1 files changed, 524 insertions, 0 deletions

diff --git a/drivers/media/video/saa7185.c b/drivers/media/video/saa7185.c
new file mode 100644
index 000000000000..5f0b224c3cb6
--- /dev/null
+++ b/drivers/media/video/saa7185.c
@@ -0,0 +1,524 @@
+/* 
+ * saa7185 - Philips SAA7185B video encoder driver version 0.0.3
+ *
+ * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
+ *
+ * Slight changes for video timing and attachment output by
+ * Wolfgang Scherr <scherr@net4you.net>
+ *
+ * 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("Philips SAA7185 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 saa7185 {
+        unsigned char reg[128];
+
+        int norm;
+        int enable;
+        int bright;
+        int contrast;
+        int hue;
+        int sat;
+};
+
+#define   I2C_SAA7185        0x88
+
+/* ----------------------------------------------------------------------- */
+
+static inline int
+saa7185_read (struct i2c_client *client)
+{
+        return i2c_smbus_read_byte(client);
+}
+
+static int
+saa7185_write (struct i2c_client *client,
+               u8                 reg,
+               u8                 value)
+{
+        struct saa7185 *encoder = i2c_get_clientdata(client);
+
+        dprintk(1, KERN_DEBUG "SAA7185: %02x set to %02x\n", reg, value);
+        encoder->reg[reg] = value;
+        return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static int
+saa7185_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 saa7185 *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 = saa7185_write(client, reg,
+                                                 *data++)) < 0)
+                                break;
+                        len -= 2;
+                }
+        }
+
+        return ret;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const unsigned char init_common[] = {
+        0x3a, 0x0f,             /* CBENB=0, V656=0, VY2C=1,
+                                 * YUV2C=1, MY2C=1, MUV2C=1 */
+
+        0x42, 0x6b,             /* OVLY0=107 */
+        0x43, 0x00,             /* OVLU0=0     white */
+        0x44, 0x00,             /* OVLV0=0   */
+        0x45, 0x22,             /* OVLY1=34  */
+        0x46, 0xac,             /* OVLU1=172   yellow */
+        0x47, 0x0e,             /* OVLV1=14  */
+        0x48, 0x03,             /* OVLY2=3   */
+        0x49, 0x1d,             /* OVLU2=29    cyan */
+        0x4a, 0xac,             /* OVLV2=172 */
+        0x4b, 0xf0,             /* OVLY3=240 */
+        0x4c, 0xc8,             /* OVLU3=200   green */
+        0x4d, 0xb9,             /* OVLV3=185 */
+        0x4e, 0xd4,             /* OVLY4=212 */
+        0x4f, 0x38,             /* OVLU4=56    magenta */
+        0x50, 0x47,             /* OVLV4=71  */
+        0x51, 0xc1,             /* OVLY5=193 */
+        0x52, 0xe3,             /* OVLU5=227   red */
+        0x53, 0x54,             /* OVLV5=84  */
+        0x54, 0xa3,             /* OVLY6=163 */
+        0x55, 0x54,             /* OVLU6=84    blue */
+        0x56, 0xf2,             /* OVLV6=242 */
+        0x57, 0x90,             /* OVLY7=144 */
+        0x58, 0x00,             /* OVLU7=0     black */
+        0x59, 0x00,             /* OVLV7=0   */
+
+        0x5a, 0x00,             /* CHPS=0    */
+        0x5b, 0x76,             /* GAINU=118 */
+        0x5c, 0xa5,             /* GAINV=165 */
+        0x5d, 0x3c,             /* BLCKL=60  */
+        0x5e, 0x3a,             /* BLNNL=58  */
+        0x5f, 0x3a,             /* CCRS=0, BLNVB=58 */
+        0x60, 0x00,             /* NULL      */
+
+        /* 0x61 - 0x66 set according to norm */
+
+        0x67, 0x00,             /* 0 : caption 1st byte odd  field */
+        0x68, 0x00,             /* 0 : caption 2nd byte odd  field */
+        0x69, 0x00,             /* 0 : caption 1st byte even field */
+        0x6a, 0x00,             /* 0 : caption 2nd byte even field */
+
+        0x6b, 0x91,             /* MODIN=2, PCREF=0, SCCLN=17 */
+        0x6c, 0x20,             /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
+                                 * CBLF=0, ORCV2=0, PRCV2=0 */
+        0x6d, 0x00,             /* SRCM1=0, CCEN=0 */
+
+        0x6e, 0x0e,             /* HTRIG=0x005, approx. centered, at
