Re: [PATCH v2 3/7] drm/vc4: Add KMS support for Raspberry Pi.

From: Daniel Vetter
Date: Tue Aug 25 2015 - 04:44:48 EST

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On Tue, Aug 18, 2015 at 02:54:04PM -0700, Eric Anholt wrote:
> This is the start of a full VC4 driver. Right now this just supports
> configuring the display using a pre-existing video mode (because
> changing the pixel clock isn't available yet, and doesn't work when it
> is). However, this is enough for fbcon and bringing up X using
> xf86-video-modesetting.
>
> Signed-off-by: Eric Anholt <eric@xxxxxxxxxx>
> ---
>
> v2: Drop FB_HELPER select thanks to Archit's patches. Do manual init
> ordering instead of using the .load hook. Structure registration
> more like tegra's, but still using the typical "component" code.
> Drop no-op hooks for atomic_begin and mode_fixup() now that
> they're optional. Drop sentinel in Makefile. Fix minor style
> nits I noticed on another reread.

fwiw Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx> since Eric has done
all the changes I requested - simply forgot to add that in my earlier
review.

No full r-b since I don't have a clue about the hw (and didn't take a
close look at the hw touching code hence).

Cheers, Daniel

>
> drivers/gpu/drm/Kconfig | 2 +
> drivers/gpu/drm/Makefile | 1 +
> drivers/gpu/drm/vc4/Kconfig | 13 +
> drivers/gpu/drm/vc4/Makefile | 17 +
> drivers/gpu/drm/vc4/vc4_bo.c | 52 ++++
> drivers/gpu/drm/vc4/vc4_crtc.c | 565 ++++++++++++++++++++++++++++++++++
> drivers/gpu/drm/vc4/vc4_debugfs.c | 38 +++
> drivers/gpu/drm/vc4/vc4_drv.c | 271 ++++++++++++++++
> drivers/gpu/drm/vc4/vc4_drv.h | 120 ++++++++
> drivers/gpu/drm/vc4/vc4_hdmi.c | 633 ++++++++++++++++++++++++++++++++++++++
> drivers/gpu/drm/vc4/vc4_hvs.c | 161 ++++++++++
> drivers/gpu/drm/vc4/vc4_kms.c | 84 +++++
> drivers/gpu/drm/vc4/vc4_plane.c | 320 +++++++++++++++++++
> drivers/gpu/drm/vc4/vc4_regs.h | 562 +++++++++++++++++++++++++++++++++
> 14 files changed, 2839 insertions(+)
> create mode 100644 drivers/gpu/drm/vc4/Kconfig
> create mode 100644 drivers/gpu/drm/vc4/Makefile
> create mode 100644 drivers/gpu/drm/vc4/vc4_bo.c
> create mode 100644 drivers/gpu/drm/vc4/vc4_crtc.c
> create mode 100644 drivers/gpu/drm/vc4/vc4_debugfs.c
> create mode 100644 drivers/gpu/drm/vc4/vc4_drv.c
> create mode 100644 drivers/gpu/drm/vc4/vc4_drv.h
> create mode 100644 drivers/gpu/drm/vc4/vc4_hdmi.c
> create mode 100644 drivers/gpu/drm/vc4/vc4_hvs.c
> create mode 100644 drivers/gpu/drm/vc4/vc4_kms.c
> create mode 100644 drivers/gpu/drm/vc4/vc4_plane.c
> create mode 100644 drivers/gpu/drm/vc4/vc4_regs.h
>
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index 06ae500..19bb0db 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -260,3 +260,5 @@ source "drivers/gpu/drm/sti/Kconfig"
> source "drivers/gpu/drm/amd/amdkfd/Kconfig"
>
> source "drivers/gpu/drm/imx/Kconfig"
> +
> +source "drivers/gpu/drm/vc4/Kconfig"
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index 8858510..283ed8e 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -42,6 +42,7 @@ obj-$(CONFIG_DRM_MGA) += mga/
> obj-$(CONFIG_DRM_I810) += i810/
> obj-$(CONFIG_DRM_I915) += i915/
> obj-$(CONFIG_DRM_MGAG200) += mgag200/
> +obj-$(CONFIG_DRM_VC4) += vc4/
> obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus/
> obj-$(CONFIG_DRM_SIS) += sis/
> obj-$(CONFIG_DRM_SAVAGE)+= savage/
> diff --git a/drivers/gpu/drm/vc4/Kconfig b/drivers/gpu/drm/vc4/Kconfig
> new file mode 100644
> index 0000000..e810ef7
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/Kconfig
> @@ -0,0 +1,13 @@
> +config DRM_VC4
> + tristate "Broadcom VC4 Graphics"
> + depends on ARCH_BCM2835
> + depends on DRM
> + select DRM_KMS_HELPER
> + select DRM_KMS_CMA_HELPER
> + help
> + Choose this option if you have a system that has a Broadcom
> + VC4 GPU, such as the Raspberry Pi or other BCM2708/BCM2835.
> +
> + This driver requires that "avoid_warnings=2" be present in
> + the config.txt for the firmware, to keep it from smashing
> + our display setup.
> diff --git a/drivers/gpu/drm/vc4/Makefile b/drivers/gpu/drm/vc4/Makefile
> new file mode 100644
> index 0000000..32b4f9c
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/Makefile
> @@ -0,0 +1,17 @@
> +ccflags-y := -Iinclude/drm
> +
> +# Please keep these build lists sorted!
> +
> +# core driver code
> +vc4-y := \
> + vc4_bo.o \
> + vc4_crtc.o \
> + vc4_drv.o \
> + vc4_kms.o \
> + vc4_hdmi.o \
> + vc4_hvs.o \
> + vc4_plane.o
> +
> +vc4-$(CONFIG_DEBUG_FS) += vc4_debugfs.o
> +
> +obj-$(CONFIG_DRM_VC4) += vc4.o
> diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c
> new file mode 100644
> index 0000000..ab9f510
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/vc4_bo.c
> @@ -0,0 +1,52 @@
> +/*
> + * Copyright © 2015 Broadcom
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +/* DOC: VC4 GEM BO management support.
> + *
> + * The VC4 GPU architecture (both scanout and rendering) has direct
> + * access to system memory with no MMU in between. To support it, we
> + * use the GEM CMA helper functions to allocate contiguous ranges of
> + * physical memory for our BOs.
> + */
> +
> +#include "vc4_drv.h"
> +
> +struct vc4_bo *vc4_bo_create(struct drm_device *dev, size_t size)
> +{
> + struct drm_gem_cma_object *cma_obj;
> +
> + cma_obj = drm_gem_cma_create(dev, size);
> + if (IS_ERR(cma_obj))
> + return NULL;
> + else
> + return to_vc4_bo(&cma_obj->base);
> +}
> +
> +int vc4_dumb_create(struct drm_file *file_priv,
> + struct drm_device *dev,
> + struct drm_mode_create_dumb *args)
> +{
> + int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
> + struct vc4_bo *bo = NULL;
> + int ret;
> +
> + if (args->pitch < min_pitch)
> + args->pitch = min_pitch;
> +
> + if (args->size < args->pitch * args->height)
> + args->size = args->pitch * args->height;
> +
> + bo = vc4_bo_create(dev, roundup(args->size, PAGE_SIZE));
> + if (!bo)
> + return -ENOMEM;
> +
> + ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle);
> + drm_gem_object_unreference_unlocked(&bo->base.base);
> +
> + return ret;
> +}
> diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
> new file mode 100644
> index 0000000..2c70faf
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/vc4_crtc.c
> @@ -0,0 +1,565 @@
> +/*
> + * Copyright (C) 2015 Broadcom
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +/**
> + * DOC: VC4 CRTC module
> + *
> + * In VC4, the Pixel Valve is what most closely corresponds to the
> + * DRM's concept of a CRTC. The PV generates video timings from the
> + * pixel clock and its configuration.
> + *
> + * However, the DRM CRTC also collects the configuration of all the
> + * DRM planes attached to it. As a result, this file also manages
> + * setup of the VC4 HVS's display elements on the CRTC.
> + */
> +
> +#include "drm_atomic_helper.h"
> +#include "drm_crtc_helper.h"
> +#include "linux/clk.h"
> +#include "linux/component.h"
> +#include "vc4_drv.h"
> +#include "vc4_regs.h"
> +
> +#define CRTC_WRITE(offset, val) writel(val, vc4_crtc->regs + (offset))
> +#define CRTC_READ(offset) readl(vc4_crtc->regs + (offset))
> +
> +#define CRTC_REG(reg) { reg, #reg }
> +static const struct {
> + u32 reg;
> + const char *name;
> +} crtc_regs[] = {
> + CRTC_REG(PV_CONTROL),
> + CRTC_REG(PV_V_CONTROL),
> + CRTC_REG(PV_VSYNCD),
> + CRTC_REG(PV_HORZA),
> + CRTC_REG(PV_HORZB),
> + CRTC_REG(PV_VERTA),
> + CRTC_REG(PV_VERTB),
> + CRTC_REG(PV_VERTA_EVEN),
> + CRTC_REG(PV_VERTB_EVEN),
> + CRTC_REG(PV_INTEN),
> + CRTC_REG(PV_INTSTAT),
> + CRTC_REG(PV_STAT),
> + CRTC_REG(PV_HACT_ACT),
> +};
> +
> +static void vc4_crtc_dump_regs(struct vc4_crtc *vc4_crtc)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(crtc_regs); i++) {
> + DRM_INFO("0x%04x (%s): 0x%08x\n",
> + crtc_regs[i].reg, crtc_regs[i].name,
> + CRTC_READ(crtc_regs[i].reg));
> + }
> +}
> +
> +#ifdef CONFIG_DEBUG_FS
> +int vc4_crtc_debugfs_regs(struct seq_file *m, void *unused)
> +{
> + struct drm_info_node *node = (struct drm_info_node *) m->private;
> + struct drm_device *dev = node->minor->dev;
> + int crtc_index = (uintptr_t)node->info_ent->data;
> + struct drm_crtc *crtc;
> + struct vc4_crtc *vc4_crtc;
> + int i;
> +
> + i = 0;
> + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
> + if (i == crtc_index)
> + break;
> + i++;
> + }
> + if (!crtc)
> + return 0;
> + vc4_crtc = to_vc4_crtc(crtc);
> +
> + for (i = 0; i < ARRAY_SIZE(crtc_regs); i++) {
> + seq_printf(m, "%s (0x%04x): 0x%08x\n",
> + crtc_regs[i].name, crtc_regs[i].reg,
> + CRTC_READ(crtc_regs[i].reg));
> + }
> +
> + return 0;
> +}
> +#endif
> +
> +static void vc4_crtc_destroy(struct drm_crtc *crtc)
> +{
> + drm_crtc_cleanup(crtc);
> +}
> +
> +static u32 vc4_get_fifo_full_level(u32 format)
> +{
> + static const u32 fifo_len_bytes = 64;
> + static const u32 hvs_latency_pix = 6;
> +
> + switch (format) {
> + case PV_CONTROL_FORMAT_DSIV_16:
> + case PV_CONTROL_FORMAT_DSIC_16:
> + return fifo_len_bytes - 2 * hvs_latency_pix;
> + case PV_CONTROL_FORMAT_DSIV_18:
> + return fifo_len_bytes - 14;
> + case PV_CONTROL_FORMAT_24:
> + case PV_CONTROL_FORMAT_DSIV_24:
> + default:
> + return fifo_len_bytes - 3 * hvs_latency_pix;
> + }
> +}
> +
> +static void vc4_crtc_mode_set_nofb(struct drm_crtc *crtc)
> +{
> + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
> + struct drm_crtc_state *state = crtc->state;
> + struct drm_display_mode *mode = &state->adjusted_mode;
> + u32 vactive = (mode->vdisplay >>
> + ((mode->flags & DRM_MODE_FLAG_INTERLACE) ? 1 : 0));
> + u32 format = PV_CONTROL_FORMAT_24;
> + bool debug_dump_regs = false;
> +
> + if (debug_dump_regs) {
> + DRM_INFO("CRTC %d regs before:\n", drm_crtc_index(crtc));
> + vc4_crtc_dump_regs(vc4_crtc);
> + }
> +
> + /* This is where we would set the pixel clock. */
> +
> + /* Reset the PV fifo. */
> + CRTC_WRITE(PV_CONTROL, 0);
> + CRTC_WRITE(PV_CONTROL, PV_CONTROL_FIFO_CLR | PV_CONTROL_EN);
> + CRTC_WRITE(PV_CONTROL, 0);
> +
> + CRTC_WRITE(PV_HORZA,
> + VC4_SET_FIELD(mode->htotal - mode->hsync_end,
> + PV_HORZA_HBP) |
> + VC4_SET_FIELD(mode->hsync_end - mode->hsync_start,
> + PV_HORZA_HSYNC));
> + CRTC_WRITE(PV_HORZB,
> + VC4_SET_FIELD(mode->hsync_start - mode->hdisplay,
> + PV_HORZB_HFP) |
> + VC4_SET_FIELD(mode->hdisplay, PV_HORZB_HACTIVE));
> +
> + CRTC_WRITE(PV_VERTA,
> + VC4_SET_FIELD(mode->vtotal - mode->vsync_end,
> + PV_VERTA_VBP) |
> + VC4_SET_FIELD(mode->vsync_end - mode->vsync_start,
> + PV_VERTA_VSYNC));
> + CRTC_WRITE(PV_VERTB,
> + VC4_SET_FIELD(mode->vsync_start - mode->vdisplay,
> + PV_VERTB_VFP) |
> + VC4_SET_FIELD(vactive, PV_VERTB_VACTIVE));
> + if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
> + /* Write PV_VERTA_EVEN/VERTB_EVEN */
> + }
> +
> + CRTC_WRITE(PV_HACT_ACT, mode->hdisplay);
> +
> + CRTC_WRITE(PV_V_CONTROL,
> + PV_VCONTROL_CONTINUOUS);
> +
> + CRTC_WRITE(PV_CONTROL,
> + VC4_SET_FIELD(format, PV_CONTROL_FORMAT) |
> + VC4_SET_FIELD(vc4_get_fifo_full_level(format),
> + PV_CONTROL_FIFO_LEVEL) |
> + PV_CONTROL_CLR_AT_START |
> + PV_CONTROL_TRIGGER_UNDERFLOW |
> + PV_CONTROL_WAIT_HSTART |
> + VC4_SET_FIELD(PV_CONTROL_CLK_SELECT_DPI_SMI_HDMI,
> + PV_CONTROL_CLK_SELECT) |
> + PV_CONTROL_FIFO_CLR |
> + PV_CONTROL_EN);
> +
> + if (debug_dump_regs) {
> + DRM_INFO("CRTC %d regs after:\n", drm_crtc_index(crtc));
> + vc4_crtc_dump_regs(vc4_crtc);
> + }
> +}
> +
> +static void require_hvs_enabled(struct drm_device *dev)
> +{
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> +
> + WARN_ON_ONCE((HVS_READ(SCALER_DISPCTRL) & SCALER_DISPCTRL_ENABLE) !=
> + SCALER_DISPCTRL_ENABLE);
> +}
> +
> +static void vc4_crtc_disable(struct drm_crtc *crtc)
> +{
> + struct drm_device *dev = crtc->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
> +
> + require_hvs_enabled(dev);
> +
> + CRTC_WRITE(PV_V_CONTROL,
> + CRTC_READ(PV_V_CONTROL) & ~PV_VCONTROL_VIDEN);
> + while (CRTC_READ(PV_V_CONTROL) & PV_VCONTROL_VIDEN)
> + cpu_relax();
> +
> + /* Without a wait here, we end up with a black screen. */
> + msleep(30);
> +
> + if (HVS_READ(SCALER_DISPCTRLX(vc4_crtc->channel)) &
> + SCALER_DISPCTRLX_ENABLE) {
> + HVS_WRITE(SCALER_DISPCTRLX(vc4_crtc->channel),
> + SCALER_DISPCTRLX_RESET);
> +
> + /* While the docs say that reset is self-clearing, it
> + * seems it doesn't actually.
