diff options
Diffstat (limited to 'drivers/staging/media/hantro/hantro_hw.h')
-rw-r--r-- | drivers/staging/media/hantro/hantro_hw.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/staging/media/hantro/hantro_hw.h b/drivers/staging/media/hantro/hantro_hw.h new file mode 100644 index 000000000000..3c361c2e9b88 --- /dev/null +++ b/drivers/staging/media/hantro/hantro_hw.h @@ -0,0 +1,102 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Hantro VPU codec driver + * + * Copyright 2018 Google LLC. + * Tomasz Figa <tfiga@chromium.org> + */ + +#ifndef HANTRO_HW_H_ +#define HANTRO_HW_H_ + +#include <linux/interrupt.h> +#include <linux/v4l2-controls.h> +#include <media/mpeg2-ctrls.h> +#include <media/videobuf2-core.h> + +struct hantro_dev; +struct hantro_ctx; +struct hantro_buf; +struct hantro_variant; + +/** + * struct hantro_aux_buf - auxiliary DMA buffer for hardware data + * @cpu: CPU pointer to the buffer. + * @dma: DMA address of the buffer. + * @size: Size of the buffer. + */ +struct hantro_aux_buf { + void *cpu; + dma_addr_t dma; + size_t size; +}; + +/** + * struct hantro_jpeg_enc_hw_ctx + * @bounce_buffer: Bounce buffer + */ +struct hantro_jpeg_enc_hw_ctx { + struct hantro_aux_buf bounce_buffer; +}; + +/** + * struct hantro_mpeg2_dec_hw_ctx + * @qtable: Quantization table + */ +struct hantro_mpeg2_dec_hw_ctx { + struct hantro_aux_buf qtable; +}; + +/** + * struct hantro_codec_ops - codec mode specific operations + * + * @init: If needed, can be used for initialization. + * Optional and called from process context. + * @exit: If needed, can be used to undo the .init phase. + * Optional and called from process context. + * @run: Start single {en,de)coding job. Called from atomic context + * to indicate that a pair of buffers is ready and the hardware + * should be programmed and started. + * @done: Read back processing results and additional data from hardware. + * @reset: Reset the hardware in case of a timeout. + */ +struct hantro_codec_ops { + int (*init)(struct hantro_ctx *ctx); + void (*exit)(struct hantro_ctx *ctx); + void (*run)(struct hantro_ctx *ctx); + void (*done)(struct hantro_ctx *ctx, enum vb2_buffer_state); + void (*reset)(struct hantro_ctx *ctx); +}; + +/** + * enum hantro_enc_fmt - source format ID for hardware registers. + */ +enum hantro_enc_fmt { + RK3288_VPU_ENC_FMT_YUV420P = 0, + RK3288_VPU_ENC_FMT_YUV420SP = 1, + RK3288_VPU_ENC_FMT_YUYV422 = 2, + RK3288_VPU_ENC_FMT_UYVY422 = 3, +}; + +extern const struct hantro_variant rk3399_vpu_variant; +extern const struct hantro_variant rk3328_vpu_variant; +extern const struct hantro_variant rk3288_vpu_variant; + +void hantro_watchdog(struct work_struct *work); +void hantro_run(struct hantro_ctx *ctx); +void hantro_irq_done(struct hantro_dev *vpu, unsigned int bytesused, + enum vb2_buffer_state result); + +void hantro_h1_jpeg_enc_run(struct hantro_ctx *ctx); +void rk3399_vpu_jpeg_enc_run(struct hantro_ctx *ctx); +int hantro_jpeg_enc_init(struct hantro_ctx *ctx); +void hantro_jpeg_enc_exit(struct hantro_ctx *ctx); + +void hantro_g1_mpeg2_dec_run(struct hantro_ctx *ctx); +void rk3399_vpu_mpeg2_dec_run(struct hantro_ctx *ctx); +void hantro_mpeg2_dec_copy_qtable(u8 *qtable, + const struct v4l2_ctrl_mpeg2_quantization *ctrl); +int hantro_mpeg2_dec_init(struct hantro_ctx *ctx); +void hantro_mpeg2_dec_exit(struct hantro_ctx *ctx); + +#endif /* HANTRO_HW_H_ */ |