I2C: mv_i2c: add multi bus support
Add the ability to support multiple i2c bus for mv_i2c Acked-by: Heiko Schocher <hs@denx.de> Acked-by: Prafulla Wadaskar <prafulla@marvell.com> Signed-off-by: Lei Wen <leiwen@marvell.com>
This commit is contained in:
parent
aa3b168e31
commit
adb00bb6a0
|
@ -66,7 +66,35 @@ struct mv_i2c {
|
|||
u32 isar;
|
||||
};
|
||||
|
||||
static struct mv_i2c *base = (struct mv_i2c *)CONFIG_MV_I2C_REG;
|
||||
static struct mv_i2c *base;
|
||||
#ifdef CONFIG_I2C_MULTI_BUS
|
||||
static u32 i2c_regs[CONFIG_MV_I2C_NUM] = CONFIG_MV_I2C_REG;
|
||||
static unsigned int bus_initialized[CONFIG_MV_I2C_NUM];
|
||||
static unsigned int current_bus;
|
||||
|
||||
int i2c_set_bus_num(unsigned int bus)
|
||||
{
|
||||
if ((bus < 0) || (bus >= CONFIG_MV_I2C_NUM)) {
|
||||
printf("Bad bus: %d\n", bus);
|
||||
return -1;
|
||||
}
|
||||
|
||||
base = (struct mv_i2c *)i2c_regs[bus];
|
||||
current_bus = bus;
|
||||
|
||||
if (!bus_initialized[current_bus]) {
|
||||
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
|
||||
bus_initialized[current_bus] = 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
unsigned int i2c_get_bus_num(void)
|
||||
{
|
||||
return current_bus;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* i2c_reset: - reset the host controller
|
||||
|
@ -235,6 +263,12 @@ i2c_transfer_finish:
|
|||
/* ------------------------------------------------------------------------ */
|
||||
void i2c_init(int speed, int slaveaddr)
|
||||
{
|
||||
#ifdef CONFIG_I2C_MULTI_BUS
|
||||
base = (struct mv_i2c *)i2c_regs[current_bus];
|
||||
#else
|
||||
base = (struct mv_i2c *)CONFIG_MV_I2C_REG;
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SYS_I2C_INIT_BOARD
|
||||
u32 icr;
|
||||
/*
|
||||
|
|
Loading…
Reference in a new issue