[v2,5/7,media] ov9650: add multiple variant support

Message ID	1499073368-31905-6-git-send-email-hugues.fruchet@st.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org> From: Hugues Fruchet <hugues.fruchet@st.com> To: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>, " H. Nikolaus Schaller" <hns@goldelico.com>, Guennadi Liakhovetski <g.liakhovetski@gmx.de>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@st.com>, Mauro Carvalho Chehab <mchehab@kernel.org>, Hans Verkuil <hverkuil@xs4all.nl> Subject: [PATCH v2 5/7] [media] ov9650: add multiple variant support Date: Mon, 3 Jul 2017 11:16:06 +0200 Message-ID: <1499073368-31905-6-git-send-email-hugues.fruchet@st.com> In-Reply-To: <1499073368-31905-1-git-send-email-hugues.fruchet@st.com> References: <1499073368-31905-1-git-send-email-hugues.fruchet@st.com> MIME-Version: 1.0 Precedence: list Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Yannick Fertre <yannick.fertre@st.com>, Benjamin Gaignard <benjamin.gaignard@linaro.org>, Hugues Fruchet <hugues.fruchet@st.com>, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org

diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c index db96698..50397e6 100644 --- a/drivers/media/i2c/ov9650.c +++ b/drivers/media/i2c/ov9650.c @@ -38,7 +38,7 @@ module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Debug level (0-2)"); -#define DRIVER_NAME "OV9650" +#define DRIVER_NAME "ov965x" /* * OV9650/OV9652 register definitions @@ -239,6 +239,13 @@ struct ov965x_framesize { const struct i2c_rv *regs; }; +struct ov965x_pixfmt { + u32 code; + u32 colorspace; + /* REG_TSLB value, only bits [3:2] may be set. */ + u8 tslb_reg; +}; + struct ov965x_interval { struct v4l2_fract interval; /* Maximum resolution for this interval */ @@ -257,6 +264,21 @@ struct ov965x { struct media_pad pad; enum v4l2_mbus_type bus_type; struct gpio_desc *gpios[NUM_GPIOS]; + + /* Variant specific regs and ops */ + const struct i2c_rv *init_regs; + const struct ov965x_framesize *framesizes; + unsigned int nb_of_framesizes; + const struct ov965x_pixfmt *formats; + unsigned int nb_of_formats; + const struct ov965x_interval *intervals; + unsigned int nb_of_intervals; + int (*initialize_controls)(struct ov965x *ov965x); + int (*set_frame_interval)(struct ov965x *ov965x, + struct v4l2_subdev_frame_interval *fi); + void (*update_exposure_ctrl)(struct ov965x *ov965x); + int (*set_params)(struct ov965x *ov965x); + /* External master clock frequency */ unsigned long mclk_frequency; struct clk *clk; @@ -416,13 +438,6 @@ struct ov965x { }, }; -struct ov965x_pixfmt { - u32 code; - u32 colorspace; - /* REG_TSLB value, only bits [3:2] may be set. */ - u8 tslb_reg; -}; - static const struct ov965x_pixfmt ov965x_formats[] = { { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG, 0x00}, { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG, 0x04}, @@ -576,7 +591,7 @@ static int ov965x_s_power(struct v4l2_subdev *sd, int on) __ov965x_set_power(ov965x, on); if (on) { ret = ov965x_write_array(client, - ov965x_init_regs); + ov965x->init_regs); ov965x->apply_frame_fmt = 1; ov965x->ctrls.update = 1; } @@ -1090,12 +1105,13 @@ static int ov965x_initialize_controls(struct ov965x *ov965x) /* * V4L2 subdev video and pad level operations */ -static void ov965x_get_default_format(struct v4l2_mbus_framefmt *mf) +static void ov965x_get_default_format(struct ov965x *ov965x, + struct v4l2_mbus_framefmt *mf) { - mf->width = ov965x_framesizes[0].width; - mf->height = ov965x_framesizes[0].height; - mf->colorspace = ov965x_formats[0].colorspace; - mf->code = ov965x_formats[0].code; + mf->width = ov965x->framesizes[0].width; + mf->height = ov965x->framesizes[0].height; + mf->colorspace = ov965x->formats[0].colorspace; + mf->code = ov965x->formats[0].code; mf->field = V4L2_FIELD_NONE; } @@ -1103,10 +1119,12 @@ static int ov965x_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(ov965x_formats)) + struct ov965x *ov965x = to_ov965x(sd); + + if (code->index >= ov965x->nb_of_formats) return -EINVAL; - code->code = ov965x_formats[code->index].code; + code->code = ov965x->formats[code->index].code; return 0; } @@ -1114,22 +1132,22 @@ static int ov965x_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse) { - int i = ARRAY_SIZE(ov965x_formats); + struct ov965x *ov965x = to_ov965x(sd); + int i = ov965x->nb_of_formats; - if (fse->index >= ARRAY_SIZE(ov965x_framesizes)) + if (fse->index >= ov965x->nb_of_framesizes) return -EINVAL; while (--i) - if (fse->code == ov965x_formats[i].code) + if (fse->code == ov965x->formats[i].code) break; - fse->code = ov965x_formats[i].code; + fse->code = ov965x->formats[i].code; - fse->min_width = ov965x_framesizes[fse->index].width; + fse->min_width = ov965x->framesizes[fse->index].width; fse->max_width = fse->min_width; - fse->max_height = ov965x_framesizes[fse->index].height; + fse->max_height = ov965x->framesizes[fse->index].height; fse->min_height = fse->max_height; - return 0; } @@ -1138,6 +1156,9 @@ static int ov965x_g_frame_interval(struct v4l2_subdev *sd, { struct ov965x *ov965x = to_ov965x(sd); + if (!ov965x->fiv) + return 0; + mutex_lock(&ov965x->lock); fi->interval = ov965x->fiv->interval; mutex_unlock(&ov965x->lock); @@ -1146,13 +1167,15 @@ static int ov965x_g_frame_interval(struct v4l2_subdev *sd, } static int __ov965x_set_frame_interval(struct ov965x *ov965x, - struct v4l2_subdev_frame_interval *fi) + struct v4l2_subdev_frame_interval *fi) { struct v4l2_mbus_framefmt *mbus_fmt = &ov965x->format; - const struct ov965x_interval *fiv = &ov965x_intervals[0]; + const struct ov965x_interval *fiv = ov965x->intervals; u64 req_int, err, min_err = ~0ULL; unsigned int i; + if (!fiv) + return 0; if (fi->interval.denominator == 0) return -EINVAL; @@ -1160,8 +1183,8 @@ static int __ov965x_set_frame_interval(struct ov965x *ov965x, req_int = (u64)(fi->interval.numerator * 10000) / fi->interval.denominator; - for (i = 0; i < ARRAY_SIZE(ov965x_intervals); i++) { - const struct ov965x_interval *iv = &ov965x_intervals[i]; + for (i = 0; i < ov965x->nb_of_intervals; i++) { + const struct ov965x_interval *iv = ov965x->intervals; if (mbus_fmt->width != iv->size.width || mbus_fmt->height != iv->size.height) @@ -1185,13 +1208,15 @@ static int ov965x_s_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct ov965x *ov965x = to_ov965x(sd); - int ret; + int ret = 0; v4l2_dbg(1, debug, sd, "Setting %d/%d frame interval\n", fi->interval.numerator, fi->interval.denominator); mutex_lock(&ov965x->lock); - ret = __ov965x_set_frame_interval(ov965x, fi); + if (ov965x->set_frame_interval) + ret = ov965x->set_frame_interval(ov965x, fi); + ov965x->apply_frame_fmt = 1; mutex_unlock(&ov965x->lock); return ret; @@ -1216,12 +1241,13 @@ static int ov965x_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config return 0; } -static void __ov965x_try_frame_size(struct v4l2_mbus_framefmt *mf, +static void __ov965x_try_frame_size(struct ov965x *ov965x, + struct v4l2_mbus_framefmt *mf, const struct ov965x_framesize **size) { - const struct ov965x_framesize *fsize = &ov965x_framesizes[0], + const struct ov965x_framesize *fsize = &ov965x->framesizes[0], *match = NULL; - int i = ARRAY_SIZE(ov965x_framesizes); + int i = ov965x->nb_of_framesizes; unsigned int min_err = UINT_MAX; while (i--) { @@ -1234,7 +1260,7 @@ static void __ov965x_try_frame_size(struct v4l2_mbus_framefmt *mf, fsize++; } if (!match) - match = &ov965x_framesizes[0]; + match = &ov965x->framesizes[0]; mf->width = match->width; mf->height = match->height; if (size) @@ -1244,20 +1270,20 @@ static void __ov965x_try_frame_size(struct v4l2_mbus_framefmt *mf, static int ov965x_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { - unsigned int index = ARRAY_SIZE(ov965x_formats); - struct v4l2_mbus_framefmt *mf = &fmt->format; struct ov965x *ov965x = to_ov965x(sd); + unsigned int index = ov965x->nb_of_formats; + struct v4l2_mbus_framefmt *mf = &fmt->format; const struct ov965x_framesize *size = NULL; int ret = 