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Message-Id: <20230603170747.1753842-1-masahiroy@kernel.org>
Date: Sun, 4 Jun 2023 02:07:46 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong <neil.armstrong@...aro.org>,
Robert Foss <rfoss@...nel.org>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
Jonas Karlman <jonas@...boo.se>,
Jernej Skrabec <jernej.skrabec@...il.com>
Cc: linux-kernel@...r.kernel.org,
Masahiro Yamada <masahiroy@...nel.org>,
Daniel Vetter <daniel@...ll.ch>,
David Airlie <airlied@...il.com>,
Fabio Estevam <festevam@...il.com>,
Liu Ying <victor.liu@....com>,
NXP Linux Team <linux-imx@....com>,
Nick Terrell <terrelln@...com>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Sascha Hauer <s.hauer@...gutronix.de>,
Shawn Guo <shawnguo@...nel.org>,
dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 1/2] drm/bridge: imx: fix mixed module-builtin object
With CONFIG_DRM_IMX8QM_LDB=m and CONFIG_DRM_IMX8QXP_LDB=y (or vice
versa), imx-ldb-helper.o is linked to a module and also to vmlinux
even though the expected CFLAGS are different between builtins and
modules.
This is the same situation as fixed by commit 637a642f5ca5 ("zstd:
Fixing mixed module-builtin objects").
Turn helpers in imx-ldb-helper.c into inline functions.
Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---
drivers/gpu/drm/bridge/imx/Makefile | 4 +-
drivers/gpu/drm/bridge/imx/imx-ldb-helper.c | 221 --------------------
drivers/gpu/drm/bridge/imx/imx-ldb-helper.h | 213 +++++++++++++++++--
3 files changed, 197 insertions(+), 241 deletions(-)
delete mode 100644 drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
diff --git a/drivers/gpu/drm/bridge/imx/Makefile b/drivers/gpu/drm/bridge/imx/Makefile
index aa90ec8d5433..64b93009376a 100644
--- a/drivers/gpu/drm/bridge/imx/Makefile
+++ b/drivers/gpu/drm/bridge/imx/Makefile
@@ -1,7 +1,7 @@
-imx8qm-ldb-objs := imx-ldb-helper.o imx8qm-ldb-drv.o
+imx8qm-ldb-objs := imx8qm-ldb-drv.o
obj-$(CONFIG_DRM_IMX8QM_LDB) += imx8qm-ldb.o
-imx8qxp-ldb-objs := imx-ldb-helper.o imx8qxp-ldb-drv.o
+imx8qxp-ldb-objs := imx8qxp-ldb-drv.o
obj-$(CONFIG_DRM_IMX8QXP_LDB) += imx8qxp-ldb.o
obj-$(CONFIG_DRM_IMX8QXP_PIXEL_COMBINER) += imx8qxp-pixel-combiner.o
diff --git a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
deleted file mode 100644
index 7338b84bc83d..000000000000
--- a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
+++ /dev/null
@@ -1,221 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2012 Sascha Hauer, Pengutronix
- * Copyright 2019,2020,2022 NXP
- */
-
-#include <linux/media-bus-format.h>
-#include <linux/mfd/syscon.h>
-#include <linux/of.h>
-#include <linux/regmap.h>
-
-#include <drm/drm_bridge.h>
-#include <drm/drm_of.h>
-#include <drm/drm_print.h>
-
-#include "imx-ldb-helper.h"
-
-bool ldb_channel_is_single_link(struct ldb_channel *ldb_ch)
-{
- return ldb_ch->link_type == LDB_CH_SINGLE_LINK;
-}
-
-bool ldb_channel_is_split_link(struct ldb_channel *ldb_ch)
-{
- return ldb_ch->link_type == LDB_CH_DUAL_LINK_EVEN_ODD_PIXELS ||
- ldb_ch->link_type == LDB_CH_DUAL_LINK_ODD_EVEN_PIXELS;
-}
-
-int ldb_bridge_atomic_check_helper(struct drm_bridge *bridge,
- struct drm_bridge_state *bridge_state,
- struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state)
-{
- struct ldb_channel *ldb_ch = bridge->driver_private;
-
- ldb_ch->in_bus_format = bridge_state->input_bus_cfg.format;
- ldb_ch->out_bus_format = bridge_state->output_bus_cfg.format;
-
- return 0;
-}
-
-void ldb_bridge_mode_set_helper(struct drm_bridge *bridge,
- const struct drm_display_mode *mode,
- const struct drm_display_mode *adjusted_mode)
-{
- struct ldb_channel *ldb_ch = bridge->driver_private;
- struct ldb *ldb = ldb_ch->ldb;
- bool is_split = ldb_channel_is_split_link(ldb_ch);
-
- if (is_split)
- ldb->ldb_ctrl |= LDB_SPLIT_MODE_EN;
-
- switch (ldb_ch->out_bus_format) {
- case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
- break;
- case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG:
- if (ldb_ch->chno == 0 || is_split)
- ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24;
- if (ldb_ch->chno == 1 || is_split)
- ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24;
- break;
- case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA:
- if (ldb_ch->chno == 0 || is_split)
- ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24 |
- LDB_BIT_MAP_CH0_JEIDA;
- if (ldb_ch->chno == 1 || is_split)
- ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24 |
- LDB_BIT_MAP_CH1_JEIDA;
- break;
- }
-}
-
-void ldb_bridge_enable_helper(struct drm_bridge *bridge)
-{
- struct ldb_channel *ldb_ch = bridge->driver_private;
- struct ldb *ldb = ldb_ch->ldb;
-
- /*
- * Platform specific bridge drivers should set ldb_ctrl properly
- * for the enablement, so just write the ctrl_reg here.
