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@ideasonboard.com Reviewed-by: Emil Velikov emil.l.velikov@gmail.com Reviewed-by: Stefan Agner stefan@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 | 114 ++---------------- drivers/gpu/drm/mxsfb/mxsfb_drv.h | 23 ++-- drivers/gpu/drm/mxsfb/mxsfb_kms.c | 190 +++++++++++++++++++++++++++--- 3 files changed, 203 insertions(+), 124 deletions(-)
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c index 0ee9e5cd492b..08b2b2735bc6 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" @@ -57,22 +58,6 @@ static const struct mxsfb_devdata mxsfb_devdata[] = { }, };
-static const uint32_t mxsfb_formats[] = { - DRM_FORMAT_XRGB8888, - DRM_FORMAT_RGB565 -}; - -static const uint64_t mxsfb_modifiers[] = { - DRM_FORMAT_MOD_LINEAR, - DRM_FORMAT_MOD_INVALID -}; - -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) @@ -95,77 +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; @@ -189,7 +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); @@ -256,11 +170,9 @@ static int mxsfb_load(struct drm_device *drm) /* Modeset init */ drm_mode_config_init(drm);
- ret = drm_simple_display_pipe_init(drm, &mxsfb->pipe, &mxsfb_funcs, - mxsfb_formats, ARRAY_SIZE(mxsfb_formats), - mxsfb_modifiers, 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; }
@@ -316,11 +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) @@ -334,7 +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);
@@ -348,8 +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..2346ad56daea 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 +434,53 @@ 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 +}; + +static const uint64_t mxsfb_modifiers[] = { + DRM_FORMAT_MOD_LINEAR, + DRM_FORMAT_MOD_INVALID +}; + +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), + mxsfb_modifiers, 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); +}