|  | // SPDX-License-Identifier: GPL-2.0+ | 
|  | /* | 
|  | * Copyright (C) 2018 BayLibre, SAS | 
|  | * Author: Neil Armstrong <narmstrong@baylibre.com> | 
|  | * Copyright (C) 2015 Amlogic, Inc. All rights reserved. | 
|  | */ | 
|  |  | 
|  | #include <linux/bitfield.h> | 
|  |  | 
|  | #include <drm/drm_atomic.h> | 
|  | #include <drm/drm_atomic_helper.h> | 
|  | #include <drm/drm_device.h> | 
|  | #include <drm/drm_fb_cma_helper.h> | 
|  | #include <drm/drm_fourcc.h> | 
|  | #include <drm/drm_gem_atomic_helper.h> | 
|  | #include <drm/drm_gem_cma_helper.h> | 
|  | #include <drm/drm_plane_helper.h> | 
|  |  | 
|  | #include "meson_overlay.h" | 
|  | #include "meson_registers.h" | 
|  | #include "meson_viu.h" | 
|  | #include "meson_vpp.h" | 
|  |  | 
|  | /* VD1_IF0_GEN_REG */ | 
|  | #define VD_URGENT_CHROMA		BIT(28) | 
|  | #define VD_URGENT_LUMA			BIT(27) | 
|  | #define VD_HOLD_LINES(lines)		FIELD_PREP(GENMASK(24, 19), lines) | 
|  | #define VD_DEMUX_MODE_RGB		BIT(16) | 
|  | #define VD_BYTES_PER_PIXEL(val)		FIELD_PREP(GENMASK(15, 14), val) | 
|  | #define VD_CHRO_RPT_LASTL_CTRL		BIT(6) | 
|  | #define VD_LITTLE_ENDIAN		BIT(4) | 
|  | #define VD_SEPARATE_EN			BIT(1) | 
|  | #define VD_ENABLE			BIT(0) | 
|  |  | 
|  | /* VD1_IF0_CANVAS0 */ | 
|  | #define CANVAS_ADDR2(addr)		FIELD_PREP(GENMASK(23, 16), addr) | 
|  | #define CANVAS_ADDR1(addr)		FIELD_PREP(GENMASK(15, 8), addr) | 
|  | #define CANVAS_ADDR0(addr)		FIELD_PREP(GENMASK(7, 0), addr) | 
|  |  | 
|  | /* VD1_IF0_LUMA_X0 VD1_IF0_CHROMA_X0 */ | 
|  | #define VD_X_START(value)		FIELD_PREP(GENMASK(14, 0), value) | 
|  | #define VD_X_END(value)			FIELD_PREP(GENMASK(30, 16), value) | 
|  |  | 
|  | /* VD1_IF0_LUMA_Y0 VD1_IF0_CHROMA_Y0 */ | 
|  | #define VD_Y_START(value)		FIELD_PREP(GENMASK(12, 0), value) | 
|  | #define VD_Y_END(value)			FIELD_PREP(GENMASK(28, 16), value) | 
|  |  | 
|  | /* VD1_IF0_GEN_REG2 */ | 
|  | #define VD_COLOR_MAP(value)		FIELD_PREP(GENMASK(1, 0), value) | 
|  |  | 
|  | /* VIU_VD1_FMT_CTRL */ | 
|  | #define VD_HORZ_Y_C_RATIO(value)	FIELD_PREP(GENMASK(22, 21), value) | 
|  | #define VD_HORZ_FMT_EN			BIT(20) | 
|  | #define VD_VERT_RPT_LINE0		BIT(16) | 
|  | #define VD_VERT_INITIAL_PHASE(value)	FIELD_PREP(GENMASK(11, 8), value) | 
|  | #define VD_VERT_PHASE_STEP(value)	FIELD_PREP(GENMASK(7, 1), value) | 
|  | #define VD_VERT_FMT_EN			BIT(0) | 
|  |  | 
|  | /* VPP_POSTBLEND_VD1_H_START_END */ | 
|  | #define VD_H_END(value)			FIELD_PREP(GENMASK(11, 0), value) | 
|  | #define VD_H_START(value)		FIELD_PREP(GENMASK(27, 16), \ | 
|  | ((value) & GENMASK(13, 0))) | 
|  |  | 
|  | /* VPP_POSTBLEND_VD1_V_START_END */ | 
|  | #define VD_V_END(value)			FIELD_PREP(GENMASK(11, 0), value) | 
|  | #define VD_V_START(value)		FIELD_PREP(GENMASK(27, 16), value) | 
|  |  | 
|  | /* VPP_BLEND_VD2_V_START_END */ | 
|  | #define VD2_V_END(value)		FIELD_PREP(GENMASK(11, 0), value) | 
|  | #define VD2_V_START(value)		FIELD_PREP(GENMASK(27, 16), value) | 
|  |  | 
|  | /* VIU_VD1_FMT_W */ | 
|  | #define VD_V_WIDTH(value)		FIELD_PREP(GENMASK(11, 0), value) | 
|  | #define VD_H_WIDTH(value)		FIELD_PREP(GENMASK(27, 16), value) | 
|  |  | 
|  | /* VPP_HSC_REGION12_STARTP VPP_HSC_REGION34_STARTP */ | 
|  | #define VD_REGION24_START(value)	FIELD_PREP(GENMASK(11, 0), value) | 
|  | #define VD_REGION13_END(value)		FIELD_PREP(GENMASK(27, 16), value) | 
|  |  | 
|  | /* AFBC_ENABLE */ | 
|  | #define AFBC_DEC_ENABLE			BIT(8) | 
|  | #define AFBC_FRM_START			BIT(0) | 
|  |  | 
|  | /* AFBC_MODE */ | 
|  | #define AFBC_HORZ_SKIP_UV(value)	FIELD_PREP(GENMASK(1, 0), value) | 
|  | #define AFBC_VERT_SKIP_UV(value)	FIELD_PREP(GENMASK(3, 2), value) | 
|  | #define AFBC_HORZ_SKIP_Y(value)		FIELD_PREP(GENMASK(5, 4), value) | 
|  | #define AFBC_VERT_SKIP_Y(value)		FIELD_PREP(GENMASK(7, 6), value) | 
|  | #define AFBC_COMPBITS_YUV(value)	FIELD_PREP(GENMASK(13, 8), value) | 
|  | #define AFBC_COMPBITS_8BIT		0 | 
|  | #define AFBC_COMPBITS_10BIT		(2 | (2 << 2) | (2 << 4)) | 
