/*
+ *
* device driver for philips saa7134 based TV cards
* i2c interface support
*
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include "saa7134-reg.h"
#include "saa7134.h"
+#include <media/v4l2-common.h>
/* ----------------------------------------------------------- */
static unsigned int i2c_debug = 0;
-MODULE_PARM(i2c_debug,"i");
+module_param(i2c_debug, int, 0644);
MODULE_PARM_DESC(i2c_debug,"enable debug messages [i2c]");
static unsigned int i2c_scan = 0;
-MODULE_PARM(i2c_scan,"i");
+module_param(i2c_scan, int, 0444);
MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time");
#define d1printk if (1 == i2c_debug) printk
static inline enum i2c_status i2c_get_status(struct saa7134_dev *dev)
{
enum i2c_status status;
-
+
status = saa_readb(SAA7134_I2C_ATTR_STATUS) & 0x0f;
d2printk(KERN_DEBUG "%s: i2c stat <= %s\n",dev->name,
str_i2c_status[status]);
if (!i2c_is_idle(status))
return FALSE;
-
+
i2c_set_attr(dev,NOP);
return TRUE;
}
enum i2c_status status;
__u32 dword;
-#if 0
- i2c_set_attr(dev,attr);
- saa_writeb(SAA7134_I2C_DATA, data);
-#else
/* have to write both attr + data in one 32bit word */
dword = saa_readl(SAA7134_I2C_ATTR_STATUS >> 2);
dword &= 0x0f;
dword |= (attr << 6);
dword |= ((__u32)data << 8);
- dword |= 0x00 << 16;
+ dword |= 0x00 << 16; /* 100 kHz */
+// dword |= 0x40 << 16; /* 400 kHz */
dword |= 0xf0 << 24;
saa_writel(SAA7134_I2C_ATTR_STATUS >> 2, dword);
-#endif
d2printk(KERN_DEBUG "%s: i2c data => 0x%x\n",dev->name,data);
-
+
if (!i2c_is_busy_wait(dev))
return -EIO;
status = i2c_get_status(dev);
{
enum i2c_status status;
unsigned char data;
-
+
i2c_set_attr(dev,CONTINUE);
if (!i2c_is_busy_wait(dev))
return -EIO;
}
static int saa7134_i2c_xfer(struct i2c_adapter *i2c_adap,
- struct i2c_msg msgs[], int num)
+ struct i2c_msg *msgs, int num)
{
struct saa7134_dev *dev = i2c_adap->algo_data;
enum i2c_status status;
unsigned char data;
int addr,rc,i,byte;
- status = i2c_get_status(dev);
+ status = i2c_get_status(dev);
if (!i2c_is_idle(status))
if (!i2c_reset(dev))
return -EIO;
+ d2printk("start xfer\n");
d1printk(KERN_DEBUG "%s: i2c xfer:",dev->name);
for (i = 0; i < num; i++) {
if (!(msgs[i].flags & I2C_M_NOSTART) || 0 == i) {
/* send address */
+ d2printk("send address\n");
addr = msgs[i].addr << 1;
if (msgs[i].flags & I2C_M_RD)
addr |= 1;
+ if (i > 0 && msgs[i].flags & I2C_M_RD) {
+ /* workaround for a saa7134 i2c bug
+ * needed to talk to the mt352 demux
+ * thanks to pinnacle for the hint */
+ int quirk = 0xfd;
+ d1printk(" [%02x quirk]",quirk);
+ i2c_send_byte(dev,START,quirk);
+ i2c_recv_byte(dev);
+ }
d1printk(" < %02x", addr);
rc = i2c_send_byte(dev,START,addr);
if (rc < 0)
}
if (msgs[i].flags & I2C_M_RD) {
/* read bytes */
+ d2printk("read bytes\n");
for (byte = 0; byte < msgs[i].len; byte++) {
d1printk(" =");
rc = i2c_recv_byte(dev);
}
} else {
/* write bytes */
+ d2printk("write bytes\n");
for (byte = 0; byte < msgs[i].len; byte++) {
data = msgs[i].buf[byte];
d1printk(" %02x", data);
}
}
}
+ d2printk("xfer done\n");
d1printk(" >");
i2c_set_attr(dev,STOP);
rc = -EIO;
if (!i2c_is_busy_wait(dev))
goto err;
- status = i2c_get_status(dev);
+ status = i2c_get_status(dev);
if (i2c_is_error(status))
goto err;
+ /* ensure that the bus is idle for at least one bit slot */
+ msleep(1);
d1printk("\n");
return num;
/* ----------------------------------------------------------- */
-static int algo_control(struct i2c_adapter *adapter,
+static int algo_control(struct i2c_adapter *adapter,
unsigned int cmd, unsigned long arg)
{
return 0;
return I2C_FUNC_SMBUS_EMUL;
}
-#ifndef I2C_PEC
-static void inc_use(struct i2c_adapter *adap)
