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u-boot/drivers/video/broadwell_igd.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

768 lines
18 KiB
C
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// SPDX-License-Identifier: GPL-2.0
/*
* From coreboot src/soc/intel/broadwell/igd.c
*
* Copyright (C) 2016 Google, Inc
*/
#include <common.h>
#include <bios_emul.h>
#include <dm.h>
#include <vbe.h>
#include <video.h>
#include <asm/cpu.h>
#include <asm/intel_regs.h>
#include <asm/io.h>
#include <asm/mtrr.h>
#include <asm/arch/cpu.h>
#include <asm/arch/iomap.h>
#include <asm/arch/pch.h>
#include "i915_reg.h"
struct broadwell_igd_priv {
u8 *regs;
};
struct broadwell_igd_plat {
u32 dp_hotplug[3];
int port_select;
int power_up_delay;
int power_backlight_on_delay;
int power_down_delay;
int power_backlight_off_delay;
int power_cycle_delay;
int cpu_backlight;
int pch_backlight;
int cdclk;
int pre_graphics_delay;
};
#define GT_RETRY 1000
#define GT_CDCLK_337 0
#define GT_CDCLK_450 1
#define GT_CDCLK_540 2
#define GT_CDCLK_675 3
u32 board_map_oprom_vendev(u32 vendev)
{
return SA_IGD_OPROM_VENDEV;
}
static int poll32(u8 *addr, uint mask, uint value)
{
ulong start;
start = get_timer(0);
debug("%s: addr %p = %x\n", __func__, addr, readl(addr));
while ((readl(addr) & mask) != value) {
if (get_timer(start) > GT_RETRY) {
debug("poll32: timeout: %x\n", readl(addr));
return -ETIMEDOUT;
}
}
return 0;
}
static int haswell_early_init(struct udevice *dev)
{
struct broadwell_igd_priv *priv = dev_get_priv(dev);
u8 *regs = priv->regs;
int ret;
/* Enable Force Wake */
writel(0x00000020, regs + 0xa180);
writel(0x00010001, regs + 0xa188);
ret = poll32(regs + 0x130044, 1, 1);
if (ret)
goto err;
/* Enable Counters */
setbits_le32(regs + 0xa248, 0x00000016);
/* GFXPAUSE settings */
writel(0x00070020, regs + 0xa000);
/* ECO Settings */
clrsetbits_le32(regs + 0xa180, ~0xff3fffff, 0x15000000);
/* Enable DOP Clock Gating */
writel(0x000003fd, regs + 0x9424);
/* Enable Unit Level Clock Gating */
writel(0x00000080, regs + 0x9400);
writel(0x40401000, regs + 0x9404);
writel(0x00000000, regs + 0x9408);
writel(0x02000001, regs + 0x940c);
/*
* RC6 Settings
*/
/* Wake Rate Limits */
setbits_le32(regs + 0xa090, 0x00000000);
setbits_le32(regs + 0xa098, 0x03e80000);
setbits_le32(regs + 0xa09c, 0x00280000);
setbits_le32(regs + 0xa0a8, 0x0001e848);
setbits_le32(regs + 0xa0ac, 0x00000019);
/* Render/Video/Blitter Idle Max Count */
writel(0x0000000a, regs + 0x02054);
writel(0x0000000a, regs + 0x12054);
writel(0x0000000a, regs + 0x22054);
writel(0x0000000a, regs + 0x1a054);
/* RC Sleep / RCx Thresholds */
setbits_le32(regs + 0xa0b0, 0x00000000);
setbits_le32(regs + 0xa0b4, 0x000003e8);
setbits_le32(regs + 0xa0b8, 0x0000c350);
/* RP Settings */
setbits_le32(regs + 0xa010, 0x000f4240);
setbits_le32(regs + 0xa014, 0x12060000);
setbits_le32(regs + 0xa02c, 0x0000e808);
setbits_le32(regs + 0xa030, 0x0003bd08);
setbits_le32(regs + 0xa068, 0x000101d0);
