From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8636A3C3452 for ; Tue, 5 May 2026 06:14:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777961651; cv=none; b=nUakwY/eVha2nEIDnxC/9aVey3f9Ttf8mK89sP8vB4VHCxZSC1vGFfIVhRpOUt3mXXj9G27hvlg8etrTgaTyjop+KKtY03FA13qQWPatIJY9Ck+8l5Opfg3IvDl/zZ6NH6sEiOVvlMNnSKXCdQeJK2kK/tfI1NIFzFggEYhzyeo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777961651; c=relaxed/simple; bh=PYxtgKSXAELHBAz70Qy+Y+ia/vTiHtgmyUB2AYFAA7E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sEtN8CtoAnnlPZvJ/QuTtuifuxAtEkO++K9+CfUOy+zl+OFe1upjs8C2F6TdtabU7n84o9x0pYvOclpbZXMw1cc14sWcfJVdCJJbZN/iMSjDl0h9NnhpShcLvaddBh2ykoKEsqGc0fZD3OyBSP2XQpQx3S+Px6ElxQRV1XObmmw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Y0iuNfdo; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Y0iuNfdo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1777961648; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=JlnveO/IIIGANeTs2pk//xwrQOeAOSOEQzaSf52nLT8=; b=Y0iuNfdoVGaqNWql5Ig+Ve91izQuAEbhkc1Bn0NMtXbRN4hVJyfSjNtdtvhQWghVIIS+kp 3NsEFMptfyLaHN+pvwEKHXsGF4d3N5F/hGD4zeAZHd+wajyRu/10gX8mDP28RCjW7K/kWn 8FX1fUtJXaAGTOZLN3/+t1X/0n/VNLk= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-278-xJP_8YvNNsag9vzDeS1Aqw-1; Tue, 05 May 2026 02:14:05 -0400 X-MC-Unique: xJP_8YvNNsag9vzDeS1Aqw-1 X-Mimecast-MFC-AGG-ID: xJP_8YvNNsag9vzDeS1Aqw_1777961643 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 75D8C19560BB; Tue, 5 May 2026 06:14:03 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.67.32.119]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id A740619560A6; Tue, 5 May 2026 06:13:58 +0000 (UTC) From: Kate Hsuan To: Mauro Carvalho Chehab , Hans de Goede , Hans Verkuil , Sakari Ailus , Serin Yeh Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Kate Hsuan Subject: [PATCH v2 2/2] media: i2c: imx471: Add Sony IMX471 image sensor driver Date: Tue, 5 May 2026 14:13:27 +0800 Message-ID: <20260505061327.286700-3-hpa@redhat.com> In-Reply-To: <20260505061327.286700-1-hpa@redhat.com> References: <20260505061327.286700-1-hpa@redhat.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Add a new driver for Sony imx471 camera sensor. It is based on Jimmy Su implementation and the driver can be found in the following URL. https://github.com/intel/ipu6-drivers/commits/master/drivers/media/i2c/imx471.c This sensor can be found on Lenovo X9-14 and X9-15 laptop and it is a part of IPU7 solution. The driver was tested on Lenovo X9-14 and X9-15 laptops. Link: https://github.com/intel/ipu6-drivers/blob/master/drivers/media/i2c/imx471.c Link: https://bugzilla.redhat.com/show_bug.cgi?id=2454119 Signed-off-by: Kate Hsuan --- MAINTAINERS | 6 + drivers/media/i2c/Kconfig | 10 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/imx471.c | 992 +++++++++++++++++++++++++++++++++++++ 4 files changed, 1009 insertions(+) create mode 100644 drivers/media/i2c/imx471.c diff --git a/MAINTAINERS b/MAINTAINERS index 1126fdd639ad..d597337e7c24 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -24735,6 +24735,12 @@ T: git git://linuxtv.org/media.git F: Documentation/devicetree/bindings/media/i2c/sony,imx415.yaml F: drivers/media/i2c/imx415.c +SONY IMX471 SENSOR DRIVER +M: Kate Hsuan +L: linux-media@vger.kernel.org +S: Maintained +F: drivers/media/i2c/imx471.c + SONY MEMORYSTICK SUBSYSTEM M: Maxim Levitsky M: Alex Dubov diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 5eb1e0e0a87a..1c28c498a9f1 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -287,6 +287,16 @@ config VIDEO_IMX415 To compile this driver as a module, choose M here: the module will be called imx415. +config VIDEO_IMX471 + tristate "Sony IMX471 sensor support" + select V4L2_CCI_I2C + help + This is a Video4Linux2 sensor driver for the Sony + IMX471 camera. + + To compile this driver as a module, choose M here: the + module will be called