diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-11-07 02:06:06 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-11-07 02:06:06 +0300 |
commit | be3ca57cfb777ad820c6659d52e60bbdd36bf5ff (patch) | |
tree | 2aec9aa9c20d3a82bce9d3df93a049058c3bca4e /drivers/media/platform/cadence/cdns-csi2rx.c | |
parent | d2f51b3516dade79269ff45eae2a7668ae711b25 (diff) | |
parent | 3e238417254bfdcc23fe207780b59cbb08656762 (diff) | |
download | linux-be3ca57cfb777ad820c6659d52e60bbdd36bf5ff.tar.xz |
Merge tag 'media/v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- the old V4L2 core videobuf kAPI was finally removed. All media
drivers should now be using VB2 kAPI
- new automotive driver: mgb4
- new platform video driver: npcm-video
- new sensor driver: mt9m114
- new TI driver used in conjunction with Cadence CSI2RX IP to bridge
TI-specific parts
- ir-rx51 was removed and the N900 DT binding was moved to the
pwm-ir-tx generic driver
- drop atomisp-specific ov5693, using the upstream driver instead
- the camss driver has gained RDI3 support for VFE 17x
- the atomisp driver now detects ISP2400 or ISP2401 at run time. No
need to set it up at build time anymore
- lots of driver fixes, cleanups and improvements
* tag 'media/v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (377 commits)
media: nuvoton: VIDEO_NPCM_VCD_ECE should depend on ARCH_NPCM
media: venus: Fix firmware path for resources
media: venus: hfi_cmds: Replace one-element array with flex-array member and use __counted_by
media: venus: hfi_parser: Add check to keep the number of codecs within range
media: venus: hfi: add checks to handle capabilities from firmware
media: venus: hfi: fix the check to handle session buffer requirement
media: venus: hfi: add checks to perform sanity on queue pointers
media: platform: cadence: select MIPI_DPHY dependency
media: MAINTAINERS: Fix path for J721E CSI2RX bindings
media: cec: meson: always include meson sub-directory in Makefile
media: videobuf2: Fix IS_ERR checking in vb2_dc_put_userptr()
media: platform: mtk-mdp3: fix uninitialized variable in mdp_path_config()
media: mediatek: vcodec: using encoder device to alloc/free encoder memory
media: imx-jpeg: notify source chagne event when the first picture parsed
media: cx231xx: Use EP5_BUF_SIZE macro
media: siano: Drop unnecessary error check for debugfs_create_dir/file()
media: mediatek: vcodec: Handle invalid encoder vsi
media: aspeed: Drop unnecessary error check for debugfs_create_file()
Documentation: media: buffer.rst: fix V4L2_BUF_FLAG_PREPARED
Documentation: media: gen-errors.rst: fix confusing ENOTTY description
...
Diffstat (limited to 'drivers/media/platform/cadence/cdns-csi2rx.c')
-rw-r--r-- | drivers/media/platform/cadence/cdns-csi2rx.c | 180 |
1 files changed, 171 insertions, 9 deletions
diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c index 0d879d71d818..889f4fbbafb3 100644 --- a/drivers/media/platform/cadence/cdns-csi2rx.c +++ b/drivers/media/platform/cadence/cdns-csi2rx.c @@ -8,6 +8,7 @@ #include <linux/clk.h> #include <linux/delay.h> #include <linux/io.h> +#include <linux/iopoll.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_graph.h> @@ -40,10 +41,14 @@ #define CSI2RX_STREAM_BASE(n) (((n) + 1) * 0x100) #define CSI2RX_STREAM_CTRL_REG(n) (CSI2RX_STREAM_BASE(n) + 0x000) +#define CSI2RX_STREAM_CTRL_SOFT_RST BIT(4) +#define CSI2RX_STREAM_CTRL_STOP BIT(1) #define CSI2RX_STREAM_CTRL_START BIT(0) +#define CSI2RX_STREAM_STATUS_REG(n) (CSI2RX_STREAM_BASE(n) + 0x004) +#define CSI2RX_STREAM_STATUS_RDY BIT(31) + #define CSI2RX_STREAM_DATA_CFG_REG(n) (CSI2RX_STREAM_BASE(n) + 0x008) -#define CSI2RX_STREAM_DATA_CFG_EN_VC_SELECT BIT(31) #define CSI2RX_STREAM_DATA_CFG_VC_SELECT(n) BIT((n) + 16) #define CSI2RX_STREAM_CFG_REG(n) (CSI2RX_STREAM_BASE(n) + 0x00c) @@ -61,6 +66,11 @@ enum csi2rx_pads { CSI2RX_PAD_MAX, }; +struct csi2rx_fmt { + u32 code; + u8 bpp; +}; + struct csi2rx_priv { struct device *dev; unsigned int count; @@ -95,6 +105,32 @@ struct csi2rx_priv { int source_pad; }; +static const struct csi2rx_fmt formats[] = { + { .code = MEDIA_BUS_FMT_YUYV8_1X16, .bpp = 16, }, + { .code = MEDIA_BUS_FMT_UYVY8_1X16, .bpp = 16, }, + { .code = MEDIA_BUS_FMT_YVYU8_1X16, .bpp = 16, }, + { .code = MEDIA_BUS_FMT_VYUY8_1X16, .bpp = 16, }, + { .code = MEDIA_BUS_FMT_SBGGR8_1X8, .bpp = 8, }, + { .code = MEDIA_BUS_FMT_SGBRG8_1X8, .bpp = 8, }, + { .code = MEDIA_BUS_FMT_SGRBG8_1X8, .bpp = 8, }, + { .code = MEDIA_BUS_FMT_SRGGB8_1X8, .bpp = 8, }, + { .code = MEDIA_BUS_FMT_SBGGR10_1X10, .bpp = 10, }, + { .code = MEDIA_BUS_FMT_SGBRG10_1X10, .bpp = 10, }, + { .code = MEDIA_BUS_FMT_SGRBG10_1X10, .bpp = 10, }, + { .code = MEDIA_BUS_FMT_SRGGB10_1X10, .bpp = 10, }, +}; + +static const struct csi2rx_fmt *csi2rx_get_fmt_by_code(u32 code) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(formats); i++) + if (formats[i].code == code) + return &formats[i]; + + return NULL; +} + static inline struct csi2rx_priv *v4l2_subdev_to_csi2rx(struct v4l2_subdev *subdev) { @@ -103,19 +139,54 @@ struct csi2rx_priv *v4l2_subdev_to_csi2rx(struct v4l2_subdev *subdev) static void csi2rx_reset(struct csi2rx_priv *csi2rx) { + unsigned int i; + + /* Reset module */ writel(CSI2RX_SOFT_RESET_PROTOCOL | CSI2RX_SOFT_RESET_FRONT, csi2rx->base + CSI2RX_SOFT_RESET_REG); + /* Reset individual streams. */ + for (i = 0; i < csi2rx->max_streams; i++) { + writel(CSI2RX_STREAM_CTRL_SOFT_RST, + csi2rx->base + CSI2RX_STREAM_CTRL_REG(i)); + } - udelay(10); + usleep_range(10, 20); + /* Clear resets */ writel(0, csi2rx->base + CSI2RX_SOFT_RESET_REG); + for (i = 0; i < csi2rx->max_streams; i++) + writel(0, csi2rx->base + CSI2RX_STREAM_CTRL_REG(i)); } static int csi2rx_configure_ext_dphy(struct csi2rx_priv *csi2rx) { union phy_configure_opts opts = { }; + struct phy_configure_opts_mipi_dphy *cfg = &opts.mipi_dphy; + struct v4l2_subdev_format sd_fmt = { + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + .pad = CSI2RX_PAD_SINK, + }; + const struct csi2rx_fmt *fmt; + s64 link_freq; int ret; + ret = v4l2_subdev_call_state_active(&csi2rx->subdev, pad, get_fmt, + &sd_fmt); + if (ret < 0) + return ret; + + fmt = csi2rx_get_fmt_by_code(sd_fmt.format.code); + + link_freq = v4l2_get_link_freq(csi2rx->source_subdev->ctrl_handler, + fmt->bpp, 2 * csi2rx->num_lanes); + if (link_freq < 0) + return link_freq; + + ret = phy_mipi_dphy_get_default_config_for_hsclk(link_freq, + csi2rx->num_lanes, cfg); + if (ret) + return ret; + ret = phy_power_on(csi2rx->dphy); if (ret) return ret; @@ -199,8 +270,11 @@ static int csi2rx_start(struct csi2rx_priv *csi2rx) writel(CSI2RX_STREAM_CFG_FIFO_MODE_LARGE_BUF, csi2rx->base + CSI2RX_STREAM_CFG_REG(i)); - writel(CSI2RX_STREAM_DATA_CFG_EN_VC_SELECT | - CSI2RX_STREAM_DATA_CFG_VC_SELECT(i), + /* + * Enable one virtual channel. When multiple virtual channels + * are supported this will have to be changed. + */ + writel(CSI2RX_STREAM_DATA_CFG_VC_SELECT(0), csi2rx->base + CSI2RX_STREAM_DATA_CFG_REG(i)); writel(CSI2RX_STREAM_CTRL_START, @@ -243,13 +317,25 @@ err_disable_pclk: static void csi2rx_stop(struct csi2rx_priv *csi2rx) { unsigned int i; + u32 val; + int ret; clk_prepare_enable(csi2rx->p_clk); reset_control_assert(csi2rx->sys_rst); clk_disable_unprepare(csi2rx->sys_clk); for (i = 0; i < csi2rx->max_streams; i++) { - writel(0, csi2rx->base + CSI2RX_STREAM_CTRL_REG(i)); + writel(CSI2RX_STREAM_CTRL_STOP, + csi2rx->base + CSI2RX_STREAM_CTRL_REG(i)); + + ret = readl_relaxed_poll_timeout(csi2rx->base + + CSI2RX_STREAM_STATUS_REG(i), + val, + !(val & CSI2RX_STREAM_STATUS_RDY), + 10, 10000); + if (ret) + dev_warn(csi2rx->dev, + "Failed to stop streaming on pad%u\n", i); reset_control_assert(csi2rx->pixel_rst[i]); clk_disable_unprepare(csi2rx->pixel_clk[i]); @@ -303,12 +389,72 @@ out: return ret; } +static int csi2rx_set_fmt(struct v4l2_subdev *subdev, + struct v4l2_subdev_state *state, + struct v4l2_subdev_format *format) +{ + struct v4l2_mbus_framefmt *fmt; + unsigned int i; + + /* No transcoding, source and sink formats must match. */ + if (format->pad != CSI2RX_PAD_SINK) + return v4l2_subdev_get_fmt(subdev, state, format); + + if (!csi2rx_get_fmt_by_code(format->format.code)) + format->format.code = formats[0].code; + + format->format.field = V4L2_FIELD_NONE; + + /* Set sink format */ + fmt = v4l2_subdev_get_pad_format(subdev, state, format->pad); + *fmt = format->format; + + /* Propagate to source formats */ + for (i = CSI2RX_PAD_SOURCE_STREAM0; i < CSI2RX_PAD_MAX; i++) { + fmt = v4l2_subdev_get_pad_format(subdev, state, i); + *fmt = format->format; + } + + return 0; +} + +static int csi2rx_init_cfg(struct v4l2_subdev *subdev, + struct v4l2_subdev_state *state) +{ + struct v4l2_subdev_format format = { + .pad = CSI2RX_PAD_SINK, + .format = { + .width = 640, + .height = 480, + .code = MEDIA_BUS_FMT_UYVY8_1X16, + .field = V4L2_FIELD_NONE, + .colorspace = V4L2_COLORSPACE_SRGB, + .ycbcr_enc = V4L2_YCBCR_ENC_601, + .quantization = V4L2_QUANTIZATION_LIM_RANGE, + .xfer_func = V4L2_XFER_FUNC_SRGB, + }, + }; + + return csi2rx_set_fmt(subdev, state, &format); +} + +static const struct v4l2_subdev_pad_ops csi2rx_pad_ops = { + .get_fmt = v4l2_subdev_get_fmt, + .set_fmt = csi2rx_set_fmt, + .init_cfg = csi2rx_init_cfg, +}; + static const struct v4l2_subdev_video_ops csi2rx_video_ops = { .s_stream = csi2rx_s_stream, }; static const struct v4l2_subdev_ops csi2rx_subdev_ops = { .video = &csi2rx_video_ops, + .pad = &csi2rx_pad_ops, +}; + +static const struct media_entity_operations csi2rx_media_ops = { + .link_validate = v4l2_subdev_link_validate, }; static int csi2rx_async_bound(struct v4l2_async_notifier *notifier, @@ -479,8 +625,10 @@ static int csi2rx_parse_dt(struct csi2rx_priv *csi2rx) asd = v4l2_async_nf_add_fwnode_remote(&csi2rx->notifier, fwh, struct v4l2_async_connection); of_node_put(ep); - if (IS_ERR(asd)) + if (IS_ERR(asd)) { + v4l2_async_nf_cleanup(&csi2rx->notifier); return PTR_ERR(asd); + } csi2rx->notifier.ops = &csi2rx_notifier_ops; @@ -516,23 +664,29 @@ static int csi2rx_probe(struct platform_device *pdev) csi2rx->subdev.dev = &pdev->dev; v4l2_subdev_init(&csi2rx->subdev, &csi2rx_subdev_ops); v4l2_set_subdevdata(&csi2rx->subdev, &pdev->dev); - snprintf(csi2rx->subdev.name, V4L2_SUBDEV_NAME_SIZE, "%s.%s", - KBUILD_MODNAME, dev_name(&pdev->dev)); + snprintf(csi2rx->subdev.name, sizeof(csi2rx->subdev.name), + "%s.%s", KBUILD_MODNAME, dev_name(&pdev->dev)); /* Create our media pads */ csi2rx->subdev.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE; csi2rx->pads[CSI2RX_PAD_SINK].flags = MEDIA_PAD_FL_SINK; for (i = CSI2RX_PAD_SOURCE_STREAM0; i < CSI2RX_PAD_MAX; i++) csi2rx->pads[i].flags = MEDIA_PAD_FL_SOURCE; + csi2rx->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + csi2rx->subdev.entity.ops = &csi2rx_media_ops; ret = media_entity_pads_init(&csi2rx->subdev.entity, CSI2RX_PAD_MAX, csi2rx->pads); if (ret) goto err_cleanup; + ret = v4l2_subdev_init_finalize(&csi2rx->subdev); + if (ret) + goto err_cleanup; + ret = v4l2_async_register_subdev(&csi2rx->subdev); if (ret < 0) - goto err_cleanup; + goto err_free_state; dev_info(&pdev->dev, "Probed CSI2RX with %u/%u lanes, %u streams, %s D-PHY\n", @@ -542,8 +696,12 @@ static int csi2rx_probe(struct platform_device *pdev) return 0; +err_free_state: + v4l2_subdev_cleanup(&csi2rx->subdev); err_cleanup: + v4l2_async_nf_unregister(&csi2rx->notifier); v4l2_async_nf_cleanup(&csi2rx->notifier); + media_entity_cleanup(&csi2rx->subdev.entity); err_free_priv: kfree(csi2rx); return ret; @@ -553,7 +711,11 @@ static void csi2rx_remove(struct platform_device *pdev) { struct csi2rx_priv *csi2rx = platform_get_drvdata(pdev); + v4l2_async_nf_unregister(&csi2rx->notifier); + v4l2_async_nf_cleanup(&csi2rx->notifier); v4l2_async_unregister_subdev(&csi2rx->subdev); + v4l2_subdev_cleanup(&csi2rx->subdev); + media_entity_cleanup(&csi2rx->subdev.entity); kfree(csi2rx); } |