static void omap_hsmmc_config_dma_params(struct omap_hsmmc_host *host,
struct mmc_data *data,
struct scatterlist *sgl)
{
int blksz, nblk, dma_ch;
dma_ch = host->dma_ch;
if (data->flags & MMC_DATA_WRITE) {
omap_set_dma_dest_params(dma_ch, 0, OMAP_DMA_AMODE_CONSTANT,
(host->mapbase + OMAP_HSMMC_DATA), 0, 0);
omap_set_dma_src_params(dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
sg_dma_address(sgl), 0, 0);
} else {
omap_set_dma_src_params(dma_ch, 0, OMAP_DMA_AMODE_CONSTANT,
(host->mapbase + OMAP_HSMMC_DATA), 0, 0);
omap_set_dma_dest_params(dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
sg_dma_address(sgl), 0, 0);
}
blksz = host->data->blksz;
nblk = sg_dma_len(sgl) / blksz;
omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S32,
blksz / 4, nblk, OMAP_DMA_SYNC_FRAME,
omap_hsmmc_get_dma_sync_dev(host, data),
!(data->flags & MMC_DATA_WRITE));
omap_start_dma(dma_ch);
}
static int audio_set_dma_params_capture(int channel, dma_addr_t dma_ptr,
u_int dma_size)
{
int dt = 0x1; /* data type 16 */
int cen = 16; /* mono */
int cfn = dma_size / (2 * cen);
unsigned long src_start;
int src_port = 0;
int sync_dev = 0;
int src_sync = 0;
FN_IN;
if (cpu_is_omap16xx()) {
src_start = (OMAP1610_MCBSP1_BASE + 0x802);
src_port = OMAP_DMA_PORT_MPUI;
}
if (cpu_is_omap24xx()) {
src_start = AUDIO_MCBSP_DATAREAD;
sync_dev = AUDIO_DMA_RX;
src_sync = 1;
}
omap_set_dma_src_params(channel, src_port, OMAP_DMA_AMODE_CONSTANT, src_start, 0, 0);
omap_set_dma_dest_params(channel, 0, OMAP_DMA_AMODE_POST_INC, dma_ptr, 0, 0);
omap_set_dma_transfer_params(channel, dt, cen, cfn, OMAP_DMA_SYNC_ELEMENT, sync_dev, src_sync);
FN_OUT(0);
return 0;
}
static int serial_omap_start_rxdma(struct uart_omap_port *up)
{
int ret = 0;
if (up->uart_dma.rx_dma_channel == -1) {
pm_runtime_get_sync(&up->pdev->dev);
ret = omap_request_dma(up->uart_dma.uart_dma_rx,
"UART Rx DMA",
(void *)uart_rx_dma_callback, up,
&(up->uart_dma.rx_dma_channel));
if (ret < 0)
return ret;
omap_set_dma_src_params(up->uart_dma.rx_dma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
up->uart_dma.uart_base, 0, 0);
omap_set_dma_dest_params(up->uart_dma.rx_dma_channel, 0,
OMAP_DMA_AMODE_POST_INC,
up->uart_dma.rx_buf_dma_phys, 0, 0);
omap_set_dma_transfer_params(up->uart_dma.rx_dma_channel,
OMAP_DMA_DATA_TYPE_S8,
up->uart_dma.rx_buf_size, 1,
OMAP_DMA_SYNC_ELEMENT,
up->uart_dma.uart_dma_rx, 0);
}
up->uart_dma.prev_rx_dma_pos = up->uart_dma.rx_buf_dma_phys;
omap_start_dma(up->uart_dma.rx_dma_channel);
mod_timer(&up->uart_dma.rx_timer, jiffies +
usecs_to_jiffies(up->uart_dma.rx_poll_rate));
up->uart_dma.rx_dma_used = true;
return ret;
}
static void serial_omap_continue_tx(struct uart_omap_port *up)
{
struct circ_buf *xmit = &up->port.state->xmit;
unsigned int start = up->uart_dma.tx_buf_dma_phys
+ (xmit->tail & (UART_XMIT_SIZE - 1));
if (uart_circ_empty(xmit))
return;
up->uart_dma.tx_buf_size = uart_circ_chars_pending(xmit);
/*
* It is a circular buffer. See if the buffer has wounded back.
* If yes it will have to be transferred in two separate dma
* transfers
*/
if (start + up->uart_dma.tx_buf_size >=
up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE)
up->uart_dma.tx_buf_size =
(up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE) - start;
omap_set_dma_dest_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
up->uart_dma.uart_base, 0, 0);
omap_set_dma_src_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_POST_INC, start, 0, 0);
omap_set_dma_transfer_params(up->uart_dma.tx_dma_channel,
OMAP_DMA_DATA_TYPE_S8,
up->uart_dma.tx_buf_size, 1,
OMAP_DMA_SYNC_ELEMENT,
up->uart_dma.uart_dma_tx, 0);
/* FIXME: Cache maintenance needed here? */
omap_start_dma(up->uart_dma.tx_dma_channel);
}
static void serial_omap_continue_tx(struct uart_omap_port *up)
{
struct circ_buf *xmit = &up->port.info->xmit;
int start = up->uart_dma.tx_buf_dma_phys + (xmit->tail & (UART_XMIT_SIZE - 1));
if (uart_circ_empty(xmit)) {
return;
}
up->uart_dma.tx_buf_size = uart_circ_chars_pending(xmit);
/* It is a circular buffer. See if the buffer has wounded back.
* If yes it will have to be transferred in two separate dma
* transfers
*/
if (start + up->uart_dma.tx_buf_size >=
up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE)
up->uart_dma.tx_buf_size =
(up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE) - start;
omap_set_dma_dest_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_CONSTANT, UART_BASE(up->pdev->id - 1), 0,0);
omap_set_dma_src_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_POST_INC, start, 0,0);
omap_set_dma_transfer_params(up->uart_dma.tx_dma_channel,
OMAP_DMA_DATA_TYPE_S8, up->uart_dma.tx_buf_size, 1,
OMAP_DMA_SYNC_ELEMENT,
uart_dma_tx[(up->pdev->id)-1], 0);
omap_start_dma(up->uart_dma.tx_dma_channel);
}
static void serial_omap_continue_tx(struct uart_omap_port *up)
{
struct circ_buf *xmit = &up->port.state->xmit;
unsigned int start = up->uart_dma.tx_buf_dma_phys
+ (xmit->tail & (UART_XMIT_SIZE - 1));
if (uart_circ_empty(xmit))
return;
up->uart_dma.tx_buf_size = uart_circ_chars_pending(xmit);
if (start + up->uart_dma.tx_buf_size >=
up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE)
up->uart_dma.tx_buf_size =
(up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE) - start;
omap_set_dma_dest_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
up->uart_dma.uart_base, 0, 0);
omap_set_dma_src_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_POST_INC, start, 0, 0);
omap_set_dma_transfer_params(up->uart_dma.tx_dma_channel,
OMAP_DMA_DATA_TYPE_S8,
up->uart_dma.tx_buf_size, 1,
OMAP_DMA_SYNC_ELEMENT,
up->uart_dma.uart_dma_tx, 0);
omap_start_dma(up->uart_dma.tx_dma_channel);
}
static void serial_omap_start_rxdma(struct uart_omap_port *up)
{
#ifdef CONFIG_OMAP3_PM
/* Disallow OCP bus idle. UART TX irqs are not seen during
* bus idle. Alternative is to set kernel timer at fifo
* drain rate.
