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path: root/drivers/media/video/em28xx/em28xx-i2c.c
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Diffstat (limited to 'drivers/media/video/em28xx/em28xx-i2c.c')
-rw-r--r--drivers/media/video/em28xx/em28xx-i2c.c81
1 files changed, 55 insertions, 26 deletions
diff --git a/drivers/media/video/em28xx/em28xx-i2c.c b/drivers/media/video/em28xx/em28xx-i2c.c
index e3a4aa7a9df..cacd04d46e9 100644
--- a/drivers/media/video/em28xx/em28xx-i2c.c
+++ b/drivers/media/video/em28xx/em28xx-i2c.c
@@ -25,9 +25,9 @@
#include <linux/kernel.h>
#include <linux/usb.h>
#include <linux/i2c.h>
-#include <linux/video_decoder.h>
#include "em28xx.h"
+#include "tuner-xc2028.h"
#include <media/v4l2-common.h>
#include <media/tuner.h>
@@ -291,6 +291,31 @@ static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap,
return rc;
}
+/* based on linux/sunrpc/svcauth.h and linux/hash.h
+ * The original hash function returns a different value, if arch is x86_64
+ * or i386.
+ */
+static inline unsigned long em28xx_hash_mem(char *buf, int length, int bits)
+{
+ unsigned long hash = 0;
+ unsigned long l = 0;
+ int len = 0;
+ unsigned char c;
+ do {
+ if (len == length) {
+ c = (char)len;
+ len = -1;
+ } else
+ c = *buf++;
+ l = (l << 8) | c;
+ len++;
+ if ((len & (32 / 8 - 1)) == 0)
+ hash = ((hash^l) * 0x9e370001UL);
+ } while (len);
+
+ return (hash >> (32 - bits)) & 0xffffffffUL;
+}
+
static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len)
{
unsigned char buf, *p = eedata;
@@ -334,7 +359,11 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len)
printk("\n");
}
- printk(KERN_INFO "EEPROM ID= 0x%08x\n", em_eeprom->id);
+ if (em_eeprom->id == 0x9567eb1a)
+ dev->hash = em28xx_hash_mem(eedata, len, 32);
+
+ printk(KERN_INFO "EEPROM ID= 0x%08x, hash = 0x%08lx\n",
+ em_eeprom->id, dev->hash);
printk(KERN_INFO "Vendor/Product ID= %04x:%04x\n", em_eeprom->vendor_ID,
em_eeprom->product_ID);
@@ -391,21 +420,6 @@ static u32 functionality(struct i2c_adapter *adap)
}
-static int em28xx_set_tuner(int check_eeprom, struct i2c_client *client)
-{
- struct em28xx *dev = client->adapter->algo_data;
- struct tuner_setup tun_setup;
-
- if (dev->has_tuner) {
- tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
- tun_setup.type = dev->tuner_type;
- tun_setup.addr = dev->tuner_addr;
- em28xx_i2c_call_clients(dev, TUNER_SET_TYPE_ADDR, &tun_setup);
- }
-
- return (0);
-}
-
/*
* attach_inform()
* gets called when a device attaches to the i2c bus
@@ -421,6 +435,8 @@ static int attach_inform(struct i2c_client *client)
case 0x96:
case 0x94:
{
+ struct v4l2_priv_tun_config tda9887_cfg;
+
struct tuner_setup tun_setup;
tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
@@ -428,7 +444,11 @@ static int attach_inform(struct i2c_client *client)
tun_setup.addr = client->addr;
em28xx_i2c_call_clients(dev, TUNER_SET_TYPE_ADDR, &tun_setup);
- em28xx_i2c_call_clients(dev, TDA9887_SET_CONFIG, &dev->tda9887_conf);
+
+ tda9887_cfg.tuner = TUNER_TDA9887;
+ tda9887_cfg.priv = &dev->tda9887_conf;
+ em28xx_i2c_call_clients(dev, TUNER_SET_CONFIG,
+ &tda9887_cfg);
break;
}
case 0x42:
@@ -458,9 +478,11 @@ static int attach_inform(struct i2c_client *client)
break;
default:
+ if (!dev->tuner_addr)
+ dev->tuner_addr = client->addr;
+
dprintk1(1,"attach inform: detected I2C address %x\n", client->addr << 1);
- dev->tuner_addr = client->addr;
- em28xx_set_tuner(-1, client);
+
}
return 0;
@@ -510,19 +532,26 @@ static char *i2c_devs[128] = {
* do_i2c_scan()
* check i2c address range for devices
*/
-static void do_i2c_scan(char *name, struct i2c_client *c)
+void em28xx_do_i2c_scan(struct em28xx *dev)
{
+ u8 i2c_devicelist[128];
unsigned char buf;
int i, rc;
+ memset(i2c_devicelist, 0, ARRAY_SIZE(i2c_devicelist));
+
for (i = 0; i < ARRAY_SIZE(i2c_devs); i++) {
- c->addr = i;
- rc = i2c_master_recv(c, &buf, 0);
+ dev->i2c_client.addr = i;
+ rc = i2c_master_recv(&dev->i2c_client, &buf, 0);
if (rc < 0)
continue;
- printk(KERN_INFO "%s: found i2c device @ 0x%x [%s]\n", name,
- i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
+ i2c_devicelist[i] = i;
+ printk(KERN_INFO "%s: found i2c device @ 0x%x [%s]\n",
+ dev->name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
}
+
+ dev->i2c_hash = em28xx_hash_mem(i2c_devicelist,
+ ARRAY_SIZE(i2c_devicelist), 32);
}
/*
@@ -555,7 +584,7 @@ int em28xx_i2c_register(struct em28xx *dev)
em28xx_i2c_eeprom(dev, dev->eedata, sizeof(dev->eedata));
if (i2c_scan)
- do_i2c_scan(dev->name, &dev->i2c_client);
+ em28xx_do_i2c_scan(dev);
return 0;
}