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Date: Thu, 20 May 2021 17:50:52 +0800
From: "quanyang.wang" <quanyang.wang@...driver.com>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: Paul Cercueil <paul@...pouillou.net>,
Hyun Kwon <hyun.kwon@...inx.com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Michal Simek <michal.simek@...inx.com>,
dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [V2][PATCH 1/2] drm: xlnx: add is_layer_vid() to simplify the
code
Hi Laurent,
Thank you for your review.
On 5/20/21 5:37 PM, Laurent Pinchart wrote:
> Hi Quanyang,
>
> Thank you for the patch.
>
> On Tue, May 18, 2021 at 05:50:18PM +0800, quanyang.wang@...driver.com wrote:
>> From: Quanyang Wang <quanyang.wang@...driver.com>
>>
>> Add a new function is_layer_vid() to simplify the code that
>> judges if a layer is the video layer.
>
> I like this, and especially passing the layer pointer to functions
> instead of the layer ID. I'm however wondering is we shouldn't name the
> function xlnx_zynqmp_disp_layer_is_video(), for consistency. If that's
> fine with you I can make the change when applying the patch to my tree,
> there's no need to submit a new version.
That's fine. Please help change the function name to
xlnx_zynqmp_disp_layer_is_video().
Thanks,
Quanyang
>
>> Acked-by: Paul Cercueil <paul@...pouillou.net>
>> Signed-off-by: Quanyang Wang <quanyang.wang@...driver.com>
>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
>
>> ---
>> drivers/gpu/drm/xlnx/zynqmp_disp.c | 39 +++++++++++++++++-------------
>> 1 file changed, 22 insertions(+), 17 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
>> index 109d627968ac..eefb278e24c6 100644
>> --- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
>> +++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
>> @@ -434,30 +434,35 @@ static void zynqmp_disp_avbuf_write(struct zynqmp_disp_avbuf *avbuf,
>> writel(val, avbuf->base + reg);
>> }
>>
>> +static bool is_layer_vid(const struct zynqmp_disp_layer *layer)
>> +{
>> + return layer->id == ZYNQMP_DISP_LAYER_VID;
>> +}
>> +
>> /**
>> * zynqmp_disp_avbuf_set_format - Set the input format for a layer
>> * @avbuf: Audio/video buffer manager
>> - * @layer: The layer ID
>> + * @layer: The layer
>> * @fmt: The format information
>> *
>> * Set the video buffer manager format for @layer to @fmt.
>> */
>> static void zynqmp_disp_avbuf_set_format(struct zynqmp_disp_avbuf *avbuf,
>> - enum zynqmp_disp_layer_id layer,
>> + struct zynqmp_disp_layer *layer,
>> const struct zynqmp_disp_format *fmt)
>> {
>> unsigned int i;
>> u32 val;
>>
>> val = zynqmp_disp_avbuf_read(avbuf, ZYNQMP_DISP_AV_BUF_FMT);
>> - val &= layer == ZYNQMP_DISP_LAYER_VID
>> + val &= is_layer_vid(layer)
>> ? ~ZYNQMP_DISP_AV_BUF_FMT_NL_VID_MASK
>> : ~ZYNQMP_DISP_AV_BUF_FMT_NL_GFX_MASK;
>> val |= fmt->buf_fmt;
>> zynqmp_disp_avbuf_write(avbuf, ZYNQMP_DISP_AV_BUF_FMT, val);
>>
>> for (i = 0; i < ZYNQMP_DISP_AV_BUF_NUM_SF; i++) {
>> - unsigned int reg = layer == ZYNQMP_DISP_LAYER_VID
>> + unsigned int reg = is_layer_vid(layer)
>> ? ZYNQMP_DISP_AV_BUF_VID_COMP_SF(i)
>> : ZYNQMP_DISP_AV_BUF_GFX_COMP_SF(i);
>>
>> @@ -573,19 +578,19 @@ static void zynqmp_disp_avbuf_disable_audio(struct zynqmp_disp_avbuf *avbuf)
>> /**
>> * zynqmp_disp_avbuf_enable_video - Enable a video layer
>> * @avbuf: Audio/video buffer manager
>> - * @layer: The layer ID
>> + * @layer: The layer
>> * @mode: Operating mode of layer
>> *
>> * Enable the video/graphics buffer for @layer.
