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bbswitch-g14
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Convert printk to pr_... macros

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For pr_debug outputs on _DSM results, use "make DEBUG=1"
master
Peter Wu 12 years ago
parent aeff596524
commit b8a6029692
2 changed files with 33 additions and 35 deletions
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4
Makefile
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@ -5,6 +5,10 @@ KVERSION := $(shell uname -r)
KDIR := /lib/modules/$(KVERSION)/build KDIR := /lib/modules/$(KVERSION)/build
PWD := "$$(pwd)" PWD := "$$(pwd)"
ifdef DEBUG
CFLAGS_$(obj-m) := -DDEBUG
endif
default: default:
$(MAKE) -C $(KDIR) M=$(PWD) modules $(MAKE) -C $(KDIR) M=$(PWD) modules

64
bbswitch.c
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@ -9,6 +9,8 @@
* Get status * Get status
* # cat /proc/acpi/bbswitch * # cat /proc/acpi/bbswitch
*/ */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/pci.h> #include <linux/pci.h>
#include <linux/acpi.h> #include <linux/acpi.h>
#include <linux/module.h> #include <linux/module.h>
@ -114,8 +116,7 @@ static int acpi_call_dsm(acpi_handle handle, const char muid[16], int revid,
char muid_str[5 * 16]; char muid_str[5 * 16];
char args_str[5 * 4]; char args_str[5 * 4];
printk(KERN_WARNING "bbswitch: failed to evaluate _DSM {%s} 0x%X 0x%X" pr_warn("failed to evaluate _DSM {%s} 0x%X 0x%X {%s}: %s\n",
" {%s}: %s\n",
buffer_to_string(muid, 16, muid_str), revid, func, buffer_to_string(muid, 16, muid_str), revid, func,
buffer_to_string(args, 4, args_str), acpi_format_exception(err)); buffer_to_string(args, 4, args_str), acpi_format_exception(err));
return err; return err;
@ -134,8 +135,8 @@ static int acpi_call_dsm(acpi_handle handle, const char muid[16], int revid,
*result |= (obj->buffer.pointer[3] << 24); *result |= (obj->buffer.pointer[3] << 24);
} }
} else { } else {
printk(KERN_WARNING "bbswitch: _DSM call yields an unsupported result" pr_warn("_DSM call yields an unsupported result type: %#x\n",
" type: %X\n", obj->type); obj->type);
} }
kfree(output.pointer); kfree(output.pointer);
@ -165,8 +166,7 @@ static int bbswitch_optimus_dsm(void) {
// failure // failure
return 1; return 1;
} }
printk(KERN_DEBUG "bbswitch: Result of Optimus _DSM call: %08X\n", pr_debug("Result of Optimus _DSM call: %08X\n", result);
result);
} }
return 0; return 0;
} }
@ -181,8 +181,7 @@ static int bbswitch_acpi_off(void) {
// failure // failure
return 1; return 1;
} }
printk(KERN_DEBUG "bbswitch: Result of _DSM call for OFF: %08X\n", pr_debug("Result of _DSM call for OFF: %08X\n", result);
result);
} }
return 0; return 0;
} }
@ -197,8 +196,7 @@ static int bbswitch_acpi_on(void) {
// failure // failure
return 1; return 1;
} }
printk(KERN_DEBUG "bbswitch: Result of _DSM call for ON: %08X\n", pr_debug("Result of _DSM call for ON: %08X\n", result);
result);
} }
return 0; return 0;
} }
@ -221,16 +219,15 @@ static void bbswitch_off(void) {
// to prevent the system from possibly locking up, don't disable the device // to prevent the system from possibly locking up, don't disable the device
