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Tue, 21 May 2024 18:30:23 +0200 From: Sylvain Petinot To: , , , , , CC: , , Subject: [PATCH v2 1/2] media: dt-bindings: Add ST VD56G3 camera sensor binding Date: Tue, 21 May 2024 18:29:49 +0200 Message-ID: <20240521162950.6987-2-sylvain.petinot@foss.st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240521162950.6987-1-sylvain.petinot@foss.st.com> References: <20240521162950.6987-1-sylvain.petinot@foss.st.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: EQNCAS1NODE4.st.com (10.75.129.82) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.650,FMLib:17.12.28.16 definitions=2024-05-21_10,2024-05-21_01,2024-05-17_01 X-LSpam-Score: -2.6 (--) X-LSpam-Report: No, score=-2.6 required=5.0 tests=ARC_SIGNED=0.001,ARC_VALID=-0.1,BAYES_00=-1.9,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,DMARC_PASS=-0.001,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,SPF_HELO_NONE=0.001,SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no Add devicetree bindings Documentation for ST VD56G3 & ST VD66GY camera sensors. Update MAINTAINERS file. Signed-off-by: Sylvain Petinot --- .../bindings/media/i2c/st,st-vd56g3.yaml | 132 ++++++++++++++++++ MAINTAINERS | 9 ++ 2 files changed, 141 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/st,st-vd56g3.yaml diff --git a/Documentation/devicetree/bindings/media/i2c/st,st-vd56g3.yaml b/Documentation/devicetree/bindings/media/i2c/st,st-vd56g3.yaml new file mode 100644 index 000000000000..22cb2557e311 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/st,st-vd56g3.yaml @@ -0,0 +1,132 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright (c) 2024 STMicroelectronics SA. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/st,st-vd56g3.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STMicroelectronics VD56G3 Global Shutter Image Sensor + +maintainers: + - Benjamin Mugnier + - Sylvain Petinot + +description: |- + The STMicroelectronics VD56G3 is a 1.5 M pixel global shutter image sensor + with an active array size of 1124 x 1364 (portrait orientation). It is + programmable through I2C, the address is fixed to 0x10. The sensor output is + available via CSI-2, which is configured as either 1 or 2 data lanes. The + sensor provides 8 GPIOS that can be used for external LED signal + (synchronized with sensor integration periods) + +properties: + compatible: + enum: + - st,st-vd56g3 + - st,st-vd66gy + description: + Two variants are availables; VD56G3 is a monochrome sensor while VD66GY + is a colour variant. + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + vcore-supply: + description: Digital core power supply (1.15V) + + vddio-supply: + description: Digital IO power supply (1.8V) + + vana-supply: + description: Analog power supply (2.8V) + + reset-gpios: + description: Sensor reset active low GPIO (XSHUTDOWN) + maxItems: 1 + + st,leds: + description: + Sensor's GPIOs used for external LED control. Signal being the enveloppe + of the integration time. + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 1 + maxItems: 8 + items: + minimum: 0 + maximum: 7 + + port: + $ref: /schemas/graph.yaml#/$defs/port-base + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + data-lanes: + minItems: 1 + maxItems: 2 + items: + enum: [1, 2] + + link-frequencies: + minItems: 1 + maxItems: 1 + items: + enum: [402000000, 750000000] + + lane-polarities: + minItems: 1 + maxItems: 3 + description: Any lane can be inverted or not. + + required: + - data-lanes + - link-frequencies + +required: + - compatible + - reg + - clocks + - vcore-supply + - vddio-supply + - vana-supply + - reset-gpios + - port + +additionalProperties: false + +examples: + - | + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + camera-sensor@10 { + compatible = "st,st-vd56g3"; + reg = <0x10>; + + clocks = <&camera_clk_12M>; + + vcore-supply = <&camera_vcore_v1v15>; + vddio-supply = <&camera_vddio_v1v8>; + vana-supply = <&camera_vana_v2v8>; + + reset-gpios = <&gpio 5 GPIO_ACTIVE_LOW>; + st,leds = <6>; + + port { + endpoint { + data-lanes = <1 2>; + link-frequencies = /bits/ 64 <402000000>; + remote-endpoint = <&csiphy0_ep>; + }; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index ef6be9d95143..554e6861425b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20885,6 +20885,15 @@ S: Maintained F: Documentation/hwmon/stpddc60.rst F: drivers/hwmon/pmbus/stpddc60.c +ST VD56G3 DRIVER +M: Benjamin Mugnier +M: Sylvain Petinot +L: linux-media@vger.kernel.org +S: Maintained +T: git git://linuxtv.org/media_tree.git +F: Documentation/devicetree/bindings/media/i2c/st,st-vd56g3.yaml +F: drivers/media/i2c/st-vd56g3.c + ST VGXY61 DRIVER M: Benjamin Mugnier M: Sylvain Petinot From patchwork Tue May 21 16:29:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sylvain Petinot X-Patchwork-Id: 101842 X-Patchwork-Delegate: sakari.ailus@iki.fi Received: from sv.mirrors.kernel.org ([139.178.88.99]) by linuxtv.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1s9SOu-000481-39 for patchwork@linuxtv.org; 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Tue, 21 May 2024 18:30:57 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 71F7340046; Tue, 21 May 2024 18:30:53 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 3492A226FDB; Tue, 21 May 2024 18:30:24 +0200 (CEST) Received: from localhost (10.130.72.242) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 21 May 2024 18:30:23 +0200 From: Sylvain Petinot To: , , , , , CC: , , Subject: [PATCH v2 2/2] media: i2c: Add driver for ST VD56G3 camera sensor Date: Tue, 21 May 2024 18:29:50 +0200 Message-ID: <20240521162950.6987-3-sylvain.petinot@foss.st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240521162950.6987-1-sylvain.petinot@foss.st.com> References: <20240521162950.6987-1-sylvain.petinot@foss.st.