* [PATCH v4 1/3] drm: zte: make zx_plane accessible from zx_vou driver
2017-01-09 14:35 [PATCH v4 0/3] Add overlay plane support for ZTE drm driver Shawn Guo
@ 2017-01-09 14:35 ` Shawn Guo
2017-01-09 14:35 ` [PATCH v4 2/3] drm: zte: add .atomic_disable hook to disable graphic layer Shawn Guo
2017-01-09 14:35 ` [PATCH v4 3/3] drm: zte: add overlay plane support Shawn Guo
2 siblings, 0 replies; 6+ messages in thread
From: Shawn Guo @ 2017-01-09 14:35 UTC (permalink / raw)
To: linux-arm-kernel
From: Shawn Guo <shawn.guo@linaro.org>
Move struct zx_plane from zx_plane.c to zx_plane.h, so that it can be
accessed from zx_vou driver, and we can save the use of struct
zx_layer_data completely. More importantly, those additional data used
by VOU controller to enable/disable graphic and video layers can later
be added and accessed much more easily from zx_vou driver.
While at it, we make two changes to zx_plane_init() interface:
- Encode struct device pointer in zx_plane, so that we do not need to
pass it as a parameter.
- Change return of zx_plane_init() from struct drm_plane pointer to
error code, since we can get the pointer from zx_plane in zx_vou
driver now.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
---
drivers/gpu/drm/zte/zx_plane.c | 36 +++++++-----------------------------
drivers/gpu/drm/zte/zx_plane.h | 11 +++++++----
drivers/gpu/drm/zte/zx_vou.c | 31 +++++++++++++++++++------------
3 files changed, 33 insertions(+), 45 deletions(-)
diff --git a/drivers/gpu/drm/zte/zx_plane.c b/drivers/gpu/drm/zte/zx_plane.c
index 546eb92a94e8..78d29b1db91c 100644
--- a/drivers/gpu/drm/zte/zx_plane.c
+++ b/drivers/gpu/drm/zte/zx_plane.c
@@ -21,16 +21,6 @@
#include "zx_plane_regs.h"
#include "zx_vou.h"
-struct zx_plane {
- struct drm_plane plane;
- void __iomem *layer;
- void __iomem *csc;
- void __iomem *hbsc;
- void __iomem *rsz;
-};
-
-#define to_zx_plane(plane) container_of(plane, struct zx_plane, plane)
-
static const uint32_t gl_formats[] = {
DRM_FORMAT_ARGB8888,
DRM_FORMAT_XRGB8888,
@@ -248,28 +238,16 @@ static void zx_plane_hbsc_init(struct zx_plane *zplane)
zx_writel(hbsc + HBSC_THRESHOLD_COL3, (0x3c0 << 16) | 0x40);
}
-struct drm_plane *zx_plane_init(struct drm_device *drm, struct device *dev,
- struct zx_layer_data *data,
- enum drm_plane_type type)
+int zx_plane_init(struct drm_device *drm, struct zx_plane *zplane,
+ enum drm_plane_type type)
{
const struct drm_plane_helper_funcs *helper;
- struct zx_plane *zplane;
- struct drm_plane *plane;
+ struct drm_plane *plane = &zplane->plane;
+ struct device *dev = zplane->dev;
const uint32_t *formats;
unsigned int format_count;
int ret;
- zplane = devm_kzalloc(dev, sizeof(*zplane), GFP_KERNEL);
- if (!zplane)
- return ERR_PTR(-ENOMEM);
-
- plane = &zplane->plane;
-
- zplane->layer = data->layer;
- zplane->hbsc = data->hbsc;
- zplane->csc = data->csc;
- zplane->rsz = data->rsz;
-
zx_plane_hbsc_init(zplane);
switch (type) {
@@ -282,7 +260,7 @@ struct drm_plane *zx_plane_init(struct drm_device *drm, struct device *dev,
/* TODO: add video layer (vl) support */
break;
default:
- return ERR_PTR(-ENODEV);
+ return -ENODEV;
}
ret = drm_universal_plane_init(drm, plane, VOU_CRTC_MASK,
@@ -290,10 +268,10 @@ struct drm_plane *zx_plane_init(struct drm_device *drm, struct device *dev,
type, NULL);
if (ret) {
DRM_DEV_ERROR(dev, "failed to init universal plane: %d\n", ret);
- return ERR_PTR(ret);
+ return ret;
}
drm_plane_helper_add(plane, helper);
- return plane;
+ return 0;
}
diff --git a/drivers/gpu/drm/zte/zx_plane.h b/drivers/gpu/drm/zte/zx_plane.h
index 2b82cd558d9d..264a92e0b532 100644
--- a/drivers/gpu/drm/zte/zx_plane.h
+++ b/drivers/gpu/drm/zte/zx_plane.h
@@ -11,16 +11,19 @@
#ifndef __ZX_PLANE_H__
#define __ZX_PLANE_H__
-struct zx_layer_data {
+struct zx_plane {
+ struct drm_plane plane;
+ struct device *dev;
void __iomem *layer;
void __iomem *csc;
void __iomem *hbsc;
void __iomem *rsz;
};
-struct drm_plane *zx_plane_init(struct drm_device *drm, struct device *dev,
- struct zx_layer_data *data,
- enum drm_plane_type type);
+#define to_zx_plane(plane) container_of(plane, struct zx_plane, plane)
+
+int zx_plane_init(struct drm_device *drm, struct zx_plane *zplane,
+ enum drm_plane_type type);
void zx_plane_set_update(struct drm_plane *plane);
#endif /* __ZX_PLANE_H__ */
diff --git a/drivers/gpu/drm/zte/zx_vou.c b/drivers/gpu/drm/zte/zx_vou.c
index 73fe15c17c32..d5c801f6f97b 100644
--- a/drivers/gpu/drm/zte/zx_vou.c
+++ b/drivers/gpu/drm/zte/zx_vou.c
@@ -294,7 +294,7 @@ static int zx_crtc_init(struct drm_device *drm, struct zx_vou_hw *vou,
enum vou_chn_type chn_type)
{
struct device *dev = vou->dev;
- struct zx_layer_data data;
+ struct zx_plane *zplane;
struct zx_crtc *zcrtc;
int ret;
@@ -305,19 +305,25 @@ static int zx_crtc_init(struct drm_device *drm, struct zx_vou_hw *vou,
zcrtc->vou = vou;
zcrtc->chn_type = chn_type;
+ zplane = devm_kzalloc(dev, sizeof(*zplane), GFP_KERNEL);
+ if (!zplane)
+ return -ENOMEM;
+
+ zplane->dev = dev;
+
if (chn_type == VOU_CHN_MAIN) {
- data.layer = vou->osd + MAIN_GL_OFFSET;