*/
unsigned int tmp;
tmp = (serial_in(up, UART_OMAP_SYSC) & 0x7) | (1 << 3);
serial_out(up, UART_OMAP_SYSC, tmp); /* no-idle */
#endif
if (up->uart_dma.rx_dma_channel == 0xFF) {
omap_request_dma(uart_dma_rx[up->pdev->id-1],"UART Rx DMA",
(void *)uart_rx_dma_callback,up,
&(up->uart_dma.rx_dma_channel));
omap_set_dma_src_params(up->uart_dma.rx_dma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
UART_BASE(up->pdev->id - 1), 0, 0);
omap_set_dma_dest_params(up->uart_dma.rx_dma_channel, 0,
OMAP_DMA_AMODE_POST_INC,
up->uart_dma.rx_buf_dma_phys, 0, 0);
omap_set_dma_transfer_params(up->uart_dma.rx_dma_channel,
OMAP_DMA_DATA_TYPE_S8,
up->uart_dma.rx_buf_size, 1,
OMAP_DMA_SYNC_ELEMENT,
uart_dma_rx[up->pdev->id-1], 0);
}
up->uart_dma.prev_rx_dma_pos = up->uart_dma.rx_buf_dma_phys;
omap_writel(0, OMAP34XX_DMA4_BASE +
OMAP_DMA4_CDAC(up->uart_dma.rx_dma_channel));
omap_start_dma(up->uart_dma.rx_dma_channel);
mod_timer(&up->uart_dma.rx_timer, jiffies +
usecs_to_jiffies(up->uart_dma.rx_timeout));
up->uart_dma.rx_dma_state = 1;
}
static void serial_omap_start_tx(struct uart_port *port)
{
struct uart_omap_port *up = (struct uart_omap_port *)port;
struct circ_buf *xmit;
unsigned int start;
int ret = 0;
if (!up->use_dma) {
serial_omap_enable_ier_thri(up);
return;
}
if (up->uart_dma.tx_dma_used)
return;
xmit = &up->port.state->xmit;
if (up->uart_dma.tx_dma_channel == OMAP_UART_DMA_CH_FREE) {
ret = omap_request_dma(up->uart_dma.uart_dma_tx,
"UART Tx DMA",
(void *)uart_tx_dma_callback, up,
&(up->uart_dma.tx_dma_channel));
if (ret < 0) {
serial_omap_enable_ier_thri(up);
return;
}
}
spin_lock(&(up->uart_dma.tx_lock));
up->uart_dma.tx_dma_used = true;
spin_unlock(&(up->uart_dma.tx_lock));
start = up->uart_dma.tx_buf_dma_phys +
(xmit->tail & (UART_XMIT_SIZE - 1));
up->uart_dma.tx_buf_size = uart_circ_chars_pending(xmit);
/*
* It is a circular buffer. See if the buffer has wounded back.
* If yes it will have to be transferred in two separate dma
* transfers
*/
if (start + up->uart_dma.tx_buf_size >=
up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE)
up->uart_dma.tx_buf_size =
(up->uart_dma.tx_buf_dma_phys +
UART_XMIT_SIZE) - start;
omap_set_dma_dest_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
up->uart_dma.uart_base, 0, 0);
omap_set_dma_src_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_POST_INC, start, 0, 0);
omap_set_dma_transfer_params(up->uart_dma.tx_dma_channel,
OMAP_DMA_DATA_TYPE_S8,
up->uart_dma.tx_buf_size, 1,
OMAP_DMA_SYNC_ELEMENT,
up->uart_dma.uart_dma_tx, 0);
/* FIXME: Cache maintenance needed here? */
omap_start_dma(up->uart_dma.tx_dma_channel);
}
/***************************************************************************************
*
* DMA related functions
*
**************************************************************************************/
static int audio_set_dma_params_play(int channel, dma_addr_t dma_ptr,
u_int dma_size)
{
int dt = 0x1; /* data type 16 */
int cen = 32; /* Stereo */
int cfn = dma_size / (2 * cen);
unsigned long dest_start;
int dest_port = 0;
int sync_dev = 0;
FN_IN;
if (cpu_is_omap16xx()) {
dest_start = (OMAP1610_MCBSP1_BASE + 0x806);
dest_port = OMAP_DMA_PORT_MPUI;
}
if (cpu_is_omap24xx()) {
dest_start = AUDIO_MCBSP_DATAWRITE;
sync_dev = AUDIO_DMA_TX;
}
omap_set_dma_dest_params(channel, dest_port, OMAP_DMA_AMODE_CONSTANT, dest_start, 0, 0);
omap_set_dma_src_params(channel, 0, OMAP_DMA_AMODE_POST_INC, dma_ptr, 0, 0);
omap_set_dma_transfer_params(channel, dt, cen, cfn, OMAP_DMA_SYNC_ELEMENT, sync_dev, 0);
FN_OUT(0);
return 0;
}
static void serial_omap_start_tx(struct uart_port *port)
{
struct uart_omap_port *up = (struct uart_omap_port *)port;
#ifdef CONFIG_OMAP3_PM
/* Disallow OCP bus idle. UART TX irqs are not seen during
* bus idle. Alternative is to set kernel timer at fifo
* drain rate.
*/
unsigned int tmp;
tmp = (serial_in(up, UART_OMAP_SYSC) & 0x7) | (1 << 3);
serial_out(up, UART_OMAP_SYSC, tmp); /* no-idle */
#endif
if (up->use_dma && !(up->port.x_char)) {
struct circ_buf *xmit = &up->port.info->xmit;
unsigned int start = up->uart_dma.tx_buf_dma_phys +
(xmit->tail & (UART_XMIT_SIZE - 1));
if (uart_circ_empty(xmit) || up->uart_dma.tx_dma_state)
return;
spin_lock(&(up->uart_dma.tx_lock));
up->uart_dma.tx_dma_state = 1;
spin_unlock(&(up->uart_dma.tx_lock));
up->uart_dma.tx_buf_size = uart_circ_chars_pending(xmit);
/* It is a circular buffer. See if the buffer has wounded back.
