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[82.69.107.165]) by smtp.gmail.com with ESMTPSA id k13sm2920926wrp.86.2021.10.16.03.19.16 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 16 Oct 2021 03:19:16 -0700 (PDT) From: Hugh Cole-Baker To: heiko@sntech.de, hjc@rock-chips.com Cc: dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Hugh Cole-Baker Subject: [PATCH 1/3] drm/rockchip: define gamma registers for RK3399 Date: Sat, 16 Oct 2021 11:18:50 +0100 Message-Id: <6c0eb4305a27dae76cc82331760ad7bc3c2a67bd.1634378097.git.sigmaris@gmail.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211016_031918_390249_760A8B56 X-CRM114-Status: GOOD ( 14.10 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The VOP on RK3399 has a different approach from previous versions for setting a gamma lookup table, using an update_gamma_lut register. As this differs from RK3288, give RK3399 its own set of "common" register definitions. Signed-off-by: Hugh Cole-Baker --- drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 2 ++ drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 24 +++++++++++++++++++-- drivers/gpu/drm/rockchip/rockchip_vop_reg.h | 1 + 3 files changed, 25 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h index 857d97cdc67c..14179e89bd21 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h @@ -99,6 +99,8 @@ struct vop_common { struct vop_reg dither_down_en; struct vop_reg dither_up; struct vop_reg dsp_lut_en; + struct vop_reg update_gamma_lut; + struct vop_reg lut_buffer_index; struct vop_reg gate_en; struct vop_reg mmu_en; struct vop_reg out_mode; diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c index 1f7353f0684a..16b70c2d87d2 100644 --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c @@ -865,6 +865,24 @@ static const struct vop_output rk3399_output = { .mipi_dual_channel_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 3), }; +static const struct vop_common rk3399_common = { + .standby = VOP_REG_SYNC(RK3399_SYS_CTRL, 0x1, 22), + .gate_en = VOP_REG(RK3399_SYS_CTRL, 0x1, 23), + .mmu_en = VOP_REG(RK3399_SYS_CTRL, 0x1, 20), + .dither_down_sel = VOP_REG(RK3399_DSP_CTRL1, 0x1, 4), + .dither_down_mode = VOP_REG(RK3399_DSP_CTRL1, 0x1, 3), + .dither_down_en = VOP_REG(RK3399_DSP_CTRL1, 0x1, 2), + .pre_dither_down = VOP_REG(RK3399_DSP_CTRL1, 0x1, 1), + .dither_up = VOP_REG(RK3399_DSP_CTRL1, 0x1, 6), + .dsp_lut_en = VOP_REG(RK3399_DSP_CTRL1, 0x1, 0), + .update_gamma_lut = VOP_REG(RK3399_DSP_CTRL1, 0x1, 7), + .lut_buffer_index = VOP_REG(RK3399_DBG_POST_REG1, 0x1, 1), + .data_blank = VOP_REG(RK3399_DSP_CTRL0, 0x1, 19), + .dsp_blank = VOP_REG(RK3399_DSP_CTRL0, 0x3, 18), + .out_mode = VOP_REG(RK3399_DSP_CTRL0, 0xf, 0), + .cfg_done = VOP_REG_SYNC(RK3399_REG_CFG_DONE, 0x1, 0), +}; + static const struct vop_yuv2yuv_phy rk3399_yuv2yuv_win01_data = { .y2r_coefficients = { VOP_REG(RK3399_WIN0_YUV2YUV_Y2R + 0, 0xffff, 0), @@ -944,7 +962,7 @@ static const struct vop_data rk3399_vop_big = { .version = VOP_VERSION(3, 5), .feature = VOP_FEATURE_OUTPUT_RGB10, .intr = &rk3366_vop_intr, - .common = &rk3288_common, + .common = &rk3399_common, .modeset = &rk3288_modeset, .output = &rk3399_output, .afbc = &rk3399_vop_afbc, @@ -952,6 +970,7 @@ static const struct vop_data rk3399_vop_big = { .win = rk3399_vop_win_data, .win_size = ARRAY_SIZE(rk3399_vop_win_data), .win_yuv2yuv = rk3399_vop_big_win_yuv2yuv_data, + .lut_size = 1024, }; static const struct vop_win_data rk3399_vop_lit_win_data[] = { @@ -970,13 +989,14 @@ static const struct vop_win_yuv2yuv_data rk3399_vop_lit_win_yuv2yuv_data[] = { static const struct vop_data rk3399_vop_lit = { .version = VOP_VERSION(3, 6), .intr = &rk3366_vop_intr, - .common = &rk3288_common, + .common = &rk3399_common, .modeset = &rk3288_modeset, .output = &rk3399_output, .misc = &rk3368_misc, .win = rk3399_vop_lit_win_data, .win_size = ARRAY_SIZE(rk3399_vop_lit_win_data), .win_yuv2yuv = rk3399_vop_lit_win_yuv2yuv_data, + .lut_size = 