- data.csc = vou->osd + MAIN_CSC_OFFSET;
- data.hbsc = vou->osd + MAIN_HBSC_OFFSET;
- data.rsz = vou->otfppu + MAIN_RSZ_OFFSET;
+ zplane->layer = vou->osd + MAIN_GL_OFFSET;
+ zplane->csc = vou->osd + MAIN_CSC_OFFSET;
+ zplane->hbsc = vou->osd + MAIN_HBSC_OFFSET;
+ zplane->rsz = vou->otfppu + MAIN_RSZ_OFFSET;
zcrtc->chnreg = vou->osd + OSD_MAIN_CHN;
zcrtc->regs = &main_crtc_regs;
zcrtc->bits = &main_crtc_bits;
} else {
- data.layer = vou->osd + AUX_GL_OFFSET;
- data.csc = vou->osd + AUX_CSC_OFFSET;
- data.hbsc = vou->osd + AUX_HBSC_OFFSET;
- data.rsz = vou->otfppu + AUX_RSZ_OFFSET;
+ zplane->layer = vou->osd + AUX_GL_OFFSET;
+ zplane->csc = vou->osd + AUX_CSC_OFFSET;
+ zplane->hbsc = vou->osd + AUX_HBSC_OFFSET;
+ zplane->rsz = vou->otfppu + AUX_RSZ_OFFSET;
zcrtc->chnreg = vou->osd + OSD_AUX_CHN;
zcrtc->regs = &aux_crtc_regs;
zcrtc->bits = &aux_crtc_bits;
@@ -331,13 +337,14 @@ static int zx_crtc_init(struct drm_device *drm, struct zx_vou_hw *vou,
return ret;
}
- zcrtc->primary = zx_plane_init(drm, dev, &data, DRM_PLANE_TYPE_PRIMARY);
- if (IS_ERR(zcrtc->primary)) {
- ret = PTR_ERR(zcrtc->primary);
+ ret = zx_plane_init(drm, zplane, DRM_PLANE_TYPE_PRIMARY);
+ if (ret) {
DRM_DEV_ERROR(dev, "failed to init primary plane: %d\n", ret);
return ret;
}
+ zcrtc->primary = &zplane->plane;
+
ret = drm_crtc_init_with_planes(drm, &zcrtc->crtc, zcrtc->primary, NULL,
&zx_crtc_funcs, NULL);
if (ret) {
--
1.9.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v4 2/3] drm: zte: add .atomic_disable hook to disable graphic layer
2017-01-09 14:35 [PATCH v4 0/3] Add overlay plane support for ZTE drm driver Shawn Guo
2017-01-09 14:35 ` [PATCH v4 1/3] drm: zte: make zx_plane accessible from zx_vou driver Shawn Guo
@ 2017-01-09 14:35 ` Shawn Guo
2017-01-09 14:35 ` [PATCH v4 3/3] drm: zte: add overlay plane support Shawn Guo
2 siblings, 0 replies; 6+ messages in thread
From: Shawn Guo @ 2017-01-09 14:35 UTC (permalink / raw)
To: linux-arm-kernel
From: Shawn Guo <shawn.guo@linaro.org>
There are a few hardware bits for each graphic layer to control main/aux
channel and clock selection, as well as the layer enabling. These bits
sit outside the layer block itself, but in VOU control glue block. We
currently set these bits up at CRTC initialization for once, and do not
support disabling the layer.
This patch creates a pair of functions zx_vou_layer_enable[disable] to
be invoked from plane hooks .atomic_update and .atomic_disable to set up
and tear down the layer. This is generic for both graphic and video
layers, so it will make the overlay plane support to be added later much
easier.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
---
drivers/gpu/drm/zte/zx_plane.c | 15 +++++++++
drivers/gpu/drm/zte/zx_plane.h | 1 +
drivers/gpu/drm/zte/zx_vou.c | 70 ++++++++++++++++++++++++++++++------------
drivers/gpu/drm/zte/zx_vou.h | 3 ++
4 files changed, 69 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/zte/zx_plane.c b/drivers/gpu/drm/zte/zx_plane.c
index 78d29b1db91c..5445eebf830f 100644
--- a/drivers/gpu/drm/zte/zx_plane.c
+++ b/drivers/gpu/drm/zte/zx_plane.c
@@ -197,12 +197,27 @@ static void zx_gl_plane_atomic_update(struct drm_plane *plane,
/* Enable HBSC block */
zx_writel_mask(hbsc + HBSC_CTRL0, HBSC_CTRL_EN, HBSC_CTRL_EN);
+ zx_vou_layer_enable(plane);
+
zx_gl_set_update(zplane);
}
+static void zx_plane_atomic_disable(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct zx_plane *zplane = to_zx_plane(plane);
+ void __iomem *hbsc = zplane->hbsc;
+
+ zx_vou_layer_disable(plane);
+
+ /* Disable HBSC block */
+ zx_writel_mask(hbsc + HBSC_CTRL0, HBSC_CTRL_EN, 0);
+}
+
static const struct drm_plane_helper_funcs zx_gl_plane_helper_funcs = {
.atomic_check = zx_gl_plane_atomic_check,
.atomic_update = zx_gl_plane_atomic_update,
+ .atomic_disable = zx_plane_atomic_disable,
};
static void zx_plane_destroy(struct drm_plane *plane)
diff --git a/drivers/gpu/drm/zte/zx_plane.h b/drivers/gpu/drm/zte/zx_plane.h
index 264a92e0b532..933611ddffd0 100644
--- a/drivers/gpu/drm/zte/zx_plane.h
+++ b/drivers/gpu/drm/zte/zx_plane.h
@@ -18,6 +18,7 @@ struct zx_plane {
void __iomem *csc;
void __iomem *hbsc;
void __iomem *rsz;
+ const struct vou_layer_bits *bits;
};
#define to_zx_plane(plane) container_of(plane, struct zx_plane, plane)
diff --git a/drivers/gpu/drm/zte/zx_vou.c b/drivers/gpu/drm/zte/zx_vou.c
index d5c801f6f97b..3fb4fc04e693 100644
--- a/drivers/gpu/drm/zte/zx_vou.c
+++ b/drivers/gpu/drm/zte/zx_vou.c
@@ -65,7 +65,6 @@ struct zx_crtc_bits {
u32 polarity_shift;
u32 int_frame_mask;
u32 tc_enable;
- u32 gl_enable;
};
static const struct zx_crtc_bits main_crtc_bits = {
@@ -73,7 +72,6 @@ struct zx_crtc_bits {
.polarity_shift = MAIN_POL_SHIFT,
.int_frame_mask = TIMING_INT_MAIN_FRAME,
.tc_enable = MAIN_TC_EN,
- .gl_enable = OSD_CTRL0_GL0_EN,
};
static const struct zx_crtc_bits aux_crtc_bits = {
@@ -81,7 +79,6 @@ struct zx_crtc_bits {
.polarity_shift = AUX_POL_SHIFT,
.int_frame_mask = TIMING_INT_AUX_FRAME,
.tc_enable = AUX_TC_EN,
- .gl_enable = OSD_CTRL0_GL1_EN,
