V4L/DVB (8684): Add support for Micron MT9M111 camera.
Adds support for Micron MT9M111 camera chip, with basic
features :
- view rectangle configurable
- some output formats (bayer8, bayer10, rgb565, rgb555, ycbycr)
- autoexposure
- only highpower mode context used (ie. context B)
create mode 100644 drivers/media/video/mt9m111.c
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c
new file mode 100644
index 0000000..0c88e5d
--- /dev/null
+++ b/drivers/media/video/mt9m111.c
@@ -0,0 +1,960 @@
+/*
+ * Driver for MT9M111 CMOS Image Sensor from Micron
+ *
+ * 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 <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/soc_camera.h>
+
+/*
+ * mt9m111 i2c address is 0x5d or 0x48 (depending on SAddr pin)
+ * The platform has to define i2c_board_info and call i2c_register_board_info()
+ */
+
+/* mt9m111: Sensor register addresses */
+#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_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)
+/*
+ * mt9m111: 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_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 (0x0 << 6)
+#define MT9M111_OUTFMT_RGB555 (0x1 << 6)
+#define MT9M111_OUTFMT_RGB444x (0x2 << 6)
+#define MT9M111_OUTFMT_RGBx444 (0x3 << 6)
+#define MT9M111_OUTFMT_TST_RAMP_OFF (0x0 << 4)
+#define MT9M111_OUTFMT_TST_RAMP_COL (0x1 << 4)
+#define MT9M111_OUTFMT_TST_RAMP_ROW (0x2 << 4)
+#define MT9M111_OUTFMT_TST_RAMP_FRAME (0x3 << 4)
+#define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
+#define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
+#define MT9M111_OUTFMT_SWAP_YCbCr_C_Y (1 << 1)
+#define MT9M111_OUTFMT_SWAP_RGB_EVEN (1 << 1)
+#define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr (1 << 0)
+/*
+ * mt9m111: Camera control register addresses (0x200..0x2ff not implemented)
+ */
+
+#define reg_read(reg) mt9m111_reg_read(icd, MT9M111_##reg)
+#define reg_write(reg, val) mt9m111_reg_write(icd, MT9M111_##reg, (val))
+#define reg_set(reg, val) mt9m111_reg_set(icd, MT9M111_##reg, (val))
+#define reg_clear(reg, val) mt9m111_reg_clear(icd, MT9M111_##reg, (val))
+
+#define MT9M111_MIN_DARK_ROWS 8
+#define MT9M111_MIN_DARK_COLS 24
+#define MT9M111_MAX_HEIGHT 1024
+#define MT9M111_MAX_WIDTH 1280
+
+#define COL_FMT(_name, _depth, _fourcc, _colorspace) \
+ { .name = _name, .depth = _depth, .fourcc = _fourcc, \
+ .colorspace = _colorspace }
+#define RGB_FMT(_name, _depth, _fourcc) \
+ COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_SRGB)
+
+static const struct soc_camera_data_format mt9m111_colour_formats[] = {
+ COL_FMT("YCrYCb 8 bit", 8, V4L2_PIX_FMT_YUYV, V4L2_COLORSPACE_JPEG),
+ RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
+ RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
+ RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
+ RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
+};
+
+enum mt9m111_context {
+ HIGHPOWER = 0,
+ LOWPOWER,
+};
+
+struct mt9m111 {
+ struct i2c_client *client;
+ struct soc_camera_device icd;
+ int model; /* V4L2_IDENT_MT9M111* codes from v4l2-chip-ident.h */
+ enum mt9m111_context context;
+ unsigned int left, top, width, height;
+ u32 pixfmt;
+ unsigned char autoexposure;
+ unsigned char datawidth;
+ unsigned int powered:1;
+ unsigned int hflip:1;
+ unsigned int vflip:1;
+ unsigned int swap_rgb_even_odd:1;
+ unsigned int swap_rgb_red_blue:1;
+ unsigned int swap_yuv_y_chromas:1;
+ unsigned int swap_yuv_cb_cr:1;
+};
+
+static int reg_page_map_set(struct i2c_client *client, const u16 reg)
+{
+ int ret;
+ u16 page;
+ static int lastpage = -1; /* PageMap cache value */
+
+ page = (reg >> 8);
+ if (page == lastpage)
+ return 0;
+ if (page > 2)
+ return -EINVAL;
+
+ ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
+ if (ret >= 0)
+ lastpage = page;
+ return ret;
+}
+
+static int mt9m111_reg_read(struct soc_camera_device *icd, const u16 reg)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ struct i2c_client *client = mt9m111->client;
+ int ret;
+
+ ret = reg_page_map_set(client, reg);
+ if (!ret)
+ ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
+
+ dev_dbg(&icd->dev, "read reg.%03x -> %04x\n", reg, ret);
+ return ret;
+}
+
+static int mt9m111_reg_write(struct soc_camera_device *icd, const u16 reg,
+ const u16 data)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ struct i2c_client *client = mt9m111->client;
+ int ret;
+
+ ret = reg_page_map_set(client, reg);
+ if (ret >= 0)
+ ret = i2c_smbus_write_word_data(mt9m111->client, (reg & 0xff),
+ swab16(data));
+ dev_dbg(&icd->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
+ return ret;
+}
+
+static int mt9m111_reg_set(struct soc_camera_device *icd, const u16 reg,
+ const u16 data)
+{
+ int ret;
+
+ ret = mt9m111_reg_read(icd, reg);
+ if (ret >= 0)
+ ret = mt9m111_reg_write(icd, reg, ret | data);
+ return ret;
+}
+
+static int mt9m111_reg_clear(struct soc_camera_device *icd, const u16 reg,
+ const u16 data)
+{
+ int ret;
+
+ ret = mt9m111_reg_read(icd, reg);
+ return mt9m111_reg_write(icd, reg, ret & ~data);
+}
+
+static int mt9m111_set_context(struct soc_camera_device *icd,
+ enum mt9m111_context ctxt)
+{
+ int valB = 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;
+ int valA = MT9M111_CTXT_CTRL_RESTART;
+
+ if (ctxt == HIGHPOWER)
+ return reg_write(CONTEXT_CONTROL, valB);
+ else
+ return reg_write(CONTEXT_CONTROL, valA);
+}
+
+static int mt9m111_setup_rect(struct soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int ret = 0, is_raw_format;
+ int width = mt9m111->width;
+ int height = mt9m111->height;
+
+ if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
+ || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
+ is_raw_format = 1;
+ else
+ is_raw_format = 0;
+
+ if (ret >= 0)
+ ret = reg_write(COLUMN_START, mt9m111->left);
+ if (ret >= 0)
+ ret = reg_write(ROW_START, mt9m111->top);
+
+ if (is_raw_format) {
+ if (ret >= 0)
+ ret = reg_write(WINDOW_WIDTH, width);
+ if (ret >= 0)
+ ret = reg_write(WINDOW_HEIGHT, height);
+ } else {
+ if (ret >= 0)
+ ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
+ if (ret >= 0)
+ ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
+ if (ret >= 0)
+ ret = reg_write(REDUCER_XSIZE_B, width);
+ if (ret >= 0)
+ ret = reg_write(REDUCER_YSIZE_B, height);
+ if (ret >= 0)
+ ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
+ if (ret >= 0)
+ ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
+ if (ret >= 0)
+ ret = reg_write(REDUCER_XSIZE_A, width);
+ if (ret >= 0)
+ ret = reg_write(REDUCER_YSIZE_A, height);
+ }
+
+ return ret;
+}
+
+static int mt9m111_setup_pixfmt(struct soc_camera_device *icd, u16 outfmt)
+{
+ int ret;
+
+ ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
+ if (ret >= 0)
+ ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
+ return ret;
+}
+
+static int mt9m111_setfmt_bayer8(struct soc_camera_device *icd)
+{
+ return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER);
+}
+
+static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd)
+{
+
+ return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP);
+}
+
+static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int val = 0;
+
+ if (mt9m111->swap_rgb_red_blue)
+ val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
+ if (mt9m111->swap_rgb_even_odd)
+ val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
+ val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
+
+ return mt9m111_setup_pixfmt(icd, val);
