Split the output routing specification between SoC-internal data,
specified in the rcar_du_device_info structure, and board data, passed
through platform data.
The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). SoC-internal
output routing data specify which output are valid, which CRTCs can be
connected to the valid outputs, and the type of in-SoC encoder for the
output.
Platform data then specifies external encoders and the output they are
connected to.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 6 ++++--
drivers/gpu/drm/rcar-du/rcar_du_crtc.h | 4 +++-
drivers/gpu/drm/rcar-du/rcar_du_drv.c | 30 ++++++++++++++++++++++++++++++
drivers/gpu/drm/rcar-du/rcar_du_drv.h | 16 ++++++++++++++++
drivers/gpu/drm/rcar-du/rcar_du_encoder.c | 26 +++++++++++++++++++++-----
drivers/gpu/drm/rcar-du/rcar_du_encoder.h | 5 +++--
drivers/gpu/drm/rcar-du/rcar_du_group.c | 8 ++++----
drivers/gpu/drm/rcar-du/rcar_du_kms.c | 17 +++++++++++------
include/linux/platform_data/rcar-du.h | 17 +++++++++++++++--
9 files changed, 107 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index a340224..680606e 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -129,14 +129,16 @@ static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc)
rcar_du_crtc_write(rcrtc, DEWR, mode->hdisplay);
}
-void rcar_du_crtc_route_output(struct drm_crtc *crtc, unsigned int output)
+void rcar_du_crtc_route_output(struct drm_crtc *crtc,
+ enum rcar_du_output output)
{
struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
+ struct rcar_du_device *rcdu = rcrtc->group->dev;
/* Store the route from the CRTC output to the DU output. The DU will be
* configured when starting the CRTC.
*/
- rcrtc->outputs |= 1 << output;
+ rcrtc->outputs |= BIT(output);
}
void rcar_du_crtc_update_planes(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
index 542a7fe..39a983d 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
@@ -15,6 +15,7 @@
#define __RCAR_DU_CRTC_H__
#include <linux/mutex.h>
+#include <linux/platform_data/rcar-du.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
@@ -45,7 +46,8 @@ void rcar_du_crtc_cancel_page_flip(struct rcar_du_crtc *rcrtc,
void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc);
void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc);
-void rcar_du_crtc_route_output(struct drm_crtc *crtc, unsigned int output);
+void rcar_du_crtc_route_output(struct drm_crtc *crtc,
+ enum rcar_du_output output);
void rcar_du_crtc_update_planes(struct drm_crtc *crtc);
#endif /* __RCAR_DU_CRTC_H__ */
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index dd1950d..28654e7 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -214,12 +214,42 @@ static int rcar_du_remove(struct platform_device *pdev)
static const struct rcar_du_device_info rcar_du_r8a7779_info = {
.features = 0,
.num_crtcs = 2,
+ .routes = {
+ /* R8A7779 has two RGB outputs and one (currently unsupported)
+ * TCON output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(0),
+ .encoder_type = DRM_MODE_ENCODER_NONE,
+ },
+ [RCAR_DU_OUTPUT_DPAD1] = {
+ .possible_crtcs = BIT(1) | BIT(0),
+ .encoder_type = DRM_MODE_ENCODER_NONE,
+ },
+ },
};
static const struct rcar_du_device_info rcar_du_r8a7790_info = {
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_ALIGN_128B
| RCAR_DU_FEATURE_DEFR8,
.num_crtcs = 3,
+ .routes = {
+ /* R8A7790 has one RGB output, two LVDS outputs and one
+ * (currently unsupported) TCON output.
+ */
+ [RCAR_DU_OUTPUT_DPAD0] = {
+ .possible_crtcs = BIT(2) | BIT(1) | BIT(0),
+ .encoder_type = DRM_MODE_ENCODER_NONE,
+ },
+ [RCAR_DU_OUTPUT_LVDS0] = {
+ .possible_crtcs = BIT(0),
+ .encoder_type = DRM_MODE_ENCODER_LVDS,
+ },
+ [RCAR_DU_OUTPUT_LVDS1] = {
+ .possible_crtcs = BIT(2) | BIT(1),
+ .encoder_type = DRM_MODE_ENCODER_LVDS,
+ },
+ },
};
static const struct platform_device_id rcar_du_id_table[] = {
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index 70c335f..d5243f4 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -30,13 +30,29 @@ struct rcar_du_device;
#define RCAR_DU_FEATURE_DEFR8 (1 << 2) /* Has DEFR8 register */
/*
+ * struct rcar_du_output_routing - Output routing specification
+ * @possible_crtcs: bitmask of possible CRTCs for the output
+ * @encoder_type: DRM type of the internal encoder associated with the output
+ *
+ * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
+ * specify the valid SoC outputs, which CRTCs can drive the output, and the type
+ * of in-SoC encoder for the output.
