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Merge "msm: sde: SW workaround for REG_BLK_LUT_WRITE HW limitation"

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qctecmdr 2020-04-06 17:06:19 -07:00 • committed by Gerrit - the friendly Code Review server
commit fbb802950c
1 changed files with 18 additions and 1 deletions
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19
msm/sde/sde_hw_reg_dma_v1.c
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@ -48,6 +48,7 @@
(cfg)->dma_buf->index)
#define REL_ADDR_OPCODE (BIT(27))
#define NO_OP_OPCODE (0)
#define SINGLE_REG_WRITE_OPCODE (BIT(28))
#define SINGLE_REG_MODIFY_OPCODE (BIT(29))
#define HW_INDEX_REG_WRITE_OPCODE (BIT(28) | BIT(29))
@ -352,6 +353,7 @@ static int write_single_modify(struct sde_reg_dma_setup_ops_cfg *cfg)
static int write_block_lut_reg(struct sde_reg_dma_setup_ops_cfg *cfg)
{
u32 *loc = NULL;
int rc = -EINVAL;
loc = (u32 *)((u8 *)cfg->dma_buf->vaddr +
cfg->dma_buf->index);
@ -362,7 +364,22 @@ static int write_block_lut_reg(struct sde_reg_dma_setup_ops_cfg *cfg)
loc[1] |= (cfg->lut_size & LUTBUS_LUT_SIZE_MASK);
cfg->dma_buf->index += ops_mem_size[cfg->ops];
return write_multi_reg(cfg);
rc = write_multi_reg(cfg);
if (rc)
return rc;
/* adding 3 NO OPs as SW workaround for REG_BLK_LUT_WRITE
* HW limitation that requires the residual data plus the
* following opcode to exceed 4 DWORDs length.
*/
loc = (u32 *)((u8 *)cfg->dma_buf->vaddr +
cfg->dma_buf->index);
loc[0] = NO_OP_OPCODE;
loc[1] = NO_OP_OPCODE;
loc[2] = NO_OP_OPCODE;
cfg->dma_buf->index += sizeof(u32) * 3;
return 0;
}
static int write_decode_sel(struct sde_reg_dma_setup_ops_cfg *cfg)