diff options
| author | Olof Johansson <olof@lixom.net> | 2012-09-12 22:34:11 -0700 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2012-09-12 22:34:11 -0700 |
| commit | 025c95a6826ad8acfe871f33c2fa9208beeb38df (patch) | |
| tree | 220fe156ff60db13bd3a1319f5e20d6b723de5f4 /drivers/spi/spi-bcm63xx.c | |
| parent | 0558d7a8ed44e6e53aadb04d2e23145efb2aa8a4 (diff) | |
| parent | 7f744b17140af1a9c8804a1c81c9dae6bb52a7fb (diff) | |
Merge branch 'clk' of git://github.com/hzhuang1/linux into next/cleanup
* 'clk' of git://github.com/hzhuang1/linux:
ARM: mmp: remove unused definition in APBC and APMU
ARM: mmp: move mmp2 clock definition to separated file
arm: mmp: move pxa910 clock definition to separated file
arm: mmp: move pxa168 clock definition to separated file
arm: mmp: make private clock definition exclude from common clock
+ Linux 3.6-rc4
Diffstat (limited to 'drivers/spi/spi-bcm63xx.c')
| -rw-r--r-- | drivers/spi/spi-bcm63xx.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index ea0aaa3f13d0..a9f4049c6769 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -47,6 +47,8 @@ struct bcm63xx_spi { /* Platform data */ u32 speed_hz; unsigned fifo_size; + unsigned int msg_type_shift; + unsigned int msg_ctl_width; /* Data buffers */ const unsigned char *tx_ptr; @@ -221,13 +223,20 @@ static unsigned int bcm63xx_txrx_bufs(struct spi_device *spi, msg_ctl = (t->len << SPI_BYTE_CNT_SHIFT); if (t->rx_buf && t->tx_buf) - msg_ctl |= (SPI_FD_RW << SPI_MSG_TYPE_SHIFT); + msg_ctl |= (SPI_FD_RW << bs->msg_type_shift); else if (t->rx_buf) - msg_ctl |= (SPI_HD_R << SPI_MSG_TYPE_SHIFT); + msg_ctl |= (SPI_HD_R << bs->msg_type_shift); else if (t->tx_buf) - msg_ctl |= (SPI_HD_W << SPI_MSG_TYPE_SHIFT); - - bcm_spi_writew(bs, msg_ctl, SPI_MSG_CTL); + msg_ctl |= (SPI_HD_W << bs->msg_type_shift); + + switch (bs->msg_ctl_width) { + case 8: + bcm_spi_writeb(bs, msg_ctl, SPI_MSG_CTL); + break; + case 16: + bcm_spi_writew(bs, msg_ctl, SPI_MSG_CTL); + break; + } /* Issue the transfer */ cmd = SPI_CMD_START_IMMEDIATE; @@ -406,9 +415,21 @@ static int __devinit bcm63xx_spi_probe(struct platform_device *pdev) master->transfer_one_message = bcm63xx_spi_transfer_one; master->mode_bits = MODEBITS; bs->speed_hz = pdata->speed_hz; + bs->msg_type_shift = pdata->msg_type_shift; + bs->msg_ctl_width = pdata->msg_ctl_width; bs->tx_io = (u8 *)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA)); bs->rx_io = (const u8 *)(bs->regs + bcm63xx_spireg(SPI_RX_DATA)); + switch (bs->msg_ctl_width) { + case 8: + case 16: + break; + default: + dev_err(dev, "unsupported MSG_CTL width: %d\n", + bs->msg_ctl_width); + goto out_clk_disable; + } + /* Initialize hardware */ clk_enable(bs->clk); bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS); |