lvds-encoder.c implementation is also suitable for LVDS decoders,
not just LVDS encoders.
Instead of creating a new driver for addressing support for
transparent LVDS decoders, repurpose lvds-encoder.c for the greater
good with this patch.
This patch only "rebrands" the lvds-encoder.c driver, to make it
suitable for hosting LVDS decoders support. The actual support for
LVDS decoders will come with a later patch.
Signed-off-by: Fabrizio Castro <fabrizio.cas...@bp.renesas.com>
---
v3->v4:
* The patch now only renames the driver (with related data structures
and build options), changes the description of the module, and
refreshes the copyright
v2->v3:
* No change
v1->v2:
* No change
---
drivers/gpu/drm/bridge/Kconfig | 8 +-
drivers/gpu/drm/bridge/Makefile | 2 +-
.../drm/bridge/{lvds-encoder.c => lvds-codec.c} | 97 +++++++++++-----------
3 files changed, 53 insertions(+), 54 deletions(-)
rename drivers/gpu/drm/bridge/{lvds-encoder.c => lvds-codec.c} (45%)
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 3436297..fbbea46 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -45,14 +45,14 @@ config DRM_DUMB_VGA_DAC
Support for non-programmable RGB to VGA DAC bridges, such as ADI
ADV7123, TI THS8134 and THS8135 or passive resistor ladder DACs.
-config DRM_LVDS_ENCODER
- tristate "Transparent parallel to LVDS encoder support"
+config DRM_LVDS_CODEC
+ tristate "Transparent LVDS encoders and decoders support"
depends on OF
select DRM_KMS_HELPER
select DRM_PANEL_BRIDGE
help
- Support for transparent parallel to LVDS encoders that don't require
- any configuration.
+ Support for transparent LVDS encoders and decoders that don't
+ require any configuration.
config DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW
tristate "MegaChips stdp4028-ge-b850v3-fw and stdp2690-ge-b850v3-fw"
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index 4934fcf..8a9178a 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -2,7 +2,7 @@
obj-$(CONFIG_DRM_ANALOGIX_ANX78XX) += analogix-anx78xx.o
obj-$(CONFIG_DRM_CDNS_DSI) += cdns-dsi.o
obj-$(CONFIG_DRM_DUMB_VGA_DAC) += dumb-vga-dac.o
-obj-$(CONFIG_DRM_LVDS_ENCODER) += lvds-encoder.o
+obj-$(CONFIG_DRM_LVDS_CODEC) += lvds-codec.o
obj-$(CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW) +=
megachips-stdpxxxx-ge-b850v3-fw.o
obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
diff --git a/drivers/gpu/drm/bridge/lvds-encoder.c
b/drivers/gpu/drm/bridge/lvds-codec.c
similarity index 45%
rename from drivers/gpu/drm/bridge/lvds-encoder.c
rename to drivers/gpu/drm/bridge/lvds-codec.c
index e2132a8..b5801a2 100644
--- a/drivers/gpu/drm/bridge/lvds-encoder.c
+++ b/drivers/gpu/drm/bridge/lvds-codec.c
@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
+ * Copyright (C) 2019 Renesas Electronics Corporation
* Copyright (C) 2016 Laurent Pinchart <laurent.pinch...@ideasonboard.com>
*/
@@ -12,65 +13,62 @@
#include <drm/drm_bridge.h>
#include <drm/drm_panel.h>
-struct lvds_encoder {
+struct lvds_codec {
struct drm_bridge bridge;
struct drm_bridge *panel_bridge;
struct gpio_desc *powerdown_gpio;
};
-static int lvds_encoder_attach(struct drm_bridge *bridge)
+static int lvds_codec_attach(struct drm_bridge *bridge)
{
- struct lvds_encoder *lvds_encoder = container_of(bridge,
- struct lvds_encoder,
- bridge);
+ struct lvds_codec *lvds_codec = container_of(bridge,
+ struct lvds_codec, bridge);
- return drm_bridge_attach(bridge->encoder, lvds_encoder->panel_bridge,
+ return drm_bridge_attach(bridge->encoder, lvds_codec->panel_bridge,
bridge);
}
-static void lvds_encoder_enable(struct drm_bridge *bridge)
+static void lvds_codec_enable(struct drm_bridge *bridge)
{
- struct lvds_encoder *lvds_encoder = container_of(bridge,
- struct lvds_encoder,
- bridge);
+ struct lvds_codec *lvds_codec = container_of(bridge,
+ struct lvds_codec, bridge);
- if (lvds_encoder->powerdown_gpio)
- gpiod_set_value_cansleep(lvds_encoder->powerdown_gpio, 0);
+ if (lvds_codec->powerdown_gpio)
+ gpiod_set_value_cansleep(lvds_codec->powerdown_gpio, 0);
}
