From patchwork Thu Mar 10 13:32:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Benjamin Mugnier X-Patchwork-Id: 550228 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 509BBC43219 for ; Thu, 10 Mar 2022 13:37:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242519AbiCJNiE (ORCPT ); Thu, 10 Mar 2022 08:38:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51952 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242493AbiCJNiB (ORCPT ); Thu, 10 Mar 2022 08:38:01 -0500 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F1C314EF41 for ; Thu, 10 Mar 2022 05:36:58 -0800 (PST) Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 22AAWgmp023833 for ; Thu, 10 Mar 2022 14:36:56 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=selector1; bh=+rbZUDpG1SMkiMQycKE10fJW2bWJVAHITtmdJAcrp08=; b=xvC5tmtl0+BahGKkVFMB7Op8jqYPngs4VYg5yATUXZeofpatKXPxECf3/pYstx322l+F Emkkc5ZN6gYuDHTV2Wl1YROv6smAx7kSIBV22ybbxMngqpERfTDev/TW9frTbNBV8rGR SfeNcIem/srnGg16vCl750MLtiTdPvyDOl955vfnpjr2OGkXGwvo9jrsV6yS2gmTHRAh WajIN0+nUOUXI5sGRA5gGazHpkMDEi4xm6d3a9lprHynv3AVVX5Ih9uH1avRj2efaMe+ Rm/WTsgEpn0jEwZUhhokN7rOOTGwLVRqNokRJUYiZFBsazIgAAiKmMLJxuAlu/2Xa54D jg== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3ekymmsb16-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 10 Mar 2022 14:36:56 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 21E7C10002A for ; Thu, 10 Mar 2022 14:36:56 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag2node1.st.com [10.75.127.4]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 18824209727 for ; Thu, 10 Mar 2022 14:36:56 +0100 (CET) Received: from localhost (10.75.127.50) by SFHDAG2NODE1.st.com (10.75.127.4) with Microsoft SMTP Server (TLS) id 15.0.1497.26; Thu, 10 Mar 2022 14:36:55 +0100 From: Benjamin Mugnier To: CC: , , , Benjamin Mugnier Subject: [PATCH 2/2] media: i2c: Add driver for ST VGXY61 camera sensor Date: Thu, 10 Mar 2022 14:32:55 +0100 Message-ID: <20220310133255.1946530-3-benjamin.mugnier@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220310133255.1946530-1-benjamin.mugnier@foss.st.com> References: <20220310133255.1946530-1-benjamin.mugnier@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.50] X-ClientProxiedBy: SFHDAG2NODE3.st.com (10.75.127.6) To SFHDAG2NODE1.st.com (10.75.127.4) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-03-10_03,2022-03-09_01,2022-02-23_01 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The VGXY61 has a quad lanes CSI-2 output port running at 800mbps per lane, and supports RAW8, RAW10, RAW12, RAW14 and RAW16 formats. The driver handles both sensor types: - VG5661 and VG6661: 1.6 Mpx (1464 x 1104) 75fps. - VG5761 and VG6761: 2.3 Mpx (1944 x 1204) 60 fps. The driver supports: - HDR linearize mode, HDR substraction mode, and no HDR - GPIOs LEDs strobing - Digital binning and analog subsampling - Horizontal and vertical flip - Manual exposure - Analog and digital gains - Test patterns Signed-off-by: Benjamin Mugnier --- drivers/media/i2c/Kconfig | 11 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/st-vgxy61.c | 1919 +++++++++++++++++++++++++++++++++ 3 files changed, 1931 insertions(+) create mode 100644 drivers/media/i2c/st-vgxy61.c diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index fe66093b8849..e6e9c1f19c09 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -1454,6 +1454,17 @@ config VIDEO_S5C73M3 This is a V4L2 sensor driver for Samsung S5C73M3 8 Mpixel camera. +config VIDEO_ST_VGXY61 + tristate "ST VGXY61 sensor support" + depends on OF + depends on GPIOLIB && VIDEO_V4L2 && I2C + select MEDIA_CONTROLLER + select VIDEO_V4L2_SUBDEV_API + select V4L2_FWNODE + help + This is a Video4Linux2 sensor driver for the ST VGXY61 + camera sensor. + endmenu menu "Lens drivers" diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index f6b80ef6f41d..0190b5edfa24 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -138,4 +138,5 @@ obj-$(CONFIG_VIDEO_MAX9271_LIB) += max9271.o obj-$(CONFIG_VIDEO_RDACM20) += rdacm20.o obj-$(CONFIG_VIDEO_RDACM21) += rdacm21.o obj-$(CONFIG_VIDEO_ST_MIPID02) += st-mipid02.o +obj-$(CONFIG_VIDEO_ST_VGXY61) += st-vgxy61.o obj-$(CONFIG_SDR_MAX2175) += max2175.o diff --git a/drivers/media/i2c/st-vgxy61.c b/drivers/media/i2c/st-vgxy61.c new file mode 100644 index 000000000000..d3d816189f86 --- /dev/null +++ b/drivers/media/i2c/st-vgxy61.c @@ -0,0 +1,1919 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for VGXY61 global shutter sensor family driver + * + * Copyright (C) 2022 STMicroelectronics SA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define US_PER_MS 1000 + +#define DEVICE_MODEL_ID_REG 0x0000 +#define VG5661_MODEL_ID 0x5661 +#define VG5761_MODEL_ID 0x5761 +#define VGX661_WIDTH 1464 +#define VGX661_HEIGHT 1104 +#define VGX761_WIDTH 1944 +#define VGX761_HEIGHT 1204 +#define VGX661_DEFAULT_MODE 1 +#define VGX761_DEFAULT_MODE 1 +#define VGX661_SHORT_ROT_TERM 93 +#define VGX761_SHORT_ROT_TERM 90 +#define VGXY61_EXPOS_ROT_TERM 66 +#define DEVICE_REVISION 0x0002 +#define DEVICE_FWPATCH_REVISION 0x0014 +#define DEVICE_FWPATCH_START_ADDR 0x2000 +#define DEVICE_SYSTEM_FSM 0x0020 +#define SW_STBY 0x03 +#define STREAMING 0x04 +#define DEVICE_NVM 0x0023 +#define NVM_OK 0x04 +#define DEVICE_THSENS1_TEMPERATURE 0x0044 +#define DEVICE_STBY 0x0201 +#define STBY_NO_REQ 0 +#define STBY_REQ_TMP_READ BIT(2) +#define DEVICE_STREAMING 0x0202 +#define REQ_NO_REQUEST 0 +#define REQ_STOP_STREAMING BIT(0) +#define REQ_START_STREAMING BIT(1) +#define DEVICE_EXT_CLOCK 0x0220 +#define DEVICE_CLK_PLL_PREDIV 0x0224 +#define DEVICE_CLK_SYS_PLL_MULT 0x0225 +#define DEVICE_GPIO_0_CTRL 0x0236 +#define DEVICE_GPIO_1_CTRL 0x0237 +#define DEVICE_GPIO_2_CTRL 0x0238 +#define DEVICE_GPIO_3_CTRL 0x0239 +#define DEVICE_SIGNALS_POLARITY_CTRL 0x023b +#define DEVICE_LINE_LENGTH 0x0300 +#define DEVICE_ORIENTATION 0x0302 +#define DEVICE_VT_CTRL 0x0304 +#define DEVICE_FORMAT_CTRL 0x0305 +#define DEVICE_OIF_CTRL 0x0306 +#define DEVICE_OIF_ROI0_CTRL 0x030a +#define DEVICE_ROI0_START_H 0x0400 +#define DEVICE_ROI0_START_V 0x0402 +#define DEVICE_ROI0_END_H 0x0404 +#define DEVICE_ROI0_END_V 0x0406 +#define DEVICE_PATGEN_CTRL 0x0440 +#define DEVICE_FRAME_CONTENT_CTRL 0x0478 +#define DEVICE_COARSE_EXPOSURE_LONG 0x0500 +#define DEVICE_COARSE_EXPOSURE_SHORT 0x0504 +#define DEVICE_ANALOG_GAIN 0x0508 +#define DEVICE_DIGITAL_GAIN_LONG 0x050a +#define DEVICE_DIGITAL_GAIN_SHORT 0x0512 +#define DEVICE_FRAME_LENGTH 0x051a +#define DEVICE_SIGNALS_CTRL 0x0522 +#define DEVICE_STROBE_LONG_START_DELAY 0x0528 +#define DEVICE_STROBE_LONG_END_DELAY 0x052a +#define DEVICE_STROBE_SHORT_START_DELAY 0x052c +#define DEVICE_STROBE_SHORT_END_DELAY 0x052e +#define DEVICE_READOUT_CTRL 0x0530 +#define DEVICE_HDR_CTRL 0x0532 +#define DEVICE_PATGEN_LONG_DATA_GR 0x092c +#define DEVICE_PATGEN_LONG_DATA_R 0x092e +#define DEVICE_PATGEN_LONG_DATA_B 0x0930 +#define DEVICE_PATGEN_LONG_DATA_GB 0x0932 +#define DEVICE_PATGEN_SHORT_DATA_GR 0x0950 +#define DEVICE_PATGEN_SHORT_DATA_R 0x0952 +#define DEVICE_PATGEN_SHORT_DATA_B 0x0954 +#define DEVICE_PATGEN_SHORT_DATA_GB 0x0956 +#define DEVICE_BYPASS_CTRL 0x0a60 + +#define V4L2_CID_HDR (V4L2_CID_USER_BASE | 0x1004) +#define V4L2_CID_GPIOS_STROBE_LONG_START_DELAY (V4L2_CID_USER_BASE | 0x1019) +#define V4L2_CID_GPIOS_STROBE_LONG_END_DELAY (V4L2_CID_USER_BASE | 0x101a) +#define V4L2_CID_GPIOS_STROBE_SHORT_START_DELAY (V4L2_CID_USER_BASE | 0x101b) +#define V4L2_CID_GPIOS_STROBE_SHORT_END_DELAY (V4L2_CID_USER_BASE | 0x101c) +#define V4L2_CID_TEMPERATURE (V4L2_CID_USER_BASE | 0x1020) + +#define DEVICE_FWPATCH_REVISION_MAJOR 2 +#define DEVICE_FWPATCH_REVISION_MINOR 0 +#define DEVICE_FWPATCH_REVISION_MICRO 5 + +#define WRITE_MULTIPLE_CHUNK_MAX 16 +#define NB_GPIOS 4 +#define NB_POLARITIES 5 + +static const u8 patch_array[] = { + 0xbf, 0x00, 0x05, 0x20, 0x06, 0x01, 0xe0, 0xe0, 0x04, 0x80, 0xe6, 0x45, + 0xed, 0x6f, 0xfe, 0xff, 0x14, 0x80, 0x1f, 0x84, 0x10, 0x42, 0x05, 0x7c, + 0x01, 0xc4, 0x1e, 0x80, 0xb6, 0x42, 0x00, 0xe0, 0x1e, 0x82, 0x1e, 0xc0, + 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x00, 0xfa, 0x86, 0x0d, 0x70, 0xe1, + 0x04, 0x98, 0x15, 0x00, 0x28, 0xe0, 0x14, 0x02, 0x08, 0xfc, 0x15, 0x40, + 0x28, 0xe0, 0x98, 0x58, 0xe0, 0xef, 0x04, 0x98, 0x0e, 0x04, 0x00, 0xf0, + 0x15, 0x00, 0x28, 0xe0, 0x19, 0xc8, 0x15, 0x40, 0x28, 0xe0, 0xc6, 0x41, + 0xfc, 0xe0, 0x14, 0x80, 0x1f, 0x84, 0x14, 0x02, 0xa0, 0xfc, 0x1e, 0x80, + 0x14, 0x80, 0x14, 0x02, 0x80, 0xfb, 0x14, 0x02, 0xe0, 0xfc, 0x1e, 0x80, + 0x14, 0xc0, 0x1f, 0x84, 0x14, 0x02, 0xa4, 0xfc, 0x1e, 0xc0, 0x14, 0xc0, + 0x14, 0x02, 0x80, 0xfb, 0x14, 0x02, 0xe4, 0xfc, 0x1e, 0xc0, 0x0c, 0x0c, + 0x00, 0xf2, 0x93, 0xdd, 0x86, 0x00, 0xf8, 0xe0, 0x04, 0x80, 0xc6, 0x03, + 0x70, 0xe1, 0x0e, 0x84, 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x00, 0xfa, + 0x6b, 0x80, 0x06, 0x40, 0x6c, 0xe1, 0x04, 0x80, 0x09, 0x00, 0xe0, 0xe0, + 0x0b, 0xa1, 0x95, 0x84, 0x05, 0x0c, 0x1c, 0xe0, 0x86, 0x02, 0xf9, 0x60, + 0xe0, 0xcf, 0x78, 0x6e, 0x80, 0xef, 0x25, 0x0c, 0x18, 0xe0, 0x05, 0x4c, + 0x1c, 0xe0, 0x86, 0x02, 0xf9, 0x60, 0xe0, 0xcf, 0x0b, 0x84, 0xd8, 0x6d, + 0x80, 0xef, 0x05, 0x4c, 0x18, 0xe0, 0x04, 0xd8, 0x0b, 0xa5, 0x95, 0x84, + 0x05, 0x0c, 0x2c, 0xe0, 0x06, 0x02, 0x01, 0x60, 0xe0, 0xce, 0x18, 0x6d, + 0x80, 0xef, 0x25, 0x0c, 0x30, 0xe0, 0x05, 0x4c, 0x2c, 0xe0, 0x06, 0x02, + 0x01, 0x60, 0xe0, 0xce, 0x0b, 0x84, 0x78, 0x6c, 0x80, 0xef, 0x05, 0x4c, + 0x30, 0xe0, 0x0c, 0x0c, 0x00, 0xf2, 0x93, 0xdd, 0x46, 0x01, 0x70, 0xe1, + 0x08, 0x80, 0x0b, 0xa1, 0x08, 0x5c, 0x00, 0xda, 0x06, 0x01, 0x68, 0xe1, + 0x04, 0x80, 0x4a, 0x40, 0x84, 0xe0, 0x08, 0x5c, 0x00, 0x9a, 0x06, 0x01, + 0xe0, 0xe0, 0x04, 0x80, 0x15, 0x00, 0x60, 0xe0, 0x19, 0xc4, 0x15, 0x40, + 0x60, 0xe0, 0x15, 0x00, 0x78, 0xe0, 0x19, 0xc4, 0x15, 0x40, 0x78, 0xe0, + 0x93, 0xdd, 0xc3, 0xc1, 0x46, 0x01, 0x70, 0xe1, 0x08, 0x80, 0x0b, 0xa1, + 0x08, 0x5c, 0x00, 0xda, 0x06, 0x01, 0x68, 0xe1, 0x04, 0x80, 0x4a, 0x40, + 0x84, 0xe0, 0x08, 0x5c, 0x00, 0x9a, 0x06, 0x01, 0xe0, 0xe0, 0x14, 0x80, + 0x25, 0x02, 0x54, 0xe0, 0x29, 0xc4, 0x25, 0x42, 0x54, 0xe0, 0x24, 0x80, + 0x35, 0x04, 0x6c, 0xe0, 0x39, 0xc4, 0x35, 0x44, 0x6c, 0xe0, 0x25, 0x02, + 0x64, 0xe0, 0x29, 0xc4, 0x25, 0x42, 0x64, 0xe0, 0x04, 0x80, 0x15, 0x00, + 0x7c, 0xe0, 0x19, 0xc4, 0x15, 0x40, 0x7c, 0xe0, 0x93, 0xdd, 0xc3, 0xc1, + 0x4c, 0x04, 0x7c, 0xfa, 0x86, 0x40, 0x98, 0xe0, 0x14, 0x80, 0x1b, 0xa1, + 0x06, 0x00, 0x00, 0xc0, 0x08, 0x42, 0x38, 0xdc, 0x08, 0x64, 0xa0, 0xef, + 0x86, 0x42, 0x3c, 0xe0, 0x68, 0x49, 0x80, 0xef, 0x6b, 0x80, 0x78, 0x53, + 0xc8, 0xef, 0xc6, 0x54, 0x6c, 0xe1, 0x7b, 0x80, 0xb5, 0x14, 0x0c, 0xf8, + 0x05, 0x14, 0x14, 0xf8, 0x1a, 0xac, 0x8a, 0x80, 0x0b, 0x90, 0x38, 0x55, + 0x80, 0xef, 0x1a, 0xae, 0x17, 0xc2, 0x03, 0x82, 0x88, 0x65, 0x80, 0xef, + 0x1b, 0x80, 0x0b, 0x8e, 0x68, 0x65, 0x80, 0xef, 0x9b, 0x80, 0x0b, 0x8c, + 0x08, 0x65, 0x80, 0xef, 0x6b, 0x80, 0x0b, 0x92, 0x1b, 0x8c, 0x98, 0x64, + 0x80, 0xef, 0x1a, 0xec, 0x9b, 0x80, 0x0b, 0x90, 0x95, 0x54, 0x10, 0xe0, + 0xa8, 0x53, 0x80, 0xef, 0x1a, 0xee, 0x17, 0xc2, 0x03, 0x82, 0xf8, 0x63, + 0x80, 0xef, 0x1b, 0x80, 0x0b, 0x8e, 0xd8, 0x63, 0x80, 0xef, 0x1b, 0x8c, + 0x68, 0x63, 0x80, 0xef, 0x6b, 0x80, 0x0b, 0x92, 0x65, 0x54, 0x14, 0xe0, + 0x08, 0x65, 0x84, 0xef, 0x68, 0x63, 0x80, 0xef, 0x7b, 0x80, 0x0b, 0x8c, + 0xa8, 0x64, 0x84, 0xef, 0x08, 0x63, 0x80, 0xef, 0x14, 0xe8, 0x46, 0x44, + 0x94, 0xe1, 0x24, 0x88, 0x4a, 0x4e, 0x04, 0xe0, 0x14, 0xea, 0x1a, 0x04, + 0x08, 0xe0, 0x0a, 0x40, 0x84, 0xed, 0x0c, 0x04, 0x00, 0xe2, 0x4a, 0x40, + 0x04, 0xe0, 0x19, 0x16, 0xc0, 0xe0, 0x0a, 0x40, 0x84, 0xed, 0x21, 0x54, + 0x60, 0xe0, 0x0c, 0x04, 0x00, 0xe2, 0x1b, 0xa5, 0x0e, 0xea, 0x01, 0x89, + 0x21, 0x54, 0x64, 0xe0, 0x7e, 0xe8, 0x65, 0x82, 0x1b, 0xa7, 0x26, 0x00, + 0x00, 0x80, 0xa5, 0x82, 0x1b, 0xa9, 0x65, 0x82, 0x1b, 0xa3, 0x01, 0x85, + 0x16, 0x00, 0x00, 0xc0, 0x01, 0x54, 0x04, 0xf8, 0x06, 0xaa, 0x01, 0x83, + 0x06, 0xa8, 0x65, 0x81, 0x06, 0xa8, 0x01, 0x54, 0x04, 0xf8, 0x01, 0x83, + 0x06, 0xaa, 0x09, 0x14, 0x18, 0xf8, 0x0b, 0xa1, 0x05, 0x84, 0xc6, 0x42, + 0xd4, 0xe0, 0x14, 0x84, 0x01, 0x83, 0x01, 0x54, 0x60, 0xe0, 0x01, 0x54, + 0x64, 0xe0, 0x0b, 0x02, 0x90, 0xe0, 0x10, 0x02, 0x90, 0xe5, 0x01, 0x54, + 0x88, 0xe0, 0xb5, 0x81, 0xc6, 0x40, 0xd4, 0xe0, 0x14, 0x80, 0x0b, 0x02, + 0xe0, 0xe4, 0x10, 0x02, 0x31, 0x66, 0x02, 0xc0, 0x01, 0x54, 0x88, 0xe0, + 0x1a, 0x84, 0x29, 0x14, 0x10, 0xe0, 0x1c, 0xaa, 0x2b, 0xa1, 0xf5, 0x82, + 0x25, 0x14, 0x10, 0xf8, 0x2b, 0x04, 0xa8, 0xe0, 0x20, 0x44, 0x0d, 0x70, + 0x03, 0xc0, 0x2b, 0xa1, 0x04, 0x00, 0x80, 0x9a, 0x02, 0x40, 0x84, 0x90, + 0x03, 0x54, 0x04, 0x80, 0x4c, 0x0c, 0x7c, 0xf2, 0x93, 0xdd, 0x00, 0x00, + 0x02, 0xa9, 0x00, 0x00, 0x64, 0x4a, 0x40, 0x00, 0x08, 0x2d, 0x58, 0xe0, + 0xa8, 0x98, 0x40, 0x00, 0x28, 0x07, 0x34, 0xe0, 0x05, 0xb9, 0x00, 0x00, + 0x28, 0x00, 0x41, 0x05, 0x88, 0x00, 0x41, 0x3c, 0x98, 0x00, 0x41, 0x52, + 0x04, 0x01, 0x41, 0x79, 0x3c, 0x01, 0x41, 0x6a, 0x3d, 0xfe, 0x00, 0x00, +}; + +static const char * const vgxy61_test_pattern_menu[] = { + "Disabled", + "Solid", + "Colorbar", + "Gradbar", + "Hgrey", + "Vgrey", + "Dgrey", + "PN28", +}; + +static const char * const vgxy61_hdr_modes[] = { + "HDR linearize", + "HDR substraction", + "no HDR", +}; + +/* Regulator supplies */ +static const char * const vgxy61_supply_name[] = { + "VCORE", + "VDDIO", + "VANA", +}; + +static const s64 link_freq[] = { + /* + * MIPI output freq is 804Mhz / 2, as it uses both rising edge and falling edges to send + * data + */ + 402000000ULL +}; + +#define VGXY61_NUM_SUPPLIES ARRAY_SIZE(vgxy61_supply_name) + +/* Macro to convert index to 8.8 fixed point gain */ +#define I2FP(i) ((u32)(8192.0 / (32 - (i)))) +/* Array of possibles analog gains in 8.8 fixed point */ +static const u16 analog_gains[] = { + I2FP(0), I2FP(1), I2FP(2), I2FP(3), I2FP(4), I2FP(5), I2FP(6), I2FP(7), I2FP(8), I2FP(9), + I2FP(10), I2FP(11), I2FP(12), I2FP(13), I2FP(14), I2FP(15), I2FP(16), +}; + +enum bin_mode { + BIN_MODE_NORMAL, + BIN_MODE_DIGITAL_X2, + BIN_MODE_DIGITAL_X4, + BIN_MODE_ANALOG_SUB_X2, + BIN_MODE_ANALOG_SUB_X4, +}; + +enum hdr { + HDR_LINEAR, + HDR_SUB, + NO_HDR, +}; + +enum strobe_modes { + STROBE_DISABLED, + STROBE_LONG, + STROBE_ENABLED, +}; + +struct vgxy61_mode_info { + u32 width; + u32 height; + enum bin_mode bin_mode; +}; + +static const u32 vgxy61_supported_codes[] = { + MEDIA_BUS_FMT_SGBRG8_1X8, + MEDIA_BUS_FMT_SGBRG10_1X10, + MEDIA_BUS_FMT_SGBRG12_1X12, + MEDIA_BUS_FMT_SGBRG14_1X14, + MEDIA_BUS_FMT_SGBRG16_1X16 +}; + +const int vgx761_sensor_frame_rates[] = {75, 60, 30, 15, 10, 5, 2}; +const int vgx661_sensor_frame_rates[] = {60, 30, 15, 10, 5, 2}; + +static const struct vgxy61_mode_info vgx661_mode_data[] = { + {1464, 1104, BIN_MODE_NORMAL}, + {1280, 720, BIN_MODE_NORMAL}, + { 640, 480, BIN_MODE_DIGITAL_X2}, + { 320, 240, BIN_MODE_DIGITAL_X4}, +}; + +static const struct vgxy61_mode_info vgx761_mode_data[] = { + {1944, 1204, BIN_MODE_NORMAL}, + {1920, 1080, BIN_MODE_NORMAL}, + {1280, 720, BIN_MODE_NORMAL}, + { 