From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
To: dri-devel@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org,
Andrzej Hajda <a.hajda@samsung.com>,
Jernej Skrabec <jernej.skrabec@siol.net>,
Jonas Karlman <jonas@kwiboo.se>,
Neil Armstrong <narmstrong@baylibre.com>,
Sam Ravnborg <sam@ravnborg.org>,
Kieran Bingham <kieran.bingham@ideasonboard.com>
Subject: [PATCH 08/27] drm: rcar-du: lvds: Convert to DRM panel bridge helper
Date: Tue, 26 May 2020 04:14:46 +0300 [thread overview]
Message-ID: <20200526011505.31884-9-laurent.pinchart+renesas@ideasonboard.com> (raw)
In-Reply-To: <20200526011505.31884-1-laurent.pinchart+renesas@ideasonboard.com>
Replace the manual panel handling with usage of the DRM panel bridge
helper. This simplifies the driver, and brings support for
DRM_BRIDGE_ATTACH_NO_CONNECTOR as an added bonus.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
drivers/gpu/drm/rcar-du/rcar_lvds.c | 124 +++-------------------------
1 file changed, 12 insertions(+), 112 deletions(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c
index ab0d49618cf9..9404f12813d1 100644
--- a/drivers/gpu/drm/rcar-du/rcar_lvds.c
+++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c
@@ -63,7 +63,6 @@ struct rcar_lvds {
struct drm_bridge bridge;
struct drm_bridge *next_bridge;
- struct drm_connector connector;
struct drm_panel *panel;
void __iomem *mmio;
@@ -80,73 +79,11 @@ struct rcar_lvds {
#define bridge_to_rcar_lvds(b) \
container_of(b, struct rcar_lvds, bridge)
-#define connector_to_rcar_lvds(c) \
- container_of(c, struct rcar_lvds, connector)
-
static void rcar_lvds_write(struct rcar_lvds *lvds, u32 reg, u32 data)
{
iowrite32(data, lvds->mmio + reg);
}
-/* -----------------------------------------------------------------------------
- * Connector & Panel
- */
-
-static int rcar_lvds_connector_get_modes(struct drm_connector *connector)
-{
- struct rcar_lvds *lvds = connector_to_rcar_lvds(connector);
-
- return drm_panel_get_modes(lvds->panel, connector);
-}
-
-static int rcar_lvds_connector_atomic_check(struct drm_connector *connector,
- struct drm_atomic_state *state)
-{
- struct rcar_lvds *lvds = connector_to_rcar_lvds(connector);
- const struct drm_display_mode *panel_mode;
- struct drm_connector_state *conn_state;
- struct drm_crtc_state *crtc_state;
-
- conn_state = drm_atomic_get_new_connector_state(state, connector);
- if (!conn_state->crtc)
- return 0;
-
- if (list_empty(&connector->modes)) {
- dev_dbg(lvds->dev, "connector: empty modes list\n");
- return -EINVAL;
- }
-
- panel_mode = list_first_entry(&connector->modes,
- struct drm_display_mode, head);
-
- /* We're not allowed to modify the resolution. */
- crtc_state = drm_atomic_get_crtc_state(state, conn_state->crtc);
- if (IS_ERR(crtc_state))
- return PTR_ERR(crtc_state);
-
- if (crtc_state->mode.hdisplay != panel_mode->hdisplay ||
- crtc_state->mode.vdisplay != panel_mode->vdisplay)
- return -EINVAL;
-
- /* The flat panel mode is fixed, just copy it to the adjusted mode. */
- drm_mode_copy(&crtc_state->adjusted_mode, panel_mode);
-
- return 0;
-}
-
-static const struct drm_connector_helper_funcs rcar_lvds_conn_helper_funcs = {
- .get_modes = rcar_lvds_connector_get_modes,
- .atomic_check = rcar_lvds_connector_atomic_check,
-};
-
-static const struct drm_connector_funcs rcar_lvds_conn_funcs = {
- .reset = drm_atomic_helper_connector_reset,
- .fill_modes = drm_helper_probe_single_connector_modes,
- .destroy = drm_connector_cleanup,
- .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
/* -----------------------------------------------------------------------------
* PLL Setup
*/
@@ -583,11 +520,6 @@ static void __rcar_lvds_atomic_enable(struct drm_bridge *bridge,
/* Turn the output on. */
