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| author | Rajeshwari Shinde <rajeshwari.s@samsung.com> | 2012-07-23 21:23:54 +0000 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2012-07-31 08:03:03 +0200 |
| commit | 178239de194a0e84d07b8e48fb74cb156f654d75 (patch) | |
| tree | 35f2d7f837f946f6a274fdcfad0c5b0c66912924 /drivers/i2c | |
| parent | ab7e52bb240c15ad4426cad64396589beadc9f04 (diff) | |
| download | u-boot-imx-178239de194a0e84d07b8e48fb74cb156f654d75.zip u-boot-imx-178239de194a0e84d07b8e48fb74cb156f654d75.tar.gz u-boot-imx-178239de194a0e84d07b8e48fb74cb156f654d75.tar.bz2 | |
I2C: Add support for Multi channel
This adds multiple i2c channel support for I2C.
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/s3c24x0_i2c.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/i2c/s3c24x0_i2c.c b/drivers/i2c/s3c24x0_i2c.c index 26c0755..9bc4c7f 100644 --- a/drivers/i2c/s3c24x0_i2c.c +++ b/drivers/i2c/s3c24x0_i2c.c @@ -158,6 +158,33 @@ static void i2c_ch_init(struct s3c24x0_i2c *i2c, int speed, int slaveadd) writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->iicstat); } +/* + * MULTI BUS I2C support + */ + +#ifdef CONFIG_I2C_MULTI_BUS +int i2c_set_bus_num(unsigned int bus) +{ + struct s3c24x0_i2c *i2c; + + if ((bus < 0) || (bus >= CONFIG_MAX_I2C_NUM)) { + debug("Bad bus: %d\n", bus); + return -1; + } + + g_current_bus = bus; + i2c = get_base_i2c(); + i2c_ch_init(i2c, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); + + return 0; +} + +unsigned int i2c_get_bus_num(void) +{ + return g_current_bus; +} +#endif + void i2c_init(int speed, int slaveadd) { struct s3c24x0_i2c *i2c; |