On Wed, Feb 04, 2015 at 09:20:51PM +0100, Boris Brezillon wrote:
> Convert the HLCDC driver to atomic mode-setting.
> 
> Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>

Just a quick comment: dpms isn't yet converted over, and from experience
with tegra/msm that probably will yield some surprises. Since only with
dpms will it be obvious how strict the added requirements from the atomic
helpers are ;-)
-Daniel

> ---
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c   | 142 ++----
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c     |   4 +
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h     |   5 +-
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c  |   4 +-
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h  |   3 +-
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c |   3 +
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c  | 556 
> +++++++++++++----------
>  7 files changed, 383 insertions(+), 334 deletions(-)
> 
> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c 
> b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
> index 0409b90..a69c966 100644
> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
> @@ -114,25 +114,17 @@ static void atmel_hlcdc_crtc_dpms(struct drm_crtc *c, 
> int mode)
>       crtc->dpms = mode;
>  }
>  
> -static int atmel_hlcdc_crtc_mode_set(struct drm_crtc *c,
> -                                  struct drm_display_mode *mode,
> -                                  struct drm_display_mode *adj,
> -                                  int x, int y,
> -                                  struct drm_framebuffer *old_fb)
> +static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c)
>  {
>       struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
>       struct regmap *regmap = crtc->dc->hlcdc->regmap;
> -     struct drm_plane *plane = c->primary;
> -     struct drm_framebuffer *fb;
> +     struct drm_display_mode *adj = &c->state->adjusted_mode;
>       unsigned long mode_rate;
>       struct videomode vm;
>       unsigned long prate;
>       unsigned int cfg;
>       int div;
>  
> -     if (atmel_hlcdc_dc_mode_valid(crtc->dc, adj) != MODE_OK)
> -             return -EINVAL;
> -
>       vm.vfront_porch = adj->crtc_vsync_start - adj->crtc_vdisplay;
>       vm.vback_porch = adj->crtc_vtotal - adj->crtc_vsync_end;
>       vm.vsync_len = adj->crtc_vsync_end - adj->crtc_vsync_start;
> @@ -156,7 +148,7 @@ static int atmel_hlcdc_crtc_mode_set(struct drm_crtc *c,
>       cfg = ATMEL_HLCDC_CLKPOL;
>  
>       prate = clk_get_rate(crtc->dc->hlcdc->sys_clk);
> -     mode_rate = mode->crtc_clock * 1000;
> +     mode_rate = adj->crtc_clock * 1000;
>       if ((prate / 2) < mode_rate) {
>               prate *= 2;
>               cfg |= ATMEL_HLCDC_CLKSEL;
> @@ -174,10 +166,10 @@ static int atmel_hlcdc_crtc_mode_set(struct drm_crtc *c,
>  
>       cfg = 0;
>  
> -     if (mode->flags & DRM_MODE_FLAG_NVSYNC)
> +     if (adj->flags & DRM_MODE_FLAG_NVSYNC)
>               cfg |= ATMEL_HLCDC_VSPOL;
>  
> -     if (mode->flags & DRM_MODE_FLAG_NHSYNC)
> +     if (adj->flags & DRM_MODE_FLAG_NHSYNC)
>               cfg |= ATMEL_HLCDC_HSPOL;
>  
>       regmap_update_bits(regmap, ATMEL_HLCDC_CFG(5),
> @@ -187,34 +179,6 @@ static int atmel_hlcdc_crtc_mode_set(struct drm_crtc *c,
>                          ATMEL_HLCDC_VSPSU | ATMEL_HLCDC_VSPHO |
>                          ATMEL_HLCDC_GUARDTIME_MASK,
>                          cfg);
> -
> -     fb = plane->fb;
> -     plane->fb = old_fb;
> -
> -     return atmel_hlcdc_plane_update_with_mode(plane, c, fb, 0, 0,
> -                                               adj->hdisplay, adj->vdisplay,
> -                                               x << 16, y << 16,
> -                                               adj->hdisplay << 16,
> -                                               adj->vdisplay << 16,
> -                                               adj);
> -}
> -
> -int atmel_hlcdc_crtc_mode_set_base(struct drm_crtc *c, int x, int y,
> -                                struct drm_framebuffer *old_fb)
> -{
> -     struct drm_plane *plane = c->primary;
> -     struct drm_framebuffer *fb = plane->fb;
> -     struct drm_display_mode *mode = &c->hwmode;
> -
> -     plane->fb = old_fb;
> -
> -     return plane->funcs->update_plane(plane, c, fb,
> -                                       0, 0,
> -                                       mode->hdisplay,
> -                                       mode->vdisplay,
> -                                       x << 16, y << 16,
> -                                       mode->hdisplay << 16,
> -                                       mode->vdisplay << 16);
>  }
>  
>  static void atmel_hlcdc_crtc_prepare(struct drm_crtc *crtc)
> @@ -250,14 +214,48 @@ static void atmel_hlcdc_crtc_disable(struct drm_crtc 
> *crtc)
>       }
>  }
>  
> +static int atmel_hlcdc_crtc_atomic_check(struct drm_crtc *c,
> +                                      struct drm_crtc_state *s)
> +{
> +     struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
> +
> +     if (atmel_hlcdc_dc_mode_valid(crtc->dc, &s->adjusted_mode) != MODE_OK)
> +             return -EINVAL;
> +
> +     return 0;
> +}
> +
> +static void atmel_hlcdc_crtc_atomic_begin(struct drm_crtc *c)
> +{
> +     struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
> +
> +     if (c->state->event) {
> +             c->state->event->pipe = drm_crtc_index(c);
> +
> +             WARN_ON(drm_crtc_vblank_get(c) != 0);
> +
> +             crtc->event = c->state->event;
> +             c->state->event = NULL;
> +     }
> +}
> +
> +static void atmel_hlcdc_crtc_atomic_flush(struct drm_crtc *crtc)
> +{
> +     /* TODO: write common plane control register if available */
> +}
> +
>  static const struct drm_crtc_helper_funcs lcdc_crtc_helper_funcs = {
>       .mode_fixup = atmel_hlcdc_crtc_mode_fixup,
>       .dpms = atmel_hlcdc_crtc_dpms,
> -     .mode_set = atmel_hlcdc_crtc_mode_set,
> -     .mode_set_base = atmel_hlcdc_crtc_mode_set_base,
> +     .mode_set = drm_helper_crtc_mode_set,
