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/************************************************************************
*
* Copyright (c) 2007
* Infineon Technologies AG
* St. Martin Strasse 53; 81669 Muenchen; Germany
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
************************************************************************/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
#include <asm/addrspace.h>
#include <linux/platform_device.h>
#include <lantiq_soc.h>
#include <svip_mux.h>
#include <sys1_reg.h>
#include <sys2_reg.h>
#include <svip_pms.h>
#define DRV_NAME "ltq_mux"
static void ltq_mux_port_init(const int port,
const struct ltq_mux_pin *pins,
const int pin_max)
{
unsigned int i;
for (i = 0; i < pin_max; i++)
ltq_gpio_configure(port,
i,
pins[i].dirin,
pins[i].puen,
pins[i].altsel0,
pins[i].altsel1);
}
static int ltq_mux_probe(struct platform_device *pdev)
{
struct ltq_mux_settings *mux_settings = dev_get_platdata(&pdev->dev);
if (mux_settings->mux_p0)
ltq_mux_port_init(0,
mux_settings->mux_p0,
LTQ_MUX_P0_PINS);
if (mux_settings->mux_p1)
ltq_mux_port_init(1,
mux_settings->mux_p1,
LTQ_MUX_P1_PINS);
if (mux_settings->mux_p2)
ltq_mux_port_init(2,
mux_settings->mux_p2,
LTQ_MUX_P2_PINS);
if (mux_settings->mux_p3)
ltq_mux_port_init(3,
mux_settings->mux_p3,
LTQ_MUX_P3_PINS);
if (mux_settings->mux_p4)
ltq_mux_port_init(4,
mux_settings->mux_p4,
LTQ_MUX_P4_PINS);
return 0;
}
int ltq_mux_read_procmem(char *buf, char **start, off_t offset,
int count, int *eof, void *data)
{
int len = 0;
int t = 0, i = 0;
u32 port_clk[5] = {
SYS1_CLKENR_PORT0,
SYS1_CLKENR_PORT1,
SYS1_CLKENR_PORT2,
SYS1_CLKENR_PORT3,
SYS2_CLKENR_PORT4,
};
#define PROC_PRINT(fmt, args...) \
do { \
int c_len = 0; \
c_len = snprintf(buf + len, count - len, fmt, ## args); \
if (c_len <= 0) \
goto out; \
if (c_len >= (count - len)) { \
len += (count - len); \
goto out; \
} \
len += c_len; \
if (offset > 0) { \
if (len > offset) { \
len -= offset; \
memmove(buf, buf + offset, len); \
offset = 0; \
} else { \
offset -= len; \
len = 0; \
} \
} \
} while (0)
PROC_PRINT("\nVINETIC-SVIP Multiplex Settings\n");
PROC_PRINT(" 3 2 1 0\n");
PROC_PRINT(" 10987654321098765432109876543210\n");
PROC_PRINT(" --------------------------------\n");
for (i = 0; i < ARRAY_SIZE(port_clk); i++) {
if (i < 4) {
if (!svip_sys1_clk_is_enabled(port_clk[i]))
continue;
} else {
if (!svip_sys2_clk_is_enabled(port_clk[i]))
continue;
}
PROC_PRINT("P%d.%-10s", i, "DIR:");
for (t = 31; t != -1; t--)
PROC_PRINT("%d", ltq_port_get_dir(i, t) == 1 ? 1 : 0);
PROC_PRINT("\n");
PROC_PRINT("P%d.%-10s", i, "PUEN:");
for (t = 31; t != -1; t--)
PROC_PRINT("%d", ltq_port_get_puden(i, t) == 1 ? 1 : 0);
PROC_PRINT("\n");
PROC_PRINT("P%d.%-10s", i, "ALTSEL0:");
for (t = 31; t != -1; t--)
PROC_PRINT("%d",
ltq_port_get_altsel0(i, t) == 1 ? 1 : 0);
PROC_PRINT("\n");
PROC_PRINT("P%d.%-10s", i, "ALTSEL1:");
for (t = 31; t != -1; t--)
PROC_PRINT("%d",
ltq_port_get_altsel1(i, t) == 1 ? 1 : 0);
PROC_PRINT("\n\n");
}
out:
if (len < 0) {
len = 0;
*eof = 1;
} else if (len < count) {
*eof = 1;
} else {
len = count;
}
*start = buf;
return len;
}
static struct platform_driver ltq_mux_driver = {
.probe = ltq_mux_probe,
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
},
};
int __init ltq_mux_init(void)
{
int ret = platform_driver_register(<q_mux_driver);
if (ret) {
printk(KERN_INFO DRV_NAME
": Error registering platform driver!");
return ret;
}
return create_proc_read_entry("driver/ltq_mux", 0, NULL,
ltq_mux_read_procmem, NULL) == NULL;
}
module_init(ltq_mux_init);
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