[PATCH v3 11/22] drm: mxsfb: Stop using DRM simple display pipeline helper
Laurent Pinchart
laurent.pinchart at ideasonboard.com
Wed Jun 17 16:40:04 UTC 2020
The DRM simple display pipeline helper only supports a single plane. In
order to prepare for support of the alpha plane on i.MX6SX and i.MX7,
move away from the helper. No new feature is added.
Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Reviewed-by: Emil Velikov <emil.l.velikov at gmail.com>
Reviewed-by: Stefan Agner <stefan at agner.ch>
---
Changes since v2:
- Fix primary plane enable check in mxsfb_crtc_atomic_check()
Changes since v1:
- Move after mxsfb_crtc.c rename to mxsfb_kms.c
---
drivers/gpu/drm/mxsfb/mxsfb_drv.c | 108 +++---------------
drivers/gpu/drm/mxsfb/mxsfb_drv.h | 23 ++--
drivers/gpu/drm/mxsfb/mxsfb_kms.c | 184 +++++++++++++++++++++++++++---
3 files changed, 197 insertions(+), 118 deletions(-)
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 522680f84874..f7c89c0b1665 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -10,22 +10,23 @@
#include <linux/clk.h>
#include <linux/dma-mapping.h>
+#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_device.h>
+#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
-#include <linux/spinlock.h>
-#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
-#include <drm/drm_crtc.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_connector.h>
#include <drm/drm_drv.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_irq.h>
+#include <drm/drm_mode_config.h>
#include <drm/drm_of.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>
#include <drm/drm_vblank.h>
#include "mxsfb_drv.h"
@@ -57,17 +58,6 @@ static const struct mxsfb_devdata mxsfb_devdata[] = {
},
};
-static const uint32_t mxsfb_formats[] = {
- DRM_FORMAT_XRGB8888,
- DRM_FORMAT_RGB565
-};
-
-static struct mxsfb_drm_private *
-drm_pipe_to_mxsfb_drm_private(struct drm_simple_display_pipe *pipe)
-{
- return container_of(pipe, struct mxsfb_drm_private, pipe);
-}
-
void mxsfb_enable_axi_clk(struct mxsfb_drm_private *mxsfb)
{
if (mxsfb->clk_axi)
@@ -90,77 +80,6 @@ static const struct drm_mode_config_helper_funcs mxsfb_mode_config_helpers = {
.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
};
-static void mxsfb_pipe_enable(struct drm_simple_display_pipe *pipe,
- struct drm_crtc_state *crtc_state,
- struct drm_plane_state *plane_state)
-{
- struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
- struct drm_device *drm = pipe->plane.dev;
-
- pm_runtime_get_sync(drm->dev);
- mxsfb_crtc_enable(mxsfb);
-}
-
-static void mxsfb_pipe_disable(struct drm_simple_display_pipe *pipe)
-{
- struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
- struct drm_device *drm = pipe->plane.dev;
- struct drm_crtc *crtc = &pipe->crtc;
- struct drm_pending_vblank_event *event;
-
- mxsfb_crtc_disable(mxsfb);
- pm_runtime_put_sync(drm->dev);
-
- spin_lock_irq(&drm->event_lock);
- event = crtc->state->event;
- if (event) {
- crtc->state->event = NULL;
- drm_crtc_send_vblank_event(crtc, event);
- }
- spin_unlock_irq(&drm->event_lock);
-}
-
-static void mxsfb_pipe_update(struct drm_simple_display_pipe *pipe,
- struct drm_plane_state *plane_state)
-{
- struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
-
