diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-14 16:23:43 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-15 16:42:14 -0300 |
commit | cb7a01ac324bf2ee2c666f37ac867e4135f9785a (patch) | |
tree | 7246b915a9334d4bc823c93ba9acab65ef882678 /drivers/media/video/mt9v011.c | |
parent | f0af8fa4dad0839f844fd0633e1936493f6d685a (diff) |
[media] move i2c files into drivers/media/i2c
Move ancillary I2C drivers into drivers/media/i2c, in order to
better organize them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/mt9v011.c')
-rw-r--r-- | drivers/media/video/mt9v011.c | 712 |
1 files changed, 0 insertions, 712 deletions
diff --git a/drivers/media/video/mt9v011.c b/drivers/media/video/mt9v011.c deleted file mode 100644 index 6bf01ad62765..000000000000 --- a/drivers/media/video/mt9v011.c +++ /dev/null @@ -1,712 +0,0 @@ -/* - * mt9v011 -Micron 1/4-Inch VGA Digital Image Sensor - * - * Copyright (c) 2009 Mauro Carvalho Chehab (mchehab@redhat.com) - * This code is placed under the terms of the GNU General Public License v2 - */ - -#include <linux/i2c.h> -#include <linux/slab.h> -#include <linux/videodev2.h> -#include <linux/delay.h> -#include <linux/module.h> -#include <asm/div64.h> -#include <media/v4l2-device.h> -#include <media/v4l2-chip-ident.h> -#include <media/mt9v011.h> - -MODULE_DESCRIPTION("Micron mt9v011 sensor driver"); -MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>"); -MODULE_LICENSE("GPL"); - -static int debug; -module_param(debug, int, 0); -MODULE_PARM_DESC(debug, "Debug level (0-2)"); - -#define R00_MT9V011_CHIP_VERSION 0x00 -#define R01_MT9V011_ROWSTART 0x01 -#define R02_MT9V011_COLSTART 0x02 -#define R03_MT9V011_HEIGHT 0x03 -#define R04_MT9V011_WIDTH 0x04 -#define R05_MT9V011_HBLANK 0x05 -#define R06_MT9V011_VBLANK 0x06 -#define R07_MT9V011_OUT_CTRL 0x07 -#define R09_MT9V011_SHUTTER_WIDTH 0x09 -#define R0A_MT9V011_CLK_SPEED 0x0a -#define R0B_MT9V011_RESTART 0x0b -#define R0C_MT9V011_SHUTTER_DELAY 0x0c -#define R0D_MT9V011_RESET 0x0d -#define R1E_MT9V011_DIGITAL_ZOOM 0x1e -#define R20_MT9V011_READ_MODE 0x20 -#define R2B_MT9V011_GREEN_1_GAIN 0x2b -#define R2C_MT9V011_BLUE_GAIN 0x2c -#define R2D_MT9V011_RED_GAIN 0x2d -#define R2E_MT9V011_GREEN_2_GAIN 0x2e -#define R35_MT9V011_GLOBAL_GAIN 0x35 -#define RF1_MT9V011_CHIP_ENABLE 0xf1 - -#define MT9V011_VERSION 0x8232 -#define MT9V011_REV_B_VERSION 0x8243 - -/* supported controls */ -static struct v4l2_queryctrl mt9v011_qctrl[] = { - { - .id = V4L2_CID_GAIN, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Gain", - .minimum = 0, - .maximum = (1 << 12) - 1 - 0x0020, - .step = 1, - .default_value = 0x0020, - .flags = 0, - }, { - .id = V4L2_CID_EXPOSURE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Exposure", - .minimum = 0, - .maximum = 2047, - .step = 1, - .default_value = 0x01fc, - .flags = 0, - }, { - .id = V4L2_CID_RED_BALANCE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Red Balance", - .minimum = -1 << 9, - .maximum = (1 << 9) - 1, - .step = 1, - .default_value = 0, - .flags = 0, - }, { - .id = V4L2_CID_BLUE_BALANCE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Blue Balance", - .minimum = -1 << 9, - .maximum = (1 << 9) - 1, - .step = 1, - .default_value = 0, - .flags = 0, - }, { - .id = V4L2_CID_HFLIP, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Mirror", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 0, - .flags = 0, - }, { - .id = V4L2_CID_VFLIP, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Vflip", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 0, - .flags = 0, - }, { - } -}; - -struct mt9v011 { - struct v4l2_subdev sd; - unsigned