]].addr, smiapp_reg_limits[limit[i]].what, val, val); } return 0; } static int smiapp_get_all_limits(struct smiapp_sensor *sensor) { unsigned int i; int rval; for (i = 0; i < SMIAPP_LIMIT_LAST; i++) { rval = smiapp_get_limits(sensor, &i, 1); if (rval < 0) return rval; } if (sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] == 0) smiapp_replace_limit(sensor, SMIAPP_LIMIT_SCALER_N_MIN, 16); return 0; } static int smiapp_get_limits_binning(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); static u32 const limits[] = { SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN, SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN, SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN, SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN, SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN, SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN_BIN, SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN_BIN, }; static u32 const limits_replace[] = { SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES, SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES, SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK, SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK, SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK, SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN, SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN, }; unsigned int i; int rval; if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY] == SMIAPP_BINNING_CAPABILITY_NO) { for (i = 0; i < ARRAY_SIZE(limits); i++) sensor->limits[limits[i]] = sensor->limits[limits_replace[i]]; return 0; } rval = smiapp_get_limits(sensor, limits, ARRAY_SIZE(limits)); if (rval < 0) return rval; /* * Sanity check whether the binning limits are valid. If not, * use the non-binning ones. */ if (sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN] && sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN] && sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN]) return 0; for (i = 0; i < ARRAY_SIZE(limits); i++) { dev_dbg(&client->dev, "replace limit 0x%8.8x \"%s\" = %d, 0x%x\n", smiapp_reg_limits[limits[i]].addr, smiapp_reg_limits[limits[i]].what, sensor->limits[limits_replace[i]], sensor->limits[limits_replace[i]]); sensor->limits[limits[i]] = sensor->limits[limits_replace[i]]; } return 0; } static int smiapp_get_mbus_formats(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); unsigned int type, n; unsigned int i, pixel_order; int rval; rval = smiapp_read( sensor, SMIAPP_REG_U8_DATA_FORMAT_MODEL_TYPE, &type); if (rval) return rval; dev_dbg(&client->dev, "data_format_model_type %d\n", type); rval = smiapp_read(sensor, SMIAPP_REG_U8_PIXEL_ORDER, &pixel_order); if (rval) return rval; if (pixel_order >= ARRAY_SIZE(pixel_order_str)) { dev_dbg(&client->dev, "bad pixel order %d\n", pixel_order); return -EINVAL; } dev_dbg(&client->dev, "pixel order %d (%s)\n", pixel_order, pixel_order_str[pixel_order]); switch (type) { case SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL: n = SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL_N; break; case SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED: n = SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED_N; break; default: return -EINVAL; } sensor->default_pixel_order = pixel_order; sensor->mbus_frame_fmts = 0; for (i = 0; i < n; i++) { unsigned int fmt, j; rval = smiapp_read( sensor, SMIAPP_REG_U16_DATA_FORMAT_DESCRIPTOR(i), &fmt); if (rval) return rval; dev_dbg(&client->dev, "%u: bpp %u, compressed %u\n", i, fmt >> 8, (u8)fmt); for (j = 0; j < ARRAY_SIZE(smiapp_csi_data_formats); j++) { const struct smiapp_csi_data_format *f = &smiapp_csi_data_formats[j]; if (f->pixel_order != SMIAPP_PIXEL_ORDER_GRBG) continue; if (f->width != fmt >> 8 || f->compressed != (u8)fmt) continue; dev_dbg(&client->dev, "jolly good! %d\n", j); sensor->default_mbus_frame_fmts |= 1 << j; if (!sensor->csi_format || f->width > sensor->csi_format->width || (f->width == sensor->csi_format->width && f->compressed > sensor->csi_format->compressed)) { sensor->csi_format = f; sensor->internal_csi_format = f; } } } if (!sensor->csi_format) { dev_err(&client->dev, "no supported mbus code found\n"); return -EINVAL; } smiapp_update_mbus_formats(sensor); return 0; } static void smiapp_update_blanking(struct smiapp_sensor *sensor) { struct v4l2_ctrl *vblank = sensor->vblank; struct v4l2_ctrl *hblank = sensor->hblank; int min, max; min = max_t(int, sensor->limits[SMIAPP_LIMIT_MIN_FRAME_BLANKING_LINES], sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN] - sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height); max = sensor->limits[SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN] - sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height; __v4l2_ctrl_modify_range(vblank, min, max, vblank->step, min); min = max_t(int, sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN] - sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width, sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN]); max = sensor->limits[SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN] - sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width; __v4l2_ctrl_modify_range(hblank, min, max, hblank->step, min); __smiapp_update_exposure_limits(sensor); } static int smiapp_update_mode(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); unsigned int binning_mode; int rval; dev_dbg(&client->dev, "frame size: %dx%d\n", sensor->src->crop[SMIAPP_PAD_SRC].width, sensor->src->crop[SMIAPP_PAD_SRC].height); dev_dbg(&client->dev, "csi format width: %d\n", sensor->csi_format->width); /* Binning has to be set up here; it affects limits */ if (sensor->binning_horizontal == 1 && sensor->binning_vertical == 1) { binning_mode = 0; } else { u8 binning_type = (sensor->binning_horizontal << 4) | sensor->binning_vertical; rval = smiapp_write( sensor, SMIAPP_REG_U8_BINNING_TYPE, binning_type); if (rval < 0) return rval; binning_mode = 1; } rval = smiapp_write(sensor, SMIAPP_REG_U8_BINNING_MODE, binning_mode); if (rval < 0) return rval; /* Get updated limits due to binning */ rval = smiapp_get_limits_binning(sensor); if (rval < 0) return rval; rval = smiapp_pll_update(sensor); if (rval < 0) return rval; /* Output from pixel array, including blanking */ smiapp_update_blanking(sensor); dev_dbg(&client->dev, "vblank\t\t%d\n", sensor->vblank->val); dev_dbg(&client->dev, "hblank\t\t%d\n", sensor->hblank->val); dev_dbg(&client->dev, "real timeperframe\t100/%d\n", sensor->pll.vt_pix_clk_freq_hz / ((sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width + sensor->hblank->val) * (sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height + sensor->vblank->val) / 100)); return 0; } /* * * SMIA++ NVM handling * */ static int smiapp_read_nvm(struct smiapp_sensor *sensor, unsigned char *nvm) { u32 i, s, p, np, v; int rval = 0, rval2; np = sensor->nvm_size / SMIAPP_NVM_PAGE_SIZE; for (p = 0; p < np; p++) { rval = smiapp_write( sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_PAGE_SELECT, p); if (rval) goto out; rval = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL, SMIAPP_DATA_TRANSFER_IF_1_CTRL_EN | SMIAPP_DATA_TRANSFER_IF_1_CTRL_RD_EN); if (rval) goto out; for (i = 0; i < 1000; i++) { rval = smiapp_read( sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS, &s); if (rval) goto out; if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY) break; if (--i == 0) { rval = -ETIMEDOUT; goto out; } } for (i = 0; i < SMIAPP_NVM_PAGE_SIZE; i++) { rval = smiapp_read( sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_DATA_0 + i, &v); if (rval) goto out; *nvm++ = v; } } out: rval2 = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL, 0); if (rval < 0) return rval; else return rval2; } /* * * SMIA++ CCI address control * */ static int smiapp_change_cci_addr(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); int rval; u32 val; client->addr = sensor->platform_data->i2c_addr_dfl; rval = smiapp_write(sensor, SMIAPP_REG_U8_CCI_ADDRESS_CONTROL, sensor->platform_data->i2c_addr_alt << 1); if (rval) return rval; client->addr = sensor->platform_data->i2c_addr_alt; /* verify addr change went ok */ rval = smiapp_read(sensor, SMIAPP_REG_U8_CCI_ADDRESS_CONTROL, &val); if (rval) return rval; if (val != sensor->platform_data->i2c_addr_alt << 1) return -ENODEV; return 0; } /* * * SMIA++ Mode Control * */ static int smiapp_setup_flash_strobe(struct smiapp_sensor *sensor) { struct smiapp_flash_strobe_parms *strobe_setup; unsigned int ext_freq = sensor->platform_data->ext_clk; u32 tmp; u32 strobe_adjustment; u32 strobe_width_high_rs; int rval; strobe_setup = sensor->platform_data->strobe_setup; /* * How to calculate registers related to strobe length. Please * do not change, or if you do at least know what you're * doing. :-) * * Sakari Ailus 2010-10-25 * * flash_strobe_length [us] / 10^6 = (tFlash_strobe_width_ctrl * / EXTCLK freq [Hz]) * flash_strobe_adjustment * * tFlash_strobe_width_ctrl E N, [1 - 0xffff] * flash_strobe_adjustment E N, [1 - 0xff] * * The formula above is written as below to keep it on one * line: * * l / 10^6 = w / e * a * * Let's mark w * a by x: * * x = w * a * * Thus, we get: * * x = l * e / 10^6 * * The strobe width must be at least as long as requested, * thus rounding upwards is needed. * * x = (l * e + 10^6 - 1) / 10^6 * ----------------------------- * * Maximum possible accuracy is wanted at all times. Thus keep * a as small as possible. * * Calculate a, assuming maximum w, with rounding upwards: * * a = (x + (2^16 - 1) - 1) / (2^16 - 1) * ------------------------------------- * * Thus, we also get w, with that a, with rounding upwards: * * w = (x + a - 1) / a * ------------------- * * To get limits: * * x E [1, (2^16 - 1) * (2^8 - 1)] * * Substituting maximum x to the original formula (with rounding), * the maximum l is thus * * (2^16 - 1) * (2^8 - 1) * 10^6 = l * e + 10^6 - 1 * * l = (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / e * -------------------------------------------------- * * flash_strobe_length must be clamped between 1 and * (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / EXTCLK freq. * * Then, * * flash_strobe_adjustment = ((flash_strobe_length * * EXTCLK freq + 10^6 - 1) / 10^6 + (2^16 - 1) - 1) / (2^16 - 1) * * tFlash_strobe_width_ctrl = ((flash_strobe_length * * EXTCLK freq + 10^6 - 1) / 10^6 + * flash_strobe_adjustment - 1) / flash_strobe_adjustment */ tmp = div_u64(1000000ULL * ((1 << 16) - 1) * ((1 << 8) - 1) - 1000000 + 1, ext_freq); strobe_setup->strobe_width_high_us = clamp_t(u32, strobe_setup->strobe_width_high_us, 1, tmp); tmp = div_u64(((u64)strobe_setup->strobe_width_high_us * (u64)ext_freq + 1000000 - 1), 1000000ULL); strobe_adjustment = (tmp + (1 << 16) - 1 - 1) / ((1 << 16) - 1); strobe_width_high_rs = (tmp + strobe_adjustment - 1) / strobe_adjustment; rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_MODE_RS, strobe_setup->mode); if (rval < 0) goto out; rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_STROBE_ADJUSTMENT, strobe_adjustment); if (rval < 0) goto out; rval = smiapp_write( sensor, SMIAPP_REG_U16_TFLASH_STROBE_WIDTH_HIGH_RS_CTRL, strobe_width_high_rs); if (rval < 0) goto out; rval = smiapp_write(sensor, SMIAPP_REG_U16_TFLASH_STROBE_DELAY_RS_CTRL, strobe_setup->strobe_delay); if (rval < 0) goto out; rval = smiapp_write(sensor, SMIAPP_REG_U16_FLASH_STROBE_START_POINT, strobe_setup->stobe_start_point); if (rval < 0) goto out; rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_TRIGGER_RS, strobe_setup->trigger); out: sensor->platform_data->strobe_setup->trigger = 0; return rval; } /* ----------------------------------------------------------------------------- * Power management */ static int smiapp_power_on(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); unsigned int sleep; int rval; rval = regulator_enable(sensor->vana); if (rval) { dev_err(&client->dev, "failed to enable vana regulator\n"); return rval; } usleep_range(1000, 1000); if (sensor->platform_data->set_xclk) rval = sensor->platform_data->set_xclk( &sensor->src->sd, sensor->platform_data->ext_clk); else rval = clk_prepare_enable(sensor->ext_clk); if (rval < 0) { dev_dbg(&client->dev, "failed to enable xclk\n"); goto out_xclk_fail; } usleep_range(1000, 1000); if (gpio_is_valid(sensor->platform_data->xshutdown)) gpio_set_value(sensor->platform_data->xshutdown, 1); sleep = SMIAPP_RESET_DELAY(sensor->platform_data->ext_clk); usleep_range(sleep, sleep); /* * Failures to respond to the address change command have been noticed. * Those failures seem to be caused by the sensor requiring a longer * boot time than advertised. An additional 10ms delay seems to work * around the issue, but the SMIA++ I2C write retry hack makes the delay * unnecessary. The failures need to be investigated to find a proper * fix, and a delay will likely need to be added here if the I2C write * retry hack is reverted before the root cause of the boot time issue * is found. */ if (sensor->platform_data->i2c_addr_alt) { rval = smiapp_change_cci_addr(sensor); if (rval) { dev_err(&client->dev, "cci address change error\n"); goto out_cci_addr_fail; } } rval = smiapp_write(sensor, SMIAPP_REG_U8_SOFTWARE_RESET, SMIAPP_SOFTWARE_RESET); if (rval < 0) { dev_err(&client->dev, "software reset failed\n"); goto out_cci_addr_fail; } if (sensor->platform_data->i2c_addr_alt) { rval = smiapp_change_cci_addr(sensor); if (rval) { dev_err(&client->dev, "cci address change error\n"); goto out_cci_addr_fail; } } rval = smiapp_write(sensor, SMIAPP_REG_U16_COMPRESSION_MODE, SMIAPP_COMPRESSION_MODE_SIMPLE_PREDICTOR); if (rval) { dev_err(&client->dev, "compression mode set failed\n"); goto out_cci_addr_fail; } rval = smiapp_write( sensor, SMIAPP_REG_U16_EXTCLK_FREQUENCY_MHZ, sensor->platform_data->ext_clk / (1000000 / (1 << 8))); if (rval) { dev_err(&client->dev, "extclk frequency set failed\n"); goto