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path: root/drivers/media/video/saa7111.c
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-rw-r--r--drivers/media/video/saa7111.c627
1 files changed, 627 insertions, 0 deletions
diff --git a/drivers/media/video/saa7111.c b/drivers/media/video/saa7111.c
new file mode 100644
index 000000000000..0a873112ae23
--- /dev/null
+++ b/drivers/media/video/saa7111.c
@@ -0,0 +1,627 @@
+/*
+ * saa7111 - Philips SAA7111A video decoder 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)
+ *
+ * Changes by Michael Hunold <michael@mihu.de>
+ * - implemented DECODER_SET_GPIO, DECODER_INIT, DECODER_SET_VBI_BYPASS
+ *
+ * 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 SAA7111 video decoder 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_decoder.h>
+
+static int debug = 0;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+#define dprintk(num, format, args...) \
+ do { \
+ if (debug >= num) \
+ printk(format, ##args); \
+ } while (0)
+
+/* ----------------------------------------------------------------------- */
+
+struct saa7111 {
+ unsigned char reg[32];
+
+ int norm;
+ int input;
+ int enable;
+ int bright;
+ int contrast;
+ int hue;
+ int sat;
+};
+
+#define I2C_SAA7111 0x48
+
+/* ----------------------------------------------------------------------- */
+
+static inline int
+saa7111_write (struct i2c_client *client,
+ u8 reg,
+ u8 value)
+{
+ struct saa7111 *decoder = i2c_get_clientdata(client);
+
+ decoder->reg[reg] = value;
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static int
+saa7111_write_block (struct i2c_client *client,
+ const u8 *data,
+ unsigned int len)
+{
+ int ret = -1;
+ u8 reg;
+
+ /* the saa7111 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 saa7111 *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 = saa7111_write(client, reg,
+ *data++)) < 0)
+ break;
+ len -= 2;
+ }
+ }
+
+ return ret;
+}
+
+static int
+saa7111_init_decoder (struct i2c_client *client,
+ struct video_decoder_init *init)
+{
+ return saa7111_write_block(client, init->data, init->len);
+}
+
+static inline int
+saa7111_read (struct i2c_client *client,
+ u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const unsigned char saa7111_i2c_init[] = {
+ 0x00, 0x00, /* 00 - ID byte */
+ 0x01, 0x00, /* 01 - reserved */
+
+ /*front end */
+ 0x02, 0xd0, /* 02 - FUSE=3, GUDL=2, MODE=0 */
+ 0x03, 0x23, /* 03 - HLNRS=0, VBSL=1, WPOFF=0,
+ * HOLDG=0, GAFIX=0, GAI1=256, GAI2=256 */
+ 0x04, 0x00, /* 04 - GAI1=256 */
+ 0x05, 0x00, /* 05 - GAI2=256 */
+
+ /* decoder */
+ 0x06, 0xf3, /* 06 - HSB at 13(50Hz) / 17(60Hz)
+ * pixels after end of last line */
+ /*0x07, 0x13, * 07 - HSS at 113(50Hz) / 117(60Hz) pixels
+ * after end of last line */
+ 0x07, 0xe8, /* 07 - HSS seems to be needed to
+ * work with NTSC, too */
+ 0x08, 0xc8, /* 08 - AUFD=1, FSEL=1, EXFIL=0,
+ * VTRC=1, HPLL=0, VNOI=0 */
+ 0x09, 0x01, /* 09 - BYPS=0, PREF=0, BPSS=0,
+ * VBLB=0, UPTCV=0, APER=1 */
+ 0x0a, 0x80, /* 0a - BRIG=128 */
+ 0x0b, 0x47, /* 0b - CONT=1.109 */
+ 0x0c, 0x40, /* 0c - SATN=1.0 */
+ 0x0d, 0x00, /* 0d - HUE=0 */
+ 0x0e, 0x01, /* 0e - CDTO=0, CSTD=0, DCCF=0,
+ * FCTC=0, CHBW=1 */
+ 0x0f, 0x00, /* 0f - reserved */
+ 0x10, 0x48, /* 10 - OFTS=1, HDEL=0, VRLN=1, YDEL=0 */
+ 0x11, 0x1c, /* 11 - GPSW=0, CM99=0, FECO=0, COMPO=1,
+ * OEYC=1, OEHV=1, VIPB=0, COLO=0 */
+ 0x12, 0x00, /* 12 - output control 2 */
+ 0x13, 0x00, /* 13 - output control 3 */
+ 0x14, 0x00, /* 14 - reserved */
+ 0x15, 0x00, /* 15 - VBI */
+ 0x16, 0x00, /* 16 - VBI */
+ 0x17, 0x00, /* 17 - VBI */
+};
+
+static int