* If yes it will have to be transferred in two separate dma
* transfers */
if (start + up->uart_dma.tx_buf_size >=
up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE)
up->uart_dma.tx_buf_size =
(up->uart_dma.tx_buf_dma_phys +
UART_XMIT_SIZE) - start;
if (up->uart_dma.tx_dma_channel == 0xFF)
omap_request_dma(uart_dma_tx[up->pdev->id-1],
"UART Tx DMA",
(void *)uart_tx_dma_callback, up,
&(up->uart_dma.tx_dma_channel));
omap_set_dma_dest_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
UART_BASE(up->pdev->id - 1), 0, 0);
omap_set_dma_src_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_POST_INC, start, 0, 0);
omap_set_dma_transfer_params(up->uart_dma.tx_dma_channel,
OMAP_DMA_DATA_TYPE_S8,
up->uart_dma.tx_buf_size, 1,
OMAP_DMA_SYNC_ELEMENT,
uart_dma_tx[(up->pdev->id)-1], 0);
omap_start_dma(up->uart_dma.tx_dma_channel);
} else if (!(up->ier & UART_IER_THRI)) {
up->ier |= UART_IER_THRI;
serial_out(up, UART_IER, up->ier);
}
}
/*
* Configure dma src and destination parameters
*/
static int mmc_omap_config_dma_param(int sync_dir, struct mmc_omap_host *host,
struct mmc_data *data)
{
if (sync_dir == 0) {
omap_set_dma_dest_params(host->dma_ch, 0,
OMAP_DMA_AMODE_CONSTANT,
(host->mapbase + OMAP_HSMMC_DATA), 0, 0);
omap_set_dma_src_params(host->dma_ch, 0,
OMAP_DMA_AMODE_POST_INC,
sg_dma_address(&data->sg[0]), 0, 0);
} else {
omap_set_dma_src_params(host->dma_ch, 0,
OMAP_DMA_AMODE_CONSTANT,
(host->mapbase + OMAP_HSMMC_DATA), 0, 0);
omap_set_dma_dest_params(host->dma_ch, 0,
OMAP_DMA_AMODE_POST_INC,
sg_dma_address(&data->sg[0]), 0, 0);
}
return 0;
}
static void omap1610_irda_start_rx_dma(struct omap1610_irda *si)
{
/* Configure DMA */
omap_set_dma_src_params(si->rx_dma_channel, 0x3, 0x0, (unsigned long)UART3_RHR);
omap_enable_dma_irq(si->rx_dma_channel, 0x01);
omap_set_dma_dest_params(si->rx_dma_channel, 0x0, 0x1,
si->rx_buf_dma_phys);
omap_set_dma_transfer_params(si->rx_dma_channel, 0x0, 4096, 0x1, 0x0);
omap_start_dma(si->rx_dma_channel);
}
static int audio_set_dma_params_capture(int channel, dma_addr_t dma_ptr,
u_int dma_size)
{
int dt = 0x1; /* data type 16 */
int cen = 32; /* stereo */
int cfn = dma_size / (2 * cen);
FN_IN;
omap_set_dma_src_params(channel, 0x05, 0x00,
(OMAP1510_MCBSP1_BASE + 0x02),
0, 0);
omap_set_dma_dest_params(channel, 0x00, 0x01, dma_ptr, 0, 0);
omap_set_dma_transfer_params(channel, dt, cen, cfn, 0x00, 0, 0);
FN_OUT(0);
return 0;
}
void omap_set_dma_params(int lch, struct omap_dma_channel_params *params)
{
omap_set_dma_transfer_params(lch, params->data_type,
params->elem_count, params->frame_count,
params->sync_mode, params->trigger,
params->src_or_dst_synch);
omap_set_dma_src_params(lch, params->src_port,
params->src_amode, params->src_start,
params->src_ei, params->src_fi);
omap_set_dma_dest_params(lch, params->dst_port,
params->dst_amode, params->dst_start,
params->dst_ei, params->dst_fi);
if (params->read_prio || params->write_prio)
omap_dma_set_prio_lch(lch, params->read_prio,
params->write_prio);
}
static void omap_start_tx_dma(struct omap_irda *omap_ir, int size)
{
/* Configure DMA */
omap_set_dma_dest_params(omap_ir->tx_dma_channel, 0x03, 0x0,
omap_ir->pdata->dest_start, 0, 0);
omap_enable_dma_irq(omap_ir->tx_dma_channel, 0x01);
omap_set_dma_src_params(omap_ir->tx_dma_channel, 0x0, 0x1,
omap_ir->tx_buf_dma_phys,
0, 0);
omap_set_dma_transfer_params(omap_ir->tx_dma_channel, 0x0, size, 0x1,
0x0, omap_ir->pdata->tx_trigger, 0);
/* Start DMA */
omap_start_dma(omap_ir->tx_dma_channel);
}
static int omap2_onenand_write_bufferram(struct mtd_info *mtd, int area,
const unsigned char *buffer,
int offset, size_t count)
{
struct omap2_onenand *c = container_of(mtd, struct omap2_onenand, mtd);
struct onenand_chip *this = mtd->priv;
dma_addr_t dma_src, dma_dst;
int bram_offset;
bram_offset = omap2_onenand_bufferram_offset(mtd, area) + area + offset;
/* DMA is not used. Revisit PM requirements before enabling it. */
if (1 || (c->dma_channel < 0) ||
((void *) buffer >= (void *) high_memory) || (bram_offset & 3) ||
(((unsigned int) buffer) & 3) || (count < 1024) || (count & 3)) {
memcpy((__force void *)(this->base + bram_offset), buffer,
count);
return 0;
}
dma_src = dma_map_single(&c->pdev->dev, (void *) buffer, count,
DMA_TO_DEVICE);
dma_dst = c->phys_base + bram_offset;
if (dma_mapping_error(&c->pdev->dev, dma_src)) {
dev_err(&c->pdev->dev,
"Couldn't DMA map a %d byte buffer\n",
count);
return -1;
}
omap_set_dma_transfer_params(c->dma_channel, OMAP_DMA_DATA_TYPE_S16,
count / 2, 1, 0, 0, 0);
omap_set_dma_src_params(c->dma_channel, 0, OMAP_DMA_AMODE_POST_INC,
dma_src, 0, 0);
omap_set_dma_dest_params(c->dma_channel, 0, OMAP_DMA_AMODE_POST_INC,
dma_dst, 0, 0);
INIT_COMPLETION(c->dma_done);
omap_start_dma(c->dma_channel);
wait_for_completion(&c->dma_done);
dma_unmap_single(&c->pdev->dev, dma_src, count, DMA_TO_DEVICE);
return 0;
}
static void omap_irda_start_rx_dma(struct omap_irda *omap_ir)
{
/* Configure DMA */
omap_set_dma_src_params(omap_ir->rx_dma_channel, 0x3, 0x0,
omap_ir->pdata->src_start,
0, 0);
omap_enable_dma_irq(omap_ir->rx_dma_channel, 0x01);
omap_set_dma_dest_params(omap_ir->rx_dma_channel, 0x0, 0x1,
omap_ir->rx_buf_dma_phys,
0, 0);
omap_set_dma_transfer_params(omap_ir->rx_dma_channel, 0x0,
IRDA_SKB_MAX_MTU, 0x1,
0x0, omap_ir->pdata->rx_trigger, 0);
omap_start_dma(omap_ir->rx_dma_channel);
