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25763b3c | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
704a84cc EG |
2 | /* |
3 | * Copyright (C) 2015 VanguardiaSur - www.vanguardiasur.com.ar | |
4 | * | |
5 | * Copyright (C) 2015 Industrial Research Institute for Automation | |
6 | * and Measurements PIAP | |
7 | * Written by Krzysztof Ha?asa | |
704a84cc EG |
8 | */ |
9 | ||
10 | #include <linux/mutex.h> | |
11 | #include <linux/pci.h> | |
12 | #include <linux/timer.h> | |
13 | #include <linux/videodev2.h> | |
14 | #include <media/v4l2-common.h> | |
15 | #include <media/v4l2-ctrls.h> | |
16 | #include <media/v4l2-device.h> | |
17 | #include <media/v4l2-ioctl.h> | |
18 | #include <media/videobuf2-v4l2.h> | |
19 | #include <sound/pcm.h> | |
20 | ||
21 | #include "tw686x-regs.h" | |
22 | ||
23 | #define TYPE_MAX_CHANNELS 0x0f | |
24 | #define TYPE_SECOND_GEN 0x10 | |
25 | #define TW686X_DEF_PHASE_REF 0x1518 | |
26 | ||
704a84cc EG |
27 | #define TW686X_AUDIO_PAGE_MAX 16 |
28 | #define TW686X_AUDIO_PERIODS_MIN 2 | |
29 | #define TW686X_AUDIO_PERIODS_MAX TW686X_AUDIO_PAGE_MAX | |
30 | ||
f8afaa8d | 31 | #define TW686X_DMA_MODE_MEMCPY 0 |
11a16974 | 32 | #define TW686X_DMA_MODE_CONTIG 1 |
34e2acc8 | 33 | #define TW686X_DMA_MODE_SG 2 |
f8afaa8d | 34 | |
704a84cc EG |
35 | struct tw686x_format { |
36 | char *name; | |
37 | unsigned int fourcc; | |
38 | unsigned int depth; | |
39 | unsigned int mode; | |
40 | }; | |
41 | ||
42 | struct tw686x_dma_desc { | |
43 | dma_addr_t phys; | |
44 | void *virt; | |
45 | unsigned int size; | |
46 | }; | |
47 | ||
34e2acc8 EG |
48 | struct tw686x_sg_desc { |
49 | /* 3 MSBits for flags, 13 LSBits for length */ | |
50 | __le32 flags_length; | |
51 | __le32 phys; | |
52 | }; | |
53 | ||
704a84cc EG |
54 | struct tw686x_audio_buf { |
55 | dma_addr_t dma; | |
56 | void *virt; | |
57 | struct list_head list; | |
58 | }; | |
59 | ||
60 | struct tw686x_v4l2_buf { | |
61 | struct vb2_v4l2_buffer vb; | |
62 | struct list_head list; | |
63 | }; | |
64 | ||
65 | struct tw686x_audio_channel { | |
66 | struct tw686x_dev *dev; | |
67 | struct snd_pcm_substream *ss; | |
68 | unsigned int ch; | |
69 | struct tw686x_audio_buf *curr_bufs[2]; | |
70 | struct tw686x_dma_desc dma_descs[2]; | |
71 | dma_addr_t ptr; | |
72 | ||
73 | struct tw686x_audio_buf buf[TW686X_AUDIO_PAGE_MAX]; | |
74 | struct list_head buf_list; | |
75 | spinlock_t lock; | |
76 | }; | |
77 | ||
78 | struct tw686x_video_channel { | |
79 | struct tw686x_dev *dev; | |
80 | ||
81 | struct vb2_queue vidq; | |
82 | struct list_head vidq_queued; | |
83 | struct video_device *device; | |
84 | struct tw686x_v4l2_buf *curr_bufs[2]; | |
85 | struct tw686x_dma_desc dma_descs[2]; | |
34e2acc8 | 86 | struct tw686x_sg_desc *sg_descs[2]; |
704a84cc EG |
87 | |
88 | struct v4l2_ctrl_handler ctrl_handler; | |
89 | const struct tw686x_format *format; | |
90 | struct mutex vb_mutex; | |
91 | spinlock_t qlock; | |
92 | v4l2_std_id video_standard; | |
93 | unsigned int width, height; | |
94 | unsigned int h_halve, v_halve; | |
95 | unsigned int ch; | |
96 | unsigned int num; | |
97 | unsigned int fps; | |
