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[23.128.96.37]) by mx.google.com with ESMTPS id a2-20020a056a000c8200b006ce6b4258ffsi2660024pfv.302.2023.12.08.21.56.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Dec 2023 21:56:41 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=HkbbBQzV; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 94C40805F96E; Fri, 8 Dec 2023 21:56:39 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234319AbjLIF4T (ORCPT + 99 others); Sat, 9 Dec 2023 00:56:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58516 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229461AbjLIF4M (ORCPT ); Sat, 9 Dec 2023 00:56:12 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A14D10FA for ; Fri, 8 Dec 2023 21:56:13 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1ACE1C433CB; Sat, 9 Dec 2023 05:56:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1702101372; bh=etAr7tNcs538xZm/3Ph9n18hRqKUaBw9e1RCzvbW/44=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HkbbBQzVcuLdwO6HUza9YDfg8XEPP2HcHSw1776kF6Ih5oFNvL8bmnCp7GYEFPYMZ rZBzMxGKo+3sCWRPjU6NBdvzcfjmLcdaTjkhVMF10IZcYGSeKkl9v8eOpZH57ddqMI Lw5qCfuG/0yxLGhbhpkC2iGyDHBvfS8a5ygiWp6ozyWkRSnLEQ9YWLckzPXfqFV+B8 dZ5+k+orS5FmXyJnULtjlEfQlZ1kGYbBYH5YY25w0MYaOG8wZ2DsOAxwBwA7hvYTLW x0ZZYO6udqVxH2mNepHEv22JLQvfZmtd96B+CdPf243ZTnEQp+lkHr/Y3kTqTY51qe MUX1597ieHvHw== Received: by mercury (Postfix, from userid 1000) id 18A5F106CC76; Sat, 9 Dec 2023 00:19:50 +0100 (CET) From: Sebastian Reichel To: Sebastian Reichel , Sakari Ailus , Jacopo Mondi Cc: Alain Volmat , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 3/3] media: i2c: gc0308: new driver Date: Sat, 9 Dec 2023 00:18:19 +0100 Message-ID: <20231208231933.284277-4-sre@kernel.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231208231933.284277-1-sre@kernel.org> References: <20231208231933.284277-1-sre@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Fri, 08 Dec 2023 21:56:39 -0800 (PST) Introduce new driver for GalaxyCore GC0308, which is a cheap 640x480 with an on-chip ISP sensor sold since 2010. Data is provided via parallel bus. Reviewed-by: Jacopo Mondi Signed-off-by: Sebastian Reichel --- MAINTAINERS | 7 + drivers/media/i2c/Kconfig | 10 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/gc0308.c | 1451 ++++++++++++++++++++++++++++++++++++ 4 files changed, 1469 insertions(+) create mode 100644 drivers/media/i2c/gc0308.c diff --git a/MAINTAINERS b/MAINTAINERS index 142225181316..d9b108ee068f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8778,6 +8778,13 @@ F: drivers/mfd/gateworks-gsc.c F: include/linux/mfd/gsc.h F: include/linux/platform_data/gsc_hwmon.h +GC0308 GALAXYCORE CAMERA SENSOR DRIVER +M: Sebastian Reichel +L: linux-media@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/media/i2c/galaxycore,gc0308.yaml +F: drivers/media/i2c/gc0308.c + GCC PLUGINS M: Kees Cook L: linux-hardening@vger.kernel.org diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index aae05142e191..4af216ec7124 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -50,6 +50,16 @@ config VIDEO_AR0521 To compile this driver as a module, choose M here: the module will be called ar0521. +config VIDEO_GC0308 + tristate "GalaxyCore GC0308 sensor support" + select V4L2_CCI_I2C + help + This is a Video4Linux2 sensor driver for the GalaxyCore + GC0308 camera. + + To compile this driver as a module, choose M here: the + module will be called gc0308. + config VIDEO_GC2145 select V4L2_CCI_I2C tristate "GalaxyCore GC2145 sensor support" diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index a7ee96174397..ad4c4ee3f13f 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -36,6 +36,7 @@ obj-$(CONFIG_VIDEO_DW9719) += dw9719.o obj-$(CONFIG_VIDEO_DW9768) += dw9768.o obj-$(CONFIG_VIDEO_DW9807_VCM) += dw9807-vcm.o obj-$(CONFIG_VIDEO_ET8EK8) += et8ek8/ +obj-$(CONFIG_VIDEO_GC0308) += gc0308.o obj-$(CONFIG_VIDEO_GC2145) += gc2145.o obj-$(CONFIG_VIDEO_HI556) += hi556.o obj-$(CONFIG_VIDEO_HI846) += hi846.o diff --git a/drivers/media/i2c/gc0308.c b/drivers/media/i2c/gc0308.c new file mode 100644 index 000000000000..fa754a8a39a6 --- /dev/null +++ b/drivers/media/i2c/gc0308.c @@ -0,0 +1,1451 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for the GalaxyCore GC0308 camera sensor. + * + * Copyright (c) 2023 Sebastian Reichel + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +/* Analog & CISCTL*/ +#define GC0308_CHIP_ID CCI_REG8(0x000) +#define GC0308_HBLANK CCI_REG8(0x001) +#define GC0308_VBLANK CCI_REG8(0x002) +#define GC0308_EXP CCI_REG16(0x003) +#define GC0308_ROW_START CCI_REG16(0x005) +#define GC0308_COL_START CCI_REG16(0x007) +#define GC0308_WIN_HEIGHT CCI_REG16(0x009) +#define GC0308_WIN_WIDTH CCI_REG16(0x00b) +#define GC0308_VS_START_TIME CCI_REG8(0x00d) /* in rows */ +#define GC0308_VS_END_TIME CCI_REG8(0x00e) /* in rows */ +#define GC0308_VB_HB CCI_REG8(0x00f) +#define GC0308_RSH_WIDTH CCI_REG8(0x010) +#define GC0308_TSP_WIDTH CCI_REG8(0x011) +#define GC0308_SAMPLE_HOLD_DELAY CCI_REG8(0x012) +#define GC0308_ROW_TAIL_WIDTH CCI_REG8(0x013) +#define GC0308_CISCTL_MODE1 CCI_REG8(0x014) +#define GC0308_CISCTL_MODE2 CCI_REG8(0x015) +#define GC0308_CISCTL_MODE3 CCI_REG8(0x016) +#define GC0308_CISCTL_MODE4 CCI_REG8(0x017) +#define GC0308_ANALOG_MODE1 CCI_REG8(0x01a) +#define GC0308_ANALOG_MODE2 CCI_REG8(0x01b) +#define GC0308_HRST_RSG_V18 CCI_REG8(0x01c) +#define GC0308_VREF_V25 CCI_REG8(0x01d) +#define GC0308_ADC_R CCI_REG8(0x01e) +#define GC0308_PAD_DRV CCI_REG8(0x01f) +#define GC0308_SOFT_RESET CCI_REG8(0x0fe) + +/* ISP */ +#define GC0308_BLOCK_EN1 CCI_REG8(0x020) +#define GC0308_BLOCK_EN2 CCI_REG8(0x021) +#define GC0308_AAAA_EN CCI_REG8(0x022) +#define GC0308_SPECIAL_EFFECT CCI_REG8(0x023) +#define GC0308_OUT_FORMAT CCI_REG8(0x024) +#define GC0308_OUT_EN CCI_REG8(0x025) +#define GC0308_SYNC_MODE CCI_REG8(0x026) +#define GC0308_CLK_DIV_MODE CCI_REG8(0x028) +#define GC0308_BYPASS_MODE CCI_REG8(0x029) +#define GC0308_CLK_GATING CCI_REG8(0x02a) +#define GC0308_DITHER_MODE CCI_REG8(0x02b) +#define GC0308_DITHER_BIT CCI_REG8(0x02c) +#define GC0308_DEBUG_MODE1 CCI_REG8(0x02d) +#define GC0308_DEBUG_MODE2 