}
/*
* ======== SCPY_configure ========
* Configure a transfer on the SDMA handle
*/
void SCPY_configure(IRES_SDMA_Handle handle, SCPY_Params * params)
{
/* SCPY_configure should be called with only one logicalChannel */
int logicalChannel = handle->channel->chanNum;
unsigned int dmaAddr = (unsigned int)(handle->channel->addr);
CMEM_init();
omap_set_dma_transfer_params(logicalChannel, dmaAddr,
params->transfer->dataType, params->transfer->elemCount,
params->transfer->frameCount);
omap_set_dma_src_params(logicalChannel, dmaAddr,
params->src->addr_mode, CMEM_getPhys((void *)(params->src->addr)),
params->src->elem_index, params->src->frame_index);
omap_set_dma_dest_params(logicalChannel, dmaAddr,
params->dst->addr_mode, CMEM_getPhys((void *)(params->dst->addr)),
params->dst->elem_index, params->dst->frame_index);
CMEM_exit();
}
static void omap1610_start_tx_dma(struct omap1610_irda *si, int size)
{
__ECHO_IN;
/* Configure DMA */
omap_set_dma_dest_params(si->tx_dma_channel, 0x03, 0x0, (unsigned long)UART3_THR);
omap_enable_dma_irq(si->tx_dma_channel, 0x01);
omap_set_dma_src_params(si->tx_dma_channel, 0x0, 0x1,
si->tx_buf_dma_phys);
omap_set_dma_transfer_params(si->tx_dma_channel, 0x0, size, 0x1, 0x0);
HDBG1(1);
/* Start DMA */
omap_start_dma(si->tx_dma_channel);
HDBG1(1);
__ECHO_OUT;
}
static int serial_omap_start_rxdma(struct uart_omap_port *up)
{
int ret = 0;
if (up->uart_dma.rx_dma_channel == -1) {
ret = omap_request_dma(up->uart_dma.uart_dma_rx,
"UART Rx DMA",
(void *)uart_rx_dma_callback, up,
&(up->uart_dma.rx_dma_channel));
if (ret < 0)
return ret;
omap_set_dma_src_params(up->uart_dma.rx_dma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
up->uart_dma.uart_base, 0, 0);
omap_set_dma_dest_params(up->uart_dma.rx_dma_channel, 0,
OMAP_DMA_AMODE_POST_INC,
up->uart_dma.rx_buf_dma_phys, 0, 0);
omap_set_dma_transfer_params(up->uart_dma.rx_dma_channel,
OMAP_DMA_DATA_TYPE_S8,
up->uart_dma.rx_buf_size, 1,
OMAP_DMA_SYNC_ELEMENT,
up->uart_dma.uart_dma_rx, 0);
}
up->uart_dma.prev_rx_dma_pos = up->uart_dma.rx_buf_dma_phys;
/* FIXME: Cache maintenance needed here? */
omap_start_dma(up->uart_dma.rx_dma_channel);
mod_timer(&up->uart_dma.rx_timer, jiffies +
usecs_to_jiffies(up->uart_dma.rx_poll_rate));
up->uart_dma.rx_dma_used = true;
if (up->plat_hold_wakelock)
(up->plat_hold_wakelock(up, WAKELK_RX));
return ret;
}
/* Prepare to transfer the next segment of a scatterlist */
static void
mmc_omap_prepare_dma(struct mmc_omap_host *host, struct mmc_data *data)
{
int dma_ch = host->dma_ch;
unsigned long data_addr;
u16 buf, frame;
u32 count;
struct scatterlist *sg = &data->sg[host->sg_idx];
int src_port = 0;
int dst_port = 0;
int sync_dev = 0;
data_addr = host->phys_base + OMAP_MMC_REG_DATA;
frame = data->blksz;
count = sg_dma_len(sg);
if ((data->blocks == 1) && (count > data->blksz))
count = frame;
host->dma_len = count;
/* FIFO is 16x2 bytes on 15xx, and 32x2 bytes on 16xx and 24xx.
* Use 16 or 32 word frames when the blocksize is at least that large.
* Blocksize is usually 512 bytes; but not for some SD reads.
*/
if (cpu_is_omap15xx() && frame > 32)
frame = 32;
else if (frame > 64)
frame = 64;
count /= frame;
frame >>= 1;
if (!(data->flags & MMC_DATA_WRITE)) {
buf = 0x800f | ((frame - 1) << 8);
if (cpu_class_is_omap1()) {
src_port = OMAP_DMA_PORT_TIPB;
dst_port = OMAP_DMA_PORT_EMIFF;
}
if (cpu_is_omap24xx())
sync_dev = OMAP24XX_DMA_MMC1_RX;
omap_set_dma_src_params(dma_ch, src_port,
OMAP_DMA_AMODE_CONSTANT,
data_addr, 0, 0);
omap_set_dma_dest_params(dma_ch, dst_port,
OMAP_DMA_AMODE_POST_INC,
sg_dma_address(sg), 0, 0);
omap_set_dma_dest_data_pack(dma_ch, 1);
omap_set_dma_dest_burst_mode(dma_ch, OMAP_DMA_DATA_BURST_4);
} else {
buf = 0x0f80 | ((frame - 1) << 0);
if (cpu_class_is_omap1()) {
src_port = OMAP_DMA_PORT_EMIFF;
dst_port = OMAP_DMA_PORT_TIPB;
}
if (cpu_is_omap24xx())
sync_dev = OMAP24XX_DMA_MMC1_TX;
omap_set_dma_dest_params(dma_ch, dst_port,
OMAP_DMA_AMODE_CONSTANT,
data_addr, 0, 0);
omap_set_dma_src_params(dma_ch, src_port,
OMAP_DMA_AMODE_POST_INC,
sg_dma_address(sg), 0, 0);
omap_set_dma_src_data_pack(dma_ch, 1);
omap_set_dma_src_burst_mode(dma_ch, OMAP_DMA_DATA_BURST_4);
}
/* Max limit for DMA frame count is 0xffff */
BUG_ON(count > 0xffff);
OMAP_MMC_WRITE(host, BUF, buf);
omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S16,
frame, count, OMAP_DMA_SYNC_FRAME,
sync_dev, 0);
}
static void serial_omap_start_tx(struct uart_port *port)
{
struct uart_omap_port *up = (struct uart_omap_port *)port;
struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
struct circ_buf *xmit;
unsigned int start;
int ret = 0;
if (!up->use_dma) {
pm_runtime_get_sync(&up->pdev->dev);
serial_omap_enable_ier_thri(up);
if (pdata && pdata->set_noidle)
pdata->set_noidle(up->pdev);
pm_runtime_mark_last_busy(&up->pdev->dev);
pm_runtime_put_autosuspend(&up->pdev->dev);
return;
}
if (up->uart_dma.tx_dma_used)
return;
xmit = &up->port.state->xmit;
if (up->uart_dma.tx_dma_channel == OMAP_UART_DMA_CH_FREE) {
pm_runtime_get_sync(&up->pdev->dev);
ret = omap_request_dma(up->uart_dma.uart_dma_tx,
"UART Tx DMA",
(void *)uart_tx_dma_callback, up,
&(up->uart_dma.tx_dma_channel));
if (ret < 0) {
serial_omap_enable_ier_thri(up);
return;
}
}
spin_lock(&(up->uart_dma.tx_lock));
up->uart_dma.tx_dma_used = true;
spin_unlock(&(up->uart_dma.tx_lock));