> +     .mode_set_nofb = atmel_hlcdc_crtc_mode_set_nofb,
> +     .mode_set_base = drm_helper_crtc_mode_set_base,
>       .prepare = atmel_hlcdc_crtc_prepare,
>       .commit = atmel_hlcdc_crtc_commit,
>       .disable = atmel_hlcdc_crtc_disable,
> +     .atomic_check = atmel_hlcdc_crtc_atomic_check,
> +     .atomic_begin = atmel_hlcdc_crtc_atomic_begin,
> +     .atomic_flush = atmel_hlcdc_crtc_atomic_flush,
>  };
>  
>  static void atmel_hlcdc_crtc_destroy(struct drm_crtc *c)
> @@ -306,61 +304,13 @@ void atmel_hlcdc_crtc_irq(struct drm_crtc *c)
>       atmel_hlcdc_crtc_finish_page_flip(drm_crtc_to_atmel_hlcdc_crtc(c));
>  }
>  
> -static int atmel_hlcdc_crtc_page_flip(struct drm_crtc *c,
> -                                   struct drm_framebuffer *fb,
> -                                   struct drm_pending_vblank_event *event,
> -                                   uint32_t page_flip_flags)
> -{
> -     struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
> -     struct atmel_hlcdc_plane_update_req req;
> -     struct drm_plane *plane = c->primary;
> -     struct drm_device *dev = c->dev;
> -     unsigned long flags;
> -     int ret = 0;
> -
> -     spin_lock_irqsave(&dev->event_lock, flags);
> -     if (crtc->event)
> -             ret = -EBUSY;
> -     spin_unlock_irqrestore(&dev->event_lock, flags);
> -
> -     if (ret)
> -             return ret;
> -
> -     memset(&req, 0, sizeof(req));
> -     req.crtc_x = 0;
> -     req.crtc_y = 0;
> -     req.crtc_h = c->mode.crtc_vdisplay;
> -     req.crtc_w = c->mode.crtc_hdisplay;
> -     req.src_x = c->x << 16;
> -     req.src_y = c->y << 16;
> -     req.src_w = req.crtc_w << 16;
> -     req.src_h = req.crtc_h << 16;
> -     req.fb = fb;
> -
> -     ret = atmel_hlcdc_plane_prepare_update_req(plane, &req, &c->hwmode);
> -     if (ret)
> -             return ret;
> -
> -     if (event) {
> -             drm_vblank_get(c->dev, crtc->id);
> -             spin_lock_irqsave(&dev->event_lock, flags);
> -             crtc->event = event;
> -             spin_unlock_irqrestore(&dev->event_lock, flags);
> -     }
> -
> -     ret = atmel_hlcdc_plane_apply_update_req(plane, &req);
> -     if (ret)
> -             crtc->event = NULL;
> -     else
> -             plane->fb = fb;
> -
> -     return ret;
> -}
> -
>  static const struct drm_crtc_funcs atmel_hlcdc_crtc_funcs = {
> -     .page_flip = atmel_hlcdc_crtc_page_flip,
> -     .set_config = drm_crtc_helper_set_config,
> +     .page_flip = drm_atomic_helper_page_flip,
> +     .set_config = drm_atomic_helper_set_config,
>       .destroy = atmel_hlcdc_crtc_destroy,
> +     .reset = drm_atomic_helper_crtc_reset,
> +     .atomic_duplicate_state =  drm_atomic_helper_crtc_duplicate_state,
> +     .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
>  };
>  
>  int atmel_hlcdc_crtc_create(struct drm_device *dev)
> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c 
> b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
> index 7320a6c..47fd147 100644
> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
> @@ -222,6 +222,8 @@ static void atmel_hlcdc_fb_output_poll_changed(struct 
> drm_device *dev)
>  static const struct drm_mode_config_funcs mode_config_funcs = {
>       .fb_create = atmel_hlcdc_fb_create,
>       .output_poll_changed = atmel_hlcdc_fb_output_poll_changed,
> +     .atomic_check = drm_atomic_helper_check,
> +     .atomic_commit = drm_atomic_helper_commit,
>  };
>  
>  static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
> @@ -319,6 +321,8 @@ static int atmel_hlcdc_dc_load(struct drm_device *dev)
>               goto err_periph_clk_disable;
>       }
>  
> +     drm_mode_config_reset(dev);
> +
>       ret = drm_vblank_init(dev, 1);
>       if (ret < 0) {
>               dev_err(dev->dev, "failed to initialize vblank\n");
> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h 
> b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
> index 7bc96af..c18da22 100644
> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
> @@ -26,11 +26,14 @@
>  #include <linux/irqdomain.h>
>  #include <linux/pwm.h>
>  
> +#include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_helper.h>
>  #include <drm/drm_crtc.h>
>  #include <drm/drm_crtc_helper.h>
>  #include <drm/drm_fb_cma_helper.h>
>  #include <drm/drm_gem_cma_helper.h>
>  #include <drm/drm_panel.h>
> +#include <drm/drm_plane_helper.h>
>  #include <drm/drmP.h>
>  
>  #include "atmel_hlcdc_layer.h"
> @@ -69,7 +72,6 @@ struct atmel_hlcdc_dc_desc {
>   */
>  struct atmel_hlcdc_plane_properties {
>       struct drm_property *alpha;
> -     struct drm_property *rotation;
>  };
>  
>  /**
> @@ -84,7 +86,6 @@ struct atmel_hlcdc_plane {
>       struct drm_plane base;
>       struct atmel_hlcdc_layer layer;
>       struct atmel_hlcdc_plane_properties *properties;
> -     unsigned int rotation;
>  };
>  
>  static inline struct atmel_hlcdc_plane *
> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c 
> b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c
> index 063d2a7..d1dca39 100644
> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c
> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.c
> @@ -298,7 +298,7 @@ void atmel_hlcdc_layer_irq(struct atmel_hlcdc_layer 
> *layer)
>       spin_unlock_irqrestore(&layer->lock, flags);
>  }
>  
> -int atmel_hlcdc_layer_disable(struct atmel_hlcdc_layer *layer)
> +void atmel_hlcdc_layer_disable(struct atmel_hlcdc_layer *layer)
>  {
>       struct atmel_hlcdc_layer_dma_channel *dma = &layer->dma;
>       struct atmel_hlcdc_layer_update *upd = &layer->update;
> @@ -340,8 +340,6 @@ int atmel_hlcdc_layer_disable(struct atmel_hlcdc_layer 
> *layer)
>       dma->status = ATMEL_HLCDC_LAYER_DISABLED;
>  
>       spin_unlock_irqrestore(&layer->lock, flags);
> -
> -     return 0;
>  }
>  
>  int atmel_hlcdc_layer_update_start(struct atmel_hlcdc_layer *layer)
> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h 
> b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h
> index 27e56c0..9beabc9 100644
> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h
> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_layer.h
> @@ -120,6 +120,7 @@
>  #define ATMEL_HLCDC_LAYER_DISCEN             BIT(11)
>  #define ATMEL_HLCDC_LAYER_GA_SHIFT           16
>  #define ATMEL_HLCDC_LAYER_GA_MASK            GENMASK(23, 
> ATMEL_HLCDC_LAYER_GA_SHIFT)
> +#define ATMEL_HLCDC_LAYER_GA(x)                      ((x) << 
> ATMEL_HLCDC_LAYER_GA_SHIFT)
>  
>  #define ATMEL_HLCDC_LAYER_CSC_CFG(p, o)              
> ATMEL_HLCDC_LAYER_CFG(p, (p)->desc->layout.csc + o)
>  
> @@ -376,7 +377,7 @@ int atmel_hlcdc_layer_init(struct drm_device *dev,
>  void atmel_hlcdc_layer_cleanup(struct drm_device *dev,
>                              struct atmel_hlcdc_layer *layer);
>  
> -int atmel_hlcdc_layer_disable(struct atmel_hlcdc_layer *layer);
> +void atmel_hlcdc_layer_disable(struct atmel_hlcdc_layer *layer);
>  
>  int atmel_hlcdc_layer_update_start(struct atmel_hlcdc_layer *layer);
>  
> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c 
> b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
> index b049f22..1e814c7 100644
> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
> @@ -234,6 +234,9 @@ static const struct drm_connector_funcs 
> atmel_hlcdc_panel_connector_funcs = {
>       .detect = atmel_hlcdc_panel_connector_detect,
>       .fill_modes = drm_helper_probe_single_connector_modes,
>       .destroy = atmel_hlcdc_panel_connector_destroy,
> +     .reset = drm_atomic_helper_connector_reset,
> +     .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> +     .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>  };
>  
>  static int atmel_hlcdc_create_panel_output(struct drm_device *dev,
> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c 
> b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
> index c5892dc..4aa473c 100644
> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
> @@ -19,6 +19,52 @@
>  
>  #include "atmel_hlcdc_dc.h"
>  
> +/**
> + * Atmel HLCDC Plane state structure.
> + *
> + * @base: DRM plane state
> + * @crtc_x: x position of the plane relative to the CRTC
> + * @crtc_y: y position of the plane relative to the CRTC
> + * @crtc_w: visible width of the plane
> + * @crtc_h: visible height of the plane
> + * @src_x: x buffer position
> + * @src_y: y buffer position
> + * @src_w: buffer width
> + * @src_h: buffer height
> + * @alpha: alpha blending of the plane
> + * @bpp: bytes per pixel deduced from pixel_format
> + * @offsets: offsets to apply to the GEM buffers
> + * @xstride: value to add to the pixel pointer between each line
> + * @pstride: value to add to the pixel pointer between each pixel
> + * @nplanes: number of planes (deduced from pixel_format)
> + */
> +struct atmel_hlcdc_plane_state {
> +     struct drm_plane_state base;
> +     int crtc_x;
> +     int crtc_y;
> +     unsigned int crtc_w;
> +     unsigned int crtc_h;
> +     uint32_t src_x;
> +     uint32_t src_y;
> +     uint32_t src_w;
> +     uint32_t src_h;
> +
> +     u8 alpha;
> +
> +     /* These fields are private and should not be touched */
> +     int bpp[ATMEL_HLCDC_MAX_PLANES];
> +     unsigned int offsets[ATMEL_HLCDC_MAX_PLANES];
> +     int xstride[ATMEL_HLCDC_MAX_PLANES];
> +     int pstride[ATMEL_HLCDC_MAX_PLANES];
> +     int nplanes;
> +};
> +
> +static inline struct atmel_hlcdc_plane_state *
> +drm_plane_state_to_atmel_hlcdc_plane_state(struct drm_plane_state *s)
> +{
> +     return container_of(s, struct atmel_hlcdc_plane_state, base);
> +}
> +
>  #define SUBPIXEL_MASK                        0xffff
>  
>  static uint32_t rgb_formats[] = {
> @@ -128,7 +174,7 @@ static int atmel_hlcdc_format_to_plane_mode(u32 format, 
> u32 *mode)
>       return 0;
>  }
>  
> -static bool atmel_hlcdc_format_embedds_alpha(u32 format)
> +static bool atmel_hlcdc_format_embeds_alpha(u32 format)
>  {
>       int i;
>  
> @@ -204,7 +250,7 @@ static u32 heo_upscaling_ycoef[] = {
>  
>  static void
>  atmel_hlcdc_plane_update_pos_and_size(struct atmel_hlcdc_plane *plane,
> -                             struct atmel_hlcdc_plane_update_req *req)
> +                                   struct atmel_hlcdc_plane_state *state)
>  {
>       const struct atmel_hlcdc_layer_cfg_layout *layout =
>                                               &plane->layer.desc->layout;
> @@ -213,69 +259,69 @@ atmel_hlcdc_plane_update_pos_and_size(struct 
> atmel_hlcdc_plane *plane,
>               atmel_hlcdc_layer_update_cfg(&plane->layer,
>                                            layout->size,
>                                            0xffffffff,
> -                                          (req->crtc_w - 1) |
> -                                          ((req->crtc_h - 1) << 16));
> +                                          (state->crtc_w - 1) |
> +                                          ((state->crtc_h - 1) << 16));
>  
>       if (layout->memsize)
>               atmel_hlcdc_layer_update_cfg(&plane->layer,
>                                            layout->memsize,
>                                            0xffffffff,
> -                                          (req->src_w - 1) |
> -                                          ((req->src_h - 1) << 16));
> +                                          (state->src_w - 1) |
> +                                          ((state->src_h - 1) << 16));
>  
>       if (layout->pos)
>               atmel_hlcdc_layer_update_cfg(&plane->layer,
>                                            layout->pos,
>                                            0xffffffff,
> -                                          req->crtc_x |
> -                                          (req->crtc_y  << 16));
> +                                          state->crtc_x |
> +                                          (state->crtc_y  << 16));
>  
>       /* TODO: rework the rescaling part */
> -     if (req->crtc_w != req->src_w || req->crtc_h != req->src_h) {
> +     if (state->crtc_w != state->src_w || state->crtc_h != state->src_h) {
>               u32 factor_reg = 0;
>  
> -             if (req->crtc_w != req->src_w) {
