From 7213d0f513c2a0dbcacbf0a811d01322cd82d25b Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Fri, 3 Dec 2004 03:39:04 +0000 Subject: i2c mux support git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1809 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/drivers/i2c/adm1027/Config.lb | 2 ++ src/drivers/i2c/adm1027/adm1027.c | 72 +++++++++++++++++++++++++++++++++++++++ src/drivers/i2c/adm1027/chip.h | 4 +++ 3 files changed, 78 insertions(+) create mode 100644 src/drivers/i2c/adm1027/Config.lb create mode 100644 src/drivers/i2c/adm1027/adm1027.c create mode 100644 src/drivers/i2c/adm1027/chip.h (limited to 'src/drivers/i2c/adm1027') 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 +#include +#include +#include +#include +#include +#include +#include +#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 { +}; -- cgit v1.2.3