| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Edward A. James | 8439 | 100.00% | 1 | 100.00% |
| Total | 8439 | 1 |
// SPDX-License-Identifier: GPL-2.0+ #include <linux/atomic.h> #include <linux/bitfield.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/jiffies.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/of.h> #include <linux/of_irq.h> #include <linux/of_reserved_mem.h> #include <linux/platform_device.h> #include <linux/reset.h> #include <linux/sched.h> #include <linux/spinlock.h> #include <linux/string.h> #include <linux/v4l2-controls.h> #include <linux/videodev2.h> #include <linux/wait.h> #include <linux/workqueue.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-dev.h> #include <media/v4l2-device.h> #include <media/v4l2-dv-timings.h> #include <media/v4l2-event.h> #include <media/v4l2-ioctl.h> #include <media/videobuf2-dma-contig.h> #define DEVICE_NAME "aspeed-video" #define ASPEED_VIDEO_JPEG_NUM_QUALITIES 12 #define ASPEED_VIDEO_JPEG_HEADER_SIZE 10 #define ASPEED_VIDEO_JPEG_QUANT_SIZE 116 #define ASPEED_VIDEO_JPEG_DCT_SIZE 34 #define MAX_FRAME_RATE 60 #define MAX_HEIGHT 1200 #define MAX_WIDTH 1920 #define MIN_HEIGHT 480 #define MIN_WIDTH 640 #define NUM_POLARITY_CHECKS 10 #define INVALID_RESOLUTION_RETRIES 2 #define INVALID_RESOLUTION_DELAY msecs_to_jiffies(250) #define RESOLUTION_CHANGE_DELAY msecs_to_jiffies(500) #define MODE_DETECT_TIMEOUT msecs_to_jiffies(500) #define STOP_TIMEOUT msecs_to_jiffies(1000) #define DIRECT_FETCH_THRESHOLD 0x0c0000 /* 1024 * 768 */ #define VE_MAX_SRC_BUFFER_SIZE 0x8ca000 /* 1920 * 1200, 32bpp */ #define VE_JPEG_HEADER_SIZE 0x006000 /* 512 * 12 * 4 */ #define VE_PROTECTION_KEY 0x000 #define VE_PROTECTION_KEY_UNLOCK 0x1a038aa8 #define VE_SEQ_CTRL 0x004 #define VE_SEQ_CTRL_TRIG_MODE_DET BIT(0) #define VE_SEQ_CTRL_TRIG_CAPTURE BIT(1) #define VE_SEQ_CTRL_FORCE_IDLE BIT(2) #define VE_SEQ_CTRL_MULT_FRAME BIT(3) #define VE_SEQ_CTRL_TRIG_COMP BIT(4) #define VE_SEQ_CTRL_AUTO_COMP BIT(5) #define VE_SEQ_CTRL_EN_WATCHDOG BIT(7) #define VE_SEQ_CTRL_YUV420 BIT(10) #define VE_SEQ_CTRL_COMP_FMT GENMASK(11, 10) #define VE_SEQ_CTRL_HALT BIT(12) #define VE_SEQ_CTRL_EN_WATCHDOG_COMP BIT(14) #define VE_SEQ_CTRL_TRIG_JPG BIT(15) #define VE_SEQ_CTRL_CAP_BUSY BIT(16) #define VE_SEQ_CTRL_COMP_BUSY BIT(18) #ifdef CONFIG_MACH_ASPEED_G5 #define VE_SEQ_CTRL_JPEG_MODE BIT(13) /* AST2500 */ #else #define VE_SEQ_CTRL_JPEG_MODE BIT(8) /* AST2400 */ #endif /* CONFIG_MACH_ASPEED_G5 */ #define VE_CTRL 0x008 #define VE_CTRL_HSYNC_POL BIT(0) #define VE_CTRL_VSYNC_POL BIT(1) #define VE_CTRL_SOURCE BIT(2) #define VE_CTRL_INT_DE BIT(4) #define VE_CTRL_DIRECT_FETCH BIT(5) #define VE_CTRL_YUV BIT(6) #define VE_CTRL_RGB BIT(7) #define VE_CTRL_CAPTURE_FMT GENMASK(7, 6) #define VE_CTRL_AUTO_OR_CURSOR BIT(8) #define VE_CTRL_CLK_INVERSE BIT(11) #define VE_CTRL_CLK_DELAY GENMASK(11, 9) #define VE_CTRL_INTERLACE BIT(14) #define VE_CTRL_HSYNC_POL_CTRL BIT(15) #define VE_CTRL_FRC GENMASK(23, 16) #define VE_TGS_0 0x00c #define VE_TGS_1 0x010 #define VE_TGS_FIRST GENMASK(28, 16) #define VE_TGS_LAST GENMASK(12, 0) #define VE_SCALING_FACTOR 0x014 #define VE_SCALING_FILTER0 0x018 #define VE_SCALING_FILTER1 0x01c #define VE_SCALING_FILTER2 0x020 #define VE_SCALING_FILTER3 0x024 #define VE_CAP_WINDOW 0x030 #define VE_COMP_WINDOW 0x034 #define VE_COMP_PROC_OFFSET 0x038 #define VE_COMP_OFFSET 0x03c #define VE_JPEG_ADDR 0x040 #define VE_SRC0_ADDR 0x044 #define VE_SRC_SCANLINE_OFFSET 0x048 #define VE_SRC1_ADDR 0x04c #define VE_COMP_ADDR 0x054 #define VE_STREAM_BUF_SIZE 0x058 #define VE_STREAM_BUF_SIZE_N_PACKETS GENMASK(5, 3) #define VE_STREAM_BUF_SIZE_P_SIZE GENMASK(2, 0) #define VE_COMP_CTRL 0x060 #define VE_COMP_CTRL_VQ_DCT_ONLY BIT(0) #define VE_COMP_CTRL_VQ_4COLOR BIT(1) #define VE_COMP_CTRL_QUANTIZE BIT(2) #define VE_COMP_CTRL_EN_BQ BIT(4) #define VE_COMP_CTRL_EN_CRYPTO BIT(5) #define VE_COMP_CTRL_DCT_CHR GENMASK(10, 6) #define VE_COMP_CTRL_DCT_LUM GENMASK(15, 11) #define VE_COMP_CTRL_EN_HQ BIT(16) #define VE_COMP_CTRL_RSVD BIT(19) #define VE_COMP_CTRL_ENCODE GENMASK(21, 20) #define VE_COMP_CTRL_HQ_DCT_CHR GENMASK(26, 22) #define VE_COMP_CTRL_HQ_DCT_LUM GENMASK(31, 27) #define VE_OFFSET_COMP_STREAM 0x078 #define VE_SRC_LR_EDGE_DET 0x090 #define VE_SRC_LR_EDGE_DET_LEFT GENMASK(11, 0) #define VE_SRC_LR_EDGE_DET_NO_V BIT(12) #define VE_SRC_LR_EDGE_DET_NO_H BIT(13) #define VE_SRC_LR_EDGE_DET_NO_DISP BIT(14) #define VE_SRC_LR_EDGE_DET_NO_CLK BIT(15) #define VE_SRC_LR_EDGE_DET_RT_SHF 16 #define VE_SRC_LR_EDGE_DET_RT GENMASK(27, VE_SRC_LR_EDGE_DET_RT_SHF) #define VE_SRC_LR_EDGE_DET_INTERLACE BIT(31) #define VE_SRC_TB_EDGE_DET 0x094 #define VE_SRC_TB_EDGE_DET_TOP GENMASK(12, 0) #define VE_SRC_TB_EDGE_DET_BOT_SHF 16 #define VE_SRC_TB_EDGE_DET_BOT GENMASK(28, VE_SRC_TB_EDGE_DET_BOT_SHF) #define VE_MODE_DETECT_STATUS 0x098 #define VE_MODE_DETECT_H_PIXELS GENMASK(11, 0) #define VE_MODE_DETECT_V_LINES_SHF 16 #define VE_MODE_DETECT_V_LINES GENMASK(27, VE_MODE_DETECT_V_LINES_SHF) #define VE_MODE_DETECT_STATUS_VSYNC BIT(28) #define VE_MODE_DETECT_STATUS_HSYNC BIT(29) #define VE_SYNC_STATUS 0x09c #define VE_SYNC_STATUS_HSYNC GENMASK(11, 0) #define VE_SYNC_STATUS_VSYNC_SHF 16 #define VE_SYNC_STATUS_VSYNC GENMASK(27, VE_SYNC_STATUS_VSYNC_SHF) #define VE_INTERRUPT_CTRL 0x304 #define VE_INTERRUPT_STATUS 0x308 #define VE_INTERRUPT_MODE_DETECT_WD BIT(0) #define VE_INTERRUPT_CAPTURE_COMPLETE BIT(1) #define VE_INTERRUPT_COMP_READY BIT(2) #define VE_INTERRUPT_COMP_COMPLETE BIT(3) #define VE_INTERRUPT_MODE_DETECT BIT(4) #define VE_INTERRUPT_FRAME_COMPLETE BIT(5) #define VE_INTERRUPT_DECODE_ERR BIT(6) #define VE_INTERRUPT_HALT_READY BIT(8) #define VE_INTERRUPT_HANG_WD BIT(9) #define VE_INTERRUPT_STREAM_DESC BIT(10) #define VE_INTERRUPT_VSYNC_DESC BIT(11) #define VE_MODE_DETECT 0x30c #define VE_MEM_RESTRICT_START 0x310 #define VE_MEM_RESTRICT_END 0x314 enum { VIDEO_MODE_DETECT_DONE, VIDEO_RES_CHANGE, VIDEO_RES_DETECT, VIDEO_STREAMING, VIDEO_FRAME_INPRG, VIDEO_STOPPED, }; struct aspeed_video_addr { unsigned int size; dma_addr_t dma; void *virt; }; struct