setbits_le32(regs + 0xa06c, 0x00055730);
setbits_le32(regs + 0xa070, 0x0000000a);
/* RP Control */
writel(0x00000b92, regs + 0xa024);
/* HW RC6 Control */
writel(0x88040000, regs + 0xa090);
/* Video Frequency Request */
writel(0x08000000, regs + 0xa00c);
/* Set RC6 VIDs */
ret = poll32(regs + 0x138124, (1 << 31), 0);
if (ret)
goto err;
writel(0, regs + 0x138128);
writel(0x80000004, regs + 0x138124);
ret = poll32(regs + 0x138124, (1 << 31), 0);
if (ret)
goto err;
/* Enable PM Interrupts */
writel(0x03000076, regs + 0x4402c);
/* Enable RC6 in idle */
writel(0x00040000, regs + 0xa094);
return 0;
err:
debug("%s: ret=%d\n", __func__, ret);
return ret;
};
static int haswell_late_init(struct udevice *dev)
{
struct broadwell_igd_priv *priv = dev_get_priv(dev);
u8 *regs = priv->regs;
int ret;
/* Lock settings */
setbits_le32(regs + 0x0a248, (1 << 31));
setbits_le32(regs + 0x0a004, (1 << 4));
setbits_le32(regs + 0x0a080, (1 << 2));
setbits_le32(regs + 0x0a180, (1 << 31));
/* Disable Force Wake */
writel(0x00010000, regs + 0xa188);
ret = poll32(regs + 0x130044, 1, 0);
if (ret)
goto err;
writel(0x00000001, regs + 0xa188);
/* Enable power well for DP and Audio */
setbits_le32(regs + 0x45400, (1 << 31));
ret = poll32(regs + 0x45400, 1 << 30, 1 << 30);
if (ret)
goto err;
return 0;
err:
debug("%s: ret=%d\n", __func__, ret);
return ret;
};
static int broadwell_early_init(struct udevice *dev)
{
struct broadwell_igd_priv *priv = dev_get_priv(dev);
u8 *regs = priv->regs;
int ret;
/* Enable Force Wake */
writel(0x00010001, regs + 0xa188);
ret = poll32(regs + 0x130044, 1, 1);
if (ret)
goto err;
/* Enable push bus metric control and shift */
writel(0x00000004, regs + 0xa248);
writel(0x000000ff, regs + 0xa250);
writel(0x00000010, regs + 0xa25c);
/* GFXPAUSE settings (set based on stepping) */
/* ECO Settings */
writel(0x45200000, regs + 0xa180);
/* Enable DOP Clock Gating */
writel(0x000000fd, regs + 0x9424);
/* Enable Unit Level Clock Gating */
writel(0x00000000, regs + 0x9400);
writel(0x40401000, regs + 0x9404);
writel(0x00000000, regs + 0x9408);
writel(0x02000001, regs + 0x940c);
writel(0x0000000a, regs + 0x1a054);
/* Video Frequency Request */
writel(0x08000000, regs + 0xa00c);
writel(0x00000009, regs + 0x138158);
writel(0x0000000d, regs + 0x13815c);
/*
* RC6 Settings
*/
/* Wake Rate Limits */
clrsetbits_le32(regs + 0x0a090, ~0, 0);
setbits_le32(regs + 0x0a098, 0x03e80000);
setbits_le32(regs + 0x0a09c, 0x00280000);
setbits_le32(regs + 0x0a0a8, 0x0001e848);
setbits_le32(regs + 0x0a0ac, 0x00000019);
/* Render/Video/Blitter Idle Max Count */
writel(0x0000000a, regs + 0x02054);
writel(0x0000000a, regs + 0x12054);
writel(0x0000000a, regs + 0x22054);
/* RC Sleep / RCx Thresholds */
setbits_le32(regs + 0x0a0b0, 0x00000000);
setbits_le32(regs + 0x0a0b8, 0x00000271);
/* RP Settings */
setbits_le32(regs + 0x0a010, 0x000f4240);
setbits_le32(regs + 0x0a014, 0x12060000);
setbits_le32(regs + 0x0a02c, 0x0000e808);
setbits_le32(regs + 0x0a030, 0x0003bd08);
setbits_le32(regs + 0x0a068, 0x000101d0);
