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drm/rockchip: vop: add support to read regs from mcu panel

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The reading function can be used for debugging while trying
to bring up the mcu panel, or reading some specific status
regs during the frame blanking period, and etc.

Change-Id: I29b153a78aa4a0ebb64f3156a37fddc67986bb49
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
This commit is contained in:
Damon Ding
2024-07-19 17:07:02 +08:00
committed by Tao Huang
parent add998a29e
commit 116a45108a
2 changed files with 8 additions and 1 deletions
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8
drivers/gpu/drm/rockchip/rockchip_drm_vop.c
View File

@@ -3168,10 +3168,11 @@ static void vop_mcu_mode_setup(struct drm_crtc *crtc)
VOP_CTRL_SET(vop, mcu_rw_pend, vop->mcu_timing.mcu_rw_pend);
}
static void vop_crtc_send_mcu_cmd(struct drm_crtc *crtc, u32 type, u32 value)
static void vop_crtc_send_mcu_cmd(struct drm_crtc *crtc, u32 type, u32 value)
{
struct drm_display_mode *adjusted_mode;
struct vop *vop = NULL;
uint32_t val = 0;
if (!crtc)
return;
@@ -3200,6 +3201,11 @@ static void vop_crtc_send_mcu_cmd(struct drm_crtc *crtc, u32 type, u32 value)
VOP_CTRL_SET(vop, mcu_rs, 1);
VOP_CTRL_SET(vop, mcu_rw_bypass_port, value);
break;
case MCU_RDDATA:
VOP_CTRL_SET(vop, mcu_rs, 1);
val = VOP_CTRL_GET(vop, mcu_rw_bypass_port);
DRM_DEBUG_DRIVER("mcu read reg[0x%02x] = 0x%02x", value, val);
break;
case MCU_SETBYPASS:
VOP_CTRL_SET(vop, mcu_bypass, value ? 1 : 0);
break;

1
drivers/gpu/drm/rockchip/rockchip_drm_vop.h
View File

@@ -694,6 +694,7 @@ enum _vop_rgb2rgb_conv_mode {
enum _MCU_IOCTL {
MCU_WRCMD = 0,
MCU_WRDATA,
MCU_RDDATA,
MCU_SETBYPASS,
};