CCI_REG8(0x02e) +#define GC0308_DEBUG_MODE3 CCI_REG8(0x02f) +#define GC0308_CROP_WIN_MODE CCI_REG8(0x046) +#define GC0308_CROP_WIN_Y1 CCI_REG8(0x047) +#define GC0308_CROP_WIN_X1 CCI_REG8(0x048) +#define GC0308_CROP_WIN_HEIGHT CCI_REG16(0x049) +#define GC0308_CROP_WIN_WIDTH CCI_REG16(0x04b) + +/* BLK */ +#define GC0308_BLK_MODE CCI_REG8(0x030) +#define GC0308_BLK_LIMIT_VAL CCI_REG8(0x031) +#define GC0308_GLOBAL_OFF CCI_REG8(0x032) +#define GC0308_CURRENT_R_OFF CCI_REG8(0x033) +#define GC0308_CURRENT_G_OFF CCI_REG8(0x034) +#define GC0308_CURRENT_B_OFF CCI_REG8(0x035) +#define GC0308_CURRENT_R_DARK_CURRENT CCI_REG8(0x036) +#define GC0308_CURRENT_G_DARK_CURRENT CCI_REG8(0x037) +#define GC0308_CURRENT_B_DARK_CURRENT CCI_REG8(0x038) +#define GC0308_EXP_RATE_DARKC CCI_REG8(0x039) +#define GC0308_OFF_SUBMODE CCI_REG8(0x03a) +#define GC0308_DARKC_SUBMODE CCI_REG8(0x03b) +#define GC0308_MANUAL_G1_OFF CCI_REG8(0x03c) +#define GC0308_MANUAL_R1_OFF CCI_REG8(0x03d) +#define GC0308_MANUAL_B2_OFF CCI_REG8(0x03e) +#define GC0308_MANUAL_G2_OFF CCI_REG8(0x03f) + +/* PREGAIN */ +#define GC0308_GLOBAL_GAIN CCI_REG8(0x050) +#define GC0308_AUTO_PREGAIN CCI_REG8(0x051) +#define GC0308_AUTO_POSTGAIN CCI_REG8(0x052) +#define GC0308_CHANNEL_GAIN_G1 CCI_REG8(0x053) +#define GC0308_CHANNEL_GAIN_R CCI_REG8(0x054) +#define GC0308_CHANNEL_GAIN_B CCI_REG8(0x055) +#define GC0308_CHANNEL_GAIN_G2 CCI_REG8(0x056) +#define GC0308_R_RATIO CCI_REG8(0x057) +#define GC0308_G_RATIO CCI_REG8(0x058) +#define GC0308_B_RATIO CCI_REG8(0x059) +#define GC0308_AWB_R_GAIN CCI_REG8(0x05a) +#define GC0308_AWB_G_GAIN CCI_REG8(0x05b) +#define GC0308_AWB_B_GAIN CCI_REG8(0x05c) +#define GC0308_LSC_DEC_LVL1 CCI_REG8(0x05d) +#define GC0308_LSC_DEC_LVL2 CCI_REG8(0x05e) +#define GC0308_LSC_DEC_LVL3 CCI_REG8(0x05f) + +/* DNDD */ +#define GC0308_DN_MODE_EN CCI_REG8(0x060) +#define GC0308_DN_MODE_RATIO CCI_REG8(0x061) +#define GC0308_DN_BILAT_B_BASE CCI_REG8(0x062) +#define GC0308_DN_B_INCR CCI_REG8(0x063) +#define GC0308_DN_BILAT_N_BASE CCI_REG8(0x064) +#define GC0308_DN_N_INCR CCI_REG8(0x065) +#define GC0308_DD_DARK_BRIGHT_TH CCI_REG8(0x066) +#define GC0308_DD_FLAT_TH CCI_REG8(0x067) +#define GC0308_DD_LIMIT CCI_REG8(0x068) + +/* ASDE - Auto Saturation De-noise and Edge-Enhancement */ +#define GC0308_ASDE_GAIN_TRESH CCI_REG8(0x069) +#define GC0308_ASDE_GAIN_MODE CCI_REG8(0x06a) +#define GC0308_ASDE_DN_SLOPE CCI_REG8(0x06b) +#define GC0308_ASDE_DD_BRIGHT CCI_REG8(0x06c) +#define GC0308_ASDE_DD_LIMIT CCI_REG8(0x06d) +#define GC0308_ASDE_AUTO_EE1 CCI_REG8(0x06e) +#define GC0308_ASDE_AUTO_EE2 CCI_REG8(0x06f) +#define GC0308_ASDE_AUTO_SAT_DEC_SLOPE CCI_REG8(0x070) +#define GC0308_ASDE_AUTO_SAT_LOW_LIMIT CCI_REG8(0x071) + +/* INTPEE - Interpolation and Edge-Enhancement */ +#define GC0308_EEINTP_MODE_1 CCI_REG8(0x072) +#define GC0308_EEINTP_MODE_2 CCI_REG8(0x073) +#define GC0308_DIRECTION_TH1 CCI_REG8(0x074) +#define GC0308_DIRECTION_TH2 CCI_REG8(0x075) +#define GC0308_DIFF_HV_TI_TH CCI_REG8(0x076) +#define GC0308_EDGE12_EFFECT CCI_REG8(0x077) +#define GC0308_EDGE_POS_RATIO CCI_REG8(0x078) +#define GC0308_EDGE1_MINMAX CCI_REG8(0x079) +#define GC0308_EDGE2_MINMAX CCI_REG8(0x07a) +#define GC0308_EDGE12_TH CCI_REG8(0x07b) +#define GC0308_EDGE_MAX CCI_REG8(0x07c) + +/* ABB - Auto Black Balance */ +#define GC0308_ABB_MODE CCI_REG8(0x080) +#define GC0308_ABB_TARGET_AVGH CCI_REG8(0x081) +#define GC0308_ABB_TARGET_AVGL CCI_REG8(0x082) +#define GC0308_ABB_LIMIT_VAL CCI_REG8(0x083) +#define GC0308_ABB_SPEED CCI_REG8(0x084) +#define GC0308_CURR_R_BLACK_LVL CCI_REG8(0x085) +#define GC0308_CURR_G_BLACK_LVL CCI_REG8(0x086) +#define GC0308_CURR_B_BLACK_LVL CCI_REG8(0x087) +#define GC0308_CURR_R_BLACK_FACTOR CCI_REG8(0x088) +#define GC0308_CURR_G_BLACK_FACTOR CCI_REG8(0x089) +#define GC0308_CURR_B_BLACK_FACTOR CCI_REG8(0x08a) + +/* LSC - Lens Shading Correction */ +#define GC0308_LSC_RED_B2 CCI_REG8(0x08b) +#define GC0308_LSC_GREEN_B2 CCI_REG8(0x08c) +#define GC0308_LSC_BLUE_B2 CCI_REG8(0x08d) +#define GC0308_LSC_RED_B4 CCI_REG8(0x08e) +#define GC0308_LSC_GREEN_B4 CCI_REG8(0x08f) +#define GC0308_LSC_BLUE_B4 CCI_REG8(0x090) +#define GC0308_LSC_ROW_CENTER CCI_REG8(0x091) +#define GC0308_LSC_COL_CENTER CCI_REG8(0x092) + +/* CC - Channel Coefficient */ +#define GC0308_CC_MATRIX_C11 CCI_REG8(0x093) +#define GC0308_CC_MATRIX_C12 CCI_REG8(0x094) +#define GC0308_CC_MATRIX_C13 CCI_REG8(0x095) +#define GC0308_CC_MATRIX_C21 CCI_REG8(0x096) +#define GC0308_CC_MATRIX_C22 CCI_REG8(0x097) +#define GC0308_CC_MATRIX_C23 CCI_REG8(0x098) +#define GC0308_CC_MATRIX_C41 CCI_REG8(0x09c) +#define GC0308_CC_MATRIX_C42 CCI_REG8(0x09d) +#define GC0308_CC_MATRIX_C43 CCI_REG8(0x09e) + +/* GAMMA */ +#define GC0308_GAMMA_OUT0 CCI_REG8(0x09f) +#define GC0308_GAMMA_OUT1 CCI_REG8(0x0a0) +#define GC0308_GAMMA_OUT2 CCI_REG8(0x0a1) +#define GC0308_GAMMA_OUT3 CCI_REG8(0x0a2) +#define GC0308_GAMMA_OUT4 CCI_REG8(0x0a3) +#define GC0308_GAMMA_OUT5 CCI_REG8(0x0a4) +#define GC0308_GAMMA_OUT6 CCI_REG8(0x0a5) +#define GC0308_GAMMA_OUT7 CCI_REG8(0x0a6) +#define GC0308_GAMMA_OUT8 CCI_REG8(0x0a7) +#define GC0308_GAMMA_OUT9 CCI_REG8(0x0a8) +#define GC0308_GAMMA_OUT10 CCI_REG8(0x0a9) +#define GC0308_GAMMA_OUT11 CCI_REG8(0x0aa) +#define GC0308_GAMMA_OUT12 CCI_REG8(0x0ab) +#define GC0308_GAMMA_OUT13 CCI_REG8(0x0ac) +#define GC0308_GAMMA_OUT14 CCI_REG8(0x0ad) +#define GC0308_GAMMA_OUT15 CCI_REG8(0x0ae) +#define GC0308_GAMMA_OUT16 CCI_REG8(0x0af) + +/* YCP */ +#define GC0308_GLOBAL_SATURATION CCI_REG8(0x0b0) +#define GC0308_SATURATION_CB CCI_REG8(0x0b1) +#define GC0308_SATURATION_CR CCI_REG8(0x0b2) +#define GC0308_LUMA_CONTRAST CCI_REG8(0x0b3) +#define GC0308_CONTRAST_CENTER CCI_REG8(0x0b4) +#define GC0308_LUMA_OFFSET CCI_REG8(0x0b5) +#define GC0308_SKIN_CB_CENTER CCI_REG8(0x0b6) +#define GC0308_SKIN_CR_CENTER CCI_REG8(0x0b7) +#define GC0308_SKIN_RADIUS_SQUARE CCI_REG8(0x0b8) +#define GC0308_SKIN_BRIGHTNESS CCI_REG8(0x0b9) +#define GC0308_FIXED_CB CCI_REG8(0x0ba) +#define GC0308_FIXED_CR CCI_REG8(0x0bb) +#define GC0308_EDGE_DEC_SA CCI_REG8(0x0bd) +#define GC0308_AUTO_GRAY_MODE CCI_REG8(0x0be) +#define GC0308_SATURATION_SUB_STRENGTH CCI_REG8(0x0bf) +#define GC0308_Y_GAMMA_OUT0 