--- /dev/null
+/*
+ * Driver for MT9M111/MT9M112/MT9M131 CMOS Image Sensor from Micron/Aptina
+ *
+ * Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr>
+ *
+ * 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.
+ */
+#include <linux/videodev2.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/log2.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/v4l2-mediabus.h>
+#include <linux/module.h>
+
+#include <media/v4l2-async.h>
+#include <media/v4l2-clk.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+
+/*
+ * MT9M111, MT9M112 and MT9M131:
+ * i2c address is 0x48 or 0x5d (depending on SADDR pin)
+ * The platform has to define struct i2c_board_info objects and link to them
+ * from struct soc_camera_host_desc
+ */
+
+/*
+ * Sensor core register addresses (0x000..0x0ff)
+ */
+#define MT9M111_CHIP_VERSION 0x000
+#define MT9M111_ROW_START 0x001
+#define MT9M111_COLUMN_START 0x002
+#define MT9M111_WINDOW_HEIGHT 0x003
+#define MT9M111_WINDOW_WIDTH 0x004
+#define MT9M111_HORIZONTAL_BLANKING_B 0x005
+#define MT9M111_VERTICAL_BLANKING_B 0x006
+#define MT9M111_HORIZONTAL_BLANKING_A 0x007
+#define MT9M111_VERTICAL_BLANKING_A 0x008
+#define MT9M111_SHUTTER_WIDTH 0x009
+#define MT9M111_ROW_SPEED 0x00a
+#define MT9M111_EXTRA_DELAY 0x00b
+#define MT9M111_SHUTTER_DELAY 0x00c
+#define MT9M111_RESET 0x00d
+#define MT9M111_READ_MODE_B 0x020
+#define MT9M111_READ_MODE_A 0x021
+#define MT9M111_FLASH_CONTROL 0x023
+#define MT9M111_GREEN1_GAIN 0x02b
+#define MT9M111_BLUE_GAIN 0x02c
+#define MT9M111_RED_GAIN 0x02d
+#define MT9M111_GREEN2_GAIN 0x02e
+#define MT9M111_GLOBAL_GAIN 0x02f
+#define MT9M111_CONTEXT_CONTROL 0x0c8
+#define MT9M111_PAGE_MAP 0x0f0
+#define MT9M111_BYTE_WISE_ADDR 0x0f1
+
+#define MT9M111_RESET_SYNC_CHANGES (1 << 15)
+#define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
+#define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
+#define MT9M111_RESET_RESET_SOC (1 << 5)
+#define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
+#define MT9M111_RESET_CHIP_ENABLE (1 << 3)
+#define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
+#define MT9M111_RESET_RESTART_FRAME (1 << 1)
+#define MT9M111_RESET_RESET_MODE (1 << 0)
+
+#define MT9M111_RM_FULL_POWER_RD (0 << 10)
+#define MT9M111_RM_LOW_POWER_RD (1 << 10)
+#define MT9M111_RM_COL_SKIP_4X (1 << 5)
+#define MT9M111_RM_ROW_SKIP_4X (1 << 4)
+#define MT9M111_RM_COL_SKIP_2X (1 << 3)
+#define MT9M111_RM_ROW_SKIP_2X (1 << 2)
+#define MT9M111_RMB_MIRROR_COLS (1 << 1)
+#define MT9M111_RMB_MIRROR_ROWS (1 << 0)
+#define MT9M111_CTXT_CTRL_RESTART (1 << 15)
+#define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
+#define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
+#define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
+#define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
+#define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
+#define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
+#define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
+#define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
+#define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
+
+/*
+ * Colorpipe register addresses (0x100..0x1ff)
+ */
+#define MT9M111_OPER_MODE_CTRL 0x106
+#define MT9M111_OUTPUT_FORMAT_CTRL 0x108
+#define MT9M111_REDUCER_XZOOM_B 0x1a0
+#define MT9M111_REDUCER_XSIZE_B 0x1a1
+#define MT9M111_REDUCER_YZOOM_B 0x1a3
+#define MT9M111_REDUCER_YSIZE_B 0x1a4
+#define MT9M111_REDUCER_XZOOM_A 0x1a6
+#define MT9M111_REDUCER_XSIZE_A 0x1a7
+#define MT9M111_REDUCER_YZOOM_A 0x1a9
