[PATCH v2 8/9] acpi: Add support for Apple Gmux _DMS
Pierre Moreau
pierre.morrow at free.fr
Wed May 27 23:40:48 PDT 2015
Changes since v1:
* Factorise testing of the 3 different _DSMs presence with a single function
* Check for gmux in nouveau_switcheroo_set_state
* Change some comments and messages that were referring explicitly to Optimus
whereas they were also testing the mux and gmux _DSMs
Signed-off-by: Pierre Moreau <pierre.morrow at free.fr>
---
drm/nouveau/nouveau_acpi.c | 57 ++++++++++++++++++++++++++++++++++++++++++++--
drm/nouveau/nouveau_acpi.h | 4 ++++
drm/nouveau/nouveau_drm.c | 12 +++++-----
drm/nouveau/nouveau_vga.c | 10 ++++----
4 files changed, 70 insertions(+), 13 deletions(-)
diff --git a/drm/nouveau/nouveau_acpi.c b/drm/nouveau/nouveau_acpi.c
index edc4b94..ee5fcfa 100644
--- a/drm/nouveau/nouveau_acpi.c
+++ b/drm/nouveau/nouveau_acpi.c
@@ -29,6 +29,10 @@
#define NOUVEAU_DSM_OPTIMUS_SET_POWERDOWN (NOUVEAU_DSM_OPTIMUS_POWERDOWN_PS3 | NOUVEAU_DSM_OPTIMUS_FLAGS_CHANGED)
+#define NOUVEAU_DSM_GMUX_V1_CAPS (3 << 6)
+
+#define NOUVEAU_DSM_GMUX_V2_CAPS (1 << 1)
+
/* result of the optimus caps function */
#define OPTIMUS_ENABLED (1 << 0)
#define OPTIMUS_STATUS_MASK (3 << 3)
@@ -45,6 +49,7 @@
static struct nouveau_dsm_priv {
bool mux_detected;
bool optimus_detected;
+ bool gmux_detected;
acpi_handle dhandle;
acpi_handle rom_handle;
} nouveau_dsm_priv;
@@ -57,8 +62,17 @@ bool nouveau_has_mux(void) {
return nouveau_dsm_priv.mux_detected;
}
+bool nouveau_has_gmux(void) {
+ return nouveau_dsm_priv.gmux_detected;
+}
+
+bool nouveau_has_dsm(void) {
+ return nouveau_is_optimus() || nouveau_has_mux() || nouveau_has_gmux();
+}
+
#define NOUVEAU_DSM_HAS_MUX 0x1
#define NOUVEAU_DSM_HAS_OPT 0x2
+#define NOUVEAU_DSM_HAS_GMUX 0x4
#ifdef CONFIG_VGA_SWITCHEROO
static const uint32_t nouveau_mux_dsm_rid = 0x00000102;
@@ -73,6 +87,18 @@ static const char nouveau_op_dsm_muid[] = {
0xA7, 0x2B, 0x60, 0x42, 0xA6, 0xB5, 0xBE, 0xE0,
};
+static const uint32_t nouveau_gmux_v1_dsm_rid = 0x0000101;
+static const char nouveau_gmux_v1_dsm_muid[] = {
+ 0xA6, 0x69, 0x86, 0x99, 0xE9, 0x8B, 0xFB, 0x49,
+ 0xBD, 0xDB, 0x51, 0xA1, 0xEF, 0xE1, 0x9C, 0x3D,
+};
+
+static const uint32_t nouveau_gmux_v2_dsm_rid = 0x0000001;
+static const char nouveau_gmux_v2_dsm_muid[] = {
+ 0xC6, 0xB7, 0xB5, 0xA0, 0x18, 0x13, 0x1C, 0x44,
+ 0xB0, 0xC9, 0xFE, 0x69, 0x5E, 0xAF, 0x94, 0x9B,
+};
+
static int nouveau_evaluate_optimus_dsm(acpi_handle handle, int func, int arg, uint32_t *result)
{
int i;
@@ -161,6 +187,17 @@ static int nouveau_evaluate_mux_dsm(acpi_handle handle, int func, int arg)
return ret;
}
+static int nouveau_check_gmux_dsm(acpi_handle handle)
+{
+ bool has_v1 = acpi_check_dsm(handle, nouveau_gmux_v1_dsm_muid,
+ nouveau_gmux_v1_dsm_rid,
+ NOUVEAU_DSM_GMUX_V1_CAPS);
+ bool has_v2 = acpi_check_dsm(handle, nouveau_gmux_v2_dsm_muid,
