From patchwork Fri Oct 4 16:05:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 11174967 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4AD5D1709 for ; Fri, 4 Oct 2019 16:05:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C7C6222C8 for ; Fri, 4 Oct 2019 16:05:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="ALLUptHO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390335AbfJDQFv (ORCPT ); Fri, 4 Oct 2019 12:05:51 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:38946 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390332AbfJDQFu (ORCPT ); Fri, 4 Oct 2019 12:05:50 -0400 Received: by mail-pf1-f195.google.com with SMTP id v4so4170669pff.6 for ; Fri, 04 Oct 2019 09:05:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=8QkPzFGD6RoVsrtaJnuiSdEQno/1JwfDjdhTaDLO5Xs=; b=ALLUptHOQSliS8W1k+pzflELqF8g+mN8gmBkRUY0dujqIa96MnzLb1DmeY9ZreICuI afrdZrGEzdtC2wuAsNZO3OdX3bewo79BCEPO39kjhFxCax2dWRkeRWf2qM/rBsczw+vi aMGmNUB3gqkTL3MxvmVVB4Hm72jNbURepzgqqO80drkHU9wgLO5z1G2ofTaCdHK67IbW qhEnElXKupLjTA6/g46QMdiD0KykpU8vTNbjVBHUzBXGEiqpiap0BLvXuHTdqmpZeZUu 25NAMDgXe3u1QgiJCx4GyN0lW3stu2ihntg2ojDrJpV8v2cVwASDwtGUYiVDjsYq1q5S bboQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=8QkPzFGD6RoVsrtaJnuiSdEQno/1JwfDjdhTaDLO5Xs=; b=tuea9Dusoh0VEBT0drAUrXm7yrkLG8ZMLWvVp2qgZUuu0GWESlHuxSpJyM4+OEIMWl e+7BSEBOjGSp5oZeD8P+2nIwRVEQRiLxgFy5MIVQUXJenH/FebOkJF8fwkGi2FMgeYMo kgyPpWB5FddMeIMFBNOK7elFI1TqdA5HsJPvsTyZLgJKTcWgeYY2sQ8R64JO+8EBhzho kEa9RfLFpwAWON71JMIROIL5NzPokXtHS3T4S1Y1oua7K3LPDIhIAVQbt5rDFqYU5WfK BGn2vC9D5xrZ0kZJ+j8gV28KHG39+GzG5qi68P2TGDkQwjpr/pAgYAtXUi1xrGzsOR+k uQlA== X-Gm-Message-State: APjAAAVNjZdTLICgDGx/nk8yuSMJ1sR9RpnsfJL0m70Nl3fMvSDC/Iq2 BGWP/zbzITHL+T/x7ThgylSl X-Google-Smtp-Source: APXvYqxPQEx5J9WxLr/WVfotfN8qm5/D9fXtiTetWk/h7HzKlASnmXmWr3SZSX2VilFhvmuc8E/Pug== X-Received: by 2002:a17:90a:3450:: with SMTP id o74mr18066989pjb.5.1570205148931; Fri, 04 Oct 2019 09:05:48 -0700 (PDT) Received: from localhost.localdomain ([2409:4072:648a:e40a:3174:4ae1:69ba:aabb]) by smtp.gmail.com with ESMTPSA id b5sm5402254pgb.68.2019.10.04.09.05.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Oct 2019 09:05:48 -0700 (PDT) From: Manivannan Sadhasivam To: mchehab@kernel.org, robh+dt@kernel.org, sakari.ailus@iki.fi Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, c.barrett@framos.com, a.brela@framos.com, Manivannan Sadhasivam Subject: [PATCH v5 2/2] media: i2c: Add IMX290 CMOS image sensor driver Date: Fri, 4 Oct 2019 21:35:25 +0530 Message-Id: <20191004160525.16716-3-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191004160525.16716-1-manivannan.sadhasivam@linaro.org> References: <20191004160525.16716-1-manivannan.sadhasivam@linaro.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add driver for Sony IMX290 CMOS image sensor driver. The driver only supports I2C interface for programming and MIPI CSI-2 for sensor output. Signed-off-by: Manivannan Sadhasivam --- drivers/media/i2c/Kconfig | 11 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/imx290.c | 881 +++++++++++++++++++++++++++++++++++++ 3 files changed, 893 insertions(+) create mode 100644 drivers/media/i2c/imx290.c diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 79ce9ec6fc1b..cd02ad227d35 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -595,6 +595,17 @@ config VIDEO_IMX274 This is a V4L2 sensor driver for the Sony IMX274 CMOS image sensor. +config VIDEO_IMX290 + tristate "Sony IMX290 sensor support" + depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API + select V4L2_FWNODE + help + This is a Video4Linux2 sensor driver for the Sony + IMX290 camera sensor. + + To compile this driver as a module, choose M here: the + module will be called imx290. + config VIDEO_IMX319 tristate "Sony IMX319 sensor support" depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index fd4ea86dedd5..04411ddb4922 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -111,6 +111,7 @@ obj-$(CONFIG_VIDEO_TC358743) += tc358743.o obj-$(CONFIG_VIDEO_IMX214) += imx214.o obj-$(CONFIG_VIDEO_IMX258) += imx258.o obj-$(CONFIG_VIDEO_IMX274) += imx274.o +obj-$(CONFIG_VIDEO_IMX290) += imx290.o obj-$(CONFIG_VIDEO_IMX319) += imx319.o obj-$(CONFIG_VIDEO_IMX355) += imx355.o obj-$(CONFIG_VIDEO_ST_MIPID02) += st-mipid02.o diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c new file mode 100644 index 000000000000..7be40e4e6c85 --- /dev/null +++ b/drivers/media/i2c/imx290.c @@ -0,0 +1,881 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Sony IMX290 CMOS Image Sensor Driver + * + * Copyright (C) 2019 FRAMOS GmbH. + * + * Copyright (C) 2019 Linaro Ltd. + * Author: Manivannan Sadhasivam + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define IMX290_STANDBY 0x3000 +#define IMX290_REGHOLD 0x3001 +#define IMX290_XMSTA 0x3002 +#define IMX290_GAIN 0x3014 + +#define IMX290_DEFAULT_LINK_FREQ 445500000 + +static const char * const imx290_supply_name[] = { + "vdda", + "vddd", + "vdddo", +}; + +#define IMX290_NUM_SUPPLIES ARRAY_SIZE(imx290_supply_name) + +struct imx290_regval { + u16 reg; + u8 val; +}; + +struct imx290_mode { + u32 width; + u32 height; + u32 pixel_rate; + u32 link_freq_index; + + const struct imx290_regval *data; + u32 data_size; +}; + +struct imx290 { + struct device *dev; + struct clk *xclk; + struct regmap *regmap; + + struct v4l2_subdev sd; + struct v4l2_fwnode_endpoint ep; + struct media_pad pad; + struct v4l2_mbus_framefmt current_format; + const struct imx290_mode *current_mode; + + struct regulator_bulk_data supplies[IMX290_NUM_SUPPLIES]; + struct gpio_desc *rst_gpio; + + struct v4l2_ctrl_handler ctrls; + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *pixel_rate; + + struct mutex lock; +}; + +struct imx290_pixfmt { + u32 code; +}; + +static const struct imx290_pixfmt imx290_formats[] = { + { MEDIA_BUS_FMT_SRGGB10_1X10 }, +}; + +static const struct regmap_config imx290_regmap_config = { + .reg_bits = 16, + .val_bits = 8, + .cache_type = REGCACHE_RBTREE, +}; + +static const struct imx290_regval imx290_global_init_settings[] = { + { 0x3007, 0x00 }, + { 0x3009, 0x00 }, + { 0x3018, 0x65 }, + { 0x3019, 0x04 }, + { 0x301a, 0x00 }, + { 0x3443, 0x03 }, + { 0x3444, 0x20 }, + { 0x3445, 0x25 }, + { 0x3407, 0x03 }, + { 0x303a, 0x0c }, + { 0x3040, 0x00 }, + { 0x3041, 0x00 }, + { 0x303c, 0x00 }, + { 0x303d, 0x00 }, + { 0x3042, 0x9c }, + { 0x3043, 0x07 }, + { 0x303e, 0x49 }, + { 0x303f, 0x04 }, + { 0x304b, 0x0a }, + { 0x300f, 0x00 }, + { 0x3010, 0x21 }, + { 0x3012, 0x64 }, + { 0x3016, 0x09 }, + { 0x3070, 0x02 }, + { 0x3071, 0x11 }, + { 0x309b, 0x10 }, + { 0x309c, 0x22 }, + { 0x30a2, 0x02 }, + { 0x30a6, 0x20 }, + { 0x30a8, 0x20 }, + { 0x30aa, 0x20 }, + { 0x30ac, 0x20 }, + { 0x30b0, 0x43 }, + { 0x3119, 0x9e }, + { 0x311c, 0x1e }, + { 0x311e, 0x08 }, + { 0x3128, 0x05 }, + { 0x313d, 0x83 }, + { 0x3150, 0x03 }, + { 0x317e, 0x00 }, + { 