};
struct zx_crtc {
@@ -97,6 +94,24 @@ struct zx_crtc {
#define to_zx_crtc(x) container_of(x, struct zx_crtc, crtc)
+struct vou_layer_bits {
+ u32 enable;
+ u32 chnsel;
+ u32 clksel;
+};
+
+static const struct vou_layer_bits zx_gl_bits[GL_NUM] = {
+ {
+ .enable = OSD_CTRL0_GL0_EN,
+ .chnsel = OSD_CTRL0_GL0_SEL,
+ .clksel = VOU_CLK_GL0_SEL,
+ }, {
+ .enable = OSD_CTRL0_GL1_EN,
+ .chnsel = OSD_CTRL0_GL1_SEL,
+ .clksel = VOU_CLK_GL1_SEL,
+ },
+};
+
struct zx_vou_hw {
struct device *dev;
void __iomem *osd;
@@ -220,10 +235,6 @@ static void zx_crtc_enable(struct drm_crtc *crtc)
/* Enable channel */
zx_writel_mask(zcrtc->chnreg + CHN_CTRL0, CHN_ENABLE, CHN_ENABLE);
- /* Enable Graphic Layer */
- zx_writel_mask(vou->osd + OSD_CTRL0, bits->gl_enable,
- bits->gl_enable);
-
drm_crtc_vblank_on(crtc);
ret = clk_set_rate(zcrtc->pixclk, mode->clock * 1000);
@@ -247,9 +258,6 @@ static void zx_crtc_disable(struct drm_crtc *crtc)
drm_crtc_vblank_off(crtc);
- /* Disable Graphic Layer */
- zx_writel_mask(vou->osd + OSD_CTRL0, bits->gl_enable, 0);
-
/* Disable channel */
zx_writel_mask(zcrtc->chnreg + CHN_CTRL0, CHN_ENABLE, 0);
@@ -316,6 +324,7 @@ static int zx_crtc_init(struct drm_device *drm, struct zx_vou_hw *vou,
zplane->csc = vou->osd + MAIN_CSC_OFFSET;
zplane->hbsc = vou->osd + MAIN_HBSC_OFFSET;
zplane->rsz = vou->otfppu + MAIN_RSZ_OFFSET;
+ zplane->bits = &zx_gl_bits[0];
zcrtc->chnreg = vou->osd + OSD_MAIN_CHN;
zcrtc->regs = &main_crtc_regs;
zcrtc->bits = &main_crtc_bits;
@@ -324,6 +333,7 @@ static int zx_crtc_init(struct drm_device *drm, struct zx_vou_hw *vou,
zplane->csc = vou->osd + AUX_CSC_OFFSET;
zplane->hbsc = vou->osd + AUX_HBSC_OFFSET;
zplane->rsz = vou->otfppu + AUX_RSZ_OFFSET;
+ zplane->bits = &zx_gl_bits[1];
zcrtc->chnreg = vou->osd + OSD_AUX_CHN;
zcrtc->regs = &aux_crtc_regs;
zcrtc->bits = &aux_crtc_bits;
@@ -411,6 +421,36 @@ void zx_vou_disable_vblank(struct drm_device *drm, unsigned int pipe)
zcrtc->bits->int_frame_mask, 0);
}
+void zx_vou_layer_enable(struct drm_plane *plane)
+{
+ struct zx_crtc *zcrtc = to_zx_crtc(plane->state->crtc);
+ struct zx_vou_hw *vou = zcrtc->vou;
+ struct zx_plane *zplane = to_zx_plane(plane);
+ const struct vou_layer_bits *bits = zplane->bits;
+
+ if (zcrtc->chn_type == VOU_CHN_MAIN) {
+ zx_writel_mask(vou->osd + OSD_CTRL0, bits->chnsel, 0);
+ zx_writel_mask(vou->vouctl + VOU_CLK_SEL, bits->clksel, 0);
+ } else {
+ zx_writel_mask(vou->osd + OSD_CTRL0, bits->chnsel,
+ bits->chnsel);
+ zx_writel_mask(vou->vouctl + VOU_CLK_SEL, bits->clksel,
+ bits->clksel);
+ }
+
+ zx_writel_mask(vou->osd + OSD_CTRL0, bits->enable, bits->enable);
+}
+
+void zx_vou_layer_disable(struct drm_plane *plane)
+{
+ struct zx_crtc *zcrtc = to_zx_crtc(plane->crtc);
+ struct zx_vou_hw *vou = zcrtc->vou;
+ struct zx_plane *zplane = to_zx_plane(plane);
+ const struct vou_layer_bits *bits = zplane->bits;
+
+ zx_writel_mask(vou->osd + OSD_CTRL0, bits->enable, 0);
+}
+
static irqreturn_t vou_irq_handler(int irq, void *dev_id)
{
struct zx_vou_hw *vou = dev_id;
@@ -469,19 +509,9 @@ static void vou_dtrc_init(struct zx_vou_hw *vou)
static void vou_hw_init(struct zx_vou_hw *vou)
{
- /* Set GL0 to main channel and GL1 to aux channel */
- zx_writel_mask(vou->osd + OSD_CTRL0, OSD_CTRL0_GL0_SEL, 0);
- zx_writel_mask(vou->osd + OSD_CTRL0, OSD_CTRL0_GL1_SEL,
- OSD_CTRL0_GL1_SEL);
-
/* Release reset for all VOU modules */
zx_writel(vou->vouctl + VOU_SOFT_RST, ~0);
- /* Select main clock for GL0 and aux clock for GL1 module */
- zx_writel_mask(vou->vouctl + VOU_CLK_SEL, VOU_CLK_GL0_SEL, 0);
- zx_writel_mask(vou->vouctl + VOU_CLK_SEL, VOU_CLK_GL1_SEL,
- VOU_CLK_GL1_SEL);
-
/* Enable clock auto-gating for all VOU modules */
zx_writel(vou->vouctl + VOU_CLK_REQEN, ~0);
diff --git a/drivers/gpu/drm/zte/zx_vou.h b/drivers/gpu/drm/zte/zx_vou.h
index 349e06cd86f4..4b4339be641b 100644
--- a/drivers/gpu/drm/zte/zx_vou.h
+++ b/drivers/gpu/drm/zte/zx_vou.h
@@ -43,4 +43,7 @@ struct vou_inf {
int zx_vou_enable_vblank(struct drm_device *drm, unsigned int pipe);
void zx_vou_disable_vblank(struct drm_device *drm, unsigned int pipe);
+void zx_vou_layer_enable(struct drm_plane *plane);
+void zx_vou_layer_disable(struct drm_plane *plane);
+
#endif /* __ZX_VOU_H__ */
--
1.9.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v4 3/3] drm: zte: add overlay plane support
2017-01-09 14:35 [PATCH v4 0/3] Add overlay plane support for ZTE drm driver Shawn Guo
2017-01-09 14:35 ` [PATCH v4 1/3] drm: zte: make zx_plane accessible from zx_vou driver Shawn Guo
2017-01-09 14:35 ` [PATCH v4 2/3] drm: zte: add .atomic_disable hook to disable graphic layer Shawn Guo
@ 2017-01-09 14:35 ` Shawn Guo
2017-01-09 16:27 ` Sean Paul
2 siblings, 1 reply; 6+ messages in thread
From: Shawn Guo @ 2017-01-09 14:35 UTC (permalink / raw)
To: linux-arm-kernel
From: Shawn Guo <shawn.guo@linaro.org>
It enables VOU VL (Video Layer) to support overlay plane with scaling
function. VL0 has some quirks on scaling support. We choose to skip it
and only adds VL1 and VL2 into DRM core for now.
