GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/video/meson/meson_vpu.c

@@ -0,0 +1,202 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Amlogic Meson Video Processing Unit driver
+ *
+ * Copyright (c) 2018 BayLibre, SAS.
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#include "meson_vpu.h"
+#include <efi_loader.h>
+#include <dm/device-internal.h>
+#include <dm/uclass-internal.h>
+#include <fdt_support.h>
+#include <linux/sizes.h>
+#include <asm/arch/mem.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 };
+
+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_PAGE_SHIFT,
+			   EFI_RESERVED_MEMORY_TYPE, false);
+#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,
+};