CCI_REG8(0x0c0) +#define GC0308_Y_GAMMA_OUT1 CCI_REG8(0x0c1) +#define GC0308_Y_GAMMA_OUT2 CCI_REG8(0x0c2) +#define GC0308_Y_GAMMA_OUT3 CCI_REG8(0x0c3) +#define GC0308_Y_GAMMA_OUT4 CCI_REG8(0x0c4) +#define GC0308_Y_GAMMA_OUT5 CCI_REG8(0x0c5) +#define GC0308_Y_GAMMA_OUT6 CCI_REG8(0x0c6) +#define GC0308_Y_GAMMA_OUT7 CCI_REG8(0x0c7) +#define GC0308_Y_GAMMA_OUT8 CCI_REG8(0x0c8) +#define GC0308_Y_GAMMA_OUT9 CCI_REG8(0x0c9) +#define GC0308_Y_GAMMA_OUT10 CCI_REG8(0x0ca) +#define GC0308_Y_GAMMA_OUT11 CCI_REG8(0x0cb) +#define GC0308_Y_GAMMA_OUT12 CCI_REG8(0x0cc) + +/* AEC - Automatic Exposure Control */ +#define GC0308_AEC_MODE1 CCI_REG8(0x0d0) +#define GC0308_AEC_MODE2 CCI_REG8(0x0d1) +#define GC0308_AEC_MODE3 CCI_REG8(0x0d2) +#define GC0308_AEC_TARGET_Y CCI_REG8(0x0d3) +#define GC0308_Y_AVG CCI_REG8(0x0d4) +#define GC0308_AEC_HIGH_LOW_RANGE CCI_REG8(0x0d5) +#define GC0308_AEC_IGNORE CCI_REG8(0x0d6) +#define GC0308_AEC_LIMIT_HIGH_RANGE CCI_REG8(0x0d7) +#define GC0308_AEC_R_OFFSET CCI_REG8(0x0d9) +#define GC0308_AEC_GB_OFFSET CCI_REG8(0x0da) +#define GC0308_AEC_SLOW_MARGIN CCI_REG8(0x0db) +#define GC0308_AEC_FAST_MARGIN CCI_REG8(0x0dc) +#define GC0308_AEC_EXP_CHANGE_GAIN CCI_REG8(0x0dd) +#define GC0308_AEC_STEP2_SUNLIGHT CCI_REG8(0x0de) +#define GC0308_AEC_I_FRAMES CCI_REG8(0x0df) +#define GC0308_AEC_I_STOP_L_MARGIN CCI_REG8(0x0e0) +#define GC0308_AEC_I_STOP_MARGIN CCI_REG8(0x0e1) +#define GC0308_ANTI_FLICKER_STEP CCI_REG16(0x0e2) +#define GC0308_EXP_LVL_1 CCI_REG16(0x0e4) +#define GC0308_EXP_LVL_2 CCI_REG16(0x0e6) +#define GC0308_EXP_LVL_3 CCI_REG16(0x0e8) +#define GC0308_EXP_LVL_4 CCI_REG16(0x0ea) +#define GC0308_MAX_EXP_LVL CCI_REG8(0x0ec) +#define GC0308_EXP_MIN_L CCI_REG8(0x0ed) +#define GC0308_MAX_POST_DF_GAIN CCI_REG8(0x0ee) +#define GC0308_MAX_PRE_DG_GAIN CCI_REG8(0x0ef) + +/* ABS */ +#define GC0308_ABS_RANGE_COMP CCI_REG8(0x0f0) +#define GC0308_ABS_STOP_MARGIN CCI_REG8(0x0f1) +#define GC0308_Y_S_COMP CCI_REG8(0x0f2) +#define GC0308_Y_STRETCH_LIMIT CCI_REG8(0x0f3) +#define GC0308_Y_TILT CCI_REG8(0x0f4) +#define GC0308_Y_STRETCH CCI_REG8(0x0f5) + +/* Measure Window */ +#define GC0308_BIG_WIN_X0 CCI_REG8(0x0f7) +#define GC0308_BIG_WIN_Y0 CCI_REG8(0x0f8) +#define GC0308_BIG_WIN_X1 CCI_REG8(0x0f9) +#define GC0308_BIG_WIN_Y1 CCI_REG8(0x0fa) +#define GC0308_DIFF_Y_BIG_THD CCI_REG8(0x0fb) + +/* OUT Module (P1) */ +#define GC0308_CLOSE_FRAME_EN CCI_REG8(0x150) +#define GC0308_CLOSE_FRAME_NUM1 CCI_REG8(0x151) +#define GC0308_CLOSE_FRAME_NUM2 CCI_REG8(0x152) +#define GC0308_BAYER_MODE CCI_REG8(0x153) +#define GC0308_SUBSAMPLE CCI_REG8(0x154) +#define GC0308_SUBMODE CCI_REG8(0x155) +#define GC0308_SUB_ROW_N1 CCI_REG8(0x156) +#define GC0308_SUB_ROW_N2 CCI_REG8(0x157) +#define GC0308_SUB_COL_N1 CCI_REG8(0x158) +#define GC0308_SUB_COL_N2 CCI_REG8(0x159) + +/* AWB (P1) - Auto White Balance */ +#define GC0308_AWB_RGB_HIGH_LOW CCI_REG8(0x100) +#define GC0308_AWB_Y_TO_C_DIFF2 CCI_REG8(0x102) +#define GC0308_AWB_C_MAX CCI_REG8(0x104) +#define GC0308_AWB_C_INTER CCI_REG8(0x105) +#define GC0308_AWB_C_INTER2 CCI_REG8(0x106) +#define GC0308_AWB_C_MAX_BIG CCI_REG8(0x108) +#define GC0308_AWB_Y_HIGH CCI_REG8(0x109) +#define GC0308_AWB_NUMBER_LIMIT CCI_REG8(0x10a) +#define GC0308_KWIN_RATIO CCI_REG8(0x10b) +#define GC0308_KWIN_THD CCI_REG8(0x10c) +#define GC0308_LIGHT_GAIN_RANGE CCI_REG8(0x10d) +#define GC0308_SMALL_WIN_WIDTH_STEP CCI_REG8(0x10e) +#define GC0308_SMALL_WIN_HEIGHT_STEP CCI_REG8(0x10f) +#define GC0308_AWB_YELLOW_TH CCI_REG8(0x110) +#define GC0308_AWB_MODE CCI_REG8(0x111) +#define GC0308_AWB_ADJUST_SPEED CCI_REG8(0x112) +#define GC0308_AWB_EVERY_N CCI_REG8(0x113) +#define GC0308_R_AVG_USE CCI_REG8(0x1d0) +#define GC0308_G_AVG_USE CCI_REG8(0x1d1) +#define GC0308_B_AVG_USE CCI_REG8(0x1d2) + +#define GC0308_HBLANK_MIN 0x021 +#define GC0308_HBLANK_MAX 0xfff +#define GC0308_HBLANK_DEF 0x040 + +#define GC0308_VBLANK_MIN 0x000 +#define GC0308_VBLANK_MAX 0xfff +#define GC0308_VBLANK_DEF 0x020 + +#define GC0308_PIXEL_RATE 24000000 + +/* + * frame_time = (BT + height + 8) * row_time + * width = 640 (driver does not change window size) + * height = 480 (driver does not change window size) + * row_time = HBLANK + SAMPLE_HOLD_DELAY + width + 8 + 4 + * + * When EXP_TIME > (BT + height): + * BT = EXP_TIME - height - 8 - VS_START_TIME + VS_END_TIME + * else: + * BT = VBLANK + VS_START_TIME + VS_END_TIME + * + * max is 30 FPS + * + * In my tests frame rate mostly depends on exposure time. Unfortuantely + * it's unclear how this is calculated exactly. Also since we enable AEC, + * the frame times vary depending on ambient light conditions. + */ +#define GC0308_FRAME_RATE_MAX 30 + +enum gc0308_exp_val { + GC0308_EXP_M4 = 0, + GC0308_EXP_M3, + GC0308_EXP_M2, + GC0308_EXP_M1, + GC0308_EXP_0, + GC0308_EXP_P1, + GC0308_EXP_P2, + GC0308_EXP_P3, + GC0308_EXP_P4, +}; + +static const s64 gc0308_exposure_menu[] = { + -4, -3, -2, -1, 0, 1, 2, 3, 4 +}; + +struct gc0308_exposure { + u8 luma_offset; + u8 aec_target_y; +}; + +#define GC0308_EXPOSURE(luma_offset_reg, aec_target_y_reg) \ + { .luma_offset = luma_offset_reg, .aec_target_y = aec_target_y_reg } + +static const struct gc0308_exposure gc0308_exposure_values[] = { + [GC0308_EXP_M4] = GC0308_EXPOSURE(0xc0, 0x30), + [GC0308_EXP_M3] = GC0308_EXPOSURE(0xd0, 0x38), + [GC0308_EXP_M2] = GC0308_EXPOSURE(0xe0, 0x40), + [GC0308_EXP_M1] = GC0308_EXPOSURE(0xf0, 0x48), + [GC0308_EXP_0] = GC0308_EXPOSURE(0x08, 0x50), + [GC0308_EXP_P1] = GC0308_EXPOSURE(0x10, 0x5c), + [GC0308_EXP_P2] = GC0308_EXPOSURE(0x20, 0x60), + [GC0308_EXP_P3] = GC0308_EXPOSURE(0x30, 0x68), + [GC0308_EXP_P4] = GC0308_EXPOSURE(0x40, 0x70), +}; + +struct gc0308_awb_gains { + u8 r; + u8 g; + u8 b; +}; + +#define GC0308_AWB_GAINS(red, green, blue) \ + { .r = red, .g = green, .b = blue } + +static const struct gc0308_awb_gains gc0308_awb_gains[] = { + [V4L2_WHITE_BALANCE_AUTO] = GC0308_AWB_GAINS(0x56, 0x40, 0x4a), + [V4L2_WHITE_BALANCE_CLOUDY] = GC0308_AWB_GAINS(0x8c, 0x50, 0x40), + [V4L2_WHITE_BALANCE_DAYLIGHT] = GC0308_AWB_GAINS(0x74, 0x52, 0x40), + [V4L2_WHITE_BALANCE_INCANDESCENT] = GC0308_AWB_GAINS(0x48, 0x40, 0x5c), + [V4L2_WHITE_BALANCE_FLUORESCENT] = GC0308_AWB_GAINS(0x40, 