[PATCH 7/8] acpi: Add support for Apple Gmux _DMS
Pierre Moreau
pierre.morrow at free.fr
Mon May 25 15:22:52 PDT 2015
Signed-off-by: Pierre Moreau <pierre.morrow at free.fr>
---
drm/nouveau/nouveau_acpi.c | 53 ++++++++++++++++++++++++++++++++++++++++++++--
drm/nouveau/nouveau_acpi.h | 2 ++
drm/nouveau/nouveau_drm.c | 6 ++++--
drm/nouveau/nouveau_vga.c | 10 +++++----
4 files changed, 63 insertions(+), 8 deletions(-)
diff --git a/drm/nouveau/nouveau_acpi.c b/drm/nouveau/nouveau_acpi.c
index 104d291..3d6a1ea 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 +62,13 @@ bool nouveau_has_mux(void) {
return nouveau_dsm_priv.mux_detected;
}
+bool nouveau_has_gmux(void) {
+ return nouveau_dsm_priv.gmux_detected;
+}
+
#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 +83,18 @@ 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 +183,17 @@ 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 +271,9 @@ 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 +299,7 @@ static bool nouveau_dsm_detect(void)
struct pci_dev *pdev = NULL;
int has_dsm = 0;
int has_optimus = 0;
+ bool has_gmux = false;
int vga_count = 0;
bool guid_valid;
int retval;
@@ -283,6 +320,8 @@ static bool nouveau_dsm_detect(void)
has_dsm |= 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 +332,11 @@ static bool nouveau_dsm_detect(void)
has_dsm |= 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 +351,13 @@ 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 +369,8 @@ 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..7fcfe82 100644
--- a/drm/nouveau/nouveau_acpi.h
+++ b/drm/nouveau/nouveau_acpi.h
@@ -6,6 +6,7 @@
#if defined(CONFIG_ACPI) && defined(CONFIG_X86)
bool nouveau_is_optimus(void);
bool nouveau_has_mux(void);
+bool nouveau_has_gmux(void);
void nouveau_register_dsm_handler(void);
void nouveau_unregister_dsm_handler(void);
void nouveau_switcheroo_optimus_dsm(void);
@@ -15,6 +16,7 @@ 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 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..702aff8 100644
--- a/drm/nouveau/nouveau_drm.c
+++ b/drm/nouveau/nouveau_drm.c
@@ -719,7 +719,8 @@ nouveau_pmops_runtime_suspend(struct device *dev)
}
/* are we optimus enabled? */
- if (nouveau_runtime_pm == -1 && !nouveau_is_optimus() && !nouveau_has_mux()) {
+ if (nouveau_runtime_pm == -1 &&
+ !nouveau_is_optimus() && !nouveau_has_mux() && !nouveau_has_gmux()) {
DRM_DEBUG_DRIVER("failing to power off - not optimus\n");
pm_runtime_forbid(dev);
return -EBUSY;
@@ -780,7 +781,8 @@ nouveau_pmops_runtime_idle(struct device *dev)
}
/* are we optimus enabled? */
- if (nouveau_runtime_pm == -1 && !nouveau_is_optimus() && !nouveau_has_mux()) {
+ if (nouveau_runtime_pm == -1 &&
+ !nouveau_is_optimus() && !nouveau_has_mux() && !nouveau_has_gmux()) {
DRM_DEBUG_DRIVER("failing to power off - not optimus\n");
pm_runtime_forbid(dev);
return -EBUSY;
diff --git a/drm/nouveau/nouveau_vga.c b/drm/nouveau/nouveau_vga.c
index 9a6328f..3a7a9b9 100644
--- a/drm/nouveau/nouveau_vga.c
+++ b/drm/nouveau/nouveau_vga.c
@@ -96,11 +96,12 @@ 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_is_optimus() || nouveau_has_mux() || nouveau_has_gmux()))
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 +113,12 @@ 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_is_optimus() || nouveau_has_mux() || nouveau_has_gmux()))
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);
}
--
2.4.1
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