> +             if (state->crtc_w != state->src_w) {
>                       int i;
>                       u32 factor;
>                       u32 *coeff_tab = heo_upscaling_xcoef;
>                       u32 max_memsize;
>  
> -                     if (req->crtc_w < req->src_w)
> +                     if (state->crtc_w < state->src_w)
>                               coeff_tab = heo_downscaling_xcoef;
>                       for (i = 0; i < ARRAY_SIZE(heo_upscaling_xcoef); i++)
>                               atmel_hlcdc_layer_update_cfg(&plane->layer,
>                                                            17 + i,
>                                                            0xffffffff,
>                                                            coeff_tab[i]);
> -                     factor = ((8 * 256 * req->src_w) - (256 * 4)) /
> -                              req->crtc_w;
> +                     factor = ((8 * 256 * state->src_w) - (256 * 4)) /
> +                              state->crtc_w;
>                       factor++;
> -                     max_memsize = ((factor * req->crtc_w) + (256 * 4)) /
> +                     max_memsize = ((factor * state->crtc_w) + (256 * 4)) /
>                                     2048;
> -                     if (max_memsize > req->src_w)
> +                     if (max_memsize > state->src_w)
>                               factor--;
>                       factor_reg |= factor | 0x80000000;
>               }
>  
> -             if (req->crtc_h != req->src_h) {
> +             if (state->crtc_h != state->src_h) {
>                       int i;
>                       u32 factor;
>                       u32 *coeff_tab = heo_upscaling_ycoef;
>                       u32 max_memsize;
>  
> -                     if (req->crtc_w < req->src_w)
> +                     if (state->crtc_w < state->src_w)
>                               coeff_tab = heo_downscaling_ycoef;
>                       for (i = 0; i < ARRAY_SIZE(heo_upscaling_ycoef); i++)
>                               atmel_hlcdc_layer_update_cfg(&plane->layer,
>                                                            33 + i,
>                                                            0xffffffff,
>                                                            coeff_tab[i]);
> -                     factor = ((8 * 256 * req->src_w) - (256 * 4)) /
> -                              req->crtc_w;
> +                     factor = ((8 * 256 * state->src_w) - (256 * 4)) /
> +                              state->crtc_w;
>                       factor++;
> -                     max_memsize = ((factor * req->crtc_w) + (256 * 4)) /
> +                     max_memsize = ((factor * state->crtc_w) + (256 * 4)) /
>                                     2048;
> -                     if (max_memsize > req->src_w)
> +                     if (max_memsize > state->src_w)
>                               factor--;
>                       factor_reg |= (factor << 16) | 0x80000000;
>               }
> @@ -287,7 +333,7 @@ atmel_hlcdc_plane_update_pos_and_size(struct 
> atmel_hlcdc_plane *plane,
>  
>  static void
>  atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane,
> -                             struct atmel_hlcdc_plane_update_req *req)
> +                                     struct atmel_hlcdc_plane_state *state)
>  {
>       const struct atmel_hlcdc_layer_cfg_layout *layout =
>                                               &plane->layer.desc->layout;
> @@ -297,10 +343,11 @@ atmel_hlcdc_plane_update_general_settings(struct 
> atmel_hlcdc_plane *plane,
>               cfg |= ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_ITER2BL |
>                      ATMEL_HLCDC_LAYER_ITER;
>  
> -             if (atmel_hlcdc_format_embedds_alpha(req->fb->pixel_format))
> +             if 
> (atmel_hlcdc_format_embeds_alpha(state->base.fb->pixel_format))
>                       cfg |= ATMEL_HLCDC_LAYER_LAEN;
>               else
> -                     cfg |= ATMEL_HLCDC_LAYER_GAEN;
> +                     cfg |= ATMEL_HLCDC_LAYER_GAEN |
> +                            ATMEL_HLCDC_LAYER_GA(state->alpha);
>       }
>  
>       atmel_hlcdc_layer_update_cfg(&plane->layer,
> @@ -312,24 +359,26 @@ atmel_hlcdc_plane_update_general_settings(struct 
> atmel_hlcdc_plane *plane,
>                                    ATMEL_HLCDC_LAYER_ITER2BL |
>                                    ATMEL_HLCDC_LAYER_ITER |
>                                    ATMEL_HLCDC_LAYER_GAEN |
> +                                  ATMEL_HLCDC_LAYER_GA_MASK |
>                                    ATMEL_HLCDC_LAYER_LAEN |
>                                    ATMEL_HLCDC_LAYER_OVR |
>                                    ATMEL_HLCDC_LAYER_DMA, cfg);
>  }
>  
>  static void atmel_hlcdc_plane_update_format(struct atmel_hlcdc_plane *plane,
> -                             struct atmel_hlcdc_plane_update_req *req)
> +                                     struct atmel_hlcdc_plane_state *state)
>  {
>       u32 cfg;
>       int ret;
>  
> -     ret = atmel_hlcdc_format_to_plane_mode(req->fb->pixel_format, &cfg);
> +     ret = atmel_hlcdc_format_to_plane_mode(state->base.fb->pixel_format,
> +                                            &cfg);
>       if (ret)
>               return;
>  
> -     if ((req->fb->pixel_format == DRM_FORMAT_YUV422 ||
> -          req->fb->pixel_format == DRM_FORMAT_NV61) &&
> -         (plane->rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))))
> +     if ((state->base.fb->pixel_format == DRM_FORMAT_YUV422 ||
> +          state->base.fb->pixel_format == DRM_FORMAT_NV61) &&
> +         (state->base.rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))))
>               cfg |= ATMEL_HLCDC_YUV422ROT;
>  
>       atmel_hlcdc_layer_update_cfg(&plane->layer,
> @@ -341,7 +390,7 @@ static void atmel_hlcdc_plane_update_format(struct 
> atmel_hlcdc_plane *plane,
>        * Rotation optimization is not working on RGB888 (rotation is still
>        * working but without any optimization).
