[PATCH 3.16 083/217] drm/radeon: add a PX quirk list
From: Ben Hutchings
Date: Tue Apr 26 2016 - 19:26:46 EST
3.16.35-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit 4807c5a8a0c87a210c36e3ad74c451a909d88588 upstream.
Some PX laptops seems to have problems turning the dGPU on/off.
Add a quirk list to disable runpm by default on those systems.
Also convert the current PX d3 delay handling to a quirk.
bug:
https://bugzilla.kernel.org/show_bug.cgi?id=51381
https://bugzilla.kernel.org/show_bug.cgi?id=74551
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/radeon.h | 1 +
drivers/gpu/drm/radeon/radeon_device.c | 70 ++++++++++++++++++++++++----------
2 files changed, 51 insertions(+), 20 deletions(-)
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -2350,6 +2350,7 @@ struct radeon_device {
struct dev_pm_domain vga_pm_domain;
bool have_disp_power_ref;
+ u32 px_quirk_flags;
};
bool radeon_is_px(struct drm_device *dev);
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -103,6 +103,31 @@ static const char radeon_family_name[][1
"LAST",
};
+#define RADEON_PX_QUIRK_DISABLE_PX (1 << 0)
+#define RADEON_PX_QUIRK_LONG_WAKEUP (1 << 1)
+
+struct radeon_px_quirk {
+ u32 chip_vendor;
+ u32 chip_device;
+ u32 subsys_vendor;
+ u32 subsys_device;
+ u32 px_quirk_flags;
+};
+
+static struct radeon_px_quirk radeon_px_quirk_list[] = {
+ /* Acer aspire 5560g (CPU: AMD A4-3305M; GPU: AMD Radeon HD 6480g + 7470m)
+ * https://bugzilla.kernel.org/show_bug.cgi?id=74551
+ */
+ { PCI_VENDOR_ID_ATI, 0x6760, 0x1025, 0x0672, RADEON_PX_QUIRK_DISABLE_PX },
+ /* Asus K73TA laptop with AMD A6-3400M APU and Radeon 6550 GPU
+ * https://bugzilla.kernel.org/show_bug.cgi?id=51381
+ */
+ { PCI_VENDOR_ID_ATI, 0x6741, 0x1043, 0x108c, RADEON_PX_QUIRK_DISABLE_PX },
+ /* macbook pro 8.2 */
+ { PCI_VENDOR_ID_ATI, 0x6741, PCI_VENDOR_ID_APPLE, 0x00e2, RADEON_PX_QUIRK_LONG_WAKEUP },
+ { 0, 0, 0, 0, 0 },
+};
+
bool radeon_is_px(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
@@ -112,6 +137,26 @@ bool radeon_is_px(struct drm_device *dev
return false;
}
+static void radeon_device_handle_px_quirks(struct radeon_device *rdev)
+{
+ struct radeon_px_quirk *p = radeon_px_quirk_list;
+
+ /* Apply PX quirks */
+ while (p && p->chip_device != 0) {
+ if (rdev->pdev->vendor == p->chip_vendor &&
+ rdev->pdev->device == p->chip_device &&
+ rdev->pdev->subsystem_vendor == p->subsys_vendor &&
+ rdev->pdev->subsystem_device == p->subsys_device) {
+ rdev->px_quirk_flags = p->px_quirk_flags;
+ break;
+ }
+ ++p;
+ }
+
+ if (rdev->px_quirk_flags & RADEON_PX_QUIRK_DISABLE_PX)
+ rdev->flags &= ~RADEON_IS_PX;
+}
+
/**
* radeon_program_register_sequence - program an array of registers.
*
@@ -1093,25 +1138,6 @@ static void radeon_check_arguments(struc
}
/**
- * radeon_switcheroo_quirk_long_wakeup - return true if longer d3 delay is
- * needed for waking up.
- *
- * @pdev: pci dev pointer
- */
-static bool radeon_switcheroo_quirk_long_wakeup(struct pci_dev *pdev)
-{
-
- /* 6600m in a macbook pro */
- if (pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
- pdev->subsystem_device == 0x00e2) {
- printk(KERN_INFO "radeon: quirking longer d3 wakeup delay\n");
- return true;
- }
-
- return false;
-}
-
-/**
* radeon_switcheroo_set_state - set switcheroo state
*
* @pdev: pci dev pointer
@@ -1123,6 +1149,7 @@ static bool radeon_switcheroo_quirk_long
static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
{
struct drm_device *dev = pci_get_drvdata(pdev);
+ struct radeon_device *rdev = dev->dev_private;
if (radeon_is_px(dev) && state == VGA_SWITCHEROO_OFF)
return;
@@ -1134,7 +1161,7 @@ static void radeon_switcheroo_set_state(
/* don't suspend or resume card normally */
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
- if (d3_delay < 20 && radeon_switcheroo_quirk_long_wakeup(pdev))
+ if (d3_delay < 20 && (rdev->px_quirk_flags & RADEON_PX_QUIRK_LONG_WAKEUP))
dev->pdev->d3_delay = 20;
radeon_resume_kms(dev, true, true);
@@ -1338,6 +1365,9 @@ int radeon_device_init(struct radeon_dev
if (rdev->rio_mem == NULL)
DRM_ERROR("Unable to find PCI I/O BAR\n");
+ if (rdev->flags & RADEON_IS_PX)
+ radeon_device_handle_px_quirks(rdev);
+
/* if we have > 1 VGA cards, then disable the radeon VGA resources */
/* this will fail for cards that aren't VGA class devices, just
* ignore it */