+saa7111_command (struct i2c_client *client,
+ unsigned int cmd,
+ void *arg)
+{
+ struct saa7111 *decoder = i2c_get_clientdata(client);
+
+ switch (cmd) {
+
+ case 0:
+ case DECODER_INIT:
+ {
+ struct video_decoder_init *init = arg;
+ if (NULL != init)
+ return saa7111_init_decoder(client, init);
+ else {
+ struct video_decoder_init vdi;
+ vdi.data = saa7111_i2c_init;
+ vdi.len = sizeof(saa7111_i2c_init);
+ return saa7111_init_decoder(client, &vdi);
+ }
+ }
+
+ case DECODER_DUMP:
+ {
+ int i;
+
+ for (i = 0; i < 32; i += 16) {
+ int j;
+
+ printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
+ for (j = 0; j < 16; ++j) {
+ printk(" %02x",
+ saa7111_read(client, i + j));
+ }
+ printk("\n");
+ }
+ }
+ break;
+
+ case DECODER_GET_CAPABILITIES:
+ {
+ struct video_decoder_capability *cap = arg;
+
+ cap->flags = VIDEO_DECODER_PAL |
+ VIDEO_DECODER_NTSC |
+ VIDEO_DECODER_SECAM |
+ 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 = saa7111_read(client, 0x1f);
+ dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
+ status);
+ res = 0;
+ if ((status & (1 << 6)) == 0) {
+ 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;
+ case VIDEO_MODE_SECAM:
+ res |= DECODER_STATUS_SECAM;
+ break;
+ default:
+ case VIDEO_MODE_AUTO:
+ if ((status & (1 << 5)) != 0) {
+ res |= DECODER_STATUS_NTSC;
+ } else {
+ res |= DECODER_STATUS_PAL;
+ }
+ break;
+ }
+ if ((status & (1 << 0)) != 0) {
+ res |= DECODER_STATUS_COLOR;
+ }
+ *iarg = res;
+ }
+ break;
+
+ case DECODER_SET_GPIO:
+ {
+ int *iarg = arg;
+ if (0 != *iarg) {
+ saa7111_write(client, 0x11,
+ (decoder->reg[0x11] | 0x80));
+ } else {
+ saa7111_write(client, 0x11,
+ (decoder->reg[0x11] & 0x7f));
+ }
+ break;
+ }
+
+ case DECODER_SET_VBI_BYPASS:
+ {
+ int *iarg = arg;
+ if (0 != *iarg) {
+ saa7111_write(client, 0x13,
+ (decoder->reg[0x13] & 0xf0) | 0x0a);
+ } else {
+ saa7111_write(client, 0x13,
+ (decoder->reg[0x13] & 0xf0));
+ }
+ break;
+ }
+
+ case DECODER_SET_NORM:
+ {
+ int *iarg = arg;
+
+ switch (*iarg) {
+
+ case VIDEO_MODE_NTSC:
+ saa7111_write(client, 0x08,
+ (decoder->reg[0x08] & 0x3f) | 0x40);
+ saa7111_write(client, 0x0e,
+ (decoder->reg[0x0e] & 0x8f));
+ break;
+
+ case VIDEO_MODE_PAL:
+ saa7111_write(client, 0x08,
+ (decoder->reg[0x08] & 0x3f) | 0x00);
+ saa7111_write(client, 0x0e,
+ (decoder->reg[0x0e] & 0x8f));
+ break;
+
+ case VIDEO_MODE_SECAM:
+ saa7111_write(client, 0x08,
+ (decoder->reg[0x08] & 0x3f) | 0x00);
+ saa7111_write(client, 0x0e,
+ (decoder->reg[0x0e] & 0x8f) | 0x50);
+ break;
+
+ case VIDEO_MODE_AUTO:
+ saa7111_write(client, 0x08,
+ (decoder->reg[0x08] & 0x3f) | 0x80);
+ saa7111_write(client, 0x0e,
+ (decoder->reg[0x0e] & 0x8f));
+ break;
+
+ default:
+ return -EINVAL;
+
+ }
+ decoder->norm = *iarg;
+ }
+ break;
+
+ case DECODER_SET_INPUT:
+ {
+ int *iarg = arg;
+
+ if (*iarg < 0 || *iarg > 7) {
+ return -EINVAL;
+ }
+
+ if (decoder->input != *iarg) {
+ decoder->input = *iarg;
+ /* select mode */
+ saa7111_write(client, 0x02,
+ (decoder->
+ reg[0x02] & 0xf8) | decoder->input);
+ /* bypass chrominance trap for modes 4..7 */
+ saa7111_write(client, 0x09,
+ (decoder->
+ reg[0x09] & 0x7f) | ((decoder->
+ input >
+ 3) ? 0x80 :
+ 0));
+ }
+ }
+ break;
+
+ case DECODER_SET_OUTPUT:
+ {
+ int *iarg = arg;
+
+ /* not much choice of outputs */
+ if (*iarg != 0) {
+ return -EINVAL;
+ }
+ }
+ break;
+
+ case DECODER_ENABLE_OUTPUT:
+ {
+ int *iarg = arg;
+ int enable = (*iarg != 0);
+
+ if (decoder->enable != enable) {
+ decoder->enable = enable;
+
+ /* RJ: If output should be disabled (for
+ * playing videos), we also need a open PLL.