+ */
+struct rcar_du_output_routing {
+ unsigned int possible_crtcs;
+ unsigned int encoder_type;
+};
+
+/*
* struct rcar_du_device_info - DU model-specific information
* @features: device features (RCAR_DU_FEATURE_*)
* @num_crtcs: total number of CRTCs
+ * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
*/
struct rcar_du_device_info {
unsigned int features;
unsigned int num_crtcs;
+ struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
};
struct rcar_du_device {
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c b/drivers/gpu/drm/rcar-du/rcar_du_encoder.c
index 0d0375c..2aac28d 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_encoder.c
@@ -115,10 +115,12 @@ static const struct drm_encoder_funcs encoder_funcs = {
};
int rcar_du_encoder_init(struct rcar_du_device *rcdu,
- enum rcar_du_encoder_type type, unsigned int output,
+ enum rcar_du_encoder_type type,
+ enum rcar_du_output output,
const struct rcar_du_encoder_data *data)
{
struct rcar_du_encoder *renc;
+ unsigned int encoder_type;
int ret;
renc = devm_kzalloc(rcdu->dev, sizeof(*renc), GFP_KERNEL);
@@ -127,19 +129,33 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu,
renc->output = output;
+ switch (type) {
+ case RCAR_DU_ENCODER_VGA:
+ encoder_type = DRM_MODE_ENCODER_DAC;
+ break;
+ case RCAR_DU_ENCODER_LVDS:
+ encoder_type = DRM_MODE_ENCODER_LVDS;
+ break;
+ case RCAR_DU_ENCODER_NONE:
+ default:
+ /* No external encoder, use the internal encoder type. */
+ encoder_type = rcdu->info->routes[output].encoder_type;
+ break;
+ }
+
ret = drm_encoder_init(rcdu->ddev, &renc->encoder, &encoder_funcs,
- type);
+ encoder_type);
if (ret < 0)
return ret;
drm_encoder_helper_add(&renc->encoder, &encoder_helper_funcs);
- switch (type) {
- case RCAR_DU_ENCODER_LVDS:
+ switch (encoder_type) {
+ case DRM_MODE_ENCODER_LVDS:
return rcar_du_lvds_connector_init(rcdu, renc,
&data->connector.lvds.panel);
- case RCAR_DU_ENCODER_VGA:
+ case DRM_MODE_ENCODER_DAC:
return rcar_du_vga_connector_init(rcdu, renc);
default:
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_encoder.h b/drivers/gpu/drm/rcar-du/rcar_du_encoder.h
index 08cde12..2310416 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_encoder.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_encoder.h
@@ -22,7 +22,7 @@ struct rcar_du_device;
struct rcar_du_encoder {
struct drm_encoder encoder;
- unsigned int output;
+ enum rcar_du_output output;
};
#define to_rcar_encoder(e) \
@@ -40,7 +40,8 @@ struct drm_encoder *
rcar_du_connector_best_encoder(struct drm_connector *connector);
int rcar_du_encoder_init(struct rcar_du_device *rcdu,
- enum rcar_du_encoder_type type, unsigned int output,
+ enum rcar_du_encoder_type type,
+ enum rcar_du_output output,
const struct rcar_du_encoder_data *data);
#endif /* __RCAR_DU_ENCODER_H__ */
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.c b/drivers/gpu/drm/rcar-du/rcar_du_group.c
index f3ba0ca..9df6fb6 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_group.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_group.c
@@ -135,11 +135,11 @@ void rcar_du_group_set_routing(struct rcar_du_group *rgrp)
dorcr &= ~(DORCR_PG2T | DORCR_DK2S | DORCR_PG2D_MASK);
- /* Set the DU1 pins sources. Select CRTC 0 if explicitly requested and
- * CRTC 1 in all other cases to avoid cloning CRTC 0 to DU0 and DU1 by
- * default.
