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linux_dsm_epyc7002/drivers/media/pci/cx88/cx88-blackbird.c
Julia Lawall 10accd2e68 [media] pci: constify vb2_ops structures 
Check for vb2_ops structures that are only stored in the ops field of a
vb2_queue structure.  That field is declared const, so vb2_ops structures
that have this property can be declared as const also.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct vb2_ops i@p = { ... };

@ok@
identifier r.i;
struct vb2_queue e;
position p;
@@
e.ops = &i@p;

@bad@
position p != {r.p,ok.p};
identifier r.i;
struct vb2_ops e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct vb2_ops i = { ... };
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Andrey Utkin <andrey.utkin@corp.bluecherry.net>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-09-19 16:21:42 -03:00

1234 lines
34 KiB
C
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/*
*
* Support for a cx23416 mpeg encoder via cx2388x host port.
* "blackbird" reference design.
*
* (c) 2004 Jelle Foks <jelle@foks.us>
* (c) 2004 Gerd Knorr <kraxel@bytesex.org>
*
* (c) 2005-2006 Mauro Carvalho Chehab <mchehab@infradead.org>
* - video_ioctl2 conversion
*
* Includes parts from the ivtv driver <http://sourceforge.net/projects/ivtv/>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#include <media/drv-intf/cx2341x.h>
#include "cx88.h"
MODULE_DESCRIPTION("driver for cx2388x/cx23416 based mpeg encoder cards");
MODULE_AUTHOR("Jelle Foks <jelle@foks.us>, Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
MODULE_LICENSE("GPL");
MODULE_VERSION(CX88_VERSION);
static unsigned int debug;
module_param(debug,int,0644);
MODULE_PARM_DESC(debug,"enable debug messages [blackbird]");
#define dprintk(level, fmt, arg...) do { \
if (debug + 1 > level) \
printk(KERN_DEBUG "%s/2-bb: " fmt, dev->core->name , ## arg); \
} while(0)
/* ------------------------------------------------------------------ */
#define BLACKBIRD_FIRM_IMAGE_SIZE 376836
/* defines below are from ivtv-driver.h */
#define IVTV_CMD_HW_BLOCKS_RST 0xFFFFFFFF
/* Firmware API commands */
#define IVTV_API_STD_TIMEOUT 500
enum blackbird_capture_type {
BLACKBIRD_MPEG_CAPTURE,
BLACKBIRD_RAW_CAPTURE,
BLACKBIRD_RAW_PASSTHRU_CAPTURE
};
enum blackbird_capture_bits {
BLACKBIRD_RAW_BITS_NONE = 0x00,
BLACKBIRD_RAW_BITS_YUV_CAPTURE = 0x01,
BLACKBIRD_RAW_BITS_PCM_CAPTURE = 0x02,
BLACKBIRD_RAW_BITS_VBI_CAPTURE = 0x04,
BLACKBIRD_RAW_BITS_PASSTHRU_CAPTURE = 0x08,
BLACKBIRD_RAW_BITS_TO_HOST_CAPTURE = 0x10
};
enum blackbird_capture_end {
BLACKBIRD_END_AT_GOP, /* stop at the end of gop, generate irq */
BLACKBIRD_END_NOW, /* stop immediately, no irq */
};
enum blackbird_framerate {
BLACKBIRD_FRAMERATE_NTSC_30, /* NTSC: 30fps */
BLACKBIRD_FRAMERATE_PAL_25 /* PAL: 25fps */
};
enum blackbird_stream_port {
BLACKBIRD_OUTPUT_PORT_MEMORY,
BLACKBIRD_OUTPUT_PORT_STREAMING,
BLACKBIRD_OUTPUT_PORT_SERIAL
};
enum blackbird_data_xfer_status {
BLACKBIRD_MORE_BUFFERS_FOLLOW,
BLACKBIRD_LAST_BUFFER,
};
enum blackbird_picture_mask {
BLACKBIRD_PICTURE_MASK_NONE,
BLACKBIRD_PICTURE_MASK_I_FRAMES,
BLACKBIRD_PICTURE_MASK_I_P_FRAMES = 0x3,
BLACKBIRD_PICTURE_MASK_ALL_FRAMES = 0x7,
};
enum blackbird_vbi_mode_bits {
BLACKBIRD_VBI_BITS_SLICED,
BLACKBIRD_VBI_BITS_RAW,
};
enum blackbird_vbi_insertion_bits {
BLACKBIRD_VBI_BITS_INSERT_IN_XTENSION_USR_DATA,
BLACKBIRD_VBI_BITS_INSERT_IN_PRIVATE_PACKETS = 0x1 << 1,
BLACKBIRD_VBI_BITS_SEPARATE_STREAM = 0x2 << 1,
BLACKBIRD_VBI_BITS_SEPARATE_STREAM_USR_DATA = 0x4 << 1,
BLACKBIRD_VBI_BITS_SEPARATE_STREAM_PRV_DATA = 0x5 << 1,
};
enum blackbird_dma_unit {
BLACKBIRD_DMA_BYTES,
BLACKBIRD_DMA_FRAMES,
};
enum blackbird_dma_transfer_status_bits {
