+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * This is the driver for the STA2x11 Video Input Port.
- *
- * Copyright (C) 2012 ST Microelectronics
- * author: Federico Vaga <federico.vaga@gmail.com>
- * Copyright (C) 2010 WindRiver Systems, Inc.
- * authors: Andreas Kies <andreas.kies@windriver.com>
- * Vlad Lungu <vlad.lungu@windriver.com>
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/videodev2.h>
-#include <linux/kmod.h>
-#include <linux/pci.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/gpio/consumer.h>
-#include <linux/gpio.h>
-#include <linux/i2c.h>
-#include <linux/delay.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-event.h>
-#include <media/videobuf2-dma-contig.h>
-
-#include "sta2x11_vip.h"
-
-#define DRV_VERSION "1.3"
-
-#ifndef PCI_DEVICE_ID_STMICRO_VIP
-#define PCI_DEVICE_ID_STMICRO_VIP 0xCC0D
-#endif
-
-#define MAX_FRAMES 4
-
-/*Register offsets*/
-#define DVP_CTL 0x00
-#define DVP_TFO 0x04
-#define DVP_TFS 0x08
-#define DVP_BFO 0x0C
-#define DVP_BFS 0x10
-#define DVP_VTP 0x14
-#define DVP_VBP 0x18
-#define DVP_VMP 0x1C
-#define DVP_ITM 0x98
-#define DVP_ITS 0x9C
-#define DVP_STA 0xA0
-#define DVP_HLFLN 0xA8
-#define DVP_RGB 0xC0
-#define DVP_PKZ 0xF0
-
-/*Register fields*/
-#define DVP_CTL_ENA 0x00000001
-#define DVP_CTL_RST 0x80000000
-#define DVP_CTL_DIS (~0x00040001)
-
-#define DVP_IT_VSB 0x00000008
-#define DVP_IT_VST 0x00000010
-#define DVP_IT_FIFO 0x00000020
-
-#define DVP_HLFLN_SD 0x00000001
-
-#define SAVE_COUNT 8
-#define AUX_COUNT 3
-#define IRQ_COUNT 1
-
-
-struct vip_buffer {
- struct vb2_v4l2_buffer vb;
- struct list_head list;
- dma_addr_t dma;
-};
-static inline struct vip_buffer *to_vip_buffer(struct vb2_v4l2_buffer *vb2)
-{
- return container_of(vb2, struct vip_buffer, vb);
-}
-
-/**
- * struct sta2x11_vip - All internal data for one instance of device
- * @v4l2_dev: device registered in v4l layer
- * @video_dev: properties of our device
- * @pdev: PCI device
- * @adapter: contains I2C adapter information
- * @register_save_area: All relevant register are saved here during suspend
- * @decoder: contains information about video DAC
- * @ctrl_hdl: handler for control framework
- * @format: pixel format, fixed UYVY
- * @std: video standard (e.g. PAL/NTSC)
- * @input: input line for video signal ( 0 or 1 )
- * @disabled: Device is in power down state
- * @slock: for excluse access of registers
- * @vb_vidq: queue maintained by videobuf2 layer
- * @buffer_list: list of buffer in use
- * @sequence: sequence number of acquired buffer
- * @active: current active buffer
- * @lock: used in videobuf2 callback
- * @v4l_lock: serialize its video4linux ioctls
- * @tcount: Number of top frames
- * @bcount: Number of bottom frames
- * @overflow: Number of FIFO overflows
- * @iomem: hardware base address
- * @config: I2C and gpio config from platform
- *
- * All non-local data is accessed via this structure.
