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drm/sun4i: abstract a engine type

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As we are going to add support for the Allwinner DE2 engine in sun4i-drm
driver, we will finally have two types of display engines -- the DE1
backend and the DE2 mixer. They both do some display blending and feed
graphics data to TCON, and is part of the "Display Engine" called by
Allwinner, so I choose to call them both "engine" here.

Abstract the engine type to a new struct with an ops struct, which contains
functions that should be called outside the engine-specified code (in
TCON, CRTC or TV Encoder code).

In order to preserve bisectability, we also switch the backend and layer
code in its own module.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit is contained in:
Icenowy Zheng 2017-05-17 22:47:17 +08:00 committed by Maxime Ripard
parent 7921e1477a
commit 8796933843
12 changed files with 192 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/sun4i/Makefile
View File

@ -5,9 +5,10 @@ sun4i-tcon-y += sun4i_tcon.o
sun4i-tcon-y += sun4i_rgb.o
sun4i-tcon-y += sun4i_dotclock.o
sun4i-tcon-y += sun4i_crtc.o
sun4i-tcon-y += sun4i_layer.o
sun4i-backend-y += sun4i_backend.o sun4i_layer.o
obj-$(CONFIG_DRM_SUN4I) += sun4i-drm.o sun4i-tcon.o
obj-$(CONFIG_DRM_SUN4I) += sun4i_backend.o
obj-$(CONFIG_DRM_SUN4I) += sun4i-backend.o
obj-$(CONFIG_DRM_SUN4I) += sun6i_drc.o
obj-$(CONFIG_DRM_SUN4I) += sun4i_tv.o

