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Commit 1f43710a authored by Dave Airlie's avatar Dave Airlie
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Merge tag 'drm-vc4-next-2015-10-21' of http://github.com/anholt/linux into drm-next 

This pull request introduces the vc4 driver, for kernel modesetting on
the Raspberry Pi (bcm2835/bcm2836 architectures).  It currently
supports a display plane and cursor on the HDMI output.  The driver
doesn't do 3D, power management, or overlay planes yet.

[airlied: fixup the enable/disable vblank APIs]
Acked-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>

* tag 'drm-vc4-next-2015-10-21' of http://github.com/anholt/linux:
  drm/vc4: Allow vblank to be disabled
  drm/vc4: Use the fbdev_cma helpers
  drm/vc4: Add KMS support for Raspberry Pi.
  drm/vc4: Add devicetree bindings for VC4.
parents affa0e03 98a44504
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Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt 0 → 100644
View file @ 1f43710a
Broadcom VC4 (VideoCore4) GPU
The VC4 device present on the Raspberry Pi includes a display system
with HDMI output and the HVS (Hardware Video Scaler) for compositing
display planes.
Required properties for VC4:
- compatible: Should be "brcm,bcm2835-vc4"
Required properties for Pixel Valve:
- compatible: Should be one of "brcm,bcm2835-pixelvalve0",
"brcm,bcm2835-pixelvalve1", or "brcm,bcm2835-pixelvalve2"
- reg: Physical base address and length of the PV's registers
- interrupts: The interrupt number
See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
Required properties for HVS:
- compatible: Should be "brcm,bcm2835-hvs"
- reg: Physical base address and length of the HVS's registers
- interrupts: The interrupt number
See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
Required properties for HDMI
- compatible: Should be "brcm,bcm2835-hdmi"
- reg: Physical base address and length of the two register ranges
("HDMI" and "HD", in that order)
- interrupts: The interrupt numbers
See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
- ddc: phandle of the I2C controller used for DDC EDID probing
- clocks: a) hdmi: The HDMI state machine clock
b) pixel: The pixel clock.
Optional properties for HDMI:
- hpd-gpios: The GPIO pin for HDMI hotplug detect (if it doesn't appear
as an interrupt/status bit in the HDMI controller
itself). See bindings/pinctrl/brcm,bcm2835-gpio.txt
Example:
pixelvalve@7e807000 {
compatible = "brcm,bcm2835-pixelvalve2";
reg = <0x7e807000 0x100>;
interrupts = <2 10>; /* pixelvalve */
};
hvs@7e400000 {
compatible = "brcm,bcm2835-hvs";
reg = <0x7e400000 0x6000>;
interrupts = <2 1>;
};
hdmi: hdmi@7e902000 {
compatible = "brcm,bcm2835-hdmi";
reg = <0x7e902000 0x600>,
<0x7e808000 0x100>;
interrupts = <2 8>, <2 9>;
ddc = <&i2c2>;
hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
clocks = <&clocks BCM2835_PLLH_PIX>,
<&clocks BCM2835_CLOCK_HSM>;
clock-names = "pixel", "hdmi";
};
vc4: gpu {
compatible = "brcm,bcm2835-vc4";
};
drivers/gpu/drm/Kconfig
View file @ 1f43710a
......@@ -264,3 +264,5 @@ 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"
drivers/gpu/drm/Makefile
View file @ 1f43710a
......@@ -45,6 +45,7 @@ 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/
......
drivers/gpu/drm/vc4/Kconfig 0 → 100644
View file @ 1f43710a
config DRM_VC4
tristate "Broadcom VC4 Graphics"
depends on ARCH_BCM2835 || COMPILE_TEST
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.
drivers/gpu/drm/vc4/Makefile 0 → 100644
View file @ 1f43710a
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
drivers/gpu/drm/vc4/vc4_bo.c 0 → 100644
View file @ 1f43710a
/*
* 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;
}
drivers/gpu/drm/vc4/vc4_crtc.c 0 → 100644
View file @ 1f43710a
/*
* 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
* output's clock plus its configuration. It pulls scaled pixels from
* the HVS at that timing, and feeds it to the encoder.
*
* 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.
