diff options
Diffstat (limited to 'freebsd/sys/arm/ti/ti_hwmods.c')
| -rw-r--r-- | freebsd/sys/arm/ti/ti_hwmods.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/freebsd/sys/arm/ti/ti_hwmods.c b/freebsd/sys/arm/ti/ti_hwmods.c new file mode 100644 index 00000000..0e703472 --- /dev/null +++ b/freebsd/sys/arm/ti/ti_hwmods.c @@ -0,0 +1,206 @@ +#include <machine/rtems-bsd-kernel-space.h> + +/*- + * 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} +}; + +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 = OF_getprop_alloc(node, "ti,hwmods", 1, (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 = OF_getprop_alloc(node, "ti,hwmods", 1, (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 = OF_getprop_alloc(node, "ti,hwmods", 1, (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); +} |