diff options
Diffstat (limited to 'drivers/media/video/indycam.c')
| -rw-r--r-- | drivers/media/video/indycam.c | 314 |
1 files changed, 115 insertions, 199 deletions
diff --git a/drivers/media/video/indycam.c b/drivers/media/video/indycam.c index 84b9e4f2b3b3..3d6940163b12 100644 --- a/drivers/media/video/indycam.c +++ b/drivers/media/video/indycam.c @@ -19,10 +19,12 @@ #include <linux/mm.h> #include <linux/slab.h> -#include <linux/videodev.h> /* IndyCam decodes stream of photons into digital image representation ;-) */ -#include <linux/video_decoder.h> +#include <linux/videodev2.h> #include <linux/i2c.h> +#include <media/v4l2-device.h> +#include <media/v4l2-chip-ident.h> +#include <media/v4l2-i2c-drv.h> #include "indycam.h" @@ -33,6 +35,7 @@ MODULE_VERSION(INDYCAM_MODULE_VERSION); MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>"); MODULE_LICENSE("GPL"); + // #define INDYCAM_DEBUG #ifdef INDYCAM_DEBUG @@ -44,11 +47,14 @@ MODULE_LICENSE("GPL"); #endif struct indycam { - struct i2c_client *client; + struct v4l2_subdev sd; u8 version; }; -static struct i2c_driver i2c_driver_indycam; +static inline struct indycam *to_indycam(struct v4l2_subdev *sd) +{ + return container_of(sd, struct indycam, sd); +} static const u8 initseq[] = { INDYCAM_CONTROL_AGCENA, /* INDYCAM_CONTROL */ @@ -63,8 +69,9 @@ static const u8 initseq[] = { /* IndyCam register handling */ -static int indycam_read_reg(struct i2c_client *client, u8 reg, u8 *value) +static int indycam_read_reg(struct v4l2_subdev *sd, u8 reg, u8 *value) { + struct i2c_client *client = v4l2_get_subdevdata(sd); int ret; if (reg == INDYCAM_REG_RESET) { @@ -87,12 +94,12 @@ static int indycam_read_reg(struct i2c_client *client, u8 reg, u8 *value) return 0; } -static int indycam_write_reg(struct i2c_client *client, u8 reg, u8 value) +static int indycam_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value) { + struct i2c_client *client = v4l2_get_subdevdata(sd); int err; - if ((reg == INDYCAM_REG_BRIGHTNESS) - || (reg == INDYCAM_REG_VERSION)) { + if (reg == INDYCAM_REG_BRIGHTNESS || reg == INDYCAM_REG_VERSION) { dprintk("indycam_write_reg(): " "skipping read-only register %d\n", reg); return 0; @@ -108,13 +115,13 @@ static int indycam_write_reg(struct i2c_client *client, u8 reg, u8 value) return err; } -static int indycam_write_block(struct i2c_client *client, u8 reg, +static int indycam_write_block(struct v4l2_subdev *sd, u8 reg, u8 length, u8 *data) { int i, err; for (i = 0; i < length; i++) { - err = indycam_write_reg(client, reg + i, data[i]); + err = indycam_write_reg(sd, reg + i, data[i]); if (err) return err; } @@ -125,79 +132,78 @@ static int indycam_write_block(struct i2c_client *client, u8 reg, /* Helper functions */ #ifdef INDYCAM_DEBUG -static void indycam_regdump_debug(struct i2c_client *client) +static void indycam_regdump_debug(struct v4l2_subdev *sd) { int i; u8 val; for (i = 0; i < 9; i++) { - indycam_read_reg(client, i, &val); + indycam_read_reg(sd, i, &val); dprintk("Reg %d = 0x%02x\n", i, val); } } #endif -static int indycam_get_control(struct i2c_client *client, - struct indycam_control *ctrl) +static int indycam_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) { - struct indycam *camera = i2c_get_clientdata(client); + struct indycam *camera = to_indycam(sd); u8 reg; int ret = 0; - switch (ctrl->type) { - case INDYCAM_CONTROL_AGC: - case INDYCAM_CONTROL_AWB: - ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, ®); + switch (ctrl->id) { + case V4L2_CID_AUTOGAIN: + case V4L2_CID_AUTO_WHITE_BALANCE: + ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, ®); if (ret) return -EIO; - if (ctrl->type == INDYCAM_CONTROL_AGC) + if (ctrl->id == V4L2_CID_AUTOGAIN) ctrl->value = (reg & INDYCAM_CONTROL_AGCENA) ? 