0x32b8, 0x50 }, + { 0x32b9, 0x10 }, + { 0x32ba, 0x00 }, + { 0x32bb, 0x04 }, + { 0x32c8, 0x50 }, + { 0x32c9, 0x10 }, + { 0x32ca, 0x00 }, + { 0x32cb, 0x04 }, + { 0x332c, 0xd3 }, + { 0x332d, 0x10 }, + { 0x332e, 0x0d }, + { 0x3358, 0x06 }, + { 0x3359, 0xe1 }, + { 0x335a, 0x11 }, + { 0x3360, 0x1e }, + { 0x3361, 0x61 }, + { 0x3362, 0x10 }, + { 0x33b0, 0x50 }, + { 0x33b2, 0x1a }, + { 0x33b3, 0x04 }, +}; + +static const struct imx290_regval imx290_1080p_settings[] = { + /* mode settings */ + { 0x3007, 0x00 }, + { 0x303a, 0x0c }, + { 0x3414, 0x0a }, + { 0x3472, 0x80 }, + { 0x3473, 0x07 }, + { 0x3418, 0x38 }, + { 0x3419, 0x04 }, + { 0x3012, 0x64 }, + { 0x3013, 0x00 }, + { 0x305c, 0x18 }, + { 0x305d, 0x03 }, + { 0x305e, 0x20 }, + { 0x305f, 0x01 }, + { 0x315e, 0x1a }, + { 0x3164, 0x1a }, + { 0x3480, 0x49 }, + /* data rate settings */ + { 0x3009, 0x01 }, + { 0x3405, 0x10 }, + { 0x3446, 0x57 }, + { 0x3447, 0x00 }, + { 0x3448, 0x37 }, + { 0x3449, 0x00 }, + { 0x344a, 0x1f }, + { 0x344b, 0x00 }, + { 0x344c, 0x1f }, + { 0x344d, 0x00 }, + { 0x344e, 0x1f }, + { 0x344f, 0x00 }, + { 0x3450, 0x77 }, + { 0x3451, 0x00 }, + { 0x3452, 0x1f }, + { 0x3453, 0x00 }, + { 0x3454, 0x17 }, + { 0x3455, 0x00 }, + { 0x301c, 0x98 }, + { 0x301d, 0x08 }, +}; + +static const struct imx290_regval imx290_720p_settings[] = { + /* mode settings */ + { 0x3007, 0x10 }, + { 0x303a, 0x06 }, + { 0x3414, 0x04 }, + { 0x3472, 0x00 }, + { 0x3473, 0x05 }, + { 0x3418, 0xd0 }, + { 0x3419, 0x02 }, + { 0x3012, 0x64 }, + { 0x3013, 0x00 }, + { 0x305c, 0x20 }, + { 0x305d, 0x00 }, + { 0x305e, 0x20 }, + { 0x305f, 0x01 }, + { 0x315e, 0x1a }, + { 0x3164, 0x1a }, + { 0x3480, 0x49 }, + /* data rate settings */ + { 0x3009, 0x01 }, + { 0x3405, 0x10 }, + { 0x3446, 0x4f }, + { 0x3447, 0x00 }, + { 0x3448, 0x2f }, + { 0x3449, 0x00 }, + { 0x344a, 0x17 }, + { 0x344b, 0x00 }, + { 0x344c, 0x17 }, + { 0x344d, 0x00 }, + { 0x344e, 0x17 }, + { 0x344f, 0x00 }, + { 0x3450, 0x57 }, + { 0x3451, 0x00 }, + { 0x3452, 0x17 }, + { 0x3453, 0x00 }, + { 0x3454, 0x17 }, + { 0x3455, 0x00 }, + { 0x301c, 0xe4 }, + { 0x301d, 0x0c }, +}; + +static const struct imx290_regval imx290_10bit_settings[] = { + { 0x3005, 0x00}, + { 0x3046, 0x00}, + { 0x3129, 0x1d}, + { 0x317c, 0x12}, + { 0x31ec, 0x37}, + { 0x3441, 0x0a}, + { 0x3442, 0x0a}, + { 0x300a, 0x3c}, + { 0x300b, 0x00}, +}; + +/* supported link frequencies */ +static const s64 imx290_link_freq[] = { + IMX290_DEFAULT_LINK_FREQ, +}; + +/* Mode configs */ +static const struct imx290_mode imx290_modes[] = { + { + .width = 1920, + .height = 1080, + .data = imx290_1080p_settings, + .data_size = ARRAY_SIZE(imx290_1080p_settings), + .pixel_rate = 178200000, + .link_freq_index = 0, + }, + { + .width = 1280, + .height = 720, + .data = imx290_720p_settings, + .data_size = ARRAY_SIZE(imx290_720p_settings), + .pixel_rate = 178200000, + .link_freq_index = 0, + }, +}; + +static inline struct imx290 *to_imx290(struct v4l2_subdev *_sd) +{ + return container_of(_sd, struct imx290, sd); +} + +static inline int imx290_read_reg(struct imx290 *imx290, u16 addr, u8 *value) +{ + unsigned int regval; + int ret; + + ret = regmap_read(imx290->regmap, addr, ®val); + if (ret) { + dev_err(imx290->dev, "I2C read failed for addr: %x\n", addr); + return ret; + } + + *value = regval & 0xff; + + return 0; +} + +static int imx290_write_reg(struct imx290 *imx290, u16 addr, u8 value) +{ + int ret; + + ret = regmap_write(imx290->regmap, addr, value); + if (ret) { + dev_err(imx290->dev, "I2C write failed for addr: %x\n", addr); + return ret; + } + + return ret; +} + +static int imx290_set_register_array(struct imx290 *imx290, + const struct imx290_regval *settings, + unsigned int num_settings) +{ + unsigned int i; + int ret; + + for (i = 0; i < num_settings; ++i, ++settings) { + ret = imx290_write_reg(imx290, settings->reg, settings->val); + if (ret < 0) + return ret; + + /* Settle time is 10ms for all registers */ + msleep(10); + } + + return 0; +} + +static int imx290_write_buffered_reg(struct imx290 *imx290, u16 address_low, + u8 nr_regs, u32 value) +{ + unsigned int i; + int ret; + + ret = imx290_write_reg(imx290, IMX290_REGHOLD, 0x01); + if (ret) { + dev_err(imx290->dev, "Error setting hold register\n"); + return ret; + } + + for (i = 0; i < nr_regs; i++) { + ret = imx290_write_reg(imx290, address_low + i, + (u8)(value >> (i * 8))); + if (ret) { + dev_err(imx290->dev, "Error writing buffered registers\n"); + return ret; + } + } + + ret = imx290_write_reg(imx290, IMX290_REGHOLD, 0x00); + if (ret) { + dev_err(imx290->dev, "Error setting hold register\n"); + return ret; + } + + return ret; +} + +static int imx290_set_gain(struct imx290 *imx290, u32 value) +{ + int ret; + + ret = imx290_write_buffered_reg(imx290, IMX290_GAIN, 1, value); + if (ret) + dev_err(imx290->dev, "Unable to write gain\n"); + + return ret; +} + +/* Stop streaming */ +static int imx290_stop_streaming(struct imx290 *imx290) +{ + int ret; + + ret = imx290_write_reg(imx290, IMX290_STANDBY, 0x01); + if (ret < 0) + return ret; + + msleep(30); + + return imx290_write_reg(imx290, IMX290_XMSTA, 0x01); +} + +static int imx290_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct imx290 *imx290 = container_of(ctrl->handler, + struct imx290, ctrls); + int ret = 0; + + /* V4L2 controls values will be applied only when power is already up */ + if (!pm_runtime_get_if_in_use(imx290->dev)) + return 0; + + switch (ctrl->id) { + case V4L2_CID_GAIN: + ret = imx290_set_gain(imx290, ctrl->val); + break; + default: + ret = -EINVAL; + break; + } + + pm_runtime_put(imx290->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops imx290_ctrl_ops = { + .s_ctrl = imx290_set_ctrl, +}; + +static int imx290_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->index >= ARRAY_SIZE(imx290_formats)) + return -EINVAL; + + code->code = imx290_formats[code->index].code; + + return 0; +} + +static int imx290_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct imx290 *imx290 = to_imx290(sd); + struct v4l2_mbus_framefmt *framefmt; + + mutex_lock(&imx290->lock); + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) + framefmt = v4l2_subdev_get_try_format(&imx290->sd, cfg, + fmt->pad); + else + framefmt = &imx290->current_format; + + fmt->format = *framefmt; + + mutex_unlock(&imx290->lock); + + return 0; +} + +static int imx290_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct imx290 *imx290 = to_imx290(sd); + const struct imx290_mode *mode; + struct v4l2_mbus_framefmt *format; + unsigned int i; + + mutex_lock(&imx290->lock); + + mode = v4l2_find_nearest_size(imx290_modes, + ARRAY_SIZE(imx290_modes), + width, height, + fmt->format.width, fmt->format.height); + + fmt->format.width = mode->width; + fmt->format.height = mode->height; + + for (i = 0; i < ARRAY_SIZE(imx290_formats); i++) + if (imx290_formats[i].code == fmt->format.code) + break; + + if (i >= ARRAY_SIZE(imx290_formats)) + i = 0; + + fmt->format.code = imx290_formats[i].code; + fmt->format.field = V4L2_FIELD_NONE; + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + format = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); + } else { + format = &imx290->current_format; + __v4l2_ctrl_s_ctrl(imx290->link_freq, mode->link_freq_index); + __v4l2_ctrl_s_ctrl_int64(imx290->pixel_rate, mode->pixel_rate); + + imx290->current_mode = mode; + } + + *format = fmt->format; + + mutex_unlock(&imx290->lock); + + return 0; +} + +static int imx290_entity_init_cfg(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg) +{ + struct v4l2_subdev_format fmt = { 0 }; + + fmt.which = cfg ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; + fmt.format.width = 1920; + fmt.format.height = 1080; + + imx290_set_fmt(subdev, cfg, &fmt); + + return 0; +} + +static int imx290_write_current_format(struct imx290 *imx290, + struct v4l2_mbus_framefmt *format) +{ + int ret; + + switch (format->code) { + case MEDIA_BUS_FMT_SRGGB10_1X10: + ret = imx290_set_register_array(imx290, imx290_10bit_settings, + ARRAY_SIZE(imx290_10bit_settings)); + if (ret < 0) { + dev_err(imx290->dev, "Could not set format registers\n"); + return ret; + } + break; + default: + dev_err(imx290->dev, "Unknown pixel format\n"); + return -EINVAL; + } + + return 0; +} + +/* Start streaming */ +static int imx290_start_streaming(struct imx290 *imx290) +{ + int ret; + + /* Set init register settings */ + ret = imx290_set_register_array(imx290, imx290_global_init_settings, + ARRAY_SIZE(imx290_global_init_settings)); + if (ret < 0) { + dev_err(imx290->dev, "Could not set init registers\n"); + return ret; + } + + /* Set current frame format */ + ret = imx290_write_current_format(imx290, &imx290->current_format); + if (ret < 0) { + dev_err(imx290->dev, "Could not set frame format\n"); + return ret; + } + + /* Apply default values of current mode */ + ret = imx290_set_register_array(imx290, imx290->current_mode->data, + imx290->current_mode->data_size); + if (ret < 0) { + dev_err(imx290->dev, "Could not set current mode\n"); + return ret; + } + + /* Apply customized values from user */ + ret = v4l2_ctrl_handler_setup(imx290->sd.ctrl_handler); + if (ret) { + dev_err(imx290->dev, "Could not sync v4l2 controls\n"); + return ret; + } + + ret = imx290_write_reg(imx290, IMX290_STANDBY, 0x00); + if (ret < 0) + return ret; + + msleep(30); + + /* Start streaming */ + return imx290_write_reg(imx290, IMX290_XMSTA, 0x00); +} + +static int imx290_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct imx290 *imx290 = to_imx290(sd); + int ret = 0; + + if (enable) { + ret = pm_runtime_get_sync(imx290->dev); + if (ret < 0) { + pm_runtime_put_noidle(imx290->dev); + goto unlock_and_return; + } + + ret = imx290_start_streaming(imx290); + if (ret) { + dev_err(imx290->dev, "Start stream failed\n"); + pm_runtime_put(imx290->dev); + goto unlock_and_return; + } + } else { + imx290_stop_streaming(imx290); + pm_runtime_put(imx290->dev); + } + +unlock_and_return: + + return ret; +} + +static int imx290_get_regulators(struct device *dev, struct imx290 *imx290) +{ + unsigned int i; + + for (i = 0; i < IMX290_NUM_SUPPLIES; i++) + imx290->supplies[i].supply = imx290_supply_name[i]; + + return devm_regulator_bulk_get(dev, IMX290_NUM_SUPPLIES, + imx290->supplies); +} + +static int