openwrt/target/linux/bcm27xx/patches-6.1/950-0966-drm-vc4-txp-Introduce-structure-to-deal-with-revisio.patch

From a68e8ffc3314612b0d00d491c8cdd61ae1d9af4e Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Tue, 25 Apr 2023 10:12:32 +0200
Subject: [PATCH] drm/vc4: txp: Introduce structure to deal with revision
 differences

The BCM2712 will have several TXP with small differences. Let's add a
structure tied to the compatible to deal with those differences.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/gpu/drm/vc4/tests/vc4_mock.c |  4 ++--
 drivers/gpu/drm/vc4/vc4_drv.h        |  6 +++++-
 drivers/gpu/drm/vc4/vc4_txp.c        | 23 ++++++++++++++++-------
 3 files changed, 23 insertions(+), 10 deletions(-)

--- a/drivers/gpu/drm/vc4/tests/vc4_mock.c
+++ b/drivers/gpu/drm/vc4/tests/vc4_mock.c
@@ -51,7 +51,7 @@ struct vc4_mock_desc {
 
 static const struct vc4_mock_desc vc4_mock =
 	VC4_MOCK_DESC(
-		VC4_MOCK_CRTC_DESC(&vc4_txp_crtc_data,
+		VC4_MOCK_CRTC_DESC(&vc4_txp_data.base,
 				   VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_TXP,
 							DRM_MODE_ENCODER_VIRTUAL,
 							DRM_MODE_CONNECTOR_WRITEBACK)),
@@ -77,7 +77,7 @@ static const struct vc4_mock_desc vc4_mo
 
 static const struct vc4_mock_desc vc5_mock =
 	VC4_MOCK_DESC(
-		VC4_MOCK_CRTC_DESC(&vc4_txp_crtc_data,
+		VC4_MOCK_CRTC_DESC(&vc4_txp_data.base,
 				   VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_TXP,
 							DRM_MODE_ENCODER_VIRTUAL,
 							DRM_MODE_CONNECTOR_WRITEBACK)),
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -561,7 +561,11 @@ struct vc4_crtc_data {
 	int hvs_output;
 };
 
-extern const struct vc4_crtc_data vc4_txp_crtc_data;
+struct vc4_txp_data {
+	struct vc4_crtc_data	base;
+};
+
+extern const struct vc4_txp_data vc4_txp_data;
 
 struct vc4_pv_data {
 	struct vc4_crtc_data	base;
--- a/drivers/gpu/drm/vc4/vc4_txp.c
+++ b/drivers/gpu/drm/vc4/vc4_txp.c
@@ -159,6 +159,7 @@
 
 struct vc4_txp {
 	struct vc4_crtc	base;
+	const struct vc4_txp_data *data;
 
 	struct platform_device *pdev;
 
@@ -488,17 +489,20 @@ static irqreturn_t vc4_txp_interrupt(int
 	return IRQ_HANDLED;
 }
 
-const struct vc4_crtc_data vc4_txp_crtc_data = {
-	.name = "txp",
-	.debugfs_name = "txp_regs",
-	.hvs_available_channels = BIT(2),
-	.hvs_output = 2,
+const struct vc4_txp_data vc4_txp_data = {
+	.base = {
+		.name = "txp",
+		.debugfs_name = "txp_regs",
+		.hvs_available_channels = BIT(2),
+		.hvs_output = 2,
+	},
 };
 
 static int vc4_txp_bind(struct device *dev, struct device *master, void *data)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct drm_device *drm = dev_get_drvdata(master);
+	const struct vc4_txp_data *txp_data;
 	struct vc4_encoder *vc4_encoder;
 	struct drm_encoder *encoder;
 	struct vc4_crtc *vc4_crtc;
@@ -513,6 +517,11 @@ static int vc4_txp_bind(struct device *d
 	if (!txp)
 		return -ENOMEM;
 
+	txp_data = of_device_get_match_data(dev);
+	if (!txp_data)
+		return -ENODEV;
+
+	txp->data = txp_data;
 	txp->pdev = pdev;
 	txp->regs = vc4_ioremap_regs(pdev, 0);
 	if (IS_ERR(txp->regs))
@@ -523,7 +532,7 @@ static int vc4_txp_bind(struct device *d
 	vc4_crtc->regset.regs = txp_regs;
 	vc4_crtc->regset.nregs = ARRAY_SIZE(txp_regs);
 
-	ret = vc4_crtc_init(drm, pdev, vc4_crtc, &vc4_txp_crtc_data,
+	ret = vc4_crtc_init(drm, pdev, vc4_crtc, &txp_data->base,
 			    &vc4_txp_crtc_funcs, &vc4_txp_crtc_helper_funcs, true);
 	if (ret)
 		return ret;
@@ -584,7 +593,7 @@ static int vc4_txp_remove(struct platfor
 }
 
 static const struct of_device_id vc4_txp_dt_match[] = {
-	{ .compatible = "brcm,bcm2835-txp" },
+	{ .compatible = "brcm,bcm2835-txp", .data = &vc4_txp_data },
 	{ /* sentinel */ },
 };