diff options
author | Eric Miao <eric.y.miao@gmail.com> | 2010-03-16 04:48:01 -0400 |
---|---|---|
committer | Eric Miao <eric.y.miao@gmail.com> | 2010-05-11 11:24:57 -0400 |
commit | c9840daa70fbb8f6031fcd1f254a3da49a41ea7b (patch) | |
tree | df95f94209b05cca7250b45cc694f15be51e5c50 /drivers/spi | |
parent | 793ffb9ed3179906760874689a99d4863d76914e (diff) |
[ARM] pxa: correct SSCR0_SCR to support multiple SoCs
The previous definitions of SSCR0_SCR and SSCR0_SerClkDiv() prevented
them being used simultaneously when supporting multiple PXA SoCs, esp.
in drivers/spi/pxa2xx_spi.c, make them correct.
The change from SSCR0_SerClkDiv(2) to SSCR0_SCR(2), will make the result
a little bit different in pxa2xx_spi_probe(), however, since that's only
used as a default initialization value, it's acceptable.
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'drivers/spi')
-rw-r--r-- | drivers/spi/pxa2xx_spi.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/spi/pxa2xx_spi.c b/drivers/spi/pxa2xx_spi.c index 36828358a4d8..35d4e5cdb631 100644 --- a/drivers/spi/pxa2xx_spi.c +++ b/drivers/spi/pxa2xx_spi.c | |||
@@ -1318,14 +1318,14 @@ static int setup(struct spi_device *spi) | |||
1318 | /* NOTE: PXA25x_SSP _could_ use external clocking ... */ | 1318 | /* NOTE: PXA25x_SSP _could_ use external clocking ... */ |
1319 | if (drv_data->ssp_type != PXA25x_SSP) | 1319 | if (drv_data->ssp_type != PXA25x_SSP) |
1320 | dev_dbg(&spi->dev, "%ld Hz actual, %s\n", | 1320 | dev_dbg(&spi->dev, "%ld Hz actual, %s\n", |
1321 | clk_get_rate(ssp->clk) | 1321 | clk_get_rate(ssp->clk) |
1322 | / (1 + ((chip->cr0 & SSCR0_SCR) >> 8)), | 1322 | / (1 + ((chip->cr0 & SSCR0_SCR(0xfff)) >> 8)), |
1323 | chip->enable_dma ? "DMA" : "PIO"); | 1323 | chip->enable_dma ? "DMA" : "PIO"); |
1324 | else | 1324 | else |
1325 | dev_dbg(&spi->dev, "%ld Hz actual, %s\n", | 1325 | dev_dbg(&spi->dev, "%ld Hz actual, %s\n", |
1326 | clk_get_rate(ssp->clk) / 2 | 1326 | clk_get_rate(ssp->clk) / 2 |
1327 | / (1 + ((chip->cr0 & SSCR0_SCR) >> 8)), | 1327 | / (1 + ((chip->cr0 & SSCR0_SCR(0x0ff)) >> 8)), |
1328 | chip->enable_dma ? "DMA" : "PIO"); | 1328 | chip->enable_dma ? "DMA" : "PIO"); |
1329 | 1329 | ||
1330 | if (spi->bits_per_word <= 8) { | 1330 | if (spi->bits_per_word <= 8) { |
1331 | chip->n_bytes = 1; | 1331 | chip->n_bytes = 1; |
@@ -1558,7 +1558,7 @@ static int __init pxa2xx_spi_probe(struct platform_device *pdev) | |||
1558 | write_SSCR1(SSCR1_RxTresh(RX_THRESH_DFLT) | | 1558 | write_SSCR1(SSCR1_RxTresh(RX_THRESH_DFLT) | |
1559 | SSCR1_TxTresh(TX_THRESH_DFLT), | 1559 | SSCR1_TxTresh(TX_THRESH_DFLT), |
1560 | drv_data->ioaddr); | 1560 | drv_data->ioaddr); |
1561 | write_SSCR0(SSCR0_SerClkDiv(2) | 1561 | write_SSCR0(SSCR0_SCR(2) |
1562 | | SSCR0_Motorola | 1562 | | SSCR0_Motorola |
1563 | | SSCR0_DataSize(8), | 1563 | | SSCR0_DataSize(8), |
1564 | drv_data->ioaddr); | 1564 | drv_data->ioaddr); |