linux-kernel - Re: [PATCH v1 1/2] drm/bridge/synopsys: dsi: add power on/off optional phy ops

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <50f33b3f-1d64-0855-3d58-6eb965fab41b@st.com>
Date:   Mon, 27 May 2019 12:53:30 +0000
From:   Philippe CORNU <philippe.cornu@...com>
To:     Yannick FERTRE <yannick.fertre@...com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        "Heiko Stuebner" <heiko@...ech.de>,
        Sam Ravnborg <sam@...nborg.org>,
        Nickey Yang <nickey.yang@...k-chips.com>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Vincent ABRIOU <vincent.abriou@...com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 1/2] drm/bridge/synopsys: dsi: add power on/off
 optional phy ops

Hi Yannick,
and thank you for your patch.

Tested successfully on stm32f too.

Reviewed-by: Philippe Cornu <philippe.cornu@...com>
Tested-by: Philippe Cornu <philippe.cornu@...com>

Philippe :-)

On 5/27/19 12:21 PM, Yannick Fertré wrote:
> Add power on & off optional physical operation functions, helpful to
> program specific registers of the DSI physical part.
> 
> Signed-off-by: Yannick Fertré <yannick.fertre@...com>
> ---
>   drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 8 ++++++++
>   include/drm/bridge/dw_mipi_dsi.h              | 2 ++
>   2 files changed, 10 insertions(+)
> 
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> index e915ae8..5bb676f 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> @@ -775,6 +775,10 @@ static void dw_mipi_dsi_clear_err(struct dw_mipi_dsi *dsi)
>   static void dw_mipi_dsi_bridge_post_disable(struct drm_bridge *bridge)
>   {
>   	struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge);
> +	const struct dw_mipi_dsi_phy_ops *phy_ops = dsi->plat_data->phy_ops;
> +
> +	if (phy_ops->power_off)
> +		phy_ops->power_off(dsi->plat_data->priv_data);
>   
>   	/*
>   	 * Switch to command mode before panel-bridge post_disable &
> @@ -874,11 +878,15 @@ static void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge,
>   static void dw_mipi_dsi_bridge_enable(struct drm_bridge *bridge)
>   {
>   	struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge);
> +	const struct dw_mipi_dsi_phy_ops *phy_ops = dsi->plat_data->phy_ops;
>   
>   	/* Switch to video mode for panel-bridge enable & panel enable */
>   	dw_mipi_dsi_set_mode(dsi, MIPI_DSI_MODE_VIDEO);
>   	if (dsi->slave)
>   		dw_mipi_dsi_set_mode(dsi->slave, MIPI_DSI_MODE_VIDEO);
> +
> +	if (phy_ops->power_on)
> +		phy_ops->power_on(dsi->plat_data->priv_data);
>   }
>   
>   static enum drm_mode_status
> diff --git a/include/drm/bridge/dw_mipi_dsi.h b/include/drm/bridge/dw_mipi_dsi.h
> index 7d3dd69..df6eda6 100644
> --- a/include/drm/bridge/dw_mipi_dsi.h
> +++ b/include/drm/bridge/dw_mipi_dsi.h
> @@ -14,6 +14,8 @@ struct dw_mipi_dsi;
>   
>   struct dw_mipi_dsi_phy_ops {
>   	int (*init)(void *priv_data);
> +	void (*power_on)(void *priv_data);
> +	void (*power_off)(void *priv_data);
>   	int (*get_lane_mbps)(void *priv_data,
>   			     const struct drm_display_mode *mode,
>   			     unsigned long mode_flags, u32 lanes, u32 format,
>