sunxi_de2_ccu.c revision 1.7
1 /* $NetBSD: sunxi_de2_ccu.c,v 1.7 2021/01/27 03:10:20 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2019 Jared McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 31 __KERNEL_RCSID(1, "$NetBSD: sunxi_de2_ccu.c,v 1.7 2021/01/27 03:10:20 thorpej Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/bus.h> 35 #include <sys/device.h> 36 #include <sys/systm.h> 37 38 #include <dev/fdt/fdtvar.h> 39 40 #include <arm/sunxi/sunxi_ccu.h> 41 #include <arm/sunxi/sunxi_de2_ccu.h> 42 43 static int sunxi_de2_ccu_match(device_t, cfdata_t, void *); 44 static void sunxi_de2_ccu_attach(device_t, device_t, void *); 45 46 CFATTACH_DECL_NEW(sunxi_de2ccu, sizeof(struct sunxi_ccu_softc), 47 sunxi_de2_ccu_match, sunxi_de2_ccu_attach, NULL, NULL); 48 49 static struct sunxi_ccu_reset sun8i_h3_de2_ccu_resets[] = { 50 SUNXI_CCU_RESET(DE2_RST_MIXER0, 0x08, 0), 51 SUNXI_CCU_RESET(DE2_RST_WB, 0x08, 2), 52 }; 53 54 static struct sunxi_ccu_reset sun50i_a64_de2_ccu_resets[] = { 55 SUNXI_CCU_RESET(DE2_RST_MIXER0, 0x08, 0), 56 SUNXI_CCU_RESET(DE2_RST_MIXER1, 0x08, 1), 57 SUNXI_CCU_RESET(DE2_RST_WB, 0x08, 2), 58 }; 59 60 static const char *mod_parents[] = { "mod" }; 61 62 static struct sunxi_ccu_clk sun8i_h3_de2_ccu_clks[] = { 63 SUNXI_CCU_GATE(DE2_CLK_BUS_MIXER0, "bus-mixer0", "bus", 0x04, 0), 64 SUNXI_CCU_GATE(DE2_CLK_BUS_MIXER1, "bus-mixer1", "bus", 0x04, 1), 65 SUNXI_CCU_GATE(DE2_CLK_BUS_WB, "bus-wb", "bus", 0x04, 2), 66 67 SUNXI_CCU_DIV(DE2_CLK_MIXER0_DIV, "mixer0-div", mod_parents, 68 0x0c, __BITS(3,0), 0, SUNXI_CCU_DIV_SET_RATE_PARENT), 69 SUNXI_CCU_DIV(DE2_CLK_MIXER1_DIV, "mixer1-div", mod_parents, 70 0x0c, __BITS(7,4), 0, SUNXI_CCU_DIV_SET_RATE_PARENT), 71 SUNXI_CCU_DIV(DE2_CLK_WB_DIV, "wb-div", mod_parents, 72 0x0c, __BITS(11,8), 0, SUNXI_CCU_DIV_SET_RATE_PARENT), 73 74 SUNXI_CCU_GATE(DE2_CLK_MIXER0, "mixer0", "mixer0-div", 0x00, 0), 75 SUNXI_CCU_GATE(DE2_CLK_MIXER1, "mixer1", "mixer1-div", 0x00, 1), 76 SUNXI_CCU_GATE(DE2_CLK_WB, "wb", "wb-div", 0x00, 2), 77 }; 78 79 struct sunxi_de2_ccu_config { 80 struct sunxi_ccu_reset *resets; 81 u_int nresets; 82 struct sunxi_ccu_clk *clks; 83 u_int nclks; 84 }; 85 86 static const struct sunxi_de2_ccu_config sun8i_h3_de2_config = { 87 .resets = sun8i_h3_de2_ccu_resets, 88 .nresets = __arraycount(sun8i_h3_de2_ccu_resets), 89 .clks = sun8i_h3_de2_ccu_clks, 90 .nclks = __arraycount(sun8i_h3_de2_ccu_clks), 91 }; 92 93 static const struct sunxi_de2_ccu_config sun50i_a64_de2_config = { 94 .resets = sun50i_a64_de2_ccu_resets, 95 .nresets = __arraycount(sun50i_a64_de2_ccu_resets), 96 .clks = sun8i_h3_de2_ccu_clks, 97 .nclks = __arraycount(sun8i_h3_de2_ccu_clks), 98 }; 99 100 static const struct device_compatible_entry compat_data[] = { 101 { .compat = "allwinner,sun8i-h3-de2-clk", 102 .data = &sun8i_h3_de2_config }, 103 { .compat = "allwinner,sun50i-a64-de2-clk", 104 .data = &sun50i_a64_de2_config }, 105 { .compat = "allwinner,sun50i-h5-de2-clk", 106 .data = &sun50i_a64_de2_config }, 107 108 DEVICE_COMPAT_EOL 109 }; 110 111 static int 112 sunxi_de2_ccu_match(device_t parent, cfdata_t cf, void *aux) 113 { 114 struct fdt_attach_args * const faa = aux; 115 116 return of_compatible_match(faa->faa_phandle, compat_data); 117 } 118 119 static void 120 sunxi_de2_ccu_attach(device_t parent, device_t self, void *aux) 121 { 122 struct sunxi_ccu_softc * const sc = device_private(self); 123 struct fdt_attach_args * const faa = aux; 124 const int phandle = faa->faa_phandle; 125 const struct sunxi_de2_ccu_config *conf; 126 struct clk *clk_bus, *clk_mod; 127 struct fdtbus_reset *rst; 128 129 sc->sc_dev = self; 130 sc->sc_phandle = phandle; 131 sc->sc_bst = faa->faa_bst; 132 133 conf = of_compatible_lookup(phandle, compat_data)->data; 134 135 sc->sc_resets = conf->resets; 136 sc->sc_nresets = conf->nresets; 137 sc->sc_clks = conf->clks; 138 sc->sc_nclks = conf->nclks; 139 140 clk_bus = fdtbus_clock_get(phandle, "bus"); 141 if (clk_bus == NULL || clk_enable(clk_bus) != 0) { 142 aprint_error(": couldn't enable bus clock\n"); 143 return; 144 } 145 clk_mod = fdtbus_clock_get(phandle, "mod"); 146 if (clk_mod == NULL || clk_enable(clk_mod) != 0) { 147 aprint_error(": couldn't enable mod clock\n"); 148 return; 149 } 150 rst = fdtbus_reset_get_index(phandle, 0); 151 if (rst == NULL || fdtbus_reset_deassert(rst) != 0) { 152 aprint_error(": couldn't de-assert reset\n"); 153 return; 154 } 155 156 if (sunxi_ccu_attach(sc) != 0) 157 return; 158 159 aprint_naive("\n"); 160 aprint_normal(": DE2 CCU\n"); 161 162 sunxi_ccu_print(sc); 163 } 164
Indexes created Fri Sep 26 08:10:20 GMT 2025