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Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0586-drm-vc4-hdmi-Add-PHY-RNG-enable-disable-function.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0586-drm-vc4-hdmi-Add-PHY-RNG-enable-disable-function.patch104
1 files changed, 104 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0586-drm-vc4-hdmi-Add-PHY-RNG-enable-disable-function.patch b/target/linux/bcm27xx/patches-5.4/950-0586-drm-vc4-hdmi-Add-PHY-RNG-enable-disable-function.patch
new file mode 100644
index 0000000000..cea17a621e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0586-drm-vc4-hdmi-Add-PHY-RNG-enable-disable-function.patch
@@ -0,0 +1,104 @@
+From ddf78df1db8752247e89a68231338a194e5dc52b Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 19 Dec 2019 17:22:24 +0100
+Subject: [PATCH] drm/vc4: hdmi: Add PHY RNG enable / disable function
+
+Let's continue the implementation of hooks for the parts that change in the
+BCM2711 SoC with the PHY RNG setup.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 15 +++++++++------
+ drivers/gpu/drm/vc4/vc4_hdmi.h | 8 ++++++++
+ drivers/gpu/drm/vc4/vc4_hdmi_phy.c | 15 +++++++++++++++
+ 3 files changed, 32 insertions(+), 6 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -765,9 +765,9 @@ static int vc4_hdmi_audio_trigger(struct
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ vc4_hdmi_set_audio_infoframe(encoder);
+- HDMI_WRITE(HDMI_TX_PHY_CTL_0,
+- HDMI_READ(HDMI_TX_PHY_CTL_0) &
+- ~VC4_HDMI_TX_PHY_RNG_PWRDN);
++
++ if (vc4_hdmi->variant->phy_rng_enable)
++ vc4_hdmi->variant->phy_rng_enable(vc4_hdmi);
+
+ HDMI_WRITE(HDMI_MAI_CTL,
+ VC4_SET_FIELD(vc4_hdmi->audio.channels,
+@@ -779,9 +779,10 @@ static int vc4_hdmi_audio_trigger(struct
+ VC4_HD_MAI_CTL_DLATE |
+ VC4_HD_MAI_CTL_ERRORE |
+ VC4_HD_MAI_CTL_ERRORF);
+- HDMI_WRITE(HDMI_TX_PHY_CTL_0,
+- HDMI_READ(HDMI_TX_PHY_CTL_0) |
+- VC4_HDMI_TX_PHY_RNG_PWRDN);
++
++ if (vc4_hdmi->variant->phy_rng_disable)
++ vc4_hdmi->variant->phy_rng_disable(vc4_hdmi);
++
+ break;
+ default:
+ break;
+@@ -1428,6 +1429,8 @@ static const struct vc4_hdmi_variant bcm
+ .reset = vc4_hdmi_reset,
+ .phy_init = vc4_hdmi_phy_init,
+ .phy_disable = vc4_hdmi_phy_disable,
++ .phy_rng_enable = vc4_hdmi_phy_rng_enable,
++ .phy_rng_disable = vc4_hdmi_phy_rng_disable,
+ };
+
+ static const struct of_device_id vc4_hdmi_dt_match[] = {
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -47,6 +47,12 @@ struct vc4_hdmi_variant {
+
+ /* Callback to disable the PHY */
+ void (*phy_disable)(struct vc4_hdmi *vc4_hdmi);
++
++ /* Callback to enable the RNG in the PHY */
++ void (*phy_rng_enable)(struct vc4_hdmi *vc4_hdmi);
++
++ /* Callback to disable the RNG in the PHY */
++ void (*phy_rng_disable)(struct vc4_hdmi *vc4_hdmi);
+ };
+
+ /* HDMI audio information */
+@@ -107,5 +113,7 @@ encoder_to_vc4_hdmi(struct drm_encoder *
+ void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
+ struct drm_display_mode *mode);
+ void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
++void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
++void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
+
+ #endif /* _VC4_HDMI_H_ */
+--- a/drivers/gpu/drm/vc4/vc4_hdmi_phy.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi_phy.c
+@@ -7,6 +7,7 @@
+ */
+
+ #include "vc4_hdmi.h"
++#include "vc4_regs.h"
+ #include "vc4_hdmi_regs.h"
+
+ void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, struct drm_display_mode *mode)
+@@ -23,3 +24,17 @@ void vc4_hdmi_phy_disable(struct vc4_hdm
+ {
+ HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0xf << 16);
+ }
++
++void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi)
++{
++ HDMI_WRITE(HDMI_TX_PHY_CTL_0,
++ HDMI_READ(HDMI_TX_PHY_CTL_0) &
++ ~VC4_HDMI_TX_PHY_RNG_PWRDN);
++}
++
++void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi)
++{
++ HDMI_WRITE(HDMI_TX_PHY_CTL_0,
++ HDMI_READ(HDMI_TX_PHY_CTL_0) |
++ VC4_HDMI_TX_PHY_RNG_PWRDN);
++}