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62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
152 lines
4.6 KiB
Diff
152 lines
4.6 KiB
Diff
From 9fa3342da883f6e111952768b36ca1df4d529660 Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Wed, 18 Dec 2019 11:30:54 +0100
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Subject: [PATCH] drm/vc4: hdmi: Introduce resource init and variant
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The HDMI controllers found in the BCM2711 has a pretty different clock and
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registers areas than found in the older BCM283x SoCs.
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Let's create a variant structure to store the various adjustments we'll
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need later on, and a function to get the resources needed for one
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particular version.
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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---
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drivers/gpu/drm/vc4/vc4_hdmi.c | 67 ++++++++++++++++++++++------------
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drivers/gpu/drm/vc4/vc4_hdmi.h | 10 +++++
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2 files changed, 54 insertions(+), 23 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
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@@ -1190,38 +1190,23 @@ static const struct cec_adap_ops vc4_hdm
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};
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#endif
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-static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
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+static int vc4_hdmi_init_resources(struct vc4_hdmi *vc4_hdmi)
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{
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-#ifdef CONFIG_DRM_VC4_HDMI_CEC
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- struct cec_connector_info conn_info;
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-#endif
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- struct platform_device *pdev = to_platform_device(dev);
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- struct drm_device *drm = dev_get_drvdata(master);
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- struct vc4_hdmi *vc4_hdmi;
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- struct drm_encoder *encoder;
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- struct device_node *ddc_node;
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- u32 value;
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- int ret;
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-
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- vc4_hdmi = devm_kzalloc(dev, sizeof(*vc4_hdmi), GFP_KERNEL);
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- if (!vc4_hdmi)
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- return -ENOMEM;
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-
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- vc4_hdmi->pdev = pdev;
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- encoder = &vc4_hdmi->encoder.base.base;
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- encoder->base.type = VC4_ENCODER_TYPE_HDMI0;
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+ struct platform_device *pdev = vc4_hdmi->pdev;
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+ struct device *dev = &pdev->dev;
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vc4_hdmi->hdmicore_regs = vc4_ioremap_regs(pdev, 0);
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if (IS_ERR(vc4_hdmi->hdmicore_regs))
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return PTR_ERR(vc4_hdmi->hdmicore_regs);
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+ vc4_hdmi->hdmi_regset.base = vc4_hdmi->hdmicore_regs;
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+ vc4_hdmi->hdmi_regset.regs = hdmi_regs;
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+ vc4_hdmi->hdmi_regset.nregs = ARRAY_SIZE(hdmi_regs);
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+
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vc4_hdmi->hd_regs = vc4_ioremap_regs(pdev, 1);
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if (IS_ERR(vc4_hdmi->hd_regs))
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return PTR_ERR(vc4_hdmi->hd_regs);
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- vc4_hdmi->hdmi_regset.base = vc4_hdmi->hdmicore_regs;
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- vc4_hdmi->hdmi_regset.regs = hdmi_regs;
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- vc4_hdmi->hdmi_regset.nregs = ARRAY_SIZE(hdmi_regs);
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vc4_hdmi->hd_regset.base = vc4_hdmi->hd_regs;
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vc4_hdmi->hd_regset.regs = hd_regs;
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vc4_hdmi->hd_regset.nregs = ARRAY_SIZE(hd_regs);
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@@ -1231,12 +1216,44 @@ static int vc4_hdmi_bind(struct device *
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DRM_ERROR("Failed to get pixel clock\n");
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return PTR_ERR(vc4_hdmi->pixel_clock);
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}
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+
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vc4_hdmi->hsm_clock = devm_clk_get(dev, "hdmi");
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if (IS_ERR(vc4_hdmi->hsm_clock)) {
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DRM_ERROR("Failed to get HDMI state machine clock\n");
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return PTR_ERR(vc4_hdmi->hsm_clock);
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}
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+ return 0;
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+}
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+
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+static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
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+{
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+#ifdef CONFIG_DRM_VC4_HDMI_CEC
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+ struct cec_connector_info conn_info;
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+#endif
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+ struct platform_device *pdev = to_platform_device(dev);
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+ struct drm_device *drm = dev_get_drvdata(master);
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+ const struct vc4_hdmi_variant *variant;
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+ struct vc4_hdmi *vc4_hdmi;
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+ struct drm_encoder *encoder;
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+ struct device_node *ddc_node;
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+ u32 value;
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+ int ret;
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+
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+ vc4_hdmi = devm_kzalloc(dev, sizeof(*vc4_hdmi), GFP_KERNEL);
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+ if (!vc4_hdmi)
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+ return -ENOMEM;
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+
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+ vc4_hdmi->pdev = pdev;
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+ variant = of_device_get_match_data(dev);
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+ vc4_hdmi->variant = variant;
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+ vc4_hdmi->encoder.base.type = VC4_ENCODER_TYPE_HDMI0;
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+ encoder = &vc4_hdmi->encoder.base.base;
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+
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+ ret = variant->init_resources(vc4_hdmi);
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+ if (ret)
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+ return ret;
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+
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ddc_node = of_parse_phandle(dev->of_node, "ddc", 0);
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if (!ddc_node) {
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DRM_ERROR("Failed to find ddc node in device tree\n");
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@@ -1397,8 +1414,12 @@ static int vc4_hdmi_dev_remove(struct pl
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return 0;
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}
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+static const struct vc4_hdmi_variant bcm2835_variant = {
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+ .init_resources = vc4_hdmi_init_resources,
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+};
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+
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static const struct of_device_id vc4_hdmi_dt_match[] = {
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- { .compatible = "brcm,bcm2835-hdmi" },
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+ { .compatible = "brcm,bcm2835-hdmi", .data = &bcm2835_variant },
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{}
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};
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--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
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@@ -21,6 +21,15 @@ to_vc4_hdmi_encoder(struct drm_encoder *
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return container_of(encoder, struct vc4_hdmi_encoder, base.base);
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}
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+struct vc4_hdmi;
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+
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+struct vc4_hdmi_variant {
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+ /* Callback to get the resources (memory region, interrupts,
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+ * clocks, etc) for that variant.
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+ */
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+ int (*init_resources)(struct vc4_hdmi *vc4_hdmi);
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+};
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+
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/* HDMI audio information */
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struct vc4_hdmi_audio {
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struct snd_soc_card card;
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@@ -37,6 +46,7 @@ struct vc4_hdmi_audio {
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/* General HDMI hardware state. */
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struct vc4_hdmi {
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struct platform_device *pdev;
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+ const struct vc4_hdmi_variant *variant;
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struct vc4_hdmi_encoder encoder;
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struct drm_connector connector;
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