|  | #define AFBC_BURST_LEN(value)		FIELD_PREP(GENMASK(15, 14), value) | 
|  | #define AFBC_HOLD_LINE_NUM(value)	FIELD_PREP(GENMASK(22, 16), value) | 
|  | #define AFBC_MIF_URGENT(value)		FIELD_PREP(GENMASK(25, 24), value) | 
|  | #define AFBC_REV_MODE(value)		FIELD_PREP(GENMASK(27, 26), value) | 
|  | #define AFBC_BLK_MEM_MODE		BIT(28) | 
|  | #define AFBC_SCATTER_MODE		BIT(29) | 
|  | #define AFBC_SOFT_RESET			BIT(31) | 
|  |  | 
|  | /* AFBC_SIZE_IN */ | 
|  | #define AFBC_HSIZE_IN(value)		FIELD_PREP(GENMASK(28, 16), value) | 
|  | #define AFBC_VSIZE_IN(value)		FIELD_PREP(GENMASK(12, 0), value) | 
|  |  | 
|  | /* AFBC_DEC_DEF_COLOR */ | 
|  | #define AFBC_DEF_COLOR_Y(value)		FIELD_PREP(GENMASK(29, 20), value) | 
|  | #define AFBC_DEF_COLOR_U(value)		FIELD_PREP(GENMASK(19, 10), value) | 
|  | #define AFBC_DEF_COLOR_V(value)		FIELD_PREP(GENMASK(9, 0), value) | 
|  |  | 
|  | /* AFBC_CONV_CTRL */ | 
|  | #define AFBC_CONV_LBUF_LEN(value)	FIELD_PREP(GENMASK(11, 0), value) | 
|  |  | 
|  | /* AFBC_LBUF_DEPTH */ | 
|  | #define AFBC_DEC_LBUF_DEPTH(value)	FIELD_PREP(GENMASK(27, 16), value) | 
|  | #define AFBC_MIF_LBUF_DEPTH(value)	FIELD_PREP(GENMASK(11, 0), value) | 
|  |  | 
|  | /* AFBC_OUT_XSCOPE/AFBC_SIZE_OUT */ | 
|  | #define AFBC_HSIZE_OUT(value)		FIELD_PREP(GENMASK(28, 16), value) | 
|  | #define AFBC_VSIZE_OUT(value)		FIELD_PREP(GENMASK(12, 0), value) | 
|  | #define AFBC_OUT_HORZ_BGN(value)	FIELD_PREP(GENMASK(28, 16), value) | 
|  | #define AFBC_OUT_HORZ_END(value)	FIELD_PREP(GENMASK(12, 0), value) | 
|  |  | 
|  | /* AFBC_OUT_YSCOPE */ | 
|  | #define AFBC_OUT_VERT_BGN(value)	FIELD_PREP(GENMASK(28, 16), value) | 
|  | #define AFBC_OUT_VERT_END(value)	FIELD_PREP(GENMASK(12, 0), value) | 
|  |  | 
|  | /* AFBC_VD_CFMT_CTRL */ | 
|  | #define AFBC_HORZ_RPT_PIXEL0		BIT(23) | 
|  | #define AFBC_HORZ_Y_C_RATIO(value)	FIELD_PREP(GENMASK(22, 21), value) | 
|  | #define AFBC_HORZ_FMT_EN		BIT(20) | 
|  | #define AFBC_VERT_RPT_LINE0		BIT(16) | 
|  | #define AFBC_VERT_INITIAL_PHASE(value)	FIELD_PREP(GENMASK(11, 8), value) | 
|  | #define AFBC_VERT_PHASE_STEP(value)	FIELD_PREP(GENMASK(7, 1), value) | 
|  | #define AFBC_VERT_FMT_EN		BIT(0) | 
|  |  | 
|  | /* AFBC_VD_CFMT_W */ | 
|  | #define AFBC_VD_V_WIDTH(value)		FIELD_PREP(GENMASK(11, 0), value) | 
|  | #define AFBC_VD_H_WIDTH(value)		FIELD_PREP(GENMASK(27, 16), value) | 
|  |  | 
|  | /* AFBC_MIF_HOR_SCOPE */ | 
|  | #define AFBC_MIF_BLK_BGN_H(value)	FIELD_PREP(GENMASK(25, 16), value) | 
|  | #define AFBC_MIF_BLK_END_H(value)	FIELD_PREP(GENMASK(9, 0), value) | 
|  |  | 
|  | /* AFBC_MIF_VER_SCOPE */ | 
|  | #define AFBC_MIF_BLK_BGN_V(value)	FIELD_PREP(GENMASK(27, 16), value) | 
|  | #define AFBC_MIF_BLK_END_V(value)	FIELD_PREP(GENMASK(11, 0), value) | 
|  |  | 
|  | /* AFBC_PIXEL_HOR_SCOPE */ | 
|  | #define AFBC_DEC_PIXEL_BGN_H(value)	FIELD_PREP(GENMASK(28, 16), \ | 
|  | ((value) & GENMASK(12, 0))) | 
|  | #define AFBC_DEC_PIXEL_END_H(value)	FIELD_PREP(GENMASK(12, 0), value) | 
|  |  | 
|  | /* AFBC_PIXEL_VER_SCOPE */ | 
|  | #define AFBC_DEC_PIXEL_BGN_V(value)	FIELD_PREP(GENMASK(28, 16), value) | 
|  | #define AFBC_DEC_PIXEL_END_V(value)	FIELD_PREP(GENMASK(12, 0), value) | 
|  |  | 
|  | /* AFBC_VD_CFMT_H */ | 
|  | #define AFBC_VD_HEIGHT(value)		FIELD_PREP(GENMASK(12, 0), value) | 
|  |  | 
|  | struct meson_overlay { | 
|  | struct drm_plane base; | 
|  | struct meson_drm *priv; | 
|  | }; | 
|  | #define to_meson_overlay(x) container_of(x, struct meson_overlay, base) | 
|  |  | 
|  | #define FRAC_16_16(mult, div)    (((mult) << 16) / (div)) | 
|  |  | 
|  | static int meson_overlay_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 drm_crtc_state *crtc_state; | 
|  |  | 
|  | if (!new_plane_state->crtc) | 
|  | return 0; | 
|  |  | 
|  | crtc_state = drm_atomic_get_crtc_state(state, | 
|  | new_plane_state->crtc); | 
|  | if (IS_ERR(crtc_state)) | 
|  | return PTR_ERR(crtc_state); | 
|  |  | 
|  | return drm_atomic_helper_check_plane_state(new_plane_state, | 
