diff options
Diffstat (limited to 'drivers/media/video/saa7110.c')
| -rw-r--r-- | drivers/media/video/saa7110.c | 623 |
1 files changed, 623 insertions, 0 deletions
diff --git a/drivers/media/video/saa7110.c b/drivers/media/video/saa7110.c new file mode 100644 index 000000000000..64273b438530 --- /dev/null +++ b/drivers/media/video/saa7110.c @@ -0,0 +1,623 @@ +/* + * 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/io.h> +#include <asm/uaccess.h> + +MODULE_DESCRIPTION("Philips SAA7110 video decoder driver"); +MODULE_AUTHOR("Pauline Middelink"); +MODULE_LICENSE("GPL"); + +#include <linux/i2c.h> +#include <linux/i2c-dev.h> + +#define I2C_NAME(s) (s)->name + +#include <linux/videodev.h> +#include <linux/video_decoder.h> + +static int debug = 0; +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "Debug level (0-1)"); + +#define dprintk(num, format, args...) \ + do { \ + if (debug >= num) \ + printk(format, ##args); \ + } while (0) + +#define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */ +#define SAA7110_MAX_OUTPUT 0 /* its a decoder only */ + +#define I2C_SAA7110 0x9C /* or 0x9E */ + +#define SAA7110_NR_REG 0x35 + +struct saa7110 { + u8 reg[SAA7110_NR_REG]; + + int norm; + int input; + int enable; + int bright; + int contrast; + int hue; + int sat; + + wait_queue_head_t wq; +}; + +/* ----------------------------------------------------------------------- */ +/* I2C support functions */ +/* ----------------------------------------------------------------------- */ + +static int +saa7110_write (struct i2c_client *client, + u8 reg, + u8 value) +{ + struct saa7110 *decoder = i2c_get_clientdata(client); + + decoder->reg[reg] = value; + return i2c_smbus_write_byte_data(client, reg, value); +} + +static int +saa7110_write_block (struct i2c_client *client, + const u8 *data, + unsigned int len) +{ + 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)) { + struct saa7110 *decoder = i2c_get_clientdata(client); + struct i2c_msg msg; + + msg.len = len; + msg.buf = (char *) data; + msg.addr = client->addr; + msg.flags = 0; + ret = i2c_transfer(client->adapter, &msg, 1); + + /* Cache the written data */ + memcpy(decoder->reg + reg, data + 1, len - 1); + } else { + for (++data, --len; len; len--) { + if ((ret = saa7110_write(client, reg++, + *data++)) < 0) + break; + } + } + + return ret; +} + +static inline int +saa7110_read (struct i2c_client *client) +{ + 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 i2c_client *client, + 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 = i2c_get_clientdata(client); + const unsigned char *ptr = modes[chan]; + + saa7110_write(client, 0x06, ptr[0]); /* Luminance control */ + saa7110_write(client, 0x20, ptr[1]); /* Analog Control #1 */ + saa7110_write(client, 0x21, ptr[2]); /* Analog Control #2 */ + saa7110_write(client, 0x22, ptr[3]); /* Mixer Control #1 */ + saa7110_write(client, 0x2C, ptr[4]); /* Mixer Control #2 */ + saa7110_write(client, 0x30, ptr[5]); /* ADCs gain control */ + saa7110_write(client, 0x31, ptr[6]); /* Mixer Control #3 */ + saa7110_write(client, 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 int +determine_norm (struct i2c_client *client) +{ + DEFINE_WAIT(wait); + struct saa7110 *decoder = i2c_get_clientdata(client); + int status; + + /* mode changed, start