- */
-struct sta2x11_vip {
- struct v4l2_device v4l2_dev;
- struct video_device video_dev;
- struct pci_dev *pdev;
- struct i2c_adapter *adapter;
- unsigned int register_save_area[IRQ_COUNT + SAVE_COUNT + AUX_COUNT];
- struct v4l2_subdev *decoder;
- struct v4l2_ctrl_handler ctrl_hdl;
-
-
- struct v4l2_pix_format format;
- v4l2_std_id std;
- unsigned int input;
- int disabled;
- spinlock_t slock;
-
- struct vb2_queue vb_vidq;
- struct list_head buffer_list;
- unsigned int sequence;
- struct vip_buffer *active; /* current active buffer */
- spinlock_t lock; /* Used in videobuf2 callback */
- struct mutex v4l_lock;
-
- /* Interrupt counters */
- int tcount, bcount;
- int overflow;
-
- void __iomem *iomem; /* I/O Memory */
- struct vip_config *config;
-};
-
-static const unsigned int registers_to_save[AUX_COUNT] = {
- DVP_HLFLN, DVP_RGB, DVP_PKZ
-};
-
-static struct v4l2_pix_format formats_50[] = {
- { /*PAL interlaced */
- .width = 720,
- .height = 576,
- .pixelformat = V4L2_PIX_FMT_UYVY,
- .field = V4L2_FIELD_INTERLACED,
- .bytesperline = 720 * 2,
- .sizeimage = 720 * 2 * 576,
- .colorspace = V4L2_COLORSPACE_SMPTE170M},
- { /*PAL top */
- .width = 720,
- .height = 288,
- .pixelformat = V4L2_PIX_FMT_UYVY,
- .field = V4L2_FIELD_TOP,
- .bytesperline = 720 * 2,
- .sizeimage = 720 * 2 * 288,
- .colorspace = V4L2_COLORSPACE_SMPTE170M},
- { /*PAL bottom */
- .width = 720,
- .height = 288,
- .pixelformat = V4L2_PIX_FMT_UYVY,
- .field = V4L2_FIELD_BOTTOM,
- .bytesperline = 720 * 2,
- .sizeimage = 720 * 2 * 288,
- .colorspace = V4L2_COLORSPACE_SMPTE170M},
-
-};
-
-static struct v4l2_pix_format formats_60[] = {
- { /*NTSC interlaced */
- .width = 720,
- .height = 480,
- .pixelformat = V4L2_PIX_FMT_UYVY,
- .field = V4L2_FIELD_INTERLACED,
- .bytesperline = 720 * 2,
- .sizeimage = 720 * 2 * 480,
- .colorspace = V4L2_COLORSPACE_SMPTE170M},
- { /*NTSC top */
- .width = 720,
- .height = 240,
- .pixelformat = V4L2_PIX_FMT_UYVY,
- .field = V4L2_FIELD_TOP,
- .bytesperline = 720 * 2,
- .sizeimage = 720 * 2 * 240,
- .colorspace = V4L2_COLORSPACE_SMPTE170M},
- { /*NTSC bottom */
- .width = 720,
- .height = 240,
- .pixelformat = V4L2_PIX_FMT_UYVY,
- .field = V4L2_FIELD_BOTTOM,
- .bytesperline = 720 * 2,
- .sizeimage = 720 * 2 * 240,
- .colorspace = V4L2_COLORSPACE_SMPTE170M},
-};
-
-/* Write VIP register */
-static inline void reg_write(struct sta2x11_vip *vip, unsigned int reg, u32 val)
-{
- iowrite32((val), (vip->iomem)+(reg));
-}
-/* Read VIP register */
-static inline u32 reg_read(struct sta2x11_vip *vip, unsigned int reg)
-{
- return ioread32((vip->iomem)+(reg));
-}
-/* Start DMA acquisition */
-static void start_dma(struct sta2x11_vip *vip, struct vip_buffer *vip_buf)
-{
- unsigned long offset = 0;
-
- if (vip->format.field == V4L2_FIELD_INTERLACED)
- offset = vip->format.width * 2;
-
- spin_lock_irq(&vip->slock);
- /* Enable acquisition */
- reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) | DVP_CTL_ENA);
- /* Set Top and Bottom Field memory address */
- reg_write(vip, DVP_VTP, (u32)vip_buf->dma);
- reg_write(vip, DVP_VBP, (u32)vip_buf->dma + offset);
- spin_unlock_irq(&vip->slock);
-}
-
-/* Fetch the next buffer to activate */
-static void vip_active_buf_next(struct sta2x11_vip *vip)
-{
- /* Get the next buffer */
- spin_lock(&vip->lock);
- if (list_empty(&vip->buffer_list)) {/* No available buffer */
- spin_unlock(&vip->lock);
- return;
- }
- vip->active = list_first_entry(&vip->buffer_list,
- struct vip_buffer,
- list);
- /* Reset Top and Bottom counter */
- vip->tcount = 0;
- vip->bcount = 0;
- spin_unlock(&vip->lock);
- if (vb2_is_streaming(&vip->vb_vidq)) { /* streaming is on */
- start_dma(vip, vip->active); /* start dma capture */
- }
-}
-
-
-/* Videobuf2 Operations */
-static int queue_setup(struct vb2_queue *vq,
- unsigned int *nbuffers, unsigned int *nplanes,
- unsigned int sizes[], struct device *alloc_devs[])
-{
- struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
-
