diff options
Diffstat (limited to 'drivers/media/i2c/adv7170.c')
| -rw-r--r-- | drivers/media/i2c/adv7170.c | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/drivers/media/i2c/adv7170.c b/drivers/media/i2c/adv7170.c new file mode 100644 index 0000000..6bc01fb --- /dev/null +++ b/drivers/media/i2c/adv7170.c @@ -0,0 +1,410 @@ +/* + * adv7170 - adv7170, adv7171 video encoder driver version 0.0.1 + * + * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com> + * + * Based on adv7176 driver by: + * + * Copyright (C) 1998 Dave Perks <dperks@ibm.net> + * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net> + * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> + * - some corrections for Pinnacle Systems Inc. DC10plus card. + * + * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> + * - moved over to linux>=2.4.x i2c protocol (1/1/2003) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/ioctl.h> +#include <asm/uaccess.h> +#include <linux/i2c.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/v4l2-chip-ident.h> + +MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver"); +MODULE_AUTHOR("Maxim Yevtyushkin"); +MODULE_LICENSE("GPL"); + + +static int debug; +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "Debug level (0-1)"); + +/* ----------------------------------------------------------------------- */ + +struct adv7170 { + struct v4l2_subdev sd; + unsigned char reg[128]; + + v4l2_std_id norm; + int input; +}; + +static inline struct adv7170 *to_adv7170(struct v4l2_subdev *sd) +{ + return container_of(sd, struct adv7170, sd); +} + +static char *inputs[] = { "pass_through", "play_back" }; + +static enum v4l2_mbus_pixelcode adv7170_codes[] = { + V4L2_MBUS_FMT_UYVY8_2X8, + V4L2_MBUS_FMT_UYVY8_1X16, +}; + +/* ----------------------------------------------------------------------- */ + +static inline int adv7170_write(struct v4l2_subdev *sd, u8 reg, u8 value) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct adv7170 *encoder = to_adv7170(sd); + + encoder->reg[reg] = value; + return i2c_smbus_write_byte_data(client, reg, value); +} + +static inline int adv7170_read(struct v4l2_subdev *sd, u8 reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + return i2c_smbus_read_byte_data(client, reg); +} + +static int adv7170_write_block(struct v4l2_subdev *sd, + const u8 *data, unsigned int len) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct adv7170 *encoder = to_adv7170(sd); + int ret = -1; + u8 reg; + + /* the adv7170 has an autoincrement function, use it if + * the adapter understands raw I2C */ + if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + /* do raw I2C, not smbus compatible */ + u8 block_data[32]; + int block_len; + + while (len >= 2) { + block_len = 0; + block_data[block_len++] = reg = data[0]; + do { + block_data[block_len++] = + encoder->reg[reg++] = data[1]; + len -= 2; + data += 2; + } while (len >= 2 && data[0] == reg && block_len < 32); + ret = i2c_master_send(client, block_data, block_len); + if (ret < 0) + break; + } + } else { + /* do some slow I2C emulation kind of thing */ + while (len >= 2) { + reg = *data++; + ret = adv7170_write(sd, reg, *data++); + if (ret < 0) + break; + len -= 2; + } + } + return ret; +} + +/* ----------------------------------------------------------------------- */ + +#define TR0MODE 0x4c +#define TR0RST 0x80 + +#define TR1CAPT 0x00 +#define TR1PLAY 0x00 + +static const unsigned