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imx-drm: stricter plane parameter checking, dw_hdmi-imx and dmfc fixes

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- Check whether plane parameters comply with IPU IDMAC limitations and
   fix planar YUV 4:2:0 U/V offsets and stride
 - Cleanup encoder in dw_hdmi-imx bind error path and
   remove a superfluous platform_set_drvdata in dw_hdmi-imx
 - DMFC setup fixes: lock the ipu_dmfc_init_channel function against
   concurrent use, rename it to ipu_dmfc_config_wait4eot, and call
   it after the FIFO size has been determined.
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Merge tag 'imx-drm-next-2016-04-01' of git://git.pengutronix.de/git/pza/linux into drm-fixes

imx-drm: stricter plane parameter checking, dw_hdmi-imx and dmfc fixes

- Check whether plane parameters comply with IPU IDMAC limitations and
  fix planar YUV 4:2:0 U/V offsets and stride
- Cleanup encoder in dw_hdmi-imx bind error path and
  remove a superfluous platform_set_drvdata in dw_hdmi-imx
- DMFC setup fixes: lock the ipu_dmfc_init_channel function against
  concurrent use, rename it to ipu_dmfc_config_wait4eot, and call
  it after the FIFO size has been determined.

* tag 'imx-drm-next-2016-04-01' of git://git.pengutronix.de/git/pza/linux:
  drm/imx: Don't set a gamma table size
  drm/imx: ipuv3-plane: Configure DMFC wait4eot bit after slots are determined
  gpu: ipu-v3: ipu-dmfc: Rename ipu_dmfc_init_channel to ipu_dmfc_config_wait4eot
  gpu: ipu-v3: ipu-dmfc: Make function ipu_dmfc_init_channel() return void
  gpu: ipu-v3: ipu-dmfc: Protect function ipu_dmfc_init_channel() with mutex
  drm/imx: dw_hdmi: Don't call platform_set_drvdata()
  drm/imx: dw_hdmi: Call drm_encoder_cleanup() in error path
  drm/imx: ipuv3-plane: fix planar YUV 4:2:0 support
  drm/imx: ipuv3-plane: Add more thorough checks for plane parameter limitations
  gpu: ipu-cpmem: modify ipu_cpmem_set_yuv_planar_full for better control
This commit is contained in:
Dave Airlie 2016-04-06 09:48:53 +10:00
commit 915e846d4b
7 changed files with 163 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/gpu/drm/imx/dw_hdmi-imx.c
View File

@ -225,8 +225,6 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master,
if (!iores)
return -ENXIO;
platform_set_drvdata(pdev, hdmi);
encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
/*
* If we failed to find the CRTC(s) which this encoder is
@ -245,7 +243,16 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master,
drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);
return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data);
ret = dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data);
/*
* If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
* which would have called the encoder cleanup. Do it manually.
*/
if (ret)
drm_encoder_cleanup(encoder);
return ret;
}
static void dw_hdmi_imx_unbind(struct device *dev, struct device *master,

10
drivers/gpu/drm/imx/imx-drm-core.c
View File

@ -326,7 +326,6 @@ int imx_drm_add_crtc(struct drm_device *drm, struct drm_crtc *crtc,
{
struct imx_drm_device *imxdrm = drm->dev_private;
struct imx_drm_crtc *imx_drm_crtc;
int ret;
/*
* The vblank arrays are dimensioned by MAX_CRTC - we can't
@ -351,10 +350,6 @@ int imx_drm_add_crtc(struct drm_device *drm, struct drm_crtc *crtc,
*new_crtc = imx_drm_crtc;
ret = drm_mode_crtc_set_gamma_size(imx_drm_crtc->crtc, 256);
if (ret)
goto err_register;
drm_crtc_helper_add(crtc,
imx_drm_crtc->imx_drm_helper_funcs.crtc_helper_funcs);
@ -362,11 +357,6 @@ int imx_drm_add_crtc(struct drm_device *drm, struct drm_crtc *crtc,
imx_drm_crtc->imx_drm_helper_funcs.crtc_funcs, NULL);
return 0;
err_register:
imxdrm->crtc[--imxdrm->pipes] = NULL;
kfree(imx_drm_crtc);
return ret;
}
EXPORT_SYMBOL_GPL(imx_drm_add_crtc);