+}
+
+static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int val = 0;
+
+ if (mt9m111->swap_rgb_red_blue)
+ val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
+ if (mt9m111->swap_rgb_even_odd)
+ val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
+ val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
+
+ return mt9m111_setup_pixfmt(icd, val);
+}
+
+static int mt9m111_setfmt_yuv(struct soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int val = 0;
+
+ if (mt9m111->swap_yuv_cb_cr)
+ val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
+ if (mt9m111->swap_yuv_y_chromas)
+ val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
+
+ return mt9m111_setup_pixfmt(icd, val);
+}
+
+static int mt9m111_enable(struct soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int ret;
+
+ ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
+ if (ret >= 0)
+ mt9m111->powered = 1;
+ return ret;
+}
+
+static int mt9m111_disable(struct soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int ret;
+
+ ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
+ if (ret >= 0)
+ mt9m111->powered = 0;
+ return ret;
+}
+
+static int mt9m111_reset(struct soc_camera_device *icd)
+{
+ int ret;
+
+ ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
+ if (ret >= 0)
+ ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
+ if (ret >= 0)
+ ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
+ | MT9M111_RESET_RESET_SOC);
+ return ret;
+}
+
+static int mt9m111_start_capture(struct soc_camera_device *icd)
+{
+ return 0;
+}
+
+static int mt9m111_stop_capture(struct soc_camera_device *icd)
+{
+ return 0;
+}
+
+static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
+{
+ return SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
+ SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
+ SOCAM_DATAWIDTH_8;
+}
+
+static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
+{
+ return 0;
+}
+
+static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int ret = 0;
+
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_SBGGR8:
+ ret = mt9m111_setfmt_bayer8(icd);
+ break;
+ case V4L2_PIX_FMT_SBGGR16:
+ ret = mt9m111_setfmt_bayer10(icd);
+ break;
+ case V4L2_PIX_FMT_RGB555:
+ ret = mt9m111_setfmt_rgb555(icd);
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ ret = mt9m111_setfmt_rgb565(icd);
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ ret = mt9m111_setfmt_yuv(icd);
+ break;
+ default:
+ dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
+ ret = -EINVAL;
+ }
+
+ if (ret >= 0)
+ mt9m111->pixfmt = pixfmt;
+
+ return ret;
+}
+
+static int mt9m111_set_fmt_cap(struct soc_camera_device *icd,
+ __u32 pixfmt, struct v4l2_rect *rect)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int ret = 0;
+
+ mt9m111->left = rect->left;
+ mt9m111->top = rect->top;
+ mt9m111->width = rect->width;
+ mt9m111->height = rect->height;
+
+ dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
+ __func__, pixfmt, mt9m111->left, mt9m111->top, mt9m111->width,
+ mt9m111->height);
+
+ ret = mt9m111_setup_rect(icd);
+ if (ret >= 0)
+ ret = mt9m111_set_pixfmt(icd, pixfmt);
+ return ret < 0 ? ret : 0;
+}
+
+static int mt9m111_try_fmt_cap(struct soc_camera_device *icd,
+ struct v4l2_format *f)
+{
+ if (f->fmt.pix.height > MT9M111_MAX_HEIGHT)
+ f->fmt.pix.height = MT9M111_MAX_HEIGHT;
+ if (f->fmt.pix.width > MT9M111_MAX_WIDTH)
+ f->fmt.pix.width = MT9M111_MAX_WIDTH;
+
+ return 0;
+}
+
+static int mt9m111_get_chip_id(struct soc_camera_device *icd,
+ struct v4l2_chip_ident *id)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+
+ if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
+ return -EINVAL;
+
+ if (id->match_chip != mt9m111->client->addr)
