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SubjectRe: [PATCH v2 1/2] drm/komeda: Add line size support
Date
Hi Lowry,
On Wed, Sep 25, 2019 at 10:24:58AM +0000, Liviu Dudau wrote:
> Hi Lowry,
>
> On Tue, Sep 24, 2019 at 08:00:44AM +0000, Lowry Li (Arm Technology China) wrote:
> > From: "Lowry Li (Arm Technology China)" <Lowry.Li@arm.com>
> >
> > On D71, we are using the global line size. From D32, every
> > component have a line size register to indicate the fifo size.
> >
> > So this patch is to set line size support and do the line size
> > check.
> >
> > Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@arm.com>
> > ---
> > .../arm/display/komeda/d71/d71_component.c | 57 ++++++++++++++++---
> > .../gpu/drm/arm/display/komeda/d71/d71_regs.h | 9 +--
> > .../drm/arm/display/komeda/komeda_pipeline.h | 2 +
> > .../display/komeda/komeda_pipeline_state.c | 17 ++++++
> > 4 files changed, 70 insertions(+), 15 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
> > index 7b374a3b911e..357837b9d6ed 100644
> > --- a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
> > +++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
> > @@ -106,6 +106,23 @@ static void dump_block_header(struct seq_file *sf, void __iomem *reg)
> > i, hdr.output_ids[i]);
> > }
> >
> > +/* On D71, we are using the global line size. From D32, every component have
> > + * a line size register to indicate the fifo size.
> > + */
> > +static u32 __get_blk_line_size(struct d71_dev *d71, u32 __iomem *reg,
> > + u32 max_default)
> > +{
> > + if (!d71->periph_addr)
> > + max_default = malidp_read32(reg, BLK_MAX_LINE_SIZE);
> > +
> > + return max_default;
> > +}
> > +
> > +static u32 get_blk_line_size(struct d71_dev *d71, u32 __iomem *reg)
> > +{
> > + return __get_blk_line_size(d71, reg, d71->max_line_size);
> > +}
>
> I know you're trying to save typing the extra parameter, but looking at the rest of
> the diff I think it would look better if you get rid of get_blk_line_size() function
> and use the name for the function with 3 parameters.
>
> Otherwise, patch looks good to me.
>
> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
>
> Best regards,
> Liviu
Thanks for the comments.
But considering from D32 every component have a line size register
and no need default value, so we have get_blk_line_size() without
default argument and also can save some typing and lines. That's
why we want to keep __get_blk_line_size().

> > +
> > static u32 to_rot_ctrl(u32 rot)
> > {
> > u32 lr_ctrl = 0;
> > @@ -365,7 +382,28 @@ static int d71_layer_init(struct d71_dev *d71,
> > else
> > layer->layer_type = KOMEDA_FMT_SIMPLE_LAYER;
> >
> > - set_range(&layer->hsize_in, 4, d71->max_line_size);
> > + if (!d71->periph_addr) {
> > + /* D32 or newer product */
> > + layer->line_sz = malidp_read32(reg, BLK_MAX_LINE_SIZE);
> > + layer->yuv_line_sz = L_INFO_YUV_MAX_LINESZ(layer_info);
> > + } else if (d71->max_line_size > 2048) {
> > + /* D71 4K */
> > + layer->line_sz = d71->max_line_size;
> > + layer->yuv_line_sz = layer->line_sz / 2;
> > + } else {
> > + /* D71 2K */
> > + if (layer->layer_type == KOMEDA_FMT_RICH_LAYER) {
> > + /* rich layer is 4K configuration */
> > + layer->line_sz = d71->max_line_size * 2;
> > + layer->yuv_line_sz = layer->line_sz / 2;
> > + } else {
> > + layer->line_sz = d71->max_line_size;
> > + layer->yuv_line_sz = 0;
> > + }
> > + }
> > +
> > + set_range(&layer->hsize_in, 4, layer->line_sz);
> > +
> > set_range(&layer->vsize_in, 4, d71->max_vsize);
> >
> > malidp_write32(reg, LAYER_PALPHA, D71_PALPHA_DEF_MAP);
> > @@ -456,9 +494,11 @@ static int d71_wb_layer_init(struct d71_dev *d71,
> >
> > wb_layer = to_layer(c);
> > wb_layer->layer_type = KOMEDA_FMT_WB_LAYER;
> > + wb_layer->line_sz = get_blk_line_size(d71, reg);
> > + wb_layer->yuv_line_sz = wb_layer->line_sz;
> >
> > - set_range(&wb_layer->hsize_in, D71_MIN_LINE_SIZE, d71->max_line_size);
> > - set_range(&wb_layer->vsize_in, D71_MIN_VERTICAL_SIZE, d71->max_vsize);
> > + set_range(&wb_layer->hsize_in, 64, wb_layer->line_sz);
> > + set_range(&wb_layer->vsize_in, 64, d71->max_vsize);
> >
> > return 0;
> > }
> > @@ -595,8 +635,8 @@ static int d71_compiz_init(struct d71_dev *d71,
> >
> > compiz = to_compiz(c);
> >
> > - set_range(&compiz->hsize, D71_MIN_LINE_SIZE, d71->max_line_size);
> > - set_range(&compiz->vsize, D71_MIN_VERTICAL_SIZE, d71->max_vsize);