121
drivers/gpu/drm/imx/ipuv3-plane.c
View File

@ -72,22 +72,101 @@ static inline int calc_bandwidth(int width, int height, unsigned int vref)
int ipu_plane_set_base(struct ipu_plane *ipu_plane, struct drm_framebuffer *fb,
int x, int y)
{
struct drm_gem_cma_object *cma_obj;
unsigned long eba;
int active;
struct drm_gem_cma_object *cma_obj[3];
unsigned long eba, ubo, vbo;
int active, i;
cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
if (!cma_obj) {
DRM_DEBUG_KMS("entry is null.\n");
return -EFAULT;
for (i = 0; i < drm_format_num_planes(fb->pixel_format); i++) {
cma_obj[i] = drm_fb_cma_get_gem_obj(fb, i);
if (!cma_obj[i]) {
DRM_DEBUG_KMS("plane %d entry is null.\n", i);
return -EFAULT;
}
}
dev_dbg(ipu_plane->base.dev->dev, "phys = %pad, x = %d, y = %d",
&cma_obj->paddr, x, y);
eba = cma_obj->paddr + fb->offsets[0] +
eba = cma_obj[0]->paddr + fb->offsets[0] +
fb->pitches[0] * y + (fb->bits_per_pixel >> 3) * x;
if (eba & 0x7) {
DRM_DEBUG_KMS("base address must be a multiple of 8.\n");
return -EINVAL;
}
if (fb->pitches[0] < 1 || fb->pitches[0] > 16384) {
DRM_DEBUG_KMS("pitches out of range.\n");
return -EINVAL;
}
if (ipu_plane->enabled && fb->pitches[0] != ipu_plane->stride[0]) {
DRM_DEBUG_KMS("pitches must not change while plane is enabled.\n");
return -EINVAL;
}
ipu_plane->stride[0] = fb->pitches[0];
switch (fb->pixel_format) {
case DRM_FORMAT_YUV420:
case DRM_FORMAT_YVU420:
/*
* Multiplanar formats have to meet the following restrictions:
* - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
* - EBA, UBO and VBO are a multiple of 8
* - UBO and VBO are unsigned and not larger than 0xfffff8
* - Only EBA may be changed while scanout is active
* - The strides of U and V planes must be identical.
*/
ubo = cma_obj[1]->paddr + fb->offsets[1] +
fb->pitches[1] * y / 2 + x / 2 - eba;
vbo = cma_obj[2]->paddr + fb->offsets[2] +
fb->pitches[2] * y / 2 + x / 2 - eba;
if ((ubo & 0x7) || (vbo & 0x7)) {
DRM_DEBUG_KMS("U/V buffer offsets must be a multiple of 8.\n");
return -EINVAL;
}
if ((ubo > 0xfffff8) || (vbo > 0xfffff8)) {
DRM_DEBUG_KMS("U/V buffer offsets must be positive and not larger than 0xfffff8.\n");
return -EINVAL;
}
if (ipu_plane->enabled && ((ipu_plane->u_offset != ubo) ||
(ipu_plane->v_offset != vbo))) {
DRM_DEBUG_KMS("U/V buffer offsets must not change while plane is enabled.\n");
return -EINVAL;
}
if (fb->pitches[1] != fb->pitches[2]) {
DRM_DEBUG_KMS("U/V pitches must be identical.\n");
return -EINVAL;
}
if (fb->pitches[1] < 1 || fb->pitches[1] > 16384) {
DRM_DEBUG_KMS("U/V pitches out of range.\n");
return -EINVAL;
}
if (ipu_plane->enabled &&
(ipu_plane->stride[1] != fb->pitches[1])) {
DRM_DEBUG_KMS("U/V pitches must not change while plane is enabled.\n");
return -EINVAL;
}
ipu_plane->u_offset = ubo;
ipu_plane->v_offset = vbo;
ipu_plane->stride[1] = fb->pitches[1];
dev_dbg(ipu_plane->base.dev->dev,
"phys = %pad %pad %pad, x = %d, y = %d",
&cma_obj[0]->paddr, &cma_obj[1]->paddr,
&cma_obj[2]->paddr, x, y);
break;
default:
dev_dbg(ipu_plane->base.dev->dev, "phys = %pad, x = %d, y = %d",
&cma_obj[0]->paddr, x, y);
break;
}
if (ipu_plane->enabled) {
active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch);
ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba);
@ -201,12 +280,6 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
}
}
ret = ipu_dmfc_init_channel(ipu_plane->dmfc, crtc_w);
if (ret) {
dev_err(dev, "initializing dmfc channel failed with %d\n", ret);
return ret;
}
ret = ipu_dmfc_alloc_bandwidth(ipu_plane->dmfc,
calc_bandwidth(crtc_w, crtc_h,
calc_vref(mode)), 64);
@ -215,6 +288,8 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
return ret;
}
ipu_dmfc_config_wait4eot(ipu_plane->dmfc, crtc_w);
ipu_cpmem_zero(ipu_plane->ipu_ch);
ipu_cpmem_set_resolution(ipu_plane->ipu_ch, src_w, src_h);
ret = ipu_cpmem_set_fmt(ipu_plane->ipu_ch, fb->pixel_format);
@ -233,6 +308,18 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
if (interlaced)
ipu_cpmem_interlaced_scan(ipu_plane->ipu_ch, fb->pitches[0]);
if (fb->pixel_format == DRM_FORMAT_YUV420) {
ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
ipu_plane->stride[1],
ipu_plane->u_offset,
ipu_plane->v_offset);
} else if (fb->pixel_format == DRM_FORMAT_YVU420) {
ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
ipu_plane->stride[1],
ipu_plane->v_offset,
ipu_plane->u_offset);
}
ipu_plane->w = src_w;
ipu_plane->h = src_h;