+#define MT9M111_REDUCER_YSIZE_A 0x1aa
+
+#define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
+#define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
+
+#define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
+#define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
+#define MT9M111_OUTFMT_FLIP_BAYER_COL (1 << 9)
+#define MT9M111_OUTFMT_FLIP_BAYER_ROW (1 << 8)
+#define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
+#define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
+#define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
+#define MT9M111_OUTFMT_RGB (1 << 8)
+#define MT9M111_OUTFMT_RGB565 (0 << 6)
+#define MT9M111_OUTFMT_RGB555 (1 << 6)
+#define MT9M111_OUTFMT_RGB444x (2 << 6)
+#define MT9M111_OUTFMT_RGBx444 (3 << 6)
+#define MT9M111_OUTFMT_TST_RAMP_OFF (0 << 4)
+#define MT9M111_OUTFMT_TST_RAMP_COL (1 << 4)
+#define MT9M111_OUTFMT_TST_RAMP_ROW (2 << 4)
+#define MT9M111_OUTFMT_TST_RAMP_FRAME (3 << 4)
+#define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
+#define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
+#define MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN (1 << 1)
+#define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B (1 << 0)
+
+/*
+ * Camera control register addresses (0x200..0x2ff not implemented)
+ */
+
+#define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
+#define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
+#define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
+#define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
+#define reg_mask(reg, val, mask) mt9m111_reg_mask(client, MT9M111_##reg, \
+ (val), (mask))
+
+#define MT9M111_MIN_DARK_ROWS 8
+#define MT9M111_MIN_DARK_COLS 26
+#define MT9M111_MAX_HEIGHT 1024
+#define MT9M111_MAX_WIDTH 1280
+
+struct mt9m111_context {
+ u16 read_mode;
+ u16 blanking_h;
+ u16 blanking_v;
+ u16 reducer_xzoom;
+ u16 reducer_yzoom;
+ u16 reducer_xsize;
+ u16 reducer_ysize;
+ u16 output_fmt_ctrl2;
+ u16 control;
+};
+
+static struct mt9m111_context context_a = {
+ .read_mode = MT9M111_READ_MODE_A,
+ .blanking_h = MT9M111_HORIZONTAL_BLANKING_A,
+ .blanking_v = MT9M111_VERTICAL_BLANKING_A,
+ .reducer_xzoom = MT9M111_REDUCER_XZOOM_A,
+ .reducer_yzoom = MT9M111_REDUCER_YZOOM_A,
+ .reducer_xsize = MT9M111_REDUCER_XSIZE_A,
+ .reducer_ysize = MT9M111_REDUCER_YSIZE_A,
+ .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_A,
+ .control = MT9M111_CTXT_CTRL_RESTART,
+};
+
+static struct mt9m111_context context_b = {
+ .read_mode = MT9M111_READ_MODE_B,
+ .blanking_h = MT9M111_HORIZONTAL_BLANKING_B,
+ .blanking_v = MT9M111_VERTICAL_BLANKING_B,
+ .reducer_xzoom = MT9M111_REDUCER_XZOOM_B,
+ .reducer_yzoom = MT9M111_REDUCER_YZOOM_B,
+ .reducer_xsize = MT9M111_REDUCER_XSIZE_B,
+ .reducer_ysize = MT9M111_REDUCER_YSIZE_B,
+ .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_B,
+ .control = MT9M111_CTXT_CTRL_RESTART |
+ MT9M111_CTXT_CTRL_DEFECTCOR_B | MT9M111_CTXT_CTRL_RESIZE_B |
+ MT9M111_CTXT_CTRL_CTRL2_B | MT9M111_CTXT_CTRL_GAMMA_B |
+ MT9M111_CTXT_CTRL_READ_MODE_B | MT9M111_CTXT_CTRL_VBLANK_SEL_B |
+ MT9M111_CTXT_CTRL_HBLANK_SEL_B,
+};
+
+/* MT9M111 has only one fixed colorspace per pixelcode */
+struct mt9m111_datafmt {
+ u32 code;
+ enum v4l2_colorspace colorspace;
+};
+
+static const struct mt9m111_datafmt mt9m111_colour_fmts[] = {
+ {MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_BGR565_2X8_LE, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_BGR565_2X8_BE, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
