4c62e9764a
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1550 lines
38 KiB
C
1550 lines
38 KiB
C
/*
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* This is the driver for the STA2x11 Video Input Port.
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*
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* Copyright (C) 2010 WindRiver Systems, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Author: Andreas Kies <andreas.kies@windriver.com>
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* Vlad Lungu <vlad.lungu@windriver.com>
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*
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/vmalloc.h>
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#include <linux/videodev2.h>
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#include <linux/kmod.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <linux/mutex.h>
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/delay.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/videobuf-dma-contig.h>
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#include "sta2x11_vip.h"
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#define DRV_NAME "sta2x11_vip"
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#define DRV_VERSION "1.3"
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#ifndef PCI_DEVICE_ID_STMICRO_VIP
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#define PCI_DEVICE_ID_STMICRO_VIP 0xCC0D
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#endif
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#define MAX_FRAMES 4
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/*Register offsets*/
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#define DVP_CTL 0x00
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#define DVP_TFO 0x04
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#define DVP_TFS 0x08
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#define DVP_BFO 0x0C
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#define DVP_BFS 0x10
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#define DVP_VTP 0x14
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#define DVP_VBP 0x18
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#define DVP_VMP 0x1C
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#define DVP_ITM 0x98
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#define DVP_ITS 0x9C
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#define DVP_STA 0xA0
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#define DVP_HLFLN 0xA8
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#define DVP_RGB 0xC0
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#define DVP_PKZ 0xF0
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/*Register fields*/
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#define DVP_CTL_ENA 0x00000001
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#define DVP_CTL_RST 0x80000000
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#define DVP_CTL_DIS (~0x00040001)
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#define DVP_IT_VSB 0x00000008
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#define DVP_IT_VST 0x00000010
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#define DVP_IT_FIFO 0x00000020
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#define DVP_HLFLN_SD 0x00000001
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#define REG_WRITE(vip, reg, value) iowrite32((value), (vip->iomem)+(reg))
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#define REG_READ(vip, reg) ioread32((vip->iomem)+(reg))
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#define SAVE_COUNT 8
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#define AUX_COUNT 3
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#define IRQ_COUNT 1
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/**
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* struct sta2x11_vip - All internal data for one instance of device
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* @v4l2_dev: device registered in v4l layer
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* @video_dev: properties of our device
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* @pdev: PCI device
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* @adapter: contains I2C adapter information
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* @register_save_area: All relevant register are saved here during suspend
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* @decoder: contains information about video DAC
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* @format: pixel format, fixed UYVY
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* @std: video standard (e.g. PAL/NTSC)
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* @input: input line for video signal ( 0 or 1 )
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* @users: Number of open of device ( max. 1 )
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* @disabled: Device is in power down state
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* @mutex: ensures exclusive opening of device
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* @slock: for excluse acces of registers
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* @vb_vidq: queue maintained by videobuf layer
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* @capture: linked list of capture buffer
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* @active: struct videobuf_buffer currently beingg filled
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* @started: device is ready to capture frame
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* @closing: device will be shut down
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* @tcount: Number of top frames
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* @bcount: Number of bottom frames
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* @overflow: Number of FIFO overflows
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* @mem_spare: small buffer of unused frame
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* @dma_spare: dma addres of mem_spare
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* @iomem: hardware base address
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* @config: I2C and gpio config from platform
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*
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* All non-local data is accessed via this structure.
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*/
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struct sta2x11_vip {
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struct v4l2_device v4l2_dev;
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struct video_device *video_dev;
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struct pci_dev *pdev;
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struct i2c_adapter *adapter;
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unsigned int register_save_area[IRQ_COUNT + SAVE_COUNT + AUX_COUNT];
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struct v4l2_subdev *decoder;
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struct v4l2_pix_format format;
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v4l2_std_id std;
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unsigned int input;
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int users;
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int disabled;
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struct mutex mutex; /* exclusive access during open */
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spinlock_t slock; /* spin lock for hardware and queue access */
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struct videobuf_queue vb_vidq;
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struct list_head capture;
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struct videobuf_buffer *active;
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int started, closing, tcount, bcount;
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int overflow;
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void *mem_spare;
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dma_addr_t dma_spare;
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void *iomem;
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struct vip_config *config;
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};
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static const unsigned int registers_to_save[AUX_COUNT] = {
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DVP_HLFLN, DVP_RGB, DVP_PKZ
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};
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static struct v4l2_pix_format formats_50[] = {
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{ /*PAL interlaced */
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.width = 720,
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.height = 576,
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.pixelformat = V4L2_PIX_FMT_UYVY,
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.field = V4L2_FIELD_INTERLACED,
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.bytesperline = 720 * 2,
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.sizeimage = 720 * 2 * 576,
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.colorspace = V4L2_COLORSPACE_SMPTE170M},
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{ /*PAL top */
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.width = 720,
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.height = 288,
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.pixelformat = V4L2_PIX_FMT_UYVY,
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.field = V4L2_FIELD_TOP,
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.bytesperline = 720 * 2,
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.sizeimage = 720 * 2 * 288,
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.colorspace = V4L2_COLORSPACE_SMPTE170M},
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{ /*PAL bottom */
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.width = 720,
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.height = 288,
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.pixelformat = V4L2_PIX_FMT_UYVY,
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.field = V4L2_FIELD_BOTTOM,
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.bytesperline = 720 * 2,
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.sizeimage = 720 * 2 * 288,
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.colorspace = V4L2_COLORSPACE_SMPTE170M},
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};
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static struct v4l2_pix_format formats_60[] = {
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{ /*NTSC interlaced */
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.width = 720,
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.height = 480,
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.pixelformat = V4L2_PIX_FMT_UYVY,
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.field = V4L2_FIELD_INTERLACED,
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.bytesperline = 720 * 2,
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.sizeimage = 720 * 2 * 480,
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.colorspace = V4L2_COLORSPACE_SMPTE170M},
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{ /*NTSC top */
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.width = 720,
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.height = 240,
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.pixelformat = V4L2_PIX_FMT_UYVY,
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.field = V4L2_FIELD_TOP,
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.bytesperline = 720 * 2,
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.sizeimage = 720 * 2 * 240,
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.colorspace = V4L2_COLORSPACE_SMPTE170M},
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{ /*NTSC bottom */
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.width = 720,
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.height = 240,
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.pixelformat = V4L2_PIX_FMT_UYVY,
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.field = V4L2_FIELD_BOTTOM,
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.bytesperline = 720 * 2,
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.sizeimage = 720 * 2 * 240,
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.colorspace = V4L2_COLORSPACE_SMPTE170M},
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};
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/**
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* buf_setup - Get size and number of video buffer
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* @vq: queue in videobuf
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* @count: Number of buffers (1..MAX_FRAMES).
