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 | 52 |
1 files changed, 43 insertions, 9 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_helper.c b/drivers/gpu/drm/amd/display/dc/dc_helper.c index 597d38393379..f9259e48c221 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_helper.c +++ b/drivers/gpu/drm/amd/display/dc/dc_helper.c @@ -51,20 +51,16 @@ static inline void set_reg_field_value_masks( field_value_mask->mask = field_value_mask->mask | mask; } -uint32_t generic_reg_update_ex(const struct dc_context *ctx, - uint32_t addr, uint32_t reg_val, int n, +static void set_reg_field_values(struct dc_reg_value_masks *field_value_mask, + uint32_t addr, int n, uint8_t shift1, uint32_t mask1, uint32_t field_value1, - ...) + va_list ap) { - struct dc_reg_value_masks field_value_mask = {0}; uint32_t shift, mask, field_value; int i = 1; - va_list ap; - va_start(ap, field_value1); - /* gather all bits value/mask getting updated in this register */ - set_reg_field_value_masks(&field_value_mask, + set_reg_field_value_masks(field_value_mask, field_value1, mask1, shift1); while (i < n) { @@ -72,10 +68,48 @@ uint32_t generic_reg_update_ex(const struct dc_context *ctx, mask = va_arg(ap, uint32_t); field_value = va_arg(ap, uint32_t); - set_reg_field_value_masks(&field_value_mask, + set_reg_field_value_masks(field_value_mask, field_value, mask, shift); i++; } +} + +uint32_t generic_reg_update_ex(const struct dc_context *ctx, + uint32_t addr, int n, + uint8_t shift1, uint32_t mask1, uint32_t field_value1, + ...) +{ + struct dc_reg_value_masks field_value_mask = {0}; + uint32_t reg_val; + va_list ap; + + va_start(ap, field_value1); + + set_reg_field_values(&field_value_mask, addr, n, shift1, mask1, + field_value1, ap); + + va_end(ap); + + /* mmio write directly */ + reg_val = dm_read_reg(ctx, addr); + reg_val = (reg_val & ~field_value_mask.mask) | field_value_mask.value; + dm_write_reg(ctx, addr, reg_val); + return reg_val; +} + +uint32_t generic_reg_set_ex(const struct dc_context *ctx, + uint32_t addr, uint32_t reg_val, int n, + uint8_t shift1, uint32_t mask1, uint32_t field_value1, + ...) +{ + struct dc_reg_value_masks field_value_mask = {0}; + va_list ap; + + va_start(ap, field_value1); + + set_reg_field_values(&field_value_mask, addr, n, shift1, mask1, + field_value1, ap); + va_end(ap); |