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linuxdebug/drivers/media/pci/zoran/zoran_device.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Zoran zr36057/zr36067 PCI controller driver, for the
* Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
* Media Labs LML33/LML33R10.
*
* This part handles device access (PCI/I2C/codec/...)
*
* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <linux/spinlock.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/wait.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include "videocodec.h"
#include "zoran.h"
#include "zoran_device.h"
#include "zoran_card.h"
#define IRQ_MASK (ZR36057_ISR_GIRQ0 | \
ZR36057_ISR_GIRQ1 | \
ZR36057_ISR_JPEG_REP_IRQ)
static bool lml33dpath; /* default = 0
* 1 will use digital path in capture
* mode instead of analog. It can be
* used for picture adjustments using
* tool like xawtv while watching image
* on TV monitor connected to the output.
* However, due to absence of 75 Ohm
* load on Bt819 input, there will be
* some image imperfections
*/
module_param(lml33dpath, bool, 0644);
MODULE_PARM_DESC(lml33dpath, "Use digital path capture mode (on LML33 cards)");
/*
* initialize video front end
*/
static void zr36057_init_vfe(struct zoran *zr)
{
u32 reg;
reg = btread(ZR36057_VFESPFR);
reg |= ZR36057_VFESPFR_LITTLE_ENDIAN;
reg &= ~ZR36057_VFESPFR_VCLK_POL;
reg |= ZR36057_VFESPFR_EXT_FL;
reg |= ZR36057_VFESPFR_TOP_FIELD;
btwrite(reg, ZR36057_VFESPFR);
reg = btread(ZR36057_VDCR);
if (pci_pci_problems & PCIPCI_TRITON)
// || zr->revision < 1) // Revision 1 has also Triton support
reg &= ~ZR36057_VDCR_TRITON;
else
reg |= ZR36057_VDCR_TRITON;
btwrite(reg, ZR36057_VDCR);
}
/*
* General Purpose I/O and Guest bus access
*/
/*
* This is a bit tricky. When a board lacks a GPIO function, the corresponding
* GPIO bit number in the card_info structure is set to 0.
*/
void GPIO(struct zoran *zr, int bit, unsigned int value)
{
u32 reg;
u32 mask;
/* Make sure the bit number is legal
* A bit number of -1 (lacking) gives a mask of 0,
* making it harmless
*/
mask = (1 << (24 + bit)) & 0xff000000;
reg = btread(ZR36057_GPPGCR1) & ~mask;
if (value)
reg |= mask;
btwrite(reg, ZR36057_GPPGCR1);
udelay(1);
}
/*
* Wait til post office is no longer busy
*/
int post_office_wait(struct zoran *zr)
{
u32 por;
while ((por = btread(ZR36057_POR)) & ZR36057_POR_PO_PEN) {
/* wait for something to happen */
/* TODO add timeout */
}
if ((por & ZR36057_POR_PO_TIME) && !zr->card.gws_not_connected) {
/* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
pci_info(zr->pci_dev, "pop timeout %08x\n", por);
return -1;
}
return 0;
}
int post_office_write(struct zoran *zr, unsigned int guest,
unsigned int reg, unsigned int value)
{
u32 por;
por =
ZR36057_POR_PO_DIR | ZR36057_POR_PO_TIME | ((guest & 7) << 20) |
((reg & 7) << 16) | (value & 0xFF);
btwrite(por, ZR36057_POR);
return post_office_wait(zr);
}
int post_office_read(struct zoran *zr, unsigned int guest, unsigned int reg)
{
u32 por;
por = ZR36057_POR_PO_TIME | ((guest & 7) << 20) | ((reg & 7) << 16);
btwrite(por, ZR36057_POR);
if (post_office_wait(zr) < 0)
return -1;
return btread(ZR36057_POR) & 0xFF;
}
/*
* JPEG Codec access
*/
void jpeg_codec_sleep(struct zoran *zr, int sleep)
{
GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_SLEEP], !sleep);
if (!sleep) {
pci_dbg(zr->pci_dev, "%s() - wake GPIO=0x%08x\n",
__func__, btread(ZR36057_GPPGCR1));
usleep_range(500, 1000);
} else {
pci_dbg(zr->pci_dev, "%s() - sleep GPIO=0x%08x\n",
__func__, btread(ZR36057_GPPGCR1));
udelay(2);
}
}
int jpeg_codec_reset(struct zoran *zr)
{
/* Take the codec out of sleep */
jpeg_codec_sleep(zr, 0);
if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
0);
udelay(2);
} else {
GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 0);
udelay(2);
GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 1);
udelay(2);
}
return 0;
}
/*
* Set the registers for the size we have specified. Don't bother
* trying to understand this without the ZR36057 manual in front of
* you [AC].