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: EQNCAS1NODE4.st.com (10.75.129.82) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.650,FMLib:17.12.28.16 definitions=2024-05-21_10,2024-05-21_01,2024-05-17_01 X-LSpam-Score: -4.9 (----) X-LSpam-Report: No, score=-4.9 required=5.0 tests=ARC_SIGNED=0.001,ARC_VALID=-0.1,BAYES_00=-1.9,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,DMARC_PASS=-0.001,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,RCVD_IN_DNSWL_MED=-2.3,SPF_HELO_NONE=0.001,SPF_PASS=-0.001,T_PDS_OTHER_BAD_TLD=0.01 autolearn=ham autolearn_force=no Add V4L2 sub-device driver for STMicroelectronics VD56G3 camera sensor. This is a 1.5 M pixel global shutter image sensor with an active array size of 1124 x 1364 (portrait orientation). The driver supports Mono (VD56G3) and Color (VD66GY) variants. Signed-off-by: Sylvain Petinot --- drivers/media/i2c/Kconfig | 11 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/st-vd56g3.c | 1608 +++++++++++++++++++++++++++++++++ 3 files changed, 1620 insertions(+) create mode 100644 drivers/media/i2c/st-vd56g3.c diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index c6d3ee472d81..c3d3cbdfcb3b 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -659,6 +659,17 @@ config VIDEO_S5K6A3 This is a V4L2 sensor driver for Samsung S5K6A3 raw camera sensor. +config VIDEO_ST_VD56G3 + tristate "ST VD56G3 sensor support" + select V4L2_CCI_I2C + depends on OF && GPIOLIB + help + This is a Video4Linux2 sensor driver for the ST VD56G3 + camera sensor. + + To compile this driver as a module, choose M here: the + module will be called st-vd56g3. + config VIDEO_ST_VGXY61 tristate "ST VGXY61 sensor support" select V4L2_CCI_I2C diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index dfbe6448b549..b469cf0f8113 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -124,6 +124,7 @@ obj-$(CONFIG_VIDEO_SAA717X) += saa717x.o obj-$(CONFIG_VIDEO_SAA7185) += saa7185.o obj-$(CONFIG_VIDEO_SONY_BTF_MPX) += sony-btf-mpx.o obj-$(CONFIG_VIDEO_ST_MIPID02) += st-mipid02.o +obj-$(CONFIG_VIDEO_ST_VD56G3) += st-vd56g3.o obj-$(CONFIG_VIDEO_ST_VGXY61) += st-vgxy61.o obj-$(CONFIG_VIDEO_TC358743) += tc358743.o obj-$(CONFIG_VIDEO_TC358746) += tc358746.o diff --git a/drivers/media/i2c/st-vd56g3.c b/drivers/media/i2c/st-vd56g3.c new file mode 100644 index 000000000000..1e4329502230 --- /dev/null +++ b/drivers/media/i2c/st-vd56g3.c @@ -0,0 +1,1608 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * A V4L2 driver for ST VD56G3 (Mono) and VD66GY (RGB) global shutter cameras. + * Copyright (C) 2024, STMicroelectronics SA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +/* Register Map */ +#define VD56G3_REG_MODEL_ID CCI_REG16_LE(0x0000) +#define VD56G3_MODEL_ID 0x5603 +#define VD56G3_REG_REVISION CCI_REG16_LE(0x0002) +#define VD56G3_REVISION_CUT3 0x31 +#define VD56G3_REG_OPTICAL_REVISION CCI_REG8(0x001a) +#define VD56G3_OPTICAL_REVISION_MONO 0 +#define VD56G3_OPTICAL_REVISION_BAYER 1 +#define VD56G3_REG_SYSTEM_FSM CCI_REG8(0x0028) +#define VD56G3_SYSTEM_FSM_READY_TO_BOOT 0x01 +#define VD56G3_SYSTEM_FSM_SW_STBY 0x02 +#define VD56G3_SYSTEM_FSM_STREAMING 0x03 +#define VD56G3_REG_APPLIED_COARSE_EXPOSURE CCI_REG16_LE(0x0064) +#define VD56G3_REG_APPLIED_ANALOG_GAIN CCI_REG8(0x0068) +#define VD56G3_REG_APPLIED_DIGITAL_GAIN CCI_REG16_LE(0x006a) +#define VD56G3_REG_BOOT CCI_REG8(0x0200) +#define VD56G3_CMD_ACK 0 +#define VD56G3_CMD_BOOT 1 +#define VD56G3_REG_STBY CCI_REG8(0x0201) +#define VD56G3_CMD_START_STREAM 1 +#define VD56G3_REG_STREAMING CCI_REG8(0x0202) +#define VD56G3_CMD_STOP_STREAM 1 +#define VD56G3_REG_EXT_CLOCK CCI_REG32_LE(0x0220) +#define VD56G3_REG_CLK_PLL_PREDIV CCI_REG8(0x0224) +#define VD56G3_REG_CLK_SYS_PLL_MULT CCI_REG8(0x0226) +#define VD56G3_REG_ORIENTATION CCI_REG8(0x0302) +#define VD56G3_REG_FORMAT_CTRL CCI_REG8(0x030a) +#define VD56G3_REG_OIF_CTRL CCI_REG16_LE(0x030c) +#define VD56G3_REG_OIF_IMG_CTRL CCI_REG8(0x030f) +#define VD56G3_REG_OIF_CSI_BITRATE CCI_REG16_LE(0x0312) +#define VD56G3_REG_DUSTER_CTRL CCI_REG8(0x0318) +#define VD56G3_DUSTER_DISABLE 0 +#define VD56G3_DUSTER_ENABLE_DEF_MODULES 0x13 +#define VD56G3_REG_ISL_ENABLE CCI_REG8(0x0333) +#define VD56G3_REG_DARKCAL_CTRL CCI_REG8(0x0340) +#define VD56G3_DARKCAL_ENABLE 1 +#define VD56G3_DARKCAL_DISABLE_DARKAVG 2 +#define VD56G3_REG_PATGEN_CTRL CCI_REG16_LE(0x0400) +#define VD56G3_PATGEN_ENABLE 1 +#define VD56G3_PATGEN_TYPE_SHIFT 4 +#define VD56G3_REG_AE_COLDSTART_COARSE_EXPOSURE CCI_REG16_LE(0x042a) +#define VD56G3_REG_AE_COLDSTART_ANALOG_GAIN CCI_REG8(0x042c) +#define VD56G3_REG_AE_COLDSTART_DIGITAL_GAIN CCI_REG16_LE(0x042e) +#define VD56G3_REG_AE_ROI_START_H CCI_REG16_LE(0x0432) +#define VD56G3_REG_AE_ROI_START_V CCI_REG16_LE(0x0434) +#define VD56G3_REG_AE_ROI_END_H CCI_REG16_LE(0x0436) +#define VD56G3_REG_AE_ROI_END_V CCI_REG16_LE(0x0438) +#define VD56G3_REG_AE_COMPENSATION CCI_REG16_LE(0x043a) +#define VD56G3_REG_EXP_MODE CCI_REG8(0x044c) +#define VD56G3_EXP_MODE_AUTO 0 +#define VD56G3_EXP_MODE_FREEZE 1 +#define VD56G3_EXP_MODE_MANUAL 2 +#define VD56G3_REG_MANUAL_ANALOG_GAIN CCI_REG8(0x044d) +#define VD56G3_REG_MANUAL_COARSE_EXPOSURE CCI_REG16_LE(0x044e) +#define VD56G3_REG_MANUAL_DIGITAL_GAIN_CH0 CCI_REG16_LE(0x0450) +#define VD56G3_REG_MANUAL_DIGITAL_GAIN_CH1 CCI_REG16_LE(0x0452) +#define VD56G3_REG_MANUAL_DIGITAL_GAIN_CH2 CCI_REG16_LE(0x0454) +#define VD56G3_REG_MANUAL_DIGITAL_GAIN_CH3 CCI_REG16_LE(0x0456) +#define VD56G3_REG_FRAME_LENGTH CCI_REG16_LE(0x0458) +#define VD56G3_REG_Y_START CCI_REG16_LE(0x045a) +#define VD56G3_REG_Y_END CCI_REG16_LE(0x045c) +#define VD56G3_REG_OUT_ROI_X_START CCI_REG16_LE(0x045e) +#define VD56G3_REG_OUT_ROI_X_END CCI_REG16_LE(0x0460) +#define VD56G3_REG_OUT_ROI_Y_START CCI_REG16_LE(0x0462) +#define VD56G3_REG_OUT_ROI_Y_END CCI_REG16_LE(0x0464) +#define VD56G3_REG_GPIO_0_CTRL CCI_REG8(0x0467) +#define VD56G3_GPIOX_GPIO_IN 0x01 +#define VD56G3_GPIOX_STROBE_MODE 0x02 +#define VD56G3_REG_READOUT_CTRL CCI_REG8(0x047e) +#define READOUT_NORMAL 0x00 +#define READOUT_DIGITAL_BINNING_X2 0x01 + +/* + * The VD56G3 pixel array is organized as follows: + * + * +--------------------------------+ + * | | \ + * | +------------------------+ | | + * | | | | | + * | | | | | + * | | | | | + * | | | | | + * | | | | | + * | | Default resolution | | | Native height (1364) + * | | 1120 x 1360 | | | + * | | | | | + * | | | | | + * | | | | | + * | | | | | + * | +------------------------+ | | + * | | / + * +--------------------------------+ + * <-----------------------------> + * \------------------- Native width (1124) + * + * The native resolution is 1124x1364. + * The recommended/default resolution is 1120x1360 (multiple of 16). + */ +#define VD56G3_NATIVE_WIDTH 1124 +#define VD56G3_NATIVE_HEIGHT 1364 +#define VD56G3_DEFAULT_WIDTH 1120 +#define VD56G3_DEFAULT_HEIGHT 1360 +#define VD56G3_DEFAULT_MODE 1 + +/* PLL settings */ +#define VD56G3_TARGET_PLL 804000000UL +#define VD56G3_VT_CLOCK_DIV 5 + +/* Line length and Frame length (settings are for standard 10bits ADC mode) */ +#define VD56G3_LINE_LENGTH_MIN 1236 +#define VD56G3_VBLANK_MIN 110 +#define VD56G3_FRAME_LENGTH_DEF_60FPS 2168 + +/* Exposure settings */ +#define VD56G3_EXPOSURE_MARGIN 75 +#define