- if (!(*nbuffers) || *nbuffers < MAX_FRAMES)
- *nbuffers = MAX_FRAMES;
-
- *nplanes = 1;
- sizes[0] = vip->format.sizeimage;
-
- vip->sequence = 0;
- vip->active = NULL;
- vip->tcount = 0;
- vip->bcount = 0;
-
- return 0;
-};
-static int buffer_init(struct vb2_buffer *vb)
-{
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
-
- vip_buf->dma = vb2_dma_contig_plane_dma_addr(vb, 0);
- INIT_LIST_HEAD(&vip_buf->list);
- return 0;
-}
-
-static int buffer_prepare(struct vb2_buffer *vb)
-{
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
- struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
- unsigned long size;
-
- size = vip->format.sizeimage;
- if (vb2_plane_size(vb, 0) < size) {
- v4l2_err(&vip->v4l2_dev, "buffer too small (%lu < %lu)\n",
- vb2_plane_size(vb, 0), size);
- return -EINVAL;
- }
-
- vb2_set_plane_payload(&vip_buf->vb.vb2_buf, 0, size);
-
- return 0;
-}
-static void buffer_queue(struct vb2_buffer *vb)
-{
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
- struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
-
- spin_lock(&vip->lock);
- list_add_tail(&vip_buf->list, &vip->buffer_list);
- if (!vip->active) { /* No active buffer, active the first one */
- vip->active = list_first_entry(&vip->buffer_list,
- struct vip_buffer,
- list);
- if (vb2_is_streaming(&vip->vb_vidq)) /* streaming is on */
- start_dma(vip, vip_buf); /* start dma capture */
- }
- spin_unlock(&vip->lock);
-}
-static void buffer_finish(struct vb2_buffer *vb)
-{
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
- struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
-
- /* Buffer handled, remove it from the list */
- spin_lock(&vip->lock);
- list_del_init(&vip_buf->list);
- spin_unlock(&vip->lock);
-
- if (vb2_is_streaming(vb->vb2_queue))
- vip_active_buf_next(vip);
-}
-
-static int start_streaming(struct vb2_queue *vq, unsigned int count)
-{
- struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
-
- spin_lock_irq(&vip->slock);
- /* Enable interrupt VSYNC Top and Bottom*/
- reg_write(vip, DVP_ITM, DVP_IT_VSB | DVP_IT_VST);
- spin_unlock_irq(&vip->slock);
-
- if (count)
- start_dma(vip, vip->active);
-
- return 0;
-}
-
-/* abort streaming and wait for last buffer */
-static void stop_streaming(struct vb2_queue *vq)
-{
- struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
- struct vip_buffer *vip_buf, *node;
-
- /* Disable acquisition */
- reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA);
- /* Disable all interrupts */
- reg_write(vip, DVP_ITM, 0);
-
- /* Release all active buffers */
- spin_lock(&vip->lock);
- list_for_each_entry_safe(vip_buf, node, &vip->buffer_list, list) {
- vb2_buffer_done(&vip_buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
- list_del(&vip_buf->list);
- }
- spin_unlock(&vip->lock);
-}
-
-static const struct vb2_ops vip_video_qops = {
- .queue_setup = queue_setup,
- .buf_init = buffer_init,
- .buf_prepare = buffer_prepare,
- .buf_finish = buffer_finish,
- .buf_queue = buffer_queue,
- .start_streaming = start_streaming,
- .stop_streaming = stop_streaming,
-};
-
-
-/* File Operations */
-static const struct v4l2_file_operations vip_fops = {
- .owner = THIS_MODULE,
- .open = v4l2_fh_open,
- .release = vb2_fop_release,
- .unlocked_ioctl = video_ioctl2,
- .read = vb2_fop_read,
- .mmap = vb2_fop_mmap,
- .poll = vb2_fop_poll
-};
-
-
-/**
- * vidioc_querycap - return capabilities of device
- * @file: descriptor of device
- * @cap: contains return values
- * @priv: unused
- *
- * 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)
-{
- strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
- strscpy(cap->card, KBUILD_MODNAME, sizeof(cap->card));
- return 0;
-}
-
-/**
- * vidioc_s_std - set video standard
- * @file: descriptor of device
- * @std: contains standard to be set
- * @priv: unused
- *
- * 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 sta2x11_vip *vip = video_drvdata(file);
-
- /*
- * This is here for backwards compatibility only.
