diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-pnx.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-pnx.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c index 9532dee6b58..a97e3fec814 100644 --- a/drivers/i2c/busses/i2c-pnx.c +++ b/drivers/i2c/busses/i2c-pnx.c @@ -22,6 +22,7 @@ #include <linux/io.h> #include <linux/err.h> #include <linux/clk.h> +#include <linux/slab.h> #include <mach/hardware.h> #include <mach/i2c.h> @@ -172,6 +173,9 @@ static int i2c_pnx_master_xmit(struct i2c_pnx_algo_data *alg_data) /* We still have something to talk about... */ val = *alg_data->mif.buf++; + if (alg_data->mif.len == 1) + val |= stop_bit; + alg_data->mif.len--; iowrite32(val, I2C_REG_TX(alg_data)); @@ -245,6 +249,9 @@ static int i2c_pnx_master_rcv(struct i2c_pnx_algo_data *alg_data) __func__); if (alg_data->mif.len == 1) { + /* Last byte, do not acknowledge next rcv. */ + val |= stop_bit; + /* * Enable interrupt RFDAIE (data in Rx fifo), * and disable DRMIE (need data for Tx) @@ -632,6 +639,8 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev) */ tmp = ((freq / 1000) / I2C_PNX_SPEED_KHZ) / 2 - 2; + if (tmp > 0x3FF) + tmp = 0x3FF; iowrite32(tmp, I2C_REG_CKH(alg_data)); iowrite32(tmp, I2C_REG_CKL(alg_data)); |