> + */
> + HVS_WRITE(SCALER_DISPCTRLX(vc4_crtc->channel), 0);
> + }
> +
> + /* Once we leave, the scaler should be disabled and its fifo empty. */
> +
> + WARN_ON_ONCE(HVS_READ(SCALER_DISPCTRLX(vc4_crtc->channel)) &
> + SCALER_DISPCTRLX_RESET);
> +
> + WARN_ON_ONCE(VC4_GET_FIELD(HVS_READ(SCALER_DISPSTATX(vc4_crtc->channel)),
> + SCALER_DISPSTATX_MODE) !=
> + SCALER_DISPSTATX_MODE_DISABLED);
> +
> + WARN_ON_ONCE((HVS_READ(SCALER_DISPSTATX(vc4_crtc->channel)) &
> + (SCALER_DISPSTATX_FULL | SCALER_DISPSTATX_EMPTY)) !=
> + SCALER_DISPSTATX_EMPTY);
> +}
> +
> +static void vc4_crtc_enable(struct drm_crtc *crtc)
> +{
> + struct drm_device *dev = crtc->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
> + struct drm_crtc_state *state = crtc->state;
> + struct drm_display_mode *mode = &state->adjusted_mode;
> +
> + require_hvs_enabled(dev);
> +
> + /* Turn on the scaler, which will wait for vstart to start
> + * compositing.
> + */
> + HVS_WRITE(SCALER_DISPCTRLX(vc4_crtc->channel),
> + VC4_SET_FIELD(mode->hdisplay, SCALER_DISPCTRLX_WIDTH) |
> + VC4_SET_FIELD(mode->vdisplay, SCALER_DISPCTRLX_HEIGHT) |
> + SCALER_DISPCTRLX_ENABLE);
> +
> + /* Turn on the pixel valve, which will emit the vstart signal. */
> + CRTC_WRITE(PV_V_CONTROL,
> + CRTC_READ(PV_V_CONTROL) | PV_VCONTROL_VIDEN);
> +}
> +
> +static int vc4_crtc_atomic_check(struct drm_crtc *crtc,
> + struct drm_crtc_state *state)
> +{
> + struct drm_device *dev = crtc->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + struct drm_plane *plane;
> + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
> + u32 dlist_count = 0;
> +
> + drm_atomic_crtc_state_for_each_plane(plane, state) {
> + struct drm_plane_state *plane_state =
> + state->state->plane_states[drm_plane_index(plane)];
> +
> + /* plane might not have changed, in which case take
> + * current state:
> + */
> + if (!plane_state)
> + plane_state = plane->state;
> +
> + dlist_count += vc4_plane_dlist_size(plane_state);
> + }
> +
> + dlist_count++; /* Account for SCALER_CTL0_END. */
> +
> + if (!vc4_crtc->dlist || dlist_count > vc4_crtc->dlist_size) {
> + vc4_crtc->dlist = ((u32 __iomem *)vc4->hvs->dlist +
> + HVS_BOOTLOADER_DLIST_END);
> + vc4_crtc->dlist_size = ((SCALER_DLIST_SIZE >> 2) -
> + HVS_BOOTLOADER_DLIST_END);
> +
> + if (dlist_count > vc4_crtc->dlist_size) {
> + DRM_DEBUG_KMS("dlist too large for CRTC (%d > %d).\n",
> + dlist_count, vc4_crtc->dlist_size);
> + return -EINVAL;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static void vc4_crtc_atomic_flush(struct drm_crtc *crtc,
> + struct drm_crtc_state *old_state)
> +{
> + struct drm_device *dev = crtc->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
> + struct drm_plane *plane;
> + bool debug_dump_regs = false;
> + u32 __iomem *dlist_next = vc4_crtc->dlist;
> +
> + if (debug_dump_regs) {
> + DRM_INFO("CRTC %d HVS before:\n", drm_crtc_index(crtc));
> + vc4_hvs_dump_state(dev);
> + }
> +
> + /* Copy all the active planes' dlist contents to the hardware dlist.
> + *
> + * XXX: If the new display list was large enough that it
> + * overlapped a currently-read display list, we need to do
> + * something like disable scanout before putting in the new
> + * list. For now, we're safe because we only have the two
> + * planes.
> + */
> + drm_atomic_crtc_for_each_plane(plane, crtc) {
> + dlist_next += vc4_plane_write_dlist(plane, dlist_next);
> + }
> +
> + if (dlist_next == vc4_crtc->dlist) {
> + /* If no planes were enabled, use the SCALER_CTL0_END
> + * at the start of the display list memory (in the
> + * bootloader section). We'll rewrite that
> + * SCALER_CTL0_END, just in case, though.
> + */
> + writel(SCALER_CTL0_END, vc4->hvs->dlist);
> + HVS_WRITE(SCALER_DISPLISTX(vc4_crtc->channel), 0);
> + } else {
> + writel(SCALER_CTL0_END, dlist_next);
> + dlist_next++;
> +
> + HVS_WRITE(SCALER_DISPLISTX(vc4_crtc->channel),
> + (u32 *)vc4_crtc->dlist - (u32 *)vc4->hvs->dlist);
> +
> + /* Make the next display list start after ours. */
> + vc4_crtc->dlist_size -= (dlist_next - vc4_crtc->dlist);
> + vc4_crtc->dlist = dlist_next;
> + }
> +
> + if (debug_dump_regs) {
> + DRM_INFO("CRTC %d HVS after:\n", drm_crtc_index(crtc));
> + vc4_hvs_dump_state(dev);
> + }
> +
> + if (crtc->state->event) {
> + unsigned long flags;
> +
> + crtc->state->event->pipe = drm_crtc_index(crtc);
> +
> + WARN_ON(drm_crtc_vblank_get(crtc) != 0);
> +
> + spin_lock_irqsave(&dev->event_lock, flags);
> + vc4_crtc->event = crtc->state->event;
> + spin_unlock_irqrestore(&dev->event_lock, flags);
> + crtc->state->event = NULL;
> + }
> +}
> +
> +int vc4_enable_vblank(struct drm_device *dev, int crtc_id)
> +{
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + struct vc4_crtc *vc4_crtc = vc4->crtc[crtc_id];
> +
> + CRTC_WRITE(PV_INTEN, PV_INT_VFP_START);
> +
> + return 0;
> +}
> +
> +void vc4_disable_vblank(struct drm_device *dev, int crtc_id)
> +{
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + struct vc4_crtc *vc4_crtc = vc4->crtc[crtc_id];
> +
> + CRTC_WRITE(PV_INTEN, 0);
> +}
> +
> +static void vc4_crtc_handle_page_flip(struct vc4_crtc *vc4_crtc)
> +{
> + struct drm_crtc *crtc = &vc4_crtc->base;
> + struct drm_device *dev = crtc->dev;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&dev->event_lock, flags);
> + if (vc4_crtc->event) {
> + drm_crtc_send_vblank_event(crtc, vc4_crtc->event);
> + vc4_crtc->event = NULL;
> + }
> + spin_unlock_irqrestore(&dev->event_lock, flags);
> +}
> +
> +static irqreturn_t vc4_crtc_irq_handler(int irq, void *data)
> +{
> + struct vc4_crtc *vc4_crtc = data;
> + u32 stat = CRTC_READ(PV_INTSTAT);
> + irqreturn_t ret = IRQ_NONE;
> +
> + if (stat & PV_INT_VFP_START) {
> + CRTC_WRITE(PV_INTSTAT, PV_INT_VFP_START);
> + drm_crtc_handle_vblank(&vc4_crtc->base);
> + vc4_crtc_handle_page_flip(vc4_crtc);
> + ret = IRQ_HANDLED;
> + }
> +
> + return ret;
> +}
> +
> +static const struct drm_crtc_funcs vc4_crtc_funcs = {
> + .set_config = drm_atomic_helper_set_config,
> + .destroy = vc4_crtc_destroy,
> + .page_flip = drm_atomic_helper_page_flip,
> + .set_property = NULL,
> + .cursor_set = NULL, /* handled by drm_mode_cursor_universal */
> + .cursor_move = NULL, /* handled by drm_mode_cursor_universal */
> + .reset = drm_atomic_helper_crtc_reset,
> + .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
> + .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
> +};
> +
> +static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = {
> + .mode_set_nofb = vc4_crtc_mode_set_nofb,
> + .disable = vc4_crtc_disable,
> + .enable = vc4_crtc_enable,
> + .atomic_check = vc4_crtc_atomic_check,
> + .atomic_flush = vc4_crtc_atomic_flush,
> +};
> +
> +/* Frees the page flip event when the DRM device is closed with the
> + * event still outstanding.
> + */
> +void vc4_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file)
> +{
> + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
> + struct drm_device *dev = crtc->dev;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&dev->event_lock, flags);
> +
> + if (vc4_crtc->event && vc4_crtc->event->base.file_priv == file) {
> + vc4_crtc->event->base.destroy(&vc4_crtc->event->base);
> + drm_crtc_vblank_put(crtc);
> + vc4_crtc->event = NULL;
> + }
> +
> + spin_unlock_irqrestore(&dev->event_lock, flags);
> +}
> +
> +static int vc4_crtc_bind(struct device *dev, struct device *master, void *data)
> +{
> + struct platform_device *pdev = to_platform_device(dev);
> + struct drm_device *drm = dev_get_drvdata(master);
> + struct vc4_dev *vc4 = to_vc4_dev(drm);
> + struct vc4_crtc *vc4_crtc;
> + struct drm_crtc *crtc;
> + struct drm_plane *primary_plane, *cursor_plane;
> + int ret;
> +
> + /* For now, we create just the primary and the legacy cursor
> + * planes. We should be able to stack more planes on easily,
> + * but to do that we would need to compute the bandwidth
> + * requirement of the plane configuration, and reject ones
> + * that will take too much.
> + */
> + primary_plane = vc4_plane_init(drm, DRM_PLANE_TYPE_PRIMARY);
> + if (!primary_plane) {
> + dev_err(dev, "failed to construct primary plane\n");
> + ret = PTR_ERR(primary_plane);
> + goto fail;
> + }
> +
> + cursor_plane = vc4_plane_init(drm, DRM_PLANE_TYPE_CURSOR);
> + if (!cursor_plane) {
> + dev_err(dev, "failed to construct cursor plane\n");
> + ret = PTR_ERR(cursor_plane);
> + goto fail;
> + }
> +
> + vc4_crtc = devm_kzalloc(dev, sizeof(*vc4_crtc), GFP_KERNEL);
> + if (!vc4_crtc)
> + return -ENOMEM;
> + crtc = &vc4_crtc->base;
> +
> + vc4_crtc->regs = vc4_ioremap_regs(pdev, 0);
> + if (IS_ERR(vc4_crtc->regs))
> + return PTR_ERR(vc4_crtc->regs);
> +
> + drm_crtc_init_with_planes(drm, crtc, primary_plane, cursor_plane,
> + &vc4_crtc_funcs);
> + drm_crtc_helper_add(crtc, &vc4_crtc_helper_funcs);
> + primary_plane->crtc = crtc;
> + cursor_plane->crtc = crtc;
> + vc4->crtc[drm_crtc_index(crtc)] = vc4_crtc;
> +
> + /* Until we have full scanout setup to route things through to
> + * encoders, line things up like the firmware did.