imx471. + config VIDEO_MAX9271_LIB tristate diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index a3a6396df3c4..0539e9171030 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -61,6 +61,7 @@ obj-$(CONFIG_VIDEO_IMX335) += imx335.o obj-$(CONFIG_VIDEO_IMX355) += imx355.o obj-$(CONFIG_VIDEO_IMX412) += imx412.o obj-$(CONFIG_VIDEO_IMX415) += imx415.o +obj-$(CONFIG_VIDEO_IMX471) += imx471.o obj-$(CONFIG_VIDEO_IR_I2C) += ir-kbd-i2c.o obj-$(CONFIG_VIDEO_ISL7998X) += isl7998x.o obj-$(CONFIG_VIDEO_KS0127) += ks0127.o diff --git a/drivers/media/i2c/imx471.c b/drivers/media/i2c/imx471.c new file mode 100644 index 000000000000..e340d803ca9d --- /dev/null +++ b/drivers/media/i2c/imx471.c @@ -0,0 +1,992 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2025 Intel Corporation + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define IMX471_REG_MODE_SELECT CCI_REG8(0x0100) +#define IMX471_MODE_STANDBY 0x00 +#define IMX471_MODE_STREAMING 0x01 + +/* Chip ID */ +#define IMX471_REG_CHIP_ID CCI_REG16(0x0016) +#define IMX471_CHIP_ID 0x0471 + +/* V_TIMING internal */ +#define IMX471_REG_FLL CCI_REG16(0x0340) +#define IMX471_FLL_MAX 0xffff + +/* Exposure control */ +#define IMX471_REG_EXPOSURE CCI_REG16(0x0202) +#define IMX471_EXPOSURE_MIN 1 +#define IMX471_EXPOSURE_STEP 1 +#define IMX471_EXPOSURE_DEFAULT 0x04f6 + +/* + * the digital control register for all color control looks like: + * +-----------------+------------------+ + * | [7:0] | [15:8] | + * +-----------------+------------------+ + * | 0x020f | 0x020e | + * -------------------------------------- + * it is used to calculate the digital gain times value(integral + fractional) + * the [15:8] bits is the fractional part and [7:0] bits is the integral + * calculation equation is: + * gain value (unit: times) = REG[15:8] + REG[7:0]/0x100 + * Only value in 0x0100 ~ 0x0FFF range is allowed. + * Analog gain use 10 bits in the registers and allowed range is 0 ~ 960 + */ +/* Analog gain control */ +#define IMX471_REG_ANALOG_GAIN CCI_REG16(0x0204) +#define IMX471_ANA_GAIN_MIN 0 +#define IMX471_ANA_GAIN_MAX 960 +#define IMX471_ANA_GAIN_STEP 1 +#define IMX471_ANA_GAIN_DEFAULT 0 + +/* Digital gain control */ +#define IMX471_REG_DPGA_USE_GLOBAL_GAIN CCI_REG16(0x3ff9) +#define IMX471_REG_DIG_GAIN_GLOBAL CCI_REG16(0x020e) +#define IMX471_DGTL_GAIN_MIN 256 +#define IMX471_DGTL_GAIN_MAX 4095 +#define IMX471_DGTL_GAIN_STEP 1 +#define IMX471_DGTL_GAIN_DEFAULT 256 + +#define IMX471_VALUE_08BIT 1 + +/* HFLIP and VFLIP control */ +#define IMX471_REG_ORIENTATION CCI_REG8(0x0101) +#define IMX471_HFLIP_BIT BIT(0) +#define IMX471_VFLIP_BIT BIT(1) + +/* Default exposure margin */ +#define IMX471_EXPOSURE_MARGIN 18 + +/* Horizontal crop window offset */ +#define IMX471_REG_H_WIN_OFFSET CCI_REG8(0x0409) + +/* Vertical crop window offset */ +#define IMX471_REG_V_WIN_OFFSET CCI_REG8(0x034b) + +/* Test Pattern Control */ +#define IMX471_REG_TEST_PATTERN CCI_REG8(0x0600) +#define IMX471_TEST_PATTERN_DISABLED 0 +#define IMX471_TEST_PATTERN_SOLID_COLOR 1 +#define IMX471_TEST_PATTERN_COLOR_BARS 2 +#define IMX471_TEST_PATTERN_GRAY_COLOR_BARS 3 +#define IMX471_TEST_PATTERN_PN9 4 + +/* default link frequency and external clock */ +#define IMX471_LINK_FREQ_DEFAULT 200000000LL +#define IMX471_EXT_CLK 19200000 +#define IMX471_LINK_FREQ_INDEX 0 + +#define IMX471_NUM_SUPPLIES 1 + +#define to_imx471_data(_sd) container_of_const(_sd, \ + struct imx471_data, sd) + +static const char * const imx471_supply_name[] = { + "avdd", +}; + +/* Mode : resolution and related config&values */ +struct imx471_mode { + /* Frame width */ + u32 width; + /* Frame height */ + u32 height; + + /* V-timing */ + u32 fll_def; + u32 fll_min; + + /* H-timing */ + u32 llp; + + /* index of link frequency */ + u32 link_freq_index; + + /* Default register values */ + const struct cci_reg_sequence *default_mode_regs; + const