out_cci_addr_fail; } rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_LANE_MODE, sensor->platform_data->lanes - 1); if (rval) { dev_err(&client->dev, "csi lane mode set failed\n"); goto out_cci_addr_fail; } rval = smiapp_write(sensor, SMIAPP_REG_U8_FAST_STANDBY_CTRL, SMIAPP_FAST_STANDBY_CTRL_IMMEDIATE); if (rval) { dev_err(&client->dev, "fast standby set failed\n"); goto out_cci_addr_fail; } rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_SIGNALLING_MODE, sensor->platform_data->csi_signalling_mode); if (rval) { dev_err(&client->dev, "csi signalling mode set failed\n"); goto out_cci_addr_fail; } /* DPHY control done by sensor based on requested link rate */ rval = smiapp_write(sensor, SMIAPP_REG_U8_DPHY_CTRL, SMIAPP_DPHY_CTRL_UI); if (rval < 0) return rval; rval = smiapp_call_quirk(sensor, post_poweron); if (rval) { dev_err(&client->dev, "post_poweron quirks failed\n"); goto out_cci_addr_fail; } /* Are we still initialising...? If yes, return here. */ if (!sensor->pixel_array) return 0; rval = v4l2_ctrl_handler_setup( &sensor->pixel_array->ctrl_handler); if (rval) goto out_cci_addr_fail; rval = v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler); if (rval) goto out_cci_addr_fail; mutex_lock(&sensor->mutex); rval = smiapp_update_mode(sensor); mutex_unlock(&sensor->mutex); if (rval < 0) goto out_cci_addr_fail; return 0; out_cci_addr_fail: if (gpio_is_valid(sensor->platform_data->xshutdown)) gpio_set_value(sensor->platform_data->xshutdown, 0); if (sensor->platform_data->set_xclk) sensor->platform_data->set_xclk(&sensor->src->sd, 0); else clk_disable_unprepare(sensor->ext_clk); out_xclk_fail: regulator_disable(sensor->vana); return rval; } static void smiapp_power_off(struct smiapp_sensor *sensor) { /* * Currently power/clock to lens are enable/disabled separately * but they are essentially the same signals. So if the sensor is * powered off while the lens is powered on the sensor does not * really see a power off and next time the cci address change * will fail. So do a soft reset explicitly here. */ if (sensor->platform_data->i2c_addr_alt) smiapp_write(sensor, SMIAPP_REG_U8_SOFTWARE_RESET, SMIAPP_SOFTWARE_RESET); if (gpio_is_valid(sensor->platform_data->xshutdown)) gpio_set_value(sensor->platform_data->xshutdown, 0); if (sensor->platform_data->set_xclk) sensor->platform_data->set_xclk(&sensor->src->sd, 0); else clk_disable_unprepare(sensor->ext_clk); usleep_range(5000, 5000); regulator_disable(sensor->vana); sensor->streaming = false; } static int smiapp_set_power(struct v4l2_subdev *subdev, int on) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); int ret = 0; mutex_lock(&sensor->power_mutex); /* * If the power count is modified from 0 to != 0 or from != 0 * to 0, update the power state. */ if (!sensor->power_count == !on) goto out; if (on) { /* Power on and perform initialisation. */ ret = smiapp_power_on(sensor); if (ret < 0) goto out; } else { smiapp_power_off(sensor); } /* Update the power count. */ sensor->power_count += on ? 1 : -1; WARN_ON(sensor->power_count < 0); out: mutex_unlock(&sensor->power_mutex); return ret; } /* ----------------------------------------------------------------------------- * Video stream management */ static int smiapp_start_streaming(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); int rval; mutex_lock(&sensor->mutex); rval = smiapp_write(sensor, SMIAPP_REG_U16_CSI_DATA_FORMAT, (sensor->csi_format->width << 8) | sensor->csi_format->compressed); if (rval) goto out; rval = smiapp_pll_configure(sensor); if (rval) goto out; /* Analog crop start coordinates */ rval = smiapp_write(sensor, SMIAPP_REG_U16_X_ADDR_START, sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left); if (rval < 0) goto out; rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_ADDR_START, sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top); if (rval < 0) goto out; /* Analog crop end coordinates */ rval = smiapp_write( sensor, SMIAPP_REG_U16_X_ADDR_END, sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width - 1); if (rval < 0) goto out; rval = smiapp_write( sensor, SMIAPP_REG_U16_Y_ADDR_END, sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height - 1); if (rval < 0) goto out; /* * Output from pixel array, including blanking, is set using * controls below. No need to set here. */ /* Digital crop */ if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY] == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) { rval = smiapp_write( sensor, SMIAPP_REG_U16_DIGITAL_CROP_X_OFFSET, sensor->scaler->crop[SMIAPP_PAD_SINK].left); if (rval < 0) goto out; rval = smiapp_write( sensor, SMIAPP_REG_U16_DIGITAL_CROP_Y_OFFSET, sensor->scaler->crop[SMIAPP_PAD_SINK].top); if (rval < 0) goto out; rval = smiapp_write( sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_WIDTH, sensor->scaler->crop[SMIAPP_PAD_SINK].width); if (rval < 0) goto out; rval = smiapp_write( sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_HEIGHT, sensor->scaler->crop[SMIAPP_PAD_SINK].height); if (rval < 0) goto out; } /* Scaling */ if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY] != SMIAPP_SCALING_CAPABILITY_NONE) { rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALING_MODE, sensor->scaling_mode); if (rval < 0) goto out; rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALE_M, sensor->scale_m); if (rval < 0) goto out; } /* Output size from sensor */ rval = smiapp_write(sensor, SMIAPP_REG_U16_X_OUTPUT_SIZE, sensor->src->crop[SMIAPP_PAD_SRC].width); if (rval < 0) goto out; rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_OUTPUT_SIZE, sensor->src->crop[SMIAPP_PAD_SRC].height); if (rval < 0) goto out; if ((sensor->flash_capability & (SMIAPP_FLASH_MODE_CAPABILITY_SINGLE_STROBE | SMIAPP_FLASH_MODE_CAPABILITY_MULTIPLE_STROBE)) && sensor->platform_data->strobe_setup != NULL && sensor->platform_data->strobe_setup->trigger != 0) { rval = smiapp_setup_flash_strobe(sensor); if (rval) goto out; } rval = smiapp_call_quirk(sensor, pre_streamon); if (rval) { dev_err(&client->dev, "pre_streamon quirks failed\n"); goto out; } rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT, SMIAPP_MODE_SELECT_STREAMING); out: mutex_unlock(&sensor->mutex); return rval; } static int smiapp_stop_streaming(struct smiapp_sensor *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); int rval; mutex_lock(&sensor->mutex); rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT, SMIAPP_MODE_SELECT_SOFTWARE_STANDBY); if (rval) goto out; rval = smiapp_call_quirk(sensor, post_streamoff); if (rval) dev_err(&client->dev, "post_streamoff quirks failed\n"); out: mutex_unlock(&sensor->mutex); return rval; } /* ----------------------------------------------------------------------------- * V4L2 subdev video operations */ static int smiapp_set_stream(struct v4l2_subdev *subdev, int enable) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); int rval; if (sensor->streaming == enable) return 0; if (enable) { sensor->streaming = true; rval = smiapp_start_streaming(sensor); if (rval < 0) sensor->streaming = false; } else { rval = smiapp_stop_streaming(sensor); sensor->streaming = false; } return rval; } static int smiapp_enum_mbus_code(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_mbus_code_enum *code) { struct i2c_client *client = v4l2_get_subdevdata(subdev); struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); unsigned int i; int idx = -1; int rval = -EINVAL; mutex_lock(&sensor->mutex); dev_err(&client->dev, "subdev %s, pad %d, index %d\n", subdev->name, code->pad, code->index); if (subdev != &sensor->src->sd || code->pad != SMIAPP_PAD_SRC) { if (code->index) goto out; code->code = sensor->internal_csi_format->code; rval = 0; goto out; } for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) { if (sensor->mbus_frame_fmts & (1 << i)) idx++; if (idx == code->index) { code->code = smiapp_csi_data_formats[i].code; dev_err(&client->dev, "found index %d, i %d, code %x\n", code->index, i, code->code); rval = 0; break; } } out: mutex_unlock(&sensor->mutex); return rval; } static u32 __smiapp_get_mbus_code(struct v4l2_subdev *subdev, unsigned int pad) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); if (subdev == &sensor->src->sd && pad == SMIAPP_PAD_SRC) return sensor->csi_format->code; else return sensor->internal_csi_format->code; } static int __smiapp_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { fmt->format = *v4l2_subdev_get_try_format(fh, fmt->pad); } else { struct v4l2_rect *r; if (fmt->pad == ssd->source_pad) r = &ssd->crop[ssd->source_pad]; else r = &ssd->sink_fmt; fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad); fmt->format.width = r->width; fmt->format.height = r->height; fmt->format.field = V4L2_FIELD_NONE; } return 0; } static int smiapp_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); int rval; mutex_lock(&sensor->mutex); rval = __smiapp_get_format(subdev, fh, fmt); mutex_unlock(&sensor->mutex); return rval; } static void smiapp_get_crop_compose(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_rect **crops, struct v4l2_rect **comps, int which) { struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); unsigned int i; if (which == V4L2_SUBDEV_FORMAT_ACTIVE) { if (crops) for (i = 0; i < subdev->entity.num_pads; i++) crops[i] = &ssd->crop[i]; if (comps) *comps = &ssd->compose; } else { if (crops) { for (i = 0; i < subdev->entity.num_pads; i++) { crops[i] = v4l2_subdev_get_try_crop(fh, i); BUG_ON(!crops[i]); } } if (comps) { *comps = v4l2_subdev_get_try_compose(fh, SMIAPP_PAD_SINK); BUG_ON(!*comps); } } } /* Changes require propagation only on sink pad. */ static void smiapp_propagate(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, int which, int target) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); struct v4l2_rect *comp, *crops[SMIAPP_PADS]; smiapp_get_crop_compose(subdev, fh, crops, &comp, which); switch (target) { case V4L2_SEL_TGT_CROP: comp->width = crops[SMIAPP_PAD_SINK]->width; comp->height = crops[SMIAPP_PAD_SINK]->height; if (which == V4L2_SUBDEV_FORMAT_ACTIVE) { if (ssd == sensor->scaler) { sensor->scale_m = sensor->limits[ SMIAPP_LIMIT_SCALER_N_MIN]; sensor->scaling_mode = SMIAPP_SCALING_MODE_NONE; } else if (ssd == sensor->binner) { sensor->binning_horizontal = 1; sensor->binning_vertical = 1; } } /* Fall through */ case V4L2_SEL_TGT_COMPOSE: *crops[SMIAPP_PAD_SRC] = *comp; break; default: BUG(); } } static const struct smiapp_csi_data_format *smiapp_validate_csi_data_format(struct smiapp_sensor *sensor, u32 code) { const struct smiapp_csi_data_format *csi_format = sensor->csi_format; unsigned int i; for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) { if (sensor->mbus_frame_fmts & (1 << i) && smiapp_csi_data_formats[i].code == code) return &smiapp_csi_data_formats[i]; } return csi_format; } static int smiapp_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); struct v4l2_rect *crops[SMIAPP_PADS]; mutex_lock(&sensor->mutex); /* * Media bus code is changeable on src subdev's source pad. On * other source pads we just get format here. */ if (fmt->pad == ssd->source_pad) { u32 code = fmt->format.code; int rval = __smiapp_get_format(subdev, fh, fmt); bool range_changed = false; unsigned int i; if (!rval && subdev == &sensor->src->sd) { const struct smiapp_csi_data_format *csi_format = smiapp_validate_csi_data_format(sensor, code); if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { if (csi_format->width != sensor->csi_format->width) range_changed = true; sensor->csi_format = csi_format; } fmt->format.code = csi_format->code; } mutex_unlock(&sensor->mutex); if (rval || !range_changed) return rval; for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) v4l2_ctrl_modify_range( sensor->test_data[i], 0, (1 << sensor->csi_format->width) - 1, 1, 0); return 0; } /* Sink pad. Width and height are changeable here. */ fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad); fmt->format.width &= ~1; fmt->format.height &= ~1; fmt->format.field = V4L2_FIELD_NONE; fmt->format.width = clamp(fmt->format.width, sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE], sensor->limits[SMIAPP_LIMIT_MAX_X_OUTPUT_SIZE]); fmt->format.height = clamp(fmt->format.height, sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE], sensor->limits[SMIAPP_LIMIT_MAX_Y_OUTPUT_SIZE]); smiapp_get_crop_compose(subdev, fh, crops, NULL, fmt->which); crops[ssd->sink_pad]->left = 0; crops[ssd->sink_pad]->top = 0; crops[ssd->sink_pad]->width = fmt->format.width; crops[ssd->sink_pad]->height = fmt->format.height; if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) ssd->sink_fmt = *crops[ssd->sink_pad]; smiapp_propagate(subdev, fh, fmt->which, V4L2_SEL_TGT_CROP); mutex_unlock(&sensor->mutex); return 0; } /* * Calculate goodness of scaled image size compared to expected image * size and flags provided. */ #define SCALING_GOODNESS 100000 #define SCALING_GOODNESS_EXTREME 100000000 static int scaling_goodness(struct v4l2_subdev *subdev, int w, int ask_w, int h, int ask_h, u32 flags) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); struct i2c_client *client = v4l2_get_subdevdata(subdev); int val = 0; w &= ~1; ask_w &= ~1; h &= ~1; ask_h &= ~1; if (flags & V4L2_SEL_FLAG_GE) { if (w < ask_w) val -= SCALING_GOODNESS; if (h < ask_h) val -= SCALING_GOODNESS; } if (flags & V4L2_SEL_FLAG_LE) { if (w > ask_w) val -= SCALING_GOODNESS; if (h > ask_h) val -= SCALING_GOODNESS; } val -= abs(w - ask_w); val -= abs(h - ask_h); if (w < sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE]) val -= SCALING_GOODNESS_EXTREME; dev_dbg(&client->dev, "w %d ask_w %d h %d ask_h %d goodness %d\n", w, ask_h, h, ask_h, val); return val; } static void smiapp_set_compose_binner(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel, struct v4l2_rect **crops, struct v4l2_rect *comp) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); unsigned int i; unsigned int binh = 1, binv = 1; int