From patchwork Thu May 23 10:22:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dongchun Zhu X-Patchwork-Id: 10957217 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 374F8933 for ; Thu, 23 May 2019 10:22:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 19D9928451 for ; Thu, 23 May 2019 10:22:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0E05728450; Thu, 23 May 2019 10:22:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6897928455 for ; Thu, 23 May 2019 10:22:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727466AbfEWKWY (ORCPT ); Thu, 23 May 2019 06:22:24 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:32507 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1730028AbfEWKWX (ORCPT ); Thu, 23 May 2019 06:22:23 -0400 X-UUID: 333b8d192a52440da86c2502cd96de87-20190523 X-UUID: 333b8d192a52440da86c2502cd96de87-20190523 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 2106174787; Thu, 23 May 2019 18:22:15 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs03n1.mediatek.inc (172.21.101.181) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 23 May 2019 18:22:13 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 23 May 2019 18:22:12 +0800 From: To: , , , , CC: , , , , , , , , , Subject: [PATCH 1/3] media: i2c: ov02a10: Add ov02a10 camera sensor driver Date: Thu, 23 May 2019 18:22:02 +0800 Message-ID: <20190523102204.24112-2-dongchun.zhu@mediatek.com> X-Mailer: git-send-email 2.9.2 In-Reply-To: <20190523102204.24112-1-dongchun.zhu@mediatek.com> References: <20190523102204.24112-1-dongchun.zhu@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Dongchun Zhu Add a V4L2 sub-device driver for the OmniVision image sensor. This is a camera sensor using the I2C bus for control and the CSI-2 bus for data. Signed-off-by: Dongchun Zhu --- drivers/media/i2c/Makefile | 1 + drivers/media/i2c/ov02a10.c | 1067 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 1068 insertions(+) create mode 100644 drivers/media/i2c/ov02a10.c diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index d8ad9da..4b8f67b 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -63,6 +63,7 @@ obj-$(CONFIG_VIDEO_VP27SMPX) += vp27smpx.o obj-$(CONFIG_VIDEO_SONY_BTF_MPX) += sony-btf-mpx.o obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o +obj-$(CONFIG_VIDEO_OV02A10) += ov02a10.o obj-$(CONFIG_VIDEO_OV2640) += ov2640.o obj-$(CONFIG_VIDEO_OV2680) += ov2680.o obj-$(CONFIG_VIDEO_OV2685) += ov2685.o diff --git a/drivers/media/i2c/ov02a10.c b/drivers/media/i2c/ov02a10.c new file mode 100644 index 0000000..39472ff --- /dev/null +++ b/drivers/media/i2c/ov02a10.c @@ -0,0 +1,1067 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * A V4L2 driver for OmniVision OV02A10 cameras. + * + * Based on Omnivision OV02A10 Camera Driver + * Copyright (C) 2019 MediaTek Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed .as is. WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define CHIP_ID 0x2509 +#define OV02A10_REG_CHIP_ID_H 0x02 +#define OV02A10_REG_CHIP_ID_L 0x03 +#define OV02A10_ID(_msb, _lsb) ((_msb) << 8 | (_lsb)) + +/* bit[1] vertical upside down */ +/* bit[0] horizontal mirror */ +#define OV02A10_REG_UPDOWN_MIRROR 0x3F + +/* enable mirror & flip global effective */ +#define OV02A10_REG_UPDOWN_MIRROR_ENABLE 0x01 + +#define ov02a10_XVCLK_FREQ 