256, }; static const struct vop_win_data rk3228_vop_win_data[] = { diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.h b/drivers/gpu/drm/rockchip/rockchip_vop_reg.h index 0b3cd65ba5c1..406e981c75bd 100644 --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.h +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.h @@ -628,6 +628,7 @@ #define RK3399_YUV2YUV_WIN 0x02c0 #define RK3399_YUV2YUV_POST 0x02c4 #define RK3399_AUTO_GATING_EN 0x02cc +#define RK3399_DBG_POST_REG1 0x036c #define RK3399_WIN0_CSC_COE 0x03a0 #define RK3399_WIN1_CSC_COE 0x03c0 #define RK3399_WIN2_CSC_COE 0x03e0 From patchwork Sat Oct 16 10:18:51 2021 Content-Type: text/plain; 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[82.69.107.165]) by smtp.gmail.com with ESMTPSA id k13sm2920926wrp.86.2021.10.16.03.19.25 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 16 Oct 2021 03:19:26 -0700 (PDT) From: Hugh Cole-Baker To: heiko@sntech.de, hjc@rock-chips.com Cc: dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Hugh Cole-Baker Subject: [PATCH 2/3] drm/rockchip: support gamma control on RK3399 Date: Sat, 16 Oct 2021 11:18:51 +0100 Message-Id: X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211016_031928_183329_89B6BE3E X-CRM114-Status: GOOD ( 20.88 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The RK3399 has a 1024-entry gamma LUT with 10 bits per component on its "big" VOP and a 256-entry, 8 bit per component LUT on the "little" VOP. Compared to the RK3288, it no longer requires disabling gamma while updating the LUT. On the RK3399, the LUT can be updated at any time as the hardware has two LUT buffers, one can be written while the other is in use. A swap of the buffers is triggered by writing 1 to the update_gamma_lut register. Signed-off-by: Hugh Cole-Baker --- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 89 +++++++++++++++------ 1 file changed, 63 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index ba9e14da41b4..937ad82abe69 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -66,6 +67,9 @@ #define VOP_REG_SET(vop, group, name, v) \ vop_reg_set(vop, &vop->data->group->name, 0, ~0, v, #name) +#define VOP_HAS_REG(vop, group, name) \ + (!!(vop->data->group->name.mask)) + #define VOP_INTR_SET_TYPE(vop, name, type, v) \ do { \ int i, reg = 0, mask = 0; \ @@ -1204,17 +1208,22 @@ static bool vop_dsp_lut_is_enabled(struct vop *vop) return vop_read_reg(vop, 0, &vop->data->common->dsp_lut_en); } +static u32 vop_lut_buffer_index(struct vop *vop) +{ + return vop_read_reg(vop, 0, &vop->data->common->lut_buffer_index); +} + static void vop_crtc_write_gamma_lut(struct vop *vop, struct drm_crtc *crtc) { struct drm_color_lut *lut = crtc->state->gamma_lut->data; - unsigned int i; + unsigned int i, bpc = ilog2(vop->data->lut_size); for (i = 0; i < crtc->gamma_size; i++) { u32 word; - word = (drm_color_lut_extract(lut[i].red, 10) << 20) | - (drm_color_lut_extract(lut[i].green, 10) << 10) | - drm_color_lut_extract(lut[i].blue, 10); + word = (drm_color_lut_extract(lut[i].red, bpc) << (2 * bpc)) | + (drm_color_lut_extract(lut[i].green, bpc) << bpc) | + drm_color_lut_extract(lut[i].blue, bpc); writel(word, vop->lut_regs + i * 4); } } @@ -1224,38 +1233,66 @@ static void vop_crtc_gamma_set(struct vop *vop, struct drm_crtc *crtc, { struct drm_crtc_state *state = crtc->state; unsigned int idle; + u32 lut_idx, old_idx; int ret; if (!vop->lut_regs) return; - /* - * To disable gamma (gamma_lut is null) or to write - * an update to the LUT, clear dsp_lut_en. - */ - spin_lock(&vop->reg_lock); - VOP_REG_SET(vop, common, dsp_lut_en, 0); - vop_cfg_done(vop); - spin_unlock(&vop->reg_lock); - /* - * In order to write the LUT to the internal memory, - * we need to first make sure the dsp_lut_en bit is cleared. - */ - ret = readx_poll_timeout(vop_dsp_lut_is_enabled, vop, - idle, !idle, 5, 30 * 1000); - if (ret) { - DRM_DEV_ERROR(vop->dev, "display LUT RAM enable timeout!