+ return -ENODEV;
+
+ id->ident = mt9m111->model;
+ id->revision = 0;
+
+ return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int mt9m111_get_register(struct soc_camera_device *icd,
+ struct v4l2_register *reg)
+{
+ int val;
+
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+
+ if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
+ return -EINVAL;
+ if (reg->match_chip != mt9m111->client->addr)
+ return -ENODEV;
+
+ val = mt9m111_reg_read(icd, reg->reg);
+ reg->val = (u64)val;
+
+ if (reg->val > 0xffff)
+ return -EIO;
+
+ return 0;
+}
+
+static int mt9m111_set_register(struct soc_camera_device *icd,
+ struct v4l2_register *reg)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+
+ if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
+ return -EINVAL;
+
+ if (reg->match_chip != mt9m111->client->addr)
+ return -ENODEV;
+
+ if (mt9m111_reg_write(icd, reg->reg, reg->val) < 0)
+ return -EIO;
+
+ return 0;
+}
+#endif
+
+static const struct v4l2_queryctrl mt9m111_controls[] = {
+ {
+ .id = V4L2_CID_VFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Flip Verticaly",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ }, {
+ .id = V4L2_CID_HFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Flip Horizontaly",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ }, { /* gain = 1/32*val (=>gain=1 if val==32) */
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gain",
+ .minimum = 0,
+ .maximum = 63 * 2 * 2,
+ .step = 1,
+ .default_value = 32,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
+ }, {
+ .id = V4L2_CID_EXPOSURE_AUTO,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Auto Exposure",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ }
+};
+
+static int mt9m111_video_probe(struct soc_camera_device *);
+static void mt9m111_video_remove(struct soc_camera_device *);
+static int mt9m111_get_control(struct soc_camera_device *,
+ struct v4l2_control *);
+static int mt9m111_set_control(struct soc_camera_device *,
+ struct v4l2_control *);
+static int mt9m111_resume(struct soc_camera_device *icd);
+static int mt9m111_init(struct soc_camera_device *icd);
+static int mt9m111_release(struct soc_camera_device *icd);
+
+static struct soc_camera_ops mt9m111_ops = {
+ .owner = THIS_MODULE,
+ .probe = mt9m111_video_probe,
+ .remove = mt9m111_video_remove,
+ .init = mt9m111_init,
+ .resume = mt9m111_resume,
+ .release = mt9m111_release,
+ .start_capture = mt9m111_start_capture,
+ .stop_capture = mt9m111_stop_capture,
+ .set_fmt_cap = mt9m111_set_fmt_cap,
+ .try_fmt_cap = mt9m111_try_fmt_cap,
+ .query_bus_param = mt9m111_query_bus_param,
+ .set_bus_param = mt9m111_set_bus_param,
+ .controls = mt9m111_controls,
+ .num_controls = ARRAY_SIZE(mt9m111_controls),
+ .get_control = mt9m111_get_control,
+ .set_control = mt9m111_set_control,
+ .get_chip_id = mt9m111_get_chip_id,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .get_register = mt9m111_get_register,
+ .set_register = mt9m111_set_register,
+#endif
+};
+
+static int mt9m111_set_flip(struct soc_camera_device *icd, int flip, int mask)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int ret;
+
+ if (mt9m111->context == HIGHPOWER) {
+ if (flip)
+ ret = reg_set(READ_MODE_B, mask);
+ else
+ ret = reg_clear(READ_MODE_B, mask);
+ } else {
+ if (flip)
+ ret = reg_set(READ_MODE_A, mask);
+ else
+ ret = reg_clear(READ_MODE_A, mask);
+ }
+
+ return ret;
+}
+
+static int mt9m111_get_global_gain(struct soc_camera_device *icd)
+{
+ unsigned int data, gain;
+
+ data = reg_read(GLOBAL_GAIN);
+ if (data >= 0)
+ gain = ((data & (1 << 10)) * 2)
+ | ((data & (1 << 9)) * 2)
+ | (data & 0x2f);
+ else
+ gain = data;
+
+ return gain;
+}
+static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain)
