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openwrt/target/linux/bcm27xx/patches-5.15/950-0898-drm-vc4-Consolidate-Hardware-Revision-Check.patch
Álvaro Fernández Rojas 20ea6adbf1 bcm27xx: add support for linux v5.15 
Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2022-05-17 15:11:22 +02:00

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From def27ddc4bcd560f7e7a53d7aecc4ba4f78921e1 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Thu, 21 Apr 2022 14:27:11 +0200
Subject: [PATCH] drm/vc4: Consolidate Hardware Revision Check
A new generation of controller has been introduced with the
BCM2711/RaspberryPi4. This generation needs a bunch of quirks, and over
time we've piled on a number of checks in most parts of the drivers.
All these checks are performed several times, and are not always
consistent. Let's create a single, global, variable to hold it and use
it everywhere.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_crtc.c | 10 +++++-----
drivers/gpu/drm/vc4/vc4_drv.c | 4 ++++
drivers/gpu/drm/vc4/vc4_drv.h | 6 +++---
drivers/gpu/drm/vc4/vc4_hvs.c | 26 +++++++++++++-------------
drivers/gpu/drm/vc4/vc4_kms.c | 12 +++++-------
drivers/gpu/drm/vc4/vc4_plane.c | 13 ++++++-------
6 files changed, 36 insertions(+), 35 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -256,7 +256,7 @@ static u32 vc4_get_fifo_full_level(struc
* Removing 1 from the FIFO full level however
* seems to completely remove that issue.
*/
- if (!vc4->hvs->hvs5)
+ if (!vc4->is_vc5)
return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX - 1;
return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX;
@@ -425,7 +425,7 @@ static void vc4_crtc_config_pv(struct dr
if (is_dsi)
CRTC_WRITE(PV_HACT_ACT, mode->hdisplay * pixel_rep);
- if (vc4->hvs->hvs5)
+ if (vc4->is_vc5)
CRTC_WRITE(PV_MUX_CFG,
VC4_SET_FIELD(PV_MUX_CFG_RGB_PIXEL_MUX_MODE_NO_SWAP,
PV_MUX_CFG_RGB_PIXEL_MUX_MODE));
@@ -883,7 +883,7 @@ static int vc4_async_set_fence_cb(struct
struct vc4_dev *vc4 = to_vc4_dev(dev);
struct dma_fence *fence;
- if (!vc4->hvs->hvs5) {
+ if (!vc4->is_vc5) {
struct vc4_bo *bo = to_vc4_bo(&cma_bo->base);
return vc4_queue_seqno_cb(dev, &flip_state->cb, bo->seqno,
@@ -1225,13 +1225,13 @@ int vc4_crtc_init(struct drm_device *drm
crtc_funcs, NULL);
drm_crtc_helper_add(crtc, crtc_helper_funcs);
- if (!vc4->hvs->hvs5) {
+ if (!vc4->is_vc5) {
drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r));
drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
}
- if (!vc4->hvs->hvs5) {
+ if (!vc4->is_vc5) {
/* We support CTM, but only for one CRTC at a time. It's therefore
* implemented as private driver state in vc4_kms, not here.
*/
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -246,10 +246,13 @@ static int vc4_drm_bind(struct device *d
struct vc4_dev *vc4;
struct device_node *node;
struct drm_crtc *crtc;
+ bool is_vc5;
int ret = 0;
dev->coherent_dma_mask = DMA_BIT_MASK(32);
+ is_vc5 = of_device_is_compatible(dev->of_node, "brcm,bcm2711-vc5");
+
/* If VC4 V3D is missing, don't advertise render nodes. */
node = of_find_matching_node_and_match(NULL, vc4_v3d_dt_match, NULL);
if (!node || !of_device_is_available(node))
@@ -269,6 +272,7 @@ static int vc4_drm_bind(struct device *d
vc4 = devm_drm_dev_alloc(dev, &vc4_drm_driver, struct vc4_dev, base);
if (IS_ERR(vc4))
return PTR_ERR(vc4);
+ vc4->is_vc5 = is_vc5;
drm = &vc4->base;
platform_set_drvdata(pdev, drm);
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -75,6 +75,8 @@ struct vc4_perfmon {
