diff options
| author |   Sonic Zhang <sonic.zhang@analog.com> | 2007-12-04 23:45:16 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-12-05 09:21:19 -0800 |
| commit | 12e17c4267a5b2a5ba77bd53a62388be641534b8 (patch) | |
| tree | 4c45477c323808523b071b25f4e8446ccec13f41 /drivers | |
| parent | spi: spi_bfin uses portmux for additional busses (diff) | |
| download | linux-dev-12e17c4267a5b2a5ba77bd53a62388be641534b8.tar.xz linux-dev-12e17c4267a5b2a5ba77bd53a62388be641534b8.zip | |
spi: spi_bfin, rearrange portmux calls
Move pin muxing to setup and cleanup methods.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi_bfin5xx.c | 53 |
1 files changed, 28 insertions, 25 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index 045d3ecf459d..4496ed158e6b 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -136,7 +136,6 @@ struct chip_data { u16 flag; u8 chip_select_num; - u8 chip_select_requested; u8 n_bytes; u8 width; /* 0 or 1 */ u8 enable_dma; @@ -216,19 +215,7 @@ static int restore_state(struct driver_data *drv_data) { struct chip_data *chip = drv_data->cur_chip; int ret = 0; - u16 ssel[3][MAX_SPI_SSEL] = { - {P_SPI0_SSEL1, P_SPI0_SSEL2, P_SPI0_SSEL3, - P_SPI0_SSEL4, P_SPI0_SSEL5, - P_SPI0_SSEL6, P_SPI0_SSEL7}, - - {P_SPI1_SSEL1, P_SPI1_SSEL2, P_SPI1_SSEL3, - P_SPI1_SSEL4, P_SPI1_SSEL5, - P_SPI1_SSEL6, P_SPI1_SSEL7}, - - {P_SPI2_SSEL1, P_SPI2_SSEL2, P_SPI2_SSEL3, - P_SPI2_SSEL4, P_SPI2_SSEL5, - P_SPI2_SSEL6, P_SPI2_SSEL7}, - }; + /* Clear status and disable clock */ write_STAT(BIT_STAT_CLR); bfin_spi_disable(drv_data); @@ -239,17 +226,6 @@ static int restore_state(struct driver_data *drv_data) write_BAUD(chip->baud); cs_active(chip); - if (!chip->chip_select_requested) { - int i = chip->chip_select_num; - - dev_dbg(&drv_data->pdev->dev, "chip select number is %d\n", i); - if ((i > 0) && (i <= MAX_SPI_SSEL)) - ret = peripheral_request( - ssel[drv_data->master->bus_num][i-1], DRV_NAME); - - chip->chip_select_requested = 1; - } - if (ret) dev_dbg(&drv_data->pdev->dev, ": request chip select number %d failed\n", @@ -983,6 +959,22 @@ static int transfer(struct spi_device *spi, struct spi_message *msg) return 0; } +#define MAX_SPI_SSEL 7 + +static u16 ssel[3][MAX_SPI_SSEL] = { + {P_SPI0_SSEL1, P_SPI0_SSEL2, P_SPI0_SSEL3, + P_SPI0_SSEL4, P_SPI0_SSEL5, + P_SPI0_SSEL6, P_SPI0_SSEL7}, + + {P_SPI1_SSEL1, P_SPI1_SSEL2, P_SPI1_SSEL3, + P_SPI1_SSEL4, P_SPI1_SSEL5, + P_SPI1_SSEL6, P_SPI1_SSEL7}, + + {P_SPI2_SSEL1, P_SPI2_SSEL2, P_SPI2_SSEL3, + P_SPI2_SSEL4, P_SPI2_SSEL5, + P_SPI2_SSEL6, P_SPI2_SSEL7}, +}; + /* first setup for new devices */ static int setup(struct spi_device *spi) { @@ -1113,6 +1105,12 @@ static int setup(struct spi_device *spi) spi_set_ctldata(spi, chip); + dev_dbg(&spi->dev, "chip select number is %d\n", chip->chip_select_num); + if ((chip->chip_select_num > 0) + && (chip->chip_select_num <= spi->master->num_chipselect)) + peripheral_request(ssel[spi->master->bus_num] + [chip->chip_select_num-1], DRV_NAME); + return 0; } @@ -1124,6 +1122,11 @@ static void cleanup(struct spi_device *spi) { struct chip_data *chip = spi_get_ctldata(spi); + if ((chip->chip_select_num > 0) + && (chip->chip_select_num <= spi->master->num_chipselect)) + peripheral_free(ssel[spi->master->bus_num] + [chip->chip_select_num-1]); + kfree(chip); } |