24000000 +#define REG_SC_CTRL_MODE 0xac + +#define SC_CTRL_MODE_STANDBY 0x00 +#define SC_CTRL_MODE_STREAMING 0x01 + +#define ov02a10_REG_EXPOSURE_H 0x03 +#define ov02a10_REG_EXPOSURE_L 0x04 +#define ov02a10_EXPOSURE_MIN 4 +#define ov02a10_EXPOSURE_STEP 1 + +#define ov02a10_REG_VTS_H 0x05 +#define ov02a10_REG_VTS_L 0x06 +#define ov02a10_VTS_MAX 0x209f +#define ov02a10_VTS_MIN 0x04cf + +#define ov02a10_REG_GAIN 0x24 +#define ov02a10_GAIN_MIN 0x10 +#define ov02a10_GAIN_MAX 0xf8 +#define ov02a10_GAIN_STEP 0x01 +#define ov02a10_GAIN_DEFAULT 0x40 + +#define ov02a10_REG_TEST_PATTERN 0x0d +#define ov02a10_TEST_PATTERN_DISABLED 0x00 +#define ov02a10_TEST_PATTERN_COLOR_BAR 0x01 + +#define REG_NULL 0xFF + +#define ov02a10_LANES 1 +#define ov02a10_BITS_PER_SAMPLE 10 + +static const char * const ov02a10_supply_names[] = { + "avdd", /* Analog power */ + "dovdd", /* Digital I/O power */ + "dvdd", /* Digital core power */ +}; + +#define ov02a10_NUM_SUPPLIES ARRAY_SIZE(ov02a10_supply_names) + +struct regval { + u16 addr; + u8 val; +}; + +struct ov02a10_mode { + u32 width; + u32 height; + u32 exp_def; + u32 hts_def; + u32 vts_def; + const struct regval *reg_list; +}; + +struct ov02a10 { + struct i2c_client *client; + struct clk *xvclk; + struct gpio_desc *pwdn_gpio; + struct gpio_desc *reset_gpio; + struct regulator_bulk_data supplies[ov02a10_NUM_SUPPLIES]; + + bool streaming; + bool upside_down; + + /* + * Serialize control access, get/set format, get selection + * and start streaming. + */ + struct mutex mutex; + struct v4l2_subdev subdev; + struct media_pad pad; + struct v4l2_ctrl *anal_gain; + struct v4l2_ctrl *exposure; + struct v4l2_ctrl *hblank; + struct v4l2_ctrl *vblank; + struct v4l2_ctrl *test_pattern; + struct v4l2_ctrl_handler ctrl_handler; + + const struct ov02a10_mode *cur_mode; +}; + +#define to_ov02a10(sd) container_of(sd, struct ov02a10, subdev) + +/* test pattern output */ +static struct regval ov02a10_test_pattern_regs[] = { + {0xfd, 0x01}, + {0x0d, 0x00}, + {0xb6, 0x01}, + {0x01, 0x01}, + {0xfd, 0x01}, + {0xac, 0x01}, + {REG_NULL, 0x00} +}; + +/* + * Xclk 24Mhz + * Pclk 39Mhz + * linelength 934(0x3a6) + * framelength 1390(0x56E) + * grabwindow_width 1600 + * grabwindow_height 1200 + * max_framerate 30fps + * mipi_datarate per lane 780Mbps + */ +static struct regval ov02a10_1600x1200_regs[] = { + {0xfd, 0x01}, + {0xac, 0x00}, + {0xfd, 0x00}, + {0x2f, 0x29}, + {0x34, 0x00}, + {0x35, 0x21}, + {0x30, 0x15}, + {0x33, 0x01}, + {0xfd, 0x01}, + {0x44, 0x00}, + {0x2a, 0x4c}, + {0x2b, 0x1e}, + {0x2c, 0x60}, + {0x25, 0x11}, + {0x03, 0x01}, + {0x04, 0xae}, + {0x09, 0x00}, + {0x0a, 0x02}, + {0x06, 0xa6}, + {0x31, 0x00}, + {0x24, 0x40}, + {0x01, 0x01}, + {0xfb, 0x73}, + {0xfd, 0x01}, + {0x16, 0x04}, + {0x1c, 0x09}, + {0x21, 0x42}, + {0x12, 0x04}, + {0x13, 0x10}, + {0x11, 0x40}, + {0x33, 0x81}, + {0xd0, 0x00}, + {0xd1, 0x01}, + {0xd2, 0x00}, + {0x50, 0x10}, + {0x51, 0x23}, + {0x52, 0x20}, + {0x53, 0x10}, + {0x54, 0x02}, + {0x55, 0x20}, + {0x56, 0x02}, + {0x58, 0x48}, + {0x5d, 0x15}, + {0x5e, 0x05}, + {0x66, 0x66}, + {0x68, 0x68}, + {0x6b, 0x00}, + {0x6c, 0x00}, + {0x6f, 0x40}, + {0x70, 0x40}, + {0x71, 0x0a}, + {0x72, 0xf0}, + {0x73, 0x10}, + {0x75, 0x80}, + {0x76, 0x10}, + {0x84, 0x00}, + {0x85, 0x10}, + {0x86, 0x10}, + {0x87, 0x00}, + {0x8a, 