linux/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
Laurent Pinchart e811f5ae19 drm: Make the .mode_fixup() operations mode argument a const pointer
The passed mode must not be modified by the operation, make it const.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-07-19 21:52:38 -04:00

387 lines
9.1 KiB
C

/*
* Copyright (C) 2011 Samsung Electronics Co.Ltd
* Authors:
* Inki Dae <inki.dae@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 "drmP.h"
#include <linux/kernel.h>
#include <linux/wait.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <drm/exynos_drm.h>
#include "exynos_drm_drv.h"
#include "exynos_drm_hdmi.h"
#define to_context(dev) platform_get_drvdata(to_platform_device(dev))
#define to_subdrv(dev) to_context(dev)
#define get_ctx_from_subdrv(subdrv) container_of(subdrv,\
struct drm_hdmi_context, subdrv);
/* these callback points shoud be set by specific drivers. */
static struct exynos_hdmi_ops *hdmi_ops;
static struct exynos_mixer_ops *mixer_ops;
struct drm_hdmi_context {
struct exynos_drm_subdrv subdrv;
struct exynos_drm_hdmi_context *hdmi_ctx;
struct exynos_drm_hdmi_context *mixer_ctx;
bool enabled[MIXER_WIN_NR];
};
void exynos_hdmi_ops_register(struct exynos_hdmi_ops *ops)
{
DRM_DEBUG_KMS("%s\n", __FILE__);
if (ops)
hdmi_ops = ops;
}
void exynos_mixer_ops_register(struct exynos_mixer_ops *ops)
{
DRM_DEBUG_KMS("%s\n", __FILE__);
if (ops)
mixer_ops = ops;
}
static bool drm_hdmi_is_connected(struct device *dev)
{
struct drm_hdmi_context *ctx = to_context(dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (hdmi_ops && hdmi_ops->is_connected)
return hdmi_ops->is_connected(ctx->hdmi_ctx->ctx);
return false;
}
static int drm_hdmi_get_edid(struct device *dev,
struct drm_connector *connector, u8 *edid, int len)
{
struct drm_hdmi_context *ctx = to_context(dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (hdmi_ops && hdmi_ops->get_edid)
return hdmi_ops->get_edid(ctx->hdmi_ctx->ctx, connector, edid,
len);
return 0;
}
static int drm_hdmi_check_timing(struct device *dev, void *timing)
{
struct drm_hdmi_context *ctx = to_context(dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (hdmi_ops && hdmi_ops->check_timing)
return hdmi_ops->check_timing(ctx->hdmi_ctx->ctx, timing);
return 0;
}
static int drm_hdmi_power_on(struct device *dev, int mode)
{
struct drm_hdmi_context *ctx = to_context(dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (hdmi_ops && hdmi_ops->power_on)
return hdmi_ops->power_on(ctx->hdmi_ctx->ctx, mode);
return 0;
}
static struct exynos_drm_display_ops drm_hdmi_display_ops = {
.type = EXYNOS_DISPLAY_TYPE_HDMI,
.is_connected = drm_hdmi_is_connected,
.get_edid = drm_hdmi_get_edid,
.check_timing = drm_hdmi_check_timing,
.power_on = drm_hdmi_power_on,
};
static int drm_hdmi_enable_vblank(struct device *subdrv_dev)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
struct exynos_drm_manager *manager = subdrv->manager;
DRM_DEBUG_KMS("%s\n", __FILE__);
if (mixer_ops && mixer_ops->enable_vblank)
return mixer_ops->enable_vblank(ctx->mixer_ctx->ctx,
manager->pipe);
return 0;
}
static void drm_hdmi_disable_vblank(struct device *subdrv_dev)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (mixer_ops && mixer_ops->disable_vblank)
return mixer_ops->disable_vblank(ctx->mixer_ctx->ctx);
}
static void drm_hdmi_mode_fixup(struct device *subdrv_dev,
struct drm_connector *connector,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (hdmi_ops && hdmi_ops->mode_fixup)
hdmi_ops->mode_fixup(ctx->hdmi_ctx->ctx, connector, mode,
adjusted_mode);
}
static void drm_hdmi_mode_set(struct device *subdrv_dev, void *mode)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (hdmi_ops && hdmi_ops->mode_set)
hdmi_ops->mode_set(ctx->hdmi_ctx->ctx, mode);
}
static void drm_hdmi_get_max_resol(struct device *subdrv_dev,
unsigned int *width, unsigned int *height)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (hdmi_ops && hdmi_ops->get_max_resol)
hdmi_ops->get_max_resol(ctx->hdmi_ctx->ctx, width, height);
}
static void drm_hdmi_commit(struct device *subdrv_dev)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (hdmi_ops && hdmi_ops->commit)
hdmi_ops->commit(ctx->hdmi_ctx->ctx);
}
static void drm_hdmi_dpms(struct device *subdrv_dev, int mode)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (mixer_ops && mixer_ops->dpms)