// if it's still in use by a driver (i.e. nouveau or nvidia) // if it's still in use by a driver (i.e. nouveau or nvidia)
if (dis_dev->driver) { if (dis_dev->driver) {
printk(KERN_WARNING "bbswitch: device %s is in use by driver '%s', " pr_warn("device %s is in use by driver '%s', refusing OFF\n",
"refusing OFF\n", dev_name(&dis_dev->dev), dis_dev->driver->name); dev_name(&dis_dev->dev), dis_dev->driver->name);
return; return;
} }
printk(KERN_INFO "bbswitch: disabling discrete graphics\n"); pr_info("disabling discrete graphics\n");
if (bbswitch_optimus_dsm()) { if (bbswitch_optimus_dsm()) {
printk(KERN_WARNING "bbswitch: Optimus ACPI call failed, the device is" pr_warn("Optimus ACPI call failed, the device is not disabled\n");
" not disabled\n");
return; return;
} }
@ -240,25 +237,22 @@ static void bbswitch_off(void) {
pci_set_power_state(dis_dev, PCI_D3cold); pci_set_power_state(dis_dev, PCI_D3cold);
if (bbswitch_acpi_off()) if (bbswitch_acpi_off())
printk(KERN_WARNING "bbswitch: The discrete card could not be disabled" pr_warn("The discrete card could not be disabled by a _DSM call\n");
" by a _DSM call\n");
} }
static void bbswitch_on(void) { static void bbswitch_on(void) {
if (!is_card_disabled()) if (!is_card_disabled())
return; return;
printk(KERN_INFO "bbswitch: enabling discrete graphics\n"); pr_info("enabling discrete graphics\n");
if (bbswitch_acpi_on()) if (bbswitch_acpi_on())
printk(KERN_WARNING "bbswitch: The discrete card could not be enabled" pr_warn("The discrete card could not be enabled by a _DSM call\n");
" by a _DSM call\n");
pci_set_power_state(dis_dev, PCI_D0); pci_set_power_state(dis_dev, PCI_D0);
pci_restore_state(dis_dev); pci_restore_state(dis_dev);
if (pci_enable_device(dis_dev)) if (pci_enable_device(dis_dev))
printk(KERN_WARNING "bbswitch: failed to enable %s\n", pr_warn("failed to enable %s\n", dev_name(&dis_dev->dev));
dev_name(&dis_dev->dev));
pci_set_master(dis_dev); pci_set_master(dis_dev);
} }
@ -332,7 +326,7 @@ static int __init bbswitch_init(void) {
struct pci_dev *pdev = NULL; struct pci_dev *pdev = NULL;
acpi_handle igd_handle = NULL; acpi_handle igd_handle = NULL;
printk(KERN_INFO "bbswitch: version %s\n", BBSWITCH_VERSION); pr_info("version %s\n", BBSWITCH_VERSION);
while ((pdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pdev)) != NULL) { while ((pdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pdev)) != NULL) {
struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL };
@ -345,8 +339,8 @@ static int __init bbswitch_init(void) {
handle = DEVICE_ACPI_HANDLE(&pdev->dev); handle = DEVICE_ACPI_HANDLE(&pdev->dev);
if (!handle) { if (!handle) {
printk(KERN_WARNING "bbswitch: cannot find ACPI handle for VGA" pr_warn("cannot find ACPI handle for VGA device %s\n",
" device %s\n", dev_name(&pdev->dev)); dev_name(&pdev->dev));
continue; continue;
} }
@ -354,45 +348,45 @@ static int __init bbswitch_init(void) {
if (pdev->vendor == PCI_VENDOR_ID_INTEL) { if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
igd_handle = handle; igd_handle = handle;
printk(KERN_INFO "bbswitch: Found integrated VGA device %s: %s\n", pr_info("Found integrated VGA device %s: %s\n",
dev_name(&pdev->dev), (char *)buf.pointer); dev_name(&pdev->dev), (char *)buf.pointer);