0x42, 0x50), +}; + +struct gc0308_format { + u32 code; + u8 regval; +}; + +#define GC0308_FORMAT(v4l2_code, gc0308_regval) \ + { .code = v4l2_code, .regval = gc0308_regval } + +static const struct gc0308_format gc0308_formats[] = { + GC0308_FORMAT(MEDIA_BUS_FMT_UYVY8_2X8, 0x00), + GC0308_FORMAT(MEDIA_BUS_FMT_VYUY8_2X8, 0x01), + GC0308_FORMAT(MEDIA_BUS_FMT_YUYV8_2X8, 0x02), + GC0308_FORMAT(MEDIA_BUS_FMT_YVYU8_2X8, 0x03), + GC0308_FORMAT(MEDIA_BUS_FMT_RGB565_2X8_BE, 0x06), + GC0308_FORMAT(MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE, 0x07), + GC0308_FORMAT(MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE, 0x09), +}; + +struct gc0308_frame_size { + u8 subsample; + u32 width; + u32 height; +}; + +#define GC0308_FRAME_SIZE(s, w, h) \ + { .subsample = s, .width = w, .height = h } + +static const struct gc0308_frame_size gc0308_frame_sizes[] = { + GC0308_FRAME_SIZE(0x11, 640, 480), + GC0308_FRAME_SIZE(0x22, 320, 240), + GC0308_FRAME_SIZE(0x44, 160, 120), +}; + +struct gc0308_mode_registers { + u8 out_format; + u8 subsample; + u16 width; + u16 height; +}; + +struct gc0308 { + struct v4l2_subdev sd; + struct v4l2_ctrl_handler hdl; + struct media_pad pad; + struct device *dev; + struct clk *clk; + struct regmap *regmap; + struct regulator *vdd; + struct gpio_desc *pwdn_gpio; + struct gpio_desc *reset_gpio; + unsigned int mbus_config; + struct gc0308_mode_registers mode; + struct { + /* mirror cluster */ + struct v4l2_ctrl *hflip; + struct v4l2_ctrl *vflip; + }; + struct { + /* blanking cluster */ + struct v4l2_ctrl *hblank; + struct v4l2_ctrl *vblank; + }; +}; + +static inline struct gc0308 *to_gc0308(struct v4l2_subdev *sd) +{ + return container_of(sd, struct gc0308, sd); +} + +static const struct regmap_range_cfg gc0308_ranges[] = { + { + .range_min = 0x0000, + .range_max = 0x01ff, + .selector_reg = 0xfe, + .selector_mask = 0x01, + .selector_shift = 0x00, + .window_start = 0x00, + .window_len = 0x100, + }, +}; + +static const struct regmap_config gc0308_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .reg_format_endian = REGMAP_ENDIAN_BIG, + .max_register = 0x1ff, + .ranges = gc0308_ranges, + .num_ranges = ARRAY_SIZE(gc0308_ranges), + .disable_locking = true, +}; + +static const struct cci_reg_sequence sensor_default_regs[] = { + {GC0308_VB_HB, 0x00}, + {GC0308_HBLANK, 0x40}, + {GC0308_VBLANK, 0x20}, + {GC0308_EXP, 0x0258}, + {GC0308_AWB_R_GAIN, 0x56}, + {GC0308_AWB_G_GAIN, 0x40}, + {GC0308_AWB_B_GAIN, 0x4a}, + {GC0308_ANTI_FLICKER_STEP, 0x0078}, + {GC0308_EXP_LVL_1, 0x0258}, + {GC0308_EXP_LVL_2, 0x0258}, + {GC0308_EXP_LVL_3, 0x0258}, + {GC0308_EXP_LVL_4, 0x0ea6}, + {GC0308_MAX_EXP_LVL, 0x20}, + {GC0308_ROW_START, 0x0000}, + {GC0308_COL_START, 0x0000}, + {GC0308_WIN_HEIGHT, 488}, + {GC0308_WIN_WIDTH, 648}, + {GC0308_VS_START_TIME, 0x02}, + {GC0308_VS_END_TIME, 0x02}, + {GC0308_RSH_WIDTH, 0x22}, + {GC0308_TSP_WIDTH, 0x0d}, + {GC0308_SAMPLE_HOLD_DELAY, 0x50}, + {GC0308_ROW_TAIL_WIDTH, 0x0f}, + {GC0308_CISCTL_MODE1, 0x10}, + {GC0308_CISCTL_MODE2, 0x0a}, + {GC0308_CISCTL_MODE3, 0x05}, + {GC0308_CISCTL_MODE4, 0x01}, + {CCI_REG8(0x018), 0x44}, /* undocumented */ + {CCI_REG8(0x019), 0x44}, /* undocumented */ + {GC0308_ANALOG_MODE1, 0x2a}, + {GC0308_ANALOG_MODE2, 0x00}, + {GC0308_HRST_RSG_V18, 0x49}, + {GC0308_VREF_V25, 0x9a}, + {GC0308_ADC_R, 0x61}, + {GC0308_PAD_DRV, 0x01}, /* drv strength: pclk=4mA */ + {GC0308_BLOCK_EN1, 0x7f}, + {GC0308_BLOCK_EN2, 0xfa}, + {GC0308_AAAA_EN, 0x57}, + {GC0308_OUT_FORMAT, 0xa2}, /* YCbYCr */ + {GC0308_OUT_EN, 0x0f}, + {GC0308_SYNC_MODE, 0x03}, + {GC0308_CLK_DIV_MODE, 0x00}, + {GC0308_DEBUG_MODE1, 0x0a}, + {GC0308_DEBUG_MODE2, 0x00}, + {GC0308_DEBUG_MODE3, 0x01}, + {GC0308_BLK_MODE, 0xf7}, + {GC0308_BLK_LIMIT_VAL, 0x50}, + {GC0308_GLOBAL_OFF, 0x00}, + {GC0308_CURRENT_R_OFF, 0x28}, + {GC0308_CURRENT_G_OFF, 0x2a}, + {GC0308_CURRENT_B_OFF, 0x28}, + {GC0308_EXP_RATE_DARKC, 0x04}, + {GC0308_OFF_SUBMODE, 0x20}, + {GC0308_DARKC_SUBMODE, 0x20}, + {GC0308_MANUAL_G1_OFF, 0x00}, + {GC0308_MANUAL_R1_OFF, 0x00}, + {GC0308_MANUAL_B2_OFF, 0x00}, + {GC0308_MANUAL_G2_OFF, 0x00}, + {GC0308_GLOBAL_GAIN, 0x14}, + {GC0308_AUTO_POSTGAIN, 0x41}, + {GC0308_CHANNEL_GAIN_G1, 0x80}, + {GC0308_CHANNEL_GAIN_R, 0x80}, + {GC0308_CHANNEL_GAIN_B, 0x80}, + {GC0308_CHANNEL_GAIN_G2, 0x80}, + {GC0308_LSC_RED_B2, 0x20}, + {GC0308_LSC_GREEN_B2, 0x20}, + {GC0308_LSC_BLUE_B2, 0x20}, + {GC0308_LSC_RED_B4, 0x14}, + {GC0308_LSC_GREEN_B4, 0x10}, + {GC0308_LSC_BLUE_B4, 0x14}, + {GC0308_LSC_ROW_CENTER, 0x3c}, + {GC0308_LSC_COL_CENTER, 0x50}, + {GC0308_LSC_DEC_LVL1, 0x12}, + {GC0308_LSC_DEC_LVL2, 0x1a}, + {GC0308_LSC_DEC_LVL3, 0x24}, + {GC0308_DN_MODE_EN, 0x07}, + {GC0308_DN_MODE_RATIO, 0x15}, + {GC0308_DN_BILAT_B_BASE, 0x08}, + {GC0308_DN_BILAT_N_BASE, 0x03}, + {GC0308_DD_DARK_BRIGHT_TH, 0xe8}, + {GC0308_DD_FLAT_TH, 0x86}, + {GC0308_DD_LIMIT, 0x82}, + {GC0308_ASDE_GAIN_TRESH, 0x18}, + {GC0308_ASDE_GAIN_MODE, 0x0f}, + {GC0308_ASDE_DN_SLOPE, 0x00}, + {GC0308_ASDE_DD_BRIGHT, 0x5f}, + {GC0308_ASDE_DD_LIMIT, 0x8f}, + {GC0308_ASDE_AUTO_EE1, 0x55}, + {GC0308_ASDE_AUTO_EE2, 0x38}, + {GC0308_ASDE_AUTO_SAT_DEC_SLOPE, 0x15}, + {GC0308_ASDE_AUTO_SAT_LOW_LIMIT, 0x33}, + {GC0308_EEINTP_MODE_1, 0xdc}, + {GC0308_EEINTP_MODE_2, 0x00}, + {GC0308_DIRECTION_TH1, 0x02}, + {GC0308_DIRECTION_TH2, 0x3f}, + {GC0308_DIFF_HV_TI_TH, 0x02}, + {GC0308_EDGE12_EFFECT, 0x38}, + {GC0308_EDGE_POS_RATIO, 0x88}, + {GC0308_EDGE1_MINMAX, 0x81}, + {GC0308_EDGE2_MINMAX, 0x81}, + {GC0308_EDGE12_TH, 0x22}, + {GC0308_EDGE_MAX, 0xff}, + {GC0308_CC_MATRIX_C11, 0x48}, + {GC0308_CC_MATRIX_C12, 0x02}, + {GC0308_CC_MATRIX_C13, 0x07}, + {GC0308_CC_MATRIX_C21, 0xe0}, + {GC0308_CC_MATRIX_C22, 0x40}, + {GC0308_CC_MATRIX_C23, 0xf0}, + {GC0308_SATURATION_CB, 0x40}, + {GC0308_SATURATION_CR, 0x40}, + {GC0308_LUMA_CONTRAST, 0x40}, + {GC0308_SKIN_CB_CENTER, 0xe0}, + {GC0308_EDGE_DEC_SA, 0x38}, + {GC0308_AUTO_GRAY_MODE, 0x36}, + {GC0308_AEC_MODE1, 0xcb}, + {GC0308_AEC_MODE2, 0x10}, + {GC0308_AEC_MODE3, 0x90}, + {GC0308_AEC_TARGET_Y, 0x48}, + {GC0308_AEC_HIGH_LOW_RANGE, 0xf2}, + {GC0308_AEC_IGNORE, 0x16}, + {GC0308_AEC_SLOW_MARGIN, 0x92}, + {GC0308_AEC_FAST_MARGIN, 