VD56G3_EXPOSURE_DEFAULT 1420 + +/* Output Interface settings */ +#define VD56G3_MAX_CSI_DATA_LANES 2 +#define VD56G3_LINK_FREQ_DEF_1LANE 750000000UL +#define VD56G3_LINK_FREQ_DEF_2LANES 402000000UL + +/* GPIOs */ +#define VD56G3_NB_GPIOS 8 + +/* regulator supplies */ +static const char *const vd56g3_supply_names[] = { + "vcore", + "vddio", + "vana", +}; + +/* ----------------------------------------------------------------------------- + * Models (VD56G3: Mono, VD66GY: Bayer RGB), Modes and formats + */ + +enum vd56g3_models { + VD56G3_MODEL_VD56G3, + VD56G3_MODEL_VD66GY, +}; + +struct vd56g3_mode { + u32 width; + u32 height; +}; + +static const struct vd56g3_mode vd56g3_supported_modes[] = { + { + .width = VD56G3_NATIVE_WIDTH, + .height = VD56G3_NATIVE_HEIGHT, + }, + { + .width = VD56G3_DEFAULT_WIDTH, + .height = VD56G3_DEFAULT_HEIGHT, + }, + { + .width = 1024, + .height = 1280, + }, + { + .width = 1024, + .height = 768, + }, + { + .width = 768, + .height = 1024, + }, + { + .width = 720, + .height = 1280, + }, + { + .width = 640, + .height = 480, + }, + { + .width = 480, + .height = 640, + }, + { + .width = 320, + .height = 240, + }, +}; + +/* + * Sensor support 8bits and 10bits output in both variants + * - Monochrome + * - RGB (with all H/V flip variations) + */ +static const unsigned int vd56g3_mbus_codes[2][5] = { + { + MEDIA_BUS_FMT_Y8_1X8, + MEDIA_BUS_FMT_SGRBG8_1X8, + MEDIA_BUS_FMT_SRGGB8_1X8, + MEDIA_BUS_FMT_SBGGR8_1X8, + MEDIA_BUS_FMT_SGBRG8_1X8, + }, + { + MEDIA_BUS_FMT_Y10_1X10, + MEDIA_BUS_FMT_SGRBG10_1X10, + MEDIA_BUS_FMT_SRGGB10_1X10, + MEDIA_BUS_FMT_SBGGR10_1X10, + MEDIA_BUS_FMT_SGBRG10_1X10, + }, +}; + +enum vd56g3_expo_state { + VD56G3_EXPO_AUTO, + VD56G3_EXPO_AUTO_FREEZE, + VD56G3_EXPO_MANUAL +}; + +struct vd56g3 { + struct i2c_client *i2c_client; + struct v4l2_subdev sd; + struct media_pad pad; + struct regulator_bulk_data supplies[ARRAY_SIZE(vd56g3_supply_names)]; + struct gpio_desc *reset_gpio; + struct clk *xclk; + struct regmap *regmap; + u32 xclk_freq; + u32 pll_prediv; + u32 pll_mult; + u32 pixel_clock; + u16 oif_ctrl; + u8 nb_of_lane; + u32 gpios[VD56G3_NB_GPIOS]; + unsigned long ext_leds_mask; + bool is_mono; + struct v4l2_ctrl_handler ctrl_handler; + struct v4l2_ctrl *hblank_ctrl; + struct v4l2_ctrl *vblank_ctrl; + struct { + struct v4l2_ctrl *hflip_ctrl; + struct v4l2_ctrl *vflip_ctrl; + }; + struct v4l2_ctrl *patgen_ctrl; + struct { + struct v4l2_ctrl *ae_ctrl; + struct v4l2_ctrl *expo_ctrl; + struct v4l2_ctrl *again_ctrl; + struct v4l2_ctrl *dgain_ctrl; + }; + struct v4l2_ctrl *ae_lock_ctrl; + struct v4l2_ctrl *ae_bias_ctrl; + struct v4l2_ctrl *led_ctrl; + bool streaming; +}; + +static inline struct vd56g3 *to_vd56g3(struct v4l2_subdev *sd) +{ + return container_of_const(sd, struct vd56g3, sd); +} + +static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl) +{ + return &container_of_const(ctrl->handler, struct vd56g3, ctrl_handler) + ->sd; +} + +/* ----------------------------------------------------------------------------- + * Additional i2c register helpers + */ + +static int vd56g3_poll_reg(struct vd56g3 *sensor, u32 reg, u8 poll_val, + int *err) +{ + unsigned int val = 0; + int ret; + + if (err && *err) + return *err; + + ret = regmap_read_poll_timeout(sensor->regmap, CCI_REG_ADDR(reg), val, + (val == poll_val), 2000, + 500 * USEC_PER_MSEC); + + if (ret && err) + *err = ret; + + return ret; +} + +static int vd56g3_wait_state(struct vd56g3 *sensor, int state, int *err) +{ + return vd56g3_poll_reg(sensor, VD56G3_REG_SYSTEM_FSM, state, err); +} + +/* ----------------------------------------------------------------------------- + * Controls: definitions, helpers and handlers + */ + +static const char *const vd56g3_tp_menu[] = { "Disabled", "Solid", "Colorbar", + "Gradbar", "Hgrey", "Vgrey", + "Dgrey", "PN28" }; + +static const s64 vd56g3_ev_bias_qmenu[] = { -4000, -3500, -3000, -2500, -2000, + -1500, -1000, -500, 0, 500, + 1000, 1500, 2000, 2500, 3000, + 3500, 4000 }; + +static const s64 vd56g3_link_freq_1lane[] = { VD56G3_LINK_FREQ_DEF_1LANE }; + +static const s64 vd56g3_link_freq_2lanes[] = { VD56G3_LINK_FREQ_DEF_2LANES }; + +static u8 vd56g3_get_bpp(__u32 code) +{ + switch (code) { + case MEDIA_BUS_FMT_Y8_1X8: + case MEDIA_BUS_FMT_SGRBG8_1X8: + case MEDIA_BUS_FMT_SRGGB8_1X8: + case MEDIA_BUS_FMT_SBGGR8_1X8: + case MEDIA_BUS_FMT_SGBRG8_1X8: + default: + return 8; + case MEDIA_BUS_FMT_Y10_1X10: + case MEDIA_BUS_FMT_SGRBG10_1X10: + case MEDIA_BUS_FMT_SRGGB10_1X10: + case MEDIA_BUS_FMT_SBGGR10_1X10: + case MEDIA_BUS_FMT_SGBRG10_1X10: + return 10; + } +} + +static u8 vd56g3_get_datatype(__u32 code) +{ + switch (code) { + case MEDIA_BUS_FMT_Y8_1X8: + case MEDIA_BUS_FMT_SGRBG8_1X8: + case MEDIA_BUS_FMT_SRGGB8_1X8: + case MEDIA_BUS_FMT_SBGGR8_1X8: + case MEDIA_BUS_FMT_SGBRG8_1X8: + default: + return MIPI_CSI2_DT_RAW8; + case MEDIA_BUS_FMT_Y10_1X10: + case MEDIA_BUS_FMT_SGRBG10_1X10: + case MEDIA_BUS_FMT_SRGGB10_1X10: + case MEDIA_BUS_FMT_SBGGR10_1X10: + case MEDIA_BUS_FMT_SGBRG10_1X10: + return MIPI_CSI2_DT_RAW10; + } +} + +static int vd56g3_read_expo_cluster(struct vd56g3 *sensor, bool force_cur_val) +{ + u64 exposure = 0; + u64 again = 0; + u64 dgain = 0; + int ret = 0; + + /* + * When 'force_cur_val' is enabled, save the ctrl value in 'cur.val' + * instead of the normal 'val', this is used during poweroff to cache + * volatile ctrls and enable coldstart. + */ + cci_read(sensor->regmap, VD56G3_REG_APPLIED_COARSE_EXPOSURE, &exposure, + &ret); + cci_read(sensor->regmap, VD56G3_REG_APPLIED_ANALOG_GAIN, &again, &ret); + cci_read(sensor->regmap, VD56G3_REG_APPLIED_DIGITAL_GAIN, &dgain, &ret); + if (ret) + return ret; + + if (force_cur_val) { + sensor->expo_ctrl->cur.val = exposure; + sensor->again_ctrl->cur.val = again; + sensor->dgain_ctrl->cur.val = dgain; + } else { + sensor->expo_ctrl->val = exposure; + sensor->again_ctrl->val = again; + sensor->dgain_ctrl->val = dgain; + } + + return ret; +} + +static int vd56g3_update_patgen(struct vd56g3 *sensor, u32 patgen_index) +{ + u32 pattern = patgen_index <= 3 ? patgen_index : patgen_index + 12; + u16 patgen = pattern << VD56G3_PATGEN_TYPE_SHIFT; + u8 duster = VD56G3_DUSTER_ENABLE_DEF_MODULES; + u8 darkcal = VD56G3_DARKCAL_ENABLE; + int ret = 0; + + if (patgen_index) { + patgen |= VD56G3_PATGEN_ENABLE; + duster = VD56G3_DUSTER_DISABLE; + darkcal = VD56G3_DARKCAL_DISABLE_DARKAVG; + } + + cci_write(sensor->regmap, VD56G3_REG_DUSTER_CTRL, duster, &ret); + cci_write(sensor->regmap, VD56G3_REG_DARKCAL_CTRL, darkcal, &ret); + cci_write(sensor->regmap, VD56G3_REG_PATGEN_CTRL, patgen, &ret); + + return