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drm/rockchip: dw-dp: Add extcon support

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Signed-off-by: Wyon bi <bivvy.bi@rock-chips.com>
Change-Id: I7310fb33f46ed555bdf4c4f5601356696e68f34d
This commit is contained in:
Wyon bi
2022-01-18 17:17:02 +08:00
parent d14994e799
commit f444da677c
1 changed files with 33 additions and 0 deletions
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33
drivers/gpu/drm/rockchip/dw-dp.c
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@@ -21,6 +21,7 @@
#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/extcon-provider.h>
#include <linux/iopoll.h>
#include <linux/irq.h>
#include <linux/of_device.h>
@@ -251,6 +252,7 @@ struct dw_dp {
struct gpio_desc *hpd_gpio;
struct dw_dp_hotplug hotplug;
struct mutex irq_lock;
struct extcon_dev *extcon;
struct drm_bridge bridge;
struct drm_connector connector;
@@ -319,6 +321,11 @@ enum {
DPTX_PHY_PATTERN_CP2520_2,
};
static const unsigned int dw_dp_cable[] = {
EXTCON_DISP_DP,
EXTCON_NONE,
};
struct dw_dp_output_format {
u32 bus_format;
u32 color_format;
@@ -457,10 +464,21 @@ dw_dp_connector_detect(struct drm_connector *connector, bool force)
return drm_bridge_detect(&dp->bridge);
}
static void dw_dp_connector_force(struct drm_connector *connector)
{
struct dw_dp *dp = connector_to_dp(connector);
if (connector->status == connector_status_connected)
extcon_set_state_sync(dp->extcon, EXTCON_DISP_DP, true);
else
extcon_set_state_sync(dp->extcon, EXTCON_DISP_DP, false);
}
static const struct drm_connector_funcs dw_dp_connector_funcs = {
.detect = dw_dp_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = drm_connector_cleanup,
.force = dw_dp_connector_force,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
@@ -1877,6 +1895,11 @@ static enum drm_connector_status dw_dp_bridge_detect(struct drm_bridge *bridge)
else
status = connector_status_disconnected;
if (status == connector_status_connected)
extcon_set_state_sync(dp->extcon, EXTCON_DISP_DP, true);
else
extcon_set_state_sync(dp->extcon, EXTCON_DISP_DP, false);
return status;
}
@@ -2420,6 +2443,16 @@ static int dw_dp_probe(struct platform_device *pdev)
return ret;
}
dp->extcon = devm_extcon_dev_allocate(dev, dw_dp_cable);
if (IS_ERR(dp->extcon))
return dev_err_probe(dev, PTR_ERR(dp->extcon),
"failed to allocate extcon device\n");
ret = devm_extcon_dev_register(dev, dp->extcon);
if (ret)
return dev_err_probe(dev, ret,
"failed to register extcon device\n");
ret = dw_dp_register_audio_driver(dp);
if (ret)
return ret;