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author | Yinghai Lu <yinghailu@gmail.com> | 2004-12-03 03:39:04 +0000 |
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committer | Yinghai Lu <yinghailu@gmail.com> | 2004-12-03 03:39:04 +0000 |
commit | 7213d0f513c2a0dbcacbf0a811d01322cd82d25b (patch) | |
tree | f40eb3d7e577af50edbc10f0df921fd34de9e075 /src/drivers/i2c/adm1026/adm1026.c | |
parent | 57b6786168683e33c1c6c2d8df6a1e8c0246fbde (diff) | |
download | coreboot-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/adm1026/adm1026.c')
-rw-r--r-- | src/drivers/i2c/adm1026/adm1026.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/drivers/i2c/adm1026/adm1026.c b/src/drivers/i2c/adm1026/adm1026.c new file mode 100644 index 0000000000..f1d61b4039 --- /dev/null +++ b/src/drivers/i2c/adm1026/adm1026.c @@ -0,0 +1,68 @@ +#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 ADM1026_DEVICE 0x2c /* 0x2e or 0x2d */ +#define ADM1026_REG_CONFIG1 0x00 +#define CFG1_MONITOR 0x01 +#define CFG1_INT_ENABLE 0x02 +#define CFG1_INT_CLEAR 0x04 +#define CFG1_AIN8_9 0x08 +#define CFG1_THERM_HOT 0x10 +#define CFT1_DAC_AFC 0x20 +#define CFG1_PWM_AFC 0x40 +#define CFG1_RESET 0x80 +#define ADM1026_REG_CONFIG2 0x01 +#define ADM1026_REG_CONFIG3 0x07 + +static void adm1026_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 + adm1026_enable_monitoring(dev); + } + + } + +} +static void adm1026_enable_monitoring(device_t dev) +{ + int result; + result = smbus_read_byte(dev, ADM1026_REG_CONFIG1); + + result = (result | CFG1_MONITOR) & ~(CFG1_INT_CLEAR | CFG1_RESET); + result = smbus_write_byte(dev, ADM1026_REG_CONFIG1, result); + + result = smbus_read_byte(dev, ADM1026_REG_CONFIG1); + if (!(result & CFG1_MONITOR)) { + printk_debug("ADM1026: monitoring would not enable"); + } +} +static void adm1026_noop(device_t dummy) +{ +} + +static struct device_operations adm1026_operations = { + .read_resources = adm1026_noop, + .set_resources = adm1026_noop, + .enable_resources = adm1026_noop, + .init = adm1026_init, +}; + +static void enable_dev(struct device *dev) +{ + dev->ops = &adm1026_operations; +} + +struct chip_operations drivers_i2c_adm1026_ops = { + CHIP_NAME("adm1026") + .enable_dev = enable_dev, +}; |