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media: hantro: vp9: use double buffering if needed

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Some G2 variants need double buffering to be enabled in order to work
correctly, like that found in Allwinner H6 SoC.

Add platform quirk for that.

Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Jernej Skrabec
2021-11-29 19:26:27 +01:00
committed by Mauro Carvalho Chehab
parent ea71631b71
commit e67a09d199
3 changed files with 5 additions and 0 deletions
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2
drivers/staging/media/hantro/hantro.h
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@@ -73,6 +73,7 @@ struct hantro_irq {
* @num_clocks: number of clocks in the array
* @reg_names: array of register range names
* @num_regs: number of register range names in the array
* @double_buffer: core needs double buffering
*/
struct hantro_variant {
unsigned int enc_offset;
@@ -94,6 +95,7 @@ struct hantro_variant {
int num_clocks;
const char * const *reg_names;
int num_regs;
unsigned int double_buffer : 1;
};
/**

1
drivers/staging/media/hantro/hantro_g2_regs.h
View File

@@ -270,6 +270,7 @@
#define g2_apf_threshold G2_DEC_REG(55, 0, 0xffff)
#define g2_clk_gate_e G2_DEC_REG(58, 16, 0x1)
#define g2_double_buffer_e G2_DEC_REG(58, 15, 0x1)
#define g2_buswidth G2_DEC_REG(58, 8, 0x7)
#define g2_max_burst G2_DEC_REG(58, 0, 0xff)

2
drivers/staging/media/hantro/hantro_g2_vp9_dec.c
View File

@@ -847,6 +847,8 @@ config_registers(struct hantro_ctx *ctx, const struct v4l2_ctrl_vp9_frame *dec_p
hantro_reg_write(ctx->dev, &g2_clk_gate_e, 1);
hantro_reg_write(ctx->dev, &g2_max_cb_size, 6);
hantro_reg_write(ctx->dev, &g2_min_cb_size, 3);
if (ctx->dev->variant->double_buffer)
hantro_reg_write(ctx->dev, &g2_double_buffer_e, 1);
config_output(ctx, dst, dec_params);