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* 0 use default value.
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* @size: size of buffer in bytes
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*
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* returns size and number of buffers
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* a preset value of 0 returns the default number.
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* return value: 0, always succesfull.
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*/
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static int buf_setup(struct videobuf_queue *vq, unsigned int *count,
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unsigned int *size)
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{
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struct sta2x11_vip *vip = vq->priv_data;
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*size = vip->format.width * vip->format.height * 2;
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if (0 == *count || MAX_FRAMES < *count)
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*count = MAX_FRAMES;
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return 0;
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};
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/**
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* buf_prepare - prepare buffer for usage
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* @vq: queue in videobuf layer
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* @vb: buffer to be prepared
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* @field: type of video data (interlaced/non-interlaced)
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*
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* Allocate or realloc buffer
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* return value: 0, successful.
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*
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* -EINVAL, supplied buffer is too small.
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*
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* other, buffer could not be locked.
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*/
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static int buf_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
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enum v4l2_field field)
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{
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struct sta2x11_vip *vip = vq->priv_data;
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int ret;
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vb->size = vip->format.width * vip->format.height * 2;
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if ((0 != vb->baddr) && (vb->bsize < vb->size))
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return -EINVAL;
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vb->width = vip->format.width;
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vb->height = vip->format.height;
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vb->field = field;
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if (VIDEOBUF_NEEDS_INIT == vb->state) {
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ret = videobuf_iolock(vq, vb, NULL);
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if (ret)
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goto fail;
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}
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vb->state = VIDEOBUF_PREPARED;
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return 0;
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fail:
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videobuf_dma_contig_free(vq, vb);
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vb->state = VIDEOBUF_NEEDS_INIT;
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return ret;
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}
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/**
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* buf_queu - queue buffer for filling
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* @vq: queue in videobuf layer
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* @vb: buffer to be queued
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*
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* if capturing is already running, the buffer will be queued. Otherwise
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* capture is started and the buffer is used directly.
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*/
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static void buf_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
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{
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struct sta2x11_vip *vip = vq->priv_data;
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u32 dma;
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vb->state = VIDEOBUF_QUEUED;
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if (vip->active) {
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list_add_tail(&vb->queue, &vip->capture);
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return;
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}
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vip->started = 1;
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vip->tcount = 0;
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vip->bcount = 0;
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vip->active = vb;
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vb->state = VIDEOBUF_ACTIVE;
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dma = videobuf_to_dma_contig(vb);
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REG_WRITE(vip, DVP_TFO, (0 << 16) | (0));
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/* despite of interlace mode, upper and lower frames start at zero */
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REG_WRITE(vip, DVP_BFO, (0 << 16) | (0));
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switch (vip->format.field) {
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case V4L2_FIELD_INTERLACED:
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REG_WRITE(vip, DVP_TFS,
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((vip->format.height / 2 - 1) << 16) |
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(2 * vip->format.width - 1));
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REG_WRITE(vip, DVP_BFS, ((vip->format.height / 2 - 1) << 16) |
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(2 * vip->format.width - 1));
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REG_WRITE(vip, DVP_VTP, dma);
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REG_WRITE(vip, DVP_VBP, dma + vip->format.width * 2);
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REG_WRITE(vip, DVP_VMP, 4 * vip->format.width);
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break;
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case V4L2_FIELD_TOP:
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REG_WRITE(vip, DVP_TFS,
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((vip->format.height - 1) << 16) |
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(2 * vip->format.width - 1));
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REG_WRITE(vip, DVP_BFS, ((0) << 16) |
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(2 * vip->format.width - 1));
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REG_WRITE(vip, DVP_VTP, dma);
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REG_WRITE(vip, DVP_VBP, dma);
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REG_WRITE(vip, DVP_VMP, 2 * vip->format.width);
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break;
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case V4L2_FIELD_BOTTOM:
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REG_WRITE(vip, DVP_TFS, ((0) << 16) |
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(2 * vip->format.width - 1));
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REG_WRITE(vip, DVP_BFS,
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((vip->format.height) << 16) |
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(2 * vip->format.width - 1));
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REG_WRITE(vip, DVP_VTP, dma);
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REG_WRITE(vip, DVP_VBP, dma);
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REG_WRITE(vip, DVP_VMP, 2 * vip->format.width);
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break;
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default:
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pr_warning("VIP: unknown field format\n");
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return;
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}
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REG_WRITE(vip, DVP_CTL, DVP_CTL_ENA);
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}
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/**
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* buff_release - release buffer
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* @vq: queue in videobuf layer
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* @vb: buffer to be released
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*
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* release buffer in videobuf layer
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*/
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static void buf_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
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{
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videobuf_dma_contig_free(vq, vb);
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vb->state = VIDEOBUF_NEEDS_INIT;
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}
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static struct videobuf_queue_ops vip_qops = {
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.buf_setup = buf_setup,
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.buf_prepare = buf_prepare,
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.buf_queue = buf_queue,
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.buf_release = buf_release,
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};
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/**
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* vip_open - open video device
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* @file: descriptor of device
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*
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* open device, make sure it is only opened once.
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* return value: 0, no error.