78
drivers/gpu/drm/sun4i/sun4i_backend.c
View File

@ -25,6 +25,8 @@
#include "sun4i_backend.h"
#include "sun4i_drv.h"
#include "sun4i_layer.h"
#include "sunxi_engine.h"
static const u32 sunxi_rgb2yuv_coef[12] = {
0x00000107, 0x00000204, 0x00000064, 0x00000108,
@ -32,41 +34,38 @@ static const u32 sunxi_rgb2yuv_coef[12] = {
0x000001c1, 0x00003e88, 0x00003fb8, 0x00000808
};
void sun4i_backend_apply_color_correction(struct sun4i_backend *backend)
static void sun4i_backend_apply_color_correction(struct sunxi_engine *engine)
{
int i;
DRM_DEBUG_DRIVER("Applying RGB to YUV color correction\n");
/* Set color correction */
regmap_write(backend->regs, SUN4I_BACKEND_OCCTL_REG,
regmap_write(engine->regs, SUN4I_BACKEND_OCCTL_REG,
SUN4I_BACKEND_OCCTL_ENABLE);
for (i = 0; i < 12; i++)
regmap_write(backend->regs, SUN4I_BACKEND_OCRCOEF_REG(i),
regmap_write(engine->regs, SUN4I_BACKEND_OCRCOEF_REG(i),
sunxi_rgb2yuv_coef[i]);
}
EXPORT_SYMBOL(sun4i_backend_apply_color_correction);
void sun4i_backend_disable_color_correction(struct sun4i_backend *backend)
static void sun4i_backend_disable_color_correction(struct sunxi_engine *engine)
{
DRM_DEBUG_DRIVER("Disabling color correction\n");
/* Disable color correction */
regmap_update_bits(backend->regs, SUN4I_BACKEND_OCCTL_REG,
regmap_update_bits(engine->regs, SUN4I_BACKEND_OCCTL_REG,
SUN4I_BACKEND_OCCTL_ENABLE, 0);
}
EXPORT_SYMBOL(sun4i_backend_disable_color_correction);
void sun4i_backend_commit(struct sun4i_backend *backend)
static void sun4i_backend_commit(struct sunxi_engine *engine)
{
DRM_DEBUG_DRIVER("Committing changes\n");
regmap_write(backend->regs, SUN4I_BACKEND_REGBUFFCTL_REG,
regmap_write(engine->regs, SUN4I_BACKEND_REGBUFFCTL_REG,
SUN4I_BACKEND_REGBUFFCTL_AUTOLOAD_DIS |
SUN4I_BACKEND_REGBUFFCTL_LOADCTL);
}
EXPORT_SYMBOL(sun4i_backend_commit);
void sun4i_backend_layer_enable(struct sun4i_backend *backend,
int layer, bool enable)
@ -81,10 +80,9 @@ void sun4i_backend_layer_enable(struct sun4i_backend *backend,
else
val = 0;
regmap_update_bits(backend->regs, SUN4I_BACKEND_MODCTL_REG,
regmap_update_bits(backend->engine.regs, SUN4I_BACKEND_MODCTL_REG,
SUN4I_BACKEND_MODCTL_LAY_EN(layer), val);
}
EXPORT_SYMBOL(sun4i_backend_layer_enable);
static int sun4i_backend_drm_format_to_layer(struct drm_plane *plane,
u32 format, u32 *mode)
@ -144,33 +142,33 @@ int sun4i_backend_update_layer_coord(struct sun4i_backend *backend,
if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
DRM_DEBUG_DRIVER("Primary layer, updating global size W: %u H: %u\n",
state->crtc_w, state->crtc_h);
regmap_write(backend->regs, SUN4I_BACKEND_DISSIZE_REG,
regmap_write(backend->engine.regs, SUN4I_BACKEND_DISSIZE_REG,
SUN4I_BACKEND_DISSIZE(state->crtc_w,
state->crtc_h));
}
/* Set the line width */
DRM_DEBUG_DRIVER("Layer line width: %d bits\n", fb->pitches[0] * 8);
regmap_write(backend->regs, SUN4I_BACKEND_LAYLINEWIDTH_REG(layer),
regmap_write(backend->engine.regs,
SUN4I_BACKEND_LAYLINEWIDTH_REG(layer),
fb->pitches[0] * 8);
/* Set height and width */
DRM_DEBUG_DRIVER("Layer size W: %u H: %u\n",
state->crtc_w, state->crtc_h);
regmap_write(backend->regs, SUN4I_BACKEND_LAYSIZE_REG(layer),
regmap_write(backend->engine.regs, SUN4I_BACKEND_LAYSIZE_REG(layer),
SUN4I_BACKEND_LAYSIZE(state->crtc_w,
state->crtc_h));
/* Set base coordinates */
DRM_DEBUG_DRIVER("Layer coordinates X: %d Y: %d\n",
state->crtc_x, state->crtc_y);
regmap_write(backend->regs, SUN4I_BACKEND_LAYCOOR_REG(layer),
regmap_write(backend->engine.regs, SUN4I_BACKEND_LAYCOOR_REG(layer),
SUN4I_BACKEND_LAYCOOR(state->crtc_x,
state->crtc_y));
return 0;
}
EXPORT_SYMBOL(sun4i_backend_update_layer_coord);
int sun4i_backend_update_layer_formats(struct sun4i_backend *backend,
int layer, struct drm_plane *plane)
@ -185,7 +183,7 @@ int sun4i_backend_update_layer_formats(struct sun4i_backend *backend,
interlaced = plane->state->crtc->state->adjusted_mode.flags
& DRM_MODE_FLAG_INTERLACE;
regmap_update_bits(backend->regs, SUN4I_BACKEND_MODCTL_REG,