+ /* Set the DPAD1 pins sources. Select CRTC 0 if explicitly requested and
+ * CRTC 1 in all other cases to avoid cloning CRTC 0 to DPAD0 and DPAD1
+ * by default.
*/
- if (crtc0->outputs & (1 << 1))
+ if (crtc0->outputs & BIT(RCAR_DU_OUTPUT_DPAD1))
dorcr |= DORCR_PG2D_DS1;
else
dorcr |= DORCR_PG2T | DORCR_DK2S | DORCR_PG2D_DS2;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index 816963c..2b92e68 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -220,11 +220,14 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
for (i = 0; i < rcdu->pdata->num_encoders; ++i) {
const struct rcar_du_encoder_data *pdata =
&rcdu->pdata->encoders[i];
+ const struct rcar_du_output_routing *route =
+ &rcdu->info->routes[pdata->output];
if (pdata->type == RCAR_DU_ENCODER_UNUSED)
continue;
- if (pdata->output >= rcdu->num_crtcs) {
+ if (pdata->output >= RCAR_DU_OUTPUT_MAX ||
+ route->possible_crtcs == 0) {
dev_warn(rcdu->dev,
"encoder %u references unexisting output %u, skipping\n",
i, pdata->output);
@@ -234,15 +237,17 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
rcar_du_encoder_init(rcdu, pdata->type, pdata->output, pdata);
}
- /* Set the possible CRTCs and possible clones. All encoders can be
- * driven by the CRTC associated with the output they're connected to,
- * as well as by CRTC 0.
+ /* Set the possible CRTCs and possible clones. There's always at least
+ * one way for all encoders to clone each other, set all bits in the
+ * possible clones field.
*/
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
struct rcar_du_encoder *renc = to_rcar_encoder(encoder);
+ const struct rcar_du_output_routing *route =
+ &rcdu->info->routes[renc->output];
- encoder->possible_crtcs = (1 << 0) | (1 << renc->output);
- encoder->possible_clones = 1 << 0;
+ encoder->possible_crtcs = route->possible_crtcs;
+ encoder->possible_clones = (1 << rcdu->pdata->num_encoders) - 1;
}
/* Now that the CRTCs have been initialized register the planes. */
diff --git a/include/linux/platform_data/rcar-du.h b/include/linux/platform_data/rcar-du.h
index 64cd863..1a2e990 100644
--- a/include/linux/platform_data/rcar-du.h
+++ b/include/linux/platform_data/rcar-du.h
@@ -16,8 +16,18 @@
#include <drm/drm_mode.h>
+enum rcar_du_output {
+ RCAR_DU_OUTPUT_DPAD0,
+ RCAR_DU_OUTPUT_DPAD1,
+ RCAR_DU_OUTPUT_LVDS0,
+ RCAR_DU_OUTPUT_LVDS1,
+ RCAR_DU_OUTPUT_TCON,
+ RCAR_DU_OUTPUT_MAX,
+};
+
enum rcar_du_encoder_type {
RCAR_DU_ENCODER_UNUSED = 0,
+ RCAR_DU_ENCODER_NONE,
RCAR_DU_ENCODER_VGA,
RCAR_DU_ENCODER_LVDS,
};
@@ -39,13 +49,16 @@ struct rcar_du_connector_vga_data {
/*
* struct rcar_du_encoder_data - Encoder platform data
* @type: the encoder type (RCAR_DU_ENCODER_*)
- * @output: the DU output the connector is connected to
+ * @output: the DU output the connector is connected to (RCAR_DU_OUTPUT_*)
* @connector.lvds: platform data for LVDS connectors
* @connector.vga: platform data for VGA connectors
+ *
+ * Encoder platform data describes an on-board encoder, its associated DU SoC
+ * output, and the connector.
*/
struct rcar_du_encoder_data {
enum rcar_du_encoder_type type;
- unsigned int output;
+ enum rcar_du_output output;
union {
struct rcar_du_connector_lvds_data lvds;
--
1.8.1.5
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