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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/rcar-du/rcar_du_plane.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/rcar-du/rcar_du_plane.c')
-rw-r--r--kernel/drivers/gpu/drm/rcar-du/rcar_du_plane.c460
1 files changed, 460 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/kernel/drivers/gpu/drm/rcar-du/rcar_du_plane.c
new file mode 100644
index 000000000..210e5c3fd
--- /dev/null
+++ b/kernel/drivers/gpu/drm/rcar-du/rcar_du_plane.c
@@ -0,0 +1,460 @@
+/*
+ * rcar_du_plane.c -- R-Car Display Unit Planes
+ *
+ * Copyright (C) 2013-2014 Renesas Electronics Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <drm/drmP.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_plane_helper.h>
+
+#include "rcar_du_drv.h"
+#include "rcar_du_kms.h"
+#include "rcar_du_plane.h"
+#include "rcar_du_regs.h"
+
+#define RCAR_DU_COLORKEY_NONE (0 << 24)
+#define RCAR_DU_COLORKEY_SOURCE (1 << 24)
+#define RCAR_DU_COLORKEY_MASK (1 << 24)
+
+static u32 rcar_du_plane_read(struct rcar_du_group *rgrp,
+ unsigned int index, u32 reg)
+{
+ return rcar_du_read(rgrp->dev,
+ rgrp->mmio_offset + index * PLANE_OFF + reg);
+}
+
+static void rcar_du_plane_write(struct rcar_du_group *rgrp,
+ unsigned int index, u32 reg, u32 data)
+{
+ rcar_du_write(rgrp->dev, rgrp->mmio_offset + index * PLANE_OFF + reg,
+ data);
+}
+
+static void rcar_du_plane_setup_fb(struct rcar_du_plane *plane)
+{
+ struct rcar_du_plane_state *state =
+ to_rcar_du_plane_state(plane->plane.state);
+ struct drm_framebuffer *fb = plane->plane.state->fb;
+ struct rcar_du_group *rgrp = plane->group;
+ unsigned int src_x = state->state.src_x >> 16;
+ unsigned int src_y = state->state.src_y >> 16;
+ unsigned int index = state->hwindex;
+ struct drm_gem_cma_object *gem;
+ bool interlaced;
+ u32 mwr;
+
+ interlaced = state->state.crtc->state->adjusted_mode.flags
+ & DRM_MODE_FLAG_INTERLACE;
+
+ /* Memory pitch (expressed in pixels). Must be doubled for interlaced
+ * operation with 32bpp formats.
+ */
+ if (state->format->planes == 2)
+ mwr = fb->pitches[0];
+ else
+ mwr = fb->pitches[0] * 8 / state->format->bpp;
+
+ if (interlaced && state->format->bpp == 32)
+ mwr *= 2;
+
+ rcar_du_plane_write(rgrp, index, PnMWR, mwr);
+
+ /* The Y position is expressed in raster line units and must be doubled
+ * for 32bpp formats, according to the R8A7790 datasheet. No mention of
+ * doubling the Y position is found in the R8A7779 datasheet, but the
+ * rule seems to apply there as well.
+ *
+ * Despite not being documented, doubling seem not to be needed when
+ * operating in interlaced mode.
+ *
+ * Similarly, for the second plane, NV12 and NV21 formats seem to
+ * require a halved Y position value, in both progressive and interlaced
+ * modes.
+ */
+ rcar_du_plane_write(rgrp, index, PnSPXR, src_x);
+ rcar_du_plane_write(rgrp, index, PnSPYR, src_y *
+ (!interlaced && state->format->bpp == 32 ? 2 : 1));
+
+ gem = drm_fb_cma_get_gem_obj(fb, 0);
+ rcar_du_plane_write(rgrp, index, PnDSA0R, gem->paddr + fb->offsets[0]);
+
+ if (state->format->planes == 2) {
+ index = (index + 1) % 8;
+
+ rcar_du_plane_write(rgrp, index, PnMWR, fb->pitches[0]);
+
+ rcar_du_plane_write(rgrp, index, PnSPXR, src_x);
+ rcar_du_plane_write(rgrp, index, PnSPYR, src_y *
+ (state->format->bpp == 16 ? 2 : 1) / 2);
+
+ gem = drm_fb_cma_get_gem_obj(fb, 1);
+ rcar_du_plane_write(rgrp, index, PnDSA0R,
+ gem->paddr + fb->offsets[1]);
+ }
+}
+
+static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
+ unsigned int index)
+{
+ struct rcar_du_plane_state *state =
+ to_rcar_du_plane_state(plane->plane.state);
+ struct rcar_du_group *rgrp = plane->group;
+ u32 colorkey;
+ u32 pnmr;
+
+ /* The PnALPHAR register controls alpha-blending in 16bpp formats
+ * (ARGB1555 and XRGB1555).
