141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
/* Hisilicon Hibmc SoC drm driver
|
|
*
|
|
* Based on the bochs drm driver.
|
|
*
|
|
* Copyright (c) 2016 Huawei Limited.
|
|
*
|
|
* Author:
|
|
* Rongrong Zou <zourongrong@huawei.com>
|
|
* Rongrong Zou <zourongrong@gmail.com>
|
|
* Jianhua Li <lijianhua@huawei.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/drm_atomic_helper.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
|
|
#include "hibmc_drm_drv.h"
|
|
#include "hibmc_drm_regs.h"
|
|
|
|
static int hibmc_connector_get_modes(struct drm_connector *connector)
|
|
{
|
|
return drm_add_modes_noedid(connector, 800, 600);
|
|
}
|
|
|
|
static int hibmc_connector_mode_valid(struct drm_connector *connector,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
return MODE_OK;
|
|
}
|
|
|
|
static struct drm_encoder *
|
|
hibmc_connector_best_encoder(struct drm_connector *connector)
|
|
{
|
|
return drm_encoder_find(connector->dev, connector->encoder_ids[0]);
|
|
}
|
|
|
|
static const struct drm_connector_helper_funcs
|
|
hibmc_connector_helper_funcs = {
|
|
.get_modes = hibmc_connector_get_modes,
|
|
.mode_valid = hibmc_connector_mode_valid,
|
|
.best_encoder = hibmc_connector_best_encoder,
|
|
};
|
|
|
|
static const struct drm_connector_funcs hibmc_connector_funcs = {
|
|
.dpms = drm_atomic_helper_connector_dpms,
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.destroy = drm_connector_cleanup,
|
|
.reset = drm_atomic_helper_connector_reset,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
};
|
|
|
|
static struct drm_connector *
|
|
hibmc_connector_init(struct hibmc_drm_private *priv)
|
|
{
|
|
struct drm_device *dev = priv->dev;
|
|
struct drm_connector *connector;
|
|
int ret;
|
|
|
|
connector = devm_kzalloc(dev->dev, sizeof(*connector), GFP_KERNEL);
|
|
if (!connector) {
|
|
DRM_ERROR("failed to alloc memory when init connector\n");
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
ret = drm_connector_init(dev, connector,
|
|
&hibmc_connector_funcs,
|
|
DRM_MODE_CONNECTOR_VGA);
|
|
if (ret) {
|
|
DRM_ERROR("failed to init connector: %d\n", ret);
|
|
return ERR_PTR(ret);
|
|
}
|
|
drm_connector_helper_add(connector,
|
|
&hibmc_connector_helper_funcs);
|
|
|
|
return connector;
|
|
}
|
|
|
|
static void hibmc_encoder_mode_set(struct drm_encoder *encoder,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adj_mode)
|
|
{
|
|
u32 reg;
|
|
struct drm_device *dev = encoder->dev;
|
|
struct hibmc_drm_private *priv = dev->dev_private;
|
|
|
|
reg = readl(priv->mmio + HIBMC_DISPLAY_CONTROL_HISILE);
|
|
reg |= HIBMC_DISPLAY_CONTROL_FPVDDEN(1);
|
|
reg |= HIBMC_DISPLAY_CONTROL_PANELDATE(1);
|
|
reg |= HIBMC_DISPLAY_CONTROL_FPEN(1);
|
|
reg |= HIBMC_DISPLAY_CONTROL_VBIASEN(1);
|
|
writel(reg, priv->mmio + HIBMC_DISPLAY_CONTROL_HISILE);
|
|
}
|
|
|
|
static const struct drm_encoder_helper_funcs hibmc_encoder_helper_funcs = {
|
|
.mode_set = hibmc_encoder_mode_set,
|
|
};
|
|
|
|
static const struct drm_encoder_funcs hibmc_encoder_funcs = {
|
|
.destroy = drm_encoder_cleanup,
|
|
};
|
|
|
|
int hibmc_vdac_init(struct hibmc_drm_private *priv)
|
|
{
|
|
struct drm_device *dev = priv->dev;
|
|
struct drm_encoder *encoder;
|
|
struct drm_connector *connector;
|
|
int ret;
|
|
|
|
connector = hibmc_connector_init(priv);
|
|
if (IS_ERR(connector)) {
|
|
DRM_ERROR("failed to create connector: %ld\n",
|
|
PTR_ERR(connector));
|
|
return PTR_ERR(connector);
|
|
}
|
|
|
|
encoder = devm_kzalloc(dev->dev, sizeof(*encoder), GFP_KERNEL);
|
|
if (!encoder) {
|
|
DRM_ERROR("failed to alloc memory when init encoder\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
encoder->possible_crtcs = 0x1;
|
|
ret = drm_encoder_init(dev, encoder, &hibmc_encoder_funcs,
|
|
DRM_MODE_ENCODER_DAC, NULL);
|
|
if (ret) {
|
|
DRM_ERROR("failed to init encoder: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
drm_encoder_helper_add(encoder, &hibmc_encoder_helper_funcs);
|
|
drm_mode_connector_attach_encoder(connector, encoder);
|
|
|
|
return 0;
|
|
}
|