1 files changed, 660 insertions, 0 deletions

diff --git a/drivers/media/video/bt819.c b/drivers/media/video/bt819.c
new file mode 100644
index 000000000000..cf0db2554a80
--- /dev/null
+++ b/drivers/media/video/bt819.c
@@ -0,0 +1,660 @@
+/* 
+ *  bt819 - BT819A VideoStream Decoder (Rockwell Part)
+ *
+ * Copyright (C) 1999 Mike Bernson <mike@mlb.org>
+ * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
+ *
+ * Modifications for LML33/DC10plus unified driver
+ * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
+ *  
+ * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *    - moved over to linux>=2.4.x i2c protocol (9/9/2002)
+ *
+ * This code was modify/ported from the saa7111 driver written
+ * by Dave Perks.
+ *
+ * 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/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/signal.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <linux/sched.h>
+#include <asm/segment.h>
+#include <linux/types.h>
+
+#include <linux/videodev.h>
+#include <asm/uaccess.h>
+
+MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
+MODULE_AUTHOR("Mike Bernson & Dave Perks");
+MODULE_LICENSE("GPL");
+
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+
+#define I2C_NAME(s) (s)->name
+
+#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)
+
+/* ----------------------------------------------------------------------- */
+
+struct bt819 {
+        unsigned char reg[32];
+
+        int initialized;
+        int norm;
+        int input;
+        int enable;
+        int bright;
+        int contrast;
+        int hue;
+        int sat;
+};
+
+struct timing {
+        int hactive;
+        int hdelay;
+        int vactive;
+        int vdelay;
+        int hscale;
+        int vscale;
+};
+
+/* for values, see the bt819 datasheet */
+static struct timing timing_data[] = {
+        {864 - 24, 20, 625 - 2, 1, 0x0504, 0x0000},
+        {858 - 24, 20, 525 - 2, 1, 0x00f8, 0x0000},
+};
+
+#define   I2C_BT819        0x8a
+
+/* ----------------------------------------------------------------------- */
+
+static inline int
+bt819_write (struct i2c_client *client,
+             u8                 reg,
+             u8                 value)
+{
+        struct bt819 *decoder = i2c_get_clientdata(client);
+
+        decoder->reg[reg] = value;
+        return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline int
+bt819_setbit (struct i2c_client *client,
+              u8                 reg,
+              u8                 bit,
+              u8                 value)
+{
+        struct bt819 *decoder = i2c_get_clientdata(client);
+
+        return bt819_write(client, reg,
+                           (decoder->
+                            reg[reg] & ~(1 << bit)) |
+                            (value ? (1 << bit) : 0));
+}
+
+static int
+bt819_write_block (struct i2c_client *client,
+                   const u8          *data,
+                   unsigned int       len)
+{
+        int ret = -1;
+        u8 reg;
+
+        /* the bt819 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 */
+                struct bt819 *decoder = i2c_get_clientdata(client);
+                struct i2c_msg msg;
+                u8 block_data[32];
+
+                msg.addr = client->addr;
+                msg.flags = 0;
+                while (len >= 2) {
+                        msg.buf = (char *) block_data;
+                        msg.len = 0;
+                        block_data[msg.len++] = reg = data[0];
+                        do {
+                                block_data[msg.len++] =
+                                    decoder->reg[reg++] = data[1];
+                                len -= 2;
+                                data += 2;
+                        } while (len >= 2 && data[0] == reg &&
+                                 msg.len < 32);
+                        if ((ret = i2c_transfer(client->adapter,
+                                                &msg, 1)) < 0)
+                                break;
+                }
+        } else {
+                /* do some slow I2C emulation kind of thing */
+                while (len >= 2) {
+                        reg = *data++;
+                        if ((ret = bt819_write(client, reg, *data++)) < 0)
+                                break;
+                        len -= 2;
+                }
+        }
+
+        return ret;
+}
+
+static inline int
+bt819_read (struct i2c_client *client,
+            u8                 reg)
+{
+        return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int
+bt819_init (struct i2c_client *client)
+{
+        struct bt819 *decoder = i2c_get_clientdata(client);
+
+        static unsigned char init[] = {
+                //0x1f, 0x00,     /* Reset */
+                0x01, 0x59,     /* 0x01 input format */
+                0x02, 0x00,     /* 0x02 temporal decimation */
+                0x03, 0x12,     /* 0x03 Cropping msb */
+                0x04, 0x16,     /* 0x04 Vertical Delay, lsb */
+                0x05, 0xe0,     /* 0x05 Vertical Active lsb */
+                0x06, 0x80,     /* 0x06 Horizontal Delay lsb */
+                0x07, 0xd0,     /* 0x07 Horizontal Active lsb */
+                0x08, 0x00,     /* 0x08 Horizontal Scaling msb */
+                0x09, 0xf8,     /* 0x09 Horizontal Scaling lsb */
+                0x0a, 0x00,     /* 0x0a Brightness control */
+                0x0b, 0x30,     /* 0x0b Miscellaneous control */
+                0x0c, 0xd8,     /* 0x0c Luma Gain lsb */
+                0x0d, 0xfe,     /* 0x0d Chroma Gain (U) lsb */
+                0x0e, 0xb4,     /* 0x0e Chroma Gain (V) msb */
+                0x0f, 0x00,     /* 0x0f Hue control */
+                0x12, 0x04,     /* 0x12 Output Format */
+                0x13, 0x20,     /* 0x13 Vertial Scaling msb 0x00
+                                           chroma comb OFF, line drop scaling, interlace scaling
+                                           BUG? Why does turning the chroma comb on fuck up color?
