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-rw-r--r--target/linux/etrax/files/arch/cris/arch-v10/drivers/gpio_syscalls.c191
1 files changed, 191 insertions, 0 deletions
diff --git a/target/linux/etrax/files/arch/cris/arch-v10/drivers/gpio_syscalls.c b/target/linux/etrax/files/arch/cris/arch-v10/drivers/gpio_syscalls.c
new file mode 100644
index 0000000000..b6300aa9cd
--- /dev/null
+++ b/target/linux/etrax/files/arch/cris/arch-v10/drivers/gpio_syscalls.c
@@ -0,0 +1,191 @@
+#include <linux/autoconf.h>
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+
+#include <asm/uaccess.h>
+#include <linux/gpio_syscalls.h>
+
+#include <asm/etraxgpio.h>
+#include <asm/arch/svinto.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/irq.h>
+#include <asm/arch/io_interface_mux.h>
+
+#include <asm/unistd.h>
+
+
+extern int errno;
+
+
+asmlinkage void sys_gpiosetbits(unsigned char port, unsigned int bits){
+ switch(port){
+ case 'G':
+ case 'g':
+ *R_PORT_G_DATA = port_g_data_shadow |= bits;
+ break;
+
+ case 'A':
+ case 'a':
+ *R_PORT_PA_DATA = port_pa_data_shadow |= bits;
+ break;
+
+ case 'B':
+ case 'b':
+ *R_PORT_PB_DATA = port_pb_data_shadow |= bits;
+ break;
+
+ };
+};
+
+
+asmlinkage void sys_gpioclearbits(unsigned char port, unsigned int bits){
+ switch(port){
+ case 'G':
+ case 'g':
+ *R_PORT_G_DATA = port_g_data_shadow &= ~bits;
+ break;
+
+ case 'A':
+ case 'a':
+ *R_PORT_PA_DATA = port_pa_data_shadow &= ~bits;
+ break;
+
+ case 'B':
+ case 'b':
+ *R_PORT_PB_DATA = port_pb_data_shadow &= ~bits;
+ break;
+
+ };
+};
+
+asmlinkage void sys_gpiosetdir(unsigned char port, unsigned char dir, unsigned int bits){
+ if((dir=='I' )||(dir=='i')){
+ switch(port){
+ case 'G':
+ case 'g':
+ if(bits & (1<<0)){
+ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, g0dir);
+ };
+ if((bits & 0x0000FF00)==0x0000FF00){
+ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, g8_15dir);
+ };
+ if((bits & 0x00FF0000)==0x00FF0000){
+ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, g16_23dir);
+ };
+ if(bits & (1<<24)){
+ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, g24dir);
+ };
+ *R_GEN_CONFIG = genconfig_shadow;
+ break;
+
+ case 'A':
+ case 'a':
+ *R_PORT_PA_DIR = port_pa_dir_shadow &= ~(bits & 0xff);
+ break;
+
+ case 'B':
+ case 'b':
+ *R_PORT_PB_DIR = port_pb_dir_shadow &= ~(bits & 0xff);
+ break;
+ };
+ } else if((dir=='O' )||(dir=='o')){
+ switch(port){
+ case 'G':
+ case 'g':
+ if(bits & (1<<0)){
+ genconfig_shadow |= IO_MASK(R_GEN_CONFIG, g0dir);
+ };
+ if((bits & 0x0000FF00)==0x0000FF00){
+ genconfig_shadow |= IO_MASK(R_GEN_CONFIG, g8_15dir);
+ };
+ if((bits & 0x00FF0000)==0x00FF0000){
+ genconfig_shadow |= IO_MASK(R_GEN_CONFIG, g8_15dir);
+ };
+ if(bits & (1<<24)){
+ genconfig_shadow |= IO_MASK(R_GEN_CONFIG, g24dir);
+ };
+ *R_GEN_CONFIG = genconfig_shadow;
+ break;
+
+ case 'A':
+ case 'a':
+ *R_PORT_PA_DIR = port_pa_dir_shadow |= (bits & 0xff);
+ break;
+
+ case 'B':
+ case 'b':
+ *R_PORT_PB_DIR = port_pb_dir_shadow |= (bits & 0xff);
+ break;
+ };
+ };
+};
+
+
+asmlinkage void sys_gpiotogglebit(unsigned char port, unsigned int bits){
+ switch(port){
+ case 'G':
+ case 'g':
+ if(port_g_data_shadow & bits){
+ *R_PORT_G_DATA = port_g_data_shadow &= ~bits;
+ } else {
+ *R_PORT_G_DATA = port_g_data_shadow |= bits;
+ };
+ break;
+
+ case 'A':
+ case 'a':
+ if(*R_PORT_PA_DATA & bits){
+ *R_PORT_PA_DATA = port_pa_data_shadow &= ~(bits & 0xff);
+ } else {
+ *R_PORT_PA_DATA = port_pa_data_shadow |= (bits & 0xff);
+ };
+ break;
+
+ case 'B':
+ case 'b':
+ if(*R_PORT_PB_DATA & bits){
+ *R_PORT_PB_DATA = port_pb_data_shadow &= ~(bits & 0xff);
+ } else {
+ *R_PORT_PB_DATA = port_pb_data_shadow |= (bits & 0xff);
+ };
+ break;
+
+ };
+};
+
+
+asmlinkage unsigned int sys_gpiogetbits(unsigned char port, unsigned int bits){
+ unsigned int data = 0;
+ switch(port){
+ case 'G':
+ case 'g':
+ data = *R_PORT_G_DATA;
+ break;
+
+ case 'A':
+ case 'a':
+ data = *R_PORT_PA_DATA;
+ break;
+
+ case 'B':
+ case 'b':
+ data = *R_PORT_PB_DATA;
+ break;
+
+ };
+ data &= bits;
+ return data;
+};
+
+