- mxsfb_plane_atomic_update(mxsfb, plane_state);
-}
-
-static int mxsfb_pipe_enable_vblank(struct drm_simple_display_pipe *pipe)
-{
- struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
-
- /* Clear and enable VBLANK IRQ */
- mxsfb_enable_axi_clk(mxsfb);
- writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
- writel(CTRL1_CUR_FRAME_DONE_IRQ_EN, mxsfb->base + LCDC_CTRL1 + REG_SET);
- mxsfb_disable_axi_clk(mxsfb);
-
- return 0;
-}
-
-static void mxsfb_pipe_disable_vblank(struct drm_simple_display_pipe *pipe)
-{
- struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
-
- /* Disable and clear VBLANK IRQ */
- mxsfb_enable_axi_clk(mxsfb);
- writel(CTRL1_CUR_FRAME_DONE_IRQ_EN, mxsfb->base + LCDC_CTRL1 + REG_CLR);
- writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
- mxsfb_disable_axi_clk(mxsfb);
-}
-
-static struct drm_simple_display_pipe_funcs mxsfb_funcs = {
- .enable = mxsfb_pipe_enable,
- .disable = mxsfb_pipe_disable,
- .update = mxsfb_pipe_update,
- .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
- .enable_vblank = mxsfb_pipe_enable_vblank,
- .disable_vblank = mxsfb_pipe_disable_vblank,
-};
-
static int mxsfb_attach_bridge(struct mxsfb_drm_private *mxsfb)
{
struct drm_device *drm = mxsfb->drm;
@@ -184,7 +103,7 @@ static int mxsfb_attach_bridge(struct mxsfb_drm_private *mxsfb)
if (!bridge)
return -ENODEV;
- ret = drm_simple_display_pipe_attach_bridge(&mxsfb->pipe, bridge);
+ ret = drm_bridge_attach(&mxsfb->encoder, bridge, NULL, 0);
if (ret) {
DRM_DEV_ERROR(drm->dev,
"failed to attach bridge: %d\n", ret);
@@ -251,10 +170,9 @@ static int mxsfb_load(struct drm_device *drm, unsigned long flags)
/* Modeset init */
drm_mode_config_init(drm);
- ret = drm_simple_display_pipe_init(drm, &mxsfb->pipe, &mxsfb_funcs,
- mxsfb_formats, ARRAY_SIZE(mxsfb_formats), NULL, NULL);
+ ret = mxsfb_kms_init(mxsfb);
if (ret < 0) {
- dev_err(drm->dev, "Cannot setup simple display pipe\n");
+ dev_err(drm->dev, "Failed to initialize KMS pipeline\n");
goto err_vblank;
}
@@ -310,11 +228,11 @@ static void mxsfb_unload(struct drm_device *drm)
pm_runtime_disable(drm->dev);
}
-static void mxsfb_irq_preinstall(struct drm_device *drm)
+static void mxsfb_irq_disable(struct drm_device *drm)
{
struct mxsfb_drm_private *mxsfb = drm->dev_private;
- mxsfb_pipe_disable_vblank(&mxsfb->pipe);
+ mxsfb->crtc.funcs->disable_vblank(&mxsfb->crtc);
}
static irqreturn_t mxsfb_irq_handler(int irq, void *data)
@@ -328,7 +246,7 @@ static irqreturn_t mxsfb_irq_handler(int irq, void *data)
reg = readl(mxsfb->base + LCDC_CTRL1);
if (reg & CTRL1_CUR_FRAME_DONE_IRQ)
- drm_crtc_handle_vblank(&mxsfb->pipe.crtc);
+ drm_crtc_handle_vblank(&mxsfb->crtc);
writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
@@ -342,8 +260,8 @@ DEFINE_DRM_GEM_CMA_FOPS(fops);
static struct drm_driver mxsfb_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
.irq_handler = mxsfb_irq_handler,
- .irq_preinstall = mxsfb_irq_preinstall,
- .irq_uninstall = mxsfb_irq_preinstall,
+ .irq_preinstall = mxsfb_irq_disable,
+ .irq_uninstall = mxsfb_irq_disable,
DRM_GEM_CMA_DRIVER_OPS,
.fops = &fops,
.name = "mxsfb-drm",
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.h b/drivers/gpu/drm/mxsfb/mxsfb_drv.h
