diff options
Diffstat (limited to 'drivers/gpu/drm/meson/meson_plane.c')
| -rw-r--r-- | drivers/gpu/drm/meson/meson_plane.c | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/drivers/gpu/drm/meson/meson_plane.c b/drivers/gpu/drm/meson/meson_plane.c new file mode 100644 index 000000000000..4942ca090b46 --- /dev/null +++ b/drivers/gpu/drm/meson/meson_plane.c @@ -0,0 +1,230 @@ +/* + * Copyright (C) 2016 BayLibre, SAS + * Author: Neil Armstrong <narmstrong@baylibre.com> + * Copyright (C) 2015 Amlogic, Inc. All rights reserved. + * Copyright (C) 2014 Endless Mobile + * + * 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. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + * + * Written by: + * Jasper St. Pierre <jstpierre@mecheye.net> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/platform_device.h> +#include <drm/drmP.h> +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_plane_helper.h> +#include <drm/drm_gem_cma_helper.h> +#include <drm/drm_fb_cma_helper.h> +#include <drm/drm_rect.h> + +#include "meson_plane.h" +#include "meson_vpp.h" +#include "meson_viu.h" +#include "meson_canvas.h" +#include "meson_registers.h" + +struct meson_plane { + struct drm_plane base; + struct meson_drm *priv; +}; +#define to_meson_plane(x) container_of(x, struct meson_plane, base) + +static int meson_plane_atomic_check(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct drm_crtc_state *crtc_state; + struct drm_rect clip = { 0, }; + + crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); + if (IS_ERR(crtc_state)) + return PTR_ERR(crtc_state); + + clip.x2 = crtc_state->mode.hdisplay; + clip.y2 = crtc_state->mode.vdisplay; + + return drm_plane_helper_check_state(state, &clip, + DRM_PLANE_HELPER_NO_SCALING, + DRM_PLANE_HELPER_NO_SCALING, + true, true); +} + +/* Takes a fixed 16.16 number and converts it to integer. */ +static inline int64_t fixed16_to_int(int64_t value) +{ + return value >> 16; +} + +static void meson_plane_atomic_update(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct meson_plane *meson_plane = to_meson_plane(plane); + struct drm_plane_state *state = plane->state; + struct drm_framebuffer *fb = state->fb; + struct meson_drm *priv = meson_plane->priv; + struct drm_gem_cma_object *gem; + struct drm_rect src = { + .x1 = (state->src_x), + .y1 = (state->src_y), + .x2 = (state->src_x + state->src_w), + .y2 = (state->src_y + state->src_h), + }; + struct drm_rect dest = { + .x1 = state->crtc_x, + .y1 = state->crtc_y, + .x2 = state->crtc_x + state->crtc_w, + .y2 = state->crtc_y + state->crtc_h, + }; + unsigned long flags; + + /* + * Update Coordinates + * Update Formats + * Update Buffer + * Enable Plane + */ + spin_lock_irqsave(&priv->drm->event_lock, flags); + + /* Enable OSD and BLK0, set max global alpha */ + priv->viu.osd1_ctrl_stat = OSD_ENABLE | + (0xFF << OSD_GLOBAL_ALPHA_SHIFT) | + OSD_BLK0_ENABLE; + + /* Set up BLK0 to point to the right canvas */ + priv->viu.osd1_blk0_cfg[0] = ((MESON_CANVAS_ID_OSD1 << OSD_CANVAS_SEL) | + OSD_ENDIANNESS_LE); + + /* On GXBB, Use the old non-HDR RGB2YUV converter */ + if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) + priv->viu.osd1_blk0_cfg[0] |= OSD_OUTPUT_COLOR_RGB; + + switch (fb->pixel_format) { + case DRM_FORMAT_XRGB8888: + /* For XRGB, replace the pixel's alpha by 0xFF */ + writel_bits_relaxed(OSD_REPLACE_EN, OSD_REPLACE_EN, + priv->io_base + _REG(VIU_OSD1_CTRL_STAT2)); + priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_32 | + OSD_COLOR_MATRIX_32_ARGB; + break; + case DRM_FORMAT_ARGB8888: + /* For ARGB, use the pixel's alpha */ + writel_bits_relaxed(OSD_REPLACE_EN, 0, + priv->io_base + _REG(VIU_OSD1_CTRL_STAT2)); + priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_32 | + OSD_COLOR_MATRIX_32_ARGB; + break; + case DRM_FORMAT_RGB888: + priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_24 | + OSD_COLOR_MATRIX_24_RGB; + break; + case DRM_FORMAT_RGB565: + priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_16 | + OSD_COLOR_MATRIX_16_RGB565; + break; + }; + + if (state->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) { + priv->viu.osd1_interlace = true; + + dest.y1 /= 2; + dest.y2 /= 2; + } else + priv->viu.osd1_interlace = false; + + /* + * The format of these registers is (x2 << 16 | x1), + * where x2 is exclusive. + * e.g. +30x1920 would be (1919 << 16) | 30 + */ + priv->viu.osd1_blk0_cfg[1] = ((fixed16_to_int(src.x2) - 1) << 16) | + fixed16_to_int(src.x1); + priv->viu.osd1_blk0_cfg[2] = ((fixed16_to_int(src.y2) - 1) << 16) | + fixed16_to_int(src.y1); + priv->viu.osd1_blk0_cfg[3] = ((dest.x2 - 1) << 16) | dest.x1; + priv->viu.osd1_blk0_cfg[4] = ((dest.y2 - 1) << 16) | dest.y1; + + /* Update Canvas with buffer address */ + gem = drm_fb_cma_get_gem_obj(fb, 0); + + meson_canvas_setup(priv, MESON_CANVAS_ID_OSD1, + gem->paddr, fb->pitches[0], + fb->height, MESON_CANVAS_WRAP_NONE, + MESON_CANVAS_BLKMODE_LINEAR); + + spin_unlock_irqrestore(&priv->drm->event_lock, flags); +} + +static void meson_plane_atomic_disable(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct meson_plane *meson_plane = to_meson_plane(plane); + struct meson_drm *priv = meson_plane->priv; + + /* Disable OSD1 */ + writel_bits_relaxed(VPP_OSD1_POSTBLEND, 0, + priv->io_base + _REG(VPP_MISC)); + +} + +static const struct drm_plane_helper_funcs meson_plane_helper_funcs = { + .atomic_check = meson_plane_atomic_check, + .atomic_disable = meson_plane_atomic_disable, + .atomic_update = meson_plane_atomic_update, +}; + +static const struct drm_plane_funcs meson_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 supported_drm_formats[] = { + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_RGB888, + DRM_FORMAT_RGB565, +}; + +int meson_plane_create(struct meson_drm *priv) +{ + struct meson_plane *meson_plane; + struct drm_plane *plane; + + meson_plane = devm_kzalloc(priv->drm->dev, sizeof(*meson_plane), + GFP_KERNEL); + if (!meson_plane) + return -ENOMEM; + + meson_plane->priv = priv; + plane = &meson_plane->base; + + drm_universal_plane_init(priv->drm, plane, 0xFF, + &meson_plane_funcs, + supported_drm_formats, + ARRAY_SIZE(supported_drm_formats), + DRM_PLANE_TYPE_PRIMARY, "meson_primary_plane"); + + drm_plane_helper_add(plane, &meson_plane_helper_funcs); + + priv->primary_plane = plane; + + return 0; +} |