best = scaling_goodness( subdev, crops[SMIAPP_PAD_SINK]->width, sel->r.width, crops[SMIAPP_PAD_SINK]->height, sel->r.height, sel->flags); for (i = 0; i < sensor->nbinning_subtypes; i++) { int this = scaling_goodness( subdev, crops[SMIAPP_PAD_SINK]->width / sensor->binning_subtypes[i].horizontal, sel->r.width, crops[SMIAPP_PAD_SINK]->height / sensor->binning_subtypes[i].vertical, sel->r.height, sel->flags); if (this > best) { binh = sensor->binning_subtypes[i].horizontal; binv = sensor->binning_subtypes[i].vertical; best = this; } } if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { sensor->binning_vertical = binv; sensor->binning_horizontal = binh; } sel->r.width = (crops[SMIAPP_PAD_SINK]->width / binh) & ~1; sel->r.height = (crops[SMIAPP_PAD_SINK]->height / binv) & ~1; } /* * Calculate best scaling ratio and mode for given output resolution. * * Try all of these: horizontal ratio, vertical ratio and smallest * size possible (horizontally). * * Also try whether horizontal scaler or full scaler gives a better * result. */ static void smiapp_set_compose_scaler(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel, struct v4l2_rect **crops, struct v4l2_rect *comp) { struct i2c_client *client = v4l2_get_subdevdata(subdev); struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); u32 min, max, a, b, max_m; u32 scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]; int mode = SMIAPP_SCALING_MODE_HORIZONTAL; u32 try[4]; u32 ntry = 0; unsigned int i; int best = INT_MIN; sel->r.width = min_t(unsigned int, sel->r.width, crops[SMIAPP_PAD_SINK]->width); sel->r.height = min_t(unsigned int, sel->r.height, crops[SMIAPP_PAD_SINK]->height); a = crops[SMIAPP_PAD_SINK]->width * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.width; b = crops[SMIAPP_PAD_SINK]->height * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.height; max_m = crops[SMIAPP_PAD_SINK]->width * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE]; a = clamp(a, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN], sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]); b = clamp(b, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN], sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]); max_m = clamp(max_m, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN], sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]); dev_dbg(&client->dev, "scaling: a %d b %d max_m %d\n", a, b, max_m); min = min(max_m, min(a, b)); max = min(max_m, max(a, b)); try[ntry] = min; ntry++; if (min != max) { try[ntry] = max; ntry++; } if (max != max_m) { try[ntry] = min + 1; ntry++; if (min != max) { try[ntry] = max + 1; ntry++; } } for (i = 0; i < ntry; i++) { int this = scaling_goodness( subdev, crops[SMIAPP_PAD_SINK]->width / try[i] * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN], sel->r.width, crops[SMIAPP_PAD_SINK]->height, sel->r.height, sel->flags); dev_dbg(&client->dev, "trying factor %d (%d)\n", try[i], i); if (this > best) { scale_m = try[i]; mode = SMIAPP_SCALING_MODE_HORIZONTAL; best = this; } if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY] == SMIAPP_SCALING_CAPABILITY_HORIZONTAL) continue; this = scaling_goodness( subdev, crops[SMIAPP_PAD_SINK]->width / try[i] * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN], sel->r.width, crops[SMIAPP_PAD_SINK]->height / try[i] * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN], sel->r.height, sel->flags); if (this > best) { scale_m = try[i]; mode = SMIAPP_SCALING_MODE_BOTH; best = this; } } sel->r.width = (crops[SMIAPP_PAD_SINK]->width / scale_m * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]) & ~1; if (mode == SMIAPP_SCALING_MODE_BOTH) sel->r.height = (crops[SMIAPP_PAD_SINK]->height / scale_m * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]) & ~1; else sel->r.height = crops[SMIAPP_PAD_SINK]->height; if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { sensor->scale_m = scale_m; sensor->scaling_mode = mode; } } /* We're only called on source pads. This function sets scaling. */ static int smiapp_set_compose(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); struct v4l2_rect *comp, *crops[SMIAPP_PADS]; smiapp_get_crop_compose(subdev, fh, crops, &comp, sel->which); sel->r.top = 0; sel->r.left = 0; if (ssd == sensor->binner) smiapp_set_compose_binner(subdev, fh, sel, crops, comp); else smiapp_set_compose_scaler(subdev, fh, sel, crops, comp); *comp = sel->r; smiapp_propagate(subdev, fh, sel->which, V4L2_SEL_TGT_COMPOSE); if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) return smiapp_update_mode(sensor); return 0; } static int __smiapp_sel_supported(struct v4l2_subdev *subdev, struct v4l2_subdev_selection *sel) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); /* We only implement crop in three places. */ switch (sel->target) { case V4L2_SEL_TGT_CROP: case V4L2_SEL_TGT_CROP_BOUNDS: if (ssd == sensor->pixel_array && sel->pad == SMIAPP_PA_PAD_SRC) return 0; if (ssd == sensor->src && sel->pad == SMIAPP_PAD_SRC) return 0; if (ssd == sensor->scaler && sel->pad == SMIAPP_PAD_SINK && sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY] == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) return 0; return -EINVAL; case V4L2_SEL_TGT_COMPOSE: case V4L2_SEL_TGT_COMPOSE_BOUNDS: if (sel->pad == ssd->source_pad) return -EINVAL; if (ssd == sensor->binner) return 0; if (ssd == sensor->scaler && sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY] != SMIAPP_SCALING_CAPABILITY_NONE) return 0; /* Fall through */ default: return -EINVAL; } } static int smiapp_set_crop(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); struct v4l2_rect *src_size, *crops[SMIAPP_PADS]; struct v4l2_rect _r; smiapp_get_crop_compose(subdev, fh, crops, NULL, sel->which); if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { if (sel->pad == ssd->sink_pad) src_size = &ssd->sink_fmt; else src_size = &ssd->compose; } else { if (sel->pad == ssd->sink_pad) { _r.left = 0; _r.top = 0; _r.width = v4l2_subdev_get_try_format(fh, sel->pad) ->width; _r.height = v4l2_subdev_get_try_format(fh, sel->pad) ->height; src_size = &_r; } else { src_size = v4l2_subdev_get_try_compose( fh, ssd->sink_pad); } } if (ssd == sensor->src && sel->pad == SMIAPP_PAD_SRC) { sel->r.left = 0; sel->r.top = 0; } sel->r.width = min(sel->r.width, src_size->width); sel->r.height = min(sel->r.height, src_size->height); sel->r.left = min_t(int, sel->r.left, src_size->width - sel->r.width); sel->r.top = min_t(int, sel->r.top, src_size->height - sel->r.height); *crops[sel->pad] = sel->r; if (ssd != sensor->pixel_array && sel->pad == SMIAPP_PAD_SINK) smiapp_propagate(subdev, fh, sel->which, V4L2_SEL_TGT_CROP); return 0; } static int __smiapp_get_selection(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); struct smiapp_subdev *ssd = to_smiapp_subdev(subdev); struct v4l2_rect *comp, *crops[SMIAPP_PADS]; struct v4l2_rect sink_fmt; int ret; ret = __smiapp_sel_supported(subdev, sel); if (ret) return