i2c mux support

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

src/drivers/generic/debug/debug_dev.c

@@ -1,5 +1,6 @@
 #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>
@@ -46,7 +47,7 @@ static void print_pci_regs_all(void)
 				if(!dev->enabled) {
 					continue;
 				}
-			        printk_debug("\n%02x:%02x:%02x aka %s",i,j,k, dev_path(dev));
+				printk_debug("\n%02x:%02x:%02x aka %s",i,j,k, dev_path(dev));
 				print_pci_regs(dev);
 			}
 		}
@@ -56,28 +57,72 @@ static void print_pci_regs_all(void)
 
 static void print_msr()
 {
-        msr_t msr;
-        unsigned index;
-        unsigned eax, ebx, ecx, edx;
-        index = 0x80000007;
-        printk_debug("calling cpuid 0x%08x\n", index);
-        asm volatile(
-                "cpuid"
-                : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
-                : "a" (index)
-                );
-        printk_debug("cpuid[%08x]: %08x %08x %08x %08x\n",
-                index, eax, ebx, ecx, edx);
-        if (edx & (3 << 1)) {
-                index = 0xC0010042;
-                printk_debug("Reading msr: 0x%08x\n", index);
-                msr = rdmsr(index);
-                printk_debug("msr[0x%08x]: 0x%08x%08x\n",
-                        index, msr.hi, msr.hi);
-        }
+	msr_t msr;
+	unsigned index;
+	unsigned eax, ebx, ecx, edx;
+	index = 0x80000007;
+	printk_debug("calling cpuid 0x%08x\n", index);
+	asm volatile(
+		"cpuid"
+		: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
+		: "a" (index)
+		);
+	printk_debug("cpuid[%08x]: %08x %08x %08x %08x\n",
+		index, eax, ebx, ecx, edx);
+	if (edx & (3 << 1)) {
+		index = 0xC0010042;
+		printk_debug("Reading msr: 0x%08x\n", index);
+		msr = rdmsr(index);
+		printk_debug("msr[0x%08x]: 0x%08x%08x\n",
+			index, msr.hi, msr.hi);
+	}
 
 }
- 
+static void print_smbus_regs(struct device *dev)
+{               
+	int j;
+	printk_debug("smbus:  %s[%d]->",  dev_path(dev->bus->dev), dev->bus->link );
+	printk_debug("%s",  dev_path(dev));
+	for(j = 0; j < 256; j++) {
+		int status;
+		unsigned char byte;
+		if ((j & 0xf) == 0) {
+			printk_debug("\r\n%02x: ", j);
+		}
+		status = smbus_read_byte(dev, j);
+		if (status < 0) {
+			printk_debug("bad device status= %08x\r\n", status);
+			break;
+		}
+		byte = status & 0xff;
+		printk_debug("%02x ", byte);
+	}
+	printk_debug("\r\n");
+}
+
+static void print_smbus_regs_all(struct device *dev)
+{
+	struct device *child;
+	int i;
+	if (dev->enabled && dev->path.type == DEVICE_PATH_I2C)
+	{
+		// Here don't need to call smbus_set_link, because we scan it from top to down
+		if( dev->bus->dev->path.type == DEVICE_PATH_I2C) { // it's under i2c MUX so set mux at first
+			if(ops_smbus_bus(get_pbus_smbus(dev->bus->dev))) {
+				if(dev->bus->dev->ops && dev->bus->dev->ops->set_link) 
+					dev->bus->dev->ops->set_link(dev->bus->dev, dev->bus->link);
+			}
+		}
+		
+		if(ops_smbus_bus(get_pbus_smbus(dev))) print_smbus_regs(dev);	
+	}
+
+	for(i=0; i< dev->links; i++) {
+		for (child = dev->link[i].children; child; child = child->sibling) {
+			print_smbus_regs_all(child);
+        	}
+	}
+}
 static void debug_init(device_t dev)
 {
 	device_t parent;
@@ -103,6 +148,9 @@ static void debug_init(device_t dev)
 	case 3:
 		print_msr();
 		break;
+	case 4: 
+		print_smbus_regs_all(&dev_root);
+		break;
 	}
 }
 

src/drivers/i2c/adm1026/Config.lb

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

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, 
+};

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

@@ -0,0 +1,2 @@
+config chip.h
+object adm1027.o

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, 
+};

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

@@ -0,0 +1,2 @@
+config chip.h
+object i2cmux.o

src/drivers/i2c/i2cmux/chip.h

@@ -0,0 +1,4 @@
+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

@@ -0,0 +1,2 @@
+config chip.h
+object lm63.o

src/drivers/i2c/lm63/chip.h

@@ -0,0 +1,4 @@
+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, 
+};