setbits_le32(regs + 0x0a06c, 0x00055730);
setbits_le32(regs + 0x0a070, 0x0000000a);
setbits_le32(regs + 0x0a168, 0x00000006);
/* RP Control */
writel(0x00000b92, regs + 0xa024);
/* HW RC6 Control */
writel(0x90040000, regs + 0xa090);
/* Set RC6 VIDs */
ret = poll32(regs + 0x138124, (1 << 31), 0);
if (ret)
goto err;
writel(0, regs + 0x138128);
writel(0x80000004, regs + 0x138124);
ret = poll32(regs + 0x138124, (1 << 31), 0);
if (ret)
goto err;
/* Enable PM Interrupts */
writel(0x03000076, regs + 0x4402c);
/* Enable RC6 in idle */
writel(0x00040000, regs + 0xa094);
return 0;
err:
debug("%s: ret=%d\n", __func__, ret);
return ret;
}
static int broadwell_late_init(struct udevice *dev)
{
struct broadwell_igd_priv *priv = dev_get_priv(dev);
u8 *regs = priv->regs;
int ret;
/* Lock settings */
setbits_le32(regs + 0x0a248, 1 << 31);
setbits_le32(regs + 0x0a000, 1 << 18);
setbits_le32(regs + 0x0a180, 1 << 31);
/* Disable Force Wake */
writel(0x00010000, regs + 0xa188);
ret = poll32(regs + 0x130044, 1, 0);
if (ret)
goto err;
/* Enable power well for DP and Audio */
setbits_le32(regs + 0x45400, 1 << 31);
ret = poll32(regs + 0x45400, 1 << 30, 1 << 30);
if (ret)
goto err;
return 0;
err:
debug("%s: ret=%d\n", __func__, ret);
return ret;
};
static unsigned long gtt_read(struct broadwell_igd_priv *priv,
unsigned long reg)
{
return readl(priv->regs + reg);
}
static void gtt_write(struct broadwell_igd_priv *priv, unsigned long reg,
unsigned long data)
{
writel(data, priv->regs + reg);
}
static inline void gtt_clrsetbits(struct broadwell_igd_priv *priv, u32 reg,
u32 bic, u32 or)
{
clrsetbits_le32(priv->regs + reg, bic, or);
}
static int gtt_poll(struct broadwell_igd_priv *priv, u32 reg, u32 mask,
u32 value)
{
unsigned try = GT_RETRY;
u32 data;
while (try--) {
data = gtt_read(priv, reg);
if ((data & mask) == value)
return 0;
udelay(10);
}
debug("GT init timeout\n");
return -ETIMEDOUT;
}
static void igd_setup_panel(struct udevice *dev)
{
struct broadwell_igd_plat *plat = dev_get_platdata(dev);
struct broadwell_igd_priv *priv = dev_get_priv(dev);
u32 reg32;
/* Setup Digital Port Hotplug */
reg32 = (plat->dp_hotplug[0] & 0x7) << 2;
reg32 |= (plat->dp_hotplug[1] & 0x7) << 10;
reg32 |= (plat->dp_hotplug[2] & 0x7) << 18;
gtt_write(priv, PCH_PORT_HOTPLUG, reg32);
/* Setup Panel Power On Delays */
reg32 = (plat->port_select & 0x3) << 30;
reg32 |= (plat->power_up_delay & 0x1fff) << 16;
reg32 |= (plat->power_backlight_on_delay & 0x1fff);
gtt_write(priv, PCH_PP_ON_DELAYS, reg32);
/* Setup Panel Power Off Delays */
reg32 = (plat->power_down_delay & 0x1fff) << 16;
reg32 |= (plat->power_backlight_off_delay & 0x1fff);
gtt_write(priv, PCH_PP_OFF_DELAYS, reg32);
/* Setup Panel Power Cycle Delay */
if (plat->power_cycle_delay) {
reg32 = gtt_read(priv, PCH_PP_DIVISOR);
reg32 &= ~0xff;
reg32 |= plat->power_cycle_delay & 0xff;
gtt_write(priv, PCH_PP_DIVISOR, reg32);
}
/* Enable Backlight if needed */
if (plat->cpu_backlight) {
