Page MenuHomeFreeBSD
Files F140056563

ti_hwmods.c
No OneTemporary
Actions

ti_hwmods.c
View Options

/*-
* Copyright (c) 2015 Oleksandr Tymoshenko <gonzo@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <arm/ti/ti_prcm.h>
#include <arm/ti/ti_hwmods.h>
struct hwmod {
const char *name;
int clock_id;
};
struct hwmod ti_hwmods[] = {
{"i2c1", I2C1_CLK},
{"i2c2", I2C2_CLK},
{"i2c3", I2C3_CLK},
{"i2c4", I2C4_CLK},
{"i2c5", I2C5_CLK},
{"gpio1", GPIO1_CLK},
{"gpio2", GPIO2_CLK},
{"gpio3", GPIO3_CLK},
{"gpio4", GPIO4_CLK},
{"gpio5", GPIO5_CLK},
{"gpio6", GPIO6_CLK},
{"gpio7", GPIO7_CLK},
{"mmc1", MMC1_CLK},
{"mmc2", MMC2_CLK},
{"mmc3", MMC3_CLK},
{"mmc4", MMC4_CLK},
{"mmc5", MMC5_CLK},
{"mmc6", MMC6_CLK},
{"epwmss0", PWMSS0_CLK},
{"epwmss1", PWMSS1_CLK},
{"epwmss2", PWMSS2_CLK},
{"spi0", SPI0_CLK},
{"spi1", SPI1_CLK},
{"timer1", TIMER1_CLK},
{"timer2", TIMER2_CLK},
{"timer3", TIMER3_CLK},
{"timer4", TIMER4_CLK},
{"timer5", TIMER5_CLK},
{"timer6", TIMER6_CLK},
{"timer7", TIMER7_CLK},
{"uart1", UART1_CLK},
{"uart2", UART2_CLK},
{"uart3", UART3_CLK},
{"uart4", UART4_CLK},
{"uart5", UART5_CLK},
{"uart6", UART6_CLK},
{"uart7", UART7_CLK},
{NULL, 0}
};
static inline int
ti_get_hwmods_prop(phandle_t node, void **name)
{
int len;
if ((len = OF_getprop_alloc(node, "ti,hwmods", name)) > 0)
return (len);
return (OF_getprop_alloc(OF_parent(node), "ti,hwmods", name));
}
clk_ident_t
ti_hwmods_get_clock(device_t dev)
{
phandle_t node;
int len, l;
char *name;
char *buf;
int clk;
struct hwmod *hw;
if ((node = ofw_bus_get_node(dev)) == 0)
return (INVALID_CLK_IDENT);
if ((len = ti_get_hwmods_prop(node, (void **)&name)) <= 0)
return (INVALID_CLK_IDENT);
buf = name;
clk = INVALID_CLK_IDENT;
while ((len > 0) && (clk == INVALID_CLK_IDENT)) {
for (hw = ti_hwmods; hw->name != NULL; ++hw) {
if (strcmp(hw->name, name) == 0) {
clk = hw->clock_id;
break;
}
}
/* Slide to the next sub-string. */
l = strlen(name) + 1;
name += l;
len -= l;
}
if (len > 0)
device_printf(dev, "WARNING: more than one ti,hwmod \n");
OF_prop_free(buf);
return (clk);
}
int ti_hwmods_contains(device_t dev, const char *hwmod)
{
phandle_t node;
int len, l;
char *name;
char *buf;
int result;
if ((node = ofw_bus_get_node(dev)) == 0)
return (0);
if ((len = ti_get_hwmods_prop(node, (void **)&name)) <= 0)
return (0);
buf = name;
result = 0;
while (len > 0) {
if (strcmp(name, hwmod) == 0) {
result = 1;
break;
}
/* Slide to the next sub-string. */
l = strlen(name) + 1;
name += l;
len -= l;
}
OF_prop_free(buf);
return (result);
}
int
ti_hwmods_get_unit(device_t dev, const char *hwmod)
{
phandle_t node;
int l, len, hwmodlen, result;
char *name;
char *buf;
if ((node = ofw_bus_get_node(dev)) == 0)
return (0);
if ((len = ti_get_hwmods_prop(node, (void **)&name)) <= 0)
return (0);
buf = name;
hwmodlen = strlen(hwmod);
result = 0;
while (len > 0) {
if (strncmp(name, hwmod, hwmodlen) == 0) {
result = (int)strtoul(name + hwmodlen, NULL, 10);
break;
}
/* Slide to the next sub-string. */
l = strlen(name) + 1;
name += l;
len -= l;
}
OF_prop_free(buf);
return (result);
}

File Metadata

Mime Type
text/x-c
Expires
Sun, Dec 21, 3:43 PM (16 h, 50 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
27098505
Default Alt Text
ti_hwmods.c (4 KB)

Event Timeline