The audio clock is an external resource from the DPSUB point of view,
not a resource internal to the display controller. Move it to the
zynqmp_dpsub structure, to allow accessing it from outside the disp
code.
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/xlnx/zynqmp_disp.c | 54 ++---------------------------
drivers/gpu/drm/xlnx/zynqmp_disp.h | 2 --
drivers/gpu/drm/xlnx/zynqmp_dp.c | 8 ++---
drivers/gpu/drm/xlnx/zynqmp_dpsub.c | 54 +++++++++++++++++++++++++++--
drivers/gpu/drm/xlnx/zynqmp_dpsub.h | 7 ++++
5 files changed, 65 insertions(+), 60 deletions(-)
diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 62f9daf93465..640be60c4214 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -167,8 +167,6 @@ struct zynqmp_disp_layer {
* @blend.base: Register I/O base address for the blender
* @avbuf.base: Register I/O base address for the audio/video buffer manager
* @audio.base: Registers I/O base address for the audio mixer
- * @audio.clk: Audio clock
- * @audio.clk_from_ps: True of the audio clock comes from PS, false from PL
* @layers: Layers (planes)
*/
struct zynqmp_disp {
@@ -186,8 +184,6 @@ struct zynqmp_disp {
} avbuf;
struct {
void __iomem *base;
- struct clk *clk;
- bool clk_from_ps;
} audio;
struct zynqmp_disp_layer layers[ZYNQMP_DISP_NUM_LAYERS];
@@ -893,25 +889,6 @@ static void zynqmp_disp_audio_disable(struct zynqmp_disp *disp)
ZYNQMP_DISP_AUD_SOFT_RESET_AUD_SRST);
}
-static void zynqmp_disp_audio_init(struct zynqmp_disp *disp)
-{
- /* Try the live PL audio clock. */
- disp->audio.clk = devm_clk_get(disp->dev, "dp_live_audio_aclk");
- if (!IS_ERR(disp->audio.clk)) {
- disp->audio.clk_from_ps = false;
- return;
- }
-
- /* If the live PL audio clock is not valid, fall back to PS clock. */
- disp->audio.clk = devm_clk_get(disp->dev, "dp_aud_clk");
- if (!IS_ERR(disp->audio.clk)) {
- disp->audio.clk_from_ps = true;
- return;
- }
-
- dev_err(disp->dev, "audio disabled due to missing clock\n");
-}
-
/* -----------------------------------------------------------------------------
* ZynqMP Display external functions for zynqmp_dp
*/
@@ -930,32 +907,6 @@ void zynqmp_disp_handle_vblank(struct zynqmp_disp *disp)
drm_crtc_handle_vblank(crtc);
}
-/**
- * zynqmp_disp_audio_enabled - If the audio is enabled
- * @disp: Display controller
- *
- * Return if the audio is enabled depending on the audio clock.
- *
- * Return: true if audio is enabled, or false.
- */
-bool zynqmp_disp_audio_enabled(struct zynqmp_disp *disp)
-{
- return !!disp->audio.clk;
-}
-
-/**
- * zynqmp_disp_get_audio_clk_rate - Get the current audio clock rate
- * @disp: Display controller
- *
- * Return: the current audio clock rate.
