mirror of https://gitee.com/openkylin/linux.git
drm/meson: meson_dw_hdmi: add bridge and switch to drm_bridge_funcs
Switch the dw-hdmi driver to drm_bridge_funcs by implementing a new local bridge, connecting it to the dw-hdmi bridge, then implement the atomic_get_input_bus_fmts/atomic_get_output_bus_fmts. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Jernej Škrabec <jernej.skrabec@siol.net> Link: https://patchwork.freedesktop.org/patch/msgid/20200304104052.17196-8-narmstrong@baylibre.com
This commit is contained in:
Neil Armstrong
parent
0fad640bbf
commit
f43aa58432
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@ -16,6 +16,7 @@
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#include <drm/bridge/dw_hdmi.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_bridge.h>
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#include <drm/drm_device.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_probe_helper.h>
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@ -135,6 +136,7 @@ struct meson_dw_hdmi_data {
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struct meson_dw_hdmi {
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struct drm_encoder encoder;
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struct drm_bridge bridge;
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struct dw_hdmi_plat_data dw_plat_data;
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struct meson_drm *priv;
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struct device *dev;
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@ -151,6 +153,8 @@ struct meson_dw_hdmi {
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};
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#define encoder_to_meson_dw_hdmi(x) \
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container_of(x, struct meson_dw_hdmi, encoder)
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#define bridge_to_meson_dw_hdmi(x) \
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container_of(x, struct meson_dw_hdmi, bridge)
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static inline int dw_hdmi_is_compatible(struct meson_dw_hdmi *dw_hdmi,
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const char *compat)
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@ -368,7 +372,7 @@ static inline void meson_dw_hdmi_phy_reset(struct meson_dw_hdmi *dw_hdmi)
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}
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static void dw_hdmi_set_vclk(struct meson_dw_hdmi *dw_hdmi,
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struct drm_display_mode *mode)
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const struct drm_display_mode *mode)
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{
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struct meson_drm *priv = dw_hdmi->priv;
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int vic = drm_match_cea_mode(mode);
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@ -663,6 +667,10 @@ dw_hdmi_mode_valid(struct drm_connector *connector,
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/* Encoder */
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static const u32 meson_dw_hdmi_out_bus_fmts[] = {
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MEDIA_BUS_FMT_YUV8_1X24,
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};
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static void meson_venc_hdmi_encoder_destroy(struct drm_encoder *encoder)
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{
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drm_encoder_cleanup(encoder);
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@ -672,16 +680,43 @@ static const struct drm_encoder_funcs meson_venc_hdmi_encoder_funcs = {
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.destroy = meson_venc_hdmi_encoder_destroy,
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};
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static int meson_venc_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
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static u32 *
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meson_venc_hdmi_encoder_get_inp_bus_fmts(struct drm_bridge *bridge,
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struct drm_bridge_state *bridge_state,
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struct drm_crtc_state *crtc_state,
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struct drm_connector_state *conn_state,
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u32 output_fmt,
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unsigned int *num_input_fmts)
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{
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u32 *input_fmts = NULL;
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if (output_fmt == meson_dw_hdmi_out_bus_fmts[0]) {
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*num_input_fmts = 1;
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input_fmts = kcalloc(*num_input_fmts,
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sizeof(*input_fmts),
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GFP_KERNEL);
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if (!input_fmts)
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return NULL;
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input_fmts[0] = output_fmt;
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} else {
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*num_input_fmts = 0;
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}
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return input_fmts;
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}
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static int meson_venc_hdmi_encoder_atomic_check(struct drm_bridge *bridge,
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struct drm_bridge_state *bridge_state,
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struct drm_crtc_state *crtc_state,
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struct drm_connector_state *conn_state)
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{
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return 0;
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}
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static void meson_venc_hdmi_encoder_disable(struct drm_encoder *encoder)
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static void meson_venc_hdmi_encoder_disable(struct drm_bridge *bridge)
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{
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struct meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder);
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struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
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struct meson_drm *priv = dw_hdmi->priv;
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DRM_DEBUG_DRIVER("\n");
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@ -693,9 +728,9 @@ static void meson_venc_hdmi_encoder_disable(struct drm_encoder *encoder)
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writel_relaxed(0, priv->io_base + _REG(ENCP_VIDEO_EN));