int default_mode_regs_length; +}; + +struct imx471_data { + struct v4l2_subdev sd; + struct media_pad pad; + + struct v4l2_ctrl_handler ctrl_handler; + /* V4L2 Controls */ + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *pixel_rate; + struct v4l2_ctrl *vblank; + struct v4l2_ctrl *hblank; + struct v4l2_ctrl *vflip; + struct v4l2_ctrl *hflip; + struct v4l2_ctrl *exposure; + + struct gpio_desc *reset_gpio; + struct regulator_bulk_data supplies[IMX471_NUM_SUPPLIES]; + struct clk *img_clk; + + struct device *dev; + struct regmap *regmap; + + int streaming; + + /* True if the device has been identified */ + bool identified; +}; + +static const struct cci_reg_sequence imx471_global_regs[] = { + { CCI_REG8(0x0136), 0x13 }, + { CCI_REG8(0x0137), 0x33 }, + { CCI_REG8(0x3c7e), 0x08 }, + { CCI_REG8(0x3c7f), 0x05 }, + { CCI_REG8(0x3e35), 0x00 }, + { CCI_REG8(0x3e36), 0x00 }, + { CCI_REG8(0x3e37), 0x00 }, + { CCI_REG8(0x3f7f), 0x01 }, + { CCI_REG8(0x4431), 0x04 }, + { CCI_REG8(0x531c), 0x01 }, + { CCI_REG8(0x531d), 0x02 }, + { CCI_REG8(0x531e), 0x04 }, + { CCI_REG8(0x5928), 0x00 }, + { CCI_REG8(0x5929), 0x2f }, + { CCI_REG8(0x592a), 0x00 }, + { CCI_REG8(0x592b), 0x85 }, + { CCI_REG8(0x592c), 0x00 }, + { CCI_REG8(0x592d), 0x32 }, + { CCI_REG8(0x592e), 0x00 }, + { CCI_REG8(0x592f), 0x88 }, + { CCI_REG8(0x5930), 0x00 }, + { CCI_REG8(0x5931), 0x3d }, + { CCI_REG8(0x5932), 0x00 }, + { CCI_REG8(0x5933), 0x93 }, + { CCI_REG8(0x5938), 0x00 }, + { CCI_REG8(0x5939), 0x24 }, + { CCI_REG8(0x593a), 0x00 }, + { CCI_REG8(0x593b), 0x7a }, + { CCI_REG8(0x593c), 0x00 }, + { CCI_REG8(0x593d), 0x24 }, + { CCI_REG8(0x593e), 0x00 }, + { CCI_REG8(0x593f), 0x7a }, + { CCI_REG8(0x5940), 0x00 }, + { CCI_REG8(0x5941), 0x2f }, + { CCI_REG8(0x5942), 0x00 }, + { CCI_REG8(0x5943), 0x85 }, + { CCI_REG8(0x5f0e), 0x6e }, + { CCI_REG8(0x5f11), 0xc6 }, + { CCI_REG8(0x5f17), 0x5e }, + { CCI_REG8(0x7990), 0x01 }, + { CCI_REG8(0x7993), 0x5d }, + { CCI_REG8(0x7994), 0x5d }, + { CCI_REG8(0x7995), 0xa1 }, + { CCI_REG8(0x799a), 0x01 }, + { CCI_REG8(0x799d), 0x00 }, + { CCI_REG8(0x8169), 0x01 }, + { CCI_REG8(0x8359), 0x01 }, + { CCI_REG8(0x9302), 0x1e }, + { CCI_REG8(0x9306), 0x1f }, + { CCI_REG8(0x930a), 0x26 }, + { CCI_REG8(0x930e), 0x23 }, + { CCI_REG8(0x9312), 0x23 }, + { CCI_REG8(0x9316), 0x2c }, + { CCI_REG8(0x9317), 0x19 }, + { CCI_REG8(0xb046), 0x01 }, + { CCI_REG8(0xb048), 0x01 }, +}; + +static const struct cci_reg_sequence mode_1928x1088_regs[] = { + { CCI_REG8(0x0101), 0x00 }, + { CCI_REG8(0x0112), 0x0a }, + { CCI_REG8(0x0113), 0x0a }, + { CCI_REG8(0x0114), 0x03 }, + { CCI_REG8(0x0342), 0x0a }, + { CCI_REG8(0x0343), 0x00 }, + { CCI_REG8(0x0340), 0x13 }, + { CCI_REG8(0x0341), 0xb0 }, + { CCI_REG8(0x0344), 0x00 }, + { CCI_REG8(0x0345), 0x00 }, + { CCI_REG8(0x0346), 0x01 }, + { CCI_REG8(0x0347), 0xbc }, + { CCI_REG8(0x0348), 0x12 }, + { CCI_REG8(0x0349), 0x2f }, + { CCI_REG8(0x034a), 0x0b }, + { CCI_REG8(0x034b), 0xeb }, + { CCI_REG8(0x0381), 0x01 }, + { CCI_REG8(0x0383), 0x01 }, + { CCI_REG8(0x0385), 0x01 }, + { CCI_REG8(0x0387), 0x01 }, + { CCI_REG8(0x0900), 0x01 }, + { CCI_REG8(0x0901), 0x22 }, + { CCI_REG8(0x0902), 0x08 }, + { CCI_REG8(0x3f4c), 0x81 }, + { CCI_REG8(0x3f4d), 0x81 }, + { CCI_REG8(0x0408), 0x00 }, + { CCI_REG8(0x0409), 0xc8 }, + { CCI_REG8(0x040a), 0x00 }, + { CCI_REG8(0x040b), 0x6c }, + { CCI_REG8(0x040c), 0x07 }, + { CCI_REG8(0x040d), 0x88 }, + { CCI_REG8(0x040e), 0x04 }, + { CCI_REG8(0x040f), 0x40 }, + { CCI_REG8(0x034c), 0x07 }, + { CCI_REG8(0x034d), 0x88 }, + { CCI_REG8(0x034e), 0x04 }, + { CCI_REG8(0x034f), 0x40 }, + { CCI_REG8(0x0301), 0x06 }, + { CCI_REG8(0x0303), 0x02 }, + { CCI_REG8(0x0305), 0x02 }, + { CCI_REG8(0x0306), 0x00 }, + { CCI_REG8(0x0307), 0x79 }, + { CCI_REG8(0x030b), 0x01 }, + { CCI_REG8(0x030d), 0x02 }, + { CCI_REG8(0x030e), 0x00 }, + { CCI_REG8(0x030f), 0x53 }, + { CCI_REG8(0x0310), 0x01 }, + { CCI_REG8(0x0202), 0x13 }, + { CCI_REG8(0x0203), 0x9e }, + { CCI_REG8(0x0204), 0x00 }, + { CCI_REG8(0x0205), 0x00 }, + { CCI_REG8(0x020e), 0x01 }, + { CCI_REG8(0x020f), 0x00 }, + { CCI_REG8(0x3f78), 0x01 }, + { CCI_REG8(0x3f79), 0x31 }, + { CCI_REG8(0x3ffe), 0x00 }, + { CCI_REG8(0x3fff), 0x8a }, + { CCI_REG8(0x5f0a), 0xb6 }, +}; + +static const char * const imx471_test_pattern_menu[] = { + "Disabled", + "Solid Colour", + "Eight Vertical Colour Bars", + "Colour Bars With Fade to Grey", + "Pseudorandom Sequence (PN9)", +}; + +/* + * When adding more than the one below, make sure the disallowed ones will + * actually be disabled in the LINK_FREQ control. + */ +static const s64 link_freq_menu_items[] = { + IMX471_LINK_FREQ_DEFAULT, +}; + +/* + * The Bayer formats for the flipping. + * - no flip + * - h flip + * - v flip + * - h and v flips + */ +static const u32 imx471_mbus_formats[] = { + MEDIA_BUS_FMT_SRGGB10_1X10, + MEDIA_BUS_FMT_SGRBG10_1X10, + MEDIA_BUS_FMT_SGBRG10_1X10, + MEDIA_BUS_FMT_SBGGR10_1X10, +}; + +/* Mode configs */ +static const struct imx471_mode imx471_modes[] = { + { + .width = 1928, + .height = 1088, + .fll_def = 1308, + .fll_min = 1308, + .llp = 2328, + .link_freq_index = IMX471_LINK_FREQ_INDEX, + .default_mode_regs = mode_1928x1088_regs, + .default_mode_regs_length = ARRAY_SIZE(mode_1928x1088_regs), + }, +}; + +static int imx471_get_regulators(struct device *dev, struct imx471_data *sensor) +{ + unsigned int i; + + for (i = 0; i < IMX471_NUM_SUPPLIES; i++) + sensor->supplies[i].supply = imx471_supply_name[i]; + + return devm_regulator_bulk_get(dev, IMX471_NUM_SUPPLIES, + sensor->supplies); +} + +static int imx471_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct imx471_data *sensor = container_of(ctrl->handler, + struct imx471_data, + ctrl_handler); + struct v4l2_subdev_state *state = + v4l2_subdev_get_locked_active_state(&sensor->sd); + const struct v4l2_mbus_framefmt *format = + v4l2_subdev_state_get_format(state, 0); + s64 exposure_max; + int ret; + + /* Propagate change of current control to all related controls */ + if (ctrl->id == V4L2_CID_VBLANK) { + /* Update max exposure while meeting expected vblanking */ + exposure_max = + format->height + ctrl->val - IMX471_EXPOSURE_MARGIN; + __v4l2_ctrl_modify_range(sensor->exposure, + sensor->exposure->minimum, + exposure_max, + sensor->exposure->step, + exposure_max); + } + + /* V4L2 controls values will be applied only when power is already up */ + if (!pm_runtime_get_if_in_use(sensor->dev)) + return 0; + + switch (ctrl->id) { + case V4L2_CID_ANALOGUE_GAIN: + cci_write(sensor->regmap, IMX471_REG_ANALOG_GAIN, + ctrl->val, &ret); + break; + case V4L2_CID_DIGITAL_GAIN: + cci_write(sensor->regmap, IMX471_REG_DIG_GAIN_GLOBAL, + ctrl->val, &ret); + break; + case V4L2_CID_EXPOSURE: + cci_write(sensor->regmap, IMX471_REG_EXPOSURE, + ctrl->val, &ret); + break; + case V4L2_CID_VBLANK: + /* Update FLL that meets expected vertical blanking */ + cci_write(sensor->regmap, IMX471_REG_FLL, + format->height + ctrl->val, &ret); + break; + case V4L2_CID_TEST_PATTERN: + cci_write(sensor->regmap, IMX471_REG_TEST_PATTERN, + ctrl->val, &ret); + break; + case V4L2_CID_HFLIP: + case V4L2_CID_VFLIP: + if (sensor->streaming) + return -EBUSY; + + cci_write(sensor->regmap, IMX471_REG_ORIENTATION, + sensor->hflip->val | sensor->vflip->val << 1, &ret); + break; + default: + ret = -EINVAL; + dev_info(sensor->dev, "ctrl(id:0x%x,val:0x%x) is not handled", + ctrl->id, ctrl->val); + break; + } + + pm_runtime_put(sensor->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops imx471_ctrl_ops = { + .s_ctrl = imx471_set_ctrl, +}; + +static u32 imx471_get_format_code(struct imx471_data *seonsor) +{ + unsigned int i; + + i = (seonsor->vflip->val ? 2 : 0) | (seonsor->hflip->val ? 