diff options
Diffstat (limited to 'drivers/media/i2c/saa7110.c')
| -rw-r--r-- | drivers/media/i2c/saa7110.c | 494 |
1 files changed, 494 insertions, 0 deletions
diff --git a/drivers/media/i2c/saa7110.c b/drivers/media/i2c/saa7110.c new file mode 100644 index 0000000..51cd4c8 --- /dev/null +++ b/drivers/media/i2c/saa7110.c @@ -0,0 +1,494 @@ +/* + * saa7110 - Philips SAA7110(A) video decoder driver + * + * Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl> + * + * 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/init.h> +#include <linux/types.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/wait.h> +#include <asm/uaccess.h> +#include <linux/i2c.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/v4l2-chip-ident.h> +#include <media/v4l2-ctrls.h> + +MODULE_DESCRIPTION("Philips SAA7110 video decoder driver"); +MODULE_AUTHOR("Pauline Middelink"); +MODULE_LICENSE("GPL"); + + +static int debug; +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "Debug level (0-1)"); + +#define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */ +#define SAA7110_MAX_OUTPUT 1 /* 1 YUV */ + +#define SAA7110_NR_REG 0x35 + +struct saa7110 { + struct v4l2_subdev sd; + struct v4l2_ctrl_handler hdl; + u8 reg[SAA7110_NR_REG]; + + v4l2_std_id norm; + int input; + int enable; + + wait_queue_head_t wq; +}; + +static inline struct saa7110 *to_saa7110(struct v4l2_subdev *sd) +{ + return container_of(sd, struct saa7110, sd); +} + +static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) +{ + return &container_of(ctrl->handler, struct saa7110, hdl)->sd; +} + +/* ----------------------------------------------------------------------- */ +/* I2C support functions */ +/* ----------------------------------------------------------------------- */ + +static int saa7110_write(struct v4l2_subdev *sd, u8 reg, u8 value) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct saa7110 *decoder = to_saa7110(sd); + + decoder->reg[reg] = value; + return i2c_smbus_write_byte_data(client, reg, value); +} + +static int saa7110_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct saa7110 *decoder = to_saa7110(sd); + int ret = -1; + u8 reg = *data; /* first register to write to */ + + /* Sanity check */ + if (reg + (len - 1) > SAA7110_NR_REG) + return ret; + + /* the saa7110 has an autoincrement function, use it if + * the adapter understands raw I2C */ + if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + ret = i2c_master_send(client, data, len); + + /* Cache the written data */ + memcpy(decoder->reg + reg, data + 1, len - 1); + } else { + for (++data, --len; len; len--) { + ret = saa7110_write(sd, reg++, *data++); + if (ret < 0) + break; + } + } + + return ret; +} + +static inline int saa7110_read(struct v4l2_subdev *sd) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + return i2c_smbus_read_byte(client); +} + +/* ----------------------------------------------------------------------- */ +/* SAA7110 functions */ +/* ----------------------------------------------------------------------- */ + +#define FRESP_06H_COMPST 0x03 /*0x13*/ +#define FRESP_06H_SVIDEO 0x83 /*0xC0*/ + + +static int saa7110_selmux(struct v4l2_subdev *sd, int chan) +{ + static const unsigned char modes[9][8] = { + /* mode 0 */ + {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03, + 0x44, 0x75, 0x16}, + /* mode 1 */ + {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03, + 0x44, 0x75, 0x16}, + /* mode 2 */ + {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03, + 0x60, 0xB5, 0x05}, + /* mode 3 */ + {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03, + 0x60, 0xB5, 0x05}, + /* mode 4 */ + {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83, + 0x60, 0xB5, 0x03}, + /* mode 5 */ + {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83, + 0x60, 0xB5, 0x03}, + /* mode 6 */ + {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3, + 0x44, 0x75, 0x12}, + /* mode 7 */ + {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13, + 0x60, 0xB5, 0x14}, + /* mode 8 */ + {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23, + 0x44, 0x75, 0x21} + }; + struct saa7110 *decoder = to_saa7110(sd); + const unsigned char *ptr = modes[chan]; + + saa7110_write(sd, 0x06, ptr[0]); /* Luminance control */ + saa7110_write(sd, 0x20, ptr[1]); /* Analog Control #1 */ + saa7110_write(sd, 0x21, ptr[2]); /* Analog Control #2 */ + saa7110_write(sd, 0x22, ptr[3]); /* Mixer Control #1 */ + saa7110_write(sd, 0x2C, ptr[4]); /* Mixer Control #2 */ + saa7110_write(sd, 0x30, ptr[5]); /* ADCs gain control */ + saa7110_write(sd, 0x31, ptr[6]); /* Mixer Control #3 */ + saa7110_write(sd, 0x21, ptr[7]); /* Analog Control #2 */ + decoder->input = chan; + + return 0; +} + +static const unsigned char initseq[1 + SAA7110_NR_REG] = { + 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00, + /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90, + /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA, + /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F, + /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C, + /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02 +}; + +static v4l2_std_id determine_norm(struct v4l2_subdev *sd) +{ + DEFINE_WAIT(wait); + struct saa7110 *decoder = to_saa7110(sd); + int status; + + /* mode changed, start automatic detection */ + saa7110_write_block(sd, initseq, sizeof(initseq)); + saa7110_selmux(sd, decoder->input); + prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE); + schedule_timeout(msecs_to_jiffies(250)); + finish_wait(&decoder->wq, &wait); + status = saa7110_read(sd); + if (status & 0x40) { + v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status); + return decoder->norm; /* no change*/ + } + if ((status & 3) == 0) { + saa7110_write(sd, 0x06, 0x83); + if (status & 0x20) { + v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC/no color)\n", status); + /*saa7110_write(sd,0x2E,0x81);*/ + return V4L2_STD_NTSC; + } + v4l2_dbg(1, debug, sd, "status=0x%02x (PAL/no color)\n", status); + /*saa7110_write(sd,0x2E,0x9A);*/ + return V4L2_STD_PAL; + } + /*saa7110_write(sd,0x06,0x03);*/ + if (status & 0x20) { /* 60Hz */ + v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC)\n", status); + saa7110_write(sd, 0x0D, 0x86); + saa7110_write(sd, 0x0F, 0x50); + saa7110_write(sd, 0x11, 0x2C); + /*saa7110_write(sd,0x2E,0x81);*/ + return V4L2_STD_NTSC; + } + + /* 50Hz -> PAL/SECAM */ + saa7110_write(sd, 0x0D, 0x86); + saa7110_write(sd, 0x0F, 0x10); + saa7110_write(sd, 0x11, 0x59); + /*saa7110_write(sd,0x2E,0x9A);*/ + + prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE); + schedule_timeout(msecs_to_jiffies(250)); + finish_wait(&decoder->wq, &wait); + + status = saa7110_read(sd); + if ((status & 0x03) == 0x01) { + v4l2_dbg(1, debug, sd, "status=0x%02x (SECAM)\n", status); + saa7110_write(sd, 0x0D, 0x87); + return V4L2_STD_SECAM; + } + v4l2_dbg(1, debug, sd, "status=0x%02x (PAL)\n", status); + return V4L2_STD_PAL; +} + +static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus) +{ + struct saa7110 *decoder = to_saa7110(sd); + int res = V4L2_IN_ST_NO_SIGNAL; + int status = saa7110_read(sd); + + v4l2_dbg(1, debug, sd, "status=0x%02x norm=%llx\n", + status, (unsigned long long)decoder->norm); + if (!(status & 0x40)) + res = 0; + if (!(status & 0x03)) + res |= V4L2_IN_ST_NO_COLOR; + + *pstatus = res; + return 0; +} + +static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std) +{ + *(v4l2_std_id *)std = determine_norm(sd); + return 0; +} + +static int saa7110_s_std(struct v4l2_subdev *sd, v4l2_std_id std) +{ + struct saa7110 *decoder = to_saa7110(sd); + + if (decoder->norm != std) { + decoder->norm = std; + /*saa7110_write(sd, 0x06, 0x03);*/ + if (std & V4L2_STD_NTSC) { + saa7110_write(sd, 0x0D, 0x86); + saa7110_write(sd, 0x0F, 0x50); + saa7110_write(sd, 0x11, 0x2C); + /*saa7110_write(sd, 0x2E, 0x81);*/ + v4l2_dbg(1, debug, sd, "switched to NTSC\n"); + } else if (std & V4L2_STD_PAL) { + saa7110_write(sd, 0x0D, 0x86); + saa7110_write(sd, 0x0F, 0x10); + saa7110_write(sd, 0x11, 0x59); + /*saa7110_write(sd, 0x2E, 0x9A);*/ + v4l2_dbg(1, debug, sd, "switched to PAL\n"); + } else if (std & V4L2_STD_SECAM) { + saa7110_write(sd, 0x0D, 0x87); + saa7110_write(sd, 0x0F, 0x10); + saa7110_write(sd, 0x11, 0x59); + /*saa7110_write(sd, 0x2E, 0x9A);*/ + v4l2_dbg(1, debug, sd, "switched to SECAM\n"); + } else { + return -EINVAL; + } + } + return 0; +} + +static int saa7110_s_routing(struct v4l2_subdev *sd, + u32 input, u32 output, u32 config) +{ + struct saa7110 *decoder = to_saa7110(sd); + + if (input >= SAA7110_MAX_INPUT) { + v4l2_dbg(1, debug, sd, "input=%d not available\n", input); + return -EINVAL; + } + if (decoder->input != input) { + saa7110_selmux(sd, input); + v4l2_dbg(1, debug, sd, "switched to input=%d\n", input); + } + return 0; +} + +static int saa7110_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct saa7110 *decoder = to_saa7110(sd); + + if (decoder->enable != enable) { + decoder->enable = enable; + saa7110_write(sd, 0x0E, enable ? 