BLACKBIRD_DMA_TRANSFER_BITS_DONE = 0x01,
BLACKBIRD_DMA_TRANSFER_BITS_ERROR = 0x04,
BLACKBIRD_DMA_TRANSFER_BITS_LL_ERROR = 0x10,
};
enum blackbird_pause {
BLACKBIRD_PAUSE_ENCODING,
BLACKBIRD_RESUME_ENCODING,
};
enum blackbird_copyright {
BLACKBIRD_COPYRIGHT_OFF,
BLACKBIRD_COPYRIGHT_ON,
};
enum blackbird_notification_type {
BLACKBIRD_NOTIFICATION_REFRESH,
};
enum blackbird_notification_status {
BLACKBIRD_NOTIFICATION_OFF,
BLACKBIRD_NOTIFICATION_ON,
};
enum blackbird_notification_mailbox {
BLACKBIRD_NOTIFICATION_NO_MAILBOX = -1,
};
enum blackbird_field1_lines {
BLACKBIRD_FIELD1_SAA7114 = 0x00EF, /* 239 */
BLACKBIRD_FIELD1_SAA7115 = 0x00F0, /* 240 */
BLACKBIRD_FIELD1_MICRONAS = 0x0105, /* 261 */
};
enum blackbird_field2_lines {
BLACKBIRD_FIELD2_SAA7114 = 0x00EF, /* 239 */
BLACKBIRD_FIELD2_SAA7115 = 0x00F0, /* 240 */
BLACKBIRD_FIELD2_MICRONAS = 0x0106, /* 262 */
};
enum blackbird_custom_data_type {
BLACKBIRD_CUSTOM_EXTENSION_USR_DATA,
BLACKBIRD_CUSTOM_PRIVATE_PACKET,
};
enum blackbird_mute {
BLACKBIRD_UNMUTE,
BLACKBIRD_MUTE,
};
enum blackbird_mute_video_mask {
BLACKBIRD_MUTE_VIDEO_V_MASK = 0x0000FF00,
BLACKBIRD_MUTE_VIDEO_U_MASK = 0x00FF0000,
BLACKBIRD_MUTE_VIDEO_Y_MASK = 0xFF000000,
};
enum blackbird_mute_video_shift {
BLACKBIRD_MUTE_VIDEO_V_SHIFT = 8,
BLACKBIRD_MUTE_VIDEO_U_SHIFT = 16,
BLACKBIRD_MUTE_VIDEO_Y_SHIFT = 24,
};
/* Registers */
#define IVTV_REG_ENC_SDRAM_REFRESH (0x07F8 /*| IVTV_REG_OFFSET*/)
#define IVTV_REG_ENC_SDRAM_PRECHARGE (0x07FC /*| IVTV_REG_OFFSET*/)
#define IVTV_REG_SPU (0x9050 /*| IVTV_REG_OFFSET*/)
#define IVTV_REG_HW_BLOCKS (0x9054 /*| IVTV_REG_OFFSET*/)
#define IVTV_REG_VPU (0x9058 /*| IVTV_REG_OFFSET*/)
#define IVTV_REG_APU (0xA064 /*| IVTV_REG_OFFSET*/)
/* ------------------------------------------------------------------ */
static void host_setup(struct cx88_core *core)
{
/* toggle reset of the host */
cx_write(MO_GPHST_SOFT_RST, 1);
udelay(100);
cx_write(MO_GPHST_SOFT_RST, 0);
udelay(100);
/* host port setup */
cx_write(MO_GPHST_WSC, 0x44444444U);
cx_write(MO_GPHST_XFR, 0);
cx_write(MO_GPHST_WDTH, 15);
cx_write(MO_GPHST_HDSHK, 0);
cx_write(MO_GPHST_MUX16, 0x44448888U);
cx_write(MO_GPHST_MODE, 0);
}
/* ------------------------------------------------------------------ */
#define P1_MDATA0 0x390000
#define P1_MDATA1 0x390001
#define P1_MDATA2 0x390002
#define P1_MDATA3 0x390003
#define P1_MADDR2 0x390004
#define P1_MADDR1 0x390005
#define P1_MADDR0 0x390006
#define P1_RDATA0 0x390008
#define P1_RDATA1 0x390009
#define P1_RDATA2 0x39000A
#define P1_RDATA3 0x39000B
#define P1_RADDR0 0x39000C
#define P1_RADDR1 0x39000D
#define P1_RRDWR 0x39000E
static int wait_ready_gpio0_bit1(struct cx88_core *core, u32 state)
{
unsigned long timeout = jiffies + msecs_to_jiffies(1);
u32 gpio0,need;
need = state ? 2 : 0;
for (;;) {
gpio0 = cx_read(MO_GP0_IO) & 2;
if (need == gpio0)
return 0;
if (time_after(jiffies,timeout))
return -1;
udelay(1);
}
}
static int memory_write(struct cx88_core *core, u32 address, u32 value)
{
/* Warning: address is dword address (4 bytes) */
cx_writeb(P1_MDATA0, (unsigned int)value);
cx_writeb(P1_MDATA1, (unsigned int)(value >> 8));
cx_writeb(P1_MDATA2, (unsigned int)(value >> 16));
cx_writeb(P1_MDATA3, (unsigned int)(value >> 24));
cx_writeb(P1_MADDR2, (unsigned int)(address >> 16) | 0x40);
cx_writeb(P1_MADDR1, (unsigned int)(address >> 8));
cx_writeb(P1_MADDR0, (unsigned int)address);
cx_read(P1_MDATA0);
cx_read(P1_MADDR0);
return wait_ready_gpio0_bit1(core,1);
}
static int memory_read(struct cx88_core *core, u32 address, u32 *value)
{
int retval;
u32 val;
/* Warning: address is dword address (4 bytes) */
cx_writeb(P1_MADDR2, (unsigned int)(address >> 16) & ~0xC0);