0xa5}, + {GC0308_AEC_I_FRAMES, 0x23}, + {GC0308_AEC_R_OFFSET, 0x00}, + {GC0308_AEC_GB_OFFSET, 0x00}, + {GC0308_AEC_I_STOP_L_MARGIN, 0x09}, + {GC0308_EXP_MIN_L, 0x04}, + {GC0308_MAX_POST_DF_GAIN, 0xa0}, + {GC0308_MAX_PRE_DG_GAIN, 0x40}, + {GC0308_ABB_MODE, 0x03}, + {GC0308_GAMMA_OUT0, 0x10}, + {GC0308_GAMMA_OUT1, 0x20}, + {GC0308_GAMMA_OUT2, 0x38}, + {GC0308_GAMMA_OUT3, 0x4e}, + {GC0308_GAMMA_OUT4, 0x63}, + {GC0308_GAMMA_OUT5, 0x76}, + {GC0308_GAMMA_OUT6, 0x87}, + {GC0308_GAMMA_OUT7, 0xa2}, + {GC0308_GAMMA_OUT8, 0xb8}, + {GC0308_GAMMA_OUT9, 0xca}, + {GC0308_GAMMA_OUT10, 0xd8}, + {GC0308_GAMMA_OUT11, 0xe3}, + {GC0308_GAMMA_OUT12, 0xeb}, + {GC0308_GAMMA_OUT13, 0xf0}, + {GC0308_GAMMA_OUT14, 0xf8}, + {GC0308_GAMMA_OUT15, 0xfd}, + {GC0308_GAMMA_OUT16, 0xff}, + {GC0308_Y_GAMMA_OUT0, 0x00}, + {GC0308_Y_GAMMA_OUT1, 0x10}, + {GC0308_Y_GAMMA_OUT2, 0x1c}, + {GC0308_Y_GAMMA_OUT3, 0x30}, + {GC0308_Y_GAMMA_OUT4, 0x43}, + {GC0308_Y_GAMMA_OUT5, 0x54}, + {GC0308_Y_GAMMA_OUT6, 0x65}, + {GC0308_Y_GAMMA_OUT7, 0x75}, + {GC0308_Y_GAMMA_OUT8, 0x93}, + {GC0308_Y_GAMMA_OUT9, 0xb0}, + {GC0308_Y_GAMMA_OUT10, 0xcb}, + {GC0308_Y_GAMMA_OUT11, 0xe6}, + {GC0308_Y_GAMMA_OUT12, 0xff}, + {GC0308_ABS_RANGE_COMP, 0x02}, + {GC0308_ABS_STOP_MARGIN, 0x01}, + {GC0308_Y_S_COMP, 0x02}, + {GC0308_Y_STRETCH_LIMIT, 0x30}, + {GC0308_BIG_WIN_X0, 0x12}, + {GC0308_BIG_WIN_Y0, 0x0a}, + {GC0308_BIG_WIN_X1, 0x9f}, + {GC0308_BIG_WIN_Y1, 0x78}, + {GC0308_AWB_RGB_HIGH_LOW, 0xf5}, + {GC0308_AWB_Y_TO_C_DIFF2, 0x20}, + {GC0308_AWB_C_MAX, 0x10}, + {GC0308_AWB_C_INTER, 0x08}, + {GC0308_AWB_C_INTER2, 0x20}, + {GC0308_AWB_C_MAX_BIG, 0x0a}, + {GC0308_AWB_NUMBER_LIMIT, 0xa0}, + {GC0308_KWIN_RATIO, 0x60}, + {GC0308_KWIN_THD, 0x08}, + {GC0308_SMALL_WIN_WIDTH_STEP, 0x44}, + {GC0308_SMALL_WIN_HEIGHT_STEP, 0x32}, + {GC0308_AWB_YELLOW_TH, 0x41}, + {GC0308_AWB_MODE, 0x37}, + {GC0308_AWB_ADJUST_SPEED, 0x22}, + {GC0308_AWB_EVERY_N, 0x19}, + {CCI_REG8(0x114), 0x44}, /* AWB set1 */ + {CCI_REG8(0x115), 0x44}, /* AWB set1 */ + {CCI_REG8(0x116), 0xc2}, /* AWB set1 */ + {CCI_REG8(0x117), 0xa8}, /* AWB set1 */ + {CCI_REG8(0x118), 0x18}, /* AWB set1 */ + {CCI_REG8(0x119), 0x50}, /* AWB set1 */ + {CCI_REG8(0x11a), 0xd8}, /* AWB set1 */ + {CCI_REG8(0x11b), 0xf5}, /* AWB set1 */ + {CCI_REG8(0x170), 0x40}, /* AWB set2 */ + {CCI_REG8(0x171), 0x58}, /* AWB set2 */ + {CCI_REG8(0x172), 0x30}, /* AWB set2 */ + {CCI_REG8(0x173), 0x48}, /* AWB set2 */ + {CCI_REG8(0x174), 0x20}, /* AWB set2 */ + {CCI_REG8(0x175), 0x60}, /* AWB set2 */ + {CCI_REG8(0x177), 0x20}, /* AWB set2 */ + {CCI_REG8(0x178), 0x32}, /* AWB set2 */ + {CCI_REG8(0x130), 0x03}, /* undocumented */ + {CCI_REG8(0x131), 0x40}, /* undocumented */ + {CCI_REG8(0x132), 0x10}, /* undocumented */ + {CCI_REG8(0x133), 0xe0}, /* undocumented */ + {CCI_REG8(0x134), 0xe0}, /* undocumented */ + {CCI_REG8(0x135), 0x00}, /* undocumented */ + {CCI_REG8(0x136), 0x80}, /* undocumented */ + {CCI_REG8(0x137), 0x00}, /* undocumented */ + {CCI_REG8(0x138), 0x04}, /* undocumented */ + {CCI_REG8(0x139), 0x09}, /* undocumented */ + {CCI_REG8(0x13a), 0x12}, /* undocumented */ + {CCI_REG8(0x13b), 0x1c}, /* undocumented */ + {CCI_REG8(0x13c), 0x28}, /* undocumented */ + {CCI_REG8(0x13d), 0x31}, /* undocumented */ + {CCI_REG8(0x13e), 0x44}, /* undocumented */ + {CCI_REG8(0x13f), 0x57}, /* undocumented */ + {CCI_REG8(0x140), 0x6c}, /* undocumented */ + {CCI_REG8(0x141), 0x81}, /* undocumented */ + {CCI_REG8(0x142), 0x94}, /* undocumented */ + {CCI_REG8(0x143), 0xa7}, /* undocumented */ + {CCI_REG8(0x144), 0xb8}, /* undocumented */ + {CCI_REG8(0x145), 0xd6}, /* undocumented */ + {CCI_REG8(0x146), 0xee}, /* undocumented */ + {CCI_REG8(0x147), 0x0d}, /* undocumented */ + {CCI_REG8(0x162), 0xf7}, /* undocumented */ + {CCI_REG8(0x163), 0x68}, /* undocumented */ + {CCI_REG8(0x164), 0xd3}, /* undocumented */ + {CCI_REG8(0x165), 0xd3}, /* undocumented */ + {CCI_REG8(0x166), 0x60}, /* undocumented */ +}; + +struct gc0308_colormode { + u8 special_effect; + u8 dbg_mode1; + u8 block_en1; + u8 aec_mode3; + u8 eeintp_mode_2; + u8 edge12_effect; + u8 luma_contrast; + u8 contrast_center; + u8 fixed_cb; + u8 fixed_cr; +}; + +#define GC0308_COLOR_FX(reg_special_effect, reg_dbg_mode1, reg_block_en1, \ + reg_aec_mode3, reg_eeintp_mode_2, reg_edge12_effect, \ + reg_luma_contrast, reg_contrast_center, \ + reg_fixed_cb, reg_fixed_cr) \ + { \ + .special_effect = reg_special_effect, \ + .dbg_mode1 = reg_dbg_mode1, \ + .block_en1 = reg_block_en1, \ + .aec_mode3 = reg_aec_mode3, \ + .eeintp_mode_2 = reg_eeintp_mode_2, \ + .edge12_effect = reg_edge12_effect, \ + .luma_contrast = reg_luma_contrast, \ + .contrast_center = reg_contrast_center, \ + .fixed_cb = reg_fixed_cb, \ + .fixed_cr = reg_fixed_cr, \ + } + +static const struct gc0308_colormode gc0308_colormodes[] = { + [V4L2_COLORFX_NONE] = + GC0308_COLOR_FX(0x00, 0x0a, 0xff, 0x90, 0x00, + 0x54, 0x3c, 0x80, 0x00, 0x00), + [V4L2_COLORFX_BW] = + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00, + 0x54, 0x40, 0x80, 0x00, 0x00), + [V4L2_COLORFX_SEPIA] = + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00, + 0x38, 0x40, 0x80, 0xd0, 0x28), + [V4L2_COLORFX_NEGATIVE] = + GC0308_COLOR_FX(0x01, 0x0a, 0xff, 0x90, 0x00, + 0x38, 0x40, 0x80, 0x00, 0x00), + [V4L2_COLORFX_EMBOSS] = + GC0308_COLOR_FX(0x02, 0x0a, 0xbf, 0x10, 0x01, + 0x38, 0x40, 0x80, 0x00, 0x00), + [V4L2_COLORFX_SKETCH] = + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x10, 0x80, + 0x38, 0x80, 0x90, 0x00, 0x00), + [V4L2_COLORFX_SKY_BLUE] = + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00, + 0x38, 0x40, 0x80, 0x50, 0xe0), + [V4L2_COLORFX_GRASS_GREEN] = + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x01, + 0x38, 0x40, 0x80, 0xc0, 0xc0), + [V4L2_COLORFX_SKIN_WHITEN] = + GC0308_COLOR_FX(0x02, 0x0a, 0xbf, 0x10, 0x01, + 0x38, 0x60, 0x40, 0x00, 0x00), +}; + +static int gc0308_power_on(struct device *dev) +{ + struct gc0308 *gc0308 = dev_get_drvdata(dev); + int ret; + + ret = regulator_enable(gc0308->vdd); + if (ret) + return ret; + + ret = clk_prepare_enable(gc0308->clk); + if (ret) + goto clk_fail; + + gpiod_set_value_cansleep(gc0308->pwdn_gpio, 0); + usleep_range(10000, 