+ {MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
+};
+
+struct mt9m111 {
+ struct v4l2_subdev subdev;
+ struct v4l2_ctrl_handler hdl;
+ struct v4l2_ctrl *gain;
+ struct mt9m111_context *ctx;
+ struct v4l2_rect rect; /* cropping rectangle */
+ struct v4l2_clk *clk;
+ unsigned int width; /* output */
+ unsigned int height; /* sizes */
+ struct mutex power_lock; /* lock to protect power_count */
+ int power_count;
+ const struct mt9m111_datafmt *fmt;
+ int lastpage; /* PageMap cache value */
+};
+
+/* Find a data format by a pixel code */
+static const struct mt9m111_datafmt *mt9m111_find_datafmt(struct mt9m111 *mt9m111,
+ u32 code)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(mt9m111_colour_fmts); i++)
+ if (mt9m111_colour_fmts[i].code == code)
+ return mt9m111_colour_fmts + i;
+
+ return mt9m111->fmt;
+}
+
+static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
+{
+ return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
+}
+
+static int reg_page_map_set(struct i2c_client *client, const u16 reg)
+{
+ int ret;
+ u16 page;
+ struct mt9m111 *mt9m111 = to_mt9m111(client);
+
+ page = (reg >> 8);
+ if (page == mt9m111->lastpage)
+ return 0;
+ if (page > 2)
+ return -EINVAL;
+
+ ret = i2c_smbus_write_word_swapped(client, MT9M111_PAGE_MAP, page);
+ if (!ret)
+ mt9m111->lastpage = page;
+ return ret;
+}
+
+static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
+{
+ int ret;
+
+ ret = reg_page_map_set(client, reg);
+ if (!ret)
+ ret = i2c_smbus_read_word_swapped(client, reg & 0xff);
+
+ dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret);
+ return ret;
+}
+
+static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
+ const u16 data)
+{
+ int ret;
+
+ ret = reg_page_map_set(client, reg);
+ if (!ret)
+ ret = i2c_smbus_write_word_swapped(client, reg & 0xff, data);
+ dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
+ return ret;
+}
+
+static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
+ const u16 data)
+{
+ int ret;
+
+ ret = mt9m111_reg_read(client, reg);
+ if (ret >= 0)
+ ret = mt9m111_reg_write(client, reg, ret | data);
+ return ret;
+}
+
+static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
+ const u16 data)
+{
+ int ret;
+
+ ret = mt9m111_reg_read(client, reg);
+ if (ret >= 0)
+ ret = mt9m111_reg_write(client, reg, ret & ~data);
+ return ret;
+}
+
+static int mt9m111_reg_mask(struct i2c_client *client, const u16 reg,
+ const u16 data, const u16 mask)
+{
+ int ret;
+
+ ret = mt9m111_reg_read(client, reg);
+ if (ret >= 0)
+ ret = mt9m111_reg_write(client, reg, (ret & ~mask) | data);
+ return ret;
+}
+
+static int mt9m111_set_context(struct mt9m111 *mt9m111,
+ struct mt9m111_context *ctx)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ return reg_write(CONTEXT_CONTROL, ctx->control);
+}
+
+static int mt9m111_setup_rect_ctx(struct mt9m111 *mt9m111,
+ struct mt9m111_context *ctx, struct v4l2_rect *rect,
+ unsigned int width, unsigned int height)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ int ret = mt9m111_reg_write(client, ctx->reducer_xzoom, rect->width);
+ if (!ret)
+ ret = mt9m111_reg_write(client, ctx->reducer_yzoom, rect->height);
+ if (!ret)
+ ret = mt9m111_reg_write(client, ctx->reducer_xsize, width);
+ if (!ret)
+ ret = mt9m111_reg_write(client, ctx->reducer_ysize, height);
+ return ret;
+}
+
+static int mt9m111_setup_geometry(struct mt9m111 *mt9m111, struct v4l2_rect *rect,
+ int width, int height, u32 code)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ int ret;
+
+ ret = reg_write(COLUMN_START, rect->left);