- */
-unsigned int zynqmp_disp_get_audio_clk_rate(struct zynqmp_disp *disp)
-{
- if (zynqmp_disp_audio_enabled(disp))
- return 0;
- return clk_get_rate(disp->audio.clk);
-}
-
/**
* zynqmp_disp_get_crtc_mask - Return the CRTC bit mask
* @disp: Display controller
@@ -1409,7 +1360,8 @@ static void zynqmp_disp_enable(struct zynqmp_disp *disp)
zynqmp_disp_avbuf_enable(disp);
/* Choose clock source based on the DT clock handle. */
zynqmp_disp_avbuf_set_clocks_sources(disp, disp->dpsub->vid_clk_from_ps,
- disp->audio.clk_from_ps, true);
+ disp->dpsub->aud_clk_from_ps,
+ true);
zynqmp_disp_avbuf_enable_channels(disp);
zynqmp_disp_avbuf_enable_audio(disp);
@@ -1670,8 +1622,6 @@ int zynqmp_disp_probe(struct zynqmp_dpsub *dpsub, struct drm_device *drm)
if (IS_ERR(disp->audio.base))
return PTR_ERR(disp->audio.base);
- zynqmp_disp_audio_init(disp);
-
ret = zynqmp_disp_create_layers(disp);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.h b/drivers/gpu/drm/xlnx/zynqmp_disp.h
index f402901afb23..1b7f90a81857 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.h
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.h
@@ -31,8 +31,6 @@ struct zynqmp_disp;
struct zynqmp_dpsub;
void zynqmp_disp_handle_vblank(struct zynqmp_disp *disp);
-bool zynqmp_disp_audio_enabled(struct zynqmp_disp *disp);
-unsigned int zynqmp_disp_get_audio_clk_rate(struct zynqmp_disp *disp);
uint32_t zynqmp_disp_get_crtc_mask(struct zynqmp_disp *disp);
int zynqmp_disp_drm_init(struct zynqmp_dpsub *dpsub);
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
index 33fd69ed7550..3e4d164d40fe 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
@@ -1252,7 +1252,7 @@ static void zynqmp_dp_encoder_mode_set_stream(struct zynqmp_dp *dp,
reg = drm_dp_bw_code_to_link_rate(dp->mode.bw_code);
zynqmp_dp_write(dp, ZYNQMP_DP_MAIN_STREAM_N_VID, reg);
zynqmp_dp_write(dp, ZYNQMP_DP_MAIN_STREAM_M_VID, mode->clock);
- rate = zynqmp_disp_get_audio_clk_rate(dp->dpsub->disp);
+ rate = zynqmp_dpsub_get_audio_clk_rate(dp->dpsub);
if (rate) {
dev_dbg(dp->dev, "Audio rate: %d\n", rate / 512);
zynqmp_dp_write(dp, ZYNQMP_DP_TX_N_AUD, reg);
@@ -1261,7 +1261,7 @@ static void zynqmp_dp_encoder_mode_set_stream(struct zynqmp_dp *dp,
}
/* Only 2 channel audio is supported now */
- if (zynqmp_disp_audio_enabled(dp->dpsub->disp))
+ if (zynqmp_dpsub_audio_enabled(dp->dpsub))
zynqmp_dp_write(dp, ZYNQMP_DP_TX_AUDIO_CHANNELS, 1);
zynqmp_dp_write(dp, ZYNQMP_DP_USER_PIX_WIDTH, 1);
@@ -1372,7 +1372,7 @@ static void zynqmp_dp_bridge_atomic_enable(struct drm_bridge *bridge,
/* Enable the encoder */
dp->enabled = true;
zynqmp_dp_update_misc(dp);
- if (zynqmp_disp_audio_enabled(dp->dpsub->disp))
+ if (zynqmp_dpsub_audio_enabled(dp->dpsub))
zynqmp_dp_write(dp, ZYNQMP_DP_TX_AUDIO_CONTROL, 1);
zynqmp_dp_write(dp, ZYNQMP_DP_TX_PHY_POWER_DOWN, 0);
if (dp->status == connector_status_connected) {
@@ -1406,7 +1406,7 @@ static void zynqmp_dp_bridge_atomic_disable(struct drm_bridge *bridge,
drm_dp_dpcd_writeb(&dp->aux, DP_SET_POWER, DP_SET_POWER_D3);
zynqmp_dp_write(dp, ZYNQMP_DP_TX_PHY_POWER_DOWN,
ZYNQMP_DP_TX_PHY_POWER_DOWN_ALL);
- if (zynqmp_disp_audio_enabled(dp->dpsub->disp))
+ if (zynqmp_dpsub_audio_enabled(dp->dpsub))
zynqmp_dp_write(dp, ZYNQMP_DP_TX_AUDIO_CONTROL, 0);
pm_runtime_put_sync(dp->dev);
}
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
index a278a73e1713..cb01548f2b8c 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
@@ -196,6 +196,36 @@ static const struct dev_pm_ops zynqmp_dpsub_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(zynqmp_dpsub_suspend, zynqmp_dpsub_resume)
};
+/* -----------------------------------------------------------------------------
+ * DPSUB Configuration
+ */
+
+/**
+ * zynqmp_dpsub_audio_enabled - If the audio is enabled
+ * @dpsub: DisplayPort subsystem
+ *
+ * Return if the audio is enabled depending on the audio clock.