+                                           Bug in the bt819 stepping on my board?
+                                        */
+                0x14, 0x00,     /* 0x14 Vertial Scaling lsb */
+                0x16, 0x07,     /* 0x16 Video Timing Polarity 
+                                           ACTIVE=active low
+                                           FIELD: high=odd, 
+                                           vreset=active high,
+                                           hreset=active high */
+                0x18, 0x68,     /* 0x18 AGC Delay */
+                0x19, 0x5d,     /* 0x19 Burst Gate Delay */
+                0x1a, 0x80,     /* 0x1a ADC Interface */
+        };
+
+        struct timing *timing = &timing_data[decoder->norm];
+
+        init[0x03 * 2 - 1] =
+            (((timing->vdelay >> 8) & 0x03) << 6) | (((timing->
+                                                       vactive >> 8) &
+                                                      0x03) << 4) |
+            (((timing->hdelay >> 8) & 0x03) << 2) | ((timing->
+                                                      hactive >> 8) &
+                                                     0x03);
+        init[0x04 * 2 - 1] = timing->vdelay & 0xff;
+        init[0x05 * 2 - 1] = timing->vactive & 0xff;
+        init[0x06 * 2 - 1] = timing->hdelay & 0xff;
+        init[0x07 * 2 - 1] = timing->hactive & 0xff;
+        init[0x08 * 2 - 1] = timing->hscale >> 8;
+        init[0x09 * 2 - 1] = timing->hscale & 0xff;
+        /* 0x15 in array is address 0x19 */
+        init[0x15 * 2 - 1] = (decoder->norm == 0) ? 115 : 93;   /* Chroma burst delay */
+        /* reset */
+        bt819_write(client, 0x1f, 0x00);
+        mdelay(1);
+
+        /* init */
+        return bt819_write_block(client, init, sizeof(init));
+
+}
+
+/* ----------------------------------------------------------------------- */
+
+static int
+bt819_command (struct i2c_client *client,
+               unsigned int       cmd,
+               void              *arg)
+{
+        int temp;
+
+        struct bt819 *decoder = i2c_get_clientdata(client);
+
+        if (!decoder->initialized) {    // First call to bt819_init could be
+                bt819_init(client);     // without #FRST = 0
+                decoder->initialized = 1;
+        }
+
+        switch (cmd) {
+
+        case 0:
+                /* This is just for testing!!! */
+                bt819_init(client);
+                break;
+
+        case DECODER_GET_CAPABILITIES:
+        {
+                struct video_decoder_capability *cap = arg;
+
+                cap->flags = VIDEO_DECODER_PAL |
+                             VIDEO_DECODER_NTSC |
+                             VIDEO_DECODER_AUTO |
+                             VIDEO_DECODER_CCIR;
+                cap->inputs = 8;
+                cap->outputs = 1;
+        }
+                break;
+
+        case DECODER_GET_STATUS:
+        {
+                int *iarg = arg;
+                int status;
+                int res;
+
+                status = bt819_read(client, 0x00);
+                res = 0;
+                if ((status & 0x80)) {
+                        res |= DECODER_STATUS_GOOD;
+                }
+                switch (decoder->norm) {
+                case VIDEO_MODE_NTSC:
+                        res |= DECODER_STATUS_NTSC;
+                        break;
+                case VIDEO_MODE_PAL:
+                        res |= DECODER_STATUS_PAL;
+                        break;
+                default:
+                case VIDEO_MODE_AUTO:
+                        if ((status & 0x10)) {
+                                res |= DECODER_STATUS_PAL;
+                        } else {
+                                res |= DECODER_STATUS_NTSC;
+                        }
+                        break;
+                }
+                res |= DECODER_STATUS_COLOR;
+                *iarg = res;
+
+                dprintk(1, KERN_INFO "%s: get status %x\n", I2C_NAME(client),
+                        *iarg);
+        }
+                break;
+
+        case DECODER_SET_NORM:
+        {
+                int *iarg = arg;
+                struct timing *timing = NULL;
+
+                dprintk(1, KERN_INFO "%s: set norm %x\n", I2C_NAME(client),
+                        *iarg);
+
+                switch (*iarg) {
+                case VIDEO_MODE_NTSC:
+                        bt819_setbit(client, 0x01, 0, 1);
+                        bt819_setbit(client, 0x01, 1, 0);
+                        bt819_setbit(client, 0x01, 5, 0);
+                        bt819_write(client, 0x18, 0x68);
+                        bt819_write(client, 0x19, 0x5d);
+                        //bt819_setbit(client, 0x1a,  5, 1);