index 0e3e5a63bbf9..edd766ad254f 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.h
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.h
@@ -8,7 +8,12 @@
#ifndef __MXSFB_DRV_H__
#define __MXSFB_DRV_H__
-struct drm_device;
+#include <drm/drm_crtc.h>
+#include <drm/drm_device.h>
+#include <drm/drm_encoder.h>
+#include <drm/drm_plane.h>
+
+struct clk;
struct mxsfb_devdata {
unsigned int transfer_count;
@@ -29,20 +34,22 @@ struct mxsfb_drm_private {
struct clk *clk_disp_axi;
struct drm_device *drm;
- struct drm_simple_display_pipe pipe;
+ struct drm_plane plane;
+ struct drm_crtc crtc;
+ struct drm_encoder encoder;
struct drm_connector *connector;
struct drm_bridge *bridge;
};
-int mxsfb_setup_crtc(struct drm_device *dev);
-int mxsfb_create_output(struct drm_device *dev);
+static inline struct mxsfb_drm_private *
+to_mxsfb_drm_private(struct drm_device *drm)
+{
+ return drm->dev_private;
+}
void mxsfb_enable_axi_clk(struct mxsfb_drm_private *mxsfb);
void mxsfb_disable_axi_clk(struct mxsfb_drm_private *mxsfb);
-void mxsfb_crtc_enable(struct mxsfb_drm_private *mxsfb);
-void mxsfb_crtc_disable(struct mxsfb_drm_private *mxsfb);
-void mxsfb_plane_atomic_update(struct mxsfb_drm_private *mxsfb,
- struct drm_plane_state *state);
+int mxsfb_kms_init(struct mxsfb_drm_private *mxsfb);
#endif /* __MXSFB_DRV_H__ */
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_kms.c b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
index c4f1575b4210..e2f0bc40d1a0 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_kms.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
@@ -9,15 +9,21 @@
*/
#include <linux/clk.h>
+#include <linux/io.h>
#include <linux/iopoll.h>
+#include <linux/pm_runtime.h>
#include <linux/spinlock.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_crtc.h>
+#include <drm/drm_encoder.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem_cma_helper.h>
-#include <drm/drm_simple_kms_helper.h>
+#include <drm/drm_plane.h>
+#include <drm/drm_plane_helper.h>
#include <drm/drm_vblank.h>
#include "mxsfb_drv.h"
@@ -26,6 +32,10 @@
/* 1 second delay should be plenty of time for block reset */
#define RESET_TIMEOUT 1000000
+/* -----------------------------------------------------------------------------
+ * CRTC
+ */
+
static u32 set_hsync_pulse_width(struct mxsfb_drm_private *mxsfb, u32 val)
{
return (val & mxsfb->devdata->hs_wdth_mask) <<
@@ -35,9 +45,8 @@ static u32 set_hsync_pulse_width(struct mxsfb_drm_private *mxsfb, u32 val)
/* Setup the MXSFB registers for decoding the pixels out of the framebuffer */
static int mxsfb_set_pixel_fmt(struct mxsfb_drm_private *mxsfb)
{
- struct drm_crtc *crtc = &mxsfb->pipe.crtc;
- struct drm_device *drm = crtc->dev;
- const u32 format = crtc->primary->state->fb->format->format;
+ struct drm_device *drm = mxsfb->drm;
+ const u32 format = mxsfb->crtc.primary->state->fb->format->format;
u32 ctrl, ctrl1;
ctrl = CTRL_BYPASS_COUNT | CTRL_MASTER;
@@ -71,8 +80,7 @@ static int mxsfb_set_pixel_fmt(struct mxsfb_drm_private *mxsfb)
static void mxsfb_set_bus_fmt(struct mxsfb_drm_private *mxsfb)
{
- struct drm_crtc *crtc = &mxsfb->pipe.crtc;
- struct drm_device *drm = crtc->dev;
+ struct drm_device *drm = mxsfb->drm;
u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;