+ *
+ * For ARGB, set the alpha value to 0, and enable alpha-blending when
+ * the A bit is 0. This maps A=0 to alpha=0 and A=1 to alpha=255.
+ *
+ * For XRGB, set the alpha value to the plane-wide alpha value and
+ * enable alpha-blending regardless of the X bit value.
+ */
+ if (state->format->fourcc != DRM_FORMAT_XRGB1555)
+ rcar_du_plane_write(rgrp, index, PnALPHAR, PnALPHAR_ABIT_0);
+ else
+ rcar_du_plane_write(rgrp, index, PnALPHAR,
+ PnALPHAR_ABIT_X | state->alpha);
+
+ pnmr = PnMR_BM_MD | state->format->pnmr;
+
+ /* Disable color keying when requested. YUV formats have the
+ * PnMR_SPIM_TP_OFF bit set in their pnmr field, disabling color keying
+ * automatically.
+ */
+ if ((state->colorkey & RCAR_DU_COLORKEY_MASK) == RCAR_DU_COLORKEY_NONE)
+ pnmr |= PnMR_SPIM_TP_OFF;
+
+ /* For packed YUV formats we need to select the U/V order. */
+ if (state->format->fourcc == DRM_FORMAT_YUYV)
+ pnmr |= PnMR_YCDF_YUYV;
+
+ rcar_du_plane_write(rgrp, index, PnMR, pnmr);
+
+ switch (state->format->fourcc) {
+ case DRM_FORMAT_RGB565:
+ colorkey = ((state->colorkey & 0xf80000) >> 8)
+ | ((state->colorkey & 0x00fc00) >> 5)
+ | ((state->colorkey & 0x0000f8) >> 3);
+ rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
+ break;
+
+ case DRM_FORMAT_ARGB1555:
+ case DRM_FORMAT_XRGB1555:
+ colorkey = ((state->colorkey & 0xf80000) >> 9)
+ | ((state->colorkey & 0x00f800) >> 6)
+ | ((state->colorkey & 0x0000f8) >> 3);
+ rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
+ break;
+
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ARGB8888:
+ rcar_du_plane_write(rgrp, index, PnTC3R,
+ PnTC3R_CODE | (state->colorkey & 0xffffff));
+ break;
+ }
+}
+
+static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
+ unsigned int index)
+{
+ struct rcar_du_plane_state *state =
+ to_rcar_du_plane_state(plane->plane.state);
+ struct rcar_du_group *rgrp = plane->group;
+ u32 ddcr2 = PnDDCR2_CODE;
+ u32 ddcr4;
+
+ /* Data format
+ *
+ * The data format is selected by the DDDF field in PnMR and the EDF
+ * field in DDCR4.