> + */
> + switch (drm_crtc_index(crtc)) {
> + case 0:
> + vc4_crtc->channel = 0;
> + break;
> + case 1:
> + vc4_crtc->channel = 2;
> + break;
> + default:
> + case 2:
> + vc4_crtc->channel = 1;
> + break;
> + }
> +
> + CRTC_WRITE(PV_INTEN, 0);
> + CRTC_WRITE(PV_INTSTAT, PV_INT_VFP_START);
> + ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
> + vc4_crtc_irq_handler, 0, "vc4 crtc", vc4_crtc);
> +
> + platform_set_drvdata(pdev, vc4_crtc);
> +
> + return 0;
> +
> +fail:
> + return ret;
> +}
> +
> +static void vc4_crtc_unbind(struct device *dev, struct device *master,
> + void *data)
> +{
> + struct platform_device *pdev = to_platform_device(dev);
> + struct vc4_crtc *vc4_crtc = dev_get_drvdata(dev);
> +
> + vc4_crtc_destroy(&vc4_crtc->base);
> +
> + CRTC_WRITE(PV_INTEN, 0);
> +
> + platform_set_drvdata(pdev, NULL);
> +}
> +
> +static const struct component_ops vc4_crtc_ops = {
> + .bind = vc4_crtc_bind,
> + .unbind = vc4_crtc_unbind,
> +};
> +
> +static int vc4_crtc_dev_probe(struct platform_device *pdev)
> +{
> + return component_add(&pdev->dev, &vc4_crtc_ops);
> +}
> +
> +static int vc4_crtc_dev_remove(struct platform_device *pdev)
> +{
> + component_del(&pdev->dev, &vc4_crtc_ops);
> + return 0;
> +}
> +
> +static const struct of_device_id vc4_crtc_dt_match[] = {
> + { .compatible = "brcm,vc4-pixelvalve" },
> + {}
> +};
> +
> +struct platform_driver vc4_crtc_driver = {
> + .probe = vc4_crtc_dev_probe,
> + .remove = vc4_crtc_dev_remove,
> + .driver = {
> + .name = "vc4_crtc",
> + .of_match_table = vc4_crtc_dt_match,
> + },
> +};
> diff --git a/drivers/gpu/drm/vc4/vc4_debugfs.c b/drivers/gpu/drm/vc4/vc4_debugfs.c
> new file mode 100644
> index 0000000..c557039
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/vc4_debugfs.c
> @@ -0,0 +1,38 @@
> +/*
> + * Copyright © 2014 Broadcom
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/seq_file.h>
> +#include <linux/circ_buf.h>
> +#include <linux/ctype.h>
> +#include <linux/debugfs.h>
> +#include <drm/drmP.h>
> +
> +#include "vc4_drv.h"
> +#include "vc4_regs.h"
> +
> +static const struct drm_info_list vc4_debugfs_list[] = {
> + {"hdmi_regs", vc4_hdmi_debugfs_regs, 0},
> + {"hvs_regs", vc4_hvs_debugfs_regs, 0},
> + {"crtc0_regs", vc4_crtc_debugfs_regs, 0, (void *)(uintptr_t)0},
> + {"crtc1_regs", vc4_crtc_debugfs_regs, 0, (void *)(uintptr_t)1},
> + {"crtc2_regs", vc4_crtc_debugfs_regs, 0, (void *)(uintptr_t)2},
> +};
> +#define VC4_DEBUGFS_ENTRIES ARRAY_SIZE(vc4_debugfs_list)
> +
> +int
> +vc4_debugfs_init(struct drm_minor *minor)
> +{
> + return drm_debugfs_create_files(vc4_debugfs_list, VC4_DEBUGFS_ENTRIES,
> + minor->debugfs_root, minor);
> +}
> +
> +void
> +vc4_debugfs_cleanup(struct drm_minor *minor)
> +{
> + drm_debugfs_remove_files(vc4_debugfs_list, VC4_DEBUGFS_ENTRIES, minor);
> +}
> diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
> new file mode 100644
> index 0000000..d30aefa
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/vc4_drv.c
> @@ -0,0 +1,271 @@
> +/*
> + * Copyright (C) 2014-2015 Broadcom
> + * Copyright (C) 2013 Red Hat
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/component.h>
> +#include <linux/device.h>
> +#include <linux/io.h>
> +#include <linux/module.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +
> +#include "vc4_drv.h"
> +#include "vc4_regs.h"
> +
> +#define DRIVER_NAME "vc4"
> +#define DRIVER_DESC "Broadcom VC4 graphics"
> +#define DRIVER_DATE "20140616"
> +#define DRIVER_MAJOR 0
> +#define DRIVER_MINOR 0
> +#define DRIVER_PATCHLEVEL 0
> +
> +/* Helper function for mapping the regs on a platform device. */
> +void __iomem *vc4_ioremap_regs(struct platform_device *dev, int index)
> +{
> + struct resource *res;
> + void __iomem *map;
> +
> + res = platform_get_resource(dev, IORESOURCE_MEM, index);
> + map = devm_ioremap_resource(&dev->dev, res);
> + if (IS_ERR(map)) {
> + DRM_ERROR("Failed to map registers: %ld\n", PTR_ERR(map));
> + return map;
> + }
> +
> + return map;
> +}
> +
> +static void vc4_drm_preclose(struct drm_device *dev, struct drm_file *file)
> +{
> + struct drm_crtc *crtc;
> +
> + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
> + vc4_cancel_page_flip(crtc, file);
> +}
> +
> +static const struct file_operations vc4_drm_fops = {
> + .owner = THIS_MODULE,
> + .open = drm_open,
> + .release = drm_release,
> + .unlocked_ioctl = drm_ioctl,
> + .mmap = drm_gem_cma_mmap,
> + .poll = drm_poll,
> + .read = drm_read,
> +#ifdef CONFIG_COMPAT
> + .compat_ioctl = drm_compat_ioctl,
> +#endif
> + .llseek = noop_llseek,
> +};
> +
> +static const struct drm_ioctl_desc vc4_drm_ioctls[] = {
> +};
> +
> +static struct drm_driver vc4_drm_driver = {
> + .driver_features = (DRIVER_MODESET |
> + DRIVER_ATOMIC |
> + DRIVER_GEM |
> + DRIVER_PRIME),
> + .preclose = vc4_drm_preclose,
> +
> + .enable_vblank = vc4_enable_vblank,
> + .disable_vblank = vc4_disable_vblank,
> + .get_vblank_counter = drm_vblank_count,
> +
> +#if defined(CONFIG_DEBUG_FS)
> + .debugfs_init = vc4_debugfs_init,
> + .debugfs_cleanup = vc4_debugfs_cleanup,
> +#endif
> +
> + .gem_free_object = drm_gem_cma_free_object,
> + .gem_vm_ops = &drm_gem_cma_vm_ops,
> +
> + .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> + .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> + .gem_prime_import = drm_gem_prime_import,
> + .gem_prime_export = drm_gem_prime_export,
> + .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
> + .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
> + .gem_prime_vmap = drm_gem_cma_prime_vmap,
> + .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
> + .gem_prime_mmap = drm_gem_cma_prime_mmap,
> +
> + .dumb_create = vc4_dumb_create,
> + .dumb_map_offset = drm_gem_cma_dumb_map_offset,
> + .dumb_destroy = drm_gem_dumb_destroy,
> +
> + .ioctls = vc4_drm_ioctls,
> + .num_ioctls = ARRAY_SIZE(vc4_drm_ioctls),
> + .fops = &vc4_drm_fops,
> +
> + .name = DRIVER_NAME,
> + .desc = DRIVER_DESC,
> + .date = DRIVER_DATE,
> + .major = DRIVER_MAJOR,
> + .minor = DRIVER_MINOR,
> + .patchlevel = DRIVER_PATCHLEVEL,
> +};
> +
> +static int vc4_drm_bind(struct device *dev)
> +{
> + struct platform_device *pdev = to_platform_device(dev);
> + struct drm_device *drm;
> + struct vc4_dev *vc4;
> + int ret = 0;
> +
> + dev->coherent_dma_mask = DMA_BIT_MASK(32);
> +
> + vc4 = devm_kzalloc(dev, sizeof(*vc4), GFP_KERNEL);
> + if (!vc4)
> + return -ENOMEM;
> +
> + drm = drm_dev_alloc(&vc4_drm_driver, dev);
> + if (!drm)
> + return -ENOMEM;
> + platform_set_drvdata(pdev, drm);
> + vc4->dev = drm;
> + drm->dev_private = vc4;
> +
> + drm_dev_set_unique(drm, dev_name(dev));
> +
> + drm_mode_config_init(drm);
> + if (ret)
> + goto unref;
> +
> + ret = component_bind_all(dev, drm);
> + if (ret)
> + goto unref;
> +
> + ret = drm_dev_register(drm, 0);
> + if (ret < 0)
> + goto unbind_all;
> +
> + vc4_kms_load(drm);
> +
> + return 0;
> +unbind_all:
> + component_unbind_all(dev, drm);
> +unref:
> + drm_dev_unref(drm);
> + return ret;
> +
> + return 0;
> +}
> +
> +static void vc4_drm_unbind(struct device *dev)
> +{
> + struct platform_device *pdev = to_platform_device(dev);
> + struct drm_device *drm = platform_get_drvdata(pdev);
> +
> + drm_mode_config_cleanup(drm);
> +
> + drm_put_dev(drm);
> +}
> +
> +static const struct component_master_ops vc4_drm_ops = {
> + .bind = vc4_drm_bind,
> + .unbind = vc4_drm_unbind,
> +};
> +
> +static int compare_of(struct device *dev, void *data)
> +{
> + return dev->of_node == data;
> +}
> +
> +static int add_components(struct device *dev, struct component_match **matchptr,
> + const char *name)
> +{
> + struct device_node *np = dev->of_node;
> + unsigned i;
> +
> + for (i = 0; ; i++) {
> + struct device_node *node;
> +
> + node = of_parse_phandle(np, name, i);
> + if (!node)
> + break;
> +
> + component_match_add(dev, matchptr, compare_of, node);
> + }
> +
> + return 0;
> +}
> +
> +static int vc4_platform_drm_probe(struct platform_device *pdev)
> +{
> + struct component_match *match = NULL;
> + struct device *dev = &pdev->dev;
> +
> + add_components(dev, &match, "crtcs");
> + add_components(dev, &match, "encoders");
> + add_components(dev, &match, "hvss");
> +
> + return component_master_add_with_match(dev, &vc4_drm_ops, match);
> +}
> +
> +static int vc4_platform_drm_remove(struct platform_device *pdev)
> +{
> + component_master_del(&pdev->dev, &vc4_drm_ops);
> +
> + return 0;
> +}
> +
> +static const struct of_device_id vc4_of_match[] = {
> + { .compatible = "brcm,vc4", },
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, vc4_of_match);
> +
> +static struct platform_driver vc4_platform_driver = {
> + .probe = vc4_platform_drm_probe,
> + .remove = vc4_platform_drm_remove,
> + .driver = {
> + .name = "vc4-drm",
> + .owner = THIS_MODULE,
> + .of_match_table = vc4_of_match,
> + },
> +};
> +
> +static struct platform_driver *component_drivers[] = {
> + &vc4_hdmi_driver,
> + &vc4_crtc_driver,
> + &vc4_hvs_driver,
> +};
> +
> +static int __init vc4_drm_register(void)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(component_drivers); i++) {
> + int ret = platform_driver_register(component_drivers[i]);
> + if (ret) {
> + while (--i >= 0)
> + platform_driver_unregister(component_drivers[i]);
> + return ret;
> + }
> + }
> + return platform_driver_register(&vc4_platform_driver);
> +}
> +
> +static void __exit vc4_drm_unregister(void)
> +{
> + int i;
> +
> + for (i = ARRAY_SIZE(component_drivers) - 1; i >= 0; i--)
> + platform_driver_unregister(component_drivers[i]);
> +
> + platform_driver_unregister(&vc4_platform_driver);
> +}
> +
> +module_init(vc4_drm_register);
> +module_exit(vc4_drm_unregister);
> +
> +MODULE_ALIAS("platform:vc4-drm");
> +MODULE_DESCRIPTION("Broadcom VC4 DRM Driver");
> +MODULE_AUTHOR("Eric Anholt <eric@xxxxxxxxxx>");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
> new file mode 100644
> index 0000000..282ce0b
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/vc4_drv.h
> @@ -0,0 +1,120 @@
> +/*
> + * Copyright (C) 2015 Broadcom
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include "drmP.h"
> +#include "drm_gem_cma_helper.h"
> +
> +struct vc4_dev {
> + struct drm_device *dev;
> +
> + struct vc4_hdmi *hdmi;
> + struct vc4_hvs *hvs;
> + struct vc4_crtc *crtc[3];
> +};
> +
> +static inline struct vc4_dev *
> +to_vc4_dev(struct drm_device *dev)
> +{
> + return (struct vc4_dev *)dev->dev_private;
> +}
> +
> +struct vc4_bo {
> + struct drm_gem_cma_object base;
> +};
> +
> +static inline struct vc4_bo *
> +to_vc4_bo(struct drm_gem_object *bo)
> +{
> + return (struct vc4_bo *)bo;
> +}
> +
> +struct vc4_hvs {
> + struct platform_device *pdev;
> + void __iomem *regs;
> + void __iomem *dlist;
> +};
> +
> +struct vc4_crtc {
> + struct drm_crtc base;
> + void __iomem *regs;
> +
> + /* Which HVS channel we're using for our CRTC. */
> + int channel;
> +
> + /* Pointer to the actual hardware display list memory for the
> + * crtc.
> + */
> + u32 __iomem *dlist;
> +
> + u32 dlist_size; /* in dwords */
> +
> + struct drm_pending_vblank_event *event;
> +};
> +
> +static inline struct vc4_crtc *
> +to_vc4_crtc(struct drm_crtc *crtc)
> +{
> + return (struct vc4_crtc *)crtc;
> +}
> +
> +struct vc4_plane {
> + struct drm_plane base;
> +};
> +
> +static inline struct vc4_plane *
> +to_vc4_plane(struct drm_plane *plane)
> +{
> + return (struct vc4_plane *)plane;
> +}
> +
> +#define HVS_READ(offset) readl(vc4->hvs->regs + offset)
> +#define HVS_WRITE(offset, val) writel(val, vc4->hvs->regs + offset)
> +
> +/* vc4_bo.c */
> +void vc4_free_object(struct drm_gem_object *gem_obj);
> +struct vc4_bo *vc4_bo_create(struct drm_device *dev, size_t size);
> +int vc4_dumb_create(struct drm_file *file_priv,
> + struct drm_device *dev,
> + struct drm_mode_create_dumb *args);
> +struct dma_buf *vc4_prime_export(struct drm_device *dev,
> + struct drm_gem_object *obj, int flags);
> +
> +/* vc4_crtc.c */
> +extern struct platform_driver vc4_crtc_driver;
> +int vc4_enable_vblank(struct drm_device *dev, int crtc_id);
> +void vc4_disable_vblank(struct drm_device *dev, int crtc_id);
> +void vc4_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file);
> +int vc4_crtc_debugfs_regs(struct seq_file *m, void *arg);
> +
> +/* vc4_debugfs.c */
> +int vc4_debugfs_init(struct drm_minor *minor);
> +void vc4_debugfs_cleanup(struct drm_minor *minor);
> +
> +/* vc4_drv.c */
> +void __iomem *vc4_ioremap_regs(struct platform_device *dev, int index);
> +
> +/* vc4_hdmi.c */
> +extern struct platform_driver vc4_hdmi_driver;
> +struct drm_encoder *vc4_hdmi_encoder_init(struct drm_device *dev);
> +struct drm_connector *vc4_hdmi_connector_init(struct drm_device *dev,
> + struct drm_encoder *encoder);
> +int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused);
> +
> +/* vc4_hvs.c */
> +extern struct platform_driver vc4_hvs_driver;
> +void vc4_hvs_dump_state(struct drm_device *dev);
> +int vc4_hvs_debugfs_regs(struct seq_file *m, void *unused);
> +
> +/* vc4_kms.c */
> +int vc4_kms_load(struct drm_device *dev);
> +
> +/* vc4_plane.c */
> +struct drm_plane *vc4_plane_init(struct drm_device *dev,
> + enum drm_plane_type type);
> +u32 vc4_plane_write_dlist(struct drm_plane *plane, u32 __iomem *dlist);
> +u32 vc4_plane_dlist_size(struct drm_plane_state *state);
> diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
> new file mode 100644
> index 0000000..cd3301b
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
> @@ -0,0 +1,633 @@
> +/*
> + * Copyright (c) 2014 The Linux Foundation. All rights reserved.
> + * Copyright (C) 2013 Red Hat
> + * Author: Rob Clark <robdclark@xxxxxxxxx>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published by
> + * the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful, but WITHOUT
> + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
> + * more details.
> + *
> + * You should have received a copy of the GNU General Public License along with
> + * this program. If not, see <http://www.gnu.org/licenses/>.
> + */
> +
> +#include "drm_atomic_helper.h"
> +#include "drm_crtc_helper.h"
> +#include "drm_edid.h"
> +#include "linux/clk.h"
> +#include "linux/component.h"
> +#include "linux/of_gpio.h"
> +#include "linux/of_platform.h"
> +#include "vc4_drv.h"
> +#include "vc4_regs.h"
> +
> +/* General HDMI hardware state. */
> +struct vc4_hdmi {
> + struct platform_device *pdev;
> + struct i2c_adapter *ddc;
> + void __iomem *hdmicore_regs;
> + void __iomem *hd_regs;
> + int hpd_gpio;
> +
> + /* Probed video mode at boot time, used to filter display
> + * modes to only allow equivalent ones (since we can't set the
> + * pixel clock yet).
> + */
> + struct drm_display_mode boot_mode;
> +};
> +#define HDMI_READ(offset) readl(vc4->hdmi->hdmicore_regs + offset)
> +#define HDMI_WRITE(offset, val) writel(val, vc4->hdmi->hdmicore_regs + offset)
> +#define HD_READ(offset) readl(vc4->hdmi->hd_regs + offset)
> +#define HD_WRITE(offset, val) writel(val, vc4->hdmi->hd_regs + offset)
> +
> +/* VC4 HDMI encoder KMS struct */
> +struct vc4_hdmi_encoder {
> + struct drm_encoder base;
> + bool hdmi_monitor;
> +};
> +static inline struct vc4_hdmi_encoder *
> +to_vc4_hdmi_encoder(struct drm_encoder *encoder)
> +{
> + return container_of(encoder, struct vc4_hdmi_encoder, base);
> +}
> +
> +/* VC4 HDMI connector KMS struct */
> +struct vc4_hdmi_connector {
> + struct drm_connector base;
> +
> + /* Since the connector is attached to just the one encoder,
> + * this is the reference to it so we can do the best_encoder()
> + * hook.
