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| author | Stefano Babic <sbabic@denx.de> | 2010-07-06 17:05:06 +0200 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2010-09-29 11:24:30 +0200 |
| commit | c4ea142424fc5cb43a2db750cb772e84304e5fb8 (patch) | |
| tree | bc6abb5343579120ee5680c46cd927d82064b1e5 /drivers/spi/mxc_spi.c | |
| parent | 2e6e1772c0e34871769be4aef79748fe3e47d953 (diff) | |
| download | talos-obmc-uboot-c4ea142424fc5cb43a2db750cb772e84304e5fb8.tar.gz talos-obmc-uboot-c4ea142424fc5cb43a2db750cb772e84304e5fb8.zip | |
Use common function to set GPIOs for MX3 and MX5
The patch adds support for setting gpios to the
MX51 processor and change name to the corresponding
functions for MX31. In this way, it is possible to get rid
of nasty #ifdef switches related to the processor type.
Signed-off-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'drivers/spi/mxc_spi.c')
| -rw-r--r-- | drivers/spi/mxc_spi.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/spi/mxc_spi.c b/drivers/spi/mxc_spi.c index e15a63caca..802cd2efb0 100644 --- a/drivers/spi/mxc_spi.c +++ b/drivers/spi/mxc_spi.c @@ -23,6 +23,7 @@ #include <spi.h> #include <asm/errno.h> #include <asm/io.h> +#include <mxc_gpio.h> #ifdef CONFIG_MX27 /* i.MX27 has a completely wrong register layout and register definitions in the @@ -68,9 +69,6 @@ static unsigned long spi_bases[] = { 0x53f84000, }; -#define OUT MX31_GPIO_DIRECTION_OUT -#define mxc_gpio_direction mx31_gpio_direction -#define mxc_gpio_set mx31_gpio_set #elif defined(CONFIG_MX51) #include <asm/arch/imx-regs.h> #include <asm/arch/clock.h> @@ -111,13 +109,12 @@ static unsigned long spi_bases[] = { CSPI2_BASE_ADDR, CSPI3_BASE_ADDR, }; -#define mxc_gpio_direction(gpio, dir) (0) -#define mxc_gpio_set(gpio, value) {} -#define OUT 1 #else #error "Unsupported architecture" #endif +#define OUT MXC_GPIO_DIRECTION_OUT + struct mxc_spi_slave { struct spi_slave slave; unsigned long base; @@ -126,6 +123,7 @@ struct mxc_spi_slave { u32 cfg_reg; #endif int gpio; + int ss_pol; }; static inline struct mxc_spi_slave *to_mxc_spi_slave(struct spi_slave *slave) @@ -147,7 +145,7 @@ void spi_cs_activate(struct spi_slave *slave) { struct mxc_spi_slave *mxcs = to_mxc_spi_slave(slave); if (mxcs->gpio > 0) - mxc_gpio_set(mxcs->gpio, mxcs->ctrl_reg & MXC_CSPICTRL_SSPOL); + mxc_gpio_set(mxcs->gpio, mxcs->ss_pol); } void spi_cs_deactivate(struct spi_slave *slave) @@ -155,7 +153,7 @@ void spi_cs_deactivate(struct spi_slave *slave) struct mxc_spi_slave *mxcs = to_mxc_spi_slave(slave); if (mxcs->gpio > 0) mxc_gpio_set(mxcs->gpio, - !(mxcs->ctrl_reg & MXC_CSPICTRL_SSPOL)); + !(mxcs->ss_pol)); } #ifdef CONFIG_MX51 @@ -394,6 +392,7 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, mxcs->slave.bus = bus; mxcs->slave.cs = cs; mxcs->base = spi_bases[bus]; + mxcs->ss_pol = (mode & SPI_CS_HIGH) ? 1 : 0; #ifdef CONFIG_MX51 /* Can be used for i.MX31 too ? */ |