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*
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* -EBUSY, device is already opened
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*
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* -ENOMEM, no memory for auxiliary DMA buffer
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*/
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static int vip_open(struct file *file)
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{
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struct video_device *dev = video_devdata(file);
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struct sta2x11_vip *vip = video_get_drvdata(dev);
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mutex_lock(&vip->mutex);
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vip->users++;
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if (vip->users > 1) {
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vip->users--;
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mutex_unlock(&vip->mutex);
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return -EBUSY;
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}
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file->private_data = dev;
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vip->overflow = 0;
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vip->started = 0;
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vip->closing = 0;
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vip->active = NULL;
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INIT_LIST_HEAD(&vip->capture);
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vip->mem_spare = dma_alloc_coherent(&vip->pdev->dev, 64,
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&vip->dma_spare, GFP_KERNEL);
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if (!vip->mem_spare) {
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vip->users--;
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mutex_unlock(&vip->mutex);
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return -ENOMEM;
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}
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mutex_unlock(&vip->mutex);
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videobuf_queue_dma_contig_init_cached(&vip->vb_vidq,
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&vip_qops,
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&vip->pdev->dev,
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&vip->slock,
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V4L2_BUF_TYPE_VIDEO_CAPTURE,
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V4L2_FIELD_INTERLACED,
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sizeof(struct videobuf_buffer),
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vip, NULL);
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REG_READ(vip, DVP_ITS);
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REG_WRITE(vip, DVP_HLFLN, DVP_HLFLN_SD);
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REG_WRITE(vip, DVP_ITM, DVP_IT_VSB | DVP_IT_VST);
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REG_WRITE(vip, DVP_CTL, DVP_CTL_RST);
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REG_WRITE(vip, DVP_CTL, 0);
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REG_READ(vip, DVP_ITS);
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return 0;
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}
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/**
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* vip_close - close video device
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* @file: descriptor of device
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*
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* close video device, wait until all pending operations are finished
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* ( maximum FRAME_MAX buffers pending )
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* Turn off interrupts.
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*
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* return value: 0, always succesful.
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*/
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static int vip_close(struct file *file)
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{
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struct video_device *dev = video_devdata(file);
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struct sta2x11_vip *vip = video_get_drvdata(dev);
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vip->closing = 1;
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if (vip->active)
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videobuf_waiton(&vip->vb_vidq, vip->active, 0, 0);
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spin_lock_irq(&vip->slock);
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REG_WRITE(vip, DVP_ITM, 0);
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REG_WRITE(vip, DVP_CTL, DVP_CTL_RST);
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REG_WRITE(vip, DVP_CTL, 0);
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REG_READ(vip, DVP_ITS);
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vip->started = 0;
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vip->active = NULL;
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spin_unlock_irq(&vip->slock);
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videobuf_stop(&vip->vb_vidq);
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videobuf_mmap_free(&vip->vb_vidq);
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dma_free_coherent(&vip->pdev->dev, 64, vip->mem_spare, vip->dma_spare);
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file->private_data = NULL;
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mutex_lock(&vip->mutex);
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vip->users--;
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mutex_unlock(&vip->mutex);
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return 0;
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}
|
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|
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/**
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* vip_read - read from video input
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* @file: descriptor of device
|
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* @data: user buffer
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* @count: number of bytes to be read
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* @ppos: position within stream
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*
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* read video data from video device.
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* handling is done in generic videobuf layer
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* return value: provided by videobuf layer
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*/
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static ssize_t vip_read(struct file *file, char __user *data,
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size_t count, loff_t *ppos)
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{
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struct video_device *dev = file->private_data;
|
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struct sta2x11_vip *vip = video_get_drvdata(dev);
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|
|
return videobuf_read_stream(&vip->vb_vidq, data, count, ppos, 0,
|
|
file->f_flags & O_NONBLOCK);
|
|
}
|
|
|
|
/**
|
|
* vip_mmap - map user buffer
|
|
* @file: descriptor of device
|
|
* @vma: user buffer
|
|
*
|
|
* map user space buffer into kernel mode, including DMA address.
|
|
* handling is done in generic videobuf layer.
|
|
* return value: provided by videobuf layer
|
|
*/
|
|
static int vip_mmap(struct file *file, struct vm_area_struct *vma)
|
|
{
|
|
struct video_device *dev = file->private_data;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return videobuf_mmap_mapper(&vip->vb_vidq, vma);
|
|
}
|
|
|
|
/**
|
|
* vip_poll - poll for event
|
|
* @file: descriptor of device
|
|
* @wait: contains events to be waited for
|
|
*
|
|
* wait for event related to video device.
|
|
* handling is done in generic videobuf layer.
|
|
* return value: provided by videobuf layer
|
|
*/
|
|
static unsigned int vip_poll(struct file *file, struct poll_table_struct *wait)
|
|
{
|
|
struct video_device *dev = file->private_data;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return videobuf_poll_stream(file, &vip->vb_vidq, wait);
|
|
}
|
|
|
|
/**
|
|
* vidioc_querycap - return capabilities of device
|
|
* @file: descriptor of device (not used)
|
|
* @priv: points to current videodevice
|
|
* @cap: contains return values
|
|
*
|
|
* the capabilities of the device are returned
|
|
*
|
|
* return value: 0, no error.
|
|
*/
|
|
static int vidioc_querycap(struct file *file, void *priv,
|
|
struct v4l2_capability *cap)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
memset(cap, 0, sizeof(struct v4l2_capability));
|
|
strcpy(cap->driver, DRV_NAME);
|
|
strcpy(cap->card, DRV_NAME);
|
|
cap->version = 0;
|
|
snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
|
|
pci_name(vip->pdev));
|
|
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
|
|
V4L2_CAP_STREAMING;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vidioc_s_std - set video standard
|
|
* @file: descriptor of device (not used)
|
|
* @priv: points to current videodevice
|
|
* @std: contains standard to be set
|
|
*
|
|
* the video standard is set
|
|
*
|
|
* return value: 0, no error.
|
|
*
|
|
* -EIO, no input signal detected
|
|
*
|
|
* other, returned from video DAC.
