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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 <display.h>
#include <dm.h>
#include <efi_loader.h>
#include <fdt_support.h>
#include <log.h>
#include <part.h>
#include <linux/sizes.h>
#include <asm/arch/mem.h>
#include <asm/global_data.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_plat *uc_plat = dev_get_uclass_plat(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_plat *plat = dev_get_uclass_plat(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 = sizeof(struct meson_vpu_priv),
.flags = DM_FLAG_PRE_RELOC | DM_FLAG_LEAVE_PD_ON,
};
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