tree 03799a6aeccb715fd5c95dbd97257baa6b0aba92
parent 67e49a1abe3e9458c7ffba66775b350b5ceffae0
author Mauro Carvalho Chehab <[EMAIL PROTECTED]> Sat, 10 Sep 2005 03:04:03 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Sat, 10 Sep 2005 03:57:53 -0700

[PATCH] v4l: include saa6588 compiler option and files / fixes comments on 
tuner.h

- Include saa6588 compiler option and files.
- Fix comment on tuner.h
- linux/utsname.h replaced by linux/version.h to compile on vanilla 2.6.13

Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>

 drivers/media/video/Kconfig           |   12 
 drivers/media/video/Makefile          |    2 
 drivers/media/video/bttvp.h           |    2 
 drivers/media/video/cx88/cx88.h       |    2 
 drivers/media/video/rds.h             |   48 +++
 drivers/media/video/saa6588.c         |  534 ++++++++++++++++++++++++++++++++++
 drivers/media/video/saa7134/saa7134.h |    2 
 include/media/tuner.h                 |    2 
 8 files changed, 600 insertions(+), 4 deletions(-)

diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -25,6 +25,18 @@ config VIDEO_BT848
          To compile this driver as a module, choose M here: the
          module will be called bttv.
 
+config VIDEO_SAA6588
+       tristate "SAA6588 Radio Chip RDS decoder support on BT848 cards"
+       depends on VIDEO_DEV && I2C && VIDEO_BT848
+
+       help
+         Support for  Radio Data System (RDS) decoder. This allows seeing
+         radio station identification transmitted using this standard.
+         Currentlly, it works only with bt8x8 chips.
+
+         To compile this driver as a module, choose M here: the
+         module will be called saa6588.
+
 config VIDEO_PMS
        tristate "Mediavision Pro Movie Studio Video For Linux"
        depends on VIDEO_DEV && ISA
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -5,6 +5,7 @@
 bttv-objs      :=      bttv-driver.o bttv-cards.o bttv-if.o \
                        bttv-risc.o bttv-vbi.o bttv-i2c.o bttv-gpio.o
 zoran-objs      :=     zr36120.o zr36120_i2c.o zr36120_mem.o
+rds-objs        :=     saa6588.o
 zr36067-objs   :=      zoran_procfs.o zoran_device.o \
                        zoran_driver.o zoran_card.o
 tuner-objs     :=      tuner-core.o tuner-simple.o mt20xx.o tda8290.o tea5767.o
@@ -15,6 +16,7 @@ obj-$(CONFIG_VIDEO_BT848) += bttv.o msp3
 obj-$(CONFIG_SOUND_TVMIXER) += tvmixer.o
 
 obj-$(CONFIG_VIDEO_ZR36120) += zoran.o
+obj-$(CONFIG_VIDEO_SAA6588) += rds.o
 obj-$(CONFIG_VIDEO_SAA5246A) += saa5246a.o
 obj-$(CONFIG_VIDEO_SAA5249) += saa5249.o
 obj-$(CONFIG_VIDEO_CQCAM) += c-qcam.o
diff --git a/drivers/media/video/bttvp.h b/drivers/media/video/bttvp.h
--- a/drivers/media/video/bttvp.h
+++ b/drivers/media/video/bttvp.h
@@ -25,7 +25,7 @@
 #ifndef _BTTVP_H_
 #define _BTTVP_H_
 
-#include <linux/utsname.h>
+#include <linux/version.h>
 #define BTTV_VERSION_CODE KERNEL_VERSION(0,9,16)
 
 #include <linux/types.h>
diff --git a/drivers/media/video/cx88/cx88.h b/drivers/media/video/cx88/cx88.h
--- a/drivers/media/video/cx88/cx88.h
+++ b/drivers/media/video/cx88/cx88.h
@@ -34,7 +34,7 @@
 #include "btcx-risc.h"
 #include "cx88-reg.h"
 
-#include <linux/utsname.h>
+#include <linux/version.h>
 #define CX88_VERSION_CODE KERNEL_VERSION(0,0,5)
 
