diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_helper.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_helper.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_helper.c b/drivers/gpu/drm/amd/display/dc/dc_helper.c index bd0fda0ceb91..e68077e65565 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_helper.c +++ b/drivers/gpu/drm/amd/display/dc/dc_helper.c @@ -255,3 +255,54 @@ uint32_t generic_reg_wait(const struct dc_context *ctx, return reg_val; } + +void generic_write_indirect_reg(const struct dc_context *ctx, + uint32_t addr_index, uint32_t addr_data, + uint32_t index, uint32_t data) +{ + dm_write_reg(ctx, addr_index, index); + dm_write_reg(ctx, addr_data, data); +} + +uint32_t generic_read_indirect_reg(const struct dc_context *ctx, + uint32_t addr_index, uint32_t addr_data, + uint32_t index) +{ + uint32_t value = 0; + + dm_write_reg(ctx, addr_index, index); + value = dm_read_reg(ctx, addr_data); + + return value; +} + + +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, + uint8_t shift1, uint32_t mask1, uint32_t field_value1, + ...) +{ + uint32_t shift, mask, field_value; + int i = 1; + + va_list ap; + + va_start(ap, field_value1); + + reg_val = set_reg_field_value_ex(reg_val, field_value1, mask1, shift1); + + while (i < n) { + shift = va_arg(ap, uint32_t); + mask = va_arg(ap, uint32_t); + field_value = va_arg(ap, uint32_t); + + reg_val = set_reg_field_value_ex(reg_val, field_value, mask, shift); + i++; + } + + generic_write_indirect_reg(ctx, addr_index, addr_data, index, reg_val); + va_end(ap); + + return reg_val; +} |