cx_writeb(P1_MADDR1, (unsigned int)(address >> 8));
cx_writeb(P1_MADDR0, (unsigned int)address);
cx_read(P1_MADDR0);
retval = wait_ready_gpio0_bit1(core,1);
cx_writeb(P1_MDATA3, 0);
val = (unsigned char)cx_read(P1_MDATA3) << 24;
cx_writeb(P1_MDATA2, 0);
val |= (unsigned char)cx_read(P1_MDATA2) << 16;
cx_writeb(P1_MDATA1, 0);
val |= (unsigned char)cx_read(P1_MDATA1) << 8;
cx_writeb(P1_MDATA0, 0);
val |= (unsigned char)cx_read(P1_MDATA0);
*value = val;
return retval;
}
static int register_write(struct cx88_core *core, u32 address, u32 value)
{
cx_writeb(P1_RDATA0, (unsigned int)value);
cx_writeb(P1_RDATA1, (unsigned int)(value >> 8));
cx_writeb(P1_RDATA2, (unsigned int)(value >> 16));
cx_writeb(P1_RDATA3, (unsigned int)(value >> 24));
cx_writeb(P1_RADDR0, (unsigned int)address);
cx_writeb(P1_RADDR1, (unsigned int)(address >> 8));
cx_writeb(P1_RRDWR, 1);
cx_read(P1_RDATA0);
cx_read(P1_RADDR0);
return wait_ready_gpio0_bit1(core,1);
}
static int register_read(struct cx88_core *core, u32 address, u32 *value)
{
int retval;
u32 val;
cx_writeb(P1_RADDR0, (unsigned int)address);
cx_writeb(P1_RADDR1, (unsigned int)(address >> 8));
cx_writeb(P1_RRDWR, 0);
cx_read(P1_RADDR0);
retval = wait_ready_gpio0_bit1(core,1);
val = (unsigned char)cx_read(P1_RDATA0);
val |= (unsigned char)cx_read(P1_RDATA1) << 8;
val |= (unsigned char)cx_read(P1_RDATA2) << 16;
val |= (unsigned char)cx_read(P1_RDATA3) << 24;
*value = val;
return retval;
}
/* ------------------------------------------------------------------ */
static int blackbird_mbox_func(void *priv, u32 command, int in, int out, u32 data[CX2341X_MBOX_MAX_DATA])
{
struct cx8802_dev *dev = priv;
unsigned long timeout;
u32 value, flag, retval;
int i;
dprintk(1,"%s: 0x%X\n", __func__, command);
/* this may not be 100% safe if we can't read any memory location
without side effects */
memory_read(dev->core, dev->mailbox - 4, &value);
if (value != 0x12345678) {
dprintk(0, "Firmware and/or mailbox pointer not initialized or corrupted\n");
return -EIO;
}
memory_read(dev->core, dev->mailbox, &flag);
if (flag) {
dprintk(0, "ERROR: Mailbox appears to be in use (%x)\n", flag);
return -EIO;
}
flag |= 1; /* tell 'em we're working on it */
memory_write(dev->core, dev->mailbox, flag);
/* write command + args + fill remaining with zeros */
memory_write(dev->core, dev->mailbox + 1, command); /* command code */
memory_write(dev->core, dev->mailbox + 3, IVTV_API_STD_TIMEOUT); /* timeout */
for (i = 0; i < in; i++) {
memory_write(dev->core, dev->mailbox + 4 + i, data[i]);
dprintk(1, "API Input %d = %d\n", i, data[i]);
}
for (; i < CX2341X_MBOX_MAX_DATA; i++)
memory_write(dev->core, dev->mailbox + 4 + i, 0);
flag |= 3; /* tell 'em we're done writing */
memory_write(dev->core, dev->mailbox, flag);
/* wait for firmware to handle the API command */
timeout = jiffies + msecs_to_jiffies(1000);
for (;;) {
memory_read(dev->core, dev->mailbox, &flag);
if (0 != (flag & 4))
break;
if (time_after(jiffies,timeout)) {
dprintk(0, "ERROR: API Mailbox timeout %x\n", command);
return -EIO;
}
udelay(10);
}
/* read output values */
for (i = 0; i < out; i++) {
memory_read(dev->core, dev->mailbox + 4 + i, data + i);
dprintk(1, "API Output %d = %d\n", i, data[i]);
}
memory_read(dev->core, dev->mailbox + 2, &retval);
dprintk(1, "API result = %d\n",retval);
flag = 0;
memory_write(dev->core, dev->mailbox, flag);
return retval;
}
/* ------------------------------------------------------------------ */
/* We don't need to call the API often, so using just one mailbox will probably suffice */
static int blackbird_api_cmd(struct cx8802_dev *dev, u32 command,
u32 inputcnt, u32 outputcnt, ...)