>        */
> -     if (req->fb->pixel_format == DRM_FORMAT_RGB888)
> +     if (state->base.fb->pixel_format == DRM_FORMAT_RGB888)
>               cfg = ATMEL_HLCDC_LAYER_DMA_ROTDIS;
>       else
>               cfg = 0;
> @@ -352,73 +401,44 @@ static void atmel_hlcdc_plane_update_format(struct 
> atmel_hlcdc_plane *plane,
>  }
>  
>  static void atmel_hlcdc_plane_update_buffers(struct atmel_hlcdc_plane *plane,
> -                             struct atmel_hlcdc_plane_update_req *req)
> +                                     struct atmel_hlcdc_plane_state *state)
>  {
>       struct atmel_hlcdc_layer *layer = &plane->layer;
>       const struct atmel_hlcdc_layer_cfg_layout *layout =
>                                                       &layer->desc->layout;
>       int i;
>  
> -     atmel_hlcdc_layer_update_set_fb(&plane->layer, req->fb, req->offsets);
> +     atmel_hlcdc_layer_update_set_fb(&plane->layer, state->base.fb,
> +                                     state->offsets);
>  
> -     for (i = 0; i < req->nplanes; i++) {
> +     for (i = 0; i < state->nplanes; i++) {
>               if (layout->xstride[i]) {
>                       atmel_hlcdc_layer_update_cfg(&plane->layer,
>                                               layout->xstride[i],
>                                               0xffffffff,
> -                                             req->xstride[i]);
> +                                             state->xstride[i]);
>               }
>  
>               if (layout->pstride[i]) {
>                       atmel_hlcdc_layer_update_cfg(&plane->layer,
>                                               layout->pstride[i],
>                                               0xffffffff,
> -                                             req->pstride[i]);
> +                                             state->pstride[i]);
>               }
>       }
>  }
>  
> -static int atmel_hlcdc_plane_check_update_req(struct drm_plane *p,
> -                             struct atmel_hlcdc_plane_update_req *req,
> -                             const struct drm_display_mode *mode)
> +static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
> +                                       struct drm_plane_state *s)
>  {
>       struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
> +     struct atmel_hlcdc_plane_state *state =
> +                             drm_plane_state_to_atmel_hlcdc_plane_state(s);
>       const struct atmel_hlcdc_layer_cfg_layout *layout =
>                                               &plane->layer.desc->layout;
> -
> -     if (!layout->size &&
> -         (mode->hdisplay != req->crtc_w ||
> -          mode->vdisplay != req->crtc_h))
> -             return -EINVAL;
> -
> -     if (plane->layer.desc->max_height &&
> -         req->crtc_h > plane->layer.desc->max_height)
> -             return -EINVAL;
> -
> -     if (plane->layer.desc->max_width &&
> -         req->crtc_w > plane->layer.desc->max_width)
> -             return -EINVAL;
> -
> -     if ((req->crtc_h != req->src_h || req->crtc_w != req->src_w) &&
> -         (!layout->memsize ||
> -          atmel_hlcdc_format_embedds_alpha(req->fb->pixel_format)))
> -             return -EINVAL;
> -
> -     if (req->crtc_x < 0 || req->crtc_y < 0)
> -             return -EINVAL;
> -
> -     if (req->crtc_w + req->crtc_x > mode->hdisplay ||
> -         req->crtc_h + req->crtc_y > mode->vdisplay)
> -             return -EINVAL;
> -
> -     return 0;
> -}
> -
> -int atmel_hlcdc_plane_prepare_update_req(struct drm_plane *p,
> -                             struct atmel_hlcdc_plane_update_req *req,
> -                             const struct drm_display_mode *mode)
> -{
> -     struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
> +     struct drm_framebuffer *fb = state->base.fb;
> +     const struct drm_display_mode *mode;
> +     struct drm_crtc_state *crtc_state;
>       unsigned int patched_crtc_w;
>       unsigned int patched_crtc_h;
>       unsigned int patched_src_w;
> @@ -430,196 +450,202 @@ int atmel_hlcdc_plane_prepare_update_req(struct 
> drm_plane *p,
>       int vsub = 1;
>       int i;
>  
> -     if ((req->src_x | req->src_y | req->src_w | req->src_h) &
> +     if (!state->base.crtc || !fb)
> +             return 0;
> +
> +     crtc_state = s->state->crtc_states[drm_crtc_index(s->crtc)];
> +     mode = &crtc_state->adjusted_mode;
> +
> +     state->src_x = s->src_x;
> +     state->src_y = s->src_y;
> +     state->src_h = s->src_h;
> +     state->src_w = s->src_w;
> +     state->crtc_x = s->crtc_x;
> +     state->crtc_y = s->crtc_y;
> +     state->crtc_h = s->crtc_h;
> +     state->crtc_w = s->crtc_w;
> +     if ((state->src_x | state->src_y | state->src_w | state->src_h) &
>           SUBPIXEL_MASK)
>               return -EINVAL;
>  
> -     req->src_x >>= 16;
> -     req->src_y >>= 16;
> -     req->src_w >>= 16;
> -     req->src_h >>= 16;
> +     state->src_x >>= 16;
> +     state->src_y >>= 16;
> +     state->src_w >>= 16;
> +     state->src_h >>= 16;
>  
> -     req->nplanes = drm_format_num_planes(req->fb->pixel_format);
> -     if (req->nplanes > ATMEL_HLCDC_MAX_PLANES)
> +     state->nplanes = drm_format_num_planes(fb->pixel_format);
> +     if (state->nplanes > ATMEL_HLCDC_MAX_PLANES)
>               return -EINVAL;
>  
>       /*
>        * Swap width and size in case of 90 or 270 degrees rotation
>        */
> -     if (plane->rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))) {
> -             tmp = req->crtc_w;
> -             req->crtc_w = req->crtc_h;
> -             req->crtc_h = tmp;
> -             tmp = req->src_w;
> -             req->src_w = req->src_h;
> -             req->src_h = tmp;
> +     if (state->base.rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))) {
> +             tmp = state->crtc_w;
> +             state->crtc_w = state->crtc_h;
> +             state->crtc_h = tmp;
> +             tmp = state->src_w;
> +             state->src_w = state->src_h;
> +             state->src_h = tmp;
>       }
>  
> -     if (req->crtc_x + req->crtc_w > mode->hdisplay)
> -             patched_crtc_w = mode->hdisplay - req->crtc_x;
> +     if (state->crtc_x + state->crtc_w > mode->hdisplay)
> +             patched_crtc_w = mode->hdisplay - state->crtc_x;
>       else
> -             patched_crtc_w = req->crtc_w;
> +             patched_crtc_w = state->crtc_w;
>  
> -     if (req->crtc_x < 0) {
> -             patched_crtc_w += req->crtc_x;
> -             x_offset = -req->crtc_x;
> -             req->crtc_x = 0;
> +     if (state->crtc_x < 0) {
