1 files changed, 535 insertions, 0 deletions

diff --git a/drivers/media/video/adv7170.c b/drivers/media/video/adv7170.c
new file mode 100644
index 000000000000..80254caa444c
--- /dev/null
+++ b/drivers/media/video/adv7170.c
@@ -0,0 +1,535 @@
+/* 
+ * 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/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 ADV7170 video encoder driver");
+MODULE_AUTHOR("Maxim Yevtyushkin");
+MODULE_LICENSE("GPL");
+
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+
+#define I2C_NAME(x) (x)->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 adv7170 {
+        unsigned char reg[128];
+
+        int norm;
+        int input;
+        int enable;
+        int bright;
+        int contrast;
+        int hue;
+        int sat;
+};
+
+#define   I2C_ADV7170        0xd4
+#define   I2C_ADV7171        0x54
+
+static char adv7170_name[] = "adv7170";
+static char adv7171_name[] = "adv7171";
+
+static char *inputs[] = { "pass_through", "play_back" };
+static char *norms[] = { "PAL", "NTSC" };
+
+/* ----------------------------------------------------------------------- */
+
+static inline int
+adv7170_write (struct i2c_client *client,
+               u8                 reg,
+               u8                 value)
+{
+        struct adv7170 *encoder = i2c_get_clientdata(client);
+
+        encoder->reg[reg] = value;
+        return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline int
+adv7170_read (struct i2c_client *client,
+              u8                 reg)
+{
+        return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int
+adv7170_write_block (struct i2c_client *client,
+                     const u8          *data,
+                     unsigned int       len)
+{
+        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 */
+                struct adv7170 *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 = adv7170_write(client, reg,
+                                                 *data++)) < 0)
+                                break;
+                        len -= 2;
+                }
+        }
+
+        return ret;
+}
+
+/* ----------------------------------------------------------------------- */
+// Output filter:  S-Video  Composite
+
+#define MR050       0x11        //0x09
+#define MR060       0x14        //0x0c
+
+//---------------------------------------------------------------------------
+
+#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_command (struct i2c_client *client,
+                 unsigned int       cmd,
+                 void *             arg)
+{
+        struct adv7170 *encoder = i2c_get_clientdata(client);
+
+        switch (cmd) {
+
+        case 0:
+#if 0
+                /* This is just for testing!!! */
+                adv7170_write_block(client, init_common,
+                                    sizeof(init_common));
+                adv7170_write(client, 0x07, TR0MODE | TR0RST);
+                adv7170_write(client, 0x07, TR0MODE);
+#endif
+                break;
+
+        case ENCODER_GET_CAPABILITIES:
+        {
+                struct video_encoder_capability *cap = arg;
+
+                cap->flags = VIDEO_ENCODER_PAL |
+                             VIDEO_ENCODER_NTSC;
+                cap->inputs = 2;
+                cap->outputs = 1;
+        }
+                break;
+
+        case ENCODER_SET_NORM:
+        {
+                int iarg = *(int *) arg;
+
+                dprintk(1, KERN_DEBUG "%s_command: set norm %d",
+                        I2C_NAME(client), iarg);
+
+                switch (iarg) {
+
+                case VIDEO_MODE_NTSC:
+                        adv7170_write_block(client, init_NTSC,
+                                            sizeof(init_NTSC));
+                        if (encoder->input == 0)
+                                adv7170_write(client, 0x02, 0x0e);      // Enable genlock
+                        adv7170_write(client, 0x07, TR0MODE | TR0RST);
+                        adv7170_write(client, 0x07, TR0MODE);
+                        break;
+
+                case VIDEO_MODE_PAL:
+                        adv7170_write_block(client, init_PAL,
+                                            sizeof(init_PAL));
+                        if (encoder->input == 0)
+                                adv7170_write(client, 0x02, 0x0e);      // Enable genlock
+                        adv7170_write(client, 0x07, TR0MODE | TR0RST);
+                        adv7170_write(client, 0x07, TR0MODE);