 #ifndef TRUE
diff --git a/drivers/media/video/rds.h b/drivers/media/video/rds.h
new file mode 100644
--- /dev/null
+++ b/drivers/media/video/rds.h
@@ -0,0 +1,48 @@
+/*
+
+    Types and defines needed for RDS. This is included by
+    saa6588.c and every driver (e.g. bttv-driver.c) that wants
+    to use the saa6588 module.
+
+    Instead of having a seperate rds.h, I'd prefer to include
+    this stuff in one of the already existing files like tuner.h
+
+    (c) 2005 by Hans J. Koch
+
+    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.
+
+*/
+
+#ifndef _RDS_H
+#define _RDS_H
+
+struct rds_command {
+       unsigned int  block_count;
+       int           result;
+       unsigned char *buffer;
+       struct file   *instance;
+       poll_table    *event_list;
+};
+
+#define RDS_CMD_OPEN   _IOW('R',1,int)
+#define RDS_CMD_CLOSE  _IOW('R',2,int)
+#define RDS_CMD_READ   _IOR('R',3,int)
+#define RDS_CMD_POLL   _IOR('R',4,int)
+
+#endif
+
+
+
+
diff --git a/drivers/media/video/saa6588.c b/drivers/media/video/saa6588.c
new file mode 100644
--- /dev/null
+++ b/drivers/media/video/saa6588.c
@@ -0,0 +1,534 @@
+/*
+    Driver for SAA6588 RDS decoder
+
+    (c) 2005 Hans J. Koch
+
+    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/kernel.h>
+#include <linux/i2c.h>
+#include <linux/types.h>
+#include <linux/videodev.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/wait.h>
+#include <asm/uaccess.h>
+
+#include <media/id.h>
+
+#include "rds.h"
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = {
+       0x20 >> 1,
+       0x22 >> 1,
+       I2C_CLIENT_END,
+};
+
+I2C_CLIENT_INSMOD;
+
+/* insmod options */
+static unsigned int debug = 0;
+static unsigned int xtal = 0;
+static unsigned int rbds = 0;
+static unsigned int plvl = 0;
+static unsigned int bufblocks = 100;
+
+MODULE_PARM(debug, "i");
+MODULE_PARM_DESC(debug, "enable debug messages");
+MODULE_PARM(xtal, "i");
+MODULE_PARM_DESC(xtal, "select oscillator frequency (0..3), default 0");
+MODULE_PARM(rbds, "i");
+MODULE_PARM_DESC(rbds, "select mode, 0=RDS, 1=RBDS, default 0");
+MODULE_PARM(plvl, "i");
+MODULE_PARM_DESC(plvl, "select pause level (0..3), default 0");
+MODULE_PARM(bufblocks, "i");
+MODULE_PARM_DESC(bufblocks, "number of buffered blocks, default 100");
+
+MODULE_DESCRIPTION("v4l2 driver module for SAA6588 RDS decoder");
+MODULE_AUTHOR("Hans J. Koch <[EMAIL PROTECTED]>");
+
+MODULE_LICENSE("GPL");
+
+/* ---------------------------------------------------------------------- */
+
+#define UNSET       (-1U)
+#define PREFIX      "saa6588: "
+#define dprintk     if (debug) printk
+
+struct saa6588 {
+       struct i2c_client client;
+       struct work_struct work;
+       struct timer_list timer;
+       spinlock_t lock;
+       unsigned char *buffer;
+       unsigned int buf_size;
+       unsigned int rd_index;
+       unsigned int wr_index;
+       unsigned int block_count;
+       unsigned char last_blocknum;
+       wait_queue_head_t read_queue;
+       int data_available_for_read;
+};
+
+static struct i2c_driver driver;
+static struct i2c_client client_template;
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * SAA6588 defines
+ */
+
+/* Initialization and mode control byte (0w) */
+
+/* bit 0+1 (DAC0/DAC1) */
+#define cModeStandard           0x00
+#define cModeFastPI             0x01
+#define cModeReducedRequest     0x02
+#define cModeInvalid            0x03
+
+/* bit 2 (RBDS) */
+#define cProcessingModeRDS      0x00
+#define cProcessingModeRBDS     0x04
+
+/* bit 3+4 (SYM0/SYM1) */
+#define cErrCorrectionNone      0x00
+#define cErrCorrection2Bits     0x08
+#define cErrCorrection5Bits     0x10
+#define cErrCorrectionNoneRBDS  0x18
+
+/* bit 5 (NWSY) */
+#define cSyncNormal             0x00
+#define cSyncRestart            0x20
+
+/* bit 6 (TSQD) */
+#define cSigQualityDetectOFF    0x00
+#define cSigQualityDetectON     0x40
+
+/* bit 7 (SQCM) */
+#define cSigQualityTriggered    0x00
+#define cSigQualityContinous    0x80
+
+/* Pause level and flywheel control byte (1w) */
+
+/* bits 0..5 (FEB0..FEB5) */
