Re: [PATCH] drm/tegra: Refactor CEC support

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On 12/10/18 5:34 PM, Thierry Reding wrote:
> From: Thierry Reding <treding@xxxxxxxxxx>
> 
> Most of the CEC support code already lives in the "output" library code.
> Move registration and unregistration to the library code as well to make
> use of the same code with HDMI on Tegra210 and later via the SOR.
> 
> Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>

Reviewed-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>

Thanks!

	Hans

> ---
>  drivers/gpu/drm/tegra/drm.h    |  2 +-
>  drivers/gpu/drm/tegra/hdmi.c   |  9 ---------
>  drivers/gpu/drm/tegra/output.c | 11 +++++++++--
>  3 files changed, 10 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h
> index 019862a41cb4..dbc9e11b0aec 100644
> --- a/drivers/gpu/drm/tegra/drm.h
> +++ b/drivers/gpu/drm/tegra/drm.h
> @@ -132,7 +132,7 @@ struct tegra_output {
>  	struct drm_panel *panel;
>  	struct i2c_adapter *ddc;
>  	const struct edid *edid;
> -	struct cec_notifier *notifier;
> +	struct cec_notifier *cec;
>  	unsigned int hpd_irq;
>  	int hpd_gpio;
>  	enum of_gpio_flags hpd_gpio_flags;
> diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
> index 0082468f703c..d19973945614 100644
> --- a/drivers/gpu/drm/tegra/hdmi.c
> +++ b/drivers/gpu/drm/tegra/hdmi.c
> @@ -22,8 +22,6 @@
>  
>  #include <sound/hda_verbs.h>
>  
> -#include <media/cec-notifier.h>
> -
>  #include "hdmi.h"
>  #include "drm.h"
>  #include "dc.h"
> @@ -1709,10 +1707,6 @@ static int tegra_hdmi_probe(struct platform_device *pdev)
>  		return PTR_ERR(hdmi->vdd);
>  	}
>  
> -	hdmi->output.notifier = cec_notifier_get(&pdev->dev);
> -	if (hdmi->output.notifier == NULL)
> -		return -ENOMEM;
> -
>  	hdmi->output.dev = &pdev->dev;
>  
>  	err = tegra_output_probe(&hdmi->output);
> @@ -1771,9 +1765,6 @@ static int tegra_hdmi_remove(struct platform_device *pdev)
>  
>  	tegra_output_remove(&hdmi->output);
>  
> -	if (hdmi->output.notifier)
> -		cec_notifier_put(hdmi->output.notifier);
> -
>  	return 0;
>  }
>  
> diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
> index c662efc7e413..9c2b9dad55c3 100644
> --- a/drivers/gpu/drm/tegra/output.c
> +++ b/drivers/gpu/drm/tegra/output.c
> @@ -36,7 +36,7 @@ int tegra_output_connector_get_modes(struct drm_connector *connector)
>  	else if (output->ddc)
>  		edid = drm_get_edid(connector, output->ddc);
>  
> -	cec_notifier_set_phys_addr_from_edid(output->notifier, edid);
> +	cec_notifier_set_phys_addr_from_edid(output->cec, edid);
>  	drm_connector_update_edid_property(connector, edid);
>  
>  	if (edid) {
> @@ -73,7 +73,7 @@ tegra_output_connector_detect(struct drm_connector *connector, bool force)
>  	}
>  
>  	if (status != connector_status_connected)
> -		cec_notifier_phys_addr_invalidate(output->notifier);
> +		cec_notifier_phys_addr_invalidate(output->cec);
>  
>  	return status;
>  }
> @@ -174,11 +174,18 @@ int tegra_output_probe(struct tegra_output *output)
>  		disable_irq(output->hpd_irq);
>  	}
>  
> +	output->cec = cec_notifier_get(output->dev);
> +	if (!output->cec)
> +		return -ENOMEM;
> +
>  	return 0;
>  }
>  
>  void tegra_output_remove(struct tegra_output *output)
>  {
> +	if (output->cec)
> +		cec_notifier_put(output->cec);
> +
>  	if (gpio_is_valid(output->hpd_gpio)) {
>  		free_irq(output->hpd_irq, output);
>  		gpio_free(output->hpd_gpio);
> 

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