1 files changed, 312 insertions, 0 deletions

diff --git a/drivers/gpu/drm/armada/armada_plane.c b/drivers/gpu/drm/armada/armada_plane.c
new file mode 100644
index 000000000..cc47c032d
--- /dev/null
+++ b/drivers/gpu/drm/armada/armada_plane.c
@@ -0,0 +1,312 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Russell King
+ *  Rewritten from the dovefb driver, and Armada510 manuals.
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_plane_helper.h>
+
+#include "armada_crtc.h"
+#include "armada_drm.h"
+#include "armada_fb.h"
+#include "armada_gem.h"
+#include "armada_hw.h"
+#include "armada_plane.h"
+#include "armada_trace.h"
+
+static const uint32_t armada_primary_formats[] = {
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_VYUY,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_RGB888,
+	DRM_FORMAT_BGR888,
+	DRM_FORMAT_ARGB1555,
+	DRM_FORMAT_ABGR1555,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_BGR565,
+};
+
+void armada_drm_plane_calc(struct drm_plane_state *state, u32 addrs[2][3],
+	u16 pitches[3], bool interlaced)
+{
+	struct drm_framebuffer *fb = state->fb;
+	const struct drm_format_info *format = fb->format;
+	unsigned int num_planes = format->num_planes;
+	unsigned int x = state->src.x1 >> 16;
+	unsigned int y = state->src.y1 >> 16;
+	u32 addr = drm_fb_obj(fb)->dev_addr;
+	int i;
+
+	DRM_DEBUG_KMS("pitch %u x %d y %d bpp %d\n",
+		      fb->pitches[0], x, y, format->cpp[0] * 8);
+
+	if (num_planes > 3)
+		num_planes = 3;
+
+	addrs[0][0] = addr + fb->offsets[0] + y * fb->pitches[0] +
+		      x * format->cpp[0];
+	pitches[0] = fb->pitches[0];
+
+	y /= format->vsub;
+	x /= format->hsub;
+
+	for (i = 1; i < num_planes; i++) {
+		addrs[0][i] = addr + fb->offsets[i] + y * fb->pitches[i] +
+			      x * format->cpp[i];
+		pitches[i] = fb->pitches[i];
+	}
+	for (; i < 3; i++) {
+		addrs[0][i] = 0;
+		pitches[i] = 0;
+	}
+	if (interlaced) {
+		for (i = 0; i < 3; i++) {
+			addrs[1][i] = addrs[0][i] + pitches[i];
+			pitches[i] *= 2;
+		}
+	} else {
+		for (i = 0; i < 3; i++)
+			addrs[1][i] = addrs[0][i];
+	}
+}
+
+int armada_drm_plane_atomic_check(struct drm_plane *plane,
+	struct drm_atomic_state *state)
+{
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+										 plane);
+	struct armada_plane_state *st = to_armada_plane_state(new_plane_state);
+	struct drm_crtc *crtc = new_plane_state->crtc;
+	struct drm_crtc_state *crtc_state;
+	bool interlace;
+	int ret;
+
+	if (!new_plane_state->fb || WARN_ON(!new_plane_state->crtc)) {
+		new_plane_state->visible = false;
+		return 0;
+	}
+
+	if (state)
+		crtc_state = drm_atomic_get_existing_crtc_state(state,
+								crtc);
+	else
+		crtc_state = crtc->state;
+
+	ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
+						  0,
+						  INT_MAX, true, false);
+	if (ret)
+		return ret;
+
+	interlace = crtc_state->adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE;
+	if (interlace) {
+		if ((new_plane_state->dst.y1 | new_plane_state->dst.y2) & 1)
+			return -EINVAL;
+		st->src_hw = drm_rect_height(&new_plane_state->src) >> 17;
+		st->dst_yx = new_plane_state->dst.y1 >> 1;
+		st->dst_hw = drm_rect_height(&new_plane_state->dst) >> 1;