|  | crtc_state, | 
|  | FRAC_16_16(1, 5), | 
|  | FRAC_16_16(5, 1), | 
|  | 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 const uint8_t skip_tab[6] = { | 
|  | 0x24, 0x04, 0x68, 0x48, 0x28, 0x08, | 
|  | }; | 
|  |  | 
|  | static void meson_overlay_get_vertical_phase(unsigned int ratio_y, int *phase, | 
|  | int *repeat, bool interlace) | 
|  | { | 
|  | int offset_in = 0; | 
|  | int offset_out = 0; | 
|  | int repeat_skip = 0; | 
|  |  | 
|  | if (!interlace && ratio_y > (1 << 18)) | 
|  | offset_out = (1 * ratio_y) >> 10; | 
|  |  | 
|  | while ((offset_in + (4 << 8)) <= offset_out) { | 
|  | repeat_skip++; | 
|  | offset_in += 4 << 8; | 
|  | } | 
|  |  | 
|  | *phase = (offset_out - offset_in) >> 2; | 
|  |  | 
|  | if (*phase > 0x100) | 
|  | repeat_skip++; | 
|  |  | 
|  | *phase = *phase & 0xff; | 
|  |  | 
|  | if (repeat_skip > 5) | 
|  | repeat_skip = 5; | 
|  |  | 
|  | *repeat = skip_tab[repeat_skip]; | 
|  | } | 
|  |  | 
|  | static void meson_overlay_setup_scaler_params(struct meson_drm *priv, | 
|  | struct drm_plane *plane, | 
|  | bool interlace_mode) | 
|  | { | 
|  | struct drm_crtc_state *crtc_state = priv->crtc->state; | 
|  | int video_top, video_left, video_width, video_height; | 
|  | struct drm_plane_state *state = plane->state; | 
|  | unsigned int vd_start_lines, vd_end_lines; | 
|  | unsigned int hd_start_lines, hd_end_lines; | 
|  | unsigned int crtc_height, crtc_width; | 
|  | unsigned int vsc_startp, vsc_endp; | 
|  | unsigned int hsc_startp, hsc_endp; | 
|  | unsigned int crop_top, crop_left; | 
|  | int vphase, vphase_repeat_skip; | 
|  | unsigned int ratio_x, ratio_y; | 
|  | int temp_height, temp_width; | 
|  | unsigned int w_in, h_in; | 
|  | int afbc_left, afbc_right; | 
|  | int afbc_top_src, afbc_bottom_src; | 
|  | int afbc_top, afbc_bottom; | 
|  | int temp, start, end; | 
|  |  | 
|  | if (!crtc_state) { | 
|  | DRM_ERROR("Invalid crtc_state\n"); | 
|  | return; | 
|  | } | 
|  |  | 
|  | crtc_height = crtc_state->mode.vdisplay; | 
|  | crtc_width = crtc_state->mode.hdisplay; | 
|  |  | 
|  | w_in = fixed16_to_int(state->src_w); | 
|  | h_in = fixed16_to_int(state->src_h); | 
|  | crop_top = fixed16_to_int(state->src_y); | 
|  | crop_left = fixed16_to_int(state->src_x); | 
|  |  | 
|  | video_top = state->crtc_y; | 
|  | video_left = state->crtc_x; | 
|  | video_width = state->crtc_w; | 
|  | video_height = state->crtc_h; | 
|  |  | 
|  | DRM_DEBUG("crtc_width %d crtc_height %d interlace %d\n", | 
|  | crtc_width, crtc_height, interlace_mode); | 
|  | DRM_DEBUG("w_in %d h_in %d crop_top %d crop_left %d\n", | 
|  | w_in, h_in, crop_top, crop_left); | 
|  | DRM_DEBUG("video top %d left %d width %d height %d\n", | 
|  | video_top, video_left, video_width, video_height); | 
|  |  | 
|  | ratio_x = (w_in << 18) / video_width; | 
|  | ratio_y = (h_in << 18) / video_height; | 
|  |  | 
|  | if (ratio_x * video_width < (w_in << 18)) | 
|  | ratio_x++; | 
|  |  | 
|  | DRM_DEBUG("ratio x 0x%x y 0x%x\n", ratio_x, ratio_y); | 
|  |  | 
|  | meson_overlay_get_vertical_phase(ratio_y, &vphase, &vphase_repeat_skip, | 
|  | interlace_mode); | 
|  |  | 
|  | DRM_DEBUG("vphase 0x%x skip %d\n", vphase, vphase_repeat_skip); | 
|  |  | 
|  | /* Vertical */ | 
|  |  | 
|  | start = video_top + video_height / 2 - ((h_in << 17) / ratio_y); | 
|  | end = (h_in << 18) / ratio_y + start - 1; | 
|  |  | 
|  | if (video_top < 0 && start < 0) | 
|  | vd_start_lines = (-(start) * ratio_y) >> 18; | 
|  | else if (start < video_top) | 
|  | vd_start_lines = ((video_top - start) * ratio_y) >> 18; | 
|  | else | 
|  | vd_start_lines = 0; | 
|  |  | 
|  | if (video_top < 0) | 
|  | temp_height = min_t(unsigned int, | 
|  | video_top + video_height - 1, | 
|  | crtc_height - 1); | 
|  | else | 
|  | temp_height = min_t(unsigned int, | 
|  | video_top + video_height - 1, | 
|  | crtc_height - 1) - video_top + 1; | 
|  |  | 
|  | temp = vd_start_lines + (temp_height * ratio_y >> 18); | 
