diff options
Diffstat (limited to 'drivers/media/video/ak881x.c')
| -rw-r--r-- | drivers/media/video/ak881x.c | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/drivers/media/video/ak881x.c b/drivers/media/video/ak881x.c deleted file mode 100644 index ba674656b10..00000000000 --- a/drivers/media/video/ak881x.c +++ /dev/null @@ -1,359 +0,0 @@ -/* - * Driver for AK8813 / AK8814 TV-ecoders from Asahi Kasei Microsystems Co., Ltd. (AKM) - * - * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> - * - * 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/i2c.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/videodev2.h> -#include <linux/module.h> - -#include <media/ak881x.h> -#include <media/v4l2-chip-ident.h> -#include <media/v4l2-common.h> -#include <media/v4l2-device.h> - -#define AK881X_INTERFACE_MODE 0 -#define AK881X_VIDEO_PROCESS1 1 -#define AK881X_VIDEO_PROCESS2 2 -#define AK881X_VIDEO_PROCESS3 3 -#define AK881X_DAC_MODE 5 -#define AK881X_STATUS 0x24 -#define AK881X_DEVICE_ID 0x25 -#define AK881X_DEVICE_REVISION 0x26 - -struct ak881x { - struct v4l2_subdev subdev; - struct ak881x_pdata *pdata; - unsigned int lines; - int id; /* DEVICE_ID code V4L2_IDENT_AK881X code from v4l2-chip-ident.h */ - char revision; /* DEVICE_REVISION content */ -}; - -static int reg_read(struct i2c_client *client, const u8 reg) -{ - return i2c_smbus_read_byte_data(client, reg); -} - -static int reg_write(struct i2c_client *client, const u8 reg, - const u8 data) -{ - return i2c_smbus_write_byte_data(client, reg, data); -} - -static int reg_set(struct i2c_client *client, const u8 reg, - const u8 data, u8 mask) -{ - int ret = reg_read(client, reg); - if (ret < 0) - return ret; - return reg_write(client, reg, (ret & ~mask) | (data & mask)); -} - -static struct ak881x *to_ak881x(const struct i2c_client *client) -{ - return container_of(i2c_get_clientdata(client), struct ak881x, subdev); -} - -static int ak881x_g_chip_ident(struct v4l2_subdev *sd, - struct v4l2_dbg_chip_ident *id) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct ak881x *ak881x = to_ak881x(client); - - if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) - return -EINVAL; - - if (id->match.addr != client->addr) - return -ENODEV; - - id->ident = ak881x->id; - id->revision = ak881x->revision; - - return 0; -} - -#ifdef CONFIG_VIDEO_ADV_DEBUG -static int ak881x_g_register(struct v4l2_subdev *sd, - struct v4l2_dbg_register *reg) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - - if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x26) - return -EINVAL; - - if (reg->match.addr != client->addr) - return -ENODEV; - - reg->val = reg_read(client, reg->reg); - - if (reg->val > 0xffff) - return -EIO; - - return 0; -} - -static int ak881x_s_register(struct v4l2_subdev *sd, - struct v4l2_dbg_register *reg) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - - if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x26) - return -EINVAL; - - if (reg->match.addr != client->addr) - return -ENODEV; - - if (reg_write(client, reg->reg, reg->val) < 0) - return -EIO; - - return 0; -} -#endif - -static int ak881x_try_g_mbus_fmt(struct v4l2_subdev *sd, - struct v4l2_mbus_framefmt *mf) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct ak881x *ak881x = to_ak881x(client); - - v4l_bound_align_image(&mf->width, 0, 720, 2, - &mf->height, 0, ak881x->lines, 1, 0); - mf->field = V4L2_FIELD_INTERLACED; - mf->code = V4L2_MBUS_FMT_YUYV8_2X8; - mf->colorspace = V4L2_COLORSPACE_SMPTE170M; - - return 0; -} - -static int ak881x_s_mbus_fmt(struct v4l2_subdev *sd, - struct v4l2_mbus_framefmt *mf) -{ - if (mf->field != V4L2_FIELD_INTERLACED || - mf->code != V4L2_MBUS_FMT_YUYV8_2X8) - return -EINVAL; - - return ak881x_try_g_mbus_fmt(sd, mf); -} - -static int ak881x_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index, - enum v4l2_mbus_pixelcode *code) -{ - if (index) - return -EINVAL; - - *code = V4L2_MBUS_FMT_YUYV8_2X8; - return 0; -} - -static int ak881x_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct ak881x *ak881x = to_ak881x(client); - - a->bounds.left = 0; - a->bounds.top = 0; - a->bounds.width = 720; - a->bounds.height = ak881x->lines; - a->defrect = a->bounds; - a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; - a->pixelaspect.numerator = 1; - a->pixelaspect.denominator = 1; - - return 0; -} - -static int ak881x_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct ak881x *ak881x = to_ak881x(client); - u8 vp1; - - if (std == V4L2_STD_NTSC_443) { - vp1 = 3; - ak881x->lines = 480; - } else if (std == V4L2_STD_PAL_M) { - vp1 = 5; - ak881x->lines = 480; - } else if (std == V4L2_STD_PAL_60) { - vp1 = 7; - ak881x->lines = 480; - } else if (std && !