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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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3df0739052
This allows the compiler to do type checking. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
482 lines
13 KiB
C
482 lines
13 KiB
C
/*
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* i.MX IPUv3 DP Overlay Planes
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*
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* Copyright (C) 2013 Philipp Zabel, Pengutronix
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_plane_helper.h>
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#include "video/imx-ipu-v3.h"
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#include "ipuv3-plane.h"
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static inline struct ipu_plane *to_ipu_plane(struct drm_plane *p)
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{
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return container_of(p, struct ipu_plane, base);
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}
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static const uint32_t ipu_plane_formats[] = {
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DRM_FORMAT_ARGB1555,
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DRM_FORMAT_XRGB1555,
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DRM_FORMAT_ABGR1555,
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DRM_FORMAT_XBGR1555,
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DRM_FORMAT_RGBA5551,
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DRM_FORMAT_BGRA5551,
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DRM_FORMAT_ARGB4444,
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DRM_FORMAT_ARGB8888,
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DRM_FORMAT_XRGB8888,
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DRM_FORMAT_ABGR8888,
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DRM_FORMAT_XBGR8888,
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DRM_FORMAT_RGBA8888,
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DRM_FORMAT_RGBX8888,
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DRM_FORMAT_BGRA8888,
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DRM_FORMAT_BGRA8888,
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DRM_FORMAT_UYVY,
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DRM_FORMAT_VYUY,
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DRM_FORMAT_YUYV,
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DRM_FORMAT_YVYU,
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DRM_FORMAT_YUV420,
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DRM_FORMAT_YVU420,
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DRM_FORMAT_RGB565,
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};
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int ipu_plane_irq(struct ipu_plane *ipu_plane)
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{
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return ipu_idmac_channel_irq(ipu_plane->ipu, ipu_plane->ipu_ch,
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IPU_IRQ_EOF);
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}
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static inline unsigned long
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drm_plane_state_to_eba(struct drm_plane_state *state)
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{
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struct drm_framebuffer *fb = state->fb;
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struct drm_gem_cma_object *cma_obj;
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cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
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BUG_ON(!cma_obj);
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return cma_obj->paddr + fb->offsets[0] +
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fb->pitches[0] * (state->src_y >> 16) +
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(fb->bits_per_pixel >> 3) * (state->src_x >> 16);
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}
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static inline unsigned long
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drm_plane_state_to_ubo(struct drm_plane_state *state)
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{
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struct drm_framebuffer *fb = state->fb;
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struct drm_gem_cma_object *cma_obj;
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unsigned long eba = drm_plane_state_to_eba(state);
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cma_obj = drm_fb_cma_get_gem_obj(fb, 1);
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BUG_ON(!cma_obj);
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return cma_obj->paddr + fb->offsets[1] +
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fb->pitches[1] * (state->src_y >> 16) / 2 +
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(state->src_x >> 16) / 2 - eba;
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}
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static inline unsigned long
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drm_plane_state_to_vbo(struct drm_plane_state *state)
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{
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struct drm_framebuffer *fb = state->fb;
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struct drm_gem_cma_object *cma_obj;
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unsigned long eba = drm_plane_state_to_eba(state);
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cma_obj = drm_fb_cma_get_gem_obj(fb, 2);
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BUG_ON(!cma_obj);
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return cma_obj->paddr + fb->offsets[2] +
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fb->pitches[2] * (state->src_y >> 16) / 2 +
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(state->src_x >> 16) / 2 - eba;
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}
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static void ipu_plane_atomic_set_base(struct ipu_plane *ipu_plane,
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struct drm_plane_state *old_state)
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{
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struct drm_plane *plane = &ipu_plane->base;
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struct drm_plane_state *state = plane->state;
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struct drm_framebuffer *fb = state->fb;
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unsigned long eba, ubo, vbo;
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int active;
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eba = drm_plane_state_to_eba(state);
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switch (fb->pixel_format) {
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case DRM_FORMAT_YUV420:
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case DRM_FORMAT_YVU420:
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if (old_state->fb)
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break;
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/*
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* Multiplanar formats have to meet the following restrictions:
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* - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
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* - EBA, UBO and VBO are a multiple of 8
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* - UBO and VBO are unsigned and not larger than 0xfffff8
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* - Only EBA may be changed while scanout is active
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* - The strides of U and V planes must be identical.
