linux-kernel - Re: [PATCH v4 03/16] drm: bridge: analogix/dp: split exynos dp driver to bridge dir

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Message-ID: <55E654A1.7010100@rock-chips.com>
Date:	Wed, 02 Sep 2015 09:45:05 +0800
From:	Yakir Yang <ykk@...k-chips.com>
To:	Heiko Stuebner <heiko@...ech.de>
CC:	Thierry Reding <treding@...dia.com>,
	Jingoo Han <jingoohan1@...il.com>,
	Inki Dae <inki.dae@...sung.com>, joe@...ches.com,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Mark Yao <mark.yao@...k-chips.com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	djkurtz@...omium.com, dianders@...omium.com, seanpaul@...omium.com,
	ajaynumb@...il.com, Andrzej Hajda <a.hajda@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	David Airlie <airlied@...ux.ie>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>,
	Andy Yan <andy.yan@...k-chips.com>,
	Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Kishon Vijay Abraham I <kishon@...com>,
	architt@...eaurora.org, robherring2@...il.com,
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...t.NULL.NULL, s.infradead.org@...L.NULL
Subject: Re: [PATCH v4 03/16] drm: bridge: analogix/dp: split exynos dp driver
 to bridge dir

Heiko,

在 09/02/2015 04:46 AM, Heiko Stuebner 写道:
> Am Dienstag, 1. September 2015, 13:49:58 schrieb Yakir Yang:
>> Split the dp core driver from exynos directory to bridge
>> directory, and rename the core driver to analogix_dp_*,
>> leave the platform code to analogix_dp-exynos.
>>
>> Signed-off-by: Yakir Yang <ykk@...k-chips.com>
> [...]
>
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c similarity index 50%
>> rename from drivers/gpu/drm/exynos/exynos_dp_core.c
>> rename to drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>> index bed0252..7d62f22 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> [...]
>
>>   	connector->polled = DRM_CONNECTOR_POLL_HPD;
>>
>>   	ret = drm_connector_init(dp->drm_dev, connector,
>> -				 &exynos_dp_connector_funcs,
>> +				 &analogix_dp_connector_funcs,
>>   				 DRM_MODE_CONNECTOR_eDP);
>>   	if (ret) {
>>   		DRM_ERROR("Failed to initialize connector with drm\n");
>>   		return ret;
>>   	}
>>
>> -	drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs);
>> +	drm_connector_helper_add(connector,
>> +				 &analogix_dp_connector_helper_funcs);
>>   	drm_connector_register(connector);
> this should only run on exynos, as we're doing all our connector registration
> in the core driver after all components are bound, so I guess something like
> the following is needed:
>
>         if (dp->plat_data && dp->plat_data->dev_type == EXYNOS_DP)
>                 drm_connector_register(connector);
>

Oh, good catch, thanks

>
>>   	drm_mode_connector_attach_encoder(connector, encoder);
>>
> [...]
>
>> @@ -1301,7 +1239,10 @@ static int exynos_dp_bind(struct device *dev, struct
>> device *master, void *data) if (IS_ERR(dp->reg_base))
>>   		return PTR_ERR(dp->reg_base);
>>
>> -	dp->hpd_gpio = of_get_named_gpio(dev->of_node, "samsung,hpd-gpio", 0);
>> +	dp->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0);
>> +	if (gpio_is_valid(dp->hpd_gpio))
> this should be !gpio_is_valid ... i.e. only check the old property if the new
> one is _not_ valid

Oh, much appreciate  ;)

- Yakir

>
>> +		dp->hpd_gpio = of_get_named_gpio(dev->of_node,
>> +						 "samsung,hpd-gpio", 0);
>>
>>   	if (gpio_is_valid(dp->hpd_gpio)) {
>>   		/*
>
>
>


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