*
* The 2835 has 3 different pixel valves. pv0 in the audio power
* domain feeds DSI0 or DPI, while pv1 feeds DS1 or SMI. pv2 in the
* image domain can feed either HDMI or the SDTV controller. The
* pixel valve chooses from the CPRMAN clocks (HSM for HDMI, VEC for
* SDTV, etc.) according to which output type is chosen in the mux.
*
* For power management, the pixel valve's registers are all clocked
* by the AXI clock, while the timings and FIFOs make use of the
* output-specific clock. Since the encoders also directly consume
* the CPRMAN clocks, and know what timings they need, they are the
* ones that set the clock.
*/
#include "drm_atomic.h"
#include "drm_atomic_helper.h"
#include "drm_crtc_helper.h"
#include "linux/clk.h"
#include "linux/component.h"
#include "linux/of_device.h"
#include "vc4_drv.h"
#include "vc4_regs.h"
struct vc4_crtc {
struct drm_crtc base;
const struct vc4_crtc_data *data;
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_crtc_data {
/* Which channel of the HVS this pixelvalve sources from. */
int hvs_channel;
enum vc4_encoder_type encoder0_type;
enum vc4_encoder_type encoder1_type;
};
#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;
}
}
/*
* Returns the clock select bit for the connector attached to the
* CRTC.
*/
static int vc4_get_clock_select(struct drm_crtc *crtc)
{
struct drm_connector *connector;
drm_for_each_connector(connector, crtc->dev) {
if (connector && connector->state->crtc == crtc) {
struct drm_encoder *encoder = connector->encoder;
struct vc4_encoder *vc4_encoder =
to_vc4_encoder(encoder);
return vc4_encoder->clock_select;
}
}
return -1;
}
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;
bool interlace = mode->flags & DRM_MODE_FLAG_INTERLACE;
u32 vactive = (mode->vdisplay >> (interlace ? 1 : 0));
u32 format = PV_CONTROL_FORMAT_24;
bool debug_dump_regs = false;
int clock_select = vc4_get_clock_select(crtc);
if (debug_dump_regs) {
DRM_INFO("CRTC %d regs before:\n", drm_crtc_index(crtc));
vc4_crtc_dump_regs(vc4_crtc);
}
/* 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));
if (interlace) {
CRTC_WRITE(PV_VERTA_EVEN,
VC4_SET_FIELD(mode->vtotal - mode->vsync_end - 1,
PV_VERTA_VBP) |
VC4_SET_FIELD(mode->vsync_end - mode->vsync_start,
PV_VERTA_VSYNC));
CRTC_WRITE(PV_VERTB_EVEN,
VC4_SET_FIELD(mode->vsync_start - mode->vdisplay,
PV_VERTB_VFP) |
VC4_SET_FIELD(vactive, PV_VERTB_VACTIVE));
}
CRTC_WRITE(PV_HACT_ACT, mode->hdisplay);
CRTC_WRITE(PV_V_CONTROL,
PV_VCONTROL_CONTINUOUS |
(interlace ? PV_VCONTROL_INTERLACE : 0));
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(clock_select, 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);
u32 chan = vc4_crtc->channel;
int ret;
require_hvs_enabled(dev);
CRTC_WRITE(PV_V_CONTROL,
CRTC_READ(PV_V_CONTROL) & ~PV_VCONTROL_VIDEN);
ret = wait_for(!(CRTC_READ(PV_V_CONTROL) & PV_VCONTROL_VIDEN), 1);
WARN_ONCE(ret, "Timeout waiting for !PV_VCONTROL_VIDEN\n");
if (HVS_READ(SCALER_DISPCTRLX(chan)) &
SCALER_DISPCTRLX_ENABLE) {
HVS_WRITE(SCALER_DISPCTRLX(chan),
SCALER_DISPCTRLX_RESET);
/* While the docs say that reset is self-clearing, it
* seems it doesn't actually.
