diff options
Diffstat (limited to 'drivers/i2c/mxc_i2c.c')
| -rw-r--r-- | drivers/i2c/mxc_i2c.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index cbb0fffb8..44a04b57d 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -201,10 +201,9 @@ static int tx_byte(struct mxc_i2c_regs *i2c_regs, u8 byte) /* * Stop I2C transaction */ -void i2c_imx_stop(void) +static void i2c_imx_stop(struct mxc_i2c_regs *i2c_regs) { int ret; - struct mxc_i2c_regs *i2c_regs = (struct mxc_i2c_regs *)I2C_BASE; unsigned int temp = readb(&i2c_regs->i2cr); temp &= ~(I2CR_MSTA | I2CR_MTX); @@ -271,7 +270,7 @@ static int i2c_init_transfer(struct mxc_i2c_regs *i2c_regs, ret = i2c_init_transfer_(i2c_regs, chip, addr, alen); if (ret >= 0) return 0; - i2c_imx_stop(); + i2c_imx_stop(i2c_regs); if (ret == -ENODEV) return ret; @@ -305,7 +304,7 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len) ret = tx_byte(i2c_regs, (chip << 1) | 1); if (ret < 0) { - i2c_imx_stop(); + i2c_imx_stop(i2c_regs); return ret; } @@ -322,7 +321,7 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len) for (i = 0; i < len; i++) { ret = wait_for_sr_state(i2c_regs, ST_IIF); if (ret < 0) { - i2c_imx_stop(); + i2c_imx_stop(i2c_regs); return ret; } @@ -331,7 +330,7 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len) * controller from generating another clock cycle */ if (i == (len - 1)) { - i2c_imx_stop(); + i2c_imx_stop(i2c_regs); } else if (i == (len - 2)) { temp = readb(&i2c_regs->i2cr); temp |= I2CR_TX_NO_AK; @@ -340,9 +339,7 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len) writeb(0, &i2c_regs->i2sr); buf[i] = readb(&i2c_regs->i2dr); } - - i2c_imx_stop(); - + i2c_imx_stop(i2c_regs); return 0; } @@ -364,9 +361,7 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len) if (ret < 0) break; } - - i2c_imx_stop(); - + i2c_imx_stop(i2c_regs); return ret; } |