0x22}, + {0x8b, 0x22}, + {0x19, 0xf1}, + {0x29, 0x01}, + {0xfd, 0x01}, + {0x9d, 0x96}, + {0xa0, 0x29}, + {0xa1, 0x05}, + {0xad, 0x62}, + {0xae, 0x00}, + {0xaf, 0x85}, + {0xb1, 0x01}, + {0x8e, 0x06}, + {0x8f, 0x40}, + {0x90, 0x04}, + {0x91, 0xb0}, + {0x45, 0x01}, + {0x46, 0x00}, + {0x47, 0x6c}, + {0x48, 0x03}, + {0x49, 0x8b}, + {0x4a, 0x00}, + {0x4b, 0x07}, + {0x4c, 0x04}, + {0x4d, 0xb7}, + {0xf0, 0x40}, + {0xf1, 0x40}, + {0xf2, 0x40}, + {0xf3, 0x40}, + {0x3f, 0x00}, + {0xfd, 0x01}, + {0x05, 0x00}, + {0x06, 0xa6}, + {0xfd, 0x01}, + {REG_NULL, 0x00} +}; + +#define ov02a10_LINK_FREQ_390MHZ 390000000 +static const s64 link_freq_menu_items[] = { + ov02a10_LINK_FREQ_390MHZ +}; + +static const char * const ov02a10_test_pattern_menu[] = { + "Disabled", + "Color Bar", +}; + +static const int ov02a10_test_pattern_val[] = { + ov02a10_TEST_PATTERN_DISABLED, + ov02a10_TEST_PATTERN_COLOR_BAR, +}; + +static const struct ov02a10_mode supported_modes[] = { + { + .width = 1600, + .height = 1200, + .exp_def = 0x01ae, + .hts_def = 0x03a6, + .vts_def = 0x056e, + .reg_list = ov02a10_1600x1200_regs, + }, +}; + +/* write a register */ +static int ov02a10_write_reg(struct i2c_client *client, u8 addr, u8 val) +{ + u8 buf[2] = { addr, val }; + + int ret = i2c_master_send(client, buf, 2); + + if (ret < 0) { + dev_err(&client->dev, "%s: error: reg=%x, val=%x\n", + __func__, addr, val); + return ret; + } + + return ret == 2 ? 0 : ret; +} + +static int ov02a10_write_array(struct i2c_client *client, + const struct regval *regs) +{ + int ret = 0; + u32 i; + + for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) { + ret = ov02a10_write_reg(client, regs[i].addr, regs[i].val); + if (ret < 0) + return ret; + } + + return 0; +} + +/* read a register */ +static int ov02a10_read_reg(struct i2c_client *client, u8 reg, u8 *val) +{ + int ret; + u8 data = reg; + struct i2c_msg msg = { + .addr = client->addr, + .flags = 0, + .len = 1, + .buf = &data, + }; + + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret < 0) { + dev_err(&client->dev, "i2c_transfer failed, ret %d\n", ret); + goto err; + } + + msg.flags = I2C_M_RD; + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret < 0) { + dev_err(&client->dev, "i2c_transfer --I2C_M_RD failed, \ + ret %d\n", ret); + goto err; + } + + *val = data; + return 0; + +err: + dev_err(&client->dev, "Failed reading register 0x%02x!\n", reg); + return ret; +} + +static void ov02a10_fill_fmt(const struct ov02a10_mode *mode, + struct v4l2_mbus_framefmt *fmt) +{ + fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; + fmt->width = mode->width; + fmt->height = mode->height; + fmt->field = V4L2_FIELD_NONE; +} + +static int ov02a10_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct ov02a10 *ov02a10 = to_ov02a10(sd); + struct v4l2_mbus_framefmt *mbus_fmt = &fmt->format; + + /* only one mode supported for now */ + ov02a10_fill_fmt(ov02a10->cur_mode, mbus_fmt); + + return 0; +} + +static int ov02a10_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct ov02a10 *ov02a10 = to_ov02a10(sd); + struct v4l2_mbus_framefmt *mbus_fmt = &fmt->format; + + ov02a10_fill_fmt(ov02a10->cur_mode, mbus_fmt); + + return 0; +} + +static int ov02a10_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(supported_modes)) + return -EINVAL; + + code->code = MEDIA_BUS_FMT_SBGGR10_1X10; + + return 0; +} + +static int ov02a10_enum_frame_sizes(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_size_enum *fse) +{ + int index = fse->index; + + if (index >= ARRAY_SIZE(supported_modes)) + return -EINVAL; + + fse->code = MEDIA_BUS_FMT_SBGGR10_1X10; + + fse->min_width = supported_modes[index].width; + fse->max_width = supported_modes[index].width; + fse->max_height = supported_modes[index].height; + fse->min_height = supported_modes[index].height; + + return 0; +} + +static int __ov02a10_power_on(struct ov02a10 *ov02a10) +{ + int ret; + + struct device *dev = &ov02a10->client->dev; + + ret = clk_prepare_enable(ov02a10->xvclk); + if (ret < 0) { + dev_err(dev, "Failed to enable xvclk\n"); + return ret; + } + + /* note: set 0 is high, set 1 is low */ + gpiod_set_value_cansleep(ov02a10->reset_gpio, 1); + gpiod_set_value_cansleep(ov02a10->pwdn_gpio, 0); + + ret = regulator_bulk_enable(ov02a10_NUM_SUPPLIES, ov02a10->supplies); + if (ret < 0) { + dev_err(dev, "Failed to enable regulators\n"); + goto disable_clk; + } + usleep_range(7 * 1000, 8 * 1000); + + gpiod_set_value_cansleep(ov02a10->pwdn_gpio, 1); + usleep_range(10 * 1000, 12 * 1000); + + gpiod_set_value_cansleep(ov02a10->reset_gpio, 0); + usleep_range(10 * 1000, 12 * 1000); + +#ifdef SENSOR_HARDWARE_RESET + /* sensor hardware reset */ + gpiod_set_value_cansleep(ov02a10->reset_gpio, 1); + usleep_range(10 * 1000, 12 * 1000); + gpiod_set_value_cansleep(ov02a10->reset_gpio, 0); + usleep_range(10 * 1000, 12 * 1000); +#endif + + return 0; + +disable_clk: + clk_disable_unprepare(ov02a10->xvclk); + + return ret; +} + +static void __ov02a10_power_off(struct ov02a10 *ov02a10) +{ + clk_disable_unprepare(ov02a10->xvclk); + gpiod_set_value_cansleep(ov02a10->reset_gpio, 1); + gpiod_set_value_cansleep(ov02a10->pwdn_gpio, 1); + regulator_bulk_disable(ov02a10_NUM_SUPPLIES, ov02a10->supplies); +} + +static int __ov02a10_start_stream(struct ov02a10 *ov02a10) +{ + int ret; + + ret = ov02a10_write_array(ov02a10->client, ov02a10->cur_mode->reg_list); + if (ret) + return ret; + + ret = __v4l2_ctrl_handler_setup(&ov02a10->ctrl_handler); + if (ret) { + pr_err("__v4l2_ctrl_handler_setup fail %d\n", ret); + return ret; + } + + return ov02a10_write_reg(ov02a10->client, + REG_SC_CTRL_MODE, SC_CTRL_MODE_STREAMING); +} + +static int __ov02a10_stop_stream(struct ov02a10 *ov02a10) +{ + return ov02a10_write_reg(ov02a10->client, + REG_SC_CTRL_MODE, SC_CTRL_MODE_STANDBY); +} + +static int ov02a10_s_stream(struct v4l2_subdev *sd, int on) +{ + struct ov02a10 *ov02a10 = to_ov02a10(sd); + struct i2c_client *client = ov02a10->client; + int ret = 0; + + pr_info("ov02a10 s_stream-(%d)\n", on); + mutex_lock(&ov02a10->mutex); + + if (ov02a10->streaming == !on) { + if (on) { + ret = pm_runtime_get_sync(&client->dev); + if (ret < 0) { + pm_runtime_put_noidle(&client->dev); + goto unlock_and_return; + } + + ret = __ov02a10_start_stream(ov02a10); + if (ret) { + v4l2_err(sd, "start stream failed while write regs\n"); + pm_runtime_put(&client->dev); + goto unlock_and_return; + } + } else { + __ov02a10_stop_stream(ov02a10); + pm_runtime_put(&client->dev); + } + + ov02a10->streaming = on; + } + +unlock_and_return: + mutex_unlock(&ov02a10->mutex); + + return ret; +} + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API +static int ov02a10_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct ov02a10 *ov02a10 = to_ov02a10(sd); + struct v4l2_mbus_framefmt *try_fmt; + + mutex_lock(&ov02a10->mutex); + + try_fmt = v4l2_subdev_get_try_format(sd, fh->pad, 0); + /* Initialize try_fmt */ + ov02a10_fill_fmt(&supported_modes[0], try_fmt); + + mutex_unlock(&ov02a10->mutex); + + return 0; +} +#endif + +static int __maybe_unused ov02a10_runtime_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov02a10 *ov02a10 = to_ov02a10(sd); + + return __ov02a10_power_on(ov02a10); +} + +static int __maybe_unused ov02a10_runtime_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov02a10 *ov02a10 = to_ov02a10(sd); + + if (ov02a10->streaming == 1) { + __ov02a10_stop_stream(ov02a10); + ov02a10->streaming = 0; + } + __ov02a10_power_off(ov02a10); + + return 0; +} + +static const struct dev_pm_ops ov02a10_pm_ops = { + SET_RUNTIME_PM_OPS(ov02a10_runtime_suspend, + ov02a10_runtime_resume, NULL) +}; + +static int ov02a10_mod_reg(struct ov02a10 *ov02a10, u16 reg, + u8 mask, u8 val) +{ + u8 read_val; + int ret; + + ret = ov02a10_read_reg(ov02a10->client, reg, &read_val); + if (ret) + return ret; + + read_val &= ~mask; + val &= mask; + val |= read_val; + + return ov02a10_write_reg(ov02a10->client, reg, val); +} + +/* mirror & flip reg setting effective */ +static int ov02a10_bayer_order(struct ov02a10 *ov02a10) +{ + int ret; + + ret = ov02a10_write_reg(ov02a10->client, + OV02A10_REG_UPDOWN_MIRROR_ENABLE, + SC_CTRL_MODE_STREAMING); + if (ret < 0) + return ret; + + return 0; +} + +static int ov02a10_set_ctrl_hflip(struct ov02a10 *ov02a10, int value) +{ + /* + * If sensor is mounted upside down, mirror logic is inversed. + * + * Sensor is a BSI (Back Side Illuminated) one, + * so image captured is physically mirrored. + * This is why mirror logic is inversed in + * order to cancel this mirror effect. + */ + + /* + * P1: 0x3F: + * - [1]: Vertical upside down + * - [0]: Horizontal mirror + */ + + int ret; + + ret = ov02a10_mod_reg(ov02a10, OV02A10_REG_UPDOWN_MIRROR, + BIT(0), + (!(value ^ ov02a10->upside_down)) ? + BIT(0) : 0); + + if (ret < 0) + return ret; + + return ov02a10_bayer_order(ov02a10); +} + +static int ov02a10_set_ctrl_vflip(struct ov02a10 *ov02a10, int value) +{ + /* If sensor is mounted upside down, flip logic is inversed */ + + /* + * P1: 0x3F: + * - [1]: Vertical upside down + * - [0]: Horizontal mirror + */ + + int ret; + + ret = ov02a10_mod_reg(ov02a10, OV02A10_REG_UPDOWN_MIRROR, + BIT(1), + (value ^ ov02a10->upside_down) ? + BIT(1) : 0); + + if (ret < 0) + return ret; + + return ov02a10_bayer_order(ov02a10); +} + +static int ov02a10_set_test_pattern(struct ov02a10 *ov02a10, s32 value) +{ + int ret = 0; + + if (value) + return ov02a10_write_array(ov02a10->client, + ov02a10_test_pattern_regs); + + return ret; +} + +static int ov02a10_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct ov02a10 *ov02a10 = container_of(ctrl->handler, + struct ov02a10, ctrl_handler); + struct i2c_client *client = ov02a10->client; + s64 max_expo; + int ret = 0; + + /* Propagate change of current control to all related controls */ + switch (ctrl->id) { + case V4L2_CID_VBLANK: + /* Update max exposure while meeting expected vblanking */ + max_expo = ov02a10->cur_mode->height + ctrl->val - 