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path: root/drivers/media/i2c/smiapp/smiapp-core.c
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Diffstat (limited to 'drivers/media/i2c/smiapp/smiapp-core.c')
-rw-r--r--drivers/media/i2c/smiapp/smiapp-core.c2895
1 files changed, 2895 insertions, 0 deletions
diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
new file mode 100644
index 000000000000..1cf914d11345
--- /dev/null
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -0,0 +1,2895 @@
+/*
+ * drivers/media/i2c/smiapp/smiapp-core.c
+ *
+ * Generic driver for SMIA/SMIA++ compliant camera modules
+ *
+ * Copyright (C) 2010--2012 Nokia Corporation
+ * Contact: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
+ *
+ * Based on smiapp driver by Vimarsh Zutshi
+ * Based on jt8ev1.c by Vimarsh Zutshi
+ * Based on smia-sensor.c by Tuukka Toivonen <tuukkat76@gmail.com>
+ *
+ * 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 <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/regulator/consumer.h>
+#include <linux/v4l2-mediabus.h>
+#include <media/v4l2-device.h>
+
+#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],
+
+ .min_op_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV],
+ .max_op_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV],
+ .min_op_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV],
+ .max_op_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV],
+ .min_op_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_FREQ_HZ],
+ .max_op_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_FREQ_HZ],
+ .min_op_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_FREQ_HZ],
+ .max_op_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_FREQ_HZ],
+
+ .min_vt_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_DIV],
+ .max_vt_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_DIV],
+ .min_vt_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_DIV],
+ .max_vt_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_DIV],
+ .min_vt_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_FREQ_HZ],
+ .max_vt_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_FREQ_HZ],
+ .min_vt_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_FREQ_HZ],
+ .max_vt_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;
+
+ memset(&sensor->pll, 0, sizeof(sensor->pll));
+
+ pll->lanes = sensor->platform_data->lanes;
+ pll->ext_clk_freq_hz = sensor->platform_data->ext_clk;
+
+ 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.min_op_sys_clk_div = lim.min_vt_sys_clk_div;
+ lim.max_op_sys_clk_div = lim.max_vt_sys_clk_div;
+ lim.min_op_pix_clk_div = lim.min_vt_pix_clk_div;
+ lim.max_op_pix_clk_div = lim.max_vt_pix_clk_div;
+ lim.min_op_sys_clk_freq_hz = lim.min_vt_sys_clk_freq_hz;
+ lim.max_op_sys_clk_freq_hz = lim.max_vt_sys_clk_freq_hz;
+ lim.min_op_pix_clk_freq_hz = lim.min_vt_pix_clk_freq_hz;
+ lim.max_op_pix_clk_freq_hz = lim.max_vt_pix_clk_freq_hz;
+ /* Profile 0 sensors have no separate OP clock branch. */
+ pll->flags |= SMIAPP_PLL_FLAG_NO_OP_CLOCKS;
+ }
+
+ if (smiapp_needs_quirk(sensor,
+ SMIAPP_QUIRK_FLAG_OP_PIX_CLOCK_PER_LANE))
+ pll->flags |= SMIAPP_PLL_FLAG_OP_PIX_CLOCK_PER_LANE;
+
+ 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->scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
+ pll->bits_per_pixel = sensor->csi_format->compressed;
+
+ rval = smiapp_pll_calculate(&client->dev, &lim, pll);
+ if (rval < 0)
+ return rval;
+
+ sensor->pixel_rate_parray->cur.val64 = pll->vt_pix_clk_freq_hz;
+ sensor->pixel_rate_csi->cur.val64 = 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];
+
+ ctrl->maximum = max;
+ if (ctrl->default_value > max)
+ ctrl->default_value = max;
+ if (ctrl->val > max)
+ ctrl->val = max;
+ if (ctrl->cur.val > max)
+ ctrl->cur.val = 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));
+ BUG_ON(min(internal_csi_format_idx, csi_format_idx) < 0);
+
+ dev_dbg(&client->dev, "new pixel order %s\n",
+ pixel_order_str[pixel_order]);
+}
+
+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);
+
+ 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;
+ int rval;
+
+ rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 7);
+ 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, 0, 0, 1, 0);
+
+ 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, 0, 0, 1, 0);
+
+ 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\" = %d, 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, "bpp %d, compressed %d\n",
+ 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) {
+ 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;
+
+ vblank->minimum =
+ 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);
+ vblank->maximum =
+ sensor->limits[SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN] -
+ sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height;
+
+ vblank->val = clamp_t(int, vblank->val,
+ vblank->minimum, vblank->maximum);
+ vblank->default_value = vblank->minimum;
+ vblank->val = vblank->val;
+ vblank->cur.val = vblank->val;
+
+ hblank->minimum =
+ 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]);
+ hblank->maximum =
+ sensor->limits[SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN] -
+ sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width;
+
+ hblank->val = clamp_t(int, hblank->val,
+ hblank->minimum, hblank->maximum);
+ hblank->default_value = hblank->minimum;
+ hblank->val = hblank->val;
+ hblank->cur.val = hblank->val;
+
+ __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 <sakari.ailus@maxwell.research.nokia.com> 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_enable(sensor->ext_clk);
+ if (rval < 0) {
+ dev_dbg(&client->dev, "failed to set xclk\n");
+ goto out_xclk_fail;
+ }
+ usleep_range(1000, 1000);
+
