[PATCH 82/89] drm/vc4: hdmi: Move CEC init to its own function

[Maxime Ripard]

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 at cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 102 +++++++++++++++++++++-------------
 1 file changed, 64 insertions(+), 38 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index a98661c12c24..f7fd1914aec7 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1163,6 +1163,64 @@ 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)
+{
+	int ret;
+
+	vc4_hdmi->cec_adap = cec_allocate_adapter(&vc4_hdmi_cec_adap_ops,
+					      vc4, "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, hdmi->connector);
+	cec_s_conn_info(hdmi->cec_adap, &conn_info);
+
+	HDMI_WRITE(HDMI_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);
+	if (ret)
+		goto err_delete_cec_adap;
+
+	ret = cec_register_adapter(vc4_hdmi->cec_adap, vc4_hdmi);
+	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,
@@ -1330,43 +1388,13 @@ 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, "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, hdmi->connector);
-	cec_s_conn_info(hdmi->cec_adap, &conn_info);
-
-	HDMI_WRITE(HDMI_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, vc4_hdmi);
-	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->id ? "hdmi1_regs" : "hdmi_regs",
@@ -1375,12 +1403,10 @@ 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:
 	vc4_hdmi_encoder_destroy(encoder);
 err_unprepare_hsm:
@@ -1405,7 +1431,7 @@ 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);
 	vc4_hdmi_encoder_destroy(&vc4_hdmi->encoder.base.base);
 
-- 
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