> + */
> + struct drm_encoder *encoder;
> +};
> +static inline struct vc4_hdmi_connector *
> +to_vc4_hdmi_connector(struct drm_connector *connector)
> +{
> + return container_of(connector, struct vc4_hdmi_connector, base);
> +}
> +
> +#define HDMI_REG(reg) { reg, #reg }
> +static const struct {
> + u32 reg;
> + const char *name;
> +} hdmi_regs[] = {
> + HDMI_REG(VC4_HDMI_CORE_REV),
> + HDMI_REG(VC4_HDMI_SW_RESET_CONTROL),
> + HDMI_REG(VC4_HDMI_HOTPLUG_INT),
> + HDMI_REG(VC4_HDMI_HOTPLUG),
> + HDMI_REG(VC4_HDMI_HORZA),
> + HDMI_REG(VC4_HDMI_HORZB),
> + HDMI_REG(VC4_HDMI_FIFO_CTL),
> + HDMI_REG(VC4_HDMI_SCHEDULER_CONTROL),
> + HDMI_REG(VC4_HDMI_VERTA0),
> + HDMI_REG(VC4_HDMI_VERTA1),
> + HDMI_REG(VC4_HDMI_VERTB0),
> + HDMI_REG(VC4_HDMI_VERTB1),
> + HDMI_REG(VC4_HDMI_TX_PHY_RESET_CTL),
> +};
> +static const struct {
> + u32 reg;
> + const char *name;
> +} hd_regs[] = {
> + HDMI_REG(VC4_HD_M_CTL),
> + HDMI_REG(VC4_HD_MAI_CTL),
> + HDMI_REG(VC4_HD_VID_CTL),
> + HDMI_REG(VC4_HD_CSC_CTL),
> + HDMI_REG(VC4_HD_FRAME_COUNT),
> +};
> +
> +#ifdef CONFIG_DEBUG_FS
> +int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused)
> +{
> + struct drm_info_node *node = (struct drm_info_node *) m->private;
> + struct drm_device *dev = node->minor->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(hdmi_regs); i++) {
> + seq_printf(m, "%s (0x%04x): 0x%08x\n",
> + hdmi_regs[i].name, hdmi_regs[i].reg,
> + HDMI_READ(hdmi_regs[i].reg));
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(hd_regs); i++) {
> + seq_printf(m, "%s (0x%04x): 0x%08x\n",
> + hd_regs[i].name, hd_regs[i].reg,
> + HD_READ(hd_regs[i].reg));
> + }
> +
> + return 0;
> +}
> +#endif /* CONFIG_DEBUG_FS */
> +
> +static void vc4_hdmi_dump_regs(struct drm_device *dev)
> +{
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(hdmi_regs); i++) {
> + DRM_INFO("0x%04x (%s): 0x%08x\n",
> + hdmi_regs[i].reg, hdmi_regs[i].name,
> + HDMI_READ(hdmi_regs[i].reg));
> + }
> + for (i = 0; i < ARRAY_SIZE(hd_regs); i++) {
> + DRM_INFO("0x%04x (%s): 0x%08x\n",
> + hd_regs[i].reg, hd_regs[i].name,
> + HD_READ(hd_regs[i].reg));
> + }
> +}
> +
> +static enum drm_connector_status
> +vc4_hdmi_connector_detect(struct drm_connector *connector, bool force)
> +{
> + struct drm_device *dev = connector->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> +
> + if (vc4->hdmi->hpd_gpio) {
> + if (gpio_get_value(vc4->hdmi->hpd_gpio))
> + return connector_status_connected;
> + else
> + return connector_status_disconnected;
> + }
> +
> + if (HDMI_READ(VC4_HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED)
> + return connector_status_connected;
> + else
> + return connector_status_disconnected;
> +}
> +
> +static void vc4_hdmi_connector_destroy(struct drm_connector *connector)
> +{
> + drm_connector_unregister(connector);
> + drm_connector_cleanup(connector);
> +}
> +
> +static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
> +{
> + struct vc4_hdmi_connector *vc4_connector =
> + to_vc4_hdmi_connector(connector);
> + struct drm_encoder *encoder = vc4_connector->encoder;
> + struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
> + struct drm_device *dev = connector->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + int ret = 0;
> + struct edid *edid;
> +
> + edid = drm_get_edid(connector, vc4->hdmi->ddc);
> + if (!edid)
> + return -ENODEV;
> +
> + vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid);
> + drm_mode_connector_update_edid_property(connector, edid);
> + ret = drm_add_edid_modes(connector, edid);
> +
> + return ret;
> +}
> +
> +/* Since we can't set the pixel clock yet, filter out all the EDID
> + * modes that don't match what was set up by the firmware.
> + */
> +int vc4_hdmi_mode_valid(struct drm_connector *connector,
> + struct drm_display_mode *mode)
> +{
> + struct drm_device *dev = connector->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + struct drm_display_mode *boot_mode = &vc4->hdmi->boot_mode;
> +
> + if (mode->hdisplay != boot_mode->hdisplay ||
> + mode->hsync_start != boot_mode->hsync_start ||
> + mode->hsync_end != boot_mode->hsync_end ||
> + mode->htotal != boot_mode->htotal) {
> + return MODE_ERROR;
> + }
> +
> + return MODE_OK;
> +}
> +
> +static struct drm_encoder *
> +vc4_hdmi_connector_best_encoder(struct drm_connector *connector)
> +{
> + struct vc4_hdmi_connector *hdmi_connector =
> + to_vc4_hdmi_connector(connector);
> + return hdmi_connector->encoder;
> +}
> +
> +static const struct drm_connector_funcs vc4_hdmi_connector_funcs = {
> + .dpms = drm_atomic_helper_connector_dpms,
> + .detect = vc4_hdmi_connector_detect,
> + .fill_modes = drm_helper_probe_single_connector_modes,
> + .destroy = vc4_hdmi_connector_destroy,
> + .reset = drm_atomic_helper_connector_reset,
> + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> +};
> +
> +static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs = {
> + .get_modes = vc4_hdmi_connector_get_modes,
> + .mode_valid = vc4_hdmi_mode_valid,
> + .best_encoder = vc4_hdmi_connector_best_encoder,
> +};
> +
> +struct drm_connector *vc4_hdmi_connector_init(struct drm_device *dev,
> + struct drm_encoder *encoder)
> +{
> + struct drm_connector *connector = NULL;
> + struct vc4_hdmi_connector *hdmi_connector;
> + int ret = 0;
> +
> + hdmi_connector = devm_kzalloc(dev->dev, sizeof(*hdmi_connector),
> + GFP_KERNEL);
> + if (!hdmi_connector) {
> + ret = -ENOMEM;
> + goto fail;
> + }
> + connector = &hdmi_connector->base;
> +
> + hdmi_connector->encoder = encoder;
> +
> + drm_connector_init(dev, connector, &vc4_hdmi_connector_funcs,
> + DRM_MODE_CONNECTOR_HDMIA);
> + drm_connector_helper_add(connector, &vc4_hdmi_connector_helper_funcs);
> +
> + connector->polled = (DRM_CONNECTOR_POLL_CONNECT |
> + DRM_CONNECTOR_POLL_DISCONNECT);
> +
> + connector->interlace_allowed = 0;
> + connector->doublescan_allowed = 0;
> +
> + drm_connector_register(connector);
> +
> + drm_mode_connector_attach_encoder(connector, encoder);
> +
> + return connector;
> +
> + fail:
> + if (connector)
> + vc4_hdmi_connector_destroy(connector);
> +
> + return ERR_PTR(ret);
> +}
> +
> +static void vc4_encoder_destroy(struct drm_encoder *encoder)
> +{
> + drm_encoder_cleanup(encoder);
> +}
> +
> +static const struct drm_encoder_funcs vc4_hdmi_encoder_funcs = {
> + .destroy = vc4_encoder_destroy,
> +};
> +
> +static void vc4_hdmi_encoder_mode_set(struct drm_encoder *encoder,
> + struct drm_display_mode *unadjusted_mode,
> + struct drm_display_mode *mode)
> +{
> + struct drm_device *dev = encoder->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + bool debug_dump_regs = false;
> + bool hsync_pos = !(mode->flags & DRM_MODE_FLAG_NHSYNC);
> + bool vsync_pos = !(mode->flags & DRM_MODE_FLAG_NVSYNC);
> + u32 vactive = (mode->vdisplay >>
> + ((mode->flags & DRM_MODE_FLAG_INTERLACE) ? 1 : 0));
> + u32 verta = (VC4_SET_FIELD(mode->vsync_end - mode->vsync_start,
> + VC4_HDMI_VERTA_VSP) |
> + VC4_SET_FIELD(mode->vsync_start - mode->vdisplay,
> + VC4_HDMI_VERTA_VFP) |
> + VC4_SET_FIELD(vactive, VC4_HDMI_VERTA_VAL));
> + u32 vertb = (VC4_SET_FIELD(0, VC4_HDMI_VERTB_VSPO) |
> + VC4_SET_FIELD(mode->vtotal - mode->vsync_end,
> + VC4_HDMI_VERTB_VBP));
> +
> + if (debug_dump_regs) {
> + DRM_INFO("HDMI regs before:\n");
> + vc4_hdmi_dump_regs(dev);
> + }
> +
> + HD_WRITE(VC4_HD_VID_CTL, 0);
> +
> + /* XXX: This is where we would set the HDMI state machine
> + * clock, if we had an interface for it.
> + */
> +
> + HDMI_WRITE(VC4_HDMI_SCHEDULER_CONTROL,
> + HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) |
> + VC4_HDMI_SCHEDULER_CONTROL_MANUAL_FORMAT |
> + VC4_HDMI_SCHEDULER_CONTROL_IGNORE_VSYNC_PREDICTS);
> +
> + HDMI_WRITE(VC4_HDMI_HORZA,
> + (vsync_pos ? VC4_HDMI_HORZA_VPOS : 0) |
> + (hsync_pos ? VC4_HDMI_HORZA_HPOS : 0) |
> + VC4_SET_FIELD(mode->hdisplay, VC4_HDMI_HORZA_HAP));
> +
> + HDMI_WRITE(VC4_HDMI_HORZB,
> + VC4_SET_FIELD(mode->htotal - mode->hsync_end,
> + VC4_HDMI_HORZB_HBP) |
> + VC4_SET_FIELD(mode->hsync_end - mode->hsync_start,
> + VC4_HDMI_HORZB_HSP) |
> + VC4_SET_FIELD(mode->hsync_start - mode->hdisplay,
> + VC4_HDMI_HORZB_HFP));
> +
> + HDMI_WRITE(VC4_HDMI_VERTA0, verta);
> + HDMI_WRITE(VC4_HDMI_VERTA1, verta);
> +
> + HDMI_WRITE(VC4_HDMI_VERTB0, vertb);
> + HDMI_WRITE(VC4_HDMI_VERTB1, vertb);
> +
> + HD_WRITE(VC4_HD_VID_CTL,
> + (vsync_pos ? 0 : VC4_HD_VID_CTL_VSYNC_LOW) |
> + (hsync_pos ? 0 : VC4_HD_VID_CTL_HSYNC_LOW));
> +
> + /* The RGB order applies even when CSC is disabled. */
> + HD_WRITE(VC4_HD_CSC_CTL, VC4_SET_FIELD(VC4_HD_CSC_CTL_ORDER_BGR,
> + VC4_HD_CSC_CTL_ORDER));
> +
> + HDMI_WRITE(VC4_HDMI_FIFO_CTL, VC4_HDMI_FIFO_CTL_MASTER_SLAVE_N);
> +
> + if (debug_dump_regs) {
> + DRM_INFO("HDMI regs after:\n");
> + vc4_hdmi_dump_regs(dev);
> + }
> +}
> +
> +static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder)
> +{
> + struct drm_device *dev = encoder->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> +
> + HDMI_WRITE(VC4_HDMI_TX_PHY_RESET_CTL, 0xf << 16);
> + HD_WRITE(VC4_HD_VID_CTL,
> + HD_READ(VC4_HD_VID_CTL) & ~VC4_HD_VID_CTL_ENABLE);
> +}
> +
> +static void vc4_hdmi_encoder_enable(struct drm_encoder *encoder)
> +{
> + struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
> + struct drm_device *dev = encoder->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> +
> + HDMI_WRITE(VC4_HDMI_TX_PHY_RESET_CTL, 0);
> +
> + HD_WRITE(VC4_HD_VID_CTL,
> + HD_READ(VC4_HD_VID_CTL) |
> + VC4_HD_VID_CTL_ENABLE |
> + VC4_HD_VID_CTL_UNDERFLOW_ENABLE |
> + VC4_HD_VID_CTL_FRAME_COUNTER_RESET);
> +
> + if (vc4_encoder->hdmi_monitor) {
> + HDMI_WRITE(VC4_HDMI_SCHEDULER_CONTROL,
> + HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) |
> + VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI);
> +
> + while (!(HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) &
> + VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE)) {
> + cpu_relax();
> + }
> + } else {
> + HDMI_WRITE(VC4_HDMI_RAM_PACKET_CONFIG,
> + HDMI_READ(VC4_HDMI_RAM_PACKET_CONFIG) &
> + ~(VC4_HDMI_RAM_PACKET_ENABLE));
> + HDMI_WRITE(VC4_HDMI_SCHEDULER_CONTROL,
> + HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) &
> + ~VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI);
> +
> + while (HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) &
> + VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE) {
> + cpu_relax();
> + }
> + }
> +
> + if (vc4_encoder->hdmi_monitor) {
> + u32 drift;
> +
> + WARN_ON(!(HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) &
> + VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE));
> + HDMI_WRITE(VC4_HDMI_SCHEDULER_CONTROL,
> + HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) |
> + VC4_HDMI_SCHEDULER_CONTROL_VERT_ALWAYS_KEEPOUT);
> +
> + /* XXX: Set HDMI_RAM_PACKET_CONFIG (1 << 16) and set
> + * up the infoframe.
