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authorYinghai Lu <yinghailu@gmail.com>2004-12-03 03:39:04 +0000
committerYinghai Lu <yinghailu@gmail.com>2004-12-03 03:39:04 +0000
commit7213d0f513c2a0dbcacbf0a811d01322cd82d25b (patch)
treef40eb3d7e577af50edbc10f0df921fd34de9e075 /src/drivers/i2c/lm63
parent57b6786168683e33c1c6c2d8df6a1e8c0246fbde (diff)
downloadcoreboot-7213d0f513c2a0dbcacbf0a811d01322cd82d25b.tar.xz
i2c mux support
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1809 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/drivers/i2c/lm63')
-rw-r--r--src/drivers/i2c/lm63/Config.lb2
-rw-r--r--src/drivers/i2c/lm63/chip.h4
-rw-r--r--src/drivers/i2c/lm63/lm63.c46
3 files changed, 52 insertions, 0 deletions
diff --git a/src/drivers/i2c/lm63/Config.lb b/src/drivers/i2c/lm63/Config.lb
new file mode 100644
index 0000000000..959c7afa4c
--- /dev/null
+++ b/src/drivers/i2c/lm63/Config.lb
@@ -0,0 +1,2 @@
+config chip.h
+object lm63.o
diff --git a/src/drivers/i2c/lm63/chip.h b/src/drivers/i2c/lm63/chip.h
new file mode 100644
index 0000000000..5c558464f3
--- /dev/null
+++ b/src/drivers/i2c/lm63/chip.h
@@ -0,0 +1,4 @@
+extern struct chip_operations drivers_i2c_lm63_ops;
+
+struct drivers_i2c_lm63_config {
+};
diff --git a/src/drivers/i2c/lm63/lm63.c b/src/drivers/i2c/lm63/lm63.c
new file mode 100644
index 0000000000..01abadc420
--- /dev/null
+++ b/src/drivers/i2c/lm63/lm63.c
@@ -0,0 +1,46 @@
+#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 lm63_init(device_t dev)
+{
+ int result;
+ if (dev->enabled && dev->path.type == DEVICE_PATH_I2C)
+ {
+ if(ops_smbus_bus(get_pbus_smbus(dev))) {
+ if( dev->bus->dev->path.type == DEVICE_PATH_I2C) smbus_set_link(dev); // it is under mux
+ result = smbus_read_byte(dev, 0x03);
+// result &= ~0x04;
+ result |= 0x04;
+ smbus_write_byte(dev, 0x03, result & 0xff); // config lm63
+ }
+
+ }
+
+}
+static void lm63_noop(device_t dummy)
+{
+}
+
+static struct device_operations lm63_operations = {
+ .read_resources = lm63_noop,
+ .set_resources = lm63_noop,
+ .enable_resources = lm63_noop,
+ .init = lm63_init,
+};
+
+static void enable_dev(struct device *dev)
+{
+ dev->ops = &lm63_operations;
+}
+
+struct chip_operations drivers_i2c_lm63_ops = {
+ CHIP_NAME("lm63")
+ .enable_dev = enable_dev,
+};