640, 480, BIN_MODE_DIGITAL_X2}, + { 320, 240, BIN_MODE_DIGITAL_X4}, +}; + +struct gpios_ctrls { + struct v4l2_ctrl *long_start; + struct v4l2_ctrl *long_end; + struct v4l2_ctrl *short_start; + struct v4l2_ctrl *short_end; +}; + +struct vgxy61_ctrls { + struct v4l2_ctrl_handler handler; + struct v4l2_ctrl *exposure; + struct v4l2_ctrl *analog_gain; + struct v4l2_ctrl *digital_gain; + struct gpios_ctrls gpios; + struct v4l2_ctrl *vflip; + struct v4l2_ctrl *hflip; + struct v4l2_ctrl *patgen; + struct v4l2_ctrl *hdr; + struct v4l2_ctrl *pixel_rate; + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *temp; +}; + +struct vgxy61_dev { + struct i2c_client *i2c_client; + struct v4l2_subdev sd; + struct media_pad pad; + struct regulator_bulk_data supplies[VGXY61_NUM_SUPPLIES]; + struct gpio_desc *reset_gpio; + struct clk *xclk; + u32 clk_freq; + int sensor_width; + int sensor_height; + u16 oif_ctrl; + int nb_of_lane; + int data_rate_in_mbps; + int pclk; + u16 line_length; + int rot_term; + bool gpios_polarity; + bool slave_mode; + /* Lock to protect all members below */ + struct mutex lock; + struct vgxy61_ctrls ctrls; + bool streaming; + struct v4l2_mbus_framefmt fmt; + const struct vgxy61_mode_info *sensor_modes; + int sensor_modes_nb; + const struct vgxy61_mode_info *current_mode; + const int *sensor_rates; + int sensor_rates_nb; + struct v4l2_fract frame_interval; + bool hflip; + bool vflip; + enum hdr hdr; + int expo_long; + int expo_short; +}; + +static u8 get_bpp_by_code(__u32 code) +{ + switch (code) { + case MEDIA_BUS_FMT_SGBRG8_1X8: + return 8; + case MEDIA_BUS_FMT_SGBRG10_1X10: + return 10; + case MEDIA_BUS_FMT_SGBRG12_1X12: + return 12; + case MEDIA_BUS_FMT_SGBRG14_1X14: + return 14; + case MEDIA_BUS_FMT_SGBRG16_1X16: + return 16; + default: + /* Should never happen */ + WARN(1, "Unsupported code %d. default to 8 bpp", code); + return 8; + } +} + +static u8 get_data_type_by_code(__u32 code) +{ + switch (code) { + case MEDIA_BUS_FMT_SGBRG8_1X8: + return MIPI_CSI2_DT_RAW8; + case MEDIA_BUS_FMT_SGBRG10_1X10: + return MIPI_CSI2_DT_RAW10; + case MEDIA_BUS_FMT_SGBRG12_1X12: + return MIPI_CSI2_DT_RAW12; + case MEDIA_BUS_FMT_SGBRG14_1X14: + return MIPI_CSI2_DT_RAW14; + case MEDIA_BUS_FMT_SGBRG16_1X16: + return MIPI_CSI2_DT_RAW16; + default: + /* Should never happen */ + WARN(1, "Unsupported code %d. default to MIPI_CSI2_DT_RAW8 data type", code); + return MIPI_CSI2_DT_RAW8; + } +} + +static void compute_pll_parameters_by_freq(u32 freq, unsigned int *prediv, unsigned int *mult) +{ + const unsigned int predivs[] = {1, 2, 4}; + int i; + + /* + * Freq range is [6Mhz-27Mhz] already checked. + * Output of divider should be in [6Mhz-12Mhz[. + */ + for (i = 0; i < ARRAY_SIZE(predivs); i++) { + *prediv = predivs[i]; + if (freq / *prediv < 12 * HZ_PER_MHZ) + break; + } + WARN_ON(i == ARRAY_SIZE(predivs)); + + /* + * Target freq is 804Mhz. Don't change this as it will impact image quality. + */ + *mult = ((804 * HZ_PER_MHZ) * (*prediv) + freq / 2) / freq; +} + +static s32 get_pixel_rate(struct vgxy61_dev *sensor) +{ + return div64_u64((u64)sensor->data_rate_in_mbps * sensor->nb_of_lane, + get_bpp_by_code(sensor->fmt.code)); +} + +static inline struct vgxy61_dev *to_vgxy61_dev(struct v4l2_subdev *sd) +{ + return container_of(sd, struct vgxy61_dev, sd); +} + +static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl) +{ + return &container_of(ctrl->handler, struct vgxy61_dev, ctrls.handler)->sd; +} + +static int get_chunk_size(struct vgxy61_dev *sensor) +{ + struct i2c_adapter *adapter = sensor->i2c_client->adapter; + int max_write_len = WRITE_MULTIPLE_CHUNK_MAX; + + if (adapter->quirks && adapter->quirks->max_write_len) + max_write_len = adapter->quirks->max_write_len - 2; + + max_write_len = min(max_write_len, WRITE_MULTIPLE_CHUNK_MAX); + + return max(max_write_len, 1); +} + +static int vgxy61_read_multiple(struct vgxy61_dev *sensor, u16 reg, u8 *val, int len) +{ + struct i2c_client *client = sensor->i2c_client; + struct i2c_msg msg[2]; + u8 buf[2]; + int ret; + + buf[0] = reg >> 8; + buf[1] = reg & 0xff; + + msg[0].addr = client->addr; + msg[0].flags = client->flags; + msg[0].buf = buf; + msg[0].len = sizeof(buf); + + msg[1].addr = client->addr; + msg[1].flags = client->flags | I2C_M_RD; + msg[1].buf = val; + msg[1].len = len; + + ret = i2c_transfer(client->adapter, msg, 2); + if (ret < 0) { + dev_dbg(&client->dev, "%s: %x i2c_transfer, reg: %x => %d\n", __func__, + client->addr, reg, ret); + return ret; + } + + return 0; +} + +static inline int vgxy61_read_reg(struct vgxy61_dev *sensor, u16 reg, u8 *val) +{ + return vgxy61_read_multiple(sensor, reg, val, sizeof(*val)); +} + +static inline int vgxy61_read_reg16(struct vgxy61_dev *sensor, u16 reg, u16 *val) +{ + return vgxy61_read_multiple(sensor, reg, (u8 *)val, sizeof(*val)); +} + +static int vgxy61_write_multiple(struct vgxy61_dev *sensor, u16 reg, const u8 *data, int len) +{ + struct i2c_client *client = sensor->i2c_client; + struct i2c_msg msg; + u8 buf[WRITE_MULTIPLE_CHUNK_MAX + 2]; + int i; + int ret; + + if (len > WRITE_MULTIPLE_CHUNK_MAX) + return -EINVAL; + buf[0] = reg >> 8; + buf[1] = reg & 0xff; + for (i = 0; i < len; i++) + buf[i + 2] = data[i]; + + msg.addr = client->addr; + msg.flags = client->flags; + msg.buf = buf; + msg.len = len + 2; + + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret < 0) { + dev_dbg(&client->dev, "%s: i2c_transfer, reg: %x => %d\n", __func__, reg, ret); + return ret; + } + + return 0; +} + +static int vgxy61_write_array(struct vgxy61_dev *sensor, u16 reg, int nb, const u8 *array) +{ + const int chunk_size = get_chunk_size(sensor); + int ret; + int sz; + + while (nb) { + sz = min(nb, chunk_size); + ret = vgxy61_write_multiple(sensor, reg, array, sz); + if (ret < 0) + return ret; + nb -= sz; + reg += sz; + array += sz; + } + + return 0; +} + +static inline int vgxy61_write_reg(struct vgxy61_dev *sensor, u16 reg, u8 val) +{ + return vgxy61_write_multiple(sensor, reg, &val, sizeof(val)); +} + +static inline int vgxy61_write_reg16(struct vgxy61_dev *sensor, u16 reg, u16 val) +{ + return vgxy61_write_multiple(sensor, reg, (u8 *)&val, sizeof(val)); +} + +static inline int vgxy61_write_reg32(struct vgxy61_dev *sensor, u16 reg, u32 val) +{ + return vgxy61_write_multiple(sensor, reg, (u8 *)&val, sizeof(val)); +} + +static int vgxy61_poll_reg(struct vgxy61_dev *sensor, u16 reg, u8 poll_val) +{ + const int loop_delay_ms = 10; + const int timeout_ms = 500; + u8 val; + int ret, timeout; + + timeout = read_poll_timeout(vgxy61_read_reg, ret, ((ret != 0) || (val == poll_val)), + loop_delay_ms * US_PER_MS, timeout_ms * US_PER_MS, false, + sensor, reg, &val); + if (timeout) + return timeout; + + return ret; +} + +static int vgxy61_wait_state(struct vgxy61_dev *sensor, int state) +{ + return vgxy61_poll_reg(sensor, DEVICE_SYSTEM_FSM, state); +} + +static int vgxy61_check_bw(struct vgxy61_dev *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + /* Correction factor for time required between 2 lines */ + const int mipi_margin = 1056; + int binning_scale = 1 << sensor->current_mode->bin_mode; + int bpp = get_bpp_by_code(sensor->fmt.code); + int max_bit_per_line; + int bit_per_line; + u64 line_rate; + + line_rate = sensor->nb_of_lane * (u64)sensor->data_rate_in_mbps * sensor->line_length; + max_bit_per_line = div64_u64(line_rate, sensor->pclk) - mipi_margin; + bit_per_line = (bpp * sensor->current_mode->width) / binning_scale; + + dev_dbg(&client->dev, "max_bit_per_line = %d\n", max_bit_per_line); + dev_dbg(&client->dev, "required bit_per_line = %d\n", bit_per_line); + + return bit_per_line > max_bit_per_line ? -EINVAL : 0; +} + +static int apply_exposure(struct vgxy61_dev *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + int ret; + + /* We first set expo to zero to avoid forbidden parameters couple */ + ret = vgxy61_write_reg16(sensor, DEVICE_COARSE_EXPOSURE_SHORT, 0); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_COARSE_EXPOSURE_LONG, sensor->expo_long); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_COARSE_EXPOSURE_SHORT, sensor->expo_short); + if (ret) + return ret; + + dev_dbg(&client->dev, "%s applied expo %d (short: %d)\n", __func__, + sensor->expo_long, sensor->expo_short); + + return 0; +} + +static int set_frame_rate(struct vgxy61_dev *sensor) +{ + u16 frame_length; + + frame_length = sensor->pclk / (sensor->line_length * sensor->frame_interval.denominator); + + return vgxy61_write_reg16(sensor, DEVICE_FRAME_LENGTH, frame_length); +} + +static int vgxy61_get_regulators(struct vgxy61_dev *sensor) +{ + int i; + + for (i = 0; i < VGXY61_NUM_SUPPLIES; i++) + sensor->supplies[i].supply = vgxy61_supply_name[i]; + + return devm_regulator_bulk_get(&sensor->i2c_client->dev, VGXY61_NUM_SUPPLIES, + sensor->supplies); +} + +static int vgxy61_apply_reset(struct vgxy61_dev *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + + dev_dbg(&client->dev, "%s applied reset\n", __func__); + gpiod_set_value_cansleep(sensor->reset_gpio, 0); + usleep_range(5000, 10000); + gpiod_set_value_cansleep(sensor->reset_gpio, 1); + usleep_range(5000, 10000); + gpiod_set_value_cansleep(sensor->reset_gpio, 0); + usleep_range(40000, 100000); + return vgxy61_wait_state(sensor, SW_STBY); +} + +static int vgxy61_try_fmt_internal(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *fmt, + const struct vgxy61_mode_info **new_mode) +{ + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + const struct vgxy61_mode_info *mode = sensor->sensor_modes; + unsigned int index; + + /* Select code */ + for (index = 0; index < ARRAY_SIZE(vgxy61_supported_codes); index++) { + if (vgxy61_supported_codes[index] == fmt->code) + break; + } + if (index == ARRAY_SIZE(vgxy61_supported_codes)) + index = 0; + + /* Select size */ + do { + if (mode->width <= fmt->width && mode->height <= fmt->height) + break; + } while ((++mode)->width); + if (!mode->width) + mode--; + + *new_mode = mode; + fmt->code = vgxy61_supported_codes[index]; + fmt->width = mode->width; + fmt->height = mode->height; + fmt->colorspace = V4L2_COLORSPACE_SRGB; + fmt->field = V4L2_FIELD_NONE; + + return 0; +} + +static int vgxy61_stream_enable(struct vgxy61_dev *sensor) +{ + int center_x = sensor->sensor_width / 2; + int center_y = sensor->sensor_height / 2; + int scale = 1 << sensor->current_mode->bin_mode; + int width = sensor->current_mode->width * scale; + int height = sensor->current_mode->height * scale; + int ret; + + ret = vgxy61_check_bw(sensor); + if (ret) + return ret; + + /* Configure sensor */ + ret = vgxy61_write_reg(sensor, DEVICE_FORMAT_CTRL, get_bpp_by_code(sensor->fmt.code)); + if (ret) + return ret; + ret = vgxy61_write_reg(sensor, DEVICE_OIF_ROI0_CTRL, + get_data_type_by_code(sensor->fmt.code)); + if (ret) + return ret; + + ret = vgxy61_write_reg(sensor, DEVICE_READOUT_CTRL, sensor->current_mode->bin_mode); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_ROI0_START_H, center_x - width / 2); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_ROI0_END_H, center_x + width / 2 - 1); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_ROI0_START_V, center_y - height / 2); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_ROI0_END_V, center_y + height / 2 - 1); + if (ret) + return ret; + + ret = set_frame_rate(sensor); + if (ret) + return ret; + + ret = apply_exposure(sensor); + if (ret) + return ret; + + /* Start streaming */ + ret = vgxy61_write_reg(sensor, DEVICE_STREAMING, REQ_START_STREAMING); + if (ret) + return ret; + + ret = vgxy61_poll_reg(sensor, DEVICE_STREAMING, REQ_NO_REQUEST); + if (ret) + return ret; + + ret = vgxy61_wait_state(sensor, STREAMING); + if (ret) + return ret; + + return 0; +} + +static int vgxy61_stream_disable(struct vgxy61_dev *sensor) +{ + int ret; + + ret = vgxy61_write_reg(sensor, DEVICE_STREAMING, REQ_STOP_STREAMING); + if (ret) + return ret; + + ret = vgxy61_poll_reg(sensor, DEVICE_STREAMING, REQ_NO_REQUEST); + if (ret) + return ret; + + ret = vgxy61_wait_state(sensor, SW_STBY); + if (ret) + return ret; + + return 0; +} + +static int vgxy61_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + struct i2c_client *client = sensor->i2c_client; + int ret = 0; + + mutex_lock(&sensor->lock); + dev_dbg(&client->dev, "%s : requested %d / current = %d\n", __func__, enable, + sensor->streaming); + if (sensor->streaming == enable) + goto out; + + ret = enable ? vgxy61_stream_enable(sensor) : vgxy61_stream_disable(sensor); + if (!ret) + sensor->streaming = enable; + +out: + dev_dbg(&client->dev, "%s current now = %d / %d\n", __func__, sensor->streaming, ret); + mutex_unlock(&sensor->lock); + + return ret; +} + +static int vgxy61_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) +{ + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + + mutex_lock(&sensor->lock); + fi->interval = sensor->frame_interval; + mutex_unlock(&sensor->lock); + + return 0; +} + +static int vgxy61_s_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) +{ + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + struct i2c_client *client = sensor->i2c_client; + u64 req_int, err, min_err = ~0ULL; + u64 test_int; + int i = 0; + int ret; + + if (fi->interval.denominator == 0) + return -EINVAL; + + mutex_lock(&sensor->lock); + + if (sensor->streaming) { + ret = -EBUSY; + goto out; + } + + dev_dbg(&client->dev, "%s request %d/%d\n", __func__, + fi->interval.numerator, fi->interval.denominator); + /* Find nearest period */ + req_int = div64_u64((u64)(fi->interval.numerator * 10000), fi->interval.denominator); + for (i = 0; i < sensor->sensor_rates_nb; i++) { + test_int = div64_u64((u64)10000, sensor->sensor_rates[i]); + err = abs(test_int - req_int); + if (err < min_err) { + fi->interval.numerator = 1; + fi->interval.denominator = sensor->sensor_rates[i]; + min_err = err; + } + } + sensor->frame_interval = fi->interval; + dev_dbg(&client->dev, "%s set %d/%d\n", __func__, + fi->interval.numerator, fi->interval.denominator); + + ret = 0; +out: + mutex_unlock(&sensor->lock); + + return ret; +} + +static int vgxy61_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + struct i2c_client *client = sensor->i2c_client; + + dev_dbg(&client->dev, "%s probe index %d\n", __func__, code->index); + if (code->index >= ARRAY_SIZE(vgxy61_supported_codes)) + return -EINVAL; + + code->code = vgxy61_supported_codes[code->index]; + + return 0; +} + +static int vgxy61_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *format) +{ + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + struct i2c_client *client = sensor->i2c_client; + struct v4l2_mbus_framefmt *fmt; + + dev_dbg(&client->dev, "%s probe %d\n", __func__, format->pad); + dev_dbg(&client->dev, "%s %dx%d\n", __func__, format->format.width, format->format.height); + + mutex_lock(&sensor->lock); + + if (format->which == V4L2_SUBDEV_FORMAT_TRY) + fmt = v4l2_subdev_get_try_format(&sensor->sd, sd_state, format->pad); + else + fmt = &sensor->fmt; + + format->format = *fmt; + + mutex_unlock(&sensor->lock); + + return 0; +} + +static int vgxy61_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *format) +{ + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + struct i2c_client *client = sensor->i2c_client; + const struct vgxy61_mode_info *new_mode; + struct v4l2_mbus_framefmt *fmt; + int ret; + + dev_dbg(&client->dev, "%s probe %d\n", __func__, format->pad); + dev_dbg(&client->dev, "%s %dx%d\n", __func__, format->format.width, format->format.height); + + mutex_lock(&sensor->lock); + + if (sensor->streaming) { + ret = -EBUSY; + goto out; + } + + /* Find best format */ + ret = vgxy61_try_fmt_internal(sd, &format->format, &new_mode); + if (ret) + goto out; + + if (format->which == V4L2_SUBDEV_FORMAT_TRY) + fmt = v4l2_subdev_get_try_format(sd, sd_state, 0); + else + fmt = &sensor->fmt; + *fmt = format->format; + sensor->current_mode = new_mode; + /* Update pixel rate control to reflect new mode */ + __v4l2_ctrl_s_ctrl_int64(sensor->ctrls.pixel_rate, get_pixel_rate(sensor)); + +out: + mutex_unlock(&sensor->lock); + + return ret; +} + +static int vgxy61_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_size_enum *fse) +{ + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + struct i2c_client *client = sensor->i2c_client; + + dev_dbg(&client->dev, "%s for index %d\n", __func__, fse->index); + if (fse->index >= sensor->sensor_modes_nb) + return -EINVAL; + + fse->min_width = sensor->sensor_modes[fse->index].width; + fse->max_width = fse->min_width; + fse->min_height = sensor->sensor_modes[fse->index].height; + fse->max_height = fse->min_height; + + return 0; +} + +static int vgxy61_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_interval_enum *fie) +{ + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + const struct vgxy61_mode_info *mode = sensor->sensor_modes; + + if (fie->index >= sensor->sensor_rates_nb) + return -EINVAL; + do { + if (mode->width == fie->width && mode->height == fie->height) + break; + } while ((++mode)->width); + if (!mode->width) + return -EINVAL; + + fie->interval.numerator = 1; + fie->interval.denominator = sensor->sensor_rates[fie->index]; + + return 0; +} + +static int vgxy61_update_analog_gain(struct vgxy61_dev *sensor, u32 target) +{ + struct i2c_client *client = sensor->i2c_client; + unsigned int idx; + int ret; + + /* Find smallest analog gains which is above or equal to target gain */ + for (idx = 0; idx < ARRAY_SIZE(analog_gains); idx++) { + if (analog_gains[idx] >= target) + break; + } + /* Cap to maximum gain if no matching gain found */ + if (idx == ARRAY_SIZE(analog_gains)) + idx--; + + /* Apply gain */ + ret = vgxy61_write_reg(sensor, DEVICE_ANALOG_GAIN, idx); + if (ret) + return ret; + + dev_dbg(&client->dev, "Target analog gain: 0x%04x\n", target); + dev_dbg(&client->dev, " Set analog gain: 0x%04x\n", analog_gains[idx]); + + return 0; +} + +static int vgxy61_update_digital_gain(struct vgxy61_dev *sensor, u32 target) +{ + struct i2c_client *client = sensor->i2c_client; + int ret; + + /* + * For a monochrome version, configuring DIGITAL_GAIN_LONG_CH0 and + * DIGITAL_GAIN_SHORT_CH0 is enough to configure the gain of all + * four sub pixels. + */ + ret = vgxy61_write_reg16(sensor, DEVICE_DIGITAL_GAIN_LONG, target); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_DIGITAL_GAIN_SHORT, target); + if (ret) + return ret; + + dev_dbg(&client->dev, " Set digital gain: 0x%04x\n", target); + + return 0; +} + +static int vgxy61_update_patgen(struct vgxy61_dev *sensor, u32 index) +{ + u32 pattern = index <= 3 ? index : index + 12; + u32 reg; + + reg = (pattern << 18) | (pattern << 4); + if (index) + reg |= (1 << 16) | 1; + return vgxy61_write_reg32(sensor, DEVICE_PATGEN_CTRL, reg); +} + +static int vgxy61_update_gpiox_strobe_mode(struct vgxy61_dev *sensor, enum strobe_modes mode, + int idx) +{ + const u8 index2val[] = {0x0, 0x1, 0x3}; + u16 reg; + int ret; + + ret = vgxy61_read_reg16(sensor, DEVICE_SIGNALS_CTRL, ®); + if (ret) + return ret; + reg &= ~(0xf << (idx * 4)); + reg |= index2val[mode] << (idx * 4); + + return vgxy61_write_reg16(sensor, DEVICE_SIGNALS_CTRL, reg); +} + +static int vgxy61_update_gpios_strobe_mode(struct vgxy61_dev *sensor, enum hdr hdr) +{ + enum strobe_modes strobe_mode; + int i, ret; + + switch (hdr) { + case HDR_LINEAR: + strobe_mode = STROBE_ENABLED; + break; + case HDR_SUB: + case NO_HDR: + strobe_mode = STROBE_LONG; + break; + default: + /* Should never happen */ + WARN_ON(true); + break; + } + + for (i = 0; i < NB_GPIOS; i++) { + ret = vgxy61_update_gpiox_strobe_mode(sensor, strobe_mode, i); + if (ret) + return ret; + } + + return 0; +} + +static int vgxy61_update_gpios_strobe_polarity(struct vgxy61_dev *sensor, int polarity) +{ + struct i2c_client *client = sensor->i2c_client; + int ret; + + if (sensor->streaming) + return -EBUSY; + + dev_dbg(&client->dev, "setting gpios polarity: %d\n", polarity); + + ret = vgxy61_write_reg(sensor, DEVICE_GPIO_0_CTRL, polarity << 1); + if (ret) + return ret; + ret = vgxy61_write_reg(sensor, DEVICE_GPIO_1_CTRL, polarity << 1); + if (ret) + return ret; + ret = vgxy61_write_reg(sensor, DEVICE_GPIO_2_CTRL, polarity << 1); + if (ret) + return ret; + ret = vgxy61_write_reg(sensor, DEVICE_GPIO_3_CTRL, polarity << 1); + if (ret) + return ret; + return vgxy61_write_reg(sensor, DEVICE_SIGNALS_POLARITY_CTRL, polarity); +} + +static int find_max_long_exposure(struct vgxy61_dev *sensor, int frame_length, int short_expo_ratio) +{ + int first_rot_max_expo; + int second_rot_max_expo; + + /* + * Apply first rule of thumb: + * frame_length < short_line_nb + sensor->sensor_height + sensor->rot_term + * with short_line_nb = long_line_nb / short_expo_ratio + */ + first_rot_max_expo = ((frame_length - sensor->sensor_height - sensor->rot_term) * + short_expo_ratio) - 1; + + /* + * Apply second rule of thumb + * frame_length < short_line_nb + long_line_nb + VGXY61_EXPOS_ROT_TERM + * with short_line_nb = long_line_nb / short_expo_ratio + */ + second_rot_max_expo = (((frame_length - VGXY61_EXPOS_ROT_TERM) * short_expo_ratio) / + (short_expo_ratio + 1)) - 1; + + /* Take the minimum of both rules */ + return min(first_rot_max_expo, second_rot_max_expo); +} + +static int vgxy61_update_exposure(struct vgxy61_dev *sensor, int long_expo_line_nb, enum hdr hdr, + bool clamp) +{ + struct i2c_client *client = sensor->i2c_client; + int max_long_expo; + int max_short_expo = 0; + int short_expo_line_nb = 0; + /* We use a constant ratio of 10 for linear HDR mode */ + int hdr_linear_ratio = 10; + u16 frame_length; + int ret; + + ret = vgxy61_read_reg16(sensor, DEVICE_FRAME_LENGTH, &frame_length); + if (ret) + return ret; + + /* Long and short integration times must not be less than 10 lines */ + long_expo_line_nb = max(10, long_expo_line_nb); + long_expo_line_nb = min_t(int, frame_length, long_expo_line_nb); + + /* Compute short exposure according to hdr mode and long exposure */ + switch (hdr) { + case HDR_LINEAR: + max_long_expo = find_max_long_exposure(sensor, frame_length, hdr_linear_ratio); + max_short_expo = (max_long_expo + (hdr_linear_ratio / 2)) / hdr_linear_ratio; + short_expo_line_nb = (long_expo_line_nb + (hdr_linear_ratio / 2)) / + hdr_linear_ratio; + break; + case HDR_SUB: + max_long_expo = find_max_long_exposure(sensor, frame_length, 1); + max_short_expo = max_long_expo; + short_expo_line_nb = long_expo_line_nb; + break; + case NO_HDR: + /* + * As short expo is 0 here, only the second rule of thumb applies, see + * find_max_long_exposure for more + */ + max_long_expo = frame_length - VGXY61_EXPOS_ROT_TERM; + break; + default: + /* Should never happen */ + WARN_ON(true); + break; + } + + if (long_expo_line_nb > max_long_expo) { + if (!clamp) { + dev_err(&client->dev, "Exposure %d too high (max for this hdr mode %d)\n", + long_expo_line_nb, max_long_expo); + return -EINVAL; + } + dev_warn(&client->dev, "Exposure %d too high for this hdr mode, clamping to %d\n", + long_expo_line_nb, max_long_expo); + long_expo_line_nb = max_long_expo; + short_expo_line_nb = max_short_expo; + } + + dev_dbg(&client->dev, "frame_length %d, long_expo_line_nb %d, short_expo_line_nb %d", + frame_length, long_expo_line_nb, short_expo_line_nb); + + /* Apply exposure */ + sensor->expo_long = long_expo_line_nb; + sensor->expo_short = short_expo_line_nb; + + if (sensor->streaming) + return apply_exposure(sensor); + return 0; +} + +static int vgxy61_update_hdr(struct vgxy61_dev *sensor, u32 index) +{ + const u8 index2val[] = {0x1, 0x4, 0xa}; + int ret; + + /* + * Short exposure changes according to HDR mode, do it first as it can + * violate sensors 'rule of thumbs' and therefore will require to change + * the long exposure + */ + ret = vgxy61_update_exposure(sensor, sensor->expo_long, index, true); + if (ret) + return ret; + + /* Update strobe mode according to HDR */ + ret = vgxy61_update_gpios_strobe_mode(sensor, index); + if (ret) + return ret; + + ret = vgxy61_write_reg(sensor, DEVICE_HDR_CTRL, index2val[index]); + if (ret) + return ret; + sensor->hdr = index; + + return 0; +} + +static int vgxy61_get_temp_stream_enabled(struct vgxy61_dev *sensor, int *temp) +{ + int ret; + u16 temperature; + + ret = vgxy61_read_reg16(sensor, DEVICE_THSENS1_TEMPERATURE, &temperature); + if (ret) + return ret; + + /* Temperature is expressed in Kelvin in Q10.2 fixed point format*/ + temperature = (temperature & 0x0fff) >> 2; + temperature = kelvin_to_celsius(temperature); + + *temp = temperature; + + return 0; +} + +static int vgxy61_get_temp_stream_disabled(struct vgxy61_dev *sensor, int *temp) +{ + int ret; + + /* Device needs to be in standby mode if streaming is off */ + ret = vgxy61_write_reg(sensor, DEVICE_STBY, STBY_REQ_TMP_READ); + if (ret) + return ret; + ret = vgxy61_poll_reg(sensor, DEVICE_STBY, STBY_NO_REQ); + if (ret) + return ret; + + return vgxy61_get_temp_stream_enabled(sensor, temp); +} + +static int vgxy61_get_temp(struct vgxy61_dev *sensor, int *temp) +{ + *temp = 0; + if (sensor->streaming) + return vgxy61_get_temp_stream_enabled(sensor, temp); + else + return vgxy61_get_temp_stream_disabled(sensor, temp); +} + +static int vgxy61_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct v4l2_subdev *sd = ctrl_to_sd(ctrl); + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + int ret; + + switch (ctrl->id) { + case V4L2_CID_EXPOSURE: + ret = vgxy61_update_exposure(sensor, ctrl->val, sensor->hdr, false); + ctrl->val = sensor->expo_long; + break; + case V4L2_CID_ANALOGUE_GAIN: + ret = vgxy61_update_analog_gain(sensor, ctrl->val); + break; + case V4L2_CID_DIGITAL_GAIN: + ret = vgxy61_update_digital_gain(sensor, ctrl->val); + break; + case V4L2_CID_VFLIP: + case V4L2_CID_HFLIP: + if (sensor->streaming) { + ret = -EBUSY; + break; + } + if (ctrl->id == V4L2_CID_VFLIP) + sensor->vflip = ctrl->val; + if (ctrl->id == V4L2_CID_HFLIP) + sensor->hflip = ctrl->val; + ret = vgxy61_write_reg(sensor, DEVICE_ORIENTATION, + sensor->hflip | (sensor->vflip << 1)); + break; + case V4L2_CID_TEST_PATTERN: + ret = vgxy61_update_patgen(sensor, ctrl->val); + break; + case V4L2_CID_HDR: + ret = vgxy61_update_hdr(sensor, ctrl->val); + break; + case V4L2_CID_GPIOS_STROBE_LONG_START_DELAY: + ret = vgxy61_write_reg(sensor, DEVICE_STROBE_LONG_START_DELAY, ctrl->val); + break; + case V4L2_CID_GPIOS_STROBE_LONG_END_DELAY: + ret = vgxy61_write_reg(sensor, DEVICE_STROBE_LONG_END_DELAY, ctrl->val); + break; + case V4L2_CID_GPIOS_STROBE_SHORT_START_DELAY: + ret = vgxy61_write_reg(sensor, DEVICE_STROBE_SHORT_START_DELAY, ctrl->val); + break; + case V4L2_CID_GPIOS_STROBE_SHORT_END_DELAY: + ret = vgxy61_write_reg(sensor, DEVICE_STROBE_SHORT_END_DELAY, ctrl->val); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int vgxy61_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + struct v4l2_subdev *sd = ctrl_to_sd(ctrl); + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + int temperature; + int ret; + + switch (ctrl->id) { + case V4L2_CID_TEMPERATURE: + ret = vgxy61_get_temp(sensor, &temperature); + if (ret) + break; + ret = __v4l2_ctrl_s_ctrl(ctrl, temperature); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static const struct v4l2_ctrl_ops vgxy61_ctrl_ops = { + .g_volatile_ctrl = vgxy61_g_volatile_ctrl, + .s_ctrl = vgxy61_s_ctrl, +}; + +static const struct v4l2_ctrl_config vgxy61_hdr_ctrl = { + .ops = &vgxy61_ctrl_ops, + .id = V4L2_CID_HDR, + .name = "HDR mode", + .type = V4L2_CTRL_TYPE_MENU, + .min = 0, + .max = ARRAY_SIZE(vgxy61_hdr_modes) - 1, + .def = NO_HDR, + .qmenu = vgxy61_hdr_modes, +}; + +static const struct v4l2_ctrl_config vgxy61_strobe_long_start_delay = { + .ops = &vgxy61_ctrl_ops, + .id = V4L2_CID_GPIOS_STROBE_LONG_START_DELAY, + .name = "Long strobe mode start delay in lines", + .type = V4L2_CTRL_TYPE_INTEGER, + .min = -128, + .max = 127, + .step = 1, + .def = 0, + .flags = 0, +}; + +static const struct v4l2_ctrl_config vgxy61_strobe_long_end_delay = { + .ops = &vgxy61_ctrl_ops, + .id = V4L2_CID_GPIOS_STROBE_LONG_END_DELAY, + .name = "Long strobe mode end delay in lines", + .type = V4L2_CTRL_TYPE_INTEGER, + .min = -128, + .max = 127, + .step = 1, + .def = 0, + .flags = 0, +}; + +static const struct v4l2_ctrl_config vgxy61_strobe_short_start_delay = { + .ops = &vgxy61_ctrl_ops, + .id = V4L2_CID_GPIOS_STROBE_SHORT_START_DELAY, + .name = "Short strobe mode start delay in lines", + .type = V4L2_CTRL_TYPE_INTEGER, + .min = -128, + .max = 127, + .step = 1, + .def = 0, + .flags = 0, +}; + +static const struct v4l2_ctrl_config vgxy61_strobe_short_end_delay = { + .ops = &vgxy61_ctrl_ops, + .id = V4L2_CID_GPIOS_STROBE_SHORT_END_DELAY, + .name = "Short strobe mode end delay in lines", + .type = V4L2_CTRL_TYPE_INTEGER, + .min = -128, + .max = 127, + .step = 1, + .def = 0, + .flags = 0, +}; + +static const struct v4l2_ctrl_config vgxy61_temp_ctrl = { + .ops = &vgxy61_ctrl_ops, + .id = V4L2_CID_TEMPERATURE, + .name = "Temperature in °C", + .type = V4L2_CTRL_TYPE_INTEGER, + .min = -128, + .max = 128, + .step = 1, +}; + +static int vgxy61_init_controls(struct vgxy61_dev *sensor) +{ + const struct v4l2_ctrl_ops *ops = &vgxy61_ctrl_ops; + struct vgxy61_ctrls *ctrls = &sensor->ctrls; + struct v4l2_ctrl_handler *hdl = &sensor->ctrls.handler; + int ret; + + v4l2_ctrl_handler_init(hdl, 16); + /* We can use our own mutex for the ctrl lock */ + hdl->lock = &sensor->lock; + ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE, 10, 0xffff, 1, + sensor->expo_long); + /* This is 8.8 fixed point value */ + ctrls->analog_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN, 0, 0x3fff, 1, + 0x0); + /* This is 8.8 fixed point value */ + ctrls->digital_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_DIGITAL_GAIN, 0, 0xfff, 1, + 0x100); + ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, sensor->vflip); + ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, sensor->hflip); + ctrls->patgen = v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(vgxy61_test_pattern_menu) - 1, + 0, 0, vgxy61_test_pattern_menu); + ctrls->hdr = v4l2_ctrl_new_custom(hdl, &vgxy61_hdr_ctrl, NULL); + ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, + get_pixel_rate(sensor)); + ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY; + ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_LINK_FREQ, + ARRAY_SIZE(link_freq) - 1, 0, link_freq); + ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; + /* Gpios ctrls */ + ctrls->gpios.long_start = v4l2_ctrl_new_custom(hdl, &vgxy61_strobe_long_start_delay, NULL); + ctrls->gpios.long_end = v4l2_ctrl_new_custom(hdl, &vgxy61_strobe_long_end_delay, NULL); + ctrls->gpios.short_start = v4l2_ctrl_new_custom(hdl, &vgxy61_strobe_short_start_delay, + NULL); + ctrls->gpios.short_end = v4l2_ctrl_new_custom(hdl, &vgxy61_strobe_short_end_delay, NULL); + /* Temperature ctrl */ + ctrls->temp = v4l2_ctrl_new_custom(hdl, &vgxy61_temp_ctrl, NULL); + ctrls->temp->flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY; + + if (hdl->error) { + ret = hdl->error; + goto free_ctrls; + } + + sensor->sd.ctrl_handler = hdl; + return 0; + +free_ctrls: + v4l2_ctrl_handler_free(hdl); + return ret; +} + +static const struct v4l2_subdev_core_ops vgxy61_core_ops = { +}; + +static const struct v4l2_subdev_video_ops vgxy61_video_ops = { + .s_stream = vgxy61_s_stream, + .g_frame_interval = vgxy61_g_frame_interval, + .s_frame_interval = vgxy61_s_frame_interval, +}; + +static const struct v4l2_subdev_pad_ops vgxy61_pad_ops = { + .enum_mbus_code = vgxy61_enum_mbus_code, + .get_fmt = vgxy61_get_fmt, + .set_fmt = vgxy61_set_fmt, + .enum_frame_size = vgxy61_enum_frame_size, + .enum_frame_interval = vgxy61_enum_frame_interval, +}; + +static const struct v4l2_subdev_ops vgxy61_subdev_ops = { + .core = &vgxy61_core_ops, + .video = &vgxy61_video_ops, + .pad = &vgxy61_pad_ops, +}; + +static const struct media_entity_operations vgxy61_subdev_entity_ops = { + .link_validate = v4l2_subdev_link_validate, +}; + +/* Set phy polarities */ +static int vgxy61_tx_from_ep(struct vgxy61_dev *sensor, struct fwnode_handle *endpoint) +{ + struct v4l2_fwnode_endpoint ep = { .bus_type = V4L2_MBUS_CSI2_DPHY }; + struct i2c_client *client = sensor->i2c_client; + u32 log2phy[NB_POLARITIES] = {~0, ~0, ~0, ~0, ~0}; + u32 phy2log[NB_POLARITIES] = {~0, ~0, ~0, ~0, ~0}; + int polarities[NB_POLARITIES] = {0, 0, 0, 0, 0}; + int l_nb; + int p, l; + int ret; + int i; + + ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep); + if (ret) + goto error_alloc; + + l_nb = ep.bus.mipi_csi2.num_data_lanes; + if (l_nb != 1 && l_nb != 2 && l_nb != 4) { + dev_err(&client->dev, "invalid data lane number %d\n", l_nb); + goto error_ep; + } + + /* Build log2phy, phy2log and polarities from ep info */ + log2phy[0] = ep.bus.mipi_csi2.clock_lane; + phy2log[log2phy[0]] = 0; + for (l = 1; l < l_nb + 1; l++) { + log2phy[l] = ep.bus.mipi_csi2.data_lanes[l - 1]; + phy2log[log2phy[l]] = l; + } + /* + * Then fill remaining slots for every physical slot to have something valid for hardware + * stuff. + */ + for (p = 0; p < NB_POLARITIES; p++) { + if (phy2log[p] != ~0) + continue; + phy2log[p] = l; + log2phy[l] = p; + l++; + } + for (l = 0; l < l_nb + 1; l++) + polarities[l] = ep.bus.mipi_csi2.lane_polarities[l]; + + if (log2phy[0] != 0) { + dev_err(&client->dev, "clk lane must be map to physical lane 0\n"); + goto error_ep; + } + sensor->oif_ctrl = (polarities[4] << 15) + ((phy2log[4] - 1) << 13) + + (polarities[3] << 12) + ((phy2log[3] - 1) << 10) + + (polarities[2] << 9) + ((phy2log[2] - 1) << 7) + + (polarities[1] << 6) + ((phy2log[1] - 1) << 4) + + (polarities[0] << 3) + + l_nb; + sensor->nb_of_lane = l_nb; + + dev_dbg(&client->dev, "tx uses %d lanes", l_nb); + for (i = 0; i < 5; i++) { + dev_dbg(&client->dev, "log2phy[%d] = %d\n", i, log2phy[i]); + dev_dbg(&client->dev, "phy2log[%d] = %d\n", i, phy2log[i]); + dev_dbg(&client->dev, "polarity[%d] = %d\n", i, polarities[i]); + } + dev_dbg(&client->dev, "oif_ctrl = 0x%04x\n", sensor->oif_ctrl); + + v4l2_fwnode_endpoint_free(&ep); + + return 0; + +error_ep: + v4l2_fwnode_endpoint_free(&ep); +error_alloc: + + return -EINVAL; +} + +static int vgxy61_configure(struct vgxy61_dev *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + int sensor_freq; + unsigned int prediv; + unsigned int mult; + int ret; + + compute_pll_parameters_by_freq(sensor->clk_freq, &prediv, &mult); + sensor_freq = (mult * sensor->clk_freq) / prediv; + /* Frequency to data rate is 1:1 ratio for MIPI */ + sensor->data_rate_in_mbps = sensor_freq; + /* Video timing ISP path (pixel clock) requires 804/5 mhz = 160 mhz */ + sensor->pclk = sensor_freq / 5; + + /* Cache line_length value */ + ret = vgxy61_read_reg16(sensor, DEVICE_LINE_LENGTH, &sensor->line_length); + if (ret) + return ret; + /* Configure clocks */ + ret = vgxy61_write_reg32(sensor, DEVICE_EXT_CLOCK, sensor->clk_freq); + if (ret) + return ret; + ret = vgxy61_write_reg(sensor, DEVICE_CLK_PLL_PREDIV, prediv); + if (ret) + return ret; + ret = vgxy61_write_reg(sensor, DEVICE_CLK_SYS_PLL_MULT, mult); + if (ret) + return ret; + /* Configure interface */ + ret = vgxy61_write_reg16(sensor, DEVICE_OIF_CTRL, sensor->oif_ctrl); + if (ret) + return ret; + /* Disable pwm compression */ + ret = vgxy61_write_reg(sensor, DEVICE_FRAME_CONTENT_CTRL, 0); + if (ret) + return ret; + /* Disable asil lines */ + ret = vgxy61_write_reg(sensor, DEVICE_BYPASS_CTRL, 4); + if (ret) + return ret; + /* Set gpios polarity according to device tree value */ + ret = vgxy61_update_gpios_strobe_polarity(sensor, sensor->gpios_polarity); + if (ret) + return ret; + /* HDR mode */ + ret = vgxy61_update_hdr(sensor, sensor->hdr); + if (ret) + return ret; + /* Slave mode */ + ret = vgxy61_write_reg(sensor, DEVICE_VT_CTRL, sensor->slave_mode); + if (ret) + return ret; + /* Set pattern generator solid to middle value */ + ret = vgxy61_write_reg16(sensor, DEVICE_PATGEN_LONG_DATA_GR, 0x800); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_PATGEN_LONG_DATA_R, 0x800); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_PATGEN_LONG_DATA_B, 0x800); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_PATGEN_LONG_DATA_GB, 0x800); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_PATGEN_SHORT_DATA_GR, 0x800); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_PATGEN_SHORT_DATA_R, 0x800); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_PATGEN_SHORT_DATA_B, 0x800); + if (ret) + return ret; + ret = vgxy61_write_reg16(sensor, DEVICE_PATGEN_SHORT_DATA_GB, 0x800); + if (ret) + return ret; + + dev_dbg(&client->dev, "clock prediv = %d\n", prediv); + dev_dbg(&client->dev, "clock mult = %d\n", mult); + dev_dbg(&client->dev, "data rate = %d mbps\n", + sensor->data_rate_in_mbps); + + return 0; +} + +static int vgxy61_patch(struct vgxy61_dev *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + u16 patch; + int ret; + + ret = vgxy61_write_array(sensor, DEVICE_FWPATCH_START_ADDR, sizeof(patch_array), + patch_array); + if (ret) + return ret; + + ret = vgxy61_write_reg(sensor, DEVICE_STBY, 0x10); + if (ret) + return ret; + + ret = vgxy61_poll_reg(sensor, DEVICE_STBY, 0); + if (ret) + return ret; + + ret = vgxy61_read_reg16(sensor, DEVICE_FWPATCH_REVISION, &patch); + if (ret) + return ret; + + if (patch != (DEVICE_FWPATCH_REVISION_MAJOR << 12) + + (DEVICE_FWPATCH_REVISION_MINOR << 8) + + DEVICE_FWPATCH_REVISION_MICRO) { + dev_err(&client->dev, "bad patch version expected %d.