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/* Copyright (c) 2019, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "edrm_encoder.h"
#include "edrm_crtc.h"
#include "sde_kms.h"
static void edrm_encoder_enable(struct drm_encoder *drm_enc)
{
pr_err("eDRM Encoder enable\n");
}
static void edrm_encoder_disable(struct drm_encoder *drm_enc)
{
pr_err("eDRM Encoder disable\n");
}
void edrm_encoder_destroy(struct drm_encoder *encoder)
{
struct edrm_encoder *edrm_enc = to_edrm_encoder(encoder);
drm_encoder_cleanup(encoder);
kfree(edrm_enc);
}
static const struct drm_encoder_helper_funcs edrm_encoder_helper_funcs = {
.disable = edrm_encoder_disable,
.enable = edrm_encoder_enable,
};
static const struct drm_encoder_funcs edrm_encoder_funcs = {
.destroy = edrm_encoder_destroy,
};
int edrm_encoder_wait_for_commit_done(struct drm_encoder *drm_enc)
{
struct drm_device *dev;
struct msm_drm_private *priv;
struct msm_edrm_kms *edrm_kms;
struct msm_edrm_display *display;
struct edrm_crtc *edrm_crtc;
struct sde_kms *master_kms;
struct msm_drm_private *master_priv;
struct sde_mdss_cfg *cfg;
u32 ctl_off;
u32 flush_register = 0;
int i;
dev = drm_enc->dev;
priv = dev->dev_private;
edrm_kms = to_edrm_kms(priv->kms);
master_priv = edrm_kms->master_dev->dev_private;
master_kms = to_sde_kms(master_priv->kms);
cfg = master_kms->catalog;
edrm_crtc = to_edrm_crtc(drm_enc->crtc);
display = &edrm_kms->display[edrm_crtc->display_id];
ctl_off = display->ctl_off;
/* poll edrm_crtc->sspp_flush_mask until cleared */
for (i = 0; i < 20; i++) {
flush_register = readl_relaxed(master_kms->mmio +
ctl_off + 0x18);
if ((flush_register & edrm_crtc->sspp_flush_mask) != 0)
usleep_range(1000, 2000);
else
break;
}
/* reset sspp_flush_mask */
edrm_crtc->sspp_flush_mask = 0;
return 0;
}
struct drm_encoder *edrm_encoder_init(struct drm_device *dev,
struct msm_edrm_display *display)
{
struct edrm_encoder *edrm_encoder;
struct drm_encoder *encoder;
int ret;
edrm_encoder = kzalloc(sizeof(*edrm_encoder), GFP_KERNEL);
if (!edrm_encoder)
return ERR_PTR(-ENOMEM);
encoder = &edrm_encoder->base;
ret = drm_encoder_init(dev, encoder,
&edrm_encoder_funcs,
display->encoder_type);
if (ret)
goto fail;
drm_encoder_helper_add(encoder, &edrm_encoder_helper_funcs);
edrm_encoder->intf_idx = display->intf_id;
return encoder;
fail:
kfree(edrm_encoder);
return ERR_PTR(ret);
}
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