4
drivers/gpu/drm/imx/ipuv3-plane.h
View File

@ -29,6 +29,10 @@ struct ipu_plane {
int w;
int h;
unsigned int u_offset;
unsigned int v_offset;
unsigned int stride[2];
bool enabled;
};

79
drivers/gpu/ipu-v3/ipu-cpmem.c
View File

@ -395,60 +395,48 @@ void ipu_cpmem_set_yuv_interleaved(struct ipuv3_channel *ch, u32 pixel_format)
EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_interleaved);
void ipu_cpmem_set_yuv_planar_full(struct ipuv3_channel *ch,
u32 pixel_format, int stride,
int u_offset, int v_offset)
unsigned int uv_stride,
unsigned int u_offset, unsigned int v_offset)
{
switch (pixel_format) {
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YUV422P:
ipu_ch_param_write_field(ch, IPU_FIELD_SLUV, (stride / 2) - 1);
ipu_ch_param_write_field(ch, IPU_FIELD_UBO, u_offset / 8);
ipu_ch_param_write_field(ch, IPU_FIELD_VBO, v_offset / 8);
break;
case V4L2_PIX_FMT_YVU420:
ipu_ch_param_write_field(ch, IPU_FIELD_SLUV, (stride / 2) - 1);
ipu_ch_param_write_field(ch, IPU_FIELD_UBO, v_offset / 8);
ipu_ch_param_write_field(ch, IPU_FIELD_VBO, u_offset / 8);
break;
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV16:
ipu_ch_param_write_field(ch, IPU_FIELD_SLUV, stride - 1);
ipu_ch_param_write_field(ch, IPU_FIELD_UBO, u_offset / 8);
ipu_ch_param_write_field(ch, IPU_FIELD_VBO, u_offset / 8);
break;
}
ipu_ch_param_write_field(ch, IPU_FIELD_SLUV, uv_stride - 1);
ipu_ch_param_write_field(ch, IPU_FIELD_UBO, u_offset / 8);
ipu_ch_param_write_field(ch, IPU_FIELD_VBO, v_offset / 8);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_planar_full);
void ipu_cpmem_set_yuv_planar(struct ipuv3_channel *ch,
u32 pixel_format, int stride, int height)
{
int u_offset, v_offset;
int fourcc, u_offset, v_offset;
int uv_stride = 0;
switch (pixel_format) {
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YVU420:
fourcc = v4l2_pix_fmt_to_drm_fourcc(pixel_format);
switch (fourcc) {
case DRM_FORMAT_YUV420:
uv_stride = stride / 2;
u_offset = stride * height;
v_offset = u_offset + (uv_stride * height / 2);
ipu_cpmem_set_yuv_planar_full(ch, pixel_format, stride,
u_offset, v_offset);
break;
case V4L2_PIX_FMT_YUV422P:
case DRM_FORMAT_YVU420:
uv_stride = stride / 2;
v_offset = stride * height;
u_offset = v_offset + (uv_stride * height / 2);
break;
case DRM_FORMAT_YUV422:
uv_stride = stride / 2;
u_offset = stride * height;
v_offset = u_offset + (uv_stride * height);
ipu_cpmem_set_yuv_planar_full(ch, pixel_format, stride,