ret; +} + +static int vd56g3_update_expo_cluster(struct vd56g3 *sensor, bool is_auto) +{ + enum vd56g3_expo_state expo_state = is_auto ? VD56G3_EXP_MODE_AUTO : + VD56G3_EXP_MODE_MANUAL; + int ret = 0; + + if (sensor->ae_ctrl->is_new) + cci_write(sensor->regmap, VD56G3_REG_EXP_MODE, expo_state, + &ret); + + /* In Auto expo, set coldstart parameters */ + if (is_auto && sensor->ae_ctrl->is_new) { + cci_write(sensor->regmap, + VD56G3_REG_AE_COLDSTART_COARSE_EXPOSURE, + sensor->expo_ctrl->val, &ret); + cci_write(sensor->regmap, VD56G3_REG_AE_COLDSTART_ANALOG_GAIN, + sensor->again_ctrl->val, &ret); + cci_write(sensor->regmap, VD56G3_REG_AE_COLDSTART_DIGITAL_GAIN, + sensor->dgain_ctrl->val, &ret); + } + + /* In Manual expo, set exposure, analog and digital gains */ + if (!is_auto && sensor->expo_ctrl->is_new) + cci_write(sensor->regmap, VD56G3_REG_MANUAL_COARSE_EXPOSURE, + sensor->expo_ctrl->val, &ret); + + if (!is_auto && sensor->again_ctrl->is_new) + cci_write(sensor->regmap, VD56G3_REG_MANUAL_ANALOG_GAIN, + sensor->again_ctrl->val, &ret); + + if (!is_auto && sensor->dgain_ctrl->is_new) { + cci_write(sensor->regmap, VD56G3_REG_MANUAL_DIGITAL_GAIN_CH0, + sensor->dgain_ctrl->val, &ret); + cci_write(sensor->regmap, VD56G3_REG_MANUAL_DIGITAL_GAIN_CH1, + sensor->dgain_ctrl->val, &ret); + cci_write(sensor->regmap, VD56G3_REG_MANUAL_DIGITAL_GAIN_CH2, + sensor->dgain_ctrl->val, &ret); + cci_write(sensor->regmap, VD56G3_REG_MANUAL_DIGITAL_GAIN_CH3, + sensor->dgain_ctrl->val, &ret); + } + + return ret; +} + +static int vd56g3_lock_exposure(struct vd56g3 *sensor, u32 lock_val) +{ + bool ae_lock = lock_val & V4L2_LOCK_EXPOSURE; + enum vd56g3_expo_state expo_state = ae_lock ? VD56G3_EXP_MODE_FREEZE : + VD56G3_EXP_MODE_AUTO; + int ret = 0; + + if (sensor->ae_ctrl->val == V4L2_EXPOSURE_AUTO) + cci_write(sensor->regmap, VD56G3_REG_EXP_MODE, expo_state, + &ret); + + return ret; +} + +static int vd56g3_write_gpiox(struct vd56g3 *sensor, unsigned long gpio_mask) +{ + unsigned long io; + u32 gpio_val; + int ret = 0; + + for_each_set_bit(io, &gpio_mask, VD56G3_NB_GPIOS) { + gpio_val = sensor->gpios[io]; + + if (gpio_val == VD56G3_GPIOX_STROBE_MODE && + sensor->led_ctrl->val == V4L2_FLASH_LED_MODE_NONE) + gpio_val = VD56G3_GPIOX_GPIO_IN; + + cci_write(sensor->regmap, VD56G3_REG_GPIO_0_CTRL + io, gpio_val, + &ret); + } + + return ret; +} + +static int vd56g3_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + struct v4l2_subdev *sd = ctrl_to_sd(ctrl); + struct vd56g3 *sensor = to_vd56g3(sd); + struct i2c_client *client = v4l2_get_subdevdata(sd); + int ret = 0; + + /* Interact with HW only when it is powered ON */ + if (!pm_runtime_get_if_in_use(&client->dev)) + return 0; + + switch (ctrl->id) { + case V4L2_CID_EXPOSURE_AUTO: + ret = vd56g3_read_expo_cluster(sensor, false); + break; + default: + ret = -EINVAL; + break; + } + + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + + return ret; +} + +static int vd56g3_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct v4l2_subdev *sd = ctrl_to_sd(ctrl); + struct vd56g3 *sensor = to_vd56g3(sd); + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct v4l2_subdev_state *state; + const struct v4l2_rect *crop; + unsigned int frame_length = 0; + unsigned int expo_max; + unsigned int ae_compensation; + bool is_auto = false; + int ret; + + state = v4l2_subdev_get_locked_active_state(sd); + crop = v4l2_subdev_state_get_crop(state, 0); + + if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) + return 0; + + /* Update controls state, range, etc. whatever the state of the HW */ + switch (ctrl->id) { + case V4L2_CID_VBLANK: + frame_length = crop->height + ctrl->val; + expo_max = frame_length - VD56G3_EXPOSURE_MARGIN; + __v4l2_ctrl_modify_range(sensor->expo_ctrl, 0, expo_max, 1, + VD56G3_EXPOSURE_DEFAULT); + break; + case V4L2_CID_EXPOSURE_AUTO: + is_auto = (ctrl->val == V4L2_EXPOSURE_AUTO); + __v4l2_ctrl_grab(sensor->ae_lock_ctrl, !is_auto); + __v4l2_ctrl_grab(sensor->ae_bias_ctrl, !is_auto); + break; + default: + break; + } + + /* Interact with HW only when it is powered ON */ + if (!pm_runtime_get_if_in_use(&client->dev)) + return 0; + + switch (ctrl->id) { + case V4L2_CID_HFLIP: + ret = cci_write(sensor->regmap, VD56G3_REG_ORIENTATION, + sensor->hflip_ctrl->val | + (sensor->vflip_ctrl->val << 1), + NULL); + break; + case V4L2_CID_TEST_PATTERN: + ret = vd56g3_update_patgen(sensor, ctrl->val); + break; + case V4L2_CID_EXPOSURE_AUTO: + ret = vd56g3_update_expo_cluster(sensor, is_auto); + break; + case V4L2_CID_3A_LOCK: + ret = vd56g3_lock_exposure(sensor, ctrl->val); + break; + case V4L2_CID_AUTO_EXPOSURE_BIAS: + ae_compensation = + DIV_ROUND_CLOSEST((int)vd56g3_ev_bias_qmenu[ctrl->val] * + 256, 1000); + ret = cci_write(sensor->regmap, VD56G3_REG_AE_COMPENSATION, + ae_compensation, NULL); + break; + case V4L2_CID_VBLANK: + ret = cci_write(sensor->regmap, VD56G3_REG_FRAME_LENGTH, + frame_length, NULL); + break; + case V4L2_CID_FLASH_LED_MODE: + ret = vd56g3_write_gpiox(sensor, sensor->ext_leds_mask); + break; + default: + ret = -EINVAL; + break; + } + + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops vd56g3_ctrl_ops = { + .g_volatile_ctrl = vd56g3_g_volatile_ctrl, + .s_ctrl = vd56g3_s_ctrl, +}; + +static int vd56g3_update_controls(struct vd56g3 *sensor) +{ + struct v4l2_subdev_state *state; + const struct v4l2_rect *crop; + unsigned int hblank; + unsigned int vblank_min, vblank, vblank_max; + unsigned int frame_length; + unsigned int expo_max; + int ret; + + state = v4l2_subdev_get_locked_active_state(&sensor->sd); + crop = v4l2_subdev_state_get_crop(state, 0); + hblank = VD56G3_LINE_LENGTH_MIN - crop->width; + vblank_min = VD56G3_VBLANK_MIN; + vblank = VD56G3_FRAME_LENGTH_DEF_60FPS - crop->height; + vblank_max = 0xffff - crop->height; + frame_length = crop->height + vblank; + expo_max = frame_length - VD56G3_EXPOSURE_MARGIN; + + /* Update blanking and exposure (ranges + values) */ + ret = __v4l2_ctrl_modify_range(sensor->hblank_ctrl, hblank, hblank, 1, + hblank); + if (ret) + return ret; + + ret = __v4l2_ctrl_modify_range(sensor->vblank_ctrl, vblank_min, + vblank_max, 1, vblank); + if (ret) + return ret; + + ret = __v4l2_ctrl_s_ctrl(sensor->vblank_ctrl, vblank); + if (ret) + return ret; + + ret = __v4l2_ctrl_modify_range(sensor->expo_ctrl, 0, expo_max, 1, + VD56G3_EXPOSURE_DEFAULT); + if (ret) + return ret; + + return __v4l2_ctrl_s_ctrl(sensor->expo_ctrl, VD56G3_EXPOSURE_DEFAULT); +} + +static