*/
HVS_WRITE(SCALER_DISPCTRLX(chan), 0);
}
/* Once we leave, the scaler should be disabled and its fifo empty. */
WARN_ON_ONCE(HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_RESET);
WARN_ON_ONCE(VC4_GET_FIELD(HVS_READ(SCALER_DISPSTATX(chan)),
SCALER_DISPSTATX_MODE) !=
SCALER_DISPSTATX_MODE_DISABLED);
WARN_ON_ONCE((HVS_READ(SCALER_DISPSTATX(chan)) &
(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;
/* The pixelvalve can only feed one encoder (and encoders are
* 1:1 with connectors.)
*/
if (drm_atomic_connectors_for_crtc(state->state, crtc) > 1)
return -EINVAL;
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, unsigned 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, unsigned 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 const struct vc4_crtc_data pv0_data = {
.hvs_channel = 0,
.encoder0_type = VC4_ENCODER_TYPE_DSI0,
.encoder1_type = VC4_ENCODER_TYPE_DPI,
};
static const struct vc4_crtc_data pv1_data = {
.hvs_channel = 2,
.encoder0_type = VC4_ENCODER_TYPE_DSI1,
.encoder1_type = VC4_ENCODER_TYPE_SMI,
};
static const struct vc4_crtc_data pv2_data = {
.hvs_channel = 1,
.encoder0_type = VC4_ENCODER_TYPE_VEC,
.encoder1_type = VC4_ENCODER_TYPE_HDMI,
};
static const struct of_device_id vc4_crtc_dt_match[] = {
{ .compatible = "brcm,bcm2835-pixelvalve0", .data = &pv0_data },
{ .compatible = "brcm,bcm2835-pixelvalve1", .data = &pv1_data },
{ .compatible = "brcm,bcm2835-pixelvalve2", .data = &pv2_data },
{}
};
static void vc4_set_crtc_possible_masks(struct drm_device *drm,
struct drm_crtc *crtc)
{
struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
struct drm_encoder *encoder;
drm_for_each_encoder(encoder, drm) {
struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
if (vc4_encoder->type == vc4_crtc->data->encoder0_type) {
vc4_encoder->clock_select = 0;
encoder->possible_crtcs |= drm_crtc_mask(crtc);
} else if (vc4_encoder->type == vc4_crtc->data->encoder1_type) {
vc4_encoder->clock_select = 1;
encoder->possible_crtcs |= drm_crtc_mask(crtc);
}
}
}
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;
const struct of_device_id *match;
int ret;
vc4_crtc = devm_kzalloc(dev, sizeof(*vc4_crtc), GFP_KERNEL);
if (!vc4_crtc)
return -ENOMEM;
crtc = &vc4_crtc->base;
match = of_match_device(vc4_crtc_dt_match, dev);
if (!match)
return -ENODEV;
vc4_crtc->data = match->data;
vc4_crtc->regs = vc4_ioremap_regs(pdev, 0);
if (IS_ERR(vc4_crtc->regs))
return PTR_ERR(vc4_crtc->regs);
/* 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 err;
}
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 err_primary;
}
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;
vc4_crtc->channel = vc4_crtc->data->hvs_channel;
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);
if (ret)
goto err_cursor;
vc4_set_crtc_possible_masks(drm, crtc);
platform_set_drvdata(pdev, vc4_crtc);
return 0;
err_cursor:
cursor_plane->funcs->destroy(cursor_plane);
err_primary:
primary_plane->funcs->destroy(primary_plane);
err:
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;
}
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,
},
};
drivers/gpu/drm/vc4/vc4_debugfs.c 0 → 100644
View file @ 1f43710a
/*
* 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);
}
drivers/gpu/drm/vc4/vc4_drv.c 0 → 100644
View file @ 1f43710a
/*
* 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 "drm_fb_cma_helper.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 void vc4_lastclose(struct drm_device *dev)
{
struct vc4_dev *vc4 = to_vc4_dev(dev);
if (vc4->fbdev)
drm_fbdev_cma_restore_mode(vc4->fbdev);
}
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),
.lastclose = vc4_lastclose,
.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 compare_dev(struct device *dev, void *data)
{
return dev == data;
}
static void vc4_match_add_drivers(struct device *dev,
struct component_match **match,
struct platform_driver *const *drivers,
int count)
{
int i;
for (i = 0; i < count; i++) {
struct device_driver *drv = &drivers[i]->driver;
struct device *p = NULL, *d;
while ((d = bus_find_device(&platform_bus_type, p, drv,
(void *)platform_bus_type.match))) {
put_device(p);
component_match_add(dev, match, compare_dev, d);
p = d;
}
put_device(p);
}
}
static int vc4_drm_bind(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm;
struct drm_connector *connector;
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;
/* Connector registration has to occur after DRM device
* registration, because it creates sysfs entries based on the
* DRM device.
