mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 18:19:02 +00:00
ed1536e0b6
Deleted (upstreamed): generic/backport-5.15/890-v5.19-net-sfp-Add-tx-fault-workaround-for-Huawei-MA5671A-SFP-ON.patch [1] Other patches automatically rebased. [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.41&id=99858114a3b2c8f5f8707d9bbd46c50f547c87c0 Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
150 lines
4.5 KiB
Diff
150 lines
4.5 KiB
Diff
From 740955399f42caa6406761975656b8aa5b88a39c Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
Date: Thu, 25 Nov 2021 14:46:55 +0000
|
|
Subject: [PATCH] drm/vc4: Move HDMI reset to pm_resume
|
|
|
|
Pi0-3 have power domains attached to the pm_runtime hooks
|
|
for the HDMI block. Initialisation done in the reset called
|
|
from bind is therefore lost if all users of the domain are
|
|
suspended.
|
|
The VEC shares the same lowest level clock/power gating as
|
|
the HDMI block, so whilst that is enabled the block is never
|
|
actually powered down, but if it isn't enabled then we lose
|
|
the state.
|
|
|
|
Reset and initialise the HDMI block from pm_resume.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_hdmi.c | 61 ++++++++++++++++++-----------
|
|
drivers/gpu/drm/vc4/vc4_hdmi_regs.h | 4 +-
|
|
2 files changed, 41 insertions(+), 24 deletions(-)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
|
|
@@ -2195,7 +2195,6 @@ static int vc4_hdmi_cec_init(struct vc4_
|
|
struct platform_device *pdev = vc4_hdmi->pdev;
|
|
struct device *dev = &pdev->dev;
|
|
unsigned long flags;
|
|
- u32 value;
|
|
int ret;
|
|
|
|
if (!of_find_property(dev->of_node, "interrupts", NULL)) {
|
|
@@ -2214,15 +2213,6 @@ static int vc4_hdmi_cec_init(struct vc4_
|
|
cec_fill_conn_info_from_drm(&conn_info, &vc4_hdmi->connector);
|
|
cec_s_conn_info(vc4_hdmi->cec_adap, &conn_info);
|
|
|
|
- spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
|
|
- value = HDMI_READ(HDMI_CEC_CNTRL_1);
|
|
- /* Set the logical address to Unregistered */
|
|
- value |= VC4_HDMI_CEC_ADDR_MASK;
|
|
- HDMI_WRITE(HDMI_CEC_CNTRL_1, value);
|
|
- spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
|
|
-
|
|
- vc4_hdmi_cec_update_clk_div(vc4_hdmi);
|
|
-
|
|
if (vc4_hdmi->variant->external_irq_controller) {
|
|
ret = request_threaded_irq(platform_get_irq_byname(pdev, "cec-rx"),
|
|
vc4_cec_irq_handler_rx_bare,
|
|
@@ -2285,6 +2275,29 @@ static void vc4_hdmi_cec_exit(struct vc4
|
|
|
|
cec_unregister_adapter(vc4_hdmi->cec_adap);
|
|
}
|
|
+
|
|
+static int vc4_hdmi_cec_resume(struct vc4_hdmi *vc4_hdmi)
|
|
+{
|
|
+ unsigned long flags;
|
|
+ u32 value;
|
|
+
|
|
+ spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
|
|
+ value = HDMI_READ(HDMI_CEC_CNTRL_1);
|
|
+ /* Set the logical address to Unregistered */
|
|
+ value |= VC4_HDMI_CEC_ADDR_MASK;
|
|
+ HDMI_WRITE(HDMI_CEC_CNTRL_1, value);
|
|
+ spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
|
|
+
|
|
+ vc4_hdmi_cec_update_clk_div(vc4_hdmi);
|
|
+
|
|
+ if (!vc4_hdmi->variant->external_irq_controller) {
|
|
+ spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
|
|
+ HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, 0xffffffff);
|
|
+ spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
#else
|
|
static int vc4_hdmi_cec_init(struct vc4_hdmi *vc4_hdmi)
|
|
{
|
|
@@ -2293,6 +2306,10 @@ static int vc4_hdmi_cec_init(struct vc4_
|
|
|
|
static void vc4_hdmi_cec_exit(struct vc4_hdmi *vc4_hdmi) {};
|
|
|
|
+static void vc4_hdmi_cec_resume(struct vc4_hdmi *vc4_hdmi)
|
|
+{
|
|
+ return 0;
|
|
+}
|
|
#endif
|
|
|
|
static int vc4_hdmi_build_regset(struct vc4_hdmi *vc4_hdmi,
|
|
@@ -2527,6 +2544,15 @@ static int vc4_hdmi_runtime_resume(struc
|
|
if (ret)
|
|
return ret;
|
|
|
|
+ if (vc4_hdmi->variant->reset)
|
|
+ vc4_hdmi->variant->reset(vc4_hdmi);
|
|
+
|
|
+ ret = vc4_hdmi_cec_resume(vc4_hdmi);
|
|
+ if (ret) {
|
|
+ clk_disable_unprepare(vc4_hdmi->hsm_clock);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
return 0;
|
|
}
|
|
|
|
@@ -2617,20 +2643,11 @@ static int vc4_hdmi_bind(struct device *
|
|
if (ret)
|
|
goto err_put_ddc;
|
|
|
|
- /*
|
|
- * We need to have the device powered up at this point to call
|
|
- * our reset hook and for the CEC init.
|
|
- */
|
|
- ret = vc4_hdmi_runtime_resume(dev);
|
|
- if (ret)
|
|
- goto err_put_ddc;
|
|
-
|
|
- pm_runtime_get_noresume(dev);
|
|
- pm_runtime_set_active(dev);
|
|
pm_runtime_enable(dev);
|
|
|
|
- if (vc4_hdmi->variant->reset)
|
|
- vc4_hdmi->variant->reset(vc4_hdmi);
|
|
+ ret = pm_runtime_resume_and_get(dev);
|
|
+ if (ret)
|
|
+ goto err_put_ddc;
|
|
|
|
if ((of_device_is_compatible(dev->of_node, "brcm,bcm2711-hdmi0") ||
|
|
of_device_is_compatible(dev->of_node, "brcm,bcm2711-hdmi1")) &&
|
|
--- a/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
|
|
+++ b/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
|
|
@@ -417,7 +417,7 @@ static inline u32 vc4_hdmi_read(struct v
|
|
const struct vc4_hdmi_variant *variant = hdmi->variant;
|
|
void __iomem *base;
|
|
|
|
- WARN_ON(!pm_runtime_active(&hdmi->pdev->dev));
|
|
+ WARN_ON(pm_runtime_status_suspended(&hdmi->pdev->dev));
|
|
|
|
if (reg >= variant->num_registers) {
|
|
dev_warn(&hdmi->pdev->dev,
|
|
@@ -447,7 +447,7 @@ static inline void vc4_hdmi_write(struct
|
|
|
|
lockdep_assert_held(&hdmi->hw_lock);
|
|
|
|
- WARN_ON(!pm_runtime_active(&hdmi->pdev->dev));
|
|
+ WARN_ON(pm_runtime_status_suspended(&hdmi->pdev->dev));
|
|
|
|
if (reg >= variant->num_registers) {
|
|
dev_warn(&hdmi->pdev->dev,
|