*/
static void zr36057_adjust_vfe(struct zoran *zr, enum zoran_codec_mode mode)
{
u32 reg;
switch (mode) {
case BUZ_MODE_MOTION_DECOMPRESS:
btand(~ZR36057_VFESPFR_EXT_FL, ZR36057_VFESPFR);
reg = btread(ZR36057_VFEHCR);
if ((reg & (1 << 10)) && zr->card.type != LML33R10)
reg += ((1 << 10) | 1);
btwrite(reg, ZR36057_VFEHCR);
break;
case BUZ_MODE_MOTION_COMPRESS:
case BUZ_MODE_IDLE:
default:
if ((zr->norm & V4L2_STD_NTSC) ||
(zr->card.type == LML33R10 &&
(zr->norm & V4L2_STD_PAL)))
btand(~ZR36057_VFESPFR_EXT_FL, ZR36057_VFESPFR);
else
btor(ZR36057_VFESPFR_EXT_FL, ZR36057_VFESPFR);
reg = btread(ZR36057_VFEHCR);
if (!(reg & (1 << 10)) && zr->card.type != LML33R10)
reg -= ((1 << 10) | 1);
btwrite(reg, ZR36057_VFEHCR);
break;
}
}
/*
* set geometry
*/
static void zr36057_set_vfe(struct zoran *zr, int video_width, int video_height,
const struct zoran_format *format)
{
const struct tvnorm *tvn;
unsigned int h_start, h_end, v_start, v_end;
unsigned int disp_mode;
unsigned int vid_win_wid, vid_win_ht;
unsigned int hcrop1, hcrop2, vcrop1, vcrop2;
unsigned int wa, we, ha, he;
unsigned int X, Y, hor_dcm, ver_dcm;
u32 reg;
tvn = zr->timing;
wa = tvn->wa;
ha = tvn->ha;
pci_dbg(zr->pci_dev, "set_vfe() - width = %d, height = %d\n", video_width, video_height);
if (video_width < BUZ_MIN_WIDTH ||
video_height < BUZ_MIN_HEIGHT ||
video_width > wa || video_height > ha) {
pci_err(zr->pci_dev, "set_vfe: w=%d h=%d not valid\n", video_width, video_height);
return;
}
/**** zr36057 ****/
/* horizontal */
vid_win_wid = video_width;
X = DIV_ROUND_UP(vid_win_wid * 64, tvn->wa);
we = (vid_win_wid * 64) / X;
hor_dcm = 64 - X;
hcrop1 = 2 * ((tvn->wa - we) / 4);
hcrop2 = tvn->wa - we - hcrop1;
h_start = tvn->h_start ? tvn->h_start : 1;
/* (Ronald) Original comment:
* "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
* this is false. It inverses chroma values on the LML33R10 (so Cr
* suddenly is shown as Cb and reverse, really cool effect if you
* want to see blue faces, not useful otherwise). So don't use |1.
* However, the DC10 has '0' as h_start, but does need |1, so we
* use a dirty check...
