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authorDave Airlie <airlied@redhat.com>2010-03-01 16:22:38 +1000
committerDave Airlie <airlied@redhat.com>2010-03-01 16:22:38 +1000
commit1c62233508ef7104f8a78e571fdf5c72d0dc0200 (patch)
tree31e19cbff5c1080d3015d20b24dd43ee95f4ed8c /drivers/gpu/drm/nouveau
parent6d9c13513661c1991bf5f4e6e1363c721292d819 (diff)
parent6a9ee8af344e3bd7dbd61e67037096cdf7f83289 (diff)
Merge branch 'gpu-switcher' of /ssd/git//linux-2.6 into drm-next-stage
* 'gpu-switcher' of /ssd/git//linux-2.6: vga_switcheroo: initial implementation (v15) fb: for framebuffer handover don't exit the loop early. Conflicts: drivers/gpu/drm/i915/i915_dma.c drivers/gpu/drm/radeon/Makefile drivers/gpu/drm/radeon/radeon.h
Diffstat (limited to 'drivers/gpu/drm/nouveau')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_acpi.c160
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_drv.c9
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_drv.h19
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_fbcon.c2
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_state.c32
5 files changed, 160 insertions, 62 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c
index 48227e74475..0e0730a5313 100644
--- a/drivers/gpu/drm/nouveau/nouveau_acpi.c
+++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c
@@ -11,6 +11,8 @@
#include "nouveau_drm.h"
#include "nv50_display.h"
+#include <linux/vga_switcheroo.h>
+
#define NOUVEAU_DSM_SUPPORTED 0x00
#define NOUVEAU_DSM_SUPPORTED_FUNCTIONS 0x00
@@ -28,31 +30,30 @@
#define NOUVEAU_DSM_POWER_SPEED 0x01
#define NOUVEAU_DSM_POWER_STAMINA 0x02
-static int nouveau_dsm(struct drm_device *dev, int func, int arg, int *result)
-{
- static char muid[] = {
- 0xA0, 0xA0, 0x95, 0x9D, 0x60, 0x00, 0x48, 0x4D,
- 0xB3, 0x4D, 0x7E, 0x5F, 0xEA, 0x12, 0x9F, 0xD4,
- };
+static struct nouveau_dsm_priv {
+ bool dsm_detected;
+ acpi_handle dhandle;
+ acpi_handle dsm_handle;
+} nouveau_dsm_priv;
+
+static const char nouveau_dsm_muid[] = {
+ 0xA0, 0xA0, 0x95, 0x9D, 0x60, 0x00, 0x48, 0x4D,
+ 0xB3, 0x4D, 0x7E, 0x5F, 0xEA, 0x12, 0x9F, 0xD4,
+};
- struct pci_dev *pdev = dev->pdev;
- struct acpi_handle *handle;
+static int nouveau_dsm(acpi_handle handle, int func, int arg, int *result)
+{
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_object_list input;
union acpi_object params[4];
union acpi_object *obj;
int err;
- handle = DEVICE_ACPI_HANDLE(&pdev->dev);
-
- if (!handle)
- return -ENODEV;
-
input.count = 4;
input.pointer = params;
params[0].type = ACPI_TYPE_BUFFER;
- params[0].buffer.length = sizeof(muid);
- params[0].buffer.pointer = (char *)muid;
+ params[0].buffer.length = sizeof(nouveau_dsm_muid);
+ params[0].buffer.pointer = (char *)nouveau_dsm_muid;
params[1].type = ACPI_TYPE_INTEGER;
params[1].integer.value = 0x00000102;
params[2].type = ACPI_TYPE_INTEGER;
@@ -62,7 +63,7 @@ static int nouveau_dsm(struct drm_device *dev, int func, int arg, int *result)
err = acpi_evaluate_object(handle, "_DSM", &input, &output);
if (err) {
- NV_INFO(dev, "failed to evaluate _DSM: %d\n", err);
+ printk(KERN_INFO "failed to evaluate _DSM: %d\n", err);
return err;
}
@@ -86,40 +87,119 @@ static int nouveau_dsm(struct drm_device *dev, int func, int arg, int *result)
return 0;
}
-int nouveau_hybrid_setup(struct drm_device *dev)
+static int nouveau_dsm_switch_mux(acpi_handle handle, int mux_id)
{
- int result;
-
- if (nouveau_dsm(dev, NOUVEAU_DSM_POWER, NOUVEAU_DSM_POWER_STATE,
- &result))
- return -ENODEV;
-
- NV_INFO(dev, "_DSM hardware status gave 0x%x\n", result);
-
- if (result) { /* Ensure that the external GPU is enabled */
- nouveau_dsm(dev, NOUVEAU_DSM_LED, NOUVEAU_DSM_LED_SPEED, NULL);
- nouveau_dsm(dev, NOUVEAU_DSM_POWER, NOUVEAU_DSM_POWER_SPEED,
- NULL);
- } else { /* Stamina mode - disable the external GPU */