> + */
> +
> + drift = HDMI_READ(VC4_HDMI_FIFO_CTL);
> + drift &= VC4_HDMI_FIFO_VALID_WRITE_MASK;
> +
> + HDMI_WRITE(VC4_HDMI_FIFO_CTL,
> + drift & ~VC4_HDMI_FIFO_CTL_RECENTER);
> + HDMI_WRITE(VC4_HDMI_FIFO_CTL,
> + drift | VC4_HDMI_FIFO_CTL_RECENTER);
> + udelay(1000);
> + HDMI_WRITE(VC4_HDMI_FIFO_CTL,
> + drift & ~VC4_HDMI_FIFO_CTL_RECENTER);
> + HDMI_WRITE(VC4_HDMI_FIFO_CTL,
> + drift | VC4_HDMI_FIFO_CTL_RECENTER);
> +
> + while ((HDMI_READ(VC4_HDMI_FIFO_CTL) &
> + VC4_HDMI_FIFO_CTL_RECENTER_DONE) == 0) {
> + cpu_relax();
> + }
> + }
> +}
> +
> +static const struct drm_encoder_helper_funcs vc4_hdmi_encoder_helper_funcs = {
> + .mode_set = vc4_hdmi_encoder_mode_set,
> + .disable = vc4_hdmi_encoder_disable,
> + .enable = vc4_hdmi_encoder_enable,
> +};
> +
> +static struct drm_crtc *
> +vc4_get_crtc_node(struct platform_device *pdev)
> +{
> + struct device_node *crtc_node;
> + struct platform_device *crtc_pdev;
> +
> + crtc_node = of_parse_phandle(pdev->dev.of_node, "crtc", 0);
> + if (!crtc_node) {
> + DRM_ERROR("No CRTC for hdmi in DT\n");
> + return ERR_PTR(-EINVAL);
> + }
> +
> + crtc_pdev = of_find_device_by_node(crtc_node);
> + if (!crtc_pdev) {
> + DRM_ERROR("No CRTC device attached to OF node\n");
> + return ERR_PTR(-EINVAL);
> + }
> +
> + return platform_get_drvdata(crtc_pdev);
> +}
> +
> +struct drm_encoder *vc4_hdmi_encoder_init(struct drm_device *dev)
> +{
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + struct drm_encoder *encoder = NULL;
> + struct vc4_hdmi_encoder *vc4_hdmi_encoder;
> + struct drm_crtc *crtc;
> + int ret;
> +
> + vc4_hdmi_encoder = devm_kzalloc(dev->dev, sizeof(*vc4_hdmi_encoder),
> + GFP_KERNEL);
> + if (!vc4_hdmi_encoder) {
> + ret = -ENOMEM;
> + goto fail;
> + }
> + encoder = &vc4_hdmi_encoder->base;
> +
> + crtc = vc4_get_crtc_node(vc4->hdmi->pdev);
> + if (IS_ERR(crtc)) {
> + ret = PTR_ERR(crtc);
> + goto fail;
> + }
> +
> + drm_encoder_init(dev, encoder, &vc4_hdmi_encoder_funcs,
> + DRM_MODE_ENCODER_TMDS);
> + drm_encoder_helper_add(encoder, &vc4_hdmi_encoder_helper_funcs);
> +
> + encoder->possible_crtcs = drm_crtc_mask(crtc);
> +
> + return encoder;
> +
> +fail:
> + if (encoder)
> + vc4_encoder_destroy(encoder);
> +
> + return ERR_PTR(ret);
> +}
> +
> +/* Reads out the current HDMI mode progreamming at driver load time.
> + *
> + * This is currently used for later filtering out of the DDC-probed
> + * video modes, since we can't actually change modes due to not having
> + * control of the necessary clocks. Later on, we may end up reusing
> + * this for skipping modesets at boot time.
> + */
> +static void
> +vc4_hdmi_get_boot_display_mode(struct vc4_dev *vc4)
> +{
> + struct drm_display_mode *mode = &vc4->hdmi->boot_mode;
> + u32 horza = HDMI_READ(VC4_HDMI_HORZA);
> + u32 horzb = HDMI_READ(VC4_HDMI_HORZB);
> + u32 verta = HDMI_READ(VC4_HDMI_VERTA0);
> + u32 vertb = HDMI_READ(VC4_HDMI_VERTB0);
> +
> + memset(mode, 0, sizeof(*mode));
> +
> + if (!(horza & VC4_HDMI_HORZA_VPOS))
> + mode->flags |= DRM_MODE_FLAG_NVSYNC;
> + if (!(horza & VC4_HDMI_HORZA_HPOS))
> + mode->flags |= DRM_MODE_FLAG_NHSYNC;
> + mode->hdisplay = VC4_GET_FIELD(horza, VC4_HDMI_HORZA_HAP);
> + mode->hsync_start = (mode->hdisplay +
> + VC4_GET_FIELD(horzb, VC4_HDMI_HORZB_HFP));
> + mode->hsync_end = (mode->hsync_start +
> + VC4_GET_FIELD(horzb, VC4_HDMI_HORZB_HSP));
> + mode->htotal = (mode->hsync_end +
> + VC4_GET_FIELD(horzb, VC4_HDMI_HORZB_HBP));
> +
> + mode->vdisplay = VC4_GET_FIELD(verta, VC4_HDMI_VERTA_VAL);
> + mode->vsync_start = (mode->vdisplay +
> + VC4_GET_FIELD(verta, VC4_HDMI_VERTA_VFP));
> + mode->vsync_end = (mode->vsync_start +
> + VC4_GET_FIELD(verta, VC4_HDMI_VERTA_VSP));
> + mode->vtotal = (mode->vsync_end +
> + VC4_GET_FIELD(vertb, VC4_HDMI_VERTB_VBP));
> +}
> +
> +static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
> +{
> + struct platform_device *pdev = to_platform_device(dev);
> + struct drm_device *drm = dev_get_drvdata(master);
> + struct vc4_dev *vc4 = drm->dev_private;
> + struct vc4_hdmi *hdmi;
> + struct device_node *ddc_node;
> + u32 value;
> +
> + hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
> + if (!hdmi)
> + return -ENOMEM;
> +
> + hdmi->pdev = pdev;
> + hdmi->hdmicore_regs = vc4_ioremap_regs(pdev, 0);
> + if (IS_ERR(hdmi->hdmicore_regs))
> + return PTR_ERR(hdmi->hdmicore_regs);
> +
> + hdmi->hd_regs = vc4_ioremap_regs(pdev, 1);
> + if (IS_ERR(hdmi->hd_regs))
> + return PTR_ERR(hdmi->hd_regs);
> +
> + /* DDC i2c driver */
> + ddc_node = of_parse_phandle(dev->of_node, "ddc", 0);
> + if (!ddc_node) {
> + DRM_ERROR("Failed to find ddc node in device tree\n");
> + return -ENODEV;
> + }
> +
> + hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node);
> + if (!hdmi->ddc) {
> + DRM_ERROR("Failed to get ddc i2c adapter by node\n");
> + return -EPROBE_DEFER;
> + }
> +
> + /* Only use the GPIO HPD pin if present in the DT, otherwise
> + * we'll use the HDMI core's register.
> + */
> + if (of_find_property(dev->of_node, "hpd-gpio", &value)) {
> + hdmi->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpio", 0);
> + if (hdmi->hpd_gpio < 0)
> + return hdmi->hpd_gpio;
> + }
> +
> + vc4->hdmi = hdmi;
> +
> + /* HDMI core must be enabled. */
> + WARN_ON_ONCE((HD_READ(VC4_HD_M_CTL) & VC4_HD_M_ENABLE) == 0);
> +
> + vc4_hdmi_get_boot_display_mode(vc4);
> +
> + return 0;
> +}
> +
> +static void vc4_hdmi_unbind(struct device *dev, struct device *master,
> + void *data)
> +{
> + struct drm_device *drm = dev_get_drvdata(master);
> + struct vc4_dev *vc4 = drm->dev_private;
> +
> + put_device(&vc4->hdmi->ddc->dev);
> +
> + vc4->hdmi = NULL;
> +}
> +
> +static const struct component_ops vc4_hdmi_ops = {
> + .bind = vc4_hdmi_bind,
> + .unbind = vc4_hdmi_unbind,
> +};
> +
> +static int vc4_hdmi_dev_probe(struct platform_device *pdev)
> +{
> + return component_add(&pdev->dev, &vc4_hdmi_ops);
> +}
> +
> +static int vc4_hdmi_dev_remove(struct platform_device *pdev)
> +{
> + component_del(&pdev->dev, &vc4_hdmi_ops);
> + return 0;
> +}
> +
> +static const struct of_device_id vc4_hdmi_dt_match[] = {
> + { .compatible = "brcm,vc4-hdmi" },
> + {}
> +};
> +
> +struct platform_driver vc4_hdmi_driver = {
> + .probe = vc4_hdmi_dev_probe,
> + .remove = vc4_hdmi_dev_remove,
> + .driver = {
> + .name = "vc4_hdmi",
> + .of_match_table = vc4_hdmi_dt_match,
> + },
> +};
> diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c
> new file mode 100644
> index 0000000..34906fd
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/vc4_hvs.c
> @@ -0,0 +1,161 @@
> +/*
> + * Copyright (C) 2015 Broadcom
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +/**
> + * DOC: VC4 HVS module.
> + *
> + * The HVS is the piece of hardware that does translation, scaling,
> + * colorspace conversion, and compositing of pixels stored in
> + * framebuffers into a FIFO of pixels going out to the Pixel Valve
> + * (CRTC).
> + *
> + * There is a single global HVS, with multiple output FIFOs that can
> + * be consumed by the PVs. This file just manages the resources for
> + * the HVS, while the vc4_crtc.c code actually drives HVS setup for
> + * each CRTC.
> + */
> +
> +#include "linux/component.h"
> +#include "vc4_drv.h"
> +#include "vc4_regs.h"
> +
> +#define HVS_REG(reg) { reg, #reg }
> +static const struct {
> + u32 reg;
> + const char *name;
> +} hvs_regs[] = {
> + HVS_REG(SCALER_DISPCTRL),
> + HVS_REG(SCALER_DISPSTAT),
> + HVS_REG(SCALER_DISPID),
> + HVS_REG(SCALER_DISPECTRL),
> + HVS_REG(SCALER_DISPPROF),
> + HVS_REG(SCALER_DISPDITHER),
> + HVS_REG(SCALER_DISPEOLN),
> + HVS_REG(SCALER_DISPLIST0),
> + HVS_REG(SCALER_DISPLIST1),
> + HVS_REG(SCALER_DISPLIST2),
> + HVS_REG(SCALER_DISPLSTAT),
> + HVS_REG(SCALER_DISPLACT0),
> + HVS_REG(SCALER_DISPLACT1),
> + HVS_REG(SCALER_DISPLACT2),
> + HVS_REG(SCALER_DISPCTRL0),
> + HVS_REG(SCALER_DISPBKGND0),
> + HVS_REG(SCALER_DISPSTAT0),
> + HVS_REG(SCALER_DISPBASE0),
> + HVS_REG(SCALER_DISPCTRL1),
> + HVS_REG(SCALER_DISPBKGND1),
> + HVS_REG(SCALER_DISPSTAT1),
> + HVS_REG(SCALER_DISPBASE1),
> + HVS_REG(SCALER_DISPCTRL2),
> + HVS_REG(SCALER_DISPBKGND2),
> + HVS_REG(SCALER_DISPSTAT2),
> + HVS_REG(SCALER_DISPBASE2),
> + HVS_REG(SCALER_DISPALPHA2),
> +};
> +
> +void vc4_hvs_dump_state(struct drm_device *dev)
> +{
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(hvs_regs); i++) {
> + DRM_INFO("0x%04x (%s): 0x%08x\n",
> + hvs_regs[i].reg, hvs_regs[i].name,
> + HVS_READ(hvs_regs[i].reg));
> + }
> +
> + DRM_INFO("HVS ctx:\n");
> + for (i = 0; i < 64; i += 4) {
> + DRM_INFO("0x%08x (%s): 0x%08x 0x%08x 0x%08x 0x%08x\n",
> + i * 4, i < HVS_BOOTLOADER_DLIST_END ? "B" : "D",
> + ((uint32_t *)vc4->hvs->dlist)[i + 0],
> + ((uint32_t *)vc4->hvs->dlist)[i + 1],
> + ((uint32_t *)vc4->hvs->dlist)[i + 2],
> + ((uint32_t *)vc4->hvs->dlist)[i + 3]);
> + }
> +}
> +
> +#ifdef CONFIG_DEBUG_FS
> +int vc4_hvs_debugfs_regs(struct seq_file *m, void *unused)
> +{
> + struct drm_info_node *node = (struct drm_info_node *) m->private;
> + struct drm_device *dev = node->minor->dev;
> + struct vc4_dev *vc4 = to_vc4_dev(dev);
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(hvs_regs); i++) {
> + seq_printf(m, "%s (0x%04x): 0x%08x\n",
> + hvs_regs[i].name, hvs_regs[i].reg,
> + HVS_READ(hvs_regs[i].reg));
> + }
> +
> + return 0;
> +}
> +#endif
> +
> +static int vc4_hvs_bind(struct device *dev, struct device *master, void *data)
> +{
> + struct platform_device *pdev = to_platform_device(dev);
> + struct drm_device *drm = dev_get_drvdata(master);
> + struct vc4_dev *vc4 = drm->dev_private;
> + struct vc4_hvs *hvs = NULL;
> +
> + hvs = devm_kzalloc(&pdev->dev, sizeof(*hvs), GFP_KERNEL);
> + if (!hvs)
> + return -ENOMEM;
> +
> + hvs->pdev = pdev;
> +
> + hvs->regs = vc4_ioremap_regs(pdev, 0);
> + if (IS_ERR(hvs->regs))
> + return PTR_ERR(hvs->regs);
> +
> + hvs->dlist = hvs->regs + SCALER_DLIST_START;
> +
> + vc4->hvs = hvs;
> + return 0;
> +}
> +
> +static void vc4_hvs_unbind(struct device *dev, struct device *master,
> + void *data)
> +{
> + struct drm_device *drm = dev_get_drvdata(master);
> + struct vc4_dev *vc4 = drm->dev_private;
> +
> + vc4->hvs = NULL;
> +}
> +
> +static const struct component_ops vc4_hvs_ops = {
> + .bind = vc4_hvs_bind,
> + .unbind = vc4_hvs_unbind,
> +};
> +
> +static int vc4_hvs_dev_probe(struct platform_device *pdev)
> +{
> + return component_add(&pdev->dev, &vc4_hvs_ops);
> +}
> +
> +static int vc4_hvs_dev_remove(struct platform_device *pdev)
> +{
> + component_del(&pdev->dev, &vc4_hvs_ops);
> + return 0;
> +}
> +
> +static const struct of_device_id vc4_hvs_dt_match[] = {
> + { .compatible = "brcm,vc4-hvs" },
> + {}
> +};
> +
> +struct platform_driver vc4_hvs_driver = {
> + .probe = vc4_hvs_dev_probe,
> + .remove = vc4_hvs_dev_remove,
> + .driver = {
> + .name = "vc4_hvs",
> + .of_match_table = vc4_hvs_dt_match,
> + },
> +};
> diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
> new file mode 100644
> index 0000000..e5e96bc
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/vc4_kms.c
> @@ -0,0 +1,84 @@
> +/*
> + * Copyright (C) 2015 Broadcom
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +/**
> + * DOC: VC4 KMS
> + *
> + * This is the general code for implementing KMS mode setting that
> + * doesn't clearly associate with any of the other objects (plane,
> + * crtc, HDMI encoder).
