evie/android_kernel_oneplus_msm8998
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drm/msm: add HPD notification and acknowledge support

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In HPD case the HDMI driver communicate with external display
module by specific notification and acknowledge interfaces.
Add this support to enable the communication.

CRs-Fixed: 2010135
Change-Id: I24ac1e0f0cb1e3946e2a53e4bf72bafbd84e4395
Signed-off-by: Ray Zhang <rayz@codeaurora.org>
This commit is contained in:
Ray Zhang 2017-02-17 17:46:34 +08:00
parent 1c4ce7aa2c
commit 9b0940a54c
3 changed files with 90 additions and 0 deletions
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38
drivers/gpu/drm/msm/hdmi-staging/sde_hdmi.c
View file

@ -25,6 +25,7 @@
#include <linux/of_platform.h>
#include "sde_kms.h"
#include "sde_connector.h"
#include "msm_drv.h"
#include "sde_hdmi.h"
@ -404,6 +405,8 @@ static void _sde_hdmi_hotplug_work(struct work_struct *work)
connector = sde_hdmi->ctrl.ctrl->connector;
drm_helper_hpd_irq_event(connector->dev);
sde_hdmi_notify_clients(connector, connector->status);
}
static void _sde_hdmi_connector_irq(struct sde_hdmi *sde_hdmi)
@ -569,6 +572,41 @@ static int _sde_hdmi_ext_disp_init(struct sde_hdmi *display)
return rc;
}
void sde_hdmi_notify_clients(struct drm_connector *connector,
enum drm_connector_status status)
{
struct sde_connector *c_conn = to_sde_connector(connector);
struct sde_hdmi *display = (struct sde_hdmi *)c_conn->display;
int state = (status == connector_status_connected) ?
EXT_DISPLAY_CABLE_CONNECT : EXT_DISPLAY_CABLE_DISCONNECT;
if (display && display->ext_audio_data.intf_ops.hpd) {
struct hdmi *hdmi = display->ctrl.ctrl;
u32 flags = MSM_EXT_DISP_HPD_VIDEO;
if (hdmi->hdmi_mode)
flags |= MSM_EXT_DISP_HPD_AUDIO;
display->ext_audio_data.intf_ops.hpd(display->ext_pdev,
display->ext_audio_data.type, state, flags);
}
}
void sde_hdmi_ack_state(struct drm_connector *connector,
enum drm_connector_status status)
{
struct sde_connector *c_conn = to_sde_connector(connector);
struct sde_hdmi *display = (struct sde_hdmi *)c_conn->display;
if (display) {
struct hdmi *hdmi = display->ctrl.ctrl;
if (hdmi->hdmi_mode && display->ext_audio_data.intf_ops.notify)
display->ext_audio_data.intf_ops.notify(
display->ext_pdev, status);
}
}
void sde_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
{
uint32_t ctrl = 0;

21
drivers/gpu/drm/msm/hdmi-staging/sde_hdmi.h
View file

@ -271,6 +271,27 @@ void sde_hdmi_audio_off(struct hdmi *hdmi);
* Return: error code.
*/
int sde_hdmi_config_avmute(struct hdmi *hdmi, bool set);
/**
* sde_hdmi_notify_clients() - notify hdmi clients of the connection status.
* @connector: Handle to the drm_connector.
* @status: connection status.
*
* Return: void.
*/
void sde_hdmi_notify_clients(struct drm_connector *connector,
enum drm_connector_status status);
/**
* sde_hdmi_ack_state() - acknowledge the connection status.
* @connector: Handle to the drm_connector.
* @status: connection status.
*
* Return: void.
*/
void sde_hdmi_ack_state(struct drm_connector *connector,
enum drm_connector_status status);
#else /*#ifdef CONFIG_DRM_SDE_HDMI*/
static inline u32 sde_hdmi_get_num_of_displays(void)

31
drivers/gpu/drm/msm/hdmi-staging/sde_hdmi_bridge.c
View file

@ -18,6 +18,7 @@
#include "drm_edid.h"
#include "sde_kms.h"
#include "sde_connector.h"
#include "sde_hdmi.h"
#include "hdmi.h"
@ -120,14 +121,42 @@ static void _sde_hdmi_bridge_pre_enable(struct drm_bridge *bridge)
if (hdmi->hdcp_ctrl && hdmi->is_hdcp_supported)
hdmi_hdcp_ctrl_on(hdmi->hdcp_ctrl);
sde_hdmi_ack_state(hdmi->connector, EXT_DISPLAY_CABLE_CONNECT);
}
static void sde_hdmi_force_update_audio(struct drm_connector *connector,
enum drm_connector_status status)
{
struct sde_connector *c_conn = to_sde_connector(connector);
struct sde_hdmi *display = (struct sde_hdmi *)c_conn->display;
if (display && display->non_pluggable) {
display->ext_audio_data.intf_ops.hpd(display->ext_pdev,
display->ext_audio_data.type,
status,
MSM_EXT_DISP_HPD_AUDIO);
}
}
static void _sde_hdmi_bridge_enable(struct drm_bridge *bridge)
{
struct sde_hdmi_bridge *sde_hdmi_bridge = to_hdmi_bridge(bridge);
struct hdmi *hdmi = sde_hdmi_bridge->hdmi;
/* force update audio ops when there's no HPD event */
sde_hdmi_force_update_audio(hdmi->connector,
EXT_DISPLAY_CABLE_CONNECT);
}
static void _sde_hdmi_bridge_disable(struct drm_bridge *bridge)
{
struct sde_hdmi_bridge *sde_hdmi_bridge = to_hdmi_bridge(bridge);
struct hdmi *hdmi = sde_hdmi_bridge->hdmi;
/* force update audio ops when there's no HPD event */
sde_hdmi_force_update_audio(hdmi->connector,
EXT_DISPLAY_CABLE_DISCONNECT);
}
static void _sde_hdmi_bridge_post_disable(struct drm_bridge *bridge)
@ -151,6 +180,8 @@ static void _sde_hdmi_bridge_post_disable(struct drm_bridge *bridge)
_sde_hdmi_bridge_power_off(bridge);
hdmi->power_on = false;
}
sde_hdmi_ack_state(hdmi->connector, EXT_DISPLAY_CABLE_DISCONNECT);
}
static void _sde_hdmi_bridge_set_avi_infoframe(struct hdmi *hdmi,