#include <linux/clk.h>
#include <linux/io.h>
#include <linux/interrupt.h>
-#include <linux/delay.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/gpio.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
+#include <drm/drm_panel.h>
#include <drm/bridge/ptn3460.h>
#include "exynos_drm_drv.h"
struct device_node *node;
};
-static int exynos_dp_init_dp(struct exynos_dp_device *dp)
+static void exynos_dp_init_dp(struct exynos_dp_device *dp)
{
exynos_dp_reset(dp);
exynos_dp_init_hpd(dp);
exynos_dp_init_aux(dp);
-
- return 0;
}
static int exynos_dp_detect_hpd(struct exynos_dp_device *dp)
static void exynos_dp_hotplug(struct work_struct *work)
{
struct exynos_dp_device *dp;
- int ret;
dp = container_of(work, struct exynos_dp_device, hotplug_work);
+ if (dp->drm_dev)
+ drm_helper_hpd_irq_event(dp->drm_dev);
+}
+
+static void exynos_dp_commit(struct exynos_drm_display *display)
+{
+ struct exynos_dp_device *dp = display->ctx;
+ int ret;
+
+ /* Keep the panel disabled while we configure video */
+ if (dp->panel) {
+ if (drm_panel_disable(dp->panel))
+ DRM_ERROR("failed to disable the panel\n");
+ }
+
ret = exynos_dp_detect_hpd(dp);
if (ret) {
/* Cable has been disconnected, we're done */
ret = exynos_dp_config_video(dp);
if (ret)
dev_err(dp->dev, "unable to config video\n");
+
+ /* Safe to enable the panel now */
+ if (dp->panel) {
+ if (drm_panel_enable(dp->panel))
+ DRM_ERROR("failed to enable the panel\n");
+ }
}
static enum drm_connector_status exynos_dp_detect(
struct exynos_dp_device *dp = ctx_from_connector(connector);
struct drm_display_mode *mode;
+ if (dp->panel)
+ return drm_panel_get_modes(dp->panel);
+
mode = drm_mode_create(connector->dev);
if (!mode) {
DRM_ERROR("failed to create a new display mode.\n");
return 0;
}
- drm_display_mode_from_videomode(&dp->panel.vm, mode);
- mode->width_mm = dp->panel.width_mm;
- mode->height_mm = dp->panel.height_mm;
+ drm_display_mode_from_videomode(&dp->priv.vm, mode);
+ mode->width_mm = dp->priv.width_mm;
+ mode->height_mm = dp->priv.height_mm;
connector->display_info.width_mm = mode->width_mm;
connector->display_info.height_mm = mode->height_mm;
drm_connector_register(connector);
drm_mode_connector_attach_encoder(connector, encoder);
- return 0;
+ if (dp->panel)
+ ret = drm_panel_attach(dp->panel, &dp->connector);
+
+ return ret;
}
static void exynos_dp_phy_init(struct exynos_dp_device *dp)
}
}
-static void exynos_dp_poweron(struct exynos_dp_device *dp)
+static void exynos_dp_poweron(struct exynos_drm_display *display)
{
+ struct exynos_dp_device *dp = display->ctx;
+
if (dp->dpms_mode == DRM_MODE_DPMS_ON)
return;
+ if (dp->panel) {
+ if (drm_panel_prepare(dp->panel)) {
+ DRM_ERROR("failed to setup the panel\n");
+ return;
+ }
+ }
+
clk_prepare_enable(dp->clock);
exynos_dp_phy_init(dp);
exynos_dp_init_dp(dp);
enable_irq(dp->irq);
+ exynos_dp_commit(display);
}
-static void exynos_dp_poweroff(struct exynos_dp_device *dp)
+static void exynos_dp_poweroff(struct exynos_drm_display *display)
{
+ struct exynos_dp_device *dp = display->ctx;
+
if (dp->dpms_mode != DRM_MODE_DPMS_ON)
return;
+ if (dp->panel) {
+ if (drm_panel_disable(dp->panel)) {
+ DRM_ERROR("failed to disable the panel\n");
+ return;
+ }
+ }
+
disable_irq(dp->irq);
flush_work(&dp->hotplug_work);
exynos_dp_phy_exit(dp);
clk_disable_unprepare(dp->clock);
+
+ if (dp->panel) {
+ if (drm_panel_unprepare(dp->panel))
+ DRM_ERROR("failed to turnoff the panel\n");
+ }
}
static void exynos_dp_dpms(struct exynos_drm_display *display, int mode)
switch (mode) {
case DRM_MODE_DPMS_ON:
- exynos_dp_poweron(dp);
+ exynos_dp_poweron(display);
break;
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
case DRM_MODE_DPMS_OFF:
- exynos_dp_poweroff(dp);
+ exynos_dp_poweroff(display);
break;
default:
break;
static struct exynos_drm_display_ops exynos_dp_display_ops = {
.create_connector = exynos_dp_create_connector,
.dpms = exynos_dp_dpms,
+ .commit = exynos_dp_commit,
};
static struct exynos_drm_display exynos_dp_display = {
{
int ret;
- ret = of_get_videomode(dp->dev->of_node, &dp->panel.vm,
+ ret = of_get_videomode(dp->dev->of_node, &dp->priv.vm,
OF_USE_NATIVE_MODE);
if (ret) {
DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm_dev = data;
struct resource *res;
- struct exynos_dp_device *dp;
+ struct exynos_dp_device *dp = exynos_dp_display.ctx;
unsigned int irq_flags;
-
int ret = 0;
- dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
- GFP_KERNEL);
- if (!dp)
- return -ENOMEM;
-
dp->dev = &pdev->dev;
dp->dpms_mode = DRM_MODE_DPMS_OFF;
if (ret)
return ret;
- ret = exynos_dp_dt_parse_panel(dp);
- if (ret)
- return ret;
+ if (!dp->panel) {
+ ret = exynos_dp_dt_parse_panel(dp);
+ if (ret)
+ return ret;
+ }
dp->clock = devm_clk_get(&pdev->dev, "dp");
if (IS_ERR(dp->clock)) {
disable_irq(dp->irq);
dp->drm_dev = drm_dev;
- exynos_dp_display.ctx = dp;
platform_set_drvdata(pdev, &exynos_dp_display);
static int exynos_dp_probe(struct platform_device *pdev)
{
+ struct device *dev = &pdev->dev;
+ struct device_node *panel_node;
+ struct exynos_dp_device *dp;
int ret;
ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR,
if (ret)
return ret;
+ dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
+ GFP_KERNEL);
+ if (!dp)
+ return -ENOMEM;
+
+ panel_node = of_parse_phandle(dev->of_node, "panel", 0);
+ if (panel_node) {
+ dp->panel = of_drm_find_panel(panel_node);
+ of_node_put(panel_node);
+ if (!dp->panel)
+ return -EPROBE_DEFER;
+ }
+
+ exynos_dp_display.ctx = dp;
+
ret = component_add(&pdev->dev, &exynos_dp_ops);
if (ret)
exynos_drm_component_del(&pdev->dev,
projects / cascardo / linux.git / blobdiff