regmap_update_bits(backend->engine.regs, SUN4I_BACKEND_MODCTL_REG,
SUN4I_BACKEND_MODCTL_ITLMOD_EN,
interlaced ? SUN4I_BACKEND_MODCTL_ITLMOD_EN : 0);
@ -199,12 +197,12 @@ int sun4i_backend_update_layer_formats(struct sun4i_backend *backend,
return ret;
}
regmap_update_bits(backend->regs, SUN4I_BACKEND_ATTCTL_REG1(layer),
regmap_update_bits(backend->engine.regs,
SUN4I_BACKEND_ATTCTL_REG1(layer),
SUN4I_BACKEND_ATTCTL_REG1_LAY_FBFMT, val);
return 0;
}
EXPORT_SYMBOL(sun4i_backend_update_layer_formats);
int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
int layer, struct drm_plane *plane)
@ -232,19 +230,19 @@ int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
/* Write the 32 lower bits of the address (in bits) */
lo_paddr = paddr << 3;
DRM_DEBUG_DRIVER("Setting address lower bits to 0x%x\n", lo_paddr);
regmap_write(backend->regs, SUN4I_BACKEND_LAYFB_L32ADD_REG(layer),
regmap_write(backend->engine.regs,
SUN4I_BACKEND_LAYFB_L32ADD_REG(layer),
lo_paddr);
/* And the upper bits */
hi_paddr = paddr >> 29;
DRM_DEBUG_DRIVER("Setting address high bits to 0x%x\n", hi_paddr);
regmap_update_bits(backend->regs, SUN4I_BACKEND_LAYFB_H4ADD_REG,
regmap_update_bits(backend->engine.regs, SUN4I_BACKEND_LAYFB_H4ADD_REG,
SUN4I_BACKEND_LAYFB_H4ADD_MSK(layer),
SUN4I_BACKEND_LAYFB_H4ADD(layer, hi_paddr));
return 0;
}
EXPORT_SYMBOL(sun4i_backend_update_layer_buffer);
static int sun4i_backend_init_sat(struct device *dev) {
struct sun4i_backend *backend = dev_get_drvdata(dev);
@ -330,6 +328,13 @@ static int sun4i_backend_of_get_id(struct device_node *node)
return ret;
}
static const struct sunxi_engine_ops sun4i_backend_engine_ops = {
.commit = sun4i_backend_commit,
.layers_init = sun4i_layers_init,
.apply_color_correction = sun4i_backend_apply_color_correction,
.disable_color_correction = sun4i_backend_disable_color_correction,
};
static struct regmap_config sun4i_backend_regmap_config = {
.reg_bits = 32,
.val_bits = 32,
@ -353,21 +358,22 @@ static int sun4i_backend_bind(struct device *dev, struct device *master,
return -ENOMEM;
dev_set_drvdata(dev, backend);
backend->node = dev->of_node;
backend->id = sun4i_backend_of_get_id(dev->of_node);
if (backend->id < 0)
return backend->id;
backend->engine.node = dev->of_node;
backend->engine.ops = &sun4i_backend_engine_ops;
backend->engine.id = sun4i_backend_of_get_id(dev->of_node);
if (backend->engine.id < 0)
return backend->engine.id;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(dev, res);
if (IS_ERR(regs))
return PTR_ERR(regs);
backend->regs = devm_regmap_init_mmio(dev, regs,
&sun4i_backend_regmap_config);
if (IS_ERR(backend->regs)) {
backend->engine.regs = devm_regmap_init_mmio(dev, regs,
&sun4i_backend_regmap_config);
if (IS_ERR(backend->engine.regs)) {
dev_err(dev, "Couldn't create the backend regmap\n");
return PTR_ERR(backend->regs);
return PTR_ERR(backend->engine.regs);
}
backend->reset = devm_reset_control_get(dev, NULL);
@ -415,18 +421,18 @@ static int sun4i_backend_bind(struct device *dev, struct device *master,
}
}
list_add_tail(&backend->list, &drv->backend_list);
list_add_tail(&backend->engine.list, &drv->engine_list);
/* Reset the registers */
for (i = 0x800; i < 0x1000; i += 4)
regmap_write(backend->regs, i, 0);
regmap_write(backend->engine.regs, i, 0);
/* Disable registers autoloading */
regmap_write(backend->regs, SUN4I_BACKEND_REGBUFFCTL_REG,
regmap_write(backend->engine.regs, SUN4I_BACKEND_REGBUFFCTL_REG,
SUN4I_BACKEND_REGBUFFCTL_AUTOLOAD_DIS);
/* Enable the backend */
regmap_write(backend->regs, SUN4I_BACKEND_MODCTL_REG,
regmap_write(backend->engine.regs, SUN4I_BACKEND_MODCTL_REG,
SUN4I_BACKEND_MODCTL_DEBE_EN |
SUN4I_BACKEND_MODCTL_START_CTL);
@ -448,7 +454,7 @@ static void sun4i_backend_unbind(struct device *dev, struct device *master,
{
struct sun4i_backend *backend = dev_get_drvdata(dev);
list_del(&backend->list);
list_del(&backend->engine.list);
if (of_device_is_compatible(dev->of_node,
"allwinner,sun8i-a33-display-backend"))

