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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.c49
1 files changed, 31 insertions, 18 deletions
diff --git a/drivers/media/video/em28xx/em28xx-i2c.c b/drivers/media/video/em28xx/em28xx-i2c.c
index 2360c61..d69f0ef 100644
--- a/drivers/media/video/em28xx/em28xx-i2c.c
+++ b/drivers/media/video/em28xx/em28xx-i2c.c
@@ -250,7 +250,7 @@ static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap,
(msgs[i].flags & I2C_M_RD) ? "read" : "write",
i == num - 1 ? "stop" : "nonstop", addr, msgs[i].len);
if (!msgs[i].len) { /* no len: check only for device presence */
- if (dev->is_em2800)
+ if (dev->board.is_em2800)
rc = em2800_i2c_check_for_device(dev, addr);
else
rc = em28xx_i2c_check_for_device(dev, addr);
@@ -261,7 +261,7 @@ static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap,
} else if (msgs[i].flags & I2C_M_RD) {
/* read bytes */
- if (dev->is_em2800)
+ if (dev->board.is_em2800)
rc = em2800_i2c_recv_bytes(dev, addr,
msgs[i].buf,
msgs[i].len);
@@ -279,7 +279,7 @@ static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap,
for (byte = 0; byte < msgs[i].len; byte++)
printk(" %02x", msgs[i].buf[byte]);
}
- if (dev->is_em2800)
+ if (dev->board.is_em2800)
rc = em2800_i2c_send_bytes(dev, addr,
msgs[i].buf,
msgs[i].len);
@@ -332,6 +332,17 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len)
struct em28xx_eeprom *em_eeprom = (void *)eedata;
int i, err, size = len, block;
+ if (dev->chip_id == CHIP_ID_EM2874) {
+ /* Empia switched to a 16-bit addressable eeprom in newer
+ devices. While we could certainly write a routine to read
+ the eeprom, there is nothing of use in there that cannot be
+ accessed through registers, and there is the risk that we
+ could corrupt the eeprom (since a 16-bit read call is
+ interpreted as a write call by 8-bit eeproms).
+ */
+ return 0;
+ }
+
dev->i2c_client.addr = 0xa0 >> 1;
/* Check if board has eeprom */
@@ -377,47 +388,49 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len)
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);
+ printk(KERN_INFO "%s: EEPROM ID= 0x%08x, EEPROM hash = 0x%08lx\n",
+ dev->name, em_eeprom->id, dev->hash);
+
+ printk(KERN_INFO "%s: EEPROM info:\n", dev->name);
switch (em_eeprom->chip_conf >> 4 & 0x3) {
case 0:
- printk(KERN_INFO "No audio on board.\n");
+ printk(KERN_INFO "%s:\tNo audio on board.\n", dev->name);
break;
case 1:
- printk(KERN_INFO "AC97 audio (5 sample rates)\n");
+ printk(KERN_INFO "%s:\tAC97 audio (5 sample rates)\n",
+ dev->name);
break;
case 2:
- printk(KERN_INFO "I2S audio, sample rate=32k\n");
+ printk(KERN_INFO "%s:\tI2S audio, sample rate=32k\n", dev->name);
break;
case 3:
- printk(KERN_INFO "I2S audio, 3 sample rates\n");
+ printk(KERN_INFO "%s:\tI2S audio, 3 sample rates\n", dev->name);
break;
}
if (em_eeprom->chip_conf & 1 << 3)
- printk(KERN_INFO "USB Remote wakeup capable\n");
+ printk(KERN_INFO "%s:\tUSB Remote wakeup capable\n", dev->name);
if (em_eeprom->chip_conf & 1 << 2)
- printk(KERN_INFO "USB Self power capable\n");
+ printk(KERN_INFO "%s:\tUSB Self power capable\n", dev->name);
switch (em_eeprom->chip_conf & 0x3) {
case 0:
- printk(KERN_INFO "500mA max power\n");
+ printk(KERN_INFO "%s:\t500mA max power\n", dev->name);
break;
case 1:
- printk(KERN_INFO "400mA max power\n");
+ printk(KERN_INFO "%s:\t400mA max power\n", dev->name);
break;
case 2:
- printk(KERN_INFO "300mA max power\n");
+ printk(KERN_INFO "%s:\t300mA max power\n", dev->name);
break;
case 3:
- printk(KERN_INFO "200mA max power\n");
+ printk(KERN_INFO "%s:\t200mA max power\n", dev->name);
break;
}
- printk(KERN_INFO "Table at 0x%02x, strings=0x%04x, 0x%04x, 0x%04x\n",
+ printk(KERN_INFO "%s:\tTable at 0x%02x, strings=0x%04x, 0x%04x, 0x%04x\n",
+ dev->name,
em_eeprom->string_idx_table,
em_eeprom->string1,
em_eeprom->string2,
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