- nouveau_dsm(dev, NOUVEAU_DSM_LED, NOUVEAU_DSM_LED_STAMINA,
- NULL);
- nouveau_dsm(dev, NOUVEAU_DSM_POWER, NOUVEAU_DSM_POWER_STAMINA,
- NULL);
- }
+ return nouveau_dsm(handle, NOUVEAU_DSM_LED, mux_id, NULL);
+}
+
+static int nouveau_dsm_set_discrete_state(acpi_handle handle, enum vga_switcheroo_state state)
+{
+ int arg;
+ if (state == VGA_SWITCHEROO_ON)
+ arg = NOUVEAU_DSM_POWER_SPEED;
+ else
+ arg = NOUVEAU_DSM_POWER_STAMINA;
+ nouveau_dsm(handle, NOUVEAU_DSM_POWER, arg, NULL);
+ return 0;
+}
+
+static int nouveau_dsm_switchto(enum vga_switcheroo_client_id id)
+{
+ if (id == VGA_SWITCHEROO_IGD)
+ return nouveau_dsm_switch_mux(nouveau_dsm_priv.dsm_handle, NOUVEAU_DSM_LED_STAMINA);
+ else
+ return nouveau_dsm_switch_mux(nouveau_dsm_priv.dsm_handle, NOUVEAU_DSM_LED_SPEED);
+}
+static int nouveau_dsm_power_state(enum vga_switcheroo_client_id id,
+ enum vga_switcheroo_state state)
+{
+ if (id == VGA_SWITCHEROO_IGD)
+ return 0;
+
+ return nouveau_dsm_set_discrete_state(nouveau_dsm_priv.dsm_handle, state);
+}
+
+static int nouveau_dsm_init(void)
+{
return 0;
}
-bool nouveau_dsm_probe(struct drm_device *dev)
+static int nouveau_dsm_get_client_id(struct pci_dev *pdev)
{
- int support = 0;
+ if (nouveau_dsm_priv.dhandle == DEVICE_ACPI_HANDLE(&pdev->dev))
+ return VGA_SWITCHEROO_IGD;
+ else
+ return VGA_SWITCHEROO_DIS;
+}
+
+static struct vga_switcheroo_handler nouveau_dsm_handler = {
+ .switchto = nouveau_dsm_switchto,
+ .power_state = nouveau_dsm_power_state,
+ .init = nouveau_dsm_init,
+ .get_client_id = nouveau_dsm_get_client_id,
+};
- if (nouveau_dsm(dev, NOUVEAU_DSM_SUPPORTED,
- NOUVEAU_DSM_SUPPORTED_FUNCTIONS, &support))
+static bool nouveau_dsm_pci_probe(struct pci_dev *pdev)
+{
+ acpi_handle dhandle, nvidia_handle;
+ acpi_status status;
+ int ret;
+ uint32_t result;
+
+ dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
+ if (!dhandle)
+ return false;
+ status = acpi_get_handle(dhandle, "_DSM", &nvidia_handle);
+ if (ACPI_FAILURE(status)) {
return false;
+ }
- if (!support)
+ ret= nouveau_dsm(nvidia_handle, NOUVEAU_DSM_SUPPORTED,
+ NOUVEAU_DSM_SUPPORTED_FUNCTIONS, &result);
+ if (ret < 0)
return false;
+ nouveau_dsm_priv.dhandle = dhandle;
+ nouveau_dsm_priv.dsm_handle = nvidia_handle;
return true;
}
+
+static bool nouveau_dsm_detect(void)
+{
+ char acpi_method_name[255] = { 0 };
+ struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name};
+ struct pci_dev *pdev = NULL;
+ int has_dsm = 0;
+ int vga_count = 0;
+ while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
+ vga_count++;
+
+ has_dsm |= (nouveau_dsm_pci_probe(pdev) == true);
+ }
+
+ if (vga_count == 2 && has_dsm) {
+ acpi_get_name(nouveau_dsm_priv.dsm_handle, ACPI_FULL_PATHNAME, &buffer);
+ printk(KERN_INFO "VGA switcheroo: detected DSM switching method %s handle\n",
+ acpi_method_name);
+ nouveau_dsm_priv.dsm_detected = true;
+ return true;
+ }
+ return false;
+}
+
+void nouveau_register_dsm_handler(void)
+{
+ bool r;
+
+ r = nouveau_dsm_detect();
+ if (!r)
+ return;
+
+ vga_switcheroo_register_handler(&nouveau_dsm_handler);
+}
+
+void nouveau_unregister_dsm_handler(void)
+{
+ vga_switcheroo_unregister_handler();
+}
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
index 874adf55a43..30cc09e8a70 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
@@ -135,7 +135,7 @@ nouveau_pci_remove(struct pci_dev *pdev)
drm_put_dev(dev);
}
-static int
+int
nouveau_pci_suspend(struct pci_dev *pdev, pm_message_t pm_state)
{
struct drm_device *dev = pci_get_drvdata(pdev);
@@ -233,7 +233,7 @@ out_abort:
return ret;
}
-static int
+int
nouveau_pci_resume(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
@@ -402,8 +402,10 @@ static int __init nouveau_init(void)
nouveau_modeset = 1;
}
- if (nouveau_modeset == 1)
+ if (nouveau_modeset == 1) {