+	} else {
+		st->src_hw = drm_rect_height(&new_plane_state->src) >> 16;
+		st->dst_yx = new_plane_state->dst.y1;
+		st->dst_hw = drm_rect_height(&new_plane_state->dst);
+	}
+
+	st->src_hw <<= 16;
+	st->src_hw |= drm_rect_width(&new_plane_state->src) >> 16;
+	st->dst_yx <<= 16;
+	st->dst_yx |= new_plane_state->dst.x1 & 0x0000ffff;
+	st->dst_hw <<= 16;
+	st->dst_hw |= drm_rect_width(&new_plane_state->dst) & 0x0000ffff;
+
+	armada_drm_plane_calc(new_plane_state, st->addrs, st->pitches,
+			      interlace);
+	st->interlace = interlace;
+
+	return 0;
+}
+
+static void armada_drm_primary_plane_atomic_update(struct drm_plane *plane,
+	struct drm_atomic_state *state)
+{
+	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
+									   plane);
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
+	struct armada_crtc *dcrtc;
+	struct armada_regs *regs;
+	u32 cfg, cfg_mask, val;
+	unsigned int idx;
+
+	DRM_DEBUG_KMS("[PLANE:%d:%s]\n", plane->base.id, plane->name);
+
+	if (!new_state->fb || WARN_ON(!new_state->crtc))
+		return;
+
+	DRM_DEBUG_KMS("[PLANE:%d:%s] is on [CRTC:%d:%s] with [FB:%d] visible %u->%u\n",
+		plane->base.id, plane->name,
+		new_state->crtc->base.id, new_state->crtc->name,
+		new_state->fb->base.id,
+		old_state->visible, new_state->visible);
+
+	dcrtc = drm_to_armada_crtc(new_state->crtc);
+	regs = dcrtc->regs + dcrtc->regs_idx;
+
+	idx = 0;
+	if (!old_state->visible && new_state->visible) {
+		val = CFG_PDWN64x66;
+		if (drm_fb_to_armada_fb(new_state->fb)->fmt > CFG_420)
+			val |= CFG_PDWN256x24;
+		armada_reg_queue_mod(regs, idx, 0, val, LCD_SPU_SRAM_PARA1);
+	}
+	val = armada_src_hw(new_state);
+	if (armada_src_hw(old_state) != val)
+		armada_reg_queue_set(regs, idx, val, LCD_SPU_GRA_HPXL_VLN);
+	val = armada_dst_yx(new_state);
+	if (armada_dst_yx(old_state) != val)
+		armada_reg_queue_set(regs, idx, val, LCD_SPU_GRA_OVSA_HPXL_VLN);
+	val = armada_dst_hw(new_state);
+	if (armada_dst_hw(old_state) != val)
+		armada_reg_queue_set(regs, idx, val, LCD_SPU_GZM_HPXL_VLN);
+	if (old_state->src.x1 != new_state->src.x1 ||
+	    old_state->src.y1 != new_state->src.y1 ||
+	    old_state->fb != new_state->fb ||
+	    new_state->crtc->state->mode_changed) {
+		armada_reg_queue_set(regs, idx, armada_addr(new_state, 0, 0),
+				     LCD_CFG_GRA_START_ADDR0);
+		armada_reg_queue_set(regs, idx, armada_addr(new_state, 1, 0),
+				     LCD_CFG_GRA_START_ADDR1);
+		armada_reg_queue_mod(regs, idx, armada_pitch(new_state, 0),
+				     0xffff,
+				     LCD_CFG_GRA_PITCH);
+	}
+	if (old_state->fb != new_state->fb ||
+	    new_state->crtc->state->mode_changed) {
+		cfg = CFG_GRA_FMT(drm_fb_to_armada_fb(new_state->fb)->fmt) |
+		      CFG_GRA_MOD(drm_fb_to_armada_fb(new_state->fb)->mod);
+		if (drm_fb_to_armada_fb(new_state->fb)->fmt > CFG_420)
+			cfg |= CFG_PALETTE_ENA;
+		if (new_state->visible)
+			cfg |= CFG_GRA_ENA;
+		if (to_armada_plane_state(new_state)->interlace)
+			cfg |= CFG_GRA_FTOGGLE;
+		cfg_mask = CFG_GRAFORMAT |
+			   CFG_GRA_MOD(CFG_SWAPRB | CFG_SWAPUV |
+				       CFG_SWAPYU | CFG_YUV2RGB) |
+			   CFG_PALETTE_ENA | CFG_GRA_FTOGGLE |
+			   CFG_GRA_ENA;
+	} else if (old_state->visible != new_state->visible) {