|  | vd_end_lines = (temp <= (h_in - 1)) ? temp : (h_in - 1); | 
|  |  | 
|  | vd_start_lines += crop_left; | 
|  | vd_end_lines += crop_left; | 
|  |  | 
|  | /* | 
|  | * TOFIX: Input frames are handled and scaled like progressive frames, | 
|  | * proper handling of interlaced field input frames need to be figured | 
|  | * out using the proper framebuffer flags set by userspace. | 
|  | */ | 
|  | if (interlace_mode) { | 
|  | start >>= 1; | 
|  | end >>= 1; | 
|  | } | 
|  |  | 
|  | vsc_startp = max_t(int, start, | 
|  | max_t(int, 0, video_top)); | 
|  | vsc_endp = min_t(int, end, | 
|  | min_t(int, crtc_height - 1, | 
|  | video_top + video_height - 1)); | 
|  |  | 
|  | DRM_DEBUG("vsc startp %d endp %d start_lines %d end_lines %d\n", | 
|  | vsc_startp, vsc_endp, vd_start_lines, vd_end_lines); | 
|  |  | 
|  | afbc_top = round_down(vd_start_lines, 4); | 
|  | afbc_bottom = round_up(vd_end_lines + 1, 4); | 
|  | afbc_top_src = 0; | 
|  | afbc_bottom_src = round_up(h_in + 1, 4); | 
|  |  | 
|  | DRM_DEBUG("afbc top %d (src %d) bottom %d (src %d)\n", | 
|  | afbc_top, afbc_top_src, afbc_bottom, afbc_bottom_src); | 
|  |  | 
|  | /* Horizontal */ | 
|  |  | 
|  | start = video_left + video_width / 2 - ((w_in << 17) / ratio_x); | 
|  | end = (w_in << 18) / ratio_x + start - 1; | 
|  |  | 
|  | if (video_left < 0 && start < 0) | 
|  | hd_start_lines = (-(start) * ratio_x) >> 18; | 
|  | else if (start < video_left) | 
|  | hd_start_lines = ((video_left - start) * ratio_x) >> 18; | 
|  | else | 
|  | hd_start_lines = 0; | 
|  |  | 
|  | if (video_left < 0) | 
|  | temp_width = min_t(unsigned int, | 
|  | video_left + video_width - 1, | 
|  | crtc_width - 1); | 
|  | else | 
|  | temp_width = min_t(unsigned int, | 
|  | video_left + video_width - 1, | 
|  | crtc_width - 1) - video_left + 1; | 
|  |  | 
|  | temp = hd_start_lines + (temp_width * ratio_x >> 18); | 
|  | hd_end_lines = (temp <= (w_in - 1)) ? temp : (w_in - 1); | 
|  |  | 
|  | priv->viu.vpp_line_in_length = hd_end_lines - hd_start_lines + 1; | 
|  | hsc_startp = max_t(int, start, max_t(int, 0, video_left)); | 
|  | hsc_endp = min_t(int, end, min_t(int, crtc_width - 1, | 
|  | video_left + video_width - 1)); | 
|  |  | 
|  | hd_start_lines += crop_top; | 
|  | hd_end_lines += crop_top; | 
|  |  | 
|  | DRM_DEBUG("hsc startp %d endp %d start_lines %d end_lines %d\n", | 
|  | hsc_startp, hsc_endp, hd_start_lines, hd_end_lines); | 
|  |  | 
|  | if (hd_start_lines > 0 || (hd_end_lines < w_in)) { | 
|  | afbc_left = 0; | 
|  | afbc_right = round_up(w_in, 32); | 
|  | } else { | 
|  | afbc_left = round_down(hd_start_lines, 32); | 
|  | afbc_right = round_up(hd_end_lines + 1, 32); | 
|  | } | 
|  |  | 
|  | DRM_DEBUG("afbc left %d right %d\n", afbc_left, afbc_right); | 
|  |  | 
|  | priv->viu.vpp_vsc_start_phase_step = ratio_y << 6; | 
|  |  | 
|  | priv->viu.vpp_vsc_ini_phase = vphase << 8; | 
|  | priv->viu.vpp_vsc_phase_ctrl = (1 << 13) | (4 << 8) | | 
|  | vphase_repeat_skip; | 
|  |  | 
|  | priv->viu.vd1_if0_luma_x0 = VD_X_START(hd_start_lines) | | 
|  | VD_X_END(hd_end_lines); | 
|  | priv->viu.vd1_if0_chroma_x0 = VD_X_START(hd_start_lines >> 1) | | 
|  | VD_X_END(hd_end_lines >> 1); | 
|  |  | 
|  | priv->viu.viu_vd1_fmt_w = | 
|  | VD_H_WIDTH(hd_end_lines - hd_start_lines + 1) | | 
|  | VD_V_WIDTH(hd_end_lines/2 - hd_start_lines/2 + 1); | 
|  |  | 
|  | priv->viu.vd1_afbc_vd_cfmt_w = | 
|  | AFBC_VD_H_WIDTH(afbc_right - afbc_left) | | 
|  | AFBC_VD_V_WIDTH(afbc_right / 2 - afbc_left / 2); | 
|  |  | 
|  | priv->viu.vd1_afbc_vd_cfmt_h = | 
|  | AFBC_VD_HEIGHT((afbc_bottom - afbc_top) / 2); | 
|  |  | 
|  | priv->viu.vd1_afbc_mif_hor_scope = AFBC_MIF_BLK_BGN_H(afbc_left / 32) | | 
|  | AFBC_MIF_BLK_END_H((afbc_right / 32) - 1); | 
|  |  | 
|  | priv->viu.vd1_afbc_mif_ver_scope = AFBC_MIF_BLK_BGN_V(afbc_top / 4) | | 
|  | AFBC_MIF_BLK_END_H((afbc_bottom / 4) - 1); | 
|  |  | 
|  | priv->viu.vd1_afbc_size_out = | 