aspeed_video_buffer { struct vb2_v4l2_buffer vb; struct list_head link; }; #define to_aspeed_video_buffer(x) \ container_of((x), struct aspeed_video_buffer, vb) struct aspeed_video { void __iomem *base; struct clk *eclk; struct clk *vclk; struct reset_control *rst; struct device *dev; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_device v4l2_dev; struct v4l2_pix_format pix_fmt; struct v4l2_bt_timings active_timings; struct v4l2_bt_timings detected_timings; u32 v4l2_input_status; struct vb2_queue queue; struct video_device vdev; struct mutex video_lock; /* v4l2 and videobuf2 lock */ wait_queue_head_t wait; spinlock_t lock; /* buffer list lock */ struct delayed_work res_work; struct list_head buffers; unsigned long flags; unsigned int sequence; unsigned int max_compressed_size; struct aspeed_video_addr srcs[2]; struct aspeed_video_addr jpeg; bool yuv420; unsigned int frame_rate; unsigned int jpeg_quality; unsigned int frame_bottom; unsigned int frame_left; unsigned int frame_right; unsigned int frame_top; }; #define to_aspeed_video(x) container_of((x), struct aspeed_video, v4l2_dev) static const u32 aspeed_video_jpeg_header[ASPEED_VIDEO_JPEG_HEADER_SIZE] = { 0xe0ffd8ff, 0x464a1000, 0x01004649, 0x60000101, 0x00006000, 0x0f00feff, 0x00002d05, 0x00000000, 0x00000000, 0x00dbff00 }; static const u32 aspeed_video_jpeg_quant[ASPEED_VIDEO_JPEG_QUANT_SIZE] = { 0x081100c0, 0x00000000, 0x00110103, 0x03011102, 0xc4ff0111, 0x00001f00, 0x01010501, 0x01010101, 0x00000000, 0x00000000, 0x04030201, 0x08070605, 0xff0b0a09, 0x10b500c4, 0x03010200, 0x03040203, 0x04040505, 0x7d010000, 0x00030201, 0x12051104, 0x06413121, 0x07615113, 0x32147122, 0x08a19181, 0xc1b14223, 0xf0d15215, 0x72623324, 0x160a0982, 0x1a191817, 0x28272625, 0x35342a29, 0x39383736, 0x4544433a, 0x49484746, 0x5554534a, 0x59585756, 0x6564635a, 0x69686766, 0x7574736a, 0x79787776, 0x8584837a, 0x89888786, 0x9493928a, 0x98979695, 0xa3a29a99, 0xa7a6a5a4, 0xb2aaa9a8, 0xb6b5b4b3, 0xbab9b8b7, 0xc5c4c3c2, 0xc9c8c7c6, 0xd4d3d2ca, 0xd8d7d6d5, 0xe2e1dad9, 0xe6e5e4e3, 0xeae9e8e7, 0xf4f3f2f1, 0xf8f7f6f5, 0xc4fffaf9, 0x00011f00, 0x01010103, 0x01010101, 0x00000101, 0x00000000, 0x04030201, 0x08070605, 0xff0b0a09, 0x11b500c4, 0x02010200, 0x04030404, 0x04040507, 0x77020100, 0x03020100, 0x21050411, 0x41120631, 0x71610751, 0x81322213, 0x91421408, 0x09c1b1a1, 0xf0523323, 0xd1726215, 0x3424160a, 0x17f125e1, 0x261a1918, 0x2a292827, 0x38373635, 0x44433a39, 0x48474645, 0x54534a49, 0x58575655, 0x64635a59, 0x68676665, 0x74736a69, 0x78777675, 0x83827a79, 0x87868584, 0x928a8988, 0x96959493, 0x9a999897, 0xa5a4a3a2, 0xa9a8a7a6, 0xb4b3b2aa, 0xb8b7b6b5, 0xc3c2bab9, 0xc7c6c5c4, 0xd2cac9c8, 0xd6d5d4d3, 0xdad9d8d7, 0xe5e4e3e2, 0xe9e8e7e6, 0xf4f3f2ea, 0xf8f7f6f5, 0xdafffaf9, 0x01030c00, 0x03110200, 0x003f0011 }; static const u32 aspeed_video_jpeg_dct[ASPEED_VIDEO_JPEG_NUM_QUALITIES] [ASPEED_VIDEO_JPEG_DCT_SIZE] = { { 0x0d140043, 0x0c0f110f, 0x11101114, 0x17141516, 0x1e20321e, 0x3d1e1b1b, 0x32242e2b, 0x4b4c3f48, 0x44463f47, 0x61735a50, 0x566c5550, 0x88644644, 0x7a766c65, 0x4d808280, 0x8c978d60, 0x7e73967d, 0xdbff7b80, 0x1f014300, 0x272d2121, 0x3030582d, 0x697bb958, 0xb8b9b97b, 0xb9b8a6a6, 0xb9b9b9b9, 0xb9b9b9b9, 0xb9b9b9b9, 0xb9b9b9b9, 0xb9b9b9b9, 0xb9b9b9b9, 0xb9b9b9b9, 0xb9b9b9b9, 0xb9b9b9b9, 0xb9b9b9b9, 0xffb9b9b9 }, { 0x0c110043, 0x0a0d0f0d, 0x0f0e0f11, 0x14111213, 0x1a1c2b1a, 0x351a1818, 0x2b1f2826, 0x4142373f, 0x3c3d373e, 0x55644e46, 0x4b5f4a46, 0x77573d3c, 0x6b675f58, 0x43707170, 0x7a847b54, 0x6e64836d, 0xdbff6c70, 0x1b014300, 0x22271d1d, 0x2a2a4c27, 0x5b6ba04c, 0xa0a0a06b, 0xa0a0a0a0, 0xa0a0a0a0, 0xa0a0a0a0, 0xa0a0a0a0, 0xa0a0a0a0, 0xa0a0a0a0, 0xa0a0a0a0, 0xa0a0a0a0, 0xa0a0a0a0, 0xa0a0a0a0, 0xa0a0a0a0, 0xffa0a0a0 }, { 0x090e0043, 0x090a0c0a, 0x0c0b0c0e, 0x110e0f10, 0x15172415, 0x2c151313, 0x241a211f, 0x36372e34, 0x31322e33, 0x4653413a, 0x3e4e3d3a, 0x62483231, 0x58564e49, 0x385d5e5d, 0x656d6645, 0x5b536c5a, 0xdbff595d, 0x16014300, 0x1c201818, 0x22223f20, 0x4b58853f, 0x85858558, 0x85858585, 0x85858585, 0x85858585, 0x85858585, 0x85858585, 0x85858585, 0x85858585, 0x85858585, 0x85858585, 0x85858585, 0x85858585, 0xff858585 }, { 0x070b0043, 0x07080a08, 0x0a090a0b, 0x0d0b0c0c, 0x11121c11, 0x23110f0f, 0x1c141a19, 0x2b2b2429, 0x27282428, 0x3842332e, 0x313e302e, 0x4e392827, 0x46443e3a, 0x2c4a4a4a, 0x50565137, 0x48425647, 0xdbff474a, 0x12014300, 0x161a1313, 0x1c1c331a, 0x3d486c33, 0x6c6c6c48, 0x6c6c6c6c, 0x6c6c6c6c, 0x6c6c6c6c, 0x6c6c6c6c, 0x6c6c6c6c, 0x6c6c6c6c, 0x6c6c6c6c, 0x6c6c6c6c, 0x6c6c6c6c, 0x6c6c6c6c, 0x6c6c6c6c, 0xff6c6c6c }, { 0x06090043, 0x05060706, 0x07070709, 0x0a09090a, 0x0d0e160d, 0x1b0d0c0c, 0x16101413, 0x21221c20, 0x1e1f1c20, 0x2b332824, 0x26302624, 0x3d2d1f1e, 0x3735302d, 0x22393a39, 0x3f443f2b, 0x38334338, 0xdbff3739, 0x0d014300, 0x11130e0e, 0x15152613, 0x2d355026, 0x50505035, 0x50505050, 0x50505050, 0x50505050, 0x50505050, 0x50505050, 0x50505050, 0x50505050, 0x50505050, 0x50505050, 0x50505050, 0x50505050, 0xff505050 }, { 0x04060043, 0x03040504, 0x05040506, 0x07060606, 0x09090f09, 0x12090808, 0x0f0a0d0d, 0x16161315, 0x14151315, 0x1d221b18, 0x19201918, 0x281e1514, 0x2423201e, 0x17262726, 0x2a2d2a1c, 0x25222d25, 0xdbff2526, 0x09014300, 0x0b0d0a0a, 0x0e0e1a0d, 0x1f25371a, 0x37373725, 0x37373737, 0x37373737, 0x37373737, 0x37373737, 0x37373737, 0x37373737, 0x37373737, 0x37373737, 0x37373737, 0x37373737, 0x37373737, 0xff373737 }, { 0x02030043, 0x01020202, 0x02020203, 0x03030303, 0x04040704, 0x09040404, 0x07050606, 0x0b0b090a, 0x0a0a090a, 0x0e110d0c, 0x0c100c0c, 0x140f0a0a, 0x1211100f, 0x0b131313, 0x1516150e, 0x12111612, 0xdbff1213, 0x04014300, 0x05060505, 0x07070d06, 0x0f121b0d, 0x1b1b1b12, 0x1b1b1b1b, 0x1b1b1b1b, 0x1b1b1b1b, 0x1b1b1b1b, 0x1b1b1b1b, 0x1b1b1b1b, 0x1b1b1b1b, 0x1b1b1b1b, 0x1b1b1b1b, 0x1b1b1b1b, 0x1b1b1b1b, 0xff1b1b1b }, { 0x01020043, 0x01010101, 0x01010102, 0x02020202, 0x03030503, 0x06030202, 0x05030404, 0x07070607, 0x06070607, 0x090b0908, 0x080a0808, 0x0d0a0706, 0x0c0b0a0a, 0x070c0d0c, 0x0e0f0e09, 0x0c0b0f0c, 0xdbff0c0c, 0x03014300, 0x03040303, 0x04040804, 0x0a0c1208, 0x1212120c, 0x12121212, 