+ *
+ * Return: true if audio is enabled, or false.
+ */
+bool zynqmp_dpsub_audio_enabled(struct zynqmp_dpsub *dpsub)
+{
+ return !!dpsub->aud_clk;
+}
+
+/**
+ * zynqmp_dpsub_get_audio_clk_rate - Get the current audio clock rate
+ * @dpsub: DisplayPort subsystem
+ *
+ * Return: the current audio clock rate.
+ */
+unsigned int zynqmp_dpsub_get_audio_clk_rate(struct zynqmp_dpsub *dpsub)
+{
+ if (zynqmp_dpsub_audio_enabled(dpsub))
+ return 0;
+ return clk_get_rate(dpsub->aud_clk);
+}
+
/* -----------------------------------------------------------------------------
* Probe & Remove
*/
@@ -214,14 +244,16 @@ static int zynqmp_dpsub_init_clocks(struct zynqmp_dpsub *dpsub)
return ret;
}
- /* Try the live PL video clock */
+ /*
+ * Try the live PL video clock, and fall back to the PS clock if the
+ * live PL video clock isn't valid.
+ */
dpsub->vid_clk = devm_clk_get(dpsub->dev, "dp_live_video_in_clk");
if (!IS_ERR(dpsub->vid_clk))
dpsub->vid_clk_from_ps = false;
else if (PTR_ERR(dpsub->vid_clk) == -EPROBE_DEFER)
return PTR_ERR(dpsub->vid_clk);
- /* If the live PL video clock is not valid, fall back to PS clock */
if (IS_ERR_OR_NULL(dpsub->vid_clk)) {
dpsub->vid_clk = devm_clk_get(dpsub->dev, "dp_vtc_pixel_clk_in");
if (IS_ERR(dpsub->vid_clk)) {
@@ -231,6 +263,24 @@ static int zynqmp_dpsub_init_clocks(struct zynqmp_dpsub *dpsub)
dpsub->vid_clk_from_ps = true;
}
+ /*
+ * Try the live PL audio clock, and fall back to the PS clock if the
+ * live PL audio clock isn't valid. Missing audio clock disables audio
+ * but isn't an error.
+ */
+ dpsub->aud_clk = devm_clk_get(dpsub->dev, "dp_live_audio_aclk");
+ if (!IS_ERR(dpsub->aud_clk)) {
+ dpsub->aud_clk_from_ps = false;
+ return 0;
+ }
+
+ dpsub->aud_clk = devm_clk_get(dpsub->dev, "dp_aud_clk");
+ if (!IS_ERR(dpsub->aud_clk)) {
+ dpsub->aud_clk_from_ps = true;
+ return 0;
+ }
+
+ dev_info(dpsub->dev, "audio disabled due to missing clock\n");
return 0;
}
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dpsub.h b/drivers/gpu/drm/xlnx/zynqmp_dpsub.h
index bcb119bb97e1..5bd42e192e17 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dpsub.h
+++ b/drivers/gpu/drm/xlnx/zynqmp_dpsub.h
@@ -35,6 +35,8 @@ enum zynqmp_dpsub_format {
* @apb_clk: The APB clock
* @vid_clk: Video clock
* @vid_clk_from_ps: True of the video clock comes from PS, false from PL
+ * @aud_clk: Audio clock
+ * @aud_clk_from_ps: True of the audio clock comes from PS, false from PL
* @encoder: The dummy DRM encoder
* @bridge: The DP encoder bridge
* @disp: The display controller
@@ -48,6 +50,8 @@ struct zynqmp_dpsub {
struct clk *apb_clk;
struct clk *vid_clk;
bool vid_clk_from_ps;
+ struct clk *aud_clk;
+ bool aud_clk_from_ps;
struct drm_encoder encoder;
struct drm_bridge *bridge;
@@ -63,4 +67,7 @@ static inline struct zynqmp_dpsub *to_zynqmp_dpsub(struct drm_device *drm)
return container_of(drm, struct zynqmp_dpsub, drm);
}
+bool zynqmp_dpsub_audio_enabled(struct zynqmp_dpsub *dpsub);
+unsigned int zynqmp_dpsub_get_audio_clk_rate(struct zynqmp_dpsub *dpsub);
+
#endif /* _ZYNQMP_DPSUB_H_ */
--
Regards,
Laurent Pinchart