1 : 0); + + return imx471_mbus_formats[i]; +} + +static int imx471_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct imx471_data *sensor = to_imx471_data(sd); + + if (code->index >= (ARRAY_SIZE(imx471_mbus_formats) / 4)) + return -EINVAL; + + code->code = imx471_get_format_code(sensor); + + return 0; +} +static int imx471_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_size_enum *fse) +{ + if (fse->index >= ARRAY_SIZE(imx471_modes)) + return -EINVAL; + + fse->min_width = imx471_modes[fse->index].width; + fse->max_width = fse->min_width; + fse->min_height = imx471_modes[fse->index].height; + fse->max_height = fse->min_height; + + return 0; +} + +static void imx471_update_pad_format(struct imx471_data *sensor, + const struct imx471_mode *mode, + struct v4l2_subdev_format *fmt) +{ + fmt->format.code = imx471_get_format_code(sensor); + fmt->format.width = mode->width; + fmt->format.height = mode->height; + fmt->format.field = V4L2_FIELD_NONE; +} + +static int imx471_set_pad_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct imx471_data *sensor = to_imx471_data(sd); + const struct imx471_mode *mode; + + mode = v4l2_find_nearest_size(imx471_modes, + ARRAY_SIZE(imx471_modes), + width, height, + fmt->format.width, fmt->format.height); + + imx471_update_pad_format(sensor, mode, fmt); + + *v4l2_subdev_state_get_format(sd_state, fmt->pad) = fmt->format; + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) + return 0; + + if (media_entity_is_streaming(&sensor->sd.entity)) + return -EBUSY; + + if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { + int h_blank; + u64 pixel_rate; + + pixel_rate = IMX471_LINK_FREQ_DEFAULT * 2 * 4; + do_div(pixel_rate, 10); + __v4l2_ctrl_modify_range(sensor->pixel_rate, + V4L2_CID_PIXEL_RATE, + pixel_rate, 1, pixel_rate); + + __v4l2_ctrl_modify_range(sensor->vblank, + mode->fll_min - mode->height, + IMX471_FLL_MAX - mode->height, + 1, + mode->fll_def - mode->height); + + h_blank = mode->llp - mode->width; + /* + * Currently hblank is not changeable. + * So FPS control is done only by vblank. + */ + __v4l2_ctrl_modify_range(sensor->hblank, h_blank, + h_blank, 1, h_blank); + } + + return 0; +} + +static int imx471_init_state(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state) +{ + struct v4l2_subdev_format fmt = { }; + + fmt.which = + sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; + fmt.format.code = MEDIA_BUS_FMT_SRGGB10_1X10; + fmt.format.width = imx471_modes[0].width; + fmt.format.height = imx471_modes[0].height; + + imx471_set_pad_format(sd, sd_state, &fmt); + + return 0; +} + +static int imx471_identify_module(struct imx471_data *sensor) +{ + int ret; + u64 val; + + if (sensor->identified) + return 0; + + ret = cci_read(sensor->regmap, IMX471_REG_CHIP_ID, &val, NULL); + if (ret) + return dev_err_probe(sensor->dev, ret, + "failed to read chip id\n"); + + if (val != IMX471_CHIP_ID) + return dev_err_probe(sensor->dev, -EIO, + "chip id mismatch: %x!=%llx\n", + IMX471_CHIP_ID, val); + + sensor->identified = true; + + return 0; +} + +static int imx471_power_off(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct imx471_data *sensor = to_imx471_data(sd); + + clk_disable_unprepare(sensor->img_clk); + gpiod_set_value_cansleep(sensor->reset_gpio, 1); + + regulator_bulk_disable(IMX471_NUM_SUPPLIES, sensor->supplies); + + return 0; +} + +static int imx471_power_on(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct imx471_data *sensor = to_imx471_data(sd); + int ret; + + ret = regulator_bulk_enable(IMX471_NUM_SUPPLIES, sensor->supplies); + if (ret < 0) { + dev_err(dev, "failed to enable regulators: %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(sensor->img_clk); + if (ret < 0) { + regulator_bulk_disable(IMX471_NUM_SUPPLIES, sensor->supplies); + dev_err(dev, "failed to enable imaging clock: %d", ret); + return ret; + } + + gpiod_set_value_cansleep(sensor->reset_gpio, 0); + + usleep_range(10000, 