|  | AFBC_HSIZE_OUT(afbc_right - afbc_left) | | 
|  | AFBC_VSIZE_OUT(afbc_bottom - afbc_top); | 
|  |  | 
|  | priv->viu.vd1_afbc_pixel_hor_scope = | 
|  | AFBC_DEC_PIXEL_BGN_H(hd_start_lines - afbc_left) | | 
|  | AFBC_DEC_PIXEL_END_H(hd_end_lines - afbc_left); | 
|  |  | 
|  | priv->viu.vd1_afbc_pixel_ver_scope = | 
|  | AFBC_DEC_PIXEL_BGN_V(vd_start_lines - afbc_top) | | 
|  | AFBC_DEC_PIXEL_END_V(vd_end_lines - afbc_top); | 
|  |  | 
|  | priv->viu.vd1_afbc_size_in = | 
|  | AFBC_HSIZE_IN(afbc_right - afbc_left) | | 
|  | AFBC_VSIZE_IN(afbc_bottom_src - afbc_top_src); | 
|  |  | 
|  | priv->viu.vd1_if0_luma_y0 = VD_Y_START(vd_start_lines) | | 
|  | VD_Y_END(vd_end_lines); | 
|  |  | 
|  | priv->viu.vd1_if0_chroma_y0 = VD_Y_START(vd_start_lines >> 1) | | 
|  | VD_Y_END(vd_end_lines >> 1); | 
|  |  | 
|  | priv->viu.vpp_pic_in_height = h_in; | 
|  |  | 
|  | priv->viu.vpp_postblend_vd1_h_start_end = VD_H_START(hsc_startp) | | 
|  | VD_H_END(hsc_endp); | 
|  | priv->viu.vpp_blend_vd2_h_start_end = VD_H_START(hd_start_lines) | | 
|  | VD_H_END(hd_end_lines); | 
|  | priv->viu.vpp_hsc_region12_startp = VD_REGION13_END(0) | | 
|  | VD_REGION24_START(hsc_startp); | 
|  | priv->viu.vpp_hsc_region34_startp = | 
|  | VD_REGION13_END(hsc_startp) | | 
|  | VD_REGION24_START(hsc_endp - hsc_startp); | 
|  | priv->viu.vpp_hsc_region4_endp = hsc_endp - hsc_startp; | 
|  | priv->viu.vpp_hsc_start_phase_step = ratio_x << 6; | 
|  | priv->viu.vpp_hsc_region1_phase_slope = 0; | 
|  | priv->viu.vpp_hsc_region3_phase_slope = 0; | 
|  | priv->viu.vpp_hsc_phase_ctrl = (1 << 21) | (4 << 16); | 
|  |  | 
|  | priv->viu.vpp_line_in_length = hd_end_lines - hd_start_lines + 1; | 
|  | priv->viu.vpp_preblend_h_size = hd_end_lines - hd_start_lines + 1; | 
|  |  | 
|  | priv->viu.vpp_postblend_vd1_v_start_end = VD_V_START(vsc_startp) | | 
|  | VD_V_END(vsc_endp); | 
|  | priv->viu.vpp_blend_vd2_v_start_end = | 
|  | VD2_V_START((vd_end_lines + 1) >> 1) | | 
|  | VD2_V_END(vd_end_lines); | 
|  |  | 
|  | priv->viu.vpp_vsc_region12_startp = 0; | 
|  | priv->viu.vpp_vsc_region34_startp = | 
|  | VD_REGION13_END(vsc_endp - vsc_startp) | | 
|  | VD_REGION24_START(vsc_endp - vsc_startp); | 
|  | priv->viu.vpp_vsc_region4_endp = vsc_endp - vsc_startp; | 
|  | priv->viu.vpp_vsc_start_phase_step = ratio_y << 6; | 
|  | } | 
|  |  | 
|  | static void meson_overlay_atomic_update(struct drm_plane *plane, | 
|  | struct drm_atomic_state *state) | 
|  | { | 
|  | struct meson_overlay *meson_overlay = to_meson_overlay(plane); | 
|  | struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, | 
|  | plane); | 
|  | struct drm_framebuffer *fb = new_state->fb; | 
|  | struct meson_drm *priv = meson_overlay->priv; | 
|  | struct drm_gem_cma_object *gem; | 
|  | unsigned long flags; | 
|  | bool interlace_mode; | 
|  |  | 
|  | DRM_DEBUG_DRIVER("\n"); | 
|  |  | 
|  | interlace_mode = new_state->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE; | 
|  |  | 
|  | spin_lock_irqsave(&priv->drm->event_lock, flags); | 
|  |  | 
|  | if ((fb->modifier & DRM_FORMAT_MOD_AMLOGIC_FBC(0, 0)) == | 
|  | DRM_FORMAT_MOD_AMLOGIC_FBC(0, 0)) { | 
|  | priv->viu.vd1_afbc = true; | 
|  |  | 
|  | priv->viu.vd1_afbc_mode = AFBC_MIF_URGENT(3) | | 
|  | AFBC_HOLD_LINE_NUM(8) | | 
|  | AFBC_BURST_LEN(2); | 
|  |  | 
|  | if (fb->modifier & DRM_FORMAT_MOD_AMLOGIC_FBC(0, | 
|  | AMLOGIC_FBC_OPTION_MEM_SAVING)) | 
|  | priv->viu.vd1_afbc_mode |= AFBC_BLK_MEM_MODE; | 
|  |  | 
|  | if ((fb->modifier & __fourcc_mod_amlogic_layout_mask) == | 
|  | AMLOGIC_FBC_LAYOUT_SCATTER) | 
|  | priv->viu.vd1_afbc_mode |= AFBC_SCATTER_MODE; | 
|  |  | 
|  | priv->viu.vd1_afbc_en = 0x1600 | AFBC_DEC_ENABLE; | 
|  |  | 
|  | priv->viu.vd1_afbc_conv_ctrl = AFBC_CONV_LBUF_LEN(256); | 
|  |  | 
|  | priv->viu.vd1_afbc_dec_def_color = AFBC_DEF_COLOR_Y(1023); | 
|  |  | 
|  | /* 420: horizontal / 2, vertical / 4 */ | 
|  | priv->viu.vd1_afbc_vd_cfmt_ctrl = AFBC_HORZ_RPT_PIXEL0 | | 
|  | AFBC_HORZ_Y_C_RATIO(1) | | 