*/
list_for_each_entry(connector, &drm->mode_config.connector_list, head) {
ret = drm_connector_register(connector);
if (ret)
goto unregister;
}
vc4_kms_load(drm);
return 0;
unregister:
drm_dev_unregister(drm);
unbind_all:
component_unbind_all(dev, drm);
unref:
drm_dev_unref(drm);
return ret;
}
static void vc4_drm_unbind(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm = platform_get_drvdata(pdev);
struct vc4_dev *vc4 = to_vc4_dev(drm);
if (vc4->fbdev)
drm_fbdev_cma_fini(vc4->fbdev);
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 struct platform_driver *const component_drivers[] = {
&vc4_hdmi_driver,
&vc4_crtc_driver,
&vc4_hvs_driver,
};
static int vc4_platform_drm_probe(struct platform_device *pdev)
{
struct component_match *match = NULL;
struct device *dev = &pdev->dev;
vc4_match_add_drivers(dev, &match,
component_drivers, ARRAY_SIZE(component_drivers));
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,bcm2835-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 int __init vc4_drm_register(void)
{
int i, ret;
for (i = 0; i < ARRAY_SIZE(component_drivers); i++) {
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@anholt.net>");
MODULE_LICENSE("GPL v2");
drivers/gpu/drm/vc4/vc4_drv.h 0 → 100644
View file @ 1f43710a
/*
* 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];
struct drm_fbdev_cma *fbdev;
};
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_plane {
struct drm_plane base;
};
static inline struct vc4_plane *
to_vc4_plane(struct drm_plane *plane)
{
return (struct vc4_plane *)plane;
}
enum vc4_encoder_type {
VC4_ENCODER_TYPE_HDMI,
VC4_ENCODER_TYPE_VEC,
VC4_ENCODER_TYPE_DSI0,
VC4_ENCODER_TYPE_DSI1,
VC4_ENCODER_TYPE_SMI,
VC4_ENCODER_TYPE_DPI,
};
struct vc4_encoder {
struct drm_encoder base;
enum vc4_encoder_type type;
u32 clock_select;
};
static inline struct vc4_encoder *
to_vc4_encoder(struct drm_encoder *encoder)
{
return container_of(encoder, struct vc4_encoder, base);
}
#define HVS_READ(offset) readl(vc4->hvs->regs + offset)
#define HVS_WRITE(offset, val) writel(val, vc4->hvs->regs + offset)
/**
* _wait_for - magic (register) wait macro
*
* Does the right thing for modeset paths when run under kdgb or similar atomic
* contexts. Note that it's important that we check the condition again after
* having timed out, since the timeout could be due to preemption or similar and
* we've never had a chance to check the condition before the timeout.
*/
#define _wait_for(COND, MS, W) ({ \
unsigned long timeout__ = jiffies + msecs_to_jiffies(MS) + 1; \
int ret__ = 0; \
while (!(COND)) { \
if (time_after(jiffies, timeout__)) { \
if (!(COND)) \
ret__ = -ETIMEDOUT; \
break; \
} \
if (W && drm_can_sleep()) { \
msleep(W); \
} else { \
cpu_relax(); \
} \
} \
ret__; \
})
#define wait_for(COND, MS) _wait_for(COND, MS, 1)
/* 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, unsigned int crtc_id);
void vc4_disable_vblank(struct drm_device *dev, unsigned 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;
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);
drivers/gpu/drm/vc4/vc4_hdmi.c 0 → 100644
View file @ 1f43710a
/*
* Copyright (C) 2015 Broadcom
* Copyright (c) 2014 The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* 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/>.
*/
/**
* DOC: VC4 Falcon HDMI module
*
* The HDMI core has a state machine and a PHY. Most of the unit
* operates off of the HSM clock from CPRMAN. It also internally uses
* the PLLH_PIX clock for the PHY.
