From 34110ec57f3c7e84b43583db7ff0a79df7ff807a Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Thu, 3 Sep 2020 10:01:31 +0200
Subject: drm/vc4: hdmi: Move CEC init to its own function
Git-commit: c0791e08380117c2d52e63f0e03d73610ce07858
Patch-mainline: v5.10-rc1
References: jsc#SLE-15318

The CEC init code was put directly into the bind function, which was quite
inconsistent with how the audio support was done, and would prevent us from
further changes to skip that initialisation entirely.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://patchwork.freedesktop.org/patch/msgid/21f4717e076291522d0784a7fd3774d8e97eaf01.1599120059.git-series.maxime@cerno.tech
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 108 ++++++++++++++++++++-------------
 1 file changed, 67 insertions(+), 41 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index cd0523ed47f4..a17d10478c50 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1171,6 +1171,67 @@ static const struct cec_adap_ops vc4_hdmi_cec_adap_ops = {
 	.adap_log_addr = vc4_hdmi_cec_adap_log_addr,
 	.adap_transmit = vc4_hdmi_cec_adap_transmit,
 };
+
+static int vc4_hdmi_cec_init(struct vc4_hdmi *vc4_hdmi)
+{
+	struct cec_connector_info conn_info;
+	struct platform_device *pdev = vc4_hdmi->pdev;
+	u32 value;
+	int ret;
+
+	vc4_hdmi->cec_adap = cec_allocate_adapter(&vc4_hdmi_cec_adap_ops,
+						  vc4_hdmi, "vc4",
+						  CEC_CAP_DEFAULTS |
+						  CEC_CAP_CONNECTOR_INFO, 1);
+	ret = PTR_ERR_OR_ZERO(vc4_hdmi->cec_adap);
+	if (ret < 0)
+		return ret;
+
+	cec_fill_conn_info_from_drm(&conn_info, &vc4_hdmi->connector);
+	cec_s_conn_info(vc4_hdmi->cec_adap, &conn_info);
+
+	HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, 0xffffffff);
+	value = HDMI_READ(HDMI_CEC_CNTRL_1);
+	value &= ~VC4_HDMI_CEC_DIV_CLK_CNT_MASK;
+	/*
+	 * Set the logical address to Unregistered and set the clock
+	 * divider: the hsm_clock rate and this divider setting will
+	 * give a 40 kHz CEC clock.
+	 */
+	value |= VC4_HDMI_CEC_ADDR_MASK |
+		 (4091 << VC4_HDMI_CEC_DIV_CLK_CNT_SHIFT);
+	HDMI_WRITE(HDMI_CEC_CNTRL_1, value);
+	ret = devm_request_threaded_irq(&pdev->dev, platform_get_irq(pdev, 0),
+					vc4_cec_irq_handler,
+					vc4_cec_irq_handler_thread, 0,
+					"vc4 hdmi cec", vc4_hdmi);
+	if (ret)
+		goto err_delete_cec_adap;
+
+	ret = cec_register_adapter(vc4_hdmi->cec_adap, &pdev->dev);
+	if (ret < 0)
+		goto err_delete_cec_adap;
+
+	return 0;
+
+err_delete_cec_adap:
+	cec_delete_adapter(vc4_hdmi->cec_adap);
+
+	return ret;
+}
+
+static void vc4_hdmi_cec_exit(struct vc4_hdmi *vc4_hdmi)
+{
+	cec_unregister_adapter(vc4_hdmi->cec_adap);
+}
+#else
+static int vc4_hdmi_cec_init(struct vc4_hdmi *vc4_hdmi)
+{
+	return 0;
+}
+
+static void vc4_hdmi_cec_exit(struct vc4_hdmi *vc4_hdmi) {};
+
 #endif
 
 static int vc4_hdmi_build_regset(struct vc4_hdmi *vc4_hdmi,
@@ -1250,9 +1311,6 @@ static int vc4_hdmi_init_resources(struct vc4_hdmi *vc4_hdmi)
 
 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
 	const struct vc4_hdmi_variant *variant = of_device_get_match_data(dev);
 	struct platform_device *pdev = to_platform_device(dev);
 	struct drm_device *drm = dev_get_drvdata(master);
@@ -1332,43 +1390,13 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 	if (ret)
 		goto err_destroy_encoder;
 
-#ifdef CONFIG_DRM_VC4_HDMI_CEC
-	vc4_hdmi->cec_adap = cec_allocate_adapter(&vc4_hdmi_cec_adap_ops,
-						  vc4_hdmi, "vc4",
-						  CEC_CAP_DEFAULTS |
-						  CEC_CAP_CONNECTOR_INFO, 1);
-	ret = PTR_ERR_OR_ZERO(vc4_hdmi->cec_adap);
-	if (ret < 0)
-		goto err_destroy_conn;
-
-	cec_fill_conn_info_from_drm(&conn_info, &vc4_hdmi->connector);
-	cec_s_conn_info(vc4_hdmi->cec_adap, &conn_info);
-
-	HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, 0xffffffff);
-	value = HDMI_READ(HDMI_CEC_CNTRL_1);
-	value &= ~VC4_HDMI_CEC_DIV_CLK_CNT_MASK;
-	/*
-	 * Set the logical address to Unregistered and set the clock
-	 * divider: the hsm_clock rate and this divider setting will
-	 * give a 40 kHz CEC clock.
-	 */
-	value |= VC4_HDMI_CEC_ADDR_MASK |
-		 (4091 << VC4_HDMI_CEC_DIV_CLK_CNT_SHIFT);
-	HDMI_WRITE(HDMI_CEC_CNTRL_1, value);
-	ret = devm_request_threaded_irq(dev, platform_get_irq(pdev, 0),
-					vc4_cec_irq_handler,
-					vc4_cec_irq_handler_thread, 0,
-					"vc4 hdmi cec", vc4_hdmi);
+	ret = vc4_hdmi_cec_init(vc4_hdmi);
 	if (ret)
-		goto err_delete_cec_adap;
-	ret = cec_register_adapter(vc4_hdmi->cec_adap, dev);
-	if (ret < 0)
-		goto err_delete_cec_adap;
-#endif
+		goto err_destroy_conn;
 
 	ret = vc4_hdmi_audio_init(vc4_hdmi);
 	if (ret)
-		goto err_destroy_encoder;
+		goto err_free_cec;
 
 	vc4_debugfs_add_file(drm, variant->debugfs_name,
 			     vc4_hdmi_debugfs_regs,
@@ -1376,12 +1404,10 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 
 	return 0;
 
-#ifdef CONFIG_DRM_VC4_HDMI_CEC
-err_delete_cec_adap:
-	cec_delete_adapter(vc4_hdmi->cec_adap);
+err_free_cec:
+	vc4_hdmi_cec_exit(vc4_hdmi);
 err_destroy_conn:
 	vc4_hdmi_connector_destroy(&vc4_hdmi->connector);
-#endif
 err_destroy_encoder:
 	drm_encoder_cleanup(encoder);
 err_unprepare_hsm:
@@ -1422,7 +1448,7 @@ static void vc4_hdmi_unbind(struct device *dev, struct device *master,
 	kfree(vc4_hdmi->hdmi_regset.regs);
 	kfree(vc4_hdmi->hd_regset.regs);
 
-	cec_unregister_adapter(vc4_hdmi->cec_adap);
+	vc4_hdmi_cec_exit(vc4_hdmi);
 	vc4_hdmi_connector_destroy(&vc4_hdmi->connector);
 	drm_encoder_cleanup(&vc4_hdmi->encoder.base.base);
 
-- 
2.29.2