|
|
*/
|
|
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *std)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
v4l2_std_id oldstd = vip->std, newstd;
|
|
int status;
|
|
|
|
if (V4L2_STD_ALL == *std) {
|
|
v4l2_subdev_call(vip->decoder, core, s_std, *std);
|
|
ssleep(2);
|
|
v4l2_subdev_call(vip->decoder, video, querystd, &newstd);
|
|
v4l2_subdev_call(vip->decoder, video, g_input_status, &status);
|
|
if (status & V4L2_IN_ST_NO_SIGNAL)
|
|
return -EIO;
|
|
*std = vip->std = newstd;
|
|
if (oldstd != *std) {
|
|
if (V4L2_STD_525_60 & (*std))
|
|
vip->format = formats_60[0];
|
|
else
|
|
vip->format = formats_50[0];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (oldstd != *std) {
|
|
if (V4L2_STD_525_60 & (*std))
|
|
vip->format = formats_60[0];
|
|
else
|
|
vip->format = formats_50[0];
|
|
}
|
|
|
|
return v4l2_subdev_call(vip->decoder, core, s_std, *std);
|
|
}
|
|
|
|
/**
|
|
* vidioc_g_std - get video standard
|
|
* @file: descriptor of device (not used)
|
|
* @priv: points to current videodevice
|
|
* @std: contains return values
|
|
*
|
|
* the current video standard is returned
|
|
*
|
|
* return value: 0, no error.
|
|
*/
|
|
static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *std)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
*std = vip->std;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vidioc_querystd - get possible video standards
|
|
* @file: descriptor of device (not used)
|
|
* @priv: points to current videodevice
|
|
* @std: contains return values
|
|
*
|
|
* all possible video standards are returned
|
|
*
|
|
* return value: delivered by video DAC routine.
|
|
*/
|
|
static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *std)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return v4l2_subdev_call(vip->decoder, video, querystd, std);
|
|
|
|
}
|
|
|
|
/**
|
|
* vidioc_queryctl - get possible control settings
|
|
* @file: descriptor of device (not used)
|
|
* @priv: points to current videodevice
|
|
* @ctrl: contains return values
|
|
*
|
|
* return possible values for a control
|
|
* return value: delivered by video DAC routine.
|
|
*/
|
|
static int vidioc_queryctrl(struct file *file, void *priv,
|
|
struct v4l2_queryctrl *ctrl)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return v4l2_subdev_call(vip->decoder, core, queryctrl, ctrl);
|
|
}
|
|
|
|
/**
|
|
* vidioc_g_ctl - get control value
|
|
* @file: descriptor of device (not used)
|
|
* @priv: points to current videodevice
|
|
* @ctrl: contains return values
|
|
*
|
|
* return setting for a control value
|
|
* return value: delivered by video DAC routine.
|
|
*/
|
|
static int vidioc_g_ctrl(struct file *file, void *priv,
|
|
struct v4l2_control *ctrl)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return v4l2_subdev_call(vip->decoder, core, g_ctrl, ctrl);
|
|
}
|
|
|
|
/**
|
|
* vidioc_s_ctl - set control value
|
|
* @file: descriptor of device (not used)
|
|
* @priv: points to current videodevice
|
|
* @ctrl: contains value to be set
|
|
*
|
|
* set value for a specific control
|
|
* return value: delivered by video DAC routine.
|
|
*/
|
|
static int vidioc_s_ctrl(struct file *file, void *priv,
|
|
struct v4l2_control *ctrl)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return v4l2_subdev_call(vip->decoder, core, s_ctrl, ctrl);
|
|
}
|
|
|
|
/**
|
|
* vidioc_enum_input - return name of input line
|
|
* @file: descriptor of device (not used)
|
|
* @priv: points to current videodevice
|
|
* @inp: contains return values
|
|
*
|
|
* the user friendly name of the input line is returned
|
|
*
|
|
* return value: 0, no error.
|
|
*
|
|
* -EINVAL, input line number out of range
|
|
*/
|
|
static int vidioc_enum_input(struct file *file, void *priv,
|
|
struct v4l2_input *inp)
|
|
{
|
|
if (inp->index > 1)
|
|
return -EINVAL;
|
|
|
|
inp->type = V4L2_INPUT_TYPE_CAMERA;
|
|
inp->std = V4L2_STD_ALL;
|
|
sprintf(inp->name, "Camera %u", inp->index);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vidioc_s_input - set input line
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @i: new input line number
|
|
*
|
|
* the current active input line is set
|
|
*
|
|
* return value: 0, no error.
|
|
*
|
|
* -EINVAL, line number out of range
|
|
*/
|
|
static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
int ret;
|
|
|
|
if (i > 1)
|
|
return -EINVAL;
|
|
ret = v4l2_subdev_call(vip->decoder, video, s_routing, i, 0, 0);
|
|
|
|
if (!ret)
|
|
vip->input = i;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vidioc_g_input - return input line
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @i: returned input line number
|
|
*
|
|
* the current active input line is returned
|
|
*
|
|
* return value: always 0.
|
|
*/
|
|
static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
*i = vip->input;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vidioc_enum_fmt_vid_cap - return video capture format
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @f: returned format information
|
|
*
|
|
* returns name and format of video capture
|
|
* Only UYVY is supported by hardware.
|
|
*
|
|
* return value: always 0.
|
|
*/
|
|
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_fmtdesc *f)
|
|
{
|
|
|
|
if (f->index != 0)
|
|
return -EINVAL;
|
|
|
|
strcpy(f->description, "4:2:2, packed, UYVY");
|
|
f->pixelformat = V4L2_PIX_FMT_UYVY;
|
|
f->flags = 0;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vidioc_try_fmt_vid_cap - set video capture format
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @f: new format
|
|
*
|
|
* new video format is set which includes width and
|
|
* field type. width is fixed to 720, no scaling.
|
|
* Only UYVY is supported by this hardware.