(std & ~V4L2_STD_PAL)) { - vp1 = 0xf; - ak881x->lines = 576; - } else if (std && !(std & ~V4L2_STD_NTSC)) { - vp1 = 0; - ak881x->lines = 480; - } else { - /* No SECAM or PAL_N/Nc supported */ - return -EINVAL; - } - - reg_set(client, AK881X_VIDEO_PROCESS1, vp1, 0xf); - - return 0; -} - -static int ak881x_s_stream(struct v4l2_subdev *sd, int enable) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct ak881x *ak881x = to_ak881x(client); - - if (enable) { - u8 dac; - /* For colour-bar testing set bit 6 of AK881X_VIDEO_PROCESS1 */ - /* Default: composite output */ - if (ak881x->pdata->flags & AK881X_COMPONENT) - dac = 3; - else - dac = 4; - /* Turn on the DAC(s) */ - reg_write(client, AK881X_DAC_MODE, dac); - dev_dbg(&client->dev, "chip status 0x%x\n", - reg_read(client, AK881X_STATUS)); - } else { - /* ...and clear bit 6 of AK881X_VIDEO_PROCESS1 here */ - reg_write(client, AK881X_DAC_MODE, 0); - dev_dbg(&client->dev, "chip status 0x%x\n", - reg_read(client, AK881X_STATUS)); - } - - return 0; -} - -static struct v4l2_subdev_core_ops ak881x_subdev_core_ops = { - .g_chip_ident = ak881x_g_chip_ident, -#ifdef CONFIG_VIDEO_ADV_DEBUG - .g_register = ak881x_g_register, - .s_register = ak881x_s_register, -#endif -}; - -static struct v4l2_subdev_video_ops ak881x_subdev_video_ops = { - .s_mbus_fmt = ak881x_s_mbus_fmt, - .g_mbus_fmt = ak881x_try_g_mbus_fmt, - .try_mbus_fmt = ak881x_try_g_mbus_fmt, - .cropcap = ak881x_cropcap, - .enum_mbus_fmt = ak881x_enum_mbus_fmt, - .s_std_output = ak881x_s_std_output, - .s_stream = ak881x_s_stream, -}; - -static struct v4l2_subdev_ops ak881x_subdev_ops = { - .core = &ak881x_subdev_core_ops, - .video = &ak881x_subdev_video_ops, -}; - -static int ak881x_probe(struct i2c_client *client, - const struct i2c_device_id *did) -{ - struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); - struct ak881x *ak881x; - u8 ifmode, data; - - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { - dev_warn(&adapter->dev, - "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); - return -EIO; - } - - ak881x = kzalloc(sizeof(struct ak881x), GFP_KERNEL); - if (!ak881x) - return -ENOMEM; - - v4l2_i2c_subdev_init(&ak881x->subdev, client, &ak881x_subdev_ops); - - data = reg_read(client, AK881X_DEVICE_ID); - - switch (data) { - case 0x13: - ak881x->id = V4L2_IDENT_AK8813; - break; - case 0x14: - ak881x->id = V4L2_IDENT_AK8814; - break; - default: - dev_err(&client->dev, - "No ak881x chip detected, register read %x\n", data); - kfree(ak881x); - return -ENODEV; - } - - ak881x->revision = reg_read(client, AK881X_DEVICE_REVISION); - ak881x->pdata = client->dev.platform_data; - - if (ak881x->pdata) { - if (ak881x->pdata->flags & AK881X_FIELD) - ifmode = 4; - else - ifmode = 0; - - switch (ak881x->pdata->flags & AK881X_IF_MODE_MASK) { - case AK881X_IF_MODE_BT656: - ifmode |= 1; - break; - case AK881X_IF_MODE_MASTER: - ifmode |= 2; - break; - case AK881X_IF_MODE_SLAVE: - default: - break; - } - - dev_dbg(&client->dev, "IF mode %x\n", ifmode); - - /* - * "Line Blanking No." seems to be the same as the number of - * "black" lines on, e.g., SuperH VOU, whose default value of 20 - * "incidentally" matches ak881x' default - */ - reg_write(client, AK881X_INTERFACE_MODE, ifmode | (20 << 3)); - } - - /* Hardware default: NTSC-M */ - ak881x->lines = 480; - - dev_info(&client->dev, "Detected an ak881x chip ID %x, revision %x\n", - data, ak881x->revision); - - return 0; -} - -static int ak881x_remove(struct i2c_client *client) -{ - struct ak881x *ak881x = to_ak881x(client); - - v4l2_device_unregister_subdev(&ak881x->subdev); - kfree(ak881x); - - return 0; -} - -static const struct i2c_device_id ak881x_id[] = { - { "ak8813", 0 }, - { "ak8814", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, ak881x_id); - -static struct i2c_driver ak881x_i2c_driver = { - .driver = { - .name = "ak881x", - }, - .probe = ak881x_probe, - .remove = ak881x_remove, - .id_table = ak881x_id, -}; - -module_i2c_driver(ak881x_i2c_driver); - -MODULE_DESCRIPTION("TV-output driver for ak8813/ak8814"); -MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); -MODULE_LICENSE("GPL v2"); |