0x12121212, 0x12121212, 0x12121212, 0x12121212, 0x12121212, 0x12121212, 0x12121212, 0x12121212, 0x12121212, 0x12121212, 0xff121212 }, { 0x01020043, 0x01010101, 0x01010102, 0x02020202, 0x03030503, 0x06030202, 0x05030404, 0x07070607, 0x06070607, 0x090b0908, 0x080a0808, 0x0d0a0706, 0x0c0b0a0a, 0x070c0d0c, 0x0e0f0e09, 0x0c0b0f0c, 0xdbff0c0c, 0x02014300, 0x03030202, 0x04040703, 0x080a0f07, 0x0f0f0f0a, 0x0f0f0f0f, 0x0f0f0f0f, 0x0f0f0f0f, 0x0f0f0f0f, 0x0f0f0f0f, 0x0f0f0f0f, 0x0f0f0f0f, 0x0f0f0f0f, 0x0f0f0f0f, 0x0f0f0f0f, 0x0f0f0f0f, 0xff0f0f0f }, { 0x01010043, 0x01010101, 0x01010101, 0x01010101, 0x02020302, 0x04020202, 0x03020303, 0x05050405, 0x05050405, 0x07080606, 0x06080606, 0x0a070505, 0x09080807, 0x05090909, 0x0a0b0a07, 0x09080b09, 0xdbff0909, 0x02014300, 0x02030202, 0x03030503, 0x07080c05, 0x0c0c0c08, 0x0c0c0c0c, 0x0c0c0c0c, 0x0c0c0c0c, 0x0c0c0c0c, 0x0c0c0c0c, 0x0c0c0c0c, 0x0c0c0c0c, 0x0c0c0c0c, 0x0c0c0c0c, 0x0c0c0c0c, 0x0c0c0c0c, 0xff0c0c0c }, { 0x01010043, 0x01010101, 0x01010101, 0x01010101, 0x01010201, 0x03010101, 0x02010202, 0x03030303, 0x03030303, 0x04050404, 0x04050404, 0x06050303, 0x06050505, 0x03060606, 0x07070704, 0x06050706, 0xdbff0606, 0x01014300, 0x01020101, 0x02020402, 0x05060904, 0x09090906, 0x09090909, 0x09090909, 0x09090909, 0x09090909, 0x09090909, 0x09090909, 0x09090909, 0x09090909, 0x09090909, 0x09090909, 0x09090909, 0xff090909 }, { 0x01010043, 0x01010101, 0x01010101, 0x01010101, 0x01010101, 0x01010101, 0x01010101, 0x01010101, 0x01010101, 0x02020202, 0x02020202, 0x03020101, 0x03020202, 0x01030303, 0x03030302, 0x03020303, 0xdbff0403, 0x01014300, 0x01010101, 0x01010201, 0x03040602, 0x06060604, 0x06060606, 0x06060606, 0x06060606, 0x06060606, 0x06060606, 0x06060606, 0x06060606, 0x06060606, 0x06060606, 0x06060606, 0x06060606, 0xff060606 } }; static const struct v4l2_dv_timings_cap aspeed_video_timings_cap = { .type = V4L2_DV_BT_656_1120, .bt = { .min_width = MIN_WIDTH, .max_width = MAX_WIDTH, .min_height = MIN_HEIGHT, .max_height = MAX_HEIGHT, .min_pixelclock = 6574080, /* 640 x 480 x 24Hz */ .max_pixelclock = 138240000, /* 1920 x 1200 x 60Hz */ .standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF, .capabilities = V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING | V4L2_DV_BT_CAP_CUSTOM, }, }; static void aspeed_video_init_jpeg_table(u32 *table, bool yuv420) { int i; unsigned int base; for (i = 0; i < ASPEED_VIDEO_JPEG_NUM_QUALITIES; i++) { base = 256 * i; /* AST HW requires this header spacing */ memcpy(&table[base], aspeed_video_jpeg_header, sizeof(aspeed_video_jpeg_header)); base += ASPEED_VIDEO_JPEG_HEADER_SIZE; memcpy(&table[base], aspeed_video_jpeg_dct[i], sizeof(aspeed_video_jpeg_dct[i])); base += ASPEED_VIDEO_JPEG_DCT_SIZE; memcpy(&table[base], aspeed_video_jpeg_quant, sizeof(aspeed_video_jpeg_quant)); if (yuv420) table[base + 2] = 0x00220103; } } static void aspeed_video_update(struct aspeed_video *video, u32 reg, u32 clear, u32 bits) { u32 t = readl(video->base + reg); u32 before = t; t &= ~clear; t |= bits; writel(t, video->base + reg); dev_dbg(video->dev, "update %03x[%08x -> %08x]\n", reg, before, readl(video->base + reg)); } static u32 aspeed_video_read(struct aspeed_video *video, u32 reg) { u32 t = readl(video->base + reg); dev_dbg(video->dev, "read %03x[%08x]\n", reg, t); return t; } static void aspeed_video_write(struct aspeed_video *video, u32 reg, u32 val) { writel(val, video->base + reg); dev_dbg(video->dev, "write %03x[%08x]\n", reg, readl(video->base + reg)); } static int aspeed_video_start_frame(struct aspeed_video *video) { dma_addr_t addr; unsigned long flags; struct aspeed_video_buffer *buf; u32 seq_ctrl = aspeed_video_read(video, VE_SEQ_CTRL); if (video->v4l2_input_status) { dev_dbg(video->dev, "No signal; don't start frame\n"); return 0; } if (!(seq_ctrl & VE_SEQ_CTRL_COMP_BUSY) || !(seq_ctrl & VE_SEQ_CTRL_CAP_BUSY)) { dev_err(video->dev, "Engine busy; don't start frame\n"); return -EBUSY; } spin_lock_irqsave(&video->lock, flags); buf = list_first_entry_or_null(&video->buffers, struct aspeed_video_buffer, link); if (!buf) { spin_unlock_irqrestore(&video->lock, flags); dev_dbg(video->dev, "No buffers; don't start frame\n"); return -EPROTO; } set_bit(VIDEO_FRAME_INPRG, &video->flags); addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0); spin_unlock_irqrestore(&video->lock, flags); aspeed_video_write(video, VE_COMP_PROC_OFFSET, 0); aspeed_video_write(video, VE_COMP_OFFSET, 0); aspeed_video_write(video, VE_COMP_ADDR, addr); aspeed_video_update(video, VE_INTERRUPT_CTRL, 0, VE_INTERRUPT_COMP_COMPLETE | VE_INTERRUPT_CAPTURE_COMPLETE); aspeed_video_update(video, VE_SEQ_CTRL, 0, VE_SEQ_CTRL_TRIG_CAPTURE | VE_SEQ_CTRL_TRIG_COMP); return 0; } static void aspeed_video_enable_mode_detect(struct aspeed_video *video) { /* Enable mode detect interrupts */ aspeed_video_update(video, VE_INTERRUPT_CTRL, 0, VE_INTERRUPT_MODE_DETECT); /* Trigger mode detect */ aspeed_video_update(video, VE_SEQ_CTRL, 0, VE_SEQ_CTRL_TRIG_MODE_DET); } static void aspeed_video_reset(struct aspeed_video *video) { /* Reset the engine */ reset_control_assert(video->rst); /* Don't usleep here; function may be called in interrupt context */ udelay(100); reset_control_deassert(video->rst); } static void aspeed_video_off(struct aspeed_video *video) { aspeed_video_reset(video); /* Turn off the relevant clocks */ clk_disable_unprepare(video->vclk); clk_disable_unprepare(video->eclk); } static void aspeed_video_on(struct aspeed_video *video) { /* Turn on the relevant clocks */ clk_prepare_enable(video->eclk); clk_prepare_enable(video->vclk); aspeed_video_reset(video); } static void aspeed_video_bufs_done(struct aspeed_video *video, enum vb2_buffer_state state) { unsigned long flags; struct aspeed_video_buffer *buf; spin_lock_irqsave(&video->lock, flags); list_for_each_entry(buf, &video->buffers, link) vb2_buffer_done(&buf->vb.vb2_buf, state); INIT_LIST_HEAD(&video->buffers); spin_unlock_irqrestore(&video->lock, flags); } static void aspeed_video_irq_res_change(struct aspeed_video *video) { dev_dbg(video->dev, "Resolution