int vd56g3_init_controls(struct vd56g3 *sensor) +{ + const struct v4l2_ctrl_ops *ops = &vd56g3_ctrl_ops; + struct v4l2_ctrl_handler *hdl = &sensor->ctrl_handler; + struct v4l2_ctrl *ctrl; + int ret; + + v4l2_ctrl_handler_init(hdl, 25); + + /* Horizontal & vertical flips modify bayer code on RGB variant */ + sensor->hflip_ctrl = + v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0); + if (sensor->hflip_ctrl) + sensor->hflip_ctrl->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; + + sensor->vflip_ctrl = + v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0); + if (sensor->vflip_ctrl) + sensor->vflip_ctrl->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; + + sensor->patgen_ctrl = + v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(vd56g3_tp_menu) - 1, 0, + 0, vd56g3_tp_menu); + + ctrl = v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_LINK_FREQ, + ARRAY_SIZE(vd56g3_link_freq_1lane) - 1, 0, + (sensor->nb_of_lane == 2) ? + vd56g3_link_freq_2lanes : + vd56g3_link_freq_1lane); + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_PIXEL_RATE, + sensor->pixel_clock, sensor->pixel_clock, 1, + sensor->pixel_clock); + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + sensor->ae_ctrl = v4l2_ctrl_new_std_menu(hdl, ops, + V4L2_CID_EXPOSURE_AUTO, + V4L2_EXPOSURE_MANUAL, 0, + V4L2_EXPOSURE_AUTO); + + sensor->ae_lock_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_3A_LOCK, 0, + GENMASK(2, 0), 0, 0); + + sensor->ae_bias_ctrl = + v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_AUTO_EXPOSURE_BIAS, + ARRAY_SIZE(vd56g3_ev_bias_qmenu) - 1, + ARRAY_SIZE(vd56g3_ev_bias_qmenu) / 2, + vd56g3_ev_bias_qmenu); + + /* + * Analog gain [1, 8] is computed with the following logic : + * 32/(32 - again_reg), with again_reg in the range [0:28] + * Digital gain [1.00, 8.00] is coded as a Fixed Point 5.8 + */ + sensor->again_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN, + 0, 28, 1, 0); + sensor->dgain_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_DIGITAL_GAIN, + 0x100, 0x800, 1, 0x100); + + /* + * Set the exposure, horizontal and vertical blanking ctrls + * to hardcoded values, they will be updated in vd56g3_update_controls. + * Exposure being in an auto-cluster, set a significant value here. + */ + sensor->expo_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE, + VD56G3_EXPOSURE_DEFAULT, + VD56G3_EXPOSURE_DEFAULT, 1, + VD56G3_EXPOSURE_DEFAULT); + sensor->hblank_ctrl = + v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK, 1, 1, 1, 1); + if (sensor->hblank_ctrl) + sensor->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + sensor->vblank_ctrl = + v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK, 1, 1, 1, 1); + + /* Additional control based on device tree properties */ + if (sensor->ext_leds_mask) + sensor->led_ctrl = + v4l2_ctrl_new_std_menu(hdl, ops, + V4L2_CID_FLASH_LED_MODE, + V4L2_FLASH_LED_MODE_FLASH, 0, + V4L2_FLASH_LED_MODE_NONE); + + if (hdl->error) { + ret = hdl->error; + goto free_ctrls; + } + + v4l2_ctrl_cluster(2, &sensor->hflip_ctrl); + v4l2_ctrl_auto_cluster(4, &sensor->ae_ctrl, V4L2_EXPOSURE_MANUAL, true); + + sensor->sd.ctrl_handler = hdl; + + return 0; + +free_ctrls: + v4l2_ctrl_handler_free(hdl); + + return ret; +} + +/* ----------------------------------------------------------------------------- + * Videos ops + */ + +static int vd56g3_stream_on(struct vd56g3 *sensor, + struct v4l2_subdev_state *state) +{ + const struct v4l2_mbus_framefmt *format; + const struct v4l2_rect *crop; + unsigned int csi_mbps = ((sensor->nb_of_lane == 2) ? + VD56G3_LINK_FREQ_DEF_2LANES : + VD56G3_LINK_FREQ_DEF_1LANE) * 2 / MEGA; + unsigned int binning; + int ret = 0; + + format = v4l2_subdev_state_get_format(state, 0); + crop = v4l2_subdev_state_get_crop(state, 0); + + /* configure clocks */ + cci_write(sensor->regmap, VD56G3_REG_EXT_CLOCK, sensor->xclk_freq, + &ret); + cci_write(sensor->regmap, VD56G3_REG_CLK_PLL_PREDIV, sensor->pll_prediv, + &ret); + cci_write(sensor->regmap, VD56G3_REG_CLK_SYS_PLL_MULT, sensor->pll_mult, + &ret); + + /* configure output */ + cci_write(sensor->regmap, VD56G3_REG_FORMAT_CTRL, + vd56g3_get_bpp(format->code), &ret); + cci_write(sensor->regmap, VD56G3_REG_OIF_CTRL, sensor->oif_ctrl, &ret); + cci_write(sensor->regmap, VD56G3_REG_OIF_CSI_BITRATE, csi_mbps, &ret); + cci_write(sensor->regmap, VD56G3_REG_OIF_IMG_CTRL, + vd56g3_get_datatype(format->code), &ret); + cci_write(sensor->regmap, VD56G3_REG_ISL_ENABLE, 0, &ret); + + /* configure binning mode */ + switch (crop->width / format->width) { + case 1: + default: + binning = READOUT_NORMAL; + break; + case 2: + binning = READOUT_DIGITAL_BINNING_X2; + break; + } + cci_write(sensor->regmap, VD56G3_REG_READOUT_CTRL, binning, &ret); + + /* configure ROIs */ + cci_write(sensor->regmap, VD56G3_REG_Y_START, crop->top, &ret); + cci_write(sensor->regmap, VD56G3_REG_Y_END, + crop->top + crop->height - 1, &ret); + cci_write(sensor->regmap, VD56G3_REG_OUT_ROI_X_START, crop->left, &ret); + cci_write(sensor->regmap, VD56G3_REG_OUT_ROI_X_END, + crop->left + crop->width - 1, &ret); + cci_write(sensor->regmap, VD56G3_REG_OUT_ROI_Y_START, 0, &ret); + cci_write(sensor->regmap, VD56G3_REG_OUT_ROI_Y_END, crop->height - 1, + &ret); + cci_write(sensor->regmap, VD56G3_REG_AE_ROI_START_H, crop->left, &ret); + cci_write(sensor->regmap, VD56G3_REG_AE_ROI_END_H, + crop->left + crop->width - 1, &ret); + cci_write(sensor->regmap, VD56G3_REG_AE_ROI_START_V, 0, &ret); + cci_write(sensor->regmap, VD56G3_REG_AE_ROI_END_V, crop->height - 1, + &ret); + if (ret) + return ret; + + /* Setup default GPIO values; could be overridden by V4L2 ctrl setup */ + ret = vd56g3_write_gpiox(sensor, GENMASK(VD56G3_NB_GPIOS - 1, 0)); + if (ret) + return ret; + + /* Apply settings from V4L2 ctrls */ + ret = __v4l2_ctrl_handler_setup(&sensor->ctrl_handler); + if (ret) + return ret; + + /* start streaming */ + cci_write(sensor->regmap, VD56G3_REG_STBY, VD56G3_CMD_START_STREAM, + &ret); + vd56g3_poll_reg(sensor, VD56G3_REG_STBY, VD56G3_CMD_ACK, &ret); + vd56g3_wait_state(sensor, VD56G3_SYSTEM_FSM_STREAMING, &ret); + + return ret; +} + +static int vd56g3_stream_off(struct vd56g3 *sensor) +{ + int ret; + + /* Retrieve Expo cluster to enable coldstart of AE */ + ret = vd56g3_read_expo_cluster(sensor, true); + + cci_write(sensor->regmap, VD56G3_REG_STREAMING, VD56G3_CMD_STOP_STREAM, + &ret); + vd56g3_poll_reg(sensor, VD56G3_REG_STREAMING, VD56G3_CMD_ACK, &ret); + vd56g3_wait_state(sensor, VD56G3_SYSTEM_FSM_SW_STBY, &ret); + + return