+{
+ u16 val;
+
+ if (gain > 63 * 2 * 2)
+ return -EINVAL;
+
+ icd->gain = gain;
+ 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 soc_camera_device *icd, int on)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int ret;
+
+ if (on)
+ ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
+ else
+ ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
+
+ if (ret >= 0)
+ mt9m111->autoexposure = on;
+
+ return ret;
+}
+static int mt9m111_get_control(struct soc_camera_device *icd,
+ struct v4l2_control *ctrl)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int data;
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ if (mt9m111->context == HIGHPOWER)
+ data = reg_read(READ_MODE_B);
+ else
+ data = reg_read(READ_MODE_A);
+
+ if (data < 0)
+ return -EIO;
+ ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
+ break;
+ case V4L2_CID_HFLIP:
+ if (mt9m111->context == HIGHPOWER)
+ data = reg_read(READ_MODE_B);
+ else
+ data = reg_read(READ_MODE_A);
+
+ if (data < 0)
+ return -EIO;
+ ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
+ break;
+ case V4L2_CID_GAIN:
+ data = mt9m111_get_global_gain(icd);
+ if (data < 0)
+ return data;
+ ctrl->value = data;
+ break;
+ case V4L2_CID_EXPOSURE_AUTO:
+ ctrl->value = mt9m111->autoexposure;
+ break;
+ }
+ return 0;
+}
+
+static int mt9m111_set_control(struct soc_camera_device *icd,
+ struct v4l2_control *ctrl)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ const struct v4l2_queryctrl *qctrl;
+ int ret = 0;
+
+ qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
+
+ if (!qctrl)
+ return -EINVAL;
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ mt9m111->vflip = ctrl->value;
+ ret = mt9m111_set_flip(icd, ctrl->value,
+ MT9M111_RMB_MIRROR_ROWS);
+ break;
+ case V4L2_CID_HFLIP:
+ mt9m111->hflip = ctrl->value;
+ ret = mt9m111_set_flip(icd, ctrl->value,
+ MT9M111_RMB_MIRROR_COLS);
+ break;
+ case V4L2_CID_GAIN:
+ ret = mt9m111_set_global_gain(icd, ctrl->value);
+ break;
+ case V4L2_CID_EXPOSURE_AUTO:
+ ret = mt9m111_set_autoexposure(icd, ctrl->value);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret < 0 ? -EIO : 0;
+}
+
+int mt9m111_restore_state(struct soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+
+ mt9m111_set_context(icd, mt9m111->context);
+ mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
+ mt9m111_setup_rect(icd);
+ mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
+ mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
+ mt9m111_set_global_gain(icd, icd->gain);
+ mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
+ return 0;
+}
+
+static int mt9m111_resume(struct soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int ret = 0;
+
+ if (mt9m111->powered) {
+ ret = mt9m111_enable(icd);
+ if (ret >= 0)
+ mt9m111_reset(icd);
+ if (ret >= 0)
+ mt9m111_restore_state(icd);
+ }
+ return ret;
+}
+
+static int mt9m111_init(struct soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int ret;
+
+ mt9m111->context = HIGHPOWER;
+ ret = mt9m111_enable(icd);
+ if (ret >= 0)
+ mt9m111_reset(icd);
+ if (ret >= 0)
+ mt9m111_set_context(icd, mt9m111->context);
+ if (ret >= 0)
+ mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
+ if (ret < 0)
+ dev_err(&icd->dev, "mt9m111 init failed: %d\n", ret);
+ return ret ? -EIO : 0;
+}
+
+static int mt9m111_release(struct soc_camera_device *icd)
+{
+ int ret;
+
+ ret = mt9m111_disable(icd);
+ if (ret < 0)
+ dev_err(&icd->dev, "mt9m111 release failed: %d\n", ret);
+
+ return ret ? -EIO : 0;
+}
+
+/*
+ * 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 soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ s32 data;
+ int ret;
+
+ /*
+ * We must have a parent by now. And it cannot be a wrong one.
