[src/trunk]: src/sys/dev/fdt Use com_init_regs_stride instead of a4x tag

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

details:   https://anonhg.NetBSD.org/src/rev/de0746bf5084
branches:  trunk
changeset: 944420:de0746bf5084
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Mon Sep 28 11:32:19 2020 +0000

description:
Use com_init_regs_stride instead of a4x tag

diffstat:

 sys/dev/fdt/dw_apb_uart.c |  35 ++++++++++++++++++-----------------
 1 files changed, 18 insertions(+), 17 deletions(-)

diffs (87 lines):

diff -r 07919ce56f7e -r de0746bf5084 sys/dev/fdt/dw_apb_uart.c
--- a/sys/dev/fdt/dw_apb_uart.c Mon Sep 28 06:04:08 2020 +0000
+++ b/sys/dev/fdt/dw_apb_uart.c Mon Sep 28 11:32:19 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dw_apb_uart.c,v 1.5 2019/07/21 15:57:23 rin Exp $ */
+/* $NetBSD: dw_apb_uart.c,v 1.6 2020/09/28 11:32:19 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2017 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -28,7 +28,7 @@
 
 #include <sys/cdefs.h>
 
-__KERNEL_RCSID(1, "$NetBSD: dw_apb_uart.c,v 1.5 2019/07/21 15:57:23 rin Exp $");
+__KERNEL_RCSID(1, "$NetBSD: dw_apb_uart.c,v 1.6 2020/09/28 11:32:19 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -76,8 +76,8 @@
        struct dw_apb_uart_softc * const ssc = device_private(self);
        struct com_softc * const sc = &ssc->ssc_sc;
        struct fdt_attach_args * const faa = aux;
+       bus_space_tag_t bst = faa->faa_bst;
        bus_space_handle_t bsh;
-       bus_space_tag_t bst;
        char intrstr[128];
        bus_addr_t addr;
        bus_size_t size;
@@ -91,17 +91,7 @@
 
        if (of_getprop_uint32(faa->faa_phandle, "reg-shift", &reg_shift)) {
                /* missing or bad reg-shift property, assume 2 */
-               bst = faa->faa_a4x_bst;
-       } else {
-               if (reg_shift == 2) {
-                       bst = faa->faa_a4x_bst;
-               } else if (reg_shift == 0) {
-                       bst = faa->faa_bst;
-               } else {
-                       aprint_error(": unsupported reg-shift value %d\n",
-                           reg_shift);
-                       return;
-               }
+               reg_shift = 2;
        }
 
        sc->sc_dev = self;
@@ -137,7 +127,7 @@
                return;
        }
 
-       com_init_regs(&sc->sc_regs, bst, bsh, addr);
+       com_init_regs_stride(&sc->sc_regs, bst, bsh, addr, reg_shift);
 
        com_attach_subr(sc);
 
@@ -169,9 +159,12 @@
 dw_apb_uart_console_consinit(struct fdt_attach_args *faa, u_int uart_freq)
 {
        const int phandle = faa->faa_phandle;
-       bus_space_tag_t bst = faa->faa_a4x_bst;
+       bus_space_tag_t bst = faa->faa_bst;
+       bus_space_handle_t dummy_bsh;
+       struct com_regs regs;
        bus_addr_t addr;
        tcflag_t flags;
+       u_int reg_shift;
        int speed;
 
        fdtbus_get_reg(phandle, 0, &addr, NULL);
@@ -180,7 +173,15 @@
                speed = 115200; /* default */
        flags = fdtbus_get_stdout_flags();
 
-       if (comcnattach(bst, addr, speed, uart_freq, COM_TYPE_DW_APB, flags))
+       if (of_getprop_uint32(phandle, "reg-shift", &reg_shift)) {
+               /* missing or bad reg-shift property, assume 0 */
+               reg_shift = 0;
+       }
+
+       memset(&dummy_bsh, 0, sizeof(dummy_bsh));
+       com_init_regs_stride(&regs, bst, dummy_bsh, addr, reg_shift);
+
+       if (comcnattach1(&regs, speed, uart_freq, COM_TYPE_DW_APB, flags))
                panic("Cannot initialize dw-apb-uart console");
 
        cn_set_magic("+++++");