From: Dave Stevenson <dave.stevenson@raspberrypi.com>
To: Sakari Ailus <sakari.ailus@linux.intel.com>,
linux-media@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
devicetree@vger.kernel.org
Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
Subject: [PATCH 09/21] media: i2c: imx258: Add support for running on 2 CSI data lanes
Date: Tue, 30 May 2023 18:29:48 +0100 [thread overview]
Message-ID: <20230530173000.3060865-10-dave.stevenson@raspberrypi.com> (raw)
In-Reply-To: <20230530173000.3060865-1-dave.stevenson@raspberrypi.com>
Extends the driver to also support 2 data lanes.
Frame rates are obviously more restricted on 2 lanes, but some
hardware simply hasn't wired more up.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/media/i2c/imx258.c | 211 ++++++++++++++++++++++++++++++++-----
1 file changed, 187 insertions(+), 24 deletions(-)
diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
index d40521f9a3c6..433dff7f1fa0 100644
--- a/drivers/media/i2c/imx258.c
+++ b/drivers/media/i2c/imx258.c
@@ -86,13 +86,17 @@ struct imx258_reg_list {
const struct imx258_reg *regs;
};
+#define IMX258_LANE_CONFIGS 2
+#define IMX258_2_LANE_MODE 0
+#define IMX258_4_LANE_MODE 1
+
/* Link frequency config */
struct imx258_link_freq_config {
u64 link_frequency;
u32 pixels_per_line;
/* PLL registers for this link frequency */
- struct imx258_reg_list reg_list;
+ struct imx258_reg_list reg_list[IMX258_LANE_CONFIGS];
};
/* Mode : resolution and related config&values */
@@ -112,8 +116,30 @@ struct imx258_mode {
struct imx258_reg_list reg_list;
};
-/* 4208x3120 needs 1267Mbps/lane, 4 lanes */
-static const struct imx258_reg mipi_1267mbps_19_2mhz[] = {
+/* 4208x3120 needs 1267Mbps/lane, 4 lanes. Use that rate on 2 lanes as well */
+static const struct imx258_reg mipi_1267mbps_19_2mhz_2l[] = {
+ { 0x0136, 0x13 },
+ { 0x0137, 0x33 },
+ { 0x0301, 0x0A },
+ { 0x0303, 0x02 },
+ { 0x0305, 0x03 },
+ { 0x0306, 0x00 },
+ { 0x0307, 0xC6 },
+ { 0x0309, 0x0A },
+ { 0x030B, 0x01 },
+ { 0x030D, 0x02 },
+ { 0x030E, 0x00 },
+ { 0x030F, 0xD8 },
+ { 0x0310, 0x00 },
+
+ { 0x0114, 0x01 },
+ { 0x0820, 0x09 },
+ { 0x0821, 0xa6 },
+ { 0x0822, 0x66 },
+ { 0x0823, 0x66 },
+};
+
+static const struct imx258_reg mipi_1267mbps_19_2mhz_4l[] = {
{ 0x0136, 0x13 },
{ 0x0137, 0x33 },
{ 0x0301, 0x05 },
@@ -127,16 +153,18 @@ static const struct imx258_reg mipi_1267mbps_19_2mhz[] = {
{ 0x030E, 0x00 },
{ 0x030F, 0xD8 },
{ 0x0310, 0x00 },
+
+ { 0x0114, 0x03 },
{ 0x0820, 0x13 },
{ 0x0821, 0x4C },
{ 0x0822, 0xCC },
{ 0x0823, 0xCC },
};
-static const struct imx258_reg mipi_1272mbps_24mhz[] = {
+static const struct imx258_reg mipi_1272mbps_24mhz_2l[] = {
{ 0x0136, 0x18 },
{ 0x0137, 0x00 },
- { 0x0301, 0x05 },
+ { 0x0301, 0x0a },
{ 0x0303, 0x02 },
{ 0x0305, 0x04 },
{ 0x0306, 0x00 },
@@ -147,13 +175,59 @@ static const struct imx258_reg mipi_1272mbps_24mhz[] = {
{ 0x030E, 0x00 },
{ 0x030F, 0xD8 },
{ 0x0310, 0x00 },
+
+ { 0x0114, 0x01 },
{ 0x0820, 0x13 },
{ 0x0821, 0x4C },
{ 0x0822, 0xCC },
{ 0x0823, 0xCC },
