diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/mxs_i2c.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/i2c/mxs_i2c.c b/drivers/i2c/mxs_i2c.c index de3b194..cc313a6 100644 --- a/drivers/i2c/mxs_i2c.c +++ b/drivers/i2c/mxs_i2c.c @@ -24,9 +24,14 @@ #define MXS_I2C_MAX_TIMEOUT 1000000 +static struct mxs_i2c_regs *mxs_i2c_get_base(struct i2c_adapter *adap) +{ + return (struct mxs_i2c_regs *)MXS_I2C0_BASE; +} + static void mxs_i2c_reset(void) { - struct mxs_i2c_regs *i2c_regs = (struct mxs_i2c_regs *)MXS_I2C0_BASE; + struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL); int ret; int speed = i2c_get_bus_speed(); @@ -48,7 +53,7 @@ static void mxs_i2c_reset(void) static void mxs_i2c_setup_read(uint8_t chip, int len) { - struct mxs_i2c_regs *i2c_regs = (struct mxs_i2c_regs *)MXS_I2C0_BASE; + struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL); writel(I2C_QUEUECMD_RETAIN_CLOCK | I2C_QUEUECMD_PRE_SEND_START | I2C_QUEUECMD_MASTER_MODE | I2C_QUEUECMD_DIRECTION | @@ -67,7 +72,7 @@ static void mxs_i2c_setup_read(uint8_t chip, int len) static int mxs_i2c_write(uchar chip, uint addr, int alen, uchar *buf, int blen, int stop) { - struct mxs_i2c_regs *i2c_regs = (struct mxs_i2c_regs *)MXS_I2C0_BASE; + struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL); uint32_t data, tmp; int i, remain, off; int timeout = MXS_I2C_MAX_TIMEOUT; @@ -124,7 +129,7 @@ static int mxs_i2c_write(uchar chip, uint addr, int alen, static int mxs_i2c_wait_for_ack(void) { - struct mxs_i2c_regs *i2c_regs = (struct mxs_i2c_regs *)MXS_I2C0_BASE; + struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL); uint32_t tmp; int timeout = MXS_I2C_MAX_TIMEOUT; @@ -162,7 +167,7 @@ err: int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len) { - struct mxs_i2c_regs *i2c_regs = (struct mxs_i2c_regs *)MXS_I2C0_BASE; + struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL); uint32_t tmp = 0; int timeout = MXS_I2C_MAX_TIMEOUT; int ret; @@ -237,7 +242,7 @@ int i2c_probe(uchar chip) int i2c_set_bus_speed(unsigned int speed) { - struct mxs_i2c_regs *i2c_regs = (struct mxs_i2c_regs *)MXS_I2C0_BASE; + struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL); /* * The timing derivation algorithm. There is no documentation for this * algorithm available, it was derived by using the scope and fiddling @@ -278,7 +283,7 @@ int i2c_set_bus_speed(unsigned int speed) unsigned int i2c_get_bus_speed(void) { - struct mxs_i2c_regs *i2c_regs = (struct mxs_i2c_regs *)MXS_I2C0_BASE; + struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL); uint32_t clk = mxc_get_clock(MXC_XTAL_CLK); uint32_t timing0; |