width, height; - unsigned xtal; - unsigned hflip:1; - unsigned vflip:1; - - u16 global_gain, exposure; - s16 red_bal, blue_bal; -}; - -static inline struct mt9v011 *to_mt9v011(struct v4l2_subdev *sd) -{ - return container_of(sd, struct mt9v011, sd); -} - -static int mt9v011_read(struct v4l2_subdev *sd, unsigned char addr) -{ - struct i2c_client *c = v4l2_get_subdevdata(sd); - __be16 buffer; - int rc, val; - - rc = i2c_master_send(c, &addr, 1); - if (rc != 1) - v4l2_dbg(0, debug, sd, - "i2c i/o error: rc == %d (should be 1)\n", rc); - - msleep(10); - - rc = i2c_master_recv(c, (char *)&buffer, 2); - if (rc != 2) - v4l2_dbg(0, debug, sd, - "i2c i/o error: rc == %d (should be 2)\n", rc); - - val = be16_to_cpu(buffer); - - v4l2_dbg(2, debug, sd, "mt9v011: read 0x%02x = 0x%04x\n", addr, val); - - return val; -} - -static void mt9v011_write(struct v4l2_subdev *sd, unsigned char addr, - u16 value) -{ - struct i2c_client *c = v4l2_get_subdevdata(sd); - unsigned char buffer[3]; - int rc; - - buffer[0] = addr; - buffer[1] = value >> 8; - buffer[2] = value & 0xff; - - v4l2_dbg(2, debug, sd, - "mt9v011: writing 0x%02x 0x%04x\n", buffer[0], value); - rc = i2c_master_send(c, buffer, 3); - if (rc != 3) - v4l2_dbg(0, debug, sd, - "i2c i/o error: rc == %d (should be 3)\n", rc); -} - - -struct i2c_reg_value { - unsigned char reg; - u16 value; -}; - -/* - * Values used at the original driver - * Some values are marked as Reserved at the datasheet - */ -static const struct i2c_reg_value mt9v011_init_default[] = { - { R0D_MT9V011_RESET, 0x0001 }, - { R0D_MT9V011_RESET, 0x0000 }, - - { R0C_MT9V011_SHUTTER_DELAY, 0x0000 }, - { R09_MT9V011_SHUTTER_WIDTH, 0x1fc }, - - { R0A_MT9V011_CLK_SPEED, 0x0000 }, - { R1E_MT9V011_DIGITAL_ZOOM, 0x0000 }, - - { R07_MT9V011_OUT_CTRL, 0x0002 }, /* chip enable */ -}; - - -static u16 calc_mt9v011_gain(s16 lineargain) -{ - - u16 digitalgain = 0; - u16 analogmult = 0; - u16 analoginit = 0; - - if (lineargain < 0) - lineargain = 0; - - /* recommended minimum */ - lineargain += 0x0020; - - if (lineargain > 2047) - lineargain = 2047; - - if (lineargain > 1023) { - digitalgain = 3; - analogmult = 3; - analoginit = lineargain / 16; - } else if (lineargain > 511) { - digitalgain = 1; - analogmult = 3; - analoginit = lineargain / 8; - } else if (lineargain > 255) { - analogmult = 3; - analoginit = lineargain / 4; - } else if (lineargain > 127) { - analogmult = 1; - analoginit = lineargain / 2; - } else - analoginit = lineargain; - - return analoginit + (analogmult << 7) + (digitalgain << 9); - -} - -static void set_balance(struct v4l2_subdev *sd) -{ - struct mt9v011 *core = to_mt9v011(sd); - u16 green_gain, blue_gain, red_gain; - u16 exposure; - s16 bal; - - exposure = core->exposure; - - green_gain = calc_mt9v011_gain(core->global_gain); - - bal = core->global_gain; - bal += (core->blue_bal * core->global_gain / (1 << 7)); - blue_gain = calc_mt9v011_gain(bal); - - bal = core->global_gain; - bal += (core->red_bal * core->global_gain / (1 << 7)); - red_gain = calc_mt9v011_gain(bal); - - mt9v011_write(sd, R2B_MT9V011_GREEN_1_GAIN, green_gain); - mt9v011_write(sd, R2E_MT9V011_GREEN_2_GAIN, green_gain); - mt9v011_write(sd, R2C_MT9V011_BLUE_GAIN, blue_gain); - mt9v011_write(sd, R2D_MT9V011_RED_GAIN, red_gain); - mt9v011_write(sd, R09_MT9V011_SHUTTER_WIDTH, exposure); -} - -static void calc_fps(struct v4l2_subdev *sd, u32 *numerator, u32 *denominator) -{ - struct mt9v011 *core = to_mt9v011(sd); - unsigned height, width, hblank, vblank, speed; - unsigned row_time, t_time; - u64 frames_per_ms; - unsigned tmp; - - height = mt9v011_read(sd, R03_MT9V011_HEIGHT); - width = mt9v011_read(sd, R04_MT9V011_WIDTH); - hblank = mt9v011_read(sd, R05_MT9V011_HBLANK); - vblank = mt9v011_read(sd, R06_MT9V011_VBLANK); - speed = mt9v011_read(sd, R0A_MT9V011_CLK_SPEED); - - row_time = (width + 113 + hblank) * (speed + 2); - t_time = row_time * (height + vblank + 1); - - frames_per_ms = core->xtal * 1000l; - do_div(frames_per_ms, t_time); - tmp = frames_per_ms; - - v4l2_dbg(1, debug, sd, "Programmed to %u.