} else { } else {
dis_dev = pdev; dis_dev = pdev;
dis_handle = handle; dis_handle = handle;
printk(KERN_INFO "bbswitch: Found discrete VGA device %s: %s\n", pr_info("Found discrete VGA device %s: %s\n",
dev_name(&pdev->dev), (char *)buf.pointer); dev_name(&pdev->dev), (char *)buf.pointer);
} }
kfree(buf.pointer); kfree(buf.pointer);
} }
if (dis_dev == NULL) { if (dis_dev == NULL) {
printk(KERN_ERR "bbswitch: No discrete VGA device found\n"); pr_err("No discrete VGA device found\n");
return -ENODEV; return -ENODEV;
} }
if (has_dsm_func(acpi_optimus_dsm_muid, 0x100, 0x1A)) { if (has_dsm_func(acpi_optimus_dsm_muid, 0x100, 0x1A)) {
dsm_type = DSM_TYPE_OPTIMUS; dsm_type = DSM_TYPE_OPTIMUS;
printk(KERN_INFO "bbswitch: detected an Optimus _DSM function\n"); pr_info("detected an Optimus _DSM function\n");
} else if (has_dsm_func(acpi_nvidia_dsm_muid, 0x102, 0x3)) { } else if (has_dsm_func(acpi_nvidia_dsm_muid, 0x102, 0x3)) {
dsm_type = DSM_TYPE_NVIDIA; dsm_type = DSM_TYPE_NVIDIA;
printk(KERN_INFO "bbswitch: detected a nVidia _DSM function\n"); pr_info("detected a nVidia _DSM function\n");
} else { } else {
/* At least two Acer machines are known to use the intel ACPI handle /* At least two Acer machines are known to use the intel ACPI handle
* with the legacy nvidia DSM */ * with the legacy nvidia DSM */
dis_handle = igd_handle; dis_handle = igd_handle;
if (has_dsm_func(acpi_nvidia_dsm_muid, 0x102, 0x3)) { if (has_dsm_func(acpi_nvidia_dsm_muid, 0x102, 0x3)) {
dsm_type = DSM_TYPE_NVIDIA; dsm_type = DSM_TYPE_NVIDIA;
printk(KERN_INFO "bbswitch: detected a nVidia _DSM function on the" pr_info("detected a nVidia _DSM function on the"
" integrated video card\n"); " integrated video card\n");
} else { } else {
printk(KERN_ERR "bbswitch: No suitable _DSM call found.\n"); pr_err("No suitable _DSM call found.\n");
return -ENODEV; return -ENODEV;
} }
} }
acpi_entry = proc_create("bbswitch", 0664, acpi_root_dir, &bbswitch_fops); acpi_entry = proc_create("bbswitch", 0664, acpi_root_dir, &bbswitch_fops);
if (acpi_entry == NULL) { if (acpi_entry == NULL) {
printk(KERN_ERR "bbswitch: Couldn't create proc entry\n"); pr_err("Couldn't create proc entry\n");
return -ENOMEM; return -ENOMEM;
} }
@ -401,7 +395,7 @@ static int __init bbswitch_init(void) {
else if (load_state == CARD_OFF) else if (load_state == CARD_OFF)
bbswitch_off(); bbswitch_off();
printk(KERN_INFO "bbswitch: Succesfully loaded. Discrete card %s is %s\n", pr_info("Succesfully loaded. Discrete card %s is %s\n",
dev_name(&dis_dev->dev), is_card_disabled() ? "off" : "on"); dev_name(&dis_dev->dev), is_card_disabled() ? "off" : "on");
nb.notifier_call = &bbswitch_pm_handler; nb.notifier_call = &bbswitch_pm_handler;
@ -418,7 +412,7 @@ static void __exit bbswitch_exit(void) {
else if (unload_state == CARD_OFF) else if (unload_state == CARD_OFF)
bbswitch_off(); bbswitch_off();
printk(KERN_INFO "bbswitch: Unloaded. Discrete card %s is %s\n", pr_info("Unloaded. Discrete card %s is %s\n",
dev_name(&dis_dev->dev), is_card_disabled() ? "off" : "on"); dev_name(&dis_dev->dev), is_card_disabled() ? "off" : "on");
if (nb.notifier_call) if (nb.notifier_call)

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