+ */
+ ddcr4 = rcar_du_plane_read(rgrp, index, PnDDCR4);
+ ddcr4 &= ~PnDDCR4_EDF_MASK;
+ ddcr4 |= state->format->edf | PnDDCR4_CODE;
+
+ rcar_du_plane_setup_mode(plane, index);
+
+ if (state->format->planes == 2) {
+ if (state->hwindex != index) {
+ if (state->format->fourcc == DRM_FORMAT_NV12 ||
+ state->format->fourcc == DRM_FORMAT_NV21)
+ ddcr2 |= PnDDCR2_Y420;
+
+ if (state->format->fourcc == DRM_FORMAT_NV21)
+ ddcr2 |= PnDDCR2_NV21;
+
+ ddcr2 |= PnDDCR2_DIVU;
+ } else {
+ ddcr2 |= PnDDCR2_DIVY;
+ }
+ }
+
+ rcar_du_plane_write(rgrp, index, PnDDCR2, ddcr2);
+ rcar_du_plane_write(rgrp, index, PnDDCR4, ddcr4);
+
+ /* Destination position and size */
+ rcar_du_plane_write(rgrp, index, PnDSXR, plane->plane.state->crtc_w);
+ rcar_du_plane_write(rgrp, index, PnDSYR, plane->plane.state->crtc_h);
+ rcar_du_plane_write(rgrp, index, PnDPXR, plane->plane.state->crtc_x);
+ rcar_du_plane_write(rgrp, index, PnDPYR, plane->plane.state->crtc_y);
+
+ /* Wrap-around and blinking, disabled */
+ rcar_du_plane_write(rgrp, index, PnWASPR, 0);
+ rcar_du_plane_write(rgrp, index, PnWAMWR, 4095);
+ rcar_du_plane_write(rgrp, index, PnBTR, 0);
+ rcar_du_plane_write(rgrp, index, PnMLR, 0);
+}
+
+void rcar_du_plane_setup(struct rcar_du_plane *plane)
+{
+ struct rcar_du_plane_state *state =
+ to_rcar_du_plane_state(plane->plane.state);
+
+ __rcar_du_plane_setup(plane, state->hwindex);
+ if (state->format->planes == 2)
+ __rcar_du_plane_setup(plane, (state->hwindex + 1) % 8);
+
+ rcar_du_plane_setup_fb(plane);
+}
+
+static int rcar_du_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ struct rcar_du_plane_state *rstate = to_rcar_du_plane_state(state);
+ struct rcar_du_plane *rplane = to_rcar_plane(plane);
+ struct rcar_du_device *rcdu = rplane->group->dev;
+
+ if (!state->fb || !state->crtc) {
+ rstate->format = NULL;
+ return 0;
+ }
+
+ if (state->src_w >> 16 != state->crtc_w ||
+ state->src_h >> 16 != state->crtc_h) {
+ dev_dbg(rcdu->dev, "%s: scaling not supported\n", __func__);
+ return -EINVAL;
+ }
+
+ rstate->format = rcar_du_format_info(state->fb->pixel_format);
+ if (rstate->format == NULL) {
+ dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__,
+ state->fb->pixel_format);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void rcar_du_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct rcar_du_plane *rplane = to_rcar_plane(plane);
+
+ if (plane->state->crtc)
+ rcar_du_plane_setup(rplane);
+}
+
+static const struct drm_plane_helper_funcs rcar_du_plane_helper_funcs = {
+ .atomic_check = rcar_du_plane_atomic_check,
+ .atomic_update = rcar_du_plane_atomic_update,
+};
+
+static void rcar_du_plane_reset(struct drm_plane *plane)
+{
+ struct rcar_du_plane_state *state;
+
+ if (plane->state && plane->state->fb)
+ drm_framebuffer_unreference(plane->state->fb);
+
+ kfree(plane->state);
+ plane->state = NULL;
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (state == NULL)
+ return;
+
+ state->hwindex = -1;
+ state->alpha = 255;
+ state->colorkey = RCAR_DU_COLORKEY_NONE;
+ state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
+
+ plane->state = &state->state;
+ plane->state->plane = plane;
+}
+
+static struct drm_plane_state *
+rcar_du_plane_atomic_duplicate_state(struct drm_plane *plane)
+{
+ struct rcar_du_plane_state *state;
+ struct rcar_du_plane_state *copy;
+
+ state = to_rcar_du_plane_state(plane->state);
+ copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
+ if (copy == NULL)
+ return NULL;
+
+ if (copy->state.fb)
+ drm_framebuffer_reference(copy->state.fb);
+
+ return &copy->state;
+}
+
+static void rcar_du_plane_atomic_destroy_state(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ if (state->fb)
+ drm_framebuffer_unreference(state->fb);
+
+ kfree(to_rcar_du_plane_state(state));
+}
+