+ if (!ret)
+ ret = reg_write(ROW_START, rect->top);
+
+ if (!ret)
+ ret = reg_write(WINDOW_WIDTH, rect->width);
+ if (!ret)
+ ret = reg_write(WINDOW_HEIGHT, rect->height);
+
+ if (code != MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) {
+ /* IFP in use, down-scaling possible */
+ if (!ret)
+ ret = mt9m111_setup_rect_ctx(mt9m111, &context_b,
+ rect, width, height);
+ if (!ret)
+ ret = mt9m111_setup_rect_ctx(mt9m111, &context_a,
+ rect, width, height);
+ }
+
+ dev_dbg(&client->dev, "%s(%x): %ux%u@%u:%u -> %ux%u = %d\n",
+ __func__, code, rect->width, rect->height, rect->left, rect->top,
+ width, height, ret);
+
+ return ret;
+}
+
+static int mt9m111_enable(struct mt9m111 *mt9m111)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ return reg_write(RESET, MT9M111_RESET_CHIP_ENABLE);
+}
+
+static int mt9m111_reset(struct mt9m111 *mt9m111)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ int ret;
+
+ ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
+ if (!ret)
+ ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
+ if (!ret)
+ ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
+ | MT9M111_RESET_RESET_SOC);
+
+ return ret;
+}
+
+static int mt9m111_set_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_selection *sel)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct mt9m111 *mt9m111 = to_mt9m111(client);
+ struct v4l2_rect rect = sel->r;
+ int width, height;
+ int ret, align = 0;
+
+ if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
+ sel->target != V4L2_SEL_TGT_CROP)
+ return -EINVAL;
+
+ if (mt9m111->fmt->code == MEDIA_BUS_FMT_SBGGR8_1X8 ||
+ mt9m111->fmt->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) {
+ /* Bayer format - even size lengths */
+ align = 1;
+ /* Let the user play with the starting pixel */
+ }
+
+ /* FIXME: the datasheet doesn't specify minimum sizes */
+ v4l_bound_align_image(&rect.width, 2, MT9M111_MAX_WIDTH, align,
+ &rect.height, 2, MT9M111_MAX_HEIGHT, align, 0);
+ rect.left = clamp(rect.left, MT9M111_MIN_DARK_COLS,
+ MT9M111_MIN_DARK_COLS + MT9M111_MAX_WIDTH -
+ (__s32)rect.width);
+ rect.top = clamp(rect.top, MT9M111_MIN_DARK_ROWS,
+ MT9M111_MIN_DARK_ROWS + MT9M111_MAX_HEIGHT -
+ (__s32)rect.height);
+
+ width = min(mt9m111->width, rect.width);
+ height = min(mt9m111->height, rect.height);
+
+ ret = mt9m111_setup_geometry(mt9m111, &rect, width, height, mt9m111->fmt->code);
+ if (!ret) {
+ mt9m111->rect = rect;
+ mt9m111->width = width;
+ mt9m111->height = height;
+ }
+
+ return ret;
+}
+
+static int mt9m111_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_selection *sel)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct mt9m111 *mt9m111 = to_mt9m111(client);
+
+ if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ sel->r.left = MT9M111_MIN_DARK_COLS;
+ sel->r.top = MT9M111_MIN_DARK_ROWS;
+ sel->r.width = MT9M111_MAX_WIDTH;
+ sel->r.height = MT9M111_MAX_HEIGHT;
+ return 0;
+ case V4L2_SEL_TGT_CROP:
+ sel->r = mt9m111->rect;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int mt9m111_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct v4l2_mbus_framefmt *mf = &format->format;
+ struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
+
+ if (format->pad)
+ return -EINVAL;
+
+ mf->width = mt9m111->width;
+ mf->height = mt9m111->height;
+ mf->code = mt9m111->fmt->code;
+ mf->colorspace = mt9m111->fmt->colorspace;
+ mf->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111,
+ u32 code)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ u16 data_outfmt2, mask_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
+ MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB |
+ MT9M111_OUTFMT_RGB565 | MT9M111_OUTFMT_RGB555 |
+ MT9M111_OUTFMT_RGB444x | MT9M111_OUTFMT_RGBx444 |
+ MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
+ MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
+ int ret;
+
+ switch (code) {
+ case MEDIA_BUS_FMT_SBGGR8_1X8:
+ data_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
+ MT9M111_OUTFMT_RGB;
+ break;
+ case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE:
+ data_outfmt2 = MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB;
+ break;
+ case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE:
+ data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555 |
+ MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
+ break;
+ case MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE:
+ data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
+ break;
+ case MEDIA_BUS_FMT_RGB565_2X8_LE:
+ data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
+ MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
+ break;
+ case MEDIA_BUS_FMT_RGB565_2X8_BE:
+ data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
+ break;
+ case MEDIA_BUS_FMT_BGR565_2X8_BE:
+ data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
+ MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
+ break;
+ case MEDIA_BUS_FMT_BGR565_2X8_LE:
+ data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
+ MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
+ MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
+ break;
+ case MEDIA_BUS_FMT_UYVY8_2X8:
+ data_outfmt2 = 0;
+ break;
+ case MEDIA_BUS_FMT_VYUY8_2X8:
+ data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
+ break;
+ case MEDIA_BUS_FMT_YUYV8_2X8:
+ data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
+ break;
+ case MEDIA_BUS_FMT_YVYU8_2X8:
+ data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
+ MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
+ break;
+ default:
+ dev_err(&client->dev, "Pixel format not handled: %x\n", code);
+ return -EINVAL;
+ }
+
+ ret = mt9m111_reg_mask(client, context_a.output_fmt_ctrl2,
+ data_outfmt2, mask_outfmt2);
+ if (!ret)
+ ret = mt9m111_reg_mask(client, context_b.output_fmt_ctrl2,
+ data_outfmt2, mask_outfmt2);
+
+ return ret;
+}
+
+static int mt9m111_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct v4l2_mbus_framefmt *mf = &format->format;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
+ const struct mt9m111_datafmt *fmt;
+ struct v4l2_rect *rect = &mt9m111->rect;
+ bool bayer;
+ int ret;
+
+ if (format->pad)
+ return -EINVAL;
+
+ fmt = mt9m111_find_datafmt(mt9m111, mf->code);
+
+ bayer = fmt->code == MEDIA_BUS_FMT_SBGGR8_1X8 ||
+ fmt->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE;
+
+ /*
+ * With Bayer format enforce even side lengths, but let the user play
+ * with the starting pixel
+ */
+ if (bayer) {
+ rect->width = ALIGN(rect->width, 2);
+ rect->height = ALIGN(rect->height, 2);
+ }
+
+ if (fmt->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) {
+ /* IFP bypass mode, no scaling */
+ mf->width = rect->width;
+ mf->height = rect->height;
+ } else {
+ /* No upscaling */
+ if (mf->width > rect->width)
+ mf->width = rect->width;
+ if (mf->height > rect->height)
+ mf->height = rect->height;
+ }
+
+ dev_dbg(&client->dev, "%s(): %ux%u, code=%x\n", __func__,
+ mf->width, mf->height, fmt->code);
+
+ mf->code = fmt->code;
+ mf->colorspace = fmt->colorspace;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+ cfg->try_fmt = *mf;
