lkml.org 
[lkml]   [2020]   [Apr]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 80/91] drm/vc4: hdmi: Move CEC init to its own function
Date
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>
---
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 aae5b10a2d11..1c612db1d22c 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1172,6 +1172,67 @@ 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,
@@ -1249,9 +1310,6 @@ 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
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm = dev_get_drvdata(master);
const struct vc4_hdmi_variant *variant;
@@ -1339,43 +1397,13 @@ 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,
@@ -1383,12 +1411,10 @@ 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:
@@ -1413,7 +1439,7 @@ 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);

--
git-series 0.9.1
\
 
 \ /
  Last update: 2020-04-24 17:39    [W:0.545 / U:11.352 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site