1 : 0; else ctrl->value = (reg & INDYCAM_CONTROL_AWBCTL) ? 1 : 0; break; - case INDYCAM_CONTROL_SHUTTER: - ret = indycam_read_reg(client, INDYCAM_REG_SHUTTER, ®); + case V4L2_CID_EXPOSURE: + ret = indycam_read_reg(sd, INDYCAM_REG_SHUTTER, ®); if (ret) return -EIO; ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1); break; - case INDYCAM_CONTROL_GAIN: - ret = indycam_read_reg(client, INDYCAM_REG_GAIN, ®); + case V4L2_CID_GAIN: + ret = indycam_read_reg(sd, INDYCAM_REG_GAIN, ®); if (ret) return -EIO; ctrl->value = (s32)reg; break; - case INDYCAM_CONTROL_RED_BALANCE: - ret = indycam_read_reg(client, INDYCAM_REG_RED_BALANCE, ®); + case V4L2_CID_RED_BALANCE: + ret = indycam_read_reg(sd, INDYCAM_REG_RED_BALANCE, ®); if (ret) return -EIO; ctrl->value = (s32)reg; break; - case INDYCAM_CONTROL_BLUE_BALANCE: - ret = indycam_read_reg(client, INDYCAM_REG_BLUE_BALANCE, ®); + case V4L2_CID_BLUE_BALANCE: + ret = indycam_read_reg(sd, INDYCAM_REG_BLUE_BALANCE, ®); if (ret) return -EIO; ctrl->value = (s32)reg; break; case INDYCAM_CONTROL_RED_SATURATION: - ret = indycam_read_reg(client, + ret = indycam_read_reg(sd, INDYCAM_REG_RED_SATURATION, ®); if (ret) return -EIO; ctrl->value = (s32)reg; break; case INDYCAM_CONTROL_BLUE_SATURATION: - ret = indycam_read_reg(client, + ret = indycam_read_reg(sd, INDYCAM_REG_BLUE_SATURATION, ®); if (ret) return -EIO; ctrl->value = (s32)reg; break; - case INDYCAM_CONTROL_GAMMA: + case V4L2_CID_GAMMA: if (camera->version == CAMERA_VERSION_MOOSE) { - ret = indycam_read_reg(client, + ret = indycam_read_reg(sd, INDYCAM_REG_GAMMA, ®); if (ret) return -EIO; @@ -213,21 +219,20 @@ static int indycam_get_control(struct i2c_client *client, return ret; } -static int indycam_set_control(struct i2c_client *client, - struct indycam_control *ctrl) +static int indycam_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) { - struct indycam *camera = i2c_get_clientdata(client); + struct indycam *camera = to_indycam(sd); u8 reg; int ret = 0; - switch (ctrl->type) { - case INDYCAM_CONTROL_AGC: - case INDYCAM_CONTROL_AWB: - ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, ®); + switch (ctrl->id) { + case V4L2_CID_AUTOGAIN: + case V4L2_CID_AUTO_WHITE_BALANCE: + ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, ®); if (ret) break; - if (ctrl->type == INDYCAM_CONTROL_AGC) { + if (ctrl->id == V4L2_CID_AUTOGAIN) { if (ctrl->value) reg |= INDYCAM_CONTROL_AGCENA; else @@ -239,34 +244,34 @@ static int indycam_set_control(struct i2c_client *client, reg &= ~INDYCAM_CONTROL_AWBCTL; } - ret = indycam_write_reg(client, INDYCAM_REG_CONTROL, reg); + ret = indycam_write_reg(sd, INDYCAM_REG_CONTROL, reg); break; - case INDYCAM_CONTROL_SHUTTER: + case V4L2_CID_EXPOSURE: reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1); - ret = indycam_write_reg(client, INDYCAM_REG_SHUTTER, reg); + ret = indycam_write_reg(sd, INDYCAM_REG_SHUTTER, reg); break; - case INDYCAM_CONTROL_GAIN: - ret = indycam_write_reg(client, INDYCAM_REG_GAIN, ctrl->value); + case V4L2_CID_GAIN: + ret = indycam_write_reg(sd, INDYCAM_REG_GAIN, ctrl->value); break; - case INDYCAM_CONTROL_RED_BALANCE: - ret = indycam_write_reg(client, INDYCAM_REG_RED_BALANCE, + case V4L2_CID_RED_BALANCE: + ret = indycam_write_reg(sd, INDYCAM_REG_RED_BALANCE, ctrl->value); break; - case INDYCAM_CONTROL_BLUE_BALANCE: - ret = indycam_write_reg(client, INDYCAM_REG_BLUE_BALANCE, + case V4L2_CID_BLUE_BALANCE: + ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_BALANCE, ctrl->value); break; case INDYCAM_CONTROL_RED_SATURATION: - ret = indycam_write_reg(client, INDYCAM_REG_RED_SATURATION, + ret = indycam_write_reg(sd, INDYCAM_REG_RED_SATURATION, ctrl->value); break; case INDYCAM_CONTROL_BLUE_SATURATION: - ret = indycam_write_reg(client, INDYCAM_REG_BLUE_SATURATION, + ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_SATURATION, ctrl->value); break; - case INDYCAM_CONTROL_GAMMA: + case V4L2_CID_GAMMA: if (camera->version == CAMERA_VERSION_MOOSE) { - ret = indycam_write_reg(client, INDYCAM_REG_GAMMA, + ret = indycam_write_reg(sd, INDYCAM_REG_GAMMA, ctrl->value); } break; @@ -279,192 +284,103 @@ static int indycam_set_control(struct i2c_client *client, /* I2C-interface */ -static int indycam_attach(struct i2c_adapter *adap, int addr, int kind) +static int indycam_g_chip_ident(struct v4l2_subdev *sd, + struct v4l2_dbg_chip_ident *chip) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct indycam *camera = to_indycam(sd); + + return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_INDYCAM, + camera->version); +} + +/* ----------------------------------------------------------------------- */ + +static const struct v4l2_subdev_core_ops indycam_core_ops = { + .g_chip_ident = indycam_g_chip_ident, + .g_ctrl = indycam_g_ctrl, + .s_ctrl = indycam_s_ctrl, +}; + +static const struct v4l2_subdev_ops indycam_ops = { + .core = &indycam_core_ops, +}; + +static int indycam_probe(struct i2c_client *client, + const struct i2c_device_id *id) { int err = 0; struct indycam *camera; - struct i2c_client *client; + struct v4l2_subdev *sd; - printk(KERN_INFO "SGI IndyCam driver version %s\n", - INDYCAM_MODULE_VERSION); + v4l_info(client, "chip found @ 0x%x (%s)\n", + client->addr << 1, client->adapter->name); - client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); - if (!client) - return -ENOMEM; camera = kzalloc(sizeof(struct indycam), GFP_KERNEL); - if (!camera) { - err = -ENOMEM; - goto out_free_client; - } - - client->addr = addr; - client->adapter = adap; - client->driver = &i2c_driver_indycam; - client->flags = 0; - strcpy(client->name, "IndyCam client"); - i2c_set_clientdata(client, camera); - - camera->client = client; + if (!camera) + return -ENOMEM; - err = i2c_attach_client(client); - if (err) - goto out_free_camera; + sd = &camera->sd; + v4l2_i2c_subdev_init(sd, client, &indycam_ops); camera->version = i2c_smbus_read_byte_data(client, INDYCAM_REG_VERSION); if (camera->version != CAMERA_VERSION_INDY && camera->version != CAMERA_VERSION_MOOSE) { - err = -ENODEV; - goto out_detach_client; + kfree(camera); + return -ENODEV; } + printk(KERN_INFO "IndyCam v%d.