linux/drivers/gpu/drm/exynos/exynos_drm_connector.c
YoungJun Cho bca34c9a40 drm/exynos: Remove tracking log functions
This patch removes tracking log functions which were used to debug
in the early development stage and are not so important as were.
So remove them for code clean up.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-06-28 21:13:55 +09:00

333 lines
9.2 KiB
C

/*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* Authors:
* Inki Dae <inki.dae@samsung.com>
* Joonyoung Shim <jy0922.shim@samsung.com>
* Seung-Woo Kim <sw0312.kim@samsung.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_crtc_helper.h>
#include <drm/exynos_drm.h>
#include "exynos_drm_drv.h"
#include "exynos_drm_encoder.h"
#define to_exynos_connector(x) container_of(x, struct exynos_drm_connector,\
drm_connector)
struct exynos_drm_connector {
struct drm_connector drm_connector;
uint32_t encoder_id;
struct exynos_drm_manager *manager;
uint32_t dpms;
};
/* convert exynos_video_timings to drm_display_mode */
static inline void
convert_to_display_mode(struct drm_display_mode *mode,
struct exynos_drm_panel_info *panel)
{
struct fb_videomode *timing = &panel->timing;
mode->clock = timing->pixclock / 1000;
mode->vrefresh = timing->refresh;
mode->hdisplay = timing->xres;
mode->hsync_start = mode->hdisplay + timing->right_margin;
mode->hsync_end = mode->hsync_start + timing->hsync_len;
mode->htotal = mode->hsync_end + timing->left_margin;
mode->vdisplay = timing->yres;
mode->vsync_start = mode->vdisplay + timing->lower_margin;
mode->vsync_end = mode->vsync_start + timing->vsync_len;
mode->vtotal = mode->vsync_end + timing->upper_margin;
mode->width_mm = panel->width_mm;
mode->height_mm = panel->height_mm;
if (timing->vmode & FB_VMODE_INTERLACED)
mode->flags |= DRM_MODE_FLAG_INTERLACE;
if (timing->vmode & FB_VMODE_DOUBLE)
mode->flags |= DRM_MODE_FLAG_DBLSCAN;
}
static int exynos_drm_connector_get_modes(struct drm_connector *connector)
{
struct exynos_drm_connector *exynos_connector =
to_exynos_connector(connector);
struct exynos_drm_manager *manager = exynos_connector->manager;
struct exynos_drm_display_ops *display_ops = manager->display_ops;
struct edid *edid = NULL;
unsigned int count = 0;
int ret;
if (!display_ops) {
DRM_DEBUG_KMS("display_ops is null.\n");
return 0;
}
/*
* if get_edid() exists then get_edid() callback of hdmi side
* is called to get edid data through i2c interface else
* get timing from the FIMD driver(display controller).
*
* P.S. in case of lcd panel, count is always 1 if success
* because lcd panel has only one mode.
*/
if (display_ops->get_edid) {
edid = display_ops->get_edid(manager->dev, connector);
if (IS_ERR_OR_NULL(edid)) {
ret = PTR_ERR(edid);
edid = NULL;
DRM_ERROR("Panel operation get_edid failed %d\n", ret);
goto out;
}
count = drm_add_edid_modes(connector, edid);
if (!count) {
DRM_ERROR("Add edid modes failed %d\n", count);
goto out;
}
drm_mode_connector_update_edid_property(connector, edid);
} else {
struct exynos_drm_panel_info *panel;
struct drm_display_mode *mode = drm_mode_create(connector->dev);
if (!mode) {
DRM_ERROR("failed to create a new display mode.\n");
return 0;
}
if (display_ops->get_panel)
panel = display_ops->get_panel(manager->dev);
else {
drm_mode_destroy(connector->dev, mode);
return 0;
}
convert_to_display_mode(mode, panel);
connector->display_info.width_mm = mode->width_mm;
connector->display_info.height_mm = mode->height_mm;
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
count = 1;
}
out:
kfree(edid);
return count;
}
static int exynos_drm_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct exynos_drm_connector *exynos_connector =
to_exynos_connector(connector);
struct exynos_drm_manager *manager = exynos_connector->manager;
struct exynos_drm_display_ops *display_ops = manager->display_ops;
int ret = MODE_BAD;
DRM_DEBUG_KMS("%s\n", __FILE__);
if (display_ops && display_ops->check_mode)
if (!display_ops->check_mode(manager->dev, mode))
ret = MODE_OK;
return ret;
}
struct drm_encoder *exynos_drm_best_encoder(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct exynos_drm_connector *exynos_connector =
to_exynos_connector(connector);
struct drm_mode_object *obj;
struct drm_encoder *encoder;
obj = drm_mode_object_find(dev, exynos_connector->encoder_id,
DRM_MODE_OBJECT_ENCODER);
if (!obj) {
DRM_DEBUG_KMS("Unknown ENCODER ID %d\n",
exynos_connector->encoder_id);
return NULL;
}
encoder = obj_to_encoder(obj);
return encoder;
}
static struct drm_connector_helper_funcs exynos_connector_helper_funcs = {
.get_modes = exynos_drm_connector_get_modes,
.mode_valid = exynos_drm_connector_mode_valid,
.best_encoder = exynos_drm_best_encoder,
};
void exynos_drm_display_power(struct drm_connector *connector, int mode)
{
struct drm_encoder *encoder = exynos_drm_best_encoder(connector);
struct exynos_drm_connector *exynos_connector;
struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
struct exynos_drm_display_ops *display_ops = manager->display_ops;
exynos_connector = to_exynos_connector(connector);
if (exynos_connector->dpms == mode) {
DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
return;
}
if (display_ops && display_ops->power_on)
display_ops->power_on(manager->dev, mode);
exynos_connector->dpms = mode;
}
static void exynos_drm_connector_dpms(struct drm_connector *connector,
int mode)
{
/*
* in case that drm_crtc_helper_set_mode() is called,
* encoder/crtc->funcs->dpms() will be just returned
* because they already were DRM_MODE_DPMS_ON so only
* exynos_drm_display_power() will be called.
