From patchwork Thu Nov 19 16:19:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 329515 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ADE7EC6379D for ; Thu, 19 Nov 2020 16:20:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5DF0224698 for ; Thu, 19 Nov 2020 16:20:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728151AbgKSQUW (ORCPT ); Thu, 19 Nov 2020 11:20:22 -0500 Received: from relay5-d.mail.gandi.net ([217.70.183.197]:60913 "EHLO relay5-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728129AbgKSQUV (ORCPT ); Thu, 19 Nov 2020 11:20:21 -0500 X-Originating-IP: 93.34.118.233 Received: from localhost.localdomain (93-34-118-233.ip49.fastwebnet.it [93.34.118.233]) (Authenticated sender: jacopo@jmondi.org) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 5B8411C0003; Thu, 19 Nov 2020 16:20:17 +0000 (UTC) From: Jacopo Mondi To: linux-media@vger.kernel.org Cc: Jacopo Mondi , mchehab@kernel.org, sakari.ailus@linux.intel.com, hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com, roman.kovalivskyi@globallogic.com, dafna.hirschfeld@collabora.com, dave.stevenson@raspberrypi.org, naush@raspberrypi.com, erosca@de.adit-jv.com Subject: [PATCH v4 06/30] media: ov5647: Fix style issues Date: Thu, 19 Nov 2020 17:19:32 +0100 Message-Id: <20201119161956.756455-7-jacopo@jmondi.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201119161956.756455-1-jacopo@jmondi.org> References: <20201119161956.756455-1-jacopo@jmondi.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The driver has some obvious style issues which are worth fixing before expanding the driver capabilities. Fix: - Variable declaration order - Function parameters alignment - Multi-line comments and spurious line breaks - Use lowercase for hexadecimal values - > 80 cols lines Cosmetic change, no functional changes intended. Signed-off-by: Jacopo Mondi --- drivers/media/i2c/ov5647.c | 102 +++++++++++++++++-------------------- 1 file changed, 47 insertions(+), 55 deletions(-) diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c index 04551ed683df3..f8e982407ed6b 100644 --- a/drivers/media/i2c/ov5647.c +++ b/drivers/media/i2c/ov5647.c @@ -34,8 +34,6 @@ #include #include -#define SENSOR_NAME "ov5647" - /* * From the datasheet, "20ms after PWDN goes low or 20ms after RESETB goes * high if reset is inserted after PWDN goes high, host can access sensor's @@ -50,9 +48,9 @@ #define OV5647_SW_STANDBY 0x0100 #define OV5647_SW_RESET 0x0103 -#define OV5647_REG_CHIPID_H 0x300A -#define OV5647_REG_CHIPID_L 0x300B -#define OV5640_REG_PAD_OUT 0x300D +#define OV5647_REG_CHIPID_H 0x300a +#define OV5647_REG_CHIPID_L 0x300b +#define OV5640_REG_PAD_OUT 0x300d #define OV5647_REG_FRAME_OFF_NUMBER 0x4202 #define OV5647_REG_MIPI_CTRL00 0x4800 #define OV5647_REG_MIPI_CTRL14 0x4814 @@ -158,7 +156,7 @@ static struct regval_list ov5647_640x480[] = { {0x3808, 0x02}, {0x3809, 0x80}, {0x380a, 0x01}, - {0x380b, 0xE0}, + {0x380b, 0xe0}, {0x3801, 0x00}, {0x3802, 0x00}, {0x3803, 0x00}, @@ -209,9 +207,9 @@ static struct regval_list ov5647_640x480[] = { static int ov5647_write(struct v4l2_subdev *sd, u16 reg, u8 val) { - int ret; unsigned char data[3] = { reg >> 8, reg & 0xff, val}; struct i2c_client *client = v4l2_get_subdevdata(sd); + int ret; ret = i2c_master_send(client, data, 3); if (ret < 0) @@ -223,9 +221,9 @@ static int ov5647_write(struct v4l2_subdev *sd, u16 reg, u8 val) static int ov5647_read(struct v4l2_subdev *sd, u16 reg, u8 *val) { - int ret; unsigned char data_w[2] = { reg >> 8, reg & 0xff }; struct i2c_client *client = v4l2_get_subdevdata(sd); + int ret; ret = i2c_master_send(client, data_w, 2); if (ret < 0) { @@ -243,7 +241,7 @@ static int ov5647_read(struct v4l2_subdev *sd, u16 reg, u8 *val) } static int ov5647_write_array(struct v4l2_subdev *sd, - struct regval_list *regs, int