%03u fps (%d pixel clcks)\n", - tmp / 1000, tmp % 1000, t_time); - - if (numerator && denominator) { - *numerator = 1000; - *denominator = (u32)frames_per_ms; - } -} - -static u16 calc_speed(struct v4l2_subdev *sd, u32 numerator, u32 denominator) -{ - struct mt9v011 *core = to_mt9v011(sd); - unsigned height, width, hblank, vblank; - unsigned row_time, line_time; - u64 t_time, speed; - - /* Avoid bogus calculus */ - if (!numerator || !denominator) - return 0; - - height = mt9v011_read(sd, R03_MT9V011_HEIGHT); - width = mt9v011_read(sd, R04_MT9V011_WIDTH); - hblank = mt9v011_read(sd, R05_MT9V011_HBLANK); - vblank = mt9v011_read(sd, R06_MT9V011_VBLANK); - - row_time = width + 113 + hblank; - line_time = height + vblank + 1; - - t_time = core->xtal * ((u64)numerator); - /* round to the closest value */ - t_time += denominator / 2; - do_div(t_time, denominator); - - speed = t_time; - do_div(speed, row_time * line_time); - - /* Avoid having a negative value for speed */ - if (speed < 2) - speed = 0; - else - speed -= 2; - - /* Avoid speed overflow */ - if (speed > 15) - return 15; - - return (u16)speed; -} - -static void set_res(struct v4l2_subdev *sd) -{ - struct mt9v011 *core = to_mt9v011(sd); - unsigned vstart, hstart; - - /* - * The mt9v011 doesn't have scaling. So, in order to select the desired - * resolution, we're cropping at the middle of the sensor. - * hblank and vblank should be adjusted, in order to warrant that - * we'll preserve the line timings for 30 fps, no matter what resolution - * is selected. - * NOTE: datasheet says that width (and height) should be filled with - * width-1. However, this doesn't work, since one pixel per line will - * be missing. - */ - - hstart = 20 + (640 - core->width) / 2; - mt9v011_write(sd, R02_MT9V011_COLSTART, hstart); - mt9v011_write(sd, R04_MT9V011_WIDTH, core->width); - mt9v011_write(sd, R05_MT9V011_HBLANK, 771 - core->width); - - vstart = 8 + (480 - core->height) / 2; - mt9v011_write(sd, R01_MT9V011_ROWSTART, vstart); - mt9v011_write(sd, R03_MT9V011_HEIGHT, core->height); - mt9v011_write(sd, R06_MT9V011_VBLANK, 508 - core->height); - - calc_fps(sd, NULL, NULL); -}; - -static void set_read_mode(struct v4l2_subdev *sd) -{ - struct mt9v011 *core = to_mt9v011(sd); - unsigned mode = 0x1000; - - if (core->hflip) - mode |= 0x4000; - - if (core->vflip) - mode |= 0x8000; - - mt9v011_write(sd, R20_MT9V011_READ_MODE, mode); -} - -static int mt9v011_reset(struct v4l2_subdev *sd, u32 val) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(mt9v011_init_default); i++) - mt9v011_write(sd, mt9v011_init_default[i].reg, - mt9v011_init_default[i].value); - - set_balance(sd); - set_res(sd); - set_read_mode(sd); - - return 0; -}; - -static int mt9v011_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) -{ - struct mt9v011 *core = to_mt9v011(sd); - - v4l2_dbg(1, debug, sd, "g_ctrl called\n"); - - switch (ctrl->id) { - case V4L2_CID_GAIN: - ctrl->value = core->global_gain; - return 0; - case V4L2_CID_EXPOSURE: - ctrl->value = core->exposure; - return 0; - case V4L2_CID_RED_BALANCE: - ctrl->value = core->red_bal; - return 0; - case V4L2_CID_BLUE_BALANCE: - ctrl->value = core->blue_bal; - return 0; - case V4L2_CID_HFLIP: - ctrl->value = core->hflip ? 