0; - __ov965x_try_frame_size(mf, &size); + __ov965x_try_frame_size(ov965x, mf, &size); while (--index) - if (ov965x_formats[index].code == mf->code) + if (ov965x->formats[index].code == mf->code) break; mf->colorspace = V4L2_COLORSPACE_JPEG; - mf->code = ov965x_formats[index].code; + mf->code = ov965x->formats[index].code; mf->field = V4L2_FIELD_NONE; mutex_lock(&ov965x->lock); @@ -1273,7 +1299,7 @@ static int ov965x_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config } else { ov965x->frame_size = size; ov965x->format = fmt->format; - ov965x->tslb_reg = ov965x_formats[index].tslb_reg; + ov965x->tslb_reg = ov965x->formats[index].tslb_reg; ov965x->apply_frame_fmt = 1; } } @@ -1283,12 +1309,14 @@ static int ov965x_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config .interval = { 0, 1 } }; /* Reset to minimum possible frame interval */ - __ov965x_set_frame_interval(ov965x, &fiv); + if (ov965x->set_frame_interval) + ret = ov965x->set_frame_interval(ov965x, &fiv); } mutex_unlock(&ov965x->lock); if (!ret) - ov965x_update_exposure_ctrl(ov965x); + if (ov965x->update_exposure_ctrl) + ov965x->update_exposure_ctrl(ov965x); return ret; } @@ -1363,7 +1391,8 @@ static int ov965x_s_stream(struct v4l2_subdev *sd, int on) mutex_lock(&ov965x->lock); if (ov965x->streaming == !on) { if (on) - ret = __ov965x_set_params(ov965x); + if (ov965x->set_params) + ret = ov965x->set_params(ov965x); if (!ret && ctrls->update) { /* @@ -1396,8 +1425,9 @@ static int ov965x_s_stream(struct v4l2_subdev *sd, int on) static int ov965x_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(sd, fh->pad, 0); + struct ov965x *ov965x = to_ov965x(sd); - ov965x_get_default_format(mf); + ov965x_get_default_format(ov965x, mf); return 0; } @@ -1516,8 +1546,6 @@ static int ov965x_probe(struct i2c_client *client, ov965x = devm_kzalloc(&client->dev, sizeof(*ov965x), GFP_KERNEL); if (!ov965x) return -ENOMEM; - - mutex_init(&ov965x->lock); ov965x->client = client; mutex_init(&ov965x->lock); @@ -1557,38 +1585,52 @@ static int ov965x_probe(struct i2c_client *client, sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; - ret = ov965x_configure_gpios(ov965x, pdata); - if (ret < 0) - return ret; - ov965x->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sd->entity, 1, &ov965x->pad); if (ret < 0) return ret; - ret = ov965x_initialize_controls(ov965x); + ret = ov965x_detect_sensor(sd); if (ret < 0) goto err_me; - ov965x_get_default_format(&ov965x->format); - ov965x->frame_size = &ov965x_framesizes[0]; + ov965x->init_regs = ov965x_init_regs; + ov965x->initialize_controls = ov965x_initialize_controls; + ov965x->framesizes = ov965x_framesizes; + ov965x->nb_of_framesizes = ARRAY_SIZE(ov965x_framesizes); + ov965x->formats = ov965x_formats; + ov965x->nb_of_formats = ARRAY_SIZE(ov965x_formats); + ov965x->intervals = ov965x_intervals; + ov965x->nb_of_intervals = ARRAY_SIZE(ov965x_intervals); ov965x->fiv = &ov965x_intervals[0]; + ov965x->set_frame_interval = __ov965x_set_frame_interval; + ov965x->update_exposure_ctrl = ov965x_update_exposure_ctrl; + ov965x->set_params = __ov965x_set_params; - ret = ov965x_detect_sensor(sd); - if (ret < 0) - goto err_ctrls; + ov965x->frame_size = &ov965x->framesizes[0]; + ov965x_get_default_format(ov965x, &ov965x->format); + + if (ov965x->initialize_controls) { + ret = ov965x->initialize_controls(ov965x); + if (ret < 0) + goto err_ctrls; + } /* Update exposure time min/max to match frame format */ - ov965x_update_exposure_ctrl(ov965x); + if (ov965x->update_exposure_ctrl) + ov965x->update_exposure_ctrl(ov965x); ret = v4l2_async_register_subdev(sd); if (ret < 0) goto err_ctrls; + dev_info(&client->dev, "%s driver probed\n", sd->name); return 0; + err_ctrls: - v4l2_ctrl_handler_free(sd->ctrl_handler); + if (sd->ctrl_handler) + v4l2_ctrl_handler_free(sd->ctrl_handler); err_me: media_entity_cleanup(&sd->entity); return ret;

[v2,5/7,media] ov9650: add multiple variant support

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Patch