ret; smiapp_get_crop_compose(subdev, fh, crops, &comp, sel->which); if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { sink_fmt = ssd->sink_fmt; } else { struct v4l2_mbus_framefmt *fmt = v4l2_subdev_get_try_format(fh, ssd->sink_pad); sink_fmt.left = 0; sink_fmt.top = 0; sink_fmt.width = fmt->width; sink_fmt.height = fmt->height; } switch (sel->target) { case V4L2_SEL_TGT_CROP_BOUNDS: if (ssd == sensor->pixel_array) { sel->r.width = sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1; sel->r.height = sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1; } else if (sel->pad == ssd->sink_pad) { sel->r = sink_fmt; } else { sel->r = *comp; } break; case V4L2_SEL_TGT_CROP: case V4L2_SEL_TGT_COMPOSE_BOUNDS: sel->r = *crops[sel->pad]; break; case V4L2_SEL_TGT_COMPOSE: sel->r = *comp; break; } return 0; } static int smiapp_get_selection(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); int rval; mutex_lock(&sensor->mutex); rval = __smiapp_get_selection(subdev, fh, sel); mutex_unlock(&sensor->mutex); return rval; } static int smiapp_set_selection(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); int ret; ret = __smiapp_sel_supported(subdev, sel); if (ret) return ret; mutex_lock(&sensor->mutex); sel->r.left = max(0, sel->r.left & ~1); sel->r.top = max(0, sel->r.top & ~1); sel->r.width = SMIAPP_ALIGN_DIM(sel->r.width, sel->flags); sel->r.height = SMIAPP_ALIGN_DIM(sel->r.height, sel->flags); sel->r.width = max_t(unsigned int, sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE], sel->r.width); sel->r.height = max_t(unsigned int, sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE], sel->r.height); switch (sel->target) { case V4L2_SEL_TGT_CROP: ret = smiapp_set_crop(subdev, fh, sel); break; case V4L2_SEL_TGT_COMPOSE: ret = smiapp_set_compose(subdev, fh, sel); break; default: BUG(); } mutex_unlock(&sensor->mutex); return ret; } static int smiapp_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); *frames = sensor->frame_skip; return 0; } /* ----------------------------------------------------------------------------- * sysfs attributes */ static ssize_t smiapp_sysfs_nvm_read(struct device *dev, struct device_attribute *attr, char *buf) { struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev)); struct i2c_client *client = v4l2_get_subdevdata(subdev); struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); unsigned int nbytes; if (!sensor->dev_init_done) return -EBUSY; if (!sensor->nvm_size) { /* NVM not read yet - read it now */ sensor->nvm_size = sensor->platform_data->nvm_size; if (smiapp_set_power(subdev, 1) < 0) return -ENODEV; if (smiapp_read_nvm(sensor, sensor->nvm)) { dev_err(&client->dev, "nvm read failed\n"); return -ENODEV; } smiapp_set_power(subdev, 0); } /* * NVM is still way below a PAGE_SIZE, so we can safely * assume this for now. */ nbytes = min_t(unsigned int, sensor->nvm_size, PAGE_SIZE); memcpy(buf, sensor->nvm, nbytes); return nbytes; } static DEVICE_ATTR(nvm, S_IRUGO, smiapp_sysfs_nvm_read, NULL); static ssize_t smiapp_sysfs_ident_read(struct device *dev, struct device_attribute *attr, char *buf) { struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev)); struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); struct smiapp_module_info *minfo = &sensor->minfo; return snprintf(buf, PAGE_SIZE, "%2.2x%4.4x%2.2x\n", minfo->manufacturer_id, minfo->model_id, minfo->revision_number_major) + 1; } static DEVICE_ATTR(ident, S_IRUGO, smiapp_sysfs_ident_read, NULL); /* ----------------------------------------------------------------------------- * V4L2 subdev core operations */ static int smiapp_identify_module(struct v4l2_subdev *subdev) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); struct i2c_client *client = v4l2_get_subdevdata(subdev); struct smiapp_module_info *minfo = &sensor->minfo; unsigned int i; int rval = 0; minfo->name = SMIAPP_NAME; /* Module info */ rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MANUFACTURER_ID, &minfo->manufacturer_id); if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U16_MODEL_ID, &minfo->model_id); if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_REVISION_NUMBER_MAJOR, &minfo->revision_number_major); if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_REVISION_NUMBER_MINOR, &minfo->revision_number_minor); if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MODULE_DATE_YEAR, &minfo->module_year); if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MODULE_DATE_MONTH, &minfo->module_month); if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MODULE_DATE_DAY, &minfo->module_day); /* Sensor info */ if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SENSOR_MANUFACTURER_ID, &minfo->sensor_manufacturer_id); if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U16_SENSOR_MODEL_ID, &minfo->sensor_model_id); if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SENSOR_REVISION_NUMBER, &minfo->sensor_revision_number); if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SENSOR_FIRMWARE_VERSION, &minfo->sensor_firmware_version); /* SMIA */ if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIA_VERSION, &minfo->smia_version); if (!rval) rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIAPP_VERSION, &minfo->smiapp_version); if (rval) { dev_err(&client->dev, "sensor detection failed\n"); return -ENODEV; } dev_dbg(&client->dev, "module 0x%2.2x-0x%4.4x\n", minfo->manufacturer_id, minfo->model_id); dev_dbg(&client->dev, "module revision 0x%2.2x-0x%2.2x date %2.2d-%2.2d-%2.2d\n", minfo->revision_number_major, minfo->revision_number_minor, minfo->module_year, minfo->module_month, minfo->module_day); dev_dbg(&client->dev, "sensor 0x%2.2x-0x%4.4x\n", minfo->sensor_manufacturer_id, minfo->sensor_model_id); dev_dbg(&client->dev, "sensor revision 0x%2.2x firmware version 0x%2.2x\n", minfo->sensor_revision_number, minfo->sensor_firmware_version); dev_dbg(&client->dev, "smia version %2.2d smiapp version %2.2d\n", minfo->smia_version, minfo->smiapp_version); /* * Some modules have bad data in the lvalues below. Hope the * rvalues have better stuff. The lvalues are module * parameters whereas the rvalues are sensor parameters. */ if (!minfo->manufacturer_id && !minfo->model_id) { minfo->manufacturer_id = minfo->sensor_manufacturer_id; minfo->model_id = minfo->sensor_model_id; minfo->revision_number_major = minfo->sensor_revision_number; } for (i = 0; i < ARRAY_SIZE(smiapp_module_idents); i++) { if (smiapp_module_idents[i].manufacturer_id != minfo->manufacturer_id) continue; if (smiapp_module_idents[i].model_id != minfo->model_id) continue; if (smiapp_module_idents[i].flags & SMIAPP_MODULE_IDENT_FLAG_REV_LE) { if (smiapp_module_idents[i].revision_number_major < minfo->revision_number_major) continue; } else { if (smiapp_module_idents[i].revision_number_major != minfo->revision_number_major) continue; } minfo->name = smiapp_module_idents[i].name; minfo->quirk = smiapp_module_idents[i].quirk; break; } if (i >= ARRAY_SIZE(smiapp_module_idents)) dev_warn(&client->dev, "no quirks for this module; let's hope it's fully compliant\n"); dev_dbg(&client->dev, "the sensor is called %s, ident %2.2x%4.4x%2.2x\n", minfo->name, minfo->manufacturer_id, minfo->model_id, minfo->revision_number_major); strlcpy(subdev->name, sensor->minfo.name, sizeof(subdev->name)); return 0; } static const struct v4l2_subdev_ops smiapp_ops; static const struct v4l2_subdev_internal_ops smiapp_internal_ops; static const struct media_entity_operations smiapp_entity_ops; static int smiapp_registered(struct v4l2_subdev *subdev) { struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); struct i2c_client *client = v4l2_get_subdevdata(subdev); struct smiapp_pll *pll = &sensor->pll; struct smiapp_subdev *last = NULL; u32 tmp; unsigned int i; int rval; sensor->vana = devm_regulator_get(&client->dev, "vana"); if (IS_ERR(sensor->vana)) { dev_err(&client->dev, "could not get regulator for vana\n"); return PTR_ERR(sensor->vana); } if (!sensor->platform_data->set_xclk) { sensor->ext_clk = devm_clk_get(&client->dev, "ext_clk"); if (IS_ERR(sensor->ext_clk)) { dev_err(&client->dev, "could not get clock\n"); return PTR_ERR(sensor->ext_clk); } rval = clk_set_rate(sensor->ext_clk, sensor->platform_data->ext_clk); if (rval < 0) { dev_err(&client->dev, "unable to set clock freq to %u\n", sensor->platform_data->ext_clk); return rval; } } if (gpio_is_valid(sensor->platform_data->xshutdown)) { rval = devm_gpio_request_one( &client->dev, sensor->platform_data->xshutdown, 0, "SMIA++ xshutdown"); if (rval < 0) { dev_err(&client->dev, "unable to acquire reset gpio %d\n", sensor->platform_data->xshutdown); return rval; } } rval = smiapp_power_on(sensor); if (rval) return -ENODEV; rval = smiapp_identify_module(subdev); if (rval) { rval = -ENODEV; goto out_power_off; } rval = smiapp_get_all_limits(sensor); if (rval) { rval = -ENODEV; goto out_power_off; } /* * Handle Sensor Module orientation on the board. * * The application of H-FLIP and V-FLIP on the sensor is modified by * the sensor orientation on the board. * * For SMIAPP_BOARD_SENSOR_ORIENT_180 the default behaviour is to set * both H-FLIP and V-FLIP for normal operation which also implies * that a set/unset operation for user space HFLIP and VFLIP v4l2 * controls will need to be internally inverted. * * Rotation also changes the bayer pattern. */ if (sensor->platform_data->module_board_orient == SMIAPP_MODULE_BOARD_ORIENT_180) sensor->hvflip_inv_mask = SMIAPP_IMAGE_ORIENTATION_HFLIP | SMIAPP_IMAGE_ORIENTATION_VFLIP; rval = smiapp_call_quirk(sensor, limits); if (rval) { dev_err(&client->dev, "limits quirks failed\n"); goto out_power_off; } rval = smiapp_get_mbus_formats(sensor); if (rval) { rval = -ENODEV; goto out_power_off; } if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY]) { u32 val; rval = smiapp_read(sensor, SMIAPP_REG_U8_BINNING_SUBTYPES, &val); if (rval < 0) { rval = -ENODEV; goto out_power_off; } sensor->nbinning_subtypes = min_t(u8, val, SMIAPP_BINNING_SUBTYPES); for (i = 0; i < sensor->nbinning_subtypes; i++) { rval = smiapp_read( sensor, SMIAPP_REG_U8_BINNING_TYPE_n(i), &val); if (rval < 0) { rval = -ENODEV; goto out_power_off; } sensor->binning_subtypes[i] = *(struct smiapp_binning_subtype *)&val; dev_dbg(&client->dev, "binning %xx%x\n", sensor->binning_subtypes[i].horizontal, sensor->binning_subtypes[i].vertical); } } sensor->binning_horizontal = 1; sensor->binning_vertical = 1; if (device_create_file(&client->dev, &dev_attr_ident) != 0) { dev_err(&client->dev, "sysfs ident entry creation failed\n"); rval = -ENOENT; goto out_power_off; } /* SMIA++ NVM initialization - it will be read from the sensor * when it is first requested by userspace. */ if (sensor->minfo.smiapp_version && sensor->platform_data->nvm_size) { sensor->nvm = devm_kzalloc(&client->dev, sensor->platform_data->nvm_size, GFP_KERNEL); if (sensor->nvm == NULL) { dev_err(&client->dev, "nvm buf allocation failed\n"); rval = -ENOMEM; goto out_ident_release; } if (device_create_file(&client->dev, &dev_attr_nvm) != 0) { dev_err(&client->dev, "sysfs nvm entry failed\n"); rval = -EBUSY; goto out_ident_release; } } /* We consider this as profile 0 sensor if any of these are zero. */ if (!sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV] || !sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV] || !sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV] || !sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV]) { sensor->minfo.smiapp_profile = SMIAPP_PROFILE_0; } else if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY] != SMIAPP_SCALING_CAPABILITY_NONE) { if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY] == SMIAPP_SCALING_CAPABILITY_HORIZONTAL) sensor->minfo.smiapp_profile = SMIAPP_PROFILE_1; else sensor->minfo.smiapp_profile = SMIAPP_PROFILE_2; sensor->scaler = &sensor->ssds[sensor->ssds_used]; sensor->ssds_used++; } else if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY] == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) { sensor->scaler = &sensor->ssds[sensor->ssds_used]; sensor->ssds_used++; } sensor->binner = &sensor->ssds[sensor->ssds_used]; sensor->ssds_used++; sensor->pixel_array = &sensor->ssds[sensor->ssds_used]; sensor->ssds_used++; sensor->scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]; for (i = 0; i < SMIAPP_SUBDEVS; i++) { struct { struct smiapp_subdev *ssd; char *name; } const __this[] = { { sensor->scaler, "scaler", }, { sensor->binner, "binner", }, { sensor->pixel_array, "pixel array", }, }, *_this = &__this[i]; struct smiapp_subdev *this = _this->ssd; if (!this) continue; if (this != sensor->src) v4l2_subdev_init(&this->sd, &smiapp_ops); this->sensor = sensor; if (this == sensor->pixel_array) { this->npads = 1; } else { this->npads = 2; this->source_pad = 1; } snprintf(this->sd.name, sizeof(this->sd.name), "%s %s %d-%4.4x", sensor->minfo.name, _this->name, i2c_adapter_id(client->adapter), client->addr); this->sink_fmt.width = sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1; this->sink_fmt.height = sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1; this->compose.width = this->sink_fmt.width; this->compose.height = this->sink_fmt.height; this->crop[this->source_pad] = this->compose; this->pads[this->source_pad].flags = MEDIA_PAD_FL_SOURCE; if (this != sensor->pixel_array) { this->crop[this->sink_pad] = this->compose; this->pads[this->sink_pad].flags = MEDIA_PAD_FL_SINK; } this->sd.entity.ops = &smiapp_entity_ops; if (last == NULL) { last = this; continue; } this->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; this->sd.internal_ops = &smiapp_internal_ops; this->sd.owner = NULL; v4l2_set_subdevdata(&this->sd, client); rval = media_entity_init(&this->sd.entity, this->npads, this->pads, 0); if (rval) { dev_err(&client->dev, "media_entity_init failed\n"); goto out_nvm_release; } rval = media_entity_create_link(&this->sd.entity, this->source_pad, &last->sd.entity, last->sink_pad, MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); if (rval) { dev_err(&client->dev, "media_entity_create_link failed\n"); goto out_nvm_release; } rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev, &this->sd); if (rval) { dev_err(&client->dev, "v4l2_device_register_subdev failed\n"); goto out_nvm_release; } last = this; } dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile); sensor->pixel_array->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; /* final steps */ smiapp_read_frame_fmt(sensor); rval = smiapp_init_controls(sensor); if (rval < 0) goto out_nvm_release; /* prepare PLL configuration input values */ pll->bus_type = SMIAPP_PLL_BUS_TYPE_CSI2; pll->csi2.lanes = sensor->platform_data->lanes; pll->ext_clk_freq_hz = sensor->platform_data->ext_clk; pll->flags = smiapp_call_quirk(sensor, pll_flags); /* Profile 0 sensors have no separate OP clock branch. */ if (sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0) pll->flags |= SMIAPP_PLL_FLAG_NO_OP_CLOCKS; pll->scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]; rval = smiapp_update_mode(sensor); if (rval) { dev_err(&client->dev, "update mode failed\n"); goto out_nvm_release; } sensor->streaming = false; sensor->dev_init_done = true; /* check flash capability */ rval = smiapp_read(sensor, SMIAPP_REG_U8_FLASH_MODE_CAPABILITY, &tmp); sensor->flash_capability = tmp; if (rval) goto out_nvm_release; smiapp_power_off(sensor); return 0; out_nvm_release: device_remove_file(&client->dev, &dev_attr_nvm); out_ident_release: device_remove_file(&client->dev, &dev_attr_ident); out_power_off: smiapp_power_off(sensor); return rval; } static int smiapp_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct smiapp_subdev *ssd = to_smiapp_subdev(sd); struct smiapp_sensor *sensor = ssd->sensor; u32 mbus_code = smiapp_csi_data_formats[smiapp_pixel_order(sensor)].code; unsigned int i; mutex_lock(&sensor->mutex); for (i = 0; i < ssd->npads; i++) { struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(fh, i); struct v4l2_rect *try_crop = v4l2_subdev_get_try_crop(fh, i); struct v4l2_rect *try_comp; try_fmt->width = sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1; try_fmt->height = sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1; try_fmt->code = mbus_code; try_fmt->field = V4L2_FIELD_NONE; try_crop->top = 0; try_crop->left = 0; try_crop->width = try_fmt->width; try_crop->height = try_fmt->height; if (ssd != sensor->pixel_array) continue; try_comp = v4l2_subdev_get_try_compose(fh, i); *try_comp = *try_crop; } mutex_unlock(&sensor->mutex); return smiapp_set_power(sd, 1); } static int smiapp_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { return smiapp_set_power(sd, 0); } static const struct v4l2_subdev_video_ops smiapp_video_ops = { .s_stream = smiapp_set_stream, }; static const struct v4l2_subdev_core_ops smiapp_core_ops = { .s_power = smiapp_set_power, }; static const struct v4l2_subdev_pad_ops smiapp_pad_ops = { .enum_mbus_code = smiapp_enum_mbus_code, .get_fmt = smiapp_get_format, .set_fmt = smiapp_set_format, .get_selection = smiapp_get_selection, .set_selection = smiapp_set_selection, }; static const struct v4l2_subdev_sensor_ops smiapp_sensor_ops = { .g_skip_frames = smiapp_get_skip_frames, }; static const struct v4l2_subdev_ops smiapp_ops = { .core = &smiapp_core_ops, .video = &smiapp_video_ops, .pad = &smiapp_pad_ops, .sensor = &smiapp_sensor_ops, }; static const struct media_entity_operations smiapp_entity_ops = { .link_validate = v4l2_subdev_link_validate, }; static const struct v4l2_subdev_internal_ops smiapp_internal_src_ops = { .registered = smiapp_registered, .open = smiapp_open, .close = smiapp_close, }; static const struct v4l2_subdev_internal_ops smiapp_internal_ops = { .open = smiapp_open, .close = smiapp_close, }; /* ----------------------------------------------------------------------------- * I2C Driver */ #ifdef CONFIG_PM static int smiapp_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *subdev = i2c_get_clientdata(client); struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); bool streaming; BUG_ON(mutex_is_locked(&sensor->mutex)); if (sensor->power_count == 0) return 0; if (sensor->streaming) smiapp_stop_streaming(sensor); streaming = sensor->streaming; smiapp_power_off(sensor); /* save state for resume */ sensor->streaming = streaming; return 0; } static int smiapp_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *subdev = i2c_get_clientdata(client); struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); int rval; if (sensor->power_count == 0) return 0; rval = smiapp_power_on(sensor); if (rval) return rval; if (sensor->streaming) rval = smiapp_start_streaming(sensor); return rval; } #else #define smiapp_suspend NULL #define smiapp_resume NULL #endif /* CONFIG_PM */ static int smiapp_probe(struct i2c_client *client, const struct i2c_device_id *devid) { struct smiapp_sensor *sensor; if (client->dev.platform_data == NULL) return -ENODEV; sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL); if (sensor == NULL) return -ENOMEM; sensor->platform_data = client->dev.platform_data; mutex_init(&sensor->mutex); mutex_init(&sensor->power_mutex); sensor->src = &sensor->ssds[sensor->ssds_used]; v4l2_i2c_subdev_init(&sensor->src->sd, client, &smiapp_ops); sensor->src->sd.internal_ops = &smiapp_internal_src_ops; sensor->src->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; sensor->src->sensor = sensor; sensor->src->pads[0].flags = MEDIA_PAD_FL_SOURCE; return media_entity_init(&sensor->src->sd.entity, 2, sensor->src->pads, 0); } static int smiapp_remove(struct i2c_client *client) { struct v4l2_subdev *subdev = i2c_get_clientdata(client); struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); unsigned int i; if (sensor->power_count) { if (gpio_is_valid(sensor->platform_data->xshutdown)) gpio_set_value(sensor->platform_data->xshutdown, 0); if (sensor->platform_data->set_xclk) sensor->platform_data->set_xclk(&sensor->src->sd, 0); else clk_disable_unprepare(sensor->ext_clk); sensor->power_count = 0; } device_remove_file(&client->dev, &dev_attr_ident); if (sensor->nvm) device_remove_file(&client->dev, &dev_attr_nvm); for (i = 0; i < sensor->ssds_used; i++) { v4l2_device_unregister_subdev(&sensor->ssds[i].sd); media_entity_cleanup(&sensor->ssds[i].sd.entity); } smiapp_free_controls(sensor); return 0; } static const struct i2c_device_id smiapp_id_table[] = { { SMIAPP_NAME, 0 }, { }, }; MODULE_DEVICE_TABLE(i2c, smiapp_id_table); static const struct dev_pm_ops smiapp_pm_ops = { .suspend = smiapp_suspend, .resume = smiapp_resume, }; static struct i2c_driver smiapp_i2c_driver = { .driver = { .name = SMIAPP_NAME, .pm = &smiapp_pm_ops, }, .probe = smiapp_probe, .remove = smiapp_remove, .id_table = smiapp_id_table, }; module_i2c_driver(smiapp_i2c_driver); MODULE_AUTHOR("Sakari Ailus "); MODULE_DESCRIPTION("Generic SMIA/SMIA++ camera module driver"); MODULE_LICENSE("GPL");