6ab3d5624e
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
154 lines
3.8 KiB
C
154 lines
3.8 KiB
C
/*
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* Helper functions for I/O pins.
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*
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* Copyright (c) 2004 Axis Communications AB.
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*/
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/ctype.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <asm/io.h>
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#include <asm/arch/pinmux.h>
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#include <asm/arch/hwregs/gio_defs.h>
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struct crisv32_ioport crisv32_ioports[] =
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{
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{
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(unsigned long*)REG_ADDR(gio, regi_gio, rw_pa_oe),
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(unsigned long*)REG_ADDR(gio, regi_gio, rw_pa_dout),
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(unsigned long*)REG_ADDR(gio, regi_gio, r_pa_din),
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8
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},
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{
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(unsigned long*)REG_ADDR(gio, regi_gio, rw_pb_oe),
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(unsigned long*)REG_ADDR(gio, regi_gio, rw_pb_dout),
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(unsigned long*)REG_ADDR(gio, regi_gio, r_pb_din),
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18
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},
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{
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(unsigned long*)REG_ADDR(gio, regi_gio, rw_pc_oe),
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(unsigned long*)REG_ADDR(gio, regi_gio, rw_pc_dout),
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(unsigned long*)REG_ADDR(gio, regi_gio, r_pc_din),
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18
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},
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{
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(unsigned long*)REG_ADDR(gio, regi_gio, rw_pd_oe),
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(unsigned long*)REG_ADDR(gio, regi_gio, rw_pd_dout),
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(unsigned long*)REG_ADDR(gio, regi_gio, r_pd_din),
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18
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},
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{
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(unsigned long*)REG_ADDR(gio, regi_gio, rw_pe_oe),
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(unsigned long*)REG_ADDR(gio, regi_gio, rw_pe_dout),
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(unsigned long*)REG_ADDR(gio, regi_gio, r_pe_din),
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18
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}
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};
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#define NBR_OF_PORTS sizeof(crisv32_ioports)/sizeof(struct crisv32_ioport)
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struct crisv32_iopin crisv32_led1_green;
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struct crisv32_iopin crisv32_led1_red;
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struct crisv32_iopin crisv32_led2_green;
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struct crisv32_iopin crisv32_led2_red;
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struct crisv32_iopin crisv32_led3_green;
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struct crisv32_iopin crisv32_led3_red;
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/* Dummy port used when green LED and red LED is on the same bit */
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static unsigned long io_dummy;
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static struct crisv32_ioport dummy_port =
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{
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&io_dummy,
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&io_dummy,
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&io_dummy,
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18
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};
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static struct crisv32_iopin dummy_led =
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{
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&dummy_port,
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0
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};
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static int __init crisv32_io_init(void)
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{
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int ret = 0;
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/* Initialize LEDs */
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ret += crisv32_io_get_name(&crisv32_led1_green, CONFIG_ETRAX_LED1G);
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ret += crisv32_io_get_name(&crisv32_led1_red, CONFIG_ETRAX_LED1R);
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ret += crisv32_io_get_name(&crisv32_led2_green, CONFIG_ETRAX_LED2G);
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ret += crisv32_io_get_name(&crisv32_led2_red, CONFIG_ETRAX_LED2R);
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ret += crisv32_io_get_name(&crisv32_led3_green, CONFIG_ETRAX_LED3G);
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ret += crisv32_io_get_name(&crisv32_led3_red, CONFIG_ETRAX_LED3R);
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crisv32_io_set_dir(&crisv32_led1_green, crisv32_io_dir_out);
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crisv32_io_set_dir(&crisv32_led1_red, crisv32_io_dir_out);
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crisv32_io_set_dir(&crisv32_led2_green, crisv32_io_dir_out);
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crisv32_io_set_dir(&crisv32_led2_red, crisv32_io_dir_out);
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crisv32_io_set_dir(&crisv32_led3_green, crisv32_io_dir_out);
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crisv32_io_set_dir(&crisv32_led3_red, crisv32_io_dir_out);
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if (!strcmp(CONFIG_ETRAX_LED1G, CONFIG_ETRAX_LED1R))
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crisv32_led1_red = dummy_led;
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if (!strcmp(CONFIG_ETRAX_LED2G, CONFIG_ETRAX_LED2R))
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crisv32_led2_red = dummy_led;
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return ret;
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}
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__initcall(crisv32_io_init);
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int crisv32_io_get(struct crisv32_iopin* iopin,
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unsigned int port, unsigned int pin)
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{
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if (port > NBR_OF_PORTS)
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return -EINVAL;
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if (port > crisv32_ioports[port].pin_count)
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return -EINVAL;
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iopin->bit = 1 << pin;
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iopin->port = &crisv32_ioports[port];
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if (crisv32_pinmux_alloc(port, pin, pin, pinmux_gpio))
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return -EIO;
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return 0;
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}
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int crisv32_io_get_name(struct crisv32_iopin* iopin,
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char* name)
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{
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int port;
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int pin;
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if (toupper(*name) == 'P')
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name++;
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if (toupper(*name) < 'A' || toupper(*name) > 'E')
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return -EINVAL;
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port = toupper(*name) - 'A';
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name++;
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pin = simple_strtoul(name, NULL, 10);
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if (pin < 0 || pin > crisv32_ioports[port].pin_count)
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return -EINVAL;
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iopin->bit = 1 << pin;
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iopin->port = &crisv32_ioports[port];
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if (crisv32_pinmux_alloc(port, pin, pin, pinmux_gpio))
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return -EIO;
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return 0;
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}
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#ifdef CONFIG_PCI
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/* PCI I/O access stuff */
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struct cris_io_operations* cris_iops = NULL;
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EXPORT_SYMBOL(cris_iops);
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#endif
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