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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Amlogic Meson Video Processing Unit driver
- *
- * Copyright (c) 2018 BayLibre, SAS.
- * Author: Neil Armstrong <narmstrong@baylibre.com>
- */
- #include <common.h>
- #include <display.h>
- #include <dm.h>
- #include <efi_loader.h>
- #include <fdt_support.h>
- #include <part.h>
- #include <linux/sizes.h>
- #include <asm/arch/mem.h>
- #include <dm/device-internal.h>
- #include <dm/uclass-internal.h>
- #include "meson_vpu.h"
- #include "meson_registers.h"
- #include "simplefb_common.h"
- #define MESON_VPU_OVERSCAN SZ_64K
- /* Static variable for use in meson_vpu_rsv_fb() */
- static struct meson_framebuffer {
- u64 base;
- u64 fb_size;
- unsigned int xsize;
- unsigned int ysize;
- bool is_cvbs;
- } meson_fb = { 0 };
- bool meson_vpu_is_compatible(struct meson_vpu_priv *priv,
- enum vpu_compatible family)
- {
- enum vpu_compatible compat = dev_get_driver_data(priv->dev);
- return compat == family;
- }
- static int meson_vpu_setup_mode(struct udevice *dev, struct udevice *disp)
- {
- struct video_uc_platdata *uc_plat = dev_get_uclass_platdata(dev);
- struct video_priv *uc_priv = dev_get_uclass_priv(dev);
- struct display_timing timing;
- bool is_cvbs = false;
- int ret = 0;
- if (disp) {
- ret = display_read_timing(disp, &timing);
- if (ret) {
- debug("%s: Failed to read timings\n", __func__);
- goto cvbs;
- }
- uc_priv->xsize = timing.hactive.typ;
- uc_priv->ysize = timing.vactive.typ;
- ret = display_enable(disp, 0, &timing);
- if (ret)
- goto cvbs;
- } else {
- cvbs:
- /* CVBS has a fixed 720x480i (NTSC) and 720x576i (PAL) */
- is_cvbs = true;
- timing.flags = DISPLAY_FLAGS_INTERLACED;
- uc_priv->xsize = 720;
- uc_priv->ysize = 576;
- }
- uc_priv->bpix = VPU_MAX_LOG2_BPP;
- meson_fb.is_cvbs = is_cvbs;
- meson_fb.xsize = uc_priv->xsize;
- meson_fb.ysize = uc_priv->ysize;
- /* Move the framebuffer to the end of addressable ram */
- meson_fb.fb_size = ALIGN(meson_fb.xsize * meson_fb.ysize *
- ((1 << VPU_MAX_LOG2_BPP) / 8) +
- MESON_VPU_OVERSCAN, EFI_PAGE_SIZE);
- meson_fb.base = gd->bd->bi_dram[0].start +
- gd->bd->bi_dram[0].size - meson_fb.fb_size;
- /* Override the framebuffer address */
- uc_plat->base = meson_fb.base;
- meson_vpu_setup_plane(dev, timing.flags & DISPLAY_FLAGS_INTERLACED);
- meson_vpu_setup_venc(dev, &timing, is_cvbs);
- meson_vpu_setup_vclk(dev, &timing, is_cvbs);
- video_set_flush_dcache(dev, 1);
- return 0;
- }
- static const struct udevice_id meson_vpu_ids[] = {
- { .compatible = "amlogic,meson-gxbb-vpu", .data = VPU_COMPATIBLE_GXBB },
- { .compatible = "amlogic,meson-gxl-vpu", .data = VPU_COMPATIBLE_GXL },
- { .compatible = "amlogic,meson-gxm-vpu", .data = VPU_COMPATIBLE_GXM },
- { .compatible = "amlogic,meson-g12a-vpu", .data = VPU_COMPATIBLE_G12A },
- { }
- };
- static int meson_vpu_probe(struct udevice *dev)
- {
- struct meson_vpu_priv *priv = dev_get_priv(dev);
- struct udevice *disp;
- int ret;
- /* Before relocation we don't need to do anything */
- if (!(gd->flags & GD_FLG_RELOC))
- return 0;
- priv->dev = dev;
- priv->io_base = dev_remap_addr_index(dev, 0);
- if (!priv->io_base)
- return -EINVAL;
- priv->hhi_base = dev_remap_addr_index(dev, 1);
- if (!priv->hhi_base)
- return -EINVAL;
- priv->dmc_base = dev_remap_addr_index(dev, 2);
- if (!priv->dmc_base)
- return -EINVAL;
- meson_vpu_init(dev);
- /* probe the display */
- ret = uclass_get_device(UCLASS_DISPLAY, 0, &disp);
- return meson_vpu_setup_mode(dev, ret ? NULL : disp);
- }
- static int meson_vpu_bind(struct udevice *dev)
- {
- struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
- plat->size = VPU_MAX_WIDTH * VPU_MAX_HEIGHT *
- (1 << VPU_MAX_LOG2_BPP) / 8;
- return 0;
- }
- #if defined(CONFIG_VIDEO_DT_SIMPLEFB)
- static void meson_vpu_setup_simplefb(void *fdt)
- {
- const char *pipeline = NULL;
- u64 mem_start, mem_size;
- int offset, ret;
- if (meson_fb.is_cvbs)
- pipeline = "vpu-cvbs";
- else
- pipeline = "vpu-hdmi";
- offset = meson_simplefb_fdt_match(fdt, pipeline);
- if (offset < 0) {
- eprintf("Cannot setup simplefb: node not found\n");
- /* If simplefb is missing, add it as reserved memory */
- meson_board_add_reserved_memory(fdt, meson_fb.base,
- meson_fb.fb_size);
- return;
- }
- /*
- * SimpleFB will try to iomap the framebuffer, so we can't use
- * fdt_add_mem_rsv on the memory area. Instead, the FB is stored
- * at the end of the RAM and we strip this portion from the kernel
- * allowed region
- */
- mem_start = gd->bd->bi_dram[0].start;
- mem_size = gd->bd->bi_dram[0].size - meson_fb.fb_size;
- ret = fdt_fixup_memory_banks(fdt, &mem_start, &mem_size, 1);
- if (ret) {
- eprintf("Cannot setup simplefb: Error reserving memory\n");
- return;
- }
- ret = fdt_setup_simplefb_node(fdt, offset, meson_fb.base,
- meson_fb.xsize, meson_fb.ysize,
- meson_fb.xsize * 4, "x8r8g8b8");
- if (ret)
- eprintf("Cannot setup simplefb: Error setting properties\n");
- }
- #endif
- void meson_vpu_rsv_fb(void *fdt)
- {
- if (!meson_fb.base || !meson_fb.xsize || !meson_fb.ysize)
- return;
- #if defined(CONFIG_EFI_LOADER)
- efi_add_memory_map(meson_fb.base, meson_fb.fb_size,
- EFI_RESERVED_MEMORY_TYPE);
- #endif
- #if defined(CONFIG_VIDEO_DT_SIMPLEFB)
- meson_vpu_setup_simplefb(fdt);
- #endif
- }
- U_BOOT_DRIVER(meson_vpu) = {
- .name = "meson_vpu",
- .id = UCLASS_VIDEO,
- .of_match = meson_vpu_ids,
- .probe = meson_vpu_probe,
- .bind = meson_vpu_bind,
- .priv_auto_alloc_size = sizeof(struct meson_vpu_priv),
- .flags = DM_FLAG_PRE_RELOC | DM_FLAG_REMOVE_WITH_PD_ON,
- };
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