%d.%d got %d.%d.%d\n", + DEVICE_FWPATCH_REVISION_MAJOR, + DEVICE_FWPATCH_REVISION_MINOR, + DEVICE_FWPATCH_REVISION_MICRO, + patch >> 12, (patch >> 8) & 0x0f, patch & 0xff); + return -ENODEV; + } + dev_dbg(&client->dev, "patch %d.%d.%d applied\n", + patch >> 12, (patch >> 8) & 0x0f, patch & 0xff); + + return 0; +} + +static int vgxy61_detect_cut_version(struct vgxy61_dev *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + u16 device_rev; + int ret; + + ret = vgxy61_read_reg16(sensor, DEVICE_REVISION, &device_rev); + if (ret) + return ret; + + switch (device_rev >> 8) { + case 0xA: + dev_info(&client->dev, "Cut1 detected\n"); + dev_err(&client->dev, "Cut1 not supported by this driver\n"); + return -ENODEV; + case 0xB: + dev_info(&client->dev, "Cut2 detected\n"); + return 0; + case 0xC: + dev_info(&client->dev, "Cut3 detected\n"); + return 0; + default: + dev_err(&client->dev, "Unable to detect cut version\n"); + return -ENODEV; + } +} + +static int vgxy61_detect(struct vgxy61_dev *sensor) +{ + struct i2c_client *client = sensor->i2c_client; + u16 id = 0; + int ret; + u8 st; + + ret = vgxy61_read_reg16(sensor, DEVICE_MODEL_ID_REG, &id); + if (ret) + return ret; + if (id != VG5661_MODEL_ID && id != VG5761_MODEL_ID) { + dev_warn(&client->dev, "Unsupported sensor id %x\n", id); + return -ENODEV; + } + dev_dbg(&client->dev, "detected sensor id = 0x%04x\n", id); + + if (id == VG5761_MODEL_ID) { + sensor->sensor_width = VGX761_WIDTH; + sensor->sensor_height = VGX761_HEIGHT; + sensor->sensor_modes = vgx761_mode_data; + sensor->sensor_modes_nb = ARRAY_SIZE(vgx761_mode_data); + sensor->current_mode = &vgx761_mode_data[VGX761_DEFAULT_MODE]; + sensor->rot_term = VGX761_SHORT_ROT_TERM; + sensor->sensor_rates = vgx761_sensor_frame_rates; + sensor->sensor_rates_nb = ARRAY_SIZE(vgx761_sensor_frame_rates); + } else if (id == VG5661_MODEL_ID) { + sensor->sensor_width = VGX661_WIDTH; + sensor->sensor_height = VGX661_HEIGHT; + sensor->sensor_modes = vgx661_mode_data; + sensor->sensor_modes_nb = ARRAY_SIZE(vgx661_mode_data); + sensor->current_mode = &vgx661_mode_data[VGX661_DEFAULT_MODE]; + sensor->rot_term = VGX661_SHORT_ROT_TERM; + sensor->sensor_rates = vgx661_sensor_frame_rates; + sensor->sensor_rates_nb = ARRAY_SIZE(vgx661_sensor_frame_rates); + } + + ret = vgxy61_wait_state(sensor, SW_STBY); + if (ret) + return ret; + + ret = vgxy61_read_reg(sensor, DEVICE_NVM, &st); + if (ret) + return ret; + if (st != NVM_OK) + dev_warn(&client->dev, "Bad nvm state got %d\n", st); + + /* Detect cut version */ + ret = vgxy61_detect_cut_version(sensor); + if (ret) + return ret; + + return 0; +} + +static int vgxy61_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct fwnode_handle *endpoint; + struct vgxy61_dev *sensor; + int ret; + + sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); + if (!sensor) + return -ENOMEM; + + sensor->i2c_client = client; + sensor->streaming = false; + sensor->fmt.code = MEDIA_BUS_FMT_SGBRG8_1X8; + sensor->fmt.field = V4L2_FIELD_NONE; + sensor->fmt.colorspace = V4L2_COLORSPACE_SRGB; + sensor->frame_interval.numerator = 1; + sensor->frame_interval.denominator = 60; + sensor->hdr = NO_HDR; + sensor->expo_long = 200; + sensor->expo_short = 0; + sensor->hflip = false; + sensor->vflip = false; + + endpoint = fwnode_graph_get_next_endpoint(of_fwnode_handle(dev->of_node), NULL); + if (!endpoint) { + dev_err(dev, "endpoint node not found\n"); + return -EINVAL; + } + + ret = vgxy61_tx_from_ep(sensor, endpoint); + fwnode_handle_put(endpoint); + if (ret) { + dev_err(dev, "Failed to parse endpoint %d\n", ret); + return ret; + } + + sensor->xclk = devm_clk_get(dev, "xclk"); + if (IS_ERR(sensor->xclk)) { + dev_err(dev, "failed to get xclk\n"); + return PTR_ERR(sensor->xclk); + } + sensor->clk_freq = clk_get_rate(sensor->xclk); + if (sensor->clk_freq < 6000000 || sensor->clk_freq > 27000000) { + dev_err(dev, "Only 6Mhz-27Mhz clock range supported. provide %d Hz\n", + sensor->clk_freq); + return -EINVAL; + } + sensor->gpios_polarity = of_property_read_bool(dev->of_node, "invert-gpios-polarity"); + sensor->slave_mode = of_property_read_bool(dev->of_node, "slave-mode"); + + v4l2_i2c_subdev_init(&sensor->sd, client, &vgxy61_subdev_ops); + sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + sensor->pad.flags = MEDIA_PAD_FL_SOURCE; + sensor->sd.entity.ops = &vgxy61_subdev_entity_ops; + 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, "pads init failed %d\n", ret); + return ret; + } + + /* Request optional reset pin */ + sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + + ret = vgxy61_get_regulators(sensor); + if (ret) { + dev_err(&client->dev, "failed to get regulators %d\n", ret); + goto entity_cleanup; + } + + ret = regulator_bulk_enable(VGXY61_NUM_SUPPLIES, sensor->supplies); + if (ret) { + dev_err(&client->dev, "failed to enable regulators %d\n", ret); + goto entity_cleanup; + } + + ret = clk_prepare_enable(sensor->xclk); + if (ret) { + dev_err(&client->dev, "failed to enable clock %d\n", ret); + goto disable_bulk; + } + + mutex_init(&sensor->lock); + + /* Apply reset sequence */ + if (sensor->reset_gpio) { + ret = vgxy61_apply_reset(sensor); + if (ret) { + dev_err(&client->dev, "sensor reset failed %d\n", ret); + goto disable_clock; + } + } + + ret = vgxy61_detect(sensor); + if (ret) { + dev_err(&client->dev, "sensor detect failed %d\n", ret); + goto disable_clock; + } + sensor->fmt.width = sensor->current_mode->width; + sensor->fmt.height = sensor->current_mode->height; + + ret = vgxy61_patch(sensor); + if (ret) { + dev_err(&client->dev, "sensor patch failed %d\n", ret); + goto disable_clock; + } + + ret = vgxy61_configure(sensor); + if (ret) { + dev_err(&client->dev, "sensor configuration failed %d\n", ret); + goto disable_clock; + } + + ret = vgxy61_init_controls(sensor); + if (ret) { + dev_err(&client->dev, "controls initialization failed %d\n", ret); + goto disable_clock; + } + + ret = v4l2_async_register_subdev(&sensor->sd); + if (ret) { + dev_err(&client->dev, "async subdev register failed %d\n", ret); + goto disable_clock; + } + + dev_info(&client->dev, "vgxy61 probe successfully\n"); + + return 0; + +disable_clock: + clk_disable_unprepare(sensor->xclk); +disable_bulk: + regulator_bulk_disable(VGXY61_NUM_SUPPLIES, sensor->supplies); +entity_cleanup: + mutex_destroy(&sensor->lock); + media_entity_cleanup(&sensor->sd.entity); + return ret; +} + +static int vgxy61_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct vgxy61_dev *sensor = to_vgxy61_dev(sd); + + v4l2_async_unregister_subdev(&sensor->sd); + clk_disable_unprepare(sensor->xclk); + mutex_destroy(&sensor->lock); + media_entity_cleanup(&sensor->sd.entity); + regulator_bulk_disable(VGXY61_NUM_SUPPLIES, sensor->supplies); + + return 0; +} + +static const struct of_device_id vgxy61_dt_ids[] = { + { .compatible = "st,st-vgxy61" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, vgxy61_dt_ids); + +static struct i2c_driver vgxy61_i2c_driver = { + .driver = { + .name = "st-vgxy61", + .of_match_table = vgxy61_dt_ids, + }, + .probe_new = vgxy61_probe, + .remove = vgxy61_remove, +}; + +module_i2c_driver(vgxy61_i2c_driver); + +MODULE_AUTHOR("Benjamin Mugnier "); +MODULE_AUTHOR("Mickael Guene "); +MODULE_AUTHOR("Sylvain Petinot "); +MODULE_DESCRIPTION("VGXY61 camera subdev driver"); +MODULE_LICENSE("GPL v2");