diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/Makefile | 2 | ||||
| -rw-r--r-- | drivers/gpio/mxc_gpio.c (renamed from drivers/gpio/mx31_gpio.c) | 47 | ||||
| -rw-r--r-- | drivers/spi/mxc_spi.c | 15 |
3 files changed, 41 insertions, 23 deletions
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 07d395d..a0f4552 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -27,7 +27,7 @@ LIB := $(obj)libgpio.a COBJS-$(CONFIG_AT91_GPIO) += at91_gpio.o COBJS-$(CONFIG_KIRKWOOD_GPIO) += kw_gpio.o -COBJS-$(CONFIG_MX31_GPIO) += mx31_gpio.o +COBJS-$(CONFIG_MXC_GPIO) += mxc_gpio.o COBJS-$(CONFIG_PCA953X) += pca953x.o COBJS-$(CONFIG_S5P) += s5p_gpio.o diff --git a/drivers/gpio/mx31_gpio.c b/drivers/gpio/mxc_gpio.c index b07f038..663141f 100644 --- a/drivers/gpio/mx31_gpio.c +++ b/drivers/gpio/mxc_gpio.c @@ -21,19 +21,29 @@ * MA 02111-1307 USA */ #include <common.h> -#include <asm/arch/mx31.h> +#ifdef CONFIG_MX31 #include <asm/arch/mx31-regs.h> +#endif +#ifdef CONFIG_MX51 +#include <asm/arch/imx-regs.h> +#endif +#include <asm/io.h> +#include <mxc_gpio.h> /* GPIO port description */ static unsigned long gpio_ports[] = { - [0] = GPIO1_BASE, - [1] = GPIO2_BASE, - [2] = GPIO3_BASE, + [0] = GPIO1_BASE_ADDR, + [1] = GPIO2_BASE_ADDR, + [2] = GPIO3_BASE_ADDR, +#ifdef CONFIG_MX51 + [3] = GPIO4_BASE_ADDR, +#endif }; -int mx31_gpio_direction(unsigned int gpio, enum mx31_gpio_direction direction) +int mxc_gpio_direction(unsigned int gpio, enum mxc_gpio_direction direction) { unsigned int port = gpio >> 5; + struct gpio_regs *regs; u32 l; if (port >= ARRAY_SIZE(gpio_ports)) @@ -41,22 +51,26 @@ int mx31_gpio_direction(unsigned int gpio, enum mx31_gpio_direction direction) gpio &= 0x1f; - l = __REG(gpio_ports[port] + GPIO_GDIR); + regs = (struct gpio_regs *)gpio_ports[port]; + + l = readl(®s->gpio_dir); + switch (direction) { - case MX31_GPIO_DIRECTION_OUT: + case MXC_GPIO_DIRECTION_OUT: l |= 1 << gpio; break; - case MX31_GPIO_DIRECTION_IN: + case MXC_GPIO_DIRECTION_IN: l &= ~(1 << gpio); } - __REG(gpio_ports[port] + GPIO_GDIR) = l; + writel(l, ®s->gpio_dir); return 0; } -void mx31_gpio_set(unsigned int gpio, unsigned int value) +void mxc_gpio_set(unsigned int gpio, unsigned int value) { unsigned int port = gpio >> 5; + struct gpio_regs *regs; u32 l; if (port >= ARRAY_SIZE(gpio_ports)) @@ -64,17 +78,20 @@ void mx31_gpio_set(unsigned int gpio, unsigned int value) gpio &= 0x1f; - l = __REG(gpio_ports[port] + GPIO_DR); + regs = (struct gpio_regs *)gpio_ports[port]; + + l = readl(®s->gpio_dr); if (value) l |= 1 << gpio; else l &= ~(1 << gpio); - __REG(gpio_ports[port] + GPIO_DR) = l; + writel(l, ®s->gpio_dr); } -int mx31_gpio_get(unsigned int gpio) +int mxc_gpio_get(unsigned int gpio) { unsigned int port = gpio >> 5; + struct gpio_regs *regs; u32 l; if (port >= ARRAY_SIZE(gpio_ports)) @@ -82,7 +99,9 @@ int mx31_gpio_get(unsigned int gpio) gpio &= 0x1f; - l = (__REG(gpio_ports[port] + GPIO_DR) >> gpio) & 0x01; + regs = (struct gpio_regs *)gpio_ports[port]; + + l = (readl(®s->gpio_dr) >> gpio) & 0x01; return l; } diff --git a/drivers/spi/mxc_spi.c b/drivers/spi/mxc_spi.c index e15a63c..802cd2e 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 ? */ |