Function zx_plane_atomic_disable() gets moved around with no changes to
save a forward declaration.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
drivers/gpu/drm/zte/zx_plane.c | 301 +++++++++++++++++++++++++++++++++---
drivers/gpu/drm/zte/zx_plane.h | 1 +
drivers/gpu/drm/zte/zx_plane_regs.h | 51 ++++++
drivers/gpu/drm/zte/zx_vou.c | 84 +++++++++-
drivers/gpu/drm/zte/zx_vou_regs.h | 18 +++
5 files changed, 426 insertions(+), 29 deletions(-)
diff --git a/drivers/gpu/drm/zte/zx_plane.c b/drivers/gpu/drm/zte/zx_plane.c
index 5445eebf830f..24426c2b4b8f 100644
--- a/drivers/gpu/drm/zte/zx_plane.c
+++ b/drivers/gpu/drm/zte/zx_plane.c
@@ -30,6 +30,261 @@
DRM_FORMAT_ARGB4444,
};
+static const uint32_t vl_formats[] = {
+ DRM_FORMAT_NV12, /* Semi-planar YUV420 */
+ DRM_FORMAT_YUV420, /* Planar YUV420 */
+ DRM_FORMAT_YUYV, /* Packed YUV422 */
+ DRM_FORMAT_YVYU,
+ DRM_FORMAT_UYVY,
+ DRM_FORMAT_VYUY,
+ DRM_FORMAT_YUV444, /* YUV444 8bit */
+ /*
+ * TODO: add formats below that HW supports:
+ * - YUV420 P010
+ * - YUV420 Hantro
+ * - YUV444 10bit
+ */
+};
+
+#define FRAC_16_16(mult, div) (((mult) << 16) / (div))
+
+static int zx_vl_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *plane_state)
+{
+ struct drm_framebuffer *fb = plane_state->fb;
+ struct drm_crtc *crtc = plane_state->crtc;
+ struct drm_crtc_state *crtc_state;
+ struct drm_rect clip;
+ int min_scale = FRAC_16_16(1, 8);
+ int max_scale = FRAC_16_16(8, 1);
+
+ if (!crtc || !fb)
+ return 0;
+
+ crtc_state = drm_atomic_get_existing_crtc_state(plane_state->state,
+ crtc);
+ if (WARN_ON(!crtc_state))
+ return -EINVAL;
+
+ /* nothing to check when disabling or disabled */
+ if (!crtc_state->enable)
+ return 0;
+
+ /* plane must be enabled */
+ if (!plane_state->crtc)
+ return -EINVAL;
+
+ clip.x1 = 0;
+ clip.y1 = 0;
+ clip.x2 = crtc_state->adjusted_mode.hdisplay;
+ clip.y2 = crtc_state->adjusted_mode.vdisplay;
+
+ return drm_plane_helper_check_state(plane_state, &clip,
+ min_scale, max_scale,
+ true, true);
+}
+
+static int zx_vl_get_fmt(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_NV12:
+ return VL_FMT_YUV420;
+ case DRM_FORMAT_YUV420:
+ return VL_YUV420_PLANAR | VL_FMT_YUV420;
+ case DRM_FORMAT_YUYV:
+ return VL_YUV422_YUYV | VL_FMT_YUV422;
+ case DRM_FORMAT_YVYU:
+ return VL_YUV422_YVYU | VL_FMT_YUV422;
+ case DRM_FORMAT_UYVY:
+ return VL_YUV422_UYVY | VL_FMT_YUV422;
+ case DRM_FORMAT_VYUY:
+ return VL_YUV422_VYUY | VL_FMT_YUV422;
+ case DRM_FORMAT_YUV444:
+ return VL_FMT_YUV444_8BIT;
+ default:
+ WARN_ONCE(1, "invalid pixel format %d\n", format);
+ return -EINVAL;
+ }
+}
+
+static inline void zx_vl_set_update(struct zx_plane *zplane)
+{
+ void __iomem *layer = zplane->layer;
+
+ zx_writel_mask(layer + VL_CTRL0, VL_UPDATE, VL_UPDATE);
+}
+
+static inline void zx_vl_rsz_set_update(struct zx_plane *zplane)
+{
+ zx_writel(zplane->rsz + RSZ_VL_ENABLE_CFG, 1);
+}
+
+static int zx_vl_rsz_get_fmt(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_YUV420:
+ return RSZ_VL_FMT_YCBCR420;
+ case DRM_FORMAT_YUYV:
+ case DRM_FORMAT_YVYU:
+ case DRM_FORMAT_UYVY:
+ case DRM_FORMAT_VYUY:
+ return RSZ_VL_FMT_YCBCR422;
+ case DRM_FORMAT_YUV444:
+ return RSZ_VL_FMT_YCBCR444;
+ default:
+ WARN_ONCE(1, "invalid pixel format %d\n", format);
+ return -EINVAL;
+ }
+}
+
+static inline u32 rsz_step_value(u32 src, u32 dst)
+{
+ u32 val = 0;
+
+ if (src == dst)
+ val = 0;
+ else if (src < dst)
+ val = RSZ_PARA_STEP((src << 16) / dst);
+ else if (src > dst)
+ val = RSZ_DATA_STEP(src / dst) |
+ RSZ_PARA_STEP(((src << 16) / dst) & 0xffff);
+
+ return val;
+}
+
+static void zx_vl_rsz_setup(struct zx_plane *zplane, uint32_t format,
+ u32 src_w, u32 src_h, u32 dst_w, u32 dst_h)
+{
+ void __iomem *rsz = zplane->rsz;
+ u32 src_chroma_w = src_w;
+ u32 src_chroma_h = src_h;
+ u32 fmt;
+
+ /* Set up source and destination resolution */
+ zx_writel(rsz + RSZ_SRC_CFG, RSZ_VER(src_h - 1) | RSZ_HOR(src_w - 1));
+ zx_writel(rsz + RSZ_DEST_CFG, RSZ_VER(dst_h - 1) | RSZ_HOR(dst_w - 1));
+
+ /* Configure data format for VL RSZ */
+ fmt = zx_vl_rsz_get_fmt(format);
+ if (fmt >= 0)
+ zx_writel_mask(rsz + RSZ_VL_CTRL_CFG, RSZ_VL_FMT_MASK, fmt);
+
+ /* Calculate Chroma height and width */
+ if (fmt == RSZ_VL_FMT_YCBCR420) {
+ src_chroma_w = src_w >> 1;
+ src_chroma_h = src_h >> 1;
+ } else if (fmt == RSZ_VL_FMT_YCBCR422) {
+ src_chroma_w = src_w >> 1;
+ }
+
+ /* Set up Luma and Chroma step registers */
+ zx_writel(rsz + RSZ_VL_LUMA_HOR, rsz_step_value(src_w, dst_w));
+ zx_writel(rsz + RSZ_VL_LUMA_VER, rsz_step_value(src_h, dst_h));
+ zx_writel(rsz + RSZ_VL_CHROMA_HOR, rsz_step_value(src_chroma_w, dst_w));
+ zx_writel(rsz + RSZ_VL_CHROMA_VER, rsz_step_value(src_chroma_h, dst_h));
+
+ zx_vl_rsz_set_update(zplane);
+}
+