start = up->uart_dma.tx_buf_dma_phys +
(xmit->tail & (UART_XMIT_SIZE - 1));
up->uart_dma.tx_buf_size = uart_circ_chars_pending(xmit);
if (start + up->uart_dma.tx_buf_size >=
up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE)
up->uart_dma.tx_buf_size =
(up->uart_dma.tx_buf_dma_phys +
UART_XMIT_SIZE) - start;
omap_set_dma_dest_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
up->uart_dma.uart_base, 0, 0);
omap_set_dma_src_params(up->uart_dma.tx_dma_channel, 0,
OMAP_DMA_AMODE_POST_INC, start, 0, 0);
omap_set_dma_transfer_params(up->uart_dma.tx_dma_channel,
OMAP_DMA_DATA_TYPE_S8,
up->uart_dma.tx_buf_size, 1,
OMAP_DMA_SYNC_ELEMENT,
up->uart_dma.uart_dma_tx, 0);
omap_start_dma(up->uart_dma.tx_dma_channel);
}
int omap_vout_prepare_vrfb(struct omap_vout_device *vout,
struct videobuf_buffer *vb)
{
dma_addr_t dmabuf;
struct vid_vrfb_dma *tx;
enum dss_rotation rotation;
u32 dest_frame_index = 0, src_element_index = 0;
u32 dest_element_index = 0, src_frame_index = 0;
u32 elem_count = 0, frame_count = 0, pixsize = 2;
if (!is_rotation_enabled(vout))
return 0;
dmabuf = vout->buf_phy_addr[vb->i];
/* If rotation is enabled, copy input buffer into VRFB
* memory space using DMA. We are copying input buffer
* into VRFB memory space of desired angle and DSS will
* read image VRFB memory for 0 degree angle
*/
pixsize = vout->bpp * vout->vrfb_bpp;
/*
* DMA transfer in double index mode
*/
/* Frame index */
dest_frame_index = ((MAX_PIXELS_PER_LINE * pixsize) -
(vout->pix.width * vout->bpp)) + 1;
/* Source and destination parameters */
src_element_index = 0;
src_frame_index = 0;
dest_element_index = 1;
/* Number of elements per frame */
elem_count = vout->pix.width * vout->bpp;
frame_count = vout->pix.height;
tx = &vout->vrfb_dma_tx;
tx->tx_status = 0;
omap_set_dma_transfer_params(tx->dma_ch, OMAP_DMA_DATA_TYPE_S32,
(elem_count / 4), frame_count, OMAP_DMA_SYNC_ELEMENT,
tx->dev_id, 0x0);
/* src_port required only for OMAP1 */
omap_set_dma_src_params(tx->dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
dmabuf, src_element_index, src_frame_index);
/*set dma source burst mode for VRFB */
omap_set_dma_src_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16);
rotation = calc_rotation(vout);
/* dest_port required only for OMAP1 */
omap_set_dma_dest_params(tx->dma_ch, 0, OMAP_DMA_AMODE_DOUBLE_IDX,
vout->vrfb_context[vb->i].paddr[0], dest_element_index,
dest_frame_index);
/*set dma dest burst mode for VRFB */
omap_set_dma_dest_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16);
omap_dma_set_global_params(DMA_DEFAULT_ARB_RATE, 0x20, 0);
omap_start_dma(tx->dma_ch);
wait_event_interruptible_timeout(tx->wait, tx->tx_status == 1,
VRFB_TX_TIMEOUT);
if (tx->tx_status == 0) {
omap_stop_dma(tx->dma_ch);
return -EINVAL;
}
/* Store buffers physical address into an array. Addresses
* from this array will be used to configure DSS */
vout->queued_buf_addr[vb->i] = (u8 *)
vout->vrfb_context[vb->i].paddr[rotation];
return 0;
}
static void musb_sdma_channel_program(struct musb *musb,
struct musb_dma_channel *musb_channel,
dma_addr_t dma_addr, u32 len)
{
u16 frame = len;
int data_type = OMAP_DMA_DATA_TYPE_S8;
switch (dma_addr & 0x3) {
case 0:
if ((len % 4) == 0) {
data_type = OMAP_DMA_DATA_TYPE_S32;
frame = len / 4;
break;
}
case 2:
if ((len % 2) == 0) {
data_type = OMAP_DMA_DATA_TYPE_S16;
frame = len / 2;
break;
}
case 1:
case 3:
default:
data_type = OMAP_DMA_DATA_TYPE_S8;
frame = len;
break;
}
/* set transfer parameters */
omap_set_dma_transfer_params(musb_channel->sysdma_channel,
data_type,
len ? frame : 1, 1, /* One frame */
OMAP_DMA_SYNC_FRAME,
OMAP24XX_DMA_NO_DEVICE,
0); /* Src Sync */
if (!musb_channel->transmit) {
/* RX: set src = FIFO */
omap_set_dma_src_params(musb_channel->sysdma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
MUSB_FIFO_ADDRESS(musb->ctrl_phys_base,
musb_channel->epnum),
0, 0);
omap_set_dma_dest_params(musb_channel->sysdma_channel, 0,
OMAP_DMA_AMODE_POST_INC, dma_addr,
0, 0);
omap_set_dma_dest_data_pack(musb_channel->sysdma_channel, 1);
omap_set_dma_dest_burst_mode(musb_channel->sysdma_channel,
OMAP_DMA_DATA_BURST_16);
} else if (musb_channel->transmit) {
/* TX: set dst = FIFO */
omap_set_dma_src_params(musb_channel->sysdma_channel, 0,
OMAP_DMA_AMODE_POST_INC, dma_addr,
0, 0);
omap_set_dma_dest_params(musb_channel->sysdma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
MUSB_FIFO_ADDRESS(musb->ctrl_phys_base,
musb_channel->epnum),
0, 0);
omap_set_dma_dest_data_pack(musb_channel->sysdma_channel, 0);
omap_set_dma_dest_burst_mode(musb_channel->sysdma_channel,
OMAP_DMA_DATA_BURST_DIS);
}
/* start the system dma */
omap_start_dma(musb_channel->sysdma_channel);
}
static void OMAPLFBFliepNoLock_HDMI(OMAPLFB_SWAPCHAIN *psSwapChain,
OMAPLFB_DEVINFO *psDevInfo,
struct omapfb_info *ofbi,
struct fb_info *framebuffer,
unsigned long fb_offset)
{
struct omap_overlay *ovl_hdmi;
struct omap_overlay_info info;
struct omap_overlay *hdmi;
struct omap_overlay_manager *manager;
bool overlay_change_requested = false;
enum omap_dss_overlay_s3d_type s3d_type_in_video_hdmi = omap_dss_overlay_s3d_none;
ovl_hdmi = omap_dss_get_overlay(3);
if(ovl_hdmi->info.enabled)
s3d_type_in_video_hdmi = ovl_hdmi->info.s3d_type;
hdmi = psSwapChain->stHdmiTiler.overlay;
manager = hdmi->manager;
hdmi->get_overlay_info(hdmi, &info);
//not good...
