[src/trunk]: src/sys/dev/acpi Support Designware APB UART

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7d5b84c1d4f3
branches:  trunk
changeset: 837797:7d5b84c1d4f3
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Fri Dec 21 14:51:47 2018 +0000

description:
Support Designware APB UART

diffstat:

 sys/dev/acpi/com_acpi.c |  42 +++++++++++++++++++++++++++++++-----------
 1 files changed, 31 insertions(+), 11 deletions(-)

diffs (92 lines):

diff -r 4e5f02402773 -r 7d5b84c1d4f3 sys/dev/acpi/com_acpi.c
--- a/sys/dev/acpi/com_acpi.c   Fri Dec 21 14:51:12 2018 +0000
+++ b/sys/dev/acpi/com_acpi.c   Fri Dec 21 14:51:47 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: com_acpi.c,v 1.36 2018/12/08 17:46:13 thorpej Exp $ */
+/* $NetBSD: com_acpi.c,v 1.37 2018/12/21 14:51:47 jmcneill Exp $ */
 
 /*
  * Copyright (c) 2002 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -26,7 +26,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: com_acpi.c,v 1.36 2018/12/08 17:46:13 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: com_acpi.c,v 1.37 2018/12/21 14:51:47 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/device.h>
@@ -34,11 +34,10 @@
 #include <sys/termios.h>
 
 #include <dev/acpi/acpivar.h>
+#include <dev/acpi/acpi_intr.h>
 
 #include <dev/ic/comvar.h>
 
-#include <dev/isa/isadmavar.h>
-
 static int     com_acpi_match(device_t, cfdata_t , void *);
 static void    com_acpi_attach(device_t, device_t, void *);
 
@@ -63,6 +62,17 @@
        "SMCF010",      /* SMC SuperIO IRDA device */
        "NSC6001",      /* NSC IRDA device */
        "FUJ02E6",      /* Fujitsu Serial Pen Tablet */
+       "HISI0031",     /* Hisilicon UART */
+       "8250dw",       /* Designware APB UART */
+       NULL
+};
+
+/*
+ * Subset of supported device IDs of type COM_TYPE_DW_APB
+ */
+static const char * const com_acpi_dw_ids[] = {
+       "HISI0031",     /* Hisilicon UART */
+       "8250dw",       /* Designware APB UART */
        NULL
 };
 
@@ -98,6 +108,7 @@
        bus_addr_t base;
        bus_size_t size;
        ACPI_STATUS rv;
+       ACPI_INTEGER clock_freq;
 
        sc->sc_dev = self;
 
@@ -142,18 +153,27 @@
 
        aprint_normal("%s", device_xname(self));
 
-       if (com_probe_subr(&sc->sc_regs) == 0) {
-               aprint_error(": com probe failed\n");
-               goto out;
+       if (acpi_match_hid(aa->aa_node->ad_devinfo, com_acpi_dw_ids) != 0) {
+               sc->sc_type = COM_TYPE_DW_APB;
+               SET(sc->sc_hwflags, COM_HW_POLL);       /* XXX */
+       } else {
+               if (com_probe_subr(&sc->sc_regs) == 0) {
+                       aprint_error(": com probe failed\n");
+                       goto out;
+               }
        }
 
-       sc->sc_frequency = 115200 * 16;
+       rv = acpi_dsd_integer(aa->aa_node->ad_handle, "clock-frequency", &clock_freq);
+       if (ACPI_SUCCESS(rv))
+               sc->sc_frequency = clock_freq;
+       else
+               sc->sc_frequency = 115200 * 16;
 
        com_attach_subr(sc);
 
-       asc->sc_ih = isa_intr_establish_xname(aa->aa_ic, irq->ar_irq,
-           (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL,
-           IPL_SERIAL, comintr, sc, device_xname(sc->sc_dev));
+       if (!ISSET(sc->sc_hwflags, COM_HW_POLL))
+               asc->sc_ih = acpi_intr_establish(self, (uint64_t)aa->aa_node->ad_handle,
+                   IPL_SERIAL, true, comintr, sc, device_xname(self));
 
        if (!pmf_device_register(self, NULL, com_resume))
                aprint_error_dev(self, "couldn't establish a power handler\n");