diff options
| author | Michael Hennerich <michael.hennerich@analog.com> | 2007-12-04 23:45:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-12-05 09:21:19 -0800 |
| commit | cc2f81a695640dd1c0cf12b35ee303460fa6d0bc (patch) | |
| tree | 650339ac7d5e5029348b8156157a5da609d2a397 | |
| parent | 131b17d42de6194fa960132c1f62c29923c4f20c (diff) | |
| download | talos-op-linux-cc2f81a695640dd1c0cf12b35ee303460fa6d0bc.tar.gz talos-op-linux-cc2f81a695640dd1c0cf12b35ee303460fa6d0bc.zip | |
spi: bfin spi uses portmux calls
Use new Blackfin portmux interface, add error handling.
Signed-off-by: Michael Hennerich <michael.hennerich@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>
| -rw-r--r-- | drivers/spi/spi_bfin5xx.c | 28 | ||||
| -rw-r--r-- | include/asm-blackfin/mach-bf533/portmux.h | 2 |
2 files changed, 23 insertions, 7 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index 805f03bb5ef9..759a6fc9b4d4 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -1167,6 +1167,21 @@ static inline int destroy_queue(struct driver_data *drv_data) return 0; } +static int setup_pin_mux(int action) +{ + + u16 pin_req[] = {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0}; + + if (action) { + if (peripheral_request_list(pin_req, DRV_NAME)) + return -EFAULT; + } else { + peripheral_free_list(pin_req); + } + + return 0; +} + static int __init bfin5xx_spi_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -1184,12 +1199,9 @@ static int __init bfin5xx_spi_probe(struct platform_device *pdev) return -ENOMEM; } - if (peripheral_request(P_SPI0_SCK, DRV_NAME) || - peripheral_request(P_SPI0_MISO, DRV_NAME) || - peripheral_request(P_SPI0_MOSI, DRV_NAME)) { - + if (setup_pin_mux(1)) { dev_err(&pdev->dev, ": Requesting Peripherals failed\n"); - goto out_error_queue_alloc; + goto out_error; } drv_data = spi_master_get_devdata(master); @@ -1225,9 +1237,11 @@ static int __init bfin5xx_spi_probe(struct platform_device *pdev) dev_dbg(&pdev->dev, "controller probe successfully\n"); return status; - out_error_queue_alloc: +out_error_queue_alloc: destroy_queue(drv_data); +out_error: spi_master_put(master); + return status; } @@ -1257,6 +1271,8 @@ static int __devexit bfin5xx_spi_remove(struct platform_device *pdev) /* Disconnect from the SPI framework */ spi_unregister_master(drv_data->master); + setup_pin_mux(0); + /* Prevent double remove */ platform_set_drvdata(pdev, NULL); diff --git a/include/asm-blackfin/mach-bf533/portmux.h b/include/asm-blackfin/mach-bf533/portmux.h index b88d7a03ee3e..137f4884acfe 100644 --- a/include/asm-blackfin/mach-bf533/portmux.h +++ b/include/asm-blackfin/mach-bf533/portmux.h @@ -42,7 +42,7 @@ #define P_SPORT0_DRPRI (P_DONTCARE) #define P_SPI0_MOSI (P_DONTCARE) -#define P_SPI0_MIS0 (P_DONTCARE) +#define P_SPI0_MISO (P_DONTCARE) #define P_SPI0_SCK (P_DONTCARE) #define P_SPI0_SSEL7 (P_DEFINED | P_IDENT(GPIO_PF7)) #define P_SPI0_SSEL6 (P_DEFINED | P_IDENT(GPIO_PF6)) |
