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path: root/drivers/media/video/saa7185.c
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Diffstat (limited to 'drivers/media/video/saa7185.c')
-rw-r--r--drivers/media/video/saa7185.c524
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 0000000..5f0b224
--- /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);
generated by cgit v1.1 at 2024-10-30 05:10:05 +0000