19
drivers/gpu/drm/sun4i/sun4i_backend.h
View File

@ -19,6 +19,8 @@
#include <linux/regmap.h>
#include <linux/reset.h>
#include "sunxi_engine.h"
#define SUN4I_BACKEND_MODCTL_REG 0x800
#define SUN4I_BACKEND_MODCTL_LINE_SEL BIT(29)
#define SUN4I_BACKEND_MODCTL_ITLMOD_EN BIT(28)
@ -141,8 +143,7 @@
#define SUN4I_BACKEND_PIPE_OFF(p) (0x5000 + (0x400 * (p)))
struct sun4i_backend {
struct device_node *node;
struct regmap *regs;
struct sunxi_engine engine;
struct reset_control *reset;
@ -152,17 +153,13 @@ struct sun4i_backend {
struct clk *sat_clk;
struct reset_control *sat_reset;
int id;
/* Backend list management */
struct list_head list;
};
void sun4i_backend_apply_color_correction(struct sun4i_backend *backend);
void sun4i_backend_disable_color_correction(struct sun4i_backend *backend);
void sun4i_backend_commit(struct sun4i_backend *backend);
static inline struct sun4i_backend *
engine_to_sun4i_backend(struct sunxi_engine *engine)
{
return container_of(engine, struct sun4i_backend, engine);
}
void sun4i_backend_layer_enable(struct sun4i_backend *backend,
int layer, bool enable);

11
drivers/gpu/drm/sun4i/sun4i_crtc.c
View File

@ -25,10 +25,9 @@
#include <video/videomode.h>
#include "sun4i_backend.h"
#include "sun4i_crtc.h"
#include "sun4i_drv.h"
#include "sun4i_layer.h"
#include "sunxi_engine.h"
#include "sun4i_tcon.h"
static void sun4i_crtc_atomic_begin(struct drm_crtc *crtc,
@ -56,7 +55,7 @@ static void sun4i_crtc_atomic_flush(struct drm_crtc *crtc,
DRM_DEBUG_DRIVER("Committing plane changes\n");
sun4i_backend_commit(scrtc->backend);
sunxi_engine_commit(scrtc->engine);
if (event) {
crtc->state->event = NULL;
@ -135,7 +134,7 @@ static const struct drm_crtc_funcs sun4i_crtc_funcs = {
};
struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
struct sun4i_backend *backend,
struct sunxi_engine *engine,
struct sun4i_tcon *tcon)
{
struct sun4i_crtc *scrtc;
@ -146,11 +145,11 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
scrtc = devm_kzalloc(drm->dev, sizeof(*scrtc), GFP_KERNEL);
if (!scrtc)
return ERR_PTR(-ENOMEM);
scrtc->backend = backend;
scrtc->engine = engine;
scrtc->tcon = tcon;
/* Create our layers */
planes = sun4i_layers_init(drm, scrtc);
planes = sunxi_engine_layers_init(drm, engine);
if (IS_ERR(planes)) {
dev_err(drm->dev, "Couldn't create the planes\n");
return NULL;