*/
h_end = h_start + tvn->wa - 1;
h_start += hcrop1;
h_end -= hcrop2;
reg = ((h_start & ZR36057_VFEHCR_HMASK) << ZR36057_VFEHCR_H_START)
| ((h_end & ZR36057_VFEHCR_HMASK) << ZR36057_VFEHCR_H_END);
if (zr->card.vfe_pol.hsync_pol)
reg |= ZR36057_VFEHCR_HS_POL;
btwrite(reg, ZR36057_VFEHCR);
/* Vertical */
disp_mode = !(video_height > BUZ_MAX_HEIGHT / 2);
vid_win_ht = disp_mode ? video_height : video_height / 2;
Y = DIV_ROUND_UP(vid_win_ht * 64 * 2, tvn->ha);
he = (vid_win_ht * 64) / Y;
ver_dcm = 64 - Y;
vcrop1 = (tvn->ha / 2 - he) / 2;
vcrop2 = tvn->ha / 2 - he - vcrop1;
v_start = tvn->v_start;
// FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
v_end = v_start + tvn->ha / 2; // - 1;
v_start += vcrop1;
v_end -= vcrop2;
reg = ((v_start & ZR36057_VFEVCR_VMASK) << ZR36057_VFEVCR_V_START)
| ((v_end & ZR36057_VFEVCR_VMASK) << ZR36057_VFEVCR_V_END);
if (zr->card.vfe_pol.vsync_pol)
reg |= ZR36057_VFEVCR_VS_POL;
btwrite(reg, ZR36057_VFEVCR);
/* scaler and pixel format */
reg = 0;
reg |= (hor_dcm << ZR36057_VFESPFR_HOR_DCM);
reg |= (ver_dcm << ZR36057_VFESPFR_VER_DCM);
reg |= (disp_mode << ZR36057_VFESPFR_DISP_MODE);
/*
* RJ: I don't know, why the following has to be the opposite
* of the corresponding ZR36060 setting, but only this way
* we get the correct colors when uncompressing to the screen
*/
//reg |= ZR36057_VFESPFR_VCLK_POL;
/* RJ: Don't know if that is needed for NTSC also */
if (!(zr->norm & V4L2_STD_NTSC))
reg |= ZR36057_VFESPFR_EXT_FL; // NEEDED!!!!!!! Wolfgang
reg |= ZR36057_VFESPFR_TOP_FIELD;
if (hor_dcm >= 48)
reg |= 3 << ZR36057_VFESPFR_H_FILTER; /* 5 tap filter */
else if (hor_dcm >= 32)
reg |= 2 << ZR36057_VFESPFR_H_FILTER; /* 4 tap filter */
else if (hor_dcm >= 16)
reg |= 1 << ZR36057_VFESPFR_H_FILTER; /* 3 tap filter */
reg |= format->vfespfr;
btwrite(reg, ZR36057_VFESPFR);
/* display configuration */
reg = (16 << ZR36057_VDCR_MIN_PIX)
| (vid_win_ht << ZR36057_VDCR_VID_WIN_HT)
| (vid_win_wid << ZR36057_VDCR_VID_WIN_WID);
if (pci_pci_problems & PCIPCI_TRITON)
// || zr->revision < 1) // Revision 1 has also Triton support
reg &= ~ZR36057_VDCR_TRITON;
else
reg |= ZR36057_VDCR_TRITON;
btwrite(reg, ZR36057_VDCR);
zr36057_adjust_vfe(zr, zr->codec_mode);
}
/* Enable/Disable uncompressed memory grabbing of the 36057 */
void zr36057_set_memgrab(struct zoran *zr, int mode)
{
if (mode) {
/* We only check SnapShot and not FrameGrab here. SnapShot==1
* means a capture is already in progress, but FrameGrab==1
* doesn't necessary mean that. It's more correct to say a 1
* to 0 transition indicates a capture completed. If a
* capture is pending when capturing is tuned off, FrameGrab
* will be stuck at 1 until capturing is turned back on.
