Commit 704a84cc authored by Ezequiel Garcia's avatar Ezequiel Garcia Committed by Mauro Carvalho Chehab

[media] media: Support Intersil/Techwell TW686x-based video capture cards

This commit introduces the support for the Techwell TW686x video
capture IC. This hardware supports a few DMA modes, including
scatter-gather and frame (contiguous).

This commit makes little use of the DMA engine and instead has
a memcpy based implementation. DMA frame and scatter-gather modes
support may be added in the future.

Currently supported chips:
- TW6864 (4 video channels),
- TW6865 (4 video channels, not tested, second generation chip),
- TW6868 (8 video channels but only 4 first channels using
           built-in video decoder are supported, not tested),
- TW6869 (8 video channels, second generation chip).

[mchehab@osg.samsung.com: make checkpatch happy by using "unsigned int"
  instead  of just "unsigned"]
Cc: Krzysztof Halasa <khalasa@piap.pl>
Signed-off-by: default avatarEzequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Tested-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 0ff59f31
......@@ -11258,6 +11258,14 @@ W: https://linuxtv.org
S: Odd Fixes
F: drivers/media/pci/tw68/
TW686X VIDEO4LINUX DRIVER
M: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
L: linux-media@vger.kernel.org
T: git git://linuxtv.org/media_tree.git
W: http://linuxtv.org
S: Maintained
F: drivers/media/pci/tw686x/
TPM DEVICE DRIVER
M: Peter Huewe <peterhuewe@gmx.de>
M: Marcel Selhorst <tpmdd@selhorst.net>
......
......@@ -14,6 +14,7 @@ source "drivers/media/pci/meye/Kconfig"
source "drivers/media/pci/solo6x10/Kconfig"
source "drivers/media/pci/sta2x11/Kconfig"
source "drivers/media/pci/tw68/Kconfig"
source "drivers/media/pci/tw686x/Kconfig"
source "drivers/media/pci/zoran/Kconfig"
endif
......
......@@ -25,6 +25,7 @@ obj-$(CONFIG_VIDEO_BT848) += bt8xx/
obj-$(CONFIG_VIDEO_SAA7134) += saa7134/
obj-$(CONFIG_VIDEO_SAA7164) += saa7164/
obj-$(CONFIG_VIDEO_TW68) += tw68/
obj-$(CONFIG_VIDEO_TW686X) += tw686x/
obj-$(CONFIG_VIDEO_DT3155) += dt3155/
obj-$(CONFIG_VIDEO_MEYE) += meye/
obj-$(CONFIG_STA2X11_VIP) += sta2x11/
......
config VIDEO_TW686X
tristate "Intersil/Techwell TW686x video capture cards"
depends on PCI && VIDEO_DEV && VIDEO_V4L2 && SND
depends on HAS_DMA
select VIDEOBUF2_VMALLOC
select SND_PCM
help
Support for Intersil/Techwell TW686x-based frame grabber cards.
Currently supported chips:
- TW6864 (4 video channels),
- TW6865 (4 video channels, not tested, second generation chip),
- TW6868 (8 video channels but only 4 first channels using
built-in video decoder are supported, not tested),
- TW6869 (8 video channels, second generation chip).
To compile this driver as a module, choose M here: the module
will be named tw686x.
tw686x-objs := tw686x-core.o tw686x-video.o tw686x-audio.o
obj-$(CONFIG_VIDEO_TW686X) += tw686x.o
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/* DMA controller registers */
#define REG8_1(a0) ((const u16[8]) { a0, a0 + 1, a0 + 2, a0 + 3, \
a0 + 4, a0 + 5, a0 + 6, a0 + 7})
#define REG8_2(a0) ((const u16[8]) { a0, a0 + 2, a0 + 4, a0 + 6, \
a0 + 8, a0 + 0xa, a0 + 0xc, a0 + 0xe})
#define REG8_8(a0) ((const u16[8]) { a0, a0 + 8, a0 + 0x10, a0 + 0x18, \
a0 + 0x20, a0 + 0x28, a0 + 0x30, \
a0 + 0x38})
#define INT_STATUS 0x00
#define PB_STATUS 0x01
#define DMA_CMD 0x02
#define VIDEO_FIFO_STATUS 0x03
#define VIDEO_CHANNEL_ID 0x04
#define VIDEO_PARSER_STATUS 0x05