struct vc4_dev {
struct drm_device base;
+ bool is_vc5;
+
unsigned int irq;
bool firmware_kms;
@@ -321,6 +323,7 @@ struct vc4_v3d {
};
struct vc4_hvs {
+ struct vc4_dev *vc4;
struct platform_device *pdev;
void __iomem *regs;
u32 __iomem *dlist;
@@ -339,9 +342,6 @@ struct vc4_hvs {
struct debugfs_regset32 regset;
- /* HVS version 5 flag, therefore requires updated dlist structures */
- bool hvs5;
-
/*
* Even if HDMI0 on the RPi4 can output modes requiring a pixel
* rate higher than 297MHz, it needs some adjustments in the
--- a/drivers/gpu/drm/vc4/vc4_hvs.c
+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
@@ -413,10 +413,11 @@ u8 vc4_hvs_get_fifo_frame_count(struct v
int vc4_hvs_get_fifo_from_output(struct vc4_hvs *hvs, unsigned int output)
{
+ struct vc4_dev *vc4 = hvs->vc4;
u32 reg;
int ret;
- if (!hvs->hvs5)
+ if (!vc4->is_vc5)
return output;
switch (output) {
@@ -466,6 +467,7 @@ int vc4_hvs_get_fifo_from_output(struct
static int vc4_hvs_init_channel(struct vc4_hvs *hvs, struct drm_crtc *crtc,
struct drm_display_mode *mode, bool oneshot)
{
+ struct vc4_dev *vc4 = hvs->vc4;
struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(crtc->state);
unsigned int chan = vc4_crtc_state->assigned_channel;
@@ -484,7 +486,7 @@ static int vc4_hvs_init_channel(struct v
*/
dispctrl = SCALER_DISPCTRLX_ENABLE;
- if (!hvs->hvs5)
+ if (!vc4->is_vc5)
dispctrl |= VC4_SET_FIELD(mode->hdisplay,
SCALER_DISPCTRLX_WIDTH) |
VC4_SET_FIELD(mode->vdisplay,
@@ -514,7 +516,7 @@ static int vc4_hvs_init_channel(struct v
/* Reload the LUT, since the SRAMs would have been disabled if
* all CRTCs had SCALER_DISPBKGND_GAMMA unset at once.
*/
- if (!hvs->hvs5)
+ if (!vc4->is_vc5)
vc4_hvs_lut_load(hvs, vc4_crtc);
else
vc5_hvs_lut_load(hvs, vc4_crtc);
@@ -553,7 +555,7 @@ static int vc4_hvs_gamma_check(struct dr
struct drm_device *dev = crtc->dev;
struct vc4_dev *vc4 = to_vc4_dev(dev);
- if (!vc4->hvs->hvs5)
+ if (!vc4->is_vc5)
return 0;
if (!crtc_state->color_mgmt_changed)
@@ -780,7 +782,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
u32 dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(channel));
if (crtc->state->gamma_lut) {
- if (!vc4->hvs->hvs5) {
+ if (!vc4->is_vc5) {
vc4_hvs_update_gamma_lut(hvs, vc4_crtc);
dispbkgndx |= SCALER_DISPBKGND_GAMMA;
} else {
@@ -797,7 +799,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
* should already be disabling/enabling the pipeline
* when gamma changes.
*/
- if (!vc4->hvs->hvs5)
+ if (!vc4->is_vc5)
dispbkgndx &= ~SCALER_DISPBKGND_GAMMA;
}
HVS_WRITE(SCALER_DISPBKGNDX(channel), dispbkgndx);
@@ -883,11 +885,9 @@ static int vc4_hvs_bind(struct device *d
if (!hvs)
return -ENOMEM;
+ hvs->vc4 = vc4;
hvs->pdev = pdev;
- if (of_device_is_compatible(pdev->dev.of_node, "brcm,bcm2711-hvs"))
- hvs->hvs5 = true;
-
hvs->regs = vc4_ioremap_regs(pdev, 0);
if (IS_ERR(hvs->regs))
return PTR_ERR(hvs->regs);
@@ -896,7 +896,7 @@ static int vc4_hvs_bind(struct device *d
hvs->regset.regs = hvs_regs;
hvs->regset.nregs = ARRAY_SIZE(hvs_regs);
- if (hvs->hvs5) {
+ if (vc4->is_vc5) {
unsigned long max_rate;
hvs->core_clk = devm_clk_get(&pdev->dev, NULL);
@@ -916,7 +916,7 @@ static int vc4_hvs_bind(struct device *d
}
}
- if (!hvs->hvs5)
+ if (!vc4->is_vc5)
hvs->dlist = hvs->regs + SCALER_DLIST_START;
else
hvs->dlist = hvs->regs + SCALER5_DLIST_START;
@@ -937,7 +937,7 @@ static int vc4_hvs_bind(struct device *d
* between planes when they don't overlap on the screen, but
* for now we just allocate globally.