+static void zx_vl_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct zx_plane *zplane = to_zx_plane(plane);
+ struct drm_plane_state *state = plane->state;
+ struct drm_framebuffer *fb = state->fb;
+ struct drm_rect *src = &state->src;
+ struct drm_rect *dst = &state->dst;
+ struct drm_gem_cma_object *cma_obj;
+ void __iomem *layer = zplane->layer;
+ void __iomem *hbsc = zplane->hbsc;
+ void __iomem *paddr_reg;
+ dma_addr_t paddr;
+ u32 src_x, src_y, src_w, src_h;
+ u32 dst_x, dst_y, dst_w, dst_h;
+ uint32_t format;
+ u32 fmt;
+ int num_planes;
+ int i;
+
+ if (!fb)
+ return;
+
+ format = fb->pixel_format;
+
+ src_x = src->x1 >> 16;
+ src_y = src->y1 >> 16;
+ src_w = drm_rect_width(src) >> 16;
+ src_h = drm_rect_height(src) >> 16;
+
+ dst_x = dst->x1;
+ dst_y = dst->y1;
+ dst_w = drm_rect_width(dst);
+ dst_h = drm_rect_height(dst);
+
+ /* Set up data address registers for Y, Cb and Cr planes */
+ num_planes = drm_format_num_planes(format);
+ paddr_reg = layer + VL_Y;
+ for (i = 0; i < num_planes; i++) {
+ cma_obj = drm_fb_cma_get_gem_obj(fb, i);
+ paddr = cma_obj->paddr + fb->offsets[i];
+ paddr += src_y * fb->pitches[i];
+ paddr += src_x * drm_format_plane_cpp(format, i);
+ zx_writel(paddr_reg, paddr);
+ paddr_reg += 4;
+ }
+
+ /* Set up source height/width register */
+ zx_writel(layer + VL_SRC_SIZE, GL_SRC_W(src_w) | GL_SRC_H(src_h));
+
+ /* Set up start position register */
+ zx_writel(layer + VL_POS_START, GL_POS_X(dst_x) | GL_POS_Y(dst_y));
+
+ /* Set up end position register */
+ zx_writel(layer + VL_POS_END,
+ GL_POS_X(dst_x + dst_w) | GL_POS_Y(dst_y + dst_h));
+
+ /* Strides of Cb and Cr planes should be identical */
+ zx_writel(layer + VL_STRIDE, LUMA_STRIDE(fb->pitches[0]) |
+ CHROMA_STRIDE(fb->pitches[1]));
+
+ /* Set up video layer data format */
+ fmt = zx_vl_get_fmt(format);
+ if (fmt >= 0)
+ zx_writel(layer + VL_CTRL1, fmt);
+
+ /* Always use scaler since it exists (set for not bypass) */
+ zx_writel_mask(layer + VL_CTRL2, VL_SCALER_BYPASS_MODE,
+ VL_SCALER_BYPASS_MODE);
+
+ zx_vl_rsz_setup(zplane, format, src_w, src_h, dst_w, dst_h);
+
+ /* Enable HBSC block */
+ zx_writel_mask(hbsc + HBSC_CTRL0, HBSC_CTRL_EN, HBSC_CTRL_EN);
+
+ zx_vou_layer_enable(plane);
+
+ zx_vl_set_update(zplane);
+}
+
+static void zx_plane_atomic_disable(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct zx_plane *zplane = to_zx_plane(plane);
+ void __iomem *hbsc = zplane->hbsc;
+
+ zx_vou_layer_disable(plane);
+
+ /* Disable HBSC block */
+ zx_writel_mask(hbsc + HBSC_CTRL0, HBSC_CTRL_EN, 0);
+}
+
+static const struct drm_plane_helper_funcs zx_vl_plane_helper_funcs = {
+ .atomic_check = zx_vl_plane_atomic_check,
+ .atomic_update = zx_vl_plane_atomic_update,
+ .atomic_disable = zx_plane_atomic_disable,
+};
+
static int zx_gl_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *plane_state)
{
@@ -97,14 +352,6 @@ static inline void zx_gl_rsz_set_update(struct zx_plane *zplane)
zx_writel(zplane->rsz + RSZ_ENABLE_CFG, 1);
}
-void zx_plane_set_update(struct drm_plane *plane)
-{
- struct zx_plane *zplane = to_zx_plane(plane);
-
- zx_gl_rsz_set_update(zplane);
- zx_gl_set_update(zplane);
-}
-
static void zx_gl_rsz_setup(struct zx_plane *zplane, u32 src_w, u32 src_h,
u32 dst_w, u32 dst_h)
{
@@ -202,18 +449,6 @@ static void zx_gl_plane_atomic_update(struct drm_plane *plane,
zx_gl_set_update(zplane);
}
-static void zx_plane_atomic_disable(struct drm_plane *plane,
- struct drm_plane_state *old_state)
-{
- struct zx_plane *zplane = to_zx_plane(plane);
- void __iomem *hbsc = zplane->hbsc;
-
- zx_vou_layer_disable(plane);
-
- /* Disable HBSC block */
- zx_writel_mask(hbsc + HBSC_CTRL0, HBSC_CTRL_EN, 0);
-}
-
static const struct drm_plane_helper_funcs zx_gl_plane_helper_funcs = {
.atomic_check = zx_gl_plane_atomic_check,
.atomic_update = zx_gl_plane_atomic_update,
@@ -235,6 +470,28 @@ static void zx_plane_destroy(struct drm_plane *plane)
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
+void zx_plane_set_update(struct drm_plane *plane)
+{
+ struct zx_plane *zplane = to_zx_plane(plane);
+
+ /* Do nothing if the layer is not enabled */
+ if (!zplane->enabled)
+ return;
+
+ switch (plane->type) {
+ case DRM_PLANE_TYPE_PRIMARY:
+ zx_gl_rsz_set_update(zplane);
+ zx_gl_set_update(zplane);
+ break;
+ case DRM_PLANE_TYPE_OVERLAY:
+ zx_vl_rsz_set_update(zplane);
+ zx_vl_set_update(zplane);
+ break;
+ default:
+ WARN_ONCE(1, "unsupported plane type %d\n", plane->type);
+ }
+}
+
static void zx_plane_hbsc_init(struct zx_plane *zplane)
{
void __iomem *hbsc = zplane->hbsc;
@@ -272,7 +529,9 @@ int zx_plane_init(struct drm_device *drm, struct zx_plane *zplane,
format_count = ARRAY_SIZE(gl_formats);
break;
case DRM_PLANE_TYPE_OVERLAY:
- /* TODO: add video layer (vl) support */
