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u-boot/drivers/video/sunxi/sunxi_de2.c
Icenowy Zheng b29712e941 video: sunxi: de2: fix SimpleFB node creation when DE2 not probed 
Sometimes when a monitor without EDID information is plugged, the DE2
won't be probed (because of lack of timing information), but the HDMI
node is probed, thus a SimpleFB node with invalid information will be
populated.

Also detect whether DE2 is probed when creating SimpleFB node.

Fixes: be5b96f0e4 ("sunxi: setup simplefb for Allwinner DE2")
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-07-31 11:39:47 +05:30

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// SPDX-License-Identifier: GPL-2.0+
/*
* Allwinner DE2 display driver
*
* (C) Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net>
*/
#include <common.h>
#include <display.h>
#include <dm.h>
#include <edid.h>
#include <efi_loader.h>
#include <fdtdec.h>
#include <fdt_support.h>
#include <video.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/display2.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
#include "simplefb_common.h"
DECLARE_GLOBAL_DATA_PTR;
enum {
/* Maximum LCD size we support */
LCD_MAX_WIDTH = 3840,
LCD_MAX_HEIGHT = 2160,
LCD_MAX_LOG2_BPP = VIDEO_BPP32,
};
static void sunxi_de2_composer_init(void)
{
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
#ifdef CONFIG_MACH_SUN50I
u32 reg_value;
/* set SRAM for video use (A64 only) */
reg_value = readl(SUNXI_SRAMC_BASE + 0x04);
reg_value &= ~(0x01 << 24);
writel(reg_value, SUNXI_SRAMC_BASE + 0x04);
#endif
clock_set_pll10(432000000);
/* Set DE parent to pll10 */
clrsetbits_le32(&ccm->de_clk_cfg, CCM_DE2_CTRL_PLL_MASK,
CCM_DE2_CTRL_PLL10);
/* Set ahb gating to pass */
setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DE);
setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_DE);
/* Clock on */
setbits_le32(&ccm->de_clk_cfg, CCM_DE2_CTRL_GATE);
}
static void sunxi_de2_mode_set(int mux, const struct display_timing *mode,
int bpp, ulong address, bool is_composite)
{
ulong de_mux_base = (mux == 0) ?
SUNXI_DE2_MUX0_BASE : SUNXI_DE2_MUX1_BASE;
struct de_clk * const de_clk_regs =
(struct de_clk *)(SUNXI_DE2_BASE);
struct de_glb * const de_glb_regs =
(struct de_glb *)(de_mux_base +
SUNXI_DE2_MUX_GLB_REGS);
struct de_bld * const de_bld_regs =
(struct de_bld *)(de_mux_base +
SUNXI_DE2_MUX_BLD_REGS);
struct de_ui * const de_ui_regs =
(struct de_ui *)(de_mux_base +
SUNXI_DE2_MUX_CHAN_REGS +
SUNXI_DE2_MUX_CHAN_SZ * 1);
struct de_csc * const de_csc_regs =
(struct de_csc *)(de_mux_base +
SUNXI_DE2_MUX_DCSC_REGS);
u32 size = SUNXI_DE2_WH(mode->hactive.typ, mode->vactive.typ);
int channel;
u32 format;
/* enable clock */
#ifdef CONFIG_MACH_SUN8I_H3
setbits_le32(&de_clk_regs->rst_cfg, (mux == 0) ? 1 : 4);
#else
setbits_le32(&de_clk_regs->rst_cfg, BIT(mux));
#endif
setbits_le32(&de_clk_regs->gate_cfg, BIT(mux));
setbits_le32(&de_clk_regs->bus_cfg, BIT(mux));
clrbits_le32(&de_clk_regs->sel_cfg, 1);
writel(SUNXI_DE2_MUX_GLB_CTL_EN, &de_glb_regs->ctl);
writel(0, &de_glb_regs->status);
writel(1, &de_glb_regs->dbuff);
writel(size, &de_glb_regs->size);
for (channel = 0; channel < 4; channel++) {
void *ch = (void *)(de_mux_base + SUNXI_DE2_MUX_CHAN_REGS +
SUNXI_DE2_MUX_CHAN_SZ * channel);
memset(ch, 0, (channel == 0) ?