#define SYS_SOFT_RST 0x06
#define DMA_PAGE_TABLE0_ADDR ((const u16[8]) { 0x08, 0xd0, 0xd2, 0xd4, \
0xd6, 0xd8, 0xda, 0xdc })
#define DMA_PAGE_TABLE1_ADDR ((const u16[8]) { 0x09, 0xd1, 0xd3, 0xd5, \
0xd7, 0xd9, 0xdb, 0xdd })
#define DMA_CHANNEL_ENABLE 0x0a
#define DMA_CONFIG 0x0b
#define DMA_TIMER_INTERVAL 0x0c
#define DMA_CHANNEL_TIMEOUT 0x0d
#define VDMA_CHANNEL_CONFIG REG8_1(0x10)
#define ADMA_P_ADDR REG8_2(0x18)
#define ADMA_B_ADDR REG8_2(0x19)
#define DMA10_P_ADDR 0x28
#define DMA10_B_ADDR 0x29
#define VIDEO_CONTROL1 0x2a
#define VIDEO_CONTROL2 0x2b
#define AUDIO_CONTROL1 0x2c
#define AUDIO_CONTROL2 0x2d
#define PHASE_REF 0x2e
#define GPIO_REG 0x2f
#define INTL_HBAR_CTRL REG8_1(0x30)
#define AUDIO_CONTROL3 0x38
#define VIDEO_FIELD_CTRL REG8_1(0x39)
#define HSCALER_CTRL REG8_1(0x42)
#define VIDEO_SIZE REG8_1(0x4A)
#define VIDEO_SIZE_F2 REG8_1(0x52)
#define MD_CONF REG8_1(0x60)
#define MD_INIT REG8_1(0x68)
#define MD_MAP0 REG8_1(0x70)
#define VDMA_P_ADDR REG8_8(0x80) /* not used in DMA SG mode */
#define VDMA_WHP REG8_8(0x81)
#define VDMA_B_ADDR REG8_8(0x82)
#define VDMA_F2_P_ADDR REG8_8(0x84)
#define VDMA_F2_WHP REG8_8(0x85)
#define VDMA_F2_B_ADDR REG8_8(0x86)
#define EP_REG_ADDR 0xfe
#define EP_REG_DATA 0xff
/* Video decoder registers */
#define VDREG8(a0) ((const u16[8]) { \
a0 + 0x000, a0 + 0x010, a0 + 0x020, a0 + 0x030, \
a0 + 0x100, a0 + 0x110, a0 + 0x120, a0 + 0x130})
#define VIDSTAT VDREG8(0x100)
#define BRIGHT VDREG8(0x101)
#define CONTRAST VDREG8(0x102)
#define SHARPNESS VDREG8(0x103)
#define SAT_U VDREG8(0x104)
#define SAT_V VDREG8(0x105)
#define HUE VDREG8(0x106)
#define CROP_HI VDREG8(0x107)
#define VDELAY_LO VDREG8(0x108)
#define VACTIVE_LO VDREG8(0x109)
#define HDELAY_LO VDREG8(0x10a)
#define HACTIVE_LO VDREG8(0x10b)
#define MVSN VDREG8(0x10c)
#define STATUS2 VDREG8(0x10d)
#define SDT VDREG8(0x10e)
#define SDT_EN VDREG8(0x10f)
#define VSCALE_LO VDREG8(0x144)
#define SCALE_HI VDREG8(0x145)
#define HSCALE_LO VDREG8(0x146)
#define F2CROP_HI VDREG8(0x147)
#define F2VDELAY_LO VDREG8(0x148)
#define F2VACTIVE_LO VDREG8(0x149)
#define F2HDELAY_LO VDREG8(0x14a)
#define F2HACTIVE_LO VDREG8(0x14b)
#define F2VSCALE_LO VDREG8(0x14c)
#define F2SCALE_HI VDREG8(0x14d)
#define F2HSCALE_LO VDREG8(0x14e)
#define F2CNT VDREG8(0x14f)
#define VDREG2(a0) ((const u16[2]) { a0, a0 + 0x100 })
#define SRST VDREG2(0x180)
#define ACNTL VDREG2(0x181)
#define ACNTL2 VDREG2(0x182)
#define CNTRL1 VDREG2(0x183)
#define CKHY VDREG2(0x184)
#define SHCOR VDREG2(0x185)
#define CORING VDREG2(0x186)
#define CLMPG VDREG2(0x187)
#define IAGC VDREG2(0x188)
#define VCTRL1 VDREG2(0x18f)
#define MISC1 VDREG2(0x194)
#define LOOP VDREG2(0x195)
#define MISC2 VDREG2(0x196)
#define CLMD VDREG2(0x197)
#define ANPWRDOWN VDREG2(0x1ce)
#define AIGAIN ((const u16[8]) { 0x1d0, 0x1d1, 0x1d2, 0x1d3, \
0x2d0, 0x2d1, 0x2d2, 0x2d3 })
#define SYS_MODE_DMA_SHIFT 13
#define DMA_CMD_ENABLE BIT(31)
#define INT_STATUS_DMA_TOUT BIT(17)
#define TW686X_VIDSTAT_HLOCK BIT(6)
#define TW686X_VIDSTAT_VDLOSS BIT(7)
#define TW686X_STD_NTSC_M 0
#define TW686X_STD_PAL 1
#define TW686X_STD_SECAM 2
#define TW686X_STD_NTSC_443 3
#define TW686X_STD_PAL_M 4
#define TW686X_STD_PAL_CN 5
#define TW686X_STD_PAL_60 6
#define TW686X_FIFO_ERROR(x) (x & ~(0xff))
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/*
* 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);
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