};
-static const struct imx258_reg mipi_640mbps_19_2mhz[] = {
+static const struct imx258_reg mipi_1272mbps_24mhz_4l[] = {
+ { 0x0136, 0x18 },
+ { 0x0137, 0x00 },
+ { 0x0301, 0x05 },
+ { 0x0303, 0x02 },
+ { 0x0305, 0x04 },
+ { 0x0306, 0x00 },
+ { 0x0307, 0xD4 },
+ { 0x0309, 0x0A },
+ { 0x030B, 0x01 },
+ { 0x030D, 0x02 },
+ { 0x030E, 0x00 },
+ { 0x030F, 0xD8 },
+ { 0x0310, 0x00 },
+
+ { 0x0114, 0x03 },
+ { 0x0820, 0x13 },
+ { 0x0821, 0xE0 },
+ { 0x0822, 0x00 },
+ { 0x0823, 0x00 },
+};
+
+static const struct imx258_reg mipi_640mbps_19_2mhz_2l[] = {
+ { 0x0136, 0x13 },
+ { 0x0137, 0x33 },
+ { 0x0301, 0x05 },
+ { 0x0303, 0x02 },
+ { 0x0305, 0x03 },
+ { 0x0306, 0x00 },
+ { 0x0307, 0x64 },
+ { 0x0309, 0x0A },
+ { 0x030B, 0x01 },
+ { 0x030D, 0x02 },
+ { 0x030E, 0x00 },
+ { 0x030F, 0xD8 },
+ { 0x0310, 0x00 },
+
+ { 0x0114, 0x01 },
+ { 0x0820, 0x05 },
+ { 0x0821, 0x00 },
+ { 0x0822, 0x00 },
+ { 0x0823, 0x00 },
+};
+
+static const struct imx258_reg mipi_640mbps_19_2mhz_4l[] = {
{ 0x0136, 0x13 },
{ 0x0137, 0x33 },
{ 0x0301, 0x05 },
@@ -167,13 +241,37 @@ static const struct imx258_reg mipi_640mbps_19_2mhz[] = {
{ 0x030E, 0x00 },
{ 0x030F, 0xD8 },
{ 0x0310, 0x00 },
+
+ { 0x0114, 0x03 },
{ 0x0820, 0x0A },
{ 0x0821, 0x00 },
{ 0x0822, 0x00 },
{ 0x0823, 0x00 },
};
-static const struct imx258_reg mipi_642mbps_24mhz[] = {
+static const struct imx258_reg mipi_642mbps_24mhz_2l[] = {
+ { 0x0136, 0x18 },
+ { 0x0137, 0x00 },
+ { 0x0301, 0x0A },
+ { 0x0303, 0x02 },
+ { 0x0305, 0x04 },
+ { 0x0306, 0x00 },
+ { 0x0307, 0x6B },
+ { 0x0309, 0x0A },
+ { 0x030B, 0x01 },
+ { 0x030D, 0x02 },
+ { 0x030E, 0x00 },
+ { 0x030F, 0xD8 },
+ { 0x0310, 0x00 },
+
+ { 0x0114, 0x01 },
+ { 0x0820, 0x0A },
+ { 0x0821, 0x00 },
+ { 0x0822, 0x00 },
+ { 0x0823, 0x00 },
+};
+
+static const struct imx258_reg mipi_642mbps_24mhz_4l[] = {
{ 0x0136, 0x18 },
{ 0x0137, 0x00 },
{ 0x0301, 0x05 },
@@ -187,6 +285,8 @@ static const struct imx258_reg mipi_642mbps_24mhz[] = {
{ 0x030E, 0x00 },
{ 0x030F, 0xD8 },
{ 0x0310, 0x00 },
+
+ { 0x0114, 0x03 },
{ 0x0820, 0x0A },
{ 0x0821, 0x00 },
{ 0x0822, 0x00 },
@@ -241,7 +341,6 @@ static const struct imx258_reg mode_common_regs[] = {
{ 0x5F05, 0xED },
{ 0x0112, 0x0A },
{ 0x0113, 0x0A },
- { 0x0114, 0x03 },
{ 0x0342, 0x14 },
{ 0x0343, 0xE8 },
{ 0x0344, 0x00 },
@@ -360,11 +459,13 @@ enum {
/*
* pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
- * data rate => double data rate; number of lanes => 4; bits per pixel => 10
+ * data rate => double data rate;
+ * number of lanes => (configurable 2 or 4);
+ * bits per pixel => 10
*/
-static u64 link_freq_to_pixel_rate(u64 f)
+static u64 link_freq_to_pixel_rate(u64 f, unsigned int nlanes)
{
- f *= 2 * 4;
+ f *= 2 * nlanes;
do_div(f, 10);
return f;
@@ -394,15 +495,27 @@ static const struct imx258_link_freq_config link_freq_configs_19_2[] = {
[IMX258_LINK_FREQ_1267MBPS] = {
.pixels_per_line = IMX258_PPL_DEFAULT,
.reg_list = {
- .num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz),
- .regs = mipi_1267mbps_19_2mhz,