ret; +} + +static int vd56g3_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct vd56g3 *sensor = to_vd56g3(sd); + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct v4l2_subdev_state *state; + int ret = 0; + + state = v4l2_subdev_lock_and_get_active_state(sd); + + if (enable) { + ret = pm_runtime_resume_and_get(&client->dev); + if (ret < 0) + goto unlock; + ret = vd56g3_stream_on(sensor, state); + if (ret) { + dev_err(&client->dev, "Failed to start streaming\n"); + pm_runtime_put_sync(&client->dev); + } + } else { + vd56g3_stream_off(sensor); + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + } + + if (!ret) { + sensor->streaming = enable; + + /* some controls are locked during streaming */ + __v4l2_ctrl_grab(sensor->hflip_ctrl, enable); + __v4l2_ctrl_grab(sensor->vflip_ctrl, enable); + __v4l2_ctrl_grab(sensor->patgen_ctrl, enable); + } + +unlock: + v4l2_subdev_unlock_state(state); + + return ret; +} + +static const struct v4l2_subdev_video_ops vd56g3_video_ops = { + .s_stream = vd56g3_s_stream, +}; + +/* ----------------------------------------------------------------------------- + * Pad ops + */ + +/* Media bus code is dependent of : + * - 8bits or 10bits output + * - variant : Mono or RGB + * - H/V flips parameters in case of RGB + */ +static u32 vd56g3_get_mbus_code(struct vd56g3 *sensor, u32 code) +{ + unsigned int i_bpp; + unsigned int j; + + for (i_bpp = 0; i_bpp < ARRAY_SIZE(vd56g3_mbus_codes); i_bpp++) { + for (j = 0; j < ARRAY_SIZE(vd56g3_mbus_codes[i_bpp]); j++) { + if (vd56g3_mbus_codes[i_bpp][j] == code) + goto endloops; + } + } + +endloops: + if (i_bpp >= ARRAY_SIZE(vd56g3_mbus_codes)) + i_bpp = 0; + + if (sensor->is_mono) + j = 0; + else + j = 1 + (sensor->hflip_ctrl->val ? 1 : 0) + + (sensor->vflip_ctrl->val ? 2 : 0); + + return vd56g3_mbus_codes[i_bpp][j]; +} + +static int vd56g3_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct vd56g3 *sensor = to_vd56g3(sd); + + if (code->index >= ARRAY_SIZE(vd56g3_mbus_codes)) + return -EINVAL; + + code->code = + vd56g3_get_mbus_code(sensor, vd56g3_mbus_codes[code->index][0]); + + return 0; +} + +static int vd56g3_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(vd56g3_supported_modes)) + return -EINVAL; + + fse->min_width = vd56g3_supported_modes[fse->index].width; + fse->max_width = fse->min_width; + fse->min_height = vd56g3_supported_modes[fse->index].height; + fse->max_height = fse->min_height; + + return 0; +} + +static void vd56g3_update_img_pad_format(struct vd56g3 *sensor, + const struct vd56g3_mode *mode, + u32 mbus_code, + struct v4l2_mbus_framefmt *mbus_fmt) +{ + mbus_fmt->width = mode->width; + mbus_fmt->height = mode->height; + mbus_fmt->code = vd56g3_get_mbus_code(sensor, mbus_code); + mbus_fmt->colorspace = V4L2_COLORSPACE_RAW; + mbus_fmt->field = V4L2_FIELD_NONE; + mbus_fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; + mbus_fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE; + mbus_fmt->xfer_func = V4L2_XFER_FUNC_NONE; +} + +static int vd56g3_set_pad_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *sd_fmt) +{ + struct vd56g3 *sensor = to_vd56g3(sd); + const struct vd56g3_mode *new_mode; + struct v4l2_rect pad_crop; + unsigned int binning; + int ret = 0; + + if (sensor->streaming) + return -EBUSY; + + new_mode = v4l2_find_nearest_size(vd56g3_supported_modes, + ARRAY_SIZE(vd56g3_supported_modes), + width, height, sd_fmt->format.width, + sd_fmt->format.height); + + vd56g3_update_img_pad_format(sensor, new_mode, sd_fmt->format.code, + &sd_fmt->format); + + /* Compute crop rectangle (maximized via binning) */ + binning = min(VD56G3_NATIVE_WIDTH / sd_fmt->format.width, + VD56G3_NATIVE_HEIGHT / sd_fmt->format.height); + binning = min(binning, 2U); + pad_crop.width = sd_fmt->format.width * binning; + pad_crop.height = sd_fmt->format.height * binning; + pad_crop.left = (VD56G3_NATIVE_WIDTH - pad_crop.width) / 2; + pad_crop.top = (VD56G3_NATIVE_HEIGHT - pad_crop.height) / 2; + + /* Update active state's format and crop */ + if (sd_fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) + ret = vd56g3_update_controls(sensor); + + if (!ret) { + *v4l2_subdev_state_get_format(sd_state, sd_fmt->pad) = + sd_fmt->format; + *v4l2_subdev_state_get_crop(sd_state, sd_fmt->pad) = pad_crop; + } + + return ret; +} + +static int vd56g3_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_selection *sel) +{ + switch (sel->target) { + case V4L2_SEL_TGT_CROP: + sel->r = *v4l2_subdev_state_get_crop(sd_state, 0); + break; + case V4L2_SEL_TGT_NATIVE_SIZE: + case V4L2_SEL_TGT_CROP_DEFAULT: + case V4L2_SEL_TGT_CROP_BOUNDS: + sel->r.top = 0; + sel->r.left = 0; + sel->r.width = VD56G3_NATIVE_WIDTH; + sel->r.height = VD56G3_NATIVE_HEIGHT; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int vd56g3_init_state(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state) +{ + unsigned int def_mode = VD56G3_DEFAULT_MODE; + struct v4l2_subdev_format fmt = { + .which = V4L2_SUBDEV_FORMAT_TRY, + .pad = 0, + .format = { + .code = vd56g3_mbus_codes[0][0], + .width = vd56g3_supported_modes[def_mode].width, + .height = vd56g3_supported_modes[def_mode].height, + }, + }; + + vd56g3_set_pad_fmt(sd, sd_state, &fmt); + return 0; +} + +static const struct v4l2_subdev_core_ops vd56g3_core_ops = { + .subscribe_event = v4l2_ctrl_subdev_subscribe_event, + .unsubscribe_event = v4l2_event_subdev_unsubscribe, +}; + +static const struct v4l2_subdev_pad_ops vd56g3_pad_ops = { + .enum_mbus_code = vd56g3_enum_mbus_code, + .enum_frame_size = vd56g3_enum_frame_size, + .get_fmt = v4l2_subdev_get_fmt, + .set_fmt = vd56g3_set_pad_fmt, + .get_selection = vd56g3_get_selection, +}; + +static const struct v4l2_subdev_ops vd56g3_subdev_ops = { + .core = &vd56g3_core_ops, + .video = &vd56g3_video_ops, + .pad = &vd56g3_pad_ops, +}; + +static const struct media_entity_operations vd56g3_subdev_entity_ops = { + .link_validate = v4l2_subdev_link_validate, +}; + +static const struct v4l2_subdev_internal_ops vd56g3_internal_ops = { + .init_state = vd56g3_init_state, +}; + +/* ----------------------------------------------------------------------------- + * Power management + */ + +static int vd56g3_power_on(struct vd56g3 *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + int ret; + + /* power on */ + ret = regulator_bulk_enable(ARRAY_SIZE(sensor->supplies), + sensor->supplies); + if (ret) { + dev_err(&client->dev, "Failed to enable regulators %d", ret); + return ret; + } + + ret = clk_prepare_enable(sensor->xclk); + if (ret) { + dev_err(&client->dev, "Failed to enable clock %d", ret); + goto disable_reg; + } + + gpiod_set_value_cansleep(sensor->reset_gpio, 0); + usleep_range(3500, 4000); + ret = vd56g3_wait_state(sensor, VD56G3_SYSTEM_FSM_READY_TO_BOOT, NULL); + if (ret) { + dev_err(&client->dev, "Sensor reset failed %d\n", ret); + goto disable_clock; + } + + /* boot sensor */ + cci_write(sensor->regmap, VD56G3_REG_BOOT, VD56G3_CMD_BOOT, &ret); + vd56g3_poll_reg(sensor, VD56G3_REG_BOOT, VD56G3_CMD_ACK, &ret); + vd56g3_wait_state(sensor, VD56G3_SYSTEM_FSM_SW_STBY, &ret); + if (ret) { + dev_err(&client->dev, "sensor boot failed %d", ret); + goto disable_clock; + } + + return 0; + +disable_clock: + clk_disable_unprepare(sensor->xclk); + gpiod_set_value_cansleep(sensor->reset_gpio, 1); +disable_reg: + regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies); + + return ret; +} + +static int vd56g3_power_off(struct vd56g3 *sensor) +{ + clk_disable_unprepare(sensor->xclk); + gpiod_set_value_cansleep(sensor->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies); + return 0; +} + +static int vd56g3_runtime_resume(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct vd56g3 *sensor = to_vd56g3(sd); + struct i2c_client *client = sensor->i2c_client; + int ret; + + ret = vd56g3_power_on(sensor); + if (ret) + dev_err(&client->dev, "Failed to power on %d", ret); + + return ret; +} + +static int vd56g3_runtime_suspend(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct vd56g3 *sensor = to_vd56g3(sd); + + return vd56g3_power_off(sensor); +} + +static const struct dev_pm_ops vd56g3_pm_ops = { + SET_RUNTIME_PM_OPS(vd56g3_runtime_suspend, vd56g3_runtime_resume, NULL) +}; + +/* ----------------------------------------------------------------------------- + * Probe and initialization + */ + +static int vd56g3_check_csi_conf(struct vd56g3 *sensor, + struct fwnode_handle *endpoint) +{ + struct i2c_client *client = sensor->i2c_client; + struct v4l2_fwnode_endpoint ep = { .bus_type = V4L2_MBUS_CSI2_DPHY }; + u32 phy_data_lanes[VD56G3_MAX_CSI_DATA_LANES] = { ~0, ~0 }; + u8 n_lanes; + u64 frequency; + int p, l; + int ret = 0; + + ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep); + if (ret) + return -EINVAL; + + /* Check lanes number */ + n_lanes = ep.bus.mipi_csi2.num_data_lanes; + if (n_lanes != 1 && n_lanes != 2) { + dev_err(&client->dev, "Invalid data lane number %d\n", n_lanes); + ret = -EINVAL; + goto done; + } + sensor->nb_of_lane = n_lanes; + + /* Clock lane must be first */ + if (ep.bus.mipi_csi2.clock_lane != 0) { + dev_err(&client->dev, "Clk lane must be mapped to lane 0\n"); + ret = -EINVAL; + goto done; + } + + /* Prepare Output Interface conf based on lane settings + * logical to physical lane conversion (+ pad remaining slots) + */ + for (l = 0; l < n_lanes; l++) + phy_data_lanes[ep.bus.mipi_csi2.data_lanes[l] - 1] = l; + for (p = 0; p < VD56G3_MAX_CSI_DATA_LANES; p++) { + if (phy_data_lanes[p] != ~0) + continue; + phy_data_lanes[p] = l; + l++; + } + sensor->oif_ctrl = n_lanes | + (ep.bus.mipi_csi2.lane_polarities[0] << 3) | + ((phy_data_lanes[0]) << 4) | + (ep.bus.mipi_csi2.lane_polarities[1] << 6) | + ((phy_data_lanes[1]) << 7) | + (ep.bus.mipi_csi2.lane_polarities[2] << 9); + + /* Check link frequency */ + if (!ep.nr_of_link_frequencies) { + dev_err(&client->dev, "link-frequency not found in DT\n"); + ret = -EINVAL; + goto done; + } + frequency = (n_lanes == 2) ? VD56G3_LINK_FREQ_DEF_2LANES : + VD56G3_LINK_FREQ_DEF_1LANE; + if (ep.nr_of_link_frequencies != 1 || + ep.link_frequencies[0] != frequency) { + dev_err(&client->dev, "Link frequency not supported: %lld\n", + ep.link_frequencies[0]); + ret = -EINVAL; + goto done; + } + +done: + v4l2_fwnode_endpoint_free(&ep); + return ret; +} + +static int vd56g3_parse_dt_gpios_array(struct vd56g3 *sensor, char *prop_name, + u32 *array, int *nb) +{ + struct i2c_client *client = sensor->i2c_client; + struct device_node *np = client->dev.of_node; + unsigned int i; + + *nb = of_property_read_variable_u32_array(np, prop_name, array, 0, + VD56G3_NB_GPIOS); + + if (*nb == -EINVAL) { + *nb = 0; + return *nb; + } else if (*nb < 0) { + dev_err(&client->dev, "Failed to read %s prop\n", prop_name); + return *nb; + } + + for (i = 0; i < *nb; i++) { + if (array[i] >= VD56G3_NB_GPIOS) { + dev_err(&client->dev, "Invalid GPIO : %d\n", array[i]); + return -EINVAL; + } + } + + return 0; +} + +static int vd56g3_parse_dt_gpios(struct vd56g3 *sensor) +{ + u32 led_gpios[VD56G3_NB_GPIOS]; + int nb_gpios_leds; + unsigned int i; + int ret; + + /* Initialize GPIOs to default */ + for (i = 0; i < VD56G3_NB_GPIOS; i++) + sensor->gpios[i] = VD56G3_GPIOX_GPIO_IN; + sensor->ext_leds_mask = 0; + + /* Take into account optional 'st,leds' output for GPIOs */ + ret = vd56g3_parse_dt_gpios_array(sensor, "st,leds", led_gpios, + &nb_gpios_leds); + if (ret) + return ret; + for (i = 0; i < nb_gpios_leds; i++) { + sensor->gpios[led_gpios[i]] = VD56G3_GPIOX_STROBE_MODE; + set_bit(led_gpios[i], &sensor->ext_leds_mask); + } + + return 0; +} + +static int vd56g3_parse_dt(struct vd56g3 *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + struct device *dev = &client->dev; + struct fwnode_handle *endpoint; + int ret; + + endpoint = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0, 0); + if (!endpoint) { + dev_err(dev, "endpoint node not found\n"); + return -EINVAL; + } + + ret = vd56g3_check_csi_conf(sensor, endpoint); + fwnode_handle_put(endpoint); + if (ret) + return ret; + + return vd56g3_parse_dt_gpios(sensor); +} + +static int vd56g3_get_regulators(struct vd56g3 *sensor) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(sensor->supplies); i++) + sensor->supplies[i].supply = vd56g3_supply_names[i]; + + return devm_regulator_bulk_get(&sensor->i2c_client->dev, + ARRAY_SIZE(sensor->supplies), + sensor->supplies); +} + +static int vd56g3_prepare_clock_tree(struct vd56g3 *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + const unsigned int predivs[] = { 1, 2, 4 }; + u32 pll_out; + int i; + + /* External clock must be in [6Mhz-27Mhz] */ + if (sensor->xclk_freq < 6 * HZ_PER_MHZ || + sensor->xclk_freq > 27 * HZ_PER_MHZ) { + dev_err(&client->dev, + "Only 6Mhz-27Mhz clock range supported. Provided %lu MHz\n", + sensor->xclk_freq / HZ_PER_MHZ); + return -EINVAL; + } + + /* PLL input should be in [6Mhz-12Mhz[ */ + for (i = 0; i < ARRAY_SIZE(predivs); i++) { + sensor->pll_prediv = predivs[i]; + if (sensor->xclk_freq / sensor->pll_prediv < 12 * HZ_PER_MHZ) + break; + } + + /* PLL output clock must be as close