diff options
Diffstat (limited to 'drivers/staging/cx25821/cx25821-i2c.c')
| -rw-r--r-- | drivers/staging/cx25821/cx25821-i2c.c | 72 |
1 files changed, 36 insertions, 36 deletions
diff --git a/drivers/staging/cx25821/cx25821-i2c.c b/drivers/staging/cx25821/cx25821-i2c.c index 16303f80d4f..0667b3f8eb9 100644 --- a/drivers/staging/cx25821/cx25821-i2c.c +++ b/drivers/staging/cx25821/cx25821-i2c.c @@ -88,9 +88,9 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap, const struct i2c_msg *msg dprintk(1, "%s(msg->len=%d)\n", __func__, msg->len); /* Deal with i2c probe functions with zero payload */ - if (msg->len == 0) + if (msg->len == 0) { - cx_write(bus->reg_addr, msg->addr << 25); + cx_write(bus->reg_addr, msg->addr << 25); cx_write(bus->reg_ctrl, bus->i2c_period | (1 << 2)); if (!i2c_wait_done(i2c_adap)) @@ -106,7 +106,7 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap, const struct i2c_msg *msg /* dev, reg + first byte */ addr = (msg->addr << 25) | msg->buf[0]; wdata = msg->buf[0]; - + ctrl = bus->i2c_period | (1 << 12) | (1 << 2); if (msg->len > 1) @@ -125,7 +125,7 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap, const struct i2c_msg *msg if (retval == 0) goto eio; - if (i2c_debug) + if (i2c_debug) { if (!(ctrl & I2C_NOSTOP)) printk(" >\n"); @@ -152,14 +152,14 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap, const struct i2c_msg *msg if (retval == 0) goto eio; - if (i2c_debug) + if (i2c_debug) { dprintk(1, " %02x", msg->buf[cnt]); if (!(ctrl & I2C_NOSTOP)) dprintk(1, " >\n"); } } - + return msg->len; eio: @@ -244,18 +244,18 @@ static int i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num) dprintk(1, "%s(num = %d)\n", __func__, num); - for (i = 0 ; i < num; i++) + for (i = 0 ; i < num; i++) { dprintk(1, "%s(num = %d) addr = 0x%02x len = 0x%x\n", __func__, num, msgs[i].addr, msgs[i].len); - if (msgs[i].flags & I2C_M_RD) + if (msgs[i].flags & I2C_M_RD) { /* read */ retval = i2c_readbytes(i2c_adap, &msgs[i], 0); - } + } else if (i + 1 < num && (msgs[i + 1].flags & I2C_M_RD) && - msgs[i].addr == msgs[i + 1].addr) + msgs[i].addr == msgs[i + 1].addr) { /* write then read from same address */ retval = i2c_sendbytes(i2c_adap, &msgs[i], msgs[i + 1].len); @@ -264,13 +264,13 @@ static int i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num) goto err; i++; retval = i2c_readbytes(i2c_adap, &msgs[i], 1); - } - else + } + else { /* write */ retval = i2c_sendbytes(i2c_adap, &msgs[i], 0); } - + if (retval < 0) goto err; } @@ -283,9 +283,9 @@ static int i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num) static u32 cx25821_functionality(struct i2c_adapter *adap) { - return I2C_FUNC_SMBUS_EMUL | + return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_I2C | - I2C_FUNC_SMBUS_WORD_DATA | + I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_READ_WORD_DATA | I2C_FUNC_SMBUS_WRITE_WORD_DATA; } @@ -334,7 +334,7 @@ int cx25821_i2c_register(struct cx25821_i2c *bus) //set up the I2c bus->i2c_client.addr = (0x88>>1); - + return bus->i2c_rc; } @@ -375,19 +375,19 @@ int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value) int v = 0; u8 addr[2] = {0, 0}; u8 buf[4] = {0,0,0,0}; - + struct i2c_msg msgs[2]={ - { - .addr = client->addr, - .flags = 0, - .len = 2, - .buf = addr, - }, { - .addr = client->addr, - .flags = I2C_M_RD, - .len = 4, - .buf = buf, - } + { + .addr = client->addr, + .flags = 0, + .len = 2, + .buf = addr, + }, { + .addr = client->addr, + .flags = I2C_M_RD, + .len = 4, + .buf = buf, + } }; @@ -401,23 +401,23 @@ int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value) v = (buf[3]<<24) | (buf[2]<<16) | (buf[1]<<8) | buf[0]; *value = v; - return v; + return v; } int cx25821_i2c_write(struct cx25821_i2c *bus, u16 reg_addr, int value) { struct i2c_client *client = &bus->i2c_client; - int retval = 0; + int retval = 0; u8 buf[6] = {0, 0, 0, 0, 0, 0}; struct i2c_msg msgs[1]={ - { - .addr = client->addr, - .flags = 0, - .len = 6, - .buf = buf, - } + { + .addr = client->addr, + .flags = 0, + .len = 6, + .buf = buf, + } }; |