sunxi_ccu_gate.c revision 1.2.4.2
1 1.2.4.2 snj /* $NetBSD: sunxi_ccu_gate.c,v 1.2.4.2 2017/07/18 19:13:08 snj Exp $ */ 2 1.2.4.2 snj 3 1.2.4.2 snj /*- 4 1.2.4.2 snj * Copyright (c) 2017 Jared McNeill <jmcneill (at) invisible.ca> 5 1.2.4.2 snj * All rights reserved. 6 1.2.4.2 snj * 7 1.2.4.2 snj * Redistribution and use in source and binary forms, with or without 8 1.2.4.2 snj * modification, are permitted provided that the following conditions 9 1.2.4.2 snj * are met: 10 1.2.4.2 snj * 1. Redistributions of source code must retain the above copyright 11 1.2.4.2 snj * notice, this list of conditions and the following disclaimer. 12 1.2.4.2 snj * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.4.2 snj * notice, this list of conditions and the following disclaimer in the 14 1.2.4.2 snj * documentation and/or other materials provided with the distribution. 15 1.2.4.2 snj * 16 1.2.4.2 snj * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.2.4.2 snj * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.2.4.2 snj * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.2.4.2 snj * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.2.4.2 snj * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 1.2.4.2 snj * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 1.2.4.2 snj * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 1.2.4.2 snj * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 1.2.4.2 snj * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.2.4.2 snj * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.2.4.2 snj * SUCH DAMAGE. 27 1.2.4.2 snj */ 28 1.2.4.2 snj 29 1.2.4.2 snj #include <sys/cdefs.h> 30 1.2.4.2 snj __KERNEL_RCSID(0, "$NetBSD: sunxi_ccu_gate.c,v 1.2.4.2 2017/07/18 19:13:08 snj Exp $"); 31 1.2.4.2 snj 32 1.2.4.2 snj #include <sys/param.h> 33 1.2.4.2 snj #include <sys/bus.h> 34 1.2.4.2 snj 35 1.2.4.2 snj #include <dev/clk/clk_backend.h> 36 1.2.4.2 snj 37 1.2.4.2 snj #include <arm/sunxi/sunxi_ccu.h> 38 1.2.4.2 snj 39 1.2.4.2 snj int 40 1.2.4.2 snj sunxi_ccu_gate_enable(struct sunxi_ccu_softc *sc, struct sunxi_ccu_clk *clk, 41 1.2.4.2 snj int enable) 42 1.2.4.2 snj { 43 1.2.4.2 snj struct sunxi_ccu_gate *gate = &clk->u.gate; 44 1.2.4.2 snj uint32_t val; 45 1.2.4.2 snj 46 1.2.4.2 snj KASSERT(clk->type == SUNXI_CCU_GATE); 47 1.2.4.2 snj 48 1.2.4.2 snj val = CCU_READ(sc, gate->reg); 49 1.2.4.2 snj if (enable) 50 1.2.4.2 snj val |= gate->mask; 51 1.2.4.2 snj else 52 1.2.4.2 snj val &= ~gate->mask; 53 1.2.4.2 snj CCU_WRITE(sc, gate->reg, val); 54 1.2.4.2 snj 55 1.2.4.2 snj return 0; 56 1.2.4.2 snj } 57 1.2.4.2 snj 58 1.2.4.2 snj const char * 59 1.2.4.2 snj sunxi_ccu_gate_get_parent(struct sunxi_ccu_softc *sc, struct sunxi_ccu_clk *clk) 60 1.2.4.2 snj { 61 1.2.4.2 snj struct sunxi_ccu_gate *gate = &clk->u.gate; 62 1.2.4.2 snj 63 1.2.4.2 snj KASSERT(clk->type == SUNXI_CCU_GATE); 64 1.2.4.2 snj 65 1.2.4.2 snj return gate->parent; 66 1.2.4.2 snj } 67
Indexes created Wed Oct 22 13:09:56 GMT 2025