changed; resetting\n"); set_bit(VIDEO_RES_CHANGE, &video->flags); clear_bit(VIDEO_FRAME_INPRG, &video->flags); aspeed_video_off(video); aspeed_video_bufs_done(video, VB2_BUF_STATE_ERROR); schedule_delayed_work(&video->res_work, RESOLUTION_CHANGE_DELAY); } static irqreturn_t aspeed_video_irq(int irq, void *arg) { struct aspeed_video *video = arg; u32 sts = aspeed_video_read(video, VE_INTERRUPT_STATUS); /* * Resolution changed or signal was lost; reset the engine and * re-initialize */ if (sts & VE_INTERRUPT_MODE_DETECT_WD) { aspeed_video_irq_res_change(video); return IRQ_HANDLED; } if (sts & VE_INTERRUPT_MODE_DETECT) { if (test_bit(VIDEO_RES_DETECT, &video->flags)) { aspeed_video_update(video, VE_INTERRUPT_CTRL, VE_INTERRUPT_MODE_DETECT, 0); aspeed_video_write(video, VE_INTERRUPT_STATUS, VE_INTERRUPT_MODE_DETECT); set_bit(VIDEO_MODE_DETECT_DONE, &video->flags); wake_up_interruptible_all(&video->wait); } else { /* * Signal acquired while NOT doing resolution * detection; reset the engine and re-initialize */ aspeed_video_irq_res_change(video); return IRQ_HANDLED; } } if ((sts & VE_INTERRUPT_COMP_COMPLETE) && (sts & VE_INTERRUPT_CAPTURE_COMPLETE)) { struct aspeed_video_buffer *buf; u32 frame_size = aspeed_video_read(video, VE_OFFSET_COMP_STREAM); spin_lock(&video->lock); clear_bit(VIDEO_FRAME_INPRG, &video->flags); buf = list_first_entry_or_null(&video->buffers, struct aspeed_video_buffer, link); if (buf) { vb2_set_plane_payload(&buf->vb.vb2_buf, 0, frame_size); if (!list_is_last(&buf->link, &video->buffers)) { buf->vb.vb2_buf.timestamp = ktime_get_ns(); buf->vb.sequence = video->sequence++; buf->vb.field = V4L2_FIELD_NONE; vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); list_del(&buf->link); } } spin_unlock(&video->lock); aspeed_video_update(video, VE_SEQ_CTRL, VE_SEQ_CTRL_TRIG_CAPTURE | VE_SEQ_CTRL_FORCE_IDLE | VE_SEQ_CTRL_TRIG_COMP, 0); aspeed_video_update(video, VE_INTERRUPT_CTRL, VE_INTERRUPT_COMP_COMPLETE | VE_INTERRUPT_CAPTURE_COMPLETE, 0); aspeed_video_write(video, VE_INTERRUPT_STATUS, VE_INTERRUPT_COMP_COMPLETE | VE_INTERRUPT_CAPTURE_COMPLETE); if (test_bit(VIDEO_STREAMING, &video->flags) && buf) aspeed_video_start_frame(video); } return IRQ_HANDLED; } static void aspeed_video_check_and_set_polarity(struct aspeed_video *video) { int i; int hsync_counter = 0; int vsync_counter = 0; u32 sts; for (i = 0; i < NUM_POLARITY_CHECKS; ++i) { sts = aspeed_video_read(video, VE_MODE_DETECT_STATUS); if (sts & VE_MODE_DETECT_STATUS_VSYNC) vsync_counter--; else vsync_counter++; if (sts & VE_MODE_DETECT_STATUS_HSYNC) hsync_counter--; else hsync_counter++; } if (hsync_counter < 0 || vsync_counter < 0) { u32 ctrl; if (hsync_counter < 0) { ctrl = VE_CTRL_HSYNC_POL; video->detected_timings.polarities &= ~V4L2_DV_HSYNC_POS_POL; } else { video->detected_timings.polarities |= V4L2_DV_HSYNC_POS_POL; } if (vsync_counter < 0) { ctrl = VE_CTRL_VSYNC_POL; video->detected_timings.polarities &= ~V4L2_DV_VSYNC_POS_POL; } else { video->detected_timings.polarities |= V4L2_DV_VSYNC_POS_POL; } aspeed_video_update(video, VE_CTRL, 0, ctrl); } } static bool aspeed_video_alloc_buf(struct aspeed_video *video, struct aspeed_video_addr *addr, unsigned int size) { addr->virt = dma_alloc_coherent(video->dev, size, &addr->dma, GFP_KERNEL); if (!addr->virt) return false; addr->size = size; return true; } static void aspeed_video_free_buf(struct aspeed_video *video, struct aspeed_video_addr *addr) { dma_free_coherent(video->dev, addr->size, addr->virt, addr->dma); addr->size = 0; addr->dma = 0ULL; addr->virt = NULL; } /* * Get the minimum HW-supported compression buffer size for the frame size. * Assume worst-case JPEG compression size is 1/8 raw size. This should be * plenty even for maximum quality; any worse and the engine will simply return * incomplete JPEGs. */ static void aspeed_video_calc_compressed_size(struct aspeed_video *video, unsigned int frame_size) { int i, j; u32 compression_buffer_size_reg = 0; unsigned int size; const unsigned int num_compression_packets = 4; const unsigned int compression_packet_size = 1024; const unsigned int max_compressed_size = frame_size / 2; /* 4bpp / 8 */ video->max_compressed_size = UINT_MAX; for (i = 0; i < 6; ++i) { for (j = 0; j < 8; ++j) { size = (num_compression_packets << i) * (compression_packet_size << j); if (size < max_compressed_size) continue; if (size < video->max_compressed_size) { compression_buffer_size_reg = (i << 3) | j; video->max_compressed_size = size; } } } aspeed_video_write(video, VE_STREAM_BUF_SIZE, compression_buffer_size_reg); dev_dbg(video->dev, "Max compressed size: %x\n", video->max_compressed_size); } #define res_check(v) test_and_clear_bit(VIDEO_MODE_DETECT_DONE, &(v)->flags) static void aspeed_video_get_resolution(struct aspeed_video *video) { bool invalid_resolution = true; int rc; int tries = 0; u32 mds; u32 src_lr_edge; u32 src_tb_edge; u32 sync; struct v4l2_bt_timings *det = &video->detected_timings; det->width = MIN_WIDTH; det->height = MIN_HEIGHT; video->v4l2_input_status = V4L2_IN_ST_NO_SIGNAL; /* * Since we need max buffer size for detection, free the second source * buffer first. */ if (video->srcs[1].size) aspeed_video_free_buf(video, &video->srcs[1]); if (video->srcs[0].size < VE_MAX_SRC_BUFFER_SIZE) { if (video->srcs[0].size) aspeed_video_free_buf(video, &video->srcs[0]); if (!aspeed_video_alloc_buf(video, &video->srcs[0], VE_MAX_SRC_BUFFER_SIZE)) { dev_err(video->dev, "Failed to allocate source buffers\n"); return; } } aspeed_video_write(video, VE_SRC0_ADDR, video->srcs[0].dma); do { if (tries) { set_current_state(TASK_INTERRUPTIBLE); if (schedule_timeout(INVALID_RESOLUTION_DELAY)) return; } set_bit(VIDEO_RES_DETECT, &video->flags); aspeed_video_enable_mode_detect(video); rc = wait_event_interruptible_timeout(video->wait, res_check(video), MODE_DETECT_TIMEOUT); if (!rc) { dev_err(video->dev, "Timed out; first mode detect\n"); clear_bit(VIDEO_RES_DETECT, &video->flags); return; } /* Disable mode detect in order to re-trigger */ aspeed_video_update(video, VE_SEQ_CTRL, VE_SEQ_CTRL_TRIG_MODE_DET, 