diff options
Diffstat (limited to 'drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h')
| -rw-r--r-- | drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h new file mode 100644 index 000000000000..e469788a9e6c --- /dev/null +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h @@ -0,0 +1,394 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * V4L2 Capture ISI subdev for i.MX8QXP/QM platform + * + * ISI is a Image Sensor Interface of i.MX8QXP/QM platform, which + * used to process image from camera sensor to memory or DC + * Copyright 2019-2020 NXP + */ + +#ifndef __MXC_ISI_CORE_H__ +#define __MXC_ISI_CORE_H__ + +#include <linux/list.h> +#include <linux/mutex.h> +#include <linux/spinlock.h> +#include <linux/types.h> +#include <linux/videodev2.h> + +#include <media/media-device.h> +#include <media/media-entity.h> +#include <media/v4l2-async.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-device.h> +#include <media/v4l2-subdev.h> +#include <media/videobuf2-core.h> +#include <media/videobuf2-v4l2.h> + +struct clk_bulk_data; +struct dentry; +struct device; +struct media_intf_devnode; +struct regmap; +struct v4l2_m2m_dev; + +/* Pipeline pads */ +#define MXC_ISI_PIPE_PAD_SINK 0 +#define MXC_ISI_PIPE_PAD_SOURCE 1 +#define MXC_ISI_PIPE_PADS_NUM 2 + +#define MXC_ISI_MIN_WIDTH 1U +#define MXC_ISI_MIN_HEIGHT 1U +#define MXC_ISI_MAX_WIDTH_UNCHAINED 2048U +#define MXC_ISI_MAX_WIDTH_CHAINED 4096U +#define MXC_ISI_MAX_HEIGHT 8191U + +#define MXC_ISI_DEF_WIDTH 1920U +#define MXC_ISI_DEF_HEIGHT 1080U +#define MXC_ISI_DEF_MBUS_CODE_SINK MEDIA_BUS_FMT_UYVY8_1X16 +#define MXC_ISI_DEF_MBUS_CODE_SOURCE MEDIA_BUS_FMT_YUV8_1X24 +#define MXC_ISI_DEF_PIXEL_FORMAT V4L2_PIX_FMT_YUYV +#define MXC_ISI_DEF_COLOR_SPACE V4L2_COLORSPACE_SRGB +#define MXC_ISI_DEF_YCBCR_ENC V4L2_YCBCR_ENC_601 +#define MXC_ISI_DEF_QUANTIZATION V4L2_QUANTIZATION_LIM_RANGE +#define MXC_ISI_DEF_XFER_FUNC V4L2_XFER_FUNC_SRGB + +#define MXC_ISI_DRIVER_NAME "mxc-isi" +#define MXC_ISI_CAPTURE "mxc-isi-cap" +#define MXC_ISI_M2M "mxc-isi-m2m" +#define MXC_MAX_PLANES 3 + +struct mxc_isi_dev; +struct mxc_isi_m2m_ctx; + +enum mxc_isi_buf_id { + MXC_ISI_BUF1 = 0x0, + MXC_ISI_BUF2, +}; + +enum mxc_isi_encoding { + MXC_ISI_ENC_RAW, + MXC_ISI_ENC_RGB, + MXC_ISI_ENC_YUV, +}; + +enum mxc_isi_input_id { + /* Inputs from the crossbar switch range from 0 to 15 */ + MXC_ISI_INPUT_MEM = 16, +}; + +enum mxc_isi_video_type { + MXC_ISI_VIDEO_CAP = BIT(0), + MXC_ISI_VIDEO_M2M_OUT = BIT(1), + MXC_ISI_VIDEO_M2M_CAP = BIT(2), +}; + +struct mxc_isi_format_info { + u32 mbus_code; + u32 fourcc; + enum mxc_isi_video_type type; + u32 isi_in_format; + u32 isi_out_format; + u8 mem_planes; + u8 color_planes; + u8 depth[MXC_MAX_PLANES]; + u8 hsub; + u8 vsub; + enum mxc_isi_encoding encoding; +}; + +struct mxc_isi_bus_format_info { + u32 mbus_code; + u32 output; + u32 pads; + enum mxc_isi_encoding encoding; +}; + +struct mxc_isi_buffer { + struct vb2_v4l2_buffer v4l2_buf; + struct list_head list; + dma_addr_t dma_addrs[3]; + enum mxc_isi_buf_id id; + bool discard; +}; + +struct mxc_isi_reg { + u32 offset; + u32 mask; +}; + +struct mxc_isi_ier_reg { + /* Overflow Y/U/V trigger enable*/ + struct mxc_isi_reg oflw_y_buf_en; + struct mxc_isi_reg oflw_u_buf_en; + struct mxc_isi_reg oflw_v_buf_en; + + /* Excess overflow Y/U/V trigger enable*/ + struct mxc_isi_reg excs_oflw_y_buf_en; + struct mxc_isi_reg excs_oflw_u_buf_en; + struct mxc_isi_reg excs_oflw_v_buf_en; + + /* Panic Y/U/V trigger enable*/ + struct mxc_isi_reg panic_y_buf_en; + struct mxc_isi_reg panic_v_buf_en; + struct mxc_isi_reg panic_u_buf_en; +}; + +struct mxc_isi_panic_thd { + u32 mask; + u32 offset; + u32 threshold; +}; + +struct mxc_isi_set_thd { + struct