Commit f43aa584 authored by Neil Armstrong's avatar Neil Armstrong

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: default avatarNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: default avatarJernej Škrabec <jernej.skrabec@siol.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200304104052.17196-8-narmstrong@baylibre.com
parent 0fad640b
......@@ -16,6 +16,7 @@
#include <drm/bridge/dw_hdmi.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_device.h>
#include <drm/drm_edid.h>
#include <drm/drm_probe_helper.h>
......@@ -135,6 +136,7 @@ struct meson_dw_hdmi_data {
struct meson_dw_hdmi {
struct drm_encoder encoder;
struct drm_bridge bridge;
struct dw_hdmi_plat_data dw_plat_data;
struct meson_drm *priv;
struct device *dev;
......@@ -151,6 +153,8 @@ struct meson_dw_hdmi {
};
#define encoder_to_meson_dw_hdmi(x) \
container_of(x, struct meson_dw_hdmi, encoder)
#define bridge_to_meson_dw_hdmi(x) \
container_of(x, struct meson_dw_hdmi, bridge)
static inline int dw_hdmi_is_compatible(struct meson_dw_hdmi *dw_hdmi,
const char *compat)
......@@ -368,7 +372,7 @@ 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 +667,10 @@ 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);
......@@ -672,16 +680,43 @@ 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 u32 *
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 = NULL;
if (output_fmt == meson_dw_hdmi_out_bus_fmts[0]) {
*num_input_fmts = 1;
input_fmts = kcalloc(*num_input_fmts,
sizeof(*input_fmts),
GFP_KERNEL);
if (!input_fmts)
return NULL;
input_fmts[0] = output_fmt;
} else {
*num_input_fmts = 0;
}
return input_fmts;
}
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;
}
static void meson_venc_hdmi_encoder_disable(struct drm_encoder *encoder)
static void meson_venc_hdmi_encoder_disable(struct drm_bridge *bridge)
{
struct meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder);
struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
struct meson_drm *priv = dw_hdmi->priv;
DRM_DEBUG_DRIVER("\n");
......@@ -693,9 +728,9 @@ 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 meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder);
struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
struct meson_drm *priv = dw_hdmi->priv;
DRM_DEBUG_DRIVER("%s\n", priv->venc.hdmi_use_enci ? "VENCI" : "VENCP");
......@@ -706,11 +741,11 @@ 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 meson_dw_hdmi *dw_hdmi = encoder_to_meson_dw_hdmi(encoder);
struct meson_dw_hdmi *dw_hdmi = bridge_to_meson_dw_hdmi(bridge);
struct meson_drm *priv = dw_hdmi->priv;
int vic = drm_match_cea_mode(mode);
......@@ -726,11 +761,14 @@ 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 = {
static const struct drm_bridge_funcs meson_venc_hdmi_encoder_bridge_funcs = {
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
.atomic_get_input_bus_fmts = meson_venc_hdmi_encoder_get_inp_bus_fmts,
.atomic_reset = drm_atomic_helper_bridge_reset,
.atomic_check = meson_venc_hdmi_encoder_atomic_check,
.disable = meson_venc_hdmi_encoder_disable,
.enable = meson_venc_hdmi_encoder_enable,
.disable = meson_venc_hdmi_encoder_disable,
.mode_set = meson_venc_hdmi_encoder_mode_set,
};
......@@ -852,6 +890,7 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
struct drm_device *drm = data;
struct meson_drm *priv = drm->dev_private;
struct dw_hdmi_plat_data *dw_plat_data;
struct drm_bridge *next_bridge;
struct drm_encoder *encoder;
struct resource *res;
int irq;
......@@ -953,8 +992,6 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
/* Encoder */
drm_encoder_helper_add(encoder, &meson_venc_hdmi_encoder_helper_funcs);
ret = drm_encoder_init(drm, encoder, &meson_venc_hdmi_encoder_funcs,
DRM_MODE_ENCODER_TMDS, "meson_hdmi");
if (ret) {
......@@ -962,6 +999,9 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
return ret;
}
meson_dw_hdmi->bridge.funcs = &meson_venc_hdmi_encoder_bridge_funcs;
drm_bridge_attach(encoder, &meson_dw_hdmi->bridge, NULL, 0);
encoder->possible_crtcs = BIT(0);
DRM_DEBUG_DRIVER("encoder initialized\n");
......@@ -984,11 +1024,16 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
platform_set_drvdata(pdev, meson_dw_hdmi);
meson_dw_hdmi->hdmi = dw_hdmi_bind(pdev, encoder,
meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev,
&meson_dw_hdmi->dw_plat_data);
if (IS_ERR(meson_dw_hdmi->hdmi))
return PTR_ERR(meson_dw_hdmi->hdmi);
next_bridge = of_drm_find_bridge(pdev->dev.of_node);
if (next_bridge)
drm_bridge_attach(encoder, next_bridge,
&meson_dw_hdmi->bridge, 0);
DRM_DEBUG_DRIVER("HDMI controller initialized\n");
return 0;
......
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