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*/
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ubo = drm_plane_state_to_ubo(state);
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vbo = drm_plane_state_to_vbo(state);
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if (fb->pixel_format == DRM_FORMAT_YUV420)
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ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
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fb->pitches[1], ubo, vbo);
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else
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ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
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fb->pitches[1], vbo, ubo);
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dev_dbg(ipu_plane->base.dev->dev,
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"phy = %lu %lu %lu, x = %d, y = %d", eba, ubo, vbo,
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state->src_x >> 16, state->src_y >> 16);
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break;
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default:
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dev_dbg(ipu_plane->base.dev->dev, "phys = %lu, x = %d, y = %d",
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eba, state->src_x >> 16, state->src_y >> 16);
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break;
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}
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if (old_state->fb) {
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active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch);
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ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba);
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ipu_idmac_select_buffer(ipu_plane->ipu_ch, !active);
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} else {
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ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 0, eba);
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ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 1, eba);
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}
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}
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void ipu_plane_put_resources(struct ipu_plane *ipu_plane)
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{
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if (!IS_ERR_OR_NULL(ipu_plane->dp))
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ipu_dp_put(ipu_plane->dp);
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if (!IS_ERR_OR_NULL(ipu_plane->dmfc))
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ipu_dmfc_put(ipu_plane->dmfc);
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if (!IS_ERR_OR_NULL(ipu_plane->ipu_ch))
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ipu_idmac_put(ipu_plane->ipu_ch);
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}
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int ipu_plane_get_resources(struct ipu_plane *ipu_plane)
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{
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int ret;
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ipu_plane->ipu_ch = ipu_idmac_get(ipu_plane->ipu, ipu_plane->dma);
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if (IS_ERR(ipu_plane->ipu_ch)) {
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ret = PTR_ERR(ipu_plane->ipu_ch);
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DRM_ERROR("failed to get idmac channel: %d\n", ret);
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return ret;
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}
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ipu_plane->dmfc = ipu_dmfc_get(ipu_plane->ipu, ipu_plane->dma);
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if (IS_ERR(ipu_plane->dmfc)) {
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ret = PTR_ERR(ipu_plane->dmfc);
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DRM_ERROR("failed to get dmfc: ret %d\n", ret);
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goto err_out;
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}
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if (ipu_plane->dp_flow >= 0) {
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ipu_plane->dp = ipu_dp_get(ipu_plane->ipu, ipu_plane->dp_flow);
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if (IS_ERR(ipu_plane->dp)) {
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ret = PTR_ERR(ipu_plane->dp);
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DRM_ERROR("failed to get dp flow: %d\n", ret);
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goto err_out;
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}
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}
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return 0;
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err_out:
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ipu_plane_put_resources(ipu_plane);
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return ret;
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}
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static void ipu_plane_enable(struct ipu_plane *ipu_plane)
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{
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if (ipu_plane->dp)
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ipu_dp_enable(ipu_plane->ipu);
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ipu_dmfc_enable_channel(ipu_plane->dmfc);
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ipu_idmac_enable_channel(ipu_plane->ipu_ch);
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if (ipu_plane->dp)
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ipu_dp_enable_channel(ipu_plane->dp);
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}
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static void ipu_plane_disable(struct ipu_plane *ipu_plane)
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{
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ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
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if (ipu_plane->dp)
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ipu_dp_disable_channel(ipu_plane->dp);
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ipu_idmac_disable_channel(ipu_plane->ipu_ch);
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ipu_dmfc_disable_channel(ipu_plane->dmfc);
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if (ipu_plane->dp)
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ipu_dp_disable(ipu_plane->ipu);
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}
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static int ipu_disable_plane(struct drm_plane *plane)
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{
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struct ipu_plane *ipu_plane = to_ipu_plane(plane);
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DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
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ipu_plane_disable(ipu_plane);
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return 0;
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}
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static void ipu_plane_destroy(struct drm_plane *plane)