+ * The input is set to 0 (where no input
+ * source is connected), although this
+ * is not necessary.
+ *
+ * If output should be enabled, we have to
+ * reverse the above.
+ */
+
+ if (decoder->enable) {
+ saa7111_write(client, 0x02,
+ (decoder->
+ reg[0x02] & 0xf8) |
+ decoder->input);
+ saa7111_write(client, 0x08,
+ (decoder->reg[0x08] & 0xfb));
+ saa7111_write(client, 0x11,
+ (decoder->
+ reg[0x11] & 0xf3) | 0x0c);
+ } else {
+ saa7111_write(client, 0x02,
+ (decoder->reg[0x02] & 0xf8));
+ saa7111_write(client, 0x08,
+ (decoder->
+ reg[0x08] & 0xfb) | 0x04);
+ saa7111_write(client, 0x11,
+ (decoder->reg[0x11] & 0xf3));
+ }
+ }
+ }
+ break;
+
+ case DECODER_SET_PICTURE:
+ {
+ struct video_picture *pic = arg;
+
+ if (decoder->bright != pic->brightness) {
+ /* We want 0 to 255 we get 0-65535 */
+ decoder->bright = pic->brightness;
+ saa7111_write(client, 0x0a, decoder->bright >> 8);
+ }
+ if (decoder->contrast != pic->contrast) {
+ /* We want 0 to 127 we get 0-65535 */
+ decoder->contrast = pic->contrast;
+ saa7111_write(client, 0x0b,
+ decoder->contrast >> 9);
+ }
+ if (decoder->sat != pic->colour) {
+ /* We want 0 to 127 we get 0-65535 */
+ decoder->sat = pic->colour;
+ saa7111_write(client, 0x0c, decoder->sat >> 9);
+ }
+ if (decoder->hue != pic->hue) {
+ /* We want -128 to 127 we get 0-65535 */
+ decoder->hue = pic->hue;
+ saa7111_write(client, 0x0d,
+ (decoder->hue - 32768) >> 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_SAA7111 >> 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_saa7111;
+
+static int
+saa7111_detect_client (struct i2c_adapter *adapter,
+ int address,
+ int kind)
+{
+ int i;
+ struct i2c_client *client;
+ struct saa7111 *decoder;
+ struct video_decoder_init vdi;
+
+ dprintk(1,
+ KERN_INFO
+ "saa7111.c: detecting saa7111 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_saa7111;
+ client->flags = I2C_CLIENT_ALLOW_USE;
+ strlcpy(I2C_NAME(client), "saa7111", sizeof(I2C_NAME(client)));
+
+ decoder = kmalloc(sizeof(struct saa7111), GFP_KERNEL);
+ if (decoder == NULL) {
+ kfree(client);
+ return -ENOMEM;
+ }
+ memset(decoder, 0, sizeof(struct saa7111));
+ decoder->norm = VIDEO_MODE_NTSC;
+ decoder->input = 0;
+ decoder->enable = 1;
+ decoder->bright = 32768;
+ decoder->contrast = 32768;
+ decoder->hue = 32768;
+ decoder->sat = 32768;
+ i2c_set_clientdata(client, decoder);
+
+ i = i2c_attach_client(client);
+ if (i) {
+ kfree(client);
+ kfree(decoder);
+ return i;
+ }
+
+ vdi.data = saa7111_i2c_init;
+ vdi.len = sizeof(saa7111_i2c_init);
+ i = saa7111_init_decoder(client, &vdi);
+ if (i < 0) {
+ dprintk(1, KERN_ERR "%s_attach error: init status %d\n",
+ I2C_NAME(client), i);
+ } else {
+ dprintk(1,
+ KERN_INFO
+ "%s_attach: chip version %x at address 0x%x\n",
+ I2C_NAME(client), saa7111_read(client, 0x00) >> 4,
+ client->addr << 1);
+ }
+
+ return 0;
+}
+
+static int
+saa7111_attach_adapter (struct i2c_adapter *adapter)
+{
+ dprintk(1,
+ KERN_INFO
+ "saa7111.c: starting probe for adapter %s (0x%x)\n",
+ I2C_NAME(adapter), adapter->id);
+ return i2c_probe(adapter, &addr_data, &saa7111_detect_client);
+}
+
+static int
+saa7111_detach_client (struct i2c_client *client)
+{
+ struct saa7111 *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_saa7111 = {
+ .owner = THIS_MODULE,
+ .name = "saa7111",
+
+ .id = I2C_DRIVERID_SAA7111A,
+ .flags = I2C_DF_NOTIFY,
+
+ .attach_adapter = saa7111_attach_adapter,
+ .detach_client = saa7111_detach_client,
+ .command = saa7111_command,
+};
+
+static int __init
+saa7111_init (void)
+{
+ return i2c_add_driver(&i2c_driver_saa7111);
+}
+
+static void __exit
+saa7111_exit (void)
+{
+ i2c_del_driver(&i2c_driver_saa7111);
+}
+
+module_init(saa7111_init);
+module_exit(saa7111_exit);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.