Author: manu Date: Thu Dec 17 17:11:14 2020 New Revision: 368725 URL: https://svnweb.freebsd.org/changeset/base/368725
Log: Add IRQ resource to SPIBUS Add capability to SPIBUS to have child device with IRQ. For example many ADC chip have a dedicated pin to signal "data ready" and the host can just wait for a interrupt to go out and read the result. It is the same code as in R282674 and R282702 for IICBUS by Michal Meloun Submitted by: Oskar Holmund <oskar.holml...@ohdata.se> Differential Revision: https://reviews.freebsd.org/D27396 Modified: head/sys/dev/spibus/ofw_spibus.c head/sys/dev/spibus/spibus.c head/sys/dev/spibus/spibusvar.h Modified: head/sys/dev/spibus/ofw_spibus.c ============================================================================== --- head/sys/dev/spibus/ofw_spibus.c Thu Dec 17 17:09:43 2020 (r368724) +++ head/sys/dev/spibus/ofw_spibus.c Thu Dec 17 17:11:14 2020 (r368725) @@ -152,6 +152,10 @@ ofw_spibus_attach(device_t dev) continue; } childdev = device_add_child(dev, NULL, -1); + + resource_list_init(&dinfo->opd_dinfo.rl); + ofw_bus_intr_to_rl(childdev, child, + &dinfo->opd_dinfo.rl, NULL); device_set_ivars(childdev, dinfo); } @@ -198,6 +202,15 @@ ofw_spibus_get_devinfo(device_t bus, device_t dev) return (&dinfo->opd_obdinfo); } +static struct resource_list * +ofw_spibus_get_resource_list(device_t bus __unused, device_t child) +{ + struct spibus_ivar *devi; + + devi = SPIBUS_IVAR(child); + return (&devi->rl); +} + static device_method_t ofw_spibus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, ofw_spibus_probe), @@ -206,6 +219,7 @@ static device_method_t ofw_spibus_methods[] = { /* Bus interface */ DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), DEVMETHOD(bus_add_child, ofw_spibus_add_child), + DEVMETHOD(bus_get_resource_list, ofw_spibus_get_resource_list), /* ofw_bus interface */ DEVMETHOD(ofw_bus_get_devinfo, ofw_spibus_get_devinfo), Modified: head/sys/dev/spibus/spibus.c ============================================================================== --- head/sys/dev/spibus/spibus.c Thu Dec 17 17:09:43 2020 (r368724) +++ head/sys/dev/spibus/spibus.c Thu Dec 17 17:11:14 2020 (r368725) @@ -101,6 +101,8 @@ spibus_print_child(device_t dev, device_t child) retval += bus_print_child_header(dev, child); retval += printf(" at cs %d", devi->cs); retval += printf(" mode %d", devi->mode); + retval += resource_list_print_type(&devi->rl, "irq", + SYS_RES_IRQ, "%jd"); retval += bus_print_child_footer(dev, child); return (retval); @@ -202,6 +204,7 @@ spibus_add_child(device_t dev, u_int order, const char device_delete_child(dev, child); return (0); } + resource_list_init(&devi->rl); device_set_ivars(child, devi); return (child); } @@ -210,6 +213,7 @@ static void spibus_hinted_child(device_t bus, const char *dname, int dunit) { device_t child; + int irq; struct spibus_ivar *devi; child = BUS_ADD_CHILD(bus, 0, dname, dunit); @@ -218,8 +222,22 @@ spibus_hinted_child(device_t bus, const char *dname, i resource_int_value(dname, dunit, "clock", &devi->clock); resource_int_value(dname, dunit, "cs", &devi->cs); resource_int_value(dname, dunit, "mode", &devi->mode); + if (resource_int_value(dname, dunit, "irq", &irq) == 0) { + if (bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1) != 0) + device_printf(bus, + "Warning: bus_set_resource() failed\n"); + } } +static struct resource_list * +spibus_get_resource_list(device_t bus __unused, device_t child) +{ + struct spibus_ivar *devi; + + devi = SPIBUS_IVAR(child); + return (&devi->rl); +} + static int spibus_transfer_impl(device_t dev, device_t child, struct spi_command *cmd) { @@ -236,6 +254,17 @@ static device_method_t spibus_methods[] = { DEVMETHOD(device_resume, spibus_resume), /* Bus interface */ + DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), + DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), + 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_alloc_resource, bus_generic_rl_alloc_resource), + DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), + DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource), + DEVMETHOD(bus_get_resource_list, spibus_get_resource_list), + DEVMETHOD(bus_add_child, spibus_add_child), DEVMETHOD(bus_print_child, spibus_print_child), DEVMETHOD(bus_probe_nomatch, spibus_probe_nomatch), Modified: head/sys/dev/spibus/spibusvar.h ============================================================================== --- head/sys/dev/spibus/spibusvar.h Thu Dec 17 17:09:43 2020 (r368724) +++ head/sys/dev/spibus/spibusvar.h Thu Dec 17 17:11:14 2020 (r368725) @@ -43,6 +43,7 @@ struct spibus_ivar uint32_t cs; uint32_t mode; uint32_t clock; + struct resource_list rl; }; #define SPIBUS_CS_HIGH (1U << 31) _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