+static int rcar_du_plane_atomic_set_property(struct drm_plane *plane,
+ struct drm_plane_state *state,
+ struct drm_property *property,
+ uint64_t val)
+{
+ struct rcar_du_plane_state *rstate = to_rcar_du_plane_state(state);
+ struct rcar_du_plane *rplane = to_rcar_plane(plane);
+ struct rcar_du_group *rgrp = rplane->group;
+
+ if (property == rgrp->planes.alpha)
+ rstate->alpha = val;
+ else if (property == rgrp->planes.colorkey)
+ rstate->colorkey = val;
+ else if (property == rgrp->planes.zpos)
+ rstate->zpos = val;
+ else
+ return -EINVAL;
+
+ return 0;
+}
+
+static int rcar_du_plane_atomic_get_property(struct drm_plane *plane,
+ const struct drm_plane_state *state, struct drm_property *property,
+ uint64_t *val)
+{
+ const struct rcar_du_plane_state *rstate =
+ container_of(state, const struct rcar_du_plane_state, state);
+ struct rcar_du_plane *rplane = to_rcar_plane(plane);
+ struct rcar_du_group *rgrp = rplane->group;
+
+ if (property == rgrp->planes.alpha)
+ *val = rstate->alpha;
+ else if (property == rgrp->planes.colorkey)
+ *val = rstate->colorkey;
+ else if (property == rgrp->planes.zpos)
+ *val = rstate->zpos;
+ else
+ return -EINVAL;
+
+ return 0;
+}
+
+static const struct drm_plane_funcs rcar_du_plane_funcs = {
+ .update_plane = drm_atomic_helper_update_plane,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .reset = rcar_du_plane_reset,
+ .set_property = drm_atomic_helper_plane_set_property,
+ .destroy = drm_plane_cleanup,
+ .atomic_duplicate_state = rcar_du_plane_atomic_duplicate_state,
+ .atomic_destroy_state = rcar_du_plane_atomic_destroy_state,
+ .atomic_set_property = rcar_du_plane_atomic_set_property,
+ .atomic_get_property = rcar_du_plane_atomic_get_property,
+};
+
+static const uint32_t formats[] = {
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_ARGB1555,
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_ARGB8888,
+ DRM_FORMAT_UYVY,
+ DRM_FORMAT_YUYV,
+ DRM_FORMAT_NV12,
+ DRM_FORMAT_NV21,
+ DRM_FORMAT_NV16,
+};
+
+int rcar_du_planes_init(struct rcar_du_group *rgrp)
+{
+ struct rcar_du_planes *planes = &rgrp->planes;
+ struct rcar_du_device *rcdu = rgrp->dev;
+ unsigned int num_planes;
+ unsigned int num_crtcs;
+ unsigned int crtcs;
+ unsigned int i;
+ int ret;
+
+ planes->alpha =
+ drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
+ if (planes->alpha == NULL)
+ return -ENOMEM;
+
+ /* The color key is expressed as an RGB888 triplet stored in a 32-bit
+ * integer in XRGB8888 format. Bit 24 is used as a flag to disable (0)
+ * or enable source color keying (1).
+ */
+ planes->colorkey =
+ drm_property_create_range(rcdu->ddev, 0, "colorkey",
+ 0, 0x01ffffff);
+ if (planes->colorkey == NULL)
+ return -ENOMEM;
+
+ planes->zpos =
+ drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7);
+ if (planes->zpos == NULL)
+ return -ENOMEM;
+
+ /* Create one primary plane per in this group CRTC and seven overlay
+ * planes.
+ */
+ num_crtcs = min(rcdu->num_crtcs - 2 * rgrp->index, 2U);
+ num_planes = num_crtcs + 7;
+
+ crtcs = ((1 << rcdu->num_crtcs) - 1) & (3 << (2 * rgrp->index));
+
+ for (i = 0; i < num_planes; ++i) {
+ enum drm_plane_type type = i < num_crtcs
+ ? DRM_PLANE_TYPE_PRIMARY
+ : DRM_PLANE_TYPE_OVERLAY;
+ struct rcar_du_plane *plane = &planes->planes[i];
+
+ plane->group = rgrp;
+
+ ret = drm_universal_plane_init(rcdu->ddev, &plane->plane, crtcs,
+ &rcar_du_plane_funcs, formats,
+ ARRAY_SIZE(formats), type);
+ if (ret < 0)
+ return ret;
+
+ drm_plane_helper_add(&plane->plane,
+ &rcar_du_plane_helper_funcs);
+
+ if (type == DRM_PLANE_TYPE_PRIMARY)
+ continue;
+
+ drm_object_attach_property(&plane->plane.base,
+ planes->alpha, 255);
+ drm_object_attach_property(&plane->plane.base,
+ planes->colorkey,
+ RCAR_DU_COLORKEY_NONE);
+ drm_object_attach_property(&plane->plane.base,
+ planes->zpos, 1);
+ }
+
+ return 0;
+}