diff options
Diffstat (limited to 'src/drivers/i2c/i2cmux2')
-rw-r--r-- | src/drivers/i2c/i2cmux2/Config.lb | 2 | ||||
-rw-r--r-- | src/drivers/i2c/i2cmux2/chip.h | 4 | ||||
-rw-r--r-- | src/drivers/i2c/i2cmux2/i2cmux2.c | 43 |
3 files changed, 49 insertions, 0 deletions
diff --git a/src/drivers/i2c/i2cmux2/Config.lb b/src/drivers/i2c/i2cmux2/Config.lb new file mode 100644 index 0000000000..a0d83bab2c --- /dev/null +++ b/src/drivers/i2c/i2cmux2/Config.lb @@ -0,0 +1,2 @@ +config chip.h +object i2cmux2.o diff --git a/src/drivers/i2c/i2cmux2/chip.h b/src/drivers/i2c/i2cmux2/chip.h new file mode 100644 index 0000000000..f6fd35f796 --- /dev/null +++ b/src/drivers/i2c/i2cmux2/chip.h @@ -0,0 +1,4 @@ +extern struct chip_operations drivers_i2c_i2cmux2_ops; + +struct drivers_i2c_i2cmux2_config { +}; diff --git a/src/drivers/i2c/i2cmux2/i2cmux2.c b/src/drivers/i2c/i2cmux2/i2cmux2.c new file mode 100644 index 0000000000..30656eafca --- /dev/null +++ b/src/drivers/i2c/i2cmux2/i2cmux2.c @@ -0,0 +1,43 @@ +#include <console/console.h> +#include <device/device.h> +#include <device/smbus.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +#include <cpu/x86/msr.h> +#include "chip.h" + +static void i2cmux2_set_link(device_t dev, unsigned int link) +{ + if (dev->enabled && dev->path.type == DEVICE_PATH_I2C) + { + if(ops_smbus_bus(get_pbus_smbus(dev))) { + smbus_send_byte(dev, link); // output value + } + + } + +} +static void i2cmux2_noop(device_t dummy) +{ +} + +static struct device_operations i2cmux2_operations = { + .read_resources = i2cmux2_noop, + .set_resources = i2cmux2_noop, + .enable_resources = i2cmux2_noop, + .init = i2cmux2_noop, + .scan_bus = scan_static_bus, + .set_link = i2cmux2_set_link, +}; + +static void enable_dev(struct device *dev) +{ + if(dev->links>0) + dev->ops = &i2cmux2_operations; +} + +struct chip_operations drivers_i2c_i2cmux2_ops = { + CHIP_NAME("i2cmux2") + .enable_dev = enable_dev, +}; |