- * The use of V4L2_STD_ALL to trigger a querystd is non-standard.
- */
- if (std == V4L2_STD_ALL) {
- v4l2_subdev_call(vip->decoder, video, querystd, &std);
- if (std == V4L2_STD_UNKNOWN)
- return -EIO;
- }
-
- if (vip->std != std) {
- vip->std = std;
- if (V4L2_STD_525_60 & std)
- vip->format = formats_60[0];
- else
- vip->format = formats_50[0];
- }
-
- return v4l2_subdev_call(vip->decoder, video, s_std, std);
-}
-
-/**
- * vidioc_g_std - get video standard
- * @file: descriptor of device
- * @priv: unused
- * @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 sta2x11_vip *vip = video_drvdata(file);
-
- *std = vip->std;
- return 0;
-}
-
-/**
- * vidioc_querystd - get possible video standards
- * @file: descriptor of device
- * @priv: unused
- * @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 sta2x11_vip *vip = video_drvdata(file);
-
- return v4l2_subdev_call(vip->decoder, video, querystd, std);
-}
-
-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
- * @priv: unused
- * @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 sta2x11_vip *vip = video_drvdata(file);
- 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
- * @priv: unused
- * @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 sta2x11_vip *vip = video_drvdata(file);
-
- *i = vip->input;
- return 0;
-}
-
-/**
- * vidioc_enum_fmt_vid_cap - return video capture format
- * @file: descriptor of device
- * @priv: unused
- * @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;
-
- f->pixelformat = V4L2_PIX_FMT_UYVY;
- return 0;
-}
-
-/**
- * vidioc_try_fmt_vid_cap - set video capture format
- * @file: descriptor of device
- * @priv: unused
- * @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 sta2x11_vip *vip = video_drvdata(file);
- int interlace_lim;
-
- if (V4L2_PIX_FMT_UYVY != f->fmt.pix.pixelformat) {
- v4l2_warn(&vip->v4l2_dev, "Invalid format, only UYVY supported\n");
- return -EINVAL;
- }
-
- if (V4L2_STD_525_60 & vip->std)
- interlace_lim = 240;
- else
- interlace_lim = 288;
-
- switch (f->fmt.pix.field) {
- default:
- 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;
- }
-
- /* It is the only supported format */
- f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
- 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;
- return 0;
-}
-
-/**
- * vidioc_s_fmt_vid_cap - set current video format parameters
- * @file: descriptor of device
- * @priv: unused
- * @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 sta2x11_vip *vip = video_drvdata(file);
- unsigned int t_stop, b_stop, pitch;
- int ret;
-
- ret = vidioc_try_fmt_vid_cap(file, priv, f);
- if (ret)
- return ret;
-
- if (vb2_is_busy(&vip->vb_vidq)) {
- /* Can't change format during acquisition */
- v4l2_err(&vip->v4l2_dev, "device busy\n");
- return -EBUSY;
- }
- vip->format = f->fmt.pix;
- switch (vip->format.field) {
- case V4L2_FIELD_INTERLACED:
- t_stop = ((vip->format.height / 2 - 1) << 16) |
- (2 * vip->format.width - 1);
- b_stop = t_stop;
- pitch = 4 * vip->format.width;
- break;
- case V4L2_FIELD_TOP:
- t_stop = ((vip->format.height - 1) << 16) |
- (2 * vip->format.width - 1);
- b_stop = (0 << 16) | (2 * vip->format.width - 1);
- pitch = 2 * vip->format.width;
- break;
- case V4L2_FIELD_BOTTOM:
- t_stop = (0 << 16) | (2 * vip->format.width - 1);
- b_stop = (vip->format.height << 16) |
- (2 * vip->format.width - 1);
- pitch = 2 * vip->format.width;
- break;
- default:
- v4l2_err(&vip->v4l2_dev, "unknown field format\n");
- return -EINVAL;
- }
-
- spin_lock_irq(&vip->slock);
- /* Y-X Top Field Offset */
- reg_write(vip, DVP_TFO, 0);