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}
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static void meson_venc_hdmi_encoder_enable(struct drm_encoder *encoder)
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static void meson_venc_hdmi_encoder_enable(struct drm_bridge *bridge)
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{
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struct meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder);
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struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
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struct meson_drm *priv = dw_hdmi->priv;
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DRM_DEBUG_DRIVER("%s\n", priv->venc.hdmi_use_enci ? "VENCI" : "VENCP");
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@ -706,11 +741,11 @@ static void meson_venc_hdmi_encoder_enable(struct drm_encoder *encoder)
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writel_relaxed(1, priv->io_base + _REG(ENCP_VIDEO_EN));
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}
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static void meson_venc_hdmi_encoder_mode_set(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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static void meson_venc_hdmi_encoder_mode_set(struct drm_bridge *bridge,
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const struct drm_display_mode *mode,
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const struct drm_display_mode *adjusted_mode)
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{
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struct meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder);
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struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
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struct meson_drm *priv = dw_hdmi->priv;
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int vic = drm_match_cea_mode(mode);
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@ -726,12 +761,15 @@ static void meson_venc_hdmi_encoder_mode_set(struct drm_encoder *encoder,
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writel_relaxed(0, priv->io_base + _REG(VPU_HDMI_FMT_CTRL));
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}
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static const struct drm_encoder_helper_funcs
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meson_venc_hdmi_encoder_helper_funcs = {
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.atomic_check = meson_venc_hdmi_encoder_atomic_check,
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.disable = meson_venc_hdmi_encoder_disable,
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.enable = meson_venc_hdmi_encoder_enable,
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.mode_set = meson_venc_hdmi_encoder_mode_set,
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static const struct drm_bridge_funcs meson_venc_hdmi_encoder_bridge_funcs = {
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.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
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.atomic_get_input_bus_fmts = meson_venc_hdmi_encoder_get_inp_bus_fmts,
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.atomic_reset = drm_atomic_helper_bridge_reset,
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.atomic_check = meson_venc_hdmi_encoder_atomic_check,
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.enable = meson_venc_hdmi_encoder_enable,
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.disable = meson_venc_hdmi_encoder_disable,
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.mode_set = meson_venc_hdmi_encoder_mode_set,
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};
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/* DW HDMI Regmap */
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@ -852,6 +890,7 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
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struct drm_device *drm = data;
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struct meson_drm *priv = drm->dev_private;
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struct dw_hdmi_plat_data *dw_plat_data;
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struct drm_bridge *next_bridge;
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struct drm_encoder *encoder;
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struct resource *res;
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int irq;
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@ -953,8 +992,6 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
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/* Encoder */
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drm_encoder_helper_add(encoder, &meson_venc_hdmi_encoder_helper_funcs);
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ret = drm_encoder_init(drm, encoder, &meson_venc_hdmi_encoder_funcs,
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DRM_MODE_ENCODER_TMDS, "meson_hdmi");
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if (ret) {
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@ -962,6 +999,9 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
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return ret;
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}
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meson_dw_hdmi->bridge.funcs = &meson_venc_hdmi_encoder_bridge_funcs;
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drm_bridge_attach(encoder, &meson_dw_hdmi->bridge, NULL, 0);
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encoder->possible_crtcs = BIT(0);
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DRM_DEBUG_DRIVER("encoder initialized\n");
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@ -984,11 +1024,16 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
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platform_set_drvdata(pdev, meson_dw_hdmi);
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meson_dw_hdmi->hdmi = dw_hdmi_bind(pdev, encoder,
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&meson_dw_hdmi->dw_plat_data);
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meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev,
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&meson_dw_hdmi->dw_plat_data);
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if (IS_ERR(meson_dw_hdmi->hdmi))
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return PTR_ERR(meson_dw_hdmi->hdmi);
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next_bridge = of_drm_find_bridge(pdev->dev.of_node);
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if (next_bridge)
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drm_bridge_attach(encoder, next_bridge,
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&meson_dw_hdmi->bridge, 0);
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DRM_DEBUG_DRIVER("HDMI controller initialized\n");
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return 0;
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