*/
#include "drm_atomic_helper.h"
#include "drm_crtc_helper.h"
#include "drm_edid.h"
#include "linux/clk.h"
#include "linux/component.h"
#include "linux/i2c.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 drm_encoder *encoder;
struct drm_connector *connector;
struct i2c_adapter *ddc;
void __iomem *hdmicore_regs;
void __iomem *hd_regs;
int hpd_gpio;
struct clk *pixel_clock;
struct clk *hsm_clock;
};
#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 vc4_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.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;
}
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,
.best_encoder = vc4_hdmi_connector_best_encoder,
};
static 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_mode_connector_attach_encoder(connector, encoder);
return connector;
fail:
if (connector)
vc4_hdmi_connector_destroy(connector);
return ERR_PTR(ret);
}
static void vc4_hdmi_encoder_destroy(struct drm_encoder *encoder)
{
drm_encoder_cleanup(encoder);
}
static const struct drm_encoder_funcs vc4_hdmi_encoder_funcs = {
.destroy = vc4_hdmi_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_PHSYNC;
bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC;
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);
clk_set_rate(vc4->hdmi->pixel_clock, mode->clock * 1000);
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);
int ret;
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);
ret = wait_for(HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) &
VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE, 1);
WARN_ONCE(ret, "Timeout waiting for "
"VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE\n");
} 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);
ret = wait_for(!(HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) &
VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE), 1);
WARN_ONCE(ret, "Timeout waiting for "
"!VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE\n");
}
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);
ret = wait_for(HDMI_READ(VC4_HDMI_FIFO_CTL) &
VC4_HDMI_FIFO_CTL_RECENTER_DONE, 1);
WARN_ONCE(ret, "Timeout waiting for "
"VC4_HDMI_FIFO_CTL_RECENTER_DONE");
}
}
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 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 vc4_hdmi_encoder *vc4_hdmi_encoder;
struct device_node *ddc_node;
u32 value;
int ret;
hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
if (!hdmi)
return -ENOMEM;
vc4_hdmi_encoder = devm_kzalloc(dev, sizeof(*vc4_hdmi_encoder),
GFP_KERNEL);
if (!vc4_hdmi_encoder)
return -ENOMEM;
vc4_hdmi_encoder->base.type = VC4_ENCODER_TYPE_HDMI;
hdmi->encoder = &vc4_hdmi_encoder->base.base;
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_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->pixel_clock = devm_clk_get(dev, "pixel");
if (IS_ERR(hdmi->pixel_clock)) {
DRM_ERROR("Failed to get pixel clock\n");
return PTR_ERR(hdmi->pixel_clock);
}
hdmi->hsm_clock = devm_clk_get(dev, "hdmi");
if (IS_ERR(hdmi->hsm_clock)) {
DRM_ERROR("Failed to get HDMI state machine clock\n");
return PTR_ERR(hdmi->hsm_clock);
}
hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node);
if (!hdmi->ddc) {
DRM_DEBUG("Failed to get ddc i2c adapter by node\n");
return -EPROBE_DEFER;
}
/* Enable the clocks at startup. We can't quite recover from
* turning off the pixel clock during disable/enables yet, so
* it's always running.