+		cfg = new_state->visible ? CFG_GRA_ENA : 0;
+		cfg_mask = CFG_GRA_ENA;
+	} else {
+		cfg = cfg_mask = 0;
+	}
+	if (drm_rect_width(&old_state->src) != drm_rect_width(&new_state->src) ||
+	    drm_rect_width(&old_state->dst) != drm_rect_width(&new_state->dst)) {
+		cfg_mask |= CFG_GRA_HSMOOTH;
+		if (drm_rect_width(&new_state->src) >> 16 !=
+		    drm_rect_width(&new_state->dst))
+			cfg |= CFG_GRA_HSMOOTH;
+	}
+
+	if (cfg_mask)
+		armada_reg_queue_mod(regs, idx, cfg, cfg_mask,
+				     LCD_SPU_DMA_CTRL0);
+
+	dcrtc->regs_idx += idx;
+}
+
+static void armada_drm_primary_plane_atomic_disable(struct drm_plane *plane,
+	struct drm_atomic_state *state)
+{
+	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
+									   plane);
+	struct armada_crtc *dcrtc;
+	struct armada_regs *regs;
+	unsigned int idx = 0;
+
+	DRM_DEBUG_KMS("[PLANE:%d:%s]\n", plane->base.id, plane->name);
+
+	if (!old_state->crtc)
+		return;
+
+	DRM_DEBUG_KMS("[PLANE:%d:%s] was on [CRTC:%d:%s] with [FB:%d]\n",
+		plane->base.id, plane->name,
+		old_state->crtc->base.id, old_state->crtc->name,
+		old_state->fb->base.id);
+
+	dcrtc = drm_to_armada_crtc(old_state->crtc);
+	regs = dcrtc->regs + dcrtc->regs_idx;
+
+	/* Disable plane and power down most RAMs and FIFOs */
+	armada_reg_queue_mod(regs, idx, 0, CFG_GRA_ENA, LCD_SPU_DMA_CTRL0);
+	armada_reg_queue_mod(regs, idx, CFG_PDWN256x32 | CFG_PDWN256x24 |
+			     CFG_PDWN32x32 | CFG_PDWN64x66,
+			     0, LCD_SPU_SRAM_PARA1);
+
+	dcrtc->regs_idx += idx;
+}
+
+static const struct drm_plane_helper_funcs armada_primary_plane_helper_funcs = {
+	.atomic_check	= armada_drm_plane_atomic_check,
+	.atomic_update	= armada_drm_primary_plane_atomic_update,
+	.atomic_disable	= armada_drm_primary_plane_atomic_disable,
+};
+
+void armada_plane_reset(struct drm_plane *plane)
+{
+	struct armada_plane_state *st;
+	if (plane->state)
+		__drm_atomic_helper_plane_destroy_state(plane->state);
+	kfree(plane->state);
+	st = kzalloc(sizeof(*st), GFP_KERNEL);
+	if (st)
+		__drm_atomic_helper_plane_reset(plane, &st->base);
+}
+
+struct drm_plane_state *armada_plane_duplicate_state(struct drm_plane *plane)
+{
+	struct armada_plane_state *st;
+
+	if (WARN_ON(!plane->state))
+		return NULL;
+
+	st = kmemdup(plane->state, sizeof(*st), GFP_KERNEL);
+	if (st)
+		__drm_atomic_helper_plane_duplicate_state(plane, &st->base);
+
+	return &st->base;
+}
+
+static const struct drm_plane_funcs armada_primary_plane_funcs = {
+	.update_plane	= drm_atomic_helper_update_plane,
+	.disable_plane	= drm_atomic_helper_disable_plane,
+	.destroy	= drm_plane_helper_destroy,
+	.reset		= armada_plane_reset,
+	.atomic_duplicate_state = armada_plane_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+};
+
+int armada_drm_primary_plane_init(struct drm_device *drm,
+	struct drm_plane *primary)
+{
+	int ret;
+
+	drm_plane_helper_add(primary, &armada_primary_plane_helper_funcs);
+
+	ret = drm_universal_plane_init(drm, primary, 0,
+				       &armada_primary_plane_funcs,
+				       armada_primary_formats,
+				       ARRAY_SIZE(armada_primary_formats),
+				       NULL,
+				       DRM_PLANE_TYPE_PRIMARY, NULL);
+
+	return ret;
+}