diff options
Diffstat (limited to 'drivers/gpu/drm/imx/ipuv3/ipuv3-plane.c')
-rw-r--r-- | drivers/gpu/drm/imx/ipuv3/ipuv3-plane.c | 497 |
1 files changed, 497 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imx/ipuv3/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3/ipuv3-plane.c new file mode 100644 index 000000000000..52a975efc129 --- /dev/null +++ b/drivers/gpu/drm/imx/ipuv3/ipuv3-plane.c @@ -0,0 +1,497 @@ +/* + * i.MX IPUv3 DP Overlay Planes + * + * Copyright (C) 2013 Philipp Zabel, Pengutronix + * + * 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. + */ + +#include <drm/drmP.h> +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_fb_cma_helper.h> +#include <drm/drm_gem_cma_helper.h> +#include <drm/drm_plane_helper.h> + +#include "video/imx-ipu-v3.h" +#include "ipuv3-plane.h" + +static inline struct ipu_plane *to_ipu_plane(struct drm_plane *p) +{ + return container_of(p, struct ipu_plane, base); +} + +static const uint32_t ipu_plane_formats[] = { + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_ABGR1555, + DRM_FORMAT_XBGR1555, + DRM_FORMAT_RGBA5551, + DRM_FORMAT_BGRA5551, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_ABGR8888, + DRM_FORMAT_XBGR8888, + DRM_FORMAT_RGBA8888, + DRM_FORMAT_RGBX8888, + DRM_FORMAT_BGRA8888, + DRM_FORMAT_BGRA8888, + DRM_FORMAT_UYVY, + DRM_FORMAT_VYUY, + DRM_FORMAT_YUYV, + DRM_FORMAT_YVYU, + DRM_FORMAT_YUV420, + DRM_FORMAT_YVU420, + DRM_FORMAT_RGB565, +}; + +int ipu_plane_irq(struct ipu_plane *ipu_plane) +{ + return ipu_idmac_channel_irq(ipu_plane->ipu, ipu_plane->ipu_ch, + IPU_IRQ_EOF); +} + +static inline unsigned long +drm_plane_state_to_eba(struct drm_plane_state *state) +{ + struct drm_framebuffer *fb = state->fb; + struct drm_gem_cma_object *cma_obj; + + cma_obj = drm_fb_cma_get_gem_obj(fb, 0); + BUG_ON(!cma_obj); + + return cma_obj->paddr + fb->offsets[0] + + fb->pitches[0] * (state->src_y >> 16) + + (fb->bits_per_pixel >> 3) * (state->src_x >> 16); +} + +static inline unsigned long +drm_plane_state_to_ubo(struct drm_plane_state *state) +{ + struct drm_framebuffer *fb = state->fb; + struct drm_gem_cma_object *cma_obj; + unsigned long eba = drm_plane_state_to_eba(state); + + cma_obj = drm_fb_cma_get_gem_obj(fb, 1); + BUG_ON(!cma_obj); + + return cma_obj->paddr + fb->offsets[1] + + fb->pitches[1] * (state->src_y >> 16) / 2 + + (state->src_x >> 16) / 2 - eba; +} + +static inline unsigned long +drm_plane_state_to_vbo(struct drm_plane_state *state) +{ + struct drm_framebuffer *fb = state->fb; + struct drm_gem_cma_object *cma_obj; + unsigned long eba = drm_plane_state_to_eba(state); + + cma_obj = drm_fb_cma_get_gem_obj(fb, 2); + BUG_ON(!cma_obj); + + return cma_obj->paddr + fb->offsets[2] + + fb->pitches[2] * (state->src_y >> 16) / 2 + + (state->src_x >> 16) / 2 - eba; +} + +static void ipu_plane_atomic_set_base(struct ipu_plane *ipu_plane) +{ + struct drm_plane *plane = &ipu_plane->base; + struct drm_plane_state *state = plane->state; + struct drm_crtc_state *crtc_state = state->crtc->state; + struct drm_framebuffer *fb = state->fb; + unsigned long eba, ubo, vbo; + int active; + + eba = drm_plane_state_to_eba(state); + + switch (fb->pixel_format) { + case DRM_FORMAT_YUV420: + case DRM_FORMAT_YVU420: + if (!drm_atomic_crtc_needs_modeset(crtc_state)) + break; + + /* + * Multiplanar formats have to meet the following