u32 reg;
@@ -175,7 +183,7 @@ static int mxsfb_reset_block(struct mxsfb_drm_private *mxsfb)
static dma_addr_t mxsfb_get_fb_paddr(struct mxsfb_drm_private *mxsfb)
{
- struct drm_framebuffer *fb = mxsfb->pipe.plane.state->fb;
+ struct drm_framebuffer *fb = mxsfb->plane.state->fb;
struct drm_gem_cma_object *gem;
if (!fb)
@@ -190,8 +198,8 @@ static dma_addr_t mxsfb_get_fb_paddr(struct mxsfb_drm_private *mxsfb)
static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb)
{
- struct drm_device *drm = mxsfb->pipe.crtc.dev;
- struct drm_display_mode *m = &mxsfb->pipe.crtc.state->adjusted_mode;
+ struct drm_device *drm = mxsfb->crtc.dev;
+ struct drm_display_mode *m = &mxsfb->crtc.state->adjusted_mode;
u32 bus_flags = mxsfb->connector->display_info.bus_flags;
u32 vdctrl0, vsync_pulse_len, hsync_pulse_len;
int err;
@@ -273,10 +281,29 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb)
mxsfb->base + LCDC_VDCTRL4);
}
-void mxsfb_crtc_enable(struct mxsfb_drm_private *mxsfb)
+static int mxsfb_crtc_atomic_check(struct drm_crtc *crtc,
+ struct drm_crtc_state *state)
{
+ bool has_primary = state->plane_mask &
+ drm_plane_mask(crtc->primary);
+
+ /* The primary plane has to be enabled when the CRTC is active. */
+ if (state->active && !has_primary)
+ return -EINVAL;
+
+ /* TODO: Is this needed ? */
+ return drm_atomic_add_affected_planes(state->state, crtc);
+}
+
+static void mxsfb_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
+{
+ struct mxsfb_drm_private *mxsfb = to_mxsfb_drm_private(crtc->dev);
+ struct drm_device *drm = mxsfb->drm;
dma_addr_t paddr;
+ pm_runtime_get_sync(drm->dev);
+
mxsfb_enable_axi_clk(mxsfb);
mxsfb_crtc_mode_set_nofb(mxsfb);
@@ -290,17 +317,100 @@ void mxsfb_crtc_enable(struct mxsfb_drm_private *mxsfb)
mxsfb_enable_controller(mxsfb);
}
-void mxsfb_crtc_disable(struct mxsfb_drm_private *mxsfb)
+static void mxsfb_crtc_atomic_disable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
+ struct mxsfb_drm_private *mxsfb = to_mxsfb_drm_private(crtc->dev);
+ struct drm_device *drm = mxsfb->drm;
+ struct drm_pending_vblank_event *event;
+
mxsfb_disable_controller(mxsfb);
mxsfb_disable_axi_clk(mxsfb);
+
+ pm_runtime_put_sync(drm->dev);
+
+ spin_lock_irq(&drm->event_lock);
+ event = crtc->state->event;
+ if (event) {
+ crtc->state->event = NULL;
+ drm_crtc_send_vblank_event(crtc, event);
+ }
+ spin_unlock_irq(&drm->event_lock);
+}
+
+static int mxsfb_crtc_enable_vblank(struct drm_crtc *crtc)
+{
+ struct mxsfb_drm_private *mxsfb = to_mxsfb_drm_private(crtc->dev);
+
+ /* Clear and enable VBLANK IRQ */
+ mxsfb_enable_axi_clk(mxsfb);
+ writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
+ writel(CTRL1_CUR_FRAME_DONE_IRQ_EN, mxsfb->base + LCDC_CTRL1 + REG_SET);
+ mxsfb_disable_axi_clk(mxsfb);
+
+ return 0;
+}
+
+static void mxsfb_crtc_disable_vblank(struct drm_crtc *crtc)
+{
+ struct mxsfb_drm_private *mxsfb = to_mxsfb_drm_private(crtc->dev);
+
+ /* Disable and clear VBLANK IRQ */
+ mxsfb_enable_axi_clk(mxsfb);
+ writel(CTRL1_CUR_FRAME_DONE_IRQ_EN, mxsfb->base + LCDC_CTRL1 + REG_CLR);
+ writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
+ mxsfb_disable_axi_clk(mxsfb);
+}
+
+static const struct drm_crtc_helper_funcs mxsfb_crtc_helper_funcs = {