lvdcr0 |= LVDCR0_LVRES;
rcar_lvds_write(lvds, LVDCR0, lvdcr0);
-
- if (lvds->panel) {
- drm_panel_prepare(lvds->panel);
- drm_panel_enable(lvds->panel);
- }
}
static void rcar_lvds_atomic_enable(struct drm_bridge *bridge,
@@ -609,11 +541,6 @@ static void rcar_lvds_atomic_disable(struct drm_bridge *bridge,
{
struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
- if (lvds->panel) {
- drm_panel_disable(lvds->panel);
- drm_panel_unprepare(lvds->panel);
- }
-
rcar_lvds_write(lvds, LVDCR0, 0);
rcar_lvds_write(lvds, LVDCR1, 0);
rcar_lvds_write(lvds, LVDPLLCR, 0);
@@ -648,49 +575,13 @@ static int rcar_lvds_attach(struct drm_bridge *bridge,
enum drm_bridge_attach_flags flags)
{
struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
- struct drm_connector *connector = &lvds->connector;
- struct drm_encoder *encoder = bridge->encoder;
- int ret;
- /* If we have a next bridge just attach it. */
- if (lvds->next_bridge)
- return drm_bridge_attach(bridge->encoder, lvds->next_bridge,
- bridge, flags);
-
- if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) {
- DRM_ERROR("Fix bridge driver to make connector optional!");
- return -EINVAL;
- }
-
- /* Otherwise if we have a panel, create a connector. */
- if (!lvds->panel)
- return 0;
-
- ret = drm_connector_init(bridge->dev, connector, &rcar_lvds_conn_funcs,
- DRM_MODE_CONNECTOR_LVDS);
- if (ret < 0)
- return ret;
-
- drm_connector_helper_add(connector, &rcar_lvds_conn_helper_funcs);
-
- ret = drm_connector_attach_encoder(connector, encoder);
- if (ret < 0)
- return ret;
-
- return drm_panel_attach(lvds->panel, connector);
-}
-
-static void rcar_lvds_detach(struct drm_bridge *bridge)
-{
- struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
-
- if (lvds->panel)
- drm_panel_detach(lvds->panel);
+ return drm_bridge_attach(bridge->encoder, lvds->next_bridge, bridge,
+ flags);
}
static const struct drm_bridge_funcs rcar_lvds_bridge_ops = {
.attach = rcar_lvds_attach,
- .detach = rcar_lvds_detach,
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
.atomic_reset = drm_atomic_helper_bridge_reset,
@@ -763,7 +654,7 @@ static int rcar_lvds_parse_dt_companion(struct rcar_lvds *lvds)
* that we are expected to generate even pixels from the primary
* encoder, and odd pixels from the companion encoder.
*/
- if (lvds->next_bridge && lvds->next_bridge->timings &&
+ if (lvds->next_bridge->timings &&
lvds->next_bridge->timings->dual_link)
lvds->link_type = RCAR_LVDS_DUAL_LINK_EVEN_ODD_PIXELS;
else
@@ -815,6 +706,15 @@ static int rcar_lvds_parse_dt(struct rcar_lvds *lvds)
if (ret)
goto done;
+ if (lvds->panel) {
+ lvds->next_bridge = devm_drm_panel_bridge_add(lvds->dev,
+ lvds->panel);
+ if (IS_ERR_OR_NULL(lvds->next_bridge)) {
+ ret = -EINVAL;
+ goto done;
+ }
+ }
+
if (lvds->info->quirks & RCAR_LVDS_QUIRK_DUAL_LINK)
ret = rcar_lvds_parse_dt_companion(lvds);
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2020-05-26 1:15 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-26 1:14 [PATCH 00/27] Converter R-Car DU to the DRM bridge connector helper Laurent Pinchart
2020-05-26 1:14 ` [PATCH 01/27] drm: bridge: adv7511: Split EDID read to a separate function Laurent Pinchart
2020-05-26 1:14 ` [PATCH 02/27] drm: bridge: adv7511: Split connector creation " Laurent Pinchart
2020-05-26 1:14 ` [PATCH 03/27] drm: bridge: adv7511: Implement bridge connector operations Laurent Pinchart
2020-06-21 8:25 ` Sam Ravnborg
2020-05-26 1:14 ` [PATCH 04/27] drm: bridge: adv7511: Make connector creation optional Laurent Pinchart
2020-05-26 1:14 ` [PATCH 05/27] drm: bridge: Return NULL on error from drm_bridge_get_edid() Laurent Pinchart
2020-06-21 8:26 ` Sam Ravnborg
2020-05-26 1:14 ` [PATCH 06/27] drm: bridge: simple-bridge: Delegate operations to next bridge Laurent Pinchart