*/
drm_helper_connector_dpms(connector, mode);
exynos_drm_display_power(connector, mode);
}
static int exynos_drm_connector_fill_modes(struct drm_connector *connector,
unsigned int max_width, unsigned int max_height)
{
struct exynos_drm_connector *exynos_connector =
to_exynos_connector(connector);
struct exynos_drm_manager *manager = exynos_connector->manager;
struct exynos_drm_manager_ops *ops = manager->ops;
unsigned int width, height;
width = max_width;
height = max_height;
/*
* if specific driver want to find desired_mode using maxmum
* resolution then get max width and height from that driver.
*/
if (ops && ops->get_max_resol)
ops->get_max_resol(manager->dev, &width, &height);
return drm_helper_probe_single_connector_modes(connector, width,
height);
}
/* get detection status of display device. */
static enum drm_connector_status
exynos_drm_connector_detect(struct drm_connector *connector, bool force)
{
struct exynos_drm_connector *exynos_connector =
to_exynos_connector(connector);
struct exynos_drm_manager *manager = exynos_connector->manager;
struct exynos_drm_display_ops *display_ops =
manager->display_ops;
enum drm_connector_status status = connector_status_disconnected;
if (display_ops && display_ops->is_connected) {
if (display_ops->is_connected(manager->dev))
status = connector_status_connected;
else
status = connector_status_disconnected;
}
return status;
}
static void exynos_drm_connector_destroy(struct drm_connector *connector)
{
struct exynos_drm_connector *exynos_connector =
to_exynos_connector(connector);
drm_sysfs_connector_remove(connector);
drm_connector_cleanup(connector);
kfree(exynos_connector);
}
static struct drm_connector_funcs exynos_connector_funcs = {
.dpms = exynos_drm_connector_dpms,
.fill_modes = exynos_drm_connector_fill_modes,
.detect = exynos_drm_connector_detect,
.destroy = exynos_drm_connector_destroy,
};
struct drm_connector *exynos_drm_connector_create(struct drm_device *dev,
struct drm_encoder *encoder)
{
struct exynos_drm_connector *exynos_connector;
struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
struct drm_connector *connector;
int type;
int err;
exynos_connector = kzalloc(sizeof(*exynos_connector), GFP_KERNEL);
if (!exynos_connector) {
DRM_ERROR("failed to allocate connector\n");
return NULL;
}
connector = &exynos_connector->drm_connector;
switch (manager->display_ops->type) {
case EXYNOS_DISPLAY_TYPE_HDMI:
type = DRM_MODE_CONNECTOR_HDMIA;
connector->interlace_allowed = true;
connector->polled = DRM_CONNECTOR_POLL_HPD;
break;
case EXYNOS_DISPLAY_TYPE_VIDI:
type = DRM_MODE_CONNECTOR_VIRTUAL;
connector->polled = DRM_CONNECTOR_POLL_HPD;
break;
default:
type = DRM_MODE_CONNECTOR_Unknown;
break;
}
drm_connector_init(dev, connector, &exynos_connector_funcs, type);
drm_connector_helper_add(connector, &exynos_connector_helper_funcs);
err = drm_sysfs_connector_add(connector);
if (err)
goto err_connector;
exynos_connector->encoder_id = encoder->base.id;
exynos_connector->manager = manager;
exynos_connector->dpms = DRM_MODE_DPMS_OFF;
connector->dpms = DRM_MODE_DPMS_OFF;
connector->encoder = encoder;
err = drm_mode_connector_attach_encoder(connector, encoder);
if (err) {
DRM_ERROR("failed to attach a connector to a encoder\n");
goto err_sysfs;
}
DRM_DEBUG_KMS("connector has been created\n");
return connector;
err_sysfs:
drm_sysfs_connector_remove(connector);
err_connector:
drm_connector_cleanup(connector);
kfree(exynos_connector);
return NULL;
}