+ .atomic_check = mxsfb_crtc_atomic_check,
+ .atomic_enable = mxsfb_crtc_atomic_enable,
+ .atomic_disable = mxsfb_crtc_atomic_disable,
+};
+
+static const struct drm_crtc_funcs mxsfb_crtc_funcs = {
+ .reset = drm_atomic_helper_crtc_reset,
+ .destroy = drm_crtc_cleanup,
+ .set_config = drm_atomic_helper_set_config,
+ .page_flip = drm_atomic_helper_page_flip,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+ .enable_vblank = mxsfb_crtc_enable_vblank,
+ .disable_vblank = mxsfb_crtc_disable_vblank,
+};
+
+/* -----------------------------------------------------------------------------
+ * Encoder
+ */
+
+static const struct drm_encoder_funcs mxsfb_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+/* -----------------------------------------------------------------------------
+ * Planes
+ */
+
+static int mxsfb_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *plane_state)
+{
+ struct mxsfb_drm_private *mxsfb = to_mxsfb_drm_private(plane->dev);
+ struct drm_crtc_state *crtc_state;
+
+ crtc_state = drm_atomic_get_new_crtc_state(plane_state->state,
+ &mxsfb->crtc);
+
+ return drm_atomic_helper_check_plane_state(plane_state, crtc_state,
+ DRM_PLANE_HELPER_NO_SCALING,
+ DRM_PLANE_HELPER_NO_SCALING,
+ false, true);
}
-void mxsfb_plane_atomic_update(struct mxsfb_drm_private *mxsfb,
- struct drm_plane_state *state)
+static void mxsfb_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_pstate)
{
- struct drm_simple_display_pipe *pipe = &mxsfb->pipe;
- struct drm_crtc *crtc = &pipe->crtc;
+ struct mxsfb_drm_private *mxsfb = to_mxsfb_drm_private(plane->dev);
+ struct drm_crtc *crtc = &mxsfb->crtc;
struct drm_pending_vblank_event *event;
dma_addr_t paddr;
@@ -324,3 +434,47 @@ void mxsfb_plane_atomic_update(struct mxsfb_drm_private *mxsfb,
mxsfb_disable_axi_clk(mxsfb);
}
}
+
+static const struct drm_plane_helper_funcs mxsfb_plane_helper_funcs = {
+ .atomic_check = mxsfb_plane_atomic_check,
+ .atomic_update = mxsfb_plane_atomic_update,
+};
+
+static const struct drm_plane_funcs mxsfb_plane_funcs = {
+ .update_plane = drm_atomic_helper_update_plane,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .destroy = drm_plane_cleanup,
+ .reset = drm_atomic_helper_plane_reset,
+ .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+};
+
+static const uint32_t mxsfb_formats[] = {
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_RGB565
+};
+
+int mxsfb_kms_init(struct mxsfb_drm_private *mxsfb)
+{
+ struct drm_encoder *encoder = &mxsfb->encoder;
+ struct drm_plane *plane = &mxsfb->plane;
+ struct drm_crtc *crtc = &mxsfb->crtc;
+ int ret;
+
+ drm_plane_helper_add(plane, &mxsfb_plane_helper_funcs);
+ ret = drm_universal_plane_init(mxsfb->drm, plane, 0, &mxsfb_plane_funcs,
+ mxsfb_formats, ARRAY_SIZE(mxsfb_formats),
+ NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
+ if (ret)
+ return ret;
+
+ drm_crtc_helper_add(crtc, &mxsfb_crtc_helper_funcs);
+ ret = drm_crtc_init_with_planes(mxsfb->drm, crtc, plane, NULL,
+ &mxsfb_crtc_funcs, NULL);
+ if (ret)
+ return ret;
+
+ encoder->possible_crtcs = drm_crtc_mask(crtc);
+ return drm_encoder_init(mxsfb->drm, encoder, &mxsfb_encoder_funcs,
+ DRM_MODE_ENCODER_NONE, NULL);
+}
--
Regards,
Laurent Pinchart
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