drm/imx: atomic phase 3 step 2: Legacy callback fixups

Now that we can use atomic configurations, all the legacy callbacks
of CRTCs, encoders and connectors can be switched to the atomic version.
For the imx-ldb driver, there is a clock parent setting mismatch bewteen
->enable and ->disable after the switch, so a fixup is added.  For the
imx-tve driver, since the encoder's callback ->dpms is replaced by
->disable, we need to move the setting for the IPU_CLK_EN bit(in register
TVE_COM_CONF_REG) from ->enable/->disable to ->mode_set, otherwise, the
relevant CRTC cannot be disabled correctly with a warning on DC stop timeout.

Signed-off-by: Liu Ying <gnuiyl@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

5 files changed, 27 insertions, 82 deletions

diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c
index 5f64674..5f1d437 100644
--- a/drivers/gpu/drm/imx/dw_hdmi-imx.c
+++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c
@@ -117,7 +117,7 @@ static void dw_hdmi_imx_encoder_mode_set(struct drm_encoder *encoder,
 {
 }
 
-static void dw_hdmi_imx_encoder_commit(struct drm_encoder *encoder)
+static void dw_hdmi_imx_encoder_enable(struct drm_encoder *encoder)
 {
 	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
 	struct imx_hdmi *hdmi = imx_enc_to_imx_hdmi(imx_encoder);
@@ -130,7 +130,7 @@ static void dw_hdmi_imx_encoder_commit(struct drm_encoder *encoder)
 
 static const struct drm_encoder_helper_funcs dw_hdmi_imx_encoder_helper_funcs = {
 	.mode_set   = dw_hdmi_imx_encoder_mode_set,
-	.commit     = dw_hdmi_imx_encoder_commit,
+	.enable     = dw_hdmi_imx_encoder_enable,
 	.disable    = dw_hdmi_imx_encoder_disable,
 };
 
diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index 6e110bb..9c48c4b 100644
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -172,10 +172,6 @@ static struct drm_encoder *imx_ldb_connector_best_encoder(
 	return &imx_ldb_ch->imx_encoder.encoder;
 }
 
-static void imx_ldb_encoder_dpms(struct drm_encoder *encoder, int mode)
-{
-}
-
 static void imx_ldb_set_clock(struct imx_ldb *ldb, int mux, int chno,
 		unsigned long serial_clk, unsigned long di_clk)
 {
@@ -204,7 +200,7 @@ static void imx_ldb_set_clock(struct imx_ldb *ldb, int mux, int chno,
 			chno);
 }
 
-static void imx_ldb_encoder_commit(struct drm_encoder *encoder)
+static void imx_ldb_encoder_enable(struct drm_encoder *encoder)
 {
 	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
 	struct imx_ldb_channel *imx_ldb_ch = imx_enc_to_imx_ldb_ch(imx_encoder);
@@ -215,8 +211,13 @@ static void imx_ldb_encoder_commit(struct drm_encoder *encoder)
 	drm_panel_prepare(imx_ldb_ch->panel);
 
 	if (dual) {
+		clk_set_parent(ldb->clk_sel[mux], ldb->clk[0]);
+		clk_set_parent(ldb->clk_sel[mux], ldb->clk[1]);
+
 		clk_prepare_enable(ldb->clk[0]);
 		clk_prepare_enable(ldb->clk[1]);
+	} else {
+		clk_set_parent(ldb->clk_sel[mux], ldb->clk[imx_ldb_ch->chno]);
 	}
 
 	if (imx_ldb_ch == &ldb->channel[0] || dual) {
@@ -356,7 +357,7 @@ static void imx_ldb_encoder_disable(struct drm_encoder *encoder)
 }
 
 static const struct drm_connector_funcs imx_ldb_connector_funcs = {
-	.dpms = drm_helper_connector_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.detect = imx_ldb_connector_detect,
 	.destroy = imx_drm_connector_destroy,
@@ -375,9 +376,8 @@ static const struct drm_encoder_funcs imx_ldb_encoder_funcs = {
 };
 
 static const struct drm_encoder_helper_funcs imx_ldb_encoder_helper_funcs = {
-	.dpms = imx_ldb_encoder_dpms,
-	.commit = imx_ldb_encoder_commit,
 	.mode_set = imx_ldb_encoder_mode_set,
+	.enable = imx_ldb_encoder_enable,
 	.disable = imx_ldb_encoder_disable,
 };
 
diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index 82a1edd..cd92aac 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -147,8 +147,7 @@ static void tve_enable(struct imx_tve *tve)
 		tve->enabled = true;
 		clk_prepare_enable(tve->clk);
 		ret = regmap_update_bits(tve->regmap, TVE_COM_CONF_REG,
-					 TVE_IPU_CLK_EN | TVE_EN,
-					 TVE_IPU_CLK_EN | TVE_EN);
+					 TVE_EN, TVE_EN);
 	}
 