*/
if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SNAP_SHOT)
pci_warn(zr->pci_dev, "%s(1) with SnapShot on!?\n", __func__);
/* switch on VSync interrupts */
btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
btor(zr->card.vsync_int, ZR36057_ICR); // SW
/* enable SnapShot */
btor(ZR36057_VSSFGR_SNAP_SHOT, ZR36057_VSSFGR);
/* Set zr36057 video front end and enable video */
zr36057_set_vfe(zr, zr->v4l_settings.width,
zr->v4l_settings.height,
zr->v4l_settings.format);
} else {
/* switch off VSync interrupts */
btand(~zr->card.vsync_int, ZR36057_ICR); // SW
/* re-enable grabbing to screen if it was running */
btand(~ZR36057_VDCR_VID_EN, ZR36057_VDCR);
btand(~ZR36057_VSSFGR_SNAP_SHOT, ZR36057_VSSFGR);
}
}
/*****************************************************************************
* *
* Set up the Buz-specific MJPEG part *
* *
*****************************************************************************/
static inline void set_frame(struct zoran *zr, int val)
{
GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
}
static void set_videobus_dir(struct zoran *zr, int val)
{
switch (zr->card.type) {
case LML33:
case LML33R10:
if (!lml33dpath)
GPIO(zr, 5, val);
else
GPIO(zr, 5, 1);
break;
default:
GPIO(zr, zr->card.gpio[ZR_GPIO_VID_DIR],
zr->card.gpio_pol[ZR_GPIO_VID_DIR] ? !val : val);
break;
}
}
static void init_jpeg_queue(struct zoran *zr)
{
int i;
/* re-initialize DMA ring stuff */
zr->jpg_que_head = 0;
zr->jpg_dma_head = 0;
zr->jpg_dma_tail = 0;
zr->jpg_que_tail = 0;
zr->jpg_seq_num = 0;
zr->jpeg_error = 0;
zr->num_errors = 0;
zr->jpg_err_seq = 0;
zr->jpg_err_shift = 0;
zr->jpg_queued_num = 0;
for (i = 0; i < BUZ_NUM_STAT_COM; i++)
zr->stat_com[i] = cpu_to_le32(1); /* mark as unavailable to zr36057 */
}
static void zr36057_set_jpg(struct zoran *zr, enum zoran_codec_mode mode)
{
const struct tvnorm *tvn;
u32 reg;
tvn = zr->timing;
/* assert P_Reset, disable code transfer, deassert Active */
btwrite(0, ZR36057_JPC);
/* MJPEG compression mode */
switch (mode) {
case BUZ_MODE_MOTION_COMPRESS:
default:
reg = ZR36057_JMC_MJPG_CMP_MODE;
break;
case BUZ_MODE_MOTION_DECOMPRESS:
reg = ZR36057_JMC_MJPG_EXP_MODE;
reg |= ZR36057_JMC_SYNC_MSTR;
/* RJ: The following is experimental - improves the output to screen */
//if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
break;
case BUZ_MODE_STILL_COMPRESS:
reg = ZR36057_JMC_JPG_CMP_MODE;
break;
case BUZ_MODE_STILL_DECOMPRESS:
reg = ZR36057_JMC_JPG_EXP_MODE;
break;
}
reg |= ZR36057_JMC_JPG;
if (zr->jpg_settings.field_per_buff == 1)
reg |= ZR36057_JMC_FLD_PER_BUFF;
btwrite(reg, ZR36057_JMC);
/* vertical */
btor(ZR36057_VFEVCR_VS_POL, ZR36057_VFEVCR);
reg = (6 << ZR36057_VSP_VSYNC_SIZE) |
(tvn->ht << ZR36057_VSP_FRM_TOT);
btwrite(reg, ZR36057_VSP);
reg = ((zr->jpg_settings.img_y + tvn->v_start) << ZR36057_FVAP_NAY) |
(zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
btwrite(reg, ZR36057_FVAP);
/* horizontal */
if (zr->card.vfe_pol.hsync_pol)
btor(ZR36057_VFEHCR_HS_POL, ZR36057_VFEHCR);
else
btand(~ZR36057_VFEHCR_HS_POL, ZR36057_VFEHCR);
reg = ((tvn->h_sync_start) << ZR36057_HSP_HSYNC_START) |
(tvn->wt << ZR36057_HSP_LINE_TOT);
btwrite(reg, ZR36057_HSP);
reg = ((zr->jpg_settings.img_x +
tvn->h_start + 4) << ZR36057_FHAP_NAX) |
(zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