{
u32 data[CX2341X_MBOX_MAX_DATA];
va_list vargs;
int i, err;
va_start(vargs, outputcnt);
for (i = 0; i < inputcnt; i++) {
data[i] = va_arg(vargs, int);
}
err = blackbird_mbox_func(dev, command, inputcnt, outputcnt, data);
for (i = 0; i < outputcnt; i++) {
int *vptr = va_arg(vargs, int *);
*vptr = data[i];
}
va_end(vargs);
return err;
}
static int blackbird_find_mailbox(struct cx8802_dev *dev)
{
u32 signature[4]={0x12345678, 0x34567812, 0x56781234, 0x78123456};
int signaturecnt=0;
u32 value;
int i;
for (i = 0; i < BLACKBIRD_FIRM_IMAGE_SIZE; i++) {
memory_read(dev->core, i, &value);
if (value == signature[signaturecnt])
signaturecnt++;
else
signaturecnt = 0;
if (4 == signaturecnt) {
dprintk(1, "Mailbox signature found\n");
return i+1;
}
}
dprintk(0, "Mailbox signature values not found!\n");
return -EIO;
}
static int blackbird_load_firmware(struct cx8802_dev *dev)
{
static const unsigned char magic[8] = {
0xa7, 0x0d, 0x00, 0x00, 0x66, 0xbb, 0x55, 0xaa
};
const struct firmware *firmware;
int i, retval = 0;
u32 value = 0;
u32 checksum = 0;
__le32 *dataptr;
retval = register_write(dev->core, IVTV_REG_VPU, 0xFFFFFFED);
retval |= register_write(dev->core, IVTV_REG_HW_BLOCKS, IVTV_CMD_HW_BLOCKS_RST);
retval |= register_write(dev->core, IVTV_REG_ENC_SDRAM_REFRESH, 0x80000640);
retval |= register_write(dev->core, IVTV_REG_ENC_SDRAM_PRECHARGE, 0x1A);
msleep(1);
retval |= register_write(dev->core, IVTV_REG_APU, 0);
if (retval < 0)
dprintk(0, "Error with register_write\n");
retval = request_firmware(&firmware, CX2341X_FIRM_ENC_FILENAME,
&dev->pci->dev);
if (retval != 0) {
pr_err("Hotplug firmware request failed (%s).\n",
CX2341X_FIRM_ENC_FILENAME);
pr_err("Please fix your hotplug setup, the board will not work without firmware loaded!\n");
return -EIO;
}
if (firmware->size != BLACKBIRD_FIRM_IMAGE_SIZE) {
pr_err("Firmware size mismatch (have %zd, expected %d)\n",
firmware->size, BLACKBIRD_FIRM_IMAGE_SIZE);
release_firmware(firmware);
return -EINVAL;
}
if (0 != memcmp(firmware->data, magic, 8)) {
pr_err("Firmware magic mismatch, wrong file?\n");
release_firmware(firmware);
return -EINVAL;
}
/* transfer to the chip */
dprintk(1,"Loading firmware ...\n");
dataptr = (__le32 *)firmware->data;
for (i = 0; i < (firmware->size >> 2); i++) {
value = le32_to_cpu(*dataptr);
checksum += ~value;
memory_write(dev->core, i, value);
dataptr++;
}
/* read back to verify with the checksum */
for (i--; i >= 0; i--) {
memory_read(dev->core, i, &value);
checksum -= ~value;
}
release_firmware(firmware);
if (checksum) {
pr_err("Firmware load might have failed (checksum mismatch).\n");
return -EIO;
}
dprintk(0, "Firmware upload successful.\n");
retval |= register_write(dev->core, IVTV_REG_HW_BLOCKS, IVTV_CMD_HW_BLOCKS_RST);
retval |= register_read(dev->core, IVTV_REG_SPU, &value);
retval |= register_write(dev->core, IVTV_REG_SPU, value & 0xFFFFFFFE);
msleep(1);
retval |= register_read(dev->core, IVTV_REG_VPU, &value);
retval |= register_write(dev->core, IVTV_REG_VPU, value & 0xFFFFFFE8);
if (retval < 0)
dprintk(0, "Error with register_write\n");
return 0;
}
/**
Settings used by the windows tv app for PVR2000:
=================================================================================================================
Profile | Codec | Resolution | CBR/VBR | Video Qlty | V. Bitrate | Frmrate | Audio Codec | A. Bitrate | A. Mode
-----------------------------------------------------------------------------------------------------------------
MPEG-1 | MPEG1 | 352x288PAL | (CBR) | 1000:Optimal | 2000 Kbps | 25fps | MPG1 Layer2 | 224kbps | Stereo
MPEG-2 | MPEG2 | 720x576PAL | VBR | 600 :Good | 4000 Kbps | 25fps | MPG1 Layer2 | 224kbps | Stereo
VCD | MPEG1 | 352x288PAL | (CBR) | 1000:Optimal | 1150 Kbps | 25fps | MPG1 Layer2 | 224kbps | Stereo
DVD | MPEG2 | 720x576PAL | VBR | 600 :Good | 6000 Kbps | 25fps | MPG1 Layer2 | 224kbps | Stereo
DB* DVD | MPEG2 | 720x576PAL | CBR | 600 :Good | 6000 Kbps | 25fps | MPG1 Layer2 | 224kbps | Stereo
=================================================================================================================
*DB: "DirectBurn"
*/
static void blackbird_codec_settings(struct cx8802_dev *dev)
{