|  | AFBC_HORZ_FMT_EN | | 
|  | AFBC_VERT_RPT_LINE0 | | 
|  | AFBC_VERT_INITIAL_PHASE(12) | | 
|  | AFBC_VERT_PHASE_STEP(8) | | 
|  | AFBC_VERT_FMT_EN; | 
|  |  | 
|  | switch (fb->format->format) { | 
|  | /* AFBC Only formats */ | 
|  | case DRM_FORMAT_YUV420_10BIT: | 
|  | priv->viu.vd1_afbc_mode |= | 
|  | AFBC_COMPBITS_YUV(AFBC_COMPBITS_10BIT); | 
|  | priv->viu.vd1_afbc_dec_def_color |= | 
|  | AFBC_DEF_COLOR_U(512) | | 
|  | AFBC_DEF_COLOR_V(512); | 
|  | break; | 
|  | case DRM_FORMAT_YUV420_8BIT: | 
|  | priv->viu.vd1_afbc_dec_def_color |= | 
|  | AFBC_DEF_COLOR_U(128) | | 
|  | AFBC_DEF_COLOR_V(128); | 
|  | break; | 
|  | } | 
|  |  | 
|  | priv->viu.vd1_if0_gen_reg = 0; | 
|  | priv->viu.vd1_if0_canvas0 = 0; | 
|  | priv->viu.viu_vd1_fmt_ctrl = 0; | 
|  | } else { | 
|  | priv->viu.vd1_afbc = false; | 
|  |  | 
|  | priv->viu.vd1_if0_gen_reg = VD_URGENT_CHROMA | | 
|  | VD_URGENT_LUMA | | 
|  | VD_HOLD_LINES(9) | | 
|  | VD_CHRO_RPT_LASTL_CTRL | | 
|  | VD_ENABLE; | 
|  | } | 
|  |  | 
|  | /* Setup scaler params */ | 
|  | meson_overlay_setup_scaler_params(priv, plane, interlace_mode); | 
|  |  | 
|  | priv->viu.vd1_if0_repeat_loop = 0; | 
|  | priv->viu.vd1_if0_luma0_rpt_pat = interlace_mode ? 8 : 0; | 
|  | priv->viu.vd1_if0_chroma0_rpt_pat = interlace_mode ? 8 : 0; | 
|  | priv->viu.vd1_range_map_y = 0; | 
|  | priv->viu.vd1_range_map_cb = 0; | 
|  | priv->viu.vd1_range_map_cr = 0; | 
|  |  | 
|  | /* Default values for RGB888/YUV444 */ | 
|  | priv->viu.vd1_if0_gen_reg2 = 0; | 
|  | priv->viu.viu_vd1_fmt_ctrl = 0; | 
|  |  | 
|  | /* None will match for AFBC Only formats */ | 
|  | switch (fb->format->format) { | 
|  | /* TOFIX DRM_FORMAT_RGB888 should be supported */ | 
|  | case DRM_FORMAT_YUYV: | 
|  | priv->viu.vd1_if0_gen_reg |= VD_BYTES_PER_PIXEL(1); | 
|  | priv->viu.vd1_if0_canvas0 = | 
|  | CANVAS_ADDR2(priv->canvas_id_vd1_0) | | 
|  | CANVAS_ADDR1(priv->canvas_id_vd1_0) | | 
|  | CANVAS_ADDR0(priv->canvas_id_vd1_0); | 
|  | priv->viu.viu_vd1_fmt_ctrl = VD_HORZ_Y_C_RATIO(1) | /* /2 */ | 
|  | VD_HORZ_FMT_EN | | 
|  | VD_VERT_RPT_LINE0 | | 
|  | VD_VERT_INITIAL_PHASE(12) | | 
|  | VD_VERT_PHASE_STEP(16) | /* /2 */ | 
|  | VD_VERT_FMT_EN; | 
|  | break; | 
|  | case DRM_FORMAT_NV12: | 
|  | case DRM_FORMAT_NV21: | 
|  | priv->viu.vd1_if0_gen_reg |= VD_SEPARATE_EN; | 
|  | priv->viu.vd1_if0_canvas0 = | 
|  | CANVAS_ADDR2(priv->canvas_id_vd1_1) | | 
|  | CANVAS_ADDR1(priv->canvas_id_vd1_1) | | 
|  | CANVAS_ADDR0(priv->canvas_id_vd1_0); | 
|  | if (fb->format->format == DRM_FORMAT_NV12) | 
|  | priv->viu.vd1_if0_gen_reg2 = VD_COLOR_MAP(1); | 
|  | else | 
|  | priv->viu.vd1_if0_gen_reg2 = VD_COLOR_MAP(2); | 
|  | priv->viu.viu_vd1_fmt_ctrl = VD_HORZ_Y_C_RATIO(1) | /* /2 */ | 
|  | VD_HORZ_FMT_EN | | 
|  | VD_VERT_RPT_LINE0 | | 
|  | VD_VERT_INITIAL_PHASE(12) | | 
|  | VD_VERT_PHASE_STEP(8) | /* /4 */ | 
|  | VD_VERT_FMT_EN; | 
|  | break; | 
|  | case DRM_FORMAT_YUV444: | 
|  | case DRM_FORMAT_YUV422: | 
|  | case DRM_FORMAT_YUV420: | 
|  | case DRM_FORMAT_YUV411: | 
|  | case DRM_FORMAT_YUV410: | 
|  | priv->viu.vd1_if0_gen_reg |= VD_SEPARATE_EN; | 
|  | priv->viu.vd1_if0_canvas0 = | 
|  | CANVAS_ADDR2(priv->canvas_id_vd1_2) | | 
|  | CANVAS_ADDR1(priv->canvas_id_vd1_1) | | 
|  | CANVAS_ADDR0(priv->canvas_id_vd1_0); | 
|  | switch (fb->format->format) { | 
|  | case DRM_FORMAT_YUV422: | 
|  | priv->viu.viu_vd1_fmt_ctrl = | 
|  | VD_HORZ_Y_C_RATIO(1) | /* /2 */ | 
|  | VD_HORZ_FMT_EN | | 
|  | VD_VERT_RPT_LINE0 | | 
|  | VD_VERT_INITIAL_PHASE(12) | | 
|  | VD_VERT_PHASE_STEP(16) | /* /2 */ | 
|  | VD_VERT_FMT_EN; | 
|  | break; | 
|  | case DRM_FORMAT_YUV420: | 
|  | priv->viu.viu_vd1_fmt_ctrl = | 
|  | VD_HORZ_Y_C_RATIO(1) | /* /2 */ | 
|  | VD_HORZ_FMT_EN | | 
|  | VD_VERT_RPT_LINE0 | | 
|  | VD_VERT_INITIAL_PHASE(12) | | 
|  | VD_VERT_PHASE_STEP(8) | /* /4 */ | 
|  | VD_VERT_FMT_EN; | 
|  | break; | 
|  | case DRM_FORMAT_YUV411: | 
|  | priv->viu.viu_vd1_fmt_ctrl = | 
