From: Laurent Pinchart Date: Tue, 12 Aug 2025 21:46:06 +0000 (+0300) Subject: media: i2c: ov8856: Replace client->dev usage X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f2cc0ccab90fd798910198969dbf146d7c0c92e1;p=thirdparty%2Fkernel%2Fstable.git media: i2c: ov8856: Replace client->dev usage The driver needs to access the struct device in many places, and retrieves it from the i2c_client itself retrieved with v4l2_get_subdevdata(). Store it as a pointer in struct ov8856 and access it from there instead, to simplify the driver. While at it, fix a mistake in the sort order of include statements. Signed-off-by: Laurent Pinchart Signed-off-by: Sakari Ailus Reviewed-by: Mehdi Djait Signed-off-by: Hans Verkuil --- diff --git a/drivers/media/i2c/ov8856.c b/drivers/media/i2c/ov8856.c index b85051f053ffe..674ee36e394ca 100644 --- a/drivers/media/i2c/ov8856.c +++ b/drivers/media/i2c/ov8856.c @@ -1,7 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2019 Intel Corporation. -#include #include #include #include @@ -10,6 +9,8 @@ #include #include #include +#include + #include #include #include @@ -1414,6 +1415,8 @@ static const struct ov8856_reg_list bayer_offset_configs[] = { }; struct ov8856 { + struct device *dev; + struct v4l2_subdev sd; struct media_pad pad; struct v4l2_ctrl_handler ctrl_handler; @@ -1668,7 +1671,6 @@ static int ov8856_write_reg(struct ov8856 *ov8856, u16 reg, u16 len, u32 val) static int ov8856_write_reg_list(struct ov8856 *ov8856, const struct ov8856_reg_list *r_list) { - struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); unsigned int i; int ret; @@ -1676,7 +1678,7 @@ static int ov8856_write_reg_list(struct ov8856 *ov8856, ret = ov8856_write_reg(ov8856, r_list->regs[i].address, 1, r_list->regs[i].val); if (ret) { - dev_err_ratelimited(&client->dev, + dev_err_ratelimited(ov8856->dev, "failed to write reg 0x%4.4x. error = %d", r_list->regs[i].address, ret); return ret; @@ -1688,7 +1690,6 @@ static int ov8856_write_reg_list(struct ov8856 *ov8856, static int ov8856_identify_module(struct ov8856 *ov8856) { - struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); int ret; u32 val; @@ -1701,7 +1702,7 @@ static int ov8856_identify_module(struct ov8856 *ov8856) return ret; if (val != OV8856_CHIP_ID) { - dev_err(&client->dev, "chip id mismatch: %x!=%x", + dev_err(ov8856->dev, "chip id mismatch: %x!=%x", OV8856_CHIP_ID, val); return -ENXIO; } @@ -1818,7 +1819,6 @@ static int ov8856_set_ctrl(struct v4l2_ctrl *ctrl) { struct ov8856 *ov8856 = container_of(ctrl->handler, struct ov8856, ctrl_handler); - struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); s64 exposure_max; int ret = 0; @@ -1834,7 +1834,7 @@ static int ov8856_set_ctrl(struct v4l2_ctrl *ctrl) } /* V4L2 controls values will be applied only when power is already up */ - if (!pm_runtime_get_if_in_use(&client->dev)) + if (!pm_runtime_get_if_in_use(ov8856->dev)) return 0; switch (ctrl->id) { @@ -1876,7 +1876,7 @@ static int ov8856_set_ctrl(struct v4l2_ctrl *ctrl) break; } - pm_runtime_put(&client->dev); + pm_runtime_put(ov8856->dev); return ret; } @@ -1979,7 +1979,6 @@ static void ov8856_update_pad_format(struct ov8856 *ov8856, static int ov8856_start_streaming(struct ov8856 *ov8856) { - struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); const struct ov8856_reg_list *reg_list; int link_freq_index, ret; @@ -1992,21 +1991,21 @@ static int ov8856_start_streaming(struct ov8856 *ov8856) ret = ov8856_write_reg_list(ov8856, reg_list); if (ret) { - dev_err(&client->dev, "failed to set plls"); + dev_err(ov8856->dev, "failed to set plls"); return ret; } reg_list = &ov8856->cur_mode->reg_list; ret = ov8856_write_reg_list(ov8856, reg_list); if (ret) { - dev_err(&client->dev, "failed to set mode"); + dev_err(ov8856->dev, "failed to set mode"); return ret; } reg_list = &bayer_offset_configs[ov8856->cur_mbus_index]; ret = ov8856_write_reg_list(ov8856, reg_list); if (ret) { - dev_err(&client->dev, "failed to set mbus format"); + dev_err(ov8856->dev, "failed to set mbus format"); return ret; } @@ -2017,7 +2016,7 @@ static int ov8856_start_streaming(struct ov8856 *ov8856) ret = ov8856_write_reg(ov8856, OV8856_REG_MODE_SELECT, OV8856_REG_VALUE_08BIT, OV8856_MODE_STREAMING); if (ret) { - dev_err(&client->dev, "failed to set stream"); + dev_err(ov8856->dev, "failed to set stream"); return ret; } @@ -2026,22 +2025,19 @@ static int ov8856_start_streaming(struct ov8856 *ov8856) static void ov8856_stop_streaming(struct ov8856 *ov8856) { - struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); - if (ov8856_write_reg(ov8856, OV8856_REG_MODE_SELECT, OV8856_REG_VALUE_08BIT, OV8856_MODE_STANDBY)) - dev_err(&client->dev, "failed to set stream"); + dev_err(ov8856->dev, "failed to set stream"); } static int ov8856_set_stream(struct v4l2_subdev *sd, int enable) { struct ov8856 *ov8856 = to_ov8856(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); int ret = 0; mutex_lock(&ov8856->mutex); if (enable) { - ret = pm_runtime_resume_and_get(&client->dev); + ret = pm_runtime_resume_and_get(ov8856->dev); if (ret < 0) { mutex_unlock(&ov8856->mutex); return ret; @@ -2051,11 +2047,11 @@ static int ov8856_set_stream(struct v4l2_subdev *sd, int enable) if (ret) { enable = 0; ov8856_stop_streaming(ov8856); - pm_runtime_put(&client->dev); + pm_runtime_put(ov8856->dev); } } else { ov8856_stop_streaming(ov8856); - pm_runtime_put(&client->dev); + pm_runtime_put(ov8856->dev); } mutex_unlock(&ov8856->mutex); @@ -2255,8 +2251,9 @@ static const struct v4l2_subdev_internal_ops ov8856_internal_ops = { }; -static int ov8856_get_hwcfg(struct ov8856 *ov8856, struct device *dev) +static int ov8856_get_hwcfg(struct ov8856 *ov8856) { + struct device *dev = ov8856->dev; struct fwnode_handle *ep; struct fwnode_handle *fwnode = dev_fwnode(dev); struct v4l2_fwnode_endpoint bus_cfg = { @@ -2363,10 +2360,10 @@ static void ov8856_remove(struct i2c_client *client) v4l2_async_unregister_subdev(sd); media_entity_cleanup(&sd->entity); v4l2_ctrl_handler_free(sd->ctrl_handler); - pm_runtime_disable(&client->dev); + pm_runtime_disable(ov8856->dev); mutex_destroy(&ov8856->mutex); - ov8856_power_off(&client->dev); + ov8856_power_off(ov8856->dev); } static int ov8856_probe(struct i2c_client *client) @@ -2379,23 +2376,25 @@ static int ov8856_probe(struct i2c_client *client) if (!ov8856) return -ENOMEM; - ret = ov8856_get_hwcfg(ov8856, &client->dev); + ov8856->dev = &client->dev; + + ret = ov8856_get_hwcfg(ov8856); if (ret) return ret; v4l2_i2c_subdev_init(&ov8856->sd, client, &ov8856_subdev_ops); - full_power = acpi_dev_state_d0(&client->dev); + full_power = acpi_dev_state_d0(ov8856->dev); if (full_power) { - ret = ov8856_power_on(&client->dev); + ret = ov8856_power_on(ov8856->dev); if (ret) { - dev_err(&client->dev, "failed to power on\n"); + dev_err(ov8856->dev, "failed to power on\n"); return ret; } ret = ov8856_identify_module(ov8856); if (ret) { - dev_err(&client->dev, "failed to find sensor: %d", ret); + dev_err(ov8856->dev, "failed to find sensor: %d", ret); goto probe_power_off; } } @@ -2405,7 +2404,7 @@ static int ov8856_probe(struct i2c_client *client) ov8856->cur_mbus_index = ov8856->cur_mode->default_mbus_index; ret = ov8856_init_controls(ov8856); if (ret) { - dev_err(&client->dev, "failed to init controls: %d", ret); + dev_err(ov8856->dev, "failed to init controls: %d", ret); goto probe_error_v4l2_ctrl_handler_free; } @@ -2416,22 +2415,22 @@ static int ov8856_probe(struct i2c_client *client) ov8856->pad.flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_pads_init(&ov8856->sd.entity, 1, &ov8856->pad); if (ret) { - dev_err(&client->dev, "failed to init entity pads: %d", ret); + dev_err(ov8856->dev, "failed to init entity pads: %d", ret); goto probe_error_v4l2_ctrl_handler_free; } ret = v4l2_async_register_subdev_sensor(&ov8856->sd); if (ret < 0) { - dev_err(&client->dev, "failed to register V4L2 subdev: %d", + dev_err(ov8856->dev, "failed to register V4L2 subdev: %d", ret); goto probe_error_media_entity_cleanup; } /* Set the device's state to active if it's in D0 state. */ if (full_power) - pm_runtime_set_active(&client->dev); - pm_runtime_enable(&client->dev); - pm_runtime_idle(&client->dev); + pm_runtime_set_active(ov8856->dev); + pm_runtime_enable(ov8856->dev); + pm_runtime_idle(ov8856->dev); return 0; @@ -2443,7 +2442,7 @@ probe_error_v4l2_ctrl_handler_free: mutex_destroy(&ov8856->mutex); probe_power_off: - ov8856_power_off(&client->dev); + ov8856_power_off(ov8856->dev); return ret; }