0x18 : 0x80); + v4l2_dbg(1, debug, sd, "YUV %s\n", enable ? "on" : "off"); + } + return 0; +} + +static int saa7110_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct v4l2_subdev *sd = to_sd(ctrl); + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + saa7110_write(sd, 0x19, ctrl->val); + break; + case V4L2_CID_CONTRAST: + saa7110_write(sd, 0x13, ctrl->val); + break; + case V4L2_CID_SATURATION: + saa7110_write(sd, 0x12, ctrl->val); + break; + case V4L2_CID_HUE: + saa7110_write(sd, 0x07, ctrl->val); + break; + default: + return -EINVAL; + } + return 0; +} + +static int saa7110_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_SAA7110, 0); +} + +/* ----------------------------------------------------------------------- */ + +static const struct v4l2_ctrl_ops saa7110_ctrl_ops = { + .s_ctrl = saa7110_s_ctrl, +}; + +static const struct v4l2_subdev_core_ops saa7110_core_ops = { + .g_chip_ident = saa7110_g_chip_ident, + .g_ext_ctrls = v4l2_subdev_g_ext_ctrls, + .try_ext_ctrls = v4l2_subdev_try_ext_ctrls, + .s_ext_ctrls = v4l2_subdev_s_ext_ctrls, + .g_ctrl = v4l2_subdev_g_ctrl, + .s_ctrl = v4l2_subdev_s_ctrl, + .queryctrl = v4l2_subdev_queryctrl, + .querymenu = v4l2_subdev_querymenu, + .s_std = saa7110_s_std, +}; + +static const struct v4l2_subdev_video_ops saa7110_video_ops = { + .s_routing = saa7110_s_routing, + .s_stream = saa7110_s_stream, + .querystd = saa7110_querystd, + .g_input_status = saa7110_g_input_status, +}; + +static const struct v4l2_subdev_ops saa7110_ops = { + .core = &saa7110_core_ops, + .video = &saa7110_video_ops, +}; + +/* ----------------------------------------------------------------------- */ + +static int saa7110_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct saa7110 *decoder; + struct v4l2_subdev *sd; + int rv; + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) + return -ENODEV; + + v4l_info(client, "chip found @ 0x%x (%s)\n", + client->addr << 1, client->adapter->name); + + decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL); + if (!decoder) + return -ENOMEM; + sd = &decoder->sd; + v4l2_i2c_subdev_init(sd, client, &saa7110_ops); + decoder->norm = V4L2_STD_PAL; + decoder->input = 0; + decoder->enable = 1; + v4l2_ctrl_handler_init(&decoder->hdl, 2); + v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops, + V4L2_CID_BRIGHTNESS, 0, 255, 1, 128); + v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops, + V4L2_CID_CONTRAST, 0, 127, 1, 64); + v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops, + V4L2_CID_SATURATION, 0, 127, 1, 64); + v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops, + V4L2_CID_HUE, -128, 127, 1, 0); + sd->ctrl_handler = &decoder->hdl; + if (decoder->hdl.error) { + int err = decoder->hdl.error; + + v4l2_ctrl_handler_free(&decoder->hdl); + kfree(decoder); + return err; + } + v4l2_ctrl_handler_setup(&decoder->hdl); + + init_waitqueue_head(&decoder->wq); + + rv = saa7110_write_block(sd, initseq, sizeof(initseq)); + if (rv < 0) { + v4l2_dbg(1, debug, sd, "init status %d\n", rv); + } else { + int ver, status; + saa7110_write(sd, 0x21, 0x10); + saa7110_write(sd, 0x0e, 0x18); + saa7110_write(sd, 0x0D, 0x04); + ver = saa7110_read(sd); + saa7110_write(sd, 0x0D, 0x06); + /*mdelay(150);*/ + status = saa7110_read(sd); + v4l2_dbg(1, debug, sd, "version %x, status=0x%02x\n", + ver, status); + saa7110_write(sd, 0x0D, 0x86); + saa7110_write(sd, 0x0F, 0x10); + saa7110_write(sd, 0x11, 0x59); + /*saa7110_write(sd, 0x2E, 0x9A);*/ + } + + /*saa7110_selmux(sd,0);*/ + /*determine_norm(sd);*/ + /* setup and implicit mode 0 select has been performed */ + + return 0; +} + +static int saa7110_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct saa7110 *decoder = to_saa7110(sd); + + v4l2_device_unregister_subdev(sd); + v4l2_ctrl_handler_free(&decoder->hdl); + kfree(decoder); + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static const struct i2c_device_id saa7110_id[] = { + { "saa7110", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, saa7110_id); + +static struct i2c_driver saa7110_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "saa7110", + }, + .probe = saa7110_probe, + .remove = saa7110_remove, + .id_table = saa7110_id, +}; + +module_i2c_driver(saa7110_driver); |