1 files changed, 169 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_quirks.c b/drivers/gpu/drm/i915/intel_quirks.c
new file mode 100644
index 000000000000..ec2b0fc92b8b
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_quirks.c
@@ -0,0 +1,169 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include <linux/dmi.h>
+
+#include "intel_drv.h"
+
+/*
+ * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
+ */
+static void quirk_ssc_force_disable(struct drm_i915_private *i915)
+{
+        i915->quirks |= QUIRK_LVDS_SSC_DISABLE;
+        DRM_INFO("applying lvds SSC disable quirk\n");
+}
+
+/*
+ * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
+ * brightness value
+ */
+static void quirk_invert_brightness(struct drm_i915_private *i915)
+{
+        i915->quirks |= QUIRK_INVERT_BRIGHTNESS;
+        DRM_INFO("applying inverted panel brightness quirk\n");
+}
+
+/* Some VBT's incorrectly indicate no backlight is present */
+static void quirk_backlight_present(struct drm_i915_private *i915)
+{
+        i915->quirks |= QUIRK_BACKLIGHT_PRESENT;
+        DRM_INFO("applying backlight present quirk\n");
+}
+
+/* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms
+ * which is 300 ms greater than eDP spec T12 min.
+ */
+static void quirk_increase_t12_delay(struct drm_i915_private *i915)
+{
+        i915->quirks |= QUIRK_INCREASE_T12_DELAY;
+        DRM_INFO("Applying T12 delay quirk\n");
+}
+
+/*
+ * GeminiLake NUC HDMI outputs require additional off time
+ * this allows the onboard retimer to correctly sync to signal
+ */
+static void quirk_increase_ddi_disabled_time(struct drm_i915_private *i915)
+{
+        i915->quirks |= QUIRK_INCREASE_DDI_DISABLED_TIME;
+        DRM_INFO("Applying Increase DDI Disabled quirk\n");
+}
+
+struct intel_quirk {
+        int device;
+        int subsystem_vendor;
+        int subsystem_device;
+        void (*hook)(struct drm_i915_private *i915);
+};
+
+/* For systems that don't have a meaningful PCI subdevice/subvendor ID */
+struct intel_dmi_quirk {
+        void (*hook)(struct drm_i915_private *i915);
+        const struct dmi_system_id (*dmi_id_list)[];
+};
+
+static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
+{
+        DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
+        return 1;
+}
+
+static const struct intel_dmi_quirk intel_dmi_quirks[] = {
+        {
+                .dmi_id_list = &(const struct dmi_system_id[]) {
+                        {
+                                .callback = intel_dmi_reverse_brightness,
+                                .ident = "NCR Corporation",
+                                .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
+                                            DMI_MATCH(DMI_PRODUCT_NAME, ""),
+                                },
+                        },
+                        { }  /* terminating entry */
+                },
+                .hook = quirk_invert_brightness,
+        },
+};
+
+static struct intel_quirk intel_quirks[] = {
+        /* Lenovo U160 cannot use SSC on LVDS */
+        { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
+
+        /* Sony Vaio Y cannot use SSC on LVDS */
+        { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
+
+        /* Acer Aspire 5734Z must invert backlight brightness */
+        { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
+
+        /* Acer/eMachines G725 */
+        { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
+
+        /* Acer/eMachines e725 */
+        { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
+
+        /* Acer/Packard Bell NCL20 */
+        { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
+
+        /* Acer Aspire 4736Z */
+        { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
+
+        /* Acer Aspire 5336 */
+        { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
+
+        /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
+        { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
+
+        /* Acer C720 Chromebook (Core i3 4005U) */
+        { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
+
+        /* Apple Macbook 2,1 (Core 2 T7400) */
+        { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
+
+        /* Apple Macbook 4,1 */
+        { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
+
+        /* Toshiba CB35 Chromebook (Celeron 2955U) */
+        { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
+
+        /* HP Chromebook 14 (Celeron 2955U) */
+        { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
+
+        /* Dell Chromebook 11 */
+        { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
+
+        /* Dell Chromebook 11 (2015 version) */
+        { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
+
+        /* Toshiba Satellite P50-C-18C */
+        { 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
+
+        /* GeminiLake NUC */
+        { 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
+        { 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
+        /* ASRock ITX*/
+        { 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
+        { 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
+};
+
+void intel_init_quirks(struct drm_i915_private *i915)
+{
+        struct pci_dev *d = i915->drm.pdev;
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
+                struct intel_quirk *q = &intel_quirks[i];
+
+                if (d->device == q->device &&
+                    (d->subsystem_vendor == q->subsystem_vendor ||
+                     q->subsystem_vendor == PCI_ANY_ID) &&
+                    (d->subsystem_device == q->subsystem_device ||
+                     q->subsystem_device == PCI_ANY_ID))
+                        q->hook(i915);
+        }
+        for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
+                if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
+                        intel_dmi_quirks[i].hook(i915);
+        }
+}