15000); + + return 0; +} + +/* Start streaming */ +static int imx471_enable_stream(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + u32 pad, u64 streams_mask) +{ + struct imx471_data *sensor = to_imx471_data(sd); + const struct imx471_mode *mode; + struct v4l2_mbus_framefmt *fmt; + int ret; + + ret = pm_runtime_resume_and_get(sensor->dev); + if (ret) + goto error_powerdown; + + ret = imx471_identify_module(sensor); + if (ret) + return ret; + + /* Global Setting */ + cci_multi_reg_write(sensor->regmap, imx471_global_regs, + ARRAY_SIZE(imx471_global_regs), &ret); + if (ret) { + dev_err(sensor->dev, "failed to set global settings"); + goto error_powerdown; + } + + state = v4l2_subdev_get_locked_active_state(&sensor->sd); + fmt = v4l2_subdev_state_get_format(state, 0); + mode = v4l2_find_nearest_size(imx471_modes, ARRAY_SIZE(imx471_modes), + width, height, fmt->width, fmt->height); + + /* Apply default values of current mode */ + cci_multi_reg_write(sensor->regmap, mode->default_mode_regs, + mode->default_mode_regs_length, &ret); + if (ret) { + dev_err(sensor->dev, "failed to set mode"); + goto error_powerdown; + } + + /* set digital gain control to all color mode */ + cci_write(sensor->regmap, IMX471_REG_DPGA_USE_GLOBAL_GAIN, 1, &ret); + if (ret) + goto error_powerdown; + + /* Apply customized values from user */ + ret = __v4l2_ctrl_handler_setup(&sensor->ctrl_handler); + if (ret) + goto error_powerdown; + + cci_write(sensor->regmap, IMX471_REG_MODE_SELECT, + IMX471_MODE_STREAMING, &ret); + if (ret) + goto error_powerdown; + + sensor->streaming = 1; + + return ret; + +error_powerdown: + pm_runtime_put(sensor->dev); + + return ret; +} + +/* Stop streaming */ +static int imx471_disable_stream(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + u32 pad, u64 streams_mask) +{ + struct imx471_data *sensor = to_imx471_data(sd); + int ret; + + cci_write(sensor->regmap, IMX471_REG_MODE_SELECT, + IMX471_MODE_STANDBY, &ret); + pm_runtime_put(sensor->dev); + sensor->streaming = 0; + + if (ret) + dev_err(sensor->dev, + "failed to disable stream with return value: %d\n", + ret); + + return 0; +} + +static const struct v4l2_subdev_core_ops imx471_subdev_core_ops = { + .subscribe_event = v4l2_ctrl_subdev_subscribe_event, + .unsubscribe_event = v4l2_event_subdev_unsubscribe, +}; + +static const struct v4l2_subdev_video_ops imx471_video_ops = { + .s_stream = v4l2_subdev_s_stream_helper, +}; + +static const struct v4l2_subdev_pad_ops imx471_pad_ops = { + .enum_mbus_code = imx471_enum_mbus_code, + .get_fmt = v4l2_subdev_get_fmt, + .set_fmt = imx471_set_pad_format, + .enum_frame_size = imx471_enum_frame_size, + .enable_streams = imx471_enable_stream, + .disable_streams = imx471_disable_stream, +}; + +static const struct v4l2_subdev_ops imx471_subdev_ops = { + .core = &imx471_subdev_core_ops, + .video = &imx471_video_ops, + .pad = &imx471_pad_ops, +}; + +static const struct v4l2_subdev_internal_ops imx471_internal_ops = { + .init_state = imx471_init_state, +}; + +/* Initialize control handlers */ +static int imx471_init_controls(struct imx471_data *sensor) +{ + const struct imx471_mode *mode = &imx471_modes[0]; + struct v4l2_ctrl_handler *ctrl_hdlr; + struct v4l2_fwnode_device_properties props; + s64 exposure_max; + s64 hblank; + u64 pixel_rate; + int ret; + + + ctrl_hdlr = &sensor->ctrl_handler; + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10); + if (ret) + return ret; + + ret = v4l2_fwnode_device_parse(sensor->dev, &props); + if (ret) { + dev_err(sensor->dev, "failed to parse fwnode: %d", ret); + return ret; + } + + v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx471_ctrl_ops, &props); + if (ctrl_hdlr->error) + return ctrl_hdlr->error; + + sensor->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, + &imx471_ctrl_ops, + V4L2_CID_LINK_FREQ, + ARRAY_SIZE(link_freq_menu_items) - 1, + 