 	/* clear interrupt status register */
@@ -171,7 +170,7 @@ static void tve_disable(struct imx_tve *tve)
 	if (tve->enabled) {
 		tve->enabled = false;
 		ret = regmap_update_bits(tve->regmap, TVE_COM_CONF_REG,
-					 TVE_IPU_CLK_EN | TVE_EN, 0);
+					 TVE_EN, 0);
 		clk_disable_unprepare(tve->clk);
 	}
 }
@@ -274,18 +273,6 @@ static struct drm_encoder *imx_tve_connector_best_encoder(
 	return &tve->imx_encoder.encoder;
 }
 
-static void imx_tve_encoder_dpms(struct drm_encoder *encoder, int mode)
-{
-	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
-	struct imx_tve *tve = imx_enc_to_tve(imx_encoder);
-	int ret;
-
-	ret = regmap_update_bits(tve->regmap, TVE_COM_CONF_REG,
-				 TVE_TV_OUT_MODE_MASK, TVE_TV_OUT_DISABLE);
-	if (ret < 0)
-		dev_err(tve->dev, "failed to disable TVOUT: %d\n", ret);
-}
-
 static void imx_tve_encoder_mode_set(struct drm_encoder *encoder,
 				     struct drm_display_mode *orig_mode,
 				     struct drm_display_mode *mode)
@@ -315,6 +302,9 @@ static void imx_tve_encoder_mode_set(struct drm_encoder *encoder,
 			ret);
 	}
 
+	regmap_update_bits(tve->regmap, TVE_COM_CONF_REG,
+			   TVE_IPU_CLK_EN, TVE_IPU_CLK_EN);
+
 	if (tve->mode == TVE_MODE_VGA)
 		ret = tve_setup_vga(tve);
 	else
@@ -323,7 +313,7 @@ static void imx_tve_encoder_mode_set(struct drm_encoder *encoder,
 		dev_err(tve->dev, "failed to set configuration: %d\n", ret);
 }
 
-static void imx_tve_encoder_commit(struct drm_encoder *encoder)
+static void imx_tve_encoder_enable(struct drm_encoder *encoder)
 {
 	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
 	struct imx_tve *tve = imx_enc_to_tve(imx_encoder);
@@ -340,7 +330,7 @@ static void imx_tve_encoder_disable(struct drm_encoder *encoder)
 }
 
 static const struct drm_connector_funcs imx_tve_connector_funcs = {
-	.dpms = drm_helper_connector_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.detect = imx_tve_connector_detect,
 	.destroy = imx_drm_connector_destroy,
@@ -360,9 +350,8 @@ static const struct drm_encoder_funcs imx_tve_encoder_funcs = {
 };
 
 static const struct drm_encoder_helper_funcs imx_tve_encoder_helper_funcs = {
-	.dpms = imx_tve_encoder_dpms,
 	.mode_set = imx_tve_encoder_mode_set,
-	.commit = imx_tve_encoder_commit,
+	.enable = imx_tve_encoder_enable,
 	.disable = imx_tve_encoder_disable,
 };
 
diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c
index 3e82534..274b0e2 100644
--- a/drivers/gpu/drm/imx/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
@@ -48,8 +48,9 @@ struct ipu_crtc {
 
 #define to_ipu_crtc(x) container_of(x, struct ipu_crtc, base)
 
-static void ipu_crtc_enable(struct ipu_crtc *ipu_crtc)
+static void ipu_crtc_enable(struct drm_crtc *crtc)
 {
+	struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
 	struct ipu_soc *ipu = dev_get_drvdata(ipu_crtc->dev->parent);
 
 	ipu_dc_enable(ipu);
@@ -57,10 +58,10 @@ static void ipu_crtc_enable(struct ipu_crtc *ipu_crtc)
 	ipu_di_enable(ipu_crtc->di);
 }
 