+                                 * least for PAL */
+        0x6f, 0x00,             /* HTRIG upper bits */
+        0x70, 0x20,             /* PHRES=0, SBLN=1, VTRIG=0 */
+
+        /* The following should not be needed */
+
+        0x71, 0x15,             /* BMRQ=0x115 */
+        0x72, 0x90,             /* EMRQ=0x690 */
+        0x73, 0x61,             /* EMRQ=0x690, BMRQ=0x115 */
+        0x74, 0x00,             /* NULL       */
+        0x75, 0x00,             /* NULL       */
+        0x76, 0x00,             /* NULL       */
+        0x77, 0x15,             /* BRCV=0x115 */
+        0x78, 0x90,             /* ERCV=0x690 */
+        0x79, 0x61,             /* ERCV=0x690, BRCV=0x115 */
+
+        /* Field length controls */
+
+        0x7a, 0x70,             /* FLC=0 */
+
+        /* The following should not be needed if SBLN = 1 */
+
+        0x7b, 0x16,             /* FAL=22 */
+        0x7c, 0x35,             /* LAL=244 */
+        0x7d, 0x20,             /* LAL=244, FAL=22 */
+};
+
+static const unsigned char init_pal[] = {
+        0x61, 0x1e,             /* FISE=0, PAL=1, SCBW=1, RTCE=1,
+                                 * YGS=1, INPI=0, DOWN=0 */
+        0x62, 0xc8,             /* DECTYP=1, BSTA=72 */
+        0x63, 0xcb,             /* FSC0 */
+        0x64, 0x8a,             /* FSC1 */
+        0x65, 0x09,             /* FSC2 */
+        0x66, 0x2a,             /* FSC3 */
+};
+
+static const unsigned char init_ntsc[] = {
+        0x61, 0x1d,             /* FISE=1, PAL=0, SCBW=1, RTCE=1,
+                                 * YGS=1, INPI=0, DOWN=0 */
+        0x62, 0xe6,             /* DECTYP=1, BSTA=102 */
+        0x63, 0x1f,             /* FSC0 */
+        0x64, 0x7c,             /* FSC1 */
+        0x65, 0xf0,             /* FSC2 */
+        0x66, 0x21,             /* FSC3 */
+};
+
+static int
+saa7185_command (struct i2c_client *client,
+                 unsigned int       cmd,
+                 void              *arg)
+{
+        struct saa7185 *encoder = i2c_get_clientdata(client);
+
+        switch (cmd) {
+
+        case 0:
+                saa7185_write_block(client, init_common,
+                                    sizeof(init_common));
+                switch (encoder->norm) {
+
+                case VIDEO_MODE_NTSC:
+                        saa7185_write_block(client, init_ntsc,
+                                            sizeof(init_ntsc));
+                        break;
+
+                case VIDEO_MODE_PAL:
+                        saa7185_write_block(client, init_pal,
+                                            sizeof(init_pal));
+                        break;
+                }
+
+                break;
+
+        case ENCODER_GET_CAPABILITIES:
+        {
+                struct video_encoder_capability *cap = arg;
+
+                cap->flags =
+                    VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC |
+                    VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR;
+                cap->inputs = 1;
+                cap->outputs = 1;
+        }
+                break;
+
+        case ENCODER_SET_NORM:
+        {
+                int *iarg = arg;
+
+                //saa7185_write_block(client, init_common, sizeof(init_common));
+
+                switch (*iarg) {
+
+                case VIDEO_MODE_NTSC:
+                        saa7185_write_block(client, init_ntsc,
+                                            sizeof(init_ntsc));
+                        break;
+
+                case VIDEO_MODE_PAL:
+                        saa7185_write_block(client, init_pal,
+                                            sizeof(init_pal));
+                        break;
+
+                case VIDEO_MODE_SECAM:
+                default:
+                        return -EINVAL;
+
+                }
+                encoder->norm = *iarg;
+        }
+                break;
+
+        case ENCODER_SET_INPUT:
+        {
+                int *iarg = arg;
+
+                /* RJ: *iarg = 0: input is from SA7111
+                 *iarg = 1: input is from ZR36060 */
+
+                switch (*iarg) {
+
+                case 0:
+                        /* Switch RTCE to 1 */