gtt_write(priv, BLC_PWM_CPU_CTL2, BLC_PWM2_ENABLE);
gtt_write(priv, BLC_PWM_CPU_CTL, plat->cpu_backlight);
}
if (plat->pch_backlight) {
gtt_write(priv, BLC_PWM_PCH_CTL1, BLM_PCH_PWM_ENABLE);
gtt_write(priv, BLC_PWM_PCH_CTL2, plat->pch_backlight);
}
}
static int igd_cdclk_init_haswell(struct udevice *dev)
{
struct broadwell_igd_plat *plat = dev_get_platdata(dev);
struct broadwell_igd_priv *priv = dev_get_priv(dev);
int cdclk = plat->cdclk;
u16 devid;
int gpu_is_ulx = 0;
u32 dpdiv, lpcll;
int ret;
dm_pci_read_config16(dev, PCI_DEVICE_ID, &devid);
/* Check for ULX GT1 or GT2 */
if (devid == 0x0a0e || devid == 0x0a1e)
gpu_is_ulx = 1;
/* 675MHz is not supported on haswell */
if (cdclk == GT_CDCLK_675)
cdclk = GT_CDCLK_337;
/* If CD clock is fixed or ULT then set to 450MHz */
if ((gtt_read(priv, 0x42014) & 0x1000000) || cpu_is_ult())
cdclk = GT_CDCLK_450;
/* 540MHz is not supported on ULX */
if (gpu_is_ulx && cdclk == GT_CDCLK_540)
cdclk = GT_CDCLK_337;
/* 337.5MHz is not supported on non-ULT/ULX */
if (!gpu_is_ulx && !cpu_is_ult() && cdclk == GT_CDCLK_337)
cdclk = GT_CDCLK_450;
/* Set variables based on CD Clock setting */
switch (cdclk) {
case GT_CDCLK_337:
dpdiv = 169;
lpcll = (1 << 26);
break;
case GT_CDCLK_450:
dpdiv = 225;
lpcll = 0;
break;
case GT_CDCLK_540:
dpdiv = 270;
lpcll = (1 << 26);
break;
default:
ret = -EDOM;
goto err;
}
/* Set LPCLL_CTL CD Clock Frequency Select */
gtt_clrsetbits(priv, 0x130040, ~0xf3ffffff, lpcll);
/* ULX: Inform power controller of selected frequency */
if (gpu_is_ulx) {
if (cdclk == GT_CDCLK_450)
gtt_write(priv, 0x138128, 0x00000000); /* 450MHz */
else
gtt_write(priv, 0x138128, 0x00000001); /* 337.5MHz */
gtt_write(priv, 0x13812c, 0x00000000);
gtt_write(priv, 0x138124, 0x80000017);
}
/* Set CPU DP AUX 2X bit clock dividers */
gtt_clrsetbits(priv, 0x64010, ~0xfffff800, dpdiv);
gtt_clrsetbits(priv, 0x64810, ~0xfffff800, dpdiv);
return 0;
err:
debug("%s: ret=%d\n", __func__, ret);
return ret;
}
static int igd_cdclk_init_broadwell(struct udevice *dev)
{
struct broadwell_igd_plat *plat = dev_get_platdata(dev);
struct broadwell_igd_priv *priv = dev_get_priv(dev);
int cdclk = plat->cdclk;
u32 dpdiv, lpcll, pwctl, cdset;
int ret;
/* Inform power controller of upcoming frequency change */
gtt_write(priv, 0x138128, 0);
gtt_write(priv, 0x13812c, 0);
gtt_write(priv, 0x138124, 0x80000018);
/* Poll GT driver mailbox for run/busy clear */
if (gtt_poll(priv, 0x138124, 1 << 31, 0 << 31))
cdclk = GT_CDCLK_450;
if (gtt_read(priv, 0x42014) & 0x1000000) {
/* If CD clock is fixed then set to 450MHz */
cdclk = GT_CDCLK_450;
} else {
/* Program CD clock to highest supported freq */
if (cpu_is_ult())
cdclk = GT_CDCLK_540;
else
cdclk = GT_CDCLK_675;
}
/* CD clock frequency 675MHz not supported on ULT */
if (cpu_is_ult() && cdclk == GT_CDCLK_675)
cdclk = GT_CDCLK_540;
/* Set variables based on CD Clock setting */
switch (cdclk) {
case GT_CDCLK_337:
cdset = 337;
lpcll = (1 << 27);
pwctl = 2;
dpdiv = 169;
break;
case GT_CDCLK_450:
cdset = 449;