btwrite(reg, ZR36057_FHAP);
/* field process parameters */
if (zr->jpg_settings.odd_even)
reg = ZR36057_FPP_ODD_EVEN;
else
reg = 0;
btwrite(reg, ZR36057_FPP);
/* Set proper VCLK Polarity, else colors will be wrong during playback */
//btor(ZR36057_VFESPFR_VCLK_POL, ZR36057_VFESPFR);
/* code base address */
btwrite(zr->p_sc, ZR36057_JCBA);
/* FIFO threshold (FIFO is 160. double words) */
/* NOTE: decimal values here */
switch (mode) {
case BUZ_MODE_STILL_COMPRESS:
case BUZ_MODE_MOTION_COMPRESS:
if (zr->card.type != BUZ)
reg = 140;
else
reg = 60;
break;
case BUZ_MODE_STILL_DECOMPRESS:
case BUZ_MODE_MOTION_DECOMPRESS:
reg = 20;
break;
default:
reg = 80;
break;
}
btwrite(reg, ZR36057_JCFT);
zr36057_adjust_vfe(zr, mode);
}
void clear_interrupt_counters(struct zoran *zr)
{
zr->intr_counter_GIRQ1 = 0;
zr->intr_counter_GIRQ0 = 0;
zr->intr_counter_cod_rep_irq = 0;
zr->intr_counter_jpeg_rep_irq = 0;
zr->field_counter = 0;
zr->irq1_in = 0;
zr->irq1_out = 0;
zr->jpeg_in = 0;
zr->jpeg_out = 0;
zr->JPEG_0 = 0;
zr->JPEG_1 = 0;
zr->end_event_missed = 0;
zr->jpeg_missed = 0;
zr->jpeg_max_missed = 0;
zr->jpeg_min_missed = 0x7fffffff;
}
static u32 count_reset_interrupt(struct zoran *zr)
{
u32 isr;
isr = btread(ZR36057_ISR) & 0x78000000;
if (isr) {
if (isr & ZR36057_ISR_GIRQ1) {
btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
zr->intr_counter_GIRQ1++;
}
if (isr & ZR36057_ISR_GIRQ0) {
btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
zr->intr_counter_GIRQ0++;
}
if (isr & ZR36057_ISR_COD_REP_IRQ) {
btwrite(ZR36057_ISR_COD_REP_IRQ, ZR36057_ISR);
zr->intr_counter_cod_rep_irq++;
}
if (isr & ZR36057_ISR_JPEG_REP_IRQ) {
btwrite(ZR36057_ISR_JPEG_REP_IRQ, ZR36057_ISR);
zr->intr_counter_jpeg_rep_irq++;
}
}
return isr;
}
void jpeg_start(struct zoran *zr)
{
int reg;
zr->frame_num = 0;
/* deassert P_reset, disable code transfer, deassert Active */
btwrite(ZR36057_JPC_P_RESET, ZR36057_JPC);
/* stop flushing the internal code buffer */
btand(~ZR36057_MCTCR_C_FLUSH, ZR36057_MCTCR);
/* enable code transfer */
btor(ZR36057_JPC_COD_TRNS_EN, ZR36057_JPC);
/* clear IRQs */
btwrite(IRQ_MASK, ZR36057_ISR);
/* enable the JPEG IRQs */
btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEG_REP_IRQ | ZR36057_ICR_INT_PIN_EN,
ZR36057_ICR);
set_frame(zr, 0); // \FRAME
/* set the JPEG codec guest ID */
reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPE_GUEST_ID) |
(0 << ZR36057_JCGI_JPE_GUEST_REG);
btwrite(reg, ZR36057_JCGI);
if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
zr->card.video_codec == CODEC_TYPE_ZR36050) {
/* Enable processing on the ZR36016 */
if (zr->vfe)
zr36016_write(zr->vfe, 0, 1);
/* load the address of the GO register in the ZR36050 latch */
post_office_write(zr, 0, 0, 0);
}
/* assert Active */
btor(ZR36057_JPC_ACTIVE, ZR36057_JPC);
/* enable the Go generation */
btor(ZR36057_JMC_GO_EN, ZR36057_JMC);
usleep_range(30, 100);
set_frame(zr, 1); // /FRAME
}
void zr36057_enable_jpg(struct zoran *zr, enum zoran_codec_mode mode)
{
struct vfe_settings cap;
int field_size = zr->buffer_size / zr->jpg_settings.field_per_buff;
zr->codec_mode = mode;
cap.x = zr->jpg_settings.img_x;
cap.y = zr->jpg_settings.img_y;
cap.width = zr->jpg_settings.img_width;
cap.height = zr->jpg_settings.img_height;
cap.decimation =
zr->jpg_settings.hor_dcm | (zr->jpg_settings.ver_dcm << 8);