struct cx88_core *core = dev->core;
/* assign frame size */
blackbird_api_cmd(dev, CX2341X_ENC_SET_FRAME_SIZE, 2, 0,
core->height, core->width);
dev->cxhdl.width = core->width;
dev->cxhdl.height = core->height;
cx2341x_handler_set_50hz(&dev->cxhdl, dev->core->tvnorm & V4L2_STD_625_50);
cx2341x_handler_setup(&dev->cxhdl);
}
static int blackbird_initialize_codec(struct cx8802_dev *dev)
{
struct cx88_core *core = dev->core;
int version;
int retval;
dprintk(1,"Initialize codec\n");
retval = blackbird_api_cmd(dev, CX2341X_ENC_PING_FW, 0, 0); /* ping */
if (retval < 0) {
/* ping was not successful, reset and upload firmware */
cx_write(MO_SRST_IO, 0); /* SYS_RSTO=0 */
cx_write(MO_SRST_IO, 1); /* SYS_RSTO=1 */
retval = blackbird_load_firmware(dev);
if (retval < 0)
return retval;
retval = blackbird_find_mailbox(dev);
if (retval < 0)
return -1;
dev->mailbox = retval;
retval = blackbird_api_cmd(dev, CX2341X_ENC_PING_FW, 0, 0); /* ping */
if (retval < 0) {
dprintk(0, "ERROR: Firmware ping failed!\n");
return -1;
}
retval = blackbird_api_cmd(dev, CX2341X_ENC_GET_VERSION, 0, 1, &version);
if (retval < 0) {
dprintk(0, "ERROR: Firmware get encoder version failed!\n");
return -1;
}
dprintk(0, "Firmware version is 0x%08x\n", version);
}
cx_write(MO_PINMUX_IO, 0x88); /* 656-8bit IO and enable MPEG parallel IO */
cx_clear(MO_INPUT_FORMAT, 0x100); /* chroma subcarrier lock to normal? */
cx_write(MO_VBOS_CONTROL, 0x84A00); /* no 656 mode, 8-bit pixels, disable VBI */
cx_clear(MO_OUTPUT_FORMAT, 0x0008); /* Normal Y-limits to let the mpeg encoder sync */
blackbird_codec_settings(dev);
blackbird_api_cmd(dev, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, 0,
BLACKBIRD_FIELD1_SAA7115,
BLACKBIRD_FIELD2_SAA7115
);
blackbird_api_cmd(dev, CX2341X_ENC_SET_PLACEHOLDER, 12, 0,
BLACKBIRD_CUSTOM_EXTENSION_USR_DATA,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
return 0;
}
static int blackbird_start_codec(struct cx8802_dev *dev)
{
struct cx88_core *core = dev->core;
/* start capturing to the host interface */
u32 reg;
int i;
int lastchange = -1;
int lastval = 0;
for (i = 0; (i < 10) && (i < (lastchange + 4)); i++) {
reg = cx_read(AUD_STATUS);
dprintk(1, "AUD_STATUS:%dL: 0x%x\n", i, reg);
if ((reg & 0x0F) != lastval) {
lastval = reg & 0x0F;
lastchange = i;
}
msleep(100);
}
/* unmute audio source */
cx_clear(AUD_VOL_CTL, (1 << 6));
blackbird_api_cmd(dev, CX2341X_ENC_REFRESH_INPUT, 0, 0);
/* initialize the video input */
blackbird_api_cmd(dev, CX2341X_ENC_INITIALIZE_INPUT, 0, 0);
cx2341x_handler_set_busy(&dev->cxhdl, 1);
/* start capturing to the host interface */
blackbird_api_cmd(dev, CX2341X_ENC_START_CAPTURE, 2, 0,
BLACKBIRD_MPEG_CAPTURE,
BLACKBIRD_RAW_BITS_NONE
);
return 0;
}
static int blackbird_stop_codec(struct cx8802_dev *dev)
{
blackbird_api_cmd(dev, CX2341X_ENC_STOP_CAPTURE, 3, 0,
BLACKBIRD_END_NOW,
BLACKBIRD_MPEG_CAPTURE,
BLACKBIRD_RAW_BITS_NONE
);
cx2341x_handler_set_busy(&dev->cxhdl, 0);
return 0;
}
/* ------------------------------------------------------------------ */
static int queue_setup(struct vb2_queue *q,
unsigned int *num_buffers, unsigned int *num_planes,
unsigned int sizes[], struct device *alloc_devs[])
{
struct cx8802_dev *dev = q->drv_priv;
*num_planes = 1;
dev->ts_packet_size = 188 * 4;
dev->ts_packet_count = 32;
sizes[0] = dev->ts_packet_size * dev->ts_packet_count;
return 0;
}
static int buffer_prepare(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct cx8802_dev *dev = vb->vb2_queue->drv_priv;
struct cx88_buffer *buf = container_of(vbuf, struct cx88_buffer, vb);
return cx8802_buf_prepare(vb->vb2_queue, dev, buf);
}
static void buffer_finish(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct cx8802_dev *dev = vb->vb2_queue->drv_priv;
struct cx88_buffer *buf = container_of(vbuf, struct cx88_buffer, vb);
struct cx88_riscmem *risc = &buf->risc;
if (risc->cpu)
pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
memset(risc, 0, sizeof(*risc));
}
static void buffer_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct cx8802_dev *dev = vb->vb2_queue->drv_priv;
struct cx88_buffer *buf = container_of(vbuf, struct cx88_buffer, vb);
cx8802_buf_queue(dev, buf);
}