automatic detection */ + saa7110_write_block(client, initseq, sizeof(initseq)); + saa7110_selmux(client, decoder->input); + prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE); + schedule_timeout(HZ/4); + finish_wait(&decoder->wq, &wait); + status = saa7110_read(client); + if (status & 0x40) { + dprintk(1, KERN_INFO "%s: status=0x%02x (no signal)\n", + I2C_NAME(client), status); + return decoder->norm; // no change + } + if ((status & 3) == 0) { + saa7110_write(client, 0x06, 0x83); + if (status & 0x20) { + dprintk(1, + KERN_INFO + "%s: status=0x%02x (NTSC/no color)\n", + I2C_NAME(client), status); + //saa7110_write(client,0x2E,0x81); + return VIDEO_MODE_NTSC; + } + dprintk(1, KERN_INFO "%s: status=0x%02x (PAL/no color)\n", + I2C_NAME(client), status); + //saa7110_write(client,0x2E,0x9A); + return VIDEO_MODE_PAL; + } + //saa7110_write(client,0x06,0x03); + if (status & 0x20) { /* 60Hz */ + dprintk(1, KERN_INFO "%s: status=0x%02x (NTSC)\n", + I2C_NAME(client), status); + saa7110_write(client, 0x0D, 0x86); + saa7110_write(client, 0x0F, 0x50); + saa7110_write(client, 0x11, 0x2C); + //saa7110_write(client,0x2E,0x81); + return VIDEO_MODE_NTSC; + } + + /* 50Hz -> PAL/SECAM */ + saa7110_write(client, 0x0D, 0x86); + saa7110_write(client, 0x0F, 0x10); + saa7110_write(client, 0x11, 0x59); + //saa7110_write(client,0x2E,0x9A); + + prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE); + schedule_timeout(HZ/4); + finish_wait(&decoder->wq, &wait); + + status = saa7110_read(client); + if ((status & 0x03) == 0x01) { + dprintk(1, KERN_INFO "%s: status=0x%02x (SECAM)\n", + I2C_NAME(client), status); + saa7110_write(client, 0x0D, 0x87); + return VIDEO_MODE_SECAM; + } + dprintk(1, KERN_INFO "%s: status=0x%02x (PAL)\n", I2C_NAME(client), + status); + return VIDEO_MODE_PAL; +} + +static int +saa7110_command (struct i2c_client *client, + unsigned int cmd, + void *arg) +{ + struct saa7110 *decoder = i2c_get_clientdata(client); + int v; + + switch (cmd) { + case 0: + //saa7110_write_block(client, initseq, sizeof(initseq)); + break; + + case DECODER_GET_CAPABILITIES: + { + struct video_decoder_capability *dc = arg; + + dc->flags = + VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC | + VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO; + dc->inputs = SAA7110_MAX_INPUT; + dc->outputs = SAA7110_MAX_OUTPUT; + } + break; + + case DECODER_GET_STATUS: + { + int status; + int res = 0; + + status = saa7110_read(client); + dprintk(1, KERN_INFO "%s: status=0x%02x norm=%d\n", + I2C_NAME(client), status, decoder->norm); + if (!(status & 0x40)) + res |= DECODER_STATUS_GOOD; + if (status & 0x03) + res |= DECODER_STATUS_COLOR; + + switch (decoder->norm) { + case VIDEO_MODE_NTSC: + res |= DECODER_STATUS_NTSC; + break; + case VIDEO_MODE_PAL: + res |= DECODER_STATUS_PAL; + break; + case VIDEO_MODE_SECAM: + res |= DECODER_STATUS_SECAM; + break; + } + *(int *) arg = res; + } + break; + + case DECODER_SET_NORM: + v = *(int *) arg; + if (decoder->norm != v) { + decoder->norm = v; + //saa7110_write(client, 0x06, 0x03); + switch (v) { + case VIDEO_MODE_NTSC: + saa7110_write(client, 0x0D, 0x86); + saa7110_write(client, 0x0F, 0x50); + saa7110_write(client, 0x11, 0x2C); + //saa7110_write(client, 0x2E, 0x81); + dprintk(1, + KERN_INFO "%s: switched to