cap.quality = zr->jpg_settings.jpg_comp.quality;
switch (mode) {
case BUZ_MODE_MOTION_COMPRESS: {
struct jpeg_app_marker app;
struct jpeg_com_marker com;
/* In motion compress mode, the decoder output must be enabled, and
* the video bus direction set to input.
*/
set_videobus_dir(zr, 0);
decoder_call(zr, video, s_stream, 1);
encoder_call(zr, video, s_routing, 0, 0, 0);
/* Take the JPEG codec and the VFE out of sleep */
jpeg_codec_sleep(zr, 0);
/* set JPEG app/com marker */
app.appn = zr->jpg_settings.jpg_comp.APPn;
app.len = zr->jpg_settings.jpg_comp.APP_len;
memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
sizeof(struct jpeg_app_marker), &app);
com.len = zr->jpg_settings.jpg_comp.COM_len;
memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
sizeof(struct jpeg_com_marker), &com);
/* Setup the JPEG codec */
zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
sizeof(int), &field_size);
zr->codec->set_video(zr->codec, zr->timing, &cap,
&zr->card.vfe_pol);
zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
/* Setup the VFE */
if (zr->vfe) {
zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
sizeof(int), &field_size);
zr->vfe->set_video(zr->vfe, zr->timing, &cap,
&zr->card.vfe_pol);
zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
}
init_jpeg_queue(zr);
zr36057_set_jpg(zr, mode); // \P_Reset, ... Video param, FIFO
clear_interrupt_counters(zr);
pci_dbg(zr->pci_dev, "enable_jpg(MOTION_COMPRESS)\n");
break;
}
case BUZ_MODE_MOTION_DECOMPRESS:
/* In motion decompression mode, the decoder output must be disabled, and
* the video bus direction set to output.
*/
decoder_call(zr, video, s_stream, 0);
set_videobus_dir(zr, 1);
encoder_call(zr, video, s_routing, 1, 0, 0);
/* Take the JPEG codec and the VFE out of sleep */
jpeg_codec_sleep(zr, 0);
/* Setup the VFE */
if (zr->vfe) {
zr->vfe->set_video(zr->vfe, zr->timing, &cap,
&zr->card.vfe_pol);
zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
}
/* Setup the JPEG codec */
zr->codec->set_video(zr->codec, zr->timing, &cap,
&zr->card.vfe_pol);
zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
init_jpeg_queue(zr);
zr36057_set_jpg(zr, mode); // \P_Reset, ... Video param, FIFO
clear_interrupt_counters(zr);
pci_dbg(zr->pci_dev, "enable_jpg(MOTION_DECOMPRESS)\n");
break;
case BUZ_MODE_IDLE:
default:
/* shut down processing */
btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEG_REP_IRQ),
ZR36057_ICR);
btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEG_REP_IRQ,
ZR36057_ISR);
btand(~ZR36057_JMC_GO_EN, ZR36057_JMC); // \Go_en
msleep(50);
set_videobus_dir(zr, 0);
set_frame(zr, 1); // /FRAME
btor(ZR36057_MCTCR_C_FLUSH, ZR36057_MCTCR); // /CFlush
btwrite(0, ZR36057_JPC); // \P_Reset,\CodTrnsEn,\Active
btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
btand(~ZR36057_JMC_SYNC_MSTR, ZR36057_JMC);
jpeg_codec_reset(zr);
jpeg_codec_sleep(zr, 1);
zr36057_adjust_vfe(zr, mode);
decoder_call(zr, video, s_stream, 1);
encoder_call(zr, video, s_routing, 0, 0, 0);
pci_dbg(zr->pci_dev, "enable_jpg(IDLE)\n");
break;
}
}
/* when this is called the spinlock must be held */
void zoran_feed_stat_com(struct zoran *zr)
{
/* move frames from pending queue to DMA */
int i, max_stat_com;
struct zr_buffer *buf;
struct vb2_v4l2_buffer *vbuf;