0, + link_freq_menu_items); + if (sensor->link_freq) + sensor->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + /* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */ + pixel_rate = IMX471_LINK_FREQ_DEFAULT * 2 * 4; + do_div(pixel_rate, 10); + /* By default, PIXEL_RATE is read only */ + sensor->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx471_ctrl_ops, + V4L2_CID_PIXEL_RATE, pixel_rate, + pixel_rate, 1, pixel_rate); + + /* Initial vblank/hblank/exposure parameters based on current mode */ + sensor->vblank = v4l2_ctrl_new_std(ctrl_hdlr, + &imx471_ctrl_ops, + V4L2_CID_VBLANK, + mode->fll_min - mode->height, + IMX471_FLL_MAX - mode->height, + 1, + mode->fll_def - mode->height); + + hblank = mode->llp - mode->width; + sensor->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx471_ctrl_ops, + V4L2_CID_HBLANK, hblank, hblank, + 1, hblank); + if (sensor->hblank) + sensor->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + /* fll >= exposure time + adjust parameter (default value is 18) */ + exposure_max = mode->fll_def - IMX471_EXPOSURE_MARGIN; + sensor->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx471_ctrl_ops, + V4L2_CID_EXPOSURE, + IMX471_EXPOSURE_MIN, exposure_max, + IMX471_EXPOSURE_STEP, + IMX471_EXPOSURE_DEFAULT); + + v4l2_ctrl_new_std(ctrl_hdlr, &imx471_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, + IMX471_ANA_GAIN_MIN, IMX471_ANA_GAIN_MAX, + IMX471_ANA_GAIN_STEP, IMX471_ANA_GAIN_DEFAULT); + + /* Digital gain */ + v4l2_ctrl_new_std(ctrl_hdlr, &imx471_ctrl_ops, V4L2_CID_DIGITAL_GAIN, + IMX471_DGTL_GAIN_MIN, IMX471_DGTL_GAIN_MAX, + IMX471_DGTL_GAIN_STEP, IMX471_DGTL_GAIN_DEFAULT); + + v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx471_ctrl_ops, + V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(imx471_test_pattern_menu) - 1, + 0, 0, imx471_test_pattern_menu); + + /* HFLIP & VFLIP */ + sensor->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx471_ctrl_ops, + V4L2_CID_HFLIP, 0, 1, 1, 0); + + sensor->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx471_ctrl_ops, + V4L2_CID_VFLIP, 0, 1, 1, 0); + + sensor->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; + sensor->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; + + if (ctrl_hdlr->error) { + ret = ctrl_hdlr->error; + dev_err(sensor->dev, "%s control init failed: %d", + __func__, ret); + goto error; + } + + sensor->sd.ctrl_handler = ctrl_hdlr; + + return 0; + +error: + v4l2_ctrl_handler_free(ctrl_hdlr); + + return ret; +} + +static int imx471_check_hwcfg(struct imx471_data *sensor) +{ + struct v4l2_fwnode_endpoint bus_cfg = { + .bus_type = V4L2_MBUS_CSI2_DPHY, + }; + struct fwnode_handle *ep, *fwnode = dev_fwnode(sensor->dev); + struct clk *clk; + unsigned long link_freq_bitmap; + int ret; + + clk = devm_v4l2_sensor_clk_get(sensor->dev, NULL); + if (IS_ERR(clk)) + return dev_err_probe(sensor->dev, ret, + "can't get clock frequency\n"); + + if (clk_get_rate(clk) != IMX471_EXT_CLK) + return dev_err_probe(sensor->dev, -EINVAL, + "external clock %lu is not supported\n", + clk_get_rate(clk)); + + ep = fwnode_graph_get_endpoint_by_id(fwnode, 0, 0, 0); + ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); + fwnode_handle_put(ep); + if (ret) + return dev_err_probe(sensor->dev, ret, + "parsing endpoint failed"); + + ret = v4l2_link_freq_to_bitmap(sensor->dev, bus_cfg.link_frequencies, + bus_cfg.nr_of_link_frequencies, + link_freq_menu_items, + ARRAY_SIZE(link_freq_menu_items), + &link_freq_bitmap); + + if (ret == -ENOENT) + goto error_endpoint_free; + + if (ret == -ENODATA) + goto error_endpoint_free; + +error_endpoint_free: + v4l2_fwnode_endpoint_free(&bus_cfg); + + return ret; +} + +static int imx471_probe(struct i2c_client *client) +{ + struct imx471_data *sensor; + int ret; + + sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL); + if (!sensor) + return dev_err_probe(&client->dev, -ENOMEM, + "failed