+ [IMX258_2_LANE_MODE] = {
+ .num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz_2l),
+ .regs = mipi_1267mbps_19_2mhz_2l,
+ },
+ [IMX258_4_LANE_MODE] = {
+ .num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz_4l),
+ .regs = mipi_1267mbps_19_2mhz_4l,
+ },
}
},
[IMX258_LINK_FREQ_640MBPS] = {
.pixels_per_line = IMX258_PPL_DEFAULT,
.reg_list = {
- .num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz),
- .regs = mipi_640mbps_19_2mhz,
+ [IMX258_2_LANE_MODE] = {
+ .num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz_2l),
+ .regs = mipi_640mbps_19_2mhz_2l,
+ },
+ [IMX258_4_LANE_MODE] = {
+ .num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz_4l),
+ .regs = mipi_640mbps_19_2mhz_4l,
+ },
}
},
};
@@ -411,15 +524,27 @@ static const struct imx258_link_freq_config link_freq_configs_24[] = {
[IMX258_LINK_FREQ_1267MBPS] = {
.pixels_per_line = IMX258_PPL_DEFAULT,
.reg_list = {
- .num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz),
- .regs = mipi_1272mbps_24mhz,
+ [IMX258_2_LANE_MODE] = {
+ .num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz_2l),
+ .regs = mipi_1272mbps_24mhz_2l,
+ },
+ [IMX258_4_LANE_MODE] = {
+ .num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz_4l),
+ .regs = mipi_1272mbps_24mhz_4l,
+ },
}
},
[IMX258_LINK_FREQ_640MBPS] = {
.pixels_per_line = IMX258_PPL_DEFAULT,
.reg_list = {
- .num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz),
- .regs = mipi_642mbps_24mhz,
+ [IMX258_2_LANE_MODE] = {
+ .num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz_2l),
+ .regs = mipi_642mbps_24mhz_2l,
+ },
+ [IMX258_4_LANE_MODE] = {
+ .num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz_4l),
+ .regs = mipi_642mbps_24mhz_4l,
+ },
}
},
};
@@ -478,6 +603,7 @@ struct imx258 {
const struct imx258_link_freq_config *link_freq_configs;
const s64 *link_freq_menu_items;
+ unsigned int nlanes;
/*
* Mutex for serialized access:
@@ -787,7 +913,7 @@ static int imx258_set_pad_format(struct v4l2_subdev *sd,
__v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index);
link_freq = imx258->link_freq_menu_items[mode->link_freq_index];
- pixel_rate = link_freq_to_pixel_rate(link_freq);
+ pixel_rate = link_freq_to_pixel_rate(link_freq, imx258->nlanes);
__v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate);
/* Update limits and set FPS to default */
vblank_def = imx258->cur_mode->vts_def -
@@ -816,11 +942,13 @@ static int imx258_start_streaming(struct imx258 *imx258)
{
struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
const struct imx258_reg_list *reg_list;
+ const struct imx258_link_freq_config *link_freq_cfg;
int ret, link_freq_index;
/* Setup PLL */
link_freq_index = imx258->cur_mode->link_freq_index;
- reg_list = &imx258->link_freq_configs[link_freq_index].reg_list;
+ link_freq_cfg = &imx258->link_freq_configs[link_freq_index];
+ reg_list = &link_freq_cfg->reg_list[imx258->nlanes == 2 ? 0 : 1];
ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
if (ret) {
dev_err(&client->dev, "%s failed to set plls\n", __func__);