- */
- regmap_write(ldb->regmap, ldb->ctrl_reg, ldb->ldb_ctrl);
-}
-
-void ldb_bridge_disable_helper(struct drm_bridge *bridge)
-{
- struct ldb_channel *ldb_ch = bridge->driver_private;
- struct ldb *ldb = ldb_ch->ldb;
- bool is_split = ldb_channel_is_split_link(ldb_ch);
-
- if (ldb_ch->chno == 0 || is_split)
- ldb->ldb_ctrl &= ~LDB_CH0_MODE_EN_MASK;
- if (ldb_ch->chno == 1 || is_split)
- ldb->ldb_ctrl &= ~LDB_CH1_MODE_EN_MASK;
-
- regmap_write(ldb->regmap, ldb->ctrl_reg, ldb->ldb_ctrl);
-}
-
-int ldb_bridge_attach_helper(struct drm_bridge *bridge,
- enum drm_bridge_attach_flags flags)
-{
- struct ldb_channel *ldb_ch = bridge->driver_private;
- struct ldb *ldb = ldb_ch->ldb;
-
- if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
- DRM_DEV_ERROR(ldb->dev,
- "do not support creating a drm_connector\n");
- return -EINVAL;
- }
-
- if (!bridge->encoder) {
- DRM_DEV_ERROR(ldb->dev, "missing encoder\n");
- return -ENODEV;
- }
-
- return drm_bridge_attach(bridge->encoder,
- ldb_ch->next_bridge, bridge,
- DRM_BRIDGE_ATTACH_NO_CONNECTOR);
-}
-
-int ldb_init_helper(struct ldb *ldb)
-{
- struct device *dev = ldb->dev;
- struct device_node *np = dev->of_node;
- struct device_node *child;
- int ret;
- u32 i;
-
- ldb->regmap = syscon_node_to_regmap(np->parent);
- if (IS_ERR(ldb->regmap)) {
- ret = PTR_ERR(ldb->regmap);
- if (ret != -EPROBE_DEFER)
- DRM_DEV_ERROR(dev, "failed to get regmap: %d\n", ret);
- return ret;
- }
-
- for_each_available_child_of_node(np, child) {
- struct ldb_channel *ldb_ch;
-
- ret = of_property_read_u32(child, "reg", &i);
- if (ret || i > MAX_LDB_CHAN_NUM - 1) {
- ret = -EINVAL;
- DRM_DEV_ERROR(dev,
- "invalid channel node address: %u\n", i);
- of_node_put(child);
- return ret;
- }
-
- ldb_ch = ldb->channel[i];
- ldb_ch->ldb = ldb;
- ldb_ch->chno = i;
- ldb_ch->is_available = true;
- ldb_ch->np = child;
-
- ldb->available_ch_cnt++;
- }
-
- return 0;
-}
-
-int ldb_find_next_bridge_helper(struct ldb *ldb)
-{
- struct device *dev = ldb->dev;
- struct ldb_channel *ldb_ch;
- int ret, i;
-
- for (i = 0; i < MAX_LDB_CHAN_NUM; i++) {
- ldb_ch = ldb->channel[i];
-
- if (!ldb_ch->is_available)
- continue;
-
- ldb_ch->next_bridge = devm_drm_of_get_bridge(dev, ldb_ch->np,
- 1, 0);
- if (IS_ERR(ldb_ch->next_bridge)) {
- ret = PTR_ERR(ldb_ch->next_bridge);
- if (ret != -EPROBE_DEFER)
- DRM_DEV_ERROR(dev,
- "failed to get next bridge: %d\n",
- ret);
- return ret;
- }
- }
-
- return 0;
-}
-
-void ldb_add_bridge_helper(struct ldb *ldb,
- const struct drm_bridge_funcs *bridge_funcs)
-{
- struct ldb_channel *ldb_ch;
- int i;
-
- for (i = 0; i < MAX_LDB_CHAN_NUM; i++) {
- ldb_ch = ldb->channel[i];
-
- if (!ldb_ch->is_available)
- continue;
-
- ldb_ch->bridge.driver_private = ldb_ch;
- ldb_ch->bridge.funcs = bridge_funcs;
- ldb_ch->bridge.of_node = ldb_ch->np;
-
- drm_bridge_add(&ldb_ch->bridge);
- }
-}
-
-void ldb_remove_bridge_helper(struct ldb *ldb)
-{
- struct ldb_channel *ldb_ch;
- int i;
-
- for (i = 0; i < MAX_LDB_CHAN_NUM; i++) {
- ldb_ch = ldb->channel[i];
-
- if (!ldb_ch->is_available)
- continue;
-
- drm_bridge_remove(&ldb_ch->bridge);
- }
-}
diff --git a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.h b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.h