mxc_isi_panic_thd panic_set_thd_y; + struct mxc_isi_panic_thd panic_set_thd_u; + struct mxc_isi_panic_thd panic_set_thd_v; +}; + +enum model { + MXC_ISI_IMX8MN, + MXC_ISI_IMX8MP, +}; + +struct mxc_isi_plat_data { + enum model model; + unsigned int num_ports; + unsigned int num_channels; + unsigned int reg_offset; + const struct mxc_isi_ier_reg *ier_reg; + const struct mxc_isi_set_thd *set_thd; + const struct clk_bulk_data *clks; + unsigned int num_clks; + bool buf_active_reverse; + bool has_gasket; + bool has_36bit_dma; +}; + +struct mxc_isi_dma_buffer { + size_t size; + void *addr; + dma_addr_t dma; +}; + +struct mxc_isi_input { + unsigned int enable_count; +}; + +struct mxc_isi_crossbar { + struct mxc_isi_dev *isi; + + unsigned int num_sinks; + unsigned int num_sources; + struct mxc_isi_input *inputs; + + struct v4l2_subdev sd; + struct media_pad *pads; +}; + +struct mxc_isi_video { + struct mxc_isi_pipe *pipe; + + struct video_device vdev; + struct media_pad pad; + + /* Protects is_streaming, and the vdev and vb2_q operations */ + struct mutex lock; + bool is_streaming; + + struct v4l2_pix_format_mplane pix; + const struct mxc_isi_format_info *fmtinfo; + + struct { + struct v4l2_ctrl_handler handler; + unsigned int alpha; + bool hflip; + bool vflip; + } ctrls; + + struct vb2_queue vb2_q; + struct mxc_isi_buffer buf_discard[3]; + struct list_head out_pending; + struct list_head out_active; + struct list_head out_discard; + u32 frame_count; + /* Protects out_pending, out_active, out_discard and frame_count */ + spinlock_t buf_lock; + + struct mxc_isi_dma_buffer discard_buffer[MXC_MAX_PLANES]; +}; + +typedef void(*mxc_isi_pipe_irq_t)(struct mxc_isi_pipe *, u32); + +struct mxc_isi_pipe { + struct mxc_isi_dev *isi; + u32 id; + void __iomem *regs; + + struct media_pipeline pipe; + + struct v4l2_subdev sd; + struct media_pad pads[MXC_ISI_PIPE_PADS_NUM]; + + struct mxc_isi_video video; + + /* + * Protects use_count, irq_handler, res_available, res_acquired, + * chained_res, and the CHNL_CTRL register. + */ + struct mutex lock; + unsigned int use_count; + mxc_isi_pipe_irq_t irq_handler; + +#define MXC_ISI_CHANNEL_RES_LINE_BUF BIT(0) +#define MXC_ISI_CHANNEL_RES_OUTPUT_BUF BIT(1) + u8 available_res; + u8 acquired_res; + u8 chained_res; + bool chained; +}; + +struct mxc_isi_m2m { + struct mxc_isi_dev *isi; + struct mxc_isi_pipe *pipe; + + struct media_pad pad; + struct video_device vdev; + struct media_intf_devnode *intf; + struct v4l2_m2m_dev *m2m_dev; + + /* Protects last_ctx, usage_count and chained_count */ + struct mutex lock; + + struct mxc_isi_m2m_ctx *last_ctx; + int usage_count; + int chained_count; +}; + +struct mxc_isi_dev { + struct device *dev; + + const struct mxc_isi_plat_data *pdata; + + void __iomem *regs; + struct clk_bulk_data *clks; + struct regmap *gasket; + + struct mxc_isi_crossbar crossbar; + struct mxc_isi_pipe *pipes; + struct mxc_isi_m2m m2m; + + struct media_device media_dev; + struct v4l2_device v4l2_dev; + struct v4l2_async_notifier notifier; + + struct dentry *debugfs_root; +}; + +int mxc_isi_crossbar_init(struct mxc_isi_dev *isi); +void mxc_isi_crossbar_cleanup(struct mxc_isi_crossbar *xbar); +int mxc_isi_crossbar_register(struct mxc_isi_crossbar *xbar); +void mxc_isi_crossbar_unregister(struct mxc_isi_crossbar *xbar); + +const struct mxc_isi_bus_format_info * +mxc_isi_bus_format_by_code(u32 code, unsigned int pad); +const struct mxc_isi_bus_format_info * +mxc_isi_bus_format_by_index(unsigned int index, unsigned int pad); +const struct mxc_isi_format_info * +mxc_isi_format_by_fourcc(u32 fourcc, enum mxc_isi_video_type type); +const struct mxc_isi_format_info * +mxc_isi_format_enum(unsigned int index, enum