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path: root/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
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Diffstat (limited to 'drivers/gpu/drm/arm/display/komeda/komeda_crtc.c')
-rw-r--r--drivers/gpu/drm/arm/display/komeda/komeda_crtc.c83
1 files changed, 64 insertions, 19 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
index 4cc07d6bb9d8..5a66948ffd24 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
@@ -5,14 +5,16 @@
*
*/
#include <linux/clk.h>
+#include <linux/of.h>
#include <linux/pm_runtime.h>
#include <linux/spinlock.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
-#include <drm/drm_crtc_helper.h>
#include <drm/drm_print.h>
#include <drm/drm_vblank.h>
+#include <drm/drm_simple_kms_helper.h>
+#include <drm/drm_bridge.h>
#include "komeda_dev.h"
#include "komeda_kms.h"
@@ -109,6 +111,7 @@ komeda_crtc_atomic_check(struct drm_crtc *crtc,
static int
komeda_crtc_prepare(struct komeda_crtc *kcrtc)
{
+ struct drm_device *drm = kcrtc->base.dev;
struct komeda_dev *mdev = kcrtc->base.dev->dev_private;
struct komeda_pipeline *master = kcrtc->master;
struct komeda_crtc_state *kcrtc_st = to_kcrtc_st(kcrtc->base.state);
@@ -126,8 +129,8 @@ komeda_crtc_prepare(struct komeda_crtc *kcrtc)
err = mdev->funcs->change_opmode(mdev, new_mode);
if (err) {
- DRM_ERROR("failed to change opmode: 0x%x -> 0x%x.\n,",
- mdev->dpmode, new_mode);
+ drm_err(drm, "failed to change opmode: 0x%x -> 0x%x.\n,",
+ mdev->dpmode, new_mode);
goto unlock;
}
@@ -140,18 +143,18 @@ komeda_crtc_prepare(struct komeda_crtc *kcrtc)
if (new_mode != KOMEDA_MODE_DUAL_DISP) {
err = clk_set_rate(mdev->aclk, komeda_crtc_get_aclk(kcrtc_st));
if (err)
- DRM_ERROR("failed to set aclk.\n");
+ drm_err(drm, "failed to set aclk.\n");
err = clk_prepare_enable(mdev->aclk);
if (err)
- DRM_ERROR("failed to enable aclk.\n");
+ drm_err(drm, "failed to enable aclk.\n");
}
err = clk_set_rate(master->pxlclk, mode->crtc_clock * 1000);
if (err)
- DRM_ERROR("failed to set pxlclk for pipe%d\n", master->id);
+ drm_err(drm, "failed to set pxlclk for pipe%d\n", master->id);
err = clk_prepare_enable(master->pxlclk);
if (err)
- DRM_ERROR("failed to enable pxl clk for pipe%d.\n", master->id);
+ drm_err(drm, "failed to enable pxl clk for pipe%d.\n", master->id);
unlock:
mutex_unlock(&mdev->lock);
@@ -162,6 +165,7 @@ unlock:
static int
komeda_crtc_unprepare(struct komeda_crtc *kcrtc)
{
+ struct drm_device *drm = kcrtc->base.dev;
struct komeda_dev *mdev = kcrtc->base.dev->dev_private;
struct komeda_pipeline *master = kcrtc->master;
u32 new_mode;
@@ -178,8 +182,8 @@ komeda_crtc_unprepare(struct komeda_crtc *kcrtc)
err = mdev->funcs->change_opmode(mdev, new_mode);
if (err) {
- DRM_ERROR("failed to change opmode: 0x%x -> 0x%x.\n,",
- mdev->dpmode, new_mode);
+ drm_err(drm, "failed to change opmode: 0x%x -> 0x%x.\n,",
+ mdev->dpmode, new_mode);
goto unlock;
}
@@ -198,6 +202,7 @@ unlock:
void komeda_crtc_handle_event(struct komeda_crtc *kcrtc,
struct komeda_events *evts)
{
+ struct drm_device *drm = kcrtc->base.dev;
struct drm_crtc *crtc = &kcrtc->base;
u32 events = evts->pipes[kcrtc->master->id];
@@ -210,7 +215,7 @@ void komeda_crtc_handle_event(struct komeda_crtc *kcrtc,
if (wb_conn)
drm_writeback_signal_completion(&wb_conn->base, 0);
else
- DRM_WARN("CRTC[%d]: EOW happen but no wb_connector.\n",
+ drm_warn(drm, "CRTC[%d]: EOW happen but no wb_connector.\n",
drm_crtc_index(&kcrtc->base));
}
/* will handle it together with the write back support */
@@ -234,7 +239,7 @@ void komeda_crtc_handle_event(struct komeda_crtc *kcrtc,
