Date: Sun, 26 Oct 2014 01:26:54 +0000 (UTC) From: Ian Lepore <ian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r273651 - stable/10/sys/arm/at91 Message-ID: <201410260126.s9Q1QsU3047280@svn.freebsd.org>
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Author: ian Date: Sun Oct 26 01:26:53 2014 New Revision: 273651 URL: https://svnweb.freebsd.org/changeset/base/273651 Log: MFC r270025: Implement the FDT static pinctl/pinmux spec for Atmel. Added: stable/10/sys/arm/at91/at91_pinctrl.c - copied unchanged from r270025, head/sys/arm/at91/at91_pinctrl.c Modified: stable/10/sys/arm/at91/at91_pio.c stable/10/sys/arm/at91/at91_piovar.h Directory Properties: stable/10/ (props changed) Copied: stable/10/sys/arm/at91/at91_pinctrl.c (from r270025, head/sys/arm/at91/at91_pinctrl.c) ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ stable/10/sys/arm/at91/at91_pinctrl.c Sun Oct 26 01:26:53 2014 (r273651, copy of r270025, head/sys/arm/at91/at91_pinctrl.c) @@ -0,0 +1,524 @@ +/*- + * Copyright (c) 2014 Warner Losh. 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/resource.h> +#include <sys/systm.h> +#include <sys/rman.h> + +#include <machine/bus.h> + +#include <arm/at91/at91var.h> +#include <arm/at91/at91_piovar.h> + +#include <dev/fdt/fdt_common.h> +#include <dev/ofw/openfirm.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +#define BUS_PASS_PINMUX (BUS_PASS_INTERRUPT + 1) + +struct pinctrl_range { + uint64_t bus; + uint64_t host; + uint64_t size; +}; + +struct pinctrl_softc { + device_t dev; + phandle_t node; + + struct pinctrl_range *ranges; + int nranges; + + pcell_t acells, scells; + int done_pinmux; +}; + +struct pinctrl_devinfo { + struct ofw_bus_devinfo obdinfo; + struct resource_list rl; +}; + +static int +at91_pinctrl_probe(device_t dev) +{ + + if (!ofw_bus_is_compatible(dev, "atmel,at91rm9200-pinctrl")) + return (ENXIO); + device_set_desc(dev, "pincontrol bus"); + return (0); +} + +/* XXX Make this a subclass of simplebus */ + +static struct pinctrl_devinfo * +at91_pinctrl_setup_dinfo(device_t dev, phandle_t node) +{ + struct pinctrl_softc *sc; + struct pinctrl_devinfo *ndi; + uint32_t *reg, *intr, icells; + uint64_t phys, size; + phandle_t iparent; + int i, j, k; + int nintr; + int nreg; + + sc = device_get_softc(dev); + + ndi = malloc(sizeof(*ndi), M_DEVBUF, M_WAITOK | M_ZERO); + if (ofw_bus_gen_setup_devinfo(&ndi->obdinfo, node) != 0) { + free(ndi, M_DEVBUF); + return (NULL); + } + + resource_list_init(&ndi->rl); + nreg = OF_getencprop_alloc(node, "reg", sizeof(*reg), (void **)®); + if (nreg == -1) + nreg = 0; + if (nreg % (sc->acells + sc->scells) != 0) { +// if (bootverbose) + device_printf(dev, "Malformed reg property on <%s>\n", + ndi->obdinfo.obd_name); + nreg = 0; + } + + for (i = 0, k = 0; i < nreg; i += sc->acells + sc->scells, k++) { + phys = size = 0; + for (j = 0; j < sc->acells; j++) { + phys <<= 32; + phys |= reg[i + j]; + } + for (j = 0; j < sc->scells; j++) { + size <<= 32; + size |= reg[i + sc->acells + j]; + } + + resource_list_add(&ndi->rl, SYS_RES_MEMORY, k, + phys, phys + size - 1, size); + } + free(reg, M_OFWPROP); + + nintr = OF_getencprop_alloc(node, "interrupts", sizeof(*intr), + (void **)&intr); + if (nintr > 0) { + if (OF_searchencprop(node, "interrupt-parent", &iparent, + sizeof(iparent)) == -1) { + device_printf(dev, "No interrupt-parent found, " + "assuming direct parent\n"); + iparent = OF_parent(node); + } + if (OF_searchencprop(OF_xref_phandle(iparent), + "#interrupt-cells", &icells, sizeof(icells)) == -1) { + device_printf(dev, "Missing #interrupt-cells property, " + "assuming <1>\n"); + icells = 1; + } + if (icells < 1 || icells > nintr) { + device_printf(dev, "Invalid #interrupt-cells property " + "value <%d>, assuming <1>\n", icells); + icells = 1; + } + for (i = 0, k = 0; i < nintr; i += icells, k++) { + intr[i] = ofw_bus_map_intr(dev, iparent, icells, + &intr[i]); + resource_list_add(&ndi->rl, SYS_RES_IRQ, k, intr[i], + intr[i], 1); + } + free(intr, M_OFWPROP); + } + + return (ndi); +} + +static int +at91_pinctrl_fill_ranges(phandle_t node, struct pinctrl_softc *sc) +{ + int host_address_cells; + cell_t *base_ranges; + ssize_t nbase_ranges; + int err; + int i, j, k; + + err = OF_searchencprop(OF_parent(node), "#address-cells", + &host_address_cells, sizeof(host_address_cells)); + if (err <= 0) + return (-1); + + nbase_ranges = OF_getproplen(node, "ranges"); + if (nbase_ranges < 0) + return (-1); + sc->nranges = nbase_ranges / sizeof(cell_t) / + (sc->acells + host_address_cells + sc->scells); + if (sc->nranges == 0) + return (0); + + sc->ranges = malloc(sc->nranges * sizeof(sc->ranges[0]), + M_DEVBUF, M_WAITOK); + base_ranges = malloc(nbase_ranges, M_DEVBUF, M_WAITOK); + OF_getencprop(node, "ranges", base_ranges, nbase_ranges); + + for (i = 0, j = 0; i < sc->nranges; i++) { + sc->ranges[i].bus = 0; + for (k = 0; k < sc->acells; k++) { + sc->ranges[i].bus <<= 32; + sc->ranges[i].bus |= base_ranges[j++]; + } + sc->ranges[i].host = 0; + for (k = 0; k < host_address_cells; k++) { + sc->ranges[i].host <<= 32; + sc->ranges[i].host |= base_ranges[j++]; + } + sc->ranges[i].size = 0; + for (k = 0; k < sc->scells; k++) { + sc->ranges[i].size <<= 32; + sc->ranges[i].size |= base_ranges[j++]; + } + } + + free(base_ranges, M_DEVBUF); + return (sc->nranges); +} + +static int +at91_pinctrl_attach(device_t dev) +{ + struct pinctrl_softc *sc; + struct pinctrl_devinfo *di; + phandle_t node; + device_t cdev; + + sc = device_get_softc(dev); + node = ofw_bus_get_node(dev); + + sc->dev = dev; + sc->node = node; + + /* + * Some important numbers + */ + sc->acells = 2; + OF_getencprop(node, "#address-cells", &sc->acells, sizeof(sc->acells)); + sc->scells = 1; + OF_getencprop(node, "#size-cells", &sc->scells, sizeof(sc->scells)); + + if (at91_pinctrl_fill_ranges(node, sc) < 0) { + device_printf(dev, "could not get ranges\n"); + return (ENXIO); + } + + for (node = OF_child(node); node > 0; node = OF_peer(node)) { + if ((di = at91_pinctrl_setup_dinfo(dev, node)) == NULL) + continue; + cdev = device_add_child(dev, NULL, -1); + if (cdev == NULL) { + device_printf(dev, "<%s>: device_add_child failed\n", + di->obdinfo.obd_name); + resource_list_free(&di->rl); + ofw_bus_gen_destroy_devinfo(&di->obdinfo); + free(di, M_DEVBUF); + continue; + } + device_set_ivars(cdev, di); + } + + return (bus_generic_attach(dev)); +} + +static const struct ofw_bus_devinfo * +pinctrl_get_devinfo(device_t bus __unused, device_t child) +{ + struct pinctrl_devinfo *ndi; + + ndi = device_get_ivars(child); + return (&ndi->obdinfo); +} + +static struct resource * +pinctrl_alloc_resource(device_t bus, device_t child, int type, int *rid, + u_long start, u_long end, u_long count, u_int flags) +{ + struct pinctrl_softc *sc; + struct pinctrl_devinfo *di; + struct resource_list_entry *rle; + int j; + + sc = device_get_softc(bus); + + /* + * Request for the default allocation with a given rid: use resource + * list stored in the local device info. + */ + if ((start == 0UL) && (end == ~0UL)) { + if ((di = device_get_ivars(child)) == NULL) + return (NULL); + + if (type == SYS_RES_IOPORT) + type = SYS_RES_MEMORY; + + rle = resource_list_find(&di->rl, type, *rid); + if (rle == NULL) { +// if (bootverbose) + device_printf(bus, "no default resources for " + "rid = %d, type = %d\n", *rid, type); + return (NULL); + } + start = rle->start; + end = rle->end; + count = rle->count; + } + + if (type == SYS_RES_MEMORY) { + /* Remap through ranges property */ + for (j = 0; j < sc->nranges; j++) { + if (start >= sc->ranges[j].bus && end < + sc->ranges[j].bus + sc->ranges[j].size) { + start -= sc->ranges[j].bus; + start += sc->ranges[j].host; + end -= sc->ranges[j].bus; + end += sc->ranges[j].host; + break; + } + } + if (j == sc->nranges && sc->nranges != 0) { +// if (bootverbose) + device_printf(bus, "Could not map resource " + "%#lx-%#lx\n", start, end); + + return (NULL); + } + } + + return (bus_generic_alloc_resource(bus, child, type, rid, start, end, + count, flags)); +} + +static int +pinctrl_print_res(struct pinctrl_devinfo *di) +{ + int rv; + + rv = 0; + rv += resource_list_print_type(&di->rl, "mem", SYS_RES_MEMORY, "%#lx"); + rv += resource_list_print_type(&di->rl, "irq", SYS_RES_IRQ, "%ld"); + return (rv); +} + +static void +pinctrl_probe_nomatch(device_t bus, device_t child) +{ + const char *name, *type, *compat; + +// if (!bootverbose) + return; + + name = ofw_bus_get_name(child); + type = ofw_bus_get_type(child); + compat = ofw_bus_get_compat(child); + + device_printf(bus, "<%s>", name != NULL ? name : "unknown"); + pinctrl_print_res(device_get_ivars(child)); + if (!ofw_bus_status_okay(child)) + printf(" disabled"); + if (type) + printf(" type %s", type); + if (compat) + printf(" compat %s", compat); + printf(" (no driver attached)\n"); +} + +static int +pinctrl_print_child(device_t bus, device_t child) +{ + int rv; + + rv = bus_print_child_header(bus, child); + rv += pinctrl_print_res(device_get_ivars(child)); + if (!ofw_bus_status_okay(child)) + rv += printf(" disabled"); + rv += bus_print_child_footer(bus, child); + return (rv); +} + +const char *periphs[] = {"gpio", "periph A", "periph B", "periph C", "periph D", "periph E" }; + +static void +pinctrl_walk_tree(device_t bus, phandle_t node) +{ + struct pinctrl_softc *sc; + char status[10]; + char name[32]; + phandle_t pinctrl[32], pins[32 * 4], scratch; + ssize_t len, npins; + int i, j; + + sc = device_get_softc(bus); + for (node = OF_child(node); node > 0; node = OF_peer(node)) { + pinctrl_walk_tree(bus, node); + memset(status, 0, sizeof(status)); + memset(name, 0, sizeof(name)); + OF_getprop(node, "status", status, sizeof(status)); + OF_getprop(node, "name", name, sizeof(name)); + if (strcmp(status, "okay") != 0) { +// printf("pinctrl: omitting node %s since it isn't active\n", name); + continue; + } + len = OF_getencprop(node, "pinctrl-0", pinctrl, sizeof(pinctrl)); + if (len <= 0) { +// printf("pinctrl: no pinctrl-0 property for node %s, omitting\n", name); + continue; + } + len /= sizeof(phandle_t); + printf("pinctrl: Found active node %s\n", name); + for (i = 0; i < len; i++) { + scratch = OF_xref_phandle(pinctrl[i]); + npins = OF_getencprop(scratch, "atmel,pins", pins, sizeof(pins)); + if (npins <= 0) { + printf("We're doing it wrong %s\n", name); + continue; + } + memset(name, 0, sizeof(name)); + OF_getprop(scratch, "name", name, sizeof(name)); + npins /= (4 * 4); + printf("----> need to cope with %d more pins for %s\n", npins, name); + for (j = 0; j < npins; j++) { + uint32_t unit = pins[j * 4]; + uint32_t pin = pins[j * 4 + 1]; + uint32_t periph = pins[j * 4 + 2]; + uint32_t flags = pins[j * 4 + 3]; + uint32_t pio = (0xfffffff & sc->ranges[0].bus) + 0x200 * unit; + printf("P%c%d %s %#x\n", unit + 'A', pin, periphs[periph], + flags); + switch (periph) { + case 0: + at91_pio_use_gpio(pio, 1u << pin); + at91_pio_gpio_pullup(pio, 1u << pin, !!(flags & 1)); + at91_pio_gpio_high_z(pio, 1u << pin, !!(flags & 2)); + at91_pio_gpio_set_deglitch(pio, 1u << pin, !!(flags & 4)); + // at91_pio_gpio_pulldown(pio, 1u << pin, !!(flags & 8)); + // at91_pio_gpio_dis_schmidt(pio, 1u << pin, !!(flags & 16)); + break; + case 1: + at91_pio_use_periph_a(pio, 1u << pin, flags); + break; + case 2: + at91_pio_use_periph_b(pio, 1u << pin, flags); + break; + } + } + } + } +} + +static void +pinctrl_new_pass(device_t bus) +{ + struct pinctrl_softc *sc; + phandle_t node; + + sc = device_get_softc(bus); + + bus_generic_new_pass(bus); + + if (sc->done_pinmux || bus_current_pass < BUS_PASS_PINMUX) + return; + sc->done_pinmux++; + + node = OF_peer(0); + if (node == -1) + return; + pinctrl_walk_tree(bus, node); +} + +static device_method_t at91_pinctrl_methods[] = { + DEVMETHOD(device_probe, at91_pinctrl_probe), + DEVMETHOD(device_attach, at91_pinctrl_attach), + + DEVMETHOD(bus_print_child, pinctrl_print_child), + DEVMETHOD(bus_probe_nomatch, pinctrl_probe_nomatch), + DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), + DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), + DEVMETHOD(bus_alloc_resource, pinctrl_alloc_resource), + DEVMETHOD(bus_release_resource, bus_generic_release_resource), + DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), + DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), + DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), + DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), + DEVMETHOD(bus_new_pass, pinctrl_new_pass), + + /* ofw_bus interface */ + DEVMETHOD(ofw_bus_get_devinfo, pinctrl_get_devinfo), + DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), + DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), + DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), + DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), + DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), + + DEVMETHOD_END +}; + +static driver_t at91_pinctrl_driver = { + "at91_pinctrl", + at91_pinctrl_methods, + sizeof(struct pinctrl_softc), +}; + +static devclass_t at91_pinctrl_devclass; + +EARLY_DRIVER_MODULE(at91_pinctrl, simplebus, at91_pinctrl_driver, at91_pinctrl_devclass, + NULL, NULL, BUS_PASS_BUS); + +/* + * dummy driver to force pass BUS_PASS_PINMUX to happen. + */ +static int +at91_pingroup_probe(device_t dev) +{ + return ENXIO; +} + +static device_method_t at91_pingroup_methods[] = { + DEVMETHOD(device_probe, at91_pingroup_probe), + + DEVMETHOD_END +}; + + +static driver_t at91_pingroup_driver = { + "at91_pingroup", + at91_pingroup_methods, + 0, +}; + +static devclass_t at91_pingroup_devclass; + +EARLY_DRIVER_MODULE(at91_pingroup, at91_pinctrl, at91_pingroup_driver, at91_pingroup_devclass, + NULL, NULL, BUS_PASS_PINMUX); Modified: stable/10/sys/arm/at91/at91_pio.c ============================================================================== --- stable/10/sys/arm/at91/at91_pio.c Sun Oct 26 01:15:16 2014 (r273650) +++ stable/10/sys/arm/at91/at91_pio.c Sun Oct 26 01:26:53 2014 (r273651) @@ -591,6 +591,17 @@ at91_pio_gpio_set_deglitch(uint32_t pio, } void +at91_pio_gpio_pullup(uint32_t pio, uint32_t data_mask, int do_pullup) +{ + uint32_t *PIO = (uint32_t *)(AT91_BASE + pio); + + if (do_pullup) + PIO[PIO_PUER / 4] = data_mask; + else + PIO[PIO_PUDR / 4] = data_mask; +} + +void at91_pio_gpio_set_interrupt(uint32_t pio, uint32_t data_mask, int enable_interrupt) { @@ -611,12 +622,21 @@ at91_pio_gpio_clear_interrupt(uint32_t p return (PIO[PIO_ISR / 4]); } +static void +at91_pio_new_pass(device_t dev) +{ + + device_printf(dev, "Pass %d\n", bus_current_pass); +} + static device_method_t at91_pio_methods[] = { /* Device interface */ DEVMETHOD(device_probe, at91_pio_probe), DEVMETHOD(device_attach, at91_pio_attach), DEVMETHOD(device_detach, at91_pio_detach), + DEVMETHOD(bus_new_pass, at91_pio_new_pass), + DEVMETHOD_END }; @@ -626,10 +646,5 @@ static driver_t at91_pio_driver = { sizeof(struct at91_pio_softc), }; -#ifdef FDT -DRIVER_MODULE(at91_pio, simplebus, at91_pio_driver, at91_pio_devclass, NULL, - NULL); -#else -DRIVER_MODULE(at91_pio, atmelarm, at91_pio_driver, at91_pio_devclass, NULL, - NULL); -#endif +EARLY_DRIVER_MODULE(at91_pio, at91_pinctrl, at91_pio_driver, at91_pio_devclass, + NULL, NULL, BUS_PASS_INTERRUPT); Modified: stable/10/sys/arm/at91/at91_piovar.h ============================================================================== --- stable/10/sys/arm/at91/at91_piovar.h Sun Oct 26 01:15:16 2014 (r273650) +++ stable/10/sys/arm/at91/at91_piovar.h Sun Oct 26 01:26:53 2014 (r273651) @@ -45,5 +45,6 @@ void at91_pio_gpio_set_deglitch(uint32_t void at91_pio_gpio_set_interrupt(uint32_t pio, uint32_t data_mask, int enable_interrupt); uint32_t at91_pio_gpio_clear_interrupt(uint32_t pio); +void at91_pio_gpio_pullup(uint32_t pio, uint32_t data_mask, int do_pullup); #endif /* ARM_AT91_AT91_PIOVAR_H */
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