as possible to 804Mhz */ + sensor->pll_mult = (VD56G3_TARGET_PLL * sensor->pll_prediv + + sensor->xclk_freq / 2) / + sensor->xclk_freq; + pll_out = sensor->xclk_freq * sensor->pll_mult / sensor->pll_prediv; + + /* Target Pixel Clock for standard 10bit ADC mode : 160.8Mhz */ + sensor->pixel_clock = pll_out / VD56G3_VT_CLOCK_DIV; + + return 0; +} + +static int vd56g3_detect(struct vd56g3 *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + struct device *dev = &client->dev; + unsigned int model; + u64 model_id = 0; + u64 device_revision = 0; + u64 optical_revision = 0; + int ret = 0; + + model = (uintptr_t)device_get_match_data(dev); + + cci_read(sensor->regmap, VD56G3_REG_MODEL_ID, &model_id, &ret); + if (ret) + return ret; + + if (model_id != VD56G3_MODEL_ID) { + dev_err(&client->dev, "Unsupported sensor id %x", + (u16)model_id); + return -ENODEV; + } + + cci_read(sensor->regmap, VD56G3_REG_REVISION, &device_revision, &ret); + if (ret) + return ret; + + if ((device_revision >> 8) != VD56G3_REVISION_CUT3) { + dev_err(&client->dev, "Unsupported Cut version %x", + (u16)device_revision); + return -ENODEV; + } + + cci_read(sensor->regmap, VD56G3_REG_OPTICAL_REVISION, &optical_revision, + &ret); + if (ret) + return ret; + + sensor->is_mono = + ((optical_revision & 1) == VD56G3_OPTICAL_REVISION_MONO); + if ((sensor->is_mono && model == VD56G3_MODEL_VD66GY) || + (!sensor->is_mono && model == VD56G3_MODEL_VD56G3)) { + dev_err(&client->dev, + "Found %s sensor, while %s model is defined in DT", + (sensor->is_mono) ? "Mono" : "Bayer", + (model == VD56G3_MODEL_VD56G3) ? "vd56g3" : "vd66gy"); + return -ENODEV; + } + + return 0; +} + +static int vd56g3_subdev_init(struct vd56g3 *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + int ret; + + /* Init sub device */ + v4l2_i2c_subdev_init(&sensor->sd, client, &vd56g3_subdev_ops); + sensor->sd.internal_ops = &vd56g3_internal_ops; + sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | + V4L2_SUBDEV_FL_HAS_EVENTS; + sensor->sd.entity.ops = &vd56g3_subdev_entity_ops; + + /* Init source pad */ + sensor->pad.flags = MEDIA_PAD_FL_SOURCE; + sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad); + if (ret) { + dev_err(&client->dev, "Failed to init media entity : %d", ret); + return ret; + } + + /* Init controls */ + ret = vd56g3_init_controls(sensor); + if (ret) { + dev_err(&client->dev, "Controls initialization failed %d", ret); + goto err_media; + } + + /* Init vd56g3 struct : default resolution + raw8 */ + sensor->sd.state_lock = sensor->ctrl_handler.lock; + ret = v4l2_subdev_init_finalize(&sensor->sd); + if (ret) { + dev_err(&client->dev, "subdev init error: %d", ret); + goto err_ctrls; + } + + return vd56g3_update_controls(sensor); + +err_ctrls: + v4l2_ctrl_handler_free(sensor->sd.ctrl_handler); + +err_media: + media_entity_cleanup(&sensor->sd.entity); + return ret; +} + +static void vd56g3_subdev_cleanup(struct vd56g3 *sensor) +{ + v4l2_async_unregister_subdev(&sensor->sd); + v4l2_subdev_cleanup(&sensor->sd); + media_entity_cleanup(&sensor->sd.entity); + v4l2_ctrl_handler_free(sensor->sd.ctrl_handler); +} + +static int vd56g3_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct vd56g3 *sensor; + int ret; + + sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); + if (!sensor) + return -ENOMEM; + + sensor->i2c_client = client; + + ret = vd56g3_parse_dt(sensor); + if (ret) + return dev_err_probe(dev, ret, "Failed to parse Device Tree."); + + /* Get (and check) resources : power regs, ext clock, reset gpio */ + ret = vd56g3_get_regulators(sensor); + if (ret) + return dev_err_probe(dev, ret, "Failed to get regulators."); + + sensor->xclk = devm_clk_get(dev, NULL); + if (IS_ERR(sensor->xclk)) + return dev_err_probe(dev, PTR_ERR(sensor->xclk), + "Failed to get xclk."); + sensor->xclk_freq = clk_get_rate(sensor->xclk); + ret = vd56g3_prepare_clock_tree(sensor); + if (ret) + return ret; + + sensor->reset_gpio = + devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(sensor->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(sensor->reset_gpio), + "Failed to get reset gpio."); + + sensor->regmap = devm_cci_regmap_init_i2c(client, 16); + if (IS_ERR(sensor->regmap)) + return dev_err_probe(dev, PTR_ERR(sensor->regmap), + "Failed to init regmap."); + + /* Power ON */ + ret = vd56g3_power_on(sensor); + if (ret) + return dev_err_probe(dev, ret, "Sensor power on failed."); + + /* Enable PM runtime with autosuspend (sensor being ON, set active) */ + pm_runtime_set_active(dev); + pm_runtime_get_noresume(dev); + pm_runtime_enable(dev); + pm_runtime_set_autosuspend_delay(dev, 1000); + pm_runtime_use_autosuspend(dev); + + /* Check HW model/version */ + ret = vd56g3_detect(sensor); + if (ret) { + dev_err(&client->dev, "Sensor detect failed : %d", ret); + goto err_power_off; + } + + /* Initialize, then register V4L2 subdev */ + ret = vd56g3_subdev_init(sensor); + if (ret) { + dev_err(&client->dev, "V4l2 init failed : %d", ret); + goto err_power_off; + } + + ret = v4l2_async_register_subdev(&sensor->sd); + if (ret) { + dev_err(&client->dev, "async subdev register failed %d", ret); + goto err_subdev; + } + + /* Sensor could now be powered off (after the autosuspend delay) */ + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + dev_dbg(&client->dev, "Successfully probe %s sensor", + (sensor->is_mono) ? "vd56g3" : "vd66gy"); + + return 0; + +err_subdev: + vd56g3_subdev_cleanup(sensor); +err_power_off: + pm_runtime_disable(dev); + pm_runtime_put_noidle(dev); + vd56g3_power_off(sensor); + return ret; +} + +static void vd56g3_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct vd56g3 *sensor = to_vd56g3(sd); + + vd56g3_subdev_cleanup(sensor); + + pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + vd56g3_power_off(sensor); + pm_runtime_set_suspended(&client->dev); +} + +static const struct of_device_id vd56g3_dt_ids[] = { + { .compatible = "st,st-vd56g3", .data = (void *)VD56G3_MODEL_VD56G3 }, + { .compatible = "st,st-vd66gy", .data = (void *)VD56G3_MODEL_VD66GY }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, vd56g3_dt_ids); + +static struct i2c_driver vd56g3_i2c_driver = { + .driver = { + .name = "st-vd56g3", + .of_match_table = vd56g3_dt_ids, + .pm = &vd56g3_pm_ops, + }, + .probe = vd56g3_probe, + .remove = vd56g3_remove, +}; + +module_i2c_driver(vd56g3_i2c_driver); + +MODULE_AUTHOR("Benjamin Mugnier "); +MODULE_AUTHOR("Mickael Guene "); +MODULE_AUTHOR("Sylvain Petinot "); +MODULE_DESCRIPTION("ST VD56G3 sensor driver"); +MODULE_LICENSE("GPL");