diff options
Diffstat (limited to 'drivers/gpu/drm/mediatek')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_disp_ccorr.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c b/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c index 6c86673a835c..141cb36b9c07 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c @@ -30,7 +30,7 @@ #define DISP_CCORR_COEF_4 0x0090 struct mtk_disp_ccorr_data { - u32 reserved; + u32 matrix_bits; }; /** @@ -85,21 +85,22 @@ void mtk_ccorr_stop(struct device *dev) writel_relaxed(0x0, ccorr->regs + DISP_CCORR_EN); } -/* Converts a DRM S31.32 value to the HW S1.10 format. */ -static u16 mtk_ctm_s31_32_to_s1_10(u64 in) +/* Converts a DRM S31.32 value to the HW S1.n format. */ +static u16 mtk_ctm_s31_32_to_s1_n(u64 in, u32 n) { u16 r; /* Sign bit. */ - r = in & BIT_ULL(63) ? BIT(11) : 0; + r = in & BIT_ULL(63) ? BIT(n + 1) : 0; if ((in & GENMASK_ULL(62, 33)) > 0) { - /* identity value 0x100000000 -> 0x400, */ + /* identity value 0x100000000 -> 0x400(mt8183), */ + /* identity value 0x100000000 -> 0x800(mt8192), */ /* if bigger this, set it to max 0x7ff. */ - r |= GENMASK(10, 0); + r |= GENMASK(n, 0); } else { - /* take the 11 most important bits. */ - r |= (in >> 22) & GENMASK(10, 0); + /* take the n+1 most important bits. */ + r |= (in >> (32 - n)) & GENMASK(n, 0); } return r; @@ -114,6 +115,7 @@ void mtk_ccorr_ctm_set(struct device *dev, struct drm_crtc_state *state) uint16_t coeffs[9] = { 0 }; int i; struct cmdq_pkt *cmdq_pkt = NULL; + u32 matrix_bits = ccorr->data->matrix_bits; if (!blob) return; @@ -122,7 +124,7 @@ void mtk_ccorr_ctm_set(struct device *dev, struct drm_crtc_state *state) input = ctm->matrix; for (i = 0; i < ARRAY_SIZE(coeffs); i++) - coeffs[i] = mtk_ctm_s31_32_to_s1_10(input[i]); + coeffs[i] = mtk_ctm_s31_32_to_s1_n(input[i], matrix_bits); mtk_ddp_write(cmdq_pkt, coeffs[0] << 16 | coeffs[1], &ccorr->cmdq_reg, ccorr->regs, DISP_CCORR_COEF_0); @@ -199,8 +201,13 @@ static int mtk_disp_ccorr_remove(struct platform_device *pdev) return 0; } +static const struct mtk_disp_ccorr_data mt8183_ccorr_driver_data = { + .matrix_bits = 10, +}; + static const struct of_device_id mtk_disp_ccorr_driver_dt_match[] = { - { .compatible = "mediatek,mt8183-disp-ccorr"}, + { .compatible = "mediatek,mt8183-disp-ccorr", + .data = &mt8183_ccorr_driver_data}, {}, }; MODULE_DEVICE_TABLE(of, mtk_disp_ccorr_driver_dt_match); |