int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
{
struct ivtv *itv = s->itv;
if (s->v4l2dev == NULL)
return -EINVAL;
if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
return 0; /* already started */
IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
/* Clear Streamoff */
if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
/* Initialize Decoder */
/* Reprogram Decoder YUV Buffers for YUV */
write_reg(yuv_offset[0] >> 4, 0x82c);
write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830);
write_reg(yuv_offset[0] >> 4, 0x834);
write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838);
write_reg_sync(0x00000000 | (0x0c << 16) | (0x0b << 8), 0x2d24);
write_reg_sync(0x00108080, 0x2898);
/* Enable YUV decoder output */
write_reg_sync(0x01, IVTV_REG_VDM);
}
static void cx18_setsda(void *data, int state)
{
struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR;
u32 r = read_reg(addr);
if (state)
write_reg_sync(r | SETSDL_BIT, addr);
else
write_reg_sync(r & ~SETSDL_BIT, addr);
}
/* init + register i2c algo-bit adapter */
int init_cx18_i2c(struct cx18 *cx)
{
int i;
CX18_DEBUG_I2C("i2c init\n");
for (i = 0; i < 2; i++) {
memcpy(&cx->i2c_adap[i], &cx18_i2c_adap_template,
sizeof(struct i2c_adapter));
memcpy(&cx->i2c_algo[i], &cx18_i2c_algo_template,
sizeof(struct i2c_algo_bit_data));
cx->i2c_algo_cb_data[i].cx = cx;
cx->i2c_algo_cb_data[i].bus_index = i;
cx->i2c_algo[i].data = &cx->i2c_algo_cb_data[i];
cx->i2c_adap[i].algo_data = &cx->i2c_algo[i];
sprintf(cx->i2c_adap[i].name + strlen(cx->i2c_adap[i].name),
" #%d-%d", cx->num, i);
i2c_set_adapdata(&cx->i2c_adap[i], cx);
memcpy(&cx->i2c_client[i], &cx18_i2c_client_template,
sizeof(struct i2c_client));
sprintf(cx->i2c_client[i].name +
strlen(cx->i2c_client[i].name), "%d", i);
cx->i2c_client[i].adapter = &cx->i2c_adap[i];
cx->i2c_adap[i].dev.parent = &cx->dev->dev;
}
if (read_reg(CX18_REG_I2C_2_WR) != 0x0003c02f) {
/* Reset/Unreset I2C hardware block */
write_reg(0x10000000, 0xc71004); /* Clock select 220MHz */
write_reg_sync(0x10001000, 0xc71024); /* Clock Enable */
}
/* courtesy of Steven Toth <*****@*****.**> */
write_reg_sync(0x00c00000, 0xc7001c);
mdelay(10);
write_reg_sync(0x00c000c0, 0xc7001c);
mdelay(10);
write_reg_sync(0x00c00000, 0xc7001c);
write_reg_sync(0x00c00000, 0xc730c8); /* Set to edge-triggered intrs. */
write_reg_sync(0x00c00000, 0xc730c4); /* Clear any stale intrs */
/* Hw I2C1 Clock Freq ~100kHz */
write_reg_sync(0x00021c0f & ~4, CX18_REG_I2C_1_WR);
cx18_setscl(&cx->i2c_algo_cb_data[0], 1);
cx18_setsda(&cx->i2c_algo_cb_data[0], 1);
/* Hw I2C2 Clock Freq ~100kHz */
write_reg_sync(0x00021c0f & ~4, CX18_REG_I2C_2_WR);
cx18_setscl(&cx->i2c_algo_cb_data[1], 1);
cx18_setsda(&cx->i2c_algo_cb_data[1], 1);
cx18_reset_i2c_slaves_gpio(cx);
return i2c_bit_add_bus(&cx->i2c_adap[0]) ||
i2c_bit_add_bus(&cx->i2c_adap[1]);
}
void ivtv_udma_start(struct ivtv *itv)
{
IVTV_DEBUG_DMA("start UDMA\n");
write_reg(itv->udma.SG_handle, IVTV_REG_DECDMAADDR);
write_reg_sync(read_reg(IVTV_REG_DMAXFER) | 0x01, IVTV_REG_DMAXFER);
set_bit(IVTV_F_I_DMA, &itv->i_flags);
set_bit(IVTV_F_I_UDMA, &itv->i_flags);
}
void ivtv_set_irq_mask(struct ivtv *itv, u32 mask)
{
itv->irqmask |= mask;
write_reg_sync(itv->irqmask, IVTV_REG_IRQMASK);
}
void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask)
{
itv->irqmask &= ~mask;
write_reg_sync(itv->irqmask, IVTV_REG_IRQMASK);
}