-static void lvds_encoder_disable(struct drm_bridge *bridge)
+static void lvds_codec_disable(struct drm_bridge *bridge)
{
- struct lvds_encoder *lvds_encoder = container_of(bridge,
- struct lvds_encoder,
- bridge);
+ struct lvds_codec *lvds_codec = container_of(bridge,
+ struct lvds_codec, bridge);
- if (lvds_encoder->powerdown_gpio)
- gpiod_set_value_cansleep(lvds_encoder->powerdown_gpio, 1);
+ if (lvds_codec->powerdown_gpio)
+ gpiod_set_value_cansleep(lvds_codec->powerdown_gpio, 1);
}
static struct drm_bridge_funcs funcs = {
- .attach = lvds_encoder_attach,
- .enable = lvds_encoder_enable,
- .disable = lvds_encoder_disable,
+ .attach = lvds_codec_attach,
+ .enable = lvds_codec_enable,
+ .disable = lvds_codec_disable,
};
-static int lvds_encoder_probe(struct platform_device *pdev)
+static int lvds_codec_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *port;
struct device_node *endpoint;
struct device_node *panel_node;
struct drm_panel *panel;
- struct lvds_encoder *lvds_encoder;
+ struct lvds_codec *lvds_codec;
- lvds_encoder = devm_kzalloc(dev, sizeof(*lvds_encoder), GFP_KERNEL);
- if (!lvds_encoder)
+ lvds_codec = devm_kzalloc(dev, sizeof(*lvds_codec), GFP_KERNEL);
+ if (!lvds_codec)
return -ENOMEM;
- lvds_encoder->powerdown_gpio = devm_gpiod_get_optional(dev, "powerdown",
- GPIOD_OUT_HIGH);
- if (IS_ERR(lvds_encoder->powerdown_gpio)) {
- int err = PTR_ERR(lvds_encoder->powerdown_gpio);
+ lvds_codec->powerdown_gpio = devm_gpiod_get_optional(dev, "powerdown",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(lvds_codec->powerdown_gpio)) {
+ int err = PTR_ERR(lvds_codec->powerdown_gpio);
if (err != -EPROBE_DEFER)
dev_err(dev, "powerdown GPIO failure: %d\n", err);
@@ -105,51 +103,52 @@ static int lvds_encoder_probe(struct platform_device
*pdev)
return PTR_ERR(panel);
}
- lvds_encoder->panel_bridge =
+ lvds_codec->panel_bridge =
devm_drm_panel_bridge_add_typed(dev, panel,
DRM_MODE_CONNECTOR_LVDS);
- if (IS_ERR(lvds_encoder->panel_bridge))
- return PTR_ERR(lvds_encoder->panel_bridge);
+ if (IS_ERR(lvds_codec->panel_bridge))
+ return PTR_ERR(lvds_codec->panel_bridge);
- /* The panel_bridge bridge is attached to the panel's of_node,
+ /*
+ * The panel_bridge bridge is attached to the panel's of_node,
* but we need a bridge attached to our of_node for our user
* to look up.
*/
- lvds_encoder->bridge.of_node = dev->of_node;
- lvds_encoder->bridge.funcs = &funcs;
- drm_bridge_add(&lvds_encoder->bridge);
+ lvds_codec->bridge.of_node = dev->of_node;
+ lvds_codec->bridge.funcs = &funcs;
+ drm_bridge_add(&lvds_codec->bridge);
- platform_set_drvdata(pdev, lvds_encoder);
+ platform_set_drvdata(pdev, lvds_codec);
return 0;
}
-static int lvds_encoder_remove(struct platform_device *pdev)
+static int lvds_codec_remove(struct platform_device *pdev)
{
- struct lvds_encoder *lvds_encoder = platform_get_drvdata(pdev);
+ struct lvds_codec *lvds_codec = platform_get_drvdata(pdev);
- drm_bridge_remove(&lvds_encoder->bridge);
+ drm_bridge_remove(&lvds_codec->bridge);
return 0;
}
-static const struct of_device_id lvds_encoder_match[] = {
+static const struct of_device_id lvds_codec_match[] = {
{ .compatible = "lvds-encoder" },
{ .compatible = "thine,thc63lvdm83d" },
{},
};
-MODULE_DEVICE_TABLE(of, lvds_encoder_match);
+MODULE_DEVICE_TABLE(of, lvds_codec_match);
-static struct platform_driver lvds_encoder_driver = {
- .probe = lvds_encoder_probe,
- .remove = lvds_encoder_remove,
+static struct platform_driver lvds_codec_driver = {
+ .probe = lvds_codec_probe,
+ .remove = lvds_codec_remove,
.driver = {
- .name = "lvds-encoder",
- .of_match_table = lvds_encoder_match,
+ .name = "lvds-codec",
+ .of_match_table = lvds_codec_match,
},
};
-module_platform_driver(lvds_encoder_driver);
+module_platform_driver(lvds_codec_driver);
MODULE_AUTHOR("Laurent Pinchart <laurent.pinch...@ideasonboard.com>");
-MODULE_DESCRIPTION("Transparent parallel to LVDS encoder");
+MODULE_DESCRIPTION("LVDS encoders and decoders");
MODULE_LICENSE("GPL");
--
2.7.4
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