index a0a5cde27fbc..42e9b4aa8399 100644
--- a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.h
+++ b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.h
@@ -65,32 +65,209 @@ struct ldb {
#define bridge_to_ldb_ch(b) container_of(b, struct ldb_channel, bridge)
-bool ldb_channel_is_single_link(struct ldb_channel *ldb_ch);
-bool ldb_channel_is_split_link(struct ldb_channel *ldb_ch);
+static inline bool ldb_channel_is_single_link(struct ldb_channel *ldb_ch)
+{
+ return ldb_ch->link_type == LDB_CH_SINGLE_LINK;
+}
-int ldb_bridge_atomic_check_helper(struct drm_bridge *bridge,
- struct drm_bridge_state *bridge_state,
- struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state);
+static inline bool ldb_channel_is_split_link(struct ldb_channel *ldb_ch)
+{
+ return ldb_ch->link_type == LDB_CH_DUAL_LINK_EVEN_ODD_PIXELS ||
+ ldb_ch->link_type == LDB_CH_DUAL_LINK_ODD_EVEN_PIXELS;
+}
-void ldb_bridge_mode_set_helper(struct drm_bridge *bridge,
- const struct drm_display_mode *mode,
- const struct drm_display_mode *adjusted_mode);
+static inline int ldb_bridge_atomic_check_helper(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ struct ldb_channel *ldb_ch = bridge->driver_private;
-void ldb_bridge_enable_helper(struct drm_bridge *bridge);
+ ldb_ch->in_bus_format = bridge_state->input_bus_cfg.format;
+ ldb_ch->out_bus_format = bridge_state->output_bus_cfg.format;
-void ldb_bridge_disable_helper(struct drm_bridge *bridge);
+ return 0;
+}
-int ldb_bridge_attach_helper(struct drm_bridge *bridge,
- enum drm_bridge_attach_flags flags);
+static inline void ldb_bridge_mode_set_helper(struct drm_bridge *bridge,
+ const struct drm_display_mode *mode,
+ const struct drm_display_mode *adjusted_mode)
+{
+ struct ldb_channel *ldb_ch = bridge->driver_private;
+ struct ldb *ldb = ldb_ch->ldb;
+ bool is_split = ldb_channel_is_split_link(ldb_ch);
-int ldb_init_helper(struct ldb *ldb);
+ if (is_split)
+ ldb->ldb_ctrl |= LDB_SPLIT_MODE_EN;
-int ldb_find_next_bridge_helper(struct ldb *ldb);
+ switch (ldb_ch->out_bus_format) {
+ case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
+ break;
+ case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG:
+ if (ldb_ch->chno == 0 || is_split)
+ ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24;
+ if (ldb_ch->chno == 1 || is_split)
+ ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24;
+ break;
+ case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA:
+ if (ldb_ch->chno == 0 || is_split)
+ ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24 |
+ LDB_BIT_MAP_CH0_JEIDA;
+ if (ldb_ch->chno == 1 || is_split)
+ ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24 |
+ LDB_BIT_MAP_CH1_JEIDA;
+ break;
+ }
+}
-void ldb_add_bridge_helper(struct ldb *ldb,
- const struct drm_bridge_funcs *bridge_funcs);
+static inline void ldb_bridge_enable_helper(struct drm_bridge *bridge)
+{
+ struct ldb_channel *ldb_ch = bridge->driver_private;
+ struct ldb *ldb = ldb_ch->ldb;
-void ldb_remove_bridge_helper(struct ldb *ldb);
+ /*
+ * Platform specific bridge drivers should set ldb_ctrl properly
+ * for the enablement, so just write the ctrl_reg here.