if ( omap_overlay_info_req[hdmi->id].status==2 )
{
info.enabled = omap_overlay_info_req[hdmi->id].enabled;
info.rotation = omap_overlay_info_req[hdmi->id].rotation;
info.pos_x = omap_overlay_info_req[hdmi->id].pos_x;
info.pos_y = omap_overlay_info_req[hdmi->id].pos_y;
info.out_width = omap_overlay_info_req[hdmi->id].out_width;
info.out_height = omap_overlay_info_req[hdmi->id].out_height;
info.global_alpha = omap_overlay_info_req[hdmi->id].global_alpha;
info.zorder = omap_overlay_info_req[hdmi->id].zorder;
printk("GUI HDMI layer change requested. req_enabled(%d)\n", omap_overlay_info_req[hdmi->id].enabled);
omap_overlay_info_req[hdmi->id].status = 0;
overlay_change_requested = true;
}
if ( info.enabled )
{
mutex_lock(&psSwapChain->stHdmiTiler.lock);
if ( !psSwapChain->stHdmiTiler.alloc )
{
// if ( AllocTilerForHdmi(psSwapChain, psDevInfo) ) {
ERROR_PRINTK("Tiler memory for HDMI GUI cloning is not allocated\n");
mutex_unlock(&psSwapChain->stHdmiTiler.lock);
return;
// }
}
if ( psSwapChain->stHdmiTiler.alloc ) //if Tiler memory is allocated
{
unsigned long line_offset;
unsigned long w, h;
unsigned long src_stride, dst_stride;
unsigned long i;
unsigned char *dst, *src;
unsigned long pStride;
u32 j, *src_4, *dst_4, *dst1_4;
int ch;
src_stride = psDevInfo->sFBInfo.ulByteStride;
dst_stride = psSwapChain->stHdmiTiler.vStride;
line_offset = fb_offset / src_stride;
h = psDevInfo->sFBInfo.ulHeight;
w = psDevInfo->sFBInfo.ulWidth;
pStride = psSwapChain->stHdmiTiler.pStride;
//Copy
dst = (unsigned char*)psSwapChain->stHdmiTiler.vAddr +
(line_offset * dst_stride);
src = (unsigned char*)framebuffer->screen_base + fb_offset;
DEBUG_PRINTK("Copy Start h:%d, src:0x%p src_stride:%d, dst:0x%p dst_stride:%d, line offset:%d, pStride:%d\n",
h, src, src_stride, dst, dst_stride, line_offset, pStride);
if( psSwapChain->s3d_type==omap_dss_overlay_s3d_side_by_side && s3d_type_in_video_hdmi == omap_dss_overlay_s3d_top_bottom)
{
for(j=0; j<h/2; j++)
{
src_4 = (u32 *)(src + src_stride*j);
dst_4 = (u32 *)(dst + dst_stride*2*j);
dst1_4 = (u32 *)(dst + dst_stride*2*j + w*2);
for(i=0;i<w/2;i++)
{
*dst_4++ = *src_4;
*dst1_4++ = *src_4++;
src_4++;
}
src_4 = (u32 *)(src + src_stride*j);
dst_4 = (u32 *)(dst + dst_stride*(2*j+1));
dst1_4 = (u32 *)(dst + dst_stride*(2*j+1) + w*2);
for(i=0;i<w/2;i++) {
*dst_4++ = *src_4;
*dst1_4++ = *src_4++;
src_4++;
}
}
info.s3d_type = omap_dss_overlay_s3d_top_bottom;
}
else
{
if(hdmi_dma.state == HDMI_DMA_DONE)
{
ch = hdmi_dma.frame_pos;
hdmi->get_overlay_info(hdmi, &hdmi_dma.info[ch]);
hdmi_dma.hdmi = hdmi;
printk("S:%x\n", psSwapChain->stHdmiTiler.pAddr + (h * pStride * ch));
omap_set_dma_transfer_params(hdmi_dma.lch, OMAP_DMA_DATA_TYPE_S32,
src_stride>>2, h, 0, 0, 0);
omap_set_dma_src_params(hdmi_dma.lch, 0, OMAP_DMA_AMODE_POST_INC,
framebuffer->fix.smem_start + fb_offset, 1, 1);
omap_set_dma_dest_params(hdmi_dma.lch, 0, OMAP_DMA_AMODE_DOUBLE_IDX,
psSwapChain->stHdmiTiler.pAddr + (h * pStride * ch), 1, pStride - src_stride + 1 );
omap_dma_set_prio_lch(hdmi_dma.lch, DMA_CH_PRIO_HIGH, DMA_CH_PRIO_HIGH);
omap_set_dma_src_burst_mode(hdmi_dma.lch, OMAP_DMA_DATA_BURST_16);
omap_set_dma_dest_burst_mode(hdmi_dma.lch, OMAP_DMA_DATA_BURST_16);
omap_start_dma(hdmi_dma.lch);
hdmi_dma.state = HDMI_DMA_TRANSFERRING;
if ( omap_overlay_info_req[hdmi->id].status==2 )
{
hdmi_dma.info[ch].enabled = omap_overlay_info_req[hdmi->id].enabled;
hdmi_dma.info[ch].rotation = omap_overlay_info_req[hdmi->id].rotation;
hdmi_dma.info[ch].pos_x = omap_overlay_info_req[hdmi->id].pos_x;
hdmi_dma.info[ch].pos_y = omap_overlay_info_req[hdmi->id].pos_y;
hdmi_dma.info[ch].out_width = omap_overlay_info_req[hdmi->id].out_width;
hdmi_dma.info[ch].out_height = omap_overlay_info_req[hdmi->id].out_height;
hdmi_dma.info[ch].global_alpha = omap_overlay_info_req[hdmi->id].global_alpha;
hdmi_dma.info[ch].zorder = omap_overlay_info_req[hdmi->id].zorder;
}
//fill info
//@todo not good find another way later
hdmi_dma.info[ch].color_mode = ofbi->overlays[0]->info.color_mode;
hdmi_dma.info[ch].paddr = psSwapChain->stHdmiTiler.pAddr + (h * pStride * ch);
hdmi_dma.info[ch].vaddr = NULL; //no need
if ( hdmi_dma.info[ch].rotation==OMAP_DSS_ROT_90 || hdmi_dma.info[ch].rotation==OMAP_DSS_ROT_270 )
{
hdmi_dma.info[ch].width = h;
hdmi_dma.info[ch].height = w;
hdmi_dma.info[ch].screen_width = h;
}
else
{
hdmi_dma.info[ch].width =w;
hdmi_dma.info[ch].height = h;
hdmi_dma.info[ch].screen_width = w;
}
hdmi_dma.info[ch].rotation_type = OMAP_DSS_ROT_TILER;
hdmi_dma.info[ch].s3d_type = psSwapChain->s3d_type;
hdmi_dma.curr_frame = hdmi_dma.frame_pos;
if( ++hdmi_dma.frame_pos >= HDMI_DMA_MAX ) hdmi_dma.frame_pos = 0;
if( omap_overlay_info_req[hdmi->id].status == 2) {
omap_overlay_info_req[hdmi->id].status = 0;
}
}
else printk("DOLCOM : DMA busy!!!!!!!!!!!!!!!!!\n");
static void makeinterlave(struct fb_info *fbi, struct omapfb_info *ofbi, struct omap_overlay *overlay, struct omap_overlay_info *pInfo)
{
struct InterleaveBuffer* IB;
struct omap_overlay_info overlay_info = *pInfo;
IB = findInterleaveBuffer(fbi, &overlay_info);
if ( IB!=NULL )
{
#ifdef CONFIG_GFX_DMA_COPY
//LGE_CHANGE_S [[email protected]] 2010-12-27, P920 : For GFX dma copy.