4
drivers/gpu/drm/sun4i/sun4i_crtc.h
View File

@ -17,7 +17,7 @@ struct sun4i_crtc {
struct drm_crtc crtc;
struct drm_pending_vblank_event *event;
struct sun4i_backend *backend;
struct sunxi_engine *engine;
struct sun4i_tcon *tcon;
};
@ -27,7 +27,7 @@ static inline struct sun4i_crtc *drm_crtc_to_sun4i_crtc(struct drm_crtc *crtc)
}
struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
struct sun4i_backend *backend,
struct sunxi_engine *engine,
struct sun4i_tcon *tcon);
#endif /* _SUN4I_CRTC_H_ */

2
drivers/gpu/drm/sun4i/sun4i_drv.c
View File

@ -91,7 +91,7 @@ static int sun4i_drv_bind(struct device *dev)
goto free_drm;
}
drm->dev_private = drv;
INIT_LIST_HEAD(&drv->backend_list);
INIT_LIST_HEAD(&drv->engine_list);
INIT_LIST_HEAD(&drv->tcon_list);
ret = of_reserved_mem_device_init(dev);

2
drivers/gpu/drm/sun4i/sun4i_drv.h
View File

@ -18,7 +18,7 @@
#include <linux/regmap.h>
struct sun4i_drv {
struct list_head backend_list;
struct list_head engine_list;
struct list_head tcon_list;
struct drm_fbdev_cma *fbdev;

9
drivers/gpu/drm/sun4i/sun4i_layer.c
View File

@ -11,13 +11,12 @@
*/
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_plane_helper.h>
#include <drm/drmP.h>
#include "sun4i_backend.h"
#include "sun4i_crtc.h"
#include "sun4i_layer.h"
#include "sunxi_engine.h"
struct sun4i_plane_desc {
enum drm_plane_type type;
@ -130,10 +129,10 @@ static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
}
struct drm_plane **sun4i_layers_init(struct drm_device *drm,
struct sun4i_crtc *crtc)
struct sunxi_engine *engine)
{
struct drm_plane **planes;
struct sun4i_backend *backend = crtc->backend;
struct sun4i_backend *backend = engine_to_sun4i_backend(engine);
int i;
planes = devm_kcalloc(drm->dev, ARRAY_SIZE(sun4i_backend_planes) + 1,
@ -175,7 +174,7 @@ struct drm_plane **sun4i_layers_init(struct drm_device *drm,
DRM_DEBUG_DRIVER("Assigning %s plane to pipe %d\n",
i ? "overlay" : "primary", plane->pipe);
regmap_update_bits(backend->regs, SUN4I_BACKEND_ATTCTL_REG0(i),
regmap_update_bits(engine->regs, SUN4I_BACKEND_ATTCTL_REG0(i),
SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL_MASK,
SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL(plane->pipe));

4
drivers/gpu/drm/sun4i/sun4i_layer.h
View File

@ -13,6 +13,8 @@
#ifndef _SUN4I_LAYER_H_
#define _SUN4I_LAYER_H_
struct sunxi_engine;
struct sun4i_layer {
struct drm_plane plane;
struct sun4i_drv *drv;
@ -27,6 +29,6 @@ plane_to_sun4i_layer(struct drm_plane *plane)
}
struct drm_plane **sun4i_layers_init(struct drm_device *drm,
struct sun4i_crtc *crtc);
struct sunxi_engine *engine);
#endif /* _SUN4I_LAYER_H_ */