4; + __v4l2_ctrl_modify_range(ov02a10->exposure, + ov02a10->exposure->minimum, max_expo, + ov02a10->exposure->step, + ov02a10->exposure->default_value); + break; + } + + if (pm_runtime_get_if_in_use(&client->dev) <= 0) + return 0; + + switch (ctrl->id) { + case V4L2_CID_EXPOSURE: + ret = ov02a10_write_reg(client, 0xfd, 0x01); + if (ret < 0) + return ret; + ret = ov02a10_write_reg(client, ov02a10_REG_EXPOSURE_H, + ((ctrl->val >> 8) & 0xFF)); + if (!ret) { + ret = ov02a10_write_reg(client, ov02a10_REG_EXPOSURE_L, + (ctrl->val & 0xFF)); + if (ret < 0) + return ret; + } + ret = ov02a10_write_reg(client, 0x01, 0x01); + if (ret < 0) + return ret; + break; + case V4L2_CID_ANALOGUE_GAIN: + ret = ov02a10_write_reg(client, 0xfd, 0x01); + if (ret < 0) + return ret; + ret = ov02a10_write_reg(client, ov02a10_REG_GAIN, + (ctrl->val & 0xFF)); + if (ret < 0) + return ret; + ret = ov02a10_write_reg(client, 0x01, 0x01); + if (ret < 0) + return ret; + break; + case V4L2_CID_VBLANK: + ret = ov02a10_write_reg(client, 0xfd, 0x01); + if (ret < 0) + return ret; + ret = ov02a10_write_reg(client, ov02a10_REG_VTS_H, + (((ctrl->val + + ov02a10->cur_mode->height - 1224) >> 8) + & 0xFF)); + if (!ret) { + ret = ov02a10_write_reg(client, ov02a10_REG_VTS_L, + ((ctrl->val + + ov02a10->cur_mode->height - + 1224) & 0xFF)); + if (ret < 0) + return ret; + } + ret = ov02a10_write_reg(client, 0x01, 0x01); + if (ret < 0) + return ret; + break; + case V4L2_CID_TEST_PATTERN: + ret = + ov02a10_set_test_pattern(ov02a10, + ov02a10_test_pattern_val[ctrl->val]); + break; + case V4L2_CID_HFLIP: + if (ov02a10->streaming) + return -EBUSY; + if (ctrl->val) + ret = ov02a10_set_ctrl_hflip(ov02a10, ctrl->val); + break; + case V4L2_CID_VFLIP: + if (ov02a10->streaming) + return -EBUSY; + if (ctrl->val) + ret = ov02a10_set_ctrl_vflip(ov02a10, ctrl->val); + break; + default: + dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n", + __func__, ctrl->id, ctrl->val); + ret = -EINVAL; + break; + }; + + pm_runtime_put(&client->dev); + + return ret; +} + +static const struct v4l2_subdev_video_ops ov02a10_video_ops = { + .s_stream = ov02a10_s_stream, +}; + +static const struct v4l2_subdev_pad_ops ov02a10_pad_ops = { + .enum_mbus_code = ov02a10_enum_mbus_code, + .enum_frame_size = ov02a10_enum_frame_sizes, + .get_fmt = ov02a10_get_fmt, + .set_fmt = ov02a10_set_fmt, +}; + +static const struct v4l2_subdev_ops ov02a10_subdev_ops = { + .video = &ov02a10_video_ops, + .pad = &ov02a10_pad_ops, +}; + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API +static const struct v4l2_subdev_internal_ops ov02a10_internal_ops = { + .open = ov02a10_open, +}; +#endif + +static const struct v4l2_ctrl_ops ov02a10_ctrl_ops = { + .s_ctrl = ov02a10_set_ctrl, +}; + +static int ov02a10_initialize_controls(struct ov02a10 *ov02a10) +{ + const struct ov02a10_mode *mode; + struct v4l2_ctrl_handler *handler; + struct v4l2_ctrl *ctrl; + u64 exposure_max; + u32 pixel_rate, h_blank; + int ret; + + handler = &ov02a10->ctrl_handler; + mode = ov02a10->cur_mode; + ret = v4l2_ctrl_handler_init(handler, 8); + if (ret) + return ret; + handler->lock = &ov02a10->mutex; + + ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, + 0, 0, link_freq_menu_items); + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + pixel_rate = (link_freq_menu_items[0] * 