lpcll = 0;
pwctl = 0;
dpdiv = 225;
break;
case GT_CDCLK_540:
cdset = 539;
lpcll = (1 << 26);
pwctl = 1;
dpdiv = 270;
break;
case GT_CDCLK_675:
cdset = 674;
lpcll = (1 << 26) | (1 << 27);
pwctl = 3;
dpdiv = 338;
break;
default:
ret = -EDOM;
goto err;
}
debug("%s: frequency = %d\n", __func__, cdclk);
/* Set LPCLL_CTL CD Clock Frequency Select */
gtt_clrsetbits(priv, 0x130040, ~0xf3ffffff, lpcll);
/* Inform power controller of selected frequency */
gtt_write(priv, 0x138128, pwctl);
gtt_write(priv, 0x13812c, 0);
gtt_write(priv, 0x138124, 0x80000017);
/* Program CD Clock Frequency */
gtt_clrsetbits(priv, 0x46200, ~0xfffffc00, cdset);
/* Set CPU DP AUX 2X bit clock dividers */
gtt_clrsetbits(priv, 0x64010, ~0xfffff800, dpdiv);
gtt_clrsetbits(priv, 0x64810, ~0xfffff800, dpdiv);
return 0;
err:
debug("%s: ret=%d\n", __func__, ret);
return ret;
}
u8 systemagent_revision(struct udevice *bus)
{
ulong val;
pci_bus_read_config(bus, PCI_BDF(0, 0, 0), PCI_REVISION_ID, &val,
PCI_SIZE_32);
return val;
}
static int igd_pre_init(struct udevice *dev, bool is_broadwell)
{
struct broadwell_igd_plat *plat = dev_get_platdata(dev);
struct broadwell_igd_priv *priv = dev_get_priv(dev);
u32 rp1_gfx_freq;
int ret;
mdelay(plat->pre_graphics_delay);
/* Early init steps */
if (is_broadwell) {
ret = broadwell_early_init(dev);
if (ret)
goto err;
/* Set GFXPAUSE based on stepping */
if (cpu_get_stepping() <= (CPUID_BROADWELL_E0 & 0xf) &&
systemagent_revision(pci_get_controller(dev)) <= 9) {
gtt_write(priv, 0xa000, 0x300ff);
} else {
gtt_write(priv, 0xa000, 0x30020);
}
} else {
ret = haswell_early_init(dev);
if (ret)
goto err;
}
/* Set RP1 graphics frequency */
rp1_gfx_freq = (readl(MCHBAR_REG(0x5998)) >> 8) & 0xff;
gtt_write(priv, 0xa008, rp1_gfx_freq << 24);
/* Post VBIOS panel setup */
igd_setup_panel(dev);
return 0;
err:
debug("%s: ret=%d\n", __func__, ret);
return ret;
}
static int igd_post_init(struct udevice *dev, bool is_broadwell)
{
int ret;
/* Late init steps */
if (is_broadwell) {
ret = igd_cdclk_init_broadwell(dev);
if (ret)
return ret;
ret = broadwell_late_init(dev);
if (ret)
return ret;
} else {
igd_cdclk_init_haswell(dev);
ret = haswell_late_init(dev);
if (ret)
return ret;
}
return 0;
}
static int broadwell_igd_int15_handler(void)
{
int res = 0;
debug("%s: INT15 function %04x!\n", __func__, M.x86.R_AX);
switch (M.x86.R_AX) {
case 0x5f35:
/*
* Boot Display Device Hook:
* bit 0 = CRT
* bit 1 = TV (eDP)
* bit 2 = EFP
* bit 3 = LFP
* bit 4 = CRT2
* bit 5 = TV2 (eDP)
* bit 6 = EFP2
* bit 7 = LFP2
*/
M.x86.R_AX = 0x005f;
M.x86.R_CX = 0x0000; /* Use video bios default */
res = 1;
break;
default:
debug("Unknown INT15 function %04x!\n", M.x86.R_AX);
break;
}
return res;
}
static int broadwell_igd_probe(struct udevice *dev)
{
struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
struct video_priv *uc_priv = dev_get_uclass_priv(dev);
bool is_broadwell;
int ret;
if (!ll_boot_init()) {
/*
* If we are running from EFI or coreboot, this driver can't
* work.