mixer_ops->dpms(ctx->mixer_ctx->ctx, mode);
if (hdmi_ops && hdmi_ops->dpms)
hdmi_ops->dpms(ctx->hdmi_ctx->ctx, mode);
}
static void drm_hdmi_apply(struct device *subdrv_dev)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
int i;
DRM_DEBUG_KMS("%s\n", __FILE__);
for (i = 0; i < MIXER_WIN_NR; i++) {
if (!ctx->enabled[i])
continue;
if (mixer_ops && mixer_ops->win_commit)
mixer_ops->win_commit(ctx->mixer_ctx->ctx, i);
}
if (hdmi_ops && hdmi_ops->commit)
hdmi_ops->commit(ctx->hdmi_ctx->ctx);
}
static struct exynos_drm_manager_ops drm_hdmi_manager_ops = {
.dpms = drm_hdmi_dpms,
.apply = drm_hdmi_apply,
.enable_vblank = drm_hdmi_enable_vblank,
.disable_vblank = drm_hdmi_disable_vblank,
.mode_fixup = drm_hdmi_mode_fixup,
.mode_set = drm_hdmi_mode_set,
.get_max_resol = drm_hdmi_get_max_resol,
.commit = drm_hdmi_commit,
};
static void drm_mixer_mode_set(struct device *subdrv_dev,
struct exynos_drm_overlay *overlay)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
DRM_DEBUG_KMS("%s\n", __FILE__);
if (mixer_ops && mixer_ops->win_mode_set)
mixer_ops->win_mode_set(ctx->mixer_ctx->ctx, overlay);
}
static void drm_mixer_commit(struct device *subdrv_dev, int zpos)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
int win = (zpos == DEFAULT_ZPOS) ? MIXER_DEFAULT_WIN : zpos;
DRM_DEBUG_KMS("%s\n", __FILE__);
if (win < 0 || win > MIXER_WIN_NR) {
DRM_ERROR("mixer window[%d] is wrong\n", win);
return;
}
if (mixer_ops && mixer_ops->win_commit)
mixer_ops->win_commit(ctx->mixer_ctx->ctx, win);
ctx->enabled[win] = true;
}
static void drm_mixer_disable(struct device *subdrv_dev, int zpos)
{
struct drm_hdmi_context *ctx = to_context(subdrv_dev);
int win = (zpos == DEFAULT_ZPOS) ? MIXER_DEFAULT_WIN : zpos;
DRM_DEBUG_KMS("%s\n", __FILE__);
if (win < 0 || win > MIXER_WIN_NR) {
DRM_ERROR("mixer window[%d] is wrong\n", win);
return;
}
if (mixer_ops && mixer_ops->win_disable)
mixer_ops->win_disable(ctx->mixer_ctx->ctx, win);
ctx->enabled[win] = false;
}
static struct exynos_drm_overlay_ops drm_hdmi_overlay_ops = {
.mode_set = drm_mixer_mode_set,
.commit = drm_mixer_commit,
.disable = drm_mixer_disable,
};
static struct exynos_drm_manager hdmi_manager = {
.pipe = -1,
.ops = &drm_hdmi_manager_ops,
.overlay_ops = &drm_hdmi_overlay_ops,
.display_ops = &drm_hdmi_display_ops,
};
static int hdmi_subdrv_probe(struct drm_device *drm_dev,
struct device *dev)
{
struct exynos_drm_subdrv *subdrv = to_subdrv(dev);
struct drm_hdmi_context *ctx;
struct platform_device *pdev = to_platform_device(dev);
struct exynos_drm_common_hdmi_pd *pd;
DRM_DEBUG_KMS("%s\n", __FILE__);
pd = pdev->dev.platform_data;
if (!pd) {
DRM_DEBUG_KMS("platform data is null.\n");
return -EFAULT;
}
if (!pd->hdmi_dev) {
DRM_DEBUG_KMS("hdmi device is null.\n");
return -EFAULT;
}
if (!pd->mixer_dev) {
DRM_DEBUG_KMS("mixer device is null.\n");
return -EFAULT;
}
ctx = get_ctx_from_subdrv(subdrv);
ctx->hdmi_ctx = (struct exynos_drm_hdmi_context *)
to_context(pd->hdmi_dev);
if (!ctx->hdmi_ctx) {
DRM_DEBUG_KMS("hdmi context is null.\n");
return -EFAULT;
}
ctx->hdmi_ctx->drm_dev = drm_dev;
ctx->mixer_ctx = (struct exynos_drm_hdmi_context *)
to_context(pd->mixer_dev);
if (!ctx->mixer_ctx) {
DRM_DEBUG_KMS("mixer context is null.\n");
return -EFAULT;
}
ctx->mixer_ctx->drm_dev = drm_dev;
return 0;
}
static int __devinit exynos_drm_hdmi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct exynos_drm_subdrv *subdrv;
struct drm_hdmi_context *ctx;
DRM_DEBUG_KMS("%s\n", __FILE__);
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) {
DRM_LOG_KMS("failed to alloc common hdmi context.\n");
return -ENOMEM;
}
subdrv = &ctx->subdrv;
subdrv->dev = dev;
subdrv->manager = &hdmi_manager;
subdrv->probe = hdmi_subdrv_probe;
platform_set_drvdata(pdev, subdrv);
exynos_drm_subdrv_register(subdrv);
return 0;
}
static int __devexit exynos_drm_hdmi_remove(struct platform_device *pdev)
{
struct drm_hdmi_context *ctx = platform_get_drvdata(pdev);
DRM_DEBUG_KMS("%s\n", __FILE__);
exynos_drm_subdrv_unregister(&ctx->subdrv);
kfree(ctx);
return 0;
}
struct platform_driver exynos_drm_common_hdmi_driver = {
.probe = exynos_drm_hdmi_probe,
.remove = __devexit_p(exynos_drm_hdmi_remove),
.driver = {
.name = "exynos-drm-hdmi",
.owner = THIS_MODULE,
},
};