2 * ov02a10_LANES) / + ov02a10_BITS_PER_SAMPLE; + v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, + 0, pixel_rate, 1, pixel_rate); + + h_blank = mode->hts_def - mode->width; + ov02a10->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, + h_blank, h_blank, 1, h_blank); + if (ov02a10->hblank) + ov02a10->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + ov02a10->vblank = v4l2_ctrl_new_std(handler, &ov02a10_ctrl_ops, + V4L2_CID_VBLANK, mode->vts_def - + mode->height, + ov02a10_VTS_MAX - mode->height, 1, + mode->vts_def - mode->height); + + exposure_max = mode->vts_def - 4; + ov02a10->exposure = v4l2_ctrl_new_std(handler, &ov02a10_ctrl_ops, + V4L2_CID_EXPOSURE, + ov02a10_EXPOSURE_MIN, + exposure_max, + ov02a10_EXPOSURE_STEP, + mode->exp_def); + + ov02a10->anal_gain = v4l2_ctrl_new_std(handler, &ov02a10_ctrl_ops, + V4L2_CID_ANALOGUE_GAIN, + ov02a10_GAIN_MIN, + ov02a10_GAIN_MAX, + ov02a10_GAIN_STEP, + ov02a10_GAIN_DEFAULT); + + ov02a10->test_pattern = + v4l2_ctrl_new_std_menu_items(handler, + &ov02a10_ctrl_ops, + V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(ov02a10_test_pattern_menu) - + 1, 0, 0, ov02a10_test_pattern_menu); + + if (handler->error) { + ret = handler->error; + dev_err(&ov02a10->client->dev, + "Failed to init controls(%d)\n", ret); + goto err_free_handler; + } + + ov02a10->subdev.ctrl_handler = handler; + + return 0; + +err_free_handler: + v4l2_ctrl_handler_free(handler); + + return ret; +} + +static int ov02a10_check_sensor_id(struct ov02a10 *ov02a10, + struct i2c_client *client) +{ + struct device *dev = &ov02a10->client->dev; + u8 pid = 0; + u8 ver = 0; + int ret; + + /* Check sensor revision */ + ret = ov02a10_read_reg(client, OV02A10_REG_CHIP_ID_H, &pid); + if (!ret) + ret = ov02a10_read_reg(client, OV02A10_REG_CHIP_ID_L, &ver); + + if (!ret) { + unsigned short id; + + id = OV02A10_ID(pid, ver); + dev_info(dev, "ov02a10_sensor id(%04x)\n", id); + if (id != CHIP_ID) { + dev_err(dev, "Unexpected sensor id(%04x), ret(%d)\n", + id, ret); + return ret; + } + dev_info(dev, "Detected OV%04X sensor\n", id); + } + + return 0; +} + +static int ov02a10_configure_regulators(struct ov02a10 *ov02a10) +{ + int i; + + for (i = 0; i < ov02a10_NUM_SUPPLIES; i++) + ov02a10->supplies[i].supply = ov02a10_supply_names[i]; + + return devm_regulator_bulk_get(&ov02a10->client->dev, + ov02a10_NUM_SUPPLIES, + ov02a10->supplies); +} + +static int ov02a10_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct ov02a10 *ov02a10; + u32 rotation; + int ret; + + dev_info(dev, "ov02a10 probe ++\n"); + ov02a10 = devm_kzalloc(dev, sizeof(*ov02a10), GFP_KERNEL); + if (!ov02a10) + return -ENOMEM; + + ov02a10->client = client; + ov02a10->cur_mode = &supported_modes[0]; + + /* optional indication of physical rotation of sensor */ + ret = fwnode_property_read_u32(dev_fwnode(dev), "rotation", + &rotation); + if (!ret) { + switch (rotation) { + case 180: + ov02a10->upside_down = true; + /* fall through */ + case 0: + break; + default: + dev_warn(dev, "%u degrees rotation is not supported, ignoring...