restrictions: + * - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO + * - EBA, UBO and VBO are a multiple of 8 + * - UBO and VBO are unsigned and not larger than 0xfffff8 + * - Only EBA may be changed while scanout is active + * - The strides of U and V planes must be identical. + */ + ubo = drm_plane_state_to_ubo(state); + vbo = drm_plane_state_to_vbo(state); + + if (fb->pixel_format == DRM_FORMAT_YUV420) + ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch, + fb->pitches[1], ubo, vbo); + else + ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch, + fb->pitches[1], vbo, ubo); + + dev_dbg(ipu_plane->base.dev->dev, + "phy = %lu %lu %lu, x = %d, y = %d", eba, ubo, vbo, + state->src_x >> 16, state->src_y >> 16); + break; + default: + dev_dbg(ipu_plane->base.dev->dev, "phys = %lu, x = %d, y = %d", + eba, state->src_x >> 16, state->src_y >> 16); + + break; + } + + if (!drm_atomic_crtc_needs_modeset(crtc_state)) { + active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch); + ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba); + ipu_idmac_select_buffer(ipu_plane->ipu_ch, !active); + } else { + ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 0, eba); + ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 1, eba); + } +} + +void ipu_plane_put_resources(struct ipu_plane *ipu_plane) +{ + if (!IS_ERR_OR_NULL(ipu_plane->dp)) + ipu_dp_put(ipu_plane->dp); + if (!IS_ERR_OR_NULL(ipu_plane->dmfc)) + ipu_dmfc_put(ipu_plane->dmfc); + if (!IS_ERR_OR_NULL(ipu_plane->ipu_ch)) + ipu_idmac_put(ipu_plane->ipu_ch); +} + +int ipu_plane_get_resources(struct ipu_plane *ipu_plane) +{ + int ret; + + ipu_plane->ipu_ch = ipu_idmac_get(ipu_plane->ipu, ipu_plane->dma); + if (IS_ERR(ipu_plane->ipu_ch)) { + ret = PTR_ERR(ipu_plane->ipu_ch); + DRM_ERROR("failed to get idmac channel: %d\n", ret); + return ret; + } + + ipu_plane->dmfc = ipu_dmfc_get(ipu_plane->ipu, ipu_plane->dma); + if (IS_ERR(ipu_plane->dmfc)) { + ret = PTR_ERR(ipu_plane->dmfc); + DRM_ERROR("failed to get dmfc: ret %d\n", ret); + goto err_out; + } + + if (ipu_plane->dp_flow >= 0) { + ipu_plane->dp = ipu_dp_get(ipu_plane->ipu, ipu_plane->dp_flow); + if (IS_ERR(ipu_plane->dp)) { + ret = PTR_ERR(ipu_plane->dp); + DRM_ERROR("failed to get dp flow: %d\n", ret); + goto err_out; + } + } + + return 0; +err_out: + ipu_plane_put_resources(ipu_plane); + + return ret; +} + +static void ipu_plane_enable(struct ipu_plane *ipu_plane) +{ + if (ipu_plane->dp) + ipu_dp_enable(ipu_plane->ipu); + ipu_dmfc_enable_channel(ipu_plane->dmfc); + ipu_idmac_enable_channel(ipu_plane->ipu_ch); + if (ipu_plane->dp) + ipu_dp_enable_channel(ipu_plane->dp); +} + +static int ipu_disable_plane(struct drm_plane *plane) +{ + struct ipu_plane *ipu_plane = to_ipu_plane(plane); + + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50); + + if (ipu_plane->dp) + ipu_dp_disable_channel(ipu_plane->dp); + ipu_idmac_disable_channel(ipu_plane->ipu_ch); + ipu_dmfc_disable_channel(ipu_plane->dmfc); + if (ipu_plane->dp) + ipu_dp_disable(ipu_plane->ipu); + + return 0; +} + +static void ipu_plane_destroy(struct drm_plane *plane) +{ + struct ipu_plane *ipu_plane = to_ipu_plane(plane); + + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + drm_plane_cleanup(plane); + kfree(ipu_plane); +} + +static const struct drm_plane_funcs ipu_plane_funcs = { + .update_plane = drm_atomic_helper_update_plane, + .disable_plane = drm_atomic_helper_disable_plane, + .destroy = ipu_plane_destroy, + .