1 : 0; - return 0; - case V4L2_CID_VFLIP: - ctrl->value = core->vflip ? 1 : 0; - return 0; - } - return -EINVAL; -} - -static int mt9v011_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) -{ - int i; - - v4l2_dbg(1, debug, sd, "queryctrl called\n"); - - for (i = 0; i < ARRAY_SIZE(mt9v011_qctrl); i++) - if (qc->id && qc->id == mt9v011_qctrl[i].id) { - memcpy(qc, &(mt9v011_qctrl[i]), - sizeof(*qc)); - return 0; - } - - return -EINVAL; -} - - -static int mt9v011_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) -{ - struct mt9v011 *core = to_mt9v011(sd); - u8 i, n; - n = ARRAY_SIZE(mt9v011_qctrl); - - for (i = 0; i < n; i++) { - if (ctrl->id != mt9v011_qctrl[i].id) - continue; - if (ctrl->value < mt9v011_qctrl[i].minimum || - ctrl->value > mt9v011_qctrl[i].maximum) - return -ERANGE; - v4l2_dbg(1, debug, sd, "s_ctrl: id=%d, value=%d\n", - ctrl->id, ctrl->value); - break; - } - - switch (ctrl->id) { - case V4L2_CID_GAIN: - core->global_gain = ctrl->value; - break; - case V4L2_CID_EXPOSURE: - core->exposure = ctrl->value; - break; - case V4L2_CID_RED_BALANCE: - core->red_bal = ctrl->value; - break; - case V4L2_CID_BLUE_BALANCE: - core->blue_bal = ctrl->value; - break; - case V4L2_CID_HFLIP: - core->hflip = ctrl->value; - set_read_mode(sd); - return 0; - case V4L2_CID_VFLIP: - core->vflip = ctrl->value; - set_read_mode(sd); - return 0; - default: - return -EINVAL; - } - - set_balance(sd); - - return 0; -} - -static int mt9v011_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned index, - enum v4l2_mbus_pixelcode *code) -{ - if (index > 0) - return -EINVAL; - - *code = V4L2_MBUS_FMT_SGRBG8_1X8; - return 0; -} - -static int mt9v011_try_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *fmt) -{ - if (fmt->code != V4L2_MBUS_FMT_SGRBG8_1X8) - return -EINVAL; - - v4l_bound_align_image(&fmt->width, 48, 639, 1, - &fmt->height, 32, 480, 1, 0); - fmt->field = V4L2_FIELD_NONE; - fmt->colorspace = V4L2_COLORSPACE_SRGB; - - return 0; -} - -static int mt9v011_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms) -{ - struct v4l2_captureparm *cp = &parms->parm.capture; - - if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - memset(cp, 0, sizeof(struct v4l2_captureparm)); - cp->capability = V4L2_CAP_TIMEPERFRAME; - calc_fps(sd, - &cp->timeperframe.numerator, - &cp->timeperframe.denominator); - - return 0; -} - -static int mt9v011_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms) -{ - struct v4l2_captureparm *cp = &parms->parm.capture; - struct v4l2_fract *tpf = &cp->timeperframe; - u16 speed; - - if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - if (cp->extendedmode != 0) - return -EINVAL; - - speed = calc_speed(sd, tpf->numerator, tpf->denominator); - - mt9v011_write(sd, R0A_MT9V011_CLK_SPEED, speed); - v4l2_dbg(1, debug, sd, "Setting speed to %d\n", speed); - - /* Recalculate and update fps info */ - calc_fps(sd, &tpf->numerator, &tpf->denominator); - - return 0; -} - -static int mt9v011_s_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *fmt) -{ - struct mt9v011 *core = to_mt9v011(sd); - int rc; - - rc = mt9v011_try_mbus_fmt(sd, fmt); - if (rc < 0) - return -EINVAL; - - core->width = fmt->width; - core->height = fmt->height; - - set_res(sd); - - return 0; -} - -#ifdef CONFIG_VIDEO_ADV_DEBUG -static int mt9v011_g_register(struct v4l2_subdev *sd, - struct v4l2_dbg_register *reg) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - - if (!v4l2_chip_match_i2c_client(client, ®->match)) - return -EINVAL; - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - reg->val = mt9v011_read(sd, reg->reg & 0xff); - reg->size = 2; - - return 0; -} - -static int mt9v011_s_register(struct v4l2_subdev *sd, - struct v4l2_dbg_register *reg) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - - if (!v4l2_chip_match_i2c_client(client, ®->match)) - return -EINVAL; - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - mt9v011_write(sd, reg->reg & 0xff, reg->val & 0xffff); - - return 0; -} -#endif - -static int mt9v011_g_chip_ident(struct v4l2_subdev *sd, - struct v4l2_dbg_chip_ident *chip) -{ - u16 version; - struct i2c_client *client = v4l2_get_subdevdata(sd); - - version = mt9v011_read(sd, R00_MT9V011_CHIP_VERSION); - - return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_MT9V011, - version); -} - -static const struct v4l2_subdev_core_ops mt9v011_core_ops = { - .queryctrl = mt9v011_queryctrl, - .g_ctrl = mt9v011_g_ctrl, - .s_ctrl = mt9v011_s_ctrl, - .reset = mt9v011_reset, - .g_chip_ident = mt9v011_g_chip_ident, -#ifdef CONFIG_VIDEO_ADV_DEBUG - .g_register = mt9v011_g_register, - .s_register = mt9v011_s_register, -#endif -}; - -static const struct v4l2_subdev_video_ops mt9v011_video_ops = { - .enum_mbus_fmt = mt9v011_enum_mbus_fmt, - .try_mbus_fmt = mt9v011_try_mbus_fmt, - .s_mbus_fmt = mt9v011_s_mbus_fmt, - .g_parm = mt9v011_g_parm, - .s_parm = mt9v011_s_parm, -}; - -static const struct v4l2_subdev_ops mt9v011_ops = { - .core = &mt9v011_core_ops, - .video = &mt9v011_video_ops, -}; - - -/**************************************************************************** - I2C Client & Driver - ****************************************************************************/ - -static int mt9v011_probe(struct i2c_client *c, - const struct i2c_device_id *id) -{ - u16 version; - struct mt9v011 *core; - struct v4l2_subdev *sd; - - /* Check if the adapter supports the needed features */ - if (!i2c_check_functionality(c->adapter, - I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) - return -EIO; - - core = kzalloc(sizeof(struct mt9v011), GFP_KERNEL); - if (!core) - return -ENOMEM; - - sd = &core->sd; - v4l2_i2c_subdev_init(sd, c, &mt9v011_ops); - - /* Check if the sensor is really a MT9V011 */ - version = mt9v011_read(sd, R00_MT9V011_CHIP_VERSION); - if ((version != MT9V011_VERSION) && - (version != MT9V011_REV_B_VERSION)) { - v4l2_info(sd, "*** unknown micron chip detected (0x%04x).\n", - version); - kfree(core); - return -EINVAL; - } - - core->global_gain = 0x0024; - core->exposure = 0x01fc; - core->width = 640; - core->height = 480; - core->xtal = 27000000; /* Hz */ - - if (c->dev.platform_data) { - struct mt9v011_platform_data *pdata = c->dev.platform_data; - - core->xtal = pdata->xtal; - v4l2_dbg(1, debug, sd, "xtal set to %d.%03d MHz\n", - core->xtal / 1000000, (core->xtal / 1000) % 1000); - } - - v4l_info(c, "chip found @ 0x%02x (%s - chip version 0x%04x)\n", - c->addr << 1, c->adapter->name, version); - - return 0; -} - -static int mt9v011_remove(struct i2c_client *c) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(c); - - v4l2_dbg(1, debug, sd, - "mt9v011.c: removing mt9v011 adapter on address 0x%x\n", - c->addr << 1); - - v4l2_device_unregister_subdev(sd); - kfree(to_mt9v011(sd)); - return 0; -} - -/* ----------------------------------------------------------------------- */ - -static const struct i2c_device_id mt9v011_id[] = { - { "mt9v011", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, mt9v011_id); - -static struct i2c_driver mt9v011_driver = { - .driver = { - .owner = THIS_MODULE, - .name = "mt9v011", - }, - .probe = mt9v011_probe, - .remove = mt9v011_remove, - .id_table = mt9v011_id, -}; - -module_i2c_driver(mt9v011_driver); |