38
drivers/gpu/drm/sun4i/sun4i_tcon.c
View File

@ -25,12 +25,12 @@
#include <linux/regmap.h>
#include <linux/reset.h>
#include "sun4i_backend.h"
#include "sun4i_crtc.h"
#include "sun4i_dotclock.h"
#include "sun4i_drv.h"
#include "sun4i_rgb.h"
#include "sun4i_tcon.h"
#include "sunxi_engine.h"
void sun4i_tcon_disable(struct sun4i_tcon *tcon)
{
@ -419,12 +419,16 @@ static int sun4i_tcon_init_regmap(struct device *dev,
* means maintaining a large list of them. Or, since the backend is
* registered and binded before the TCON, we can just go through the
* list of registered backends and compare the device node.
*
* As the structures now store engines instead of backends, here this
* function in fact searches the corresponding engine, and the ID is
* requested via the get_id function of the engine.
*/
static struct sun4i_backend *sun4i_tcon_find_backend(struct sun4i_drv *drv,
struct device_node *node)
static struct sunxi_engine *sun4i_tcon_find_engine(struct sun4i_drv *drv,
struct device_node *node)
{
struct device_node *port, *ep, *remote;
struct sun4i_backend *backend;
struct sunxi_engine *engine;
port = of_graph_get_port_by_id(node, 0);
if (!port)
@ -435,21 +439,21 @@ static struct sun4i_backend *sun4i_tcon_find_backend(struct sun4i_drv *drv,
if (!remote)
continue;
/* does this node match any registered backends? */
list_for_each_entry(backend, &drv->backend_list, list) {
if (remote == backend->node) {
/* does this node match any registered engines? */
list_for_each_entry(engine, &drv->engine_list, list) {
if (remote == engine->node) {
of_node_put(remote);
of_node_put(port);
return backend;
return engine;
}
}
/* keep looking through upstream ports */
backend = sun4i_tcon_find_backend(drv, remote);
if (!IS_ERR(backend)) {
engine = sun4i_tcon_find_engine(drv, remote);
if (!IS_ERR(engine)) {
of_node_put(remote);
of_node_put(port);
return backend;
return engine;
}
}
@ -461,13 +465,13 @@ static int sun4i_tcon_bind(struct device *dev, struct device *master,
{
struct drm_device *drm = data;
struct sun4i_drv *drv = drm->dev_private;
struct sun4i_backend *backend;
struct sunxi_engine *engine;
struct sun4i_tcon *tcon;
int ret;
backend = sun4i_tcon_find_backend(drv, dev->of_node);
if (IS_ERR(backend)) {
dev_err(dev, "Couldn't find matching backend\n");
engine = sun4i_tcon_find_engine(drv, dev->of_node);
if (IS_ERR(engine)) {
dev_err(dev, "Couldn't find matching engine\n");
return -EPROBE_DEFER;
}
@ -477,7 +481,7 @@ static int sun4i_tcon_bind(struct device *dev, struct device *master,
dev_set_drvdata(dev, tcon);
tcon->drm = drm;
tcon->dev = dev;
tcon->id = backend->id;
tcon->id = engine->id;
tcon->quirks = of_device_get_match_data(dev);
tcon->lcd_rst = devm_reset_control_get(dev, "lcd");
@ -520,7 +524,7 @@ static int sun4i_tcon_bind(struct device *dev, struct device *master,
goto err_free_dotclock;
}
tcon->crtc = sun4i_crtc_init(drm, backend, tcon);
tcon->crtc = sun4i_crtc_init(drm, engine, tcon);
if (IS_ERR(tcon->crtc)) {
dev_err(dev, "Couldn't create our CRTC\n");
ret = PTR_ERR(tcon->crtc);