driver.driver_features |= DRIVER_MODESET;
+ nouveau_register_dsm_handler();
+ }
return drm_init(&driver);
}
@@ -411,6 +413,7 @@ static int __init nouveau_init(void)
static void __exit nouveau_exit(void)
{
drm_exit(&driver);
+ nouveau_unregister_dsm_handler();
}
module_init(nouveau_init);
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 2f8ce42f072..a2e24f252e8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -622,7 +622,6 @@ struct drm_nouveau_private {
} susres;
struct backlight_device *backlight;
- bool acpi_dsm;
struct nouveau_channel *evo;
@@ -690,6 +689,9 @@ extern int nouveau_ignorelid;
extern int nouveau_nofbaccel;
extern int nouveau_noaccel;
+extern int nouveau_pci_suspend(struct pci_dev *pdev, pm_message_t pm_state);
+extern int nouveau_pci_resume(struct pci_dev *pdev);
+
/* nouveau_state.c */
extern void nouveau_preclose(struct drm_device *dev, struct drm_file *);
extern int nouveau_load(struct drm_device *, unsigned long flags);
@@ -850,19 +852,8 @@ extern int nouveau_dma_init(struct nouveau_channel *);
extern int nouveau_dma_wait(struct nouveau_channel *, int slots, int size);
/* nouveau_acpi.c */
-#ifdef CONFIG_ACPI
-extern int nouveau_hybrid_setup(struct drm_device *dev);
-extern bool nouveau_dsm_probe(struct drm_device *dev);
-#else
-static inline int nouveau_hybrid_setup(struct drm_device *dev)
-{
- return 0;
-}
-static inline bool nouveau_dsm_probe(struct drm_device *dev)
-{
- return false;
-}
-#endif
+void nouveau_register_dsm_handler(void);
+void nouveau_unregister_dsm_handler(void);
/* nouveau_backlight.c */
#ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index d48c59cdefe..68cedd9194f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -36,6 +36,7 @@
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/screen_info.h>
+#include <linux/vga_switcheroo.h>
#include "drmP.h"
#include "drm.h"
@@ -370,6 +371,7 @@ nouveau_fbcon_create(struct drm_device *dev, uint32_t fb_width,
nvbo->bo.offset, nvbo);
mutex_unlock(&dev->struct_mutex);
+ vga_switcheroo_client_fb_set(dev->pdev, info);
return 0;
out_unref:
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 516a8d36cb1..eb8f084d5f5 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -29,6 +29,7 @@
#include "drm_sarea.h"
#include "drm_crtc_helper.h"
#include <linux/vgaarb.h>
+#include <linux/vga_switcheroo.h>
#include "nouveau_drv.h"
#include "nouveau_drm.h"
@@ -371,6 +372,30 @@ out_err:
return ret;
}
+static void nouveau_switcheroo_set_state(struct pci_dev *pdev,
+ enum vga_switcheroo_state state)
+{
+ pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
+ if (state == VGA_SWITCHEROO_ON) {
+ printk(KERN_ERR "VGA switcheroo: switched nouveau on\n");
+ nouveau_pci_resume(pdev);
+ } else {
+ printk(KERN_ERR "VGA switcheroo: switched nouveau off\n");
+ nouveau_pci_suspend(pdev, pmm);
+ }
+}
+
+static bool nouveau_switcheroo_can_switch(struct pci_dev *pdev)
+{
+ struct drm_device *dev = pci_get_drvdata(pdev);
+ bool can_switch;
+
+ spin_lock(&dev->count_lock);
+ can_switch = (dev->open_count == 0);
+ spin_unlock(&dev->count_lock);
+ return can_switch;
+}
+
int
nouveau_card_init(struct drm_device *dev)
{
@@ -384,6 +409,8 @@ nouveau_card_init(struct drm_device *dev)
return 0;
vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
+ vga_switcheroo_register_client(dev->pdev, nouveau_switcheroo_set_state,
+ nouveau_switcheroo_can_switch);
/* Initialise internal driver API hooks */
ret = nouveau_init_engine_ptrs(dev);
@@ -618,11 +645,6 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
NV_DEBUG(dev, "vendor: 0x%X device: 0x%X class: 0x%X\n",
dev->pci_vendor, dev->pci_device, dev->pdev->class);
- dev_priv->acpi_dsm = nouveau_dsm_probe(dev);
-
- if (dev_priv->acpi_dsm)
- nouveau_hybrid_setup(dev);
-
dev_priv->wq = create_workqueue("nouveau");
if (!dev_priv->wq)
return -EINVAL;