+ helper = &zx_vl_plane_helper_funcs;
+ formats = vl_formats;
+ format_count = ARRAY_SIZE(vl_formats);
break;
default:
return -ENODEV;
diff --git a/drivers/gpu/drm/zte/zx_plane.h b/drivers/gpu/drm/zte/zx_plane.h
index 933611ddffd0..e8f9b138114d 100644
--- a/drivers/gpu/drm/zte/zx_plane.h
+++ b/drivers/gpu/drm/zte/zx_plane.h
@@ -19,6 +19,7 @@ struct zx_plane {
void __iomem *hbsc;
void __iomem *rsz;
const struct vou_layer_bits *bits;
+ bool enabled;
};
#define to_zx_plane(plane) container_of(plane, struct zx_plane, plane)
diff --git a/drivers/gpu/drm/zte/zx_plane_regs.h b/drivers/gpu/drm/zte/zx_plane_regs.h
index 3dde6716a558..65f271aeabed 100644
--- a/drivers/gpu/drm/zte/zx_plane_regs.h
+++ b/drivers/gpu/drm/zte/zx_plane_regs.h
@@ -46,6 +46,37 @@
#define GL_POS_X(x) (((x) << GL_POS_X_SHIFT) & GL_POS_X_MASK)
#define GL_POS_Y(x) (((x) << GL_POS_Y_SHIFT) & GL_POS_Y_MASK)
+/* VL registers */
+#define VL_CTRL0 0x00
+#define VL_UPDATE BIT(3)
+#define VL_CTRL1 0x04
+#define VL_YUV420_PLANAR BIT(5)
+#define VL_YUV422_SHIFT 3
+#define VL_YUV422_YUYV (0 << VL_YUV422_SHIFT)
+#define VL_YUV422_YVYU (1 << VL_YUV422_SHIFT)
+#define VL_YUV422_UYVY (2 << VL_YUV422_SHIFT)
+#define VL_YUV422_VYUY (3 << VL_YUV422_SHIFT)
+#define VL_FMT_YUV420 0
+#define VL_FMT_YUV422 1
+#define VL_FMT_YUV420_P010 2
+#define VL_FMT_YUV420_HANTRO 3
+#define VL_FMT_YUV444_8BIT 4
+#define VL_FMT_YUV444_10BIT 5
+#define VL_CTRL2 0x08
+#define VL_SCALER_BYPASS_MODE BIT(0)
+#define VL_STRIDE 0x0c
+#define LUMA_STRIDE_SHIFT 16
+#define LUMA_STRIDE_MASK (0xffff << LUMA_STRIDE_SHIFT)
+#define CHROMA_STRIDE_SHIFT 0
+#define CHROMA_STRIDE_MASK (0xffff << CHROMA_STRIDE_SHIFT)
+#define VL_SRC_SIZE 0x10
+#define VL_Y 0x14
+#define VL_POS_START 0x30
+#define VL_POS_END 0x34
+
+#define LUMA_STRIDE(x) (((x) << LUMA_STRIDE_SHIFT) & LUMA_STRIDE_MASK)
+#define CHROMA_STRIDE(x) (((x) << CHROMA_STRIDE_SHIFT) & CHROMA_STRIDE_MASK)
+
/* CSC registers */
#define CSC_CTRL0 0x30
#define CSC_COV_MODE_SHIFT 16
@@ -69,6 +100,18 @@
#define RSZ_DEST_CFG 0x04
#define RSZ_ENABLE_CFG 0x14
+#define RSZ_VL_LUMA_HOR 0x08
+#define RSZ_VL_LUMA_VER 0x0c
+#define RSZ_VL_CHROMA_HOR 0x10
+#define RSZ_VL_CHROMA_VER 0x14
+#define RSZ_VL_CTRL_CFG 0x18
+#define RSZ_VL_FMT_SHIFT 3
+#define RSZ_VL_FMT_MASK (0x3 << RSZ_VL_FMT_SHIFT)
+#define RSZ_VL_FMT_YCBCR420 (0x0 << RSZ_VL_FMT_SHIFT)
+#define RSZ_VL_FMT_YCBCR422 (0x1 << RSZ_VL_FMT_SHIFT)
+#define RSZ_VL_FMT_YCBCR444 (0x2 << RSZ_VL_FMT_SHIFT)
+#define RSZ_VL_ENABLE_CFG 0x1c
+
#define RSZ_VER_SHIFT 16
#define RSZ_VER_MASK (0xffff << RSZ_VER_SHIFT)
#define RSZ_HOR_SHIFT 0
@@ -77,6 +120,14 @@
#define RSZ_VER(x) (((x) << RSZ_VER_SHIFT) & RSZ_VER_MASK)
#define RSZ_HOR(x) (((x) << RSZ_HOR_SHIFT) & RSZ_HOR_MASK)
+#define RSZ_DATA_STEP_SHIFT 16
+#define RSZ_DATA_STEP_MASK (0xffff << RSZ_DATA_STEP_SHIFT)
+#define RSZ_PARA_STEP_SHIFT 0
+#define RSZ_PARA_STEP_MASK (0xffff << RSZ_PARA_STEP_SHIFT)
+
+#define RSZ_DATA_STEP(x) (((x) << RSZ_DATA_STEP_SHIFT) & RSZ_DATA_STEP_MASK)
+#define RSZ_PARA_STEP(x) (((x) << RSZ_PARA_STEP_SHIFT) & RSZ_PARA_STEP_MASK)
+
/* HBSC registers */
#define HBSC_SATURATION 0x00
#define HBSC_HUE 0x04
diff --git a/drivers/gpu/drm/zte/zx_vou.c b/drivers/gpu/drm/zte/zx_vou.c
index 3fb4fc04e693..8e7edda184d0 100644
--- a/drivers/gpu/drm/zte/zx_vou.c
+++ b/drivers/gpu/drm/zte/zx_vou.c
@@ -112,6 +112,22 @@ struct vou_layer_bits {
},
};
+static const struct vou_layer_bits zx_vl_bits[VL_NUM] = {
+ {
+ .enable = OSD_CTRL0_VL0_EN,
+ .chnsel = OSD_CTRL0_VL0_SEL,
+ .clksel = VOU_CLK_VL0_SEL,
+ }, {
+ .enable = OSD_CTRL0_VL1_EN,
+ .chnsel = OSD_CTRL0_VL1_SEL,
+ .clksel = VOU_CLK_VL1_SEL,
+ }, {
+ .enable = OSD_CTRL0_VL2_EN,
+ .chnsel = OSD_CTRL0_VL2_SEL,
+ .clksel = VOU_CLK_VL2_SEL,
+ },
+};
+
struct zx_vou_hw {
struct device *dev;
void __iomem *osd;
@@ -125,6 +141,7 @@ struct zx_vou_hw {
struct clk *aux_clk;
struct zx_crtc *main_crtc;
struct zx_crtc *aux_crtc;
+ struct drm_plane *overlays[VL_NUM];
};
static inline struct zx_vou_hw *crtc_to_vou(struct drm_crtc *crtc)
@@ -439,6 +456,8 @@ void zx_vou_layer_enable(struct drm_plane *plane)
}
zx_writel_mask(vou->osd + OSD_CTRL0, bits->enable, bits->enable);
+
+ zplane->enabled = true;
}
void zx_vou_layer_disable(struct drm_plane *plane)
@@ -449,6 +468,57 @@ void zx_vou_layer_disable(struct drm_plane *plane)
const struct vou_layer_bits *bits = zplane->bits;
zx_writel_mask(vou->osd + OSD_CTRL0, bits->enable, 0);
+
+ zplane->enabled = false;
+}
+
+static void zx_overlay_init(struct drm_device *drm, struct zx_vou_hw *vou)
+{
+ struct device *dev = vou->dev;
+ struct zx_plane *zplane;
+ int i;
+ int ret;
+
+ /*
+ * VL0 has some quirks on scaling support which need special handling.
+ * Let's leave it out for now.
