1 files changed, 585 insertions, 0 deletions

diff --git a/drivers/media/video/adv7175.c b/drivers/media/video/adv7175.c
new file mode 100644
index 000000000000..95d0974b0ab5
--- /dev/null
+++ b/drivers/media/video/adv7175.c
@@ -0,0 +1,585 @@
+/* 
+ *  adv7175 - adv7175a video encoder driver version 0.0.3
+ *
+ * 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 (9/9/2002)
+ *
+ * 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("Analog Devices ADV7175 video encoder driver");
+MODULE_AUTHOR("Dave Perks");
+MODULE_LICENSE("GPL");
+
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+
+#define I2C_NAME(s) (s)->name
+
+#include <linux/video_encoder.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 adv7175 {
+        unsigned char reg[128];
+
+        int norm;
+        int input;
+        int enable;
+        int bright;
+        int contrast;
+        int hue;
+        int sat;
+};
+
+#define   I2C_ADV7175        0xd4
+#define   I2C_ADV7176        0x54
+
+static char adv7175_name[] = "adv7175";
+static char adv7176_name[] = "adv7176";
+
+static char *inputs[] = { "pass_through", "play_back", "color_bar" };
+static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" };
+
+/* ----------------------------------------------------------------------- */
+
+static inline int
+adv7175_write (struct i2c_client *client,
+               u8                 reg,
+               u8                 value)
+{
+        struct adv7175 *encoder = i2c_get_clientdata(client);
+
+        encoder->reg[reg] = value;
+        return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline int
+adv7175_read (struct i2c_client *client,
+              u8                 reg)
+{
+        return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int
+adv7175_write_block (struct i2c_client *client,
+                     const u8          *data,
+                     unsigned int       len)
+{
+        int ret = -1;
+        u8 reg;
+
+        /* the adv7175 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 adv7175 *encoder = 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++] =
+                                    encoder->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 = adv7175_write(client, reg,
+                                                 *data++)) < 0)
+                                break;
+                        len -= 2;
+                }
+        }
+
+        return ret;
+}
+
+static void
+set_subcarrier_freq (struct i2c_client *client,
+                     int                pass_through)
+{
+        /* for some reason pass_through NTSC needs
+         * a different sub-carrier freq to remain stable. */
+        if(pass_through)
+                adv7175_write(client, 0x02, 0x00);
+        else
+                adv7175_write(client, 0x02, 0x55);
+
+        adv7175_write(client, 0x03, 0x55);
+        adv7175_write(client, 0x04, 0x55);
+        adv7175_write(client, 0x05, 0x25);
+}
+
+#ifdef ENCODER_DUMP
+static void
+dump (struct i2c_client *client)
+{
+        struct adv7175 *encoder = i2c_get_clientdata(client);
+        int i, j;
+
+        printk(KERN_INFO "%s: registry dump\n", I2C_NAME(client));
+        for (i = 0; i < 182 / 8; i++) {
+                printk("%s: 0x%02x -", I2C_NAME(client), i * 8);
+                for (j = 0; j < 8; j++) {
+                        printk(" 0x%02x", encoder->reg[i * 8 + j]);
+                }
+                printk("\n");
+        }
+}
+#endif
+
+/* ----------------------------------------------------------------------- */
+// Output filter:  S-Video  Composite
+
+#define MR050       0x11        //0x09
+#define MR060       0x14        //0x0c
+
+//---------------------------------------------------------------------------
+
+#define TR0MODE     0x46
+#define TR0RST      0x80
+
+#define TR1CAPT     0x80
+#define TR1PLAY     0x00
+
+static const unsigned char init_common[] = {
+
+        0x00, MR050,            /* MR0, PAL enabled */
+        0x01, 0x00,             /* MR1 */
+        0x02, 0x0c,             /* subc. freq. */
+        0x03, 0x8c,             /* subc. freq. */
+        0x04, 0x79,             /* subc. freq. */
+        0x05, 0x26,             /* subc. freq. */
+        0x06, 0x40,             /* subc. phase */
+
+        0x07, TR0MODE,          /* TR0, 16bit */
+        0x08, 0x21,             /*  */
+        0x09, 0x00,             /*  */
+        0x0a, 0x00,             /*  */
+        0x0b, 0x00,             /*  */
+        0x0c, TR1CAPT,          /* TR1 */
+        0x0d, 0x4f,             /* MR2 */
+        0x0e, 0x00,             /*  */
+        0x0f, 0x00,             /*  */
+        0x10, 0x00,             /*  */
+        0x11, 0x00,             /*  */
+};
+
+static const unsigned char init_pal[] = {
+        0x00, MR050,            /* MR0, PAL enabled */
+        0x01, 0x00,             /* MR1 */
+        0x02, 0x0c,             /* subc. freq. */
+        0x03, 0x8c,             /* subc. freq. */
+        0x04, 0x79,             /* subc. freq. */
+        0x05, 0x26,             /* subc. freq. */
+        0x06, 0x40,             /* subc. phase */
+};
+
+static const unsigned char init_ntsc[] = {
