soc/intel/common/block/i2c: Ignore disabled I2C devices
If I2C device is disabled:
1. BAR for the device will be 0
2. There is no need to generate ACPI tables for the device
TEST=Verified that if an i2c device is disabled statically in
devicetree or dynamically in mainboard, then coreboot does not die
looking for missing resources.
Change-Id: Id9a790e338a0e6f32c199f5f437203e1525df208
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/20140
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
diff --git a/src/soc/intel/common/block/i2c/i2c.c b/src/soc/intel/common/block/i2c/i2c.c
index fe220b5..6debe88 100644
--- a/src/soc/intel/common/block/i2c/i2c.c
+++ b/src/soc/intel/common/block/i2c/i2c.c
@@ -41,7 +41,7 @@
/* devfn -> dev */
dev = dev_find_slot(0, devfn);
- if (!dev)
+ if (!dev || !dev->enabled)
return (uintptr_t)NULL;
/* dev -> bar0 */
@@ -119,7 +119,12 @@
I2C_SPEED_FAST_PLUS,
I2C_SPEED_HIGH,
};
- int i, bus = lpss_i2c_dev_to_bus(dev);
+ int i, bus;
+
+ if (!dev->enabled)
+ return;
+
+ bus = lpss_i2c_dev_to_bus(dev);
bcfg = i2c_get_soc_cfg(bus, dev);