0); aspeed_video_check_and_set_polarity(video); aspeed_video_enable_mode_detect(video); rc = wait_event_interruptible_timeout(video->wait, res_check(video), MODE_DETECT_TIMEOUT); clear_bit(VIDEO_RES_DETECT, &video->flags); if (!rc) { dev_err(video->dev, "Timed out; second mode detect\n"); return; } src_lr_edge = aspeed_video_read(video, VE_SRC_LR_EDGE_DET); src_tb_edge = aspeed_video_read(video, VE_SRC_TB_EDGE_DET); mds = aspeed_video_read(video, VE_MODE_DETECT_STATUS); sync = aspeed_video_read(video, VE_SYNC_STATUS); video->frame_bottom = (src_tb_edge & VE_SRC_TB_EDGE_DET_BOT) >> VE_SRC_TB_EDGE_DET_BOT_SHF; video->frame_top = src_tb_edge & VE_SRC_TB_EDGE_DET_TOP; det->vfrontporch = video->frame_top; det->vbackporch = ((mds & VE_MODE_DETECT_V_LINES) >> VE_MODE_DETECT_V_LINES_SHF) - video->frame_bottom; det->vsync = (sync & VE_SYNC_STATUS_VSYNC) >> VE_SYNC_STATUS_VSYNC_SHF; if (video->frame_top > video->frame_bottom) continue; video->frame_right = (src_lr_edge & VE_SRC_LR_EDGE_DET_RT) >> VE_SRC_LR_EDGE_DET_RT_SHF; video->frame_left = src_lr_edge & VE_SRC_LR_EDGE_DET_LEFT; det->hfrontporch = video->frame_left; det->hbackporch = (mds & VE_MODE_DETECT_H_PIXELS) - video->frame_right; det->hsync = sync & VE_SYNC_STATUS_HSYNC; if (video->frame_left > video->frame_right) continue; invalid_resolution = false; } while (invalid_resolution && (tries++ < INVALID_RESOLUTION_RETRIES)); if (invalid_resolution) { dev_err(video->dev, "Invalid resolution detected\n"); return; } det->height = (video->frame_bottom - video->frame_top) + 1; det->width = (video->frame_right - video->frame_left) + 1; video->v4l2_input_status = 0; /* * Enable mode-detect watchdog, resolution-change watchdog and * automatic compression after frame capture. */ aspeed_video_update(video, VE_INTERRUPT_CTRL, 0, VE_INTERRUPT_MODE_DETECT_WD); aspeed_video_update(video, VE_SEQ_CTRL, 0, VE_SEQ_CTRL_AUTO_COMP | VE_SEQ_CTRL_EN_WATCHDOG); dev_dbg(video->dev, "Got resolution: %dx%d\n", det->width, det->height); } static void aspeed_video_set_resolution(struct aspeed_video *video) { struct v4l2_bt_timings *act = &video->active_timings; unsigned int size = act->width * act->height; aspeed_video_calc_compressed_size(video, size); /* Don't use direct mode below 1024 x 768 (irqs don't fire) */ if (size < DIRECT_FETCH_THRESHOLD) { aspeed_video_write(video, VE_TGS_0, FIELD_PREP(VE_TGS_FIRST, video->frame_left - 1) | FIELD_PREP(VE_TGS_LAST, video->frame_right)); aspeed_video_write(video, VE_TGS_1, FIELD_PREP(VE_TGS_FIRST, video->frame_top) | FIELD_PREP(VE_TGS_LAST, video->frame_bottom + 1)); aspeed_video_update(video, VE_CTRL, 0, VE_CTRL_INT_DE); } else { aspeed_video_update(video, VE_CTRL, 0, VE_CTRL_DIRECT_FETCH); } /* Set capture/compression frame sizes */ aspeed_video_write(video, VE_CAP_WINDOW, act->width << 16 | act->height); aspeed_video_write(video, VE_COMP_WINDOW, act->width << 16 | act->height); aspeed_video_write(video, VE_SRC_SCANLINE_OFFSET, act->width * 4); size *= 4; if (size == video->srcs[0].size / 2) { aspeed_video_write(video, VE_SRC1_ADDR, video->srcs[0].dma + size); } else if (size == video->srcs[0].size) { if (!aspeed_video_alloc_buf(video, &video->srcs[1], size)) goto err_mem; aspeed_video_write(video, VE_SRC1_ADDR, video->srcs[1].dma); } else { aspeed_video_free_buf(video, &video->srcs[0]); if (!aspeed_video_alloc_buf(video, &video->srcs[0], size)) goto err_mem; if (!aspeed_video_alloc_buf(video, &video->srcs[1], size)) goto err_mem; aspeed_video_write(video, VE_SRC0_ADDR, video->srcs[0].dma); aspeed_video_write(video, VE_SRC1_ADDR, video->srcs[1].dma); } return; err_mem: dev_err(video->dev, "Failed to allocate source buffers\n"); if (video->srcs[0].size) aspeed_video_free_buf(video, &video->srcs[0]); } static void aspeed_video_init_regs(struct aspeed_video *video) { u32 comp_ctrl = VE_COMP_CTRL_RSVD | FIELD_PREP(VE_COMP_CTRL_DCT_LUM, video->jpeg_quality) | FIELD_PREP(VE_COMP_CTRL_DCT_CHR, video->jpeg_quality | 0x10); u32 ctrl = VE_CTRL_AUTO_OR_CURSOR; u32 seq_ctrl = VE_SEQ_CTRL_JPEG_MODE; if (video->frame_rate) ctrl |= FIELD_PREP(VE_CTRL_FRC, video->frame_rate); if (video->yuv420) seq_ctrl |= VE_SEQ_CTRL_YUV420; /* Unlock VE registers */ aspeed_video_write(video, VE_PROTECTION_KEY, VE_PROTECTION_KEY_UNLOCK); /* Disable interrupts */ aspeed_video_write(video, VE_INTERRUPT_CTRL, 0); aspeed_video_write(video, VE_INTERRUPT_STATUS, 0xffffffff); /* Clear the offset */ aspeed_video_write(video, VE_COMP_PROC_OFFSET, 0); aspeed_video_write(video, VE_COMP_OFFSET, 0); aspeed_video_write(video, VE_JPEG_ADDR, video->jpeg.dma); /* Set control registers */ aspeed_video_write(video, VE_SEQ_CTRL, seq_ctrl); aspeed_video_write(video, VE_CTRL, ctrl); aspeed_video_write(video, VE_COMP_CTRL, comp_ctrl); /* Don't downscale */ aspeed_video_write(video, VE_SCALING_FACTOR, 0x10001000); aspeed_video_write(video, VE_SCALING_FILTER0, 0x00200000); aspeed_video_write(video, VE_SCALING_FILTER1, 0x00200000); aspeed_video_write(video, VE_SCALING_FILTER2, 0x00200000); aspeed_video_write(video, VE_SCALING_FILTER3, 0x00200000); /* Set mode detection defaults */ aspeed_video_write(video, VE_MODE_DETECT, 0x22666500); } static void aspeed_video_start(struct aspeed_video *video) { aspeed_video_on(video); aspeed_video_init_regs(video); /* Resolution set to 640x480 if no signal found */ aspeed_video_get_resolution(video); /* Set timings since the device is being opened for the first time */ video->active_timings = video->detected_timings; aspeed_video_set_resolution(video); video->pix_fmt.width = video->active_timings.width; video->pix_fmt.height = video->active_timings.height; video->pix_fmt.sizeimage = video->max_compressed_size; } static void aspeed_video_stop(struct aspeed_video *video) { set_bit(VIDEO_STOPPED, &video->flags); cancel_delayed_work_sync(&video->res_work); aspeed_video_off(video); if (video->srcs[0].size) aspeed_video_free_buf(video, &video->srcs[0]); if (video->srcs[1].size) aspeed_video_free_buf(video, &video->srcs[1]); video->v4l2_input_status = V4L2_IN_ST_NO_SIGNAL; video->flags = 0; } static int aspeed_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap) { strscpy(cap->driver, DEVICE_NAME, sizeof(cap->driver)); strscpy(cap->card, "Aspeed Video Engine", sizeof(cap->card)); snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", DEVICE_NAME); return 0; } static int aspeed_video_enum_format(struct file *file, void *fh, struct v4l2_fmtdesc *f) { if (f->index) return -EINVAL; f->pixelformat = V4L2_PIX_FMT_JPEG; return 0; } static int aspeed_video_get_format(struct file *file, void *fh, struct v4l2_format *f) { struct aspeed_video *video = video_drvdata(file); f->fmt.pix = video->pix_fmt; return 0; } static int aspeed_video_enum_input(struct file *file, void *fh, struct v4l2_input *inp) { struct aspeed_video *video = video_drvdata(file); if (inp->index) return -EINVAL; strscpy(inp->name, "Host VGA capture", sizeof(inp->name)); inp->type = V4L2_INPUT_TYPE_CAMERA; inp->capabilities = V4L2_IN_CAP_DV_TIMINGS; inp->status = video->v4l2_input_status; return 0; } static int aspeed_video_get_input(struct file *file, void *fh, unsigned int *i) { *i = 0; return 0; } static int aspeed_video_set_input(struct file *file, void *fh, unsigned int i) { if (i) return -EINVAL; return 0; } static int aspeed_video_get_parm(struct file *file, void *fh, struct v4l2_streamparm *a) { struct aspeed_video *video = video_drvdata(file); a->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; a->parm.capture.readbuffers = 3; a->parm.capture.timeperframe.numerator = 1; if (!video->frame_rate) a->parm.capture.timeperframe.denominator = MAX_FRAME_RATE; else a->parm.capture.timeperframe.denominator = video->frame_rate; return 0; } static int aspeed_video_set_parm(struct file *file, void *fh, struct v4l2_streamparm *a) { unsigned int frame_rate = 0; struct aspeed_video *video = video_drvdata(file); a->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; a->parm.capture.readbuffers = 3; if (a->parm.capture.timeperframe.numerator) frame_rate = a->parm.capture.timeperframe.denominator / a->parm.capture.timeperframe.numerator; if (!frame_rate || frame_rate > MAX_FRAME_RATE) { frame_rate = 0; a->parm.capture.timeperframe.denominator = MAX_FRAME_RATE; a->parm.capture.timeperframe.numerator = 1; } if (video->frame_rate != frame_rate) { video->frame_rate = frame_rate; aspeed_video_update(video, VE_CTRL, VE_CTRL_FRC, FIELD_PREP(VE_CTRL_FRC, frame_rate)); } return 0; } static int aspeed_video_enum_framesizes(struct file *file, void *fh, struct v4l2_frmsizeenum *fsize) { struct aspeed_video *video = video_drvdata(file); if (fsize->index) return -EINVAL; if (fsize->pixel_format != V4L2_PIX_FMT_JPEG) return -EINVAL; fsize->discrete.width = video->pix_fmt.width; fsize->discrete.height = video->pix_fmt.height; fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; return 0; } static int aspeed_video_enum_frameintervals(struct file *file, void *fh, struct v4l2_frmivalenum *fival) { struct aspeed_video *video = video_drvdata(file); if (fival->index) return -EINVAL; if (fival->width != video->detected_timings.width || fival->height != video->detected_timings.height) return -EINVAL; if (fival->pixel_format != V4L2_PIX_FMT_JPEG) return -EINVAL; fival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS; fival->stepwise.min.denominator = MAX_FRAME_RATE; fival->stepwise.min.numerator = 1; fival->stepwise.max.denominator = 1; fival->stepwise.max.numerator = 1; fival->stepwise.step = fival->stepwise.max; return 0; } static int aspeed_video_set_dv_timings(struct file *file, void *fh, struct v4l2_dv_timings *timings) { struct aspeed_video *video = video_drvdata(file); if (timings->bt.width == video->active_timings.width && timings->bt.height == video->active_timings.height) return 0; if (vb2_is_busy(&video->queue)) return -EBUSY; video->active_timings = timings->bt; aspeed_video_set_resolution(video); video->pix_fmt.width = timings->bt.width; video->pix_fmt.height = timings->bt.height; video->pix_fmt.sizeimage = video->max_compressed_size; timings->type = V4L2_DV_BT_656_1120; return 0; } static int aspeed_video_get_dv_timings(struct file *file, void *fh, struct v4l2_dv_timings *timings) { struct aspeed_video *video = video_drvdata(file); timings->type = V4L2_DV_BT_656_1120; timings->bt = video->active_timings; return 0; } static int aspeed_video_query_dv_timings(struct file *file, void *fh, struct v4l2_dv_timings *timings) { int rc; struct aspeed_video *video = video_drvdata(file); /* * This blocks only if the driver is currently in the process of * detecting a new resolution; in the event of no signal or timeout * this function is woken up. */ if (file->f_flags & O_NONBLOCK) { if (test_bit(VIDEO_RES_CHANGE, &video->flags)) return -EAGAIN; } else { rc = wait_event_interruptible(video->wait, !test_bit(VIDEO_RES_CHANGE, &video->flags)); if (rc) return -EINTR; } timings->type = V4L2_DV_BT_656_1120; timings->bt = video->detected_timings; return video->v4l2_input_status ? -ENOLINK : 0; } static int aspeed_video_enum_dv_timings(struct file *file, void *fh, struct v4l2_enum_dv_timings *timings) { return v4l2_enum_dv_timings_cap(timings, &aspeed_video_timings_cap, NULL, NULL); } static int aspeed_video_dv_timings_cap(struct file *file, void *fh, struct v4l2_dv_timings_cap *cap) { *cap = aspeed_video_timings_cap; return 0; } static int aspeed_video_sub_event(struct v4l2_fh *fh, const struct v4l2_event_subscription *sub) { switch (sub->type) { case V4L2_EVENT_SOURCE_CHANGE: return v4l2_src_change_event_subscribe(fh, sub); } return v4l2_ctrl_subscribe_event(fh, sub); } static const struct v4l2_ioctl_ops aspeed_video_ioctl_ops = { .vidioc_querycap = aspeed_video_querycap, .vidioc_enum_fmt_vid_cap = aspeed_video_enum_format, .vidioc_g_fmt_vid_cap = aspeed_video_get_format, .vidioc_s_fmt_vid_cap = aspeed_video_get_format, .vidioc_try_fmt_vid_cap = aspeed_video_get_format, .vidioc_reqbufs = vb2_ioctl_reqbufs, .vidioc_querybuf = vb2_ioctl_querybuf, .vidioc_qbuf = vb2_ioctl_qbuf, .vidioc_expbuf = vb2_ioctl_expbuf, .vidioc_dqbuf = vb2_ioctl_dqbuf, .vidioc_create_bufs = vb2_ioctl_create_bufs, .vidioc_prepare_buf = vb2_ioctl_prepare_buf, .vidioc_streamon = vb2_ioctl_streamon, .vidioc_streamoff = vb2_ioctl_streamoff, .vidioc_enum_input = aspeed_video_enum_input, .vidioc_g_input = aspeed_video_get_input, .vidioc_s_input = aspeed_video_set_input, .vidioc_g_parm = aspeed_video_get_parm, .vidioc_s_parm = aspeed_video_set_parm, .vidioc_enum_framesizes = aspeed_video_enum_framesizes, .vidioc_enum_frameintervals = aspeed_video_enum_frameintervals, .vidioc_s_dv_timings = aspeed_video_set_dv_timings, .vidioc_g_dv_timings = aspeed_video_get_dv_timings, .vidioc_query_dv_timings = aspeed_video_query_dv_timings, .vidioc_enum_dv_timings = aspeed_video_enum_dv_timings, .vidioc_dv_timings_cap = aspeed_video_dv_timings_cap, .vidioc_subscribe_event = aspeed_video_sub_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; static void aspeed_video_update_jpeg_quality(struct aspeed_video *video) { u32 comp_ctrl = FIELD_PREP(VE_COMP_CTRL_DCT_LUM, video->jpeg_quality) | FIELD_PREP(VE_COMP_CTRL_DCT_CHR, video->jpeg_quality | 0x10); aspeed_video_update(video, VE_COMP_CTRL, VE_COMP_CTRL_DCT_LUM | VE_COMP_CTRL_DCT_CHR, comp_ctrl); } static void aspeed_video_update_subsampling(struct aspeed_video *video) { if (video->jpeg.virt) aspeed_video_init_jpeg_table(video->jpeg.virt, video->yuv420); if (video->yuv420) aspeed_video_update(video, VE_SEQ_CTRL, 0, VE_SEQ_CTRL_YUV420); else aspeed_video_update(video, VE_SEQ_CTRL, VE_SEQ_CTRL_YUV420, 0); } static int aspeed_video_set_ctrl(struct v4l2_ctrl *ctrl) { struct aspeed_video *video = container_of(ctrl->handler, struct aspeed_video, ctrl_handler); switch (ctrl->id) { case V4L2_CID_JPEG_COMPRESSION_QUALITY: video->jpeg_quality = ctrl->val; aspeed_video_update_jpeg_quality(video); break; case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: if (ctrl->val == V4L2_JPEG_CHROMA_SUBSAMPLING_420) { video->yuv420 = true; aspeed_video_update_subsampling(video); } else { video->yuv420 = false; aspeed_video_update_subsampling(video); } break; default: return -EINVAL; } return 0; } static const struct v4l2_ctrl_ops aspeed_video_ctrl_ops = { .s_ctrl = aspeed_video_set_ctrl, }; static void aspeed_video_resolution_work(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct aspeed_video *video = container_of(dwork, struct aspeed_video, res_work); u32 input_status = video->v4l2_input_status; aspeed_video_on(video); /* Exit early in case no clients remain */ if (test_bit(VIDEO_STOPPED, &video->flags)) goto done; aspeed_video_init_regs(video); aspeed_video_get_resolution(video); if (video->detected_timings.width != video->active_timings.width || video->detected_timings.height != video->active_timings.height || input_status != video->v4l2_input_status) { static const struct v4l2_event ev = { .type = V4L2_EVENT_SOURCE_CHANGE, .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, }; v4l2_event_queue(&video->vdev, &ev); } else if (test_bit(VIDEO_STREAMING, &video->flags)) { /* No resolution change so just restart streaming */ aspeed_video_start_frame(video); } done: clear_bit(VIDEO_RES_CHANGE, &video->flags); wake_up_interruptible_all(&video->wait); } static int aspeed_video_open(struct file *file) { int rc; struct aspeed_video *video = video_drvdata(file); mutex_lock(&video->video_lock); rc = v4l2_fh_open(file); if (rc) { mutex_unlock(&video->video_lock); return rc; } if (v4l2_fh_is_singular_file(file)) aspeed_video_start(video); mutex_unlock(&video->video_lock); return 0; } static int aspeed_video_release(struct file *file) { int rc; struct aspeed_video *video = video_drvdata(file); mutex_lock(&video->video_lock); if (v4l2_fh_is_singular_file(file)) aspeed_video_stop(video); rc = _vb2_fop_release(file, NULL); mutex_unlock(&video->video_lock); return rc; } static const struct v4l2_file_operations aspeed_video_v4l2_fops = { .owner = THIS_MODULE, .read = vb2_fop_read, .poll = vb2_fop_poll, .unlocked_ioctl = video_ioctl2, .mmap = vb2_fop_mmap, .open = aspeed_video_open, .release = aspeed_video_release, }; static int aspeed_video_queue_setup(struct vb2_queue *q, unsigned int *num_buffers, unsigned int *num_planes, unsigned int sizes[], struct device *alloc_devs[]) { struct aspeed_video *video = vb2_get_drv_priv(q); if (*num_planes) { if (sizes[0] < video->max_compressed_size) return -EINVAL; return 0; } *num_planes = 1; sizes[0] = video->max_compressed_size; return 0; } static int aspeed_video_buf_prepare(struct vb2_buffer *vb) { struct aspeed_video *video = vb2_get_drv_priv(vb->vb2_queue); if (vb2_plane_size(vb, 0) < video->max_compressed_size) return -EINVAL; return 0; } static int aspeed_video_start_streaming(struct vb2_queue *q, unsigned int count) { int rc; struct aspeed_video *video = vb2_get_drv_priv(q); video->sequence = 0; rc = aspeed_video_start_frame(video); if (rc) { aspeed_video_bufs_done(video, VB2_BUF_STATE_QUEUED); return rc; } set_bit(VIDEO_STREAMING, &video->flags); return 0; } static void aspeed_video_stop_streaming(struct vb2_queue *q) { int rc; struct aspeed_video *video = vb2_get_drv_priv(q); clear_bit(VIDEO_STREAMING, &video->flags); rc = wait_event_timeout(video->wait, !test_bit(VIDEO_FRAME_INPRG, &video->flags), STOP_TIMEOUT); if (!rc) { dev_err(video->dev, "Timed out when stopping streaming\n"); /* * Need to force stop any DMA and try and get HW into a good * state for future calls to start streaming again. */ aspeed_video_reset(video); aspeed_video_init_regs(video); aspeed_video_get_resolution(video); } aspeed_video_bufs_done(video, VB2_BUF_STATE_ERROR); } static void aspeed_video_buf_queue(struct vb2_buffer *vb) { bool empty; struct aspeed_video *video = vb2_get_drv_priv(vb->vb2_queue); struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct aspeed_video_buffer *avb = to_aspeed_video_buffer(vbuf); unsigned long flags; spin_lock_irqsave(&video->lock, flags); empty = list_empty(&video->buffers); list_add_tail(&avb->link, &video->buffers); spin_unlock_irqrestore(&video->lock, flags); if (test_bit(VIDEO_STREAMING, &video->flags) && !test_bit(VIDEO_FRAME_INPRG, &video->flags) && empty) aspeed_video_start_frame(video); } static