satip-axe/kernel/drivers/stm/clocks/clock-oslayer.h
2015-03-26 17:24:57 +01:00

104 lines
2.6 KiB
C

/*******************************************************************************
*
* File name : clock-oslayer.h
* Description : Low Level API - OS Specifics
*
* COPYRIGHT (C) 2009 STMicroelectronics - All Rights Reserved
* This file is under the GPL 2 License.
*
******************************************************************************/
#ifndef __CLKLLA_OSLAYER_H
#define __CLKLLA_OSLAYER_H
#include <linux/io.h>
#include <linux/stm/sysconf.h>
#include <linux/stm/gpio.h>
#include <linux/stm/pio.h>
#include <asm-generic/errno-base.h>
#define clk_t struct clk
#define CLK_RATE_PROPAGATES 0
/* Register access macros */
#define CLK_READ(addr) ioread32((void *)addr)
#define CLK_WRITE(addr, val) iowrite32(val, (void *)addr)
#define SYSCONF(type, num, lsb, msb) \
static struct sysconf_field *sys_##type##_##num##_##lsb##_##msb
#define SYSCONF_CLAIM(type, num, lsb, msb) \
sys_##type##_##num##_##lsb##_##msb = \
sysconf_claim(type, num, lsb, msb, "Clk lla")
#define SYSCONF_READ(type, num, lsb, msb) \
sysconf_read(sys_##type##_##num##_##lsb##_##msb)
#define SYSCONF_WRITE(type, num, lsb, msb, value) \
sysconf_write(sys_##type##_##num##_##lsb##_##msb, value)
static inline
void PIO_SET_MODE(unsigned long bank, unsigned long line, long mode)
{
static int pin = -ENOSYS;
if (pin == -ENOSYS)
gpio_request(stm_gpio(bank, line), "Clk Observer");
if (pin >= 0)
stm_gpio_direction(pin, mode);
}
#define _CLK_OPS(_name, _desc, _init, _setparent, _setfreq, _recalc, \
_enable, _disable, _observe, _measure, _obspoint) \
static struct clk_ops _name = { \
.init = _init, \
.set_parent = _setparent, \
.set_rate = _setfreq, \
.recalc = _recalc, \
.enable = _enable, \
.disable = _disable, \
.observe = _observe, \
.get_measure = _measure, \
}
#define _CLK(_id, _ops, _nominal, _flags) \
[_id] = (clk_t){ .name = #_id, \
.id = (_id), \
.ops = (_ops), \
.flags = (_flags), \
}
#define _CLK_P(_id, _ops, _nominal, _flags, _parent) \
[_id] = (clk_t){ .name = #_id, \
.id = (_id), \
.ops = (_ops), \
.flags = (_flags), \
.parent = (_parent), \
}
#define _CLK_F(_id, _rate) \
[_id] = (clk_t) { \
.name = #_id, \
.id = (_id), \
.rate = (_rate), \
}
/* Low level API errors */
enum clk_err {
CLK_ERR_NONE = 0,
CLK_ERR_FEATURE_NOT_SUPPORTED = -EPERM,
CLK_ERR_BAD_PARAMETER = -EINVAL,
CLK_ERR_INTERNAL = -EFAULT /* Internal & fatal error */
};
/* Retrieving chip cut (major) */
static inline unsigned long chip_major_version(void)
{
return cpu_data->cut_major;
}
#endif /* #ifndef __CLKLLA_OSLAYER_H */