array_size) + struct regval_list *regs, int array_size) { int i, ret; @@ -266,7 +264,9 @@ static int ov5647_set_virtual_channel(struct v4l2_subdev *sd, int channel) return ret; channel_id &= ~(3 << 6); - return ov5647_write(sd, OV5647_REG_MIPI_CTRL14, channel_id | (channel << 6)); + + return ov5647_write(sd, OV5647_REG_MIPI_CTRL14, + channel_id | (channel << 6)); } static int ov5647_stream_on(struct v4l2_subdev *sd) @@ -294,8 +294,9 @@ static int ov5647_stream_off(struct v4l2_subdev *sd) { int ret; - ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, MIPI_CTRL00_CLOCK_LANE_GATE - | MIPI_CTRL00_BUS_IDLE | MIPI_CTRL00_CLOCK_LANE_DISABLE); + ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, + MIPI_CTRL00_CLOCK_LANE_GATE | MIPI_CTRL00_BUS_IDLE | + MIPI_CTRL00_CLOCK_LANE_DISABLE); if (ret < 0) return ret; @@ -325,16 +326,16 @@ static int set_sw_standby(struct v4l2_subdev *sd, bool standby) static int __sensor_init(struct v4l2_subdev *sd) { - int ret; - u8 resetval, rdval; struct i2c_client *client = v4l2_get_subdevdata(sd); + u8 resetval, rdval; + int ret; ret = ov5647_read(sd, OV5647_SW_STANDBY, &rdval); if (ret < 0) return ret; ret = ov5647_write_array(sd, ov5647_640x480, - ARRAY_SIZE(ov5647_640x480)); + ARRAY_SIZE(ov5647_640x480)); if (ret < 0) { dev_err(&client->dev, "write sensor default regs error\n"); return ret; @@ -355,17 +356,15 @@ static int __sensor_init(struct v4l2_subdev *sd) return ret; } - /* - * stream off to make the clock lane into LP-11 state. - */ + /* Stream off to make the clock lane into LP-11 state. */ return ov5647_stream_off(sd); } static int ov5647_sensor_power(struct v4l2_subdev *sd, int on) { - int ret = 0; - struct ov5647 *ov5647 = to_state(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov5647 *ov5647 = to_state(sd); + int ret = 0; mutex_lock(&ov5647->lock); @@ -384,7 +383,7 @@ static int ov5647_sensor_power(struct v4l2_subdev *sd, int on) } ret = ov5647_write_array(sd, sensor_oe_enable_regs, - ARRAY_SIZE(sensor_oe_enable_regs)); + ARRAY_SIZE(sensor_oe_enable_regs)); if (ret < 0) { clk_disable_unprepare(ov5647->xclk); dev_err(&client->dev, @@ -403,18 +402,15 @@ static int ov5647_sensor_power(struct v4l2_subdev *sd, int on) dev_dbg(&client->dev, "OV5647 power off\n"); ret = ov5647_write_array(sd, sensor_oe_disable_regs, - ARRAY_SIZE(sensor_oe_disable_regs)); - + ARRAY_SIZE(sensor_oe_disable_regs)); if (ret < 0) dev_dbg(&client->dev, "disable oe failed\n"); ret = set_sw_standby(sd, true); - if (ret < 0) dev_dbg(&client->dev, "soft stby failed\n"); clk_disable_unprepare(ov5647->xclk); - gpiod_set_value_cansleep(ov5647->pwdn, 1); } @@ -430,10 +426,10 @@ static int ov5647_sensor_power(struct v4l2_subdev *sd, int on) #ifdef CONFIG_VIDEO_ADV_DEBUG static int ov5647_sensor_get_register(struct v4l2_subdev *sd, - struct v4l2_dbg_register *reg) + struct v4l2_dbg_register *reg) { - u8 val; int ret; + u8 val; ret = ov5647_read(sd, reg->reg & 0xff, &val); if (ret < 0) @@ -446,15 +442,13 @@ static int ov5647_sensor_get_register(struct v4l2_subdev *sd, } static int ov5647_sensor_set_register(struct v4l2_subdev *sd, - const struct v4l2_dbg_register *reg) + const struct v4l2_dbg_register *reg) { return ov5647_write(sd, reg->reg & 0xff, reg->val & 0xff); } #endif -/* - * Subdev core operations registration - */ +/* Subdev core operations registration */ static const struct v4l2_subdev_core_ops ov5647_subdev_core_ops = { .s_power = ov5647_sensor_power, #ifdef CONFIG_VIDEO_ADV_DEBUG @@ -476,8 +470,8 @@ static const struct v4l2_subdev_video_ops ov5647_subdev_video_ops = { }; static int ov5647_enum_mbus_code(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_mbus_code_enum *code) + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) { if (code->index > 0) return -EINVAL; @@ -493,7 +487,7 @@ static int ov5647_set_get_fmt(struct