| 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
| ||
|
Message-ID: <20190827105327.3df8ec37@collabora.com>
Date: Tue, 27 Aug 2019 10:53:27 +0200
From: Boris Brezillon <boris.brezillon@...labora.com>
To: Neil Armstrong <narmstrong@...libre.com>
Cc: a.hajda@...sung.com, Laurent.pinchart@...asonboard.com,
jonas@...boo.se, jernej.skrabec@...l.net,
linux-amlogic@...ts.infradead.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC v2 2/8] drm/meson: meson_dw_hdmi: switch to
drm_bridge_funcs
On Tue, 27 Aug 2019 10:14:19 +0200
Neil Armstrong <narmstrong@...libre.com> wrote:
> Switch the dw-hdmi driver to drm_bridge_funcs, and implement the
> atomic_get_input_bus_fmts/atomic_get_output_bus_fmts.
>
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
> ---
> drivers/gpu/drm/meson/meson_dw_hdmi.c | 67 +++++++++++++++++++++------
> 1 file changed, 54 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> index f893ebd0b799..333583ef3ab9 100644
> --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
> +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> @@ -368,7 +368,7 @@ static inline void meson_dw_hdmi_phy_reset(struct meson_dw_hdmi *dw_hdmi)
> }
>
> static void dw_hdmi_set_vclk(struct meson_dw_hdmi *dw_hdmi,
> - struct drm_display_mode *mode)
> + const struct drm_display_mode *mode)
> {
> struct meson_drm *priv = dw_hdmi->priv;
> int vic = drm_match_cea_mode(mode);
> @@ -663,6 +663,10 @@ dw_hdmi_mode_valid(struct drm_connector *connector,
>
> /* Encoder */
>
> +static const u32 meson_dw_hdmi_out_bus_fmts[] = {
> + MEDIA_BUS_FMT_YUV8_1X24,
> +};
> +
> static void meson_venc_hdmi_encoder_destroy(struct drm_encoder *encoder)
> {
> drm_encoder_cleanup(encoder);
> @@ -672,15 +676,50 @@ static const struct drm_encoder_funcs meson_venc_hdmi_encoder_funcs = {
> .destroy = meson_venc_hdmi_encoder_destroy,
> };
>
> -static int meson_venc_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
> +static void
> +meson_venc_hdmi_encoder_get_out_bus_fmts(struct drm_bridge *bridge,
> + struct drm_bridge_state *bridge_state,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state,
> + unsigned int *num_output_fmts,
> + u32 *output_fmts)
> +{
> + *num_output_fmts = ARRAY_SIZE(meson_dw_hdmi_out_bus_fmts);
> +
> + if (output_fmts)
> + memcpy(output_fmts, meson_dw_hdmi_out_bus_fmts,
> + ARRAY_SIZE(meson_dw_hdmi_out_bus_fmts));
> +}
> +
> +static void
> +meson_venc_hdmi_encoder_get_inp_bus_fmts(struct drm_bridge *bridge,
> + struct drm_bridge_state *bridge_state,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state,
> + u32 output_fmt,
> + unsigned int *num_input_fmts,
> + u32 *input_fmts)
> +{
> + if (output_fmt == meson_dw_hdmi_out_bus_fmts[0]) {
> + *num_input_fmts = 1;
> + if (input_fmts)
> + input_fmts[0] = output_fmt;
> + }
> + else
> + *num_input_fmts = 0;
nitpick:
} else {
*num_input_fmts = 0;
}
> +}
> +
> +static int meson_venc_hdmi_encoder_atomic_check(struct drm_bridge *bridge,
> + struct drm_bridge_state *bridge_state,
> struct drm_crtc_state *crtc_state,
> struct drm_connector_state *conn_state)
> {
> return 0;
> }
This hook is optional, you don't need this stub.
Looks good otherwise:
Reviewed-by: Boris Brezillon <boris.brezillon@...labora.com>
>
> -static void meson_venc_hdmi_encoder_disable(struct drm_encoder *encoder)
> +static void meson_venc_hdmi_encoder_disable(struct drm_bridge *bridge)
> {
> + struct drm_encoder *encoder = bridge_to_encoder(bridge);
> struct meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder);
> struct meson_drm *priv = dw_hdmi->priv;
>
> @@ -693,8 +732,9 @@ static void meson_venc_hdmi_encoder_disable(struct drm_encoder *encoder)
> writel_relaxed(0, priv->io_base + _REG(ENCP_VIDEO_EN));
> }
>
> -static void meson_venc_hdmi_encoder_enable(struct drm_encoder *encoder)
> +static void meson_venc_hdmi_encoder_enable(struct drm_bridge *bridge)
> {
> + struct drm_encoder *encoder = bridge_to_encoder(bridge);
> struct meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder);
> struct meson_drm *priv = dw_hdmi->priv;
>
> @@ -706,10 +746,11 @@ static void meson_venc_hdmi_encoder_enable(struct drm_encoder *encoder)
> writel_relaxed(1, priv->io_base + _REG(ENCP_VIDEO_EN));
> }
>
> -static void meson_venc_hdmi_encoder_mode_set(struct drm_encoder *encoder,
> - struct drm_display_mode *mode,
> - struct drm_display_mode *adjusted_mode)
> +static void meson_venc_hdmi_encoder_mode_set(struct drm_bridge *bridge,
> + const struct drm_display_mode *mode,
> + const struct drm_display_mode *adjusted_mode)
> {
> + struct drm_encoder *encoder = bridge_to_encoder(bridge);
> struct meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder);
> struct meson_drm *priv = dw_hdmi->priv;
> int vic = drm_match_cea_mode(mode);
> @@ -726,11 +767,12 @@ static void meson_venc_hdmi_encoder_mode_set(struct drm_encoder *encoder,
> writel_relaxed(0, priv->io_base + _REG(VPU_HDMI_FMT_CTRL));
> }
>
> -static const struct drm_encoder_helper_funcs
> - meson_venc_hdmi_encoder_helper_funcs = {
> - .atomic_check = meson_venc_hdmi_encoder_atomic_check,
> - .disable = meson_venc_hdmi_encoder_disable,
> +static const struct drm_bridge_funcs meson_venc_hdmi_encoder_bridge_funcs = {
> .enable = meson_venc_hdmi_encoder_enable,
> + .disable = meson_venc_hdmi_encoder_disable,
> + .atomic_check = meson_venc_hdmi_encoder_atomic_check,
> + .atomic_get_output_bus_fmts = meson_venc_hdmi_encoder_get_out_bus_fmts,
> + .atomic_get_input_bus_fmts = meson_venc_hdmi_encoder_get_inp_bus_fmts,
> .mode_set = meson_venc_hdmi_encoder_mode_set,
> };
>
> @@ -912,8 +954,7 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
>
> /* Encoder */
>
> - drm_encoder_helper_add(encoder, &meson_venc_hdmi_encoder_helper_funcs);
> -
> + encoder->bridge.funcs = &meson_venc_hdmi_encoder_bridge_funcs;
> ret = drm_encoder_init(drm, encoder, &meson_venc_hdmi_encoder_funcs,
> DRM_MODE_ENCODER_TMDS, "meson_hdmi");
> if (ret) {
Powered by blists - more mailing lists