sizeof(struct de_vi) : sizeof(struct de_ui));
}
memset(de_bld_regs, 0, sizeof(struct de_bld));
writel(0x00000101, &de_bld_regs->fcolor_ctl);
writel(1, &de_bld_regs->route);
writel(0, &de_bld_regs->premultiply);
writel(0xff000000, &de_bld_regs->bkcolor);
writel(0x03010301, &de_bld_regs->bld_mode[0]);
writel(size, &de_bld_regs->output_size);
writel(mode->flags & DISPLAY_FLAGS_INTERLACED ? 2 : 0,
&de_bld_regs->out_ctl);
writel(0, &de_bld_regs->ck_ctl);
writel(0xff000000, &de_bld_regs->attr[0].fcolor);
writel(size, &de_bld_regs->attr[0].insize);
/* Disable all other units */
writel(0, de_mux_base + SUNXI_DE2_MUX_VSU_REGS);
writel(0, de_mux_base + SUNXI_DE2_MUX_GSU1_REGS);
writel(0, de_mux_base + SUNXI_DE2_MUX_GSU2_REGS);
writel(0, de_mux_base + SUNXI_DE2_MUX_GSU3_REGS);
writel(0, de_mux_base + SUNXI_DE2_MUX_FCE_REGS);
writel(0, de_mux_base + SUNXI_DE2_MUX_BWS_REGS);
writel(0, de_mux_base + SUNXI_DE2_MUX_LTI_REGS);
writel(0, de_mux_base + SUNXI_DE2_MUX_PEAK_REGS);
writel(0, de_mux_base + SUNXI_DE2_MUX_ASE_REGS);
writel(0, de_mux_base + SUNXI_DE2_MUX_FCC_REGS);
if (is_composite) {
/* set CSC coefficients */
writel(0x107, &de_csc_regs->coef11);
writel(0x204, &de_csc_regs->coef12);
writel(0x64, &de_csc_regs->coef13);
writel(0x4200, &de_csc_regs->coef14);
writel(0x1f68, &de_csc_regs->coef21);
writel(0x1ed6, &de_csc_regs->coef22);
writel(0x1c2, &de_csc_regs->coef23);
writel(0x20200, &de_csc_regs->coef24);
writel(0x1c2, &de_csc_regs->coef31);
writel(0x1e87, &de_csc_regs->coef32);
writel(0x1fb7, &de_csc_regs->coef33);
writel(0x20200, &de_csc_regs->coef34);
/* enable CSC unit */
writel(1, &de_csc_regs->csc_ctl);
} else {
writel(0, &de_csc_regs->csc_ctl);
}
switch (bpp) {
case 16:
format = SUNXI_DE2_UI_CFG_ATTR_FMT(SUNXI_DE2_FORMAT_RGB_565);
break;
case 32:
default:
format = SUNXI_DE2_UI_CFG_ATTR_FMT(SUNXI_DE2_FORMAT_XRGB_8888);
break;
}
writel(SUNXI_DE2_UI_CFG_ATTR_EN | format, &de_ui_regs->cfg[0].attr);
writel(size, &de_ui_regs->cfg[0].size);
writel(0, &de_ui_regs->cfg[0].coord);
writel((bpp / 8) * mode->hactive.typ, &de_ui_regs->cfg[0].pitch);
writel(address, &de_ui_regs->cfg[0].top_laddr);
writel(size, &de_ui_regs->ovl_size);
/* apply settings */
writel(1, &de_glb_regs->dbuff);
}
static int sunxi_de2_init(struct udevice *dev, ulong fbbase,
enum video_log2_bpp l2bpp,
struct udevice *disp, int mux, bool is_composite)
{
struct video_priv *uc_priv = dev_get_uclass_priv(dev);
struct display_timing timing;
struct display_plat *disp_uc_plat;
int ret;
disp_uc_plat = dev_get_uclass_platdata(disp);
debug("Using device '%s', disp_uc_priv=%p\n", disp->name, disp_uc_plat);
if (display_in_use(disp)) {
debug(" - device in use\n");
return -EBUSY;
}
disp_uc_plat->source_id = mux;
ret = device_probe(disp);
if (ret) {
debug("%s: device '%s' display won't probe (ret=%d)\n",
__func__, dev->name, ret);
return ret;
}
ret = display_read_timing(disp, &timing);
if (ret) {
debug("%s: Failed to read timings\n", __func__);
return ret;
}
sunxi_de2_composer_init();
sunxi_de2_mode_set(mux, &timing, 1 << l2bpp, fbbase, is_composite);
ret = display_enable(disp, 1 << l2bpp, &timing);
if (ret) {
debug("%s: Failed to enable display\n", __func__);
return ret;
}
uc_priv->xsize = timing.hactive.typ;
uc_priv->ysize = timing.vactive.typ;
uc_priv->bpix = l2bpp;
debug("fb=%lx, size=%d %d\n", fbbase, uc_priv->xsize, uc_priv->ysize);
#ifdef CONFIG_EFI_LOADER
efi_add_memory_map(fbbase,
ALIGN(timing.hactive.typ * timing.vactive.typ *
(1 << l2bpp) / 8, EFI_PAGE_SIZE) >> EFI_PAGE_SHIFT,
EFI_RESERVED_MEMORY_TYPE, false);
#endif
return 0;
}