> +             patched_crtc_w += state->crtc_x;
> +             x_offset = -state->crtc_x;
> +             state->crtc_x = 0;
>       }
>  
> -     if (req->crtc_y + req->crtc_h > mode->vdisplay)
> -             patched_crtc_h = mode->vdisplay - req->crtc_y;
> +     if (state->crtc_y + state->crtc_h > mode->vdisplay)
> +             patched_crtc_h = mode->vdisplay - state->crtc_y;
>       else
> -             patched_crtc_h = req->crtc_h;
> +             patched_crtc_h = state->crtc_h;
>  
> -     if (req->crtc_y < 0) {
> -             patched_crtc_h += req->crtc_y;
> -             y_offset = -req->crtc_y;
> -             req->crtc_y = 0;
> +     if (state->crtc_y < 0) {
> +             patched_crtc_h += state->crtc_y;
> +             y_offset = -state->crtc_y;
> +             state->crtc_y = 0;
>       }
>  
> -     patched_src_w = DIV_ROUND_CLOSEST(patched_crtc_w * req->src_w,
> -                                       req->crtc_w);
> -     patched_src_h = DIV_ROUND_CLOSEST(patched_crtc_h * req->src_h,
> -                                       req->crtc_h);
> +     patched_src_w = DIV_ROUND_CLOSEST(patched_crtc_w * state->src_w,
> +                                       state->crtc_w);
> +     patched_src_h = DIV_ROUND_CLOSEST(patched_crtc_h * state->src_h,
> +                                       state->crtc_h);
>  
> -     hsub = drm_format_horz_chroma_subsampling(req->fb->pixel_format);
> -     vsub = drm_format_vert_chroma_subsampling(req->fb->pixel_format);
> +     hsub = drm_format_horz_chroma_subsampling(fb->pixel_format);
> +     vsub = drm_format_vert_chroma_subsampling(fb->pixel_format);
>  
> -     for (i = 0; i < req->nplanes; i++) {
> +     for (i = 0; i < state->nplanes; i++) {
>               unsigned int offset = 0;
>               int xdiv = i ? hsub : 1;
>               int ydiv = i ? vsub : 1;
>  
> -             req->bpp[i] = drm_format_plane_cpp(req->fb->pixel_format, i);
> -             if (!req->bpp[i])
> +             state->bpp[i] = drm_format_plane_cpp(fb->pixel_format, i);
> +             if (!state->bpp[i])
>                       return -EINVAL;
>  
> -             switch (plane->rotation & 0xf) {
> +             switch (state->base.rotation & 0xf) {
>               case BIT(DRM_ROTATE_90):
> -                     offset = ((y_offset + req->src_y + patched_src_w - 1) /
> -                               ydiv) * req->fb->pitches[i];
> -                     offset += ((x_offset + req->src_x) / xdiv) *
> -                               req->bpp[i];
> -                     req->xstride[i] = ((patched_src_w - 1) / ydiv) *
> -                                       req->fb->pitches[i];
> -                     req->pstride[i] = -req->fb->pitches[i] - req->bpp[i];
> +                     offset = ((y_offset + state->src_y + patched_src_w - 1) 
> /
> +                               ydiv) * fb->pitches[i];
> +                     offset += ((x_offset + state->src_x) / xdiv) *
> +                               state->bpp[i];
> +                     state->xstride[i] = ((patched_src_w - 1) / ydiv) *
> +                                       fb->pitches[i];
> +                     state->pstride[i] = -fb->pitches[i] - state->bpp[i];
>                       break;
>               case BIT(DRM_ROTATE_180):
> -                     offset = ((y_offset + req->src_y + patched_src_h - 1) /
> -                               ydiv) * req->fb->pitches[i];
> -                     offset += ((x_offset + req->src_x + patched_src_w - 1) /
> -                                xdiv) * req->bpp[i];
> -                     req->xstride[i] = ((((patched_src_w - 1) / xdiv) - 1) *
> -                                        req->bpp[i]) - req->fb->pitches[i];
> -                     req->pstride[i] = -2 * req->bpp[i];
> +                     offset = ((y_offset + state->src_y + patched_src_h - 1) 
> /
> +                               ydiv) * fb->pitches[i];
> +                     offset += ((x_offset + state->src_x + patched_src_w - 
> 1) /
> +                                xdiv) * state->bpp[i];
> +                     state->xstride[i] = ((((patched_src_w - 1) / xdiv) - 1) 
> *
> +                                        state->bpp[i]) - fb->pitches[i];
> +                     state->pstride[i] = -2 * state->bpp[i];
>                       break;
>               case BIT(DRM_ROTATE_270):
> -                     offset = ((y_offset + req->src_y) / ydiv) *
> -                              req->fb->pitches[i];
> -                     offset += ((x_offset + req->src_x + patched_src_h - 1) /
> -                                xdiv) * req->bpp[i];
> -                     req->xstride[i] = -(((patched_src_w - 1) / ydiv) *
> -                                         req->fb->pitches[i]) -
> -                                       (2 * req->bpp[i]);
> -                     req->pstride[i] = req->fb->pitches[i] - req->bpp[i];
> +                     offset = ((y_offset + state->src_y) / ydiv) *
> +                              fb->pitches[i];
> +                     offset += ((x_offset + state->src_x + patched_src_h - 
> 1) /
> +                                xdiv) * state->bpp[i];
> +                     state->xstride[i] = -(((patched_src_w - 1) / ydiv) *
> +                                         fb->pitches[i]) -
> +                                       (2 * state->bpp[i]);
> +                     state->pstride[i] = fb->pitches[i] - state->bpp[i];
>                       break;
>               case BIT(DRM_ROTATE_0):
>               default:
> -                     offset = ((y_offset + req->src_y) / ydiv) *
> -                              req->fb->pitches[i];
> -                     offset += ((x_offset + req->src_x) / xdiv) *
> -                               req->bpp[i];
> -                     req->xstride[i] = req->fb->pitches[i] -
> +                     offset = ((y_offset + state->src_y) / ydiv) *
> +                              fb->pitches[i];
> +                     offset += ((x_offset + state->src_x) / xdiv) *
> +                               state->bpp[i];
> +                     state->xstride[i] = fb->pitches[i] -
>                                         ((patched_src_w / xdiv) *
> -                                        req->bpp[i]);
> -                     req->pstride[i] = 0;
> +                                        state->bpp[i]);
> +                     state->pstride[i] = 0;
>                       break;
>               }
>  
> -             req->offsets[i] = offset + req->fb->offsets[i];
> +             state->offsets[i] = offset + fb->offsets[i];