|
|
* the minimum height is 200, the maximum is 576 (PAL)
|
|
*
|
|
* return value: 0, no error
|
|
*
|
|
* -EINVAL, pixel or field format not supported
|
|
*
|
|
*/
|
|
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
int interlace_lim;
|
|
|
|
if (V4L2_PIX_FMT_UYVY != f->fmt.pix.pixelformat)
|
|
return -EINVAL;
|
|
|
|
if (V4L2_STD_525_60 & vip->std)
|
|
interlace_lim = 240;
|
|
else
|
|
interlace_lim = 288;
|
|
|
|
switch (f->fmt.pix.field) {
|
|
case V4L2_FIELD_ANY:
|
|
if (interlace_lim < f->fmt.pix.height)
|
|
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
|
|
else
|
|
f->fmt.pix.field = V4L2_FIELD_BOTTOM;
|
|
break;
|
|
case V4L2_FIELD_TOP:
|
|
case V4L2_FIELD_BOTTOM:
|
|
if (interlace_lim < f->fmt.pix.height)
|
|
f->fmt.pix.height = interlace_lim;
|
|
break;
|
|
case V4L2_FIELD_INTERLACED:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
f->fmt.pix.height &= ~1;
|
|
if (2 * interlace_lim < f->fmt.pix.height)
|
|
f->fmt.pix.height = 2 * interlace_lim;
|
|
if (200 > f->fmt.pix.height)
|
|
f->fmt.pix.height = 200;
|
|
f->fmt.pix.width = 720;
|
|
f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
|
|
f->fmt.pix.sizeimage = f->fmt.pix.width * 2 * f->fmt.pix.height;
|
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
f->fmt.pix.priv = 0;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vidioc_s_fmt_vid_cap - set current video format parameters
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @f: returned format information
|
|
*
|
|
* set new capture format
|
|
* return value: 0, no error
|
|
*
|
|
* other, delivered by video DAC routine.
|
|
*/
|
|
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
int ret;
|
|
|
|
ret = vidioc_try_fmt_vid_cap(file, priv, f);
|
|
if (ret)
|
|
return ret;
|
|
|
|
memcpy(&vip->format, &f->fmt.pix, sizeof(struct v4l2_pix_format));
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vidioc_g_fmt_vid_cap - get current video format parameters
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @f: contains format information
|
|
*
|
|
* returns current video format parameters
|
|
*
|
|
* return value: 0, always successful
|
|
*/
|
|
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
memcpy(&f->fmt.pix, &vip->format, sizeof(struct v4l2_pix_format));
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vidioc_reqfs - request buffer
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @p: video buffer
|
|
*
|
|
* Handling is done in generic videobuf layer.
|
|
*/
|
|
static int vidioc_reqbufs(struct file *file, void *priv,
|
|
struct v4l2_requestbuffers *p)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return videobuf_reqbufs(&vip->vb_vidq, p);
|
|
}
|
|
|
|
/**
|
|
* vidioc_querybuf - query buffer
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @p: video buffer
|
|
*
|
|
* query buffer state.
|
|
* Handling is done in generic videobuf layer.
|
|
*/
|
|
static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return videobuf_querybuf(&vip->vb_vidq, p);
|
|
}
|
|
|
|
/**
|
|
* vidioc_qbuf - queue a buffer
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @p: video buffer
|
|
*
|
|
* Handling is done in generic videobuf layer.
|
|
*/
|
|
static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return videobuf_qbuf(&vip->vb_vidq, p);
|
|
}
|
|
|
|
/**
|
|
* vidioc_dqbuf - dequeue a buffer
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @p: video buffer
|
|
*
|
|
* Handling is done in generic videobuf layer.
|
|
*/
|
|
static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return videobuf_dqbuf(&vip->vb_vidq, p, file->f_flags & O_NONBLOCK);
|
|
}
|
|
|
|
/**
|
|
* vidioc_streamon - turn on streaming
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @type: type of capture
|
|
*
|
|
* turn on streaming.
|
|
* Handling is done in generic videobuf layer.
|
|
*/
|
|
static int vidioc_streamon(struct file *file, void *priv,
|
|
enum v4l2_buf_type type)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return videobuf_streamon(&vip->vb_vidq);
|
|
}
|
|
|
|
/**
|
|
* vidioc_streamoff - turn off streaming
|
|
* @file: descriptor of device ( not used)
|
|
* @priv: points to current videodevice
|
|
* @type: type of capture
|
|
*
|
|
* turn off streaming.
|
|
* Handling is done in generic videobuf layer.
|
|
*/
|
|
static int vidioc_streamoff(struct file *file, void *priv,
|
|
enum v4l2_buf_type type)
|
|
{
|
|
struct video_device *dev = priv;
|
|
struct sta2x11_vip *vip = video_get_drvdata(dev);
|
|
|
|
return videobuf_streamoff(&vip->vb_vidq);
|
|
}
|
|
|
|
static const struct v4l2_file_operations vip_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = vip_open,
|
|
.release = vip_close,
|
|
.ioctl = video_ioctl2,
|
|
.read = vip_read,
|
|
.mmap = vip_mmap,
|
|
.poll = vip_poll
|
|
};
|
|
|
|
static const struct v4l2_ioctl_ops vip_ioctl_ops = {
|
|
.vidioc_querycap = vidioc_querycap,
|
|
.vidioc_s_std = vidioc_s_std,
|
|
.vidioc_g_std = vidioc_g_std,
|
|
.vidioc_querystd = vidioc_querystd,
|
|
.vidioc_queryctrl = vidioc_queryctrl,
|
|
.vidioc_g_ctrl = vidioc_g_ctrl,
|
|
.vidioc_s_ctrl = vidioc_s_ctrl,
|
|
.vidioc_enum_input = vidioc_enum_input,
|
|
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
|
|
.vidioc_s_input = vidioc_s_input,
|
|
.vidioc_g_input = vidioc_g_input,
|
|
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
|
|
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
|
|
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
|
|
.vidioc_reqbufs = vidioc_reqbufs,
|
|
.vidioc_querybuf = vidioc_querybuf,
|
|
.vidioc_qbuf = vidioc_qbuf,
|
|
.vidioc_dqbuf = vidioc_dqbuf,
|
|
.vidioc_streamon = vidioc_streamon,
|
|
.vidioc_streamoff = vidioc_streamoff,
|
|
};
|
|
|
|
static struct video_device video_dev_template = {
|
|
.name = DRV_NAME,
|
|
.release = video_device_release,
|
|
.fops = &vip_fops,
|
|
.ioctl_ops = &vip_ioctl_ops,
|
|
.tvnorms = V4L2_STD_ALL,
|
|
};
|
|
|
|
/**
|
|
* vip_irq - interrupt routine
|
|
* @irq: Number of interrupt ( not used, correct number is assumed )
|
|
* @vip: local data structure containing all information
|
|
*
|
|
* check for both frame interrupts set ( top and bottom ).