+ */
+ for (i = 1; i < VL_NUM; i++) {
+ zplane = devm_kzalloc(dev, sizeof(*zplane), GFP_KERNEL);
+ if (!zplane) {
+ DRM_DEV_ERROR(dev, "failed to allocate zplane %d\n", i);
+ return;
+ }
+
+ zplane->layer = vou->osd + OSD_VL_OFFSET(i);
+ zplane->hbsc = vou->osd + HBSC_VL_OFFSET(i);
+ zplane->rsz = vou->otfppu + RSZ_VL_OFFSET(i);
+ zplane->bits = &zx_vl_bits[i];
+
+ ret = zx_plane_init(drm, zplane, DRM_PLANE_TYPE_OVERLAY);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to init overlay %d\n", i);
+ continue;
+ }
+
+ vou->overlays[i] = &zplane->plane;
+ }
+}
+
+static inline void zx_osd_int_update(struct zx_crtc *zcrtc)
+{
+ struct zx_vou_hw *vou = zcrtc->vou;
+ int i;
+
+ vou_chn_set_update(zcrtc);
+ zx_plane_set_update(zcrtc->primary);
+
+ for (i = 0; i < VL_NUM; i++) {
+ struct drm_plane *overlay = vou->overlays[i];
+
+ if (overlay)
+ zx_plane_set_update(overlay);
+ }
}
static irqreturn_t vou_irq_handler(int irq, void *dev_id)
@@ -470,15 +540,11 @@ static irqreturn_t vou_irq_handler(int irq, void *dev_id)
state = zx_readl(vou->osd + OSD_INT_STA);
zx_writel(vou->osd + OSD_INT_CLRSTA, state);
- if (state & OSD_INT_MAIN_UPT) {
- vou_chn_set_update(vou->main_crtc);
- zx_plane_set_update(vou->main_crtc->primary);
- }
+ if (state & OSD_INT_MAIN_UPT)
+ zx_osd_int_update(vou->main_crtc);
- if (state & OSD_INT_AUX_UPT) {
- vou_chn_set_update(vou->aux_crtc);
- zx_plane_set_update(vou->aux_crtc->primary);
- }
+ if (state & OSD_INT_AUX_UPT)
+ zx_osd_int_update(vou->aux_crtc);
if (state & OSD_INT_ERROR)
DRM_DEV_ERROR(vou->dev, "OSD ERROR: 0x%08x!\n", state);
@@ -648,6 +714,8 @@ static int zx_crtc_bind(struct device *dev, struct device *master, void *data)
goto disable_ppu_clk;
}
+ zx_overlay_init(drm, vou);
+
return 0;
disable_ppu_clk:
diff --git a/drivers/gpu/drm/zte/zx_vou_regs.h b/drivers/gpu/drm/zte/zx_vou_regs.h
index f44e7a4ae441..193c1ce01fe7 100644
--- a/drivers/gpu/drm/zte/zx_vou_regs.h
+++ b/drivers/gpu/drm/zte/zx_vou_regs.h
@@ -22,6 +22,15 @@
#define AUX_HBSC_OFFSET 0x860
#define AUX_RSZ_OFFSET 0x800
+#define OSD_VL0_OFFSET 0x040
+#define OSD_VL_OFFSET(i) (OSD_VL0_OFFSET + 0x050 * (i))
+
+#define HBSC_VL0_OFFSET 0x760
+#define HBSC_VL_OFFSET(i) (HBSC_VL0_OFFSET + 0x040 * (i))
+
+#define RSZ_VL1_U0 0xa00
+#define RSZ_VL_OFFSET(i) (RSZ_VL1_U0 + 0x200 * (i))
+
/* OSD (GPC_GLOBAL) registers */
#define OSD_INT_STA 0x04
#define OSD_INT_CLRSTA 0x08
@@ -42,6 +51,12 @@
)
#define OSD_INT_ENABLE (OSD_INT_ERROR | OSD_INT_AUX_UPT | OSD_INT_MAIN_UPT)
#define OSD_CTRL0 0x10
+#define OSD_CTRL0_VL0_EN BIT(13)
+#define OSD_CTRL0_VL0_SEL BIT(12)
+#define OSD_CTRL0_VL1_EN BIT(11)
+#define OSD_CTRL0_VL1_SEL BIT(10)
+#define OSD_CTRL0_VL2_EN BIT(9)
+#define OSD_CTRL0_VL2_SEL BIT(8)
#define OSD_CTRL0_GL0_EN BIT(7)
#define OSD_CTRL0_GL0_SEL BIT(6)
#define OSD_CTRL0_GL1_EN BIT(5)
@@ -146,6 +161,9 @@
#define VOU_INF_DATA_SEL 0x08
#define VOU_SOFT_RST 0x14
#define VOU_CLK_SEL 0x18
+#define VOU_CLK_VL2_SEL BIT(8)
+#define VOU_CLK_VL1_SEL BIT(7)
+#define VOU_CLK_VL0_SEL BIT(6)
#define VOU_CLK_GL1_SEL BIT(5)
#define VOU_CLK_GL0_SEL BIT(4)
#define VOU_CLK_REQEN 0x20
--
1.9.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v4 3/3] drm: zte: add overlay plane support
2017-01-09 14:35 ` [PATCH v4 3/3] drm: zte: add overlay plane support Shawn Guo
@ 2017-01-09 16:27 ` Sean Paul
2017-01-10 1:17 ` Shawn Guo
0 siblings, 1 reply; 6+ messages in thread
From: Sean Paul @ 2017-01-09 16:27 UTC (permalink / raw)
To: linux-arm-kernel
On Mon, Jan 9, 2017 at 9:35 AM, Shawn Guo <shawnguo@kernel.org> wrote:
> From: Shawn Guo <shawn.guo@linaro.org>
>
> It enables VOU VL (Video Layer) to support overlay plane with scaling
> function. VL0 has some quirks on scaling support. We choose to skip it
> and only adds VL1 and VL2 into DRM core for now.
>
> Function zx_plane_atomic_disable() gets moved around with no changes to
> save a forward declaration.
>
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
> ---
> drivers/gpu/drm/zte/zx_plane.c | 301 +++++++++++++++++++++++++++++++++---
> drivers/gpu/drm/zte/zx_plane.h | 1 +
> drivers/gpu/drm/zte/zx_plane_regs.h | 51 ++++++
> drivers/gpu/drm/zte/zx_vou.c | 84 +++++++++-
> drivers/gpu/drm/zte/zx_vou_regs.h | 18 +++
> 5 files changed, 426 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/gpu/drm/zte/zx_plane.c b/drivers/gpu/drm/zte/zx_plane.c
> index 5445eebf830f..24426c2b4b8f 100644
<snip>
> diff --git a/drivers/gpu/drm/zte/zx_vou.c b/drivers/gpu/drm/zte/zx_vou.c
> index 3fb4fc04e693..8e7edda184d0 100644
> --- a/drivers/gpu/drm/zte/zx_vou.c
> +++ b/drivers/gpu/drm/zte/zx_vou.c
> @@ -112,6 +112,22 @@ struct vou_layer_bits {
> },
> };
>
> +static const struct vou_layer_bits zx_vl_bits[VL_NUM] = {
> + {
> + .enable = OSD_CTRL0_VL0_EN,
> + .chnsel = OSD_CTRL0_VL0_SEL,
> + .clksel = VOU_CLK_VL0_SEL,
> + }, {
> + .enable = OSD_CTRL0_VL1_EN,
> + .chnsel = OSD_CTRL0_VL1_SEL,
> + .clksel = VOU_CLK_VL1_SEL,
> + }, {
> + .enable = OSD_CTRL0_VL2_EN,
> + .chnsel = OSD_CTRL0_VL2_SEL,
> + .clksel = VOU_CLK_VL2_SEL,
> + },
> +};
> +
> struct zx_vou_hw {
> struct device *dev;
> void __iomem *osd;
> @@ -125,6 +141,7 @@ struct zx_vou_hw {
> struct clk *aux_clk;
> struct zx_crtc *main_crtc;
> struct zx_crtc *aux_crtc;
> + struct drm_plane *overlays[VL_NUM];
> };
>
> static inline struct zx_vou_hw *crtc_to_vou(struct drm_crtc *crtc)
> @@ -439,6 +456,8 @@ void zx_vou_layer_enable(struct drm_plane *plane)
> }
>
> zx_writel_mask(vou->osd + OSD_CTRL0, bits->enable, bits->enable);
> +
> + zplane->enabled = true;
> }
>
> void zx_vou_layer_disable(struct drm_plane *plane)
> @@ -449,6 +468,57 @@ void zx_vou_layer_disable(struct drm_plane *plane)
> const struct vou_layer_bits *bits = zplane->bits;
>
> zx_writel_mask(vou->osd + OSD_CTRL0, bits->enable, 0);
> +
> + zplane->enabled = false;
> +}
> +
> +static void zx_overlay_init(struct drm_device *drm, struct zx_vou_hw *vou)
> +{
> + struct device *dev = vou->dev;
> + struct zx_plane *zplane;
> + int i;
> + int ret;
> +
> + /*
> + * VL0 has some quirks on scaling support which need special handling.
> + * Let's leave it out for now.