crtc->state->event = NULL;
drm_crtc_send_vblank_event(crtc, event);
} else {
- DRM_WARN("CRTC[%d]: FLIP happened but no pending commit.\n",
+ drm_warn(drm, "CRTC[%d]: FLIP happened but no pending commit.\n",
drm_crtc_index(&kcrtc->base));
}
spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
@@ -293,7 +298,6 @@ komeda_crtc_flush_and_wait_for_flip_done(struct komeda_crtc *kcrtc,
struct komeda_dev *mdev = kcrtc->master->mdev;
struct completion *flip_done;
struct completion temp;
- int timeout;
/* if caller doesn't send a flip_done, use a private flip_done */
if (input_flip_done) {
@@ -307,9 +311,8 @@ komeda_crtc_flush_and_wait_for_flip_done(struct komeda_crtc *kcrtc,
mdev->funcs->flush(mdev, kcrtc->master->id, 0);
/* wait the flip take affect.*/
- timeout = wait_for_completion_timeout(flip_done, HZ);
- if (timeout == 0) {
- DRM_ERROR("wait pipe%d flip done timeout\n", kcrtc->master->id);
+ if (wait_for_completion_timeout(flip_done, HZ) == 0) {
+ drm_err(drm, "wait pipe%d flip done timeout\n", kcrtc->master->id);
if (!input_flip_done) {
unsigned long flags;
@@ -562,6 +565,7 @@ static const struct drm_crtc_funcs komeda_crtc_funcs = {
int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms,
struct komeda_dev *mdev)
{
+ struct drm_device *drm = &kms->base;
struct komeda_crtc *crtc;
struct komeda_pipeline *master;
char str[16];
@@ -581,7 +585,7 @@ int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms,
else
sprintf(str, "None");
- DRM_INFO("CRTC-%d: master(pipe-%d) slave(%s).\n",
+ drm_info(drm, "CRTC-%d: master(pipe-%d) slave(%s).\n",
kms->n_crtcs, master->id, str);
kms->n_crtcs++;
@@ -609,13 +613,38 @@ get_crtc_primary(struct komeda_kms_dev *kms, struct komeda_crtc *crtc)
return NULL;
}
+static int komeda_attach_bridge(struct device *dev,
+ struct komeda_pipeline *pipe,
+ struct drm_encoder *encoder)
+{
+ struct drm_device *drm = encoder->dev;
+ struct drm_bridge *bridge;
+ int err;
+
+ bridge = devm_drm_of_get_bridge(dev, pipe->of_node,
+ KOMEDA_OF_PORT_OUTPUT, 0);
+ if (IS_ERR(bridge))
+ return dev_err_probe(dev, PTR_ERR(bridge), "remote bridge not found for pipe: %s\n",
+ of_node_full_name(pipe->of_node));
+
+ err = drm_bridge_attach(encoder, bridge, NULL, 0);
+ if (err)
+ drm_err(drm, "bridge_attach() failed for pipe: %s\n",
+ of_node_full_name(pipe->of_node));
+
+ return err;
+}
+
static int komeda_crtc_add(struct komeda_kms_dev *kms,
struct komeda_crtc *kcrtc)
{
struct drm_crtc *crtc = &kcrtc->base;
+ struct drm_device *base = &kms->base;
+ struct komeda_pipeline *pipe = kcrtc->master;
+ struct drm_encoder *encoder = &kcrtc->encoder;
int err;
- err = drm_crtc_init_with_planes(&kms->base, crtc,
+ err = drm_crtc_init_with_planes(base, crtc,
get_crtc_primary(kms, kcrtc), NULL,
&komeda_crtc_funcs, NULL);
if (err)
@@ -623,11 +652,27 @@ static int komeda_crtc_add(struct komeda_kms_dev *kms,
drm_crtc_helper_add(crtc, &komeda_crtc_helper_funcs);
- crtc->port = kcrtc->master->of_output_port;
+ crtc->port = pipe->of_output_port;
+
+ /* Construct an encoder for each pipeline and attach it to the remote
+ * bridge
+ */
+ kcrtc->encoder.possible_crtcs = drm_crtc_mask(crtc);
+ err = drm_simple_encoder_init(base, encoder, DRM_MODE_ENCODER_TMDS);
+ if (err)
+ return err;
+
+ if (pipe->of_output_links[0]) {
+ err = komeda_attach_bridge(base->dev, pipe, encoder);
+ if (err)
+ return err;
+ }
drm_crtc_enable_color_mgmt(crtc, 0, true, KOMEDA_COLOR_LUT_SIZE);
- return err;
+ komeda_pipeline_dump(pipe);
+
+ return 0;
}
int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev)
generated by cgit (git 2.34.1) at 2025-12-26 15:54:04 +0000