if (wait_for_completion_timeout(&gfx_dma[0].compl, msecs_to_jiffies(1000)) == 0) {
omap_stop_dma(gfx_dma[0].lch);
DEBUG_PRINTK("GFX DMA: dma timeout while transferring\n");
}
omap_set_dma_transfer_params(gfx_dma[0].lch, OMAP_DMA_DATA_TYPE_S32,
(fbi->fix.line_length>>2), (fbi->var.yres)>>1, 0, 0, 0);
omap_set_dma_src_params(gfx_dma[0].lch, 0, OMAP_DMA_AMODE_POST_INC,
overlay_info.paddr, 1, 1);
omap_set_dma_dest_params(gfx_dma[0].lch, 0, OMAP_DMA_AMODE_DOUBLE_IDX,
IB->paddr + fbi->fix.line_length, 1, (fbi->fix.line_length) + 1);
omap_start_dma(gfx_dma[0].lch);
#if 0
if (wait_for_completion_timeout(&gfx_dma[0].compl, msecs_to_jiffies(1000)) == 0) {
omap_stop_dma(gfx_dma[0].lch);
DEBUG_PRINTK("GFX DMA: dma timeout while transferring\n");
}
if (wait_for_completion_timeout(&gfx_dma[1].compl, msecs_to_jiffies(1000)) == 0) {
omap_stop_dma(gfx_dma[1].lch);
DEBUG_PRINTK("GFX DMA: dma timeout while transferring\n");
}
omap_set_dma_transfer_params(gfx_dma[0].lch, OMAP_DMA_DATA_TYPE_S32,
(fbi->fix.line_length>>2), (fbi->var.yres)>>1, 0, 0, 0);
omap_set_dma_src_params(gfx_dma[0].lch, 0, OMAP_DMA_AMODE_POST_INC,
overlay_info.paddr, 1, 1);
omap_set_dma_dest_params(gfx_dma[0].lch, 0, OMAP_DMA_AMODE_DOUBLE_IDX,
IB->paddr + fbi->fix.line_length, 1, (fbi->fix.line_length) + 1);
omap_set_dma_transfer_params(gfx_dma[1].lch, OMAP_DMA_DATA_TYPE_S32,
(fbi->fix.line_length>>2), (fbi->var.yres)>>1, 0, 0, 0);
omap_set_dma_src_params(gfx_dma[1].lch, 0, OMAP_DMA_AMODE_POST_INC,
overlay_info.paddr + (fbi->fix.line_length * (fbi->var.yres>>1)), 1, 1);
omap_set_dma_dest_params(gfx_dma[1].lch, 0, OMAP_DMA_AMODE_DOUBLE_IDX,
IB->paddr, 1, (fbi->fix.line_length) + 1);
omap_start_dma(gfx_dma[0].lch);
omap_start_dma(gfx_dma[1].lch);
#endif
//LGE_CHANGE_E [[email protected]]
#else
// memcpy(IB->buffer, overlay_info.vaddr, IB->size);
{
//copy interleave
int stride;
int height;
unsigned char *src, *dst;
int i;
stride = fbi->fix.line_length;
height = fbi->var.yres;
src = overlay_info.vaddr;
dst = IB->buffer;
// printk("Interleave Copy line %d address:%p\n", height, IB->buffer);
// printk("overlay->roation_type : %d\n", overlay_info.rotation_type);
for(i=0;i<height;i++)
{
if ( i < (height/2) )
{
//left frame copy to odd line
unsigned char *odd_line;
odd_line = dst + stride * (i*2 + 1);
memcpy(odd_line, src, stride);
}
else
{
//right frame copy to even line
unsigned char *even_line;
even_line = dst + stride * ( (i-height/2) * 2 + 1 -1 );
memcpy(even_line, src, stride);
}
src += stride;
}
}
#endif
// flush_cache_all();
overlay_info.paddr = IB->paddr;
overlay_info.vaddr = IB->buffer;
// printk("S3D : set oerlay paddr:0x%x vaddr 0x%x",
// overlay_info.paddr,
// overlay_info.vaddr );
// if ( cacheflush(IB->buffer, IB->size, DCACHE ) )
// printk("Interleave buffer flush failed\n");
// overlay->set_overlay_info(overlay, &overlay_info);
// return;
}
overlay_info.s3d_type = omap_dss_overlay_s3d_interlaced;
overlay->set_overlay_info(overlay, &overlay_info);
}
static void configure_channel(struct dma_channel *channel,
u16 packet_sz, u8 mode,
dma_addr_t dma_addr, u32 len)
{
struct musb_dma_channel *musb_channel = channel->private_data;
struct musb_dma_controller *controller = musb_channel->controller;
void __iomem *mbase = controller->base;
u8 bchannel = musb_channel->idx;
u16 csr = 0;
DBG(4, "%p, pkt_sz %d, addr 0x%x, len %d, mode %d\n",
channel, packet_sz, dma_addr, len, mode);
if (musb_channel->sysdma_channel != -1) {
/* System DMA */
/* RX: set src = FIFO */
omap_set_dma_transfer_params(musb_channel->sysdma_channel,
OMAP_DMA_DATA_TYPE_S8,
len ? len : 1, 1, /* One frame */
OMAP_DMA_SYNC_ELEMENT,
OMAP24XX_DMA_NO_DEVICE,
0); /* Src Sync */
omap_set_dma_src_params(musb_channel->sysdma_channel, 0,
OMAP_DMA_AMODE_CONSTANT,
MUSB_FIFO_ADDRESS(musb_channel->epnum),
0, 0);
omap_set_dma_dest_params(musb_channel->sysdma_channel, 0,
OMAP_DMA_AMODE_POST_INC, dma_addr,
0, 0);
omap_set_dma_dest_data_pack(musb_channel->sysdma_channel, 1);
omap_set_dma_dest_burst_mode(musb_channel->sysdma_channel,
OMAP_DMA_DATA_BURST_16);
omap_start_dma(musb_channel->sysdma_channel);
} else { /* Mentor DMA */
if (mode) {
csr |= 1 << MUSB_HSDMA_MODE1_SHIFT;
BUG_ON(len < packet_sz);
if (packet_sz >= 64) {
csr |= MUSB_HSDMA_BURSTMODE_INCR16
<< MUSB_HSDMA_BURSTMODE_SHIFT;
} else if (packet_sz >= 32) {
csr |= MUSB_HSDMA_BURSTMODE_INCR8
<< MUSB_HSDMA_BURSTMODE_SHIFT;
} else if (packet_sz >= 16) {
csr |= MUSB_HSDMA_BURSTMODE_INCR4
<< MUSB_HSDMA_BURSTMODE_SHIFT;
}
}
csr |= (musb_channel->epnum << MUSB_HSDMA_ENDPOINT_SHIFT)
| (1 << MUSB_HSDMA_ENABLE_SHIFT)
| (1 << MUSB_HSDMA_IRQENABLE_SHIFT)
| (musb_channel->transmit
? (1 << MUSB_HSDMA_TRANSMIT_SHIFT)
: 0);
/* address/count */
musb_write_hsdma_addr(mbase, bchannel, dma_addr);
musb_write_hsdma_count(mbase, bchannel, len);
/* control (this should start things) */
musb_writew(mbase,
MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_CONTROL),
csr);
}
}
static int __init omap1_cam_probe(struct platform_device *pdev)
{
struct omap1_cam_dev *pcdev;
struct resource *res;
struct clk *clk;
void __iomem *base;
unsigned int irq;
int err = 0;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
if (!res || (int)irq <= 0) {
err = -ENODEV;
goto exit;
}
clk = clk_get(&pdev->dev, "armper_ck");
if (IS_ERR(clk)) {
err = PTR_ERR(clk);
goto exit;
}
pcdev = kzalloc(sizeof(*pcdev) + resource_size(res), GFP_KERNEL);
if (!pcdev) {
dev_err(&pdev->dev, "Could not allocate pcdev\n");
err = -ENOMEM;
goto exit_put_clk;
}
pcdev->res = res;
pcdev->clk = clk;
pcdev->pdata = pdev->dev.platform_data;
pcdev->pflags = pcdev->pdata->flags;
if (pcdev->pdata)
pcdev->camexclk = pcdev->pdata->camexclk_khz * 1000;
switch (pcdev->camexclk) {
case 6000000:
case 8000000:
case 9600000:
case 12000000:
case 24000000:
break;
default:
dev_warn(&pdev->dev,
"Incorrect sensor clock frequency %ld kHz, "
"should be one of 0, 6, 8, 9.6, 12 or 24 MHz, "
"please correct your platform data\n",
pcdev->pdata->camexclk_khz);
pcdev->camexclk = 0;
case 0:
dev_info(&pdev->dev,
"Not providing sensor clock\n");
}
INIT_LIST_HEAD(&pcdev->capture);
spin_lock_init(&pcdev->lock);
/*
* Request the region.