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{
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struct ipu_plane *ipu_plane = to_ipu_plane(plane);
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DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
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ipu_disable_plane(plane);
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drm_plane_cleanup(plane);
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kfree(ipu_plane);
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}
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static const struct drm_plane_funcs ipu_plane_funcs = {
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.update_plane = drm_atomic_helper_update_plane,
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.disable_plane = drm_atomic_helper_disable_plane,
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.destroy = ipu_plane_destroy,
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.reset = drm_atomic_helper_plane_reset,
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.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
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};
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static int ipu_plane_atomic_check(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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struct drm_plane_state *old_state = plane->state;
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struct drm_crtc_state *crtc_state;
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struct device *dev = plane->dev->dev;
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struct drm_framebuffer *fb = state->fb;
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struct drm_framebuffer *old_fb = old_state->fb;
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unsigned long eba, ubo, vbo, old_ubo, old_vbo;
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/* Ok to disable */
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if (!fb)
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return 0;
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if (!state->crtc)
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return -EINVAL;
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crtc_state =
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drm_atomic_get_existing_crtc_state(state->state, state->crtc);
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if (WARN_ON(!crtc_state))
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return -EINVAL;
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/* CRTC should be enabled */
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if (!crtc_state->enable)
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return -EINVAL;
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/* no scaling */
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if (state->src_w >> 16 != state->crtc_w ||
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state->src_h >> 16 != state->crtc_h)
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return -EINVAL;
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switch (plane->type) {
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case DRM_PLANE_TYPE_PRIMARY:
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/* full plane doesn't support partial off screen */
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if (state->crtc_x || state->crtc_y ||
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state->crtc_w != crtc_state->adjusted_mode.hdisplay ||
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state->crtc_h != crtc_state->adjusted_mode.vdisplay)
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return -EINVAL;
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/* full plane minimum width is 13 pixels */
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if (state->crtc_w < 13)
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return -EINVAL;
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break;
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case DRM_PLANE_TYPE_OVERLAY:
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if (state->crtc_x < 0 || state->crtc_y < 0)
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return -EINVAL;
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if (state->crtc_x + state->crtc_w >
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crtc_state->adjusted_mode.hdisplay)
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return -EINVAL;
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if (state->crtc_y + state->crtc_h >
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crtc_state->adjusted_mode.vdisplay)
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return -EINVAL;
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break;
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default:
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dev_warn(dev, "Unsupported plane type\n");
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return -EINVAL;
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}
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if (state->crtc_h < 2)
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return -EINVAL;
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/*
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* since we cannot touch active IDMAC channels, we do not support
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* resizing the enabled plane or changing its format
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*/
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if (old_fb && (state->src_w != old_state->src_w ||
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state->src_h != old_state->src_h ||
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fb->pixel_format != old_fb->pixel_format))
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return -EINVAL;
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eba = drm_plane_state_to_eba(state);
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if (eba & 0x7)
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return -EINVAL;
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if (fb->pitches[0] < 1 || fb->pitches[0] > 16384)
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return -EINVAL;
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if (old_fb && fb->pitches[0] != old_fb->pitches[0])
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return -EINVAL;
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switch (fb->pixel_format) {
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case DRM_FORMAT_YUV420:
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case DRM_FORMAT_YVU420:
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/*
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* Multiplanar formats have to meet the following restrictions:
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* - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
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* - EBA, UBO and VBO are a multiple of 8
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* - UBO and VBO are unsigned and not larger than 0xfffff8
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* - Only EBA may be changed while scanout is active
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* - The strides of U and V planes must be identical.