+                        saa7185_write(client, 0x61,
+                                      (encoder->reg[0x61] & 0xf7) | 0x08);
+                        saa7185_write(client, 0x6e, 0x01);
+                        break;
+
+                case 1:
+                        /* Switch RTCE to 0 */
+                        saa7185_write(client, 0x61,
+                                      (encoder->reg[0x61] & 0xf7) | 0x00);
+                        /* SW: a slight sync problem... */
+                        saa7185_write(client, 0x6e, 0x00);
+                        break;
+
+                default:
+                        return -EINVAL;
+
+                }
+        }
+                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;
+                saa7185_write(client, 0x61,
+                              (encoder->reg[0x61] & 0xbf) |
+                              (encoder->enable ? 0x00 : 0x40));
+        }
+                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_SAA7185 >> 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_saa7185;
+
+static int
+saa7185_detect_client (struct i2c_adapter *adapter,
+                       int                 address,
+                       int                 kind)
+{
+        int i;
+        struct i2c_client *client;
+        struct saa7185 *encoder;
+
+        dprintk(1,
+                KERN_INFO
+                "saa7185.c: detecting saa7185 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_saa7185;
+        client->flags = I2C_CLIENT_ALLOW_USE;
+        strlcpy(I2C_NAME(client), "saa7185", sizeof(I2C_NAME(client)));
+
+        encoder = kmalloc(sizeof(struct saa7185), GFP_KERNEL);
+        if (encoder == NULL) {
+                kfree(client);
+                return -ENOMEM;
+        }
+        memset(encoder, 0, sizeof(struct saa7185));
+        encoder->norm = VIDEO_MODE_NTSC;
+        encoder->enable = 1;
+        i2c_set_clientdata(client, encoder);
+
+        i = i2c_attach_client(client);
+        if (i) {
+                kfree(client);
+                kfree(encoder);
+                return i;
+        }
+
+        i = saa7185_write_block(client, init_common, sizeof(init_common));
+        if (i >= 0) {
+                i = saa7185_write_block(client, init_ntsc,
+                                        sizeof(init_ntsc));
+        }
+        if (i < 0) {
+                dprintk(1, KERN_ERR "%s_attach: init error %d\n",
+                        I2C_NAME(client), i);
+        } else {
+                dprintk(1,
+                        KERN_INFO
+                        "%s_attach: chip version %d at address 0x%x\n",
+                        I2C_NAME(client), saa7185_read(client) >> 5,
+                        client->addr << 1);
+        }
+
+        return 0;
+}
+
+static int
+saa7185_attach_adapter (struct i2c_adapter *adapter)
+{
+        dprintk(1,
+                KERN_INFO
+                "saa7185.c: starting probe for adapter %s (0x%x)\n",
+                I2C_NAME(adapter), adapter->id);
+        return i2c_probe(adapter, &addr_data, &saa7185_detect_client);
+}
+
+static int
+saa7185_detach_client (struct i2c_client *client)
+{
+        struct saa7185 *encoder = i2c_get_clientdata(client);
+        int err;
+
+        err = i2c_detach_client(client);
+        if (err) {
+                return err;
+        }
+
+        saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40);       /* SW: output off is active */
+        //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
+
+        kfree(encoder);
+        kfree(client);
+
+        return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static struct i2c_driver i2c_driver_saa7185 = {
+        .owner = THIS_MODULE,
+        .name = "saa7185",      /* name */
+
+        .id = I2C_DRIVERID_SAA7185B,
+        .flags = I2C_DF_NOTIFY,
+
+        .attach_adapter = saa7185_attach_adapter,
+        .detach_client = saa7185_detach_client,
+        .command = saa7185_command,
+};
+
+static int __init
+saa7185_init (void)
+{
+        return i2c_add_driver(&i2c_driver_saa7185);
+}
+
+static void __exit
+saa7185_exit (void)
+{
+        i2c_del_driver(&i2c_driver_saa7185);
+}
+
+module_init(saa7185_init);
+module_exit(saa7185_exit);