+#define cFlywheelMaxBlocksMask  0x3F
+#define cFlywheelDefault        0x20
+
+/* bits 6+7 (PL0/PL1) */
+#define cPauseLevel_11mV       0x00
+#define cPauseLevel_17mV        0x40
+#define cPauseLevel_27mV        0x80
+#define cPauseLevel_43mV        0xC0
+
+/* Pause time/oscillator frequency/quality detector control byte (1w) */
+
+/* bits 0..4 (SQS0..SQS4) */
+#define cQualityDetectSensMask  0x1F
+#define cQualityDetectDefault   0x0F
+
+/* bit 5 (SOSC) */
+#define cSelectOscFreqOFF      0x00
+#define cSelectOscFreqON       0x20
+
+/* bit 6+7 (PTF0/PTF1) */
+#define cOscFreq_4332kHz       0x00
+#define cOscFreq_8664kHz       0x40
+#define cOscFreq_12996kHz      0x80
+#define cOscFreq_17328kHz      0xC0
+
+/* ---------------------------------------------------------------------- */
+
+static int block_to_user_buf(struct saa6588 *s, unsigned char *user_buf)
+{
+       int i;
+
+       if (s->rd_index == s->wr_index) {
+               if (debug > 2)
+                       dprintk(PREFIX "Read: buffer empty.\n");
+               return 0;
+       }
+
+       if (debug > 2) {
+               dprintk(PREFIX "Read: ");
+               for (i = s->rd_index; i < s->rd_index + 3; i++)
+                       dprintk("0x%02x ", s->buffer[i]);
+       }
+
+       if (copy_to_user(user_buf, &s->buffer[s->rd_index], 3))
+               return -EFAULT;
+
+       s->rd_index += 3;
+       if (s->rd_index >= s->buf_size)
+               s->rd_index = 0;
+       s->block_count--;
+
+       if (debug > 2)
+               dprintk("%d blocks total.\n", s->block_count);
+
+       return 1;
+}
+
+static void read_from_buf(struct saa6588 *s, struct rds_command *a)
+{
+       unsigned long flags;
+
+       unsigned char *buf_ptr = a->buffer;     /* This is a user space buffer! 
*/
+       unsigned int i;
+       unsigned int rd_blocks;
+
+       a->result = 0;
+       if (!a->buffer)
+               return;
+
+       while (!s->data_available_for_read) {
+               int ret = wait_event_interruptible(s->read_queue,
+                                            s->data_available_for_read);
+               if (ret == -ERESTARTSYS) {
+                       a->result = -EINTR;
+                       return;
+               }
+       }
+
+       spin_lock_irqsave(&s->lock, flags);
+       rd_blocks = a->block_count;
+       if (rd_blocks > s->block_count)
+               rd_blocks = s->block_count;
+
+       if (!rd_blocks)
+               return;
+
+       for (i = 0; i < rd_blocks; i++) {
+               if (block_to_user_buf(s, buf_ptr)) {
+                       buf_ptr += 3;
+                       a->result++;
+               } else
+                       break;
+       }
+       a->result *= 3;
+       s->data_available_for_read = (s->block_count > 0);
+       spin_unlock_irqrestore(&s->lock, flags);
+}
+
+static void block_to_buf(struct saa6588 *s, unsigned char *blockbuf)
+{
+       unsigned int i;
+
+       if (debug > 3)
+               dprintk(PREFIX "New block: ");
+
+       for (i = 0; i < 3; ++i) {
+               if (debug > 3)
+                       dprintk("0x%02x ", blockbuf[i]);
+               s->buffer[s->wr_index] = blockbuf[i];
+               s->wr_index++;
+       }
+
+       if (s->wr_index >= s->buf_size)
+               s->wr_index = 0;
+
+       if (s->wr_index == s->rd_index) {
+               s->rd_index++;
+               if (s->rd_index >= s->buf_size)
+                       s->rd_index = 0;
+       } else
+               s->block_count++;
+
+       if (debug > 3)
+               dprintk("%d blocks total.\n", s->block_count);
+}
+
+static void saa6588_i2c_poll(struct saa6588 *s)
+{
+       unsigned long flags;
+       unsigned char tmpbuf[6];
+       unsigned char blocknum;
+       unsigned char tmp;
+
+       /* Although we only need 3 bytes, we have to read at least 6.
+          SAA6588 returns garbage otherwise */
+       if (6 != i2c_master_recv(&s->client, &tmpbuf[0], 6)) {
+               if (debug > 1)
+                       dprintk(PREFIX "read error!\n");
+               return;
+       }
