summaryrefslogtreecommitdiff
path: root/src/drivers/i2c/adm1027
diff options
context:
space:
mode:
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/adm1027
parent57b6786168683e33c1c6c2d8df6a1e8c0246fbde (diff)
i2c mux support
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1809 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/drivers/i2c/adm1027')
-rw-r--r--src/drivers/i2c/adm1027/Config.lb2
-rw-r--r--src/drivers/i2c/adm1027/adm1027.c72
-rw-r--r--src/drivers/i2c/adm1027/chip.h4
3 files changed, 78 insertions, 0 deletions
diff --git a/src/drivers/i2c/adm1027/Config.lb b/src/drivers/i2c/adm1027/Config.lb
new file mode 100644
index 0000000000..395ebabf82
--- /dev/null
+++ b/src/drivers/i2c/adm1027/Config.lb
@@ -0,0 +1,2 @@
+config chip.h
+object adm1027.o
diff --git a/src/drivers/i2c/adm1027/adm1027.c b/src/drivers/i2c/adm1027/adm1027.c
new file mode 100644
index 0000000000..fc8ba732af
--- /dev/null
+++ b/src/drivers/i2c/adm1027/adm1027.c
@@ -0,0 +1,72 @@
+#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 <part/hard_reset.h>
+#include <cpu/x86/msr.h>
+#include "chip.h"
+
+#define ADM1027_REG_CONFIG1 0x40
+#define CFG1_STRT 0x01
+#define CFG1_LOCK 0x02
+#define CFG1_RDY 0x04
+#define CFG1_FSPD 0x08
+#define CFG1_VXI 0x10
+#define CFT1_FSPDIS 0x20
+#define CFG1_TODIS 0x40
+#define CFG1_VCC 0x80
+#define ADM1027_REG_CONFIG2 0x73
+#define ADM1027_REG_CONFIG3 0x78
+
+static void adm1027_enable_monitoring(device_t dev)
+{
+ int result;
+ result = smbus_read_byte(dev, ADM1027_REG_CONFIG1);
+
+ if(!(result & CFG1_RDY) ) {
+ printk_debug("ADM1027: monitoring not ready");
+ return;
+ }
+ result = (result | CFG1_STRT);
+ result = smbus_write_byte(dev, ADM1027_REG_CONFIG1, result);
+
+ result = smbus_read_byte(dev, ADM1027_REG_CONFIG1);
+ if (!(result & CFG1_STRT)) {
+ printk_debug("ADM1027: monitoring would not enable");
+ }
+}
+
+static void adm1027_init(device_t dev)
+{
+ 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
+ adm1027_enable_monitoring(dev);
+ }
+
+ }
+
+}
+static void adm1027_noop(device_t dummy)
+{
+}
+
+static struct device_operations adm1027_operations = {
+ .read_resources = adm1027_noop,
+ .set_resources = adm1027_noop,
+ .enable_resources = adm1027_noop,
+ .init = adm1027_init,
+};
+
+static void enable_dev(struct device *dev)
+{
+ dev->ops = &adm1027_operations;
+}
+
+struct chip_operations drivers_i2c_adm1027_ops = {
+ CHIP_NAME("adm1027")
+ .enable_dev = enable_dev,
+};
diff --git a/src/drivers/i2c/adm1027/chip.h b/src/drivers/i2c/adm1027/chip.h
new file mode 100644
index 0000000000..94c4e888e9
--- /dev/null
+++ b/src/drivers/i2c/adm1027/chip.h
@@ -0,0 +1,4 @@
+extern struct chip_operations drivers_i2c_adm1027_ops;
+
+struct drivers_i2c_adm1027_config {
+};