static int start_streaming(struct vb2_queue *q, unsigned int count)
{
struct cx8802_dev *dev = q->drv_priv;
struct cx88_dmaqueue *dmaq = &dev->mpegq;
struct cx8802_driver *drv;
struct cx88_buffer *buf;
unsigned long flags;
int err;
/* Make sure we can acquire the hardware */
drv = cx8802_get_driver(dev, CX88_MPEG_BLACKBIRD);
if (!drv) {
dprintk(1, "%s: blackbird driver is not loaded\n", __func__);
err = -ENODEV;
goto fail;
}
err = drv->request_acquire(drv);
if (err != 0) {
dprintk(1, "%s: Unable to acquire hardware, %d\n", __func__, err);
goto fail;
}
if (blackbird_initialize_codec(dev) < 0) {
drv->request_release(drv);
err = -EINVAL;
goto fail;
}
err = blackbird_start_codec(dev);
if (err == 0) {
buf = list_entry(dmaq->active.next, struct cx88_buffer, list);
cx8802_start_dma(dev, dmaq, buf);
return 0;
}
fail:
spin_lock_irqsave(&dev->slock, flags);
while (!list_empty(&dmaq->active)) {
struct cx88_buffer *buf = list_entry(dmaq->active.next,
struct cx88_buffer, list);
list_del(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
}
spin_unlock_irqrestore(&dev->slock, flags);
return err;
}
static void stop_streaming(struct vb2_queue *q)
{
struct cx8802_dev *dev = q->drv_priv;
struct cx88_dmaqueue *dmaq = &dev->mpegq;
struct cx8802_driver *drv = NULL;
unsigned long flags;
cx8802_cancel_buffers(dev);
blackbird_stop_codec(dev);
/* Make sure we release the hardware */
drv = cx8802_get_driver(dev, CX88_MPEG_BLACKBIRD);
WARN_ON(!drv);
if (drv)
drv->request_release(drv);
spin_lock_irqsave(&dev->slock, flags);
while (!list_empty(&dmaq->active)) {
struct cx88_buffer *buf = list_entry(dmaq->active.next,
struct cx88_buffer, list);
list_del(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
}
spin_unlock_irqrestore(&dev->slock, flags);
}
static const struct vb2_ops blackbird_qops = {
.queue_setup = queue_setup,
.buf_prepare = buffer_prepare,
.buf_finish = buffer_finish,
.buf_queue = buffer_queue,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
.start_streaming = start_streaming,
.stop_streaming = stop_streaming,
};
/* ------------------------------------------------------------------ */
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
strcpy(cap->driver, "cx88_blackbird");
sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
cx88_querycap(file, core, cap);
return 0;
}
static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (f->index != 0)
return -EINVAL;
strlcpy(f->description, "MPEG", sizeof(f->description));
f->pixelformat = V4L2_PIX_FMT_MPEG;
f->flags = V4L2_FMT_FLAG_COMPRESSED;
return 0;
}
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
f->fmt.pix.bytesperline = 0;
f->fmt.pix.sizeimage = dev->ts_packet_size * dev->ts_packet_count;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
f->fmt.pix.width = core->width;
f->fmt.pix.height = core->height;
f->fmt.pix.field = core->field;
return 0;
}
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
unsigned maxw, maxh;
enum v4l2_field field;
f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
f->fmt.pix.bytesperline = 0;
f->fmt.pix.sizeimage = dev->ts_packet_size * dev->ts_packet_count;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
maxw = norm_maxw(core->tvnorm);
maxh = norm_maxh(core->tvnorm);
field = f->fmt.pix.field;
switch (field) {
case V4L2_FIELD_TOP:
case V4L2_FIELD_BOTTOM:
case V4L2_FIELD_INTERLACED:
case V4L2_FIELD_SEQ_BT:
case V4L2_FIELD_SEQ_TB:
break;
default:
field = (f->fmt.pix.height > maxh / 2)
? V4L2_FIELD_INTERLACED
: V4L2_FIELD_BOTTOM;
break;
}
if (V4L2_FIELD_HAS_T_OR_B(field))
maxh /= 2;
v4l_bound_align_image(&f->fmt.pix.width, 48, maxw, 2,
&f->fmt.pix.height, 32, maxh, 0, 0);
f->fmt.pix.field = field;
return 0;
}
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
if (vb2_is_busy(&dev->vb2_mpegq))
return -EBUSY;
if (core->v4ldev && (vb2_is_busy(&core->v4ldev->vb2_vidq) ||
vb2_is_busy(&core->v4ldev->vb2_vbiq)))
return -EBUSY;
vidioc_try_fmt_vid_cap(file, priv, f);
core->width = f->fmt.pix.width;
core->height = f->fmt.pix.height;
core->field = f->fmt.pix.field;
cx88_set_scale(core, f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.field);
blackbird_api_cmd(dev, CX2341X_ENC_SET_FRAME_SIZE, 2, 0,
f->fmt.pix.height, f->fmt.pix.width);