98 | unsigned int input; | |
99 | unsigned int sequence; | |
100 | unsigned int pb; | |
101 | bool no_signal; | |
102 | }; | |
103 | ||
f8afaa8d EG |
104 | struct tw686x_dma_ops { |
105 | int (*setup)(struct tw686x_dev *dev); | |
f8afaa8d EG |
106 | int (*alloc)(struct tw686x_video_channel *vc, unsigned int pb); |
107 | void (*free)(struct tw686x_video_channel *vc, unsigned int pb); | |
108 | void (*buf_refill)(struct tw686x_video_channel *vc, unsigned int pb); | |
109 | const struct vb2_mem_ops *mem_ops; | |
110 | enum v4l2_field field; | |
111 | u32 hw_dma_mode; | |
112 | }; | |
113 | ||
704a84cc EG |
114 | /** |
115 | * struct tw686x_dev - global device status | |
116 | * @lock: spinlock controlling access to the | |
117 | * shared device registers (DMA enable/disable). | |
118 | */ | |
119 | struct tw686x_dev { | |
120 | spinlock_t lock; | |
121 | ||
122 | struct v4l2_device v4l2_dev; | |
123 | struct snd_card *snd_card; | |
124 | ||
125 | char name[32]; | |
126 | unsigned int type; | |
f8afaa8d | 127 | unsigned int dma_mode; |
704a84cc EG |
128 | struct pci_dev *pci_dev; |
129 | __u32 __iomem *mmio; | |
130 | ||
f8afaa8d | 131 | const struct tw686x_dma_ops *dma_ops; |
704a84cc EG |
132 | struct tw686x_video_channel *video_channels; |
133 | struct tw686x_audio_channel *audio_channels; | |
134 | ||
447d7c32 EG |
135 | /* Per-device audio parameters */ |
136 | int audio_rate; | |
137 | int period_size; | |
6deab6fe | 138 | int audio_enabled; |
704a84cc EG |
139 | |
140 | struct timer_list dma_delay_timer; | |
141 | u32 pending_dma_en; /* must be protected by lock */ | |
142 | u32 pending_dma_cmd; /* must be protected by lock */ | |
143 | }; | |
144 | ||
145 | static inline uint32_t reg_read(struct tw686x_dev *dev, unsigned int reg) | |
146 | { | |
147 | return readl(dev->mmio + reg); | |
148 | } | |
149 | ||
150 | static inline void reg_write(struct tw686x_dev *dev, unsigned int reg, | |
151 | uint32_t value) | |
152 | { | |
153 | writel(value, dev->mmio + reg); | |
154 | } | |
155 | ||
156 | static inline unsigned int max_channels(struct tw686x_dev *dev) | |
157 | { | |
158 | return dev->type & TYPE_MAX_CHANNELS; /* 4 or 8 channels */ | |
159 | } | |
160 | ||
34e2acc8 EG |
161 | static inline unsigned is_second_gen(struct tw686x_dev *dev) |
162 | { | |
163 | /* each channel has its own DMA SG table */ | |
164 | return dev->type & TYPE_SECOND_GEN; | |
165 | } | |
166 | ||
704a84cc EG |
167 | void tw686x_enable_channel(struct tw686x_dev *dev, unsigned int channel); |
168 | void tw686x_disable_channel(struct tw686x_dev *dev, unsigned int channel); | |
169 | ||
170 | int tw686x_video_init(struct tw686x_dev *dev); | |
171 | void tw686x_video_free(struct tw686x_dev *dev); | |
172 | void tw686x_video_irq(struct tw686x_dev *dev, unsigned long requests, | |
173 | unsigned int pb_status, unsigned int fifo_status, | |
174 | unsigned int *reset_ch); | |
175 | ||
176 | int tw686x_audio_init(struct tw686x_dev *dev); | |
177 | void tw686x_audio_free(struct tw686x_dev *dev); | |
178 | void tw686x_audio_irq(struct tw686x_dev *dev, unsigned long requests, | |
179 | unsigned int pb_status); |