-static void ipu_crtc_disable(struct ipu_crtc *ipu_crtc)
+static void ipu_crtc_disable(struct drm_crtc *crtc)
 {
+	struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
 	struct ipu_soc *ipu = dev_get_drvdata(ipu_crtc->dev->parent);
-	struct drm_crtc *crtc = &ipu_crtc->base;
 
 	ipu_dc_disable_channel(ipu_crtc->dc);
 	ipu_di_disable(ipu_crtc->di);
@@ -74,24 +75,6 @@ static void ipu_crtc_disable(struct ipu_crtc *ipu_crtc)
 	spin_unlock_irq(&crtc->dev->event_lock);
 }
 
-static void ipu_crtc_dpms(struct drm_crtc *crtc, int mode)
-{
-	struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
-
-	dev_dbg(ipu_crtc->dev, "%s mode: %d\n", __func__, mode);
-
-	switch (mode) {
-	case DRM_MODE_DPMS_ON:
-		ipu_crtc_enable(ipu_crtc);
-		break;
-	case DRM_MODE_DPMS_STANDBY:
-	case DRM_MODE_DPMS_SUSPEND:
-	case DRM_MODE_DPMS_OFF:
-		ipu_crtc_disable(ipu_crtc);
-		break;
-	}
-}
-
 static const struct drm_crtc_funcs ipu_crtc_funcs = {
 	.set_config = drm_atomic_helper_set_config,
 	.destroy = drm_crtc_cleanup,
@@ -132,20 +115,6 @@ static bool ipu_crtc_mode_fixup(struct drm_crtc *crtc,
 	return true;
 }
 
-static void ipu_crtc_prepare(struct drm_crtc *crtc)
-{
-	struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
-
-	ipu_crtc_disable(ipu_crtc);
-}
-
-static void ipu_crtc_commit(struct drm_crtc *crtc)
-{
-	struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
-
-	ipu_crtc_enable(ipu_crtc);
-}
-
 static int ipu_crtc_atomic_check(struct drm_crtc *crtc,
 				 struct drm_crtc_state *state)
 {
@@ -225,13 +194,12 @@ static void ipu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 }
 
 static const struct drm_crtc_helper_funcs ipu_helper_funcs = {
-	.dpms = ipu_crtc_dpms,
 	.mode_fixup = ipu_crtc_mode_fixup,
 	.mode_set_nofb = ipu_crtc_mode_set_nofb,
-	.prepare = ipu_crtc_prepare,
-	.commit = ipu_crtc_commit,
 	.atomic_check = ipu_crtc_atomic_check,
 	.atomic_begin = ipu_crtc_atomic_begin,
+	.disable = ipu_crtc_disable,
+	.enable = ipu_crtc_enable,
 };
 
 static int ipu_enable_vblank(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index 7374d82..bb5dbd6 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -92,18 +92,7 @@ static struct drm_encoder *imx_pd_connector_best_encoder(
 	return &imxpd->imx_encoder.encoder;
 }
 
-static void imx_pd_encoder_dpms(struct drm_encoder *encoder, int mode)
-{
-	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
-	struct imx_parallel_display *imxpd = imx_enc_to_imxpd(imx_encoder);
-
-	if (mode != DRM_MODE_DPMS_ON)
-		drm_panel_disable(imxpd->panel);
-	else
-		drm_panel_enable(imxpd->panel);
-}
-
-static void imx_pd_encoder_commit(struct drm_encoder *encoder)
+static void imx_pd_encoder_enable(struct drm_encoder *encoder)
 {
 	struct imx_drm_encoder *imx_encoder = enc_to_imx_enc(encoder);
 	struct imx_parallel_display *imxpd = imx_enc_to_imxpd(imx_encoder);
@@ -128,7 +117,7 @@ static void imx_pd_encoder_disable(struct drm_encoder *encoder)
 }
 
 static const struct drm_connector_funcs imx_pd_connector_funcs = {
-	.dpms = drm_helper_connector_dpms,
+	.dpms = drm_atomic_helper_connector_dpms,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.detect = imx_pd_connector_detect,
 	.destroy = imx_drm_connector_destroy,
@@ -147,9 +136,8 @@ static const struct drm_encoder_funcs imx_pd_encoder_funcs = {
 };
 
 static const struct drm_encoder_helper_funcs imx_pd_encoder_helper_funcs = {
-	.dpms = imx_pd_encoder_dpms,
-	.commit = imx_pd_encoder_commit,
 	.mode_set = imx_pd_encoder_mode_set,
+	.enable = imx_pd_encoder_enable,
 	.disable = imx_pd_encoder_disable,
 };