+ nouveau_gmux_v2_dsm_rid,
+ NOUVEAU_DSM_GMUX_V2_CAPS);
+ return has_v1 || has_v2;
+}
+
static int nouveau_dsm_switch_mux(acpi_handle handle, int mux_id)
{
mxm_wmi_call_mxmx(mux_id == NOUVEAU_DSM_MUX_LED_STAMINA ? MXM_MXDS_ADAPTER_IGD : MXM_MXDS_ADAPTER_0);
@@ -238,6 +275,9 @@ static int nouveau_dsm_pci_probe(struct pci_dev *pdev)
1 << NOUVEAU_DSM_MUX_POWER))
retval |= NOUVEAU_DSM_HAS_MUX;
+ if (nouveau_check_gmux_dsm(dhandle))
+ retval |= NOUVEAU_DSM_HAS_GMUX;
+
if (nouveau_check_optimus_dsm(dhandle))
retval |= NOUVEAU_DSM_HAS_OPT;
@@ -263,6 +303,7 @@ static bool nouveau_dsm_detect(void)
struct pci_dev *pdev = NULL;
int has_mux = 0;
int has_optimus = 0;
+ bool has_gmux = false;
int vga_count = 0;
bool guid_valid;
int retval;
@@ -283,6 +324,8 @@ static bool nouveau_dsm_detect(void)
has_mux |= 1;
if (retval & NOUVEAU_DSM_HAS_OPT)
has_optimus = 1;
+ if (retval & NOUVEAU_DSM_HAS_GMUX)
+ has_gmux = true;
}
while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_3D << 8, pdev)) != NULL) {
@@ -293,9 +336,11 @@ static bool nouveau_dsm_detect(void)
has_mux |= 1;
if (retval & NOUVEAU_DSM_HAS_OPT)
has_optimus = 1;
+ if (retval & NOUVEAU_DSM_HAS_GMUX)
+ has_gmux = true;
}
- /* find the optimus DSM or the mux DSM */
+ /* find the optimus DSM, the mux DSM or the gmux DSM */
if (has_optimus == 1) {
acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME,
&buffer);
@@ -310,6 +355,13 @@ static bool nouveau_dsm_detect(void)
acpi_method_name);
nouveau_dsm_priv.mux_detected = true;
ret = true;
+ } else if (has_gmux) {
+ acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME,
+ &buffer);
+ printk(KERN_INFO "VGA switcheroo: detected gmux DSM switching method %s handle\n",
+ acpi_method_name);
+ nouveau_dsm_priv.gmux_detected = true;
+ ret = true;
}
@@ -321,7 +373,8 @@ void nouveau_register_dsm_handler(void)
bool r;
r = nouveau_dsm_detect();
- if (!r)
+ /* Apple Gmux will register its own vga switcheroo handler */
+ if (!r || nouveau_has_gmux())
return;
vga_switcheroo_register_handler(&nouveau_dsm_handler);
diff --git a/drm/nouveau/nouveau_acpi.h b/drm/nouveau/nouveau_acpi.h
index 2bd88a8..e57ca3c 100644
--- a/drm/nouveau/nouveau_acpi.h
+++ b/drm/nouveau/nouveau_acpi.h
@@ -6,6 +6,8 @@
#if defined(CONFIG_ACPI) && defined(CONFIG_X86)
bool nouveau_is_optimus(void);
bool nouveau_has_mux(void);
+bool nouveau_has_gmux(void);
+bool nouveau_has_dsm(void);
void nouveau_register_dsm_handler(void);
void nouveau_unregister_dsm_handler(void);
void nouveau_switcheroo_optimus_dsm(void);
@@ -15,6 +17,8 @@ void *nouveau_acpi_edid(struct drm_device *, struct drm_connector *);
#else
static inline bool nouveau_is_optimus(void) { return false; };
static inline bool nouveau_has_mux(void) { return false; };
+static inline bool nouveau_has_gmux(void) { return false; };
+static inline bool nouveau_has_dsm(void) { return false; };