*/
ret = clk_prepare_enable(hdmi->pixel_clock);
if (ret) {
DRM_ERROR("Failed to turn on pixel clock: %d\n", ret);
goto err_put_i2c;
}
ret = clk_prepare_enable(hdmi->hsm_clock);
if (ret) {
DRM_ERROR("Failed to turn on HDMI state machine clock: %d\n",
ret);
goto err_unprepare_pix;
}
/* 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-gpios", &value)) {
hdmi->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0);
if (hdmi->hpd_gpio < 0) {
ret = hdmi->hpd_gpio;
goto err_unprepare_hsm;
}
}
vc4->hdmi = hdmi;
/* HDMI core must be enabled. */
WARN_ON_ONCE((HD_READ(VC4_HD_M_CTL) & VC4_HD_M_ENABLE) == 0);
drm_encoder_init(drm, hdmi->encoder, &vc4_hdmi_encoder_funcs,
DRM_MODE_ENCODER_TMDS);
drm_encoder_helper_add(hdmi->encoder, &vc4_hdmi_encoder_helper_funcs);
hdmi->connector = vc4_hdmi_connector_init(drm, hdmi->encoder);
if (IS_ERR(hdmi->connector)) {
ret = PTR_ERR(hdmi->connector);
goto err_destroy_encoder;
}
return 0;
err_destroy_encoder:
vc4_hdmi_encoder_destroy(hdmi->encoder);
err_unprepare_hsm:
clk_disable_unprepare(hdmi->hsm_clock);
err_unprepare_pix:
clk_disable_unprepare(hdmi->pixel_clock);
err_put_i2c:
put_device(&vc4->hdmi->ddc->dev);
return ret;
}
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;
struct vc4_hdmi *hdmi = vc4->hdmi;
vc4_hdmi_connector_destroy(hdmi->connector);
vc4_hdmi_encoder_destroy(hdmi->encoder);
clk_disable_unprepare(hdmi->pixel_clock);
clk_disable_unprepare(hdmi->hsm_clock);
put_device(&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,bcm2835-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,
},
};
drivers/gpu/drm/vc4/vc4_hvs.c 0 → 100644
View file @ 1f43710a
/*
* 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). It operates at the system clock rate (the system audio
* clock gate, specifically), which is much higher than the pixel
* clock rate.
*
* 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,bcm2835-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,
},
};
drivers/gpu/drm/vc4/vc4_kms.c 0 → 100644
View file @ 1f43710a
/*
* 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 void vc4_output_poll_changed(struct drm_device *dev)
{
struct vc4_dev *vc4 = to_vc4_dev(dev);
if (vc4->fbdev)
drm_fbdev_cma_hotplug_event(vc4->fbdev);
}
static const struct drm_mode_config_funcs vc4_mode_funcs = {
.output_poll_changed = vc4_output_poll_changed,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
.fb_create = drm_fb_cma_create,
};
int vc4_kms_load(struct drm_device *dev)
{
struct vc4_dev *vc4 = to_vc4_dev(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;
dev->vblank_disable_allowed = true;
drm_mode_config_reset(dev);
vc4->fbdev = drm_fbdev_cma_init(dev, 32,
dev->mode_config.num_crtc,
dev->mode_config.num_connector);
if (IS_ERR(vc4->fbdev))
vc4->fbdev = NULL;
drm_kms_helper_poll_init(dev);
return 0;
}
drivers/gpu/drm/vc4/vc4_plane.c 0 → 100644
View file @ 1f43710a
/*
* 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);
}
drivers/gpu/drm/vc4/vc4_regs.h 0 → 100644
View file @ 1f43710a
/*
* 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.
*/
#ifndef VC4_REGS_H
#define VC4_REGS_H
#include <linux/bitops.h>
#define VC4_MASK(high, low) ((u32)GENMASK(high, 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 BIT(2)
# define V3D_L2CACTL_L2CDIS BIT(1)
# define V3D_L2CACTL_L2CENA BIT(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 BIT(3)
# define V3D_INT_OUTOMEM BIT(2)
# define V3D_INT_FLDONE BIT(1)
# define V3D_INT_FRDONE BIT(0)
#define V3D_CT0CS 0x00100