+
+       blocknum = tmpbuf[0] >> 5;
+       if (blocknum == s->last_blocknum) {
+               if (debug > 3)
+                       dprintk("Saw block %d again.\n", blocknum);
+               return;
+       }
+
+       s->last_blocknum = blocknum;
+
+       /*
+          Byte order according to v4l2 specification:
+
+          Byte 0: Least Significant Byte of RDS Block
+          Byte 1: Most Significant Byte of RDS Block
+          Byte 2 Bit 7: Error bit. Indicates that an uncorrectable error
+          occurred during reception of this block.
+          Bit 6: Corrected bit. Indicates that an error was
+          corrected for this data block.
+          Bits 5-3: Received Offset. Indicates the offset received
+          by the sync system.
+          Bits 2-0: Offset Name. Indicates the offset applied to this data.
+
+          SAA6588 byte order is Status-MSB-LSB, so we have to swap the
+          first and the last of the 3 bytes block.
+        */
+
+       tmp = tmpbuf[2];
+       tmpbuf[2] = tmpbuf[0];
+       tmpbuf[0] = tmp;
+
+       tmp = blocknum;
+       tmp |= blocknum << 3;   /* Received offset == Offset Name (OK ?) */
+       if ((tmpbuf[2] & 0x03) == 0x03)
+               tmp |= 0x80;    /* uncorrectable error */
+       else if ((tmpbuf[2] & 0x03) != 0x00)
+               tmp |= 0x40;    /* corrected error */
+       tmpbuf[2] = tmp;        /* Is this enough ? Should we also check other 
bits ? */
+
+       spin_lock_irqsave(&s->lock, flags);
+       block_to_buf(s, tmpbuf);
+       spin_unlock_irqrestore(&s->lock, flags);
+       s->data_available_for_read = 1;
+       wake_up_interruptible(&s->read_queue);
+}
+
+static void saa6588_timer(unsigned long data)
+{
+       struct saa6588 *s = (struct saa6588 *)data;
+
+       schedule_work(&s->work);
+}
+
+static void saa6588_work(void *data)
+{
+       struct saa6588 *s = (struct saa6588 *)data;
+
+       saa6588_i2c_poll(s);
+       mod_timer(&s->timer, jiffies + HZ / 50);        /* 20 msec */
+}
+
+static int saa6588_configure(struct saa6588 *s)
+{
+       unsigned char buf[3];
+       int rc;
+
+       buf[0] = cSyncRestart;
+       if (rbds)
+               buf[0] |= cProcessingModeRBDS;
+
+       buf[1] = cFlywheelDefault;
+       switch (plvl) {
+       case 0:
+               buf[1] |= cPauseLevel_11mV;
+               break;
+       case 1:
+               buf[1] |= cPauseLevel_17mV;
+               break;
+       case 2:
+               buf[1] |= cPauseLevel_27mV;
+               break;
+       case 3:
+               buf[1] |= cPauseLevel_43mV;
+               break;
+       default:                /* nothing */
+               break;
+       }
+
+       buf[2] = cQualityDetectDefault | cSelectOscFreqON;
+
+       switch (xtal) {
+       case 0:
+               buf[2] |= cOscFreq_4332kHz;
+               break;
+       case 1:
+               buf[2] |= cOscFreq_8664kHz;
+               break;
+       case 2:
+               buf[2] |= cOscFreq_12996kHz;
+               break;
+       case 3:
+               buf[2] |= cOscFreq_17328kHz;
+               break;
+       default:                /* nothing */
+               break;
+       }
+
+       dprintk(PREFIX "writing: 0w=0x%02x 1w=0x%02x 2w=0x%02x\n",
+               buf[0], buf[1], buf[2]);
+
+       if (3 != (rc = i2c_master_send(&s->client, buf, 3)))
+               printk(PREFIX "i2c i/o error: rc == %d (should be 3)\n", rc);
+
+       return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int saa6588_attach(struct i2c_adapter *adap, int addr, int kind)
+{
+       struct saa6588 *s;
+       client_template.adapter = adap;
+       client_template.addr = addr;
+
+       printk(PREFIX "chip found @ 0x%x\n", addr << 1);
+
+       if (NULL == (s = kmalloc(sizeof(*s), GFP_KERNEL)))
+               return -ENOMEM;
+
+       s->buf_size = bufblocks * 3;
+
+       if (NULL == (s->buffer = kmalloc(s->buf_size, GFP_KERNEL))) {
+               kfree(s);
+               return -ENOMEM;
+       }
+       s->client = client_template;
+       s->block_count = 0;