|
|
* check FIFO overflow, but limit number of log messages after open.
|
|
* signal a complete buffer if done.
|
|
* dequeue a new buffer if available.
|
|
* disable VIP if no buffer available.
|
|
*
|
|
* return value: IRQ_NONE, interrupt was not generated by VIP
|
|
*
|
|
* IRQ_HANDLED, interrupt done.
|
|
*/
|
|
static irqreturn_t vip_irq(int irq, struct sta2x11_vip *vip)
|
|
{
|
|
u32 status, dma;
|
|
unsigned long flags;
|
|
struct videobuf_buffer *vb;
|
|
|
|
status = REG_READ(vip, DVP_ITS);
|
|
|
|
if (!status) {
|
|
pr_debug("VIP: irq ignored\n");
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
if (!vip->started)
|
|
return IRQ_HANDLED;
|
|
|
|
if (status & DVP_IT_VSB)
|
|
vip->bcount++;
|
|
|
|
if (status & DVP_IT_VST)
|
|
vip->tcount++;
|
|
|
|
if ((DVP_IT_VSB | DVP_IT_VST) == (status & (DVP_IT_VST | DVP_IT_VSB))) {
|
|
/* this is bad, we are too slow, hope the condition is gone
|
|
* on the next frame */
|
|
pr_info("VIP: both irqs\n");
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
if (status & DVP_IT_FIFO) {
|
|
if (5 > vip->overflow++)
|
|
pr_info("VIP: fifo overflow\n");
|
|
}
|
|
|
|
if (2 > vip->tcount)
|
|
return IRQ_HANDLED;
|
|
|
|
if (status & DVP_IT_VSB)
|
|
return IRQ_HANDLED;
|
|
|
|
spin_lock_irqsave(&vip->slock, flags);
|
|
|
|
REG_WRITE(vip, DVP_CTL, REG_READ(vip, DVP_CTL) & ~DVP_CTL_ENA);
|
|
if (vip->active) {
|
|
do_gettimeofday(&vip->active->ts);
|
|
vip->active->field_count++;
|
|
vip->active->state = VIDEOBUF_DONE;
|
|
wake_up(&vip->active->done);
|
|
vip->active = NULL;
|
|
}
|
|
if (!vip->closing) {
|
|
if (list_empty(&vip->capture))
|
|
goto done;
|
|
|
|
vb = list_first_entry(&vip->capture, struct videobuf_buffer,
|
|
queue);
|
|
if (NULL == vb) {
|
|
pr_info("VIP: no buffer\n");
|
|
goto done;
|
|
}
|
|
vb->state = VIDEOBUF_ACTIVE;
|
|
list_del(&vb->queue);
|
|
vip->active = vb;
|
|
dma = videobuf_to_dma_contig(vb);
|
|
switch (vip->format.field) {
|
|
case V4L2_FIELD_INTERLACED:
|
|
REG_WRITE(vip, DVP_VTP, dma);
|
|
REG_WRITE(vip, DVP_VBP, dma + vip->format.width * 2);
|
|
break;
|
|
case V4L2_FIELD_TOP:
|
|
case V4L2_FIELD_BOTTOM:
|
|
REG_WRITE(vip, DVP_VTP, dma);
|
|
REG_WRITE(vip, DVP_VBP, dma);
|
|
break;
|
|
default:
|
|
pr_warning("VIP: unknown field format\n");
|
|
goto done;
|
|
break;
|
|
}
|
|
REG_WRITE(vip, DVP_CTL, REG_READ(vip, DVP_CTL) | DVP_CTL_ENA);
|
|
}
|
|
done:
|
|
spin_unlock_irqrestore(&vip->slock, flags);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/**
|
|
* vip_gpio_reserve - reserve gpio pin
|
|
* @dev: device
|
|
* @pin: GPIO pin number
|
|
* @dir: direction, input or output
|
|
* @name: GPIO pin name
|
|
*
|
|
*/
|
|
static int vip_gpio_reserve(struct device *dev, int pin, int dir,
|
|
const char *name)
|
|
{
|
|
int ret;
|
|
|
|
if (pin == -1)
|
|
return 0;
|
|
|
|
ret = gpio_request(pin, name);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to allocate pin %d (%s)\n", pin, name);
|
|
return ret;
|
|
}
|
|
|
|
ret = gpio_direction_output(pin, dir);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to set direction for pin %d (%s)\n",
|
|
pin, name);
|
|
gpio_free(pin);
|
|
return ret;
|
|
}
|
|
|
|
ret = gpio_export(pin, false);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to export pin %d (%s)\n", pin, name);
|
|
gpio_free(pin);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vip_gpio_release - release gpio pin
|
|
* @dev: device
|
|
* @pin: GPIO pin number
|
|
* @name: GPIO pin name
|
|
*
|
|
*/
|
|
static void vip_gpio_release(struct device *dev, int pin, const char *name)
|
|
{
|
|
if (pin != -1) {
|
|
dev_dbg(dev, "releasing pin %d (%s)\n", pin, name);
|
|
gpio_unexport(pin);
|
|
gpio_free(pin);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* sta2x11_vip_init_one - init one instance of video device
|
|
* @pdev: PCI device
|
|
* @ent: (not used)
|
|
*
|
|
* allocate reset pins for DAC.
|
|
* Reset video DAC, this is done via reset line.