>       }
>  
> -     req->src_w = patched_src_w;
> -     req->src_h = patched_src_h;
> -     req->crtc_w = patched_crtc_w;
> -     req->crtc_h = patched_crtc_h;
> +     state->src_w = patched_src_w;
> +     state->src_h = patched_src_h;
> +     state->crtc_w = patched_crtc_w;
> +     state->crtc_h = patched_crtc_h;
>  
> -     return atmel_hlcdc_plane_check_update_req(p, req, mode);
> -}
> +     if (!layout->size &&
> +         (mode->hdisplay != state->crtc_w ||
> +          mode->vdisplay != state->crtc_h))
> +             return -EINVAL;
>  
> -int atmel_hlcdc_plane_apply_update_req(struct drm_plane *p,
> -                             struct atmel_hlcdc_plane_update_req *req)
> -{
> -     struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
> -     int ret;
> +     if (plane->layer.desc->max_height &&
> +         state->crtc_h > plane->layer.desc->max_height)
> +             return -EINVAL;
>  
> -     ret = atmel_hlcdc_layer_update_start(&plane->layer);
> -     if (ret)
> -             return ret;
> +     if (plane->layer.desc->max_width &&
> +         state->crtc_w > plane->layer.desc->max_width)
> +             return -EINVAL;
>  
> -     atmel_hlcdc_plane_update_pos_and_size(plane, req);
> -     atmel_hlcdc_plane_update_general_settings(plane, req);
> -     atmel_hlcdc_plane_update_format(plane, req);
> -     atmel_hlcdc_plane_update_buffers(plane, req);
> +     if ((state->crtc_h != state->src_h || state->crtc_w != state->src_w) &&
> +         (!layout->memsize ||
> +          atmel_hlcdc_format_embeds_alpha(state->base.fb->pixel_format)))
> +             return -EINVAL;
>  
> -     atmel_hlcdc_layer_update_commit(&plane->layer);
> +     if (state->crtc_x < 0 || state->crtc_y < 0)
> +             return -EINVAL;
> +
> +     if (state->crtc_w + state->crtc_x > mode->hdisplay ||
> +         state->crtc_h + state->crtc_y > mode->vdisplay)
> +             return -EINVAL;
>  
>       return 0;
>  }
>  
> -int atmel_hlcdc_plane_update_with_mode(struct drm_plane *p,
> -                                    struct drm_crtc *crtc,
> -                                    struct drm_framebuffer *fb,
> -                                    int crtc_x, int crtc_y,
> -                                    unsigned int crtc_w,
> -                                    unsigned int crtc_h,
> -                                    uint32_t src_x, uint32_t src_y,
> -                                    uint32_t src_w, uint32_t src_h,
> -                                    const struct drm_display_mode *mode)
> +static int atmel_hlcdc_plane_prepare_fb(struct drm_plane *p,
> +                                     struct drm_framebuffer *fb)
>  {
>       struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
> -     struct atmel_hlcdc_plane_update_req req;
> -     int ret = 0;
> -
> -     memset(&req, 0, sizeof(req));
> -     req.crtc_x = crtc_x;
> -     req.crtc_y = crtc_y;
> -     req.crtc_w = crtc_w;
> -     req.crtc_h = crtc_h;
> -     req.src_x = src_x;
> -     req.src_y = src_y;
> -     req.src_w = src_w;
> -     req.src_h = src_h;
> -     req.fb = fb;
> -
> -     ret = atmel_hlcdc_plane_prepare_update_req(&plane->base, &req, mode);
> -     if (ret)
> -             return ret;
>  
> -     if (!req.crtc_h || !req.crtc_w)
> -             return atmel_hlcdc_layer_disable(&plane->layer);
> +     return atmel_hlcdc_layer_update_start(&plane->layer);
> +}
> +
> +static void atmel_hlcdc_plane_cleanup_fb(struct drm_plane *p,
> +                                      struct drm_framebuffer *fb)
> +{
> +     struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
>  
> -     return atmel_hlcdc_plane_apply_update_req(&plane->base, &req);
> +     atmel_hlcdc_layer_update_rollback(&plane->layer);
>  }
>  
> -static int atmel_hlcdc_plane_update(struct drm_plane *p,
> -                                 struct drm_crtc *crtc,
> -                                 struct drm_framebuffer *fb,
> -                                 int crtc_x, int crtc_y,
> -                                 unsigned int crtc_w, unsigned int crtc_h,
> -                                 uint32_t src_x, uint32_t src_y,
> -                                 uint32_t src_w, uint32_t src_h)
> +static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p,
> +                                         struct drm_plane_state *old_s)
>  {
> -     return atmel_hlcdc_plane_update_with_mode(p, crtc, fb, crtc_x, crtc_y,
> -                                               crtc_w, crtc_h, src_x, src_y,
> -                                               src_w, src_h, &crtc->hwmode);
> +     struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
> +     struct atmel_hlcdc_plane_state *state =
> +                     drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
> +
> +     if (!p->state->crtc || !p->state->fb)
> +             return;
> +
> +     atmel_hlcdc_plane_update_pos_and_size(plane, state);
> +     atmel_hlcdc_plane_update_general_settings(plane, state);
> +     atmel_hlcdc_plane_update_format(plane, state);
> +     atmel_hlcdc_plane_update_buffers(plane, state);
> +
> +     atmel_hlcdc_layer_update_commit(&plane->layer);
>  }
>  
> -static int atmel_hlcdc_plane_disable(struct drm_plane *p)
> +static void atmel_hlcdc_plane_atomic_disable(struct drm_plane *p,
> +                                          struct drm_plane_state *old_state)
>  {
>       struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
>  
> -     return atmel_hlcdc_layer_disable(&plane->layer);
> +     atmel_hlcdc_layer_disable(&plane->layer);
>  }
>  
>  static void atmel_hlcdc_plane_destroy(struct drm_plane *p)
> @@ -635,38 +661,36 @@ static void atmel_hlcdc_plane_destroy(struct drm_plane 
> *p)
>       devm_kfree(p->dev->dev, plane);
>  }
>  
> -static int atmel_hlcdc_plane_set_alpha(struct atmel_hlcdc_plane *plane,
> -                                    u8 alpha)
> +static int atmel_hlcdc_plane_atomic_set_property(struct drm_plane *p,
> +                                              struct drm_plane_state *s,
> +                                              struct drm_property *property,
> +                                              uint64_t val)
>  {
> -     atmel_hlcdc_layer_update_start(&plane->layer);
> -     atmel_hlcdc_layer_update_cfg(&plane->layer,
> -                                  plane->layer.desc->layout.general_config,
> -                                  ATMEL_HLCDC_LAYER_GA_MASK,
> -                                  alpha << ATMEL_HLCDC_LAYER_GA_SHIFT);
> -     atmel_hlcdc_layer_update_commit(&plane->layer);
> -