-{
- MOD_INC_USE_COUNT;
-}
-
-static void dec_use(struct i2c_adapter *adap)
-{
- MOD_DEC_USE_COUNT;
-}
-#endif
-
static int attach_inform(struct i2c_client *client)
{
- struct saa7134_dev *dev = client->adapter->algo_data;
+ struct saa7134_dev *dev = client->adapter->algo_data;
int tuner = dev->tuner_type;
+ int conf = dev->tda9887_conf;
+ struct tuner_setup tun_setup;
+
+ d1printk( "%s i2c attach [addr=0x%x,client=%s]\n",
+ client->driver->driver.name, client->addr, client->name);
+
+ /* Am I an i2c remote control? */
+
+ switch (client->addr) {
+ case 0x7a:
+ case 0x47:
+ case 0x71:
+ {
+ struct IR_i2c *ir = i2c_get_clientdata(client);
+ d1printk("%s i2c IR detected (%s).\n",
+ client->driver->driver.name, ir->phys);
+ saa7134_set_i2c_ir(dev,ir);
+ break;
+ }
+ }
+
+ if (!client->driver->command)
+ return 0;
+
+ if (saa7134_boards[dev->board].radio_type != UNSET) {
+
+ tun_setup.type = saa7134_boards[dev->board].radio_type;
+ tun_setup.addr = saa7134_boards[dev->board].radio_addr;
+
+ if ((tun_setup.addr == ADDR_UNSET) || (tun_setup.addr == client->addr)) {
+ tun_setup.mode_mask = T_RADIO;
- saa7134_i2c_call_clients(dev,TUNER_SET_TYPE,&tuner);
- return 0;
+ client->driver->command(client, TUNER_SET_TYPE_ADDR, &tun_setup);
+ }
+ }
+
+ if (tuner != UNSET) {
+
+ tun_setup.type = tuner;
+ tun_setup.addr = saa7134_boards[dev->board].tuner_addr;
+
+ if ((tun_setup.addr == ADDR_UNSET)||(tun_setup.addr == client->addr)) {
+
+ tun_setup.mode_mask = T_ANALOG_TV;
+
+ client->driver->command(client,TUNER_SET_TYPE_ADDR, &tun_setup);
+ }
+ }
+
+ client->driver->command(client, TDA9887_SET_CONFIG, &conf);
+
+ return 0;
}
static struct i2c_algorithm saa7134_algo = {
- .name = "saa7134",
- .id = I2C_ALGO_SAA7134,
.master_xfer = saa7134_i2c_xfer,
.algo_control = algo_control,
.functionality = functionality,
};
static struct i2c_adapter saa7134_adap_template = {
-#ifdef I2C_PEC
.owner = THIS_MODULE,
-#else
- .inc_use = inc_use,
- .dec_use = dec_use,
-#endif
-#ifdef I2C_CLASS_TV_ANALOG
.class = I2C_CLASS_TV_ANALOG,
-#endif
- I2C_DEVNAME("saa7134"),
- .id = I2C_ALGO_SAA7134,
+ .name = "saa7134",
+ .id = I2C_HW_SAA7134,
.algo = &saa7134_algo,
.client_register = attach_inform,
};
static struct i2c_client saa7134_client_template = {
- I2C_DEVNAME("saa7134 internal"),
- .id = -1,
+ .name = "saa7134 internal",
};
/* ----------------------------------------------------------- */
return 0;
}
-static int
-saa7134_i2c_scan(struct saa7134_dev *dev)
+static char *i2c_devs[128] = {
+ [ 0x20 ] = "mpeg encoder (saa6752hs)",
+ [ 0xa0 >> 1 ] = "eeprom",
+ [ 0xc0 >> 1 ] = "tuner (analog)",
+ [ 0x86 >> 1 ] = "tda9887",
+};
+
+static void do_i2c_scan(char *name, struct i2c_client *c)
{
unsigned char buf;
int i,rc;
- for (i = 0; i < 256; i+= 2) {
- dev->i2c_client.addr = i >> 1;
- rc = i2c_master_recv(&dev->i2c_client,&buf,0);
+ for (i = 0; i < 128; i++) {
+ c->addr = i;
+ rc = i2c_master_recv(c,&buf,0);
if (rc < 0)
continue;
- printk("%s: i2c scan: found device @ %x%s\n",
- dev->name, i, (i == 0xa0) ? " [eeprom]" : "");
+ printk("%s: i2c scan: found device @ 0x%x [%s]\n",
+ name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
}
- return 0;
}
void saa7134_i2c_call_clients(struct saa7134_dev *dev,
strcpy(dev->i2c_adap.name,dev->name);
dev->i2c_adap.algo_data = dev;
i2c_add_adapter(&dev->i2c_adap);
-
+
dev->i2c_client = saa7134_client_template;
dev->i2c_client.adapter = &dev->i2c_adap;
-
+
saa7134_i2c_eeprom(dev,dev->eedata,sizeof(dev->eedata));
if (i2c_scan)
- saa7134_i2c_scan(dev);
+ do_i2c_scan(dev->name,&dev->i2c_client);
return 0;
}
git://git.onelab.eu / linux-2.6.git / blobdiff