> + */
> + for (i = 1; i < VL_NUM; i++) {
> + zplane = devm_kzalloc(dev, sizeof(*zplane), GFP_KERNEL);
> + if (!zplane) {
> + DRM_DEV_ERROR(dev, "failed to allocate zplane %d\n", i);
> + return;
> + }
> +
> + zplane->layer = vou->osd + OSD_VL_OFFSET(i);
> + zplane->hbsc = vou->osd + HBSC_VL_OFFSET(i);
> + zplane->rsz = vou->otfppu + RSZ_VL_OFFSET(i);
> + zplane->bits = &zx_vl_bits[i];
> +
> + ret = zx_plane_init(drm, zplane, DRM_PLANE_TYPE_OVERLAY);
> + if (ret) {
> + DRM_DEV_ERROR(dev, "failed to init overlay %d\n", i);
> + continue;
> + }
> +
> + vou->overlays[i] = &zplane->plane;
> + }
> +}
> +
> +static inline void zx_osd_int_update(struct zx_crtc *zcrtc)
> +{
> + struct zx_vou_hw *vou = zcrtc->vou;
> + int i;
> +
> + vou_chn_set_update(zcrtc);
> + zx_plane_set_update(zcrtc->primary);
> +
> + for (i = 0; i < VL_NUM; i++) {
> + struct drm_plane *overlay = vou->overlays[i];
> +
> + if (overlay)
> + zx_plane_set_update(overlay);
> + }
Hi Shawn,
Thanks so much for revving this patch, it's looking really good. I
just have one (1.5, really) suggestion.
I don't think we need to keep vou->overlays around. You should be able
to loop through all the planes registered with drm core and use
crtc->state->plane_mask to determine which are active for a given crtc
(this would also encapsulate the zcrtc->primary update above).
I think you can also use if (plane->state->crtc) as your
enable/disable check in zx_plane_set_update() and eliminate the new
enabled flag. I fully realize this was my suggestion, and I apologize
for the churn. I'll try not to do reviews past midnight again :-)
Sean
> }
>
> static irqreturn_t vou_irq_handler(int irq, void *dev_id)
> @@ -470,15 +540,11 @@ static irqreturn_t vou_irq_handler(int irq, void *dev_id)
> state = zx_readl(vou->osd + OSD_INT_STA);
> zx_writel(vou->osd + OSD_INT_CLRSTA, state);
>
> - if (state & OSD_INT_MAIN_UPT) {
> - vou_chn_set_update(vou->main_crtc);
> - zx_plane_set_update(vou->main_crtc->primary);
> - }
> + if (state & OSD_INT_MAIN_UPT)
> + zx_osd_int_update(vou->main_crtc);
>
> - if (state & OSD_INT_AUX_UPT) {
> - vou_chn_set_update(vou->aux_crtc);
> - zx_plane_set_update(vou->aux_crtc->primary);
> - }
> + if (state & OSD_INT_AUX_UPT)
> + zx_osd_int_update(vou->aux_crtc);
>
> if (state & OSD_INT_ERROR)
> DRM_DEV_ERROR(vou->dev, "OSD ERROR: 0x%08x!\n", state);
> @@ -648,6 +714,8 @@ static int zx_crtc_bind(struct device *dev, struct device *master, void *data)
> goto disable_ppu_clk;
> }
>
> + zx_overlay_init(drm, vou);
> +
> return 0;
>
> disable_ppu_clk:
> diff --git a/drivers/gpu/drm/zte/zx_vou_regs.h b/drivers/gpu/drm/zte/zx_vou_regs.h
> index f44e7a4ae441..193c1ce01fe7 100644
> --- a/drivers/gpu/drm/zte/zx_vou_regs.h
> +++ b/drivers/gpu/drm/zte/zx_vou_regs.h
> @@ -22,6 +22,15 @@
> #define AUX_HBSC_OFFSET 0x860
> #define AUX_RSZ_OFFSET 0x800
>
> +#define OSD_VL0_OFFSET 0x040
> +#define OSD_VL_OFFSET(i) (OSD_VL0_OFFSET + 0x050 * (i))
> +
> +#define HBSC_VL0_OFFSET 0x760
> +#define HBSC_VL_OFFSET(i) (HBSC_VL0_OFFSET + 0x040 * (i))
> +
> +#define RSZ_VL1_U0 0xa00
> +#define RSZ_VL_OFFSET(i) (RSZ_VL1_U0 + 0x200 * (i))
> +
> /* OSD (GPC_GLOBAL) registers */
> #define OSD_INT_STA 0x04
> #define OSD_INT_CLRSTA 0x08
> @@ -42,6 +51,12 @@
> )
> #define OSD_INT_ENABLE (OSD_INT_ERROR | OSD_INT_AUX_UPT | OSD_INT_MAIN_UPT)
> #define OSD_CTRL0 0x10
> +#define OSD_CTRL0_VL0_EN BIT(13)
> +#define OSD_CTRL0_VL0_SEL BIT(12)
> +#define OSD_CTRL0_VL1_EN BIT(11)
> +#define OSD_CTRL0_VL1_SEL BIT(10)
> +#define OSD_CTRL0_VL2_EN BIT(9)
> +#define OSD_CTRL0_VL2_SEL BIT(8)
> #define OSD_CTRL0_GL0_EN BIT(7)
> #define OSD_CTRL0_GL0_SEL BIT(6)
> #define OSD_CTRL0_GL1_EN BIT(5)
> @@ -146,6 +161,9 @@
> #define VOU_INF_DATA_SEL 0x08
> #define VOU_SOFT_RST 0x14
> #define VOU_CLK_SEL 0x18
> +#define VOU_CLK_VL2_SEL BIT(8)
> +#define VOU_CLK_VL1_SEL BIT(7)
> +#define VOU_CLK_VL0_SEL BIT(6)
> #define VOU_CLK_GL1_SEL BIT(5)
> #define VOU_CLK_GL0_SEL BIT(4)
> #define VOU_CLK_REQEN 0x20
> --
> 1.9.1
>
--
Sean Paul, Software Engineer, Google / Chromium OS
^ permalink raw reply [flat|nested] 6+ messages in thread* [PATCH v4 3/3] drm: zte: add overlay plane support
2017-01-09 16:27 ` Sean Paul
@ 2017-01-10 1:17 ` Shawn Guo
0 siblings, 0 replies; 6+ messages in thread
From: Shawn Guo @ 2017-01-10 1:17 UTC (permalink / raw)
To: linux-arm-kernel
Hi Sean,
On Mon, Jan 09, 2017 at 11:27:44AM -0500, Sean Paul wrote:
> > +static inline void zx_osd_int_update(struct zx_crtc *zcrtc)
> > +{
> > + struct zx_vou_hw *vou = zcrtc->vou;
> > + int i;
> > +
> > + vou_chn_set_update(zcrtc);
> > + zx_plane_set_update(zcrtc->primary);
> > +
> > + for (i = 0; i < VL_NUM; i++) {
> > + struct drm_plane *overlay = vou->overlays[i];
> > +
> > + if (overlay)
> > + zx_plane_set_update(overlay);
> > + }
>
> Hi Shawn,
> Thanks so much for revving this patch, it's looking really good. I
> just have one (1.5, really) suggestion.
>
> I don't think we need to keep vou->overlays around. You should be able
> to loop through all the planes registered with drm core and use
> crtc->state->plane_mask to determine which are active for a given crtc
> (this would also encapsulate the zcrtc->primary update above).
>
> I think you can also use if (plane->state->crtc) as your
> enable/disable check in zx_plane_set_update() and eliminate the new
> enabled flag.
Great. Since I'm still quite new to DRM subsystem, such core
infrastructural usage guide are really helpful for me. I tested the
changes as you suggested, and they worked just fine. So happy to see my
code gets cleaned up further.
> I fully realize this was my suggestion, and I apologize
> for the churn. I'll try not to do reviews past midnight again :-)
I'm so grateful to you for helping review my code, especially in
midnight time :)
Shawn
^ permalink raw reply [flat|nested] 6+ messages in thread