bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-30 04:22:32 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: Added support for individual control for multiple back-light instances.

Browse Source 
[Why & How]
Added support for individual control for multiple back-light instances.

Signed-off-by: Jake Wang <haonan.wang2@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jake Wang
2021-04-23 16:42:35 -04:00
committed by Alex Deucher
parent 05adfd80cc
commit 6e568e438b
6 changed files with 47 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/gpu/drm/amd/display/dc/dc_link.h
View File

@@ -216,6 +216,23 @@ static inline void get_edp_links(const struct dc *dc,
}
}
static inline bool dc_get_edp_link_panel_inst(const struct dc *dc,
const struct dc_link *link,
unsigned int *inst_out)
{
struct dc_link *edp_links[MAX_NUM_EDP];
int edp_num;
if (link->connector_signal != SIGNAL_TYPE_EDP)
return false;
get_edp_links(dc, edp_links, &edp_num);
if ((edp_num > 1) && (link->link_index > edp_links[0]->link_index))
*inst_out = 1;
else
*inst_out = 0;
return true;
}
/* Set backlight level of an embedded panel (eDP, LVDS).
* backlight_pwm_u16_16 is unsigned 32 bit with 16 bit integer
* and 16 bit fractional, where 1.0 is max backlight value.

10
drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c
View File

@@ -172,16 +172,12 @@ static bool dmub_abm_set_level(struct abm *abm, uint32_t level)
static bool dmub_abm_init_config(struct abm *abm,
const char *src,
unsigned int bytes)
unsigned int bytes,
unsigned int inst)
{
union dmub_rb_cmd cmd;
struct dc_context *dc = abm->ctx;
uint32_t edp_id_count = dc->dc_edp_id_count;
int i;
uint8_t panel_mask = 0;
for (i = 0; i < edp_id_count; i++)
panel_mask |= 0x01 << i;
uint8_t panel_mask = 0x01 << inst;
// TODO: Optimize by only reading back final 4 bytes
dmub_flush_buffer_mem(&dc->dmub_srv->dmub->scratch_mem_fb);

3
drivers/gpu/drm/amd/display/dc/inc/hw/abm.h
View File

@@ -52,7 +52,8 @@ struct abm_funcs {
unsigned int (*get_target_backlight)(struct abm *abm);
bool (*init_abm_config)(struct abm *abm,
const char *src,
unsigned int bytes);
unsigned int bytes,
unsigned int inst);
};
#endif