> + */
> +
> +#include "drm_crtc.h"
> +#include "drm_atomic_helper.h"
> +#include "drm_crtc_helper.h"
> +#include "drm_plane_helper.h"
> +#include "drm_fb_cma_helper.h"
> +#include "vc4_drv.h"
> +
> +static const struct drm_mode_config_funcs vc4_mode_funcs = {
> + .atomic_check = drm_atomic_helper_check,
> + .atomic_commit = drm_atomic_helper_commit,
> + .fb_create = drm_fb_cma_create,
> +};
> +
> +/* Calls out to initialize all of the VC4 KMS objects. */
> +static int vc4_init_modeset_objects(struct drm_device *dev)
> +{
> + struct drm_encoder *encoder;
> + struct drm_connector *connector;
> + int ret = 0;
> +
> + encoder = vc4_hdmi_encoder_init(dev);
> + if (IS_ERR(encoder)) {
> + dev_err(dev->dev, "failed to construct HDMI encoder\n");
> + ret = PTR_ERR(encoder);
> + goto fail;
> + }
> +
> + connector = vc4_hdmi_connector_init(dev, encoder);
> + if (IS_ERR(connector)) {
> + ret = PTR_ERR(connector);
> + dev_err(dev->dev, "failed to initialize HDMI connector\n");
> + goto fail;
> + }
> +
> +fail:
> + return ret;
> +}
> +
> +int vc4_kms_load(struct drm_device *dev)
> +{
> + int ret;
> +
> + ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
> + if (ret < 0) {
> + dev_err(dev->dev, "failed to initialize vblank\n");
> + return ret;
> + }
> +
> + dev->mode_config.max_width = 2048;
> + dev->mode_config.max_height = 2048;
> + dev->mode_config.funcs = &vc4_mode_funcs;
> + dev->mode_config.preferred_depth = 24;
> +
> + ret = vc4_init_modeset_objects(dev);
> + if (ret)
> + goto fail;
> +
> + drm_mode_config_reset(dev);
> +
> + drm_fbdev_cma_init(dev, 32,
> + dev->mode_config.num_crtc,
> + dev->mode_config.num_connector);
> +
> + drm_kms_helper_poll_init(dev);
> +
> +fail:
> + return ret;
> +}
> diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
> new file mode 100644
> index 0000000..cdd8b10
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/vc4_plane.c
> @@ -0,0 +1,320 @@
> +/*
> + * Copyright (C) 2015 Broadcom
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +/**
> + * DOC: VC4 plane module
> + *
> + * Each DRM plane is a layer of pixels being scanned out by the HVS.
> + *
> + * At atomic modeset check time, we compute the HVS display element
> + * state that would be necessary for displaying the plane (giving us a
> + * chance to figure out if a plane configuration is invalid), then at
> + * atomic flush time the CRTC will ask us to write our element state
> + * into the region of the HVS that it has allocated for us.
> + */
> +
> +#include "vc4_drv.h"
> +#include "vc4_regs.h"
> +#include "drm_atomic_helper.h"
> +#include "drm_fb_cma_helper.h"
> +#include "drm_plane_helper.h"
> +
> +struct vc4_plane_state {
> + struct drm_plane_state base;
> + u32 *dlist;
> + u32 dlist_size; /* Number of dwords in allocated for the display list */
> + u32 dlist_count; /* Number of used dwords in the display list. */
> +};
> +
> +static inline struct vc4_plane_state *
> +to_vc4_plane_state(struct drm_plane_state *state)
> +{
> + return (struct vc4_plane_state *)state;
> +}
> +
> +static const struct hvs_format {
> + u32 drm; /* DRM_FORMAT_* */
> + u32 hvs; /* HVS_FORMAT_* */
> + u32 pixel_order;
> + bool has_alpha;
> +} hvs_formats[] = {
> + {
> + .drm = DRM_FORMAT_XRGB8888, .hvs = HVS_PIXEL_FORMAT_RGBA8888,
> + .pixel_order = HVS_PIXEL_ORDER_ABGR, .has_alpha = false,
> + },
> + {
> + .drm = DRM_FORMAT_ARGB8888, .hvs = HVS_PIXEL_FORMAT_RGBA8888,
> + .pixel_order = HVS_PIXEL_ORDER_ABGR, .has_alpha = true,
> + },
> +};
> +
> +static const struct hvs_format *vc4_get_hvs_format(u32 drm_format)
> +{
> + unsigned i;
> +
> + for (i = 0; i < ARRAY_SIZE(hvs_formats); i++) {
> + if (hvs_formats[i].drm == drm_format)
> + return &hvs_formats[i];
> + }
> +
> + return NULL;
> +}
> +
> +static bool plane_enabled(struct drm_plane_state *state)
> +{
> + return state->fb && state->crtc;
> +}
> +
> +struct drm_plane_state *vc4_plane_duplicate_state(struct drm_plane *plane)
> +{
> + struct vc4_plane_state *vc4_state;
> +
> + if (WARN_ON(!plane->state))
> + return NULL;
> +
> + vc4_state = kmemdup(plane->state, sizeof(*vc4_state), GFP_KERNEL);
> + if (!vc4_state)
> + return NULL;
> +
> + __drm_atomic_helper_plane_duplicate_state(plane, &vc4_state->base);
> +
> + if (vc4_state->dlist) {
> + vc4_state->dlist = kmemdup(vc4_state->dlist,
> + vc4_state->dlist_count * 4,
> + GFP_KERNEL);
> + if (!vc4_state->dlist) {
> + kfree(vc4_state);
> + return NULL;
> + }
> + vc4_state->dlist_size = vc4_state->dlist_count;
> + }
> +
> + return &vc4_state->base;
> +}
> +
> +void vc4_plane_destroy_state(struct drm_plane *plane,
> + struct drm_plane_state *state)
> +{
> + struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
> +
> + kfree(vc4_state->dlist);
> + __drm_atomic_helper_plane_destroy_state(plane, &vc4_state->base);
> + kfree(state);
> +}
> +
> +/* Called during init to allocate the plane's atomic state. */
> +void vc4_plane_reset(struct drm_plane *plane)
> +{
> + struct vc4_plane_state *vc4_state;
> +
> + WARN_ON(plane->state);
> +
> + vc4_state = kzalloc(sizeof(*vc4_state), GFP_KERNEL);
> + if (!vc4_state)
> + return;
> +
> + plane->state = &vc4_state->base;
> + vc4_state->base.plane = plane;
> +}
> +
> +static void vc4_dlist_write(struct vc4_plane_state *vc4_state, u32 val)
> +{
> + if (vc4_state->dlist_count == vc4_state->dlist_size) {
> + u32 new_size = max(4u, vc4_state->dlist_count * 2);
> + u32 *new_dlist = kmalloc(new_size * 4, GFP_KERNEL);
> +
> + if (!new_dlist)
> + return;
> + memcpy(new_dlist, vc4_state->dlist, vc4_state->dlist_count * 4);
> +
> + kfree(vc4_state->dlist);
> + vc4_state->dlist = new_dlist;
> + vc4_state->dlist_size = new_size;
> + }
> +
> + vc4_state->dlist[vc4_state->dlist_count++] = val;
> +}
> +
> +/* Writes out a full display list for an active plane to the plane's
> + * private dlist state.
> + */
> +static int vc4_plane_mode_set(struct drm_plane *plane,
> + struct drm_plane_state *state)
> +{
> + struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
> + struct drm_framebuffer *fb = state->fb;
> + struct drm_gem_cma_object *bo = drm_fb_cma_get_gem_obj(fb, 0);
> + u32 ctl0_offset = vc4_state->dlist_count;
> + const struct hvs_format *format = vc4_get_hvs_format(fb->pixel_format);
> + uint32_t offset = fb->offsets[0];
> + int crtc_x = state->crtc_x;
> + int crtc_y = state->crtc_y;
> + int crtc_w = state->crtc_w;
> + int crtc_h = state->crtc_h;
> +
> + if (crtc_x < 0) {
> + offset += drm_format_plane_cpp(fb->pixel_format, 0) * -crtc_x;
> + crtc_w += crtc_x;
> + crtc_x = 0;
> + }
> +
> + if (crtc_y < 0) {
> + offset += fb->pitches[0] * -crtc_y;
> + crtc_h += crtc_y;
> + crtc_y = 0;
> + }
> +
> + vc4_dlist_write(vc4_state,
> + SCALER_CTL0_VALID |
> + (format->pixel_order << SCALER_CTL0_ORDER_SHIFT) |
> + (format->hvs << SCALER_CTL0_PIXEL_FORMAT_SHIFT) |
> + SCALER_CTL0_UNITY);
> +
> + /* Position Word 0: Image Positions and Alpha Value */
> + vc4_dlist_write(vc4_state,
> + VC4_SET_FIELD(0xff, SCALER_POS0_FIXED_ALPHA) |
> + VC4_SET_FIELD(crtc_x, SCALER_POS0_START_X) |
> + VC4_SET_FIELD(crtc_y, SCALER_POS0_START_Y));
> +
> + /* Position Word 1: Scaled Image Dimensions.
> + * Skipped due to SCALER_CTL0_UNITY scaling.
> + */
> +
> + /* Position Word 2: Source Image Size, Alpha Mode */
> + vc4_dlist_write(vc4_state,
> + VC4_SET_FIELD(format->has_alpha ?
> + SCALER_POS2_ALPHA_MODE_PIPELINE :
> + SCALER_POS2_ALPHA_MODE_FIXED,
> + SCALER_POS2_ALPHA_MODE) |
> + VC4_SET_FIELD(crtc_w, SCALER_POS2_WIDTH) |
> + VC4_SET_FIELD(crtc_h, SCALER_POS2_HEIGHT));
> +
> + /* Position Word 3: Context. Written by the HVS. */
> + vc4_dlist_write(vc4_state, 0xc0c0c0c0);
> +
> + /* Pointer Word 0: RGB / Y Pointer */
> + vc4_dlist_write(vc4_state, bo->paddr + offset);
> +
> + /* Pointer Context Word 0: Written by the HVS */
> + vc4_dlist_write(vc4_state, 0xc0c0c0c0);
> +
> + /* Pitch word 0: Pointer 0 Pitch */
> + vc4_dlist_write(vc4_state,
> + VC4_SET_FIELD(fb->pitches[0], SCALER_SRC_PITCH));
> +
> + vc4_state->dlist[ctl0_offset] |=
> + VC4_SET_FIELD(vc4_state->dlist_count, SCALER_CTL0_SIZE);
> +
> + return 0;
> +}
> +
> +/* If a modeset involves changing the setup of a plane, the atomic
> + * infrastructure will call this to validate a proposed plane setup.
> + * However, if a plane isn't getting updated, this (and the
> + * corresponding vc4_plane_atomic_update) won't get called. Thus, we
> + * compute the dlist here and have all active plane dlists get updated
> + * in the CRTC's flush.
> + */
> +static int vc4_plane_atomic_check(struct drm_plane *plane,
> + struct drm_plane_state *state)
> +{
> + struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
> +
> + vc4_state->dlist_count = 0;
> +
> + if (plane_enabled(state))
> + return vc4_plane_mode_set(plane, state);
> + else
> + return 0;
> +}
> +
> +static void vc4_plane_atomic_update(struct drm_plane *plane,
> + struct drm_plane_state *old_state)
> +{
> + /* No contents here. Since we don't know where in the CRTC's
> + * dlist we should be stored, our dlist is uploaded to the
> + * hardware with vc4_plane_write_dlist() at CRTC atomic_flush
> + * time.