9
drivers/gpu/drm/sun4i/sun4i_tv.c
View File

@ -22,10 +22,10 @@
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
#include "sun4i_backend.h"
#include "sun4i_crtc.h"
#include "sun4i_drv.h"
#include "sun4i_tcon.h"
#include "sunxi_engine.h"
#define SUN4I_TVE_EN_REG 0x000
#define SUN4I_TVE_EN_DAC_MAP_MASK GENMASK(19, 4)
@ -353,7 +353,6 @@ static void sun4i_tv_disable(struct drm_encoder *encoder)
struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
struct sun4i_crtc *crtc = drm_crtc_to_sun4i_crtc(encoder->crtc);
struct sun4i_tcon *tcon = crtc->tcon;
struct sun4i_backend *backend = crtc->backend;
DRM_DEBUG_DRIVER("Disabling the TV Output\n");
@ -362,7 +361,8 @@ static void sun4i_tv_disable(struct drm_encoder *encoder)
regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
SUN4I_TVE_EN_ENABLE,
0);
sun4i_backend_disable_color_correction(backend);
sunxi_engine_disable_color_correction(crtc->engine);
}
static void sun4i_tv_enable(struct drm_encoder *encoder)
@ -370,11 +370,10 @@ static void sun4i_tv_enable(struct drm_encoder *encoder)
struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
struct sun4i_crtc *crtc = drm_crtc_to_sun4i_crtc(encoder->crtc);
struct sun4i_tcon *tcon = crtc->tcon;
struct sun4i_backend *backend = crtc->backend;
DRM_DEBUG_DRIVER("Enabling the TV Output\n");
sun4i_backend_apply_color_correction(backend);
sunxi_engine_apply_color_correction(crtc->engine);
regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
SUN4I_TVE_EN_ENABLE,

98
drivers/gpu/drm/sun4i/sunxi_engine.h Normal file
View File

@ -0,0 +1,98 @@
/*
* Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*/
#ifndef _SUNXI_ENGINE_H_
#define _SUNXI_ENGINE_H_
struct drm_plane;
struct drm_device;
struct sunxi_engine;
struct sunxi_engine_ops {
void (*commit)(struct sunxi_engine *engine);
struct drm_plane **(*layers_init)(struct drm_device *drm,
struct sunxi_engine *engine);
void (*apply_color_correction)(struct sunxi_engine *engine);
void (*disable_color_correction)(struct sunxi_engine *engine);
};
/**
* struct sunxi_engine - the common parts of an engine for sun4i-drm driver
* @ops: the operations of the engine
* @node: the of device node of the engine
* @regs: the regmap of the engine
* @id: the id of the engine (-1 if not used)
*/
struct sunxi_engine {
const struct sunxi_engine_ops *ops;
struct device_node *node;
struct regmap *regs;
int id;
/* Engine list management */
struct list_head list;
};
/**
* sunxi_engine_commit() - commit all changes of the engine
* @engine: pointer to the engine
*/
static inline void
sunxi_engine_commit(struct sunxi_engine *engine)
{
if (engine->ops && engine->ops->commit)
engine->ops->commit(engine);
}
/**
* sunxi_engine_layers_init() - Create planes (layers) for the engine
* @drm: pointer to the drm_device for which planes will be created
* @engine: pointer to the engine
*/
static inline struct drm_plane **
sunxi_engine_layers_init(struct drm_device *drm, struct sunxi_engine *engine)
{
if (engine->ops && engine->ops->layers_init)
return engine->ops->layers_init(drm, engine);
return ERR_PTR(-ENOSYS);
}
/**
* sunxi_engine_apply_color_correction - Apply the RGB2YUV color correction
* @engine: pointer to the engine
*
* This functionality is optional for an engine, however, if the engine is
* intended to be used with TV Encoder, the output will be incorrect
* without the color correction, due to TV Encoder expects the engine to
* output directly YUV signal.
*/
static inline void
sunxi_engine_apply_color_correction(struct sunxi_engine *engine)
{
if (engine->ops && engine->ops->apply_color_correction)
engine->ops->apply_color_correction(engine);
}
/**
* sunxi_engine_disable_color_correction - Disable the color space correction
* @engine: pointer to the engine
*
* This function is paired with apply_color_correction().
*/
static inline void
sunxi_engine_disable_color_correction(struct sunxi_engine *engine)
{
if (engine->ops && engine->ops->disable_color_correction)
engine->ops->disable_color_correction(engine);
}
#endif /* _SUNXI_ENGINE_H_ */