|
|
* allocate memory for managing device
|
|
* request interrupt
|
|
* map IO region
|
|
* register device
|
|
* find and initialize video DAC
|
|
*
|
|
* return value: 0, no error
|
|
*
|
|
* -ENOMEM, no memory
|
|
*
|
|
* -ENODEV, device could not be detected or registered
|
|
*/
|
|
static int sta2x11_vip_init_one(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
int ret;
|
|
struct sta2x11_vip *vip;
|
|
struct vip_config *config;
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
config = dev_get_platdata(&pdev->dev);
|
|
if (!config) {
|
|
dev_info(&pdev->dev, "VIP slot disabled\n");
|
|
ret = -EINVAL;
|
|
goto disable;
|
|
}
|
|
|
|
ret = vip_gpio_reserve(&pdev->dev, config->pwr_pin, 0,
|
|
config->pwr_name);
|
|
if (ret)
|
|
goto disable;
|
|
|
|
if (config->reset_pin >= 0) {
|
|
ret = vip_gpio_reserve(&pdev->dev, config->reset_pin, 0,
|
|
config->reset_name);
|
|
if (ret) {
|
|
vip_gpio_release(&pdev->dev, config->pwr_pin,
|
|
config->pwr_name);
|
|
goto disable;
|
|
}
|
|
}
|
|
|
|
if (config->pwr_pin != -1) {
|
|
/* Datasheet says 5ms between PWR and RST */
|
|
usleep_range(5000, 25000);
|
|
ret = gpio_direction_output(config->pwr_pin, 1);
|
|
}
|
|
|
|
if (config->reset_pin != -1) {
|
|
/* Datasheet says 5ms between PWR and RST */
|
|
usleep_range(5000, 25000);
|
|
ret = gpio_direction_output(config->reset_pin, 1);
|
|
}
|
|
usleep_range(5000, 25000);
|
|
|
|
vip = kzalloc(sizeof(struct sta2x11_vip), GFP_KERNEL);
|
|
if (!vip) {
|
|
ret = -ENOMEM;
|
|
goto release_gpios;
|
|
}
|
|
|
|
vip->pdev = pdev;
|
|
vip->std = V4L2_STD_PAL;
|
|
vip->format = formats_50[0];
|
|
vip->config = config;
|
|
|
|
if (v4l2_device_register(&pdev->dev, &vip->v4l2_dev))
|
|
goto free_mem;
|
|
|
|
dev_dbg(&pdev->dev, "BAR #0 at 0x%lx 0x%lx irq %d\n",
|
|
(unsigned long)pci_resource_start(pdev, 0),
|
|
(unsigned long)pci_resource_len(pdev, 0), pdev->irq);
|
|
|
|
pci_set_master(pdev);
|
|
|
|
ret = pci_request_regions(pdev, DRV_NAME);
|
|
if (ret)
|
|
goto unreg;
|
|
|
|
vip->iomem = pci_iomap(pdev, 0, 0x100);
|
|
if (!vip->iomem) {
|
|
ret = -ENOMEM; /* FIXME */
|
|
goto release;
|
|
}
|
|
|
|
pci_enable_msi(pdev);
|
|
|
|
INIT_LIST_HEAD(&vip->capture);
|
|
spin_lock_init(&vip->slock);
|
|
mutex_init(&vip->mutex);
|
|
vip->started = 0;
|
|
vip->disabled = 0;
|
|
|
|
ret = request_irq(pdev->irq,
|
|
(irq_handler_t) vip_irq,
|
|
IRQF_SHARED, DRV_NAME, vip);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "request_irq failed\n");
|
|
ret = -ENODEV;
|
|
goto unmap;
|
|
}
|
|
|
|
vip->video_dev = video_device_alloc();
|
|
if (!vip->video_dev) {
|
|
ret = -ENOMEM;
|
|
goto release_irq;
|
|
}
|
|
|
|
*(vip->video_dev) = video_dev_template;
|
|
video_set_drvdata(vip->video_dev, vip);
|
|
|
|
ret = video_register_device(vip->video_dev, VFL_TYPE_GRABBER, -1);
|
|
if (ret)
|
|
goto vrelease;
|
|
|
|
vip->adapter = i2c_get_adapter(vip->config->i2c_id);
|
|
if (!vip->adapter) {
|
|
ret = -ENODEV;
|
|
dev_err(&pdev->dev, "no I2C adapter found\n");
|
|
goto vunreg;
|
|
}
|
|
|
|
vip->decoder = v4l2_i2c_new_subdev(&vip->v4l2_dev, vip->adapter,
|
|
"adv7180", vip->config->i2c_addr,
|
|
NULL);
|
|
if (!vip->decoder) {
|
|
ret = -ENODEV;
|
|
dev_err(&pdev->dev, "no decoder found\n");
|
|
goto vunreg;
|
|
}
|
|
|
|
i2c_put_adapter(vip->adapter);
|
|
|
|
v4l2_subdev_call(vip->decoder, core, init, 0);
|
|
|
|
pr_info("STA2X11 Video Input Port (VIP) loaded\n");
|
|
return 0;
|
|
|
|
vunreg:
|
|
video_set_drvdata(vip->video_dev, NULL);
|
|
vrelease:
|
|
if (video_is_registered(vip->video_dev))
|
|
video_unregister_device(vip->video_dev);
|
|
else
|
|
video_device_release(vip->video_dev);
|
|
release_irq:
|
|
free_irq(pdev->irq, vip);
|
|
pci_disable_msi(pdev);
|
|
unmap:
|
|
pci_iounmap(pdev, vip->iomem);
|
|
mutex_destroy(&vip->mutex);
|
|
release:
|
|
pci_release_regions(pdev);
|
|
unreg:
|
|
v4l2_device_unregister(&vip->v4l2_dev);
|
|
free_mem:
|
|
kfree(vip);
|
|
release_gpios:
|
|
vip_gpio_release(&pdev->dev, config->reset_pin, config->reset_name);
|
|
vip_gpio_release(&pdev->dev, config->pwr_pin, config->pwr_name);
|
|
disable:
|
|
/*
|
|
* do not call pci_disable_device on sta2x11 because it break all
|
|
* other Bus masters on this EP
|
|
*/
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* sta2x11_vip_remove_one - release device
|
|
* @pdev: PCI device
|
|
*
|
|
* Undo everything done in .._init_one
|
|
*
|
|
* unregister video device
|
|
* free interrupt
|
|
* unmap ioadresses
|
|
* free memory
|
|
* free GPIO pins
|
|
*/
|
|
static void sta2x11_vip_remove_one(struct pci_dev *pdev)
|
|
{
|
|
struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
|
|
struct sta2x11_vip *vip =
|
|
container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
|
|
|
|
video_set_drvdata(vip->video_dev, NULL);
|
|
video_unregister_device(vip->video_dev);
|
|
/*do not call video_device_release() here, is already done */
|
|
free_irq(pdev->irq, vip);
|
|
pci_disable_msi(pdev);
|
|
pci_iounmap(pdev, vip->iomem);
|
|
pci_release_regions(pdev);
|
|
|
|
v4l2_device_unregister(&vip->v4l2_dev);
|
|
mutex_destroy(&vip->mutex);
|
|
|
|
vip_gpio_release(&pdev->dev, vip->config->pwr_pin,
|
|
vip->config->pwr_name);
|
|
vip_gpio_release(&pdev->dev, vip->config->reset_pin,
|
|
vip->config->reset_name);
|
|
|
|
kfree(vip);
|
|
/*
|
|
* do not call pci_disable_device on sta2x11 because it break all
|
|
* other Bus masters on this EP
|
|
*/
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
/**
|
|
* sta2x11_vip_suspend - set device into power save mode
|
|
* @pdev: PCI device
|
|
* @state: new state of device
|
|
*
|
|
* all relevant registers are saved and an attempt to set a new state is made.