char init_NTSC[] = { + 0x00, 0x10, /* MR0 */ + 0x01, 0x20, /* MR1 */ + 0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */ + 0x03, 0x80, /* MR3 */ + 0x04, 0x30, /* MR4 */ + 0x05, 0x00, /* Reserved */ + 0x06, 0x00, /* Reserved */ + 0x07, TR0MODE, /* TM0 */ + 0x08, TR1CAPT, /* TM1 */ + 0x09, 0x16, /* Fsc0 */ + 0x0a, 0x7c, /* Fsc1 */ + 0x0b, 0xf0, /* Fsc2 */ + 0x0c, 0x21, /* Fsc3 */ + 0x0d, 0x00, /* Subcarrier Phase */ + 0x0e, 0x00, /* Closed Capt. Ext 0 */ + 0x0f, 0x00, /* Closed Capt. Ext 1 */ + 0x10, 0x00, /* Closed Capt. 0 */ + 0x11, 0x00, /* Closed Capt. 1 */ + 0x12, 0x00, /* Pedestal Ctl 0 */ + 0x13, 0x00, /* Pedestal Ctl 1 */ + 0x14, 0x00, /* Pedestal Ctl 2 */ + 0x15, 0x00, /* Pedestal Ctl 3 */ + 0x16, 0x00, /* CGMS_WSS_0 */ + 0x17, 0x00, /* CGMS_WSS_1 */ + 0x18, 0x00, /* CGMS_WSS_2 */ + 0x19, 0x00, /* Teletext Ctl */ +}; + +static const unsigned char init_PAL[] = { + 0x00, 0x71, /* MR0 */ + 0x01, 0x20, /* MR1 */ + 0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */ + 0x03, 0x80, /* MR3 */ + 0x04, 0x30, /* MR4 */ + 0x05, 0x00, /* Reserved */ + 0x06, 0x00, /* Reserved */ + 0x07, TR0MODE, /* TM0 */ + 0x08, TR1CAPT, /* TM1 */ + 0x09, 0xcb, /* Fsc0 */ + 0x0a, 0x8a, /* Fsc1 */ + 0x0b, 0x09, /* Fsc2 */ + 0x0c, 0x2a, /* Fsc3 */ + 0x0d, 0x00, /* Subcarrier Phase */ + 0x0e, 0x00, /* Closed Capt. Ext 0 */ + 0x0f, 0x00, /* Closed Capt. Ext 1 */ + 0x10, 0x00, /* Closed Capt. 0 */ + 0x11, 0x00, /* Closed Capt. 1 */ + 0x12, 0x00, /* Pedestal Ctl 0 */ + 0x13, 0x00, /* Pedestal Ctl 1 */ + 0x14, 0x00, /* Pedestal Ctl 2 */ + 0x15, 0x00, /* Pedestal Ctl 3 */ + 0x16, 0x00, /* CGMS_WSS_0 */ + 0x17, 0x00, /* CGMS_WSS_1 */ + 0x18, 0x00, /* CGMS_WSS_2 */ + 0x19, 0x00, /* Teletext Ctl */ +}; + + +static int adv7170_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) +{ + struct adv7170 *encoder = to_adv7170(sd); + + v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std); + + if (std & V4L2_STD_NTSC) { + adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC)); + if (encoder->input == 0) + adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */ + adv7170_write(sd, 0x07, TR0MODE | TR0RST); + adv7170_write(sd, 0x07, TR0MODE); + } else if (std & V4L2_STD_PAL) { + adv7170_write_block(sd, init_PAL, sizeof(init_PAL)); + if (encoder->input == 0) + adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */ + adv7170_write(sd, 0x07, TR0MODE | TR0RST); + adv7170_write(sd, 0x07, TR0MODE); + } else { + v4l2_dbg(1, debug, sd, "illegal norm: %llx\n", + (unsigned long long)std); + return -EINVAL; + } + v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std); + encoder->norm = std; + return 0; +} + +static int adv7170_s_routing(struct v4l2_subdev *sd, + u32 input, u32 output, u32 config) +{ + struct adv7170 *encoder = to_adv7170(sd); + + /* RJ: input = 0: input is from decoder + input = 1: input is from ZR36060 + input = 2: color bar */ + + v4l2_dbg(1, debug, sd, "set input from %s\n", + input == 0 ? "decoder" : "ZR36060"); + + switch (input) { + case 0: + adv7170_write(sd, 0x01, 0x20); + adv7170_write(sd, 0x08, TR1CAPT); /* TR1 */ + adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */ + adv7170_write(sd, 0x07, TR0MODE | TR0RST); + adv7170_write(sd, 0x07, TR0MODE); + /* udelay(10); */ + break; + + case 1: + adv7170_write(sd, 0x01, 0x00); + adv7170_write(sd, 0x08, TR1PLAY); /* TR1 */ + adv7170_write(sd, 0x02, 0x08); + adv7170_write(sd, 0x07, TR0MODE | TR0RST); + adv7170_write(sd, 0x07, TR0MODE); + /* udelay(10); */ + break; + + default: + v4l2_dbg(1, debug, sd, "illegal input: %d\n", input); + return -EINVAL; + } + v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]); + encoder->input = input; + return 0; +} + +static int adv7170_enum_fmt(struct v4l2_subdev *sd, unsigned int index, + enum v4l2_mbus_pixelcode *code) +{ + if (index >= ARRAY_SIZE(adv7170_codes)) + return -EINVAL; + + *code = adv7170_codes[index]; + return 0; +} + +static int adv7170_g_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + u8 val = adv7170_read(sd, 0x7); + + if ((val & 0x40) == (1 << 6)) + mf->code = V4L2_MBUS_FMT_UYVY8_1X16; + else + mf->code = V4L2_MBUS_FMT_UYVY8_2X8; + + mf->colorspace = V4L2_COLORSPACE_SMPTE170M; + mf->width = 0; + mf->height = 0; + mf->field = V4L2_FIELD_ANY; + + return 0; +} + +static int adv7170_s_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + u8 val = adv7170_read(sd, 0x7); + int ret; + + switch (mf->code) { + case V4L2_MBUS_FMT_UYVY8_2X8: + val &= ~0x40; + break; + + case V4L2_MBUS_FMT_UYVY8_1X16: + val |= 0x40; + break; + + default: + v4l2_dbg(1, debug, sd, + "illegal v4l2_mbus_framefmt code: %d\n", mf->code); + return -EINVAL; + } + + ret = adv7170_write(sd, 0x7, val); + + return ret; +} + +static int adv7170_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7170, 0); +} + +/* ----------------------------------------------------------------------- */ + +static const struct v4l2_subdev_core_ops adv7170_core_ops = { + .g_chip_ident = adv7170_g_chip_ident, +}; + +static const struct v4l2_subdev_video_ops adv7170_video_ops = { + .s_std_output = adv7170_s_std_output, + .s_routing = adv7170_s_routing, + .s_mbus_fmt = adv7170_s_fmt, + .g_mbus_fmt = adv7170_g_fmt, + .enum_mbus_fmt = adv7170_enum_fmt, +}; + +static const struct v4l2_subdev_ops adv7170_ops = { + .core = &adv7170_core_ops, + .video = &adv7170_video_ops, +}; + +/* ----------------------------------------------------------------------- */ + +static int adv7170_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct adv7170 *encoder; + struct v4l2_subdev *sd; + int i; + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; + + v4l_info(client, "chip found @ 0x%x (%s)\n", + client->addr << 1, client->adapter->name); + + encoder = kzalloc(sizeof(struct adv7170), GFP_KERNEL); + if (encoder == NULL) + return -ENOMEM; + sd = &encoder->sd; + v4l2_i2c_subdev_init(sd, client, &adv7170_ops); + encoder->norm = V4L2_STD_NTSC; + encoder->input = 0; + + i = adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC)); + if (i >= 0) { + i = adv7170_write(sd, 0x07, TR0MODE | TR0RST); + i = adv7170_write(sd, 0x07, TR0MODE); + i = adv7170_read(sd, 0x12); + v4l2_dbg(1, debug, sd, "revision %d\n", i & 1); + } + if (i < 0) + v4l2_dbg(1, debug, sd, "init error 0x%x\n", i); + return 0; +} + +static int adv7170_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + + v4l2_device_unregister_subdev(sd); + kfree(to_adv7170(sd)); + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static const struct i2c_device_id adv7170_id[] = { + { "adv7170", 0 }, + { "adv7171", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, adv7170_id); + +static struct i2c_driver adv7170_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "adv7170", + }, + .probe = adv7170_probe, + .remove = adv7170_remove, + .id_table = adv7170_id, +}; + +module_i2c_driver(adv7170_driver); |