dma_addr_t phys_addr = 0;
unsigned long flags;
unsigned long payload;
max_stat_com =
(zr->jpg_settings.tmp_dcm ==
1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
spin_lock_irqsave(&zr->queued_bufs_lock, flags);
while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com) {
buf = list_first_entry_or_null(&zr->queued_bufs, struct zr_buffer, queue);
if (!buf) {
pci_err(zr->pci_dev, "No buffer available to queue\n");
spin_unlock_irqrestore(&zr->queued_bufs_lock, flags);
return;
}
list_del(&buf->queue);
zr->buf_in_reserve--;
vbuf = &buf->vbuf;
vbuf->vb2_buf.state = VB2_BUF_STATE_ACTIVE;
phys_addr = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
payload = vb2_get_plane_payload(&vbuf->vb2_buf, 0);
if (payload == 0)
payload = zr->buffer_size;
if (zr->jpg_settings.tmp_dcm == 1) {
/* fill 1 stat_com entry */
i = (zr->jpg_dma_head -
zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
if (!(zr->stat_com[i] & cpu_to_le32(1)))
break;
zr->stat_comb[i * 2] = cpu_to_le32(phys_addr);
zr->stat_comb[i * 2 + 1] = cpu_to_le32((payload >> 1) | 1);
zr->inuse[i] = buf;
zr->stat_com[i] = cpu_to_le32(zr->p_scb + i * 2 * 4);
} else {
/* fill 2 stat_com entries */
i = ((zr->jpg_dma_head -
zr->jpg_err_shift) & 1) * 2;
if (!(zr->stat_com[i] & cpu_to_le32(1)))
break;
zr->stat_com[i] = cpu_to_le32(zr->p_scb + i * 2 * 4);
zr->stat_com[i + 1] = cpu_to_le32(zr->p_scb + i * 2 * 4);
zr->stat_comb[i * 2] = cpu_to_le32(phys_addr);
zr->stat_comb[i * 2 + 1] = cpu_to_le32((payload >> 1) | 1);
zr->inuse[i] = buf;
zr->inuse[i + 1] = NULL;
}
zr->jpg_dma_head++;
}
spin_unlock_irqrestore(&zr->queued_bufs_lock, flags);
if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
zr->jpg_queued_num++;
}
/* when this is called the spinlock must be held */
static void zoran_reap_stat_com(struct zoran *zr)
{
/* move frames from DMA queue to done queue */
int i;
u32 stat_com;
unsigned int seq;
unsigned int dif;
unsigned long flags;
struct zr_buffer *buf;
unsigned int size = 0;
u32 fcnt;
/*
* In motion decompress we don't have a hardware frame counter,
* we just count the interrupts here
*/
if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
zr->jpg_seq_num++;
spin_lock_irqsave(&zr->queued_bufs_lock, flags);
while (zr->jpg_dma_tail < zr->jpg_dma_head) {
if (zr->jpg_settings.tmp_dcm == 1)
i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
else
i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
stat_com = le32_to_cpu(zr->stat_com[i]);
if ((stat_com & 1) == 0) {
spin_unlock_irqrestore(&zr->queued_bufs_lock, flags);
return;
}
fcnt = (stat_com & GENMASK(31, 24)) >> 24;
size = (stat_com & GENMASK(22, 1)) >> 1;
buf = zr->inuse[i];
if (!buf) {
spin_unlock_irqrestore(&zr->queued_bufs_lock, flags);
pci_err(zr->pci_dev, "No buffer at slot %d\n", i);
return;
}
buf->vbuf.vb2_buf.timestamp = ktime_get_ns();
if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
vb2_set_plane_payload(&buf->vbuf.vb2_buf, 0, size);
/* update sequence number with the help of the counter in stat_com */
seq = (fcnt + zr->jpg_err_seq) & 0xff;
dif = (seq - zr->jpg_seq_num) & 0xff;
zr->jpg_seq_num += dif;
}
buf->vbuf.sequence = zr->jpg_settings.tmp_dcm ==
2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
zr->inuse[i] = NULL;
if (zr->jpg_settings.tmp_dcm != 1)
buf->vbuf.field = zr->jpg_settings.odd_even ?