+ * So this entire test is completely redundant.
+ */
+ if (!icd->dev.parent ||
+ to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
+ return -ENODEV;
+
+ ret = mt9m111_enable(icd);
+ if (ret)
+ goto ei2c;
+ ret = mt9m111_reset(icd);
+ if (ret)
+ goto ei2c;
+
+ data = reg_read(CHIP_VERSION);
+
+ switch (data) {
+ case 0x143a:
+ mt9m111->model = V4L2_IDENT_MT9M111;
+ icd->formats = mt9m111_colour_formats;
+ icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
+ break;
+ default:
+ ret = -ENODEV;
+ dev_err(&icd->dev,
+ "No MT9M111 chip detected, register read %x\n", data);
+ goto ei2c;
+ }
+
+ dev_info(&icd->dev, "Detected a MT9M111 chip ID 0x143a\n");
+
+ ret = soc_camera_video_start(icd);
+ if (ret)
+ goto eisis;
+
+ mt9m111->autoexposure = 1;
+
+ mt9m111->swap_rgb_even_odd = 1;
+ mt9m111->swap_rgb_red_blue = 1;
+
+ return 0;
+eisis:
+ei2c:
+ return ret;
+}
+
+static void mt9m111_video_remove(struct soc_camera_device *icd)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+
+ dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr,
+ mt9m111->icd.dev.parent, mt9m111->icd.vdev);
+ soc_camera_video_stop(&mt9m111->icd);
+}
+
+static int mt9m111_probe(struct i2c_client *client,
+ const struct i2c_device_id *did)
+{
+ struct mt9m111 *mt9m111;
+ struct soc_camera_device *icd;
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct soc_camera_link *icl = client->dev.platform_data;
+ int ret;
+
+ if (!icl) {
+ dev_err(&client->dev, "MT9M111 driver needs platform data\n");
+ return -EINVAL;
+ }
+
+ 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 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
+ if (!mt9m111)
+ return -ENOMEM;
+
+ mt9m111->client = client;
+ i2c_set_clientdata(client, mt9m111);
+
+ /* Second stage probe - when a capture adapter is there */
+ icd = &mt9m111->icd;
+ icd->ops = &mt9m111_ops;
+ icd->control = &client->dev;
+ icd->x_min = MT9M111_MIN_DARK_COLS;
+ icd->y_min = MT9M111_MIN_DARK_ROWS;
+ icd->x_current = icd->x_min;
+ icd->y_current = icd->y_min;
+ icd->width_min = MT9M111_MIN_DARK_ROWS;
+ icd->width_max = MT9M111_MAX_WIDTH;
+ icd->height_min = MT9M111_MIN_DARK_COLS;
+ icd->height_max = MT9M111_MAX_HEIGHT;
+ icd->y_skip_top = 0;
+ icd->iface = icl->bus_id;
+
+ ret = soc_camera_device_register(icd);
+ if (ret)
+ goto eisdr;
+ return 0;
+
+eisdr:
+ kfree(mt9m111);
+ return ret;
+}
+
+static int mt9m111_remove(struct i2c_client *client)
+{
+ struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
+ soc_camera_device_unregister(&mt9m111->icd);
+ kfree(mt9m111);
+
+ return 0;
+}
+
+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",
+ },
+ .probe = mt9m111_probe,
+ .remove = mt9m111_remove,
+ .id_table = mt9m111_id,
+};
+
+static int __init mt9m111_mod_init(void)
+{
+ return i2c_add_driver(&mt9m111_i2c_driver);
+}
+
+static void __exit mt9m111_mod_exit(void)
+{
+ i2c_del_driver(&mt9m111_i2c_driver);
+}
+
+module_init(mt9m111_mod_init);
+module_exit(mt9m111_mod_exit);
+
+MODULE_DESCRIPTION("Micron MT9M111 Camera driver");
+MODULE_AUTHOR("Robert Jarzmik");
+MODULE_LICENSE("GPL");