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Sun, 14 Apr 2024 20:35:32 +0000 X-Zone-Loop: 1f8d859ccf3408d8f2e5125b660908ef55c405f38dc9 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=luigi311.com; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=bvPZw9KOBSre7IsAJ4d3gGr7GFmtXTKGH7LaPl1+Z6k=; b=gANf1XZMvad3MkgXiPcwH+0DAR mNnUGjIpWpGIHxLQW8xSPs5yqKT9G49Fv6Ss5tssl2zZNTGUATjc+uCSOJ0sQf4egGbZ8c3Ju6jEK V18EmANHILH0OEJTIZOaeVp1o6jTc0VpKZnu5Lbo0AnubqQe436x0jovTYpu47vyAchrOyLpK7sF0 5O7t5P52/wP5LJjwcMKM/ssQvdhtCnvDbj7SS+/3lx+8HL1pNwul7W4D6r50s79UGGTICq7UlE079 n1U6Jkw3hbRab20iU8jwXVI/aktPXUOF1solV0v8RQx5otZsP1rzEE08JeJIstWL/ETJpdjVU2qng iOXGNljg==; From: git@luigi311.com To: linux-media@vger.kernel.org Cc: dave.stevenson@raspberrypi.com, jacopo.mondi@ideasonboard.com, mchehab@kernel.org, robh@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, sakari.ailus@linux.intel.com, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, pavel@ucw.cz, phone-devel@vger.kernel.org, Luis Garcia Subject: [PATCH v4 09/25] media: i2c: imx258: Add support for running on 2 CSI data lanes Date: Sun, 14 Apr 2024 14:34:47 -0600 Message-ID: <20240414203503.18402-10-git@luigi311.com> In-Reply-To: <20240414203503.18402-1-git@luigi311.com> References: <20240414203503.18402-1-git@luigi311.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Authenticated-Id: personal@luigi311.com From: Dave Stevenson 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 Signed-off-by: Luis Garcia --- drivers/media/i2c/imx258.c | 214 ++++++++++++++++++++++++++++++++----- 1 file changed, 190 insertions(+), 24 deletions(-) diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c index e4b1b3cbbde5..8f792f0e0738 100644 --- a/drivers/media/i2c/imx258.c +++ b/drivers/media/i2c/imx258.c @@ -86,12 +86,18 @@ struct imx258_reg_list { const struct imx258_reg *regs; }; +enum { + IMX258_2_LANE_MODE, + IMX258_4_LANE_MODE, + IMX258_LANE_CONFIGS, +}; + /* Link frequency config */ struct imx258_link_freq_config { 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 */ @@ -111,8 +117,34 @@ 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 @ 30 fps needs 1267Mbps/lane, 4 lanes. + * To avoid further computation of clock settings, adopt the same per + * lane data rate when using 2 lanes, thus allowing a maximum of 15fps. + */ +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 }, @@ -126,16 +158,18 @@ 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 }, @@ -146,13 +180,59 @@ 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 }, @@ -166,13 +246,37 @@ 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_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[] = { +static const struct imx258_reg mipi_642mbps_24mhz_4l[] = { { 0x0136, 0x18 }, { 0x0137, 0x00 }, { 0x0301, 0x05 }, @@ -186,6 +290,8 @@ static const struct imx258_reg mipi_642mbps_24mhz[] = { { 0x030E, 0x00 }, { 0x030F, 0xD8 }, { 0x0310, 0x00 }, + + { 0x0114, 0x03 }, { 0x0820, 0x0A }, { 0x0821, 0x00 }, { 0x0822, 0x00 }, @@ -240,7 +346,6 @@ static const struct imx258_reg mode_common_regs[] = { { 0x5F05, 0xED }, { 0x0112, 0x0A }, { 0x0113, 0x0A }, - { 0x0114, 0x03 }, { 0x0342, 0x14 }, { 0x0343, 0xE8 }, { 0x0344, 0x00 }, @@ -359,11 +464,13 @@ 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; @@ -386,15 +493,27 @@ 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, + }, } }, }; @@ -403,15 +522,27 @@ 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, + }, } }, }; @@ -470,6 +601,7 @@ struct imx258 { const struct imx258_link_freq_config *link_freq_configs; const s64 *link_freq_menu_items; + unsigned int nlanes; /* * Mutex for serialized access: @@ -775,7 +907,7 @@ 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 - @@ -804,11 +936,13 @@ 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__); @@ -1026,9 +1160,11 @@ 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, @@ -1125,6 +1261,10 @@ 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; @@ -1165,13 +1305,35 @@ 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) { + dev_err(&client->dev, "Parsing endpoint node failed\n"); + return ret; + } + + /* 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_free; + } + /* 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_free; /* Check module identity */ ret = imx258_identify_module(imx258); @@ -1204,6 +1366,7 @@ 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(&ep); return 0; @@ -1216,6 +1379,9 @@ static int imx258_probe(struct i2c_client *client) error_identify: imx258_power_off(&client->dev); +error_endpoint_free: + v4l2_fwnode_endpoint_free(&ep); + return ret; } -- 2.44.0