*/
if (!request_mem_region(res->start, resource_size(res), DRIVER_NAME)) {
err = -EBUSY;
goto exit_kfree;
}
base = ioremap(res->start, resource_size(res));
if (!base) {
err = -ENOMEM;
goto exit_release;
}
pcdev->irq = irq;
pcdev->base = base;
sensor_reset(pcdev, true);
err = omap_request_dma(OMAP_DMA_CAMERA_IF_RX, DRIVER_NAME,
dma_isr, (void *)pcdev, &pcdev->dma_ch);
if (err < 0) {
dev_err(&pdev->dev, "Can't request DMA for OMAP1 Camera\n");
err = -EBUSY;
goto exit_iounmap;
}
dev_dbg(&pdev->dev, "got DMA channel %d\n", pcdev->dma_ch);
/* preconfigure DMA */
omap_set_dma_src_params(pcdev->dma_ch, OMAP_DMA_PORT_TIPB,
OMAP_DMA_AMODE_CONSTANT, res->start + REG_CAMDATA,
0, 0);
omap_set_dma_dest_burst_mode(pcdev->dma_ch, OMAP_DMA_DATA_BURST_4);
/* setup DMA autoinitialization */
omap_dma_link_lch(pcdev->dma_ch, pcdev->dma_ch);
err = request_irq(pcdev->irq, cam_isr, 0, DRIVER_NAME, pcdev);
if (err) {
dev_err(&pdev->dev, "Camera interrupt register failed\n");
goto exit_free_dma;
}
pcdev->soc_host.drv_name = DRIVER_NAME;
pcdev->soc_host.ops = &omap1_host_ops;
pcdev->soc_host.priv = pcdev;
pcdev->soc_host.v4l2_dev.dev = &pdev->dev;
pcdev->soc_host.nr = pdev->id;
err = soc_camera_host_register(&pcdev->soc_host);
if (err)
goto exit_free_irq;
dev_info(&pdev->dev, "OMAP1 Camera Interface driver loaded\n");
return 0;
exit_free_irq:
free_irq(pcdev->irq, pcdev);
exit_free_dma:
omap_free_dma(pcdev->dma_ch);
exit_iounmap:
iounmap(base);
exit_release:
release_mem_region(res->start, resource_size(res));
exit_kfree:
kfree(pcdev);
exit_put_clk:
clk_put(clk);
exit:
return err;
}
static void omap_nand_dma_transfer(struct mtd_info *mtd, void *addr,
unsigned int u32_count, int is_write)
{
const int block_size = 16;
unsigned int block_count, len;
int dma_ch;
unsigned long fifo_reg, timeout, jiffies_before, jiffies_spent;
static unsigned long max_jiffies = 0;
dma_ch = omap_nand_dma_ch;
block_count = u32_count * 4 / block_size;
nand_write_reg(NND_STATUS, 0x0f);
nand_write_reg(NND_FIFOCTRL, (block_size << 24) | block_count);
fifo_reg = NAND_BASE + NND_FIFO;
if (is_write) {
omap_set_dma_dest_params(dma_ch, OMAP_DMA_PORT_TIPB,
OMAP_DMA_AMODE_CONSTANT, fifo_reg,
0, 0);
omap_set_dma_src_params(dma_ch, OMAP_DMA_PORT_EMIFF,
OMAP_DMA_AMODE_POST_INC,
virt_to_phys(addr),
0, 0);
// omap_set_dma_src_burst_mode(dma_ch, OMAP_DMA_DATA_BURST_4);
/* Set POSTWRITE bit */
nand_write_reg(NND_CTRL, nand_read_reg(NND_CTRL) | (1 << 16));
} else {
omap_set_dma_src_params(dma_ch, OMAP_DMA_PORT_TIPB,
OMAP_DMA_AMODE_CONSTANT, fifo_reg,
0, 0);
omap_set_dma_dest_params(dma_ch, OMAP_DMA_PORT_EMIFF,
OMAP_DMA_AMODE_POST_INC,
virt_to_phys(addr),
0, 0);
// omap_set_dma_dest_burst_mode(dma_ch, OMAP_DMA_DATA_BURST_8);
/* Set PREFETCH bit */
nand_write_reg(NND_CTRL, nand_read_reg(NND_CTRL) | (1 << 17));
}
omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S32, block_size / 4,
block_count, OMAP_DMA_SYNC_FRAME,
0, 0);
init_completion(&omap_nand_dma_comp);
len = u32_count << 2;
dma_cache_maint(addr, len, DMA_TO_DEVICE);
omap_start_dma(dma_ch);
jiffies_before = jiffies;
timeout = wait_for_completion_timeout(&omap_nand_dma_comp,
msecs_to_jiffies(1000));
jiffies_spent = (unsigned long)((long)jiffies - (long)jiffies_before);
if (jiffies_spent > max_jiffies)
max_jiffies = jiffies_spent;
if (timeout == 0) {
printk(KERN_WARNING "omap-hw-nand: DMA timeout after %u ms, max. seen latency %u ms\n",
jiffies_to_msecs(jiffies_spent),
jiffies_to_msecs(max_jiffies));
}
if (!is_write)
dma_cache_maint(addr, len, DMA_FROM_DEVICE);
nand_write_reg(NND_CTRL, nand_read_reg(NND_CTRL) & ~((1 << 16) | (1 << 17)));
}
static int omap3_onenand_write_bufferram(struct mtd_info *mtd, int area,
const unsigned char *buffer,
int offset, size_t count)
{
struct omap2_onenand *c = container_of(mtd, struct omap2_onenand, mtd);
struct onenand_chip *this = mtd->priv;
dma_addr_t dma_src, dma_dst;
int bram_offset;
unsigned long timeout;
void *buf = (void *)buffer;
volatile unsigned *done;
bram_offset = omap2_onenand_bufferram_offset(mtd, area) + area + offset;
if (bram_offset & 3 || (size_t)buf & 3 || count < 384)
goto out_copy;
/* panic_write() may be in an interrupt context */
if (in_interrupt() || oops_in_progress)
goto out_copy;
if (buf >= high_memory) {
struct page *p1;
if (((size_t)buf & PAGE_MASK) !=
((size_t)(buf + count - 1) & PAGE_MASK))
goto out_copy;
p1 = vmalloc_to_page(buf);
if (!p1)
goto out_copy;
buf = page_address(p1) + ((size_t)buf & ~PAGE_MASK);
}
dma_src = dma_map_single(&c->pdev->dev, buf, count, DMA_TO_DEVICE);
dma_dst = c->phys_base + bram_offset;
if (dma_mapping_error(&c->pdev->dev, dma_src)) {
dev_err(&c->pdev->dev,
"Couldn't DMA map a %d byte buffer\n",
count);
return -1;
}
omap_set_dma_transfer_params(c->dma_channel, OMAP_DMA_DATA_TYPE_S32,
count >> 2, 1, 0, 0, 0);
omap_set_dma_src_params(c->dma_channel, 0, OMAP_DMA_AMODE_POST_INC,
dma_src, 0, 0);
omap_set_dma_dest_params(c->dma_channel, 0, OMAP_DMA_AMODE_POST_INC,
dma_dst, 0, 0);
INIT_COMPLETION(c->dma_done);
omap_start_dma(c->dma_channel);
timeout = jiffies + msecs_to_jiffies(20);
done = &c->dma_done.done;
while (time_before(jiffies, timeout))
if (*done)
break;
dma_unmap_single(&c->pdev->dev, dma_src, count, DMA_TO_DEVICE);
if (!*done) {
dev_err(&c->pdev->dev, "timeout waiting for DMA\n");
goto out_copy;
}
return 0;
out_copy:
memcpy(this->base + bram_offset, buf, count);
return 0;
}