mxc_isi_video_type type); +const struct mxc_isi_format_info * +mxc_isi_format_try(struct mxc_isi_pipe *pipe, struct v4l2_pix_format_mplane *pix, + enum mxc_isi_video_type type); + +int mxc_isi_pipe_init(struct mxc_isi_dev *isi, unsigned int id); +void mxc_isi_pipe_cleanup(struct mxc_isi_pipe *pipe); +int mxc_isi_pipe_acquire(struct mxc_isi_pipe *pipe, + mxc_isi_pipe_irq_t irq_handler); +void mxc_isi_pipe_release(struct mxc_isi_pipe *pipe); +int mxc_isi_pipe_enable(struct mxc_isi_pipe *pipe); +void mxc_isi_pipe_disable(struct mxc_isi_pipe *pipe); + +int mxc_isi_video_register(struct mxc_isi_pipe *pipe, + struct v4l2_device *v4l2_dev); +void mxc_isi_video_unregister(struct mxc_isi_pipe *pipe); +void mxc_isi_video_suspend(struct mxc_isi_pipe *pipe); +int mxc_isi_video_resume(struct mxc_isi_pipe *pipe); +int mxc_isi_video_queue_setup(const struct v4l2_pix_format_mplane *format, + const struct mxc_isi_format_info *info, + unsigned int *num_buffers, + unsigned int *num_planes, unsigned int sizes[]); +void mxc_isi_video_buffer_init(struct vb2_buffer *vb2, dma_addr_t dma_addrs[3], + const struct mxc_isi_format_info *info, + const struct v4l2_pix_format_mplane *pix); +int mxc_isi_video_buffer_prepare(struct mxc_isi_dev *isi, struct vb2_buffer *vb2, + const struct mxc_isi_format_info *info, + const struct v4l2_pix_format_mplane *pix); + +#ifdef CONFIG_VIDEO_IMX8_ISI_M2M +int mxc_isi_m2m_register(struct mxc_isi_dev *isi, struct v4l2_device *v4l2_dev); +int mxc_isi_m2m_unregister(struct mxc_isi_dev *isi); +#else +static inline int mxc_isi_m2m_register(struct mxc_isi_dev *isi, + struct v4l2_device *v4l2_dev) +{ + return 0; +} +static inline int mxc_isi_m2m_unregister(struct mxc_isi_dev *isi) +{ + return 0; +} +#endif + +int mxc_isi_channel_acquire(struct mxc_isi_pipe *pipe, + mxc_isi_pipe_irq_t irq_handler, bool bypass); +void mxc_isi_channel_release(struct mxc_isi_pipe *pipe); +void mxc_isi_channel_get(struct mxc_isi_pipe *pipe); +void mxc_isi_channel_put(struct mxc_isi_pipe *pipe); +void mxc_isi_channel_enable(struct mxc_isi_pipe *pipe); +void mxc_isi_channel_disable(struct mxc_isi_pipe *pipe); +int mxc_isi_channel_chain(struct mxc_isi_pipe *pipe, bool bypass); +void mxc_isi_channel_unchain(struct mxc_isi_pipe *pipe); + +void mxc_isi_channel_config(struct mxc_isi_pipe *pipe, + enum mxc_isi_input_id input, + const struct v4l2_area *in_size, + const struct v4l2_area *scale, + const struct v4l2_rect *crop, + enum mxc_isi_encoding in_encoding, + enum mxc_isi_encoding out_encoding); + +void mxc_isi_channel_set_input_format(struct mxc_isi_pipe *pipe, + const struct mxc_isi_format_info *info, + const struct v4l2_pix_format_mplane *format); +void mxc_isi_channel_set_output_format(struct mxc_isi_pipe *pipe, + const struct mxc_isi_format_info *info, + struct v4l2_pix_format_mplane *format); +void mxc_isi_channel_m2m_start(struct mxc_isi_pipe *pipe); + +void mxc_isi_channel_set_alpha(struct mxc_isi_pipe *pipe, u8 alpha); +void mxc_isi_channel_set_flip(struct mxc_isi_pipe *pipe, bool hflip, bool vflip); + +void mxc_isi_channel_set_inbuf(struct mxc_isi_pipe *pipe, dma_addr_t dma_addr); +void mxc_isi_channel_set_outbuf(struct mxc_isi_pipe *pipe, + const dma_addr_t dma_addrs[3], + enum mxc_isi_buf_id buf_id); + +u32 mxc_isi_channel_irq_status(struct mxc_isi_pipe *pipe, bool clear); +void mxc_isi_channel_irq_clear(struct mxc_isi_pipe *pipe); + +#if IS_ENABLED(CONFIG_DEBUG_FS) +void mxc_isi_debug_init(struct mxc_isi_dev *isi); +void mxc_isi_debug_cleanup(struct mxc_isi_dev *isi); +#else +static inline void mxc_isi_debug_init(struct mxc_isi_dev *isi) +{ +} +static inline void mxc_isi_debug_cleanup(struct mxc_isi_dev *isi) +{ +} +#endif + +#endif /* __MXC_ISI_CORE_H__ */ |