diff options
Diffstat (limited to 'arch/arm/mach-omap1/fpga.c')
| -rw-r--r-- | arch/arm/mach-omap1/fpga.c | 62 |
1 files changed, 33 insertions, 29 deletions
diff --git a/arch/arm/mach-omap1/fpga.c b/arch/arm/mach-omap1/fpga.c index 5cfce1636da..3c0e4221920 100644 --- a/arch/arm/mach-omap1/fpga.c +++ b/arch/arm/mach-omap1/fpga.c @@ -17,22 +17,25 @@ */ #include <linux/types.h> +#include <linux/gpio.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/io.h> -#include <mach/hardware.h> #include <asm/irq.h> #include <asm/mach/irq.h> -#include <plat/fpga.h> -#include <mach/gpio.h> +#include <mach/hardware.h> + +#include "iomap.h" +#include "common.h" +#include "fpga.h" -static void fpga_mask_irq(unsigned int irq) +static void fpga_mask_irq(struct irq_data *d) { - irq -= OMAP_FPGA_IRQ_BASE; + unsigned int irq = d->irq - OMAP_FPGA_IRQ_BASE; if (irq < 8) __raw_writeb((__raw_readb(OMAP1510_FPGA_IMR_LO) @@ -58,14 +61,14 @@ static inline u32 get_fpga_unmasked_irqs(void) } -static void fpga_ack_irq(unsigned int irq) +static void fpga_ack_irq(struct irq_data *d) { /* Don't need to explicitly ACK FPGA interrupts */ } -static void fpga_unmask_irq(unsigned int irq) +static void fpga_unmask_irq(struct irq_data *d) { - irq -= OMAP_FPGA_IRQ_BASE; + unsigned int irq = d->irq - OMAP_FPGA_IRQ_BASE; if (irq < 8) __raw_writeb((__raw_readb(OMAP1510_FPGA_IMR_LO) | (1 << irq)), @@ -78,13 +81,13 @@ static void fpga_unmask_irq(unsigned int irq) | (1 << (irq - 16))), INNOVATOR_FPGA_IMR2); } -static void fpga_mask_ack_irq(unsigned int irq) +static void fpga_mask_ack_irq(struct irq_data *d) { - fpga_mask_irq(irq); - fpga_ack_irq(irq); + fpga_mask_irq(d); + fpga_ack_irq(d); } -void innovator_fpga_IRQ_demux(unsigned int irq, struct irq_desc *desc) +static void innovator_fpga_IRQ_demux(unsigned int irq, struct irq_desc *desc) { u32 stat; int fpga_irq; @@ -105,17 +108,17 @@ void innovator_fpga_IRQ_demux(unsigned int irq, struct irq_desc *desc) static struct irq_chip omap_fpga_irq_ack = { .name = "FPGA-ack", - .ack = fpga_mask_ack_irq, - .mask = fpga_mask_irq, - .unmask = fpga_unmask_irq, + .irq_ack = fpga_mask_ack_irq, + .irq_mask = fpga_mask_irq, + .irq_unmask = fpga_unmask_irq, }; static struct irq_chip omap_fpga_irq = { .name = "FPGA", - .ack = fpga_ack_irq, - .mask = fpga_mask_irq, - .unmask = fpga_unmask_irq, + .irq_ack = fpga_ack_irq, + .irq_mask = fpga_mask_irq, + .irq_unmask = fpga_unmask_irq, }; /* @@ -132,8 +135,7 @@ static struct irq_chip omap_fpga_irq = { * mask_ack routine for all of the FPGA interrupts has been changed from * fpga_mask_ack_irq() to fpga_ack_irq() so that the specific FPGA interrupt * being serviced is left unmasked. We can do this because the FPGA cascade - * interrupt is installed with the IRQF_DISABLED flag, which leaves all - * interrupts masked at the CPU while an FPGA interrupt handler executes. + * interrupt is run with all interrupts masked. * * Limited testing indicates that this workaround appears to be effective * for the smc9194 Ethernet driver used on the Innovator. It should work @@ -143,7 +145,7 @@ static struct irq_chip omap_fpga_irq = { */ void omap1510_fpga_init_irq(void) { - int i; + int i, res; __raw_writeb(0, OMAP1510_FPGA_IMR_LO); __raw_writeb(0, OMAP1510_FPGA_IMR_HI); @@ -156,17 +158,17 @@ void omap1510_fpga_init_irq(void) * The touchscreen interrupt is level-sensitive, so * we'll use the regular mask_ack routine for it. */ - set_irq_chip(i, &omap_fpga_irq_ack); + irq_set_chip(i, &omap_fpga_irq_ack); } else { /* * All FPGA interrupts except the touchscreen are * edge-sensitive, so we won't mask them. */ - set_irq_chip(i, &omap_fpga_irq); + irq_set_chip(i, &omap_fpga_irq); } - set_irq_handler(i, handle_edge_irq); + irq_set_handler(i, handle_edge_irq); set_irq_flags(i, IRQF_VALID); } @@ -177,10 +179,12 @@ void omap1510_fpga_init_irq(void) * NOTE: For general GPIO/MPUIO access and interrupts, please see * gpio.[ch] */ - gpio_request(13, "FPGA irq"); + res = gpio_request(13, "FPGA irq"); + if (res) { + pr_err("%s failed to get gpio\n", __func__); + return; + } gpio_direction_input(13); - set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING); - set_irq_chained_handler(OMAP1510_INT_FPGA, innovator_fpga_IRQ_demux); + irq_set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING); + irq_set_chained_handler(OMAP1510_INT_FPGA, innovator_fpga_IRQ_demux); } - -EXPORT_SYMBOL(omap1510_fpga_init_irq); |