> -     return 0;
> -}
> +     struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
> +     struct atmel_hlcdc_plane_properties *props = plane->properties;
> +     struct atmel_hlcdc_plane_state *state =
> +                     drm_plane_state_to_atmel_hlcdc_plane_state(s);
>  
> -static int atmel_hlcdc_plane_set_rotation(struct atmel_hlcdc_plane *plane,
> -                                       unsigned int rotation)
> -{
> -     plane->rotation = rotation;
> +     if (property == props->alpha)
> +             state->alpha = val;
> +     else
> +             return -EINVAL;
>  
>       return 0;
>  }
>  
> -static int atmel_hlcdc_plane_set_property(struct drm_plane *p,
> -                                       struct drm_property *property,
> -                                       uint64_t value)
> +static int atmel_hlcdc_plane_atomic_get_property(struct drm_plane *p,
> +                                     const struct drm_plane_state *s,
> +                                     struct drm_property *property,
> +                                     uint64_t *val)
>  {
>       struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
>       struct atmel_hlcdc_plane_properties *props = plane->properties;
> +     const struct atmel_hlcdc_plane_state *state =
> +             container_of(s, const struct atmel_hlcdc_plane_state, base);
>  
>       if (property == props->alpha)
> -             atmel_hlcdc_plane_set_alpha(plane, value);
> -     else if (property == props->rotation)
> -             atmel_hlcdc_plane_set_rotation(plane, value);
> +             *val = state->alpha;
>       else
>               return -EINVAL;
>  
> @@ -694,8 +718,8 @@ static void atmel_hlcdc_plane_init_properties(struct 
> atmel_hlcdc_plane *plane,
>  
>       if (desc->layout.xstride && desc->layout.pstride)
>               drm_object_attach_property(&plane->base.base,
> -                                        props->rotation,
> -                                        BIT(DRM_ROTATE_0));
> +                             plane->base.dev->mode_config.rotation_property,
> +                             BIT(DRM_ROTATE_0));
>  
>       if (desc->layout.csc) {
>               /*
> @@ -717,11 +741,75 @@ static void atmel_hlcdc_plane_init_properties(struct 
> atmel_hlcdc_plane *plane,
>       }
>  }
>  
> +static struct drm_plane_helper_funcs atmel_hlcdc_layer_plane_helper_funcs = {
> +     .prepare_fb = atmel_hlcdc_plane_prepare_fb,
> +     .cleanup_fb = atmel_hlcdc_plane_cleanup_fb,
> +     .atomic_check = atmel_hlcdc_plane_atomic_check,
> +     .atomic_update = atmel_hlcdc_plane_atomic_update,
> +     .atomic_disable = atmel_hlcdc_plane_atomic_disable,
> +};
> +
> +static void atmel_hlcdc_plane_reset(struct drm_plane *p)
> +{
> +     struct atmel_hlcdc_plane_state *state;
> +
> +     if (p->state) {
> +             state = drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
> +
> +             if (state->base.fb)
> +                     drm_framebuffer_unreference(state->base.fb);
> +
> +             kfree(state);
> +             p->state = NULL;
> +     }
> +
> +     state = kzalloc(sizeof(*state), GFP_KERNEL);
> +     if (state) {
> +             state->alpha = 255;
> +             p->state = &state->base;
> +             p->state->plane = p;
> +     }
> +}
> +
> +static struct drm_plane_state *
> +atmel_hlcdc_plane_atomic_duplicate_state(struct drm_plane *p)
> +{
> +     struct atmel_hlcdc_plane_state *state =
> +                     drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
> +     struct atmel_hlcdc_plane_state *copy;
> +
> +     copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
> +     if (!copy)
> +             return NULL;
> +
> +     if (copy->base.fb)
> +             drm_framebuffer_reference(copy->base.fb);
> +
> +     return &copy->base;
> +}
> +
> +static void atmel_hlcdc_plane_atomic_destroy_state(struct drm_plane *plane,
> +                                                struct drm_plane_state *s)
> +{
> +     struct atmel_hlcdc_plane_state *state =
> +                     drm_plane_state_to_atmel_hlcdc_plane_state(s);
> +
> +     if (s->fb)
> +             drm_framebuffer_unreference(s->fb);
> +
> +     kfree(state);
> +}
> +
>  static struct drm_plane_funcs layer_plane_funcs = {
> -     .update_plane = atmel_hlcdc_plane_update,
> -     .disable_plane = atmel_hlcdc_plane_disable,
> -     .set_property = atmel_hlcdc_plane_set_property,
> +     .update_plane = drm_atomic_helper_update_plane,
> +     .disable_plane = drm_atomic_helper_disable_plane,
> +     .set_property = drm_atomic_helper_plane_set_property,
>       .destroy = atmel_hlcdc_plane_destroy,
> +     .reset = atmel_hlcdc_plane_reset,
> +     .atomic_duplicate_state = atmel_hlcdc_plane_atomic_duplicate_state,
> +     .atomic_destroy_state = atmel_hlcdc_plane_atomic_destroy_state,
> +     .atomic_set_property = atmel_hlcdc_plane_atomic_set_property,
> +     .atomic_get_property = atmel_hlcdc_plane_atomic_get_property,
>  };
>  
>  static struct atmel_hlcdc_plane *
> @@ -755,6 +843,9 @@ atmel_hlcdc_plane_create(struct drm_device *dev,
>       if (ret)
>               return ERR_PTR(ret);
>  
> +     drm_plane_helper_add(&plane->base,
> +                          &atmel_hlcdc_layer_plane_helper_funcs);
> +
>       /* Set default property values*/
>       atmel_hlcdc_plane_init_properties(plane, desc, props);
>  
> @@ -774,12 +865,13 @@ atmel_hlcdc_plane_create_properties(struct drm_device 
> *dev)
>       if (!props->alpha)
>               return ERR_PTR(-ENOMEM);
>  
> -     props->rotation = drm_mode_create_rotation_property(dev,
> -                                             BIT(DRM_ROTATE_0) |
> -                                             BIT(DRM_ROTATE_90) |
> -                                             BIT(DRM_ROTATE_180) |
> -                                             BIT(DRM_ROTATE_270));
> -     if (!props->rotation)
> +     dev->mode_config.rotation_property =
> +                     drm_mode_create_rotation_property(dev,
> +                                                       BIT(DRM_ROTATE_0) |
> +                                                       BIT(DRM_ROTATE_90) |
> +                                                       BIT(DRM_ROTATE_180) |
> +                                                       BIT(DRM_ROTATE_270));
> +     if (!dev->mode_config.rotation_property)
>               return ERR_PTR(-ENOMEM);
>  
>       return props;
> -- 
> 1.9.1
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch

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