+                        break;
+
+                default:
+                        dprintk(1, KERN_ERR "%s: illegal norm: %d\n",
+                               I2C_NAME(client), iarg);
+                        return -EINVAL;
+
+                }
+                dprintk(1, KERN_DEBUG "%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 decoder
+                 *iarg = 1: input is from ZR36060
+                 *iarg = 2: color bar */
+
+                dprintk(1, KERN_DEBUG "%s_command: set input from %s\n",
+                        I2C_NAME(client),
+                        iarg == 0 ? "decoder" : "ZR36060");
+
+                switch (iarg) {
+
+                case 0:
+                        adv7170_write(client, 0x01, 0x20);
+                        adv7170_write(client, 0x08, TR1CAPT);   /* TR1 */
+                        adv7170_write(client, 0x02, 0x0e);      // Enable genlock
+                        adv7170_write(client, 0x07, TR0MODE | TR0RST);
+                        adv7170_write(client, 0x07, TR0MODE);
+                        //udelay(10);
+                        break;
+
+                case 1:
+                        adv7170_write(client, 0x01, 0x00);
+                        adv7170_write(client, 0x08, TR1PLAY);   /* TR1 */
+                        adv7170_write(client, 0x02, 0x08);
+                        adv7170_write(client, 0x07, TR0MODE | TR0RST);
+                        adv7170_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_DEBUG "%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;
+
+        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_ADV7170 >> 1, (I2C_ADV7170 >> 1) + 1,
+        I2C_ADV7171 >> 1, (I2C_ADV7171 >> 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_adv7170;
+
+static int
+adv7170_detect_client (struct i2c_adapter *adapter,
+                       int                 address,
+                       int                 kind)
+{
+        int i;
+        struct i2c_client *client;
+        struct adv7170 *encoder;
+        char *dname;
+
+        dprintk(1,
+                KERN_INFO
+                "adv7170.c: detecting adv7170 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_adv7170;
+        client->flags = I2C_CLIENT_ALLOW_USE;
+        if ((client->addr == I2C_ADV7170 >> 1) ||
+            (client->addr == (I2C_ADV7170 >> 1) + 1)) {
+                dname = adv7170_name;
+        } else if ((client->addr == I2C_ADV7171 >> 1) ||
+                   (client->addr == (I2C_ADV7171 >> 1) + 1)) {
+                dname = adv7171_name;
+        } else {
+                /* We should never get here!!! */
+                kfree(client);
+                return 0;
+        }
+        strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client)));
+
+        encoder = kmalloc(sizeof(struct adv7170), GFP_KERNEL);
+        if (encoder == NULL) {
+                kfree(client);
+                return -ENOMEM;
+        }
+        memset(encoder, 0, sizeof(struct adv7170));
+        encoder->norm = VIDEO_MODE_NTSC;
+        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 = adv7170_write_block(client, init_NTSC, sizeof(init_NTSC));
+        if (i >= 0) {
+                i = adv7170_write(client, 0x07, TR0MODE | TR0RST);
+                i = adv7170_write(client, 0x07, TR0MODE);
+                i = adv7170_read(client, 0x12);
+                dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%02x\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
+adv7170_attach_adapter (struct i2c_adapter *adapter)
+{
+        dprintk(1,
+                KERN_INFO
+                "adv7170.c: starting probe for adapter %s (0x%x)\n",
+                I2C_NAME(adapter), adapter->id);
+        return i2c_probe(adapter, &addr_data, &adv7170_detect_client);
+}
+
+static int
+adv7170_detach_client (struct i2c_client *client)
+{
+        struct adv7170 *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_adv7170 = {
+        .owner = THIS_MODULE,
+        .name = "adv7170",      /* name */
+
+        .id = I2C_DRIVERID_ADV7170,
+        .flags = I2C_DF_NOTIFY,
+
+        .attach_adapter = adv7170_attach_adapter,
+        .detach_client = adv7170_detach_client,
+        .command = adv7170_command,
+};
+
+static int __init
+adv7170_init (void)
+{
+        return i2c_add_driver(&i2c_driver_adv7170);
+}
+
+static void __exit
+adv7170_exit (void)
+{
+        i2c_del_driver(&i2c_driver_adv7170);
+}
+
+module_init(adv7170_init);
+module_exit(adv7170_exit);