const struct vb2_ops aspeed_video_vb2_ops = { .queue_setup = aspeed_video_queue_setup, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, .buf_prepare = aspeed_video_buf_prepare, .start_streaming = aspeed_video_start_streaming, .stop_streaming = aspeed_video_stop_streaming, .buf_queue = aspeed_video_buf_queue, }; static int aspeed_video_setup_video(struct aspeed_video *video) { const u64 mask = ~(BIT(V4L2_JPEG_CHROMA_SUBSAMPLING_444) | BIT(V4L2_JPEG_CHROMA_SUBSAMPLING_420)); struct v4l2_device *v4l2_dev = &video->v4l2_dev; struct vb2_queue *vbq = &video->queue; struct video_device *vdev = &video->vdev; int rc; video->pix_fmt.pixelformat = V4L2_PIX_FMT_JPEG; video->pix_fmt.field = V4L2_FIELD_NONE; video->pix_fmt.colorspace = V4L2_COLORSPACE_SRGB; video->pix_fmt.quantization = V4L2_QUANTIZATION_FULL_RANGE; video->v4l2_input_status = V4L2_IN_ST_NO_SIGNAL; rc = v4l2_device_register(video->dev, v4l2_dev); if (rc) { dev_err(video->dev, "Failed to register v4l2 device\n"); return rc; } v4l2_ctrl_handler_init(&video->ctrl_handler, 2); v4l2_ctrl_new_std(&video->ctrl_handler, &aspeed_video_ctrl_ops, V4L2_CID_JPEG_COMPRESSION_QUALITY, 0, ASPEED_VIDEO_JPEG_NUM_QUALITIES - 1, 1, 0); v4l2_ctrl_new_std_menu(&video->ctrl_handler, &aspeed_video_ctrl_ops, V4L2_CID_JPEG_CHROMA_SUBSAMPLING, V4L2_JPEG_CHROMA_SUBSAMPLING_420, mask, V4L2_JPEG_CHROMA_SUBSAMPLING_444); if (video->ctrl_handler.error) { v4l2_ctrl_handler_free(&video->ctrl_handler); v4l2_device_unregister(v4l2_dev); dev_err(video->dev, "Failed to init controls: %d\n", video->ctrl_handler.error); return rc; } v4l2_dev->ctrl_handler = &video->ctrl_handler; vbq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; vbq->io_modes = VB2_MMAP | VB2_READ | VB2_DMABUF; vbq->dev = v4l2_dev->dev; vbq->lock = &video->video_lock; vbq->ops = &aspeed_video_vb2_ops; vbq->mem_ops = &vb2_dma_contig_memops; vbq->drv_priv = video; vbq->buf_struct_size = sizeof(struct aspeed_video_buffer); vbq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; vbq->min_buffers_needed = 3; rc = vb2_queue_init(vbq); if (rc) { v4l2_ctrl_handler_free(&video->ctrl_handler); v4l2_device_unregister(v4l2_dev); dev_err(video->dev, "Failed to init vb2 queue\n"); return rc; } vdev->queue = vbq; vdev->fops = &aspeed_video_v4l2_fops; vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; vdev->v4l2_dev = v4l2_dev; strscpy(vdev->name, DEVICE_NAME, sizeof(vdev->name)); vdev->vfl_type = VFL_TYPE_GRABBER; vdev->vfl_dir = VFL_DIR_RX; vdev->release = video_device_release_empty; vdev->ioctl_ops = &aspeed_video_ioctl_ops; vdev->lock = &video->video_lock; video_set_drvdata(vdev, video); rc = video_register_device(vdev, VFL_TYPE_GRABBER, 0); if (rc) { vb2_queue_release(vbq); v4l2_ctrl_handler_free(&video->ctrl_handler); v4l2_device_unregister(v4l2_dev); dev_err(video->dev, "Failed to register video device\n"); return rc; } return 0; } static int aspeed_video_init(struct aspeed_video *video) { int irq; int rc; struct device *dev = video->dev; irq = irq_of_parse_and_map(dev->of_node, 0); if (!irq) { dev_err(dev, "Unable to find IRQ\n"); return -ENODEV; } rc = devm_request_irq(dev, irq, aspeed_video_irq, IRQF_SHARED, DEVICE_NAME, video); if (rc < 0) { dev_err(dev, "Unable to request IRQ %d\n", irq); return rc; } video->eclk = devm_clk_get(dev, "eclk"); if (IS_ERR(video->eclk)) { dev_err(dev, "Unable to get ECLK\n"); return PTR_ERR(video->eclk); } video->vclk = devm_clk_get(dev, "vclk"); if (IS_ERR(video->vclk)) { dev_err(dev, "Unable to get VCLK\n"); return PTR_ERR(video->vclk); } video->rst = devm_reset_control_get_exclusive(dev, NULL); if (IS_ERR(video->rst)) { dev_err(dev, "Unable to get VE reset\n"); return PTR_ERR(video->rst); } rc = of_reserved_mem_device_init(dev); if (rc) { dev_err(dev, "Unable to reserve memory\n"); return rc; } rc = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); if (rc) { dev_err(dev, "Failed to set DMA mask\n"); of_reserved_mem_device_release(dev); return rc; } if (!aspeed_video_alloc_buf(video, &video->jpeg, VE_JPEG_HEADER_SIZE)) { dev_err(dev, "Failed to allocate DMA for JPEG header\n"); of_reserved_mem_device_release(dev); return rc; } aspeed_video_init_jpeg_table(video->jpeg.virt, video->yuv420); return 0; } static int aspeed_video_probe(struct platform_device *pdev) { int rc; struct resource *res; struct aspeed_video *video = kzalloc(sizeof(*video), GFP_KERNEL); if (!video) return -ENOMEM; video->frame_rate = 30; video->dev = &pdev->dev; mutex_init(&video->video_lock); init_waitqueue_head(&video->wait); INIT_DELAYED_WORK(&video->res_work, aspeed_video_resolution_work); INIT_LIST_HEAD(&video->buffers); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); video->base = devm_ioremap_resource(video->dev, res); if (IS_ERR(video->base)) return PTR_ERR(video->base); rc = aspeed_video_init(video); if (rc) return rc; rc = aspeed_video_setup_video(video); if (rc) return rc; return 0; } static int aspeed_video_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct v4l2_device *v4l2_dev = dev_get_drvdata(dev); struct aspeed_video *video = to_aspeed_video(v4l2_dev); video_unregister_device(&video->vdev); vb2_queue_release(&video->queue); v4l2_ctrl_handler_free(&video->ctrl_handler); v4l2_device_unregister(v4l2_dev); dma_free_coherent(video->dev, VE_JPEG_HEADER_SIZE, video->jpeg.virt, video->jpeg.dma); of_reserved_mem_device_release(dev); return 0; } static const struct of_device_id aspeed_video_of_match[] = { { .compatible = "aspeed,ast2400-video-engine" }, { .compatible = "aspeed,ast2500-video-engine" }, {} }; MODULE_DEVICE_TABLE(of, aspeed_video_of_match); static struct platform_driver aspeed_video_driver = { .driver = { .name = DEVICE_NAME, .of_match_table = aspeed_video_of_match, }, .probe = aspeed_video_probe, .remove = aspeed_video_remove, }; module_platform_driver(aspeed_video_driver); MODULE_DESCRIPTION("ASPEED Video Engine Driver"); MODULE_AUTHOR("Eddie James"); MODULE_LICENSE("GPL v2");
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