> + */
> +}
> +
> +u32 vc4_plane_write_dlist(struct drm_plane *plane, u32 __iomem *dlist)
> +{
> + struct vc4_plane_state *vc4_state = to_vc4_plane_state(plane->state);
> + int i;
> +
> + /* Can't memcpy_toio() because it needs to be 32-bit writes. */
> + for (i = 0; i < vc4_state->dlist_count; i++)
> + writel(vc4_state->dlist[i], &dlist[i]);
> +
> + return vc4_state->dlist_count;
> +}
> +
> +u32 vc4_plane_dlist_size(struct drm_plane_state *state)
> +{
> + struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
> +
> + return vc4_state->dlist_count;
> +}
> +
> +static const struct drm_plane_helper_funcs vc4_plane_helper_funcs = {
> + .prepare_fb = NULL,
> + .cleanup_fb = NULL,
> + .atomic_check = vc4_plane_atomic_check,
> + .atomic_update = vc4_plane_atomic_update,
> +};
> +
> +static void vc4_plane_destroy(struct drm_plane *plane)
> +{
> + drm_plane_helper_disable(plane);
> + drm_plane_cleanup(plane);
> +}
> +
> +static const struct drm_plane_funcs vc4_plane_funcs = {
> + .update_plane = drm_atomic_helper_update_plane,
> + .disable_plane = drm_atomic_helper_disable_plane,
> + .destroy = vc4_plane_destroy,
> + .set_property = NULL,
> + .reset = vc4_plane_reset,
> + .atomic_duplicate_state = vc4_plane_duplicate_state,
> + .atomic_destroy_state = vc4_plane_destroy_state,
> +};
> +
> +struct drm_plane *vc4_plane_init(struct drm_device *dev,
> + enum drm_plane_type type)
> +{
> + struct drm_plane *plane = NULL;
> + struct vc4_plane *vc4_plane;
> + u32 formats[ARRAY_SIZE(hvs_formats)];
> + int ret = 0;
> + unsigned i;
> +
> + vc4_plane = devm_kzalloc(dev->dev, sizeof(*vc4_plane),
> + GFP_KERNEL);
> + if (!vc4_plane) {
> + ret = -ENOMEM;
> + goto fail;
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(hvs_formats); i++)
> + formats[i] = hvs_formats[i].drm;
> + plane = &vc4_plane->base;
> + ret = drm_universal_plane_init(dev, plane, 0xff,
> + &vc4_plane_funcs,
> + formats, ARRAY_SIZE(formats),
> + type);
> +
> + drm_plane_helper_add(plane, &vc4_plane_helper_funcs);
> +
> + return plane;
> +fail:
> + if (plane)
> + vc4_plane_destroy(plane);
> +
> + return ERR_PTR(ret);
> +}
> diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h
> new file mode 100644
> index 0000000..0eff631
> --- /dev/null
> +++ b/drivers/gpu/drm/vc4/vc4_regs.h
> @@ -0,0 +1,562 @@
> +/*
> + * Copyright © 2014-2015 Broadcom
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#define VC4_MASK(high, low) (((1 << ((high) - (low) + 1)) - 1) << (low))
> +/* Using the GNU statement expression extension */
> +#define VC4_SET_FIELD(value, field) \
> + ({ \
> + uint32_t fieldval = (value) << field##_SHIFT; \
> + WARN_ON((fieldval & ~field##_MASK) != 0); \
> + fieldval & field##_MASK; \
> + })
> +
> +#define VC4_GET_FIELD(word, field) (((word) & field##_MASK) >> \
> + field##_SHIFT)
> +
> +#define V3D_IDENT0 0x00000
> +# define V3D_EXPECTED_IDENT0 \
> + ((2 << 24) | \
> + ('V' << 0) | \
> + ('3' << 8) | \
> + ('D' << 16))
> +
> +#define V3D_IDENT1 0x00004
> +/* Multiples of 1kb */
> +# define V3D_IDENT1_VPM_SIZE_MASK VC4_MASK(31, 28)
> +# define V3D_IDENT1_VPM_SIZE_SHIFT 28
> +# define V3D_IDENT1_NSEM_MASK VC4_MASK(23, 16)
> +# define V3D_IDENT1_NSEM_SHIFT 16
> +# define V3D_IDENT1_TUPS_MASK VC4_MASK(15, 12)
> +# define V3D_IDENT1_TUPS_SHIFT 12
> +# define V3D_IDENT1_QUPS_MASK VC4_MASK(11, 8)
> +# define V3D_IDENT1_QUPS_SHIFT 8
> +# define V3D_IDENT1_NSLC_MASK VC4_MASK(7, 4)
> +# define V3D_IDENT1_NSLC_SHIFT 4
> +# define V3D_IDENT1_REV_MASK VC4_MASK(3, 0)
> +# define V3D_IDENT1_REV_SHIFT 0
> +
> +#define V3D_IDENT2 0x00008
> +#define V3D_SCRATCH 0x00010
> +#define V3D_L2CACTL 0x00020
> +# define V3D_L2CACTL_L2CCLR (1 << 2)
> +# define V3D_L2CACTL_L2CDIS (1 << 1)
> +# define V3D_L2CACTL_L2CENA (1 << 0)
> +
> +#define V3D_SLCACTL 0x00024
> +# define V3D_SLCACTL_T1CC_MASK VC4_MASK(27, 24)
> +# define V3D_SLCACTL_T1CC_SHIFT 24
> +# define V3D_SLCACTL_T0CC_MASK VC4_MASK(19, 16)
> +# define V3D_SLCACTL_T0CC_SHIFT 16
> +# define V3D_SLCACTL_UCC_MASK VC4_MASK(11, 8)
> +# define V3D_SLCACTL_UCC_SHIFT 8
> +# define V3D_SLCACTL_ICC_MASK VC4_MASK(3, 0)
> +# define V3D_SLCACTL_ICC_SHIFT 0
> +
> +#define V3D_INTCTL 0x00030
> +#define V3D_INTENA 0x00034
> +#define V3D_INTDIS 0x00038
> +# define V3D_INT_SPILLUSE (1 << 3)
> +# define V3D_INT_OUTOMEM (1 << 2)
> +# define V3D_INT_FLDONE (1 << 1)
> +# define V3D_INT_FRDONE (1 << 0)
> +
> +#define V3D_CT0CS 0x00100
> +#define V3D_CT1CS 0x00104
> +#define V3D_CTNCS(n) (V3D_CT0CS + 4 * n)
> +# define V3D_CTRSTA (1 << 15)
> +# define V3D_CTSEMA (1 << 12)
> +# define V3D_CTRTSD (1 << 8)
> +# define V3D_CTRUN (1 << 5)
> +# define V3D_CTSUBS (1 << 4)
> +# define V3D_CTERR (1 << 3)
> +# define V3D_CTMODE (1 << 0)
> +
> +#define V3D_CT0EA 0x00108
> +#define V3D_CT1EA 0x0010c
> +#define V3D_CTNEA(n) (V3D_CT0EA + 4 * (n))
> +#define V3D_CT0CA 0x00110
> +#define V3D_CT1CA 0x00114
> +#define V3D_CTNCA(n) (V3D_CT0CA + 4 * (n))
> +#define V3D_CT00RA0 0x00118
> +#define V3D_CT01RA0 0x0011c
> +#define V3D_CTNRA0(n) (V3D_CT00RA0 + 4 * (n))
> +#define V3D_CT0LC 0x00120
> +#define V3D_CT1LC 0x00124
> +#define V3D_CTNLC(n) (V3D_CT0LC + 4 * (n))
> +#define V3D_CT0PC 0x00128
> +#define V3D_CT1PC 0x0012c
> +#define V3D_CTNPC(n) (V3D_CT0PC + 4 * (n))
> +
> +#define V3D_PCS 0x00130
> +# define V3D_BMOOM (1 << 8)
> +# define V3D_RMBUSY (1 << 3)
> +# define V3D_RMACTIVE (1 << 2)
> +# define V3D_BMBUSY (1 << 1)
> +# define V3D_BMACTIVE (1 << 0)
> +
> +#define V3D_BFC 0x00134
> +#define V3D_RFC 0x00138
> +#define V3D_BPCA 0x00300
> +#define V3D_BPCS 0x00304
> +#define V3D_BPOA 0x00308
> +#define V3D_BPOS 0x0030c
> +#define V3D_BXCF 0x00310
> +#define V3D_SQRSV0 0x00410
> +#define V3D_SQRSV1 0x00414
> +#define V3D_SQCNTL 0x00418
> +#define V3D_SRQPC 0x00430
> +#define V3D_SRQUA 0x00434
> +#define V3D_SRQUL 0x00438
> +#define V3D_SRQCS 0x0043c
> +#define V3D_VPACNTL 0x00500
> +#define V3D_VPMBASE 0x00504
> +#define V3D_PCTRC 0x00670
> +#define V3D_PCTRE 0x00674
> +#define V3D_PCTR0 0x00680
> +#define V3D_PCTRS0 0x00684
> +#define V3D_PCTR1 0x00688
> +#define V3D_PCTRS1 0x0068c
> +#define V3D_PCTR2 0x00690
> +#define V3D_PCTRS2 0x00694
> +#define V3D_PCTR3 0x00698
> +#define V3D_PCTRS3 0x0069c
> +#define V3D_PCTR4 0x006a0
> +#define V3D_PCTRS4 0x006a4
> +#define V3D_PCTR5 0x006a8
> +#define V3D_PCTRS5 0x006ac
> +#define V3D_PCTR6 0x006b0
> +#define V3D_PCTRS6 0x006b4
> +#define V3D_PCTR7 0x006b8
> +#define V3D_PCTRS7 0x006bc
> +#define V3D_PCTR8 0x006c0
> +#define V3D_PCTRS8 0x006c4
> +#define V3D_PCTR9 0x006c8
> +#define V3D_PCTRS9 0x006cc
> +#define V3D_PCTR10 0x006d0
> +#define V3D_PCTRS10 0x006d4
> +#define V3D_PCTR11 0x006d8
> +#define V3D_PCTRS11 0x006dc
> +#define V3D_PCTR12 0x006e0
> +#define V3D_PCTRS12 0x006e4
> +#define V3D_PCTR13 0x006e8
> +#define V3D_PCTRS13 0x006ec
> +#define V3D_PCTR14 0x006f0
> +#define V3D_PCTRS14 0x006f4
> +#define V3D_PCTR15 0x006f8
> +#define V3D_PCTRS15 0x006fc
> +#define V3D_BGE 0x00f00
> +#define V3D_FDBGO 0x00f04
> +#define V3D_FDBGB 0x00f08
> +#define V3D_FDBGR 0x00f0c
> +#define V3D_FDBGS 0x00f10
> +#define V3D_ERRSTAT 0x00f20
> +
> +#define PV_CONTROL 0x00
> +# define PV_CONTROL_FORMAT_MASK VC4_MASK(23, 21)
> +# define PV_CONTROL_FORMAT_SHIFT 21
> +# define PV_CONTROL_FORMAT_24 0
> +# define PV_CONTROL_FORMAT_DSIV_16 1
> +# define PV_CONTROL_FORMAT_DSIC_16 2
> +# define PV_CONTROL_FORMAT_DSIV_18 3
> +# define PV_CONTROL_FORMAT_DSIV_24 4
> +
> +# define PV_CONTROL_FIFO_LEVEL_MASK VC4_MASK(20, 15)
> +# define PV_CONTROL_FIFO_LEVEL_SHIFT 15
> +# define PV_CONTROL_CLR_AT_START (1 << 14)
> +# define PV_CONTROL_TRIGGER_UNDERFLOW (1 << 13)
> +# define PV_CONTROL_WAIT_HSTART (1 << 12)
> +# define PV_CONTROL_CLK_SELECT_DSI 0
> +# define PV_CONTROL_CLK_SELECT_DPI_SMI_HDMI 1
> +# define PV_CONTROL_CLK_SELECT_MASK VC4_MASK(3, 2)
> +# define PV_CONTROL_CLK_SELECT_SHIFT 2
> +# define PV_CONTROL_FIFO_CLR (1 << 1)
> +# define PV_CONTROL_EN (1 << 0)
> +
> +#define PV_V_CONTROL 0x04
> +# define PV_VCONTROL_CONTINUOUS (1 << 1)
> +# define PV_VCONTROL_VIDEN (1 << 0)
> +
> +#define PV_VSYNCD 0x08
> +
> +#define PV_HORZA 0x0c
> +# define PV_HORZA_HBP_MASK VC4_MASK(31, 16)
> +# define PV_HORZA_HBP_SHIFT 16
> +# define PV_HORZA_HSYNC_MASK VC4_MASK(15, 0)
> +# define PV_HORZA_HSYNC_SHIFT 0
> +
> +#define PV_HORZB 0x10
> +# define PV_HORZB_HFP_MASK VC4_MASK(31, 16)
> +# define PV_HORZB_HFP_SHIFT 16
> +# define PV_HORZB_HACTIVE_MASK VC4_MASK(15, 0)
> +# define PV_HORZB_HACTIVE_SHIFT 0
> +
> +#define PV_VERTA 0x14
> +# define PV_VERTA_VBP_MASK VC4_MASK(31, 16)
> +# define PV_VERTA_VBP_SHIFT 16
> +# define PV_VERTA_VSYNC_MASK VC4_MASK(15, 0)
> +# define PV_VERTA_VSYNC_SHIFT 0
> +
> +#define PV_VERTB 0x18
> +# define PV_VERTB_VFP_MASK VC4_MASK(31, 16)
> +# define PV_VERTB_VFP_SHIFT 16
> +# define PV_VERTB_VACTIVE_MASK VC4_MASK(15, 0)
> +# define PV_VERTB_VACTIVE_SHIFT 0
> +
> +#define PV_VERTA_EVEN 0x1c
> +#define PV_VERTB_EVEN 0x20
> +
> +#define PV_INTEN 0x24
> +#define PV_INTSTAT 0x28
> +# define PV_INT_VID_IDLE (1 << 9)
> +# define PV_INT_VFP_END (1 << 8)
> +# define PV_INT_VFP_START (1 << 7)
> +# define PV_INT_VACT_START (1 << 6)
> +# define PV_INT_VBP_START (1 << 5)
> +# define PV_INT_VSYNC_START (1 << 4)
> +# define PV_INT_HFP_START (1 << 3)
> +# define PV_INT_HACT_START (1 << 2)
> +# define PV_INT_HBP_START (1 << 1)
> +# define PV_INT_HSYNC_START (1 << 0)
> +
> +#define PV_STAT 0x2c
> +
> +#define PV_HACT_ACT 0x30
> +
> +#define SCALER_DISPCTRL 0x00000000
> +/* Global register for clock gating the HVS */
> +# define SCALER_DISPCTRL_ENABLE (1 << 31)
> +# define SCALER_DISPCTRL_DSP2EISLUR (1 << 15)
> +# define SCALER_DISPCTRL_DSP1EISLUR (1 << 14)
> +/* Enables Display 0 short line and underrun contribution to
> + * SCALER_DISPSTAT_IRQDISP0. Note that short frame contributions are
> + * always enabled.
> + */
> +# define SCALER_DISPCTRL_DSP0EISLUR (1 << 13)
> +# define SCALER_DISPCTRL_DSP2EIEOLN (1 << 12)
> +# define SCALER_DISPCTRL_DSP2EIEOF (1 << 11)
> +# define SCALER_DISPCTRL_DSP1EIEOLN (1 << 10)
> +# define SCALER_DISPCTRL_DSP1EIEOF (1 << 9)
> +/* Enables Display 0 end-of-line-N contribution to
> + * SCALER_DISPSTAT_IRQDISP0
> + */
> +# define SCALER_DISPCTRL_DSP0EIEOLN (1 << 8)
> +/* Enables Display 0 EOF contribution to SCALER_DISPSTAT_IRQDISP0 */
> +# define SCALER_DISPCTRL_DSP0EIEOF (1 << 7)
> +
> +# define SCALER_DISPCTRL_SLVRDEIRQ (1 << 6)
> +# define SCALER_DISPCTRL_SLVWREIRQ (1 << 5)
> +# define SCALER_DISPCTRL_DMAEIRQ (1 << 4)
> +# define SCALER_DISPCTRL_DISP2EIRQ (1 << 3)
> +# define SCALER_DISPCTRL_DISP1EIRQ (1 << 2)
> +/* Enables interrupt generation on the enabled EOF/EOLN/EISLUR
> + * bits and short frames..
> + */
> +# define SCALER_DISPCTRL_DISP0EIRQ (1 << 1)
> +/* Enables interrupt generation on scaler profiler interrupt. */
> +# define SCALER_DISPCTRL_SCLEIRQ (1 << 0)
> +
> +#define SCALER_DISPSTAT 0x00000004
> +# define SCALER_DISPSTAT_COBLOW2 (1 << 29)
> +# define SCALER_DISPSTAT_EOLN2 (1 << 28)
> +# define SCALER_DISPSTAT_ESFRAME2 (1 << 27)
> +# define SCALER_DISPSTAT_ESLINE2 (1 << 26)
> +# define SCALER_DISPSTAT_EUFLOW2 (1 << 25)
> +# define SCALER_DISPSTAT_EOF2 (1 << 24)
> +
> +# define SCALER_DISPSTAT_COBLOW1 (1 << 21)
> +# define SCALER_DISPSTAT_EOLN1 (1 << 20)
> +# define SCALER_DISPSTAT_ESFRAME1 (1 << 19)
> +# define SCALER_DISPSTAT_ESLINE1 (1 << 18)
> +# define SCALER_DISPSTAT_EUFLOW1 (1 << 17)
> +# define SCALER_DISPSTAT_EOF1 (1 << 16)
> +
> +# define SCALER_DISPSTAT_RESP_MASK VC4_MASK(15, 14)
> +# define SCALER_DISPSTAT_RESP_SHIFT 14
> +# define SCALER_DISPSTAT_RESP_OKAY 0
> +# define SCALER_DISPSTAT_RESP_EXOKAY 1
> +# define SCALER_DISPSTAT_RESP_SLVERR 2
> +# define SCALER_DISPSTAT_RESP_DECERR 3
> +
> +# define SCALER_DISPSTAT_COBLOW0 (1 << 13)
> +/* Set when the DISPEOLN line is done compositing. */
> +# define SCALER_DISPSTAT_EOLN0 (1 << 12)
> +/* Set when VSTART is seen but there are still pixels in the current
> + * output line.
> + */
> +# define SCALER_DISPSTAT_ESFRAME0 (1 << 11)
> +/* Set when HSTART is seen but there are still pixels in the current
> + * output line.
> + */
> +# define SCALER_DISPSTAT_ESLINE0 (1 << 10)
> +/* Set when the the downstream tries to read from the display FIFO
> + * while it's empty.
> + */
> +# define SCALER_DISPSTAT_EUFLOW0 (1 << 9)
> +/* Set when the display mode changes from RUN to EOF */
> +# define SCALER_DISPSTAT_EOF0 (1 << 8)
> +
> +/* Set on AXI invalid DMA ID error. */
> +# define SCALER_DISPSTAT_DMA_ERROR (1 << 7)
> +/* Set on AXI slave read decode error */
> +# define SCALER_DISPSTAT_IRQSLVRD (1 << 6)
> +/* Set on AXI slave write decode error */
> +# define SCALER_DISPSTAT_IRQSLVWR (1 << 5)
> +/* Set when SCALER_DISPSTAT_DMA_ERROR is set, or
> + * SCALER_DISPSTAT_RESP_ERROR is not SCALER_DISPSTAT_RESP_OKAY.
> + */
> +# define SCALER_DISPSTAT_IRQDMA (1 << 4)
> +# define SCALER_DISPSTAT_IRQDISP2 (1 << 3)
> +# define SCALER_DISPSTAT_IRQDISP1 (1 << 2)
> +/* Set when any of the EOF/EOLN/ESFRAME/ESLINE bits are set and their
> + * corresponding interrupt bit is enabled in DISPCTRL.