|  | VD_HORZ_Y_C_RATIO(2) | /* /4 */ | 
|  | VD_HORZ_FMT_EN | | 
|  | VD_VERT_RPT_LINE0 | | 
|  | VD_VERT_INITIAL_PHASE(12) | | 
|  | VD_VERT_PHASE_STEP(16) | /* /2 */ | 
|  | VD_VERT_FMT_EN; | 
|  | break; | 
|  | case DRM_FORMAT_YUV410: | 
|  | priv->viu.viu_vd1_fmt_ctrl = | 
|  | VD_HORZ_Y_C_RATIO(2) | /* /4 */ | 
|  | VD_HORZ_FMT_EN | | 
|  | VD_VERT_RPT_LINE0 | | 
|  | VD_VERT_INITIAL_PHASE(12) | | 
|  | VD_VERT_PHASE_STEP(8) | /* /4 */ | 
|  | VD_VERT_FMT_EN; | 
|  | break; | 
|  | } | 
|  | break; | 
|  | } | 
|  |  | 
|  | /* Update Canvas with buffer address */ | 
|  | priv->viu.vd1_planes = fb->format->num_planes; | 
|  |  | 
|  | switch (priv->viu.vd1_planes) { | 
|  | case 3: | 
|  | gem = drm_fb_cma_get_gem_obj(fb, 2); | 
|  | priv->viu.vd1_addr2 = gem->paddr + fb->offsets[2]; | 
|  | priv->viu.vd1_stride2 = fb->pitches[2]; | 
|  | priv->viu.vd1_height2 = | 
|  | drm_format_info_plane_height(fb->format, | 
|  | fb->height, 2); | 
|  | DRM_DEBUG("plane 2 addr 0x%x stride %d height %d\n", | 
|  | priv->viu.vd1_addr2, | 
|  | priv->viu.vd1_stride2, | 
|  | priv->viu.vd1_height2); | 
|  | fallthrough; | 
|  | case 2: | 
|  | gem = drm_fb_cma_get_gem_obj(fb, 1); | 
|  | priv->viu.vd1_addr1 = gem->paddr + fb->offsets[1]; | 
|  | priv->viu.vd1_stride1 = fb->pitches[1]; | 
|  | priv->viu.vd1_height1 = | 
|  | drm_format_info_plane_height(fb->format, | 
|  | fb->height, 1); | 
|  | DRM_DEBUG("plane 1 addr 0x%x stride %d height %d\n", | 
|  | priv->viu.vd1_addr1, | 
|  | priv->viu.vd1_stride1, | 
|  | priv->viu.vd1_height1); | 
|  | fallthrough; | 
|  | case 1: | 
|  | gem = drm_fb_cma_get_gem_obj(fb, 0); | 
|  | priv->viu.vd1_addr0 = gem->paddr + fb->offsets[0]; | 
|  | priv->viu.vd1_stride0 = fb->pitches[0]; | 
|  | priv->viu.vd1_height0 = | 
|  | drm_format_info_plane_height(fb->format, | 
|  | fb->height, 0); | 
|  | DRM_DEBUG("plane 0 addr 0x%x stride %d height %d\n", | 
|  | priv->viu.vd1_addr0, | 
|  | priv->viu.vd1_stride0, | 
|  | priv->viu.vd1_height0); | 
|  | } | 
|  |  | 
|  | if (priv->viu.vd1_afbc) { | 
|  | if (priv->viu.vd1_afbc_mode & AFBC_SCATTER_MODE) { | 
|  | /* | 
|  | * In Scatter mode, the header contains the physical | 
|  | * body content layout, thus the body content | 
|  | * size isn't needed. | 
|  | */ | 
|  | priv->viu.vd1_afbc_head_addr = priv->viu.vd1_addr0 >> 4; | 
|  | priv->viu.vd1_afbc_body_addr = 0; | 
|  | } else { | 
|  | /* Default mode is 4k per superblock */ | 
|  | unsigned long block_size = 4096; | 
|  | unsigned long body_size; | 
|  |  | 
|  | /* 8bit mem saving mode is 3072bytes per superblock */ | 
|  | if (priv->viu.vd1_afbc_mode & AFBC_BLK_MEM_MODE) | 
|  | block_size = 3072; | 
|  |  | 
|  | body_size = (ALIGN(priv->viu.vd1_stride0, 64) / 64) * | 
|  | (ALIGN(priv->viu.vd1_height0, 32) / 32) * | 
|  | block_size; | 
|  |  | 
|  | priv->viu.vd1_afbc_body_addr = priv->viu.vd1_addr0 >> 4; | 
|  | /* Header is after body content */ | 
|  | priv->viu.vd1_afbc_head_addr = (priv->viu.vd1_addr0 + | 
|  | body_size) >> 4; | 
|  | } | 
|  | } | 
|  |  | 
|  | priv->viu.vd1_enabled = true; | 
|  |  | 
|  | spin_unlock_irqrestore(&priv->drm->event_lock, flags); | 
|  |  | 
|  | DRM_DEBUG_DRIVER("\n"); | 
|  | } | 
|  |  | 
|  | static void meson_overlay_atomic_disable(struct drm_plane *plane, | 
|  | struct drm_atomic_state *state) | 
|  | { | 
|  | struct meson_overlay *meson_overlay = to_meson_overlay(plane); | 
|  | struct meson_drm *priv = meson_overlay->priv; | 
|  |  | 
|  | DRM_DEBUG_DRIVER("\n"); | 
|  |  | 
|  | priv->viu.vd1_enabled = false; | 
|  |  | 
|  | /* Disable VD1 */ | 
|  | if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) { | 
|  | writel_relaxed(0, priv->io_base + _REG(VD1_BLEND_SRC_CTRL)); | 
|  | writel_relaxed(0, priv->io_base + _REG(VD2_BLEND_SRC_CTRL)); | 
|  | writel_relaxed(0, priv->io_base + _REG(VD1_IF0_GEN_REG + 0x17b0)); | 
|  | writel_relaxed(0, priv->io_base + _REG(VD2_IF0_GEN_REG + 0x17b0)); | 
|  | } else | 
