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drm/bridge: maxim-max96755f: Add drm_connector support

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Signed-off-by: Guochun Huang <hero.huang@rock-chips.com>
Change-Id: Ie88633da1e20a74768ffb3617ee5baf8d8f325dc
This commit is contained in:
Guochun Huang
2022-06-03 09:34:41 +00:00
committed by Tao Huang
parent 4648602e6f
commit eca9d7b1be
1 changed files with 80 additions and 14 deletions
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94
drivers/gpu/drm/bridge/maxim-max96755f.c
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@@ -25,6 +25,8 @@
struct max96755f_bridge {
struct drm_bridge bridge;
struct drm_bridge *next_bridge;
struct drm_connector connector;
struct drm_panel *panel;
struct device *dev;
struct regmap *regmap;
@@ -39,8 +41,40 @@ struct max96755f_bridge {
#define to_max96755f_bridge(x) container_of(x, struct max96755f_bridge, x)
static int max96755f_bridge_connector_get_modes(struct drm_connector *connector)
{
struct max96755f_bridge *ser = to_max96755f_bridge(connector);
if (ser->next_bridge)
return drm_bridge_get_modes(ser->next_bridge, connector);
return drm_panel_get_modes(ser->panel, connector);
}
static const struct drm_connector_helper_funcs
max96755f_bridge_connector_helper_funcs = {
.get_modes = max96755f_bridge_connector_get_modes,
};
static enum drm_connector_status
max96755f_bridge_connector_detect(struct drm_connector *connector, bool force)
{
struct max96755f_bridge *ser = to_max96755f_bridge(connector);
return drm_bridge_detect(&ser->bridge);
}
static const struct drm_connector_funcs max96755f_bridge_connector_funcs = {
.reset = drm_atomic_helper_connector_reset,
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = max96755f_bridge_connector_detect,
.destroy = drm_connector_cleanup,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static struct mipi_dsi_device *max96755f_attach_dsi(struct max96755f_bridge *max96755f,
struct device_node *dsi_node)
struct device_node *dsi_node)
{
const struct mipi_dsi_device_info info = { "max96755f", 0, NULL };
struct mipi_dsi_device *dsi;
@@ -74,20 +108,39 @@ static struct mipi_dsi_device *max96755f_attach_dsi(struct max96755f_bridge *max
}
static int max96755f_bridge_attach(struct drm_bridge *bridge,
enum drm_bridge_attach_flags flags)
enum drm_bridge_attach_flags flags)
{
struct max96755f_bridge *ser = to_max96755f_bridge(bridge);
struct drm_connector *connector = &ser->connector;
int ret;
ret = drm_of_find_panel_or_bridge(bridge->of_node, 1, -1, NULL,
ret = drm_of_find_panel_or_bridge(bridge->of_node, 1, -1, &ser->panel,
&ser->next_bridge);
if (ret)
return ret;
ret = drm_bridge_attach(bridge->encoder, ser->next_bridge,
bridge, flags);
if (ret)
if (ser->next_bridge) {
ret = drm_bridge_attach(bridge->encoder, ser->next_bridge,
bridge, DRM_BRIDGE_ATTACH_NO_CONNECTOR);
if (ret)
return ret;
}
connector->polled = DRM_CONNECTOR_POLL_CONNECT |
DRM_CONNECTOR_POLL_DISCONNECT;
drm_connector_helper_add(connector,
&max96755f_bridge_connector_helper_funcs);
ret = drm_connector_init(bridge->dev, connector,
&max96755f_bridge_connector_funcs,
ser->next_bridge ? ser->next_bridge->type : bridge->type);
if (ret) {
DRM_ERROR("Failed to initialize connector\n");
return ret;
}
drm_connector_attach_encoder(connector, bridge->encoder);
ser->dsi = max96755f_attach_dsi(ser, ser->dsi_node);
if (IS_ERR(ser->dsi))
@@ -142,8 +195,8 @@ static void max96755f_mipi_dsi_rx_config(struct max96755f_bridge *ser)
FIELD_PREP(DPI_HSYNC_WIDTH_H, (hsa >> 8)));
regmap_write(ser->regmap, 0x03a5, FIELD_PREP(DPI_VFP_L, vfp));
regmap_write(ser->regmap, 0x03a6,
FIELD_PREP(DPI_VBP_L, vbp) |
FIELD_PREP(DPI_VFP_H, (vfp >> 8)));
FIELD_PREP(DPI_VBP_L, vbp) |
FIELD_PREP(DPI_VFP_H, (vfp >> 8)));
regmap_write(ser->regmap, 0x03a7, FIELD_PREP(DPI_VBP_H, (vbp >> 4)));
regmap_write(ser->regmap, 0x03a8, FIELD_PREP(DPI_VACT_L, vact));
regmap_write(ser->regmap, 0x03a9, FIELD_PREP(DPI_VACT_H, (vact >> 8)));
@@ -180,6 +233,9 @@ static void max96755f_bridge_pre_enable(struct drm_bridge *bridge)
FIELD_PREP(DV_SPL, 1) |
FIELD_PREP(DV_EN, 1));
}
if (ser->panel)
drm_panel_prepare(ser->panel);
}
static void max96755f_bridge_enable(struct drm_bridge *bridge)
@@ -219,12 +275,18 @@ static void max96755f_bridge_enable(struct drm_bridge *bridge)
regmap_update_bits(ser->regmap, 0x10, RESET_ONESHOT,
FIELD_PREP(RESET_ONESHOT, 1));
mdelay(100);
if (ser->panel)
drm_panel_enable(ser->panel);
}
static void max96755f_bridge_disable(struct drm_bridge *bridge)
{
struct max96755f_bridge *ser = to_max96755f_bridge(bridge);
if (ser->panel)
drm_panel_disable(ser->panel);
regmap_update_bits(ser->regmap, 0x02, VID_TX_EN_X | VID_TX_EN_Y,
FIELD_PREP(VID_TX_EN_X, 0) |
FIELD_PREP(VID_TX_EN_Y, 0));
@@ -238,6 +300,10 @@ static void max96755f_bridge_disable(struct drm_bridge *bridge)
static void max96755f_bridge_post_disable(struct drm_bridge *bridge)
{
struct max96755f_bridge *ser = to_max96755f_bridge(bridge);
if (ser->panel)
drm_panel_unprepare(ser->panel);
}
static enum drm_connector_status
@@ -249,17 +315,17 @@ max96755f_bridge_detect(struct drm_bridge *bridge)
if (regmap_read(ser->regmap, 0x0013, &val))
return connector_status_disconnected;
if (FIELD_GET(LOCKED, val))
return connector_status_connected;
else
if (!FIELD_GET(LOCKED, val))
return connector_status_disconnected;
return connector_status_connected;
}
static void max96755f_bridge_mode_set(struct drm_bridge *bridge,
const struct drm_display_mode *mode,
const struct drm_display_mode *adj_mode)
const struct drm_display_mode *mode,
const struct drm_display_mode *adj_mode)
{
struct max96755f_bridge *ser = to_max96755f_bridge(bridge);
struct max96755f_bridge *ser = to_max96755f_bridge(bridge);
drm_mode_copy(&ser->mode, adj_mode);
}