u_offset, v_offset);
break;
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV16:
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV16:
uv_stride = stride;
u_offset = stride * height;
ipu_cpmem_set_yuv_planar_full(ch, pixel_format, stride,
u_offset, 0);
v_offset = 0;
break;
default:
return;
}
ipu_cpmem_set_yuv_planar_full(ch, uv_stride, u_offset, v_offset);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_planar);
@ -684,6 +672,15 @@ int ipu_cpmem_set_image(struct ipuv3_channel *ch, struct ipu_image *image)
switch (pix->pixelformat) {
case V4L2_PIX_FMT_YUV420:
offset = Y_OFFSET(pix, image->rect.left, image->rect.top);
u_offset = U_OFFSET(pix, image->rect.left,
image->rect.top) - offset;
v_offset = V_OFFSET(pix, image->rect.left,
image->rect.top) - offset;
ipu_cpmem_set_yuv_planar_full(ch, pix->bytesperline / 2,
u_offset, v_offset);
break;
case V4L2_PIX_FMT_YVU420:
offset = Y_OFFSET(pix, image->rect.left, image->rect.top);
u_offset = U_OFFSET(pix, image->rect.left,
@ -691,9 +688,8 @@ int ipu_cpmem_set_image(struct ipuv3_channel *ch, struct ipu_image *image)
v_offset = V_OFFSET(pix, image->rect.left,
image->rect.top) - offset;
ipu_cpmem_set_yuv_planar_full(ch, pix->pixelformat,
pix->bytesperline,
u_offset, v_offset);
ipu_cpmem_set_yuv_planar_full(ch, pix->bytesperline / 2,
v_offset, u_offset);
break;
case V4L2_PIX_FMT_YUV422P:
offset = Y_OFFSET(pix, image->rect.left, image->rect.top);
@ -702,8 +698,7 @@ int ipu_cpmem_set_image(struct ipuv3_channel *ch, struct ipu_image *image)
v_offset = V2_OFFSET(pix, image->rect.left,
image->rect.top) - offset;
ipu_cpmem_set_yuv_planar_full(ch, pix->pixelformat,
pix->bytesperline,
ipu_cpmem_set_yuv_planar_full(ch, pix->bytesperline / 2,
u_offset, v_offset);
break;
case V4L2_PIX_FMT_NV12:
@ -712,8 +707,7 @@ int ipu_cpmem_set_image(struct ipuv3_channel *ch, struct ipu_image *image)
image->rect.top) - offset;
v_offset = 0;
ipu_cpmem_set_yuv_planar_full(ch, pix->pixelformat,
pix->bytesperline,
ipu_cpmem_set_yuv_planar_full(ch, pix->bytesperline,
u_offset, v_offset);
break;
case V4L2_PIX_FMT_NV16:
@ -722,8 +716,7 @@ int ipu_cpmem_set_image(struct ipuv3_channel *ch, struct ipu_image *image)
image->rect.top) - offset;
v_offset = 0;
ipu_cpmem_set_yuv_planar_full(ch, pix->pixelformat,
pix->bytesperline,
ipu_cpmem_set_yuv_planar_full(ch, pix->bytesperline,
u_offset, v_offset);
break;
case V4L2_PIX_FMT_UYVY:

8
drivers/gpu/ipu-v3/ipu-dmfc.c
View File

@ -350,11 +350,13 @@ out:
}
EXPORT_SYMBOL_GPL(ipu_dmfc_alloc_bandwidth);
int ipu_dmfc_init_channel(struct dmfc_channel *dmfc, int width)
void ipu_dmfc_config_wait4eot(struct dmfc_channel *dmfc, int width)
{
struct ipu_dmfc_priv *priv = dmfc->priv;
u32 dmfc_gen1;
mutex_lock(&priv->mutex);
dmfc_gen1 = readl(priv->base + DMFC_GENERAL1);
if ((dmfc->slots * 64 * 4) / width > dmfc->data->max_fifo_lines)
@ -364,9 +366,9 @@ int ipu_dmfc_init_channel(struct dmfc_channel *dmfc, int width)
writel(dmfc_gen1, priv->base + DMFC_GENERAL1);
return 0;
mutex_unlock(&priv->mutex);
}
EXPORT_SYMBOL_GPL(ipu_dmfc_init_channel);
EXPORT_SYMBOL_GPL(ipu_dmfc_config_wait4eot);
struct dmfc_channel *ipu_dmfc_get(struct ipu_soc *ipu, int ipu_channel)
{

7
include/video/imx-ipu-v3.h
View File

@ -194,8 +194,9 @@ int ipu_cpmem_set_format_rgb(struct ipuv3_channel *ch,
int ipu_cpmem_set_format_passthrough(struct ipuv3_channel *ch, int width);
void ipu_cpmem_set_yuv_interleaved(struct ipuv3_channel *ch, u32 pixel_format);
void ipu_cpmem_set_yuv_planar_full(struct ipuv3_channel *ch,
u32 pixel_format, int stride,
int u_offset, int v_offset);
unsigned int uv_stride,
unsigned int u_offset,
unsigned int v_offset);
void ipu_cpmem_set_yuv_planar(struct ipuv3_channel *ch,
u32 pixel_format, int stride, int height);
int ipu_cpmem_set_fmt(struct ipuv3_channel *ch, u32 drm_fourcc);
@ -236,7 +237,7 @@ void ipu_dmfc_disable_channel(struct dmfc_channel *dmfc);
int ipu_dmfc_alloc_bandwidth(struct dmfc_channel *dmfc,
unsigned long bandwidth_mbs, int burstsize);
void ipu_dmfc_free_bandwidth(struct dmfc_channel *dmfc);
int ipu_dmfc_init_channel(struct dmfc_channel *dmfc, int width);
void ipu_dmfc_config_wait4eot(struct dmfc_channel *dmfc, int width);
struct dmfc_channel *ipu_dmfc_get(struct ipu_soc *ipu, int ipuv3_channel);
void ipu_dmfc_put(struct dmfc_channel *dmfc);