#define V3D_CT1CS 0x00104
#define V3D_CTNCS(n) (V3D_CT0CS + 4 * n)
# define V3D_CTRSTA BIT(15)
# define V3D_CTSEMA BIT(12)
# define V3D_CTRTSD BIT(8)
# define V3D_CTRUN BIT(5)
# define V3D_CTSUBS BIT(4)
# define V3D_CTERR BIT(3)
# define V3D_CTMODE BIT(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 BIT(8)
# define V3D_RMBUSY BIT(3)
# define V3D_RMACTIVE BIT(2)
# define V3D_BMBUSY BIT(1)
# define V3D_BMACTIVE BIT(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 BIT(14)
# define PV_CONTROL_TRIGGER_UNDERFLOW BIT(13)
# define PV_CONTROL_WAIT_HSTART BIT(12)
# define PV_CONTROL_CLK_SELECT_DSI_VEC 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 BIT(1)
# define PV_CONTROL_EN BIT(0)
#define PV_V_CONTROL 0x04
# define PV_VCONTROL_INTERLACE BIT(4)
# define PV_VCONTROL_CONTINUOUS BIT(1)
# define PV_VCONTROL_VIDEN BIT(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 BIT(9)
# define PV_INT_VFP_END BIT(8)
# define PV_INT_VFP_START BIT(7)
# define PV_INT_VACT_START BIT(6)
# define PV_INT_VBP_START BIT(5)
# define PV_INT_VSYNC_START BIT(4)
# define PV_INT_HFP_START BIT(3)
# define PV_INT_HACT_START BIT(2)
# define PV_INT_HBP_START BIT(1)
# define PV_INT_HSYNC_START BIT(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 BIT(31)
# define SCALER_DISPCTRL_DSP2EISLUR BIT(15)
# define SCALER_DISPCTRL_DSP1EISLUR BIT(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 BIT(13)
# define SCALER_DISPCTRL_DSP2EIEOLN BIT(12)
# define SCALER_DISPCTRL_DSP2EIEOF BIT(11)
# define SCALER_DISPCTRL_DSP1EIEOLN BIT(10)
# define SCALER_DISPCTRL_DSP1EIEOF BIT(9)
/* Enables Display 0 end-of-line-N contribution to
* SCALER_DISPSTAT_IRQDISP0
*/
# define SCALER_DISPCTRL_DSP0EIEOLN BIT(8)
/* Enables Display 0 EOF contribution to SCALER_DISPSTAT_IRQDISP0 */
# define SCALER_DISPCTRL_DSP0EIEOF BIT(7)
# define SCALER_DISPCTRL_SLVRDEIRQ BIT(6)
# define SCALER_DISPCTRL_SLVWREIRQ BIT(5)
# define SCALER_DISPCTRL_DMAEIRQ BIT(4)
# define SCALER_DISPCTRL_DISP2EIRQ BIT(3)
# define SCALER_DISPCTRL_DISP1EIRQ BIT(2)
/* Enables interrupt generation on the enabled EOF/EOLN/EISLUR
* bits and short frames..
*/
# define SCALER_DISPCTRL_DISP0EIRQ BIT(1)
/* Enables interrupt generation on scaler profiler interrupt. */
# define SCALER_DISPCTRL_SCLEIRQ BIT(0)
#define SCALER_DISPSTAT 0x00000004
# define SCALER_DISPSTAT_COBLOW2 BIT(29)
# define SCALER_DISPSTAT_EOLN2 BIT(28)
# define SCALER_DISPSTAT_ESFRAME2 BIT(27)
# define SCALER_DISPSTAT_ESLINE2 BIT(26)
# define SCALER_DISPSTAT_EUFLOW2 BIT(25)
# define SCALER_DISPSTAT_EOF2 BIT(24)
# define SCALER_DISPSTAT_COBLOW1 BIT(21)
# define SCALER_DISPSTAT_EOLN1 BIT(20)
# define SCALER_DISPSTAT_ESFRAME1 BIT(19)
# define SCALER_DISPSTAT_ESLINE1 BIT(18)
# define SCALER_DISPSTAT_EUFLOW1 BIT(17)
# define SCALER_DISPSTAT_EOF1 BIT(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 BIT(13)
/* Set when the DISPEOLN line is done compositing. */
# define SCALER_DISPSTAT_EOLN0 BIT(12)
/* Set when VSTART is seen but there are still pixels in the current
* output line.
*/
# define SCALER_DISPSTAT_ESFRAME0 BIT(11)
/* Set when HSTART is seen but there are still pixels in the current
* output line.
*/
# define SCALER_DISPSTAT_ESLINE0 BIT(10)
/* Set when the the downstream tries to read from the display FIFO
* while it's empty.