*/
- if (!hvs->hvs5)
+ if (!vc4->is_vc5)
/* 48k words of 2x12-bit pixels */
drm_mm_init(&hvs->lbm_mm, 0, 48 * 1024);
else
@@ -1008,7 +1008,7 @@ static int vc4_hvs_bind(struct device *d
NULL);
vc4_debugfs_add_file(drm, "hvs_dlists", vc4_hvs_debugfs_dlist,
NULL);
- if (hvs->hvs5)
+ if (vc4->is_vc5)
vc4_debugfs_add_file(drm, "hvs_gamma", vc5_hvs_debugfs_gamma,
NULL);
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -395,7 +395,7 @@ static void vc4_atomic_commit_tail(struc
old_hvs_state->fifo_state[channel].pending_commit = NULL;
}
- if (vc4->hvs && vc4->hvs->hvs5) {
+ if (vc4->is_vc5 && !vc4->firmware_kms) {
unsigned long state_rate = max(old_hvs_state->core_clock_rate,
new_hvs_state->core_clock_rate);
unsigned long core_rate = clamp_t(unsigned long, state_rate,
@@ -409,7 +409,7 @@ static void vc4_atomic_commit_tail(struc
vc4_ctm_commit(vc4, state);
if (!vc4->firmware_kms) {
- if (vc4->hvs && vc4->hvs->hvs5)
+ if (vc4->is_vc5)
vc5_hvs_pv_muxing_commit(vc4, state);
else
vc4_hvs_pv_muxing_commit(vc4, state);
@@ -427,7 +427,7 @@ static void vc4_atomic_commit_tail(struc
drm_atomic_helper_cleanup_planes(dev, state);
- if (vc4->hvs && vc4->hvs->hvs5) {
+ if (vc4->is_vc5 && !vc4->firmware_kms) {
unsigned long core_rate = min_t(unsigned long,
max_clock_rate,
new_hvs_state->core_clock_rate);
@@ -995,8 +995,6 @@ static const struct drm_mode_config_func
int vc4_kms_load(struct drm_device *dev)
{
struct vc4_dev *vc4 = to_vc4_dev(dev);
- bool is_vc5 = of_device_is_compatible(dev->dev->of_node,
- "brcm,bcm2711-vc5");
int ret;
/*
@@ -1004,7 +1002,7 @@ int vc4_kms_load(struct drm_device *dev)
* the BCM2711, but the load tracker computations are used for
* the core clock rate calculation.
*/
- if (!is_vc5) {
+ if (!vc4->is_vc5) {
/* Start with the load tracker enabled. Can be
* disabled through the debugfs load_tracker file.
*/
@@ -1020,7 +1018,7 @@ int vc4_kms_load(struct drm_device *dev)
return ret;
}
- if (is_vc5) {
+ if (vc4->is_vc5) {
dev->mode_config.max_width = 7680;
dev->mode_config.max_height = 7680;
} else {
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -542,10 +542,10 @@ static u32 vc4_lbm_size(struct drm_plane
}
/* Align it to 64 or 128 (hvs5) bytes */
- lbm = roundup(lbm, vc4->hvs->hvs5 ? 128 : 64);
+ lbm = roundup(lbm, vc4->is_vc5 ? 128 : 64);
/* Each "word" of the LBM memory contains 2 or 4 (hvs5) pixels */
- lbm /= vc4->hvs->hvs5 ? 4 : 2;
+ lbm /= vc4->is_vc5 ? 4 : 2;
return lbm;
}
@@ -664,7 +664,7 @@ static int vc4_plane_allocate_lbm(struct
ret = drm_mm_insert_node_generic(&vc4->hvs->lbm_mm,
&vc4_state->lbm,
lbm_size,
- vc4->hvs->hvs5 ? 64 : 32,
+ vc4->is_vc5 ? 64 : 32,
0, 0);
spin_unlock_irqrestore(&vc4->hvs->mm_lock, irqflags);
@@ -1039,7 +1039,7 @@ static int vc4_plane_mode_set(struct drm
mix_plane_alpha = state->alpha != DRM_BLEND_ALPHA_OPAQUE &&
fb->format->has_alpha;
- if (!vc4->hvs->hvs5) {
+ if (!vc4->is_vc5) {
/* Control word */
vc4_dlist_write(vc4_state,
SCALER_CTL0_VALID |
@@ -1570,14 +1570,13 @@ static const struct drm_plane_funcs vc4_
struct drm_plane *vc4_plane_init(struct drm_device *dev,
enum drm_plane_type type)
{
+ struct vc4_dev *vc4 = to_vc4_dev(dev);
struct drm_plane *plane = NULL;
struct vc4_plane *vc4_plane;
u32 formats[ARRAY_SIZE(hvs_formats)];
int num_formats = 0;
int ret = 0;
unsigned i;
- bool hvs5 = of_device_is_compatible(dev->dev->of_node,
- "brcm,bcm2711-vc5");
static const uint64_t modifiers[] = {
DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED,
DRM_FORMAT_MOD_BROADCOM_SAND128,
@@ -1593,7 +1592,7 @@ struct drm_plane *vc4_plane_init(struct
return ERR_PTR(-ENOMEM);
for (i = 0; i < ARRAY_SIZE(hvs_formats); i++) {
- if (!hvs_formats[i].hvs5_only || hvs5) {
+ if (!hvs_formats[i].hvs5_only || vc4->is_vc5) {
formats[num_formats] = hvs_formats[i].drm;
num_formats++;
}
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