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drm: rcar-du: Remove i2c slave encoder interface for hdmi encoder 

The hdmi output in rcar-du uses the i2c slave encoder interface to link
to the adv7511 encoder chip. The kms driver creates encoder and connector
entities that internally uses the drm_encoder_slave_funcs ops provided by
the slave encoder driver.

Change the driver such that it expects a bridge entity instead of a slave
encoder. The hdmi connector code isn't needed anymore as we expect the
adv7511 bridge driver to create/manage the connector.

Note that the kms driver still expects a connector node for hdmi to be
present in DT. This node has no connection to the connector created
by the bridge driver.

Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
This commit is contained in:
Archit Taneja 2016-07-18 08:44:04 +05:30
parent 7caff0fc42
commit 1d926114d8
6 changed files with 22 additions and 207 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/rcar-du/Makefile
View File

@ -7,8 +7,8 @@ rcar-du-drm-y := rcar_du_crtc.o \
rcar_du_plane.o \
rcar_du_vgacon.o
rcar-du-drm-$(CONFIG_DRM_RCAR_HDMI) += rcar_du_hdmicon.o \
rcar_du_hdmienc.o
rcar-du-drm-$(CONFIG_DRM_RCAR_HDMI) += rcar_du_hdmienc.o
rcar-du-drm-$(CONFIG_DRM_RCAR_LVDS) += rcar_du_lvdsenc.o
rcar-du-drm-$(CONFIG_DRM_RCAR_VSP) += rcar_du_vsp.o

3
drivers/gpu/drm/rcar-du/rcar_du_encoder.c
View File

@ -19,7 +19,6 @@
#include "rcar_du_drv.h"
#include "rcar_du_encoder.h"
#include "rcar_du_hdmicon.h"
#include "rcar_du_hdmienc.h"
#include "rcar_du_kms.h"
#include "rcar_du_lvdscon.h"
@ -174,7 +173,7 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu,
break;
case DRM_MODE_ENCODER_TMDS:
ret = rcar_du_hdmi_connector_init(rcdu, renc);
/* connector managed by the bridge driver */
break;
default:

7
drivers/gpu/drm/rcar-du/rcar_du_encoder.h
View File

@ -15,7 +15,6 @@
#define __RCAR_DU_ENCODER_H__
#include <drm/drm_crtc.h>
#include <drm/drm_encoder_slave.h>
struct rcar_du_device;
struct rcar_du_hdmienc;
@ -30,16 +29,16 @@ enum rcar_du_encoder_type {
};
struct rcar_du_encoder {
struct drm_encoder_slave slave;
struct drm_encoder base;
enum rcar_du_output output;
struct rcar_du_hdmienc *hdmi;
struct rcar_du_lvdsenc *lvds;
};
#define to_rcar_encoder(e) \
container_of(e, struct rcar_du_encoder, slave.base)
container_of(e, struct rcar_du_encoder, base)
#define rcar_encoder_to_drm_encoder(e) (&(e)->slave.base)
#define rcar_encoder_to_drm_encoder(e) (&(e)->base)
struct rcar_du_connector {
struct drm_connector connector;

116
drivers/gpu/drm/rcar-du/rcar_du_hdmicon.c
View File

@ -1,116 +0,0 @@
/*
* R-Car Display Unit HDMI Connector
*
* Copyright (C) 2014 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder_slave.h>
#include "rcar_du_drv.h"
#include "rcar_du_encoder.h"
#include "rcar_du_hdmicon.h"
#include "rcar_du_kms.h"
#define to_slave_funcs(e) (to_rcar_encoder(e)->slave.slave_funcs)
static int rcar_du_hdmi_connector_get_modes(struct drm_connector *connector)
{
struct rcar_du_connector *con = to_rcar_connector(connector);
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (sfuncs->get_modes == NULL)
return 0;
return sfuncs->get_modes(encoder, connector);
}
static int rcar_du_hdmi_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct rcar_du_connector *con = to_rcar_connector(connector);
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (sfuncs->mode_valid == NULL)
return MODE_OK;
return sfuncs->mode_valid(encoder, mode);
}
static const struct drm_connector_helper_funcs connector_helper_funcs = {
.get_modes = rcar_du_hdmi_connector_get_modes,
.mode_valid = rcar_du_hdmi_connector_mode_valid,
};
static enum drm_connector_status
rcar_du_hdmi_connector_detect(struct drm_connector *connector, bool force)
{
struct rcar_du_connector *con = to_rcar_connector(connector);
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (sfuncs->detect == NULL)
return connector_status_unknown;
return sfuncs->detect(encoder, connector);
}
static const struct drm_connector_funcs connector_funcs = {
.dpms = drm_atomic_helper_connector_dpms,
.reset = drm_atomic_helper_connector_reset,
.detect = rcar_du_hdmi_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = drm_connector_cleanup,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
int rcar_du_hdmi_connector_init(struct rcar_du_device *rcdu,
struct rcar_du_encoder *renc)
{
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
struct rcar_du_connector *rcon;
struct drm_connector *connector;
int ret;
rcon = devm_kzalloc(rcdu->dev, sizeof(*rcon), GFP_KERNEL);
if (rcon == NULL)
return -ENOMEM;
connector = &rcon->connector;
connector->display_info.width_mm = 0;
connector->display_info.height_mm = 0;
connector->interlace_allowed = true;
connector->polled = DRM_CONNECTOR_POLL_HPD;
ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
DRM_MODE_CONNECTOR_HDMIA);
if (ret < 0)
return ret;
drm_connector_helper_add(connector, &connector_helper_funcs);
connector->dpms = DRM_MODE_DPMS_OFF;
drm_object_property_set_value(&connector->base,
rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
ret = drm_mode_connector_attach_encoder(connector, encoder);
if (ret < 0)
return ret;
rcon->encoder = renc;
return 0;
}

