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Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0582-drm-vc4-hdmi-Introduce-resource-init-and-variant.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0582-drm-vc4-hdmi-Introduce-resource-init-and-variant.patch151
1 files changed, 151 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0582-drm-vc4-hdmi-Introduce-resource-init-and-variant.patch b/target/linux/bcm27xx/patches-5.4/950-0582-drm-vc4-hdmi-Introduce-resource-init-and-variant.patch
new file mode 100644
index 0000000000..82fae40246
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0582-drm-vc4-hdmi-Introduce-resource-init-and-variant.patch
@@ -0,0 +1,151 @@
+From 9fa3342da883f6e111952768b36ca1df4d529660 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 18 Dec 2019 11:30:54 +0100
+Subject: [PATCH] drm/vc4: hdmi: Introduce resource init and variant
+
+The HDMI controllers found in the BCM2711 has a pretty different clock and
+registers areas than found in the older BCM283x SoCs.
+
+Let's create a variant structure to store the various adjustments we'll
+need later on, and a function to get the resources needed for one
+particular version.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 67 ++++++++++++++++++++++------------
+ drivers/gpu/drm/vc4/vc4_hdmi.h | 10 +++++
+ 2 files changed, 54 insertions(+), 23 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1189,38 +1189,23 @@ static const struct cec_adap_ops vc4_hdm
+ };
+ #endif
+
+-static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
++static int vc4_hdmi_init_resources(struct vc4_hdmi *vc4_hdmi)
+ {
+-#ifdef CONFIG_DRM_VC4_HDMI_CEC
+- struct cec_connector_info conn_info;
+-#endif
+- struct platform_device *pdev = to_platform_device(dev);
+- struct drm_device *drm = dev_get_drvdata(master);
+- struct vc4_hdmi *vc4_hdmi;
+- struct drm_encoder *encoder;
+- struct device_node *ddc_node;
+- u32 value;
+- int ret;
+-
+- vc4_hdmi = devm_kzalloc(dev, sizeof(*vc4_hdmi), GFP_KERNEL);
+- if (!vc4_hdmi)
+- return -ENOMEM;
+-
+- vc4_hdmi->pdev = pdev;
+- encoder = &vc4_hdmi->encoder.base.base;
+- encoder->base.type = VC4_ENCODER_TYPE_HDMI0;
++ struct platform_device *pdev = vc4_hdmi->pdev;
++ struct device *dev = &pdev->dev;
+
+ vc4_hdmi->hdmicore_regs = vc4_ioremap_regs(pdev, 0);
+ if (IS_ERR(vc4_hdmi->hdmicore_regs))
+ return PTR_ERR(vc4_hdmi->hdmicore_regs);
+
++ vc4_hdmi->hdmi_regset.base = vc4_hdmi->hdmicore_regs;
++ vc4_hdmi->hdmi_regset.regs = hdmi_regs;
++ vc4_hdmi->hdmi_regset.nregs = ARRAY_SIZE(hdmi_regs);
++
+ vc4_hdmi->hd_regs = vc4_ioremap_regs(pdev, 1);
+ if (IS_ERR(vc4_hdmi->hd_regs))
+ return PTR_ERR(vc4_hdmi->hd_regs);
+
+- vc4_hdmi->hdmi_regset.base = vc4_hdmi->hdmicore_regs;
+- vc4_hdmi->hdmi_regset.regs = hdmi_regs;
+- vc4_hdmi->hdmi_regset.nregs = ARRAY_SIZE(hdmi_regs);
+ vc4_hdmi->hd_regset.base = vc4_hdmi->hd_regs;
+ vc4_hdmi->hd_regset.regs = hd_regs;
+ vc4_hdmi->hd_regset.nregs = ARRAY_SIZE(hd_regs);
+@@ -1230,12 +1215,44 @@ static int vc4_hdmi_bind(struct device *
+ DRM_ERROR("Failed to get pixel clock\n");
+ return PTR_ERR(vc4_hdmi->pixel_clock);
+ }
++
+ vc4_hdmi->hsm_clock = devm_clk_get(dev, "hdmi");
+ if (IS_ERR(vc4_hdmi->hsm_clock)) {
+ DRM_ERROR("Failed to get HDMI state machine clock\n");
+ return PTR_ERR(vc4_hdmi->hsm_clock);
+ }
+
++ return 0;
++}
++
++static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
++{
++#ifdef CONFIG_DRM_VC4_HDMI_CEC
++ struct cec_connector_info conn_info;
++#endif
++ struct platform_device *pdev = to_platform_device(dev);
++ struct drm_device *drm = dev_get_drvdata(master);
++ const struct vc4_hdmi_variant *variant;
++ struct vc4_hdmi *vc4_hdmi;
++ struct drm_encoder *encoder;
++ struct device_node *ddc_node;
++ u32 value;
++ int ret;
++
++ vc4_hdmi = devm_kzalloc(dev, sizeof(*vc4_hdmi), GFP_KERNEL);
++ if (!vc4_hdmi)
++ return -ENOMEM;
++
++ vc4_hdmi->pdev = pdev;
++ variant = of_device_get_match_data(dev);
++ vc4_hdmi->variant = variant;
++ vc4_hdmi->encoder.base.type = VC4_ENCODER_TYPE_HDMI0;
++ encoder = &vc4_hdmi->encoder.base.base;
++
++ ret = variant->init_resources(vc4_hdmi);
++ if (ret)
++ return ret;
++
+ ddc_node = of_parse_phandle(dev->of_node, "ddc", 0);
+ if (!ddc_node) {
+ DRM_ERROR("Failed to find ddc node in device tree\n");
+@@ -1396,8 +1413,12 @@ static int vc4_hdmi_dev_remove(struct pl
+ return 0;
+ }
+
++static const struct vc4_hdmi_variant bcm2835_variant = {
++ .init_resources = vc4_hdmi_init_resources,
++};
++
+ static const struct of_device_id vc4_hdmi_dt_match[] = {
+- { .compatible = "brcm,bcm2835-hdmi" },
++ { .compatible = "brcm,bcm2835-hdmi", .data = &bcm2835_variant },
+ {}
+ };
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -21,6 +21,15 @@ to_vc4_hdmi_encoder(struct drm_encoder *
+ return container_of(encoder, struct vc4_hdmi_encoder, base.base);
+ }
+
++struct vc4_hdmi;
++
++struct vc4_hdmi_variant {
++ /* Callback to get the resources (memory region, interrupts,
++ * clocks, etc) for that variant.
++ */
++ int (*init_resources)(struct vc4_hdmi *vc4_hdmi);
++};
++
+ /* HDMI audio information */
+ struct vc4_hdmi_audio {
+ struct snd_soc_card card;
+@@ -37,6 +46,7 @@ struct vc4_hdmi_audio {
+ /* General HDMI hardware state. */
+ struct vc4_hdmi {
+ struct platform_device *pdev;
++ const struct vc4_hdmi_variant *variant;
+
+ struct vc4_hdmi_encoder encoder;
+ struct drm_connector connector;