+ if (sensor->platform_data->xshutdown != SMIAPP_NO_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 (sensor->platform_data->xshutdown != SMIAPP_NO_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(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 (sensor->platform_data->xshutdown != SMIAPP_NO_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(sensor->ext_clk);
+ usleep_range(5000, 5000);
+ regulator_disable(sensor->vana);
+ sensor->streaming = 0;
+}
+
+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 = 1;
+ rval = smiapp_start_streaming(sensor);
+ if (rval < 0)
+ sensor->streaming = 0;
+ } else {
+ rval = smiapp_stop_streaming(sensor);
+ sensor->streaming = 0;
+ }
+
+ 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;
+ }
+
+ 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);
+
+ 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)
+ sensor->csi_format = csi_format;
+ fmt->format.code = csi_format->code;
+ }
+
+ mutex_unlock(&sensor->mutex);
+ return rval;
+ }
+
+ /* 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.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;
+ unsigned 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 = min(sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX],
+ max(a, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN]));
+ b = min(sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX],
+ max(b, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN]));
+ max_m = min(sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX],
+ max(max_m, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN]));
+
+ 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(sel->r.left, src_size->width - sel->r.width);
+ sel->r.top = min(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 = max(0, SMIAPP_ALIGN_DIM(sel->r.width, sel->flags));
+ sel->r.height = max(0, 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);
+
+/* -----------------------------------------------------------------------------
+ * 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_subdev *last = NULL;
+ u32 tmp;
+ unsigned int i;
+ int rval;
+
+ sensor->vana = regulator_get(&client->dev, "VANA");
+ if (IS_ERR(sensor->vana)) {
+ dev_err(&client->dev, "could not get regulator for vana\n");
+ return -ENODEV;
+ }
+
+ if (!sensor->platform_data->set_xclk) {
+ sensor->ext_clk = clk_get(&client->dev,
+ sensor->platform_data->ext_clk_name);
+ if (IS_ERR(sensor->ext_clk)) {
+ dev_err(&client->dev, "could not get clock %s\n",
+ sensor->platform_data->ext_clk_name);
+ rval = -ENODEV;
+ goto out_clk_get;
+ }
+
+ rval = clk_set_rate(sensor->ext_clk,
+ sensor->platform_data->ext_clk);
+ if (rval < 0) {
+ dev_err(&client->dev,
+ "unable to set clock %s freq to %u\n",
+ sensor->platform_data->ext_clk_name,
+ sensor->platform_data->ext_clk);
+ rval = -ENODEV;
+ goto out_clk_set_rate;
+ }
+ }
+
+ if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN) {
+ if (gpio_request_one(sensor->platform_data->xshutdown, 0,
+ "SMIA++ xshutdown") != 0) {
+ dev_err(&client->dev,
+ "unable to acquire reset gpio %d\n",
+ sensor->platform_data->xshutdown);
+ rval = -ENODEV;
+ goto out_clk_set_rate;
+ }
+ }
+
+ rval = smiapp_power_on(sensor);
+ if (rval) {
+ rval = -ENODEV;
+ goto out_smiapp_power_on;
+ }
+
+ 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_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;
+
+ /* 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 = kzalloc(sensor->platform_data->nvm_size,
+ GFP_KERNEL);
+ if (sensor->nvm == NULL) {
+ dev_err(&client->dev, "nvm buf allocation failed\n");
+ rval = -ENOMEM;
+ goto out_power_off;
+ }
+
+ if (device_create_file(&client->dev, &dev_attr_nvm) != 0) {
+ dev_err(&client->dev, "sysfs nvm entry failed\n");
+ rval = -EBUSY;
+ goto out_power_off;
+ }
+ }
+
+ rval = smiapp_call_quirk(sensor, limits);
+ if (rval) {
+ dev_err(&client->dev, "limits quirks failed\n");
+ goto out_nvm_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",
+ sensor->minfo.name, _this->name);
+
+ 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;
+
+ 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_power_off:
+ kfree(sensor->nvm);
+ sensor->nvm = NULL;
+ smiapp_power_off(sensor);
+
+out_smiapp_power_on:
+ if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN)
+ gpio_free(sensor->platform_data->xshutdown);
+
+out_clk_set_rate:
+ clk_put(sensor->ext_clk);
+ sensor->ext_clk = NULL;
+
+out_clk_get:
+ regulator_put(sensor->vana);
+ sensor->vana = NULL;
+ 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_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;
+ int rval;
+
+ if (client->dev.platform_data == NULL)
+ return -ENODEV;
+
+ sensor = kzalloc(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;
+ rval = media_entity_init(&sensor->src->sd.entity, 2,
+ sensor->src->pads, 0);
+ if (rval < 0)
+ kfree(sensor);
+
+ return rval;
+}
+
+static int __exit 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 (sensor->platform_data->xshutdown != SMIAPP_NO_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(sensor->ext_clk);
+ sensor->power_count = 0;
+ }
+
+ if (sensor->nvm) {
+ device_remove_file(&client->dev, &dev_attr_nvm);
+ kfree(sensor->nvm);
+ }
+
+ for (i = 0; i < sensor->ssds_used; i++) {
+ media_entity_cleanup(&sensor->ssds[i].sd.entity);
+ v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
+ }
+ smiapp_free_controls(sensor);
+ if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN)
+ gpio_free(sensor->platform_data->xshutdown);
+ if (sensor->ext_clk)
+ clk_put(sensor->ext_clk);
+ if (sensor->vana)
+ regulator_put(sensor->vana);
+
+ kfree(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 = __exit_p(smiapp_remove),
+ .id_table = smiapp_id_table,
+};
+
+module_i2c_driver(smiapp_i2c_driver);
+
+MODULE_AUTHOR("Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>");
+MODULE_DESCRIPTION("Generic SMIA/SMIA++ camera module driver");
+MODULE_LICENSE("GPL");