+ return 0;
+ }
+
+ ret = mt9m111_setup_geometry(mt9m111, rect, mf->width, mf->height, mf->code);
+ if (!ret)
+ ret = mt9m111_set_pixfmt(mt9m111, mf->code);
+ if (!ret) {
+ mt9m111->width = mf->width;
+ mt9m111->height = mf->height;
+ mt9m111->fmt = fmt;
+ }
+
+ return ret;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int mt9m111_g_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int val;
+
+ if (reg->reg > 0x2ff)
+ return -EINVAL;
+
+ val = mt9m111_reg_read(client, reg->reg);
+ reg->size = 2;
+ reg->val = (u64)val;
+
+ if (reg->val > 0xffff)
+ return -EIO;
+
+ return 0;
+}
+
+static int mt9m111_s_register(struct v4l2_subdev *sd,
+ const struct v4l2_dbg_register *reg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ if (reg->reg > 0x2ff)
+ return -EINVAL;
+
+ if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
+ return -EIO;
+
+ return 0;
+}
+#endif
+
+static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ int ret;
+
+ if (flip)
+ ret = mt9m111_reg_set(client, mt9m111->ctx->read_mode, mask);
+ else
+ ret = mt9m111_reg_clear(client, mt9m111->ctx->read_mode, mask);
+
+ return ret;
+}
+
+static int mt9m111_get_global_gain(struct mt9m111 *mt9m111)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ int data;
+
+ data = reg_read(GLOBAL_GAIN);
+ if (data >= 0)
+ return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
+ (1 << ((data >> 9) & 1));
+ return data;
+}
+
+static int mt9m111_set_global_gain(struct mt9m111 *mt9m111, int gain)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ u16 val;
+
+ if (gain > 63 * 2 * 2)
+ return -EINVAL;
+
+ if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
+ val = (1 << 10) | (1 << 9) | (gain / 4);
+ else if ((gain >= 64) && (gain < 64 * 2))
+ val = (1 << 9) | (gain / 2);
+ else
+ val = gain;
+
+ return reg_write(GLOBAL_GAIN, val);
+}
+
+static int mt9m111_set_autoexposure(struct mt9m111 *mt9m111, int val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+
+ if (val == V4L2_EXPOSURE_AUTO)
+ return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
+ return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
+}
+
+static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+
+ if (on)
+ return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
+ return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
+}
+
+static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct mt9m111 *mt9m111 = container_of(ctrl->handler,
+ struct mt9m111, hdl);
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ return mt9m111_set_flip(mt9m111, ctrl->val,
+ MT9M111_RMB_MIRROR_ROWS);
+ case V4L2_CID_HFLIP:
+ return mt9m111_set_flip(mt9m111, ctrl->val,
+ MT9M111_RMB_MIRROR_COLS);
+ case V4L2_CID_GAIN:
+ return mt9m111_set_global_gain(mt9m111, ctrl->val);
+ case V4L2_CID_EXPOSURE_AUTO:
+ return mt9m111_set_autoexposure(mt9m111, ctrl->val);
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ return mt9m111_set_autowhitebalance(mt9m111, ctrl->val);
+ }
+
+ return -EINVAL;
+}
+
+static int mt9m111_suspend(struct mt9m111 *mt9m111)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ int ret;
+
+ v4l2_ctrl_s_ctrl(mt9m111->gain, mt9m111_get_global_gain(mt9m111));
+
+ ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
+ if (!ret)
+ ret = reg_set(RESET, MT9M111_RESET_RESET_SOC |
+ MT9M111_RESET_OUTPUT_DISABLE |
+ MT9M111_RESET_ANALOG_STANDBY);
+ if (!ret)
+ ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
+
+ return ret;
+}
+
+static void mt9m111_restore_state(struct mt9m111 *mt9m111)