+       s->wr_index = 0;
+       s->rd_index = 0;
+       s->last_blocknum = 0xff;
+       init_waitqueue_head(&s->read_queue);
+       s->data_available_for_read = 0;
+       i2c_set_clientdata(&s->client, s);
+       i2c_attach_client(&s->client);
+
+       saa6588_configure(s);
+
+       /* start polling via eventd */
+       INIT_WORK(&s->work, saa6588_work, s);
+       init_timer(&s->timer);
+       s->timer.function = saa6588_timer;
+       s->timer.data = (unsigned long)s;
+       schedule_work(&s->work);
+
+       return 0;
+}
+
+static int saa6588_probe(struct i2c_adapter *adap)
+{
+#ifdef I2C_CLASS_TV_ANALOG
+       if (adap->class & I2C_CLASS_TV_ANALOG)
+               return i2c_probe(adap, &addr_data, saa6588_attach);
+#else
+       switch (adap->id) {
+       case I2C_ALGO_BIT | I2C_HW_B_BT848:
+       case I2C_ALGO_BIT | I2C_HW_B_RIVA:
+       case I2C_ALGO_SAA7134:
+               return i2c_probe(adap, &addr_data, saa6588_attach);
+               break;
+       }
+#endif
+       return 0;
+}
+
+static int saa6588_detach(struct i2c_client *client)
+{
+       struct saa6588 *s = i2c_get_clientdata(client);
+
+       del_timer_sync(&s->timer);
+       flush_scheduled_work();
+
+       i2c_detach_client(client);
+       kfree(s->buffer);
+       kfree(s);
+       return 0;
+}
+
+static int saa6588_command(struct i2c_client *client, unsigned int cmd,
+                                                       void *arg)
+{
+       struct saa6588 *s = i2c_get_clientdata(client);
+       struct rds_command *a = (struct rds_command *)arg;
+
+       switch (cmd) {
+               /* --- open() for /dev/radio --- */
+       case RDS_CMD_OPEN:
+               a->result = 0;  /* return error if chip doesn't work ??? */
+               break;
+               /* --- close() for /dev/radio --- */
+       case RDS_CMD_CLOSE:
+               s->data_available_for_read = 1;
+               wake_up_interruptible(&s->read_queue);
+               a->result = 0;
+               break;
+               /* --- read() for /dev/radio --- */
+       case RDS_CMD_READ:
+               read_from_buf(s, a);
+               break;
+               /* --- poll() for /dev/radio --- */
+       case RDS_CMD_POLL:
+               a->result = 0;
+               if (s->data_available_for_read) {
+                       a->result |= POLLIN | POLLRDNORM;
+               }
+               poll_wait(a->instance, &s->read_queue, a->event_list);
+               break;
+
+       default:
+               /* nothing */
+               break;
+       }
+       return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static struct i2c_driver driver = {
+       .owner = THIS_MODULE,
+       .name = "i2c saa6588 driver",
+       .id = -1,               /* FIXME */
+       .flags = I2C_DF_NOTIFY,
+       .attach_adapter = saa6588_probe,
+       .detach_client = saa6588_detach,
+       .command = saa6588_command,
+};
+
+static struct i2c_client client_template = {
+       .name = "saa6588",
+       .flags = I2C_CLIENT_ALLOW_USE,
+       .driver = &driver,
+};
+
+static int __init saa6588_init_module(void)
+{
+       return i2c_add_driver(&driver);
+}
+
+static void __exit saa6588_cleanup_module(void)
+{
+       i2c_del_driver(&driver);
+}
+
+module_init(saa6588_init_module);
+module_exit(saa6588_cleanup_module);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
diff --git a/drivers/media/video/saa7134/saa7134.h 
b/drivers/media/video/saa7134/saa7134.h
--- a/drivers/media/video/saa7134/saa7134.h
+++ b/drivers/media/video/saa7134/saa7134.h
@@ -19,7 +19,7 @@
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#include <linux/utsname.h>
+#include <linux/version.h>
 #define SAA7134_VERSION_CODE KERNEL_VERSION(0,2,14)
 
 #include <linux/pci.h>
diff --git a/include/media/tuner.h b/include/media/tuner.h
--- a/include/media/tuner.h
+++ b/include/media/tuner.h
@@ -1,4 +1,4 @@
- *
+/*
     tuner.h - definition for different tuners
 
     Copyright (C) 1997 Markus Schroeder ([EMAIL PROTECTED])
-
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