static inline void nouveau_register_dsm_handler(void) {}
static inline void nouveau_unregister_dsm_handler(void) {}
static inline void nouveau_switcheroo_optimus_dsm(void) {}
diff --git a/drm/nouveau/nouveau_drm.c b/drm/nouveau/nouveau_drm.c
index c06a7a1..5f85251 100644
--- a/drm/nouveau/nouveau_drm.c
+++ b/drm/nouveau/nouveau_drm.c
@@ -718,9 +718,9 @@ nouveau_pmops_runtime_suspend(struct device *dev)
return -EBUSY;
}
- /* are we optimus enabled? */
- if (nouveau_runtime_pm == -1 && !nouveau_is_optimus() && !nouveau_has_mux()) {
- DRM_DEBUG_DRIVER("failing to power off - not optimus\n");
+ /* do we have a _DSM for switching? */
+ if (nouveau_runtime_pm == -1 && !nouveau_has_dsm()) {
+ DRM_DEBUG_DRIVER("failing to power off - no valid _DSM found\n");
pm_runtime_forbid(dev);
return -EBUSY;
}
@@ -779,9 +779,9 @@ nouveau_pmops_runtime_idle(struct device *dev)
return -EBUSY;
}
- /* are we optimus enabled? */
- if (nouveau_runtime_pm == -1 && !nouveau_is_optimus() && !nouveau_has_mux()) {
- DRM_DEBUG_DRIVER("failing to power off - not optimus\n");
+ /* do we have a _DSM for switching? */
+ if (nouveau_runtime_pm == -1 && !nouveau_has_dsm()) {
+ DRM_DEBUG_DRIVER("failing to power off - no valid _DSM found\n");
pm_runtime_forbid(dev);
return -EBUSY;
}
diff --git a/drm/nouveau/nouveau_vga.c b/drm/nouveau/nouveau_vga.c
index 9a6328f..7b13804 100644
--- a/drm/nouveau/nouveau_vga.c
+++ b/drm/nouveau/nouveau_vga.c
@@ -36,7 +36,7 @@ nouveau_switcheroo_set_state(struct pci_dev *pdev,
{
struct drm_device *dev = pci_get_drvdata(pdev);
- if ((nouveau_is_optimus() || nouveau_has_mux()) && state == VGA_SWITCHEROO_OFF)
+ if (nouveau_has_dsm() && state == VGA_SWITCHEROO_OFF)
return;
if (state == VGA_SWITCHEROO_ON) {
@@ -96,11 +96,11 @@ nouveau_vga_init(struct nouveau_drm *drm)
if (nouveau_runtime_pm == 1)
runtime = true;
- if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_has_mux()))
+ if ((nouveau_runtime_pm == -1) && nouveau_has_dsm())
runtime = true;
vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops, runtime);
- if (runtime && nouveau_has_mux() && !nouveau_is_optimus())
+ if (runtime && (nouveau_has_mux() || nouveau_has_gmux()) && !nouveau_is_optimus())
vga_switcheroo_init_domain_pm_ops(drm->dev->dev, &drm->vga_pm_domain);
}
@@ -112,11 +112,11 @@ nouveau_vga_fini(struct nouveau_drm *drm)
if (nouveau_runtime_pm == 1)
runtime = true;
- if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_has_mux()))
+ if ((nouveau_runtime_pm == -1) && nouveau_has_dsm())
runtime = true;
vga_switcheroo_unregister_client(dev->pdev);
- if (runtime && nouveau_has_mux() && !nouveau_is_optimus())
+ if (runtime && (nouveau_has_mux() || nouveau_has_gmux()) && !nouveau_is_optimus())
vga_switcheroo_fini_domain_pm_ops(drm->dev->dev);
vga_client_register(dev->pdev, NULL, NULL, NULL);
}
--
2.4.2
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