static int sunxi_de2_probe(struct udevice *dev)
{
struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
struct udevice *disp;
int ret;
/* Before relocation we don't need to do anything */
if (!(gd->flags & GD_FLG_RELOC))
return 0;
ret = uclass_find_device_by_name(UCLASS_DISPLAY,
"sunxi_lcd", &disp);
if (!ret) {
int mux;
mux = 0;
ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, mux,
false);
if (!ret) {
video_set_flush_dcache(dev, 1);
return 0;
}
}
debug("%s: lcd display not found (ret=%d)\n", __func__, ret);
ret = uclass_find_device_by_name(UCLASS_DISPLAY,
"sunxi_dw_hdmi", &disp);
if (!ret) {
int mux;
if (IS_ENABLED(CONFIG_MACH_SUNXI_H3_H5))
mux = 0;
else
mux = 1;
ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, mux,
false);
if (!ret) {
video_set_flush_dcache(dev, 1);
return 0;
}
}
debug("%s: hdmi display not found (ret=%d)\n", __func__, ret);
ret = uclass_find_device_by_name(UCLASS_DISPLAY,
"sunxi_tve", &disp);
if (ret) {
debug("%s: tv not found (ret=%d)\n", __func__, ret);
return ret;
}
ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, 1, true);
if (ret)
return ret;
video_set_flush_dcache(dev, 1);
return 0;
}
static int sunxi_de2_bind(struct udevice *dev)
{
struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT *
(1 << LCD_MAX_LOG2_BPP) / 8;
return 0;
}
static const struct video_ops sunxi_de2_ops = {
};
U_BOOT_DRIVER(sunxi_de2) = {
.name = "sunxi_de2",
.id = UCLASS_VIDEO,
.ops = &sunxi_de2_ops,
.bind = sunxi_de2_bind,
.probe = sunxi_de2_probe,
.flags = DM_FLAG_PRE_RELOC,
};
U_BOOT_DEVICE(sunxi_de2) = {
.name = "sunxi_de2"
};
/*
* Simplefb support.
*/
#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_VIDEO_DT_SIMPLEFB)
int sunxi_simplefb_setup(void *blob)
{
struct udevice *de2, *hdmi, *lcd;
struct video_priv *de2_priv;
struct video_uc_platdata *de2_plat;
int mux;
int offset, ret;
u64 start, size;
const char *pipeline = NULL;
debug("Setting up simplefb\n");
if (IS_ENABLED(CONFIG_MACH_SUNXI_H3_H5))
mux = 0;
else
mux = 1;
/* Skip simplefb setting if DE2 / HDMI is not present */
ret = uclass_find_device_by_name(UCLASS_VIDEO,
"sunxi_de2", &de2);
if (ret) {
debug("DE2 not present\n");
return 0;
} else if (!device_active(de2)) {
debug("DE2 present but not probed\n");
return 0;
}
ret = uclass_find_device_by_name(UCLASS_DISPLAY,
"sunxi_dw_hdmi", &hdmi);
if (ret) {
debug("HDMI not present\n");
} else if (device_active(hdmi)) {
if (mux == 0)
pipeline = "mixer0-lcd0-hdmi";
else
pipeline = "mixer1-lcd1-hdmi";
} else {
debug("HDMI present but not probed\n");
}
ret = uclass_find_device_by_name(UCLASS_DISPLAY,
"sunxi_lcd", &lcd);
if (ret)
debug("LCD not present\n");
else if (device_active(lcd))
pipeline = "mixer0-lcd0";
else
debug("LCD present but not probed\n");
if (!pipeline) {
debug("No active display present\n");
return 0;
}
de2_priv = dev_get_uclass_priv(de2);
de2_plat = dev_get_uclass_platdata(de2);
offset = sunxi_simplefb_fdt_match(blob, pipeline);
if (offset < 0) {
eprintf("Cannot setup simplefb: node not found\n");
return 0; /* Keep older kernels working */
}
start = gd->bd->bi_dram[0].start;
size = de2_plat->base - start;
ret = fdt_fixup_memory_banks(blob, &start, &size, 1);
if (ret) {
eprintf("Cannot setup simplefb: Error reserving memory\n");
return ret;
}
ret = fdt_setup_simplefb_node(blob, offset, de2_plat->base,
de2_priv->xsize, de2_priv->ysize,
VNBYTES(de2_priv->bpix) * de2_priv->xsize,
"x8r8g8b8");
if (ret)
eprintf("Cannot setup simplefb: Error setting properties\n");
return ret;
}
#endif /* CONFIG_OF_BOARD_SETUP && CONFIG_VIDEO_DT_SIMPLEFB */
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