- /* Y-X Bottom Field Offset */
- reg_write(vip, DVP_BFO, 0);
- /* Y-X Top Field Stop*/
- reg_write(vip, DVP_TFS, t_stop);
- /* Y-X Bottom Field Stop */
- reg_write(vip, DVP_BFS, b_stop);
- /* Video Memory Pitch */
- reg_write(vip, DVP_VMP, pitch);
- spin_unlock_irq(&vip->slock);
-
- return 0;
-}
-
-/**
- * vidioc_g_fmt_vid_cap - get current video format parameters
- * @file: descriptor of device
- * @priv: unused
- * @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 sta2x11_vip *vip = video_drvdata(file);
-
- f->fmt.pix = vip->format;
-
- return 0;
-}
-
-static const struct v4l2_ioctl_ops vip_ioctl_ops = {
- .vidioc_querycap = vidioc_querycap,
- /* FMT handling */
- .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
- .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
- .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
- .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
- /* Buffer handlers */
- .vidioc_create_bufs = vb2_ioctl_create_bufs,
- .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
- .vidioc_reqbufs = vb2_ioctl_reqbufs,
- .vidioc_querybuf = vb2_ioctl_querybuf,
- .vidioc_qbuf = vb2_ioctl_qbuf,
- .vidioc_dqbuf = vb2_ioctl_dqbuf,
- /* Stream on/off */
- .vidioc_streamon = vb2_ioctl_streamon,
- .vidioc_streamoff = vb2_ioctl_streamoff,
- /* Standard handling */
- .vidioc_g_std = vidioc_g_std,
- .vidioc_s_std = vidioc_s_std,
- .vidioc_querystd = vidioc_querystd,
- /* Input handling */
- .vidioc_enum_input = vidioc_enum_input,
- .vidioc_g_input = vidioc_g_input,
- .vidioc_s_input = vidioc_s_input,
- /* Log status ioctl */
- .vidioc_log_status = v4l2_ctrl_log_status,
- /* Event handling */
- .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
- .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
-};
-
-static const struct video_device video_dev_template = {
- .name = KBUILD_MODNAME,
- .release = video_device_release_empty,
- .fops = &vip_fops,
- .ioctl_ops = &vip_ioctl_ops,
- .tvnorms = V4L2_STD_ALL,
- .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
- V4L2_CAP_STREAMING,
-};
-
-/**
- * vip_irq - interrupt routine
- * @irq: Number of interrupt ( not used, correct number is assumed )
- * @data: 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
- *
- * return value: IRQ_NONE, interrupt was not generated by VIP
- *
- * IRQ_HANDLED, interrupt done.
- */
-static irqreturn_t vip_irq(int irq, void *data)
-{
- struct sta2x11_vip *vip = data;
- unsigned int status;
-
- status = reg_read(vip, DVP_ITS);
-
- if (!status) /* No interrupt to handle */
- return IRQ_NONE;
-
- if (status & DVP_IT_FIFO)
- if (vip->overflow++ > 5)
- pr_info("VIP: fifo overflow\n");
-
- if ((status & DVP_IT_VST) && (status & DVP_IT_VSB)) {
- /* this is bad, we are too slow, hope the condition is gone
- * on the next frame */
- return IRQ_HANDLED;
- }
-
- if (status & DVP_IT_VST)
- if ((++vip->tcount) < 2)
- return IRQ_HANDLED;
- if (status & DVP_IT_VSB) {
- vip->bcount++;
- return IRQ_HANDLED;
- }
-
- if (vip->active) { /* Acquisition is over on this buffer */
- /* Disable acquisition */
- reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA);
- /* Remove the active buffer from the list */
- vip->active->vb.vb2_buf.timestamp = ktime_get_ns();
- vip->active->vb.sequence = vip->sequence++;
- vb2_buffer_done(&vip->active->vb.vb2_buf, VB2_BUF_STATE_DONE);
- }
-
- return IRQ_HANDLED;
-}
-
-static void sta2x11_vip_init_register(struct sta2x11_vip *vip)
-{
- /* Register initialization */
- spin_lock_irq(&vip->slock);
- /* Clean interrupt */
- reg_read(vip, DVP_ITS);
- /* Enable Half Line per vertical */
