i2c mux support

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1809 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/drivers/i2c/adm1026/Config.lb

@@ -0,0 +1,2 @@
+config chip.h
+object adm1026.o

src/drivers/i2c/adm1026/adm1026.c

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+#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, 
+};

src/drivers/i2c/adm1026/chip.h

@@ -0,0 +1,4 @@
+extern struct chip_operations drivers_i2c_adm1026_ops;
+
+struct drivers_i2c_adm1026_config {
+};

src/drivers/i2c/adm1027/Config.lb

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+config chip.h
+object adm1027.o

src/drivers/i2c/adm1027/adm1027.c

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+#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, 
+};

src/drivers/i2c/adm1027/chip.h

@@ -0,0 +1,4 @@
+extern struct chip_operations drivers_i2c_adm1027_ops;
+
+struct drivers_i2c_adm1027_config {
+};

src/drivers/i2c/i2cmux/Config.lb

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+config chip.h
+object i2cmux.o

src/drivers/i2c/i2cmux/chip.h

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+extern struct chip_operations drivers_i2c_i2cmux_ops;
+
+struct drivers_i2c_i2cmux_config {
+};

src/drivers/i2c/i2cmux/i2cmux.c

@@ -0,0 +1,44 @@
+#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 i2cmux_set_link(device_t dev, unsigned int link)
+{
+	if (dev->enabled && dev->path.type == DEVICE_PATH_I2C)
+	{
+		if(ops_smbus_bus(get_pbus_smbus(dev))) {
+			smbus_write_byte(dev, 0x01, 1<<link); // output value
+			smbus_write_byte(dev, 0x03, 0); // all output
+		}
+		
+	}
+
+}
+static void i2cmux_noop(device_t dummy)
+{
+}
+
+static struct device_operations i2cmux_operations = {
+        .read_resources   = i2cmux_noop,
+        .set_resources    = i2cmux_noop,
+        .enable_resources = i2cmux_noop,
+        .init             = i2cmux_noop,
+	.scan_bus         = scan_static_bus,
+	.set_link	  = i2cmux_set_link,
+};
+
+static void enable_dev(struct device *dev)
+{
+	if(dev->links>0)
+		dev->ops = &i2cmux_operations;
+}
+
+struct chip_operations drivers_i2c_i2cmux_ops = {
+	CHIP_NAME("i2cmux")
+	.enable_dev = enable_dev, 
+};

src/drivers/i2c/lm63/Config.lb

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+config chip.h
+object lm63.o

src/drivers/i2c/lm63/chip.h

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+extern struct chip_operations drivers_i2c_lm63_ops;
+
+struct drivers_i2c_lm63_config {
+};

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, 
+};