%d detected\n", INDYCAM_VERSION_MAJOR(camera->version), INDYCAM_VERSION_MINOR(camera->version)); - indycam_regdump(client); + indycam_regdump(sd); // initialize - err = indycam_write_block(client, 0, sizeof(initseq), (u8 *)&initseq); + err = indycam_write_block(sd, 0, sizeof(initseq), (u8 *)&initseq); if (err) { printk(KERN_ERR "IndyCam initialization failed\n"); - err = -EIO; - goto out_detach_client; + kfree(camera); + return -EIO; } - indycam_regdump(client); + indycam_regdump(sd); // white balance - err = indycam_write_reg(client, INDYCAM_REG_CONTROL, + err = indycam_write_reg(sd, INDYCAM_REG_CONTROL, INDYCAM_CONTROL_AGCENA | INDYCAM_CONTROL_AWBCTL); if (err) { printk(KERN_ERR "IndyCam: White balancing camera failed\n"); - err = -EIO; - goto out_detach_client; + kfree(camera); + return -EIO; } - indycam_regdump(client); + indycam_regdump(sd); printk(KERN_INFO "IndyCam initialized\n"); return 0; - -out_detach_client: - i2c_detach_client(client); -out_free_camera: - kfree(camera); -out_free_client: - kfree(client); - return err; } -static int indycam_probe(struct i2c_adapter *adap) +static int indycam_remove(struct i2c_client *client) { - /* Indy specific crap */ - if (adap->id == I2C_HW_SGI_VINO) - return indycam_attach(adap, INDYCAM_ADDR, 0); - /* Feel free to add probe here :-) */ - return -ENODEV; -} - -static int indycam_detach(struct i2c_client *client) -{ - struct indycam *camera = i2c_get_clientdata(client); + struct v4l2_subdev *sd = i2c_get_clientdata(client); - i2c_detach_client(client); - kfree(camera); - kfree(client); + v4l2_device_unregister_subdev(sd); + kfree(to_indycam(sd)); return 0; } -static int indycam_command(struct i2c_client *client, unsigned int cmd, - void *arg) -{ - // struct indycam *camera = i2c_get_clientdata(client); - - /* The old video_decoder interface just isn't enough, - * so we'll use some custom commands. */ - switch (cmd) { - case DECODER_GET_CAPABILITIES: { - struct video_decoder_capability *cap = arg; - - cap->flags = VIDEO_DECODER_NTSC; - cap->inputs = 1; - cap->outputs = 1; - break; - } - case DECODER_GET_STATUS: { - int *iarg = arg; - - *iarg = DECODER_STATUS_GOOD | DECODER_STATUS_NTSC | - DECODER_STATUS_COLOR; - break; - } - case DECODER_SET_NORM: { - int *iarg = arg; - - switch (*iarg) { - case VIDEO_MODE_NTSC: - break; - default: - return -EINVAL; - } - break; - } - case DECODER_SET_INPUT: { - int *iarg = arg; - - if (*iarg != 0) - return -EINVAL; - break; - } - case DECODER_SET_OUTPUT: { - int *iarg = arg; - - if (*iarg != 0) - return -EINVAL; - break; - } - case DECODER_ENABLE_OUTPUT: { - /* Always enabled */ - break; - } - case DECODER_SET_PICTURE: { - // struct video_picture *pic = arg; - /* TODO: convert values for indycam_set_controls() */ - break; - } - case DECODER_INDYCAM_GET_CONTROL: { - return indycam_get_control(client, arg); - } - case DECODER_INDYCAM_SET_CONTROL: { - return indycam_set_control(client, arg); - } - default: - return -EINVAL; - } - - return 0; -} - -static struct i2c_driver i2c_driver_indycam = { - .driver = { - .name = "indycam", - }, - .id = I2C_DRIVERID_INDYCAM, - .attach_adapter = indycam_probe, - .detach_client = indycam_detach, - .command = indycam_command, +static const struct i2c_device_id indycam_id[] = { + { "indycam", 0 }, + { } }; +MODULE_DEVICE_TABLE(i2c, indycam_id); -static int __init indycam_init(void) -{ - return i2c_add_driver(&i2c_driver_indycam); -} - -static void __exit indycam_exit(void) -{ - i2c_del_driver(&i2c_driver_indycam); -} - -module_init(indycam_init); -module_exit(indycam_exit); +static struct v4l2_i2c_driver_data v4l2_i2c_data = { + .name = "indycam", + .probe = indycam_probe, + .remove = indycam_remove, + .id_table = indycam_id, +}; |