+{
+ mt9m111_set_context(mt9m111, mt9m111->ctx);
+ mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code);
+ mt9m111_setup_geometry(mt9m111, &mt9m111->rect,
+ mt9m111->width, mt9m111->height, mt9m111->fmt->code);
+ v4l2_ctrl_handler_setup(&mt9m111->hdl);
+}
+
+static int mt9m111_resume(struct mt9m111 *mt9m111)
+{
+ int ret = mt9m111_enable(mt9m111);
+ if (!ret)
+ ret = mt9m111_reset(mt9m111);
+ if (!ret)
+ mt9m111_restore_state(mt9m111);
+
+ return ret;
+}
+
+static int mt9m111_init(struct mt9m111 *mt9m111)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ int ret;
+
+ ret = mt9m111_enable(mt9m111);
+ if (!ret)
+ ret = mt9m111_reset(mt9m111);
+ if (!ret)
+ ret = mt9m111_set_context(mt9m111, mt9m111->ctx);
+ if (ret)
+ dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
+ return ret;
+}
+
+static int mt9m111_power_on(struct mt9m111 *mt9m111)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
+ int ret;
+
+ ret = v4l2_clk_enable(mt9m111->clk);
+ if (ret < 0)
+ return ret;
+
+ ret = mt9m111_resume(mt9m111);
+ if (ret < 0) {
+ dev_err(&client->dev, "Failed to resume the sensor: %d\n", ret);
+ v4l2_clk_disable(mt9m111->clk);
+ }
+
+ return ret;
+}
+
+static void mt9m111_power_off(struct mt9m111 *mt9m111)
+{
+ mt9m111_suspend(mt9m111);
+ v4l2_clk_disable(mt9m111->clk);
+}
+
+static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
+{
+ struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
+ int ret = 0;
+
+ mutex_lock(&mt9m111->power_lock);
+
+ /*
+ * If the power count is modified from 0 to != 0 or from != 0 to 0,
+ * update the power state.
+ */
+ if (mt9m111->power_count == !on) {
+ if (on)
+ ret = mt9m111_power_on(mt9m111);
+ else
+ mt9m111_power_off(mt9m111);
+ }
+
+ if (!ret) {
+ /* Update the power count. */
+ mt9m111->power_count += on ? 1 : -1;
+ WARN_ON(mt9m111->power_count < 0);
+ }
+
+ mutex_unlock(&mt9m111->power_lock);
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
+ .s_ctrl = mt9m111_s_ctrl,
+};
+
+static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
+ .s_power = mt9m111_s_power,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = mt9m111_g_register,
+ .s_register = mt9m111_s_register,
+#endif
+};
+
+static int mt9m111_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->pad || code->index >= ARRAY_SIZE(mt9m111_colour_fmts))
+ return -EINVAL;
+
+ code->code = mt9m111_colour_fmts[code->index].code;
+ return 0;
+}
+
+static int mt9m111_g_mbus_config(struct v4l2_subdev *sd,
+ struct v4l2_mbus_config *cfg)
+{
+ cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
+ V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
+ V4L2_MBUS_DATA_ACTIVE_HIGH;
+ cfg->type = V4L2_MBUS_PARALLEL;
+
+ return 0;
+}
+
+static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
+ .g_mbus_config = mt9m111_g_mbus_config,
+};
+
+static const struct v4l2_subdev_pad_ops mt9m111_subdev_pad_ops = {
+ .enum_mbus_code = mt9m111_enum_mbus_code,
+ .get_selection = mt9m111_get_selection,
+ .set_selection = mt9m111_set_selection,
+ .get_fmt = mt9m111_get_fmt,
+ .set_fmt = mt9m111_set_fmt,
+};
+
+static struct v4l2_subdev_ops mt9m111_subdev_ops = {
+ .core = &mt9m111_subdev_core_ops,
+ .video = &mt9m111_subdev_video_ops,
+ .pad = &mt9m111_subdev_pad_ops,
+};
+
+/*
+ * Interface active, can use i2c. If it fails, it can indeed mean, that
+ * this wasn't our capture interface, so, we wait for the right one
+ */
+static int mt9m111_video_probe(struct i2c_client *client)
+{
+ struct mt9m111 *mt9m111 = to_mt9m111(client);
+ s32 data;
+ int ret;
+