@@ -1074,9 +1202,11 @@ static int imx258_init_controls(struct imx258 *imx258)
vflip->flags |= V4L2_CTRL_FLAG_READ_ONLY;
pixel_rate_max =
- link_freq_to_pixel_rate(imx258->link_freq_menu_items[0]);
+ link_freq_to_pixel_rate(imx258->link_freq_menu_items[0],
+ imx258->nlanes);
pixel_rate_min =
- link_freq_to_pixel_rate(imx258->link_freq_menu_items[1]);
+ link_freq_to_pixel_rate(imx258->link_freq_menu_items[1],
+ imx258->nlanes);
/* By default, PIXEL_RATE is read only */
imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
V4L2_CID_PIXEL_RATE,
@@ -1174,6 +1304,10 @@ static int imx258_get_regulators(struct imx258 *imx258,
static int imx258_probe(struct i2c_client *client)
{
struct imx258 *imx258;
+ struct fwnode_handle *endpoint;
+ struct v4l2_fwnode_endpoint ep = {
+ .bus_type = V4L2_MBUS_CSI2_DPHY
+ };
int ret;
u32 val = 0;
@@ -1216,13 +1350,38 @@ static int imx258_probe(struct i2c_client *client)
return -EINVAL;
}
+ endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), NULL);
+ if (!endpoint) {
+ dev_err(&client->dev, "Endpoint node not found\n");
+ return -EINVAL;
+ }
+
+ ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep);
+ fwnode_handle_put(endpoint);
+ if (ret == -ENXIO) {
+ dev_err(&client->dev, "Unsupported bus type, should be CSI2\n");
+ goto error_endpoint_poweron;
+ } else if (ret) {
+ dev_err(&client->dev, "Parsing endpoint node failed\n");
+ goto error_endpoint_poweron;
+ }
+
+ /* Get number of data lanes */
+ imx258->nlanes = ep.bus.mipi_csi2.num_data_lanes;
+ if (imx258->nlanes != 2 && imx258->nlanes != 4) {
+ dev_err(&client->dev, "Invalid data lanes: %u\n",
+ imx258->nlanes);
+ ret = -EINVAL;
+ goto error_endpoint_poweron;
+ }
+
/* Initialize subdev */
v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops);
/* Will be powered off via pm_runtime_idle */
ret = imx258_power_on(&client->dev);
if (ret)
- return ret;
+ goto error_endpoint_poweron;
/* Check module identity */
ret = imx258_identify_module(imx258);
@@ -1255,6 +1414,7 @@ static int imx258_probe(struct i2c_client *client)
pm_runtime_set_active(&client->dev);
pm_runtime_enable(&client->dev);
pm_runtime_idle(&client->dev);
+ v4l2_fwnode_endpoint_free(&endpoint);
return 0;
@@ -1267,6 +1427,9 @@ static int imx258_probe(struct i2c_client *client)
error_identify:
imx258_power_off(&client->dev);
+error_endpoint_poweron:
+ v4l2_fwnode_endpoint_free(&ep);
+
return ret;
}
--
2.25.1
next prev parent reply other threads:[~2023-05-30 17:31 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-30 17:29 [PATCH 00/21] imx258 improvements series Dave Stevenson
2023-05-30 17:29 ` [PATCH 01/21] media: i2c: imx258: Remove unused defines Dave Stevenson
2023-05-31 15:08 ` Jacopo Mondi
2023-05-30 17:29 ` [PATCH 02/21] media: i2c: imx258: Make image geometry meet sensor requirements Dave Stevenson
2023-05-31 15:09 ` Jacopo Mondi
2023-05-30 17:29 ` [PATCH 03/21] media: i2c: imx258: Disable digital cropping on binned modes Dave Stevenson
2023-05-31 15:02 ` Jacopo Mondi
