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Message-ID: <20250210162950.4102846-1-qs315490@outlook.com>
Date: Mon, 10 Feb 2025 16:30:07 +0000
From: 李 政 <qs315490@...look.com>
To: "airlied@...il.com" <airlied@...il.com>
CC: "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
李 政 <qs315490@...look.com>
Subject: [PATCH] drm/i915/quirks: Add no dpio-common-bc powerwell init quirk
for xiaomi-latte
This tablet does not have dpio-common-bc powerwell init.
i915 0000:00:02.0: [drm] *ERROR* timeout setting power well state 00000000 (fffff3ff)
i915 0000:00:02.0: [drm] *ERROR* Display PHY 0 is not power up
Signed-off-by: Qs315490 <qs315490@...look.com>
---
.../drm/i915/display/intel_display_driver.c | 4 ++--
.../drm/i915/display/intel_display_power.c | 21 +++++++++++++++++++
drivers/gpu/drm/i915/display/intel_quirks.c | 8 +++++++
drivers/gpu/drm/i915/display/intel_quirks.h | 1 +
4 files changed, 32 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c
index 50ec0c3c7..36338e12f 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.c
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
@@ -226,6 +226,8 @@ int intel_display_driver_probe_noirq(struct intel_display *display)
if (ret)
goto cleanup_bios;
+ intel_init_quirks(display);
+
/* FIXME: completely on the wrong abstraction layer */
ret = intel_power_domains_init(display);
if (ret < 0)
@@ -267,8 +269,6 @@ int intel_display_driver_probe_noirq(struct intel_display *display)
if (ret)
goto cleanup_vga_client_pw_domain_dmc;
- intel_init_quirks(display);
-
intel_fbc_init(display);
return 0;
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index d3b8453a1..c589836cb 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -23,6 +23,7 @@
#include "intel_pcode.h"
#include "intel_pmdemand.h"
#include "intel_pps_regs.h"
+#include "intel_quirks.h"
#include "intel_snps_phy.h"
#include "skl_watermark.h"
#include "skl_watermark_regs.h"
@@ -482,6 +483,12 @@ intel_display_power_grab_async_put_ref(struct intel_display *display,
return ret;
}
+static const struct i915_power_well_instance *
+i915_power_well_instance(const struct i915_power_well *power_well)
+{
+ return &power_well->desc->instances->list[power_well->instance_idx];
+}
+
static void
__intel_display_power_get_domain(struct intel_display *display,
enum intel_display_power_domain domain)
@@ -493,7 +500,14 @@ __intel_display_power_get_domain(struct intel_display *display,
return;
for_each_power_domain_well(display, power_well, domain)
+ {
+ if (domain == POWER_DOMAIN_INIT &&
+ intel_has_quirk(display, QUIRK_NO_VLV_DISP_PW_DPIO_CMN_BC_INIT) &&
+ i915_power_well_instance(power_well)->id == VLV_DISP_PW_DPIO_CMN_BC)
+ continue;
+
intel_power_well_get(display, power_well);
+ }
power_domains->domain_use_count[domain]++;
}
@@ -589,7 +603,14 @@ __intel_display_power_put_domain(struct intel_display *display,
power_domains->domain_use_count[domain]--;
for_each_power_domain_well_reverse(display, power_well, domain)
+ {
+ if (domain == POWER_DOMAIN_INIT &&
+ intel_has_quirk(display, QUIRK_NO_VLV_DISP_PW_DPIO_CMN_BC_INIT) &&
+ i915_power_well_instance(power_well)->id == VLV_DISP_PW_DPIO_CMN_BC)
+ continue;
+
intel_power_well_put(display, power_well);
+ }
}
static void __intel_display_power_put(struct intel_display *display,
diff --git a/drivers/gpu/drm/i915/display/intel_quirks.c b/drivers/gpu/drm/i915/display/intel_quirks.c
index 8b30e9fd9..af2fa6b67 100644
--- a/drivers/gpu/drm/i915/display/intel_quirks.c
+++ b/drivers/gpu/drm/i915/display/intel_quirks.c
@@ -78,6 +78,12 @@ static void quirk_fw_sync_len(struct intel_dp *intel_dp)
drm_info(display->drm, "Applying Fast Wake sync pulse count quirk\n");
}
+static void quirk_no_vlv_disp_pw_dpio_cmn_bc_init(struct intel_display *display)
+{
+ intel_set_quirk(display, QUIRK_NO_VLV_DISP_PW_DPIO_CMN_BC_INIT);
+ drm_info(display->drm, "Applying no dpio-common-bc powerwell init quirk\n");
+}
+
struct intel_quirk {
int device;
int subsystem_vendor;
@@ -229,6 +235,8 @@ static struct intel_quirk intel_quirks[] = {
{ 0x3184, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time },
/* HP Notebook - 14-r206nv */
{ 0x0f31, 0x103c, 0x220f, quirk_invert_brightness },
+ /* Xiaomi Pad 2 - xiaomi-latte */
+ { 0x22b0, 0x1d72, 0x1502, quirk_no_vlv_disp_pw_dpio_cmn_bc_init },
};
static const struct intel_dpcd_quirk intel_dpcd_quirks[] = {
diff --git a/drivers/gpu/drm/i915/display/intel_quirks.h b/drivers/gpu/drm/i915/display/intel_quirks.h
index cafdebda7..6e7ea8c13 100644
--- a/drivers/gpu/drm/i915/display/intel_quirks.h
+++ b/drivers/gpu/drm/i915/display/intel_quirks.h
@@ -20,6 +20,7 @@ enum intel_quirk_id {
QUIRK_LVDS_SSC_DISABLE,
QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK,
QUIRK_FW_SYNC_LEN,
+ QUIRK_NO_VLV_DISP_PW_DPIO_CMN_BC_INIT,
};
void intel_init_quirks(struct intel_display *display);
--
2.39.5
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