+                        timing = &timing_data[VIDEO_MODE_NTSC];
+                        break;
+                case VIDEO_MODE_PAL:
+                        bt819_setbit(client, 0x01, 0, 1);
+                        bt819_setbit(client, 0x01, 1, 1);
+                        bt819_setbit(client, 0x01, 5, 1);
+                        bt819_write(client, 0x18, 0x7f);
+                        bt819_write(client, 0x19, 0x72);
+                        //bt819_setbit(client, 0x1a,  5, 0);
+                        timing = &timing_data[VIDEO_MODE_PAL];
+                        break;
+                case VIDEO_MODE_AUTO:
+                        bt819_setbit(client, 0x01, 0, 0);
+                        bt819_setbit(client, 0x01, 1, 0);
+                        break;
+                default:
+                        dprintk(1,
+                                KERN_ERR
+                                "%s: unsupported norm %d\n",
+                                I2C_NAME(client), *iarg);
+                        return -EINVAL;
+                }
+
+                if (timing) {
+                        bt819_write(client, 0x03,
+                                    (((timing->vdelay >> 8) & 0x03) << 6) |
+                                    (((timing->vactive >> 8) & 0x03) << 4) |
+                                    (((timing->hdelay >> 8) & 0x03) << 2) |
+                                     ((timing->hactive >> 8) & 0x03) );
+                        bt819_write(client, 0x04, timing->vdelay & 0xff);
+                        bt819_write(client, 0x05, timing->vactive & 0xff);
+                        bt819_write(client, 0x06, timing->hdelay & 0xff);
+                        bt819_write(client, 0x07, timing->hactive & 0xff);
+                        bt819_write(client, 0x08, (timing->hscale >> 8) & 0xff);
+                        bt819_write(client, 0x09, timing->hscale & 0xff);
+                }
+
+                decoder->norm = *iarg;
+        }
+                break;
+
+        case DECODER_SET_INPUT:
+        {
+                int *iarg = arg;
+
+                dprintk(1, KERN_INFO "%s: set input %x\n", I2C_NAME(client),
+                        *iarg);
+
+                if (*iarg < 0 || *iarg > 7) {
+                        return -EINVAL;
+                }
+
+                if (decoder->input != *iarg) {
+                        decoder->input = *iarg;
+                        /* select mode */
+                        if (decoder->input == 0) {
+                                bt819_setbit(client, 0x0b, 6, 0);
+                                bt819_setbit(client, 0x1a, 1, 1);
+                        } else {
+                                bt819_setbit(client, 0x0b, 6, 1);
+                                bt819_setbit(client, 0x1a, 1, 0);
+                        }
+                }
+        }
+                break;
+
+        case DECODER_SET_OUTPUT:
+        {
+                int *iarg = arg;
+
+                dprintk(1, KERN_INFO "%s: set output %x\n", I2C_NAME(client),
+                        *iarg);
+
+                /* not much choice of outputs */
+                if (*iarg != 0) {
+                        return -EINVAL;
+                }
+        }
+                break;
+
+        case DECODER_ENABLE_OUTPUT:
+        {
+                int *iarg = arg;
+                int enable = (*iarg != 0);
+
+                dprintk(1, KERN_INFO "%s: enable output %x\n",
+                        I2C_NAME(client), *iarg);
+
+                if (decoder->enable != enable) {
+                        decoder->enable = enable;
+
+                        if (decoder->enable) {
+                                bt819_setbit(client, 0x16, 7, 0);
+                        } else {
+                                bt819_setbit(client, 0x16, 7, 1);
+                        }
+                }
+        }
+                break;
+
+        case DECODER_SET_PICTURE:
+        {
+                struct video_picture *pic = arg;
+
+                dprintk(1,
+                        KERN_INFO
+                        "%s: set picture brightness %d contrast %d colour %d\n",
+                        I2C_NAME(client), pic->brightness, pic->contrast,
+                        pic->colour);
+
+
+                if (decoder->bright != pic->brightness) {
+                        /* We want -128 to 127 we get 0-65535 */
+                        decoder->bright = pic->brightness;
+                        bt819_write(client, 0x0a,
+                                    (decoder->bright >> 8) - 128);
+                }
+
+                if (decoder->contrast != pic->contrast) {
+                        /* We want 0 to 511 we get 0-65535 */
+                        decoder->contrast = pic->contrast;
