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drm/rockchip: vop: add support mcu panel psr mode

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Psr mode can help reduce power consumption when using the mcu panel,
which supports to refresh the image on its own while it remains
unchanged.

Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Change-Id: Ie50b4e93fca2e11537c6b4715f15f8cc6008cfc7
This commit is contained in:
Damon Ding
2024-05-22 09:57:32 +08:00
parent 1a4bb8d18b
commit d4a9339e33
1 changed files with 13 additions and 1 deletions
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14
drivers/gpu/drm/rockchip/rockchip_drm_vop.c
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@@ -2183,7 +2183,17 @@ static void vop_crtc_atomic_disable_for_psr(struct drm_crtc *crtc,
{
struct vop *vop = to_vop(crtc);
vop_disable_all_planes(vop);
/*
* For mcu interface, if mcu_hold_mode is enabled, the wins will stop
* accessing DDR and the interface will also stop output.
*
* In addition, the regs operations in vop_disable_all_planes() will
* not take effect when the mcu_hold_mode is enabled.
*/
if (vop->mcu_timing.mcu_pix_total)
VOP_CTRL_SET(vop, mcu_hold_mode, 1);
else
vop_disable_all_planes(vop);
drm_crtc_vblank_off(crtc);
vop->aclk_rate = clk_get_rate(vop->aclk);
clk_set_rate(vop->aclk, vop->aclk_rate / 3);
@@ -4129,6 +4139,8 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc,
if (vop->aclk_rate_reset)
clk_set_rate(vop->aclk, vop->aclk_rate);
vop->aclk_rate_reset = false;
if (vop->mcu_timing.mcu_pix_total)
VOP_CTRL_SET(vop, mcu_hold_mode, 0);
return;
}