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Sat, 21 Sep 2024 05:52:49 -0400 (EDT) From: Ryan Walklin To: Maxime Ripard , Chen-Yu Tsai , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Jernej Skrabec , Samuel Holland , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Turquette , Stephen Boyd Cc: Andre Przywara , Chris Morgan , John Watts , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, Ryan Walklin Subject: [PATCH v4 05/26] drm: sun4i: de3: Add YUV formatter module Date: Sat, 21 Sep 2024 21:45:54 +1200 Message-ID: <20240921095153.213568-6-ryan@testtoast.com> X-Mailer: git-send-email 2.46.1 In-Reply-To: <20240921095153.213568-1-ryan@testtoast.com> References: <20240921095153.213568-1-ryan@testtoast.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240921_025256_170847_A74F9E53 X-CRM114-Status: GOOD ( 15.73 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Jernej Skrabec The display engine formatter (FMT) module is present in the DE3 engine and provides YUV444 to YUV422/YUV420 conversion, format re-mapping and color depth conversion. Add support for this module. Signed-off-by: Jernej Skrabec Signed-off-by: Ryan Walklin --- drivers/gpu/drm/sun4i/Makefile | 3 +- drivers/gpu/drm/sun4i/sun50i_fmt.c | 82 ++++++++++++++++++++++++++++++ drivers/gpu/drm/sun4i/sun50i_fmt.h | 32 ++++++++++++ 3 files changed, 116 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/sun4i/sun50i_fmt.c create mode 100644 drivers/gpu/drm/sun4i/sun50i_fmt.h diff --git a/drivers/gpu/drm/sun4i/Makefile b/drivers/gpu/drm/sun4i/Makefile index bad7497a0d11e..3f516329f51ee 100644 --- a/drivers/gpu/drm/sun4i/Makefile +++ b/drivers/gpu/drm/sun4i/Makefile @@ -16,7 +16,8 @@ sun8i-drm-hdmi-y += sun8i_hdmi_phy_clk.o sun8i-mixer-y += sun8i_mixer.o sun8i_ui_layer.o \ sun8i_vi_layer.o sun8i_ui_scaler.o \ - sun8i_vi_scaler.o sun8i_csc.o + sun8i_vi_scaler.o sun8i_csc.o \ + sun50i_fmt.o sun4i-tcon-y += sun4i_crtc.o sun4i-tcon-y += sun4i_tcon_dclk.o diff --git a/drivers/gpu/drm/sun4i/sun50i_fmt.c b/drivers/gpu/drm/sun4i/sun50i_fmt.c new file mode 100644 index 0000000000000..050a8716ae862 --- /dev/null +++ b/drivers/gpu/drm/sun4i/sun50i_fmt.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) Jernej Skrabec + */ + +#include + +#include "sun50i_fmt.h" + +static bool sun50i_fmt_is_10bit(u32 format) +{ + switch (format) { + case MEDIA_BUS_FMT_RGB101010_1X30: + case MEDIA_BUS_FMT_YUV10_1X30: + case MEDIA_BUS_FMT_UYYVYY10_0_5X30: + case MEDIA_BUS_FMT_UYVY10_1X20: + return true; + default: + return false; + } +} + +static u32 sun50i_fmt_get_colorspace(u32 format) +{ + switch (format) { + case MEDIA_BUS_FMT_UYYVYY8_0_5X24: + case MEDIA_BUS_FMT_UYYVYY10_0_5X30: + return SUN50I_FMT_CS_YUV420; + case MEDIA_BUS_FMT_UYVY8_1X16: + case MEDIA_BUS_FMT_UYVY10_1X20: + return SUN50I_FMT_CS_YUV422; + default: + return SUN50I_FMT_CS_YUV444RGB; + } +} + +static void sun50i_fmt_de3_limits(u32 *limits, u32 colorspace, bool bit10) +{ + if (colorspace != SUN50I_FMT_CS_YUV444RGB) { + limits[0] = SUN50I_FMT_LIMIT(64, 940); + limits[1] = SUN50I_FMT_LIMIT(64, 960); + limits[2] = SUN50I_FMT_LIMIT(64, 960); + } else if (bit10) { + limits[0] = SUN50I_FMT_LIMIT(0, 1023); + limits[1] = SUN50I_FMT_LIMIT(0, 1023); + limits[2] = SUN50I_FMT_LIMIT(0, 1023); + } else { + limits[0] = SUN50I_FMT_LIMIT(0, 1021); + limits[1] = SUN50I_FMT_LIMIT(0, 1021); + limits[2] = SUN50I_FMT_LIMIT(0, 1021); + } +} + +void sun50i_fmt_setup(struct sun8i_mixer *mixer, u16 width, + u16 height, u32 format) +{ + u32 colorspace, limit[3], base; + struct regmap *regs; + bool bit10; + + colorspace = sun50i_fmt_get_colorspace(format); + bit10 = sun50i_fmt_is_10bit(format); + base = SUN50I_FMT_DE3; + regs = sun8i_blender_regmap(mixer); + + sun50i_fmt_de3_limits(limit, colorspace, bit10); + + regmap_write(regs, SUN50I_FMT_CTRL(base), 0); + + regmap_write(regs, SUN50I_FMT_SIZE(base), + SUN8I_MIXER_SIZE(width, height)); + regmap_write(regs, SUN50I_FMT_SWAP(base), 0); + regmap_write(regs, SUN50I_FMT_DEPTH(base), bit10); + regmap_write(regs, SUN50I_FMT_FORMAT(base), colorspace); + regmap_write(regs, SUN50I_FMT_COEF(base), 0); + + regmap_write(regs, SUN50I_FMT_LMT_Y(base), limit[0]); + regmap_write(regs, SUN50I_FMT_LMT_C0(base), limit[1]); + regmap_write(regs, SUN50I_FMT_LMT_C1(base), limit[2]); + + regmap_write(regs, SUN50I_FMT_CTRL(base), 1); +} diff --git a/drivers/gpu/drm/sun4i/sun50i_fmt.h b/drivers/gpu/drm/sun4i/sun50i_fmt.h new file mode 100644 index 0000000000000..4127f7206aade --- /dev/null +++ b/drivers/gpu/drm/sun4i/sun50i_fmt.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) Jernej Skrabec + */ + +#ifndef _SUN50I_FMT_H_ +#define _SUN50I_FMT_H_ + +#include "sun8i_mixer.h" + +#define SUN50I_FMT_DE3 0xa8000 + +#define SUN50I_FMT_CTRL(base) ((base) + 0x00) +#define SUN50I_FMT_SIZE(base) ((base) + 0x04) +#define SUN50I_FMT_SWAP(base) ((base) + 0x08) +#define SUN50I_FMT_DEPTH(base) ((base) + 0x0c) +#define SUN50I_FMT_FORMAT(base) ((base) + 0x10) +#define SUN50I_FMT_COEF(base) ((base) + 0x14) +#define SUN50I_FMT_LMT_Y(base) ((base) + 0x20) +#define SUN50I_FMT_LMT_C0(base) ((base) + 0x24) +#define SUN50I_FMT_LMT_C1(base) ((base) + 0x28) + +#define SUN50I_FMT_LIMIT(low, high) (((high) << 16) | (low)) + +#define SUN50I_FMT_CS_YUV444RGB 0 +#define SUN50I_FMT_CS_YUV422 1 +#define SUN50I_FMT_CS_YUV420 2 + +void sun50i_fmt_setup(struct sun8i_mixer *mixer, u16 width, + u16 height, u32 format); + +#endif