+                        bt819_write(client, 0x0c,
+                                    (decoder->contrast >> 7) & 0xff);
+                        bt819_setbit(client, 0x0b, 2,
+                                     ((decoder->contrast >> 15) & 0x01));
+                }
+
+                if (decoder->sat != pic->colour) {
+                        /* We want 0 to 511 we get 0-65535 */
+                        decoder->sat = pic->colour;
+                        bt819_write(client, 0x0d,
+                                    (decoder->sat >> 7) & 0xff);
+                        bt819_setbit(client, 0x0b, 1,
+                                     ((decoder->sat >> 15) & 0x01));
+
+                        temp = (decoder->sat * 201) / 237;
+                        bt819_write(client, 0x0e, (temp >> 7) & 0xff);
+                        bt819_setbit(client, 0x0b, 0, (temp >> 15) & 0x01);
+                }
+
+                if (decoder->hue != pic->hue) {
+                        /* We want -128 to 127 we get 0-65535 */
+                        decoder->hue = pic->hue;
+                        bt819_write(client, 0x0f,
+                                    128 - (decoder->hue >> 8));
+                }
+        }
+                break;
+
+        default:
+                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_BT819 >> 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_bt819;
+
+static int
+bt819_detect_client (struct i2c_adapter *adapter,
+                     int                 address,
+                     int                 kind)
+{
+        int i, id;
+        struct bt819 *decoder;
+        struct i2c_client *client;
+
+        dprintk(1,
+                KERN_INFO
+                "saa7111.c: detecting bt819 client on address 0x%x\n",
+                address << 1);
+
+        /* Check if the adapter supports the needed features */
+        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_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_bt819;
+        client->flags = I2C_CLIENT_ALLOW_USE;
+
+        decoder = kmalloc(sizeof(struct bt819), GFP_KERNEL);
+        if (decoder == NULL) {
+                kfree(client);
+                return -ENOMEM;
+        }
+
+        memset(decoder, 0, sizeof(struct bt819));
+        decoder->norm = VIDEO_MODE_NTSC;
+        decoder->input = 0;
+        decoder->enable = 1;
+        decoder->bright = 32768;
+        decoder->contrast = 32768;
+        decoder->hue = 32768;
+        decoder->sat = 32768;
+        decoder->initialized = 0;
+        i2c_set_clientdata(client, decoder);
+
+        id = bt819_read(client, 0x17);
+        switch (id & 0xf0) {
+        case 0x70:
+                strlcpy(I2C_NAME(client), "bt819a", sizeof(I2C_NAME(client)));
+                break;
+        case 0x60:
+                strlcpy(I2C_NAME(client), "bt817a", sizeof(I2C_NAME(client)));
+                break;
+        case 0x20:
+                strlcpy(I2C_NAME(client), "bt815a", sizeof(I2C_NAME(client)));
+                break;
+        default:
+                dprintk(1,
+                        KERN_ERR
+                        "bt819: unknown chip version 0x%x (ver 0x%x)\n",
+                        id & 0xf0, id & 0x0f);
+                kfree(decoder);
+                kfree(client);
+                return 0;
+        }
+
+        i = i2c_attach_client(client);
+        if (i) {
+                kfree(client);
+                kfree(decoder);
+                return i;
+        }
+
+        i = bt819_init(client);
+        if (i < 0) {
+                dprintk(1, KERN_ERR "%s_attach: init status %d\n",
+                        I2C_NAME(client), i);
+        } else {
+                dprintk(1,
+                        KERN_INFO
+                        "%s_attach: chip version 0x%x at address 0x%x\n",
+                        I2C_NAME(client), id & 0x0f,
+                        client->addr << 1);
+        }
+
+        return 0;
+}
+
+static int
+bt819_attach_adapter (struct i2c_adapter *adapter)
+{
+        return i2c_probe(adapter, &addr_data, &bt819_detect_client);
+}
+
+static int
+bt819_detach_client (struct i2c_client *client)
+{
+        struct bt819 *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_bt819 = {
+        .owner = THIS_MODULE,
+        .name = "bt819",
+
+        .id = I2C_DRIVERID_BT819,
+        .flags = I2C_DF_NOTIFY,
+
+        .attach_adapter = bt819_attach_adapter,
+        .detach_client = bt819_detach_client,
+        .command = bt819_command,
+};
+
+static int __init
+bt819_init_module (void)
+{
+        return i2c_add_driver(&i2c_driver_bt819);
+}
+
+static void __exit
+bt819_exit (void)
+{
+        i2c_del_driver(&i2c_driver_bt819);
+}
+
+module_init(bt819_init_module);
+module_exit(bt819_exit);