\n", + rotation); + } + } + + ov02a10->xvclk = devm_clk_get(dev, "xvclk"); + if (IS_ERR(ov02a10->xvclk)) { + dev_err(dev, "Failed to get xvclk\n"); + return -EINVAL; + } + ret = clk_set_rate(ov02a10->xvclk, ov02a10_XVCLK_FREQ); + if (ret < 0) { + dev_err(dev, "Failed to set xvclk rate (24MHz)\n"); + return ret; + } + if (clk_get_rate(ov02a10->xvclk) != ov02a10_XVCLK_FREQ) + dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n"); + + ov02a10->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW); + if (IS_ERR(ov02a10->pwdn_gpio)) { + dev_err(dev, "Failed to get powerdown-gpios\n"); + return -EINVAL; + } + + ov02a10->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(ov02a10->reset_gpio)) { + dev_err(dev, "Failed to get reset-gpios\n"); + return -EINVAL; + } + + ret = ov02a10_configure_regulators(ov02a10); + if (ret) { + dev_err(dev, "Failed to get power regulators\n"); + return ret; + } + + mutex_init(&ov02a10->mutex); + v4l2_i2c_subdev_init(&ov02a10->subdev, client, &ov02a10_subdev_ops); + ret = ov02a10_initialize_controls(ov02a10); + if (ret) { + dev_err(dev, "Failed to initialize controls\n"); + goto err_destroy_mutex; + } + + ret = __ov02a10_power_on(ov02a10); + if (ret) { + dev_err(dev, "Failed to power on\n"); + goto err_free_handler; + } + + ret = ov02a10_check_sensor_id(ov02a10, client); + if (ret) { + dev_err(dev, "Failed to detect id, go to power off\n"); + goto err_power_off; + } + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API + ov02a10->subdev.internal_ops = &ov02a10_internal_ops; + ov02a10->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; +#endif +#if defined(CONFIG_MEDIA_CONTROLLER) + ov02a10->pad.flags = MEDIA_PAD_FL_SOURCE; + ov02a10->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR; + ret = media_entity_pads_init(&ov02a10->subdev.entity, 1, &ov02a10->pad); + if (ret < 0) { + dev_err(dev, "Failed init pads\n"); + goto err_power_off; + } +#endif + + ret = v4l2_async_register_subdev(&ov02a10->subdev); + if (ret) { + dev_err(dev, "v4l2 async register subdev failed\n"); + goto err_clean_entity; + } + + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + pm_runtime_idle(dev); + dev_info(dev, "ov02a10 probe --\n"); + + return 0; + +err_clean_entity: +#if defined(CONFIG_MEDIA_CONTROLLER) + media_entity_cleanup(&ov02a10->subdev.entity); +#endif +err_power_off: + __ov02a10_power_off(ov02a10); +err_free_handler: + v4l2_ctrl_handler_free(&ov02a10->ctrl_handler); +err_destroy_mutex: + mutex_destroy(&ov02a10->mutex); + + return ret; +} + +static int ov02a10_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov02a10 *ov02a10 = to_ov02a10(sd); + + v4l2_async_unregister_subdev(sd); +#if defined(CONFIG_MEDIA_CONTROLLER) + media_entity_cleanup(&sd->entity); +#endif + v4l2_ctrl_handler_free(&ov02a10->ctrl_handler); + mutex_destroy(&ov02a10->mutex); + + pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + __ov02a10_power_off(ov02a10); + pm_runtime_set_suspended(&client->dev); + + return 0; +} + +#if IS_ENABLED(CONFIG_OF) +static const struct of_device_id ov02a10_of_match[] = { + { .compatible = "ovti,ov02a10" }, + {}, +}; +MODULE_DEVICE_TABLE(of, ov02a10_of_match); +#endif + +static struct i2c_driver ov02a10_i2c_driver = { + .driver = { + .name = "ov02a10", + .pm = &ov02a10_pm_ops, + .of_match_table = of_match_ptr(ov02a10_of_match), + }, + .probe = &ov02a10_probe, + .remove = &ov02a10_remove, +}; + +module_i2c_driver(ov02a10_i2c_driver); + +MODULE_AUTHOR("Dongchun Zhu "); +MODULE_DESCRIPTION("OmniVision OV02A10 sensor driver"); +MODULE_LICENSE("GPL v2");