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| author | Troy Kisky <troy.kisky@boundarydevices.com> | 2012-07-19 08:18:17 +0000 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2012-07-31 07:55:13 +0200 |
| commit | 27a5da02c094c9b73c01aa699f13591b824d5436 (patch) | |
| tree | 554b346ad9a3821ed73f5befaf9c7ee8db10fcbf /drivers/i2c/mxc_i2c.c | |
| parent | a7f1a0051078052cb81ba1ff5985b908f39cefd5 (diff) | |
| download | u-boot-imx-27a5da02c094c9b73c01aa699f13591b824d5436.zip u-boot-imx-27a5da02c094c9b73c01aa699f13591b824d5436.tar.gz u-boot-imx-27a5da02c094c9b73c01aa699f13591b824d5436.tar.bz2 | |
mxc_i2c: add i2c_regs argument to i2c_imx_stop
This is prep work for CONFIG_I2C_MULTI_BUS.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>
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 cbb0fff..44a04b5 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; } |