+ */
+ regmap_write(ldb->regmap, ldb->ctrl_reg, ldb->ldb_ctrl);
+}
+
+static inline void ldb_bridge_disable_helper(struct drm_bridge *bridge)
+{
+ struct ldb_channel *ldb_ch = bridge->driver_private;
+ struct ldb *ldb = ldb_ch->ldb;
+ bool is_split = ldb_channel_is_split_link(ldb_ch);
+
+ if (ldb_ch->chno == 0 || is_split)
+ ldb->ldb_ctrl &= ~LDB_CH0_MODE_EN_MASK;
+ if (ldb_ch->chno == 1 || is_split)
+ ldb->ldb_ctrl &= ~LDB_CH1_MODE_EN_MASK;
+
+ regmap_write(ldb->regmap, ldb->ctrl_reg, ldb->ldb_ctrl);
+}
+
+static inline int ldb_bridge_attach_helper(struct drm_bridge *bridge,
+ enum drm_bridge_attach_flags flags)
+{
+ struct ldb_channel *ldb_ch = bridge->driver_private;
+ struct ldb *ldb = ldb_ch->ldb;
+
+ if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+ DRM_DEV_ERROR(ldb->dev,
+ "do not support creating a drm_connector\n");
+ return -EINVAL;
+ }
+
+ if (!bridge->encoder) {
+ DRM_DEV_ERROR(ldb->dev, "missing encoder\n");
+ return -ENODEV;
+ }
+
+ return drm_bridge_attach(bridge->encoder,
+ ldb_ch->next_bridge, bridge,
+ DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+}
+
+static inline int ldb_init_helper(struct ldb *ldb)
+{
+ struct device *dev = ldb->dev;
+ struct device_node *np = dev->of_node;
+ struct device_node *child;
+ int ret;
+ u32 i;
+
+ ldb->regmap = syscon_node_to_regmap(np->parent);
+ if (IS_ERR(ldb->regmap)) {
+ ret = PTR_ERR(ldb->regmap);
+ if (ret != -EPROBE_DEFER)
+ DRM_DEV_ERROR(dev, "failed to get regmap: %d\n", ret);
+ return ret;
+ }
+
+ for_each_available_child_of_node(np, child) {
+ struct ldb_channel *ldb_ch;
+
+ ret = of_property_read_u32(child, "reg", &i);
+ if (ret || i > MAX_LDB_CHAN_NUM - 1) {
+ ret = -EINVAL;
+ DRM_DEV_ERROR(dev,
+ "invalid channel node address: %u\n", i);
+ of_node_put(child);
+ return ret;
+ }
+
+ ldb_ch = ldb->channel[i];
+ ldb_ch->ldb = ldb;
+ ldb_ch->chno = i;
+ ldb_ch->is_available = true;
+ ldb_ch->np = child;
+
+ ldb->available_ch_cnt++;
+ }
+
+ return 0;
+}
+
+static inline int ldb_find_next_bridge_helper(struct ldb *ldb)
+{
+ struct device *dev = ldb->dev;
+ struct ldb_channel *ldb_ch;
+ int ret, i;
+
+ for (i = 0; i < MAX_LDB_CHAN_NUM; i++) {
+ ldb_ch = ldb->channel[i];
+
+ if (!ldb_ch->is_available)
+ continue;
+
+ ldb_ch->next_bridge = devm_drm_of_get_bridge(dev, ldb_ch->np,
+ 1, 0);
+ if (IS_ERR(ldb_ch->next_bridge)) {
+ ret = PTR_ERR(ldb_ch->next_bridge);
+ if (ret != -EPROBE_DEFER)
+ DRM_DEV_ERROR(dev,
+ "failed to get next bridge: %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static inline void ldb_add_bridge_helper(struct ldb *ldb,
+ const struct drm_bridge_funcs *bridge_funcs)
+{
+ struct ldb_channel *ldb_ch;
+ int i;
+
+ for (i = 0; i < MAX_LDB_CHAN_NUM; i++) {
+ ldb_ch = ldb->channel[i];
+
+ if (!ldb_ch->is_available)
+ continue;
+
+ ldb_ch->bridge.driver_private = ldb_ch;
+ ldb_ch->bridge.funcs = bridge_funcs;
+ ldb_ch->bridge.of_node = ldb_ch->np;
+
+ drm_bridge_add(&ldb_ch->bridge);
+ }
+}
+
+static inline void ldb_remove_bridge_helper(struct ldb *ldb)
+{
+ struct ldb_channel *ldb_ch;
+ int i;
+
+ for (i = 0; i < MAX_LDB_CHAN_NUM; i++) {
+ ldb_ch = ldb->channel[i];
+
+ if (!ldb_ch->is_available)
+ continue;
+
+ drm_bridge_remove(&ldb_ch->bridge);
+ }
+}
#endif /* __IMX_LDB_HELPER__ */
--
2.39.2
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