- reg_write(vip, DVP_HLFLN, DVP_HLFLN_SD);
- /* Reset VIP control */
- reg_write(vip, DVP_CTL, DVP_CTL_RST);
- /* Clear VIP control */
- reg_write(vip, DVP_CTL, 0);
- spin_unlock_irq(&vip->slock);
-}
-static void sta2x11_vip_clear_register(struct sta2x11_vip *vip)
-{
- spin_lock_irq(&vip->slock);
- /* Disable interrupt */
- reg_write(vip, DVP_ITM, 0);
- /* Reset VIP Control */
- reg_write(vip, DVP_CTL, DVP_CTL_RST);
- /* Clear VIP Control */
- reg_write(vip, DVP_CTL, 0);
- /* Clean VIP Interrupt */
- reg_read(vip, DVP_ITS);
- spin_unlock_irq(&vip->slock);
-}
-static int sta2x11_vip_init_buffer(struct sta2x11_vip *vip)
-{
- int err;
-
- err = dma_set_coherent_mask(&vip->pdev->dev, DMA_BIT_MASK(29));
- if (err) {
- v4l2_err(&vip->v4l2_dev, "Cannot configure coherent mask");
- return err;
- }
- memset(&vip->vb_vidq, 0, sizeof(struct vb2_queue));
- vip->vb_vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- vip->vb_vidq.io_modes = VB2_MMAP | VB2_READ;
- vip->vb_vidq.drv_priv = vip;
- vip->vb_vidq.buf_struct_size = sizeof(struct vip_buffer);
- vip->vb_vidq.ops = &vip_video_qops;
- vip->vb_vidq.mem_ops = &vb2_dma_contig_memops;
- vip->vb_vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- vip->vb_vidq.dev = &vip->pdev->dev;
- vip->vb_vidq.lock = &vip->v4l_lock;
- err = vb2_queue_init(&vip->vb_vidq);
- if (err)
- return err;
- INIT_LIST_HEAD(&vip->buffer_list);
- spin_lock_init(&vip->lock);
- return 0;
-}
-
-static int sta2x11_vip_init_controls(struct sta2x11_vip *vip)
-{
- /*
- * Inititialize an empty control so VIP can inerithing controls
- * from ADV7180
- */
- v4l2_ctrl_handler_init(&vip->ctrl_hdl, 0);
-
- vip->v4l2_dev.ctrl_handler = &vip->ctrl_hdl;
- if (vip->ctrl_hdl.error) {
- int err = vip->ctrl_hdl.error;
-
- v4l2_ctrl_handler_free(&vip->ctrl_hdl);
- return err;
- }
-
- return 0;
-}
-
-/**
- * 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)
-{
- struct gpio_desc *desc = gpio_to_desc(pin);
- int ret = -ENODEV;
-
- if (!gpio_is_valid(pin))
- return ret;
-
- ret = gpio_request(pin, name);
- if (ret) {
- dev_err(dev, "Failed to allocate pin %d (%s)\n", pin, name);
- return ret;
- }
-
- ret = gpiod_direction_output(desc, dir);
- if (ret) {
- dev_err(dev, "Failed to set direction for pin %d (%s)\n",
- pin, name);
- gpio_free(pin);
- return ret;
- }
-
- ret = gpiod_export(desc, 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 (gpio_is_valid(pin)) {
- struct gpio_desc *desc = gpio_to_desc(pin);
-
- dev_dbg(dev, "releasing pin %d (%s)\n", pin, name);
- gpiod_unexport(desc);
- 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;
-
- /* Check if hardware support 26-bit DMA */
- if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(26))) {
- dev_err(&pdev->dev, "26-bit DMA addressing not available\n");
- return -EINVAL;
- }
- /* Enable PCI */
- ret = pci_enable_device(pdev);
- if (ret)
- return ret;
-
- /* Get VIP platform data */
- config = dev_get_platdata(&pdev->dev);
- if (!config) {
- dev_info(&pdev->dev, "VIP slot disabled\n");
- ret = -EINVAL;
- goto disable;
- }
-
- /* Power configuration */
- ret = vip_gpio_reserve(&pdev->dev, config->pwr_pin, 0,
- config->pwr_name);
- if (ret)
- goto disable;
-
- 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 (gpio_is_valid(config->pwr_pin)) {
- /* Datasheet says 5ms between PWR and RST */
- usleep_range(5000, 25000);
- gpio_direction_output(config->pwr_pin, 1);
- }
-
- if (gpio_is_valid(config->reset_pin)) {
- /* Datasheet says 5ms between PWR and RST */
- usleep_range(5000, 25000);
- gpio_direction_output(config->reset_pin, 1);
- }
- usleep_range(5000, 25000);