|
|
*
|
|
* return value: 0 always indicate success,
|
|
* even if device could not be disabled. (workaround for hardware problem)
|
|
*
|
|
* reurn value : 0, always succesful, even if hardware does not not support
|
|
* power down mode.
|
|
*/
|
|
static int sta2x11_vip_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
|
|
struct sta2x11_vip *vip =
|
|
container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
spin_lock_irqsave(&vip->slock, flags);
|
|
vip->register_save_area[0] = REG_READ(vip, DVP_CTL);
|
|
REG_WRITE(vip, DVP_CTL, vip->register_save_area[0] & DVP_CTL_DIS);
|
|
vip->register_save_area[SAVE_COUNT] = REG_READ(vip, DVP_ITM);
|
|
REG_WRITE(vip, DVP_ITM, 0);
|
|
for (i = 1; i < SAVE_COUNT; i++)
|
|
vip->register_save_area[i] = REG_READ(vip, 4 * i);
|
|
for (i = 0; i < AUX_COUNT; i++)
|
|
vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i] =
|
|
REG_READ(vip, registers_to_save[i]);
|
|
spin_unlock_irqrestore(&vip->slock, flags);
|
|
/* save pci state */
|
|
pci_save_state(pdev);
|
|
if (pci_set_power_state(pdev, pci_choose_state(pdev, state))) {
|
|
/*
|
|
* do not call pci_disable_device on sta2x11 because it
|
|
* break all other Bus masters on this EP
|
|
*/
|
|
vip->disabled = 1;
|
|
}
|
|
|
|
pr_info("VIP: suspend\n");
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* sta2x11_vip_resume - resume device operation
|
|
* @pdev : PCI device
|
|
*
|
|
* re-enable device, set PCI state to powered and restore registers.
|
|
* resume normal device operation afterwards.
|
|
*
|
|
* return value: 0, no error.
|
|
*
|
|
* other, could not set device to power on state.
|
|
*/
|
|
static int sta2x11_vip_resume(struct pci_dev *pdev)
|
|
{
|
|
struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
|
|
struct sta2x11_vip *vip =
|
|
container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
|
|
unsigned long flags;
|
|
int ret, i;
|
|
|
|
pr_info("VIP: resume\n");
|
|
/* restore pci state */
|
|
if (vip->disabled) {
|
|
ret = pci_enable_device(pdev);
|
|
if (ret) {
|
|
pr_warning("VIP: Can't enable device.\n");
|
|
return ret;
|
|
}
|
|
vip->disabled = 0;
|
|
}
|
|
ret = pci_set_power_state(pdev, PCI_D0);
|
|
if (ret) {
|
|
/*
|
|
* do not call pci_disable_device on sta2x11 because it
|
|
* break all other Bus masters on this EP
|
|
*/
|
|
pr_warning("VIP: Can't enable device.\n");
|
|
vip->disabled = 1;
|
|
return ret;
|
|
}
|
|
|
|
pci_restore_state(pdev);
|
|
|
|
spin_lock_irqsave(&vip->slock, flags);
|
|
for (i = 1; i < SAVE_COUNT; i++)
|
|
REG_WRITE(vip, 4 * i, vip->register_save_area[i]);
|
|
for (i = 0; i < AUX_COUNT; i++)
|
|
REG_WRITE(vip, registers_to_save[i],
|
|
vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i]);
|
|
REG_WRITE(vip, DVP_CTL, vip->register_save_area[0]);
|
|
REG_WRITE(vip, DVP_ITM, vip->register_save_area[SAVE_COUNT]);
|
|
spin_unlock_irqrestore(&vip->slock, flags);
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
static DEFINE_PCI_DEVICE_TABLE(sta2x11_vip_pci_tbl) = {
|
|
{PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_VIP)},
|
|
{0,}
|
|
};
|
|
|
|
static struct pci_driver sta2x11_vip_driver = {
|
|
.name = DRV_NAME,
|
|
.probe = sta2x11_vip_init_one,
|
|
.remove = sta2x11_vip_remove_one,
|
|
.id_table = sta2x11_vip_pci_tbl,
|
|
#ifdef CONFIG_PM
|
|
.suspend = sta2x11_vip_suspend,
|
|
.resume = sta2x11_vip_resume,
|
|
#endif
|
|
};
|
|
|
|
static int __init sta2x11_vip_init_module(void)
|
|
{
|
|
return pci_register_driver(&sta2x11_vip_driver);
|
|
}
|
|
|
|
static void __exit sta2x11_vip_exit_module(void)
|
|
{
|
|
pci_unregister_driver(&sta2x11_vip_driver);
|
|
}
|
|
|
|
#ifdef MODULE
|
|
module_init(sta2x11_vip_init_module);
|
|
module_exit(sta2x11_vip_exit_module);
|
|
#else
|
|
late_initcall_sync(sta2x11_vip_init_module);
|
|
#endif
|
|
|
|
MODULE_DESCRIPTION("STA2X11 Video Input Port driver");
|
|
MODULE_AUTHOR("Wind River");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_SUPPORTED_DEVICE("sta2x11 video input");
|
|
MODULE_VERSION(DRV_VERSION);
|
|
MODULE_DEVICE_TABLE(pci, sta2x11_vip_pci_tbl);
|