>> */
>> static void zynqmp_disp_avbuf_enable_video(struct zynqmp_disp_avbuf *avbuf,
>> - enum zynqmp_disp_layer_id layer,
>> + struct zynqmp_disp_layer *layer,
>> enum zynqmp_disp_layer_mode mode)
>> {
>> u32 val;
>>
>> val = zynqmp_disp_avbuf_read(avbuf, ZYNQMP_DISP_AV_BUF_OUTPUT);
>> - if (layer == ZYNQMP_DISP_LAYER_VID) {
>> + if (is_layer_vid(layer)) {
>> val &= ~ZYNQMP_DISP_AV_BUF_OUTPUT_VID1_MASK;
>> if (mode == ZYNQMP_DISP_LAYER_NONLIVE)
>> val |= ZYNQMP_DISP_AV_BUF_OUTPUT_VID1_MEM;
>> @@ -605,17 +610,17 @@ static void zynqmp_disp_avbuf_enable_video(struct zynqmp_disp_avbuf *avbuf,
>> /**
>> * zynqmp_disp_avbuf_disable_video - Disable a video layer
>> * @avbuf: Audio/video buffer manager
>> - * @layer: The layer ID
>> + * @layer: The layer
>> *
>> * Disable the video/graphics buffer for @layer.
>> */
>> static void zynqmp_disp_avbuf_disable_video(struct zynqmp_disp_avbuf *avbuf,
>> - enum zynqmp_disp_layer_id layer)
>> + struct zynqmp_disp_layer *layer)
>> {
>> u32 val;
>>
>> val = zynqmp_disp_avbuf_read(avbuf, ZYNQMP_DISP_AV_BUF_OUTPUT);
>> - if (layer == ZYNQMP_DISP_LAYER_VID) {
>> + if (is_layer_vid(layer)) {
>> val &= ~ZYNQMP_DISP_AV_BUF_OUTPUT_VID1_MASK;
>> val |= ZYNQMP_DISP_AV_BUF_OUTPUT_VID1_NONE;
>> } else {
>> @@ -807,7 +812,7 @@ static void zynqmp_disp_blend_layer_set_csc(struct zynqmp_disp_blend *blend,
>> }
>> }
>>
>> - if (layer->id == ZYNQMP_DISP_LAYER_VID)
>> + if (is_layer_vid(layer))
>> reg = ZYNQMP_DISP_V_BLEND_IN1CSC_COEFF(0);
>> else
>> reg = ZYNQMP_DISP_V_BLEND_IN2CSC_COEFF(0);
>> @@ -818,7 +823,7 @@ static void zynqmp_disp_blend_layer_set_csc(struct zynqmp_disp_blend *blend,
>> zynqmp_disp_blend_write(blend, reg + 8, coeffs[i + swap[2]]);
>> }
>>
>> - if (layer->id == ZYNQMP_DISP_LAYER_VID)
>> + if (is_layer_vid(layer))
>> reg = ZYNQMP_DISP_V_BLEND_IN1CSC_OFFSET(0);
>> else
>> reg = ZYNQMP_DISP_V_BLEND_IN2CSC_OFFSET(0);
>> @@ -1025,7 +1030,7 @@ zynqmp_disp_layer_find_format(struct zynqmp_disp_layer *layer,
>> */
>> static void zynqmp_disp_layer_enable(struct zynqmp_disp_layer *layer)
>> {
>> - zynqmp_disp_avbuf_enable_video(&layer->disp->avbuf, layer->id,
>> + zynqmp_disp_avbuf_enable_video(&layer->disp->avbuf, layer,
>> ZYNQMP_DISP_LAYER_NONLIVE);
>> zynqmp_disp_blend_layer_enable(&layer->disp->blend, layer);
>>
>> @@ -1046,7 +1051,7 @@ static void zynqmp_disp_layer_disable(struct zynqmp_disp_layer *layer)
>> for (i = 0; i < layer->drm_fmt->num_planes; i++)
>> dmaengine_terminate_sync(layer->dmas[i].chan);
>>
>> - zynqmp_disp_avbuf_disable_video(&layer->disp->avbuf, layer->id);
>> + zynqmp_disp_avbuf_disable_video(&layer->disp->avbuf, layer);
>> zynqmp_disp_blend_layer_disable(&layer->disp->blend, layer);
>> }
>>
>> @@ -1067,7 +1072,7 @@ static void zynqmp_disp_layer_set_format(struct zynqmp_disp_layer *layer,
>> layer->disp_fmt = zynqmp_disp_layer_find_format(layer, info->format);
>> layer->drm_fmt = info;
>>
>> - zynqmp_disp_avbuf_set_format(&layer->disp->avbuf, layer->id,
>> + zynqmp_disp_avbuf_set_format(&layer->disp->avbuf, layer,
>> layer->disp_fmt);
>>
>> /*
>> @@ -1244,8 +1249,8 @@ static int zynqmp_disp_create_planes(struct zynqmp_disp *disp)
>> drm_formats[j] = layer->info->formats[j].drm_fmt;
>>
>> /* Graphics layer is primary, and video layer is overlay. */
>> - type = i == ZYNQMP_DISP_LAYER_GFX
>> - ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
>> + type = is_layer_vid(layer)
>> + ? DRM_PLANE_TYPE_OVERLAY : DRM_PLANE_TYPE_PRIMARY;
>> ret = drm_universal_plane_init(disp->drm, &layer->plane, 0,
>> &zynqmp_disp_plane_funcs,
>> drm_formats,
>
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