v4l2_subdev *sd, { struct v4l2_mbus_framefmt *fmt = &format->format; - /* Only one format is supported, so return that */ + /* Only one format is supported, so return that. */ memset(fmt, 0, sizeof(*fmt)); fmt->code = MEDIA_BUS_FMT_SBGGR8_1X8; fmt->colorspace = V4L2_COLORSPACE_SRGB; @@ -518,9 +512,9 @@ static const struct v4l2_subdev_ops ov5647_subdev_ops = { static int ov5647_detect(struct v4l2_subdev *sd) { + struct i2c_client *client = v4l2_get_subdevdata(sd); u8 read; int ret; - struct i2c_client *client = v4l2_get_subdevdata(sd); ret = ov5647_write(sd, OV5647_SW_RESET, 0x01); if (ret < 0) @@ -551,8 +545,7 @@ static int ov5647_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct v4l2_mbus_framefmt *format = v4l2_subdev_get_try_format(sd, fh->pad, 0); - struct v4l2_rect *crop = - v4l2_subdev_get_try_crop(sd, fh->pad, 0); + struct v4l2_rect *crop = v4l2_subdev_get_try_crop(sd, fh->pad, 0); crop->left = OV5647_COLUMN_START_DEF; crop->top = OV5647_ROW_START_DEF; @@ -578,7 +571,6 @@ static int ov5647_parse_dt(struct ov5647 *sensor, struct device_node *np) .bus_type = V4L2_MBUS_CSI2_DPHY, }; struct device_node *ep; - int ret; ep = of_graph_get_next_endpoint(np, NULL); @@ -594,17 +586,18 @@ static int ov5647_parse_dt(struct ov5647 *sensor, struct device_node *np) out: of_node_put(ep); + return ret; } static int ov5647_probe(struct i2c_client *client) { + struct device_node *np = client->dev.of_node; struct device *dev = &client->dev; struct ov5647 *sensor; - int ret; struct v4l2_subdev *sd; - struct device_node *np = client->dev.of_node; u32 xclk_freq; + int ret; sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); if (!sensor) @@ -618,7 +611,6 @@ static int ov5647_probe(struct i2c_client *client) } } - /* get system clock (xclk) */ sensor->xclk = devm_clk_get(dev, NULL); if (IS_ERR(sensor->xclk)) { dev_err(dev, "could not get xclk"); @@ -631,9 +623,8 @@ static int ov5647_probe(struct i2c_client *client) return -EINVAL; } - /* Request the power down GPIO asserted */ - sensor->pwdn = devm_gpiod_get_optional(&client->dev, "pwdn", - GPIOD_OUT_HIGH); + /* Request the power down GPIO asserted. */ + sensor->pwdn = devm_gpiod_get_optional(dev, "pwdn", GPIOD_OUT_HIGH); if (IS_ERR(sensor->pwdn)) { dev_err(dev, "Failed to get 'pwdn' gpio\n"); return -EINVAL; @@ -643,14 +634,14 @@ static int ov5647_probe(struct i2c_client *client) sd = &sensor->sd; v4l2_i2c_subdev_init(sd, client, &ov5647_subdev_ops); - sensor->sd.internal_ops = &ov5647_subdev_internal_ops; - sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + sd->internal_ops = &ov5647_subdev_internal_ops; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; sensor->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad); if (ret < 0) - goto mutex_remove; + goto mutex_destroy; if (sensor->pwdn) { gpiod_set_value_cansleep(sensor->pwdn, 0); @@ -658,22 +649,23 @@ static int ov5647_probe(struct i2c_client *client) } ret = ov5647_detect(sd); - gpiod_set_value_cansleep(sensor->pwdn, 1); - if (ret < 0) - goto error; + goto entity_cleanup; ret = v4l2_async_register_subdev(sd); if (ret < 0) - goto error; + goto entity_cleanup; dev_dbg(dev, "OmniVision OV5647 camera driver probed\n"); + return 0; -error: + +entity_cleanup: media_entity_cleanup(&sd->entity); -mutex_remove: +mutex_destroy: mutex_destroy(&sensor->lock); + return ret; } @@ -692,7 +684,7 @@ static int ov5647_remove(struct i2c_client *client) static const struct i2c_device_id ov5647_id[] = { { "ov5647", 0 }, - { } + { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, ov5647_id); @@ -707,7 +699,7 @@ MODULE_DEVICE_TABLE(of, ov5647_of_match); static struct i2c_driver ov5647_driver = { .driver = { .of_match_table = of_match_ptr(ov5647_of_match), - .name = SENSOR_NAME, + .name = "ov5647", }, .probe_new = ov5647_probe, .remove = ov5647_remove,