+        0x00, MR060,            /* MR0, NTSC enabled */
+        0x01, 0x00,             /* MR1 */
+        0x02, 0x55,             /* subc. freq. */
+        0x03, 0x55,             /* subc. freq. */
+        0x04, 0x55,             /* subc. freq. */
+        0x05, 0x25,             /* subc. freq. */
+        0x06, 0x1a,             /* subc. phase */
+};
+
+static int
+adv7175_command (struct i2c_client *client,
+                 unsigned int       cmd,
+                 void              *arg)
+{
+        struct adv7175 *encoder = i2c_get_clientdata(client);
+
+        switch (cmd) {
+
+        case 0:
+                /* This is just for testing!!! */
+                adv7175_write_block(client, init_common,
+                                    sizeof(init_common));
+                adv7175_write(client, 0x07, TR0MODE | TR0RST);
+                adv7175_write(client, 0x07, TR0MODE);
+                break;
+
+        case ENCODER_GET_CAPABILITIES:
+        {
+                struct video_encoder_capability *cap = arg;
+
+                cap->flags = VIDEO_ENCODER_PAL |
+                             VIDEO_ENCODER_NTSC |
+                             VIDEO_ENCODER_SECAM; /* well, hacky */
+                cap->inputs = 2;
+                cap->outputs = 1;
+        }
+                break;
+
+        case ENCODER_SET_NORM:
+        {
+                int iarg = *(int *) arg;
+
+                switch (iarg) {
+
+                case VIDEO_MODE_NTSC:
+                        adv7175_write_block(client, init_ntsc,
+                                            sizeof(init_ntsc));
+                        if (encoder->input == 0)
+                                adv7175_write(client, 0x0d, 0x4f);      // Enable genlock
+                        adv7175_write(client, 0x07, TR0MODE | TR0RST);
+                        adv7175_write(client, 0x07, TR0MODE);
+                        break;
+
+                case VIDEO_MODE_PAL:
+                        adv7175_write_block(client, init_pal,
+                                            sizeof(init_pal));
+                        if (encoder->input == 0)
+                                adv7175_write(client, 0x0d, 0x4f);      // Enable genlock
+                        adv7175_write(client, 0x07, TR0MODE | TR0RST);
+                        adv7175_write(client, 0x07, TR0MODE);
+                        break;
+
+                case VIDEO_MODE_SECAM:  // WARNING! ADV7176 does not support SECAM.
+                        /* This is an attempt to convert
+                         * SECAM->PAL (typically it does not work
+                         * due to genlock: when decoder is in SECAM
+                         * and encoder in in PAL the subcarrier can
+                         * not be syncronized with horizontal
+                         * quency) */
+                        adv7175_write_block(client, init_pal,
+                                            sizeof(init_pal));
+                        if (encoder->input == 0)
+                                adv7175_write(client, 0x0d, 0x49);      // Disable genlock
+                        adv7175_write(client, 0x07, TR0MODE | TR0RST);
+                        adv7175_write(client, 0x07, TR0MODE);
+                        break;
+                default:
+                        dprintk(1, KERN_ERR "%s: illegal norm: %d\n",
+                                I2C_NAME(client), iarg);
+                        return -EINVAL;
+
+                }
+                dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),
+                        norms[iarg]);
+                encoder->norm = iarg;
+        }
+                break;
+
+        case ENCODER_SET_INPUT:
+        {
+                int iarg = *(int *) arg;
+
+                /* RJ: *iarg = 0: input is from SAA7110
+                 *iarg = 1: input is from ZR36060
+                 *iarg = 2: color bar */
+
+                switch (iarg) {
+
+                case 0:
+                        adv7175_write(client, 0x01, 0x00);
+
+                        if (encoder->norm == VIDEO_MODE_NTSC)
+                                set_subcarrier_freq(client, 1);
+
+                        adv7175_write(client, 0x0c, TR1CAPT);   /* TR1 */
+                        if (encoder->norm == VIDEO_MODE_SECAM)
+                                adv7175_write(client, 0x0d, 0x49);      // Disable genlock
+                        else
+                                adv7175_write(client, 0x0d, 0x4f);      // Enable genlock
+                        adv7175_write(client, 0x07, TR0MODE | TR0RST);
+                        adv7175_write(client, 0x07, TR0MODE);
+                        //udelay(10);
+                        break;
+
+                case 1:
+                        adv7175_write(client, 0x01, 0x00);
+
+                        if (encoder->norm == VIDEO_MODE_NTSC)
+                                set_subcarrier_freq(client, 0);
+
+                        adv7175_write(client, 0x0c, TR1PLAY);   /* TR1 */
+                        adv7175_write(client, 0x0d, 0x49);
+                        adv7175_write(client, 0x07, TR0MODE | TR0RST);
+                        adv7175_write(client, 0x07, TR0MODE);