*/
# define SCALER_DISPSTAT_EUFLOW0 BIT(9)
/* Set when the display mode changes from RUN to EOF */
# define SCALER_DISPSTAT_EOF0 BIT(8)
/* Set on AXI invalid DMA ID error. */
# define SCALER_DISPSTAT_DMA_ERROR BIT(7)
/* Set on AXI slave read decode error */
# define SCALER_DISPSTAT_IRQSLVRD BIT(6)
/* Set on AXI slave write decode error */
# define SCALER_DISPSTAT_IRQSLVWR BIT(5)
/* Set when SCALER_DISPSTAT_DMA_ERROR is set, or
* SCALER_DISPSTAT_RESP_ERROR is not SCALER_DISPSTAT_RESP_OKAY.
*/
# define SCALER_DISPSTAT_IRQDMA BIT(4)
# define SCALER_DISPSTAT_IRQDISP2 BIT(3)
# define SCALER_DISPSTAT_IRQDISP1 BIT(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 BIT(1)
/* On read, the profiler interrupt. On write, clear *all* interrupt bits. */
# define SCALER_DISPSTAT_IRQSCL BIT(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 BIT(31)
# define SCALER_DISPCTRLX_RESET BIT(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 BIT(29)
# define SCALER_DISPSTATX_EMPTY BIT(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 BIT(1)
# define VC4_HDMI_SW_RESET_HDMI BIT(0)
#define VC4_HDMI_HOTPLUG_INT 0x008
#define VC4_HDMI_HOTPLUG 0x00c
# define VC4_HDMI_HOTPLUG_CONNECTED BIT(0)
#define VC4_HDMI_RAM_PACKET_CONFIG 0x0a0
# define VC4_HDMI_RAM_PACKET_ENABLE BIT(16)
#define VC4_HDMI_HORZA 0x0c4
# define VC4_HDMI_HORZA_VPOS BIT(14)
# define VC4_HDMI_HORZA_HPOS BIT(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 BIT(14)
# define VC4_HDMI_FIFO_CTL_USE_EMPTY BIT(13)
# define VC4_HDMI_FIFO_CTL_ON_VB BIT(7)
# define VC4_HDMI_FIFO_CTL_RECENTER BIT(6)
# define VC4_HDMI_FIFO_CTL_FIFO_RESET BIT(5)
# define VC4_HDMI_FIFO_CTL_USE_PLL_LOCK BIT(4)
# define VC4_HDMI_FIFO_CTL_INV_CLK_XFR BIT(3)
# define VC4_HDMI_FIFO_CTL_CAPTURE_PTR BIT(2)
# define VC4_HDMI_FIFO_CTL_USE_FULL BIT(1)
# define VC4_HDMI_FIFO_CTL_MASTER_SLAVE_N BIT(0)
# define VC4_HDMI_FIFO_VALID_WRITE_MASK 0xefff
#define VC4_HDMI_SCHEDULER_CONTROL 0x0c0
# define VC4_HDMI_SCHEDULER_CONTROL_MANUAL_FORMAT BIT(15)
# define VC4_HDMI_SCHEDULER_CONTROL_IGNORE_VSYNC_PREDICTS BIT(5)
# define VC4_HDMI_SCHEDULER_CONTROL_VERT_ALWAYS_KEEPOUT BIT(3)
# define VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE BIT(1)
# define VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI BIT(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 BIT(2)
# define VC4_HD_M_ENABLE BIT(0)
#define VC4_HD_MAI_CTL 0x014
#define VC4_HD_VID_CTL 0x038
# define VC4_HD_VID_CTL_ENABLE BIT(31)
# define VC4_HD_VID_CTL_UNDERFLOW_ENABLE BIT(30)
# define VC4_HD_VID_CTL_FRAME_COUNTER_RESET BIT(29)
# define VC4_HD_VID_CTL_VSYNC_LOW BIT(28)
# define VC4_HD_VID_CTL_HSYNC_LOW BIT(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 BIT(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 BIT(1)
# define VC4_HD_CSC_CTL_ENABLE BIT(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 BIT(31)
#define SCALER_CTL0_VALID BIT(30)
#define SCALER_CTL0_SIZE_MASK VC4_MASK(29, 24)
#define SCALER_CTL0_SIZE_SHIFT 24
#define SCALER_CTL0_HFLIP BIT(16)
#define SCALER_CTL0_VFLIP BIT(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 BIT(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
#endif /* VC4_REGS_H */
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