|  | writel_bits_relaxed(VPP_VD1_POSTBLEND | VPP_VD1_PREBLEND, 0, | 
|  | priv->io_base + _REG(VPP_MISC)); | 
|  |  | 
|  | } | 
|  |  | 
|  | static const struct drm_plane_helper_funcs meson_overlay_helper_funcs = { | 
|  | .atomic_check	= meson_overlay_atomic_check, | 
|  | .atomic_disable	= meson_overlay_atomic_disable, | 
|  | .atomic_update	= meson_overlay_atomic_update, | 
|  | .prepare_fb	= drm_gem_plane_helper_prepare_fb, | 
|  | }; | 
|  |  | 
|  | static bool meson_overlay_format_mod_supported(struct drm_plane *plane, | 
|  | u32 format, u64 modifier) | 
|  | { | 
|  | if (modifier == DRM_FORMAT_MOD_LINEAR && | 
|  | format != DRM_FORMAT_YUV420_8BIT && | 
|  | format != DRM_FORMAT_YUV420_10BIT) | 
|  | return true; | 
|  |  | 
|  | if ((modifier & DRM_FORMAT_MOD_AMLOGIC_FBC(0, 0)) == | 
|  | DRM_FORMAT_MOD_AMLOGIC_FBC(0, 0)) { | 
|  | unsigned int layout = modifier & | 
|  | DRM_FORMAT_MOD_AMLOGIC_FBC( | 
|  | __fourcc_mod_amlogic_layout_mask, 0); | 
|  | unsigned int options = | 
|  | (modifier >> __fourcc_mod_amlogic_options_shift) & | 
|  | __fourcc_mod_amlogic_options_mask; | 
|  |  | 
|  | if (format != DRM_FORMAT_YUV420_8BIT && | 
|  | format != DRM_FORMAT_YUV420_10BIT) { | 
|  | DRM_DEBUG_KMS("%llx invalid format 0x%08x\n", | 
|  | modifier, format); | 
|  | return false; | 
|  | } | 
|  |  | 
|  | if (layout != AMLOGIC_FBC_LAYOUT_BASIC && | 
|  | layout != AMLOGIC_FBC_LAYOUT_SCATTER) { | 
|  | DRM_DEBUG_KMS("%llx invalid layout %x\n", | 
|  | modifier, layout); | 
|  | return false; | 
|  | } | 
|  |  | 
|  | if (options && | 
|  | options != AMLOGIC_FBC_OPTION_MEM_SAVING) { | 
|  | DRM_DEBUG_KMS("%llx invalid layout %x\n", | 
|  | modifier, layout); | 
|  | return false; | 
|  | } | 
|  |  | 
|  | return true; | 
|  | } | 
|  |  | 
|  | DRM_DEBUG_KMS("invalid modifier %llx for format 0x%08x\n", | 
|  | modifier, format); | 
|  |  | 
|  | return false; | 
|  | } | 
|  |  | 
|  | static const struct drm_plane_funcs meson_overlay_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, | 
|  | .format_mod_supported   = meson_overlay_format_mod_supported, | 
|  | }; | 
|  |  | 
|  | static const uint32_t supported_drm_formats[] = { | 
|  | DRM_FORMAT_YUYV, | 
|  | DRM_FORMAT_NV12, | 
|  | DRM_FORMAT_NV21, | 
|  | DRM_FORMAT_YUV444, | 
|  | DRM_FORMAT_YUV422, | 
|  | DRM_FORMAT_YUV420, | 
|  | DRM_FORMAT_YUV411, | 
|  | DRM_FORMAT_YUV410, | 
|  | DRM_FORMAT_YUV420_8BIT, /* Amlogic FBC Only */ | 
|  | DRM_FORMAT_YUV420_10BIT, /* Amlogic FBC Only */ | 
|  | }; | 
|  |  | 
|  | static const uint64_t format_modifiers[] = { | 
|  | DRM_FORMAT_MOD_AMLOGIC_FBC(AMLOGIC_FBC_LAYOUT_SCATTER, | 
|  | AMLOGIC_FBC_OPTION_MEM_SAVING), | 
|  | DRM_FORMAT_MOD_AMLOGIC_FBC(AMLOGIC_FBC_LAYOUT_BASIC, | 
|  | AMLOGIC_FBC_OPTION_MEM_SAVING), | 
|  | DRM_FORMAT_MOD_AMLOGIC_FBC(AMLOGIC_FBC_LAYOUT_SCATTER, 0), | 
|  | DRM_FORMAT_MOD_AMLOGIC_FBC(AMLOGIC_FBC_LAYOUT_BASIC, 0), | 
|  | DRM_FORMAT_MOD_LINEAR, | 
|  | DRM_FORMAT_MOD_INVALID, | 
|  | }; | 
|  |  | 
|  | int meson_overlay_create(struct meson_drm *priv) | 
|  | { | 
|  | struct meson_overlay *meson_overlay; | 
|  | struct drm_plane *plane; | 
|  |  | 
|  | DRM_DEBUG_DRIVER("\n"); | 
|  |  | 
|  | meson_overlay = devm_kzalloc(priv->drm->dev, sizeof(*meson_overlay), | 
|  | GFP_KERNEL); | 
|  | if (!meson_overlay) | 
|  | return -ENOMEM; | 
|  |  | 
|  | meson_overlay->priv = priv; | 
|  | plane = &meson_overlay->base; | 
|  |  | 
|  | drm_universal_plane_init(priv->drm, plane, 0xFF, | 
|  | &meson_overlay_funcs, | 
|  | supported_drm_formats, | 
|  | ARRAY_SIZE(supported_drm_formats), | 
|  | format_modifiers, | 
|  | DRM_PLANE_TYPE_OVERLAY, "meson_overlay_plane"); | 
|  |  | 
|  | drm_plane_helper_add(plane, &meson_overlay_helper_funcs); | 
|  |  | 
|  | /* For now, VD Overlay plane is always on the back */ | 
|  | drm_plane_create_zpos_immutable_property(plane, 0); | 
|  |  | 
|  | priv->overlay_plane = plane; | 
|  |  | 
|  | DRM_DEBUG_DRIVER("\n"); | 
|  |  | 
|  | return 0; | 
|  | } |