\n"); - return; - } + if (!state->gamma_lut || !VOP_HAS_REG(vop, common, update_gamma_lut)) { + /* + * To disable gamma (gamma_lut is null) or to write + * an update to the LUT, clear dsp_lut_en. + */ + spin_lock(&vop->reg_lock); + VOP_REG_SET(vop, common, dsp_lut_en, 0); + vop_cfg_done(vop); + spin_unlock(&vop->reg_lock); - if (!state->gamma_lut) - return; + /* + * In order to write the LUT to the internal memory, + * we need to first make sure the dsp_lut_en bit is cleared. + */ + ret = readx_poll_timeout(vop_dsp_lut_is_enabled, vop, + idle, !idle, 5, 30 * 1000); + if (ret) { + DRM_DEV_ERROR(vop->dev, "display LUT RAM enable timeout!\n"); + return; + } + + if (!state->gamma_lut) + return; + } else { + /* + * On RK3399 the gamma LUT can updated without clearing dsp_lut_en, + * by setting update_gamma_lut then waiting for lut_buffer_index change + */ + old_idx = vop_lut_buffer_index(vop); + } spin_lock(&vop->reg_lock); vop_crtc_write_gamma_lut(vop, crtc); VOP_REG_SET(vop, common, dsp_lut_en, 1); + VOP_REG_SET(vop, common, update_gamma_lut, 1); vop_cfg_done(vop); spin_unlock(&vop->reg_lock); + + if (VOP_HAS_REG(vop, common, update_gamma_lut)) { + ret = readx_poll_timeout(vop_lut_buffer_index, vop, + lut_idx, lut_idx != old_idx, 5, 30 * 1000); + if (ret) { + DRM_DEV_ERROR(vop->dev, "gamma LUT update timeout!\n"); + return; + } + + /* + * update_gamma_lut is auto cleared by HW, but write 0 to clear the bit + * in our backup of the regs. + */ + spin_lock(&vop->reg_lock); + VOP_REG_SET(vop, common, update_gamma_lut, 0); + spin_unlock(&vop->reg_lock); + } } static void vop_crtc_atomic_begin(struct drm_crtc *crtc, @@ -2125,8 +2162,8 @@ static int vop_bind(struct device *dev, struct device *master, void *data) res = platform_get_resource(pdev, IORESOURCE_MEM, 1); if (res) { - if (!vop_data->lut_size) { - DRM_DEV_ERROR(dev, "no gamma LUT size defined\n"); + if (vop_data->lut_size != 1024 && vop_data->lut_size != 256) { + DRM_DEV_ERROR(dev, "unsupported gamma LUT size %d\n", vop_data->lut_size); return -EINVAL; } vop->lut_regs = devm_ioremap_resource(dev, res); From patchwork Sat Oct 16 10:18:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugh Cole-Baker X-Patchwork-Id: 12563479 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 12471C433F5 for ; Sat, 16 Oct 2021 10:19:55 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AF23660F36 for ; 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[82.69.107.165]) by smtp.gmail.com with ESMTPSA id k13sm2920926wrp.86.2021.10.16.03.19.33 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 16 Oct 2021 03:19:33 -0700 (PDT) From: Hugh Cole-Baker To: heiko@sntech.de, hjc@rock-chips.com Cc: dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Hugh Cole-Baker Subject: [PATCH 3/3] arm64: dts: rockchip: enable gamma control on RK3399 Date: Sat, 16 Oct 2021 11:18:52 +0100 Message-Id: X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211016_031935_610034_9FB8D687 X-CRM114-Status: GOOD ( 10.41 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Define the memory region on RK3399 VOPs containing the gamma LUT at base+0x2000. Signed-off-by: Hugh Cole-Baker --- arch/arm64/boot/dts/rockchip/rk3399.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi index 3871c7fd83b0..9cbf6ccdd256 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi @@ -1619,7 +1619,7 @@ i2s2: i2s@ff8a0000 { vopl: vop@ff8f0000 { compatible = "rockchip,rk3399-vop-lit"; - reg = <0x0 0xff8f0000 0x0 0x3efc>; + reg = <0x0 0xff8f0000 0x0 0x2000>, <0x0 0xff8f2000 0x0 0x400>; interrupts = ; assigned-clocks = <&cru ACLK_VOP1>, <&cru HCLK_VOP1>; assigned-clock-rates = <400000000>, <100000000>; @@ -1676,7 +1676,7 @@ vopl_mmu: iommu@ff8f3f00 { vopb: vop@ff900000 { compatible = "rockchip,rk3399-vop-big"; - reg = <0x0 0xff900000 0x0 0x3efc>; + reg = <0x0 0xff900000 0x0 0x2000>, <0x0 0xff902000 0x0 0x1000>; interrupts = ; assigned-clocks = <&cru ACLK_VOP0>, <&cru HCLK_VOP0>; assigned-clock-rates = <400000000>, <100000000>;