V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM;
else
buf->vbuf.field = zr->jpg_settings.odd_even ?
V4L2_FIELD_SEQ_TB : V4L2_FIELD_SEQ_BT;
vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_DONE);
zr->jpg_dma_tail++;
}
spin_unlock_irqrestore(&zr->queued_bufs_lock, flags);
}
irqreturn_t zoran_irq(int irq, void *dev_id)
{
struct zoran *zr = dev_id;
u32 stat, astat;
stat = count_reset_interrupt(zr);
astat = stat & IRQ_MASK;
if (astat & zr->card.vsync_int) {
if (zr->running == ZORAN_MAP_MODE_RAW) {
if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SNAP_SHOT) == 0)
pci_warn(zr->pci_dev, "BuzIRQ with SnapShot off ???\n");
if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_FRAME_GRAB) == 0)
zr_set_buf(zr);
return IRQ_HANDLED;
}
if (astat & ZR36057_ISR_JPEG_REP_IRQ) {
if (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS &&
zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) {
pci_err(zr->pci_dev, "JPG IRQ when not in good mode\n");
return IRQ_HANDLED;
}
zr->frame_num++;
zoran_reap_stat_com(zr);
zoran_feed_stat_com(zr);
return IRQ_HANDLED;
}
/* unused interrupts */
}
zr->ghost_int++;
return IRQ_HANDLED;
}
void zoran_set_pci_master(struct zoran *zr, int set_master)
{
if (set_master) {
pci_set_master(zr->pci_dev);
} else {
u16 command;
pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
command &= ~PCI_COMMAND_MASTER;
pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
}
}
void zoran_init_hardware(struct zoran *zr)
{
/* Enable bus-mastering */
zoran_set_pci_master(zr, 1);
/* Initialize the board */
if (zr->card.init)
zr->card.init(zr);
decoder_call(zr, core, init, 0);
decoder_call(zr, video, s_std, zr->norm);
decoder_call(zr, video, s_routing,
zr->card.input[zr->input].muxsel, 0, 0);
encoder_call(zr, core, init, 0);
encoder_call(zr, video, s_std_output, zr->norm);
encoder_call(zr, video, s_routing, 0, 0, 0);
/* toggle JPEG codec sleep to sync PLL */
jpeg_codec_sleep(zr, 1);
jpeg_codec_sleep(zr, 0);
/*
* set individual interrupt enables (without GIRQ1)
* but don't global enable until zoran_open()
*/
zr36057_init_vfe(zr);
zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
}
void zr36057_restart(struct zoran *zr)
{
btwrite(0, ZR36057_SPGPPCR);
usleep_range(1000, 2000);
btor(ZR36057_SPGPPCR_SOFT_RESET, ZR36057_SPGPPCR);
usleep_range(1000, 2000);
/* assert P_Reset */
btwrite(0, ZR36057_JPC);
/* set up GPIO direction - all output */
btwrite(ZR36057_SPGPPCR_SOFT_RESET | 0, ZR36057_SPGPPCR);
/* set up GPIO pins and guest bus timing */
btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
}