> + */
> +# define SCALER_DISPSTAT_IRQDISP0 (1 << 1)
> +/* On read, the profiler interrupt. On write, clear *all* interrupt bits. */
> +# define SCALER_DISPSTAT_IRQSCL (1 << 0)
> +
> +#define SCALER_DISPID 0x00000008
> +#define SCALER_DISPECTRL 0x0000000c
> +#define SCALER_DISPPROF 0x00000010
> +#define SCALER_DISPDITHER 0x00000014
> +#define SCALER_DISPEOLN 0x00000018
> +#define SCALER_DISPLIST0 0x00000020
> +#define SCALER_DISPLIST1 0x00000024
> +#define SCALER_DISPLIST2 0x00000028
> +#define SCALER_DISPLSTAT 0x0000002c
> +#define SCALER_DISPLISTX(x) (SCALER_DISPLIST0 + \
> + (x) * (SCALER_DISPLIST1 - \
> + SCALER_DISPLIST0))
> +
> +#define SCALER_DISPLACT0 0x00000030
> +#define SCALER_DISPLACT1 0x00000034
> +#define SCALER_DISPLACT2 0x00000038
> +#define SCALER_DISPCTRL0 0x00000040
> +# define SCALER_DISPCTRLX_ENABLE (1 << 31)
> +# define SCALER_DISPCTRLX_RESET (1 << 30)
> +# define SCALER_DISPCTRLX_WIDTH_MASK VC4_MASK(23, 12)
> +# define SCALER_DISPCTRLX_WIDTH_SHIFT 12
> +# define SCALER_DISPCTRLX_HEIGHT_MASK VC4_MASK(11, 0)
> +# define SCALER_DISPCTRLX_HEIGHT_SHIFT 0
> +
> +#define SCALER_DISPBKGND0 0x00000044
> +#define SCALER_DISPSTAT0 0x00000048
> +#define SCALER_DISPBASE0 0x0000004c
> +# define SCALER_DISPSTATX_MODE_MASK VC4_MASK(31, 30)
> +# define SCALER_DISPSTATX_MODE_SHIFT 30
> +# define SCALER_DISPSTATX_MODE_DISABLED 0
> +# define SCALER_DISPSTATX_MODE_INIT 1
> +# define SCALER_DISPSTATX_MODE_RUN 2
> +# define SCALER_DISPSTATX_MODE_EOF 3
> +# define SCALER_DISPSTATX_FULL (1 << 29)
> +# define SCALER_DISPSTATX_EMPTY (1 << 28)
> +#define SCALER_DISPCTRL1 0x00000050
> +#define SCALER_DISPBKGND1 0x00000054
> +#define SCALER_DISPSTAT1 0x00000058
> +#define SCALER_DISPSTATX(x) (SCALER_DISPSTAT0 + \
> + (x) * (SCALER_DISPSTAT1 - \
> + SCALER_DISPSTAT0))
> +#define SCALER_DISPBASE1 0x0000005c
> +#define SCALER_DISPCTRL2 0x00000060
> +#define SCALER_DISPCTRLX(x) (SCALER_DISPCTRL0 + \
> + (x) * (SCALER_DISPCTRL1 - \
> + SCALER_DISPCTRL0))
> +#define SCALER_DISPBKGND2 0x00000064
> +#define SCALER_DISPSTAT2 0x00000068
> +#define SCALER_DISPBASE2 0x0000006c
> +#define SCALER_DISPALPHA2 0x00000070
> +#define SCALER_GAMADDR 0x00000078
> +#define SCALER_GAMDATA 0x000000e0
> +#define SCALER_DLIST_START 0x00002000
> +#define SCALER_DLIST_SIZE 0x00004000
> +
> +#define VC4_HDMI_CORE_REV 0x000
> +
> +#define VC4_HDMI_SW_RESET_CONTROL 0x004
> +# define VC4_HDMI_SW_RESET_FORMAT_DETECT (1 << 1)
> +# define VC4_HDMI_SW_RESET_HDMI (1 << 0)
> +
> +#define VC4_HDMI_HOTPLUG_INT 0x008
> +
> +#define VC4_HDMI_HOTPLUG 0x00c
> +# define VC4_HDMI_HOTPLUG_CONNECTED (1 << 0)
> +
> +#define VC4_HDMI_RAM_PACKET_CONFIG 0x0a0
> +# define VC4_HDMI_RAM_PACKET_ENABLE (1 << 16)
> +
> +#define VC4_HDMI_HORZA 0x0c4
> +# define VC4_HDMI_HORZA_VPOS (1 << 14)
> +# define VC4_HDMI_HORZA_HPOS (1 << 13)
> +/* Horizontal active pixels (hdisplay). */
> +# define VC4_HDMI_HORZA_HAP_MASK VC4_MASK(12, 0)
> +# define VC4_HDMI_HORZA_HAP_SHIFT 0
> +
> +#define VC4_HDMI_HORZB 0x0c8
> +/* Horizontal pack porch (htotal - hsync_end). */
> +# define VC4_HDMI_HORZB_HBP_MASK VC4_MASK(29, 20)
> +# define VC4_HDMI_HORZB_HBP_SHIFT 20
> +/* Horizontal sync pulse (hsync_end - hsync_start). */
> +# define VC4_HDMI_HORZB_HSP_MASK VC4_MASK(19, 10)
> +# define VC4_HDMI_HORZB_HSP_SHIFT 10
> +/* Horizontal front porch (hsync_start - hdisplay). */
> +# define VC4_HDMI_HORZB_HFP_MASK VC4_MASK(9, 0)
> +# define VC4_HDMI_HORZB_HFP_SHIFT 0
> +
> +#define VC4_HDMI_FIFO_CTL 0x05c
> +# define VC4_HDMI_FIFO_CTL_RECENTER_DONE (1 << 14)
> +# define VC4_HDMI_FIFO_CTL_USE_EMPTY (1 << 13)
> +# define VC4_HDMI_FIFO_CTL_ON_VB (1 << 7)
> +# define VC4_HDMI_FIFO_CTL_RECENTER (1 << 6)
> +# define VC4_HDMI_FIFO_CTL_FIFO_RESET (1 << 5)
> +# define VC4_HDMI_FIFO_CTL_USE_PLL_LOCK (1 << 4)
> +# define VC4_HDMI_FIFO_CTL_INV_CLK_XFR (1 << 3)
> +# define VC4_HDMI_FIFO_CTL_CAPTURE_PTR (1 << 2)
> +# define VC4_HDMI_FIFO_CTL_USE_FULL (1 << 1)
> +# define VC4_HDMI_FIFO_CTL_MASTER_SLAVE_N (1 << 0)
> +# define VC4_HDMI_FIFO_VALID_WRITE_MASK 0xefff
> +
> +#define VC4_HDMI_SCHEDULER_CONTROL 0x0c0
> +# define VC4_HDMI_SCHEDULER_CONTROL_MANUAL_FORMAT (1 << 15)
> +# define VC4_HDMI_SCHEDULER_CONTROL_IGNORE_VSYNC_PREDICTS (1 << 5)
> +# define VC4_HDMI_SCHEDULER_CONTROL_VERT_ALWAYS_KEEPOUT (1 << 3)
> +# define VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE (1 << 1)
> +# define VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI (1 << 0)
> +
> +#define VC4_HDMI_VERTA0 0x0cc
> +#define VC4_HDMI_VERTA1 0x0d4
> +/* Vertical sync pulse (vsync_end - vsync_start). */
> +# define VC4_HDMI_VERTA_VSP_MASK VC4_MASK(24, 20)
> +# define VC4_HDMI_VERTA_VSP_SHIFT 20
> +/* Vertical front porch (vsync_start - vdisplay). */
> +# define VC4_HDMI_VERTA_VFP_MASK VC4_MASK(19, 13)
> +# define VC4_HDMI_VERTA_VFP_SHIFT 13
> +/* Vertical active lines (vdisplay). */
> +# define VC4_HDMI_VERTA_VAL_MASK VC4_MASK(12, 0)
> +# define VC4_HDMI_VERTA_VAL_SHIFT 0
> +
> +#define VC4_HDMI_VERTB0 0x0d0
> +#define VC4_HDMI_VERTB1 0x0d8
> +/* Vertical sync pulse offset (for interlaced) */
> +# define VC4_HDMI_VERTB_VSPO_MASK VC4_MASK(21, 9)
> +# define VC4_HDMI_VERTB_VSPO_SHIFT 9
> +/* Vertical pack porch (vtotal - vsync_end). */
> +# define VC4_HDMI_VERTB_VBP_MASK VC4_MASK(8, 0)
> +# define VC4_HDMI_VERTB_VBP_SHIFT 0
> +
> +#define VC4_HDMI_TX_PHY_RESET_CTL 0x2c0
> +
> +#define VC4_HD_M_CTL 0x00c
> +# define VC4_HD_M_SW_RST (1 << 2)
> +# define VC4_HD_M_ENABLE (1 << 0)
> +
> +#define VC4_HD_MAI_CTL 0x014
> +
> +#define VC4_HD_VID_CTL 0x038
> +# define VC4_HD_VID_CTL_ENABLE (1 << 31)
> +# define VC4_HD_VID_CTL_UNDERFLOW_ENABLE (1 << 30)
> +# define VC4_HD_VID_CTL_FRAME_COUNTER_RESET (1 << 29)
> +# define VC4_HD_VID_CTL_VSYNC_LOW (1 << 28)
> +# define VC4_HD_VID_CTL_HSYNC_LOW (1 << 27)
> +
> +#define VC4_HD_CSC_CTL 0x040
> +# define VC4_HD_CSC_CTL_ORDER_MASK VC4_MASK(7, 5)
> +# define VC4_HD_CSC_CTL_ORDER_SHIFT 5
> +# define VC4_HD_CSC_CTL_ORDER_RGB 0
> +# define VC4_HD_CSC_CTL_ORDER_BGR 1
> +# define VC4_HD_CSC_CTL_ORDER_BRG 2
> +# define VC4_HD_CSC_CTL_ORDER_GRB 3
> +# define VC4_HD_CSC_CTL_ORDER_GBR 4
> +# define VC4_HD_CSC_CTL_ORDER_RBG 5
> +# define VC4_HD_CSC_CTL_PADMSB (1 << 4)
> +# define VC4_HD_CSC_CTL_MODE_MASK VC4_MASK(3, 2)
> +# define VC4_HD_CSC_CTL_MODE_SHIFT 2
> +# define VC4_HD_CSC_CTL_MODE_RGB_TO_SD_YPRPB 0
> +# define VC4_HD_CSC_CTL_MODE_RGB_TO_HD_YPRPB 1
> +# define VC4_HD_CSC_CTL_MODE_CUSTOM 2
> +# define VC4_HD_CSC_CTL_RGB2YCC (1 << 1)
> +# define VC4_HD_CSC_CTL_ENABLE (1 << 0)
> +
> +#define VC4_HD_FRAME_COUNT 0x068
> +
> +/* HVS display list information. */
> +#define HVS_BOOTLOADER_DLIST_END 32
> +
> +enum hvs_pixel_format {
> + /* 8bpp */
> + HVS_PIXEL_FORMAT_RGB332 = 0,
> + /* 16bpp */
> + HVS_PIXEL_FORMAT_RGBA4444 = 1,
> + HVS_PIXEL_FORMAT_RGB555 = 2,
> + HVS_PIXEL_FORMAT_RGBA5551 = 3,
> + HVS_PIXEL_FORMAT_RGB565 = 4,
> + /* 24bpp */
> + HVS_PIXEL_FORMAT_RGB888 = 5,
> + HVS_PIXEL_FORMAT_RGBA6666 = 6,
> + /* 32bpp */
> + HVS_PIXEL_FORMAT_RGBA8888 = 7
> +};
> +
> +/* Note: the LSB is the rightmost character shown. Only valid for
> + * HVS_PIXEL_FORMAT_RGB8888, not RGB888.
> + */
> +#define HVS_PIXEL_ORDER_RGBA 0
> +#define HVS_PIXEL_ORDER_BGRA 1
> +#define HVS_PIXEL_ORDER_ARGB 2
> +#define HVS_PIXEL_ORDER_ABGR 3
> +
> +#define HVS_PIXEL_ORDER_XBRG 0
> +#define HVS_PIXEL_ORDER_XRBG 1
> +#define HVS_PIXEL_ORDER_XRGB 2
> +#define HVS_PIXEL_ORDER_XBGR 3
> +
> +#define HVS_PIXEL_ORDER_XYCBCR 0
> +#define HVS_PIXEL_ORDER_XYCRCB 1
> +#define HVS_PIXEL_ORDER_YXCBCR 2
> +#define HVS_PIXEL_ORDER_YXCRCB 3
> +
> +#define SCALER_CTL0_END (1 << 31)
> +#define SCALER_CTL0_VALID (1 << 30)
> +
> +#define SCALER_CTL0_SIZE_MASK VC4_MASK(29, 24)
> +#define SCALER_CTL0_SIZE_SHIFT 24
> +
> +#define SCALER_CTL0_HFLIP (1 << 16)
> +#define SCALER_CTL0_VFLIP (1 << 15)
> +
> +#define SCALER_CTL0_ORDER_MASK VC4_MASK(14, 13)
> +#define SCALER_CTL0_ORDER_SHIFT 13
> +
> +/* Set to indicate no scaling. */
> +#define SCALER_CTL0_UNITY (1 << 4)
> +
> +#define SCALER_CTL0_PIXEL_FORMAT_MASK VC4_MASK(3, 0)
> +#define SCALER_CTL0_PIXEL_FORMAT_SHIFT 0
> +
> +#define SCALER_POS0_FIXED_ALPHA_MASK VC4_MASK(31, 24)
> +#define SCALER_POS0_FIXED_ALPHA_SHIFT 24
> +
> +#define SCALER_POS0_START_Y_MASK VC4_MASK(23, 12)
> +#define SCALER_POS0_START_Y_SHIFT 12
> +
> +#define SCALER_POS0_START_X_MASK VC4_MASK(11, 0)
> +#define SCALER_POS0_START_X_SHIFT 0
> +
> +#define SCALER_POS2_ALPHA_MODE_MASK VC4_MASK(31, 30)
> +#define SCALER_POS2_ALPHA_MODE_SHIFT 30
> +#define SCALER_POS2_ALPHA_MODE_PIPELINE 0
> +#define SCALER_POS2_ALPHA_MODE_FIXED 1
> +#define SCALER_POS2_ALPHA_MODE_FIXED_NONZERO 2
> +#define SCALER_POS2_ALPHA_MODE_FIXED_OVER_0x07 3
> +
> +#define SCALER_POS2_HEIGHT_MASK VC4_MASK(27, 16)
> +#define SCALER_POS2_HEIGHT_SHIFT 16
> +
> +#define SCALER_POS2_WIDTH_MASK VC4_MASK(11, 0)
> +#define SCALER_POS2_WIDTH_SHIFT 0
> +
> +#define SCALER_SRC_PITCH_MASK VC4_MASK(15, 0)
> +#define SCALER_SRC_PITCH_SHIFT 0
> --
> 2.1.4
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/dri-devel

--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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