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 int ipu_plane_atomic_check(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct drm_plane_state *old_state = plane->state; + struct drm_crtc_state *crtc_state; + struct device *dev = plane->dev->dev; + struct drm_framebuffer *fb = state->fb; + struct drm_framebuffer *old_fb = old_state->fb; + unsigned long eba, ubo, vbo, old_ubo, old_vbo; + int hsub, vsub; + + /* Ok to disable */ + if (!fb) + return 0; + + if (!state->crtc) + return -EINVAL; + + crtc_state = + drm_atomic_get_existing_crtc_state(state->state, state->crtc); + if (WARN_ON(!crtc_state)) + return -EINVAL; + + /* CRTC should be enabled */ + if (!crtc_state->enable) + return -EINVAL; + + /* no scaling */ + if (state->src_w >> 16 != state->crtc_w || + state->src_h >> 16 != state->crtc_h) + return -EINVAL; + + switch (plane->type) { + case DRM_PLANE_TYPE_PRIMARY: + /* full plane doesn't support partial off screen */ + if (state->crtc_x || state->crtc_y || + state->crtc_w != crtc_state->adjusted_mode.hdisplay || + state->crtc_h != crtc_state->adjusted_mode.vdisplay) + return -EINVAL; + + /* full plane minimum width is 13 pixels */ + if (state->crtc_w < 13) + return -EINVAL; + break; + case DRM_PLANE_TYPE_OVERLAY: + if (state->crtc_x < 0 || state->crtc_y < 0) + return -EINVAL; + + if (state->crtc_x + state->crtc_w > + crtc_state->adjusted_mode.hdisplay) + return -EINVAL; + if (state->crtc_y + state->crtc_h > + crtc_state->adjusted_mode.vdisplay) + return -EINVAL; + break; + default: + dev_warn(dev, "Unsupported plane type\n"); + return -EINVAL; + } + + if (state->crtc_h < 2) + return -EINVAL; + + /* + * We support resizing active plane or changing its format by + * forcing CRTC mode change in plane's ->atomic_check callback + * and disabling all affected active planes in CRTC's ->atomic_disable + * callback. The planes will be reenabled in plane's ->atomic_update + * callback. + */ + if (old_fb && (state->src_w != old_state->src_w || + state->src_h != old_state->src_h || + fb->pixel_format != old_fb->pixel_format)) + crtc_state->mode_changed = true; + + eba = drm_plane_state_to_eba(state); + + if (eba & 0x7) + return -EINVAL; + + if (fb->pitches[0] < 1 || fb->pitches[0] > 16384) + return -EINVAL; + + if (old_fb && fb->pitches[0] != old_fb->pitches[0]) + crtc_state->mode_changed = true; + + switch (fb->pixel_format) { + case DRM_FORMAT_YUV420: + case DRM_FORMAT_YVU420: + /* + * Multiplanar formats have to meet the following restrictions: + * - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO + * - EBA, UBO and VBO are a multiple of 8 + * - UBO and VBO are unsigned and not larger than 0xfffff8 + * - Only EBA may be changed while scanout is active + * - The strides of U and V planes must be identical. + */ + ubo = drm_plane_state_to_ubo(state); + vbo = drm_plane_state_to_vbo(state); + + if ((ubo & 0x7) || (vbo & 0x7)) + return -EINVAL; + + if ((ubo > 0xfffff8) || (vbo > 0xfffff8)) + return -EINVAL; + + if (old_fb && + (old_fb->pixel_format == DRM_FORMAT_YUV420 || + old_fb->pixel_format == DRM_FORMAT_YVU420)) { + old_ubo = drm_plane_state_to_ubo(old_state); + old_vbo = drm_plane_state_to_vbo(old_state); + if (ubo != old_ubo || vbo != old_vbo) + return -EINVAL; + } + + if (fb->pitches[1] != fb->pitches[2]) + return -EINVAL; + + if (fb->pitches[1] < 1 || fb->pitches[1] > 16384) + return -EINVAL; + + if (old_fb && old_fb->pitches[1] != fb->pitches[1]) + crtc_state->mode_changed = true; + + /* + * The x/y offsets must be even in case of horizontal/vertical + * chroma subsampling. + */ + hsub = drm_format_horz_chroma_subsampling(fb->pixel_format); + vsub = drm_format_vert_chroma_subsampling(fb->pixel_format); + if (((state->src_x >> 16) & (hsub - 1)) || + ((state->src_y >> 16) & (vsub - 1))) + return -EINVAL; + } + + return 0; +} + +static void ipu_plane_atomic_disable(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + ipu_disable_plane(plane); +} + +static void ipu_plane_atomic_update(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct ipu_plane *ipu_plane = to_ipu_plane(plane); + struct drm_plane_state *state = plane->state; + enum ipu_color_space ics; + + if (old_state->fb) { + struct drm_crtc_state *crtc_state = state->crtc->state; + + if (!drm_atomic_crtc_needs_modeset(crtc_state)) { + ipu_plane_atomic_set_base(ipu_plane); + return; + } + } + + switch (ipu_plane->dp_flow) { + case IPU_DP_FLOW_SYNC_BG: + ipu_dp_setup_channel(ipu_plane->dp, + IPUV3_COLORSPACE_RGB, + IPUV3_COLORSPACE_RGB); + ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true); + break; + case IPU_DP_FLOW_SYNC_FG: + ics = ipu_drm_fourcc_to_colorspace(state->fb->pixel_format); + ipu_dp_setup_channel(ipu_plane->dp, ics, + IPUV3_COLORSPACE_UNKNOWN); + ipu_dp_set_window_pos(ipu_plane->dp, state->crtc_x, + state->crtc_y); + /* Enable local alpha on partial plane */ + switch (state->fb->pixel_format) { + case DRM_FORMAT_ARGB1555: + case DRM_FORMAT_ABGR1555: + case DRM_FORMAT_RGBA5551: + case DRM_FORMAT_BGRA5551: + case DRM_FORMAT_ARGB4444: + case DRM_FORMAT_ARGB8888: + case DRM_FORMAT_ABGR8888: + case DRM_FORMAT_RGBA8888: + case DRM_FORMAT_BGRA8888: + ipu_dp_set_global_alpha(ipu_plane->dp, false, 0, false); + break; + default: + ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true); + break; + } + } + + ipu_dmfc_config_wait4eot(ipu_plane->dmfc, state->crtc_w); + + ipu_cpmem_zero(ipu_plane->ipu_ch); + ipu_cpmem_set_resolution(ipu_plane->ipu_ch, state->src_w >> 16, + state->src_h >> 16); + ipu_cpmem_set_fmt(ipu_plane->ipu_ch, state->fb->pixel_format); + ipu_cpmem_set_high_priority(ipu_plane->ipu_ch); + ipu_idmac_set_double_buffer(ipu_plane->ipu_ch, 1); + ipu_cpmem_set_stride(ipu_plane->ipu_ch, state->fb->pitches[0]); + ipu_plane_atomic_set_base(ipu_plane); + ipu_plane_enable(ipu_plane); +} + +static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = { + .atomic_check = ipu_plane_atomic_check, + .atomic_disable = ipu_plane_atomic_disable, + .atomic_update = ipu_plane_atomic_update, +}; + +struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu, + int dma, int dp, unsigned int possible_crtcs, + enum drm_plane_type type) +{ + struct ipu_plane *ipu_plane; + int ret; + + DRM_DEBUG_KMS("channel %d, dp flow %d, possible_crtcs=0x%x\n", + dma, dp, possible_crtcs); + + ipu_plane = kzalloc(sizeof(*ipu_plane), GFP_KERNEL); + if (!ipu_plane) { + DRM_ERROR("failed to allocate plane\n"); + return ERR_PTR(-ENOMEM); + } + + 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), + NULL, 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; +} |