2023-05-30 17:29 ` [PATCH 04/21] media: i2c: imx258: Remove redundant I2C writes Dave Stevenson
2023-05-31 15:10 ` Jacopo Mondi
2023-05-30 17:29 ` [PATCH 05/21] media: i2c: imx258: Add regulator control Dave Stevenson
2023-05-31 15:11 ` Jacopo Mondi
2023-05-31 15:26 ` Dave Stevenson
2023-05-30 17:29 ` [PATCH 06/21] media: i2c: imx258: Make V4L2_CID_VBLANK configurable Dave Stevenson
2023-05-31 15:16 ` Jacopo Mondi
2023-05-31 15:33 ` Dave Stevenson
2023-05-30 17:29 ` [PATCH 07/21] media: i2c: imx258: Split out common registers from the mode based ones Dave Stevenson
2023-05-31 15:26 ` Jacopo Mondi
2023-05-30 17:29 ` [PATCH 08/21] media: i2c: imx258: Add support for 24MHz clock Dave Stevenson
2023-06-02 12:59 ` Jacopo Mondi
2023-05-30 17:29 ` Dave Stevenson [this message]
2023-05-30 17:37 ` [PATCH 09/21] media: i2c: imx258: Add support for running on 2 CSI data lanes Dave Stevenson
2023-05-31 8:07 ` kernel test robot
2023-06-02 13:23 ` Jacopo Mondi
2023-06-02 17:46 ` Dave Stevenson
2023-05-30 17:29 ` [PATCH 10/21] media: i2c: imx258: Follow normal V4L2 behaviours for clipping exposure Dave Stevenson
2023-05-31 15:27 ` Jacopo Mondi
2023-05-30 17:29 ` [PATCH 11/21] media: i2c: imx258: Add get_selection for pixel array information Dave Stevenson
2023-06-02 13:24 ` Jacopo Mondi
2023-05-30 17:29 ` [PATCH 12/21] media: i2c: imx258: Allow configuration of clock lane behaviour Dave Stevenson
2023-06-02 13:26 ` Jacopo Mondi
2023-06-02 15:18 ` Dave Stevenson
2023-05-30 17:29 ` [PATCH 13/21] media: i2c: imx258: Correct max FRM_LENGTH_LINES value Dave Stevenson
2023-06-02 13:33 ` Jacopo Mondi
2023-05-30 17:29 ` [PATCH 14/21] media: i2c: imx258: Add support for long exposure modes Dave Stevenson
2023-06-02 13:38 ` Jacopo Mondi
2023-06-02 17:12 ` Dave Stevenson
2023-05-30 17:29 ` [PATCH 15/21] media: i2c: imx258: Issue reset before starting streaming Dave Stevenson
2023-06-02 13:42 ` Jacopo Mondi
2023-05-30 17:29 ` [PATCH 16/21] media: i2c: imx258: Set pixel_rate range to the same as the value Dave Stevenson
2023-06-02 13:44 ` Jacopo Mondi
2023-05-30 17:29 ` [PATCH 17/21] media: i2c: imx258: Support faster pixel rate on binned modes Dave Stevenson
2023-05-30 17:29 ` [PATCH 18/21] dt-bindings: media: imx258: Rename to include vendor prefix Dave Stevenson
2023-05-30 17:35 ` Conor Dooley
2023-05-30 17:29 ` [PATCH 19/21] dt-bindings: media: imx258: Add alternate compatible strings Dave Stevenson
2023-05-30 17:38 ` Conor Dooley
2023-05-30 17:48 ` Dave Stevenson
2023-05-30 19:36 ` Conor Dooley
2023-05-30 17:29 ` [PATCH 20/21] media: i2c: imx258: Change register settings for variants of the sensor Dave Stevenson
2023-06-02 13:48 ` Jacopo Mondi
2023-06-02 14:30 ` Dave Stevenson
2023-05-30 17:30 ` [PATCH 21/21] media: i2c: imx258: Make HFLIP and VFLIP controls writable Dave Stevenson
2023-06-02 13:58 ` Jacopo Mondi
2023-06-02 14:42 ` Dave Stevenson
2023-07-18 12:08 ` [PATCH 00/21] imx258 improvements series Arnaud Ferraris
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