imx290_power_on(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx290 *imx290 = to_imx290(sd); + int ret; + + ret = clk_prepare_enable(imx290->xclk); + if (ret) { + dev_err(imx290->dev, "Failed to enable clock\n"); + return ret; + } + + ret = regulator_bulk_enable(IMX290_NUM_SUPPLIES, imx290->supplies); + if (ret) { + dev_err(imx290->dev, "Failed to enable regulators\n"); + clk_disable_unprepare(imx290->xclk); + return ret; + } + + usleep_range(1, 2); + gpiod_set_value_cansleep(imx290->rst_gpio, 1); + usleep_range(30000, 31000); + + return 0; +} + +static int imx290_power_off(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx290 *imx290 = to_imx290(sd); + + clk_disable_unprepare(imx290->xclk); + gpiod_set_value_cansleep(imx290->rst_gpio, 0); + regulator_bulk_disable(IMX290_NUM_SUPPLIES, imx290->supplies); + + return 0; +} + +static const struct dev_pm_ops imx290_pm_ops = { + SET_RUNTIME_PM_OPS(imx290_power_on, imx290_power_off, NULL) +}; + +static const struct v4l2_subdev_video_ops imx290_video_ops = { + .s_stream = imx290_set_stream, +}; + +static const struct v4l2_subdev_pad_ops imx290_pad_ops = { + .init_cfg = imx290_entity_init_cfg, + .enum_mbus_code = imx290_enum_mbus_code, + .get_fmt = imx290_get_fmt, + .set_fmt = imx290_set_fmt, +}; + +static const struct v4l2_subdev_ops imx290_subdev_ops = { + .video = &imx290_video_ops, + .pad = &imx290_pad_ops, +}; + +static const struct media_entity_operations imx290_subdev_entity_ops = { + .link_validate = v4l2_subdev_link_validate, +}; + +static int imx290_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct fwnode_handle *endpoint; + struct imx290 *imx290; + u32 xclk_freq; + int ret; + + imx290 = devm_kzalloc(dev, sizeof(*imx290), GFP_KERNEL); + if (!imx290) + return -ENOMEM; + + imx290->dev = dev; + imx290->regmap = devm_regmap_init_i2c(client, &imx290_regmap_config); + if (IS_ERR(imx290->regmap)) { + dev_err(dev, "Unable to initialize I2C\n"); + return -ENODEV; + } + + endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL); + if (!endpoint) { + dev_err(dev, "Endpoint node not found\n"); + return -EINVAL; + } + + ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &imx290->ep); + fwnode_handle_put(endpoint); + if (ret) { + dev_err(dev, "Parsing endpoint node failed\n"); + goto free_err; + } + + if (!imx290->ep.nr_of_link_frequencies) { + dev_err(dev, "link-frequency property not found in DT\n"); + ret = -EINVAL; + goto free_err; + } + + if (imx290->ep.link_frequencies[0] != IMX290_DEFAULT_LINK_FREQ) { + dev_err(dev, "Unsupported link frequency\n"); + ret = -EINVAL; + goto free_err; + } + + /* Only CSI2 is supported for now */ + if (imx290->ep.bus_type != V4L2_MBUS_CSI2_DPHY) { + dev_err(dev, "Unsupported bus type, should be CSI2\n"); + ret = -EINVAL; + goto free_err; + } + + /* Set default mode to max resolution */ + imx290->current_mode = &imx290_modes[0]; + + /* get system clock (xclk) */ + imx290->xclk = devm_clk_get(dev, "xclk"); + if (IS_ERR(imx290->xclk)) { + dev_err(dev, "Could not get xclk"); + ret = PTR_ERR(imx290->xclk); + goto free_err; + } + + ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency", + &xclk_freq); + if (ret) { + dev_err(dev, "Could not get xclk frequency\n"); + goto free_err; + } + + /* external clock must be 37.125 MHz */ + if (xclk_freq != 37125000) { + dev_err(dev, "External clock frequency %u is not supported\n", + xclk_freq); + ret = -EINVAL; + goto free_err; + } + + ret = clk_set_rate(imx290->xclk, xclk_freq); + if (ret) { + dev_err(dev, "Could not set xclk frequency\n"); + goto free_err; + } + + ret = imx290_get_regulators(dev, imx290); + if (ret < 0) { + dev_err(dev, "Cannot get regulators\n"); + goto free_err; + } + + imx290->rst_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_ASIS); + if (IS_ERR(imx290->rst_gpio)) { + dev_err(dev, "Cannot get reset gpio\n"); + ret = PTR_ERR(imx290->rst_gpio); + goto free_err; + } + + mutex_init(&imx290->lock); + + v4l2_ctrl_handler_init(&imx290->ctrls, 3); + + v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, + V4L2_CID_GAIN, 0, 72, 1, 0); + imx290->link_freq = v4l2_ctrl_new_int_menu(&imx290->ctrls, + &imx290_ctrl_ops, + V4L2_CID_LINK_FREQ, + ARRAY_SIZE(imx290_link_freq) - 1, + 0, imx290_link_freq); + if (imx290->link_freq) + imx290->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + imx290->pixel_rate = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, + V4L2_CID_PIXEL_RATE, 1, + INT_MAX, 1, + imx290_modes[0].pixel_rate); + + imx290->sd.ctrl_handler = &imx290->ctrls; + + if (imx290->ctrls.error) { + dev_err(dev, "Control initialization error %d\n", + imx290->ctrls.error); + ret = imx290->ctrls.error; + goto free_ctrl; + } + + v4l2_i2c_subdev_init(&imx290->sd, client, &imx290_subdev_ops); + imx290->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + imx290->sd.dev = &client->dev; + imx290->sd.entity.ops = &imx290_subdev_entity_ops; + imx290->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + + imx290->pad.flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_pads_init(&imx290->sd.entity, 1, &imx290->pad); + if (ret < 0) { + dev_err(dev, "Could not register media entity\n"); + goto free_ctrl; + } + + ret = v4l2_async_register_subdev(&imx290->sd); + if (ret < 0) { + dev_err(dev, "Could not register v4l2 device\n"); + goto free_entity; + } + + /* Power on the device to match runtime PM state below */ + ret = imx290_power_on(dev); + if (ret < 0) { + dev_err(dev, "Could not power on the device\n"); + goto free_entity; + } + + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + pm_runtime_idle(dev); + + v4l2_fwnode_endpoint_free(&imx290->ep); + + return 0; + +free_entity: + media_entity_cleanup(&imx290->sd.entity); +free_ctrl: + v4l2_ctrl_handler_free(&imx290->ctrls); + mutex_destroy(&imx290->lock); +free_err: + v4l2_fwnode_endpoint_free(&imx290->ep); + + return ret; +} + +static int imx290_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx290 *imx290 = to_imx290(sd); + + v4l2_async_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); + v4l2_ctrl_handler_free(sd->ctrl_handler); + + mutex_destroy(&imx290->lock); + + pm_runtime_disable(imx290->dev); + if (!pm_runtime_status_suspended(imx290->dev)) + imx290_power_off(imx290->dev); + pm_runtime_set_suspended(imx290->dev); + + return 0; +} + +static const struct of_device_id imx290_of_match[] = { + { .compatible = "sony,imx290" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx290_of_match); + +static struct i2c_driver imx290_i2c_driver = { + .probe_new = imx290_probe, + .remove = imx290_remove, + .driver = { + .name = "imx290", + .pm = &imx290_pm_ops, + .of_match_table = of_match_ptr(imx290_of_match), + }, +}; + +module_i2c_driver(imx290_i2c_driver); + +MODULE_DESCRIPTION("Sony IMX290 CMOS Image Sensor Driver"); +MODULE_AUTHOR("FRAMOS GmbH"); +MODULE_AUTHOR("Manivannan Sadhasivam "); +MODULE_LICENSE("GPL v2");