31
drivers/gpu/drm/rcar-du/rcar_du_hdmicon.h
View File

@ -1,31 +0,0 @@
/*
* R-Car Display Unit HDMI Connector
*
* Copyright (C) 2014 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __RCAR_DU_HDMICON_H__
#define __RCAR_DU_HDMICON_H__
struct rcar_du_device;
struct rcar_du_encoder;
#if IS_ENABLED(CONFIG_DRM_RCAR_HDMI)
int rcar_du_hdmi_connector_init(struct rcar_du_device *rcdu,
struct rcar_du_encoder *renc);
#else
static inline int rcar_du_hdmi_connector_init(struct rcar_du_device *rcdu,
struct rcar_du_encoder *renc)
{
return -ENOSYS;
}
#endif
#endif /* __RCAR_DU_HDMICON_H__ */

68
drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c
View File

@ -16,7 +16,6 @@
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder_slave.h>
#include "rcar_du_drv.h"
#include "rcar_du_encoder.h"
@ -25,20 +24,14 @@
struct rcar_du_hdmienc {
struct rcar_du_encoder *renc;
struct device *dev;
bool enabled;
};
#define to_rcar_hdmienc(e) (to_rcar_encoder(e)->hdmi)
#define to_slave_funcs(e) (to_rcar_encoder(e)->slave.slave_funcs)
static void rcar_du_hdmienc_disable(struct drm_encoder *encoder)
{
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (sfuncs->dpms)
sfuncs->dpms(encoder, DRM_MODE_DPMS_OFF);
if (hdmienc->renc->lvds)
rcar_du_lvdsenc_enable(hdmienc->renc->lvds, encoder->crtc,
@ -50,15 +43,11 @@ static void rcar_du_hdmienc_disable(struct drm_encoder *encoder)
static void rcar_du_hdmienc_enable(struct drm_encoder *encoder)
{
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (hdmienc->renc->lvds)
rcar_du_lvdsenc_enable(hdmienc->renc->lvds, encoder->crtc,
true);
if (sfuncs->dpms)
sfuncs->dpms(encoder, DRM_MODE_DPMS_ON);
hdmienc->enabled = true;
}
@ -67,29 +56,21 @@ static int rcar_du_hdmienc_atomic_check(struct drm_encoder *encoder,
struct drm_connector_state *conn_state)
{
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode;
const struct drm_display_mode *mode = &crtc_state->mode;
if (hdmienc->renc->lvds)
rcar_du_lvdsenc_atomic_check(hdmienc->renc->lvds,
adjusted_mode);
if (sfuncs->mode_fixup == NULL)
return 0;
return sfuncs->mode_fixup(encoder, mode, adjusted_mode) ? 0 : -EINVAL;
return 0;
}
static void rcar_du_hdmienc_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (sfuncs->mode_set)
sfuncs->mode_set(encoder, mode, adjusted_mode);
rcar_du_crtc_route_output(encoder->crtc, hdmienc->renc->output);
}
@ -109,7 +90,6 @@ static void rcar_du_hdmienc_cleanup(struct drm_encoder *encoder)
rcar_du_hdmienc_disable(encoder);
drm_encoder_cleanup(encoder);
put_device(hdmienc->dev);
}
static const struct drm_encoder_funcs encoder_funcs = {
@ -120,8 +100,7 @@ int rcar_du_hdmienc_init(struct rcar_du_device *rcdu,
struct rcar_du_encoder *renc, struct device_node *np)
{
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
struct drm_i2c_encoder_driver *driver;
struct i2c_client *i2c_slave;
struct drm_bridge *bridge;
struct rcar_du_hdmienc *hdmienc;
int ret;
@ -129,44 +108,29 @@ int rcar_du_hdmienc_init(struct rcar_du_device *rcdu,
if (hdmienc == NULL)
return -ENOMEM;
/* Locate the slave I2C device and driver. */
i2c_slave = of_find_i2c_device_by_node(np);
if (!i2c_slave || !i2c_get_clientdata(i2c_slave)) {
dev_dbg(rcdu->dev,
"can't get I2C slave for %s, deferring probe\n",
of_node_full_name(np));
/* Locate drm bridge from the hdmi encoder DT node */
bridge = of_drm_find_bridge(np);
if (!bridge)
return -EPROBE_DEFER;
}
hdmienc->dev = &i2c_slave->dev;
if (hdmienc->dev->driver == NULL) {
dev_dbg(rcdu->dev,
"I2C slave %s not probed yet, deferring probe\n",
dev_name(hdmienc->dev));
ret = -EPROBE_DEFER;
goto error;
}
/* Initialize the slave encoder. */
driver = to_drm_i2c_encoder_driver(to_i2c_driver(hdmienc->dev->driver));
ret = driver->encoder_init(i2c_slave, rcdu->ddev, &renc->slave);
if (ret < 0)
goto error;
ret = drm_encoder_init(rcdu->ddev, encoder, &encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);
if (ret < 0)
goto error;
return ret;
drm_encoder_helper_add(encoder, &encoder_helper_funcs);
renc->hdmi = hdmienc;
hdmienc->renc = renc;
return 0;
/* Link drm_bridge to encoder */
bridge->encoder = encoder;
error:
put_device(hdmienc->dev);
return ret;
ret = drm_bridge_attach(rcdu->ddev, bridge);
if (ret) {
drm_encoder_cleanup(encoder);
return ret;
}
return 0;
}