unsigned int left_tx_cnt;
unsigned int left_rx_cnt;
- /* tasklet to push tx msg into FIFO */
- struct tasklet_struct tasklet_tx;
-
int chipselect[0];
};
sspi->left_tx_cnt--;
}
-static void spi_sirfsoc_tasklet_tx(unsigned long arg)
-{
- struct sirfsoc_spi *sspi = (struct sirfsoc_spi *)arg;
-
- /* Fill Tx FIFO while there are left words to be transmitted */
- while (!((readl(sspi->base + SIRFSOC_SPI_TXFIFO_STATUS) &
- SIRFSOC_SPI_FIFO_FULL)) &&
- sspi->left_tx_cnt)
- sspi->tx_word(sspi);
-}
-
static irqreturn_t spi_sirfsoc_irq(int irq, void *dev_id)
{
struct sirfsoc_spi *sspi = dev_id;
writel(0x0, sspi->base + SIRFSOC_SPI_INT_EN);
}
- if (spi_stat & SIRFSOC_SPI_FRM_END) {
+ if (spi_stat & (SIRFSOC_SPI_FRM_END
+ | SIRFSOC_SPI_RXFIFO_THD_REACH))
while (!((readl(sspi->base + SIRFSOC_SPI_RXFIFO_STATUS)
& SIRFSOC_SPI_FIFO_EMPTY)) &&
sspi->left_rx_cnt)
sspi->rx_word(sspi);
- /* Received all words */
- if ((sspi->left_rx_cnt == 0) && (sspi->left_tx_cnt == 0)) {
- complete(&sspi->done);
- writel(0x0, sspi->base + SIRFSOC_SPI_INT_EN);
- }
- }
-
- if (spi_stat & SIRFSOC_SPI_RXFIFO_THD_REACH ||
- spi_stat & SIRFSOC_SPI_TXFIFO_THD_REACH ||
- spi_stat & SIRFSOC_SPI_RX_FIFO_FULL ||
- spi_stat & SIRFSOC_SPI_TXFIFO_EMPTY)
- tasklet_schedule(&sspi->tasklet_tx);
+ if (spi_stat & (SIRFSOC_SPI_FIFO_EMPTY
+ | SIRFSOC_SPI_TXFIFO_THD_REACH))
+ while (!((readl(sspi->base + SIRFSOC_SPI_TXFIFO_STATUS)
+ & SIRFSOC_SPI_FIFO_FULL)) &&
+ sspi->left_tx_cnt)
+ sspi->tx_word(sspi);
+ /* Received all words */
+ if ((sspi->left_rx_cnt == 0) && (sspi->left_tx_cnt == 0)) {
+ complete(&sspi->done);
+ writel(0x0, sspi->base + SIRFSOC_SPI_INT_EN);
+ }
return IRQ_HANDLED;
}
init_completion(&sspi->done);
- tasklet_init(&sspi->tasklet_tx, spi_sirfsoc_tasklet_tx,
- (unsigned long)sspi);
-
writel(SIRFSOC_SPI_FIFO_RESET, sspi->base + SIRFSOC_SPI_RXFIFO_OP);
writel(SIRFSOC_SPI_FIFO_RESET, sspi->base + SIRFSOC_SPI_TXFIFO_OP);
writel(SIRFSOC_SPI_FIFO_START, sspi->base + SIRFSOC_SPI_RXFIFO_OP);