return 0;
}
static int vidioc_s_frequency (struct file *file, void *priv,
const struct v4l2_frequency *f)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
bool streaming;
if (unlikely(UNSET == core->board.tuner_type))
return -EINVAL;
if (unlikely(f->tuner != 0))
return -EINVAL;
streaming = vb2_start_streaming_called(&dev->vb2_mpegq);
if (streaming)
blackbird_stop_codec(dev);
cx88_set_freq (core,f);
blackbird_initialize_codec(dev);
cx88_set_scale(core, core->width, core->height,
core->field);
if (streaming)
blackbird_start_codec(dev);
return 0;
}
static int vidioc_log_status (struct file *file, void *priv)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
char name[32 + 2];
snprintf(name, sizeof(name), "%s/2", core->name);
call_all(core, core, log_status);
v4l2_ctrl_handler_log_status(&dev->cxhdl.hdl, name);
return 0;
}
static int vidioc_enum_input (struct file *file, void *priv,
struct v4l2_input *i)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
return cx88_enum_input (core,i);
}
static int vidioc_g_frequency (struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
if (unlikely(UNSET == core->board.tuner_type))
return -EINVAL;
if (unlikely(f->tuner != 0))
return -EINVAL;
f->frequency = core->freq;
call_all(core, tuner, g_frequency, f);
return 0;
}
static int vidioc_g_input (struct file *file, void *priv, unsigned int *i)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
*i = core->input;
return 0;
}
static int vidioc_s_input (struct file *file, void *priv, unsigned int i)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
if (i >= 4)
return -EINVAL;
if (0 == INPUT(i).type)
return -EINVAL;
cx88_newstation(core);
cx88_video_mux(core,i);
return 0;
}
static int vidioc_g_tuner (struct file *file, void *priv,
struct v4l2_tuner *t)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
u32 reg;
if (unlikely(UNSET == core->board.tuner_type))
return -EINVAL;
if (0 != t->index)
return -EINVAL;
strcpy(t->name, "Television");
t->capability = V4L2_TUNER_CAP_NORM;
t->rangehigh = 0xffffffffUL;
call_all(core, tuner, g_tuner, t);
cx88_get_stereo(core ,t);
reg = cx_read(MO_DEVICE_STATUS);
t->signal = (reg & (1<<5)) ? 0xffff : 0x0000;
return 0;
}
static int vidioc_s_tuner (struct file *file, void *priv,
const struct v4l2_tuner *t)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
if (UNSET == core->board.tuner_type)
return -EINVAL;
if (0 != t->index)
return -EINVAL;
cx88_set_stereo(core, t->audmode, 1);
return 0;
}
static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorm)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
*tvnorm = core->tvnorm;
return 0;
}
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
{
struct cx8802_dev *dev = video_drvdata(file);
struct cx88_core *core = dev->core;
return cx88_set_tvnorm(core, id);
}
static const struct v4l2_file_operations mpeg_fops =
{
.owner = THIS_MODULE,
.open = v4l2_fh_open,
.release = vb2_fop_release,
.read = vb2_fop_read,
.poll = vb2_fop_poll,
.mmap = vb2_fop_mmap,
.unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops mpeg_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_querybuf = vb2_ioctl_querybuf,
.vidioc_qbuf = vb2_ioctl_qbuf,
.vidioc_dqbuf = vb2_ioctl_dqbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_s_frequency = vidioc_s_frequency,
.vidioc_log_status = vidioc_log_status,
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
.vidioc_g_tuner = vidioc_g_tuner,
.vidioc_s_tuner = vidioc_s_tuner,
.vidioc_g_std = vidioc_g_std,
.vidioc_s_std = vidioc_s_std,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static struct video_device cx8802_mpeg_template = {
.name = "cx8802",
.fops = &mpeg_fops,
.ioctl_ops = &mpeg_ioctl_ops,
.tvnorms = CX88_NORMS,
};
/* ------------------------------------------------------------------ */
/* The CX8802 MPEG API will call this when we can use the hardware */
static int cx8802_blackbird_advise_acquire(struct cx8802_driver *drv)
{
struct cx88_core *core = drv->core;
int err = 0;
switch (core->boardnr) {
case CX88_BOARD_HAUPPAUGE_HVR1300:
/* By default, core setup will leave the cx22702 out of reset, on the bus.
* We left the hardware on power up with the cx22702 active.