> > + set_range(&compiz->hsize, 64, get_blk_line_size(d71, reg));
> > + set_range(&compiz->vsize, 64, d71->max_vsize);
> >
> > return 0;
> > }
> > @@ -753,7 +793,7 @@ static int d71_scaler_init(struct d71_dev *d71,
> > }
> >
> > scaler = to_scaler(c);
> > - set_range(&scaler->hsize, 4, 2048);
> > + set_range(&scaler->hsize, 4, __get_blk_line_size(d71, reg, 2048));
> > set_range(&scaler->vsize, 4, 4096);
> > scaler->max_downscaling = 6;
> > scaler->max_upscaling = 64;
> > @@ -862,7 +902,7 @@ static int d71_splitter_init(struct d71_dev *d71,
> >
> > splitter = to_splitter(c);
> >
> > - set_range(&splitter->hsize, 4, d71->max_line_size);
> > + set_range(&splitter->hsize, 4, get_blk_line_size(d71, reg));
> > set_range(&splitter->vsize, 4, d71->max_vsize);
> >
> > return 0;
> > @@ -933,7 +973,8 @@ static int d71_merger_init(struct d71_dev *d71,
> >
> > merger = to_merger(c);
> >
> > - set_range(&merger->hsize_merged, 4, 4032);
> > + set_range(&merger->hsize_merged, 4,
> > + __get_blk_line_size(d71, reg, 4032));
> > set_range(&merger->vsize_merged, 4, 4096);
> >
> > return 0;
> > diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_regs.h b/drivers/gpu/drm/arm/display/komeda/d71/d71_regs.h
> > index 2d5e6d00b42c..1727dc993909 100644
> > --- a/drivers/gpu/drm/arm/display/komeda/d71/d71_regs.h
> > +++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_regs.h
> > @@ -10,6 +10,7 @@
> > /* Common block registers offset */
> > #define BLK_BLOCK_INFO 0x000
> > #define BLK_PIPELINE_INFO 0x004
> > +#define BLK_MAX_LINE_SIZE 0x008
> > #define BLK_VALID_INPUT_ID0 0x020
> > #define BLK_OUTPUT_ID0 0x060
> > #define BLK_INPUT_ID0 0x080
> > @@ -321,6 +322,7 @@
> > #define L_INFO_RF BIT(0)
> > #define L_INFO_CM BIT(1)
> > #define L_INFO_ABUF_SIZE(x) (((x) >> 4) & 0x7)
> > +#define L_INFO_YUV_MAX_LINESZ(x) (((x) >> 16) & 0xFFFF)
> >
> > /* Scaler registers */
> > #define SC_COEFFTAB 0x0DC
> > @@ -494,13 +496,6 @@ enum d71_blk_type {
> > #define D71_DEFAULT_PREPRETCH_LINE 5
> > #define D71_BUS_WIDTH_16_BYTES 16
> >
> > -#define D71_MIN_LINE_SIZE 64
> > -#define D71_MIN_VERTICAL_SIZE 64
> > -#define D71_SC_MIN_LIN_SIZE 4
> > -#define D71_SC_MIN_VERTICAL_SIZE 4
> > -#define D71_SC_MAX_LIN_SIZE 2048
> > -#define D71_SC_MAX_VERTICAL_SIZE 4096
> > -
> > #define D71_SC_MAX_UPSCALING 64
> > #define D71_SC_MAX_DOWNSCALING 6
> > #define D71_SC_SPLIT_OVERLAP 8
> > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
> > index 910d279ae48d..92aba58ce2a5 100644
> > --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
> > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
> > @@ -227,6 +227,8 @@ struct komeda_layer {
> > /* accepted h/v input range before rotation */
> > struct malidp_range hsize_in, vsize_in;
> > u32 layer_type; /* RICH, SIMPLE or WB */
> > + u32 line_sz;
> > + u32 yuv_line_sz; /* maximum line size for YUV422 and YUV420 */
> > u32 supported_rots;
> > /* komeda supports layer split which splits a whole image to two parts
> > * left and right and handle them by two individual layer processors
> > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
> > index 5526731f5a33..6df442666cfe 100644
> > --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
> > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
> > @@ -285,6 +285,7 @@ komeda_layer_check_cfg(struct komeda_layer *layer,
> > struct komeda_data_flow_cfg *dflow)
> > {
> > u32 src_x, src_y, src_w, src_h;
> > + u32 line_sz, max_line_sz;
> >
> > if (!komeda_fb_is_layer_supported(kfb, layer->layer_type, dflow->rot))
> > return -EINVAL;
> > @@ -314,6 +315,22 @@ komeda_layer_check_cfg(struct komeda_layer *layer,
> > return -EINVAL;
> > }
> >
> > + if (drm_rotation_90_or_270(dflow->rot))
> > + line_sz = dflow->in_h;
> > + else
> > + line_sz = dflow->in_w;
> > +
> > + if (kfb->base.format->hsub > 1)
> > + max_line_sz = layer->yuv_line_sz;
> > + else
> > + max_line_sz = layer->line_sz;
> > +
> > + if (line_sz > max_line_sz) {
> > + DRM_DEBUG_ATOMIC("Required line_sz: %d exceeds the max size %d\n",
> > + line_sz, max_line_sz);
> > + return -EINVAL;
> > + }
> > +
> > return 0;
> > }
> >
> > --
> > 2.17.1
> >
>
> --
> ====================
> | I would like to |
> | fix the world, |
> | but they're not |
> | giving me the |
> \ source code! /
> ---------------
> ¯\_(ツ)_/¯
\
 
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