diff options
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-i2c.c')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-i2c.c | 81 |
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 e3a4aa7a9df4..cacd04d46e99 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; } |