-
- /* Allocate a new VIP instance */
- 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;
- mutex_init(&vip->v4l_lock);
-
- ret = sta2x11_vip_init_controls(vip);
- if (ret)
- goto free_mem;
- ret = v4l2_device_register(&pdev->dev, &vip->v4l2_dev);
- if (ret)
- 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, KBUILD_MODNAME);
- if (ret)
- goto unreg;
-
- vip->iomem = pci_iomap(pdev, 0, 0x100);
- if (!vip->iomem) {
- ret = -ENOMEM;
- goto release;
- }
-
- pci_enable_msi(pdev);
-
- /* Initialize buffer */
- ret = sta2x11_vip_init_buffer(vip);
- if (ret)
- goto unmap;
-
- spin_lock_init(&vip->slock);
-
- ret = request_irq(pdev->irq, vip_irq, IRQF_SHARED, KBUILD_MODNAME, vip);
- if (ret) {
- dev_err(&pdev->dev, "request_irq failed\n");
- ret = -ENODEV;
- goto release_buf;
- }
-
- /* Initialize and register video device */
- vip->video_dev = video_dev_template;
- vip->video_dev.v4l2_dev = &vip->v4l2_dev;
- vip->video_dev.queue = &vip->vb_vidq;
- vip->video_dev.lock = &vip->v4l_lock;
- video_set_drvdata(&vip->video_dev, vip);
-
- ret = video_register_device(&vip->video_dev, VFL_TYPE_VIDEO, -1);
- if (ret)
- goto vrelease;
-
- /* Get ADV7180 subdevice */
- 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);
-
- sta2x11_vip_init_register(vip);
-
- dev_info(&pdev->dev, "STA2X11 Video Input Port (VIP) loaded\n");
- return 0;
-
-vunreg:
- video_set_drvdata(&vip->video_dev, NULL);
-vrelease:
- vb2_video_unregister_device(&vip->video_dev);
- free_irq(pdev->irq, vip);
-release_buf:
- pci_disable_msi(pdev);
-unmap:
- pci_iounmap(pdev, vip->iomem);
-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);
-
- sta2x11_vip_clear_register(vip);
-
- video_set_drvdata(&vip->video_dev, NULL);
- vb2_video_unregister_device(&vip->video_dev);
- free_irq(pdev->irq, vip);
- pci_disable_msi(pdev);
- pci_iounmap(pdev, vip->iomem);
- pci_release_regions(pdev);
-
- v4l2_device_unregister(&vip->v4l2_dev);
-
- 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
- */
-}
-
-/**
- * sta2x11_vip_suspend - set device into power save mode
- * @dev_d: PCI 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)
- */
-static int __maybe_unused sta2x11_vip_suspend(struct device *dev_d)
-{
- struct v4l2_device *v4l2_dev = dev_get_drvdata(dev_d);
- 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);
-
- vip->disabled = 1;
-
- pr_info("VIP: suspend\n");
- return 0;
-}
-
-/**
- * sta2x11_vip_resume - resume device operation
- * @dev_d : PCI device
- *
- * return value: 0, no error.
- *
- * other, could not set device to power on state.
- */
-static int __maybe_unused sta2x11_vip_resume(struct device *dev_d)
-{
- struct v4l2_device *v4l2_dev = dev_get_drvdata(dev_d);
- struct sta2x11_vip *vip =
- container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
- unsigned long flags;
- int i;
-
- pr_info("VIP: resume\n");
-
- vip->disabled = 0;
-
- 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;
-}
-
-static const struct pci_device_id sta2x11_vip_pci_tbl[] = {
- {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_VIP)},
- {0,}
-};
-
-static SIMPLE_DEV_PM_OPS(sta2x11_vip_pm_ops,
- sta2x11_vip_suspend,
- sta2x11_vip_resume);
-
-static struct pci_driver sta2x11_vip_driver = {
- .name = KBUILD_MODNAME,
- .probe = sta2x11_vip_init_one,
- .remove = sta2x11_vip_remove_one,
- .id_table = sta2x11_vip_pci_tbl,
- .driver.pm = &sta2x11_vip_pm_ops,
-};
-
-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_VERSION(DRV_VERSION);
-MODULE_DEVICE_TABLE(pci, sta2x11_vip_pci_tbl);
projects / thirdparty / kernel / linux.git / commitdiff