*/
printf("Not available (previous bootloader prevents it)\n");
return -EPERM;
}
is_broadwell = cpu_get_family_model() == BROADWELL_FAMILY_ULT;
bootstage_start(BOOTSTAGE_ID_ACCUM_LCD, "vesa display");
debug("%s: is_broadwell=%d\n", __func__, is_broadwell);
ret = igd_pre_init(dev, is_broadwell);
if (!ret) {
ret = vbe_setup_video(dev, broadwell_igd_int15_handler);
if (ret)
debug("failed to run video BIOS: %d\n", ret);
}
if (!ret)
ret = igd_post_init(dev, is_broadwell);
bootstage_accum(BOOTSTAGE_ID_ACCUM_LCD);
if (ret)
return ret;
/* Use write-combining for the graphics memory, 256MB */
ret = mtrr_add_request(MTRR_TYPE_WRCOMB, plat->base, 256 << 20);
if (!ret)
ret = mtrr_commit(true);
if (ret && ret != -ENOSYS) {
printf("Failed to add MTRR: Display will be slow (err %d)\n",
ret);
}
debug("fb=%lx, size %x, display size=%d %d %d\n", plat->base,
plat->size, uc_priv->xsize, uc_priv->ysize, uc_priv->bpix);
return 0;
}
static int broadwell_igd_ofdata_to_platdata(struct udevice *dev)
{
struct broadwell_igd_plat *plat = dev_get_platdata(dev);
struct broadwell_igd_priv *priv = dev_get_priv(dev);
int node = dev_of_offset(dev);
const void *blob = gd->fdt_blob;
if (fdtdec_get_int_array(blob, node, "intel,dp-hotplug",
plat->dp_hotplug,
ARRAY_SIZE(plat->dp_hotplug)))
return -EINVAL;
plat->port_select = fdtdec_get_int(blob, node, "intel,port-select", 0);
plat->power_cycle_delay = fdtdec_get_int(blob, node,
"intel,power-cycle-delay", 0);
plat->power_up_delay = fdtdec_get_int(blob, node,
"intel,power-up-delay", 0);
plat->power_down_delay = fdtdec_get_int(blob, node,
"intel,power-down-delay", 0);
plat->power_backlight_on_delay = fdtdec_get_int(blob, node,
"intel,power-backlight-on-delay", 0);
plat->power_backlight_off_delay = fdtdec_get_int(blob, node,
"intel,power-backlight-off-delay", 0);
plat->cpu_backlight = fdtdec_get_int(blob, node,
"intel,cpu-backlight", 0);
plat->pch_backlight = fdtdec_get_int(blob, node,
"intel,pch-backlight", 0);
plat->pre_graphics_delay = fdtdec_get_int(blob, node,
"intel,pre-graphics-delay", 0);
priv->regs = (u8 *)dm_pci_read_bar32(dev, 0);
debug("%s: regs at %p\n", __func__, priv->regs);
debug("dp_hotplug %d %d %d\n", plat->dp_hotplug[0], plat->dp_hotplug[1],
plat->dp_hotplug[2]);
debug("port_select = %d\n", plat->port_select);
debug("power_up_delay = %d\n", plat->power_up_delay);
debug("power_backlight_on_delay = %d\n",
plat->power_backlight_on_delay);
debug("power_down_delay = %d\n", plat->power_down_delay);
debug("power_backlight_off_delay = %d\n",
plat->power_backlight_off_delay);
debug("power_cycle_delay = %d\n", plat->power_cycle_delay);
debug("cpu_backlight = %x\n", plat->cpu_backlight);
debug("pch_backlight = %x\n", plat->pch_backlight);
debug("cdclk = %d\n", plat->cdclk);
debug("pre_graphics_delay = %d\n", plat->pre_graphics_delay);
return 0;
}
static const struct video_ops broadwell_igd_ops = {
};
static const struct udevice_id broadwell_igd_ids[] = {
{ .compatible = "intel,broadwell-igd" },
{ }
};
U_BOOT_DRIVER(broadwell_igd) = {
.name = "broadwell_igd",
.id = UCLASS_VIDEO,
.of_match = broadwell_igd_ids,
.ops = &broadwell_igd_ops,
.ofdata_to_platdata = broadwell_igd_ofdata_to_platdata,
.probe = broadwell_igd_probe,
.priv_auto_alloc_size = sizeof(struct broadwell_igd_priv),
.platdata_auto_alloc_size = sizeof(struct broadwell_igd_plat),
};
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