diff options
| author | Noah Abradjian <noah.abradjian@amd.com> | 2019-12-17 15:49:14 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-01-16 14:13:53 -0500 |
| commit | c1e3417558beda21fd41ed870ca16b36a69188d5 (patch) | |
| tree | 5172d8d42dcbff9cb2e2da91f28644aa6f3625e9 /drivers/gpu/drm/amd/display/dc/inc/reg_helper.h | |
| parent | ec256f449c07b2498f624ec7b9ca41177c989d7c (diff) | |
drm/amd/display: Indirect reg read macro with shift and mask
[Why]
Recent double buffering changes for dcn2 use IX_REG_READ.
However, this macro returns the full register value, with the need to
manually shift and mask it to retrieve field data.
[How]
Create new IX_REG_GET macro that handles shift and mask.
Use this for double buffering reads instead of IX_REG_READ.
Signed-off-by: Noah Abradjian <noah.abradjian@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/inc/reg_helper.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/reg_helper.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/inc/reg_helper.h b/drivers/gpu/drm/amd/display/dc/inc/reg_helper.h index 47e307388581..2470405e996b 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/reg_helper.h +++ b/drivers/gpu/drm/amd/display/dc/inc/reg_helper.h @@ -458,7 +458,14 @@ uint32_t generic_reg_get8(const struct dc_context *ctx, uint32_t addr, #define IX_REG_READ(index_reg_name, data_reg_name, index) \ generic_read_indirect_reg(CTX, REG(index_reg_name), REG(data_reg_name), IND_REG(index)) +#define IX_REG_GET_N(index_reg_name, data_reg_name, index, n, ...) \ + generic_indirect_reg_get(CTX, REG(index_reg_name), REG(data_reg_name), \ + IND_REG(index), \ + n, __VA_ARGS__) +#define IX_REG_GET(index_reg_name, data_reg_name, index, field, val) \ + IX_REG_GET_N(index_reg_name, data_reg_name, index, 1, \ + FN(data_reg_name, field), val) #define IX_REG_UPDATE_N(index_reg_name, data_reg_name, index, n, ...) \ generic_indirect_reg_update_ex(CTX, \ @@ -479,6 +486,12 @@ uint32_t generic_read_indirect_reg(const struct dc_context *ctx, uint32_t addr_index, uint32_t addr_data, uint32_t index); +uint32_t generic_indirect_reg_get(const struct dc_context *ctx, + uint32_t addr_index, uint32_t addr_data, + uint32_t index, int n, + uint8_t shift1, uint32_t mask1, uint32_t *field_value1, + ...); + uint32_t generic_indirect_reg_update_ex(const struct dc_context *ctx, uint32_t addr_index, uint32_t addr_data, uint32_t index, uint32_t reg_val, int n, |