20000); + + gpiod_set_value_cansleep(gc0308->reset_gpio, 1); + usleep_range(10000, 20000); + gpiod_set_value_cansleep(gc0308->reset_gpio, 0); + msleep(30); + + return 0; + +clk_fail: + regulator_disable(gc0308->vdd); + return ret; +} + +static int gc0308_power_off(struct device *dev) +{ + struct gc0308 *gc0308 = dev_get_drvdata(dev); + + gpiod_set_value_cansleep(gc0308->pwdn_gpio, 1); + clk_disable_unprepare(gc0308->clk); + regulator_disable(gc0308->vdd); + + return 0; +} + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int gc0308_g_register(struct v4l2_subdev *sd, + struct v4l2_dbg_register *reg) +{ + struct gc0308 *gc0308 = to_gc0308(sd); + + return cci_read(gc0308->regmap, CCI_REG8(reg->reg), ®->val, NULL); +} + +static int gc0308_s_register(struct v4l2_subdev *sd, + const struct v4l2_dbg_register *reg) +{ + struct gc0308 *gc0308 = to_gc0308(sd); + + return cci_write(gc0308->regmap, CCI_REG8(reg->reg), reg->val, NULL); +} +#endif + +static int gc0308_set_exposure(struct gc0308 *gc0308, enum gc0308_exp_val exp) +{ + const struct gc0308_exposure *regs = &gc0308_exposure_values[exp]; + struct cci_reg_sequence exposure_reg_seq[] = { + {GC0308_LUMA_OFFSET, regs->luma_offset}, + {GC0308_AEC_TARGET_Y, regs->aec_target_y}, + }; + + return cci_multi_reg_write(gc0308->regmap, exposure_reg_seq, + ARRAY_SIZE(exposure_reg_seq), NULL); +} + +static int gc0308_set_awb_mode(struct gc0308 *gc0308, + enum v4l2_auto_n_preset_white_balance val) +{ + const struct gc0308_awb_gains *regs = &gc0308_awb_gains[val]; + struct cci_reg_sequence awb_reg_seq[] = { + {GC0308_AWB_R_GAIN, regs->r}, + {GC0308_AWB_G_GAIN, regs->g}, + {GC0308_AWB_B_GAIN, regs->b}, + }; + int ret; + + ret = cci_update_bits(gc0308->regmap, GC0308_AAAA_EN, + BIT(1), val == V4L2_WHITE_BALANCE_AUTO, NULL); + ret = cci_multi_reg_write(gc0308->regmap, awb_reg_seq, + ARRAY_SIZE(awb_reg_seq), &ret); + + return ret; +} + +static int gc0308_set_colormode(struct gc0308 *gc0308, enum v4l2_colorfx mode) +{ + const struct gc0308_colormode *regs = &gc0308_colormodes[mode]; + struct cci_reg_sequence colormode_reg_seq[] = { + {GC0308_SPECIAL_EFFECT, regs->special_effect}, + {GC0308_DEBUG_MODE1, regs->dbg_mode1}, + {GC0308_BLOCK_EN1, regs->block_en1}, + {GC0308_AEC_MODE3, regs->aec_mode3}, + {GC0308_EEINTP_MODE_2, regs->eeintp_mode_2}, + {GC0308_EDGE12_EFFECT, regs->edge12_effect}, + {GC0308_LUMA_CONTRAST, regs->luma_contrast}, + {GC0308_CONTRAST_CENTER, regs->contrast_center}, + {GC0308_FIXED_CB, regs->fixed_cb}, + {GC0308_FIXED_CR, regs->fixed_cr}, + }; + + return cci_multi_reg_write(gc0308->regmap, colormode_reg_seq, + ARRAY_SIZE(colormode_reg_seq), NULL); +} + +static int gc0308_set_power_line_freq(struct gc0308 *gc0308, int frequency) +{ + static const struct cci_reg_sequence pwr_line_50hz[] = { + {GC0308_ANTI_FLICKER_STEP, 0x0078}, + {GC0308_EXP_LVL_1, 0x0258}, + {GC0308_EXP_LVL_2, 0x0348}, + {GC0308_EXP_LVL_3, 0x04b0}, + {GC0308_EXP_LVL_4, 0x05a0}, + }; + static const struct cci_reg_sequence pwr_line_60hz[] = { + {GC0308_ANTI_FLICKER_STEP, 0x0064}, + {GC0308_EXP_LVL_1, 0x0258}, + {GC0308_EXP_LVL_2, 0x0384}, + {GC0308_EXP_LVL_3, 0x04b0}, + {GC0308_EXP_LVL_4, 0x05dc}, + }; + + switch (frequency) { + case V4L2_CID_POWER_LINE_FREQUENCY_60HZ: + return cci_multi_reg_write(gc0308->regmap, pwr_line_60hz, + ARRAY_SIZE(pwr_line_60hz), NULL); + case V4L2_CID_POWER_LINE_FREQUENCY_50HZ: + return cci_multi_reg_write(gc0308->regmap, pwr_line_50hz, + ARRAY_SIZE(pwr_line_50hz), NULL); + } + + return -EINVAL; +} + +static int gc0308_update_mirror(struct gc0308 *gc0308) +{ + u8 regval = 0x00; + + if (gc0308->vflip->val) + regval |= BIT(1); + + if (gc0308->hflip->val) + regval |= BIT(0); + + return cci_update_bits(gc0308->regmap, GC0308_CISCTL_MODE1, + GENMASK(1, 0), regval, NULL); +} + +static int gc0308_update_blanking(struct gc0308 *gc0308) +{ + u16 vblank = gc0308->vblank->val; + u16 hblank = gc0308->hblank->val; + u8 vbhb = ((vblank >> 4) & 0xf0) | ((hblank >> 8) & 0x0f); + int ret = 0; + + cci_write(gc0308->regmap, GC0308_VB_HB, vbhb, &ret); + cci_write(gc0308->regmap, GC0308_HBLANK, hblank & 0xff, &ret); + cci_write(gc0308->regmap, GC0308_VBLANK, vblank & 0xff, &ret); + + return ret; +} + +static int _gc0308_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct gc0308 *gc0308 = container_of(ctrl->handler, struct gc0308, hdl); + u8 flipval = ctrl->val ? 0xff : 0x00; + + switch (ctrl->id) { + case V4L2_CID_HBLANK: + case V4L2_CID_VBLANK: + return gc0308_update_blanking(gc0308); + case V4L2_CID_VFLIP: + case V4L2_CID_HFLIP: + return gc0308_update_mirror(gc0308); + case V4L2_CID_AUTO_WHITE_BALANCE: + return cci_update_bits(gc0308->regmap, GC0308_AAAA_EN, + BIT(1), flipval, NULL); + case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: + return gc0308_set_awb_mode(gc0308, ctrl->val); + case V4L2_CID_POWER_LINE_FREQUENCY: + return gc0308_set_power_line_freq(gc0308, ctrl->val); + case V4L2_CID_COLORFX: + return gc0308_set_colormode(gc0308, ctrl->val); + case V4L2_CID_TEST_PATTERN: + return cci_update_bits(gc0308->regmap, GC0308_DEBUG_MODE2, + GENMASK(1, 0), ctrl->val, NULL); + case V4L2_CID_AUTO_EXPOSURE_BIAS: + return gc0308_set_exposure(gc0308, ctrl->val); + } + + return -EINVAL; +} + +static int gc0308_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct gc0308 *gc0308 = container_of(ctrl->handler, struct gc0308, hdl); + int ret; + + if (!pm_runtime_get_if_in_use(gc0308->dev)) + return 0; + + ret = _gc0308_s_ctrl(ctrl); + if (ret) + dev_err(gc0308->dev, "failed to set control: %d\n", ret); + + pm_runtime_mark_last_busy(gc0308->dev); + pm_runtime_put_autosuspend(gc0308->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops gc0308_ctrl_ops = { + .s_ctrl = gc0308_s_ctrl, +}; + +static const struct v4l2_subdev_core_ops gc0308_core_ops = { + .log_status = v4l2_ctrl_subdev_log_status, + .subscribe_event = v4l2_ctrl_subdev_subscribe_event, + .unsubscribe_event = v4l2_event_subdev_unsubscribe, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .g_register = gc0308_g_register, + .s_register = gc0308_s_register, +#endif +}; + +static int gc0308_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->index >= ARRAY_SIZE(gc0308_formats)) + return -EINVAL; + + code->code = gc0308_formats[code->index].code; + + return 0; +} + +static int gc0308_get_format_idx(u32 code) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(gc0308_formats); i++) { + if (gc0308_formats[i].code == code) + return i; + } + + return -1; +} + +static int gc0308_enum_frame_size(struct v4l2_subdev *subdev, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_size_enum *fse) +{ + if (fse->index >= ARRAY_SIZE(gc0308_frame_sizes)) + return -EINVAL; + + if (gc0308_get_format_idx(fse->code) < 0) + return -EINVAL; + + fse->min_width = gc0308_frame_sizes[fse->index].width; + fse->max_width = gc0308_frame_sizes[fse->index].width; + fse->min_height = gc0308_frame_sizes[fse->index].height; + fse->max_height = gc0308_frame_sizes[fse->index].height; + + return 0; +} + +static void gc0308_update_pad_format(const struct gc0308_frame_size *mode, + struct v4l2_mbus_framefmt *fmt, u32 code) +{ + fmt->width = mode->width; + fmt->height = mode->height; + fmt->code = code; + fmt->field = V4L2_FIELD_NONE; + fmt->colorspace = V4L2_COLORSPACE_SRGB; +} + +static int gc0308_set_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct gc0308 *gc0308 = to_gc0308(sd); + const struct gc0308_frame_size *mode; + int i = gc0308_get_format_idx(fmt->format.code); + + if (i < 0) + i = 0; + + mode = v4l2_find_nearest_size(gc0308_frame_sizes, + ARRAY_SIZE(gc0308_frame_sizes), width, + height, fmt->format.width, + fmt->format.height); + + gc0308_update_pad_format(mode, &fmt->format, gc0308_formats[i].code); + *v4l2_subdev_state_get_format(sd_state, 0) = fmt->format; + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) + return 0; + + gc0308->mode.out_format = gc0308_formats[i].regval; + gc0308->mode.subsample = mode->subsample; + gc0308->mode.width = mode->width; + gc0308->mode.height = mode->height; + + return 0; +} + +static int gc0308_init_state(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state) +{ + struct v4l2_mbus_framefmt *format = + v4l2_subdev_state_get_format(sd_state, 0); + + format->width = 640; + format->height = 480; + format->code = gc0308_formats[0].code; + format->colorspace = V4L2_COLORSPACE_SRGB; + format->field = V4L2_FIELD_NONE; + format->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; + format->quantization = V4L2_QUANTIZATION_DEFAULT; + format->xfer_func = V4L2_XFER_FUNC_DEFAULT; + + return 0; +} + +static const struct v4l2_subdev_pad_ops gc0308_pad_ops = { + .enum_mbus_code = gc0308_enum_mbus_code, + .enum_frame_size = gc0308_enum_frame_size, + .get_fmt = v4l2_subdev_get_fmt, + .set_fmt = gc0308_set_format, +}; + +static int gc0308_set_resolution(struct gc0308 *gc0308, int *ret) +{ + struct cci_reg_sequence resolution_regs[] = { + {GC0308_SUBSAMPLE, gc0308->mode.subsample}, + {GC0308_SUBMODE, 0x03}, + {GC0308_SUB_ROW_N1, 0x00}, + {GC0308_SUB_ROW_N2, 0x00}, + {GC0308_SUB_COL_N1, 0x00}, + {GC0308_SUB_COL_N2, 0x00}, + {GC0308_CROP_WIN_MODE, 0x80}, + {GC0308_CROP_WIN_Y1, 0x00}, + {GC0308_CROP_WIN_X1, 0x00}, + {GC0308_CROP_WIN_HEIGHT, gc0308->mode.height}, + {GC0308_CROP_WIN_WIDTH, gc0308->mode.width}, + }; + + return cci_multi_reg_write(gc0308->regmap, resolution_regs, + ARRAY_SIZE(resolution_regs), ret); +} + +static int gc0308_start_stream(struct gc0308 *gc0308) +{ + int ret, sync_mode; + + ret = pm_runtime_resume_and_get(gc0308->dev); + if (ret < 0) + return ret; + + cci_multi_reg_write(gc0308->regmap, sensor_default_regs, + ARRAY_SIZE(sensor_default_regs), &ret); + cci_update_bits(gc0308->regmap, GC0308_OUT_FORMAT, + GENMASK(4, 0), gc0308->mode.out_format, &ret); + gc0308_set_resolution(gc0308, &ret); + + if (ret) { + dev_err(gc0308->dev, "failed to update registers: %d\n", ret); + goto disable_pm; + } + + ret = __v4l2_ctrl_handler_setup(&gc0308->hdl); + if (ret) { + dev_err(gc0308->dev, "failed to setup controls\n"); + goto disable_pm; + } + + /* HSYNC/VSYNC polarity */ + sync_mode = 0x3; + if (gc0308->mbus_config & V4L2_MBUS_VSYNC_ACTIVE_LOW) + sync_mode &= ~BIT(0); + if (gc0308->mbus_config & V4L2_MBUS_HSYNC_ACTIVE_LOW) + sync_mode &= ~BIT(1); + ret = cci_write(gc0308->regmap, GC0308_SYNC_MODE, sync_mode, NULL); + if (ret) + goto disable_pm; + + return 0; + +disable_pm: + pm_runtime_mark_last_busy(gc0308->dev); + pm_runtime_put_autosuspend(gc0308->dev); + return ret; +} + +static int gc0308_stop_stream(struct gc0308 *gc0308) +{ + pm_runtime_mark_last_busy(gc0308->dev); + pm_runtime_put_autosuspend(gc0308->dev); + return 0; +} + +static int gc0308_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct gc0308 *gc0308 = to_gc0308(sd); + struct v4l2_subdev_state *sd_state; + int ret; + + sd_state = v4l2_subdev_lock_and_get_active_state(sd); + + if (enable) + ret = gc0308_start_stream(gc0308); + else + ret = gc0308_stop_stream(gc0308); + + v4l2_subdev_unlock_state(sd_state); + return ret; +} + +static const struct v4l2_subdev_video_ops gc0308_video_ops = { + .s_stream = gc0308_s_stream, +}; + +static const struct v4l2_subdev_ops gc0308_subdev_ops = { + .core = &gc0308_core_ops, + .pad = &gc0308_pad_ops, + .video = &gc0308_video_ops, +}; + +static const struct v4l2_subdev_internal_ops gc0308_internal_ops = { + .init_state = gc0308_init_state, +}; + +static int gc0308_bus_config(struct gc0308 *gc0308) +{ + struct device *dev = gc0308->dev; + struct v4l2_fwnode_endpoint bus_cfg = { + .bus_type = V4L2_MBUS_PARALLEL + }; + struct fwnode_handle *ep; + int ret; + + ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0, 0); + if (!ep) + return -EINVAL; + + ret = v4l2_fwnode_endpoint_parse(ep, &bus_cfg); + fwnode_handle_put(ep); + if (ret) + return ret; + + gc0308->mbus_config = bus_cfg.bus.parallel.flags; + + return 0; +} + +static const char * const gc0308_test_pattern_menu[] = { + "Disabled", + "Test Image 1", + "Test Image 2", +}; + +static int gc0308_init_controls(struct gc0308 *gc0308) +{ + int ret; + + v4l2_ctrl_handler_init(&gc0308->hdl, 11); + gc0308->hblank = v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops, + V4L2_CID_HBLANK, GC0308_HBLANK_MIN, + GC0308_HBLANK_MAX, 1, + GC0308_HBLANK_DEF); + gc0308->vblank = v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops, + V4L2_CID_VBLANK, GC0308_VBLANK_MIN, + GC0308_VBLANK_MAX, 1, + GC0308_VBLANK_DEF); + gc0308->hflip = v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops, + V4L2_CID_HFLIP, 0, 1, 1, 0); + gc0308->vflip = v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops, + V4L2_CID_VFLIP, 0, 1, 1, 0); + v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops, V4L2_CID_PIXEL_RATE, + GC0308_PIXEL_RATE, GC0308_PIXEL_RATE, 1, + GC0308_PIXEL_RATE); + v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops, + V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1); + v4l2_ctrl_new_std_menu_items(&gc0308->hdl, &gc0308_ctrl_ops, + V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(gc0308_test_pattern_menu) - 1, + 0, 0, gc0308_test_pattern_menu); + v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops, + V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE, + 8, ~0x14e, V4L2_WHITE_BALANCE_AUTO); + v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops, + V4L2_CID_COLORFX, 8, 0, V4L2_COLORFX_NONE); + v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops, + V4L2_CID_POWER_LINE_FREQUENCY, + V4L2_CID_POWER_LINE_FREQUENCY_60HZ, + ~0x6, V4L2_CID_POWER_LINE_FREQUENCY_50HZ); + v4l2_ctrl_new_int_menu(&gc0308->hdl, &gc0308_ctrl_ops, + V4L2_CID_AUTO_EXPOSURE_BIAS, + ARRAY_SIZE(gc0308_exposure_menu) - 1, + ARRAY_SIZE(gc0308_exposure_menu) / 2, + gc0308_exposure_menu); + + gc0308->sd.ctrl_handler = &gc0308->hdl; + if (gc0308->hdl.error) { + ret = gc0308->hdl.error; + v4l2_ctrl_handler_free(&gc0308->hdl); + return ret; + } + + v4l2_ctrl_cluster(2, &gc0308->hflip); + v4l2_ctrl_cluster(2, &gc0308->hblank); + + return 0; +} + +static int gc0308_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct gc0308 *gc0308; + unsigned long clkrate; + u64 regval; + int ret; + + gc0308 = devm_kzalloc(dev, sizeof(*gc0308), GFP_KERNEL); + if (!gc0308) + return -ENOMEM; + + gc0308->dev = dev; + dev_set_drvdata(dev, gc0308); + + ret = gc0308_bus_config(gc0308); + if (ret) + return dev_err_probe(dev, ret, "failed to get bus config\n"); + + gc0308->clk = devm_clk_get_optional(dev, NULL); + if (IS_ERR(gc0308->clk)) + return dev_err_probe(dev, PTR_ERR(gc0308->clk), + "could not get clk\n"); + + gc0308->vdd = devm_regulator_get(dev, "vdd28"); + if (IS_ERR(gc0308->vdd)) + return dev_err_probe(dev, PTR_ERR(gc0308->vdd), + "failed to get vdd28 regulator\n"); + + gc0308->pwdn_gpio = devm_gpiod_get(dev, "powerdown", GPIOD_OUT_LOW); + if (IS_ERR(gc0308->pwdn_gpio)) + return dev_err_probe(dev, PTR_ERR(gc0308->pwdn_gpio), + "failed to get powerdown gpio\n"); + + gc0308->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(gc0308->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(gc0308->reset_gpio), + "failed to get reset gpio\n"); + + /* + * This is not using devm_cci_regmap_init_i2c(), because the driver + * makes use of regmap's pagination feature. The chosen settings are + * compatible with the CCI helpers. + */ + gc0308->regmap = devm_regmap_init_i2c(client, &gc0308_regmap_config); + if (IS_ERR(gc0308->regmap)) + return dev_err_probe(dev, PTR_ERR(gc0308->regmap), + "failed to init regmap\n"); + + v4l2_i2c_subdev_init(&gc0308->sd, client, &gc0308_subdev_ops); + gc0308->sd.internal_ops = &gc0308_internal_ops; + gc0308->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + gc0308->sd.flags |= V4L2_SUBDEV_FL_HAS_EVENTS; + + ret = gc0308_init_controls(gc0308); + if (ret) + return dev_err_probe(dev, ret, "failed to init controls\n"); + + gc0308->sd.state_lock = gc0308->hdl.lock; + gc0308->pad.flags = MEDIA_PAD_FL_SOURCE; + gc0308->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + ret = media_entity_pads_init(&gc0308->sd.entity, 1, &gc0308->pad); + if (ret < 0) + goto fail_ctrl_hdl_cleanup; + + ret = v4l2_subdev_init_finalize(&gc0308->sd); + if (ret) + goto fail_media_entity_cleanup; + + ret = gc0308_power_on(dev); + if (ret) + goto fail_subdev_cleanup; + + if (gc0308->clk) { + clkrate = clk_get_rate(gc0308->clk); + if (clkrate != 24000000) + dev_warn(dev, "unexpected clock rate: %lu\n", clkrate); + } + + ret = cci_read(gc0308->regmap, GC0308_CHIP_ID, ®val, NULL); + if (ret < 0) { + dev_err_probe(dev, ret, "failed to read chip ID\n"); + goto fail_power_off; + } + + if (regval != 0x9b) { + ret = -EINVAL; + dev_err_probe(dev, ret, "invalid chip ID (%02llx)\n", regval); + goto fail_power_off; + } + + /* + * Enable runtime PM with autosuspend. As the device has been powered + * manually, mark it as active, and increase the usage count without + * resuming the device. + */ + 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); + + ret = v4l2_async_register_subdev(&gc0308->sd); + if (ret) { + dev_err_probe(dev, ret, "failed to register v4l subdev\n"); + goto fail_rpm; + } + + return 0; + +fail_rpm: + pm_runtime_disable(dev); + pm_runtime_put_noidle(dev); +fail_power_off: + gc0308_power_off(dev); +fail_subdev_cleanup: + v4l2_subdev_cleanup(&gc0308->sd); +fail_media_entity_cleanup: + media_entity_cleanup(&gc0308->sd.entity); +fail_ctrl_hdl_cleanup: + v4l2_ctrl_handler_free(&gc0308->hdl); + return ret; +} + +static void gc0308_remove(struct i2c_client *client) +{ + struct gc0308 *gc0308 = i2c_get_clientdata(client); + struct device *dev = &client->dev; + + v4l2_async_unregister_subdev(&gc0308->sd); + v4l2_ctrl_handler_free(&gc0308->hdl); + media_entity_cleanup(&gc0308->sd.entity); + + pm_runtime_disable(dev); + if (!pm_runtime_status_suspended(dev)) + gc0308_power_off(dev); + pm_runtime_set_suspended(dev); +} + +static const struct dev_pm_ops gc0308_pm_ops = { + SET_RUNTIME_PM_OPS(gc0308_power_off, gc0308_power_on, NULL) +}; + +static const struct of_device_id gc0308_of_match[] = { + { .compatible = "galaxycore,gc0308" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, gc0308_of_match); + +static struct i2c_driver gc0308_i2c_driver = { + .driver = { + .name = "gc0308", + .pm = &gc0308_pm_ops, + .of_match_table = gc0308_of_match, + }, + .probe = gc0308_probe, + .remove = gc0308_remove, +}; +module_i2c_driver(gc0308_i2c_driver); + +MODULE_DESCRIPTION("GalaxyCore GC0308 Camera Driver"); +MODULE_AUTHOR("Sebastian Reichel "); +MODULE_LICENSE("GPL"); -- 2.42.0