* We're being given access to re-arrange the GPIOs.
* Take the bus off the cx22702 and put the cx23416 on it.
*/
/* Toggle reset on cx22702 leaving i2c active */
cx_set(MO_GP0_IO, 0x00000080);
udelay(1000);
cx_clear(MO_GP0_IO, 0x00000080);
udelay(50);
cx_set(MO_GP0_IO, 0x00000080);
udelay(1000);
/* tri-state the cx22702 pins */
cx_set(MO_GP0_IO, 0x00000004);
udelay(1000);
break;
default:
err = -ENODEV;
}
return err;
}
/* The CX8802 MPEG API will call this when we need to release the hardware */
static int cx8802_blackbird_advise_release(struct cx8802_driver *drv)
{
struct cx88_core *core = drv->core;
int err = 0;
switch (core->boardnr) {
case CX88_BOARD_HAUPPAUGE_HVR1300:
/* Exit leaving the cx23416 on the bus */
break;
default:
err = -ENODEV;
}
return err;
}
static void blackbird_unregister_video(struct cx8802_dev *dev)
{
video_unregister_device(&dev->mpeg_dev);
}
static int blackbird_register_video(struct cx8802_dev *dev)
{
int err;
cx88_vdev_init(dev->core, dev->pci, &dev->mpeg_dev,
&cx8802_mpeg_template, "mpeg");
dev->mpeg_dev.ctrl_handler = &dev->cxhdl.hdl;
video_set_drvdata(&dev->mpeg_dev, dev);
dev->mpeg_dev.queue = &dev->vb2_mpegq;
err = video_register_device(&dev->mpeg_dev, VFL_TYPE_GRABBER, -1);
if (err < 0) {
printk(KERN_INFO "%s/2: can't register mpeg device\n",
dev->core->name);
return err;
}
printk(KERN_INFO "%s/2: registered device %s [mpeg]\n",
dev->core->name, video_device_node_name(&dev->mpeg_dev));
return 0;
}
/* ----------------------------------------------------------- */
static int cx8802_blackbird_probe(struct cx8802_driver *drv)
{
struct cx88_core *core = drv->core;
struct cx8802_dev *dev = core->dvbdev;
struct vb2_queue *q;
int err;
dprintk( 1, "%s\n", __func__);
dprintk( 1, " ->being probed by Card=%d Name=%s, PCI %02x:%02x\n",
core->boardnr,
core->name,
core->pci_bus,
core->pci_slot);
err = -ENODEV;
if (!(core->board.mpeg & CX88_MPEG_BLACKBIRD))
goto fail_core;
dev->cxhdl.port = CX2341X_PORT_STREAMING;
dev->cxhdl.width = core->width;
dev->cxhdl.height = core->height;
dev->cxhdl.func = blackbird_mbox_func;
dev->cxhdl.priv = dev;
err = cx2341x_handler_init(&dev->cxhdl, 36);
if (err)
goto fail_core;
v4l2_ctrl_add_handler(&dev->cxhdl.hdl, &core->video_hdl, NULL);
/* blackbird stuff */
printk("%s/2: cx23416 based mpeg encoder (blackbird reference design)\n",
core->name);
host_setup(dev->core);
blackbird_initialize_codec(dev);
/* initial device configuration: needed ? */
// init_controls(core);
cx88_set_tvnorm(core,core->tvnorm);
cx88_video_mux(core,0);
cx2341x_handler_set_50hz(&dev->cxhdl, core->height == 576);
cx2341x_handler_setup(&dev->cxhdl);
q = &dev->vb2_mpegq;
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ;
q->gfp_flags = GFP_DMA32;
q->min_buffers_needed = 2;
q->drv_priv = dev;
q->buf_struct_size = sizeof(struct cx88_buffer);
q->ops = &blackbird_qops;
q->mem_ops = &vb2_dma_sg_memops;
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->lock = &core->lock;
q->dev = &dev->pci->dev;
err = vb2_queue_init(q);
if (err < 0)
goto fail_core;
blackbird_register_video(dev);
return 0;
fail_core:
return err;
}
static int cx8802_blackbird_remove(struct cx8802_driver *drv)
{
struct cx88_core *core = drv->core;
struct cx8802_dev *dev = core->dvbdev;
/* blackbird */
blackbird_unregister_video(drv->core->dvbdev);
v4l2_ctrl_handler_free(&dev->cxhdl.hdl);
return 0;
}
static struct cx8802_driver cx8802_blackbird_driver = {
.type_id = CX88_MPEG_BLACKBIRD,
.hw_access = CX8802_DRVCTL_SHARED,
.probe = cx8802_blackbird_probe,
.remove = cx8802_blackbird_remove,
.advise_acquire = cx8802_blackbird_advise_acquire,
.advise_release = cx8802_blackbird_advise_release,
};
static int __init blackbird_init(void)
{
printk(KERN_INFO "cx2388x blackbird driver version %s loaded\n",
CX88_VERSION);
return cx8802_register_driver(&cx8802_blackbird_driver);
}
static void __exit blackbird_fini(void)
{
cx8802_unregister_driver(&cx8802_blackbird_driver);
}
module_init(blackbird_init);
module_exit(blackbird_fini);
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