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path: root/drivers/media/pci/tw686x/tw686x.h
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Diffstat (limited to 'drivers/media/pci/tw686x/tw686x.h')
-rw-r--r--drivers/media/pci/tw686x/tw686x.h158
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/media/pci/tw686x/tw686x.h b/drivers/media/pci/tw686x/tw686x.h
new file mode 100644
index 000000000..44b5755ac
--- /dev/null
+++ b/drivers/media/pci/tw686x/tw686x.h
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2015 VanguardiaSur - www.vanguardiasur.com.ar
+ *
+ * Copyright (C) 2015 Industrial Research Institute for Automation
+ * and Measurements PIAP
+ * Written by Krzysztof Ha?asa
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#include <linux/mutex.h>
+#include <linux/pci.h>
+#include <linux/timer.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-v4l2.h>
+#include <sound/pcm.h>
+
+#include "tw686x-regs.h"
+
+#define TYPE_MAX_CHANNELS 0x0f
+#define TYPE_SECOND_GEN 0x10
+#define TW686X_DEF_PHASE_REF 0x1518
+
+#define TW686X_FIELD_MODE 0x3
+#define TW686X_FRAME_MODE 0x2
+/* 0x1 is reserved */
+#define TW686X_SG_MODE 0x0
+
+#define TW686X_AUDIO_PAGE_SZ 4096
+#define TW686X_AUDIO_PAGE_MAX 16
+#define TW686X_AUDIO_PERIODS_MIN 2
+#define TW686X_AUDIO_PERIODS_MAX TW686X_AUDIO_PAGE_MAX
+
+struct tw686x_format {
+ char *name;
+ unsigned int fourcc;
+ unsigned int depth;
+ unsigned int mode;
+};
+
+struct tw686x_dma_desc {
+ dma_addr_t phys;
+ void *virt;
+ unsigned int size;
+};
+
+struct tw686x_audio_buf {
+ dma_addr_t dma;
+ void *virt;
+ struct list_head list;
+};
+
+struct tw686x_v4l2_buf {
+ struct vb2_v4l2_buffer vb;
+ struct list_head list;
+};
+
+struct tw686x_audio_channel {
+ struct tw686x_dev *dev;
+ struct snd_pcm_substream *ss;
+ unsigned int ch;
+ struct tw686x_audio_buf *curr_bufs[2];
+ struct tw686x_dma_desc dma_descs[2];
+ dma_addr_t ptr;
+
+ struct tw686x_audio_buf buf[TW686X_AUDIO_PAGE_MAX];
+ struct list_head buf_list;
+ spinlock_t lock;
+};
+
+struct tw686x_video_channel {
+ struct tw686x_dev *dev;
+
+ struct vb2_queue vidq;
+ struct list_head vidq_queued;
+ struct video_device *device;
+ struct tw686x_v4l2_buf *curr_bufs[2];
+ struct tw686x_dma_desc dma_descs[2];
+
+ struct v4l2_ctrl_handler ctrl_handler;
+ const struct tw686x_format *format;
+ struct mutex vb_mutex;
+ spinlock_t qlock;
+ v4l2_std_id video_standard;
+ unsigned int width, height;
+ unsigned int h_halve, v_halve;
+ unsigned int ch;
+ unsigned int num;
+ unsigned int fps;
+ unsigned int input;
+ unsigned int sequence;
+ unsigned int pb;
+ bool no_signal;
+};
+
+/**
+ * struct tw686x_dev - global device status
+ * @lock: spinlock controlling access to the
+ * shared device registers (DMA enable/disable).
+ */
+struct tw686x_dev {
+ spinlock_t lock;
+
+ struct v4l2_device v4l2_dev;
+ struct snd_card *snd_card;
+
+ char name[32];
+ unsigned int type;
+ struct pci_dev *pci_dev;
+ __u32 __iomem *mmio;
+
+ void *alloc_ctx;
+
+ struct tw686x_video_channel *video_channels;
+ struct tw686x_audio_channel *audio_channels;
+
+ int audio_rate; /* per-device value */
+
+ struct timer_list dma_delay_timer;
+ u32 pending_dma_en; /* must be protected by lock */
+ u32 pending_dma_cmd; /* must be protected by lock */
+};
+
+static inline uint32_t reg_read(struct tw686x_dev *dev, unsigned int reg)
+{
+ return readl(dev->mmio + reg);
+}
+
+static inline void reg_write(struct tw686x_dev *dev, unsigned int reg,
+ uint32_t value)
+{
+ writel(value, dev->mmio + reg);
+}
+
+static inline unsigned int max_channels(struct tw686x_dev *dev)
+{
+ return dev->type & TYPE_MAX_CHANNELS; /* 4 or 8 channels */
+}
+
+void tw686x_enable_channel(struct tw686x_dev *dev, unsigned int channel);
+void tw686x_disable_channel(struct tw686x_dev *dev, unsigned int channel);
+
+int tw686x_video_init(struct tw686x_dev *dev);
+void tw686x_video_free(struct tw686x_dev *dev);
+void tw686x_video_irq(struct tw686x_dev *dev, unsigned long requests,
+ unsigned int pb_status, unsigned int fifo_status,
+ unsigned int *reset_ch);
+
+int tw686x_audio_init(struct tw686x_dev *dev);
+void tw686x_audio_free(struct tw686x_dev *dev);
+void tw686x_audio_irq(struct tw686x_dev *dev, unsigned long requests,
+ unsigned int pb_status);