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*/
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ubo = drm_plane_state_to_ubo(state);
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vbo = drm_plane_state_to_vbo(state);
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if ((ubo & 0x7) || (vbo & 0x7))
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return -EINVAL;
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if ((ubo > 0xfffff8) || (vbo > 0xfffff8))
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return -EINVAL;
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if (old_fb) {
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old_ubo = drm_plane_state_to_ubo(old_state);
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old_vbo = drm_plane_state_to_vbo(old_state);
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if (ubo != old_ubo || vbo != old_vbo)
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return -EINVAL;
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}
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if (fb->pitches[1] != fb->pitches[2])
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return -EINVAL;
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if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
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return -EINVAL;
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if (old_fb && old_fb->pitches[1] != fb->pitches[1])
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return -EINVAL;
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}
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return 0;
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}
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static void ipu_plane_atomic_disable(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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ipu_disable_plane(plane);
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}
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static void ipu_plane_atomic_update(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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struct ipu_plane *ipu_plane = to_ipu_plane(plane);
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struct drm_plane_state *state = plane->state;
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enum ipu_color_space ics;
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if (old_state->fb) {
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ipu_plane_atomic_set_base(ipu_plane, old_state);
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return;
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}
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switch (ipu_plane->dp_flow) {
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case IPU_DP_FLOW_SYNC_BG:
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ipu_dp_setup_channel(ipu_plane->dp,
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IPUV3_COLORSPACE_RGB,
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IPUV3_COLORSPACE_RGB);
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ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
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break;
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case IPU_DP_FLOW_SYNC_FG:
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ics = ipu_drm_fourcc_to_colorspace(state->fb->pixel_format);
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ipu_dp_setup_channel(ipu_plane->dp, ics,
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IPUV3_COLORSPACE_UNKNOWN);
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ipu_dp_set_window_pos(ipu_plane->dp, state->crtc_x,
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state->crtc_y);
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/* Enable local alpha on partial plane */
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switch (state->fb->pixel_format) {
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case DRM_FORMAT_ARGB1555:
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case DRM_FORMAT_ABGR1555:
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case DRM_FORMAT_RGBA5551:
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case DRM_FORMAT_BGRA5551:
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case DRM_FORMAT_ARGB4444:
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case DRM_FORMAT_ARGB8888:
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case DRM_FORMAT_ABGR8888:
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case DRM_FORMAT_RGBA8888:
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case DRM_FORMAT_BGRA8888:
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ipu_dp_set_global_alpha(ipu_plane->dp, false, 0, false);
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break;
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default:
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break;
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}
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}
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ipu_dmfc_config_wait4eot(ipu_plane->dmfc, state->crtc_w);
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ipu_cpmem_zero(ipu_plane->ipu_ch);
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ipu_cpmem_set_resolution(ipu_plane->ipu_ch, state->src_w >> 16,
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state->src_h >> 16);
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ipu_cpmem_set_fmt(ipu_plane->ipu_ch, state->fb->pixel_format);
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ipu_cpmem_set_high_priority(ipu_plane->ipu_ch);
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ipu_idmac_set_double_buffer(ipu_plane->ipu_ch, 1);
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ipu_cpmem_set_stride(ipu_plane->ipu_ch, state->fb->pitches[0]);
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ipu_plane_atomic_set_base(ipu_plane, old_state);
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ipu_plane_enable(ipu_plane);
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}
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static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
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.atomic_check = ipu_plane_atomic_check,
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.atomic_disable = ipu_plane_atomic_disable,
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.atomic_update = ipu_plane_atomic_update,
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};
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struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
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int dma, int dp, unsigned int possible_crtcs,
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enum drm_plane_type type)
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{
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struct ipu_plane *ipu_plane;
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int ret;
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DRM_DEBUG_KMS("channel %d, dp flow %d, possible_crtcs=0x%x\n",
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dma, dp, possible_crtcs);
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ipu_plane = kzalloc(sizeof(*ipu_plane), GFP_KERNEL);
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if (!ipu_plane) {
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DRM_ERROR("failed to allocate plane\n");
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return ERR_PTR(-ENOMEM);
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|
}
|
|
|
|
ipu_plane->ipu = ipu;
|
|
ipu_plane->dma = dma;
|
|
ipu_plane->dp_flow = dp;
|
|
|
|
ret = drm_universal_plane_init(dev, &ipu_plane->base, possible_crtcs,
|
|
&ipu_plane_funcs, ipu_plane_formats,
|
|
ARRAY_SIZE(ipu_plane_formats), type,
|
|
NULL);
|
|
if (ret) {
|
|
DRM_ERROR("failed to initialize plane\n");
|
|
kfree(ipu_plane);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
drm_plane_helper_add(&ipu_plane->base, &ipu_plane_helper_funcs);
|
|
|
|
return ipu_plane;
|
|
}
|