NTSC\n", + I2C_NAME(client)); + break; + case VIDEO_MODE_PAL: + saa7110_write(client, 0x0D, 0x86); + saa7110_write(client, 0x0F, 0x10); + saa7110_write(client, 0x11, 0x59); + //saa7110_write(client, 0x2E, 0x9A); + dprintk(1, + KERN_INFO "%s: switched to PAL\n", + I2C_NAME(client)); + break; + case VIDEO_MODE_SECAM: + saa7110_write(client, 0x0D, 0x87); + saa7110_write(client, 0x0F, 0x10); + saa7110_write(client, 0x11, 0x59); + //saa7110_write(client, 0x2E, 0x9A); + dprintk(1, + KERN_INFO + "%s: switched to SECAM\n", + I2C_NAME(client)); + break; + case VIDEO_MODE_AUTO: + dprintk(1, + KERN_INFO + "%s: TV standard detection...\n", + I2C_NAME(client)); + decoder->norm = determine_norm(client); + *(int *) arg = decoder->norm; + break; + default: + return -EPERM; + } + } + break; + + case DECODER_SET_INPUT: + v = *(int *) arg; + if (v < 0 || v > SAA7110_MAX_INPUT) { + dprintk(1, + KERN_INFO "%s: input=%d not available\n", + I2C_NAME(client), v); + return -EINVAL; + } + if (decoder->input != v) { + saa7110_selmux(client, v); + dprintk(1, KERN_INFO "%s: switched to input=%d\n", + I2C_NAME(client), v); + } + break; + + case DECODER_SET_OUTPUT: + v = *(int *) arg; + /* not much choice of outputs */ + if (v != 0) + return -EINVAL; + break; + + case DECODER_ENABLE_OUTPUT: + v = *(int *) arg; + if (decoder->enable != v) { + decoder->enable = v; + saa7110_write(client, 0x0E, v ? 0x18 : 0x80); + dprintk(1, KERN_INFO "%s: YUV %s\n", I2C_NAME(client), + v ? "on" : "off"); + } + break; + + case DECODER_SET_PICTURE: + { + struct video_picture *pic = arg; + + if (decoder->bright != pic->brightness) { + /* We want 0 to 255 we get 0-65535 */ + decoder->bright = pic->brightness; + saa7110_write(client, 0x19, decoder->bright >> 8); + } + if (decoder->contrast != pic->contrast) { + /* We want 0 to 127 we get 0-65535 */ + decoder->contrast = pic->contrast; + saa7110_write(client, 0x13, + decoder->contrast >> 9); + } + if (decoder->sat != pic->colour) { + /* We want 0 to 127 we get 0-65535 */ + decoder->sat = pic->colour; + saa7110_write(client, 0x12, decoder->sat >> 9); + } + if (decoder->hue != pic->hue) { + /* We want -128 to 127 we get 0-65535 */ + decoder->hue = pic->hue; + saa7110_write(client, 0x07, + (decoder->hue >> 8) - 128); + } + } + break; + + case DECODER_DUMP: + for (v = 0; v < 0x34; v += 16) { + int j; + dprintk(1, KERN_INFO "%s: %03x\n", I2C_NAME(client), + v); + for (j = 0; j < 16; j++) { + dprintk(1, KERN_INFO " %02x", + decoder->reg[v + j]); + } + dprintk(1, KERN_INFO "\n"); + } + break; + + default: + dprintk(1, KERN_INFO "unknown saa7110_command??(%d)\n", + cmd); + return -EINVAL; + } + return 0; +} + +/* ----------------------------------------------------------------------- */ + +/* + * Generic i2c probe + * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' + */ +static unsigned short normal_i2c[] = { + I2C_SAA7110 >> 1, + (I2C_SAA7110 >> 1) + 1, + I2C_CLIENT_END +}; +static unsigned short normal_i2c_range[] = { I2C_CLIENT_END }; + +static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short force[2] = { I2C_CLIENT_END , I2C_CLIENT_END }; + +static struct i2c_client_address_data addr_data = { + .normal_i2c = normal_i2c, + .normal_i2c_range = normal_i2c_range, + .probe = probe, + .probe_range = probe_range, + .ignore = ignore, + .ignore_range = ignore_range, + .force = force +}; + +static struct i2c_driver i2c_driver_saa7110; + +static int +saa7110_detect_client (struct i2c_adapter *adapter, + int address, + int kind) +{ + struct i2c_client *client; + struct saa7110 *decoder; + int rv; + + dprintk(1, + KERN_INFO + "saa7110.c: detecting saa7110 client on address 0x%x\n", + address << 1); + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality + (adapter, + I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) + return 0; + + client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + if (client == 0) + return -ENOMEM; + memset(client, 0, sizeof(struct i2c_client)); + client->addr = address; + client->adapter = adapter; + client->driver = &i2c_driver_saa7110; + client->flags = I2C_CLIENT_ALLOW_USE; + strlcpy(I2C_NAME(client), "saa7110", sizeof(I2C_NAME(client))); + + decoder = kmalloc(sizeof(struct saa7110), GFP_KERNEL); + if (decoder == 0) { + kfree(client); + return -ENOMEM; + } + memset(decoder, 0, sizeof(struct saa7110)); + decoder->norm = VIDEO_MODE_PAL; + decoder->input = 0; + decoder->enable = 1; + decoder->bright = 32768; + decoder->contrast = 32768; + decoder->hue = 32768; + decoder->sat = 32768; + init_waitqueue_head(&decoder->wq); + i2c_set_clientdata(client, decoder); + + rv = i2c_attach_client(client); + if (rv) { + kfree(client); + kfree(decoder); + return rv; + } + + rv = saa7110_write_block(client, initseq, sizeof(initseq)); + if (rv < 0) + dprintk(1, KERN_ERR "%s_attach: init status %d\n", + I2C_NAME(client), rv); + else { + int ver, status; + saa7110_write(client, 0x21, 0x10); + saa7110_write(client, 0x0e, 0x18); + saa7110_write(client, 0x0D, 0x04); + ver = saa7110_read(client); + saa7110_write(client, 0x0D, 0x06); + //mdelay(150); + status = saa7110_read(client); + dprintk(1, + KERN_INFO + "%s_attach: SAA7110A version %x at 0x%02x, status=0x%02x\n", + I2C_NAME(client), ver, client->addr << 1, status); + saa7110_write(client, 0x0D, 0x86); + saa7110_write(client, 0x0F, 0x10); + saa7110_write(client, 0x11, 0x59); + //saa7110_write(client, 0x2E, 0x9A); + } + + //saa7110_selmux(client,0); + //determine_norm(client); + /* setup and implicit mode 0 select has been performed */ + + return 0; +} + +static int +saa7110_attach_adapter (struct i2c_adapter *adapter) +{ + dprintk(1, + KERN_INFO + "saa7110.c: starting probe for adapter %s (0x%x)\n", + I2C_NAME(adapter), adapter->id); + return i2c_probe(adapter, &addr_data, &saa7110_detect_client); +} + +static int +saa7110_detach_client (struct i2c_client *client) +{ + struct saa7110 *decoder = i2c_get_clientdata(client); + int err; + + err = i2c_detach_client(client); + if (err) { + return err; + } + + kfree(decoder); + kfree(client); + + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static struct i2c_driver i2c_driver_saa7110 = { + .owner = THIS_MODULE, + .name = "saa7110", + + .id = I2C_DRIVERID_SAA7110, + .flags = I2C_DF_NOTIFY, + + .attach_adapter = saa7110_attach_adapter, + .detach_client = saa7110_detach_client, + .command = saa7110_command, +}; + +static int __init +saa7110_init (void) +{ + return i2c_add_driver(&i2c_driver_saa7110); +} + +static void __exit +saa7110_exit (void) +{ + i2c_del_driver(&i2c_driver_saa7110); +} + +module_init(saa7110_init); +module_exit(saa7110_exit); |