to allocate memory\n"); + + sensor->dev = &client->dev; + + /* Check HW config */ + ret = imx471_check_hwcfg(sensor); + if (ret) + return dev_err_probe(sensor->dev, ret, + "failed to check hwcfg: %d\n", ret); + + ret = imx471_get_regulators(sensor->dev, sensor); + if (ret) + return dev_err_probe(sensor->dev, ret, + "failed to get regulators\n"); + + sensor->reset_gpio = devm_gpiod_get_optional(sensor->dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(sensor->reset_gpio)) + return dev_err_probe(sensor->dev, PTR_ERR(sensor->reset_gpio), + "failed to get reset gpio\n"); + + sensor->img_clk = devm_clk_get_optional(sensor->dev, NULL); + if (IS_ERR(sensor->img_clk)) + return dev_err_probe(sensor->dev, PTR_ERR(sensor->img_clk), + "failed to get imaging clock\n"); + + /* Initialize subdev */ + v4l2_i2c_subdev_init(&sensor->sd, client, &imx471_subdev_ops); + + /* Initialize regmap */ + sensor->regmap = devm_cci_regmap_init_i2c(client, 16); + if (IS_ERR(sensor->regmap)) + return PTR_ERR(sensor->regmap); + + ret = imx471_power_on(sensor->dev); + if (ret) + return dev_err_probe(sensor->dev, ret, + "failed to power on\n"); + + /* Check module identity */ + ret = imx471_identify_module(sensor); + if (ret) { + dev_err(&client->dev, "failed to find sensor: %d", ret); + goto error_power_off; + } + + ret = imx471_init_controls(sensor); + if (ret) { + dev_err(sensor->dev, "failed to init controls: %d", ret); + goto error_power_off; + } + + /* Initialize subdev */ + sensor->sd.internal_ops = &imx471_internal_ops; + sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | + V4L2_SUBDEV_FL_HAS_EVENTS; + sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + + /* Initialize source pad */ + sensor->pad.flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad); + if (ret) { + dev_err(&client->dev, "failed to init entity pads: %d", ret); + goto error_v4l2_ctrl_handler_free; + } + + sensor->sd.state_lock = sensor->ctrl_handler.lock; + ret = v4l2_subdev_init_finalize(&sensor->sd); + if (ret < 0) { + dev_err(&client->dev, "failed to init subdev: %d", ret); + goto error_media_entity_pm; + } + + pm_runtime_set_active(sensor->dev); + pm_runtime_enable(sensor->dev); + pm_runtime_idle(sensor->dev); + + ret = v4l2_async_register_subdev_sensor(&sensor->sd); + if (ret < 0) + goto error_v4l2_subdev_cleanup; + + return 0; + +error_v4l2_subdev_cleanup: + pm_runtime_disable(sensor->dev); + pm_runtime_set_suspended(sensor->dev); + v4l2_subdev_cleanup(&sensor->sd); + +error_media_entity_pm: + media_entity_cleanup(&sensor->sd.entity); + +error_v4l2_ctrl_handler_free: + v4l2_ctrl_handler_free(sensor->sd.ctrl_handler); + +error_power_off: + imx471_power_off(sensor->dev); + + return ret; +} + +static void imx471_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx471_data *sensor = to_imx471_data(sd); + + v4l2_async_unregister_subdev(sd); + v4l2_subdev_cleanup(sd); + media_entity_cleanup(&sd->entity); + v4l2_ctrl_handler_free(sd->ctrl_handler); + + pm_runtime_disable(&client->dev); + + if (!pm_runtime_status_suspended(sensor->dev)) { + imx471_power_off(sensor->dev); + pm_runtime_set_suspended(sensor->dev); + } +} + +static DEFINE_RUNTIME_DEV_PM_OPS(imx471_pm_ops, imx471_power_off, + imx471_power_on, NULL); + +static const struct acpi_device_id imx471_acpi_ids[] __maybe_unused = { + { "SONY471A" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(acpi, imx471_acpi_ids); + +static struct i2c_driver imx471_i2c_driver = { + .driver = { + .name = "imx471", + .acpi_match_table = ACPI_PTR(imx471_acpi_ids), + .pm = pm_sleep_ptr(&imx471_pm_ops), + }, + .probe = imx471_probe, + .remove = imx471_remove, +}; +module_i2c_driver(imx471_i2c_driver); + +MODULE_AUTHOR("Jimmy Su "); +MODULE_AUTHOR("Serin Yeh "); +MODULE_AUTHOR("Kate Hsuan "); +MODULE_DESCRIPTION("Sony imx471 sensor driver"); +MODULE_LICENSE("GPL"); -- 2.54.0