+ ret = mt9m111_s_power(&mt9m111->subdev, 1);
+ if (ret < 0)
+ return ret;
+
+ data = reg_read(CHIP_VERSION);
+
+ switch (data) {
+ case 0x143a: /* MT9M111 or MT9M131 */
+ dev_info(&client->dev,
+ "Detected a MT9M111/MT9M131 chip ID %x\n", data);
+ break;
+ case 0x148c: /* MT9M112 */
+ dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
+ break;
+ default:
+ dev_err(&client->dev,
+ "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
+ data);
+ ret = -ENODEV;
+ goto done;
+ }
+
+ ret = mt9m111_init(mt9m111);
+ if (ret)
+ goto done;
+
+ ret = v4l2_ctrl_handler_setup(&mt9m111->hdl);
+
+done:
+ mt9m111_s_power(&mt9m111->subdev, 0);
+ return ret;
+}
+
+static int mt9m111_probe(struct i2c_client *client,
+ const struct i2c_device_id *did)
+{
+ struct mt9m111 *mt9m111;
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ int ret;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
+ dev_warn(&adapter->dev,
+ "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
+ return -EIO;
+ }
+
+ mt9m111 = devm_kzalloc(&client->dev, sizeof(struct mt9m111), GFP_KERNEL);
+ if (!mt9m111)
+ return -ENOMEM;
+
+ mt9m111->clk = v4l2_clk_get(&client->dev, "mclk");
+ if (IS_ERR(mt9m111->clk))
+ return -EPROBE_DEFER;
+
+ /* Default HIGHPOWER context */
+ mt9m111->ctx = &context_b;
+
+ v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
+ v4l2_ctrl_handler_init(&mt9m111->hdl, 5);
+ v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
+ V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
+ mt9m111->gain = v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
+ V4L2_CID_GAIN, 0, 63 * 2 * 2, 1, 32);
+ v4l2_ctrl_new_std_menu(&mt9m111->hdl,
+ &mt9m111_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0,
+ V4L2_EXPOSURE_AUTO);
+ mt9m111->subdev.ctrl_handler = &mt9m111->hdl;
+ if (mt9m111->hdl.error) {
+ ret = mt9m111->hdl.error;
+ goto out_clkput;
+ }
+
+ /* Second stage probe - when a capture adapter is there */
+ mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
+ mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
+ mt9m111->rect.width = MT9M111_MAX_WIDTH;
+ mt9m111->rect.height = MT9M111_MAX_HEIGHT;
+ mt9m111->fmt = &mt9m111_colour_fmts[0];
+ mt9m111->lastpage = -1;
+ mutex_init(&mt9m111->power_lock);
+
+ ret = mt9m111_video_probe(client);
+ if (ret < 0)
+ goto out_hdlfree;
+
+ mt9m111->subdev.dev = &client->dev;
+ ret = v4l2_async_register_subdev(&mt9m111->subdev);
+ if (ret < 0)
+ goto out_hdlfree;
+
+ return 0;
+
+out_hdlfree:
+ v4l2_ctrl_handler_free(&mt9m111->hdl);
+out_clkput:
+ v4l2_clk_put(mt9m111->clk);
+
+ return ret;
+}
+
+static int mt9m111_remove(struct i2c_client *client)
+{
+ struct mt9m111 *mt9m111 = to_mt9m111(client);
+
+ v4l2_async_unregister_subdev(&mt9m111->subdev);
+ v4l2_clk_put(mt9m111->clk);
+ v4l2_ctrl_handler_free(&mt9m111->hdl);
+
+ return 0;
+}
+static const struct of_device_id mt9m111_of_match[] = {
+ { .compatible = "micron,mt9m111", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mt9m111_of_match);
+
+static const struct i2c_device_id mt9m111_id[] = {
+ { "mt9m111", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, mt9m111_id);
+
+static struct i2c_driver mt9m111_i2c_driver = {
+ .driver = {
+ .name = "mt9m111",
+ .of_match_table = of_match_ptr(mt9m111_of_match),
+ },
+ .probe = mt9m111_probe,
+ .remove = mt9m111_remove,
+ .id_table = mt9m111_id,
+};
+
+module_i2c_driver(mt9m111_i2c_driver);
+
+MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
+MODULE_AUTHOR("Robert Jarzmik");
+MODULE_LICENSE("GPL");
projects / cascardo / linux.git / blobdiff