2020-05-26 1:14 ` [PATCH 07/27] drm: bridge: simple-bridge: Make connector creation optional Laurent Pinchart
2020-05-26 1:14 ` Laurent Pinchart [this message]
2020-05-26 1:14 ` [PATCH 09/27] drm: edid: Constify connector argument to infoframe functions Laurent Pinchart
2020-06-21 8:27 ` Sam Ravnborg
2020-05-26 1:14 ` [PATCH 10/27] drm: bridge: Pass drm_display_info to drm_bridge_funcs .mode_valid() Laurent Pinchart
2020-05-26 12:51 ` Neil Armstrong
2020-05-26 12:59 ` Boris Brezillon
2020-05-26 14:05 ` Guido Günther
2020-05-26 1:14 ` [PATCH 11/27] drm: bridge: dw-hdmi: Pass private data pointer to .mode_valid() Laurent Pinchart
2020-05-26 9:44 ` Neil Armstrong
2020-05-26 1:14 ` [PATCH 12/27] drm: bridge: dw-hdmi: Pass private data pointer to .configure_phy() Laurent Pinchart
2020-05-26 9:45 ` Neil Armstrong
2020-05-26 1:14 ` [PATCH 13/27] drm: bridge: dw-hdmi: Remove unused field from dw_hdmi_plat_data Laurent Pinchart
2020-05-26 9:45 ` Neil Armstrong
2020-05-26 1:14 ` [PATCH 14/27] drm: meson: dw-hdmi: Use dw_hdmi context to replace hack Laurent Pinchart
2020-05-26 12:32 ` Neil Armstrong
2020-05-26 1:14 ` [PATCH 15/27] drm: bridge: dw-hdmi: Pass drm_display_info to .mode_valid() Laurent Pinchart
2020-05-26 9:46 ` Neil Armstrong
2020-05-26 1:14 ` [PATCH 16/27] drm: bridge: dw-hdmi: Constify mode argument to dw_hdmi_phy_ops .init() Laurent Pinchart
2020-05-26 9:46 ` Neil Armstrong
2020-05-26 1:14 ` [PATCH 17/27] drm: bridge: dw-hdmi: Constify mode argument to internal functions Laurent Pinchart
2020-05-26 9:46 ` Neil Armstrong
2020-05-26 1:14 ` [PATCH 18/27] drm: bridge: dw-hdmi: Pass drm_display_info to dw_hdmi_support_scdc() Laurent Pinchart
2020-05-26 9:48 ` Neil Armstrong
2020-05-26 1:14 ` [PATCH 19/27] drm: bridge: dw-hdmi: Split connector creation to a separate function Laurent Pinchart
2020-05-26 9:49 ` Neil Armstrong
2020-05-26 1:14 ` [PATCH 20/27] drm: bridge: dw-hdmi: Store current connector in struct dw_hdmi Laurent Pinchart
2020-05-26 12:29 ` Neil Armstrong
2020-05-26 1:14 ` [PATCH 21/27] drm: bridge: dw-hdmi: Pass drm_connector to internal functions as needed Laurent Pinchart
2020-05-26 12:29 ` Neil Armstrong
2020-05-26 1:15 ` [PATCH 22/27] drm: bridge: dw-hdmi: Make connector creation optional Laurent Pinchart
2020-05-26 12:35 ` Neil Armstrong
2020-06-07 1:19 ` Laurent Pinchart
2020-05-26 1:15 ` [PATCH 23/27] drm: bridge: dw-hdmi: Attach to next bridge if available Laurent Pinchart
2020-05-26 12:50 ` Neil Armstrong
2020-05-26 14:23 ` Jonas Karlman
2020-06-07 1:24 ` Laurent Pinchart
2020-06-07 1:22 ` Laurent Pinchart
2020-05-26 1:15 ` [PATCH 24/27] drm: rcar-du: dw-hdmi: Set output port number Laurent Pinchart
2020-05-26 1:15 ` [PATCH 25/27] drm: rcar-du: Fix error handling in rcar_du_encoder_init() Laurent Pinchart
2020-05-26 1:15 ` [PATCH 26/27] drm: rcar-du: Use drm_bridge_connector_init() helper Laurent Pinchart
2020-05-26 1:15 ` [PATCH 27/27] drm: Add default modes for connectors in unknown state Laurent Pinchart
2020-06-21 8:40 ` Sam Ravnborg
2020-06-24 1:12 ` Laurent Pinchart
2020-06-24 7:23 ` Daniel Vetter
2020-06-24 15:24 ` Alex Deucher
2020-06-24 19:31 ` Daniel Vetter
2020-06-24 19:40 ` Alex Deucher
2020-06-25 7:56 ` Daniel Vetter
2020-06-25 7:57 ` Daniel Vetter
2020-06-25 10:31 ` Pekka Paalanen
2020-06-25 10:44 ` Daniel Vetter
2020-06-26 8:59 ` Pekka Paalanen
2020-06-26 9:25 ` Daniel Stone
2020-06-26 13:35 ` Daniel Vetter
2020-06-24 22:47 ` Laurent Pinchart
2020-06-23 18:55 ` [PATCH 00/27] Converter R-Car DU to the DRM bridge connector helper Sam Ravnborg
2020-06-25 8:48 ` Liu Ying
2020-06-27 19:55 ` Sam Ravnborg
2020-06-28 8:28 ` Laurent Pinchart
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