+                        //udelay(10);
+                        break;
+
+                case 2:
+                        adv7175_write(client, 0x01, 0x80);
+
+                        if (encoder->norm == VIDEO_MODE_NTSC)
+                                set_subcarrier_freq(client, 0);
+
+                        adv7175_write(client, 0x0d, 0x49);
+                        adv7175_write(client, 0x07, TR0MODE | TR0RST);
+                        adv7175_write(client, 0x07, TR0MODE);
+                        //udelay(10);
+                        break;
+
+                default:
+                        dprintk(1, KERN_ERR "%s: illegal input: %d\n",
+                                I2C_NAME(client), iarg);
+                        return -EINVAL;
+
+                }
+                dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),
+                        inputs[iarg]);
+                encoder->input = iarg;
+        }
+                break;
+
+        case ENCODER_SET_OUTPUT:
+        {
+                int *iarg = arg;
+
+                /* not much choice of outputs */
+                if (*iarg != 0) {
+                        return -EINVAL;
+                }
+        }
+                break;
+
+        case ENCODER_ENABLE_OUTPUT:
+        {
+                int *iarg = arg;
+
+                encoder->enable = !!*iarg;
+        }
+                break;
+
+#ifdef ENCODER_DUMP
+        case ENCODER_DUMP:
+        {
+                dump(client);
+        }
+                break;
+#endif
+
+        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_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,
+        I2C_ADV7176 >> 1, (I2C_ADV7176 >> 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_adv7175;
+
+static int
+adv7175_detect_client (struct i2c_adapter *adapter,
+                       int                 address,
+                       int                 kind)
+{
+        int i;
+        struct i2c_client *client;
+        struct adv7175 *encoder;
+        char *dname;
+
+        dprintk(1,
+                KERN_INFO
+                "adv7175.c: detecting adv7175 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_adv7175;
+        client->flags = I2C_CLIENT_ALLOW_USE;
+        if ((client->addr == I2C_ADV7175 >> 1) ||
+            (client->addr == (I2C_ADV7175 >> 1) + 1)) {
+                dname = adv7175_name;
+        } else if ((client->addr == I2C_ADV7176 >> 1) ||
+                   (client->addr == (I2C_ADV7176 >> 1) + 1)) {
+                dname = adv7176_name;
+        } else {
+                /* We should never get here!!! */
+                kfree(client);
+                return 0;
+        }
+        strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client)));
+
+        encoder = kmalloc(sizeof(struct adv7175), GFP_KERNEL);
+        if (encoder == NULL) {
+                kfree(client);
+                return -ENOMEM;
+        }
+        memset(encoder, 0, sizeof(struct adv7175));
+        encoder->norm = VIDEO_MODE_PAL;
+        encoder->input = 0;
+        encoder->enable = 1;
+        i2c_set_clientdata(client, encoder);
+
+        i = i2c_attach_client(client);
+        if (i) {
+                kfree(client);
+                kfree(encoder);
+                return i;
+        }
+
+        i = adv7175_write_block(client, init_common, sizeof(init_common));
+        if (i >= 0) {
+                i = adv7175_write(client, 0x07, TR0MODE | TR0RST);
+                i = adv7175_write(client, 0x07, TR0MODE);
+                i = adv7175_read(client, 0x12);
+                dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\n",
+                        I2C_NAME(client), i & 1, client->addr << 1);
+        }
+        if (i < 0) {
+                dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n",
+                        I2C_NAME(client), i);
+        }
+
+        return 0;
+}
+
+static int
+adv7175_attach_adapter (struct i2c_adapter *adapter)
+{
+        dprintk(1,
+                KERN_INFO
+                "adv7175.c: starting probe for adapter %s (0x%x)\n",
+                I2C_NAME(adapter), adapter->id);
+        return i2c_probe(adapter, &addr_data, &adv7175_detect_client);
+}
+
+static int
+adv7175_detach_client (struct i2c_client *client)
+{
+        struct adv7175 *encoder = i2c_get_clientdata(client);
+        int err;
+
+        err = i2c_detach_client(client);
+        if (err) {
+                return err;
+        }
+
+        kfree(encoder);
+        kfree(client);
+
+        return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static struct i2c_driver i2c_driver_adv7175 = {
+        .owner = THIS_MODULE,
+        .name = "adv7175",      /* name */
+
+        .id = I2C_DRIVERID_ADV7175,
+        .flags = I2C_DF_NOTIFY,
+
+        .attach_adapter = adv7175_attach_adapter,
+        .detach_client = adv7175_detach_client,
+        .command = adv7175_command,
+};
+
+static int __init
+adv7175_init (void)
+{
+        return i2c_add_driver(&i2c_driver_adv7175);
+}
+
+static void __exit
+adv7175_exit (void)
+{
+        i2c_del_driver(&i2c_driver_adv7175);
+}
+
+module_init(adv7175_init);
+module_exit(adv7175_exit);